Mechanical component, process for manufacturing a mechanical component, and movement timepiece.

专利摘要:
The purpose is to propose a mechanical component, a method of manufacturing a mechanical component by electroforming, a movement and a timepiece which are cleared of breakage caused by the driving of the shaft and which allow the mechanical component to be securely attached to the shaft. There is provided a mechanical component (10) configured to rotate about a shaft (30). The mechanical component (10) comprises: a component main body (11) having a through hole (14) through which the shaft (30) passes; and one or more shaft support portions (18) formed on the inner surface (14A) of the through hole (14) and for securing the shaft (30) to the component main body (11). The at least one shaft support portion (18) protrudes into the through-hole (14) from the inner surface (14A) of the through-hole (14) and is able to retain the shaft (30). thanks to an elastic force. The percentage of elongation of the at least one shaft support portion (18) is greater than the percentage of elongation of the component main body (11).
公开号:CH710112A2
申请号:CH01329/15
申请日:2015-09-14
公开日:2016-03-15
发明作者:Sachiko Tanabe；Takashi Niwa；Masahiro Nakajima
申请人:Seiko Instr Inc；
IPC主号:

专利说明:

BACKGROUND OF THE INVENTION
1. Field of the invention
The present invention relates to a mechanical component, a method of manufacturing a mechanical component, a movement and a timepiece.
2. Description of the prior art
[0002] A precision instrument such as a mechanical timepiece uses a mechanical component such as a toothed wheel, which rotates around a shaft.
[0003] FIG. 23 shows an example of a structure connecting a mechanical component and a shaft (see, for example, EP-A-1,708,045 (Patent Document 1)).
[0004] FIG. 23 shows a mechanical component 90 which, in the center of a component main body 91 made of a brittle material, has a central hole 94 in which a shaft 30 is driven and which is triangular in plan view; and, in close proximity to each face of the central hole 94, there is a slot-like opening 92.
Bridges 93 between the central hole 94 and the opening 92 retain the shaft 30 because of their elasticity. A mechanical component of this type is thin, so that it undergoes stresses generated when the shaft is driven away; in the mechanical component 90, however, it is possible to reduce the stress due to the elasticity of the bridges 93.
In the mechanical component 90, the bridges 93 are liable to break due to the driving of the shaft 30.
A reduction in the amount of elastic deformation of the bridges 93 could cause the bridges 93 would be less prone to breakage; in this case, however, it is to be feared that the attachment of the mechanical component 90 to the shaft 30 is rather insufficient.
SUMMARY OF THE INVENTION
An aspect of the present application is to provide a mechanical component, a method of manufacturing a mechanical component, a movement and a timepiece which are cleared of the breaks caused by the hunting of the tree and which allow the mechanical component is securely fastened to the shaft.
According to the present invention there is provided a mechanical component configured to rotate about a shaft, comprising: a component main body having a through hole through which the shaft passes; and one or more shaft support portions formed on the inner surface of the through hole and for securing the shaft to the component main body; the one or more shaft support portions protrude into the through hole from the inner surface of the through hole and are able to retain the shaft by an elastic force; and the percentage of elongation of the at least one shaft support portion is greater than the percentage of elongation of the component main body.
In this construction, the percent elongation (percent elongation) of the one or more shaft support portions is greater than the percent elongation (percent elongation) of the main component body, and the the shaft support portions retain the shaft due to an elastic force, such that a displacement of the shaft is made possible to some extent, whereby a higher damping effect is obtained. Thus, even when a brittle material is used for the main component body, it is possible to prevent the mechanical component from breaking due to stresses when the shaft is driven out.
In addition, as indicated above, the one or more shaft support portions have a high movement clearance capability, so that sufficient spinning torque and pulling force are obtained, which makes it possible to safely hold the tree. Thus, the torque of the shaft can be securely transmitted to the main component body, thereby improving the accuracy of time measurement of the timepiece using the mechanical component.
It is preferable that the shaft support portion or portions are made of a material capable of plastic deformation and capable of retaining the shaft by an elastic bending force.
In this construction, it is possible to allow a displacement of the shaft beyond the elastic deformation range, so that it is possible to increase the damping effect. Thus, even when a brittle material is used for the main component body, it is possible to prevent the mechanical component from breaking due to stresses when the shaft is driven out.
When the shaft support portion has a bending elasticity and is capable of plastic deformation, it is itself less likely to break.
One and the other end of the shaft support portion are each attached to the main component body, and the intermediate portion thereof has an arcuate shape at a distance from the inner surface of the hole. crossing; it is preferable that the intermediate portion is able to retain the shaft by an elastic bending force.
In this construction, both ends of the shaft support portion are attached to the main component body, so that it is possible to improve the durability of the shaft support portion.
It is preferred that the main component body has a retaining recess as the anchor structure securing the shaft support portion retaining a portion of the shaft support portion.
In this configuration, it is possible to prevent detachment of the shaft support portion and improve the durability thereof.
It is preferable that the inner surface of the through hole has a displacement limiting projection which, when the shaft is moved away from its predetermined normal position, stops the shaft to limit its outward movement.
In this construction, it is possible to adjust an offset of the shaft, in such a way that it is possible to prevent deterioration of the mechanical component and improve the accuracy of time measurement of a workpiece. watchmaking using this mechanical component.
It is preferable that the shaft support portion has a pair of stationary portions, one and the other end of which are respectively fixed to the main body of the component, a proximal portion extending from the immobile portion to the central hole, and an inner peripheral extension portion connecting the extension ends of the proximal portions to each other, the inner peripheral extension portion extending in a peripheral direction of the main body of the component and being able to hold the shaft by an elastic bending force.
In this construction, the inner peripheral extension portion extends in a peripheral direction of the main component body, so that it is applied to the shaft over a wide peripheral range. Thus, the force on the shaft support portion is distributed to prevent breakage of the shaft support portion, and a reliable support of the shaft by the inner peripheral extension portion is possible. .
It is preferred that the inner peripheral extension portion has an inwardly projecting boss protruding on the shaft to retain it, the retaining boss projecting inwardly therefrom. an end portion of the inner peripheral extension portion.
In this construction, it is possible to reduce the stress concentration at the end portion of the inner peripheral extension portion, which makes it possible to prevent the shaft support portion from breaking.
The shaft support portion may have an opening formed to extend in the peripheral direction of the main component body.
In this construction, it is possible to apply an elastic bending force to the portion radially inwardly of the opening, and it is possible to securely retain the shaft through the elastic force of bending .
The shaft support portion may have a fixing (adjustment) displacement structure fixing (adjusting, preventing) displacement in the direction of the thickness relative to the main component body.
In this construction, it is possible to fix (adjust) the positional deviation of the shaft, so that it is possible to prevent a breakage of the mechanical component, which makes it possible to improve the accuracy of the time measurement of the timepiece using the mechanical component.
It is preferable that the main component body is made of a brittle material and that the shaft support portion is made of metal.
The shaft support portion may form a driving portion in which the shaft is driven so as to be so fixed to the shaft.
The movement of the present application comprises the mechanical component.
In this construction, it is possible to propose a movement having a high accuracy of time measurement.
The timepiece of the present application is equipped with the mechanical component.
In this construction, it is possible to propose a timepiece having a high accuracy of time measurement.
According to the present application, there is provided a method of manufacturing a rotating mechanical component around a shaft, the mechanical component comprising: a main component body having a through hole through which the shaft passes; and one or more shaft support portions formed on the inner surface of the through hole and for securing the shaft to the component main body, the one or more shaft support portions projecting through the through hole from the inner surface of the through hole and being able to retain the shaft by an elastic force, and the percentage of elongation of the shaft support portion or portions being greater than the elongation percentage of the main body of the component, the method comprising the steps of: forming a mask having an interior configuration corresponding to the configuration of the one or more shaft support portions and an outer configuration corresponding to the outer configuration of the component main body, on at least one a surface of a starting element forming the main component body, and forming a structure for retaining the suppor portion (s) t, in the starting element, according to the internal configuration of the mask; forming the shaft support portion or portions made of the material, by electroforming; and unnecessary portions of the starting member are removed according to the outer configuration of the mask.
According to the present application, a common mask is used to form the driving portion and to determine the outer configuration of the main component body, so that it is possible to increase the coaxiality of the main component body relative to to the tree. In addition, it is possible to increase the dimensional accuracy in the radial direction.
Thus, an axial offset relative to the shaft does not occur easily, and it is possible to prevent misalignment during operation of the mechanical component. As a result, it is possible to increase the time measurement accuracy of the timepiece employing this mechanical component.
In accordance with the present invention, there is provided a rotating mechanical component around a shaft, comprising a component main body having a through hole through which a shaft passes, and a driving portion formed on the inner surface of the shaft. through hole and configured to be attached to the shaft by means of the shaft driving; the driving portion has one or more shaft support portions made of a material capable of plastic deformation; and the one or more shaft support portions extend into the through hole from the inner surface of the through hole and are able to retain the shaft by means of an elastic bending force.
In this construction, a shaft support portion having elasticity in bending and capable of plastic deformation is used. Due to the existence of a plastically deformable range, the shaft support portion may allow movement of the shaft beyond the elastic deformation range, so that it is possible to improve the depreciation effect. Thus, even if a brittle material is used for the main component body, it is possible to prevent the mechanical component from breaking due to stresses when the shaft is driven out.
In addition, the shaft support portion has a bending elasticity and is capable of plastic deformation, so that it can not easily be broken.
In addition, as mentioned above, the shaft support portion has a high capacity for movement authorization, so that it is possible to obtain a rotational play torque and a force of sufficient extraction, which makes it possible to reliably hold the tree. Thus, the torque of the shaft can be safely transmitted to the main component body, which makes it possible to increase the accuracy of the time measurement of the timepiece using this mechanical component.
It is preferable that the one and the other end of the shaft support portion are respectively fixed to the main component body and that the intermediate portion thereof has an arcuate shape at a distance from the inner surface of the through hole, the intermediate portion being able to retain the shaft by an elastic bending force.
In this construction, both ends of the shaft support portion are attached to the main component body, so that it is possible to improve the durability of the shaft support portion.
It is preferred that the main component body has a retaining recess as an anchoring structure that retains a portion of the shaft support portion so as to thereby secure the shaft support portion in position. .
In this configuration, it is possible to prevent detachment of the shaft support portion and improve the durability thereof.
It is preferable that the inner surface of the through hole has a displacement limiting projection which, when the shaft is moved away from its predetermined normal position, forms a stop for the shaft to limit its outward movement.
In this construction, it is possible to adjust an offset of the shaft, so that it is possible to prevent a breakage of the mechanical component and improve the accuracy of time measurement of a part of watchmaking using this mechanical component.
The movement of the present application comprises the mechanical component.
