JP2016133312A - Hairspring adjustment mechanism, movement, and timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hairspring adjustment mechanism, movement, and timepiece capable of improving workability.SOLUTION: The hairspring adjustment mechanism includes: a regulator pin 25 that is rotatable about a central axis O1 of a balance 15 with a hairspring and comes into contact with a hairspring 23 of the balance 15 with the hairspring; a first adjustment member 71 that has a first assemblage part 78 to which a tool is assembled and, with a rotating operation at a prescribed angle, rotates the regulator pin 25 at a first pitch; and a second adjustment member 72 that has a second assemblage part 85 to which a tool is assembled and, with a rotating operation at a prescribed angle, rotates the regulator pin 25 at a second pitch smaller than the first pitch. Directions of assembling the tool to the first assemblage part 78 and of assembling the tool to the second assemblage part 85 are defined as a same direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a hairspring adjustment mechanism, a movement, and a timepiece.

  In the balance of a mechanical timepiece, it is important that the vibration period is set within a predetermined value. This is because the rate of the mechanical timepiece (timepiece delay, degree of advance) changes when the vibration period deviates from the specified value.

  As a method for adjusting the rate, there is known a method of adjusting the effective length of the balance spring with the inner end portion fixed to the balance of the balance with the balance and the outer end portion fixed to the balance with a gentle needle. The slow / fast needle includes a slow / fast needle body that is rotatable around the center axis of the balance with hair, and a beard rest and a whisker bar held by the slow / fast needle body. The hair support is arranged on the outer side in the radial direction with respect to the hairspring, and the whiskers are arranged on the inner side in the radial direction with respect to the hairspring. The hairspring oscillates in a radial direction between the hair support and the whisker rod when the balance spring periodically rotates forward and backward.

  When adjusting the rate using a slow / fast needle, rotate the slow / fast needle around the center axis of the balance and move the position of the hair support and the hairpin in the length direction of the hairspring (the circumferential direction of the hairspring). . This makes it possible to adjust the effective length when the hairspring vibrates (the length between the inner end of the hairspring and the contact portion between the hairspring and the hairpin) and adjust the rate. The

By the way, when adjusting the rate, the slow and quick hands are rotated at a relatively large pitch (rotation angle), and the rough adjustment for roughly adjusting the position of the beard and the whiskers, and the slow and quick needle at a smaller pitch than the coarse adjustment. There are cases where fine adjustment is performed to rotate and finely adjust the position of the beard rest and the beard bar. For example, Patent Document 1 below discloses a configuration including a fine movement lever that is connected to a slow and rapid needle body and rotates the slow and rapid needle at a predetermined pitch (rotation angle) in accordance with a rotation operation.
In the configuration of Patent Document 1, when coarse adjustment is performed first, a tool (for example, tweezers or the like) is brought into contact with the slow and quick needle body, and the slow and quick needle body is rotated by pressing the slow and quick needle body through the tool. Can be considered. When fine adjustment is performed, a tool (for example, a driver) is assembled to the fine movement lever, and the fine movement lever is rotated through the tool, thereby rotating the slow / fast needle.

JP 2006-234528 A

  However, in the configuration of Patent Document 1 described above, since the tool assembling method, the operating method, the tool to be used, and the like are different between the coarse adjustment (pressing operation) and the fine adjustment (rotating operation), the adjustment work is performed. It is not good and requires advanced skill. Further, when performing each adjustment continuously, it is necessary to change the tool, which also causes a decrease in workability.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a hairspring adjustment mechanism, a movement, and a timepiece capable of improving workability.

The present invention provides the following means in order to solve the above problems.
A hairspring adjustment mechanism according to the present invention includes a first and a second assembly part that is rotatable about a central axis of the balance with hair and that is in contact with the hairspring of the balance, and a first assembly part to which a tool is assembled. A first adjusting member for rotating the slow and steep needle at a first pitch in accordance with the rotation operation; and a second assembling portion to which the tool is assembled; and a first smaller than the first pitch in accordance with the rotation operation at the predetermined angle. A second adjusting member that rotates the slow and steep needle at two pitches, wherein the first and second assembly parts have the same assembly direction of the tool. To do.

According to this configuration, the second pitch of the slow / fast needle when the second adjustment member is rotated at a predetermined angle is smaller than the first pitch of the slow / fast needle when the first adjustment member is rotated at the predetermined angle. . For this reason, the position of the slow and steep needle can be roughly adjusted by rotating the first adjustment member during coarse adjustment, and the position of the slow and steep needle can be finely adjusted by rotating the second adjustment member during fine adjustment. be able to. In this way, in each adjustment member, the pitch of the slow / fast needle when the adjustment members are rotated by a predetermined angle is made different, so that the slow / fast needle can be accurately and quickly adjusted to a desired position.
In particular, since the tool can be assembled from the same direction with respect to the assembling part of each adjusting member, the tool is changed between coarse adjustment and fine adjustment, and the assembling direction and operation direction of the tool are changed. Workability can be improved as compared with the above configuration. In addition, since the position (rate) of the quick and slow needle can be easily adjusted only by rotating operation, it is not necessary to have a highly skilled technique, and it is possible to reduce the work cost while suppressing damage to parts.

Further, in the hairspring adjustment mechanism according to the present invention, the first adjustment member includes a first gear portion connected directly or indirectly to a connection portion of the slow and steep needle, and the second adjustment member includes the A second gear portion that is directly or indirectly connected to the connecting portion and has a smaller number of teeth than the first gear portion may be provided.
According to this structure, since the 1st adjustment member and the 2nd adjustment member are equipped with the gear part, size reduction of each adjustment member can be achieved and layout property can be improved.

In the hairspring adjustment mechanism according to the present invention, the first gear portion and the second gear portion may be directly connected to the connection portion, respectively.
According to this configuration, the rotational torque of the second adjustment member can be directly transmitted to the slow and steep needle, so that the number of parts can be reduced compared to the configuration in which the intermediate gear portion is disposed between the adjustment members. Can do. In addition, by connecting each adjustment member directly to the slow / fast needle, the rotation direction of the slow / fast needle relative to the rotation direction of the tool can be the same direction between the adjustment members. Thereby, the further improvement of workability | operativity can be aimed at.

Further, in the hairspring adjustment mechanism according to the present invention, an intermediate gear portion that connects between the first gear portion and the second gear portion is disposed between the first adjustment member and the second adjustment member. The first gear portion may be directly connected to the connection portion, and the second gear portion may be connected to the first gear portion via the intermediate gear portion.
According to this configuration, since the second gear portion is connected to the first gear portion via the intermediate gear portion, the rotation direction of the slow and steep needle relative to the operation direction of the tool can be the same direction between the adjustment members. it can. Thereby, the further improvement of workability | operativity can be aimed at.

