CN113267985A - Hairspring adjusting mechanism, balance wheel and hairspring mechanism clamping plate unit, movement and clock - Google Patents

Hairspring adjusting mechanism, balance wheel and hairspring mechanism clamping plate unit, movement and clock Download PDF

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Publication number
CN113267985A
CN113267985A CN202110125076.7A CN202110125076A CN113267985A CN 113267985 A CN113267985 A CN 113267985A CN 202110125076 A CN202110125076 A CN 202110125076A CN 113267985 A CN113267985 A CN 113267985A
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CN
China
Prior art keywords
outer pile
balance spring
balance
pile
pusher
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Granted
Application number
CN202110125076.7A
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Chinese (zh)
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CN113267985B (en
Inventor
伊东贤吾
川内谷卓磨
藤枝久
森裕一
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Seiko Chronometer Co ltd
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Seiko Chronometer Co ltd
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Publication of CN113267985A publication Critical patent/CN113267985A/en
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    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00Mechanisms for stabilising frequency
    • G04B17/32Component parts or constructional details, e.g. collet, stud, virole or piton
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00Mechanisms for stabilising frequency
    • G04B17/04Oscillators acting by spring tension
    • G04B17/06Oscillators with hairsprings, e.g. balance
    • G04B17/063Balance construction
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00Mechanisms for stabilising frequency
    • G04B17/32Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/325Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B18/00Mechanisms for setting frequency
    • G04B18/02Regulator or adjustment devices; Indexing devices, e.g. raquettes
    • G04B18/026Locking the hair spring in the indexing device, e.g. goupille of the raquette
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B18/00Mechanisms for setting frequency
    • G04B18/04Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat
    • G04B18/06Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat by setting the collet or the stud of a hairspring
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B18/00Mechanisms for setting frequency
    • G04B18/02Regulator or adjustment devices; Indexing devices, e.g. raquettes
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B29/00Frameworks
    • G04B29/02Plates; Bridges; Cocks
    • G04B29/025Cocks

Abstract

The invention provides a balance spring adjusting mechanism capable of easily adjusting a stud in a desired direction, a balance spring mechanism bridge unit, a movement, and a timepiece provided with the balance spring adjusting mechanism. A hairspring adjustment mechanism (7) is provided with: a hairspring (23) formed in a spiral shape; a collet (53) to which the outer end (29) of the balance spring (23) is coupled, movable in a first direction (D1) along a first axis (O) parallel to the central axis (C) of the balance spring (23), and rotatable in a second direction about the first axis (O); an outer peg (37) coupled to the balance spring clamp (6); an outer pile pusher (54) that rotatably holds an outer pile (53) in a first direction and is rotatably supported in a second direction; and an outer pile screw (55) that, when in contact with the outer pile (53), restricts movement of the outer pile (53) relative to the outer pile pusher (54) in the first direction (D1).

Description

Hairspring adjusting mechanism, balance wheel and hairspring mechanism clamping plate unit, movement and clock
Technical Field
The invention relates to a balance spring adjusting mechanism, a balance spring mechanism plate unit, a movement, and a timepiece.
Background
Heretofore, a mechanical timepiece using a balance spring fixed to the center of a balance spring mechanism has been known. In mechanical timepieces, the outer pegs holding the outer ends of the balance springs may differ in size from one another due to, for example, manufacturing tolerances. In such a case, various techniques for adjusting the isochronism of the mechanical timepiece by adjusting the position of the stud have been proposed.
For example, patent document 1 discloses a timepiece oscillation system including a balance spring having an inner end connected to the balance wheel axis, a balance spring outer (stud) holding the outer end of the balance spring, and an adjustment screw attached to the stud and rotating to bias the outer end of the balance spring. According to the technique described in patent document 1, the outer end portion of the balance spring can be arbitrarily bent by moving the adjustment screw in the axial direction by rotating the adjustment screw. This makes it possible to decenter the balance spring with respect to the center of the balance spring, thereby reducing isochronous errors.
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 4976262.
Disclosure of Invention
Problems to be solved by the invention
However, the technique described in patent document 1 has a configuration in which the outer end portion of the balance spring is moved in a planar direction orthogonal to the central axis of the balance spring, but does not have a mechanism for moving the outer end portion of the balance spring in a height direction parallel to the central axis. Therefore, in the case of adjusting the height of the outer end of the balance spring, the shape of the balance spring needs to be changed using a pin or the like, and highly skilled techniques are required. Therefore, a configuration is desired in which the outer pile can be easily moved in a desired direction without depending on the skill or skill of the operator.
Accordingly, an object of the present invention is to provide a balance spring adjusting mechanism capable of easily adjusting a stud in a desired direction, a balance spring bridge unit including the balance spring adjusting mechanism, a movement, and a timepiece.
Means for solving the problems
In order to solve the above problem, a balance spring adjusting mechanism according to an aspect of the present invention includes a spiral balance spring, and a stud coupled to an outer end portion of the balance spring and rotatable in a first direction along a first axis parallel to a central axis of the balance spring and a second direction around the first axis.
According to this configuration, the stud is adjustable in the first and second directions of the balance spring. Thereby, the outer end of the balance spring held by the stud can be rotated in the second direction and moved in the first direction. Thus, the outer pile can be moved in at least two directions, namely, the first direction and the second direction, and the position of the balance spring can be adjusted. Thus, a balance spring adjusting mechanism capable of easily adjusting the outer pile in a desired direction can be provided.
In addition, since the position of the outer pile can be adjusted without depending on the skill or skill of the operator as compared with the conventional art, the operation at the time of manufacturing can be facilitated, and the quality of the product can be maintained in a stable and good state.
Further, the hairspring adjusting mechanism includes: an outer post clamp plate coupled to the balance spring mechanism clamp plate; an outer pile pusher that holds the outer pile movably in the first direction and is supported rotatably in the second direction; and an outer pile fixing member that abuts against the outer pile to restrict movement of the outer pile in the first direction relative to the outer pile pusher.
