A device for maintaining or limiting the vibration of timekeeping components

A compact, reversible mechanism using a rotating bolt with elastic return means and angle banking effectively limits axial and radial vibrations in timer components, addressing the limitations of existing solutions and ensuring reliable performance and ease of maintenance.

JP7656081B2Active Publication Date: 2025-04-02ETA SA MFG HORLOGERE SUISSE
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Patent Information

Application Number
JP2023567019
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-05-04
Filing Date
2022-05-02
Publication Date
2025-04-02
Estimated Expiration
2042-05-02

AI Technical Summary

Technical Problem

Existing solutions for limiting vibrations in timer components are either too large, visually obstructive, or ineffective at resisting impact, making them unsuitable for reliable use in watchmaking and clock mechanisms.

Method used

A compact, reversible mechanism using a rotating bolt with an elastic return means and angle banking features to securely hold timer components in place, limiting both axial and radial vibrations while allowing for easy assembly and disassembly.

Benefits of technology

The mechanism effectively limits vibrations and provides resistance to impact, ensuring accurate timekeeping and ease of maintenance, while maintaining a compact and visually unobtrusive design.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

One aspect of the invention relates to a device (100) for maintaining or limiting the oscillations of a timepiece component (30) in at least one direction, said device comprising a stationary structure (20) arranged to receive in abutment at least one surface of said component (30), and a rotating bolt (10) cooperating with said stationary structure (20), said rotating bolt (10) being rotatable about an axial direction (A) between a first angular position, called unlocked position, allowing freedom of movement of said component (30), and a second angular position, called locked position, limiting the movement of said component (30) relative to said stationary structure (20) in said at least one direction, said second angular position, called locked position, of said rotating bolt (10) being fixed by elastic return means (3).
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Description

[Technical field]

[0001] The present invention relates to a device for maintaining or limiting vibration of a timepiece component.

[0002] The invention further relates to a timepiece movement equipped with at least one such device for maintaining or limiting oscillations.

[0003] The invention further relates to a timepiece, in particular a watch, equipped with at least one such device for maintaining or limiting oscillations.

[0004] The present invention relates to the field of timepiece mechanisms, in particular to means for limiting vibrations and for holding them in a clamped position, designed for setting operations carried out as part of the initial factory setting operation or after-sales service. [Background technology]

[0005] Setting the vibrations (or clearances) of timepiece components is always difficult. The reason for this is that very low vibration values ​​(or functional play) are as large as the dimensional manufacturing tolerances or even as large as the geometric tolerances. The problem is even more complicated when considering thermal stresses, for example in a watch case that must operate between -15°C and +40°C. This has to be addressed both during the initial factory setting operations when the timepiece is first produced and during after-sales maintenance operations throughout its useful life. In particular it is also preferable that some settings are reversible.

[0006] Various means are used by watchmakers to limit the axial vibrations of components, such as cover plates, plates with eccentric holes, eccentrics, in particular groups of eccentric bolts around the component, keys, snap rings, step screws or other limiting elements.

[0007] These solutions are generally deficient due to their large overall dimensions, the fact that they visually obstruct components that must remain visible to the user, or due to the build-up of vibrations. Resistance to shocks still often leaves much to be desired. Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to provide the watchmaker with a simple, reliable, space-saving and reversible mechanism for limiting axial and / or radial vibrations of a component.

[0009] In one particular embodiment, the mechanism is still able to ensure that the component is held in place and blocks axial and / or radial movement of the component.

[0010] "Axial" and "radial" are of course defined relative to a given component whose movement is to be restricted, in particular relative to the main axes of the timepiece movement. [Means for solving the problem]

[0011] The invention more particularly relates to a device for maintaining or limiting axial and / or radial vibrations of a timepiece component according to claim 1.