Further, in the hairspring adjustment mechanism according to the present invention, the first gear portion is directly connected to the connection portion, and the second gear portion is indirectly connected to the connection portion via the first gear portion. It may be connected to.
According to this configuration, since the second adjustment member and the first adjustment member are directly connected, the number of parts can be reduced as compared with the configuration in which the intermediate gear portion is disposed between the adjustment members. .

Further, in the hairspring adjustment mechanism according to the present invention, the first adjustment member is directly connected to the connection portion of the slow and steep needle, and the first and second needles are rotated in accordance with a rotation operation of the first adjustment member. An arm, and the second adjustment member is connected to the first arm, and includes a second arm that rotates the slow and quick needle through the first arm in accordance with a rotation operation of the second adjustment member, The distance between the central axis and the rotation center of the second arm may be shorter than the distance between the central axis and the rotation center of the first arm.
According to this structure, simplification can be achieved compared with the case where a gear part is used by connecting the slow / fast needle or each adjustment member via an arm.

Further, in the hairspring adjustment mechanism according to the present invention, the first adjustment member is directly connected to the connection portion of the slow and steep needle, and the first and second needles are rotated in accordance with a rotation operation of the first adjustment member. The second adjustment member includes an arm that is eccentric with respect to the rotation center and engages with the first arm, and the second adjustment member is provided with the rotation of the cam portion. The slow and quick needle may be rotated through an arm.
According to this configuration, since the second adjusting member has the cam portion, the second pitch of the steep and steep needle when the second adjusting member is rotated at a predetermined angle is determined according to the shape of the cam portion and the amount of eccentricity. Easy to adjust. In addition, the layout can be improved and the size can be reduced as compared with the case where an arm is used for each adjustment member.

Further, in the hairspring adjustment mechanism according to the present invention, the first adjustment member includes a first screw portion that presses the slow and steep needle in one direction around the central axis in accordance with a rotation operation, and the second adjustment member. The member is provided with a second screw portion having a screw pitch smaller than that of the first screw portion while pressing the slow / fast needle toward the one direction in accordance with a rotation operation, and the first adjustment member and the second adjustment member Between the main base in which at least one of the first screw portion and the second screw portion is screwed, and the other screw of the first screw portion and the second screw portion. And a sub-base that is screwed so as to be able to press the slow and quick needle and the one screw portion is rotatably supported.
According to this configuration, by using a screw for each adjustment member, after the rotation operation of each adjustment member is converted into a linear movement, the slow / fast needle rotates. Therefore, the pitch of the slow and steep needles when each adjustment member is rotated by a predetermined angle can be reduced, and more precise adjustment is possible.

A movement according to the present invention includes the balance spring adjusting mechanism according to the present invention.
A timepiece according to the present invention includes the above-described movement according to the present invention.
According to this configuration, since the balance spring adjusting mechanism of the present invention is provided, it is possible to provide a movement and a timepiece having excellent workability and high accuracy of the rate.

  According to the present invention, workability can be improved.

It is an external view of a timepiece. It is the top view which looked at the movement from the front side. It is the top view which looked at the balance which concerns on 1st Embodiment from the front side. It is sectional drawing which follows the IV-IV line of FIG. It is the top view which looked at the balance which concerns on 2nd Embodiment from the front side. It is sectional drawing which follows the VI-VI line of FIG. It is the top view which looked at the balance which concerns on 3rd Embodiment from the front side. It is sectional drawing which follows the VIII-VIII line of FIG. It is sectional drawing which follows the IX-IX line of FIG. It is the top view which looked at the balance which concerns on 4th Embodiment from the front side. It is sectional drawing which follows the XI-XI line of FIG. It is the top view which looked at the balance which concerns on 5th Embodiment from the front side. It is sectional drawing which follows the XIII-XIII line | wire of FIG. It is the top view which looked at the balance which concerns on 6th Embodiment from the front side. It is sectional drawing which follows the XV-XV line | wire of FIG.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
(First embodiment)
[clock]
FIG. 1 is an external view of the timepiece 1.
As shown in FIG. 1, a timepiece 1 of the present embodiment includes a movement 10, a dial 4 having a scale indicating information on time, and the like in a timepiece case 3 having a case lid (not shown) and glass 2. A pointer (hour hand 5, minute hand 6 and second hand 7) and the like are incorporated.

<Movement>
FIG. 2 is a plan view of the movement 10 as viewed from the front side. In FIG. 2, in order to make the drawing easier to see, some of the timepiece components constituting the movement 10 are not shown, and each timepiece component is shown in a simplified manner. In the following description, the glass 2 side (the dial plate 4 side) of the watch case 3 with respect to the base plate 16 constituting the substrate of the movement 10 is referred to as the “back side” of the movement 10, and the case lid side (the dial plate 4 side). The opposite side) is referred to as the “front side” of the movement 10.

As shown in FIG. 2, the movement 10 includes a main plate 16, a front wheel train (not shown) including a barrel wheel, a second car, a third car, and a fourth car, and an escapement for controlling the rotation of the front wheel train. And a speed governor 11. The illustrated movement 10 is an example of a self-winding timepiece having a rotary weight 12 as an example. However, the present invention is not limited to this case, and a movement 10 for a hand-wound timepiece using a winding stem 13 may be used.
Of the front wheel train described above, the second hand 7 is attached to the fourth wheel, and the minute hand 6 is attached to the second wheel. Further, the hour hand 5 described above is attached to an hour wheel that rotates with the rotation of the center wheel & pinion.

  The escapement speed governor 11 includes an escape wheel (not shown) that meshes with the fourth wheel, an ankle (not shown) that moves the escape wheel, and a balance 15 that operates regularly at a constant cycle.

3 is a plan view of the balance with hairspring 15 viewed from the front side, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.
As shown in FIG. 3 and FIG. 4, the balance with hairspring 15 is attached to the balance stem 20, a balance shaft 20 that supports the balance stem 20, and a balance stem 20 that is rotatable about the central axis O <b> 1 of the balance 15. The balance wheel 22, the hairspring 23 arranged between the balance stem 20 and the balance wheel 22, the hairspring holder 24, which is rotatable around the central axis O <b> 1, and the rotation around the central axis O <b> 1. And a hairspring adjustment mechanism 26 having a slow / fast needle 25.
In the following description, a direction along the central axis O1 may be referred to as an axial direction, a direction orthogonal to the central axis O1 may be referred to as a radial direction, and a direction around the central axis O1 may be referred to as a circumferential direction.

