• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a mobile timepiece component (10), comprising around an axis (D), a first element (1) comprising a first bearing surface (15) and a second element (2) comprising a second bearing surface (25). ) which cooperates by friction with a third bearing surface (30) which comprises a third element (3) interposed between the first element (1) and the second element (2), this third element (3) comprises a fourth bearing surface (35) cooperating by friction with the first bearing (15) or which is fixed on this first bearing (15), and the diameter of the third bearing (30) is at least double the diameter of the fourth bearing (35). The fourth bearing (35) and the first bearing (15) are cylindrical about the axis (D). Also disclosed is an adjustable display mechanism including said movable component (10).
    公开号:CH716859A2
    申请号:CH01106/20
    申请日:2020-09-07
    公开日:2021-05-31
    发明作者:Bachmann Stéphane；Cattin Christophe；Cosandier Yves-Alain；Kaelin Laurent
    申请人:Eta Sa Mft Horlogere Suisse；
    IPC主号:
    专利说明:

    Field of the invention
    The invention relates to a mobile timepiece component with an element held by friction, comprising a first element comprising a first bearing surface around an axis, and a second element comprising a second bearing surface around said axis.
    [0002] The invention also relates to an adjustable display mechanism, comprising at least one such mobile component.
    [0003] The invention also relates to a timepiece movement comprising at least one such adjustable display mechanism, and / or at least one such mobile component.
    [0004] The invention also relates to a timepiece, in particular a watch, comprising at least one such movement, and / or at least one such adjustable display mechanism, and / or such a movable component.
    The invention relates to adjustment or adjustment mechanisms for display mechanisms or clockwork movements.
    Background of the invention
    [0006] Friction devices are commonly used in watchmaking for display correction mechanisms, such as setting the time, or the like. These devices have a number of well-known drawbacks:poor stability of the friction, and poor control of the friction, in particular in mechanisms of small dimensions, which affects the sensitivity of the system;the mounting interface is often unfavorable, when this friction concerns the usual case of bearing a board on a hub, and problems can be linked to the presence of burrs, the lack of flatness of the board, a deformation of the board, or the like, which results in non-regular and non-reproducible phenomena, and, in the worst case, by pollution of the clockwork movement by detachable particles;the case of functional friction on a small diameter is always more difficult, due to low friction, and greater dispersion than in more widely dimensioned mechanisms, for which the geometric constraints are less and where the torque values friction can be very much greater than those of other friction couples in the movement. These small diameters are very common in ladies' watches, and of course in miniature movements, but they are not uncommon in other watches, because manufacturers are obliged to limit the volume consumed within a movement by such friction adjustments.
    [0007] Document US417644 in the name of HUNTER describes a lanterned roadway and a sleeve arranged for its attachment to a tree, which are arranged to cooperate through an elastic connection.
    Summary of the invention
    The invention proposes to develop a friction mechanism overcoming the drawbacks of the prior art, in particular for the case of small diameters, and so as to allow good hold, and precise adjustment capacities, to facilitate the pairings of the components, to facilitate assembly, while retaining a moderate manufacturing cost, and eliminating the risk of dissemination of burrs or scratches in the clockwork movement. To do this, the invention produces the friction over a diameter greater than what is known, and this friction occurs in particular between a board and an intermediate component which allows adjustment.
    [0009] To this end, the invention relates to a mobile timepiece component with an element held by friction, according to claim 1.
    The invention also relates to an adjustable display mechanism, comprising at least one such mobile component.
    The invention also relates to a timepiece movement comprising at least one such adjustable display mechanism, and / or at least one such mobile component.
    The invention also relates to a timepiece, in particular a watch, comprising at least one such movement, and / or at least one such adjustable display mechanism, and / or such a movable component.
