Mechanism for stabilizing the operation of the sprung balance, watch movement and mechanical watch.

专利摘要:
The present invention relates to a mechanism capable of stabilizing the operation of the sprung balance while preventing disruption of the balance cycle of the sprung balance by the gravitational force, and comprising a constant force device and a vortex. This operation stabilizing mechanism comprises: an outer carriage (33) to which a driving force of a drive train is transmitted and which is rotatably supported with respect to a main plate (11); an inner carriage (34) rotatably supported with respect to the outer carriage (33); a constant force spring (68) provided between the outer carriage (33) and the inner carriage (34) and which applies a rotational force to the inner carriage (34) so that the inner carriage (34) is rotatable by relative to the outer carriage (33); and an escapement mechanism (102) of the balance spring (101) mounted on the inner carriage (34) and configured to be driven by the rotation of the inner carriage (34) to orbit around the axis of rotation of the outer carriage (33). The invention also relates to a watch movement comprising such a mechanism and to a mechanical watch comprising such a movement.
公开号:CH708525B1
申请号:CH01331/14
申请日:2014-09-03
公开日:2018-12-14
发明作者:Kawauchiya Takuma；Takashi Niwa；Nakajima Masahiro；koda Masayuki
申请人:Seiko Instr Inc；
IPC主号:

专利说明:

Description
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mechanism for stabilizing the operation of a sprung balance, a watch movement and a mechanical watch. 2. Description of the Prior Art [0002] In the mechanical watch, when the rotational torque transmitted from the barrel drum to the escapement wheel fluctuates in response to unwinding of the main spring of the barrel drum, the angle of rotation oscillation of the sprung balance changes, which causes a change in the rate of the watch. Therefore, to eliminate the fluctuation of the rotational torque transmitted to the mobile escapement, it has been proposed a constant force device in which a constant force spring (pre-tension spiral spring) is disposed between the barrel drum and the exhaust.
As a constant force device, it has been proposed, for example, a device equipped with a stop wheel provided with a stop gear portion (pinion wheel stop), a mobile d exhaust with exhaust pinion (exhaust wheel shaft), clamping collar mounted on a clamping pinion gear, constant-force spring provided between the clamping collar and the movable member exhaust and a cam mounted on the exhaust pinion. The constant force spring provides a rotational force to the tailstock, so that the tailstock can rotate relative to the clamp.
In addition, in the mechanical watch, there is an eccentricity error of a dynamic center of gravity based on the inevitable irregularity of the configuration of the sprung balance; in addition, during operation, a displacement of the center of gravity is also generated due to the expansion and contraction of the sprung balance spring. Thus, in the case where the watch is placed in a vertical position, the oscillation cycle of the balance spring undergoes, under the influence of the gravitational force, a change depending on the direction of the time that arrives in the game. higher. As a mechanism to prevent a change in the oscillation cycle of the sprung balance depending on the direction of the gravitational force, there is a mechanism called vortex. In addition, a technique has been proposed whereby the above constant force device is integrated into the vortex mechanism.
The aforementioned mechanism is equipped with a fixed wheel (locking wheel of the second hand) and a carriage (drive gear) which rotates about the axis of this fixed wheel, and the mobile exhaust and sprung balance are mounted on the carriage. Moreover, the escapement wheel is rotated by the energy of the constant force spring. The rotation of the escape wheel is blocked or released by a pallet of a first anchoring device, while the rotation of a stop wheel is blocked or released by a pallet of a second anchoring device.
Here, when the rotation of the stop wheel is released, the stop wheel rotates with a single tooth. Then, the stopping wheel makes a planetary movement around the fixed wheel when the carriage is spinning. In addition, when rotation of the stopwheel is released, the clamping collar rotates, resulting in periodic winding of the constant force spring (see, for example, Japanese Patent No. 4,105,941 patent 1]).
In the prior art technique described above, however, the carriage rotates with the rotation of the stop wheel, so that the rotational movement of the carriage is an intermittent motion. Thus, the inertia applied to the carriage applies a shock to the sprung balance, so that the rotation of the sprung balance becomes relatively unstable. SUMMARY OF THE INVENTION [0008] This invention has been made to solve the above problem; one of the objects of the present invention is to provide a mechanism for stabilizing the operation of a sprung balance, a watch movement and a mechanical watch capable of stabilizing the operation of the sprung balance while preventing a change in the oscillation cycle of the sprung balance. spiral balance because of the gravitational force, including in the case where a constant force is applied.
To achieve this object, there is provided, according to the present invention, a mechanism for stabilizing operation comprising: a first carriage to which a driving force of a drive train is transmitted and which is supported so as to be able to rotate relative to a main stage; a second carriage rotatably supported with respect to the first carriage; a constant force spring with a first end attached to the first carriage and a second end attached to the second carriage, which is periodically armed by the rotation of the first carriage and which applies a rotational force to the second carriage; and an exhaust mechanism mounted on the second carriage and configured to be driven by the rotation of the second carriage.
With this embodiment, it is possible to slow the rotation operation of the second carriage on which the exhaust mechanism (regulator) is mounted. That is, it is possible to attenuate the intermittent motion of the second carriage. Thus, it is possible to operate the sprung balance so that the operation is stable, while preventing a change in the oscillation cycle of the sprung balance due to the direction of the gravitational force.
To achieve the object above, the exhaust mechanism of the operating stabilization mechanism according to the present invention is equipped with an escapement that rotates on the second carriage while the second carriage rotates, and a balance-spiral which undergoes an oscillation of rotation on the second carriage while the mobile escape rotates.
With this embodiment, it is possible to effectively drive the second carriage and reduce the energy loss of the mechanism of stabilization of operation.
To achieve the object above, in the operation stabilization mechanism according to the present invention, the first carriage is provided with a stop wheel; this stop wheel is equipped with a stop wheel bearing configured to rotate about the axis of rotation of the first carriage through the rotation of the first carriage, a stop wheel shaft body being supported by the stop wheel bearing rotatably, and a stop gear being configured to integrally rotate with the stop wheel shaft body, the second carriage having a configured latch to be engaged by the stop gear.
With this embodiment, it is possible to effectively drive the first carriage and reduce the energy loss of the stabilization mechanism of the operation.
To achieve the object above, the watch movement according to the present invention is provided with a mechanism for stabilizing the operation of a sprung balance as previously described.
With this embodiment, including in the case where a constant force device is provided, it is possible to provide a movement capable of operating the balance-spiral stably while preventing a change of the oscillation cycle the balance-spring because of the direction of the force of gravitation.
To achieve the object above, a mechanical watch according to the present invention is provided with a watch movement as described above.
With this embodiment, it is possible to provide a mechanical watch capable of operating the sprung balance stably while preventing a change of the oscillation cycle of the sprung balance because of the direction of the gravitational force. .
According to the present invention, it is possible to slow the rotation operation of the second carriage on which the exhaust mechanism is mounted. That is, it is possible to attenuate the intermittent operation of the second carriage. Thus, it is possible to operate the sprung balance stably, while preventing a change in the swing cycle of the sprung balance due to the direction of the gravitational force.
Short description of sketches [0020]
Fig. 1 is a plan view of the front face of a movement of a mechanical watch according to a first embodiment of the present invention.
Fig. 2 is a perspective view of a vortex with a constant force device according to the first embodiment of the present invention.
Fig. 3 is a sectional view taken along the axis A-A of FIG. 2.
Fig. 4 is a perspective view, seen from the bridge side of the fixed wheel, of an outer carriage according to the first embodiment of the present invention.
Fig. 5 is a perspective view, seen from the bridge side of the carriage, of an outer carriage according to the first embodiment of the present invention.
Fig. 6 is a plan view of a stop gear according to the first embodiment of the present invention.
Fig. 7 is a perspective view, seen from the bridge side of the fixed wheel, of an inner carriage according to the first embodiment of the present invention.
Fig. 8 is a perspective view, seen from the bridge side of the carriage, of an inner carriage according to the first embodiment of the present invention.
Fig. 9 is a perspective view of a bearing unit of the exhaust mechanism according to the first embodiment of the present invention.
Fig. 10 is a plan view of an exhaust mechanism according to the first embodiment of the present invention.
Fig. 11 is an explanatory view illustrating the operation of a stop wheel, a lock 96 and an escape wheel according to the first embodiment of the present invention, the portions (a) to (d) illustrating changes as time passes.
Fig. 12 is a perspective view, seen from the bridge side of the fixed wheel, of a main portion of a first variation of the first embodiment according to the present invention.
Fig. 13 is a perspective view of a lock of the first variation of the first embodiment according to the present invention.
Fig. 14 is a perspective view, seen from the bridge side of the fixed wheel, of a main portion of a second variation of the first embodiment according to the present invention.
Fig. 15 is a perspective view of an eccentric pin of the second variation of the first embodiment according to the present invention.
Fig. 16 is a plan view of a phase shift control mechanism of the second variation of the first embodiment according to the present invention.
Fig. 17 is a perspective view of a vortex with a constant force device according to a second embodiment of the present invention.
Fig. 18 is a perspective view of an outer carriage according to the second embodiment of the present invention.
Fig. 19 is a plan view of a constant force device according to the second embodiment of the present invention.
Fig. 20 is a perspective view of the constant force device according to the second embodiment of the present invention.