  The balance stem 20 rotates forward and backward with a constant vibration period around the central axis O <b> 1 by the power transmitted from the hairspring 23. The balance stem 20 has one end (front side end) in the axial direction supported by the balance holder 30 via a bearing 21 and the other end (back side end) formed on the main plate 16 (see FIG. 2) (not shown). Supported by a bearing. A cylindrical swing seat 27 (see FIG. 4) linked to the above-described ankle is externally mounted on the other end portion of the balance stem 20.

The balance with hairspring 30 is arcuate in a plan view as viewed from the axial direction, and extends in accordance with the shape of the watch case 3. Specifically, the balance holder 30 is located on one end side in the extending direction (on the opposite side to the slow and steep needle 25), the mounting base 31 attached to the main plate 16, and the other end side in the extending direction from the mounting base 31. And a pedestal plate 32 that protrudes toward the slow / fast needle 25 side.
A plurality of mounting holes 33 penetrating in the axial direction are formed in the mounting base 31. The balance holder 30 is fixed to the main plate 16 via fixing screws 34 (see FIG. 2) inserted into the mounting holes 33.
The pedestal plate 32 is formed one step down from the mounting base 31 on the back side. A bearing tube portion 35 (see FIG. 4) that holds the bearing 21 is formed on the pedestal plate 32 coaxially with the central axis O1.

  The bearing 21 is a so-called vibration-resistant bearing, and is disposed on the bearing frame 40, a hole stone 41 attached to the bearing frame 40 and rotatably supporting one end portion of the balance stem 20, and the hole stone 41. A receiving stone 42 that supports one end portion of the balance stem 20 from the front side, and a receiving stone holding spring (not shown) that is arranged so as to overlap the receiving stone 42 and urges the receiving stone 42 toward the balance stem 20. . In addition, the structure of the bearing 21 is an example, and if it is a structure which can support the balance stem 20 rotatably, a design change is possible suitably.

  The bearing frame 40 is arranged coaxially with the central axis O, and has a multistage cylindrical shape in which one end portion in the axial direction is expanded in diameter as compared with the other end portion. The other end of the bearing frame 40 is fixed to the balance 30 by being press-fitted into the above-described bearing tube portion 35 of the base plate 32 from the front side.

  As shown in FIG. 4, the balance wheel 22 includes a hub portion 43 fixed to the balance 20 by press-fitting or the like, an annular rim portion 44 surrounding the hub portion 43 from the outside in the radial direction, A connecting portion 45 that connects the rim portions 44 to each other.

As shown in FIGS. 3 and 4, the whisk holder 24 has a C shape in a plan view as viewed from the axial direction, and is externally fitted to the bearing tube portion 35 of the pedestal plate 32. The whisker holder 24 slips with respect to the bearing tube portion 35 when a predetermined rotational torque is applied, and can rotate around the central axis O1.
The whisker receiver 24 has a pair of whisker arms 47 that extend outward in the radial direction and hold the whisker 46 at its tip. Each whisker arm 47 is spaced apart in the circumferential direction and sandwiches the whisker 46.

  The hairspring 23 is a spiral whiskers in a plan view viewed from the axial direction wound along the Archimedes curve. The hairspring 23 has an inner end portion connected to the balance stem 20 via a beard ball 49 (see FIG. 4), and an outer end portion connected to the above-described beard 46. The outer end portion of the hairspring 23 is an arc-shaped portion that bulges outward in the radial direction.

<Bear spring adjustment mechanism>
The hairspring adjustment mechanism 26 includes a slow / fast needle 25 and an adjustment unit 51 that adjusts the position of the slow / fast needle 25.
The slow / fast needle 25 includes a slow / fast needle body 52 that can rotate around the central axis O <b> 1 and a whisker bar unit 53 held by the slow / fast needle body 52.

  The slow and quick needle body 52 includes a base portion 54 that is rotatably fitted to one end portion (portion protruding from the bearing tube portion 35) of the bearing frame 40 described above, and a pair of holding arms 55 that hold the beard bar unit 53. And a connecting portion 56 for connecting the adjusting unit 51 and the slow and quick needle body 52.

The base portion 54 has a C-shape when viewed from the axial direction. The slow and steep needle body 52 slips with respect to the bearing frame 40 when a predetermined rotational torque is applied, and rotates around the central axis O1.
The holding arm 55 projects from the base portion 54 toward the outside in the radial direction. The holding arms 55 are arranged at intervals in the circumferential direction, and can be elastically deformed in directions to approach and separate from each other.

  The connecting portion 56 has an arc shape extending along the outer peripheral portion of the base portion 54, and protrudes from the base portion 54 toward the front side. Specifically, the inner peripheral portion of the connection portion 56 is connected to the outer peripheral portion of the base portion 54, and the outer peripheral portion protrudes outward in the radial direction from the base portion 54. A driven gear portion 58 connected to the adjustment unit 51 is formed on the outer peripheral portion of the connection portion 56.

As shown in FIG. 4, the beard bar unit 53 includes a shaft body 61 sandwiched between the holding arms 55 of the slow and quick needle body 52, and a beard extending from the shaft body 61 toward the hairspring 23 side (back side). A rod 62 and a beard receiver 63.
The shaft body 61 has a columnar shape extending along an axis O2 parallel to the central axis O1, and is sandwiched between the holding arms 55 so as to be movable in the radial direction and rotatable about the axis O2.

  The hairspring 62 and the hairdresser 63 are in a state in which a gap is formed in a radial direction with respect to a portion of the outer end portion of the hairspring 23 that is located closer to the inner end portion than the above-described whiskers 46. It is opposed in the radial direction across. Specifically, in the hairspring 23, a beard bar 62 is disposed on the outer side in the radial direction, and a beard receiver 63 is disposed on the inner side in the radial direction. The hairspring 23 is configured such that an outer end portion thereof can vibrate in a radial direction between the hairpin 62 and the hair support 63 and can come into contact with the hair brush 62 and the hair support 63.

  The adjustment unit 51 connects the first adjustment member 71 that performs coarse adjustment of the slow / fast needle 25, the second adjustment member 72 that performs fine adjustment of the slow / fast needle 25, and the first adjustment member 71 and the second adjustment member 72. Intermediate member 73.

The first adjustment member 71 is rotatably supported by the attachment base 31 of the balance holder 30 and is directly connected to the connection portion 56 of the slow and quick needle body 52. Specifically, the first adjustment member 71 includes a shaft portion 75 extending in parallel with the central axis O <b> 1 and a first gear portion 76 disposed on the shaft portion 75.
The shaft portion 75 is inserted into the support hole 77 of the mounting base portion 31, and is configured to be rotatable around the axis C1. A first assembly portion 78 to which a tool (for example, a driver) is assembled is formed at a portion of the shaft portion 75 located on the front side of the attachment base portion 31. The first assembly 78 has a diameter that is larger than that of the shaft 75, and a holding groove 79 that holds the tool is formed. The holding groove 79 opens toward the front side and extends along a radial direction orthogonal to the axis C1.