According to this configuration, the outer pile clamp plate rotatably supports the outer pile pusher which movably holds the outer pile in the first direction. Further, the outer pile fixing member restricts the movement of the outer pile in the first direction with respect to the outer pile pusher. Thus, when the outer pile pusher is rotated in a state where the movement of the outer pile is restricted by the outer pile fixing member, the outer pile rotates integrally with the outer pile pusher with respect to the outer pile clamp plate. Thereby, the outer pile can be moved independently in the first direction and the second direction, respectively, with respect to the outer pile clamping plate. The outer pile is rotatably supported to the outer pile clamp plate via an outer pile pusher so as to be independently movable in the first direction and the second direction, respectively. This enables the outer pile clamp plate to be moved only in the direction in which adjustment is desired, as compared with a case where, for example, the outer pile is directly attached to the outer pile clamp plate and the outer pile is freely moved in the first direction and the second direction with respect to the outer pile clamp plate. Accordingly, by independently adjusting the first direction and the second direction, the adjustment along each direction can be performed more easily, and thus the operability can be improved.
In the balance spring adjusting mechanism, the outer pile clamp plate rotatably supports the outer pile pusher in the second direction.
According to this configuration, the outer pile can be rotatably attached to the outer pile clamp plate via the outer pile pusher. Therefore, the balance spring adjusting mechanism can be formed with a simple configuration, and the outer pile can be moved in the first direction and the second direction.
Further, the hairspring adjusting mechanism includes: a guide plate provided to overlap the outer pile clamp plate and rotatably supporting the outer pile pusher in the second direction; a guide plate pusher provided to overlap the guide plate on a side opposite to the outer pile clamping plate; and an adjusting member capable of adjusting a distance between the outer pile clamping plate and the guide plate pusher. The guide plate has an elongated hole to which the adjustment member is attached, and is elongated in a third direction along a straight line connecting the center axis and the first axis as viewed in the axial direction of the center axis.
According to this configuration, the guide plate rotatably supports the outer pile pusher in a state of being sandwiched by the outer pile clamp plate and the guide plate pusher, and moves in the third direction along the longitudinal direction of the long hole. When the guide plate is moved in the third direction, the outer pile pusher and the outer pile are moved in the third direction together with the guide plate. Thereby, the outer pile can be moved in three directions, i.e. the first direction, the second direction and the third direction, relative to the outer pile clamping plate. Thus, the degree of freedom in adjusting the outer pile can be improved. The adjustment member adjusts the spacing to bring the outer pile clamp plate into proximity with the guide plate pusher to clamp the guide plate by the guide plate pusher and the outer pile clamp plate. The adjusting component is arranged in the long hole of the guide plate. Therefore, the movement of the guide plate in the third direction can be restricted by the adjustment member. Further, by adjusting the interval so that the outer pile clamping plate is separated from the guide plate pusher, the pushing screw can be moved along the elongated hole and the guide plate can be moved in the third direction.
In the balance spring adjusting mechanism, the adjusting member is a pressing screw fastened to the outer pile clamp and pressing the guide plate pressing member toward the outer pile clamp, and the pressing screw is inserted through the elongated hole.
According to this configuration, the guide plate presser is pressed toward the outer pile clamp plate side by tightening the pressing screw, and the guide plate is clamped by the guide plate presser and the outer pile clamp plate. The pressing screw is inserted into a long hole penetrating the guide plate. Therefore, the movement of the guide plate in the third direction can be restricted by tightening the pressing screw. Further, by releasing the fastening of the pressing screw, the pressing screw can be moved in the third direction along the elongated hole and the guide plate.
In the balance spring adjusting mechanism, the outer pile fixing member is an outer pile screw attached to the outer pile pusher.
According to this configuration, when the outer pile pusher is rotated in a state where the outer pile screw is fastened, the outer pile rotates integrally with the outer pile pusher with respect to the outer pile clamp plate. Thereby, the outer pile can be moved independently in the first direction and the second direction with respect to the outer pile clamping plate, respectively. In addition, by fastening the outer pile screw, relative movement of the outer pile pusher and the outer pile can be suppressed. Therefore, the balance spring adjusting mechanism capable of fixing the outer pile can be realized by a simple structure.
In the balance spring adjusting mechanism, the outer pile has a pressing surface that abuts against the outer pile screw, and the balance spring is rotated in the second direction together with the outer pile pressing member in a state where the outer pile screw abuts against the pressing surface.
According to this configuration, since the outer pile has the pressing surface against which the outer pile screw abuts, the outer pile and the outer pile screw can be reliably abutted easily. Further, compared to the case where the outer pile does not have a pressing surface, the outer pile can be suppressed from rotating with respect to the outer pile pressing tool when the outer pile screw is fastened. This can suppress the outer pile from rotating unexpectedly, particularly when the outer pile is intended to move only in the first direction. The outer pile rotates together with the outer pile pusher in a state where the outer pile screw abuts against the pushing surface. This makes it possible to suppress the outer pile from accidentally moving in the first direction, particularly when the outer pile is intended to move only in the rotational direction (second direction). Accordingly, the first and second movable members can be independently moved in the first and second directions, and operability can be improved.
In the balance spring adjusting mechanism, the outer end portion of the balance spring is provided at a position different from the first direction with respect to the spiral balance spring main body.
According to this configuration, it is possible to apply the so-called wind-up balance spring in which the outer end portion is provided at a different position in the first direction with respect to the balance spring main body. Thus, the versatility of the balance spring adjusting mechanism can be improved.
A balance spring mechanism bridge unit according to an aspect of the present invention includes the above-described balance spring adjustment mechanism.
According to this configuration, since the balance spring adjusting mechanism is provided, the outer pile can be moved in the first direction and the second direction of the balance spring. Therefore, it is possible to provide a balance spring bridge unit that includes a balance spring adjusting mechanism capable of easily adjusting the stud in a desired direction and that improves the accuracy of operation.
The balance spring bridge unit includes a balance spring to which the balance spring is attached, and the balance spring unit includes a ring-shaped balance and a balance screw attached to the balance.