    Brief description of the drawings
    Other characteristics and advantages of the invention will become apparent on reading the detailed description which follows, with reference to the accompanying drawings, where:FIG. 1 schematically shows a bottom view of a mobile timepiece component, which comprises a first element, and which comprises a second element held by friction, according to the invention; we see in the central part a journal that comprises the first element; this journal is inserted into a third element, which is interposed between the first element and the second element, and which cooperates by friction with the second element here constituted by a board provided with teeth in this particular non-limiting case; this board comprises a main recess, and secondary recesses, which delimit the flexible arms that this second element comprises, which flexible arms come to grip with friction a bearing of the third element; we see, through these recesses, the first drive means, here fingers, which comprises the first element;FIG. 2 represents, schematically and in section in a plane perpendicular to the axis, the same movable clockwork component at the level of the friction, which is here a two-point type friction, between the second element and the third element; the flexible arms of the second element have bearing surfaces that are eccentric with respect to the main axis;FIGS. 3 to 5 represent, schematically in section along the section plane AA of FIGS. 1 and 2 and passing through the main axis, three non-limiting variant embodiments relating to the geometry of a second internal bearing surface of the second element and of a third external bearing surface of the third element, at the interface of which friction takes place:in FIG. 3, the second internal seat and the third external seat are both cylindrical;in FIG. 4, the second internal seat and the third external seat are both tapered;in FIG. 5, the second internal bearing surface is cylindrical and the third external bearing surface is conical;FIG. 6 represents, schematically and in exploded perspective, the mobile timepiece component of FIGS. 1, 2, and 3, with an ascending axial arrow showing the pre-assembly of the second element with the third element;FIG. 7 represents, in a manner similar to FIG. 6, the end of the assembly of this mobile component, with an ascending axial arrow showing the assembly of the sub-assembly, constituted by the second element and the third element, on the journal of the first element;FIG. 8 is a block diagram which represents a timepiece, in particular a watch, comprising a timepiece movement which itself comprises an adjustable display mechanism comprising a movable timepiece component according to the invention.
    Detailed description of the preferred embodiments
    The invention relates to a movable clockwork component 10 with an element held by friction. This mobile component 10 comprises a first element 1, which comprises a first bearing surface 15, in particular at the level of a journal 11, around an axis D, and a second element 2, which comprises a second bearing surface 25 around the axis D.
    According to the invention, the second bearing surface 25 of the second element 2 cooperates by friction with a third bearing surface 30 which comprises, around the axis D, a third element 3. This third element 3 is interposed between the first element 1 and the second element 2, and this third element 3 comprises a fourth bearing surface 35. This fourth bearing surface 35 cooperates by friction with the first bearing surface 15, or else is fixed on the first bearing surface 15. And the minimum bearing diameter, relative to the axis D, of the third bearing 30 is at least double the maximum support diameter of the fourth bearing 35.
    In a variant, the fourth bearing 35 cooperates by friction with the first bearing 15. More particularly, the friction torque between the fourth bearing 35 and the first bearing 15 is then greater than the friction torque between the second bearing 25 and the third litter 30.
    In another variant, the fourth bearing 35 is driven on the first bearing 15. More particularly, the fourth bearing 35 is stopped on the first bearing 15 by at least one weld point.
    More particularly, the first element 1 comprises a first abutment bearing surface 12, which is arranged to cooperate in axial abutment bearing, in the direction of the axis D, with a second abutment bearing surface 21 contained in the second element 2.
    More particularly, the first element 1 comprises an internal stop bearing surface 13, which is arranged to cooperate in axial stop bearing, in the direction of the axis D, with an internal stop bearing surface complementary 31 included in the third element 3.
    More particularly, the third element 3 comprises an outer abutment bearing surface 32, which is arranged to cooperate with a complementary outer abutment bearing surface 23 that the second element comprises, to limit their relative axial travel according to the direction of the axis D. More particularly, the space between the outer abutment bearing surface 32 and the complementary outer abutment bearing surface 23 is arranged to allow the introduction of a feeler gauge for adjust the value of the clamping between the third element 3 and the second element 2 and therefore the value of the friction exerted by the second element 2 on the third element 3. Thus the friction is adjustable according to the flush height.
    More particularly, the first element 1 comprises at least first drive means 19, and / or the second element 2 comprises at least second drive means 29.
    More particularly, the second element 2 comprises a main recess 20 delimiting at least two bearing surfaces 201, 202, each comprising one or two bearing sectors belonging to the second bearing surface 25. More particularly still, this main recess 20 delimits two bearing surfaces 201, 202, each comprising two bearing sectors belonging to the second bearing surface 25, and the main recess 20 is cleared between the bearing sectors, for a bearing limited to four points between the first item 1 and the second item 2.
    More particularly, the second element 2 exerts a friction on the third element 3 by flexible arms 27, which are arranged between the main recess 20 and secondary recesses 28.
