• 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 balance with inertia adjustment, for a timepiece, comprising a hub (4) defining the axis of pivoting of the balance, a front face having a nock (12), a rear face, a serge (10), at least one arm (2) comprising a housing (3) configured to receive and hold in place at least one feeder (5). According to the invention, the at least one flyweight (5) is mounted on the rear face of the balance, on the at least one arm (2) of the balance. The weight (5) comprises a through hole (50) configured to cooperate with a tool so as to transmit a torque to the weight (5) about its axis of rotation. Thus, the rocker according to the invention provides a compact clockwork and allows its adjustment from both sides of the balance.
    公开号:CH711766A2
    申请号:CH01659/15
    申请日:2015-11-13
    公开日:2017-05-15
    发明作者:Stranczl Marc；Graf Emmanuel；Kaelin Laurent
    申请人:Nivarox-Far S A；
    IPC主号:
    专利说明:

    Description
    Field of the invention [0001] The invention relates to a rocker with inertia adjustment having means for adjusting the inertia.
    The invention also relates to a watch movement comprising such a system and a timepiece equipped with such a movement.
    BACKGROUND OF THE INVENTION It is known from patent CH 705 238 a pinch weight balance allowing adjustment of inertia and / or balancing. The balance has two arms each having a housing for receiving and pinching in position of a rod of a feeder, the head of the feeder resting against the front face of the balance.
    The balance described above has several disadvantages. It will be mentioned first of all that access to the flyweights can be difficult depending on the architecture of the movement and make the adjustment of the inertia complicated, which can lead to an increase in adjustment costs. In addition, such a pendulum is relatively bulky, the head of the weights resting in the wedge of the balance, which can cause an increase in the thickness of the movement.
    Such a balance also has the disadvantage of having a large size within the movement, and the flyweight can hit the peak when mounted on the front face of the balance. Indeed, typically the thickness of the head of the feeder is 0.2 mm, so as to receive an adjustment slot of 0.11 mm in depth while maintaining a good mechanical strength. In the case where the weight is mounted on the front face of the balance, the movement does not have these 0.2 mm and the thickness of the head must be reduced accordingly, which no longer allows to receive a slot adjustment. SUMMARY OF THE INVENTION [0006] One of the objectives of the invention is to overcome the various drawbacks of these known techniques.
    More specifically, an object of the invention is to provide a rocker with inertia adjustment to obtain a compact clockwork movement.
    The invention also aims to provide a balance allowing its adjustment from both sides of the balance.
    The invention also aims, at least in a particular embodiment, to provide a balance with inertia adjustment that is simple to implement and inexpensive to achieve.
    These objectives, as well as others which will appear more clearly later, are achieved according to the invention with the aid of a balance with inertia adjustment, for a timepiece, comprising a hub defining the pivoting axis of the balance, a front face having a recess, a rear face, a serge, at least one arm comprising a housing configured to receive and hold in place at least one flyweight configured to pivot about an axis of rotation.
    According to the invention, the at least one flyweight is mounted on the rear face of the balance, on the at least one arm of the balance, and in that the counterweight comprises a through hole configured to cooperate with a tool of way to transmit a torque to the weight around the axis of rotation.
    According to other advantageous variants of the invention: - the through hole of the feeder comprises a section of a shape arranged to cooperate with said tool so as to transmit the torque to said at least one feeder; the section of the through hole of the counterweight is torx-shaped; - The through hole opens on the front face and the rear face of the balance; - The at least one feeder comprises a head and a foot, the axis of the through hole being coincident with the axis of rotation of the weight, and the head being in the form of a disc with a flat for adjusting the inertia of the pendulum; - The through hole of the weight is off-center with respect to the axis of rotation of the weight to be able to adjust the inertia of the balance; the head has a thickness of less than 0.15 mm; - The at least one arm comprises an elastic portion configured to maintain the weight; the at least one arm, the serge and the hub form a monobloc element.
    The invention also relates to a watch movement comprising a balance according to the invention.
    The invention also relates to a timepiece comprising a watch movement according to the invention.
    Thus, the object of the present invention, by its various functional and structural aspects described above, provides a balance with relatively compact inertia adjustment.
    BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the invention will emerge more clearly on reading the following description of a particular embodiment of the invention, given as a simple illustrative and non-limiting example, and appended figures, among which: FIG. 1 is a perspective view of a beam according to the invention according to a first embodiment; fig. 2 is a sectional view of the balance according to the invention shown in FIG. 1; figs. 3a and 3b are respectively perspective views from above and below of a feeder equipping a balance according to the invention.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0017] A clockwork movement according to an exemplary embodiment will now be described in the following with reference to FIGS. 1, 2, 3a and 3b.
