Bearing for timepiece, timepiece movement and timepiece

Abstract

The utility model relates to a bearing used for a timepiece, a clock movement and a timepiece, the bearing comprises a bearing housing provided with a through opening, the opening comprises a pressed compact assembly, the compact assembly comprises a first elastic member installed in a first hole of the through opening, and a second elastic member installed in a second hole of the through opening; a second elastic member disposed between the first elastic member and a second aperture of the opening; a pivoting element provided for pivoting the shaft of the component, the element being arranged in a central region of the second resilient member and positioned facing the second aperture through which the shaft of the component can be inserted into the opening; and a stone holding element inserted between the first elastic member and the second elastic member, the stone holding element being intended to receive an end portion of the shaft of the component; the stone bearing element is composed of a central portion and a peripheral portion, the central portion including a cavity in which a portion of the pivot element may be disposed, and the peripheral portion including a contact region configured to abut an entire periphery of the flat upper surface of the second resilient member.

Description

Technical Field

[0001] The embodiment of the utility model relates to a bearing for a timepiece, in particular a vibration-damping bearing for a shaft of a timepiece component. The utility model also relates to a clock movement provided with such a bearing. The utility model also relates to a timepiece comprising such a bearing and / or such a clock movement. Background Art

[0002] In timepieces, the shafts of timepiece components usually have a pivot at their end, which pivot rotates in a bearing mounted in a blank such as a plate or in a bridge of a clock movement. For some timepiece components, in particular balance wheels, it is common practice to have the bearings fitted with a vibration-damping mechanism. This is because, since the shaft pivots of these balance wheels are usually thin and the mass of these balance wheels is relatively high, without a vibration-damping mechanism, the pivots could break under the effect of an impact.

[0003] In the prior art, conventional vibration-damping bearings generally comprise a bushing, such as a drilled jewel, provided with a through opening forming an axial and radial guide element for the pivot. This jewel is driven into a bearing support, generally referred to as a setting, on which an endstone is mounted, forming an axial stop for the pivot. This setting is intended to convert radial impacts into axial impacts. This setting is held against the back of the bearing housing by elastic means, generally a damping spring, which is arranged to exert an axial stress on the upper part of the endstone. The shaft pivot is inserted into the through opening of the drilled jewel. This bearing absorbs impacts because the assembly formed by the setting, the drilled jewel and the endstone can move due to the damping spring.

[0004] However, one of the main drawbacks of this type of bearing is its lack of robustness, in particular due to ageing of the lubricant it contains or due to wear over time, which modifies the operation of the bearing and makes it less reliable. As a result, this type of bearing is no longer able to guarantee perfect radial re-centring of the balance staff in the event of an impact, since this re-centring is generally random. The problem here lies in the fact that, in a given anti-vibration configuration, the rate of the movement is set at a given moment T. After an impact, the configuration of the bearing changes, for example due to an imperfect re-centring, and the rate adjustment previously performed is no longer optimal. In other words, the position of the balance staff has a direct influence on the rate of the movement, and this re-centring error must therefore be overcome in order to improve horological stability. Utility Model Content

[0005] One of the objects of the invention is to provide a bearing for a timepiece which has small dimensions and which allows the axes of the timepiece components to be repositioned extremely efficiently at all times.

[0006] Another object of the present invention is to provide a bearing for repeatedly positioning a shaft of a timepiece component.

[0007] Another object of the utility model is to provide a small-sized bearing.

[0008] To this end, the utility model relates to a bearing for a timepiece, the bearing comprising a bearing housing provided with a through opening, the opening comprising a compact assembly under pressure, the compact assembly comprising:

[0009] - a first elastic member mounted in a first orifice of the through opening;

[0010] - a second elastic member arranged between the first elastic member and a second orifice of the opening;

[0011] a pivoting element provided for pivoting an axle of a timepiece component, said element being arranged in a central region of said second elastic member and positioned facing said second orifice through which said axle of said component can be inserted into said opening; and

[0012] - a support stone element inserted between said first elastic member and said second elastic member, said support stone element being intended to receive an end portion of said shaft of said component,

[0013] The support stone element is composed of a central portion including a cavity in which a portion of the pivot element can be arranged, and a peripheral portion including a contact area configured to bear against the entire periphery of the flat upper surface of the second elastic member.