[0012] In addition to the features mentioned in the previous paragraph, the device according to the invention may have one or more complementary features from the following, taken on an individual basis or according to any combination that is technically possible: - said second angular position of the rotating bolt, called the locked position, is a single position and is defined and specified by an elevated portion provided by said structure, said elevated portion being arranged to cooperate with a boss provided by said rotating bolt, the cooperation between the boss and the elevated portion allowing the definition of a stable and firm position of said rotating bolt without any action from the user on said rotating bolt. - The structure has at least one angular banking so as to limit the angular movement of said rotating bolt in at least one direction. the structure comprises at least one axial banking arranged to limit the axial movement of said rotating bolt in the axial direction A in at least one direction; - the device for maintaining or limiting vibrations is a device for maintaining or limiting vibrations in an axial direction A, and the rotating bolt is arranged to limit axial movement of the component in the axial direction A relative to the stationary structure when the rotating bolt is in the second angular position, referred to as the locked position. - the rotating bolt comprises at least one pad arranged to form any axial banking in said axial direction A when said rotating bolt is in said second angular lock position with respect to said component captured and held between said structure and said rotating bolt for limiting axial vibration of said component in said axial direction A, or a first jaw for clamping and holding one of said components in cooperation with said structure forming a second jaw opposite to said first jaw for axially blocking the component in said axial direction A. the device for maintaining or limiting vibrations is a device for maintaining or limiting radial vibrations in a second radial direction perpendicular to the axial direction A and is arranged to limit movement of said component relative to said stationary structure in the second radial direction when the rotating bolt is in said second angular position, referred to as the locked position. the rotating bolt comprises at least one pad arranged to form a radial banking for limiting radial vibrations of said component or for radially blocking said component in a second radial direction perpendicular to the first axial direction A, in cooperation with said stationary structure or with a second diametrically opposed device for maintaining or limiting vibrations, when said rotating bolt is in said second angular locking position. the boss is held by at least one spring arm which is provided by or forms said elastic return means; the boss has a pin arranged to follow said raised portion; the bosses are provided with holes forming gripping members for handling by the watchmaker or by automated manufacturing means; the raised portion comprises at least one projection oriented towards the axis of rotation of said rotating bolt and at least one cavity further away from the axis of rotation of said rotating bolt than said projection, said cavity cooperating with said boss to form a notch for stabilising said rotating bolt. the rotating bolt has the aforementioned elastic return means; the rotating bolt comprises at least one gripping member arranged to be handled by the watchmaker or by automated timepiece-making means so as to control the rotation of said rotating bolt between a first angular position, referred to as an unlocked position, and a second angular position, referred to as a locked position, and so as to lock and / or unlock said components arranged between said structure and said rotating bolt. the gripping member is spaced from a boss provided on said rotating bolt, said gripping member being held by an arm which is stiffer than said elastic return means; a gripping member is rigidly connected to a boss provided on said rotating bolt, said gripping member being held by said elastic return means; the elastic return means comprises a plurality of strip spring segments in the form of arcs connected end to end and connected in pairs by loops; said rotating bolt being substantially flat and perpendicular to its axis of rotation; the cooperation between said boss and said raised portion is essentially planar in a plane perpendicular to said axis of rotation of said rotating bolt, and said elastic return means is deformable in an essentially planar manner. - the cooperation between said boss and said raised portion is essentially non-planar, said raised portion comprising successive zones of different heights relative to a plane perpendicular to the axis of rotation of said rotating bolt and forming at least one notch which retains a front face of said boss and thereby stabilizes said rotating bolt; and said elastic return means is deformable in three-dimensional space. the rotating bolt is made in one piece and said elastic return means is integrated into said rotating bolt;

[0013] The invention further relates to a system for holding mutually concentric components of a timepiece movement, comprising at least one such device for maintaining or limiting vibrations, forming first means for maintaining or limiting vibrations of a first component, and second means for maintaining or limiting vibrations of a second component concentric with the first component.

[0014] Advantageously, the second means for maintaining or limiting vibrations are configured to block or limit vibrations or axial play of the second component in the axial direction A and / or radially in a plane perpendicular to the axial direction A.

[0015] Advantageously, the second means for maintaining or limiting vibrations is a banking or eccentrically rotating bolt, making it possible to limit the axial play of the second component in the axial direction A and / or in the radial direction in a plane perpendicular to the axial direction A, or to hold the second component axially in the axial direction A and / or in the radial direction in a plane perpendicular to the axial direction A.

[0016] The invention further relates to a timepiece movement equipped with at least one such device for maintaining or limiting vibrations or one such system for holding concentric components.

[0017] The invention further relates to a timepiece, in particular a clock, equipped with at least one such device for maintaining or limiting vibrations or one such system for holding concentric components.