  The first gear portion 76 is disposed in a portion of the shaft portion 75 located between the first assembly portion 78 and the attachment base portion 31. A part of the outer peripheral portion of the first gear portion 76 faces the pedestal plate 32 of the balance holder 30 and meshes with the driven gear portion 58 of the slow and quick needle body 52.

  The second adjustment member 72 is supported on the attachment base 31 so as to be rotatable with respect to the first adjustment member 71 on the side opposite to the slow and steep needle 25 side. Specifically, the second adjustment member 72 includes a shaft portion 81 extending in parallel with the central axis O <b> 1 and a second gear portion 82 disposed on the shaft portion 81.

The shaft portion 81 is inserted into the support hole 84 of the mounting base portion 31, and is configured to be rotatable around the axis C2. A second assembly portion 85 to which the tool is assembled is fixed to a portion of the shaft portion 81 that is located on the front side of the attachment base portion 31. The second assembly portion 85 has a diameter that is larger than that of the shaft portion 81, and a holding groove 86 that holds the tool is formed. The holding groove 86 opens toward the front side and extends along a radial direction orthogonal to the axis C2. That is, the holding groove 86 of the second assembling portion 85 has a plan view outer shape that corresponds to the holding groove 79 of the first assembling portion 78 described above, and is the same as the inside of the holding groove 79 of the first assembling portion 78. These tools can be held from the same assembly direction.
The second gear portion 82 is disposed in a portion of the shaft portion 81 located between the second assembly portion 85 and the attachment base portion 31.

  The intermediate member 73 is disposed on a portion located between the first adjustment member 71 and the second adjustment member 72 on the attachment base 31 and is rotatable around an axis Cc extending in parallel with the central axis O1. The intermediate member 73 has an intermediate gear portion 89 that meshes with both the first gear portion 76 of the first adjustment member 71 and the second gear portion 82 of the second adjustment member 72.

  Here, among the first gear portion 76, the intermediate gear portion 89, and the second gear portion 82 described above, the intermediate gear portion 89 and the second gear portion 82 have the same number of teeth. The number of teeth of the intermediate gear portion 89 and the second gear portion 82 is smaller than the number of teeth of the first gear portion 76. In the present embodiment, the gear ratio of the driven gear portion 58 of the slow / fast needle 25 to the first gear portion 76 is set to 2, and the gear ratio of the driven gear portion 58 of the slow / fast needle 25 to the second gear portion 82 is set to 4. ing.

[How to adjust the hairspring]
Next, as a method for adjusting the hairspring 23, a rate adjustment and a rate isochronous adjustment method by the hairspring adjustment mechanism 26 described above will be described.
In the yield adjustment, the effective length of the hairspring 23 (the inner end portion of the hairspring 23 and the hairspring 23 is adjusted by rotating the slow / fast needle 25 around the central axis O1 and adjusting the position of the hairspring unit 53 with respect to the hairspring 23. The length between the mainspring 23 and the contact portion of the whisker 62 is adjusted. In the rate adjustment according to the present embodiment, rough adjustment for roughly adjusting the position of the beard bar unit 53 and fine adjustment for finely adjusting the position of the beard bar unit 53 are sequentially performed.

  First, in rough adjustment, a tool is inserted into the holding groove 79 of the first adjustment member 71 (first assembly portion 78), and the first adjustment member 71 is rotated around the axis C1 via the tool. Then, the rotational torque of the first adjustment member 71 is transmitted to the slow and steep needle body 52 via the first gear portion 76 and the driven gear portion 58, and the slow and steep needle 25 rotates counterclockwise around the central axis O1 with respect to the first adjustment member 71. To do. At this time, as described above, since the gear ratio of the driven gear portion 58 to the first gear portion 76 is set to 2, the adjustment rotation angle (first pitch) of the slow / fast needle 25 at the time of coarse adjustment is the first adjustment member. This is half of the operation rotation angle (predetermined angle) of 71.

When the first adjusting member 71 is rotated clockwise in a plan view as viewed from the front side, the slow / fast needle 25 rotates counterclockwise, and the whisker bar unit 53 is separated from the beard 46. Thereby, the effective length of the hairspring 23 can be shortened, and the rate is adjusted to advance.
On the other hand, when the first adjustment member 71 is rotated counterclockwise in a plan view as viewed from the front side, the slow / fast needle 25 rotates in the clockwise direction, and the whisker bar unit 53 approaches the beard 46. Thereby, the effective length of the hairspring 23 can be increased, and the rate is adjusted to be delayed.

  After moving the beard bar unit 53 to a desired position, the tool is retracted from the holding groove 79. Thereby, rough adjustment is completed.

  Next, in the fine adjustment, the same tool as that used for the coarse adjustment is inserted into the holding groove 86 of the second adjustment member 72 (second assembly portion 85) from the same direction as in the coarse adjustment. Thereafter, the second adjusting member 72 is rotated around the axis C2 through the tool. Then, the rotational torque of the second adjustment member 72 is transmitted to the intermediate member 73 via the second gear portion 82 and the intermediate gear portion 89, and the intermediate member 73 rotates counterclockwise from the second adjustment member 72 about the axis Cc. When the intermediate member 73 rotates about the axis Cc, the rotational torque is transmitted to the first adjustment member 71 via the intermediate gear portion 89 and the first gear portion 76, and the first adjustment member 71 is rotated about the axis C1. And reverse rotation (rotation in the same direction as the rotation direction of the second adjustment member 72). Thereafter, along with the rotation of the first adjustment member 71, the slow / fast needle 25 rotates in the reverse direction around the central axis O from the first adjustment member 71. At this time, as described above, the gear ratio of the driven gear portion 58 of the slow / fast needle 25 to the second gear portion 82 is set to 4, so that the adjustment rotation angle (second pitch) of the slow / fast needle 25 at the time of fine adjustment is It becomes 1/4 with respect to the operation rotation angle (predetermined angle) of the second adjustment member 72.

  As described above, in the hairspring adjustment mechanism 26 of the present embodiment, the adjustment rotation angles of the slow and steep needles 25 when the adjustment members 71 and 72 are rotated at the same operation rotation angle are different. Specifically, the adjustment rotation angle of the slow / fast needle 25 when the second adjustment member 72 is rotated at a predetermined operation rotation angle is the adjustment rotation angle of the gentle adjustment needle 25 when the first adjustment member 71 is rotated at a predetermined operation rotation angle. Becomes smaller than the adjustment rotation angle. Therefore, by rotating the first adjustment member 71 during rough adjustment, the position of the beard bar unit 53 can be roughly adjusted. During fine adjustment, the second adjustment member 72 is rotated to rotate the beard bar unit 53. Can be finely adjusted.