[0014] In other embodiments:

[0015] - said central portion and said peripheral portion respectively form the end and the base of said support stone element;

[0016] - the support stone element is mounted axially movable in the through-opening relative to the axis of rotation of the through-opening;

[0017] - said central portion of said support stone element being configured so as to be insertable into said first orifice of said through opening in the event that said timepiece may be subjected to an impact;

[0018] - said peripheral portion of said support stone element comprises a stop zone configured to cooperate with said first elastic member in the event that said timepiece is likely to be subjected to an impact;

[0019] - a portion of the pivoting element arranged in the cavity protrudes from the central area of ​​the second elastic member, the portion comprising an outer surface positioned near the back of the cavity;

[0020] - the first elastic member is configured to deform substantially axially relative to the axis of revolution of the through-opening;

[0021] - said first elastic member comprises an element for fastening the member in said through opening and a pressing element intended to bear against a central portion of said support stone element and a connecting element connecting said pressing element and said fastening element together;

[0022] - the second elastic member comprises a portion for connecting the member in the through-opening and a portion for fastening the pivot element in a central region of the member, the connecting portion and the fastening portion being connected to each other by at least one elastic element of the member;

[0023] - the second elastic member is fixedly mounted in the bearing housing;

[0024] - the second elastic member is configured to deform substantially radially relative to the axis of revolution of the through-opening;

[0025] The bearing housing, the through-opening, the first and second elastic members, the support stone element and the pivot element have an axis of revolution coinciding with a central axis of the bearing.

[0026] Another aspect of the present invention relates to a timepiece movement equipped with such a bearing.

[0027] Another aspect of the invention relates to a timepiece comprising such a timepiece movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features and advantages of the present invention will become more apparent by reading the following description of specific embodiments of the present invention and the accompanying drawings, in which specific embodiments of the present invention are given only as illustrative and non-limiting examples, in which:

[0029] Figure 1 is a perspective view of a bearing for a timepiece according to an embodiment of the utility model;

[0030] Figure 2 According to the embodiment of the present utility model Figure 1 A top view of the bearing shown;

[0031] Figure 3 According to the embodiment of the present utility model Figure 2 A cross-sectional view of the bearing shown along axis III-III; and

[0032] Figure 4 Detailed Description of the Invention It is an exploded view of all components forming a bearing according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] Figures 1 to 4 An embodiment of a bearing 1 for a timepiece, such as a watch, in particular a wristwatch, is shown. Such a bearing 1 may be part of a clockwork of a clockwork movement, such as an electronic or mechanical movement. For example, the clockwork may be a sprung oscillator provided with a balance wheel and a hairspring.

[0034] This bearing 1 is also called a "clock bearing", "anti-vibration bearing" or "vibration-damping bearing", and is particularly suitable for pivoting a ceramic or glass shaft, in particular a shaft pivot. Such a shaft is also called a "rotating shaft" or "pivoting shaft" or "barrel shaft", and this shaft can be the shaft of a timepiece component, also called "shaft of a rotating, moving part", for example the pivot stem of a balance wheel when the clockwork is an oscillator.

[0035] Such a bearing 1 is effectively configured to guide in rotation a shaft of a timepiece component about a central axis A1 of the bearing 1 (also called bearing mounted axis A1 ) and also to prevent translation of the shaft, in particular to limit axial and / or radial translation of the shaft relative to the axis A1 .

[0036] It should be noted that guiding the shaft of this timepiece component also includes guiding said component itself, seeing then that its axial and / or radial translation relative to axis A1 is limited by this bearing 1 .

[0037] Such a bearing 1 is intended to be assembled or rigidly connected to a blank of a timepiece movement, for example a bridge such as a balance bridge, or a plate. Alternatively, this bearing 1 may be formed directly in the body of the plate or bridge, for example by machining.