[0018] The objects, advantages and features will be better understood from reading the following detailed description, given in conjunction with the accompanying drawings. [Brief description of the drawings]

[0019] [Figure 1] FIG. 2 is a diagrammatic representation of a plan view of an exemplary embodiment of a device for maintaining or limiting vibrations according to the present invention in a holding position configured to hold a component axially and radially contained between a lower structure and a pad forming portion of a rotary bolt; [Diagram 2] FIG. 2 is a view similar to FIG. 1 showing the same exemplary embodiment of the device for maintaining or limiting vibrations according to the present invention, in which the rotating bolt can be seen to have a boss at the end of the spring arm that cooperates with a raised portion provided by the stationary structure to fix the rotating bolt in an angular clamping position, and a rigid arm separate from the spring arm can be used to manipulate the rotating bolt. [Diagram 3]FIG. 13 illustrates an alternative embodiment of a device for maintaining or limiting vibration according to the present invention, with the rotating bolt in an unlocked position, which allows components to be inserted or withdrawn, and with the rotating bolt free to rotate. [Figure 4] FIG. 4 illustrates a locked position of the rotating bolt of the device for maintaining or limiting vibration shown in FIG. 3, which prevents the components from being inserted or withdrawn, and in which the rotating bolt is stressed in a counterclockwise direction by banking. [Diagram 5] FIG. 1 shows a diagrammatic plan view of a clock movement including a number of devices for maintaining or limiting vibrations according to the invention, which devices are configured to fix a component centered on the main axis of the movement, in this case a central disc, while an intermediate disc, of larger diameter, is held by an eccentric forming a second means for maintaining or limiting vibrations. [Figure 6] FIG. 2 illustrates an alternative embodiment of a device for maintaining or limiting vibrations according to the present invention, in which the elevated portion of the stationary structure comprises two bosses surrounding a recess defining a clamping notch. [Figure 7] FIG. 13 is a simplified side view of an exemplary embodiment of a rotational support with a non-flat, deformable spring in cooperation with the left profile. [Figure 8] FIG. 13 is a simplified side view of an exemplary embodiment of a rotational support with a non-flat, deformable spring in cooperation with the left profile. [Figure 9] FIG. 4 is a diagram similar to FIG. 3 showing a second exemplary embodiment of a device for maintaining or limiting vibration according to the present invention in an unlocked position, in which the rotating bolt comprises an S-shaped spring arm having a boss at its distal end, and also a hole used to operate the rotating bolt, and another additional boss forming a beak at the distal end of the spring is an axial safety device to limit any axial displacement during impact or handling. [Figure 10] FIG. 5 is a view similar to FIG. 4 showing a second exemplary embodiment of a device for maintaining or limiting vibration according to the present invention in a locked position, in which the rotating bolt comprises an S-shaped spring arm having a boss at its distal end, and also a hole used to operate the rotating bolt, and another additional boss forming a beak at the distal end of the spring is an axial safety device to limit any axial displacement during impact or handling. [Figure 11] FIG. 1 is a block diagram showing a timer equipped with a device for maintaining or limiting vibrations according to the invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The present invention relates to a device 100 for maintaining or limiting axial and / or radial vibrations of a timepiece component 30 .

[0021] The device 100 for maintaining or limiting this vibration comprises a stationary structure 20 arranged to receive in abutment at least one surface of the component 30. The stationary structure 20 cooperates with a rotating bolt 10 which is rotatable about an axial direction A. The rotating bolt 10 is configured to allow freedom of movement of the component 30 when the rotating bolt 10 is in a first angular position, referred to as the unlocked position, and to maintain or limit vibration of the component 30 in at least one direction when the rotating bolt 10 is in a second angular position, referred to as the locked position.

[0022] The device 100 for maintaining or limiting such vibrations can be used to limit vibrations of the component 30 in one or more directions, for example, axial and / or radial.

[0023] In one exemplary embodiment described in particular with reference to Figures 1 to 4, the rotating bolt 10 is particularly arranged to limit axial movement of the component 30 relative to the stationary structure 20 in the axial direction A when the rotating bolt 10 is in a second angular position, referred to as the locked position.

[0024] According to the invention, when the rotary bolt 10 is in this second angular position, called locked position, it occupies a specific angular position relative to the stationary structure 20 and blocks or limits the axial vibrations of the component 30. This second angular position of the rotary bolt 10 is fixed by the action of the elastic return means 3. In an advantageous alternative embodiment, these elastic return means 3 are integrated in the rotary bolt 10.

[0025] More specifically, but not exclusively, the second angular position of the rotating bolt 10 for blocking or limiting axial vibration of the component 30 is a single position or is formed by a set of multiple angular positions of the rotating bolt 10 over a given angular sector.