Fig. 21 is a side view of an inner carriage according to the second embodiment of the present invention.
Fig. 22 is an explanatory view illustrating the operation of the vortex with the constant force device according to the second embodiment of the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS [0021] (First Embodiment) [Mechanical Watch] [0023] Thereafter, the first embodiment of this invention will be described with reference to FIGS. 1 to 11.
FIG. 1 is a plan view of the front face of the movement of a mechanical watch 1.
As shown in the figure, the mechanical watch 1 is composed of a movement 10 and a housing (not shown) which accommodates this movement 10.
The movement 10 has a main plate 11 which constitutes the base plate. On the back of this main plate 11 is disposed a dial (not shown). A drive train integrated with the front of the movement 10 will be designated as the front wheel and a drive train integrated in the rear face of the movement 10 will be designated as the rear wheel.
The main plate 11 comprises a winding stem guide hole 11a, in which a winding shaft 12 is integrated so as to rotate. The axial position of this winding stem 12 is determined by a switching device provided with an adjusting lever 13, a sliding device 14, a sliding spring 15 and a setting lever jumper 16. in addition, a winding pinion 17 is provided, so as to be able to turn on the guide shaft portion of the winding stem 12.
In this structure, when the winding stem 12 is turned in a situation in which the winding stem 12 is in a first winding stem position (step 0), which is closest to the inside of the movement 10 along the rotation shaft, the winding pinion 17 rotates via the rotation of a clutch wheel (not shown). Moreover, by this rotation of the winding pinion 17, a match wheel 20 meshes with it. Moreover, by this rotation of the encounter wheel 20, a ratchet 21 rotates in meshing with it. In addition, by this rotation of the ratchet 21, a main spring (not shown) housed in a movement barrel 22 is armed.
In addition to the aforementioned movement cylinder 22, the front wheel of the movement 10 is composed of a center mobile 25, a third mobile 26, a second mobile 27 and a fifth mobile 28, and exerts a function of transmitting the rotational force of the movement cylinder 22. In addition, in front of the movement 10, a vortex 30 with a constant force device is installed to limit the rotation of the front wheel.
The center mobile 25 is meshing with the movement cylinder 22. The third mobile 26 is meshing with the center mobile 25. The second mobile 27 is in meshing with the third mobile 26. The fifth mobile 28 is in meshing with the second mobile 27. In addition, the vortex 30 with a constant force device is kept in mesh with the fifth mobile 28.
(Tourbillon with a constant force device) FIG. 2 is a perspective view of vortex 30 with a constant force device, FIG. 3 being a sectional view taken along the axis A-A of FIG. 2.
As shown in FIGS. 2 and 3, the vortex 30 with a constant force device is a mechanism for limiting the rotation of the aforementioned front wheel. In addition, the vortex 30 with a constant force device has a so-called vortex mechanism which attenuates the influence of the gravitational force due to the orientation of a sprung balance 101 described below, and suppresses the disturbance of the Operation of the sprung balance 101. Furthermore, the vortex 30 with a constant force device is equipped with a constant force device 3 in order to suppress the fluctuations of the rotational torque transmitted to an escape wheel 111 described below. .
In what follows, the vortex 30 with a constant force device will be described in detail.
The vortex 30 with a constant force device is equipped with a fixed wheel 31 fixed on the side of the main plate 11 of a fixed wheel bridge 29 mounted at the front of the main plate 11, a outer carriage (inlet portion) 33 rotatably supported between itself and a carriage bridge 32 disposed opposite the fixed wheel bridge 29 (see Fig. 3) and an inner carriage (portion output) 34 supported on the inner side of the outer carriage 33 so as to be rotatable relative to the outer carriage 33.
The fixed wheel 31 has a gear main body substantially similar to a disk 31a, and substantially radially in the center of the gear main body 31a there is provided a hole stone 31b for supporting the outer carriage 33 so that it can rotate. In addition, around the hole stone 31b of the gear main body 31a, a screw insertion hole 31c is formed for fixing the fixed wheel 31 to the fixed wheel bridge 29. A screw (not shown) is inserted in this screw insertion hole 31c. Furthermore, a toothed portion 31d is formed on the outer peripheral portion of the gear main body 31a.
[Outer carriage] FIG. 4 is a perspective view of the outer carriage 33 seen from the fixed wheel bridge side 29, and FIG. 5 is a perspective view of the outer carriage 33 as seen from the carriage bridge side 32.
As shown in FIGS. 2 to 5, the outer carriage 33 has a first substantially disk-like outer carriage bearing portion 35 disposed on the fixed wheel bridge side 29 and a second outer carriage bearing portion substantially similar to a bridge-side disk 36. The first outer carriage bearing portion 35 and the second outer carriage bearing portion 36 are disposed coaxially with the fixed wheel 31.
Furthermore, the first outer carriage bearing portion 35 is provided with a coaxial hole stone 35a with the hole 31b of the fixed wheel 31. This hole 35a stone is used to support the inner carriage 34 so that it can turn. In addition, a first outer rotary member 37 is provided on the fixed wheel bridge surface 29 of the first outer carriage bearing portion 35.
The first outer rotary member 37 is formed by the integration of a base portion 37a formed in a substantially disk-like configuration to correspond to the configuration of the first outer carriage bearing portion 35, and at a pinion portion 37b protruding toward the fixed wheel bridge side 29 from substantially the radial center of the base portion 37a. Furthermore, the base portion 37a is fixed to the first outer carriage bearing portion 35 by the screw 38. In addition, the pinion portion 37b is inserted into the hole stone 31b of the fixed wheel 31, which allows to the first outer rotary member 37 to be supported by the fixed wheel 31 rotatably.
On the other hand, the second outer carriage bearing portion 36 is provided with a hole stone 36a coaxial with the hole stone 35a of the first outer carriage bearing portion 35. This hole stone 36a is also used to support the inner carriage 34 so that it can rotate in cooperation with the hole stone 35a of the first outer carriage bearing portion 35. In addition, a second outer rotary member 39 is provided on the surface trolley bridge side 32 of the second outer trolley bearing portion 36.
The second outer rotatable member 39 is formed by the integration of a base portion 39a formed in a substantially disk-like configuration to correspond to the configuration of the second outer carriage bearing portion 36, and at a pinion portion 39b protruding toward the carriage bridge side 32 from substantially radially center of the base portion 39a. This pinion portion 39b is rotatably supported via the hole-shaped stone 32a of the carriage bridge 32. On the other hand, the base portion 39a is attached to the second outer carriage bearing portion 36 by a screw 40.
In addition, on the radially outer side of the first outer carriage bearing portion 35, there is an outer gear portion similar to a ring 41. This outer gear portion 41 is in mesh with the fifth mobile 28. .
Furthermore, the outer gear portion 41 and the first outer carriage bearing portion 35 are connected to one another by three first arm portions 42. The first three arm portions 42 extend. in the radial direction and are placed at equal intervals in the peripheral direction.
On the other hand, on the outer peripheral portion of the second outer carriage bearing portion 36, three second arm portions 43 extending radially outwardly are formed integrally. These second arm portions 43 are placed at equal intervals in the peripheral direction so as to correspond to the first arm portions 42 on the side of the first outer carriage bearing 35.
At the connection portions between the first arm portions 42 and the outer gear portion 41, and at the distal ends of the second arm portions 43, tree mounting seats substantially similar to disks. 44 and 45 are integrally formed. In addition, between these shaft mounting seats 44 and 45 is provided a shaft 46 which extends in the axial direction. Both ends of the shaft 46 are attached to the shaft mounting seats 44 and 45 by screws 47 threaded from the top of the shaft attachment seats 44 and 45.
In addition, between the first outer carriage bearing portion 35 and the outer gear portion 41, there is provided a support bridge 48 formed with a ring-like configuration so as to surround the first bearing portion of the carrier. outer carriage 35. The inner diameter of the support bridge 48 is set to be substantially equal to the outer diameter of the toothed portion 31 d of the fixed wheel 31.
Furthermore, the support bridge 48 is formed in one piece so as to be connected to the first arm portion 42. The support bridge 48 is provided with a stop wheel bearing unit 50 and a stop wheel 70 supported by this stop wheel bearing unit 50 rotatably.
Here, the stop wheel bearing unit 50 and the stop wheel 70 constitute a constant force device 3; the constant force device 3 has a constant force spring 68 and a lock 96 described below, in addition to the stop wheel bearing unit 50 and the stop wheel 70.
The stop wheel bearing unit 50 consists of a shaft-like insertion part similar to a ring 51 formed in one piece on the support bridge 48, of a first bearing portion. stop wheel 52 mounted on the fixed wheel bridge side 29 of the support bridge 48 and a second stop wheel bearing portion 53 mounted on the carriage bridge side 32 of the support bridge 48.
The first stop wheel bearing portion 52 has a wall portion 54 which extends toward the fixed wheel bridge side 29 from the position of the support bridge 48 corresponding to the insertion portion of the housing body. The wall portion 54 is formed in a substantially C-shaped sectional configuration so as to open radially on the inside. On the inner peripheral surface side of the distal end of the wall portion 54, a substantially disk-like bearing seat 55 is integrally formed so as to be perpendicular to the wall portion 54. radially centered of the bearing seat 55, a hole 55a extending through the bearing seat in the thickness direction is formed. In this hole 55a, there is provided a hole stone which supports the stop wheel 70 so that it can rotate.