In this construction, it is possible to propose a movement having a high accuracy of time measurement.
The timepiece of the present application is equipped with the mechanical component.
In this construction, it is possible to propose a timepiece having a high accuracy of time measurement.
According to the present application, there is provided a method of manufacturing a rotating mechanical component around a shaft, the mechanical component comprising: a main component body having a through hole through which the shaft passes; and a driving portion formed on the inner surface of the through hole and secured to the shaft by means of driving the shaft, the driving portion having one or more shaft support portions made of a material capable of plastic deformation wherein the at least one shaft support portion projects into the through hole from the inner surface of the through hole and is capable of retaining the shaft by an elastic bending force, the method comprising the steps of forming a mask having an interior configuration corresponding to the configuration of the driving portion and an outer configuration corresponding to the outer configuration of the main component body, on at least one surface of a starting member forming the main component body and forming a structure for retaining the one or more shaft support portions in the starting member according to the configuration inside of the mask; forming the driving portion made of the material, by electroforming; and unnecessary portions of the starting member are removed according to the outer configuration of the mask.
According to the present application, the driving portion is formed using a common mask and the outer configuration of the main component body is determined, so that it is possible to increase the coaxiality of the main component body relative to to the tree. In addition, it is possible to increase the dimensional accuracy in the radial direction.
Thus, an axial offset relative to the shaft does not occur easily, which makes it possible to prevent misalignment during operation of the mechanical component. Thus, it is possible to increase the time measurement accuracy of the timepiece employing this mechanical component.
In the mechanical component according to the present application, the percent elongation (percent elongation) of the shaft support portion is greater than the percent elongation (percent elongation) of the component main body, and the shaft support portion retains the shaft by an elastic force, such that shaft movement is made possible to some extent, providing a higher damping effect. Thus, even when a brittle material is used for the main component body, it is possible to prevent the mechanical component from breaking due to stresses when the shaft is driven out.
In addition, as indicated above, the shaft support portion has a high permitting capacity of displacement, in such a way that it is possible to obtain a rotational play torque and a force of sufficient extraction, which makes it possible to safely hold the tree. Thus, the torque of the shaft can be securely transmitted to the main component body, thereby improving the accuracy of time measurement of the timepiece using the mechanical component.
According to the method of manufacturing a mechanical component according to the present application, using a common mask, the driving portion is formed and the outer configuration of the main body of the component is determined, so that it is possible to increase the coaxiality of the main component body with respect to the shaft. In addition, it is possible to increase the dimensional accuracy in the radial direction.
Thus, an axial offset relative to the shaft does not occur easily, which makes it possible to prevent misalignment during operation of the mechanical component. Thus, it is possible to increase the time measurement accuracy of the timepiece employing this mechanical component.
BRIEF DESCRIPTION OF THE DRAWINGS
[0059]<tb> Fig. 1 <SEP> is a diagram showing a mechanical component according to a first embodiment of the present invention; with the portion A which is an overall plan view, and the portion B which is an enlargement of part of the portion A.<tb> Fig. 2 <SEP> is a sectional view along the line 1-l of FIG. 1, of the mechanical component of the embodiment of the present invention.<tb> Figs. 3A to 3F <SEP> are explanatory views illustrating a method of manufacturing the mechanical component according to an embodiment of the present invention.<tb> Figs. 4A to 4F <SEP> are explanatory views, following FIG. 3A to 3F, illustrating the method of manufacturing the mechanical component according to the embodiment of the present invention.<tb> Figs. 5A to 5D <SEP> are explanatory views, following FIG. 4A-4F, illustrating the method of manufacturing a mechanical component according to the embodiment of the present invention.<tb> Figs. 6A to 6D <SEP> are explanatory views, succeeding FIGS. 5A-5D, illustrating the method of manufacturing a mechanical component according to the embodiment of the present invention.<tb> Fig. 7 <SEP> is a diagram schematically showing an electroforming apparatus.<tb> Fig. <SEP> is a plan view showing a specific example of a mechanical component according to a first embodiment of the present invention.<tb> Fig. <SEP> is a plan view showing a mechanical component according to a second embodiment of the present invention.<tb> Fig. <SEP> is a plan view showing a mechanical component according to a third embodiment of the present invention.<tb> Fig. <SEP> is a plan view showing a mechanical component according to a fourth embodiment of the present invention.<tb> Fig. <SEP> is a plan view showing a mechanical component according to a fifth embodiment of the present invention; with the portion A which is an overall plan view, and the portion B which is an enlargement of part of the portion A.<tb> Fig. <SEP> is a plan view showing a mechanical component according to a sixth embodiment of the present invention.<tb> Fig. 14 <SEP> is a diagrammatic view, in section, of a first variant of the mechanical component of FIG. 1.<tb> Fig. <SEP> is a plan view of the mechanical component of FIG. 14.<tb> Fig. <SEP> is a schematic plan view of a second variant of the mechanical component of FIG. 1.<tb> Fig. 17 <SEP> is a diagrammatic view, in section, of a third variant of the mechanical component of FIG. 1.<tb> Fig. 18 <SEP> is a schematic sectional view of a fourth variant of the mechanical component of FIG. 1.<tb> Fig. 19 <SEP> is a schematic sectional view of a fifth variant of the mechanical component of FIG. 1.<tb> Fig. <SEP> is a schematic sectional view of a sixth variant of the mechanical component of FIG. 1.<tb> Fig. <SEP> is a plan view of a complete assembly according to one embodiment of the present invention.<tb> Fig. SEP is a plan view of the front face of a movement according to an embodiment of the present invention.<tb> Fig. 23 <SEP> is a plan view of a conventional mechanical component.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
First embodiment, mechanical component
[0060] A mechanical component 10 according to the first embodiment of the present invention will be described.
FIG. 1A is a plan view of the mechanical component 10, and FIG. 1B is an enlarged plan view of a portion of the mechanical component 10. FIG. 2 is a sectional view along the line 1-l of FIG. 1A. Fig. 1 represents the mechanical component 10 before driving the shaft 30.
As shown in FIG. 1 and in fig. 2, the mechanical component 10 comprises a main body of component 11 generally similar to a disc, and a driving portion 12 provided inside the main component body 11.
A1 denotes a central axis of the main component body 11, and an axis of rotation of the mechanical component 10.
In the description below, the term "peripheral direction" designates the peripheral direction of a circle whose center coincides with the central axis A1 in the plane containing the first surface 11a of the main body of component 11. The term "radial direction" means the radial direction of the circle. The term "inward" refers to a direction towards the central axis A1, and the term "outwardly" refers to a direction opposite to the central axis A1. According to the peripheral direction, the direction of rotation to the right in FIG. 1A is called C1 direction, and the direction of rotation to the left is called C2 direction.
As shown in FIG. 1, in the center of the main component body 11, is formed a central hole 14 (through hole) extending through the main component body 11 in the direction of the thickness.
At the inner edge 14a (inner surface) of the central hole 14, a plurality of retaining recesses 15 are formed at peripheral intervals.
The holding recesses 15 are formed with an arcuate shape in a plan view.
The shape in a plan view of the holding recesses 15 is not limited to the arcuate shape; it can also be rectangular, triangular, etc.
In the example shown in FIG. 1, six holding recesses 15 are formed. These retaining depressions 15 are sometimes referred to as the first to the sixth retaining holes 15A to 15F in this order when counted clockwise.
The number of retaining recesses is not limited to that of the example shown; there may also be one or more.
As shown in FIG. 1B, in the retaining recess 15, the width dimension L1 measured at the positions 15a (first positions) closest to the central hole 14 is smaller than the width dimension L2 measured at the positions 15b where the dimension in width is maximum (positions of the deep side of the holding recesses 15 relative to the positions 15a) (second positions).
These holding recesses 15 retain an end portion 19 of the shaft support portion 18 whereby it functions as an anchoring structure fixing (adjusting) the displacement in the direction in which the support portion of the tree 18 comes off. With this construction, it is possible to prevent detachment of the shaft support portion 18, and to increase the durability thereof.
As long as the width dimension at the first positions is smaller than the width dimension at the second positions at greater depth than the first positions, the first positions of the holding recess may not be positions. the closest to the side of the central hole, and the second positions may not be positions where the width dimension is maximum.
At the inner peripheral edge (inner surface) of the central hole 14 are formed a plurality of displacement limiting (adjustment) projections 17 which stop the shaft 30 to limit (adjust) its outward movement when the The shaft 30 is detached from a predetermined normal position (e.g., the central position of the central hole 14).
The displacement limiting projections 17 are formed with an arcuate shape in a plan view.
The shape of the displacement (adjustment) limiting projections 17 in a plan view is not limited to an arcuate shape; it can also be rectangular, triangular, etc.
In the example shown in FIG. 1, three displacement limiting projections 17 are formed at peripheral intervals. These displacement limiting protrusions 17 are sometimes referred to as the first to third displacement projections 17A-17C in this order when counted clockwise.
The peripheral position of the first displacement limiting projection 17A is between the holding recesses 15B and 15C; the peripheral position of the second displacement limiting projection 17B is between the holding recesses 15D and 15E; and the peripheral position of the third displacement-limiting projection 17C is between the holding recesses 15F and 15A.
It is preferable that the central portion 17a of each displacement limiting projection 17 is the closest to the central axis A1. Due to the presence of the displacement limiting protrusions 17, it is possible to limit the offset of the shaft 30 so that it is possible to prevent a breakage of the mechanical component 10 and to improve the accuracy of time measurement. of the timepiece using this mechanical component 10.
The number of displacement limiting projections is not limited to that of the example shown; there may also be one or more.
As constituent material of the main component body 11, a fragile material such as a ceramic material is preferable. Examples of ceramic materials that can be used include Si, SiC, Si3N4, zirconium, ruby and carbon.
The brittle material is a material having a small amount of critical deformation in elastic deformation caused by external stresses; when the elastic deformation exceeds a limit, it follows a fracture, no elastic limit exists; preferably, its elastic deformation range is 1% or less; even more preferably, it is 0.5% or less. The brittle material has low toughness.
It is preferable that the main component body 11 has high insulation properties. When the insulating capacity of the main component body 11 is not sufficient, it is preferable to form an oxide layer on the surface in contact with the shaft support portions 18.
The holding recesses 15 (15A to 15F) have the shaft support portions 18 forming a driving portion 12.
One and the other end portion 19 of each shaft support portion 18 are respectively fixed to the retaining recesses 15, and at least a portion of the intermediate portion 16 (the portion between the portions). end 19 and 19) is formed in an arcuate shape at a distance from the inner surface of the central hole 14.
In the example shown in FIG. 1, the driving portion 12 is formed by three shaft support portions 18. These shaft support portions 18 are sometimes referred to as the first to third shaft support portions 18A-18C in this sense when counted in the clockwise.
The end portions 19, 19 of the first shaft support portion 18A are respectively fixed to the holding recesses 15A and 15B; the end portions 19, 19 of the second shaft support portion 18B are respectively fixed to the holding recesses 15C and 15D; and the end portions 19, 19 of the third shaft support portion 18C are respectively attached to the holding recesses 15E and 15F.
The end portions 19 are fixed to the holding recesses 15 by being formed so as to fill the holding recesses 15.
The intermediate portion 16 may be formed, for example, with an arcuate shape in a plan view; it is remote from the inner surface (inner edge 14a) of the central hole 14 and extends in the space of the central hole 14 (inner-side space 26).
Regarding the intermediate portion 16, it is preferable that the central portion 16a in the longitudinal direction is closest to the central axis A1.