    More particularly, the third element 3 comprises at least one insertion surface 36, 37, 38, 39, which is conical or spherical, or the like, for its insertion on the first element 1 or in the second element 2.
    More particularly, the fourth bearing 35 and the first bearing 15 are of revolution about the axis D. According to the invention, the fourth bearing 35 and the first bearing 15 are cylindrical around the axis D.
    In a variant, the geometric support of the second bearing 25 is cylindrical about an axis parallel to the D axis and distant from the D axis.
    In another variant, the geometric support of the second bearing 25 is conical about an axis parallel to the D axis and distant from the D axis.
    More particularly, the geometric support of the third span 30 is of revolution about the axis D. In one variant, the geometric support of the third span 30 is cylindrical around the axis D. In another variant, the geometric support of the third span 30 is conical around the axis D.
    The invention also relates to an adjustable display mechanism 50, comprising at least one such mobile component 10.
    The invention also relates to a timepiece movement 100 comprising at least one such adjustable display mechanism 50, and / or at least one such movable component 10.
    The invention also relates to a timepiece 1000, in particular a watch, comprising at least one such timepiece movement 100, and / or at least one such adjustable display mechanism 50, and / or at least one such mobile component 10.
    The invention is well suited for optimum mounting for small dimensions (clean insertion, limitation of burr and deformation). The figures illustrate the non-limiting case where the second element 2 is a board, which cooperates with a tube constituting the third element 3. The pre-assembly of the board on the tube is carried out by successively carrying out the operations according to Figures 6 and 7 , in this order. FIG. 6 represents the pre-assembly of the second element 2 with the third element 3, in friction bearing. Depending on the geometries retained for the second bearing 25 and the third bearing 30, this friction can be adjustable according to the value of the relative axial engagement between the second element 2 and the third element 3. FIG. 7 represents the end of the assembly. of this mobile component, with an ascending axial arrow showing the mounting of the sub-assembly, consisting of the second element 2 and the third element 3, on the journal 11 of the first element 1. Depending on the geometries retained for the fourth bearing 35 and the first bearing 15, it is possible or not to have secondary friction between the first element 1 and the third element 3.
    In the particular and non-limiting case illustrated by the figures:the third element 3 comprises a progressive insertion cone with a first slope of engagement 36 of half-angle at the top comprised between 25 ° and 40 °, and a second slope 37, and / or a conical bearing surface 39 with a last slope half-angle engagement at the apex comprised between 10 ° and 25 °;the tightening between the second element 2 (in particular a board) and the third element 3 (in particular a tube) is within a range of 0.04 - 0.10 mm for a functional torque range of 0.10 - 0.50 N.cm.in addition to a more stable friction, the flexible arms 27 make it possible to minimize the deformation in the plane perpendicular to the axis D (radial flapping);the tightening of the third element 3 (in particular a steel tube) on the journal 11 of the first element 1 (in particular a steel shaft) has a minimum value of 0.002 mm to ensure axial and torque resistance. If this resistance (axial and / or in torque) is insufficient, welding between them is possible, in particular by laser pointing, or the like;in a particular variant, the second element 2 and the third element 3 are made of steel;the choice of a third element 3 made of steel is advantageous for reasons of resistance to a steel journal 11, and also to limit its deformation when driving in a (swelling of the component would have a direct influence on the friction since in contact with the second element 2).the choice of a second element 2 cut, or stamped, or the like, in steel makes it possible to obtain advantageous mechanical characteristics for this type of friction application;in a variant with two contact points, the second element 2 is advantageously symmetrical to allow maximum active length of the flexible arms. It is advantageous to provide safeguards for the material walls in the (radial) side of at least 0.15 mm; this is well compatible with the manufacturing constraints during cutting / stamping and during cutting of the teeth if necessary.
    In short, in a clockwork setting mechanism, it is generally difficult to manage the control of a friction, in particular for small dimensions (in terms of size, and thickness in particular), the control of a friction is difficult to manage, especially because of the deformations. The invention provides a good response to this management of friction thanks to the addition, between the two components between which it is necessary to perform a relative adjustment (the first element 1 and the second element 2), of an intermediate component, here the third element 3, which can be produced at low cost, for example in the form of a necked part. The functional friction diameter can easily be adapted, or even allow parts to be paired.