Furthermore, on the side of the proximal end of the wall portion 54, a pair of posts 57 extending on both sides is formed in one piece, this wall portion 54 being between them. At the distal ends of the pair of posts 57, screw seats substantially similar to discs 57a are respectively integrally formed. These screw seats 57a are fixed to the support bridge 48 by screws 58.
On the other hand, the second stop wheel bearing portion 53 has a bearing seat substantially similar to a disc 61 placed in a position corresponding to the insertion portion of the shaft body 51 formed in the In addition, substantially centrally in the radial direction of the bearing seat 61, a hole 61a extending through the bearing seat in the direction of the thickness is formed. In this hole 61a, there is provided a hole stone 62 which supports the stop wheel 70 so that it can rotate.
In addition, on the outer peripheral portion of the bearing seat 61, on both sides of the hole stone 62, a pair of uprights 63 is formed in one piece. At the distal ends of the pair of posts 63, screw seats substantially similar to discs 63a are respectively integrally formed. The screw seats 63a are fixed to the support bridge 48 by screws 64.
Here, at the distal end portions of the screw seats 63a and the uprights 63, raised portions 63b are formed, a gap S1 being formed between the bearing seat 61 and the uprights 63 and the support bridge 48. A stop gear 72 constituting the stop wheel 70 is provided in this gap S1.
In addition to the stop gear 72, the stop wheel 70 has a stop wheel shaft 71 inserted into the insertion portion of the shaft body 51 formed in the support bridge 48. At both ends of the stop wheel shaft 71, pinion portions 71a and 71b are integrally formed. The pinion portion 71a of the fixed wheel bridge side 29 is rotatably supported via the hole stone 56 of the first stop wheel bearing portion 52. On the other hand, the pinion portion 71b the carriage side 32 is rotatably supported via the hole stone 62 of the second stop wheel bearing portion 53.
In addition, on the portion of the stopping wheel shaft body 71 from essentially the center in the axial direction to a position in front of the pinion portion 71a of the fixed wheel bridge side 29, a pinion portion 71c is formed in one piece. Here, the inside diameter of the support bridge 48 on which the stop wheel bearing unit 50 is provided is defined to be essentially the same as the outer diameter of the toothed portion 31 d of the fixed wheel 31, so the stopping gear portion 71c is in mesh with the toothed portion 31d. On the other hand, a stop gear 72 is installed on the portion for attachment in the vicinity of the base portion of the pinion portion 71b of the trolley bridge side 32 of said axle shaft body. stop 71, the stop wheel shaft 71 and the stop gear 72 being integrated with each other so as not to be rotatable relative to each other. [0059] FIG. 6 is a plan view of the stop gear 72.
As shown in the figure, the stop gear 72 is an element consisting, for example, of a metallic material or a material having a crystalline orientation such as monocrystalline silicon; it is formed by LIGA processes (Lithography Galvanoformung Abformung), DRIE (deep-ion reactive etching), MIM (metal injection molding), etc., using electrofusion or an optical process such as photolithography.
The stop gear 72 is formed by incorporating a central portion 73 placed on the stop wheel shaft body 71, a rim portion 74 disposed on the radially outer side of the central portion. 73 and formed in a ring-like configuration so as to surround the periphery of the central portion 73, and a radius portion 75 connecting the central portion 73 and the flange portion 74.
On the outer peripheral portion of the flange portion 74, a plurality of hook portions 76 (five in this embodiment) protrude radially outwardly. More specifically, the hook portions 76 are formed in a substantially triangular configuration as shown in the plan view in the axial direction, a substantially triangular opening 76a occupying the main central portion. Moreover, each hook portion 76 is formed so that the vertex P1 thereof is directed in the direction of rotation (clockwise in FIG. stop 72, the front 76b in the direction of rotation Y1 being defined to be smaller than the rear 76c in the direction of rotation Y1. In other words, the front 76b is formed to be in the continuity of the radius portion 75, while the rear 76c is formed to be in continuity with the flange portion 74. The Rotation operation of the stop gear 72 will be described in detail below.
Here, the radius portion 75 and the front 76b are formed in an arcuate configuration. In addition, the center of this arc is located coaxially with the axis C1 of the fixed wheel 31, that is to say the center of rotation of the outer carriage 33.
In this embodiment, a lock 96 described below and provided on the inner carriage 34 is engaged with the front 76b of each hook portion 76 and released therefrom.
In addition to this, as shown in FIGS. 4 and 5, on the support bridge 48, a ring-like bearing unit insertion portion 65 is integrally formed on the side diametrically opposed to the shaft body insertion portion 51 of the first portion. A bearing portion 133 of an exhaust mechanism bearing unit 130 described below is inserted into this bearing unit insertion portion 65. In addition, one of the bearing portions 133 of an exhaust mechanism bearing unit 130 described below is inserted into this bearing unit insertion portion 65. three first arm portions 42 protrude from the outer peripheral portion of the bearing unit insertion portion 65.
Furthermore, on the support bridge 48, a bolt carrier 66 is integrally formed in a position adjacent to the bearing unit insertion portion 65. A piton 67 is driven into this bolt carrier 66 An outer end portion of the constant force spring 68 is attached to the piton 67.
The constant force spring 68 serves to apply a rotational force to the inner carriage 34 relative to the outer carriage 33 and is formed in a spiral configuration. The inner end portion of the constant force spring 68 is attached to the inner carriage 34 via a ferrule 69.
FIG. 7 is a perspective view of the inner carriage 34 as seen from the fixed wheel bridge side 29, FIG. 8 being a perspective view of the inner carriage 34 as seen from the carriage bridge side 32.
As shown in FIGS. 2, 3, 7 and 8, the inner carriage 34 has a first inner carriage bearing portion substantially similar to a disc 81 disposed on the fixed wheel bridge side 29 and a second carriage bearing portion substantially similar to a disc 82 disposed thereon. on the carriage deck side 32. The first inner carriage bearing portion 81 and the second inner carriage bearing portion 82 are disposed coaxially with the first outer carriage bearing portion 35 and the second outer carriage bearing portion 36 of the outdoor trolley 33.
In addition, a first inner rotational member 83 is provided on the surface of the first outer carriage bearing portion 35 of the first inner carriage bearing portion 81. The first inner rotatable member 83 is integrally formed of a base portion 83a formed in a substantially disk-like configuration, of a shaft portion 83b protruding toward the first outer carriage bearing portion side 35 from substantially the radial center of the base portion 83a, and a pinion portion 83c protruding from the distal end of the shaft portion 83b so as to correspond to the configuration of the first inner carriage bearing portion 81.
Furthermore, the base portion 83a is fixed to the first inner carriage bearing portion 81 by a screw 84. In addition, the pinion portion 83c is inserted into the hole stone 35a of the first bearing portion. outer carriage 35, which allows the inner carriage 34 to be rotatably supported relative to the outer carriage 33.
Furthermore, the ferrule 69 of the constant force spring 68 is fixed to the shaft portion 83b. As a result, the biasing force of the constant force spring 68 is applied to the inner carriage 34 relative to the outer carriage 33. That is, the rotational force is applied to the inner carriage 34 by the constant force spring. 68 relative to the outer carriage 33.
On the other hand, a second inner rotatable member 85 is provided on the second side surface of the outer carriage bearing portion 36 of the second inner carriage bearing portion 82. The second inner rotary member 85 is integrally formed. a substantially disk-like base portion 85a and a pinion portion 85b protruding toward the second side of the outer carriage bearing portion 36 from substantially the radial center of the base portion 85a, so as to correspond to the configuration of the second inner carriage bearing portion 82. This pinion portion 85b is rotatably supported via the hole stone 36a of the second outer carriage bearing portion 36. In addition, the base portion 85a is attached to the second inner carriage bearing portion 82 by a screw 86.
In addition, the first inner carriage bearing portion 81 and the second inner carriage bearing portion 82 are respectively provided with anti-bearing bearings 87a and 87b. The anti-blocking bearings 87a and 87b are coaxially disposed with respect to the hole stone 35a of the first outer carriage bearing portion 35 and the hole stone 36a of the second outer carriage bearing portion 36. The anti-blocking bearings 87a and 87b serve to support a sprung balance 101 described below so that it can rotate.
In addition, on the outer peripheral portion of the first inner carriage bearing portion 81, three first arm portions 88 extending radially outwardly are formed in one piece. In addition, on the outer peripheral portion of the second inner carriage bearing portion 82, three second radially outwardly extending arm portions 89 are formed in one piece. The first arm portions 88 and the second arm portions 89 are placed at equal peripheral intervals; in addition, they are arranged so as to face each other in the axial direction. Furthermore, the first arm portions 88 are arranged to be located between the first three arm portions 42 formed on the outer carriage 33. Furthermore, the second arm portions 89 are arranged so as to be located between the three second arm portions 43 formed on the outer carriage 33.
In addition, at the distal ends of the arm portions 88 and 89, tree-like mounting seats substantially similar to discs 91 and 92 are respectively formed in one piece. In addition, between these shaft fixing seats 91 and 92, there is provided a shaft 93 which extends in the axial direction. Both ends of the shaft 93 are attached to the shaft mounting seats 91 and 92 by screws 94 threaded from the top of the tree attachment seats 91 and 92.