Subsequently, when the isochronous adjustment is performed, the whisker stick unit 53 is rotated around the axis O2, and the interval between the whistle stick 62 and the outer end portion of the hairspring 23 and the outer part of the hair support 63 and the hairspring 23 are adjusted. Adjust the distance from the edge. Thereby, the isochronous adjustment of the rate can be performed.
This completes the rate adjustment and the isochronous adjustment of the rate.

As described above, in the hairspring adjustment mechanism 26 of the present embodiment, the first adjustment member 71 that rotates the slow / fast needle 25 at the first pitch in accordance with the rotation operation, and the slow / fast needle 25 smaller than the first pitch in accordance with the rotation operation. And a second adjustment member 72 rotated at the second pitch.
According to this configuration, in each of the adjustment members 71 and 72, the adjustment shaft 71 is rotated at the same operation rotation angle so that the adjustment rotation angle of the slow and steep needle 25 is made different so that the beard bar unit 53 is The desired position can be adjusted accurately and promptly.
In particular, in the present embodiment, the same tool can be assembled from the same direction with respect to the assembling portions 78 and 85 of the adjustment members 71 and 72, so that the tool can be changed between coarse adjustment and fine adjustment, Compared with the conventional configuration in which the assembling direction and the operating direction are changed, the workability can be improved. Further, since the rate adjustment can be easily performed only by the rotation operation, a highly skilled technique is not required, and it is possible to reduce the work cost while suppressing damage to parts and the like.

  Moreover, since the 1st adjustment member 71 and the 2nd adjustment member 72 have the gear parts 76 and 82, size reduction of each adjustment member 71 and 72 can be achieved, and layout property can be improved.

  Further, since the second gear portion 82 of the second adjustment member 72 is connected to the first gear portion 76 and the driven gear portion 58 via the intermediate gear portion 89, the rotational direction of the slow / fast needle 25 with respect to the operation direction of the tool is changed. It can be made the same direction between each adjustment member 71,72. Thereby, the further improvement of workability | operativity can be aimed at.

  Since the movement 10 and the timepiece 1 of the present embodiment include the above-described hairspring adjustment mechanism 26, the movement 10 and the timepiece 1 having excellent workability and high accuracy of the rate can be provided.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. FIG. 5 is a plan view of the balance 15 according to the second embodiment as viewed from the front side, and FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. The present embodiment is different from the first embodiment described above in that the second adjustment member 72 is directly connected to the first adjustment member 101. In the following description, the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
As shown in FIGS. 5 and 6, in the hairspring adjustment mechanism 126 of the present embodiment, the first gear portion 102 of the first adjustment member 101 is the second gear portion 58 of the slow / fast needle 25 and the second adjustment member 72. The two gear portions 82 are engaged with each other.

In the first gear portion 102, a driving tooth portion 102 a that meshes with the driven gear portion 58 of the slow / fast needle 25 is formed in a region on the slow / fast needle 25 side. In the illustrated example, the gear ratio of the driven gear portion 58 of the slow / fast needle 25 to the driving tooth portion 102a is smaller than the gear ratio of the driven gear portion 58 of the slow / fast needle 25 to the second gear portion 82. .
In the first gear portion 102, a transmission tooth portion 102 b that meshes with the second gear portion 82 is formed in a region on the second adjustment member 72 side (region opposite to the slow and steep needle 25 side). In the illustrated example, the number of teeth of the transmission tooth portion 102 b is the same as the number of teeth of the driven gear portion 58.

  According to this configuration, when the second adjustment member 72 is rotated through the tool during fine adjustment of the rate, the rotational torque is transmitted to the first adjustment member 101 through the transmission tooth portion 102b, and then gradually and rapidly. It is transmitted to the needle 25. In this case, by directly connecting the second adjustment member 72 and the first adjustment member 101, the number of parts can be reduced as compared with a configuration in which an intermediate member is disposed between the adjustment members 101 and 72. it can.

(Third embodiment)
Next, a third embodiment of the present invention will be described. FIG. 7 is a plan view of the balance with hairspring 15 according to the third embodiment as viewed from the front side. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7, and FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. The present embodiment is different from the first embodiment described above in that each of the adjustment members 71 and 72 is directly connected to the slow / fast needle 25. In the following description, the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 7 to FIG. 9, in the hairspring adjustment mechanism 226 of the present embodiment, the second gear portion 82 is connected to the meshing portion with the first gear portion 76 of the driven gear portion 58 of the slow and steep needle 25. It meshes at different positions in the direction.

  According to this configuration, when the second adjustment member 72 is rotated via a tool during fine adjustment, the rotational torque is transmitted to the slow / fast needle body 52 via the driven gear portion 58, and the slow / fast needle 25 is moved to the central axis. Rotate around O1. That is, since the rotational torque of the second adjustment member 72 can be directly transmitted to the slow / fast needle 25, the number of parts can be reduced as compared with a configuration in which an intermediate member is provided between the adjustment members 71 and 72. Can do. Further, by connecting each adjustment member 71, 72 directly to the slow / fast needle 25, the rotation direction of the slow / fast needle 25 relative to the rotation direction of the tool can be the same direction between the adjustment members 71, 72. Thereby, the further improvement of workability | operativity can be aimed at.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. FIG. 10 is a plan view of the balance 15 according to the fourth embodiment as viewed from the front side, and FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. This embodiment is different from the above-described embodiment in that the slow / fast needle 25 is rotated as the arms 302 and 320 rotate. In the following description, the same components as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

As shown in FIGS. 10 and 11, in the hairspring adjustment mechanism 326 of the present embodiment, first, the second arm 302 is fixed to the shaft portion 81 of the second adjustment member 301.
The second arm 302 extends in the radial direction orthogonal to the axis C2 (rotation center), and the shaft portion 81 is fixed to the central portion in the extending direction. At both ends of the second arm 302 in the extending direction, connection pins 310 and 311 for connecting the first adjustment member 303 and the slow and steep needle 25 and the second adjustment member 301 separately are provided upright.

  Of the connection pins 310, 311, the connection pin 310 erected at the end of the second arm 302 on the slow and steep needle 25 side is between a pair of connection arms (connection portions) 312 formed on the slow and steep needle body 52. It is pinched so as to be rotatable and movable in the radial direction of the slow / fast needle 25. Note that the connection arm 312 protrudes from the slow and steep needle body 52 toward the outer side in the radial direction, and is disposed at an interval in the circumferential direction.