[0026] Advantageously, the second angular position of the rotating bolt 10 for blocking or limiting axial vibrations of the component 30 is a single position and is defined and indicated by a raised portion 25 provided by the structure 20. This raised portion 25 is arranged to cooperate with a boss 4 provided by the rotating bolt 10, the cooperation between the boss 4 and the raised portion 25 allowing a stable and fixed position of the rotating bolt 10 to be defined without any action from the user on the rotating bolt 10.

[0027] The elastic return means 3 defines a blocking torque, the particular value of which is configured to hold the rotating bolt 10 in a position, thus fixing the component 30, even in the event that an inadvertent movement is imparted to the timepiece 2000 incorporating the device 100, for example if the watch is dropped.

[0028] Only a torque optionally applied by the watchmaker during the initial setting operation or during after-sales operations, or even by manufacturing means such as a torque-calibrated robotic manipulator, can exceed the blocking torque generated by the elastic return means 3 and disengage the rotating bolt 10 from its locked position in order to place it in the unlocked position and thus allow the component 30 to be fully released and removed.

[0029] More specifically, the structure 20 includes at least one angular banking 24 positioned to limit the angular movement of the rotating bolt 10 in at least one direction.

[0030] More specifically, the structure 20 includes at least one axial banking 21 arranged to limit axial movement of the rotating bolt 10 in the axial direction A in at least one direction to prevent excessive angular displacement of the rotating bolt 10, for example in the event of an impact.

[0031] The rotating bolt 10 comprises at least one pad 1 arranged to form an axial banking in the axial direction A when the rotating bolt 10 is in a second angular position, referred to as the locked position, with the component 30 held captive between the structure 20 and the rotating bolt 10 so as to limit axial vibrations of the component 30.

[0032] The pad 1 can also be arranged to form a first jaw for holding the component 30 by clamping, and in cooperation with the structure 20 forms a second jaw opposite the first jaw for axially blocking the component 30.

[0033] More specifically, the boss 4 is carried by at least one spring arm which is provided by or which forms the elastic return means 3. Even more specifically, this spring arm is formed by a single elastic strip having the boss 4 at its end.

[0034] More specifically, the rotating bolt 10 comprises at least one gripping member 2 arranged to be handled by a watchmaker or by automated timepiece manufacturing means so as to control the rotation of the rotating bolt 10 between a first angular position, referred to as the unlocked position, and a second angular position, referred to as the locked position, and to lock and / or unlock a component 30 arranged between the structure 20 and the rotating bolt 10, more specifically above the structure 20 and below the rotating bolt 10.

[0035] In the alternative embodiment shown in figures 1 to 4, the gripping member 2 is separated from the boss 4 and is held by an arm which is stiffer than the elastic return means 3 provided on the rotating bolt 10.

[0036] In another alternative embodiment shown in FIGS. 9 and 10, the gripping member 2 is rigidly connected to the boss 4 and is held by a resilient return means 3 .

[0037] More specifically, as shown in the alternative embodiment shown in Figures 9 and 10, the boss 4 has a hole 204 forming such a gripping member 2 for its manipulation by the watchmaker or by automated manufacturing means.

[0038] More specifically, the boss 4 may have a pin (not shown) arranged to follow the raised portion 25 .

[0039] More specifically, the boss 4 includes a substantially semi-cylindrical outer peripheral part 2530 .

[0040] More specifically, the raised portion 25 has at least one protrusion 252 directed towards the axis of rotation of the rotating bolt 10 and at least one cavity 251, 253 further away from the axis of rotation of the rotating bolt 10 than the protrusion 252, whereby the cavity 251, 253 forms a notch for stabilizing the rotating bolt 10, the cavity 253 advantageously having a shape complementary to the peripheral part 2530 of the boss 4.

[0041] 9 and 10, the structure 20 forms a cap that axially covers a part of the boss 4 (by means of the projection 252 and at least one flank specifically defined by the cavity 251) when the peripheral part 2530 of the boss 4 is in contact with the cavity 253. The elimination of the cavity 251 ensures access to the hole 204 for handling the gripping member 2, if the boss 4 is provided with such a hole.

[0042] 9 and 10, the elastic return means 3 may comprise a number of strip spring segments 31, 32 in the form of circular arcs connected end to end and connected in pairs by loops. More specifically, the arcs are coaxial and all centred on the axis of rotation of the rotating bolt 10.