In addition, on the radially outer side of the first inner carriage bearing portion 81, there is provided a support bridge 95 formed in a ring-like configuration so as to surround the periphery of the first carriage bearing portion. 81. The inside diameter of the support bridge 95 is set to be substantially equal to the outside diameter of the toothed portion 31 d of the fixed wheel 31. In addition, the support bridge 95 is integrally formed of the first portion of arm 88 so as to be connected to it.
The support bridge 95 is provided with the lock 96. The lock 96 serves to perform the engagement / release with respect to the hook portions 76 of the stop wheel 70 with the rotational movement of the wheel. stop 70 provided on the inner carriage 34 and the outer carriage 33 (as will be described in detail below).
The lock 96 consists of a ratchet portion 98 coming into contact with the hook portions 76 of the stop wheel 70 and a support portion 99 supporting the ratchet portion 98. The support portion 99 is formed in a substantially Z-shaped sectional configuration and has a slot 99a on the fixed wheel bridge side 29 so that the stopping wheel side 70 can be opened. The pawl portion 98 is housed in this slot 99a and is fixed in this position. In addition, the side of the support portion 99 opposite the side to which the pawl portion 98 is attached is itself fixed to the support bridge 95 by a screw 97.
Furthermore, the support bridge 95 is provided with an exhaust mechanism bearing unit 130. The exhaust mechanism bearing unit 130 supports an exhaust mechanism 102 described below.
FIG. 9 is a perspective view of the exhaust mechanism bearing unit 130.
As shown in FIGS. 7 to 9, the exhaust mechanism bearing unit 130 consists of a ring-like shaft body insertion portion 131 integrally formed on the support bridge 95, of a bearing seat substantially like a disc 132, a bearing portion 133 mounted on the fixed wheel bridge side 29 of the support bridge 95 and an exhaust mechanism support 134 mounted on the carriage bridge side 32 of the support bridge 95 .
The shaft body insertion portion 131 is placed diametrically opposite the shaft body insertion portion 51 of the outer carriage 33, the first inner rotatable member 83 being positioned therebetween. In addition, the bearing seat 132 is adjacent to the shaft body insertion portion 131 and placed in a position where the support bridge 95 and the first arm portion 88 are connected. Essentially centrally in the radial direction of the bearing seat 132, a hole 132a extending through the bearing seat in the thickness direction is formed; a hole stone 132b is provided.
Furthermore, the bearing portion 133 has a wall portion 135 extending towards the fixed wheel bridge side 29 from a position corresponding to the shaft body insertion portion 131 of the support bridge 95. This wall portion 135 is inserted into the bearing unit insertion portion 65 formed in the outer carriage 33 and is formed to extend toward the stationary wheel 31. In addition, the wall portion 135 is formed in a substantially C-shaped sectional configuration so that its radially inner side can be opened. On the inner peripheral surface side of the distal end of the wall portion 135, a substantially disk-like bearing seat 136 is formed to be perpendicular to the wall portion 135. Essentially in the center radially of the bearing seat 136, a hole 136a extending through the bearing seat in the direction of the thickness is formed; a hole stone 137 is provided.
Furthermore, on the side of the proximal end of the wall portion 135, a pair of uprights 138 extending from both sides of the wall portion 135 is integrally formed. At the distal ends of the pair of posts 138, essentially disc-shaped screw seats 138a are respectively formed in one piece. The screw seats 138a are fixed to the support bridge 95 by screws 139.
On the other hand, the exhaust mechanism support 134 has two bearing seats substantially similar to discs 141 and 142 respectively placed in positions corresponding to the shaft body insertion portion 131 and the seats. Bearings 132 formed on the support bridge 95. Essentially at the radially centers of these bearing seats 141 and 142, holes 141a and 142a extending through the bearing seats in the thickness direction are formed. . Hole stones 143 and 144 are respectively provided in these holes 141a and 142a.
In addition, the exhaust mechanism support 134 has an upright 145 connecting the bearing seats 141 and 142. The upright 145 is formed in a substantially arcuate configuration in the plan view in the axial direction so as to match to the configuration of the support bridge 95. At both ends of the uprights 145, screw seats substantially similar to disks 145a are formed in one piece. The screw seats 145a are fixed to the support bridge 95 by spacers 146. The screw seats 145a are fixed to the support bridge 95 by screws 147.
Here, the exhaust mechanism support 134 is fixed to the support bridge 95 via the spacers 146, so that a gap S2 is formed between the support bridge 95 and the exhaust mechanism support. 134. An escape mechanism 102 is provided in this gap S2. The sprung balance 101 is provided between the anti-blocking bearings 87a and 87b of the inner carriage 34 made as described above.
As shown in FIGS. 3 and 8, the sprung balance 101 is equipped with a balance shaft 103 rotatably supported by the anti-blocking bearing 87a of the first inner carriage bearing portion 81 and the anti-assembly bearing 87b of the second portion. carriage bearing 82, a rocker wheel 104 mounted on the balance shaft 103 and a balance spring 105, and performs a normal and reverse rotation according to a fixed oscillation cycle due to the transmitted energy. by the balance spring 105.
The rocker shaft is a shaft body formed to be progressively reduced in diameter sequentially essentially from the center in the axial direction to the two axial ends. At both ends of the balance shaft 103, respective pinion portions 103a and 103b protrude axially outwardly. The pinion portions 103a and 103b are respectively rotatably supported via the anti-blocking bearings 87a and 87b. The rocker wheel 104 is fixed to the large-diameter portion 103c of a maximum shaft diameter substantially axially in the center and is integrated with the balance shaft 103 so as not to be rotatable relative thereto. . The large-diameter portion 103c has an outer flange portion 103c1 on the inner carriage first bearing side 81 of the balance wheel 104. The axially position of the balance wheel 104 is determined by this outer flange portion 103c1.
In addition, a double tubular roller 106 is fixed to the side of the outer flange portion 103c1 opposite the rocker wheel 104. At the lateral end of the large diameter portion 103c of the double roller 106, a portion an annular flange 106a protruding radially outwardly is formed in one piece. This flanged portion 106a is provided with a pulse pin 107 (see Fig. 3). The impulse pin 107 serves to swing a pallet fork 112 described below which constitutes the exhaust mechanism 102.
The balance spring 105 is, for example, a flat spring wound spirally in the same plane; the inner end portion thereof is attached to the second carriage bearing portion side 82 of the large diameter portion 103c of the balance shaft 103 via a ferrule 108. On the other hand, a pin 109 is mounted on the outer end portion of the balance spring 105. The peak 109 is fixed to a bolt carrier 110 provided on the second inner carriage bearing portion 82. In addition, the balance spring 105 accumulates the energy transmitted to the double roller 106 by the exhaust mechanism 102 and serves to transmit this energy to the balance shaft 103 and the rocker wheel 104.
[0093] (Escape mechanism) FIG. 10 is a plan view of the exhaust mechanism 102.
As shown in FIGS. 3 and 10, the escape mechanism 102 is equipped with an escape wheel 111 and an anchor 112 causing the escapement and the regular rotation of the escape wheel 111.
The escape mobile 111 is equipped with a shaft body 113 and an exhaust wheel portion 114 attached to the shaft body 113.
At both ends of the shaft body 113, a first pinion portion 113a and a second pinion portion 113b each reduced in step diameter are formed in one piece. The shaft body 113 is inserted into the shaft body insertion portion 131 of the support bridge 95, and the first pinion portion 113a is rotatably supported via the hole stone 143 of the support carrier. exhaust mechanism 134, while the second pinion portion 113b is rotatably supported via the hole stone 137 of the bearing portion 133.
An exhaust pinion portion 115 is integrally formed on the bearing seat side 136 of the bearing portion 133 of the shaft body 113. Here, the inner diameter of the support bridge 95 having the bearing unit exhaust mechanism bearing 130 is defined to be essentially the same as the outer diameter of the toothed portion 31 d of the fixed wheel 31, so that the exhaust pinion portion 115 is brought into engagement with this portion toothed 31 d.
As shown in FIG. 10, the exhaust wheel portion 114 is an element consisting, for example, of a metallic material or a material having a crystalline orientation such as monocrystalline silicon; it is formed by LIGA processes (Lithography Galvanoformung Abformung), DRIE (deep-ion reactive etching), MIM (metal injection molding), etc., using electrofusion or an optical process such as photolithography.
The exhaust wheel portion 114 has a substantially annular central portion 116 which is force-fitted into the shaft body 113. The shaft body 113 is force-fitted into the hole 116a formed in this central portion. 116. In addition, the central portion 116 exists in the gap S2 between the support bridge 95 and the exhaust mechanism support 134.
On the radially outer side of the central portion 116, there is provided a flange portion 117 formed in a ring-like configuration so as to surround this central portion 116. The flange portion 117 and the central portion 116 are connected together. by a plurality of spoke portions 118 (four in this embodiment). The spoke portions 118 extend radially and are at equal peripheral intervals.
In addition, at the outer peripheral edge of the flange portion 117, a plurality of toothed portions 119 (20 in this embodiment) are formed in a special configuration similar to a hook so as to protrude radially outwardly. . Pallets (ratchets) 125a and 125b of an anchor 112 described below are engaged with the distal ends of these toothed portions 119 and released therefrom.