It is preferable that the intermediate portion 16 is formed in such a way that the closer one is to the end portions 19, the further the distance from the inner surface of the central hole 14 (inner edge 14a) to the intermediate portion 16 is small, and the closer we are to the central portion 16a, the greater the distance from the inner surface of the central hole 14 (inner edge 14a) to the intermediate portion 16 is large.
The thickness t of the intermediate portion 16 is smaller than the outer diameter of the end portions 19. It is preferable that the thickness t of the intermediate portion 16 is constant along the longitudinal direction of the intermediate portion 16 .
The shaft support portion 18 has a configuration (arcuate shape) whose two ends 19, 19 are fixed to the main component body 11, so that it is better in terms of durability.
As shown in FIG. 2, the first surface 18d of the shaft support portion 18 can be flush with the first surface 11a of the component main body 11 and the second surface 18e of the shaft support portion 18 can be flush with the second surface 11b of the main body of component 11.
The shaft support portion 18 is integrated with the main component body 11.
The outer diameter of the main component body 11 may be, for example, from several millimeters to several tens of millimeters. The thickness of the main component body 11 is, for example, approximately 100 to 1000 μm.
The radius rm1represented in FIGS. 1 and 2 is the distance from the central axis A1 to the central portion 16a of the intermediate portion 16; it is the minimum distance from the central axis A1 to the shaft support portion 18.
The radius rb1 is the distance from the central axis A1 to the central portion 17a of the displacement limiting projection 17; this is the minimum distance from the central axis A1 to the displacement limiting projection 17.
The radius rb1 is chosen to be larger than the radius rm1. In other words, rb1> rm1. Accordingly, it is possible to allow movement of the shaft 30 within a range determined by the displacement limiting projections 17.
The distance d is the maximum separation distance from the inner edge 14a of the central hole 14 to the intermediate portion 16; in the example of fig. 1 is the distance from the central portion 16a of the intermediate portion 16 to the inner edge 14a.
The distance d is a dimension constituting a margin of elastic deformation of the shaft support portion 18 when the shaft 30 is forced into the inner space 26 (described below).
It is preferable that the distance d be greater than the difference between the radius rm1 and the radius rb1. In other words, it is preferable that the formula d> (rm1-rb1) be checked.
This makes it possible to obtain a sufficient margin of elastic deformation, so that it is possible to increase the amount of displacement allowed for the shaft 30.
The driving portion 12 shown in FIG. 1 is formed by three shaft support portions 18 arranged in the peripheral direction; however, the number of shaft support portions 18 is not limited thereto. The number of tree support portions 18 may be 1 or there may be several; however, to maintain the shaft in a stable manner, it is preferable that the number be three or more.
The percent elongation (percent elongation) of the shaft support portion 18 is greater than the percent elongation (percent elongation) of the main component body 11.
It is preferable that the shaft support portion 18 is made of a material capable of plastic deformation, such as a metal. It is preferable that the metal is a metal capable of plastic flow and capable of being formed by electroforming.
Examples of such a metal include Au, Ni, Cu, and an alloy thereof. Examples of the alloy include a Ni alloy, a Cu alloy and an Au alloy. It is necessary to give elasticity (eg bending elasticity) to the shaft support portion 18, so that it is necessary for the metal used for it to be an electroforming material. little subject to stress relaxation, such as Ni-Fe, Ni-Mn, Ni-P and Ni-Pd.
Compared to a brittle material, a metal has greater flexural strength, greater tensile strength, greater ductility, greater critical deformation and less brittleness.
The material of the shaft support portion 18 may be a non-metallic material (for example a resin) as long as it satisfies the above conditions.
The shaft 30 can be driven into the space 26 on the inner side of the shaft support portion 18 (interior space 26).
When the shaft 30 is driven, the central portion 16a of the intermediate portion 16 of the shaft support portion 18 is applied to the shaft 30, and is pressed outwardly by the shaft 30. As a result, the intermediate portion 16 undergoes an elastic deformation such that the central portion 16a and its vicinity are displaced outward and the shaft 30 is retained by the elastic force of it (elastic bending force).
By means of the retention of the shaft 30 by the shaft support portions 18, the mechanical component 10 is fixed to the shaft 30.
The diameter of the shaft 30 may be, for example, approximately several tens of microns to 500 microns.
After being mounted on the shaft 30, the shaft support portions 18 may be connected to the shaft 30. As binding method, it is possible to use laser welding, welding, welding by diffusion, brazing, diffusion bonding, thermocompression welding, bonding by adhesive, bonding by wax, etc.
In the mechanical component 10, the elongation percentage of the shaft support portion 18 is greater than the elongation percentage of the main component body 11, and the shaft support portion 18 retains the the shaft 30 by an elastic force, so that the displacement of the shaft 30 is allowed to a certain extent, whereby a higher damping effect is obtained. Thus, even if a brittle material is used for the component main body 11, it is possible to prevent the mechanical component 10 from breaking down due to stress when the shaft 30 is driven out.
In addition, in the mechanical component 10, the shaft support portion 18 is capable of plastic deformation. Thus, a displacement of the shaft 30 beyond the elastic deformation range is made possible, so that the damping effect can be increased. Thus, even if a brittle material is used for the main component body 11, it is possible to prevent the mechanical component from breaking due to the stresses when the shaft is driven out.
The shaft support portion 18 has flexural resilience, and is capable of plastic deformation, so that it is less prone to breaking.
In addition, as mentioned above, the shaft support portion 18 has a high capacity for movement authorization, so that it is possible to obtain a rotational play torque and an extraction force. sufficient, which makes it possible to securely support the shaft 30. Thus, it is possible to safely transmit the torque of the shaft 30 to the main component body 11, which improves the measurement accuracy time of a timepiece using the mechanical component 10.
First embodiment, method of manufacturing the mechanical component
In the following, a method of manufacturing the mechanical component 10 of the first embodiment is described with reference to FIGS. 3 to 6.
In FIG. 3, the portions A, C and E are plan views, and the portions B, D and F are sections taken along the lines II-II, III-III and IV-IV, respectively, of the portions A , C and E. In fig. 4, the portions A, C and E are plan views, and the portions B, D and F are sections taken along lines V-V, VI-VI and VII-VII ', respectively, portions A , C and E. In fig. 5, portions A and C are plan views, and portions B and D are sections taken along lines VIII-VIII and IX-IX, respectively. In fig. 6, the portions A and C are plan views, and the portions B and D are sections taken along lines X-X and XI-XI, respectively.
The manufacturing method of the present embodiment comprises the steps in which: a mold 41 is prepared; a hunting portion 12 is produced in the mold 41 by electroforming; and remove unnecessary portions.
1) Mold preparation
As shown in FIGS. 3A and 3B, a starting element 31 of Si or the like is prepared.
Then, as shown in FIGS. 3C and 3D, at least one surface of the starting element 31 (the first surface 31a in this example) is formed with a first mask 32 consisting of an oxide, such as SiO 2.
The first mask 32 has a plurality of openings 32a. The configuration in a plan view of the opening 32a (the inner configuration of the first mask 32) is a configuration corresponding to the configuration of the driving portion 12 shown in FIG. 1A. In particular, it is the same configuration in a plan view as the driving portion 12.
The portion surrounded by the openings 32a is called the central portion 32b.
The outer configuration of the first mask 32 in a plan view is the same as the outer configuration of the main component body 11 in a plan view.
The first mask 32 can be made by performing pattern placement by photolithography on a coating film consisting of an oxide (eg SiO2) formed, for example, over the entire surface of the first surface 31a of the element. starting 31.
The placement of the coating film in a pattern (pattern placement) can be achieved, for example, by the following method.
The above coating film is formed over the entire surface of the first surface 31a of the starting member 31, and a resist layer (not shown) is formed on the surface of this coating film. The resist layer may be a negative-type photosensitive resin or a positive-type photosensitive resin.
A predetermined photographic mask is disposed on the surface of the resist layer to expose the resist layer. The configuration and dimensions of the screen pattern of the photographic mask in a plan view correspond to the configuration and dimensions, in a plan view, of the main component body 11 shown in FIG. 1A.
By means of the development of the resist layer, the useless portion is removed, and the resist layer has a configuration in accordance with the first mask 32.
By means of the removal, by dry etching or the like, of the portion of the coating film in which there is no reserve layer, the first mask 32 shown in FIGS. 3C and 3D is formed. After forming the first mask 32, the resist layer is removed.
Then, as shown in FIGS. 3E and 3F, a second annular mask 33 is formed in the region outside the outer edge of the first mask 32.
The region of the first surface 31a of the starting element 31 located outside the first mask 32 is covered by the second mask 33. The openings 32a are not covered with the second mask 33, although that at the openings 32a, the first surface 31a of the starting element 31 is uncovered.
As shown in FIGS. 3E and 3F, a portion of the second mask 33 may cover the region including the outer edge of the first mask 32.
The second mask 33 may be formed, for example, by a resist layer. The resist layer may be a negative-type photosensitive resin or a positive-type photosensitive resin.
The resist layer may be formed, for example, by means of pattern placement by photolithography. For example, the resist layer is exposed by means of a predetermined photosensitive mask and is developed, whereby it is possible to form the second annular mask 33 shown in FIGS. 3E and 3F.
Then, as shown in FIGS. 4A and 4B, the portion of the starting element 31 discovered at the openings 32a of the first mask 32 is removed by dry etching or the like. As a result, through holes 34 having a configuration and dimensions, in a plan view, in accordance with the apertures 32a are formed in the starting member 31.
The through holes 34 form the retaining recesses 15 in the following method.
In this method, the region outside the first mask 32 is covered with the second mask 33, so that this region is not removed.
By removing the second mask 33, a mold 41 is obtained in which the first mask 32 is formed on the surface of the starting element 31 having the through holes 34.
The etching used in the manufacturing method of the present embodiment may be a dry etching such as Reactive Ion Etching (RIE), or a wet etching using buffered hydrofluoric acid (BHF). , Hydro Fluorine Buffer). As reactive ion etching, it is best to choose Deep Reactive Ion Etching (DRIE).
2) Formation of the hunting portion
As shown in FIGS. 4C and 4D, the mold 41 is attached to the surface 60a of a substrate 60 by adhesion or the like. In this method, the mold 40 is in a position in which the first surface 31a of the starting element 31 is facing the substrate 60. The substrate 60 and the mold 41 attached thereto will be called the mold 41A with the substrate. A conductive film (not shown) made of metal or the like may be formed on the surface 60a of the substrate 60, or the substrate 60 itself may be made of conductive material.
[0144] In FIGS. 4C and 4D, the mold 41 is in a position in which the first surface 31a is facing downwards.
The shaft support portions 18 are made of a metal inside the openings 32a of the mold 41. It is preferable that the shaft support portions 18 are made by electroforming.
[0146] FIG. 7 is a schematic view of the constitution of an electroforming apparatus 50 provided for forming the shaft support portions 18.
The electroforming apparatus 50 comprises an electroforming vessel 51, an electrode 53, electrical connections 55 and a power source 57.
An electroforming liquid 59 is contained in the electroforming vessel 51. The electrode 53 is immersed in the electroforming liquid 59. The electrode 53 is made of the same metal as the tree support portions. 18.
The electrical connections 55 comprise a first connection 55a and a second connection 55b. The first connection 55a connects the electrode 53 and the anode side of the power source 57. The second connection 55b connects the mold 41A with the substrate and the cathode side of the energy source 57.
Because of this arrangement, the electrode 53 is connected to the anode side of the power source 57, and the mold 41A with the substrate is connected to the cathode side.
The electroforming liquid 59 is chosen according to the electroforming material. For example, when an electroforming element made of nickel is formed, a sulfamic acid bath, a Watts bath, a sulfuric acid bath or the like is selected. When nickel electroforming is carried out using a sulfamic acid bath, a sulfamic acid whose main constituent is hydrous nickel sulfamate is, for example, set as electroforming liquid 59, in the electroforming vessel 51 .
As shown in FIG. 7, the mold 41A with the substrate is mounted in the electroforming apparatus 50, and the power source 57 is turned on to apply a voltage between the electrode 53 and the mold 41A with the substrate.
As a result, the metal (for example nickel) constituting the electrode 53 is ionized and migrates through the electroforming liquid 59 to deposit in the region of the surfaces 60a of the substrate 60 facing the through holes 34 of the mold 41.