According to this configuration, the present invention can be applied to a so-called cockless hairspring system in which the moment of inertia of the balance is adjusted by the amount of tightening of the balance screw (the amount of protrusion in the radial direction of the balance). Therefore, for example, in the non-cocking hairspring system without using a regulator pin, the balance spring bridge unit can be used as a balance spring mechanism bridge unit capable of accurately adjusting the deviation in isochronism.
A movement according to one aspect of the present invention includes the balance spring bridge unit described above.
According to this configuration, it is possible to provide a high-performance movement including a balance spring bridge unit having a balance spring adjusting mechanism capable of easily adjusting a stud in a desired direction.
A timepiece according to an aspect of the present invention includes the movement.
According to this configuration, a timepiece includes the movement, and the movement includes the balance spring adjusting mechanism. Thus, by moving the outer peg in the first and second directions of the balance spring, the isochronous shift can be adjusted.
Therefore, the timepiece can be provided with a balance spring adjusting mechanism capable of easily adjusting the stud in each of the first direction and the second direction, and can easily adjust the deviation in isochronism.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, it is possible to provide a balance spring adjusting mechanism capable of easily adjusting a stud in a desired direction, a balance spring bridge unit including the balance spring adjusting mechanism, a movement, and a timepiece.
Drawings
Fig. 1 is an external view of a timepiece according to a first embodiment.
Fig. 2 is a plan view of the movement according to the first embodiment as viewed from the front side.
Fig. 3 is a top view of the balance spring bridge unit according to the first embodiment as viewed from the front side.
Fig. 4 is a perspective view of the balance spring bridge unit according to the first embodiment.
Fig. 5 is a sectional view taken along line V-V of fig. 3.
Fig. 6 is a perspective view of a balance spring bridge unit according to a second embodiment.
Fig. 7 is a top view of the balance spring bridge unit according to the second embodiment as viewed from the front side.
Fig. 8 is a plan view of the balance spring clamping unit of fig. 7, which is not shown in the drawings.
Fig. 9 is a sectional view taken along line IX-IX of fig. 7.
Fig. 10 is a sectional view taken along line X-X of fig. 7.
Fig. 11 is a top view of the balance spring bridge unit according to the third embodiment as viewed from the front side.
Fig. 12 is a sectional view taken along line XII-XII of fig. 11.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(first embodiment)
(watch)
Fig. 1 is an external view of a timepiece 1 according to a first embodiment. The timepiece 1 is configured by incorporating a movement 2, a dial 13 having scales for displaying time-related information, and various hands (an hour hand 14, a minute hand 15, and a second hand 16) in a timepiece case 12 having a case cover (not shown) and a glass 11.
(movement)
Fig. 2 is a plan view of the movement 2 according to the first embodiment as viewed from the front side. In fig. 2, for easy viewing of the drawings, the timepiece components constituting the movement 2 are partially omitted from illustration, and the timepiece components are simplified and illustrated. In the following description, the glass 11 side (dial 13 side) of the timepiece case 12 (see fig. 1) is referred to as the "back side" of the movement 2, and the case lid side (opposite side to the dial 13) is referred to as the "front side" of the movement 2, with respect to the main plate 17 constituting the base plate of the movement 2.
The movement 2 includes a main plate 17, a not-shown table-side gear train including a barrel wheel, a second wheel, a third wheel, and a fourth wheel, and an escape speed governor 3 for controlling rotation of the table-side gear train. The illustrated movement 2 is a movement for an automatic winding-up timepiece equipped with a rotary hammer. However, the present invention is not limited to this case, and a movement for a manual winding-up timepiece using the stem 18 may be used. The second hand 16 shown in fig. 1 rotates based on the rotation of the fourth wheel, and rotates at a rotational speed regulated by the escape governor 3, i.e., one minute rotation. The minute hand 15 rotates based on the rotation of the second wheel or the rotation of the minute wheel rotating along with the rotation of the second wheel, and rotates at a rotation speed regulated by the escape governor 3, that is, one revolution per hour. The hour hand 14 rotates via the straddle wheel based on the rotation of the hour wheel that rotates in conjunction with the rotation of the second wheel, and rotates at a rotational speed regulated by the escape governor 3, i.e., one rotation for 12 hours or 24 hours.
The escape speed regulator 3 includes an escape wheel and a pallet, not shown, that mesh with the fourth-numbered wheel, and a balance spring bridge unit 4. The pallet escapement wheel escapements. The balance spring bridge unit 4 includes a balance spring 5 that operates regularly at a constant cycle.
(balance spring mechanism plate unit)
Fig. 3 is a top view of the balance spring bridge unit 4 according to the first embodiment as viewed from the front side. Fig. 4 is a perspective view of the balance spring bridge unit 4 according to the first embodiment. Fig. 5 is a sectional view taken along line V-V of fig. 3. As shown in fig. 3 to 5, the balance spring bridge unit 4 includes a balance spring 5, a balance spring bridge 6, and a balance spring adjusting mechanism 7.
As shown in fig. 3 and 5, the balance-spring mechanism 5 includes a balance staff 21, a balance 22, and a balance spring 23. The pendulum shaft 21 is freely rotatable about the central axis C. The balance staff 21 is rotatably supported by a balance spring bridge 6 described in detail below via a bearing 36. In the following description, a direction along the center axis C of the swing shaft 21 is sometimes referred to as an axial direction, a direction perpendicular to the center axis C is sometimes referred to as a radial direction, and a direction revolving around the center axis C is sometimes referred to as a circumferential direction.
The balance 22 includes a boss portion 24 fixed to the balance shaft 21 by press-fitting or the like, a ring-shaped edge portion 25 surrounding the boss portion 24 from the radially outer side, and a coupling portion 26 coupling between the boss portion 24 and the edge portion 25. A balance screw 27 is attached to the edge portion 25 of the balance 22. In the present embodiment, four balance screws 27 are provided at equal intervals in the circumferential direction of the balance 22.