As shown in FIGS. 8 to 10, the anchor 112 is equipped with a pallet axis 121, an anchor body 122 fixed to the anchor axis 121 and an anchor shaft 126.
The anchor pin 121 is a shaft member rotatably supported via a hole-shaped stone 132b provided in the support bridge 95 and via a hole-shaped stone 144 provided in the support of exhaust 134.
The anchor body 122 is formed by connecting two anchor arms 123a and 123b formed, for example, by electrofusion; an insertion hole 122a for insertion of the anchor pin 121 is formed on a connecting portion 123c of the two anchor arms 123a and 123b. In addition, the two anchor arms 123a and 123b extend in opposite directions from the connecting portion 123c.
The electrofusion metal forming the anchor body 122 can be, for example, chromium, which has a high hardness, nickel, iron and an alloy containing these metals.
At the distal ends of the two anchor arms 123a and 123b, slots 124a and 124b are respectively formed so as to be open on the side of the escape wheel 111. Paddles 125a and 125b are respectively fixed to the slots 124a and 124b by means of adhesive or the like. Pallets 125 are essentially rectangular stone prisms; they project from the distal ends of the anchor arms 123a and 123b towards the toothed portions 119 of the exhaust wheel portion 114.
On the other hand, the anchor shaft 126 is also formed, for example, by electrofusion; at its proximal end, an insertion hole 126a is formed to allow the insertion of the shaft shaft 121. In addition, it is inserted into the shaft shaft 121 and secured thereto by being inserted therein. from the escape mechanism support side 134 of the anchor body 122. The anchor shaft 126 is formed to extend from the shaft shaft 121 to the balance shaft side 103.
At the distal end of the anchor shaft 126, there is provided a pair of inlet horns 127 and an anchor escapement throat 128 placed between the pair of inlet horns 127. In addition, on the inner side of the pair of inlet horns 127, an anchor housing 129 is provided to engage with the sprocket pin 107 of the sprung balance 101 and disengaged therefrom.
[0110] (Operation of the vortex with constant force device) [0111] In what follows, the operation of the vortex 30 with constant force device will be described.
First, the operation of the sprung balance 101 and the exhaust mechanism 102 mounted on the inner carriage 34 will be described with reference to FIGS. 8 to 10. The spring balance 101 receives the rotational force of the escapement wheel 111 via the impulse pin 107 and executes a free oscillation due to the rotational force and the tension of the balance spring 105. A following the free oscillation of the sprung balance 101, the anchor shaft 126, which can be engaged with the impulse pin 107 and disengaged therefrom, oscillates laterally around the anchor axis 121 .
In addition, the anchor body 122 attached to the anchor axis 121 also oscillates integrally with the anchor shaft 126. As a result of the oscillation of the anchor body 122, the two pallets 125a and 125b come into alternating and repetitive contact with the toothed portion 119 of the exhaust wheel portion 114. It follows that the escapement wheel 111 rotates continuously at a fixed speed.
In what follows, the operation of the outer carriage 33 and the inner carriage 34 will be described with reference to FIGS. 11 and 12. Figs. 11a to 11d are diagrams showing the operation of the stop wheel 70 provided in the outer carriage 33 as well as the lock 96 and the wheel and exhaust pinion assembly 111 provided in the inner carriage 34.
First, the rotational force that the outer carriage 33 receives, and the operation of the stop wheel 70 which receives this rotational force, will be described.
In the outer carriage 33, the outer gear portion 41 is meshing with the fifth mobile 28, so that the rotational force of the movement barrel 22 is transmitted to the outer carriage 33 via the front wheel. In addition, in the stop wheel 70, the stop pinion portion 71c meshes with the toothed portion 31d of the fixed wheel 31. Thus, when the outer carriage 33 rotates, the stop wheel 70 rotates around of the fixed wheel 31 (clockwise in Fig. 11a, see arrow Y3) while rotating about the axis of the lock pin portion 71c (counterclockwise) a watch in Fig. 11a, see arrow Y2).
Next, the rotational force that the inner carriage 34 receives, and the operation of the escape wheel 111 which receives this rotational force will be described.
The inner carriage 34 is rotatably supported relative to the outer carriage 33 and is connected to the outer carriage 33 by the constant force spring 68. Thus, the inner carriage rotates relative to the outer carriage 33 when receives the prestressing force of the constant-force spring 68. In addition, with regard to the escape wheel 111, the exhaust pinion portion 115 is in mesh with the toothed portion 31d of the fixed wheel 31. Thus, when the inner carriage 34 rotates, the escape wheel 111 rotates about the fixed wheel 31 (clockwise in Fig. 11a, see arrow Y5) while rotating about the axis of the mobile exhaust 111 (clockwise in Fig. 11a, see arrow Y4).
Here, the escapement mobile 111 constitutes the escape mechanism 102 and constantly rotates at a fixed speed because of the anchor 112 and the balance-spring 101. That is to say that the mobile d Exhaust 111 rotates at a fixed speed, so that the inner carriage 34 which supports the escapement mobile 111 so that it can rotate rotates at a fixed speed. More specifically, the escape wheel 111 rotates at a fixed speed so that the inner carriage 34 performs one revolution per minute. In other words, the inner carriage 34 rotates 6 degrees per second. The inner carriage 34 performs one revolution per minute, so that the wheel and central gear assembly 25 performs one revolution per hour.
Here, the hook portion 76 of the stop wheel 70 and the pawl portion 98 of the lock 96 are engaged with each other and released from one another repeatedly.
As shown in FIG. 11 a, in the initial state in which the hook portion 76 of the stop wheel 70 and the pawl portion 98 of the lock 96 are engaged with each other (hereinafter, this initial state will be designated as the point Os), the area of the hook portion 76 corresponding to the rotation of 6 degrees around the axis of rotation of the outer carriage 33 and the inner carriage 34 is engaged with the ratchet portion 98. The rotation of 6 degrees corresponds to the angle at which the inner carriage 34 rotates in one second.
At this point Os, the rotation of the stop wheel 70 is regulated by the latch 96, so that the outer carriage 33 is at rest. In addition, due to the biasing force of the constant force spring 68, only the inner carriage 34 rotates. As a result of the rotation of the inner carriage 34, the escape wheel 111 continues to rotate.
[0123] Therefore, as shown in FIG. 11b, when 0.5 seconds elapses from the point Os, the inner carriage 34 rotates 3 degrees. In addition, the latch 96 attached to the inner carriage 34 also moves integrally with the inner carriage 34 (in a clockwise direction in Fig. 11b, see arrow Y6). Thus, the pawl portion 98 of the latch 96 slides in the release direction at the front 76b of the hook portion 76. In addition, the area of the hook portion 76 corresponding to the rotation of 3 degrees around the axis of rotation of the outer carriage 33 and the inner carriage 34 is engaged with the pawl portion 98.
Therefore, as shown in FIG. 11c, immediately before a second elapses from the point Os, that is to say when about 0.99 seconds has elapsed, the ratchet portion 98 slides further forward 76b of the portion of hook 76, until reaching the state immediately preceding the release of the engagement of the hook portion 76 and the ratchet portion 98. The following moment, that is to say when a second flow, the engagement of the hook portion 76 and the ratchet portion 98 is released.
[0125] Then, as shown in FIG. 11d, the outer carriage 33 rotates and with it the stopwheel 70 rotates about the fixed wheel 31 while rotating about the axis of the lock pinion portion 71c. In other words, the stop wheel 70 rotates while moving toward the lock 96. In addition, the pawl portion 98 which has been engaged with the hook portion 76 (76A) at the point Os is engaged with the next hook portion 76 (76B) and the stop wheel 70 stops again.
When the engagement of the hook portion 76 and the ratchet portion 98 is released, the stop wheel 70 rotates until it stops again; during this time, the outer carriage 33 rotates 6 degrees.
Here, following the rotation of the outer carriage 33, the pin 67 fixed to the outer carriage 33 also moves integrally with the outer carriage 33 (in the clockwise direction in FIG. see arrow Y7). Following the movement of the piton 67, the constant force spring 68 is armed. More specifically, the constant force spring 68 is armed with a quantity corresponding to six turns of the outer carriage 33.
In addition, with the constant force spring 68 armed, the outer carriage 33 (stopwheel 70) stops and the inner carriage 34 rotates due to the biasing force of the constant-force spring 68. repeating this, the inner carriage 34 and the escape wheel 111 continue to rotate at a fixed speed.
Thus, according to the first embodiment described above, while the rotational movement of the outer carriage 33 is an intermittent movement, it is possible to mitigate the operation of rotation of the inner carriage 34 on which the mechanism exhaust 102 and the sprung balance 101 are mounted. It follows that the inertia of the inner carriage 34 is reduced, which makes it possible to prevent a shock being applied to the spring balance 101. Thus, it is possible to make the balance spring 101 operate in a stable manner, while by preventing a change in the oscillation cycle of the sprung balance 101 due to the direction of the gravitational force.
In addition, since the escapement mechanism 102 and the sprung balance 101 operate due to the rotation of the inner carriage 34, it is possible to drive the inner carriage 34 effectively, which reduces the loss. energy of the constant force device 3.