The first adjustment member 303 is positioned on the attachment base 31 on the side opposite to the slow and steep needle 25 side with the second adjustment member 301 interposed therebetween. A first arm 320 is fixed to the shaft portion 75 of the first adjustment member 303.
The first arm 320 extends in the radial direction perpendicular to the axis C1 (rotation center) from the shaft portion 75 toward the slow and steep needle 25 side. A connection pin 311 erected at an end portion on the first adjustment member 303 side of the connection pins 310 and 311 described above can be rotated at the distal end portion (end portion on the slow and quick needle 25 side) of the first arm 320, and A pair of clamping pieces 321 are formed so as to be movable in the radial direction perpendicular to the axis C1.

  In the present embodiment, the central axis O1 of the slow / fast needle 25, the first adjustment member 303, and the axes C1 and C2 of the second adjustment member 301 are located on the same straight line when viewed from the axial direction. In this case, the distance between the central axis O1 and the axis C2 (rotation center of the second arm 302) is shorter than the distance between the central axis O1 and the axis C1 (rotation center of the first arm 320).

In this embodiment, when coarse adjustment is performed, a tool is inserted into the holding groove 79 of the first assembly portion 78, and the first adjustment member 303 is rotated through the tool. Then, as the first arm 320 swings around the axis C1, the swinging torque of the first arm 320 is transmitted to the second arm 302 via the connection pin 311 and the second arm 302 moves around the axis C2. It swings in the opposite direction to the one arm 320. Thereafter, the swinging torque of the second arm 302 is transmitted to the slow and steep needle body 52 via the connection pin 310, whereby the slow and steep needle 25 rotates around the central axis O1 in the direction opposite to the second arm 302.
On the other hand, when fine adjustment is performed, a tool is inserted into the holding groove 86 of the second assembly portion 85, and the second adjustment member 301 is rotated via the tool. Then, the second arm 302 swings around the axis C <b> 2, so that the swing torque of the second arm 302 is transmitted to the slow and steep needle body 52 via the connection pin 310. As a result, the slow / fast needle 25 rotates around the central axis O1 in the direction opposite to the second arm 302.

  Here, in the hairspring adjustment mechanism 326 of the present embodiment, as described above, the distance between the central axis O1 and the axis C2 is shorter than the distance between the central axis O1 and the axis C1. For this reason, the adjustment rotation angles of the slow / fast needle 25 when the adjustment members 301 and 303 are swung at the same operation rotation angle are different. Specifically, when the second adjustment member 301 (second arm 302) is swung at a predetermined operation rotation angle, the adjustment rotation angle of the slow and steep needle 25 is set so that the first adjustment member 303 (first arm 320) is predetermined. It becomes smaller than the adjustment rotation angle of the slow / fast needle 25 when it is swung at the operation rotation angle.

  According to this configuration, the same effects as in the above-described embodiments can be obtained, and when the gear portion is used by connecting the slow / fast needle 25 or the adjustment members 301 and 303 via the arms 302 and 320. In comparison, simplification can be achieved. In the present embodiment, the configuration in which the first adjustment member 303 is indirectly connected to the slow / fast needle 25 via the second adjustment member 301 is described, but the present invention is not limited thereto. A configuration in which each of the adjustment members 301 and 303 is directly connected to the slow / fast needle 25 may be used.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described. 12 is a plan view of the balance with hairspring 15 according to the fifth embodiment as viewed from the front side, and FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. This embodiment is different from the above-described embodiment in that the slow / fast needle 25 is rotated using a cam. In the following description, the same components as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.
As shown in FIGS. 12 and 13, in the hairspring adjustment mechanism 426 of the present embodiment, the first arm 402 is fixed to the shaft portion 75 of the first adjustment member 401.

The first arm 402 extends in a radial direction orthogonal to the axis C1, and a shaft portion 75 is fixed to a central portion in the extending direction. A connection pin 403 that connects the first adjustment member 401 and the slow / fast needle 25 is provided upright at the end of the first arm 402 located on the slow / fast needle 25 side. The connection pin 403 is sandwiched between the pair of connection arms 312 formed on the slow / fast needle body 52 so as to be rotatable and movable in the radial direction of the slow / fast needle 25.
A cam follower 411 connected to the second adjustment member 410 is formed at the end of the first arm 402 on the second adjustment member 410 side. The cam follower 411 extends in a forked manner along the extending direction of the first arm 402.

  A cam portion 413 is fixed to the shaft portion 81 of the second adjustment member 410. The cam portion 413 has a disk shape in a plan view as viewed from the direction of the axis C2, and is fixed to the shaft portion 81 in a state where the center thereof is eccentric with respect to the axis C2. The cam portion 413 is engaged in the cam follower portion 411 of the first adjustment member 401, and its outer peripheral surface (cam surface) is slidable (movable while in contact with the inner peripheral surface of the cam follower portion 411). ).

In such a configuration, when coarse adjustment is performed, a tool is inserted into the holding groove 79 of the first assembly portion 78, and the first adjustment member 401 is rotated via the tool. Then, the first arm 402 swings around the axis C <b> 1, so that the swing torque of the first arm 402 is transmitted to the slow and steep needle body 52 via the connection pin 403. As a result, the slow / fast needle 25 rotates around the central axis O1 in the opposite direction to the first arm 402.
On the other hand, when fine adjustment is performed, a tool is inserted into the holding groove 86 of the second assembly portion 85, and the second adjustment member 410 is rotated via the tool. Then, the cam portion 413 rotates around the axis C2 while being in contact with the cam follower portion 411, so that the distance between the cam follower portion 411 and the axis C2 changes, and the first arm 402 moves around the axis C1. Swings in the same direction. As a result, the slow / fast needle 25 rotates around the central axis O1 in the opposite direction to the first arm 402.

According to this configuration, since the second adjustment member 410 swings the first adjustment member 401 (first arm 402) via the cam portion 413, the second adjustment member 410 is swung at a predetermined operation rotation angle. In this case, the adjustment rotation angle of the slow / fast needle 25 can be reduced as compared with the case where the first adjustment member 401 is directly rotated. Therefore, the same operational effects as those of the above-described embodiments can be obtained.
In the present embodiment, since the second adjustment member 410 has the cam portion 413, the adjustment rotation angle of the slow and steep needle 25 with respect to the operation rotation angle of the second adjustment member 410 is set to the shape and eccentricity of the cam portion 413. It can be easily adjusted accordingly. In addition, the layout can be improved and the size can be reduced as compared with the case where an arm is used for each of the adjustment members 401 and 410.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described. FIG. 14 is a plan view of the balance with hairspring 15 according to the sixth embodiment as viewed from the front side. FIG. 15 is a sectional view taken along line XV-XV in FIG. The present embodiment is different from the above-described embodiment in that the slow / fast needle 25 is rotated using a screw. In the following description, the same components as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.
As shown in FIGS. 14 and 15, in the hairspring adjustment mechanism 526 of the present embodiment, the adjustment unit 501 includes a first adjustment member 502 and a second adjustment member 503, the adjustment members 502 and 503, and the slow and fast needle 25. And an intermediate member 504 for connecting the two.