The balance spring 23 is disposed between the balance staff 21 and the balance 22. Hairspring 23 is a horizontal hairspring wound along an archimedean curve and formed into a spiral shape when viewed in the axial direction. Inner end 28 of balance spring 23 is coupled to balance staff 21 via a collet 31 (see fig. 5). Outer end 29 of balance spring 23 is coupled to a stud 53 of balance spring adjustment mechanism 7, described in detail below. The outer end portion 29 of the balance spring 23 is arranged at a position different in the axial direction from the spiral-shaped balance spring main body 30 and the inner end portion 28. Specifically, outer end 29 of hairspring 23 is located on the front side in the axial direction (on the side of balance spring bridge 6 described later) than hairspring main body 30 and inner end 28.
The balance staff 21 rotates forward and backward around the center axis C with a certain period of oscillation by the power transmitted from the balance spring 23. One end 21a (front end) of the balance shaft 21 in the axial direction is supported by the balance spring bridge 6 via a bearing 36, and the other end 21b (back end) is supported by a bearing (not shown) formed on the main plate 17 (see fig. 2). A cylindrical rocker 19 (see fig. 5) coupled to the pallet fork is externally fitted over the other end 21b of the rocker shaft 21.
As shown in fig. 4, the balance spring bridge 6 is arranged on the front side of the balance spring 5 in the axial direction. Balance spring bridge 6 has a mounting base 35, a bearing 36 and an outer peg bridge 37. The mount base 35 extends from the center axis C toward both sides in the radial direction as viewed from the axial direction. The mounting base portion 35 is formed in a flat plate shape with the axial direction as the thickness direction. The shape of both ends of the attachment base portion 35 in the extending direction is formed in an arc shape matching the shape of the timepiece case 12 (see also fig. 2). A plurality of mounting holes 38 penetrating in the axial direction are formed in the mounting base portion 35. The balance-spring bridge unit 4 is fixed to the main plate 17 via fixing screws (not shown) inserted through the mounting holes 38, respectively (see fig. 2). The mounting base 35 has a central hole 39 formed on the same shaft as the central axis C. As shown in fig. 5, a portion of the mounting base 35, which forms the outer peripheral portion of the central hole 39, serves as a bearing cylinder portion 40. The bearing cylinder portion 40 is formed one step lower on the back side of the mounting base portion 35.
The bearing 36 is a so-called shock-proof bearing, and includes a bearing frame 43, a drill 44, and a back-up drill 45. The bearing frame 43 is press-fitted into the bearing cylinder portion 40 from the front side in the axial direction. Thus, the bearing frame 43 is disposed on the same axis as the center axis C and fixed to the balance spring bridge 6. The hole drill 44 is mounted in the bearing frame 43. The drill 44 rotatably supports one end 21a of the pendulum shaft 21. The support drill 45 is disposed so as to overlap the hole drill 44, and supports the one end 21a of the swing shaft 21 from the front side. A not-shown support drill pressing spring for biasing the support drill 45 toward the swing shaft 21 is disposed so as to overlap the support drill 45. The structure of the bearing 36 is an example, and if the pendulum shaft 21 can be rotatably supported, the structure is not limited to the above structure.
As shown in fig. 5, the outer pile clamp plate 37 is fitted to the bearing tube 40 of the attachment base 35 via a seat portion 41 provided on the outer peripheral portion of the bearing tube 40. As shown in fig. 4, the outer peg board 37 has a grip portion 46 and an outer peg arm 47 coupled to the grip portion 46. The grip portion 46 is formed in a C shape when viewed from a plane in the axial direction. The grip portion 46 slides with respect to the bearing cylinder portion 40 when a predetermined rotational torque is applied. Thereby, the outer pile press plate 37 can rotate about the central axis C.
The outer leg 47 is provided further outward in the radial direction than the grip portion 46. Specifically, the outer pile arm 47 is formed in an L-shape by a base portion 48 extending from the outer peripheral portion of the grip portion 46 toward the outside in the radial direction, and an extension portion 49 extending from the outer diameter-side end portion of the base portion 48 toward one side in the circumferential direction. A U-shaped groove 50 that is open at one side in the circumferential direction is formed by the grip portion 46 and the outer leg 47 as viewed in the axial direction.
(hairspring adjusting mechanism)
The balance spring adjusting mechanism 7 includes the balance spring 23, the outer pile 53, the outer pile presser 54, and the outer pile screw 55 (outer pile fixing member of the claims). As shown in fig. 5, stud 53 holds outer end 29 of balance spring 23. The outer pile 53 is formed in a cylindrical shape centered on a first axis O parallel to the central axis C. The outer pile 53 is disposed in the U-shaped groove 50 formed by the grip portion 46 and the outer pile arm 47. The outer pile 53 has a mounting surface 56 and a pressing surface 57, each of which has a flat outer peripheral portion. The mounting surface 56 is provided at an end portion of the outer pile 53 on the back side in the first direction D1. Outer end 29 of balance spring 23 is mounted to mounting surface 56. The pressing surface 57 is provided on the front side of the first direction D1 with respect to the mounting surface 56.
The outer pile pusher 54 is supported by the outer pile clamping plate 37. Outer pile pusher 54 is formed in a cylindrical shape centered on first axis O. A step portion extending in the circumferential direction of the outer peripheral portion is formed on the outer peripheral portion of the outer pile pusher 54. The grip portion 46 and the outer peg arm 47 enter the step. Thus, outer pile pusher 54 is gripped by grip 46 and outer pile arm 47. The outer pile 53 is inserted into the inner peripheral portion of the outer pile presser 54. Thus, the outer pile 53 is movably held in the first direction D1 relative to the outer pile pusher 54. The outer pile pusher 54 is supported rotatably with respect to the outer pile clamp plate 37 in a second direction D2 (see fig. 3) about the first axis O in a state of being clamped by the outer pile clamp plate 37. Thereby, the outer pile 53 held by the outer pile clamp plate 37 is able to move in the first direction D1 relative to the outer pile pusher 54 and rotate in the second direction D2 together with the outer pile pusher 54.