    The choice of a variant with an insertion angle, at an insertion surface 36 on the third element 3 simplifies the mounting of the second element 2, in particular of a board, on this third element 3 , with more gradual insertion, reduced deformation, and less risk of burrs, the functional diameter remaining unaltered, while ensuring axial retention of the second element 2 after assembly.
    In another embodiment, corresponding to Figures 4 or 5, a third bearing surface 30 with a conical functional surface allows fine adjustment of the friction, with a variable friction value depending on the height of the hunt.
    In short, the invention allows correct management of the friction: low dispersion, possibility of pairing and fine adjustment; adjustable friction depending on the variant.
    权利要求:
    Claims (22)
    [1]
    1. Movable timepiece component (10) with an element held by friction, comprising a first element (1) comprising a first bearing surface (15) around an axis (D), and a second element (2) comprising a second bearing surface (25) around said axis (D), where said second bearing surface (25) of said second element (2) cooperates by friction with a third bearing surface (30) which comprises, around said axis (D), a third element (3) interposed between said first element (1) and said second element (2), which said third element (3) comprises a fourth bearing surface (35) which cooperates by friction with said first bearing surface (15) or which is fixed on said first bearing surface (15) ), and where the minimum bearing diameter, relative to said axis (D), of said third bearing surface (30) is at least double the maximum bearing diameter of said fourth bearing surface (35), characterized in that said fourth bearing surface (35) bearing (35) and said first bearing (15) are cylindrical about said axis (D).
    [2]
    2. Mobile component (10) according to claim 1, characterized in that said fourth bearing (35) cooperates by friction with said first bearing (15).
    [3]
    3. Movable component (10) according to claim 2, characterized in that the friction torque between said fourth bearing (35) and said first bearing (15) is greater than the friction torque between said second bearing (25) and said third scope (30).
    [4]
    4. Mobile component (10) according to claim 1, characterized in that said fourth bearing (35) is driven out of said first bearing (15).
    [5]
    5. Mobile component (10) according to claim 4, characterized in that said fourth bearing (35) is stopped on said first bearing (15) by at least one weld point.
    [6]
    6. Movable component (10) according to one of claims 1 to 5, characterized in that said first element (1) comprises a first abutment bearing surface (12) arranged to cooperate in axial abutment bearing, according to the direction of said axis (D), with a second abutment bearing surface (21) which said second element (2) comprises.
    [7]
    7. Mobile component (10) according to one of claims 1 to 6, characterized in that said first element (1) comprises an internal stop bearing surface (13) arranged to cooperate in axial stop support, according to the direction of said axis (D), with a complementary interior abutment bearing surface (31) which said third element (3) comprises.
    [8]
    8. Mobile component (10) according to one of claims 1 to 7, characterized in that said third element (3) comprises an outer abutment bearing surface (32) arranged to cooperate with a complementary outer bearing surface. stopper (23) that said second element comprises to limit their relative axial travel in the direction of said axis (D).
    [9]
    9. Mobile component (10) according to one of claims 1 to 8, characterized in that said first element (1) comprises at least first drive means (19), and / or in that said second element ( 2) comprises at least second drive means (29).
    [10]
    10. Mobile component (10) according to one of claims 1 to 9, characterized in that said second element (2) comprises a main recess (20) delimiting at least two bearing surfaces (201; 202) each comprising a or two support sectors belonging to said second bearing surface (25).
    [11]
    11. Mobile component (10) according to claim 10, characterized in that said main recess (20) defines two bearing surfaces (201; 202) each comprising two bearing sectors belonging to said second bearing surface (25), and in that said main recess (20) is cleared between said support sectors, for a support limited to four points between said first element (1) and said second element (2).
    [12]
    12. Mobile component (10) according to claim 10 or 11, characterized in that said second element (2) exerts friction on said third element (3) by flexible arms (27) arranged between said main recess (20) and secondary recesses (28).
    [13]
    13. Mobile component (10) according to one of claims 1 to 12, characterized in that said third element (3) comprises at least one insertion surface (36, 37, 38, 39) conical or spherical for its insertion. on said first element (1) or in said second element (2).
    [14]
    14. Mobile component (10) according to one of claims 1 to 13, characterized in that the geometric support of said second bearing surface (25) is cylindrical about an axis parallel to said axis (D) and distant from said axis (D). ).