As shown in FIGS. 4C and 4D, the metal grows in the through holes 34 to thereby form the shaft support portions 18. When the through holes 34 have been filled with metal and the metal has grown up to the second surface 31b, the application of the voltage is stopped.
Then, as indicated by the mixed lines in FIG. 4D, the metal portions (bulging portions 61) protruding from the second surface 31b are removed by abrasion, polishing or the like. It is preferable that the surface of the metal is flush with the second surface 31b.
In particular, the mold 41 with the metal in the through holes 34 is removed from the electroforming vessel 51, and it is then possible to perform the abrasion / polishing on the second surface 31b of the mold 41, for flatten the second surface 31b and adjust the thickness of the mold 41.
As a result, the shaft support portions 18 are formed inside the through holes 41.
[0158] Then, the mold 41 is removed from the substrate 60.
3) Remove unnecessary portions
Then, as shown in FIGS. 4E and 4F, a third mask 35 having a central hole 63 is formed on the first surface 31a of the starting member 31. The configuration and the dimensions, in a plan view, of the central hole 63 correspond to the configuration and the dimensions, in a plan view, of the central hole 14 shown in FIG. 1A.
As material forming the third mask 35, it is preferable to choose a material that does not damage the metal support portions 18 formed of metal during the removal of the central portion 32b of the first mask 32 in the next step. . The third mask 35 may be formed of a resist layer or a metal layer.
In figs. 4E and 4F, the mold 41 is in a position in which the first surface 31a is facing upwards.
Then, as shown at 5A and 5B, the central portion 32b of the first mask 32 is removed. To remove the central portion 32b, it is possible, for example, to use a dry etching using a fluorocarbon type gas.
Then, as shown in FIGS. 5C and 5D, the third mask 35 is removed using an organic solvent, plasma incineration O2etc.
Then, as shown in FIGS. 6A and 6B, the portion of the starting element 31 where there is no first mask 32 formed, that is to say the regions located inside and outside the first mask 32 in a plan view is removed.
The portion of the starting element 31 in the region inside the first mask 32 is removed, whereby the central hole 14 shown in FIG. 1A is formed in the starting element 31.
The portion of the starting element 31 in the region outside the first mask 32 is removed, whereby the main component body 11 with the configuration shown in FIG. 1A is obtained.
Then, as shown in FIGS. 6C and 6D, the first mask 32 is removed. To remove the first mask 32, it is possible to use a dry etching using, for example, a fluorocarbon type gas.
Accordingly, the mechanical component 10 shown in FIGS. 1 and 2 is obtained.
In accordance with the method of manufacturing mechanical component according to the present embodiment, using the first common mask 32, the driving portion 12 is formed and the outer configuration of the main component body 11 is determined, so that that it is possible to increase the coaxiality of the main component body 11 with respect to the shaft 30. In addition, it is possible to increase the dimensional accuracy in the radial direction.
Thus, an axial offset relative to the shaft 30 can not occur easily, which prevents a misalignment when the mechanical component 10 is in operation. Therefore, it is possible to increase the time measurement accuracy of the timepiece using this mechanical component 10.
Specific example of the first embodiment, mechanical component
[0171] FIG. 8 is a plan view of a mechanical component 10A constituting a specific example of a mechanical component 10 according to the first embodiment.
The mechanical component 10A is a gear wheel; at the outer peripheral edge of the mechanical component 10A, a plurality of radially outwardly projecting teeth 27 are formed. The teeth 27 have a width which gradually decreases in the direction of projection (i.e., taper). Due to the formation of the teeth 27, the mechanical component 10A can be brought into engagement with an adjacent toothed wheel.
The toothed wheel formed by the mechanical component 10A is used as wheel and pinion wheel, or the like.
The mechanical component 10 is not limited to a toothed wheel such as the mechanical component 10A; it can also be an escapement mobile, an anchor, a balance etc.
Second embodiment, mechanical component
[0175] A mechanical component 70 according to a second embodiment of the present invention will be described. In the following, the constituent parts which are the same as in the above embodiment are designated with the same reference numerals, and their description will be omitted.
[0176] FIG. 9 is a plan view of the mechanical component 70.
As shown in FIG. 9, the mechanical component 70 comprises a substantially disk-like component main body 71, and a driving portion 72 provided within the component main body 71.
In the center of the main component body 71 is formed a central hole 74 (through hole) which is circular in a plan view; at an inner edge 74a of the central hole 74, a plurality (three in this example) of the holding recess 75 are formed at peripheral intervals.
Each retaining recess 75 has a proximal end portion 75a having a generally circular shape in a plan view, to which a proximal end portion 79a of a shaft support portion 78 is secured, and an extension portion 75b extending from the proximal end portion 75a to the inner edge 74a (inner surface) of the central hole 74.
The width dimension L3 of the extension portion 75b (first position) is smaller than the outside diameter of the proximal end portion 75a (second position) (width dimension L4). Thus, the retaining recess 75 functions as an anchor structure limiting the displacement in which the shaft support portion 78 detaches.
It is preferable that, like the main component body 11 of the first embodiment, the main component body 71 is made of a brittle material such as a ceramic material.
The driving portion 72 is formed by one or more shaft support portions 78. In FIG. 9, the driving portion 72 is formed by three shaft support portions 78.
Each shaft support portion 78 has a proximal end portion 79a having a generally circular shape in a plan view, and a distal end portion portion 76 extending from the proximal end portion 79a. . The proximal end portion 79a is attached to the proximal end portion 75a. A portion of the distal end portion 76 extends from the inner surface (inner edge 74a) of the central hole 74, into the space of the central hole 74 (interior space 26).
The thickness of the distal end portion portion 76 is smaller than the outside diameter of the proximal end portion 79a. It is preferred that the thickness of the distal end portion portion 76 be constant in the longitudinal direction.
The distal end portion 76 may be formed, for example, in an arcuate shape in a plan view; it is preferable that the distal end portion 79b is closest to the central axis A1. The distal end portion 76 may have an arcuate shape, whose arcuate path extending beyond the distal end portion 79b passes, for example, through the central axis A1.
[0186] It is preferable that the portion of the distal end portion 76 extending into the central hole 74 is formed such that the greater the distance from the distal end portion 76 to the inner surface (inner edge 74a) of the hole central is weak, the closer one is to the proximal end portion 79a; and so that the further the distance from the distal end portion 76 to the inner surface (inner edge 74a) of the central hole 74 is, the closer one is to the distal end portion 79b.
The percent elongation (percent elongation) of the shaft support portion 78 is greater than the percent elongation (percent elongation) of the main component body 71. It is preferable that the support portion of the shaft 78 is made of a material capable of plastic deformation, for example of metal. Like the shaft support portion 18 of the first embodiment of the invention, the shaft support portion 78 is made, for example, by electroforming.
The shaft 30 can be driven into the space 26 on the inside of the shaft support portion 78 (interior space 26).
When the shaft is driven out, the distal end portion 79b of the distal end portion 76 of each shaft support portion 78 is applied to the shaft 30, and is pushed outwardly. by the shaft 30. As a result, the distal end portion portion 76 undergoes elastic deformation such that the distal end portion 79b and its vicinity are displaced outwardly while retaining the shaft 30 by its elastic force (bending elastic force).
By means of the retaining of the shaft 30 by the shaft support portion 78, the mechanical component 70 is fixed to the shaft 30.
Unlike the mechanical component 10 of the first embodiment, an end portion (distal end portion 79b) of the shaft support portion 78 of the mechanical component 70 is not attached to the main body of the component 71; however, due to the sufficient bending elastic force of the shaft support portion 78, this mechanical component 70 is firmly attached to the shaft 30. Thus, a torque of the shaft 30 can be reliably transmitted to the shaft. main component 71, which improves the accuracy of time measurement of the timepiece.
In addition, as in the case of the mechanical component 10 of the first embodiment, it is possible to increase the damping effect and prevent the mechanical component 70 from breaking.
Third embodiment, mechanical component
[0193] A mechanical component 80 according to a third embodiment of the present invention will be described.
[0194] FIG. 10 is a plan view of the mechanical component 80.
As shown in FIG. 10, the mechanical component 80 comprises a component body 81 substantially like a disc, and a driving portion 82 provided on the inside of the main component body 81.
In the center of the main component body 81 is formed a central hole 84 (through-hole) having a generally triangular shape in a plan view, while, from the inner edge 84a of the central hole 84, the holding recesses 85 are formed at the vertex positions.
Each trough 85 has a triangular shape in a plan view, and the width dimension L5 at the innermost circumferential position 85a (the nearest position of the central hole 84; to the width dimension L6 at position 85b where the width dimension is maximum (second position).
This holding recess 85 retains the end portion 89 of the shaft support portion 88, whereby it functions as an anchoring structure limiting the displacement of the shaft support portion 88 in the direction a detachment. With this structure, it is possible to prevent the shaft support portion 88 from coming off.
It is preferable that, like the main component body 11 of the first embodiment, the main component body 81 is made of a brittle material such as a ceramic material.
[0200] The driving portion 82 is formed by the shaft support portion 88. The shaft support portion 88 has an annular shaft retaining portion 83 having a central hole 83a, and a plurality of extension portions. 87 extending radially outwardly from the shaft retention portion 83.
The shaft retention portion 83 has a structure in which frame portions 86 are associated; it is formed inside the central hole 84 and is arranged to be spaced from the inner edge 84a (inner surface) of the central hole 84. The shaft retention portion 83 shown in FIG. 10 is a generally triangular annular body formed by means of the combination of three generally rectilinear frame portions 86; the central hole 83a has a triangular shape in a plan view.
The inner edge of the frame portion 86 has a rectilinear shape, and its outer edge has a protruding shape. The projection height of the outer edge of the frame portion 86 is maximum at the central portion 86a in the longitudinal direction. Thus, the outer edge of the central portion 86a is closer to the inner edge 84a of the central hole 84 than the remainder of the frame portion 86.
The outer edge of the frame portion 86 is formed with a protruding shape, so that the central portion 86a is thicker than the other portions. The central portion 86a of the frame portion 86 is in contact with the shaft 30, so that it is subject to stress concentration; however, by making the central portion 86a thick, it is possible to distribute the stresses.
The end portion 89 of the extension portion 87 is shaped to fill the holding recess 85, and is formed in a generally triangular shape in a plan view.
In the shaft support portion 88, the end portion 89 of the extension portion 87 is attached to the holding recess 85; the other portion thereof extends into the central hole 84 away from the inner edge 84a (inner surface) of the central hole 84.
The elongation percentage of the shaft support portion 88 is greater than the elongation percentage of the component main body 81. It is preferable that the shaft support portion 88 is made of a material capable of plastic deformation, for example of metal. The shaft support portion 88 is made using, for example, electroforming.
The shaft 30 can be driven into the space 26, inside the shaft support portion 83 (the inner space 26, the central hole 83a).
When the shaft 30 is driven, the central portion 86a of the frame portion 86 of the shaft retention portion 83 is applied to the shaft 30, and is pushed outwardly by the shaft 30. As a result, the frame portion 86 undergoes elastic deformation such that the central portion 86a and its vicinity are displaced outwardly, and retains the shaft 30 due to its elastic force (elastic bending force).
With the retention of the shaft 30 by the shaft support portion 88, the mechanical component 80 is fixed to the shaft 30.
From the inner edge 84a of the central hole 84 with a generally triangular shape in a plan view, the central portion 84b on each side functions as a displacement limiting portion limiting the outward movement of the shaft 30 by abutting the frame portion 86 (more specifically the outer edge of the central portion 86a) as the shaft 30 moves out of its predetermined normal position.
The frame portion 86 of the shaft support portion 88 has sufficient elastic bending force, so that the mechanical component 80 is firmly attached to the shaft 30. Thus, it is possible to transmit the torque of the shaft 30 to the main body of component 81, which makes it possible to improve the accuracy of time measurement of the timepiece.
In addition, as in the case of the mechanical component 10 of the first embodiment, it is possible to increase the damping effect and to prevent a breakage of the mechanical component 80.