As shown in fig. 4, on the front end surface of the outer pile pusher 54 in the axial direction, a recess 58 into which a tool such as a driver can be inserted is formed. The groove 58 is recessed from the end surface on the front side toward the back side. The groove 58 is formed in a straight line passing through the first axis O as viewed in the axial direction. By turning the tool by inserting the tool into the recess 58, the outer pile pusher 54 is rotated in the second direction D2. As shown in fig. 5, a screw hole 59 is formed in the outer peripheral portion of the outer pile pusher 54. The threaded hole 59 is formed in a radial direction of the first axis O. The screw hole 59 communicates the inner circumferential portion and the outer circumferential portion of the outer pile pusher 54. A female screw is formed on the inner periphery of the screw hole 59.
The outer pile screws 55 are inserted into threaded holes 59 of the outer pile pusher 54. The outer pile screw 55 is screw-engaged with the screw hole 59 to be movable in a radial direction of the first axis O. The tip portion 55a of the outer pile screw 55 on the first axis O side abuts against a pressing surface 57 formed on the outer pile 53. The outer pile screw 55 abuts against the pressing surface 57 of the outer pile 53, and restricts the movement of the outer pile 53 in the first direction D1 with respect to the outer pile pressing member 54.
Specifically, when the outer pile screw 55 is rotated in the fastening direction and the tip end portion 55a comes into contact with the pressing surface 57 of the outer pile 53, the outer pile 53 is pressed against the outer pile presser 54. Thereby, the relative movement of the outer pile pusher 54 and the outer pile 53 is restricted. In this state and with the outer pile pusher 54 rotated in the second direction D2 relative to the outer pile clamp plate 37, the outer pile 53 rotates in the second direction D2 together with the outer pile pusher 54. On the other hand, when the outer pile screw 55 is turned in the release direction and the distal end portion 55a is separated from the pressing surface 57 of the outer pile 53, the outer pile 53 can move in the first direction D1 with respect to the outer pile presser 54.
(action, Effect)
Next, the operation and effects of the balance spring adjusting mechanism 7, the balance spring bridge unit 4, the movement 2, and the timepiece 1 will be described. According to balance spring adjustment mechanism 7 of the present embodiment, stud 53 can be adjusted in first direction D1 and second direction D2 of balance spring 23. Thereby, outer end 29 of balance spring 23 held by stud 53 can be rotated in second direction D2 and moved in first direction D1. Therefore, balance spring holder 53 can be moved at least in both of first direction D1 and second direction D2, and the position of balance spring 23 can be adjusted. Thus, it is possible to provide balance spring adjusting mechanism 7 capable of easily adjusting outer pile 53 in a desired direction.
Further, as compared with the prior art, since the position of the outer pile 53 can be adjusted without depending on the skill or skill of the operator, the operability during the manufacture can be facilitated, and the quality of the product can be maintained in a stable and good state.
The outer pile clamp 37 rotatably supports the outer pile pusher 54 and the outer pile pusher 54 movably holds the outer pile 53 in the first direction D1. Further, the outer pile screw 55 (outer pile fixing member of the claims) restricts the movement of the outer pile 53 in the first direction D1 with respect to the outer pile pusher 54. Thus, when the outer pile presser 54 is rotated in a state where the movement of the outer pile 53 is restricted by the outer pile screw 55, the outer pile 53 rotates integrally with the outer pile presser 54 with respect to the outer pile clamp plate 37. Thus, the outer pile 53 can be moved independently in the first direction D1 and the second direction D2, respectively, with respect to the outer pile clamping plate 37.
The outer pile 53 is rotatably supported to the outer pile clamp plate 37 via an outer pile pusher 54 so as to be independently movable in the first direction D1 and the second direction D2, respectively. Thus, for example, compared to the case where the outer pile 53 is directly attached to the outer pile clamp plate 37 and the outer pile 53 is freely movable in the first direction D1 and the second direction D2 with respect to the outer pile clamp plate 37, the outer pile clamp plate 37 can be moved only in the direction in which adjustment is desired. Accordingly, by independently adjusting the first direction D1 and the second direction D2, the adjustment along each direction can be performed more easily, and thus the operability can be improved.
Collet pusher 54 is rotatably supported in second direction D2 with respect to collet cleat 37 coupled to balance spring mechanism cleat 6. Thereby, the outer pile 53 can be rotatably attached to the outer pile clamp plate 37 via the outer pile pusher 54. Accordingly, the balance spring adjusting mechanism 7 having a simple configuration can be configured such that the outer pile 53 can move in the first direction D1 and the second direction D2.
In the present embodiment, the outer pile screw 55 is used as an outer pile fixing member. Therefore, when the outer pile presser 54 is rotated in a state where the outer pile screw 55 is fastened, the outer pile 53 rotates integrally with the outer pile presser 54 with respect to the outer pile clamp plate 37. Thus, the outer pile 53 can be moved independently in the first direction D1 and the second direction D2, respectively, with respect to the outer pile clamping plate 37. In addition, an outer pile screw 55 is attached to the outer pile pusher 54. Thereby, by fastening the outer pile screw 55, the relative movement of the outer pile pusher 54 and the outer pile 53 can be suppressed. Therefore, the balance spring adjusting mechanism 7 capable of fixing the outer pile 53 can be obtained with a simple configuration.
Since the outer pile 53 has the pressing surface 57 against which the outer pile screw 55 abuts, the outer pile 53 and the outer pile screw 55 can be easily reliably abutted. Further, compared to the case where the outer pile 53 does not have the pressing surface 57, the outer pile 53 can be suppressed from rotating with respect to the outer pile presser 54 when the outer pile screw 55 is fastened. This can suppress the outer pile 53 from rotating unexpectedly, particularly when the outer pile 53 is intended to move only in the first direction D1. Further, the outer pile 53 rotates together with the outer pile pusher 54 in a state where the outer pile screw 55 is in contact with the pushing surface 57. This can suppress the outer pile 53 from accidentally moving in the first direction D1, particularly when the outer pile 53 is intended to move only in the rotational direction (the second direction D2). Accordingly, the first direction D1 and the second direction D2 can be independently moved, and operability can be improved.