    [15]
    15. Mobile component (10) according to one of claims 1 to 13, characterized in that the geometric support of said second bearing surface (25) is conical about an axis parallel to said axis (D) and distant from said axis (D). ).
    [16]
    16. Mobile component (10) according to one of claims 1 to 15, characterized in that the geometric support of said third bearing surface (30) is of revolution about said axis (D).
    [17]
    17. Mobile component (10) according to claim 16, characterized in that the geometric support of said third bearing surface (30) is cylindrical about said axis (D).
    [18]
    18. Mobile component (10) according to claim 16, characterized in that the geometric support of said third bearing surface (30) is conical about said axis (D).
    [19]
    19. Movable component (10) according to claims 8 and 18, characterized in that the space between said outer abutment bearing surface (32) and said complementary outer abutment bearing surface (23) is arranged to allow the introduction of a thickness gauge to adjust the value of the clamping between said third element (3) and said second element (2) and therefore the value of the friction exerted by said second element (2) on said third element ( 3).
    [20]
    20. Adjustable display mechanism (50), comprising at least one movable component (10) according to one of claims 1 to 19.
    [21]
    21. Timepiece movement (100) comprising at least one such adjustable display mechanism (50) according to claim 20, and / or at least one movable component (10) according to one of claims 1 to 19.
    [22]
    22. Timepiece (1000) comprising at least one timepiece movement (100) according to claim 21, and / or at least one adjustable display mechanism (50) according to claim 20, and / or at least one mobile component (10) according to one of claims 1 to 19.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2824361B1|2018-07-18|Dual mass flywheel with improved damping means
    EP1911985B1|2009-12-09|Assembly of a rolling device on an angle transmission yoke, control system of a synchronising ring with variable setting comprising it, and aircraft engine equipped with same
    EP1705533A1|2006-09-27|Assembly of a mechanical part onto an axle
    EP1586960A1|2005-10-19|Crown for a watch with a disconnecting mechanism
    EP3158402B1|2018-08-22|Timepiece wheel
    EP2290477A1|2011-03-02|Assembly for fixing the peripheral end of the hairspring of a device with balance wheel-hairspring for a timepiece
    CH704640B1|2012-09-28|pivot member.
    EP1923754B1|2009-10-14|Timepiece movement equipped with a display module
    EP2936253B1|2017-11-29|Clock barrel
    CH705087B1|2017-02-28|Clockwork.
    EP3825779A1|2021-05-26|Timepiece mobile component with element supported by friction
    CH701075B1|2010-11-30|Cannon-pinion wheel and arbor assembly for clock movement, has wheel whose hub is connected to felloe to form rigid, monolithic and effectively non-deformable assembly, and pad with surface provided in contact with periphery of arbor
    CH716859A2|2021-05-31|Movable clockwork component with an element held by friction.
    CH698675B1|2009-09-30|Impact-absorbing bearing for mechanical watch, has spring plates prestressed so as to exert torque for maintaining mobile unit against stop units i.e. studs, on mobile unit, where mobile unit is constituted of jewel enclosed by central part
    EP1882864A1|2008-01-30|Clutch releasebearing mounting containing a retaining ring for the device applying the self-alignment force
    FR3009598A1|2015-02-13|CRAFT SPEED CONTROL FOR A VEHICLE GEARBOX
    CH703961B1|2015-10-15|A method of assembling a piece of hard material on an axis and assembly comprising such a part assembled on a shaft.
    EP3805871A1|2021-04-14|Adjustable threaded crown
    EP3889459A1|2021-10-06|Friction disc for vibration damper
    WO2007125265A1|2007-11-08|Clutch bearing
    CH716957A2|2021-06-30|Guidance device for clock display.
    EP3899317A1|2021-10-27|Torque transmission device with springs in series and torque transmission system comprising such a device
    CH716661A1|2021-04-15|Watch movement.
    FR3092153A1|2020-07-31|Torque transmission device with springs in series and torque transmission system comprising such a device
    FR3090776A1|2020-06-26|Torque transmission device with springs in series and torque transmission system comprising such a device
    同族专利:
    公开号 | 公开日
    CH716826A2|2021-05-31|
    CH716860A2|2021-05-31|
    CH716858A2|2021-05-31|
    CH716861A2|2021-05-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01473/19A|CH716826A2|2019-11-21|2019-11-21|Movable clockwork component with an element held by friction.|
    [返回顶部]