The shape of the central hole in a plan view is not limited to a triangular shape; it can be a polygonal shape having four or more corners.
Fourth embodiment, mechanical component
[0214] FIG. 11 is a plan view of a mechanical component 170 according to a fourth embodiment of the present invention.
As shown in FIG. 11, the mechanical component 170 comprises a substantially disk-like component main body 171, and a driving portion 172 provided within the component main body 171.
Retention recesses 175 are formed in the inner edge 174a of the central hole 174 (through hole).
Each retaining recess 175 has a proximal end portion 175a having a generally circular shape, to which the proximal end portion 179a of the shaft support portion 178 is attached, as well as a portion of extension 175b extending from the proximal end portion 175a to the inner edge 174a (inner surface) of the central hole 174. The width dimension of the extension portion 175b (first position) is smaller than the outer diameter of the proximal end portion 175a (second position). The holding recess 175 functions as an anchor structure limiting the displacement of the shaft support portion 178. The component main body 171 is made of a brittle material such as a ceramic material.
The driving portion 172 is formed by one or more shaft support portions 178. In FIG. 11, the driving portion 172 is formed by three shaft support portions 178.
Each shaft support portion 178 has a proximal end portion 179a having a generally circular shape in a plan view, as well as a distal end portion portion 176 extending from the end portion. proximal 179a. The proximal end portion 179a is attached to the proximal end portion 175a. A portion of the distal end portion 176 extends from the inner surface (inner edge 174a) of the central hole 174 into the space (interior space 26) in the central hole 174.
The distal end portion 176 differs from the distal end portion 176 shown in FIG. 9 in that it extends radially inwards. The thickness of the distal end portion 176 is smaller than the outside diameter of the proximal end portion 179a. It is preferred that the thickness of the distal end portion portion 176 be constant in the longitudinal direction.
The elongation percentage of the shaft support portion 178 is greater than the elongation percentage of the main component body 171. It is preferable that the shaft support portion 178 is made of a material capable of plastic deformation, for example of metal. The shaft support portion 178 is made, for example, by electroforming.
When the shaft 30 is driven into the interior space 26, the distal end portion 179b of the distal end portion 176 of the shaft support portion 178 is applied to the shaft 30, and it is pushed radially outwards by the shaft 30. The distal end portion 176 is compressed in the length direction, and undergoes a small elastic deformation so as to be shorter, retaining the shaft 30 by its force elastic compression.
By means of the retaining of the shaft 30 by the shaft support portion 178, the mechanical component 170 is fixed to the shaft 30.
The mechanical component 170 can safely transmit the torque of the shaft 30 to the main component body 171, which makes possible an improvement in the accuracy of time measurement of the timepiece. In addition, it is possible to increase the damping effect, and to prevent breakage of the mechanical component 170.
Fifth embodiment, mechanical component
[0225] FIG. 12A is a plan view of a mechanical component 180 according to a fifth embodiment of the present invention. Fig. 12B is an enlarged plan view of a portion of the mechanical component 180.
The mechanical component 180 comprises a substantially disk-like component main body 181 and a driving portion 182 provided within the main component body 181.
At the inner edge 184a of the central hole 184 (through hole), several (six in this example) holding recess 185 are formed at peripheral intervals.
Each retaining recess 185 has a proximal portion 185a to which a proximal portion 189a of the shaft support portion 188 is attached, as well as a portion of smaller width 185b having a smaller peripheral dimension compared to the portion proximal 185a. The smaller width portion 185b is on the inside radially of the proximal portion 185a. The main component body 181 is made of a brittle material such as a ceramic material.
Each shaft support portion 188 includes a pair of stationary portions 189, 189 provided in adjacent retaining recesses 185, 185, and an intermediate portion 200 provided to connect them together.
The immobile portions 189 are formed inside the retaining recesses 185. The portion formed in the proximal portion 185a will be called the proximal portion 189a, and the portion formed in the lower width portion 185b will be called the portion of lesser width 189b.
The lower width portion 185b of the retaining recess 185 has a smaller peripheral dimension in comparison with the proximal portion 189a of the stationary portion 189, so that the retaining recess 185 functions as an anchoring structure limiting the moving the shaft support portion 188.
The intermediate portion 200 comprises proximal portions 201, 201 extending generally inward from the immobile portions 189, 189, in the central hole 184, and an inner peripheral extension portion 202 connecting the distal ends (extension ends) of the proximal portions 201, 201. At the end portion of the inner peripheral extension portion 202, the intermediate portion 200 is curved. In what follows, this portion is called the curved portion 204.
The inner peripheral extension portion 202 extends in the peripheral direction of the main component body 181. The inner peripheral extension portion 202 is offset radially inward with respect to the inner edge 184a of the central hole 184 and still portions 189.
[0234] As shown in FIG. 12B, at the inner edge 202a of the inner peripheral extension portion 202, an inwardly protruding retaining boss 203 is formed. The retainer boss 203 is formed to extend in the longitudinal direction of the inner peripheral extension portion 202.
[0235] It is preferable that the retaining boss 203 is formed to extend over a portion of the length of the inner peripheral extension portion 202, for example over a range including the central portion in the longitudinal direction of the inner peripheral extension portion 202. It is preferable that the retaining boss 203 is formed on the central side in the longitudinal direction of the inner peripheral extension portion 202 beyond the curved portions 204.
It is preferable for the retaining boss 203 to protrude radially inward beyond the curved portion 204. This promotes a reduction in the stress concentration at the curved portion 204.
The inner edge 203a of the retaining boss 203 is formed to extend in the peripheral direction of the main component body 181, and may be applied to the outer peripheral surface of the shaft 30.
The percentage of elongation of the shaft support portion 188 is greater than the percentage of elongation of the main component body 181. It is preferable that the shaft 188 is made of a material capable of plastic deformation such that a metal. The shaft support portion 188 is made, for example, by electroforming.
When the shaft 30 is driven into the interior space 26, the inner edge 203a of the retaining boss 203 of the inner peripheral extension portion 202 of each shaft support portion 188 is applied against the 30, and is pushed radially outwardly by the shaft 30. By being pushed radially outwardly, the inner peripheral extension portion 202 undergoes a slight elastic deformation, and retains the shaft 30 by an elastic force bending.
The inner peripheral extension portion 202 has a shape extending in the peripheral direction of the main component body 181, so that a large peripheral portion of it is applied to the shaft 30. Thus, the force acting on the shaft support portion 188 is distributed to thereby prevent breakage of the shaft support portion 188, and at the same time it is possible to securely retain the shaft 30 by means of the inner peripheral extension portion 202.
In addition, the inner peripheral extension portion has a structure holding the shaft 30 by means of the retaining boss 203, so that the stress concentration at the end portions (curved portions 204) of the Inner peripheral extension portion 202 is reduced, which makes it possible to prevent the shaft support portion 188 from breaking.
By means of the retention of the shaft 30 by the shaft support portion 188, the mechanical component 180 is fixed to the shaft 30.
[0243] The shaft support portion 188 also allows a suppression of the retaining boss 203. When this is the case, the shaft 30 is retained by the inner edge 202a of the inner peripheral extension portion 202.
The mechanical component 180 is firmly attached to the shaft 30. Thus, it is possible to safely transmit a torque of the shaft 30 to the main body component 181, which makes it possible to improve the accuracy of time measurement of the timepiece. In addition, it is possible to increase the damping effect and prevent the mechanical component 180 from breaking.
Sixth embodiment, mechanical component
[0245] FIG. 13 is a plan view of a mechanical component 210 according to a sixth embodiment of the present invention.
The mechanical component 210 comprises a component main body 211 and a driving portion 212 provided inside the main component body 211.
At the inner edge 214a (inner surface) of a central hole 214 (through hole), a plurality of retaining recesses 215 are formed. Each retaining recess 215 is formed in a generally sector-shaped conformation in a plan view, having an arcuate peripheral edge 215a extending in a circumferential direction, and side edges 215b, 215b extending respectively to the interior from both ends of the peripheral edge 215a. Each of the side edges 215b, 215b has a projection 216, 216 at a location remote from the peripheral edge 215a (a location within the peripheral edge 215a).
The holding recess 215 functions as an anchoring structure limiting the inner and peripheral displacement of the shaft support portion 218 by means of a retaining of the shaft support portion 218.
The main component body 211 is made of a brittle material such as a ceramic material.
[0250] Each retaining recess 215 has the shaft support portion 218 which forms the driving portion 212.
Each shaft support portion 218 fills the inner space of the holding recess 215, and is shaped to protrude inwardly beyond the inner edge 217a of the intermediate portion 217.
[0252] The shaft support portion 218 has a generally sectoral shape which has, in a plan view, an arcuate peripheral edge 218a abutting against the peripheral edge 215a, a lateral edge 218b abutting against the lateral edge 215b , and an inner edge 218c extending in the peripheral direction.
Among the portions of the shaft support portion 218, the portion formed in the holding recess 215 is called the main portion 221 A, and the inwardly projecting portion beyond the inner edge 217a of the intermediate portion 217 is called the boss 222A.
The inner edges 218b, 218b of the shaft support portion 218 have depressions 224, 224 formed at locations remote from the peripheral edge 218a (locations within the peripheral edge 218a).
The elongation percentage of the shaft support portion 218 is greater than the percentage of elongation of the main component body 211. It is preferable that the shaft support portion 218 is made of a material capable of plastic deformation such as a metal. The shaft support portion 218 is made, for example, by electroforming.
The shaft support portion 218 has an opening 219 which is a through hole extending in the direction of the thickness. It is preferred that the aperture 219 be a slot extending in the peripheral direction of the component main body 211. It is preferred that the aperture 219 has a shape extending in the peripheral direction of the component main body 211. It is preferable that the two end portions of the opening 219 are positioned at locations near the two end portions in the circumferential direction of the shaft support portion 218 (eg, locations near the recess 224 or side edge 218b).
The portion inside the opening 219 is an inner peripheral extension portion 223 extending in the peripheral direction of the component main body 211. The inner peripheral extension portion 223 can securely retain the shaft 30 by means of an elastic bending force.
The opening 219 can absorb a deformation of the shaft support portion 218 generated by a retention of the shaft 30, so that it can prevent the shaft support portion 218 from breaking.
The opening 219 is a structure for applying an elastic bending force to the inner peripheral extension portion 223, and its shape is not limited to that of the example shown. For example, as long as it has a configuration extending over a sufficient peripheral range, it may not have a shape extending in the peripheral direction of the component main body 211.
In the manufacture of the mechanical component 210, it is possible to make the opening 219 using a core (not shown) in accordance with the shape of the opening 219. For example, in the step in which one forms the shaft support portion 218 (see the step shown in Figs 4A and 4B), the shaft support portion 218 is made with the aforementioned core installed within the through hole 34 of the element starting point 31, whereby it is possible to form the opening 219. After the shaft support portion 218 has been made, the core is removed from the shaft support portion 218.
The driving portion 212 shown in FIG. 13 is formed by a plurality of shaft support portions 218 arranged in the peripheral direction. The shaft support portions 218 constitute a configuration in which an annular body is divided in several places.
By forming the driving portion 212 in a divided configuration, a peripheral displacement of the driving portion 212 does not occur easily, and the strength of the attachment of the driving portion 212 relative to the main component body 211 is further increased, which makes it possible to prevent a backlash during operation of the mechanical component 210. Thus, it is possible to safely transmit a torque of the shaft 30 to the main component body 211.
[0263] The division number of the tree support portions is 1 or more; preferably, it is two or more; and, even more preferably, it is three or more.
The shaft 30 can be driven into the space 26 (inner space 26) on the inner side of the inner edges 218c of the shaft support portions 218.