    The invention relates to a rocker 1 with inertia adjustment, for a timepiece, comprising a hub 4 defining the pivot axis of the rocker 1, a front face having a core, a rear face, a serge 10 at least one arm 2 comprising a housing 3 configured to receive and hold in place at least one feeder 5.
    According to the embodiment illustrated in the figures, the balance 1 comprises a hub 4 defining the pivot axis A of the balance 1, a serge 10, a web 11 extending in a plane between the hub 4 and the serge 10, the web 11 comprising at least one arm 2 connecting the serge 10 to the hub 4, the at least one arm 2 comprising a housing 3 configured to receive and hold in place at least one flyweight 5.
    According to the invention, the balance comprises a front face having a core 12 and a rear face which can also be embedded.
    According to a particular embodiment, the height of the serge 10 may be identical to the web 11, in this case the balance 1 has no core which allows to obtain a balance as compact as possible.
    As illustrated, the balance 1 comprises two arms, forming a hub 4 at their intersection, the hub 4 being provided with an orifice 40 for receiving a rocker shaft 41, the web 11 being formed by the two arms and the hub 4.
    The serge 10 is circular in shape and has no protruding part, just like the arms 2, so that the balance 1 is as compact as possible.
    The rocker 1 comprises rigid parts constituted by the hub 4, the serge 10, and the arms 2 connecting the serge 10 to the hub 4. The housing 3 is delimited, on the one hand by a rigid portion of the rocker 1, and on the other hand by an elastically deformable arm.
    According to a particular embodiment of the invention, not shown in the figures, the serge 10 of the balance is of the same thickness as the arms 2 of the balance 1 and is thus confused with the arms 2 of the balance, the arms 2 and the serge 10 then forming a planar element.
    According to the invention, the housing 3 is delimited by a rigid portion of the arm 2, and by an elastic portion 20 secured to the hub 4 or the serge 10, the resilient portion 20 being permanently biased towards the rigid portion of the arm 2 defining the housing 3.
    According to the embodiment illustrated by the figures, the weight 5 comprises a head 51 in the form of a disk and a foot 52 of cylindrical shape.
    Advantageously, the housing 3 has a shape complementary to that of the foot 52 of the weight 5. This embodiment is particularly advantageous because it allows to limit the thickness of the balance 1 once the weights 5 mounted on the pendulum 1.
    In this preferred embodiment, the elastic portion 20 extends in the plane of the web 11.1e arm 2 having a recess 21 facilitating the deformation of the elastic portion 20.
    When placing the weights 5 in the housing 3, the weights 5 are pinched in the housing 3 and are held by friction in their position under the effect of the elasticity of the elastic arm 20.
    According to a first embodiment of the invention, the control weights 5 are provided with a through hole 50 to adjust the angular position of the weight 5 by means of a tool cooperating with the through hole 50 to transmit a torque around the axis of rotation P of the flyweight 5. The through hole passes through the center of the weight 5 so that the axis of rotation P of the weight 5 is coincident with the axis of the hole 50. According to this embodiment, each weight 5 has a flat portion 53 on the disk forming the head 51, so as to adjust the inertia of the balance 1.
    According to another embodiment, not shown in the figures, the through hole 50 may be off-center with respect to the axis of rotation P of the weight 5 so as to adjust the inertia of the balance 1. According to this mode embodiment, the weight 5 may not have flat.
    Of course, the skilled person will adapt the balance 1 and set up any other type of feeder 5 so as to adjust the inertia of the balance 1. We could, for example, use a flyweight in the form of a cylinder, having no foot, and with a through hole off-center relative to the axis of rotation of the weight.
    According to a preferred embodiment of the invention, visible in FIGS. 3a and 3b, the through hole 50 opens on the front and rear faces of the balance 1 and is in fact accessible from both sides of the balance 1.
    Such a configuration therefore allows adjustment from both sides of the balance 1, one being used during the setting in motion and the other during the after-sales service for example.
    Another advantage of such a configuration is that the through hole 50 allows tool positioning in automatic simpler because it eliminates the accuracy along the z axis.
