JP6703203B1 - Hairspring adjustment mechanism, balance reception unit, movement and clock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a balance spring adjusting mechanism capable of easily adjusting a beard holding direction in a desired direction, a balance with hairspring receiving unit equipped with this balance spring adjusting mechanism, a movement and a timepiece. SOLUTION: A balance spring adjusting mechanism 7 has a spiral balance spring 23 and an outer end 29 of the balance spring 23 connected to each other, and extends along a first axis O parallel to a central axis C of the balance spring 23. The whiskers 53 rotatable in the first direction D1 and the second direction around the first axis O, the whiskers 37 connected to the balance with hairspring 6, and the whiskers 53 movably held in the first direction D1. At the same time, the whisker-holding press 54 rotatably supported in the second direction, and the whistle-holding screw 55 for contacting the whisker-holding 53 to restrict the movement of the whistle-holding 53 with respect to the whisker-holding 54 in the first direction D1. And [Selection diagram] Fig. 5

Description

The present invention relates to a balance spring adjusting mechanism, a balance receiving unit, a movement and a timepiece.

BACKGROUND ART Conventionally, a mechanical timepiece configuration using a balance spring fixed to the center of a balance with hairspring has been known. In mechanical timepieces, the dimensions of the beard holding the outer end portion of the hairspring may differ from each other due to, for example, manufacturing errors. In such a case, various techniques have been proposed for adjusting the isochronism of the mechanical timepiece by adjusting the position of the beard.

For example, in Patent Document 1, a balance spring stud whose inner end is connected to a balance staff, a balance spring stud (beard) for holding the outer end of the balance spring, and a beard by being attached to the beard and rotated. A configuration of a vibration system for a timepiece including an adjusting screw for urging the outer end portion of the mainspring is disclosed. According to the technique described in Patent Document 1, the outer end portion of the hairspring can be arbitrarily bent by rotating the adjustment screw and moving it in the axial direction. It is said that this makes it possible to decenter the hairspring from the center of the hairspring and reduce isochronous errors.

Japanese Patent No. 4976262

However, in the technique described in Patent Document 1, the outer end portion of the hairspring is moved along a plane direction orthogonal to the central axis line of the hairspring, but in the height direction parallel to the central axis line. It does not have a mechanism for moving the outer end of the hairspring along. For this reason, when adjusting the height of the outer end portion of the hairspring, it is necessary to change the shape of the hairspring using tweezers or the like, which requires a high level of skill. Therefore, there has been a demand for a structure in which the beard can be easily moved in a desired direction regardless of the skill or skill of the worker.

Therefore, an object of the present invention is to provide a balance spring adjusting mechanism capable of easily adjusting the beard holding force in a desired direction, a balance balance receiving unit including the balance spring adjusting mechanism, a movement and a timepiece.

In order to solve the above-mentioned problems, the hairspring adjusting mechanism according to one aspect of the present invention has a hairspring formed in a spiral shape, and an outer end portion of the hairspring is connected, and is parallel to the central axis of the hairspring. A whisker capable of moving in a first direction along a first axis and rotatable in a second direction about the first axis, a whisker receiver connected to a balance with hairspring, and the whisker in the first direction. A beard holding member which is movably held and is rotatably supported in the second direction, and a movement of the beard holding member in the first direction relative to the beard holding member is restricted by contacting the beard holding member. And a beard holding member .

According to this configuration, the beard holding can be adjusted along the first direction and the second direction of the hairspring. Accordingly, the outer end portion of the balance spring held by the beard can be rotated along the second direction and moved along the first direction. Therefore, it is possible to adjust the position of the hairspring by moving the whiskers in at least two directions of the first direction and the second direction.
Therefore, it is possible to provide a balance spring adjusting mechanism capable of easily adjusting the beard holding force in a desired direction.
Further, as compared with the conventional technique, the whisker can be positioned regardless of the skill and skill of the operator, which facilitates workability during manufacturing and improves product quality. It can be maintained in a stable and good state.