Furthermore, the vortex 30 with a constant force device is rotatably supported relative to the fixed wheel 31; furthermore, it is provided with the outer carriage 33 and the inner carriage 34 which are rotatable relative to each other, the outer carriage 33 being provided with the stop wheel 70. In addition, the inner carriage 34 is equipped with the latch 96 which prevents or frees the rotation of the stop wheel 70. In addition, since the outer carriage 33 rotates, the stop wheel 70 rotates around the fixed wheel 31 while rotating around the pin of the pinion portion 71c. On the other hand, the latch 96 moves entirely with the inner carriage 34.
Thus, it is possible to prevent or release the rotation of the stop wheel 70 while rotating the latch 96 integrally with the inner carriage 34 and, in addition, while rotating the stop wheel 70 together with the outer carriage 33. Thus, it is possible to reduce the energy loss of the vortex 30 with a constant force device.
Furthermore, the vortex 30 with a constant force device rotates the stop wheel 70 around the fixed wheel 31 while driving its rotation, so that the stop wheel 70 is provided with a pinion portion 71c, said pinion portion 71c being kept meshing with the toothed portion 31d of the fixed wheel 31. It follows that it is possible to engage and disengage the pinion gear. stop 70 and lock 96 with each other in a simple structure. Thus, it is possible to obtain a reduction in the weight, size and cost of the vortex 30 with a constant force device.
In addition, the front 76b of the hook portion 76 of the stop gear 72 is formed in an arcuate configuration and the center of the arc is defined so as to be coaxial with the center of rotation of the outer carriage 33. That is, the configuration of the front 76b is the same as the trajectory of the ratchet portion 98 of the latch 96 which slides on its side 76b. Thus, when the ratchet portion 98 slides on the side 76b, no excessive load is applied to the stop gear 72.
[0135] That is, when, for example, the hook portion 76 protrudes further ahead of the direction of rotation Y1 (see Fig. 6) of the outer carriage 33 than in the first embodiment. above, it is necessary to apply a force which returns the stop gear 72 in the opposite direction as it slides the ratchet portion 98 in the release direction.
Thus, by forming the front 76b of the hook portion 76 in an arcuate configuration, and by defining the center of the arc so that it is coaxial with the center of rotation of the outer carriage 33, no excessive load is applied to the stop gear 72, which improves the efficiency of the operation of the vortex 30 with a constant force device.
The surface of the ratchet portion 98 that contacts the side 76b of the hook portion 76 may be formed in an arcuate configuration like the side 76b. With this embodiment, the hook portion 76 and the ratchet portion 98 are abutted face to face, thereby preventing high local pressure from being applied to the hook portion 76 and the ratchet portion. 78. It is therefore possible to increase the useful life of the stop gear 72 and the ratchet portion 98.
[0138] (First modification of the first embodiment) In the following, a first modification of the first embodiment will be described with reference to FIGS. 12 and 13.
[0140] FIG. 12 is a perspective view, seen from the fixed wheel bridge side 29, of a portion of the inner carriage 34 of the first modification of the first embodiment, and of the stop wheel 70 provided on the outer carriage 33, and FIG. 13 is a perspective view of a lock 196 according to the first modification of the first embodiment. The components which are the same as those of the first embodiment described above are indicated by the same reference numbers and their description will be excluded (this also applies to the second modification of the first embodiment, and to the second embodiment realization).
As shown in FIGS. 12 and 13, the first modification of the first embodiment differs from the first embodiment in that the configuration of the lock 96 of the first embodiment differs from that of the lock 196 of the first modification of the first embodiment.
More specifically, the lock 196 consists of a ratchet portion 98 coming into contact with the hook portion 76 of the stop wheel 70 and a support portion 150 supporting the ratchet portion 98 A support portion 199 is constituted by a ratchet support 151 of substantially rectangular configuration which retains the ratchet portion 98 and a ring-like attachment portion 152 integrally formed on one side of the ratchet holder. 151.
The ratchet support 151 has a pawl housing recess 151a so that the stop wheel side 70 can be opened and the ratchet portion 98 is housed therein.
In addition, the lock 196 is fixed in place, the fixing portion 152 being held between a first inner carriage bearing portion 81 and a first inner rotary member 83. More specifically, in the lock 196, the securing portion 152 is placed between the first inner carriage bearing portion 81 and the first inner rotatable member 83. In addition, it is secured in place by attaching the first inner rotatable member 83 to the first carriage bearing portion. 81 with a screw 84.
Here, an outer diameter E1 of the fixing portion 152 is determined to be substantially equal to the outside diameter of the first inner carriage bearing portion 81. In addition, an inner diameter E2 of the attachment portion 152 is determined so that the inner peripheral edge is located radially on the outer side of the position of placement of the screw 84. It follows that the fixing portion 152 does not interfere with the screw 84.
In addition, a slot 152a is formed in the fixing portion 152, which makes it possible to adjust the manufacturing error of the outside diameter E1 and of the inside diameter E2 of the fixing portion 152.
In this embodiment, during the fixing of the lock 196, the screw 84 is temporarily tightened. In addition, a precise adjustment is made to the peripheral position of the ratchet support 151 and the ratchet support 151 is set to a predetermined position before the screw 84 is tightened.
With this embodiment, in addition to the same effect as that of the first embodiment described above, it is possible to adjust the amount of engagement of the stop gear 72 and the portion of pawl 98 without changing the radial position in which the stop gear 72 of the stop wheel 70 and the pawl portion 98 of the latch 196 are engaged with each other.
[0149] (Second modification of the first embodiment) [0150] In the following, a second modification of the first embodiment will be described with reference to FIGS. 14 to 16.
[0151] FIG. 14 is a perspective view, seen from the fixed wheel bridge side 29, of a portion of the outer carriage 33 of the second modification of the first embodiment, and a portion of the inner carriage 34 thereof.
As shown in the figure, the difference between the first embodiment and the second modification of the first embodiment lies in the fact that in this second modification, there is provided a phase shift control mechanism 160 which eliminates the phase shift of the outer carriage 33 and the inner carriage 34 at a predetermined angle.
The phase shift control mechanism 160 is provided with a regulation ring 161 formed in one piece on the support bridge 48 of the outer carriage 33, and an eccentric pin 162 provided on the support bridge 95 of the inner carriage. 34 and inserted into the regulation ring 161.
The control ring 161 is placed between the bearing unit insertion portion 65 and the insertion portion of the shaft body 51 on the support bridge 48. On the other hand, the support bridge 95 of the inner carriage 34 has integrally, in a position axially opposite to the regulating ring 161, a disk-like pin attachment portion 163. The eccentric pin 162 is secured to the pin attachment portion 163 so as to protrude to the regulation ring 161.
[0155] FIG. 15 is a perspective view of the eccentric pin 162 and FIG. 16 is a plan view of the phase shift control mechanism 160.
As shown in FIG. 15, the eccentric pin 162 consists of a pin main body 162a and a securing pin 162b integrally formed at the proximal end of the pin main body 162a. In addition, by forcing the securing pin 162b into the pin fixing portion 163 of the inner carriage 34, the eccentric pin 162 is attached to the inner carriage 34. Here, the force insertion is referred to as a slight force insertion and is performed in such a way that the eccentric pin 162 can rotate about the axis of the securing pin 162b.
Here, the axis C2 of the main pin body 162a and the axis C3 of the securing pin 162b deviate from each other by a distance Ad. In addition, at the distal end of the pin main body 162a, a recess 164 is formed in the radial direction and it is possible to rotate the eccentric pin 162 using, for example, a paddle drive.
On the other hand, as shown in FIG. 16, a two-way gripping shape is formed on both sides in the circumferential direction at the inner circumferential surface of the regulating ring 161. A width W1 of the gripping shape in both directions is determined in such a way that the inner carriage 34 rotates relative to the outer carriage 33 and that, when the eccentric pin 162 abuts against the inner peripheral surface of the regulating ring 161, the angle of rotation of the inner carriage 34, relative to the outer carriage 33 , or included in a predetermined angle. It is desirable that this predetermined angle be, for example, 6 degrees. Six degrees is an angle at which the engagement of the stop gear 72 of the stop wheel 70 and the pawl portion 98 of the lock 96 is released (duration of one second); it is sufficient to ensure an angle of rotation of the inner carriage 34 relative to the outer carriage 33 corresponding to six degrees.
Here, by rotating the eccentric pin 162, it is possible to adjust the phase shift in the peripheral direction of the axis C2 of the pin main body 162a and the axis C3 of the securing pin 162b. Thus, even when a manufacturing error occurs at the control ring 161, it is possible to adjust the regulation of the rotation of the inner carriage 34 relative to the outer carriage 33 with great precision by rotating the eccentric pin 162.
Thus, according to the second modification of the first embodiment described above, besides the same effects as those of the first embodiment, including if a disturbance occurs in the mechanical watch 1 when, for example, As the watch falls, it is possible to prevent the inner carriage 34 from rotating to a greater extent than necessary with respect to the outer carriage 33. Thus, it is possible to prevent, for example, the constant-force spring 68 from completely unrolled, thereby reliably stabilizing the operation of vortex 30 with a constant force device.
In the second modification of the first embodiment described above, the regulation ring 161 is placed between the bearing unit insertion portion 65 on the support bridge 48 and the insertion portion of the body. 51. However, this should not be interpreted restrictively; the position of the regulating ring 161 can be determined arbitrarily on the support bridge 48. In addition, the position of the eccentric pin 162 can be determined arbitrarily according to the position of the regulating ring 161.