The outer end 29 of balance spring 23 is set at a different position in first direction D1 (axial direction) with respect to balance spring body 30. This makes it possible to apply the so-called wind-up balance spring in which the position of the outer end portion 29 is different from that of the balance spring main body 30. Thus, the versatility of hairspring adjusting mechanism 7 can be improved.
According to the balance spring cleat unit 4 of the present embodiment, since the balance spring adjusting mechanism 7 described above is provided, the collet 53 can be moved in the first direction D1 and the second direction D2 of the balance spring 23. Therefore, the balance spring clamping plate unit 4 including the balance spring adjusting mechanism 7 capable of easily adjusting the stud 53 in a desired direction and improving the accuracy of the operation can be provided.
Balance screw 27 is provided on balance 22. This makes it possible to apply the so-called cockless hairspring system in which the moment of inertia of the balance 22 is adjusted by the amount of tightening of the balance screw 27 (the amount of projection in the radial direction of the balance 22). Therefore, for example, in the case of the cocking-free hairspring system that does not use a regulator pin, the balance-spring-mechanism bridge unit 4 can be used to accurately adjust the isochronous shift.
According to the movement 2 of the present embodiment, it is possible to provide a high-performance movement 2 including the balance spring bridge unit 4, and the balance spring bridge unit 4 includes the balance spring adjusting mechanism 7 capable of easily adjusting the outer pile 53 in a desired direction.
According to the timepiece 1 of the present embodiment, the timepiece 1 includes the above-described movement 2, and the movement 2 includes the above-described balance spring adjusting mechanism 7. Thus, by moving outer peg 53 in first direction D1 and second direction D2 of balance spring 23, the deviation in isochronism can be adjusted. Therefore, it is possible to provide timepiece 1 that includes balance spring adjusting mechanism 7 capable of easily adjusting outer pile 53 in first direction D1 and second direction D2, and that can easily adjust the deviation in isochronism.
(second embodiment)
Next, a second embodiment according to the present invention will be explained. Fig. 6 is a perspective view of the balance spring bridge unit 4 according to the second embodiment. Fig. 7 is a top view of the balance spring bridge unit 4 according to the second embodiment as viewed from the front side. Fig. 8 is a plan view of the balance spring clamping unit 4 in which the illustration of the guide plate presser 261 in fig. 7 is omitted. Fig. 9 is a sectional view taken along line IX-IX of fig. 7. Fig. 10 is a sectional view taken along line X-X of fig. 7. The second embodiment differs from the first embodiment described above in that the outer pile 53 can move in a third direction D3 in the radial direction of the center axis C in addition to the first direction D1 and the second direction D2. In the second embodiment, the balance 22 is formed without the balance screw 27 (see fig. 4).
As shown in fig. 6 and 7, the balance spring adjusting mechanism 7 of the second embodiment includes a balance spring 223, an outer pile 53, an outer pile presser 54, a guide plate 260, a guide plate presser 261, and a pressing screw 262 (an adjusting member according to the claims). The configuration of the outer pile 53 and the outer pile pusher 54 in the second embodiment is the same as the configuration of the outer pile 53 and the outer pile pusher 54 in the first embodiment described above. Therefore, in the second embodiment, only the points different from the first embodiment will be described, and the same configurations as those in the first embodiment will not be described in detail.
In the second embodiment, the outer end 29 of the balance spring 223 is disposed at the same position in the axial direction as the balance spring main body 30. The outer end 29 of the balance spring 223 is an arcuate portion 263 that bulges outward in the radial direction. Outer pile pusher 54 is coupled to outer pile clamp plate 37 via guide plates 260 (see fig. 10) described later.
As shown in fig. 6 and 8, the outer pile clamping plate 37 of the second embodiment has outer pile arms 247 separated in the circumferential direction after extending toward the outside in the radial direction from the grip portion 46. The outer pile clamp 37 has a U-shaped groove 250 formed by the outer pile arm 247 and opened outward in the radial direction as viewed in the axial direction. As shown in fig. 8, the outer pile arms 247 respectively have fastening holes 264. The fastening holes 264 are circular holes that penetrate the outer pile arms 247 in the axial direction. A female screw is formed at an inner peripheral portion of the fastening hole 264.
As shown in fig. 8 and 9, guide plate 260 is arranged to overlap on the front side with respect to outer pile arm 247 of outer pile clamping plate 37. The guide plate 260 is formed in an elliptical plate shape that is long in the circumferential direction as viewed from the axial direction. The guide plate 260 has a support concave portion 265 and an elongated hole 266. The support concave portion 265 is provided at an end portion of the guide plate 260 facing the outside in the radial direction. The support concave portion 265 is recessed from the outer side toward the inner side in the radial direction. The support concave portion 265 is provided at a position corresponding to the U-shaped groove 250 of the outer pile clamp 37 when viewed in the axial direction. The support recess 265 rotatably supports the outer pile pusher 54 in the second direction D2 (refer to fig. 7). As shown in fig. 8, the long holes 266 are provided in a pair on both sides in the circumferential direction, sandwiching the support concave portion 265. The long hole 266 penetrates the guide plate 260 in the axial direction. The elongated hole 266 is provided at a position corresponding to the fastening hole 264 of the outer pile clamp plate 37 as viewed in the axial direction. The pair of long holes 266 is formed in the longitudinal direction in a third direction D3 along a straight line L connecting the center axis C and the first axis O when viewed in the axial direction.
As shown in fig. 9, the guide plate pusher 261 is disposed to overlap with respect to the guide plate 260 on the side opposite to the outer pile clamping plate 37. In other words, the guide plate 260 is sandwiched by the outer pile clamping plate 37 and the guide plate pusher 261 from both sides in the axial direction. As shown in fig. 7, the outer shape of the guide plate presser 261 viewed from the axial direction is the same as the outer shape of the guide plate 260 viewed from the axial direction. The guide plate pusher 261 has a through hole 267 at a position corresponding to the fastening hole 264 of the outer pile clamp 37, as viewed in the axial direction. The through hole 267 penetrates the guide plate pusher 261 in the axial direction.