First, the intermediate member 504 includes a shaft portion 510 that extends in parallel with the central axis O <b> 1 and an intermediate arm 511 disposed on the shaft portion 510.
The shaft portion 510 is supported by the mounting base portion 31 so as to be rotatable around the axis Cc.
The intermediate arm 511 extends in the radial direction perpendicular to the axis Cc, and the shaft portion 510 is fixed to a middle portion in the extending direction. In the intermediate arm 511, a connection pin 512 is provided at the end of the slow / fast needle 25 side so as to be rotatable by the connection arm 312 of the slow / fast needle body 52 and movable in the radial direction of the slow / fast needle 25. Yes. The end of the intermediate arm 511 opposite to the slow / fast needle 25 side constitutes an operation unit 513 that is directly connected to the second adjustment member 503.

  The first adjustment member 502 is disposed on a portion of the mounting base 31 that is located on the opposite side of the slow and steep needle 25 with the intermediate member 504 interposed therebetween, and is attached to the main base 520 erected from the mounting base 31. It is rotatably supported. Specifically, the first adjustment member 502 includes a shaft portion 521 extending in a direction orthogonal to a straight line L passing through the central axis O1 and the axis Cc of the intermediate member 504 in a plan view viewed from the front side. The axis C1 of the shaft portion intersects the straight line L on the opposite side of the intermediate member 504 from the slow and steep needle 25 side.

  A first screw portion 522 is formed in a spiral shape on the outer peripheral surface of the shaft portion 521. The first screw portion 522 is screwed into a female screw hole 520 a formed in the main base 520. Accordingly, the first adjustment member 502 is configured to be linearly movable along the axis C1 in accordance with the rotation around the axis C1 with respect to the main base 520.

A first assembly 78 having a holding groove 79 is formed at the base end of the shaft 521 (the end opposite to the straight line L side with respect to the shaft 521).
A rod-like extension 523 extending coaxially with the axis C1 is formed at the tip of the shaft 521 (the end on the straight line L side with respect to the shaft 521). The extension portion 523 is rotatably supported by the sub-base 525 that connects the adjustment members 502 and 503. Note that a pair of stoppers 524 that prevent the first adjustment member 502 from coming off from the sub base 525 are provided in portions of the extension 523 that are located on both sides of the axis C1 with the sub base 525 interposed therebetween.

  The second adjustment member 503 is arranged on the attachment base 31 along with the first adjustment member 502 at a portion located on the gentle needle 25 side with respect to the first adjustment member 502. The second adjustment member 503 includes a shaft portion 531 that extends in parallel with the axis C1 of the first adjustment member 502 and faces the operation portion 513 of the intermediate member 504 (intermediate arm 511) in the direction of the axis C2. The shaft portion 531 is inserted into a through hole 520 b formed in the main base 520.

  A second screw portion 532 is formed in a spiral shape on the outer peripheral surface of the shaft portion 531. The second screw portion 532 is screwed into a female screw hole 525 a formed in the sub base 525. Accordingly, the second adjustment member 503 is configured to be linearly movable along the axis C2 in accordance with the rotation around the axis C2 with respect to the sub-base 525. Note that the screw pitch of the second screw portion 532 is smaller than the screw pitch of the first screw portion 522.

A second assembly portion 85 having a holding groove 86 is formed at the base end portion of the shaft portion 531 (the end portion opposite to the straight line L side with respect to the shaft portion 531).
A rod-like pressing portion 535 extending coaxially with the axis C2 is formed at the distal end portion of the shaft portion 531 (the end portion on the straight line L side with respect to the shaft portion 531). The pressing portion 535 protrudes to the straight line L side from the sub-base 525, and the distal end portion is in contact with the operation portion 513 of the intermediate arm 511. The pressing portion 535 presses the operation portion 513 of the intermediate arm 511 in accordance with the linear movement of the second adjustment member 503, and swings the intermediate arm 511 in one direction around the axis Cc (clockwise in the illustrated example).

  The mounting base 31 is provided with a biasing member 541 that biases the intermediate arm 511 in the other direction around the axis Cc (counterclockwise in the illustrated example). The biasing member 541 has a leaf spring shape, one end of which is fixed to the mounting base 31, and the other end is in contact with the end of the intermediate arm 511 on the slow / fast needle 25 side.

  In such a configuration, when coarse adjustment is performed, a tool is inserted into the holding groove 79 of the first assembly portion 78, and the first adjustment member 502 is rotated via the tool. Then, the first adjustment member 502 rotates around the axis C1 and linearly moves in the direction of the axis C1 with respect to the main base 520. In the present embodiment, since the second adjustment member 503 is inserted into the main base 520 and screwed into the sub base 525, the second adjustment member 503 and the sub base 525 together with the first adjustment member 502 are main base 520. Move linearly with respect to.

  When the adjustment members 502 and 503 and the sub base 525 move toward the straight line L, the pressing portion 535 of the second adjustment member 503 presses the intermediate arm 511 via the operation portion 513. As a result, the intermediate arm 511 swings in one direction around the axis Cc, and the swinging torque of the intermediate arm 511 is transmitted to the slow and fast needle body 52 via the connection pin 512. As a result, the slow / fast needle 25 rotates around the central axis O1 in the opposite direction to the intermediate arm 511. When the intermediate arm 511 swings in one direction around the axis Cc, the intermediate arm 511 is urged in the other direction around the axis Cc by the urging member 541, so that the operation with the pressing portion 535 is performed. The contact state with the portion 513 is maintained.

  On the other hand, when fine adjustment is performed, a tool is inserted into the holding groove 86 of the second assembly portion 85, and the second adjustment member 503 is rotated via the tool. Then, the second adjusting member 503 rotates around the axis C2 and linearly moves in the direction of the axis C2 with respect to the main base 520 and the sub base 525. When the second adjustment member 503 moves toward the straight line L, the pressing portion 535 of the second adjustment member 503 presses the intermediate arm 511 via the operation portion 513. As a result, similarly to the coarse adjustment described above, the slow / fast needle 25 rotates around the central axis O1 in the opposite direction to the intermediate arm 511.

  Here, as described above, the pitch of the second screw portions 532 is narrower than the pitch of the first screw portions 522. Therefore, the amount of movement in the direction of the axis C2 when the second adjustment member 503 is rotated at a predetermined operation rotation angle is the amount of movement in the direction of the axis C1 when the first adjustment member 502 is rotated at a predetermined operation rotation angle. It becomes shorter than the amount of movement. Therefore, when the second adjustment member 72 is rotated at a predetermined operation rotation angle, the adjustment rotation angle of the slow / fast needle 25 is adjusted when the first adjustment member 71 is rotated at a predetermined operation rotation angle. It becomes smaller than the rotation angle.