    According to a particularly advantageous aspect of the invention, the through hole 50 is a star-shaped hole with six branches, also known as "torx". Such a geometry for the through hole 50 allows better transmission of the torque between the tool and the weight 5 while limiting the risk of damaging the flyweight 5. Of course, other hole shapes could have been considered, such as hexagonal or square shaped holes for example.
    According to the invention, the head 51 of the weight 5 has a thickness of less than 0.20 mm to be able to use it easily in ultra-flat movements.
    Such pendulum 1 according to the invention allows in particular to adjust the angular position of the weights 5 on the balance 1 regardless of the mounting direction of the balance 1. Generally, the skilled person will choose the direction of mounting weights 5 on the balance 1 according to the ease of access to the weights 5 once the balance 1 mounted in a movement and the available space.
    In the case of mounting with the head 51 of the weight 5 under the balance 1 radial positioning freedom of the weight 5 is greater, the risk of collision with the piton does not exist. The diameter of the head 51 can be increased to obtain more regulating power, and / or the diameter of the foot 52 can also be increased to improve the tightening torque.
    The invention also relates to a watch movement and a timepiece equipped with a balance according to the invention.
    With these different aspects of the invention, there is a compact balance to adjust the position of the flyweights easily and inexpensive to manufacture.
    Of course, the present invention is not limited to the example shown and is susceptible of various variations and modifications that will occur to those skilled in the art.
    NOMENCLATURE
    1. Pendulum, 10. Serge, 11. Sail, 12. Noyure, 2. Arm, 20. Elastic part, 21. Evidement, 3. Housing, 4. Hub, 40. Orifice, 41. Balance pin, 5. Masseur,
    权利要求:
    Claims (11)
    [1]
    1. balance (1) with inertia adjustment, for timepiece, comprising a hub (4) defining the pivot axis (A) of said balance (1), a front face having a groove (12), a rear face, a serge (10), and at least one arm (2) comprising a housing (3) configured to receive and hold in place at least one flyweight (5) configured to pivot about an axis of rotation P, characterized in that said at least one flyweight (5) is mounted on the rear face of the balance (1), on said at least one arm (2) of the balance (1), and in that the flyweight (5) comprises a hole through passage (50) arranged to cooperate with a tool so as to transmit a torque to said at least one flyweight (5) about the axis of rotation P.
    [2]
    2. Pendulum (1) according to claim 1, wherein the through hole (50) of the feeder (5) comprises a section of a shape arranged to cooperate with said tool so as to transmit the torque to said at least one feeder (5).
    [3]
    3. Pendulum (1) according to claim 1 or 2, wherein the cross section of the through hole (50) of the feeder (5) is torx-shaped.
    [4]
    4. Pendulum (1) according to one of claims 1 to 3, wherein the through hole (50) opens on the front face and the rear face of the balance (1).
    [5]
    5. Pendulum (1) according to one of claims 1 to 4, wherein the at least one feeder (5) comprises a head (51) and a foot (52), the axis of the through hole (50) being coincides with the axis of rotation P of the flyweight (5), and the head (51) being in the form of a disk with a flat (53) to be able to adjust the inertia of the balance (1).
    [6]
    6. Pendulum (1) according to one of claims 1 to 4, wherein the through hole (50) of the weight (5) is off-center with respect to the axis of rotation P to adjust the inertia of the balance ( 1).
    [7]
    7. Pendulum (1) according to one of claims 1 to 6, wherein the head (51) of the weight (5) has a thickness less than 0.20 mm.
    [8]
    8. Pendulum (1) according to one of claims 1 to 7, wherein the at least one arm (2) comprises an elastic portion (20) configured to maintain the weight (5).
    [9]
    9. Pendulum (1) according to any one of claims 1 to 8, wherein the at least one arm (2), the serge (10) and the hub (4) form a monobloc element.
    [10]
    Clockwork movement comprising a balance (1) according to one of claims 1 to 9.
    [11]
    Timepiece comprising a movement according to claim 10.
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    同族专利:
    公开号 | 公开日
    CH711766B1|2019-08-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN111913381A|2019-05-07|2020-11-10|尼瓦罗克斯-法尔股份公司|Balance wheel of timepiece|
    JP2021096243A|2019-12-18|2021-06-24|ニヴァロックス−ファー ソシエテ アノニム|Timepiece balance|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01659/15A|CH711766B1|2015-11-13|2015-11-13|Balance with inertia adjustment.|CH01659/15A| CH711766B1|2015-11-13|2015-11-13|Balance with inertia adjustment.|
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