[0038] refer to Figure 4 The bearing 1 comprises a bearing housing 2 which is configured to receive a compact assembly 10 consisting of the following components: a pivot element 5 , a support stone element 4 and first and second elastic members 3 , 6 .

[0039] The bearing housing 2 comprises a through opening 8, also referred to as a "central through opening", which extends in a direction parallel to the axis of revolution A2 (also referred to as the axis of the unit) of the bearing housing 2. Such a through opening 8 comprises a first orifice 9a and a second orifice 9b at each of its ends. It should be noted that the cross section of the first orifice 9a is preferably greater than the cross section of the second orifice 9b. As will be seen below, the first orifice 9a is configured to help mount the first elastic member 3 in the through opening 8, and the second orifice 9b is configured to allow the shaft of the timepiece component to be inserted into the same through opening 8.

[0040] In the bearing housing 2, the through opening 8 comprises an axis of revolution A3 coinciding with the central axis A1 of the bearing 1, which is also referred to as the axis of the through opening 8. This through opening 8 has a geometry of revolution about the axis A3, which forms a base or housing for the bearing housing 2. It should be noted that the base corresponds to the Figure 4 The inner peripheral wall 20 of the through opening 8 visible in FIG. 8 delimits a volume in the bearing housing 2. In this configuration, such a seat therefore extends between a first orifice 9a and a second orifice 9b forming part of such a seat.

[0041] In this bearing 1, the through opening 8 is configured to receive a compact assembly 10 or to participate in the arrangement or installation of the compact assembly 10 in the bearing housing 2. In this configuration, the compact assembly 10 comprises mounting areas 11a, 21a, 22a, 22b, which are intended to cooperate with the inner peripheral wall 20 of the through opening 8 in order to ensure the arrangement of the compact assembly 10 in the bearing housing 2. Such mounting areas 11a, 21a, 22a, 22b are included in / on the first and second elastic members 3, 6 of the assembly 10. In an alternative embodiment, these mounting areas 11a, 21a, 22a, 22b are only included in / on the first and second elastic members 3, 6. In other words, these mounting areas 11a, 21a, 22a, 22b are the only components of the compact assembly 10 that perform / ensure the mounting of the compact assembly in the bearing housing 2 to form the bearing 1. As will be seen later, the mounting areas 11 a , 21 a , 22 a , 22 b cooperate with the bearing housing 2 by abutting and / or being fastened to the housing 2 .

[0042] In this assembly, the pivot element 5, the support stone element 4, the first elastic member 3 and the second elastic member 6 comprise central axes A4, A5, A6, A7, respectively. When the compact assembly 10 is mounted in the bearing housing 2, these axes, denoted A4, A5, A6, A7, coincide with the axes A1, A2, A3 of the bearing 1, the bearing housing 2 and the through opening 8, respectively.

[0043] As already mentioned, this compact assembly 10 is formed from the following consecutive components: a first elastic member 3 , a support stone element 4 , a second elastic member 6 including a pivoting element 5 .

[0044] The first elastic member 3 is, for example, an elastic element of the return spring type, which is intended to elastically reset and appropriately axially replace the support stone element 4 located in the through opening 8 of the bearing housing 2 and therefore the axis of the timepiece component after the timepiece, in particular the timepiece movement, is subjected to a substantially axial impact. In other words, the first elastic member 3 is configured to deform substantially axially relative to the axis of rotation A3 of the through opening 8. In other words, this first member 3 is configured to always reposition the axis of the timepiece component axially in the same position, in a manner to absorb substantially axial impacts. It can therefore be understood that this member 3 is configured to place the axis of the timepiece component axially in its initial or rest position relative to the axis of rotation denoted A3 in response to these impacts.

[0045] This first elastic member 3 is rigidly connected or fastened to the bearing housing 2. More specifically, it is mounted in the first orifice 9a of the through opening 8. To this end, it comprises at least one connecting element 11c, at least one pressing element 11b and at least one fastening element 11a connected together.