[0043] More specifically, the rotating bolt 10 is substantially flat and perpendicular to its axis of rotation.

[0044] More specifically, as can be seen for example in the alternative embodiment shown in Figures 1 to 4, the cooperation between the boss 4 and the raised portion 25 is essentially planar in a plane perpendicular to the axis of rotation of the rotating bolt 10, and the elastic return means 3 is deformable in an essentially planar manner.

[0045] In another alternative embodiment, for example the embodiment shown in Figure 7 or Figure 8, the cooperation between the boss 4 and the raised portion 25 is essentially non-planar, the raised portion 25 having successive zones 26, 27, 28 of various heights relative to a plane perpendicular to the axis of rotation of the rotating bolt 10 and forming at least one notch that stabilizes the rotating bolt 10 by retaining the front face 47 of the boss 4, and the elastic return means 3 is deformable in three-dimensional space.

[0046] In an advantageous embodiment, the rotating bolt 10 is formed in one piece.

[0047] It will be appreciated that the principle is to use the action of the rotating bolt 10 to limit vibration of the component 30 or to ensure that the component 30 is held in place, by moving the vibration limiting part formed by the pad 1 and the gripping member 2 forming the actuating part away from the centre of rotation of the rotating bolt 10.

[0048] In this way, the rotating bolt 10 is handled in an accessible area of ​​the movement, whilst ensuring that, if necessary, inaccessible components are covered as desired when the bolt is retracted.

[0049] Thus, when the rotating bolt 10 is pivoted about its axis of rotation by the gripping member 2, the other part of the bolt formed by the pad 1 covers the component 30 to be held, thereby limiting or blocking its axial displacement (vibration, shock).

[0050] Advantageously, the pad 1 of the rotating bolt 10 covering the component 30 to be held is itself covered by an axial banking 21 rigidly connected to the stationary structure 20, in particular to the blank, to prevent excessive angular movement of the rotating bolt 10, for example in the event of an impact.

[0051] The elastic return means 3 of the rotating bolt 10 ensures that the rotating bolt 10 is held in its angular locked position.

[0052] In an alternative embodiment, the elastic return means 3 of the rotating bolt 10 may also help ensure that the rotating bolt 10 is retained in its angular unlocked position.

[0053] The positioning of the rotating bolt 10 and its retention in a fixed position is not maintained by friction on pivoting (which is the customary case for bolts or eccentrics), but by the effect of the elastic return means 3 which urges the rotating bolt 10 towards at least one preferred position. In this case, the elastic return means 3 presses the gripping member 2 against a rigid banking 24 of the stationary structure 20 by the spring effect of the elastic return means 3. This arrangement is particularly illustrated in the alternative embodiment shown in figures 1 to 4.

[0054] To return to the unlocked position, the force linked to the compression of the elastic return means 3 during the movement of the boss 4 over the raised portion 25, in particular the protrusion 252, etc., is as shown in the figure: The presence of at least one lug 252 makes it possible to ensure the locked position of the rotating bolt 10, in particular in the event of any shock that may occur during the service life of the movement.

[0055] Such raised portion of the stationary structure 20 can also be formed to cooperate with the boss 4 of the elastic return means 3 when the bolt is in its angular unlocked position, in particular to indicate and fix those two angular locked and unlocked positions, thereby ensuring that the rotating bolt 10 is accurately positioned.

[0056] The accommodation of the raising and displacement of the boss 4 at the end of the elastic return means 3 on the projection 252 of the raised portion 25 makes it possible to add a notch effect, which is perceived by the watchmaker during each handling operation (locking / unlocking, unlocking / locking), thus ensuring the open (unlocked position) or closed (locked position) position of the rotating bolt 10.

[0057] It is important to mention that when the rotating bolt 10 is in the locked position, the elastic return means 3 does not need to be tensioned.

[0058] More specifically, if there is play and, despite this, the rotary bolt 10 performs its function of axially limiting a component 30, for example a central disc, in a plane, the system will operate just the same, with the raised portion 25 arranged between the locked and unlocked positions always ensuring the position and the retention of the rotary bolt in one of its end positions and the effect of the notch when passing from these two end positions to another.

[0059] The elastic return means 3 of the rotary bolt 10 can take the form of several alternative embodiments. Strip springs which act in height instead of in a plane, as shown in figures 7 and 8. - a strip spring cooperating with a negative lug formed by a cavity 253 bounded by two projections 252, which locks the position of the boss 4 by a geometric effect. An actual block is formed, as shown in FIG. 6.