As shown in fig. 9, the pressing screw 262 is inserted into the fastening hole 264, the elongated hole 266, and the through hole 267 in a state where the outer pile clamp 37, the guide plate 260, and the guide plate presser 261 are overlapped. The thrust screw 262 adjusts the spacing of the outer pile clamp plate 37 from the guide plate thrust 261. Specifically, the pressing screw 262 is inserted from the guide plate pressing member 261 side (the surface side), fastened to the female thread formed on the outer pile clamping plate 37. Thereby, the pressing screw 262 jointly fastens the outer pile clamping plate 37, the guide plate 260 and the guide plate pressing member 261.
In the balance spring adjusting mechanism 7 thus formed, when the pressing screw 262 is released, the guide plate 260 is movable in the third direction D3, which is the longitudinal direction of the long hole 266, with respect to the outer pile clamp plate 37 and the guide plate pressing member 261. If the guide plate 260 is moved in the third direction D3, the outer pile 53 is moved in the third direction D3 together with the outer pile pusher 54 coupled to the guide plate 260. When the pressing screw 262 is rotated in the tightening direction after the guide plate 260 is moved to a desired position in the third direction D3, the guide plate pressing piece 261 is moved toward the outer pile clamp 37 side by the axial force of the pressing screw 262. Thereby, the guide plate 260 is pressed from both sides in the axial direction by the outer pile clamping plate 37 and the guide plate presser 261, and the movement in the third direction D3 is restricted.
Here, in addition to the above-described balance spring adjusting mechanism 7, the shape of the balance spring bridge 6 in the second embodiment is different from that in the first embodiment. Specifically, in the second embodiment, the mounting base portion 35 of the balance spring mechanism 6 extends in one direction from the center axis C as viewed from the axial direction. The mounting base portion 35 is formed in an arc shape curved in the circumferential direction as going outward in the radial direction from the center axis C.
According to the second embodiment, the guide plate 260 rotatably supports the outer pile pusher 54 in a state of being sandwiched by the outer pile clamping plate 37 and the guide plate pusher 261, and moves in the third direction D3 along the length direction of the long hole 266. In addition, the pressing screw 262 is used as an adjusting member capable of adjusting the interval between the outer pile clamping plate 37 and the guide plate presser 261. When the guide plate 260 is moved in the third direction D3, the outer pile pusher 54 and the outer pile 53 move in the third direction D3 together with the guide plate 260. Thereby, the outer pile 53 can be moved in three directions of the first direction D1, the second direction D2, and the third direction D3 with respect to the outer pile clamp plate 37. Thus, the degree of freedom in adjustment of the outer pile 53 can be improved. The thrust screw 262 (an adjusting member of the claims) adjusts the interval to bring the outer pile clamping plate 37 close to the guide plate thrust 261, thereby clamping the guide plate 260 by the guide plate thrust 261 and the outer pile clamping plate 37. Specifically, the thrust screw 262 is tightened to urge the guide plate thrust member toward the outer pile clamp plate side, clamping the guide plate by the guide plate thrust member and the outer pile clamp plate. The pressing screw 262 is inserted into an elongated hole 266 penetrating the guide plate 260. Therefore, the movement of the guide plate 260 in the third direction D3 can be restricted by tightening the pressing screw 262. In addition, by adjusting the interval to separate the outer pile clamping plate 37 and the guide plate pusher 261, that is, releasing the fastening of the pushing screw 262, it is possible to move the pushing screw 262 along the long hole 266 and the guide plate 260 in the third direction D3.
(third embodiment)
Next, a third embodiment according to the present invention will be explained. Fig. 11 is a top view of the balance spring bridge unit 4 according to the third embodiment as viewed from the front side. Fig. 12 is a sectional view taken along line XII-XII of fig. 11. In the third embodiment, the balance spring clamp unit 4 is different from the first embodiment in that it includes the regulator pin 371.
As shown in fig. 11 and 12, in the third embodiment, the outer end portion 29 of the balance spring 323 is arranged at the same position in the axial direction as the balance spring main body 30. The outer end 29 of the balance spring 323 is formed as an arc 363 bulging outward in the radial direction. The balance spring mechanism bridge unit 4 of the third embodiment has a fine movement regulator pin lever 370 and a regulator pin 371.
The inching index lever 370 is rotatably mounted about the center axis C with respect to the bearing frame 43 (see fig. 12). The inching index lever 370 includes: a fitting portion 372 fitted to the bearing frame 43; and an engaging fork 373 extending radially outward from the fitting portion 372 and formed in a two-strand shape that branches in the circumferential direction. The adjustment pin 374 is disposed inside the engagement fork 373. As shown in fig. 12, an adjustment pin 374 is rotatably fitted inside a bearing bush 375 provided on the balance spring bridge 6. The adjustment pin 374 includes a shaft portion 376 coaxial with the bearing bush 375 and a head portion 377 formed integrally with a front end portion of the shaft portion 376 and eccentric with respect to the shaft portion 376. The head 377 slidably contacts the inner surface of the snap prongs 373. Accordingly, by rotating adjustment pin 374 with respect to bearing bush 375, fine movement regulator lever 370 can be rotated as a whole about center axis C of balance spring mechanism 5.
As shown in fig. 11, index 371 includes index body 378, hairspring rod 379, and hairspring clamp 380. The fast and slow pins 378 can rotate about the central axis C. The fast-slow needle body 378 has a base portion 381 surrounding the fitting 372 of the inching fast-slow needle lever 370 from the outside in the radial direction, and a fast-slow needle arm 382 extending from the base portion 381 to the outside in the radial direction. A hairspring rod 379 and hairspring clamp plate 380 are mounted to the fast and slow needle arm 382. The balance spring rod 379 and the balance spring clamp plate 380 are disposed so as to face each other in the radial direction with the arc portion 363 of the balance spring 323 interposed therebetween. Specifically, the hairspring rods 379 are located more inward in the radial direction than the arcs 363. The balance spring clamp plate 380 is located more outward in the radial direction than the arc 363. The end portions of balance spring rod 379 and balance spring clamp plate 380 located on the back side protrude downward beyond arc 363 of balance spring 323. The spacing of the hairspring rod 379 from the hairspring clamp plate 380 can be adjusted. Thereby adjusting the amplitude of balance spring 323.