  When the adjustment members 502 and 503 are moved in a direction away from the straight line L (a direction away from the operation unit 513), the biasing member 541 is moved according to the amount of movement of the adjustment members 502 and 503. By restoring, the intermediate arm 511 rotates in the other direction around the axis Cc. Thereby, the slow / fast needle 25 can be rotated according to the movement amount of each adjustment member 502,503.

  In the present embodiment, the same operational effects as those of the above-described embodiments are obtained, and by using screws for the adjustment members 502 and 503, the rotation operation of the adjustment members 502 and 503 is converted into linear movement, and then the speed is increased and decreased. The needle 25 will rotate. Therefore, the adjustment rotation angle of the slow / fast needle 25 with respect to the operation rotation angle of each adjustment member 502, 503 can be reduced, and more precise adjustment is possible.

In the above-described embodiment, the configuration in which the second adjustment member 503 is inserted through the main base 520 has been described. However, the present invention is not limited to this, and at least the first adjustment member 502 is screwed into the main base 520 and each adjustment member is inserted. 502 and 503 may be connected via the subbase 525.
In the present embodiment, the configuration in which the second adjustment member 503 presses the intermediate arm 511 has been described. However, the configuration is not limited thereto, and the first adjustment member 502 may press the intermediate arm 511.
Further, if each of the adjustment members 502 and 503 is configured to swing the intermediate arm 511 in one direction and the biasing member 541 to swing the intermediate arm 511 in the other direction, each of the adjustment members 502 and 503 and the biasing member. The design of the arrangement position of 541 can be changed as appropriate.

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-described embodiment, the case where the rate adjustment is performed by the first adjustment member and the second adjustment member having different adjustment rotation angles of the slow / fast needle 25 has been described. Other adjustment members having different adjustment rotation angles of the needle 25 may be provided.
In addition, the adjustment rotation angle of the slow / fast needle 25 in each adjustment member can be appropriately changed in design.
Furthermore, a tool for rotating the first adjustment member and the second adjustment member can be selected as appropriate, such as a screwdriver or tweezers.
Moreover, if the assembly | attachment direction of a tool is made into the same direction with respect to a 1st assembly part and a 2nd assembly part, about the assembly | attachment direction, it can change suitably.

  In the above-described embodiment, the connection between the slow / fast needle 25 and each adjustment member has been described with respect to the configuration using the connection pin and the driven gear portion, but the present invention is not limited to this. For example, it may be connected via a belt or the like.

  In addition, in the range which does not deviate from the meaning of this invention, it is possible to replace suitably the component in the embodiment mentioned above by a known component, and you may combine each modification mentioned above suitably.

DESCRIPTION OF SYMBOLS 1 ... Clock 10 ... Movement 23 ... Hairspring 25 ... Slow / fast needle 26, 126, 226, 326, 426, 526 ... Hairspring adjustment mechanism 56 ... Connection part 71, 101, 303, 401, 502 ... 1st adjustment member 72, 301, 410, 503 ... 2nd adjustment member 76, 102 ... 1st gear part 78 ... 1st assembly part 82 ... 2nd gear part 85 ... 2nd assembly part 89 ... Intermediate | middle gear part 302 ... 2nd arm 312 ... Connection arm (connection part)
320 ... 1st arm 413 ... Cam part 520 ... Main base 522 ... 1st screw part 525 ... Sub base 532 ... 2nd screw part

Claims (10)

A slow and quick needle that is rotatable about the central axis of the balance with the balance of the balance with the balance,
A first adjusting member that has a first assembling part to which a tool is assembled, and rotates the slow and steep needle at a first pitch in accordance with a rotation operation of a predetermined angle;
A second adjusting member that has a second assembling part to which the tool is assembled, and rotates the slow and quick needle at a second pitch smaller than the first pitch in accordance with the rotation operation of the predetermined angle;
The hairspring adjustment mechanism, wherein the first assembly part and the second assembly part have the same assembly direction of the tool. The first adjustment member includes a first gear portion that is directly or indirectly connected to a connection portion of the slow and quick needle,
The said 2nd adjustment member is provided with the 2nd gear part with fewer teeth than the said 1st gear part while being connected to the said connection part directly or indirectly. The balance spring adjustment mechanism.   The hairspring adjustment mechanism according to claim 2, wherein the first gear portion and the second gear portion are directly connected to the connection portion, respectively. An intermediate gear portion that connects between the first gear portion and the second gear portion is disposed between the first adjustment member and the second adjustment member,
The first gear portion is directly connected to the connection portion,
The hairspring adjustment mechanism according to claim 2, wherein the second gear portion is connected to the first gear portion via the intermediate gear portion. The first gear portion is directly connected to the connection portion,
3. The hairspring adjustment mechanism according to claim 2, wherein the second gear portion is indirectly connected to the connection portion via the first gear portion. The first adjustment member includes a first arm that is directly connected to a connection portion of the slow and quick needle and rotates the slow and quick needle in accordance with a rotation operation of the first adjustment member,
The second adjustment member includes a second arm that is connected to the first arm and rotates the slow and quick needle through the first arm in accordance with a rotation operation of the second adjustment member.
The hairspring adjustment according to claim 1, wherein a distance between the central axis and the rotation center of the second arm is shorter than a distance between the central axis and the rotation center of the first arm. mechanism. The first adjustment member includes a first arm that is directly connected to a connection portion of the slow and quick needle and rotates the slow and quick needle in accordance with a rotation operation of the first adjustment member,
The second adjustment member includes a cam portion that is eccentric with respect to the rotation center and that engages with the first arm,
2. The hairspring adjustment mechanism according to claim 1, wherein the second adjustment member rotates the slow and steep needle through the first arm as the cam portion rotates. The first adjustment member includes a first threaded portion that presses the slow and steep needle in one direction around the central axis in accordance with a rotation operation,
The second adjustment member includes a second screw portion that presses the slow and steep needle toward the one direction in accordance with a rotation operation and has a screw pitch smaller than the first screw portion,
Between the first adjustment member and the second adjustment member,
A main base in which at least one of the first screw portion and the second screw portion is screwed;
A sub-base in which the other screw portion of the first screw portion and the second screw portion is screwed so as to be able to press the slow and quick needle, and the one screw portion is rotatably supported. The hairspring adjustment mechanism according to claim 1, wherein:   A movement comprising the hairspring adjustment mechanism according to any one of claims 1 to 8.   A timepiece comprising the movement according to claim 9.

Images