Furthermore, in the first embodiment described above, the front 76b of the hook portion 76 of the stop wheel 70 is formed in an arcuate configuration and the center of the arc is fixed on the center of rotation of the outer carriage 33 in the first embodiment and is determined coaxially with respect to a shaft body 231 of the second embodiment. However, this should not be interpreted restrictively; it is only necessary that the front be formed in a configuration allowing the engagement and the release with respect to the pawl portion 98 of the lock 96.
[0163] (Second Embodiment) [0164] In the following, the second embodiment will be described with reference to FIGS. 17 to 22.
[0165] FIG. 17 is a perspective view of a vortex 230 with a constant force device according to the second embodiment, FIG. 18 is a perspective view of an outer carriage 233 according to the second embodiment, FIG. 19 is a plan view of a constant force device 203 according to the second embodiment, FIG. 20 is a perspective view of the constant force device 203 according to the second embodiment and FIG. 21 is a side view of an inner carriage 234 according to the second embodiment.
[0166] In FIGS. 17, 18, 20 and 21, the lower side is the fixed wheel bridge side 29 and the upper side is the carriage bridge side 32. In FIGS. 17 to 21, the fixed wheel bridge 29 and the carriage bridge 32 are omitted.
As shown in FIGS. 17 to 21, the difference between the first embodiment and the second embodiment lies in the difference between the constant force device 3 of the first embodiment and the constant force device 203 of the second embodiment.
[0168] More specifically, as shown in detail in FIGS. 18 to 20, the outer vane carriage 233 of the vortex 230 with a constant force device has, substantially centrally in the radial direction of the first outer carriage bearing portion 235, a hole stone 235a which supports the inner carriage 234 so that it is rotatable, and at the same time a latch lever 171 which constitutes the constant force device 203 is rotatably supported.
The latch lever 171 is formed to extend while curving slightly from the center substantially radially outward in the radial direction of the first outer carriage bearing portion 235. The The proximal end portion 171a of the latch lever 171 is formed in a substantially disk-like configuration and this proximal end portion 171a is rotatably supported via the first outer carriage bearing portion 235.
In addition, the proximal end portion 171a has an insertion hole 171b which allows the insertion of a shaft portion 283b (see Fig. 21) of a first inner rotatable member 283 of the inner carriage. 234. The hole stone 235a of the first carriage bearing portion 235 is exposed via the insertion hole 171b.
Furthermore, the latch lever 171 is formed so as to gradually decrease towards the distal end. In addition, at the distal end 171c, a peripherally open slot 171d is formed and a pawl portion 172 is mounted in this slot 171d. The ratchet portion 172 protrudes in the peripheral direction from the distal end portion 171c of the lock lever 171.
In addition, substantially centrally in the longitudinal direction of the latch lever 171, a first arm 173a is formed in one piece. Furthermore, essentially at the center in the longitudinal direction of the latch lever 171, a second arm 173b is positioned to be in correspondence with the first arm 173a. The proximal end portion of the second arm 173b is attached to the lock lever 171 by means of a screw 174.
The arms 173a and 173b extend in the same direction as the direction of protrusion of the pawl portion 172 from essentially the center in the longitudinal direction of the latch lever 171 while being curved in the peripheral direction. On the other hand, the arms 173a and 173b are formed so as to gradually decrease towards their distal ends.
At the distal ends of arms 173a and 173b, bearing seats substantially similar to discs 175a and 175b are formed. Hole stones 176 are provided respectively at the bearing seats 175a and 175b. An inner carriage drive wheel 177 is supported by these hole stones 176 so as to be rotatable. A protuberance 175c is provided at the bearing seat 175b of the first arm 173a. The protuberance 175c is formed to protrude in the extension direction of the first arm 173a. The distal end of a constant force spring 268 described below comes into contact with the protuberance 175c.
As shown in detail in FIGS. 17 and 18, around the first outer carriage bearing portion 235, there is provided a support bridge 248 formed in a ring-like configuration so as to surround this first outer carriage bearing portion 235. The inner diameter of the bridge 248 is set to be substantially equal to the outside diameter of the toothed portion 31 d of the fixed wheel 31.
The support bridge 248 is provided with a stop wheel bearing unit 250 and a stop wheel drive wheel 178 supported by this stop wheel bearing unit 250 in a manner that to be able to turn, and a stopwheel 179.
The stop wheel bearing unit 250 consists of a ring-like shaft body insertion portion 251 integrally formed on the support bridge 248, of a hole stone ( not shown) placed closer to the pawl portion 172 of the latch lever 171 than this shaft body insertion portion 251, a first stub wheel bearing portion 252 mounted to the fixed wheel bridge side. 29 of the support bridge 248 and a second stop wheel bearing portion 53 mounted on the carriage bridge side 32 of the support bridge 248.
The first stop wheel bearing portion 252 has a wall portion 254 extending toward the fixed wheel bridge side 29 from a position corresponding to the shaft body insertion portion 251 of the wheel bridge. 248. The wall portion 254 is formed in a substantially C-shaped sectional configuration so as to open radially on the inside. On the inner peripheral surface side of the distal end of the wall portion 254, a substantially disc-like bearing seat 255 is integrally formed so as to be perpendicular to the wall portion 254. of the bearing seat 255, there is provided a hole stone (not shown) which supports the stopping wheel drive wheel 178 so that it can rotate.
On the side of the proximal end of the wall portion 254, a pair of uprights 257 extending from both sides is formed in one piece, this wall portion 254 being located therebetween. At the distal ends of the pair of posts 257, screw seats substantially similar to discs 257a are integrally formed. The screw seats 257a are fixed to the support bridge 248 by screws 258.
On the other hand, the second stop wheel bearing portion 253 has a substantially disk-like bearing seat 261a located in a position corresponding to the shaft body insertion portion 251 formed in the housing. support bridge 248, and a substantially disk-like bearing seat 261b located closer to the pawl portion 172 of the latch lever 171 than the bearing seat 261a. These bearing seats 261a and 261b are respectively provided with hole stones 262a and 262b. The bearing seat 262a hole 261a supports the stopping wheel 178 so that it can rotate in cooperation with the hole stone of the first stopping wheel bearing portion. 252. On the other hand, the hole 262b of the bearing seat 261b supports the stop wheel 179 so that it can rotate, in cooperation with a hole stone (not shown) provided in the bridge. support 248.
The second stop wheel bearing portion 253 has an amount 181 connecting the bearing seats 261a and 261b. The post 181 is formed so as to be substantially arcuate in plan view in the axial direction so as to correspond to the configuration of the support bridge 248. At both ends of the post 181, screw seats substantially similar to discs 181a are formed in one piece. The screw seats 181a are fixed to the support bridge 248 by spacers 182. The screw seats 181a are fixed to the support bridge 248 by screws 183.
Here, the second stop wheel bearing portion 253 is attached to the support bridge 248 via the spacers 182, so that a gap S3 is formed between the support bridge 248 and the second portion of the support bridge 248. Stop wheel bearing 253. In this gap S3, there is provided a drive gear 184 of the stop wheel drive wheel 178 and a stop wheel 179.
As shown in detail in FIGS. 18 to 20, in addition to the drive gear 184, the stopwheel drive wheel 178 has a drive wheel shaft body 185 inserted in the insertion portion of the shaft body 251 formed in the support bridge 248. At both ends of the drive wheel shaft body 185, pinion portions (not shown) are formed in one piece. These pinion portions are rotatably supported, respectively, via a hole stone (not shown) of the first stop wheel bearing portion 252 and via a hole stone 262a of the second wheel bearing portion. stop 253.
On the outer peripheral surface of the drive wheel shaft body 185, a drive wheel pinion portion 185a is integrally formed. Here, the inside diameter of the support bridge 248 on which the stop wheel bearing unit 250 is provided is defined to be substantially equal to the outer diameter of the toothed portion 31d of the fixed wheel 31, so that the drive wheel sprocket portion 185a is held in engagement with this toothed portion 31d. The drive wheel pinion portion 185a is also held in mesh with the inner carriage drive wheel 177.
On the other hand, the drive gear 184 is attached to the end portion of the side of the second stop wheel bearing portion 253 of the drive wheel shaft body 185, the drive wheel shaft body 185 and drive gear 184 being integrated so as not to be rotatable relative to each other. The drive gear 184 is held in mesh with the lock gear portion 187a which constitutes the stop wheel 179.
The stop wheel 179 has a stop gear 186 and a stop wheel shaft 187. In addition, the stop pinion portion 187a is integrally formed on the outer peripheral surface of the stop gear 187a. Stop Wheel Shaft Body 187. At both ends of the stop wheel shaft 187, pinion portions (not shown) are formed in one piece. These pinion portions are rotatably supported, respectively, via a hole stone (not shown) provided on the support bridge 248 and via a hole stone 262b of the second stop wheel bearing portion 253.
In addition, the stop gear 186 is attached to the end portion of the support bridge side 248 of the stop wheel shaft 187, the stop wheel shaft body 187 and the stop gear 186 being integrated so as not to be rotatable relative to each other. On the outer peripheral portion of the stop gear 186, a plurality of hook portions 188 (e.g., five) are formed to extend radially outwardly. The pawl portion 172 of the latch lever 171 is engaged with the hook portions 188 and released therefrom.