[0046] More specifically, the member 3 comprises a fastening element 11a, also called “rigid connection element”, configured to be arranged in a recess 12 formed in the first orifice 9a of the through opening 8. Figure 4 , the first member 3 comprises two fastening elements 11a. Each fastening element 11a is configured to be arranged in a recess 12 provided in the through opening 8 so as to help mount the first elastic member 3 in the through opening 8. It should be noted that these fastening elements 11a form part of the mounting areas 11a, 21a, 22a, 22b of the assembly 10 in the bearing housing 2, as described above.

[0047] The first elastic member 3 also comprises pressure elements 11b in contact with the support stone element 4. More specifically, the pressure elements 11b are intended to abut against the central portion 13a of the support stone element 4, in particular against the end of the support stone element 4. These pressure elements 11b are configured to apply a substantially axial restoring force, in particular an axial and elastic force, to the support stone element 4. Figure 4 It should be noted that the first elastic member 3 preferably includes two pressing elements 11b.

[0048] The first elastic member 3 further comprises a connecting element 11c connecting the pressing element 11b and the fastening element 11a together. In the first elastic member 3, there are two such connecting elements 11c, such as Figure 4 Visible in.

[0049] In this compact assembly 10, the support stone element 4 is intended to receive an end portion (or ends) of an axis of a timepiece component corresponding to the end of the pivot, or to constitute an abutment for the end portion of the axis. In the through-opening 8, the support stone element 4 is interposed between the first and second elastic members 3, 6. This support stone element 4 is mounted so as to be movable axially and radially in this through-opening 8 relative to the axis of revolution A3 of this through-opening 8.

[0050] The support stone element 4 is composed of a central portion 13a and a peripheral portion 13b and an inner surface 14a and an outer surface 14b. It should be noted that in this element 4, the central portion 13a is surrounded by the peripheral portion 13b. This support stone element 4 includes a step area 13c, which connects the central portion 13a and the peripheral portion 13b together and is Figure 3 and Figure 4 This is visible on the outer surface 14b of the element 4 shown. In this configuration, the central portion 13a and the peripheral portion 13b form the end and base of the support stone element 4, respectively.

[0051] In the inner surface 14a of the support stone element 4, the central portion 13a includes Figure 3 14a, in which a portion of the pivoting element 5 can be arranged, as will be seen later. In this inner surface 14a, the peripheral portion 13b comprises a contact area 23, which is configured to bear directly on the periphery of the flat upper surface of the second elastic member 6. In an alternative embodiment, the contact area 23 is configured to bear directly on the entire periphery of the flat upper surface of the second elastic member 6. It should be noted that such a cavity 15 can be produced by machining, in particular by conventional machining using a diamond tool or even by laser machining.

[0052] As mentioned before, the central portion 13a and the peripheral portion 13b form the end and the base of the support stone element 4, respectively. In particular during a substantially axial impact to which the timepiece may be subjected, the end is constructed / shaped to be inserted into the first elastic member 3, in particular into the space defined therein, which is delimited by the connecting element 11c of the first elastic member 3. The base is constructed to form a stop zone for the support stone element 4 by cooperating with the first elastic member 3 during such an impact. In fact, this stop zone is defined on a portion of the outer surface 14b of the support stone element 4 located on the base. In this configuration, the stop zone can cooperate with the connecting element 11c and the fastening element 11a so as to limit the axial displacement of the shaft of the timepiece component during an impact, in particular during a substantially axial and strong impact.

[0053] Such a support stone element 4 may be, for example, a support stone made of a synthetic gemstone or a non-single-crystal or polycrystalline material such as ruby ​​or zirconium oxide, an element made of a metal material or a silicon-based material (such as single-crystal silicon or polycrystalline silicon, its oxide, nitride or carbide, which may also be single-crystal or polycrystalline).