When the shaft 30 is driven out, the shaft support portion 218 is pushed outwardly to undergo plastic deformation in the compression direction, and the inner edges 218c of the shaft support portions. 281 retain the shaft 30. In addition, the inner peripheral extension portions 223 are pressed radially outward, whereby they undergo a slight elastic deformation and securely retain the shaft by means of an elastic force. bending. As a result, the mechanical component 210 is attached to the shaft 30.
Thus, it is possible to safely transmit a torque of the shaft 30 to the main component body 211, which makes it possible to improve the accuracy of time measurement of the timepiece. In addition, the damping effect is increased, which makes it possible to prevent the mechanical component 210 from breaking.
First variant of the first embodiment, mechanical component
[0267] FIG. 14 is a schematic sectional view of a mechanical component 220 which is a first variant of the mechanical component 10 according to the first embodiment. Fig. 15 is a plan view of the mechanical component 220. FIG. 14 is a sectional view along the line XII-XII (dashed line) of FIG. 15.
As shown in FIG. 15, the mechanical component 220 comprises a component main body 221 and a driving portion 222. The driving portion 222 is formed by a plurality of shaft support portions 228. The end portions 229 of each support portion of shaft 228 are retained by retaining recesses 225. The portion between the end portions 229, 229 is called the intermediate portion 226.
[0269] As shown in FIG. 14, the inner surface 225b of the peripheral edge 225a of the retaining recess 225 is an inclined surface with a fixed angle, so as to have a diameter which decreases from the first surface 221a to the second surface 221b.
The shaft support portion 228 has a structure that fixes (adjusts) the displacement in the thickness direction (relative to the component main body 221). In particular, the outer surface 229b of the outer edge 229a of the end portion 229 of the shaft support portion 228 is an inclined surface with a fixed angle so as to decrease in diameter from the first surface 228c to the second surface. 228d of the shaft support portion 228; it is in abutment against the inner surface 225b, over its entire surface.
The outer diameter (maximum outside diameter) of the first surface 228c of the shaft support portion 228 is greater than the inside diameter (minimum inside diameter) of the second surface 221b of the retention trough 225, so that a downward movement of the shaft support portion 228 (movement in the direction of the thickness of the main component body 221) is set.
Due to this structure, the mechanical component 220 can prevent detachment of the shaft support portion 228, and increase the durability thereof.
Second variant of the first embodiment, mechanical component
[0273] FIG. 16 is a schematic sectional view of a mechanical component 230 which is a second variant of the mechanical component 10 according to the first embodiment. The mechanical component 230 has a shaft support portion 238 which has an intermediate portion 236 and end portions 239, 239.
[0274] The shaft support portion 238 has a structure for setting the displacement in the thickness direction (relative to the main component body 231). In particular, an end portion 239 of the shaft support portion 238 has an L-shaped section consisting of a main body portion 239a and an outer extension portion 239b.
[0275] The main body portion 239a is provided on the inner surface 235b of the peripheral edge 235a of the retaining recess 235. The outer extension portion 239b extends radially outwardly along the first surface 231a of the body main component 231 from the end portion, the side of the first surface 231a, of the main body portion 239a.
Due to the first surface 231a against which the outer extension portion 239b abuts, the shaft support portion 238 is fixed downwardly (the displacement in the direction of the thickness of the body component 231).
Due to this structure, the mechanical component 230 can prevent detachment of the shaft support portions 238 and increase the durability thereof.
Third variant of the first embodiment, mechanical component
[0278] FIG. 17 is a schematic sectional view of a mechanical component 240 which is a third variant of the mechanical component 10 according to the first embodiment. The mechanical component 240 has a shaft support portion 248 that has an intermediate portion 246 and end portions 249, 249.
The retaining recess 245 is formed not all the way in the direction of the thickness of the main component body 241, but only on a partial extent. In particular, the retaining recess 245 is formed over a thickness range from the intermediate position in the direction of the thickness to the first surface 241a.
The intermediate portion 246 of the shaft support portion 248 has the same thickness as the component main body 241, and is formed over the entire thickness of the main component portion 241.
The shaft support portion 248 has a structure for setting the displacement in the thickness direction (relative to the component main body 241). In particular, the end portion 249 of the shaft support portion 248 is thinner than the component main body 241, and is formed on a portion of the thickness of the component main body 241 (a range of thickness from the intermediate position in the direction of the thickness to the first surface 241a), and is located in the holding recess 245. Thus, because of the lower portion 245a of the retaining recess 245, the support portion of Shaft 248 is fixed downwardly (movement in the direction of the thickness of the main component body 241).
Due to this structure, the mechanical component 240 can prevent detachment of the shaft support portions 248, and increase the durability thereof.
Fourth variant of the first embodiment, mechanical component
FIG. 18 is a schematic sectional view of a mechanical component 250 which is a fourth variant of the mechanical component 10 according to the first embodiment. The mechanical component 250 has a shaft support portion 258 that has an intermediate portion 256 and end portions 259, 259.
The retaining recess 255 formed in the component main body 251 has a main portion 255c, a first surface recess 255d formed in the first surface 251a, and an outer edge recess 255eformed at the outer edge portion. of the first surface hollow 255d.
[0285] The main portion 255c is formed on the inner surface 255b of the peripheral edge 255a of the retaining recess 255. The outer edge trough 255e is formed as a recess facing the second surface 251b at the bottom surface of the portion external edge of the first surface hollow 255d.
The shaft support portion 258 has a structure for setting the displacement in the thickness direction (relative to the main component body 251). In particular, the end portion 259 of the shaft support portion 258 has a main body portion 259a, an outer extension portion 259b, and an outer edge projection 259c.
[0287] The main body portion 259a is provided on the main portion 255c over the entire thickness of the main component body 251. The outer extension portion 259b protrudes radially outwardly from the portion, next to the first surface 251a, of the main body portion 259a, and is formed in the first surface hollow 255d. The outer edge projection 259c protrudes from the outer edge portion of the outer extension portion 259b to the second surface 251b, and is formed in the outer edge depression 255e.
Due to the lower portion of the first surface recess 255d and the lower portion of the outer edge recess 255e, the shaft support portion 258 is fixed downwardly (movement in the direction of the thickness of the main component body 251).
Due to this structure, the mechanical component 250 can prevent detachment of the shaft support portions 258, and increase the durability thereof.
Fifth variant of the first embodiment, mechanical component
[0290] FIG. 19 is a schematic sectional view of a mechanical component 260 which is a fifth variant of the mechanical component 10 according to the first embodiment. The mechanical component 260 has a shaft support portion 268 which has an intermediate portion 266 and end portions 269, 269.
The holding recess 265 is formed over a portion of the extent of the main component body 261 in the thickness direction, i.e., the thickness range from the intermediate position in the direction of the thickness at the first surface 261a.
The shaft support portion 268 has a structure for setting the displacement in the thickness direction (relative to the main component body 261). In particular, the end portion 269 of the shaft support portion 268 is thinner than the component main body 261 and is formed on a portion of the thickness of the main component body 261 (the thickness extent ranging from the intermediate position in the thickness direction to the first surface 261a), and is located in the holding recess 265. Thus, the shaft support portion 268 is fixed downwardly (movement in the direction of the thickness of the main component body 261) due to the lower portion 265a of the holding recess 265.
The intermediate portion 266 of the shaft support portion 268 has the same thickness as the end portion 269, and is formed on the same thickness as the end portion 269.
Due to the above structure setting the displacement in the direction of the thickness, the mechanical component 260 can prevent detachment of the shaft support portions 268, and increase the durability thereof.
Sixth variant of the first embodiment, mechanical component
[0295] FIG. 20 is a schematic sectional view of a mechanical component 270 which is a sixth variant of the mechanical component 10 according to the first embodiment.
The shaft support portion 278 formed in the retention recess of the main component body 271 is capable of elastic deformation in the thickness direction of the main component body 271 and holds the shaft 30 due to the elastic force.
Timepiece
[0297] In the following, a movement and a timepiece according to one embodiment of the present invention is described with reference to the drawings. In the drawings to which reference is made, the scale of each element is suitably modified so that each element is large enough to be recognizable.
[0298] In general, the mechanical body including the driving portion of the timepiece is called the "movement". A dial and hands are mounted on the movement and the complete product obtained by putting the whole into a timepiece case is called the "complete timepiece". Of the two sides of the main plate forming the turntable of the timepiece, the side where is the ice of the timepiece, that is to say the side where there is the dial, is called "Back side" or "dial side" of the movement. On both sides of the plate, the side where there is the caseback of the timepiece, that is to say the opposite side of the dial, is called "front side" or "bottom side of case " some movement.
[0299] FIG. 21 is a plan view of a complete timepiece.
[0300] As shown in FIG. 21, a complete timepiece 1a of a timepiece 1 comprises a dial 2 having a graduation 3. etc. indicating time information, and needles 4 including an hour hand 4a indicating the time, a minute hand 4b indicating the minute, and a second hand 4c indicating the second.
[0301] FIG. 22 is a plan view of the front side of a movement. In fig. 22, so that the drawing is easy to examine visually, a part of the timepiece components constituting the movement is omitted.
The movement 100 of the mechanical timepiece comprises a main plate 102 constituting a plate. A winding stem 110 is rotatably mounted in a winding stem guide hole 102a of the main plate 102. The position, in the axial direction, of this winding stem 110 is determined by a switching device including a control lever 190, a flip-flop 192, a flip-flop spring 194 and an adjusting lever jumper 196.
And, when the winding rod 110 is rotated, a winding pinion 112 is rotated by means of the rotation of a clutch wheel (not shown). By rotating the winding pinion 112, a ring gear 114 and a ratchet 116 are rotated further, and a barrel spring (not shown) housed in a movement barrel 120 is cocked.
The movement barrel 120 is rotatably supported between the main plate 102 and a barrel bridge 160. A center mobile 124, an average mobile 126, a second mobile 128 and an exhaust mobile 130 are rotatably mounted between the main plate 102 and a gear bridge 162.
When the movement cylinder 120 rotates due to the restitution force of the mainspring, the center mobile 124, the average mobile 126, the second mobile 128 and the escape mobile 130 turn next. The movement barrel 120, the center wheel 124, the middle wheel 126 and the second wheel 128 constitute the front wheel.
When the center mobile 124 rotates, a roadway (not shown) rotates simultaneously on the base thereof, and the minute hand 4b (see Fig. 21) mounted on the roadway indicates the "minutes" . Further, based on the rotation of the roadway, an hour wheel (not shown) rotates by means of the rotation of a timer wheel (not shown), and the hour hand 4a (see FIG. 21) mounted on the hour wheel indicates the "hours".
An escapement device / regulating member for fixing the rotation of the front wheel is composed of the escape wheel 130, an anchor 142 and the mechanical component 10 (balance).
130a teeth are formed on the outer periphery of the escape mobile 130. The anchor 142 is rotatably mounted between the main plate 102 and an anchor bridge 164, and is equipped with a pair of pallets 142a and 142b. The escape mobile 130 is temporarily at rest, a pallet 142a of the anchor 142 being in engagement with the tooth 130a of the escape wheel 130.
The mechanical component 10 (balance) rotates back and forth in a fixed cycle, whereby the pallet 142a and the other pallet 142b of the anchor 142 are alternately engaged with and released from the tooth 130a of the mobile As a result, the escapement of the escape wheel 130 is effected at a fixed speed.
In the above construction, there is provided a mechanical component of the embodiment described above, so that it is possible to provide a movement and a timepiece having a high accuracy of time measurement.
The present invention is not limited to the embodiments described above but allows various modifications without departing from the scope of the principle of the present invention. In other words, configurations, constructions, etc. Embodiments of the embodiments are only given by way of example, and allow modifications as needed.