In addition to this, the support bridge 248 has, on the diametrically opposite side to the shaft body insertion portion 251 of the first outer carriage bearing portion 235, a bearing unit insertion portion. similar to a ring 265 formed in one piece on it. The bearing portion 133 of the exhaust mechanism bearing unit 130, which is provided on the inner carriage 234, is inserted into this bearing unit insertion portion 265.
Furthermore, the support bridge 248 is provided with a constant force spring 268 adjacent to the bearing unit insertion portion 265. The constant force spring 268 serves to apply a rotational force to the carriage 234 relative to the outer carriage 233. The constant force spring 268 is integrally formed with an attachment portion 268a adjacent to the bearing unit insertion portion 265 of the support bridge 248 and a body. bridge-like spring main 268b extending from said attachment portion 268a to the bearing seat 175b of the first arm 173a provided on the lock lever 171.
In addition, the fixing portion 268a is fixed to the support bridge 248 by a screw 189. On the other hand, the main spring body 268b extends until its distal end reaches the bearing seat. 175b of the first arm 173a, pressing a protrusion 175c protruding from the bearing seat 175b.
As shown in FIG. 21, the inner carriage 234 of the second embodiment has the same basic construction as the first embodiment described above in that it has a first carriage bearing portion substantially similar to a disk 81 placed on the side. fixed wheel bridge 29 and a second trolley-like bearing portion substantially similar to a disk 82 located on the trolley bridge side 32, in that a support bridge 95 formed in a ring-like configuration is provided in a manner surrounding the periphery of the first inner carriage bearing portion 81, in that the escape mechanism 102 and the spring balance 101 are mounted therein, etc.
Here, the inner carriage 34 of the first embodiment described above and the inner carriage 234 of the second embodiment differ from each other in that the configuration of the first inner rotational member 83 provided on the first inner carriage bearing portion 81 of the first embodiment is different from the configuration of the first inner rotational member 283 provided on the first inner carriage bearing portion 81 of the second embodiment.
That is, the first inner rotational member 283 of the second embodiment is integrally formed with a base portion 283a formed in a substantially disk-like configuration, a portion of shaft 283b protruding toward the first outer carriage bearing side 235 from substantially the radial center of the base portion 283a, and a pinion portion 283c protruding from the distal end of the shaft portion 283b, to be in correspondence with the configuration of the first inner carriage bearing portion 81.
The pinion portion 283c is inserted into a hole stone 235a of the first outer carriage bearing portion 235, which allows it to be rotatably supported relative to the outer carriage 233. The the distal end of the shaft portion 283b is formed to be progressively reduced in diameter. In addition, an inner carriage pinion portion 191 is formed at the pitch portion. This inner carriage pinion portion 191 is held in mesh with an inner carriage drive wheel 177 provided on the outer carriage 233.
[0195] (Operation of vortex with constant force device) [0196] In the following, the operation of a vortex 230 with a constant force device will be described with reference to FIG. 22.
[0197] FIG. 22 is a diagram showing the operation of vortex 230 with a constant force device.
The operation of the escape mechanism 102 and the sprung balance 101 mounted on the inner carriage 234 is the same as in the first embodiment described above; its description will therefore be omitted.
First, the operation of the outer carriage 233 and the constant force device 203 provided on the outer carriage 233 will be described.
As the outer gear portion 41 is meshing with the fifth wheel 28, the rotational force of the movement cylinder 22 is transmitted to the outer carriage 33 via the front wheel. With respect to the stop wheel drive wheel 178, the drive wheel pinion portion 185a meshes with the toothed portion 31d of the fixed wheel 31. Thus, when the outer carriage 233 rotates, the stopping wheel drive wheel 178 rotates about the fixed wheel 31 (clockwise in Fig. 22, see arrow Y9) while rotating about the axis of the stub portion. drive wheel sprocket 185a (counterclockwise in Fig. 22, see arrow Y8).
The drive gear 184 of the stopping wheel drive wheel 178 meshes with a stopping wheel gear portion 187a of the stopping wheel 179. Thus, the drive gear 184 stop 186 integrated with the stop wheel pinion portion 187a rotates about the fixed wheel 31 (clockwise in Fig. 22, see arrow Y11) while rotating about the axis of the stop wheel pinion portion 187a (counterclockwise in Fig. 22, see arrow Y10).
Here, in the state in which the pawl portion 172 of the latch lever 171 is engaged with the hook portion 188 of the stop gear 186, the rotation of the stop wheel 179 is regulated. It follows that the stop wheel 179, the stop wheel drive wheel 178 and the outer carriage 233 are at rest.
The amount of engagement (amount of meshing) of the hook portion 188 of the stop wheel 186 and the lock lever 171 at the point 0s is the same as that of the first embodiment described above. . That is, the area of the hook portion 188 corresponding to the six degree rotation about the axis of rotation of the outer carriage 233 and the inner carriage 234 is engaged with the pawl portion 172.
On the other hand, with respect to the latch lever 171 rotatably supported, via the first outer carriage bearing portion 235 of the outer carriage 233, the first arm 173a attached to the lock lever. 171 is compressed by the constant force spring 268. Thus, the latch lever 171 rotates about the axis of the proximal end portion 171a so that the pawl portion 172 deviates from the wheel. stop 179 (clockwise in Fig. 22, see arrow Y12).
At this point, the inner carriage drive wheel 177 moving integrally with the lock lever 171 is in mesh with the drive wheel pinion portion 185a; furthermore, the ratchet portion 172 and the hook portion 188 of the stopwheel 179 are engaged with each other so that the drive gear sprocket portion 185a is at rest, in such a way that the inner carriage drive wheel 177 rotates (counterclockwise in Fig. 22, see arrow Y13).
In addition, since the inner carriage pinion portion 191 meshes with the inner carriage drive wheel 177, the inner carriage pinion portion 191 rotates (clockwise). in Fig. 22, see arrow Y14). In addition, the inner carriage 234 integrated with the inner carriage pinion portion 191 rotates and the escapement mechanism and the spring balance 101 (see Fig. 21) are driven.
Therefore, when a second flows from the point Os, the engagement of the hook portion 188 of the stop gear 186 on the one hand and the ratchet portion 172 of the locking lever lock 171 on the other hand is released. Then, the outer carriage 233 rotates. Moreover, in addition to this, the stopwheel drive wheel 178 rotates about the fixed wheel 31 while rotating about the axis of the drive wheel sprocket portion 185a; at the same time, the stop wheel 179 rotates about the fixed wheel 31 while rotating about the axis of the stop wheel pinion portion 187a. In other words, the stop wheel 179 moves by turning toward the pawl portion 172 of the lock lever 171.
In addition, the stop wheel 179 is engaged with the hook portion 188 (188B) located next to the hook portion 188 (188A) which has been engaged with the ratchet portion 172 at the point 0s, and stops again. When engagement of the hook portion 188 and the pawl portion 172 is released, the stop wheel 179 rotates; the angle at which the outer carriage 233 rotates until the stop wheel 179 stops is six degrees.
[0209] Thus, the second embodiment described above has the same effect as the first embodiment described above.

权利要求:
Claims (5)
[1]
claims
A mechanism for stabilizing the operation of a sprung balance (101) comprising: a first carriage (33) to which a driving force of a drive train is transmitted and which is rotatably supported with respect to a main plate (11); a second carriage (34) rotatably supported relative to the first carriage (33); a constant force spring (68) with a first end attached to the first carriage (33) and a second end attached to the second carriage (34), which is periodically armed by the rotation of the first carriage and which applies a rotational force the second carriage (34); and an escapement mechanism (102) of the sprung balance (101) mounted on the second carriage (34) and configured to be driven by the rotation of the second carriage (34).
[2]
The mechanism for stabilizing the operation of a sprung balance (101) according to claim 1, wherein the exhaust mechanism (102) is provided with an escape wheel (111) which rotates on the second carriage ( 34), and said sprung balance (101) which undergoes rotation oscillation on the second carriage (34) when the movable tail (111) rotates.
[3]
A stabilizer operation of a sprung balance (101) according to claim 1 or 2, wherein the first carriage (33) is provided with a stop wheel (70); this stop wheel (70) is provided with a stop wheel bearing (50) configured to orbit around the axis of rotation of the first carriage (33) when the first carriage (33) is rotated; a stopping wheel shaft body (187) rotatably supported by the stopping wheel bearing (50), and a stopping gear (186) configured to integrally rotate with the stall body (186); stop wheel shaft (187); and the second carriage (34) is provided with a latch (36) configured to engage with the stop gear (186).
[4]
4. Watch movement with a mechanism for stabilizing the operation of a balance spring (101) according to claim 1.
[5]
5. Mechanical watch with a watch movement according to claim 4.

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同族专利:

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公开号 | 公开日

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US9164486B2|2015-10-20|

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US20150063083A1|2015-03-05|

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CH708525A2|2015-03-13|

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JP6143185B2|2017-06-07|

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CN104423241B|2018-05-04|

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JP2015049230A|2015-03-16|

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CN104423241A|2015-03-18|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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JP2013183352A|JP6143185B2|2013-09-04|2013-09-04|Operation stabilization mechanism, movement and mechanical watch|

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