[0054] In this compact assembly 10, the pivoting element 5 is intended to pivot the shaft of the timepiece component. The pivoting element 5 includes a central hole 17 for receiving the shaft of the timepiece component and in particular the end portion of the shaft. The pivoting element 5 is arranged in the central area of ​​the second elastic member 6, positioned to face the second orifice 9b, and the shaft of the timepiece component can be inserted into the through opening 8 through the second orifice. This pivoting element 5 includes an upper surface 18a, a side surface 18b and a lower surface 18c, wherein the side surface 18b connects these upper surfaces 18a and lower surfaces 18c together. In this configuration, the upper surface 18a of the pivoting element 5 is arranged to face the inner surface 14a of the support stone element 4, and the lower surface 18c faces the second orifice 9b. More specifically, the pivoting element 5 includes a portion protruding from the second elastic member 6, which is arranged in the cavity 15 of the support stone element 4 and has an upper surface 18a, which is positioned near the back surface 16 of the cavity 15.

[0055] This pivot element 5 is also called a "bushing", which can be a drilled gem, usually made of synthetic gemstone, or made of non-single crystalline or polycrystalline material such as ruby ​​or zirconium oxide, or made of silicon-based material (such as single crystal silicon or polycrystalline silicon, its oxide, nitride or carbide, which can also be single crystal or polycrystalline), or a ring made of metal.

[0056] In this compact assembly 10, the second elastic member 6 is fixedly arranged / mounted in the through opening 8 and thus in the bearing housing 2. In this through opening 8, the second elastic member 6 is arranged on a shoulder 19 included on the inner peripheral wall 20 of the through opening 8. It should be noted that the shoulder 19 is located behind the orifice 9a and is orthogonal to the surface of the inner peripheral wall 20.

[0057] In this assembly 10, the second elastic member 6 is configured to deform substantially radially relative to the axis of revolution A3 of the through opening 8. In other words, it is configured to always re-center the axis of the timepiece component radially in the same position by being configured in a manner absorbing radial shocks.

[0058] More specifically, the second elastic member 6 comprises a connecting portion 21a for connecting to the inner peripheral wall 20 of the through opening 8 and a fastening portion 21b for fastening the pivoting element 5 in the central region of the member 6, the connecting portion 21a and the fastening portion 21b being connected to each other by at least one elastic element 21c of the second elastic member 6. It should be noted that the connecting portion 21a and the fastening portion 21b are rigid portions of the member 6 compared to the elastic element 21c. These connecting portion 21a and the fastening portion 21b are easily elastically deformed when subjected to stress.

[0059] Said at least one elastic element 21c is configured to ensure radial deformation of the second elastic member 6 by controlling the displacement of the fastening portion 21b relative to the connecting portion 21a during an impact on the movement. In other words, the elastic element 21c is configured to place the connecting portion 21a or the axis of the pivoting element 5 or the timepiece part radially in its initial or rest position relative to the axis of revolution indicated as A3 in response to said impact.

[0060] The second elastic member 6 also has flat top and bottom surfaces, which are preferably substantially parallel to each other.

[0061] The connecting portion 21a forms an outer peripheral wall of the second elastic member 6. In this configuration, when the second elastic member 6 is installed in the through-opening 8, the side surface 22a of the outer peripheral wall and therefore the side surface of the connecting portion 21a rests on all or part of the inner peripheral wall 20 of the through-opening 8. More specifically, the connecting portion 21a is configured to be elastically deformed when the second elastic member 6 is inserted into the through-opening 8. The connecting portion 21a can then bear against the inner peripheral wall 20 of the through-opening 8 from its side surface 22a. For example, the second elastic member 6 can be inserted into the through-opening 8 by driving it in.

[0062] The connecting portion 21a also comprises a contact surface 22b configured to cooperate with a shoulder 19 comprised in the through opening 8. With reference to the above example, it should be noted that the second elastic member 6 is inserted into the through opening 8 by driving until it abuts via the contact surface 22b of the connecting portion 21a against the shoulder 19 of the through opening 8. It should be noted that the contact surface 22b is comprised on a flat lower surface of the second member 6.