In the third embodiment, the outer pile clamping plate 37 includes a grip portion 46 (see fig. 3) fitted to the bearing tube portion 40 (see fig. 5) and two outer pile arms 347 extending radially outward from the grip portion 46 and branching in the circumferential direction. The balance spring adjusting mechanism 7 is supported between the two strand-shaped outer pile arms 347 so as to be rotatable with respect to the outer pile arms 347. The configuration of the balance spring adjustment mechanism 7 in the third embodiment is the same as that of the balance spring adjustment mechanism 7 in the first embodiment, and therefore detailed description thereof is omitted below.
According to the third embodiment, the above-described hairspring adjusting mechanism 7 can be applied to the balance spring cleat unit 4 having the regulator pin 371. Therefore, in addition to the same operations and effects as those of the first embodiment, the degree of freedom of adjustment and the accuracy of adjustment can be further improved by adjusting the index pin 371.
The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the following configuration is adopted: in order to restrict the movement of the outer pile 53 in the first direction D1 with respect to the outer pile pusher 54, an outer pile screw 55 is used as the outer pile fixing member, but is not limited thereto. The following constitution may also be possible: movement of the outer peg 53 in the first direction D1 is limited, for example, by inserting a pin in place of the outer peg screw 55.
Similarly, although the second embodiment is configured to use the pressing screw 262 as the adjusting member, a member other than a screw may be used to adjust the distance between the outer pile clamping plate 37 and the guide plate pressing member 261. The shape of the outer pile clamp plate 37 that rotatably holds the outer pile pusher 54 is not limited to the above-described shape. For example, an annular hole may be formed to penetrate the outer pile arm 47 in the axial direction, and the outer pile pusher 54 may be inserted inside the hole. The shape of the mount base 35 in the balance spring bridge 6 is not limited to the shapes of the first to third embodiments described above.
In addition, the components in the above embodiments may be replaced with well-known components without departing from the scope of the present invention, and the above modifications may be appropriately combined.
Description of the symbols
1 clock and watch
2 movement
4 balance wheel hairspring mechanism splint unit
5 balance spring mechanism
6 balance wheel hairspring mechanism splint
7 balance spring adjusting mechanism
22 balance wheel
23. 223, 323 hairspring
27 balance screw
29 outer end of the pipe
30 balance spring main body
37 outer pile clamping plate
53 outer pile
54 external pile pushing element
55 outer pile screw (outer pile fixed part)
57 pressing surface
260 guide plate
261 guide plate pushing piece
262 pushing screw (adjusting part)
266 slotted hole
C central axis
O first axis
D1 first direction
D2 second direction
D3 third direction.

Claims (12)

1. A hairspring adjusting mechanism is provided with:
a hairspring formed in a spiral shape; and
an outer peg to which an outer end of the balance spring is coupled, movable in a first direction along a first axis parallel to a central axis of the balance spring, and rotatable in a second direction about the first axis.
2. The balance spring adjustment mechanism according to claim 1, comprising:
an outer post clamp plate coupled to the balance spring mechanism clamp plate;
an outer pile pusher holding the outer pile movably in the first direction and rotatably supported in the second direction; and
and an outer pile fixing member that, by coming into contact with the outer pile, restricts movement of the outer pile in the first direction relative to the outer pile pusher.
3. The balance spring adjustment mechanism according to claim 2, wherein the outer pile clamp plate rotatably supports the outer pile pusher in the second direction.
4. The balance spring adjustment mechanism according to claim 2, comprising:
a guide plate provided in an overlapping manner on the outer pile clamping plate and rotatably supporting the outer pile pusher in the second direction;
a guide plate pusher disposed in overlapping relation to the guide plate on a side opposite the outer pile clamping plate; and
an adjusting member capable of adjusting a gap between the outer pile clamping plate and the guide plate pusher,
the guide plate has an elongated hole, to which the adjustment member is attached, that is elongated in a third direction along a straight line joining the central axis and the first axis as viewed in the axial direction of the central axis.
5. The balance spring adjusting mechanism according to claim 4, wherein said adjusting member is a pushing screw fastened to the aforementioned outer pile clamp plate and pushing said guide plate pusher toward the outer pile clamp plate side,
the pressing screw is inserted through the elongated hole.
6. A balance spring adjustment mechanism according to any one of claims 2 to 5, wherein the outer pile fixing member is an outer pile screw mounted to the outer pile pusher.
7. A balance spring adjustment mechanism according to claim 6,
the outer pile has a pressing surface abutting against the outer pile screw,
and under the state that the outer pile screw is abutted against the pushing surface, the outer pile pushing piece and the outer pile pushing piece rotate in the second direction.
8. A balance spring adjustment mechanism according to any of claims 1 to 7, wherein the outer end of the balance spring is provided at a different position in the first direction relative to the balance spring body formed into the spiral.
9. A balance-spring-mechanism bridge unit provided with the balance-spring adjusting mechanism according to any one of claims 1 to 8.
10. The balance spring bridge unit according to claim 9, comprising a balance spring to which the balance spring is attached,
the balance spring mechanism includes:
a ring-shaped balance wheel; and
a balance screw mounted to the balance wheel.
11. A movement provided with the balance spring bridge unit according to claim 9 or 10.
12. A timepiece provided with the movement of claim 11.
CN202110125076.7A 2020-01-29 2021-01-29 Hairspring adjusting mechanism, balance hairspring mechanism clamping plate unit, movement and clock Active CN113267985B (en)

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EP4286962A1 (en) * 2022-06-02 2023-12-06 ETA SA Manufacture Horlogère Suisse Timepiece regulating member comprising a regulator assembly provided with locking means

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CH609515GA3 (en) * 1976-09-14 1979-03-15 Regulator work for timepiece with balance and hairspring
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