[0060] To release the rotating bolt 10 from its locked position, the watchmaker would need to manually retract the spring, which requires access to it, which has the advantage that the closed position of the spring is guaranteed even with very significant external forces.

[0061] The device 100 for maintaining or limiting axial vibrations in accordance with the present invention has been described primarily for maintaining or limiting axial vibrations of the component 30. However, the device 100 in accordance with the present invention may also be configured to maintain or limit radial vibrations of the component 30 in addition to or instead of maintaining or limiting axial vibrations.

[0062] As shown in more detail with reference to Figures 1, 2 and 7, a portion 12 of the rotary bolt 10 with a pad 1 is configured to indirectly face and be adjacent to or even contact an outer peripheral portion 33 (shown in Figures 1, 2 and 7) of the component 30 when the rotary bolt 10 is in the locked position, thereby blocking or limiting radial movement of the component 30 in a plane perpendicular to the axial direction A.

[0063] Preferably, at least two devices 100 are arranged in an opposite manner with respect to the central axis of the timepiece movement 1000 to block radial movement of the component 30 in two directions or to limit radial vibration of the component 30.

[0064] However, the pad 1 may cooperate with a portion of the stationary structure 20 to block or limit radial movement of the component 30 in a plane perpendicular to the axial direction A.

[0065] Thus, the pad 1 also forms a radial banking capable of blocking or limiting radial vibrations of the component 30 in a plane perpendicular to the axial direction A.

[0066] Thus, the device 100 of the present invention enables the timepiece component 30 to be held axially and / or radially and / or its axial and / or radial vibrations to be limited within the timepiece movement 1000.

[0067] Advantageously, a number of devices 100 according to the invention are arranged around the component 30, preferably in a circumferential arrangement around the component 30.

[0068] The invention further relates to a system 500 for holding concentric timepiece components 30, 60 of a timepiece movement 1000, comprising at least one such device 100 for maintaining or limiting vibrations, forming first means for maintaining or limiting vibrations of the first component 30, and second means 50 for maintaining or limiting vibrations of a second component 60 concentric with the first component.

[0069] More specifically, the second means for maintaining or limiting vibrations 50 are configured to block or limit vibrations or axial play in the axial direction A and / or radially in a plane perpendicular to the axial direction A. The second means for maintaining or limiting vibrations 50 are for example banking or eccentric bolts that make it possible to limit the axial and / or radial play of the second component 60 or to hold the second component 60 axially and / or radially.

[0070] Figure 5 thus shows the retention of a first component, in this case a central disc 30, centred on the main axis of the movement, by a number of rotating bolts 10 according to the invention, showing that access to the gripping members 2, specifically the control arms, is facilitated through a radial peripheral window. The second component, an intermediate disc 60 of larger outer diameter DE, is retained by an eccentric 50. The retention of the central disc 30 and the intermediate disc 60, as well as the angular displacement of the limiting arms, all occur within a circular zone of maximum access diameter DM, which is smaller than the maximum diameter of the blank 20, being two-thirds as large, allowing other mechanisms to be installed around the periphery. The invention thus provides a secure retention whilst giving a very compact architecture.

[0071] The invention further relates to a timepiece movement 1000 equipped with at least one such device 100 for maintaining or limiting vibrations.

[0072] The invention further relates to a timepiece 2000, in particular a watch, equipped with at least one such device 100 for maintaining or limiting vibrations.

[0073] In summary, the present invention enables: - Axial locking of components in a movement, despite no or limited access to the components. -Axial independence of concentric and coaxial wheel sets, discs, etc. - Better vibration retention and resistance to shocks are expected. - Simplified assembly, disassembly and reassembly of the wheelset, especially in the case of the central disc (total access from the dial side without the need for further disassembly). -Blocking of the bolt in any position (closed or open) caused by the upward force of the spring on the lug. - The open or closed position of the bolt is guaranteed (avoiding any intermediate positions) thanks to the notching effect caused by the lifting of the spring on the lug as the bolt is rotated.

[0074] A very simple embodiment can be achieved with a single pin 29 which guides the rotation of the rotating bolt 10 .