[0063] Therefore, it should be understood that such a connecting portion 21a allows the second elastic member 6 to be fixedly arranged / installed in the through opening 8. In other words, the connecting portion 21a helps to ensure that the second elastic member 6 is fastened or maintained in place with sufficient strength to prevent any axial, radial and / or angular relative displacement of the second member 6 relative to the rotation axis A3 of the through opening 8.

[0064] It should be noted that the connecting portion 21a forms part of the mounting areas 11a, 21a, 22a, 22b of the compact assembly 10 in the bearing housing 2. In other words, the contact surface 22b and the side surface 22a of the connecting portion 21a are included in the mounting areas 11a, 21a, 22a, 22b.

[0065] The connection part 21a also comprises a support surface 22c, which forms / comprises the periphery of a flat upper surface, which is configured to cooperate with the contact area 23 of the support stone element 4. In fact, the base of the support stone element 4 can be directly supported on this support surface 22c. In the connection part 21a, this support surface 22c is positioned above or perpendicular to the contact surface 22b. In addition, this support surface 22c is substantially parallel to the contact surface 22b.

[0066] As already mentioned, the second elastic member 6 also includes a fastening portion 21b for fastening the pivot element 5 in the central area of ​​the second member 6. The fastening portion 21b forms the inner peripheral wall of the second elastic member 6. The pivot element 5 can be a component attached to the second member 6 by its side surface 18b, which is configured to be completely or partially connected to the inner peripheral wall. This connection can be achieved by driving in, bonding or welding.

[0067] It should be noted that in an alternative embodiment, the pivot element 5 may be an integral part of the second member 6 by being made in one piece with the fastening portion 21 b. In this configuration, the central area of ​​the second member 6 is then considered / formed as the pivot element 5.

[0068] This second elastic member 6 may be manufactured by micromachining, using a Deep Reactive Ion Etching process (generally indicated by its acronym “DRIE”) for a member 6 comprising in particular silicon, or using a Liga process, such as UV-Liga, for a member 6 based on nickel, for example.

[0069] Thus, the bearing 1 according to the invention has smaller / reduced overall dimensions compared to prior art bearings, without any impact on the operation of the bearing 1. This reduced dimension is achieved in particular by the compact assembly 10 formed by the first elastic member 3 and the second elastic member 6 and the support element 4 and the pivot element 5, and more precisely by:

[0070] - a specific shape of the support stone element 4 which allows the central portion 13a (in this case, the end) of this element 4 to move in the first orifice 9a of the through opening 8 in the bearing housing 2;

[0071] - a specific shape of the support stone element 4 which allows its base to rest directly on the flat upper surface of the second elastic member 6 , perpendicular to the shoulder 19 ;

[0072] - in the inner surface 14a of the support stone element 4 there is a cavity 15 in which a part of the pivoting element 5 can be arranged;

[0073] Positioning the pivoting element 5 in a central region of the second elastic member 6 , wherein a part of the body of the pivoting element 5 is included in the thickness of the second elastic member 6 .

[0074] It should be noted that in this bearing 1, the support stone element 4, by bearing on the upper surface of the second elastic member 6, exerts an axial and elastic force only over the entire periphery of the flat upper surface of the second elastic member 6, under the action of the pressure element 11b bearing on the end of the support stone element 4. This force is then applied perpendicularly to the shoulder 19 of the through opening 8 through the contact area 23 of the support stone element 4 to the support surface 22c forming the periphery.

[0075] It should also be noted that a substantially axial impact is to be understood as a "strictly axial" or "substantially axial" or "partially axial" impact. Similarly, a substantially radial impact is to be understood as a "strictly radial" or "substantially radial" or "partially radial" impact.

[0076] Furthermore, in this specification, “substantially parallel” is understood to mean “strictly parallel or substantially parallel”.

[0077] Such a bearing 1 thus helps to ensure axial and radial re-centring / re-positioning of the shaft of a timepiece component in its rest position after the timepiece has been subjected to a shock or acceleration.