权利要求:
Claims (14)
[1]
A mechanical component configured to rotate about a shaft (30), comprising:a component main body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271) having a through hole (14; 74; 84; 174; 184; 214) through which the shaft (30); andone or more shaft support portions (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) formed on the inner surface of the through hole (14; 74; 84; 184; 214) and for securing the shaft (30) to the component main body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271);wherein the at least one shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) protrudes into the through hole (14; 74; 84; 174; 184; 214) from the inner surface of the through hole (14; 74; 84; 174; 184; 214) and are able to retain the shaft (30) by an elastic force; andwherein the percentage of elongation of the at least one shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) is greater than the percentage of elongation of the main component body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271).
[2]
The mechanical component according to claim 1, wherein the one or more shaft support portions (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) are made of a material capable of plastic deformation and capable of retaining the shaft (30) by an elastic bending force.
[3]
The mechanical component according to claim 1 or 2, wherein the one and the other end (19) of the shaft support portion (18; 228; 238; 248; 258; 268; 278) are each fixed. at the main component body (11; 221; 231; 241; 251; 261; 271), and the intermediate portion (16; 226; 236; 246; 256; 266) thereof has an arcuate shape at a distance the inner surface of the through hole (14); and the intermediate portion (16; 226; 236; 246; 256; 266) is capable of retaining the shaft (30) by an elastic bending force.
[4]
4. Mechanical component according to one of claims 1 to 3, wherein the main component body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271) has a hollow of retainer (15; 75; 85; 175; 185; 215; 225; 235; 245; 255; 265) as an anchor structure fixing the shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) retaining a portion of the shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278 ).
[5]
The mechanical component according to one of claims 1 to 4, wherein the inner surface of the through hole (14) has a displacement limiting projection (17) which, when the shaft (30) is moved away from its normal position. predetermined, stops the shaft (30) to limit its outward movement.
[6]
The mechanical component according to claim 1 or 2, wherein the shaft support portion (188; 218) has a pair of stationary portions (189), the one and the other end of which are respectively attached to the main body. component (181; 221), a proximal portion (201) extending from the immovable portion (189) into the central hole (184; 214), and an inner peripheral extension portion (202; 223) connecting the ends extending the proximal portions (201) to one another,the inner peripheral extension portion (202; 223) extending in a circumferential direction of the main component body (181) and being able to retain the shaft (30) by an elastic bending force.
[7]
The mechanical component of claim 6, wherein the inner peripheral extension portion (202) has an inwardly protruding retaining boss (203) engaging the shaft (30) to retain it,the retaining boss (203) projecting inwardly from an end portion of the inner peripheral extension portion (202).
[8]
The mechanical component according to one of claims 1 to 7, wherein the shaft support portion (218) has an opening (219) formed to extend in the peripheral direction of the main component body (211). ).
[9]
The mechanical component according to one of claims 1 to 8, wherein the shaft support portion (228; 238; 248; 258; 268) has a displacement attachment structure (229a, 229b; 239a, 239b; 249; 259b, 259c, 269) fixing the displacement in the thickness direction relative to the main component body (221; 231; 241; 251; 261).
[10]
10. Mechanical component according to one of claims 1 to 9, wherein the main component body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271) is made of a brittle material; andthe shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) is made of metal.
[11]
The mechanical component according to one of claims 1 to 10, wherein the shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) forms a driving portion (12; 72; 82; 172; 182; 212; 222) in which the shaft (30) is driven so as to be fixed to the shaft (30).
[12]
12. A movement comprising a mechanical component (10, 10A; 70; 80; 170; 180; 210; 220; 230; 240; 250; 260; 270) according to one of claims 1 to 11.
[13]
13. Timepiece comprising a movement (100) according to claim 12.
[14]
14. A method of manufacturing a rotating mechanical component (10, 10A, 70; 80; 170; 180; 210; 220; 230; 240; 250; 260; 270) around a shaft (30).the mechanical component comprising: a component main body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271) having a through hole (14; 74; 84; 174; 184; 214) in which the shaft (30) passes; andone or more shaft support portions (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) formed on the inner surface of the through hole (14; 74; 84; 184; 214) and for fixing the shaft (30) to the main component body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271);the at least one shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) protruding into the through hole (14; 74; 84; 174; 184; 214) from the inner surface of the through hole (14; 74; 84; 174; 184; 214) and being able to retain the shaft (30) by an elastic force;the percentage of elongation of the at least one shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) being greater than the percent elongation; main component body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271);the method comprising the steps of: forming a mask (32) having an interior configuration corresponding to the configuration of the at least one shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) and an outer configuration corresponding to the outer configuration of the main component body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271); at least one surface of a starting member (31) forming the main component body (11; 71; 81; 171; 181; 211; 221; 231; 241; 251; 261; 271), and forming a structure ( 34) for retaining the at least one shaft support portion (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) in the starting member (31). the inner configuration of the mask (32);forming the one or more shaft support portions (18; 78; 88; 178; 188; 218; 228; 238; 248; 258; 268; 278) made of the material by electroforming; andthe useless portions of the starting element (31) are removed according to the external configuration of the mask (32).