Claims

1. 1. A device (100) for maintaining or limiting the vibration of a timepiece component (30) in at least one direction, said device comprising a stationary structure (20) arranged to receive in abutment at least one surface of said component (30), and a rotating bolt (10) cooperating with said stationary structure (20), said rotating bolt (10) being rotatable about an axial direction (A) between a first angular position, referred to as an unlocked position, allowing freedom of movement of said component (30), and a second angular position, referred to as a locked position, limiting the movement of said component (30) relative to said stationary structure (20) in said at least one direction, said rotating bolt (10) being configured such that when in said second angular position, referred to as the locked position, said rotating bolt (10) is fixed in rotation by elastic return means (3) and when in said first angular position, referred to as the unlocked position, said rotating bolt (10) is freely rotatable without receiving a force from said elastic return means (3).

2. A device (100) for maintaining or limiting vibration in at least one direction of a timepiece component (30), said device comprising a stationary structure (20) arranged to receive in abutment at least one surface of said component (30), and a rotating bolt (10) cooperating with said stationary structure (20), said rotating bolt (10) being rotatable about an axial direction (A) between a first angular position, called an unlocked position, allowing freedom of movement of said component (30), and a second angular position, called a locked position, limiting movement of said component (30) relative to said stationary structure (20) in said at least one direction, ...) relative to said stationary structure (20) in said at least one direction, A device (100) for maintaining or limiting vibrations, characterized in that the second angular position, called the locked position, of a rotating bolt (10) is fixed by elastic return means (3), and that the second angular position, called the locked position, of the rotating bolt (10) is a single position and is defined and specified by a raised portion (25) comprised by the structure (20), the raised portion (25) being arranged to cooperate with a boss (4) comprised by the rotating bolt (10), the cooperation between the boss (4) and the raised portion (25) allowing the definition of a stable and firm position of the rotating bolt (10) without any action from a user on the rotating bolt (10).

3. 3. A device (100) for maintaining or limiting vibrations as claimed in claim 1 or 2, characterized in that the structure (20) comprises at least one angular banking (24) for limiting the angular movement of the rotating bolt (10) in at least one direction.

4. 3. A device (100) for maintaining or limiting vibrations as claimed in claim 1 or 2, characterized in that the structure (20) comprises at least one axial banking (21) so as to limit the axial movement of the rotating bolt (10) in the axial direction (A) in at least one direction.

5. 3. A device (100) for maintaining or limiting vibrations as described in claim 1 or 2, characterized in that the device (100) for maintaining or limiting vibrations is a device for maintaining or limiting vibrations in the axial direction (A) and that the rotating bolt (10) is arranged to limit the axial movement of the component (30) in the axial direction (A) relative to the stationary structure (20) when the rotating bolt (10) is in the second angular position, referred to as the locked position.

6. 3. The device for maintaining or limiting vibrations (100) according to claim 1 or 2, characterized in that the rotary bolt (10) comprises at least one pad (1) arranged to form, when the rotary bolt (10) is in the second angular position, either an axial banking with respect to the component (30) captured and held between the structure (20) and the rotary bolt (10) for limiting axial vibrations of the component (30) in the axial direction (A), or a first jaw for clamping and holding one of the components (30) in cooperation with the structure (20) forming a second jaw opposite the first jaw for axial blocking of the component (30) in the axial direction (A).

7. 3. The device (100) for maintaining or limiting vibrations as claimed in claim 1 or 2, characterized in that the device (100) for maintaining or limiting vibrations is a device for maintaining or limiting radial vibrations in a second radial direction perpendicular to the axial direction (A) and that the rotating bolt (10) is arranged to limit movement of the component (30) relative to the stationary structure (20) in the second radial direction when the rotating bolt (10) is in the second angular position, referred to as the locked position.

8. 3. The device (100) for maintaining or limiting vibrations according to claim 1 or 2, characterized in that the rotary bolt (10) comprises at least one pad (1) arranged to form a radial banking for limiting radial vibrations of the component (30) or for radially blocking the component (30) in a second radial direction perpendicular to the axial direction (A) in cooperation with the stationary structure (20) or with a second diametrically opposite device (100) for maintaining or limiting vibrations when the rotary bolt (10) is in the second angular position.

9. 3. A device (100) for maintaining or limiting vibrations according to claim 2, characterized in that said boss (4) is carried by at least one spring arm which is provided by or forms said elastic return means (3).

10. 10. A device (100) for maintaining or limiting vibrations according to claim 9, characterized in that the boss (4) has a pin arranged to follow the raised portion (25).

11. 10. A device (100) for maintaining or limiting vibrations according to claim 9, characterized in that the boss (4) is provided with a hole (204) forming a gripping member (2) for handling by a watchmaker or by automated manufacturing means.