Claims

1. A bearing (1) for a timepiece, characterized in that: The bearing comprises a bearing housing (2) provided with a through opening (8), the through opening (8) comprising a pressurized compact assembly (10), the compact assembly comprising: - a first elastic member (3) mounted in a first orifice (9a) of the through opening (8); - a second elastic member (6) arranged between the first elastic member (3) and a second orifice (9b) of the through opening (8); a pivoting element (5) provided for pivoting an axle of a timepiece component, said pivoting element (5) being arranged in a central region of said second elastic member (6) and being positioned facing said second orifice (9b) through which said axle of said timepiece component can be inserted into said through-opening (8); and - a support stone element (4) interposed between said first elastic member (3) and said second elastic member (6), said support stone element being intended to receive an end portion of said shaft of said timepiece component; The support stone element (4) is composed of a central part (13a) and a peripheral part (13b), the central part (13a) including a cavity (15) in which a part of the pivot element (5) can be arranged, and the peripheral part (13b) including a contact area (23) configured to abut against the entire periphery of the flat upper surface of the second elastic member (6).

2. The bearing (1) according to claim 1, wherein: The central portion (13a) and the peripheral portion (13b) form the end and base of the support stone element (4), respectively.

3. The bearing (1) according to claim 1, wherein: The support stone element (4) is mounted so as to be axially movable in the through-opening (8) relative to the axis of rotation (A3) of the through-opening (8).

4. The bearing (1) according to any one of claims 1 to 3, wherein: The central portion (13a) of the support stone element (4) is configured to be inserted into the first orifice (9a) of the through opening (8) in the event that the timepiece is likely to be subjected to an impact.

5. The bearing (1) according to any one of claims 1 to 3, wherein: The peripheral portion (13b) of the support stone element (4) comprises a stop zone configured to cooperate with the first elastic member (3) in the event that the timepiece is likely to be subjected to an impact.

6. The bearing (1) according to any one of claims 1 to 3, wherein: The portion of the pivot element (5) arranged in the cavity (15) protrudes from a central area of ​​the second elastic member (6), and the portion of the pivot element (5) arranged in the cavity (15) includes an outer surface positioned near a back portion (16) of the cavity (15).

7. The bearing (1) according to any one of claims 1 to 3, wherein: The first elastic member (3) is configured to deform substantially axially relative to an axis of revolution (A3) of the through-opening (8).

8. The bearing (1) according to any one of claims 1 to 3, wherein: The first elastic member (3) comprises a fastening element (11a) for fastening the first elastic member (3) in the through opening (8), a pressing element (11b) intended to abut against a central portion (13a) of the support stone element (4), and a connecting element (11c) connecting the pressing element (11b) and the fastening element (11a) to each other.

9. The bearing (1) according to any one of claims 1 to 3, wherein: The second elastic member (6) comprises a connecting portion (21a) for connecting the second elastic member (6) in the through opening (8) and a fastening portion (21b) for fastening the pivot element (5) in the central area of ​​the second elastic member (6), the connecting portion (21a) and the fastening portion (21b) being connected to each other via at least one elastic element (21c) of the second elastic member (6).

10. The bearing (1) according to any one of claims 1 to 3, wherein: The second elastic member (6) is fixedly mounted in the bearing housing (2).

11. The bearing (1) according to any one of claims 1 to 3, wherein: The second elastic member (6) is configured to deform substantially radially relative to the axis of revolution (A3) of the through-opening (8).

12. The bearing (1) according to any one of claims 1 to 3, wherein: The bearing housing (2), the through opening (8), the first elastic member (3), the second elastic member (6), the support stone element (4) and the pivot element have a rotation axis (A2, A3, A4, A5, A6, A7) coinciding with the central axis (A1) of the bearing (1).

13. A watch movement, characterized in that: The timepiece movement is provided with such a bearing (1) according to any one of claims 1 to 12.

14. A timepiece, characterized in that: The timepiece comprises a timepiece movement according to claim 13 .

Images