类似技术:

---

公开号 | 公开日 | 专利标题

---

CH710112A2|2016-03-15|Mechanical component, process for manufacturing a mechanical component, and movement timepiece.

---

EP2105807B1|2015-12-02|Monobloc elevated curve spiral and method for manufacturing same

---

EP2104006B1|2010-07-14|Single-body double spiral and method for manufacturing same

---

EP2196868B1|2012-07-25|Hairspring with curve elevation made from a silicon-based material

---

WO2013045706A2|2013-04-04|Integral assembly of a hairspring and a collet

---

EP1612627A1|2006-01-04|Bi-material autocompensating hairspring

---

CH707630A2|2014-08-29|Temperature compensated type balance, timepiece movement, mechanical timepiece and method of manufacturing such a temperature compensation type balance.

---

EP2257856A1|2010-12-08|Integral adjusting member and method for making same

---

EP2326995B1|2013-06-19|Gear system for a timepiece

---

CH710113B1|2020-10-15|Mechanical component, manufacturing process of a mechanical component, movement and timepiece.

---

CH706526A2|2013-11-15|Ferrule, sprung balance assembly equipped with such ferrule and timepiece including such an assembly.

---

EP2520984A1|2012-11-07|Barrel comprising additional relilient means for the accumulation of energy

---

CH704152B1|2017-04-28|Escapement exhaust and method of making a trigger.

---

FR3059792A1|2018-06-08|DEVICE FOR WATCHMAKING PART, CLOCK MOVEMENT AND TIMEPIECE COMPRISING SUCH A DEVICE

---

EP3502784A1|2019-06-26|Timepiece resonator with flexible guide

---

EP2690506B1|2015-01-14|Anti-tripping clock hairspring

---

CH704151B1|2016-02-29|Detent escapement mechanical watch and integrating it.

---

EP3066044B1|2020-06-10|Hollow micromechanical part which has a plurality of functional levels and is unitary made of a material comprising a synthetic carbon allotrope

---

CH709328B1|2020-03-31|Escapement, timepiece movement and timepiece.

---

CH706116B1|2018-02-28|Ferrule, sprung balance comprising such a ferrule and timepiece comprising such a sprung balance.

---

FR3065542B1|2019-07-12|METHOD FOR MANUFACTURING A MECHANISM

---

EP3839642A1|2021-06-23|Method for manufacturing timepiece springs and etching mask for such a method

---

CH714775B1|2019-09-13|Piton for fixing a spiral spring of a watch movement and methods of manufacturing such a stud.

---

EP2249215A2|2010-11-10|Chronograph watch with instantaneous display of the fractions of a second

---

EP3792700A1|2021-03-17|Timepiece oscillator with flexible pivot

同族专利:

---

公开号 | 公开日

---

US9678477B2|2017-06-13|

---

CH710112B1|2020-10-15|

---

CN105425570A|2016-03-23|

---

CN105425570B|2020-05-08|

---

US20160077491A1|2016-03-17|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US3142148A|1963-03-04|1964-07-28|Sunbeam Corp|Indicator|

---

US3659412A|1969-06-26|1972-05-02|Citizen Watch Co Ltd|Positioner for calendar dial in timepiece|

---

JPS4934206B1|1970-08-04|1974-09-12|

---

FR2398348B1|1977-07-20|1980-08-29|Ferodo Sa|

---

FR2469743B1|1979-11-16|1982-09-17|Suisse Horlogerie|

---

EP1445670A1|2003-02-06|2004-08-11|ETA SA Manufacture Horlogère Suisse|Balance-spring resonator spiral and its method of fabrication|

---

EP1708045A3|2005-03-22|2009-01-07|Patek, Philippe SA|Attachment of a clock wheel to an axis|

---

AT469377T|2006-11-09|2010-06-15|Eta Sa Mft Horlogere Suisse|ASSEMBLY ELEMENT COMPRISING REMOVABLE STRUCTURES IN THE FORM OF OTHER LAYING PLATES, AND WATCH EQUIPPED WITH THIS ELEMENT|

---

EP1921517B1|2006-11-09|2010-05-12|ETA SA Manufacture Horlogère Suisse|Assembly component comprising fork-shaped elastic structures and timepiece incorporating this component|

---

EP1921516B1|2006-11-09|2010-01-13|ETA SA Manufacture Horlogère Suisse|Assembly component comprising two series of elastic structures and timepiece incorporating this component|

---

JP5462006B2|2009-02-17|2014-04-02|セイコーインスツル株式会社|Escape governor, mechanical timepiece, and method of manufacturing ankle body|

---

JP2011053019A|2009-08-31|2011-03-17|Seiko Instruments Inc|Slip gear structure and timepiece with the same|

---

EP2400351B1|2010-06-22|2013-09-25|Omega SA|Single-piece mobile element for a clock piece|

---

EP2469357B2|2010-12-21|2016-06-29|The Swatch Group Research and Development Ltd.|Shock-absorbing bearing for a rotating mobile of a clock movement|

---

EP2761380A2|2011-09-29|2014-08-06|Rolex S.A.|Integral assembly of a hairspring and a collet|

---

US9292005B2|2011-12-12|2016-03-22|The Swatch Group Research And Development Ltd|Shock resistant bearing for a timepiece|

---

EP2743782B1|2012-12-11|2016-02-03|Nivarox-FAR S.A.|Device for assembly by deformation of resilient arms|

---

EP2765462B1|2013-02-12|2018-04-04|ETA SA Manufacture Horlogère Suisse|Anti-impact centre wheel|EP2988177A1|2014-08-21|2016-02-24|Universo S.A.|Hand of a watch|

---

EP3382472A1|2017-03-30|2018-10-03|Rolex Sa|Guide bearing of a timepiece balance pivot|

---

CN109507860B|2017-09-14|2022-03-01|精工爱普生株式会社|Timepiece component, timepiece movement, and timepiece|

---

US11114833B2|2017-12-28|2021-09-07|Furukawa Electric Co., Ltd.|Wire exterior body and exterior-covered wire harness|

---

EP3719583B1|2019-04-03|2021-11-10|ETA SA Manufacture Horlogère Suisse|Mechanical braking device for a clock mobile|

法律状态:

优先权:

---

申请号 | 申请日 | 专利标题

---

JP2014186363|2014-09-12|

---

JP2015135595A|JP6579695B2|2014-09-12|2015-07-06|Machine part, method for manufacturing machine part, movement and watch|

---