12. 3. The device for maintaining or limiting vibrations (100) according to claim 2, characterized in that the raised portion (25) comprises at least one protrusion (252) directed towards the axis of rotation of the rotating bolt (10) and at least one cavity (251, 253) further away from the axis of rotation of the rotating bolt (10) than the protrusion (252), the cavity (251, 253) cooperating with the boss (4) to form a notch for stabilizing the rotating bolt (10).

13. A device (100) for maintaining or limiting vibrations according to claim 1 or 2, characterized in that said rotary bolt (10) comprises said elastic return means (3).

14. 3. A device (100) for maintaining or limiting vibrations according to claim 1 or 2, characterized in that the rotating bolt (10) comprises at least one gripping member (2) arranged to be handled by a watchmaker or by automated timepiece manufacturing means so as to control the rotation of the rotating bolt (10) between the first angular position, called the unlocked position, and the second angular position, called the locked position, and to lock and / or unlock the component (30) arranged between the structure (20) and the rotating bolt (10).

15. 15. A device (100) for maintaining or limiting vibrations as claimed in claim 14, characterized in that the gripping member (2) is spaced from a boss (4) of the rotating bolt (10) and that the gripping member (2) is held by an arm that is stiffer than the elastic return means (3).

16. 15. A device (100) for maintaining or limiting vibrations as claimed in claim 14, characterized in that the gripping member (2) is rigidly connected to a boss (4) provided on the rotating bolt (10), the gripping member (2) being held by the elastic return means (3).

17. 3. A device (100) for maintaining or limiting vibrations according to claim 1 or 2, characterized in that the elastic return means (3) comprises a number of strip spring segments (31, 32) in the form of circular arcs connected end to end and connected in pairs by loops.

18. 3. A device (100) for maintaining or limiting vibrations according to claim 1 or 2, characterized in that the rotating bolt (10) is substantially flat and perpendicular to its axis of rotation.

19. 3. A device (100) for maintaining or limiting vibrations as claimed in claim 2, characterized in that the cooperation between the boss (4) and the raised portion (25) is essentially planar in a plane perpendicular to the axis of rotation of the rotating bolt (10) and in that the elastic return means (3) are deformable in an essentially planar manner.

20. 3. A device (100) for maintaining or limiting vibrations according to claim 2, characterized in that the cooperation between the boss (4) and the raised portion (25) is essentially non-planar, the raised portion (25) comprising successive zones (26, 27, 28) of various heights relative to a plane perpendicular to the axis of rotation of the rotating bolt (10) and forming at least one notch that stabilizes the rotating bolt (10) by retaining a front face (47) of the boss (4), and in that the elastic return means (3) are deformable in three-dimensional space.

21. 3. A device (100) for maintaining or limiting vibrations according to claim 1 or 2, characterized in that the rotary bolt (10) is made in one piece and that the elastic return means (3) are integrated in the rotary bolt (10).

22. A system (500) for holding concentric timepiece components (30, 60), characterized in that the holding system (500) comprises at least one device (100) for maintaining or limiting vibrations as claimed in claim 1 or 2, forming first means for maintaining or limiting vibrations of a first component (30) and second means (50) for maintaining or limiting vibrations of a second component (60) concentric with the first component (30).

23. 23. A system (500) for holding concentric timepiece components (30, 60) according to claim 22, characterized in that the second means (50) for maintaining or limiting vibrations are configured to block or limit vibrations or axial and / or radial play of the second component (60).

24. A system (500) for holding concentric timepiece components (30, 60) according to claim 22, characterized in that the second means (50) for maintaining or limiting vibrations are banking or eccentric bolts making it possible to limit the axial and / or radial play of the second component (60) or to hold the second component (60) axially and / or radially.

25. A timepiece movement (1000) comprising at least one device (100) for maintaining or limiting vibrations as claimed in claim 1 or 2 or comprising a system (500) for holding concentric timepiece components (30, 60) as claimed in claim 22.

26. A timepiece (2000) comprising at least one device (100) for maintaining or limiting vibrations as claimed in claim 1 or 2 or comprising a system (500) for holding concentric timepiece components (30, 60) as claimed in claim 22.

Citation Information

Patent Citations

  • Time setting mechanism of perpetual date clock device

    JP2001516455A

  • Seconds setting mechanism for watches or clocks

    US2212535A