According to this structure, the beard-bearing receiver rotatably supports the beard-bearing retainer, and the beard-bearing retainer holds the beard-bearing movably in the first direction. Furthermore, the beard holding member restricts the movement of the beard in the first direction with respect to the beard holding member. As a result, when the beard holding member is rotated while the movement of the beard holding member is restricted by the beard holding member, the beard holding member rotates integrally with the beard holding member with respect to the beard holding member. Therefore, the beard can be moved independently in the first direction and the second direction with respect to the beard receiver.
The beard holder is rotatably supported by the beard holder via the beard holder so as to move independently in the first direction and the second direction. As a result, for example, as compared with the case where the beard holder is directly attached to the beard holder and the beard holder freely moves in the first direction and the second direction with respect to the beard holder, the beard holder is only adjusted in the desired direction. Can be moved. Therefore, by adjusting the first direction and the second direction independently, the adjustment along each direction can be performed more easily, and the workability can be improved.

Further, in the beard-spring-adjusting mechanism, the beard-bearing receiver rotatably supports the beard-holding retainer in the second direction.

According to this configuration, the beard holder can be rotatably attached to the beard holder via the beard holder. Therefore, it is possible to provide a balance spring adjusting mechanism capable of moving the beard in the first direction and the second direction with a simple configuration.

Further, the hairspring adjusting mechanism is provided so as to be overlapped with the beard-bearing receiver, and a guide plate that rotatably supports the beard-holding press in the second direction, and the beard-bearing receiver with respect to the guide plate. The guide plate retainer is provided so as to overlap on the opposite side, and an adjusting member capable of adjusting the distance between the whisker receiver and the guide plate retainer, the guide plate having the adjusting member attached, the central axis When viewed from the axial direction of, the elongated hole is long in the third direction along a straight line connecting the central axis and the first axis.

According to this structure, the guide plate rotatably supports the whisker-holding member and is moved in the third direction along the longitudinal direction of the long hole while being sandwiched between the beard-bearing receiver and the guide-plate pressing member. When the guide plate moves in the third direction, the whisker-holding member and the whiskers move in the third direction together with the guide plate. Thereby, the whiskers can be moved in three directions of the first direction, the second direction, and the third direction with respect to the beard holder. Therefore, the degree of freedom in adjusting the beard can be increased.
The adjusting member clamps the guide plate by the guide plate retainer and the beard holder by adjusting the gap so that the beard holder and the guide plate retainer are close to each other. An adjusting member is attached to the long hole of the guide plate. Therefore, the movement of the guide plate in the third direction can be regulated by adjusting the adjusting member. Further, by adjusting the distance so that the whisker holder and the guide plate retainer are separated from each other, the guide plate can be moved in the third direction while the elongated hole is provided along the adjusting member.

Further, in the hairspring adjusting mechanism, the adjusting member is a pressing screw that is fastened to the whistle-bearing receiver and presses the guide plate holder toward the whisker-bearing side, and the pressing screw is the long hole. Has been inserted into.

According to this configuration, the pressing screw presses the guide plate pressing toward the whisker holding side by being fastened, and the guide plate is sandwiched by the guide plate pressing and the whisker holding. A cap screw is inserted through the long hole of the guide plate. Therefore, by fastening the holding screw, the movement of the guide plate in the third direction can be restricted. Further, by releasing the fastening of the holding screw, the guide plate can be moved along the third direction while the elongated hole is provided along the holding screw.

Further, in the hairspring adjusting mechanism, the whistle-holding fixing member is a whistle-holding screw attached to the whistle-holding presser.

According to this configuration, when the beard holding member is rotated while the beard holding screw is fastened, the beard holding member rotates integrally with the beard holding member with respect to the beard holding member. Thereby, the beard can be moved independently in the first direction and the second direction with respect to the beard receiver. Further, by tightening the beard holding screw, the relative movement between the beard holding press and the beard holding can be suppressed. Therefore, it is possible to provide a hairspring mainspring adjusting mechanism capable of fixing the hairspring holding with a simple configuration.

Further, in the above-mentioned hairspring adjusting mechanism, the beard holding has a pressing surface that comes into contact with the above-mentioned beard holding screw, and in a state where the above-mentioned beard holding screw comes into contact with the above-mentioned pressing surface, together with the above-mentioned beard holding press Rotate in the direction.

According to this configuration, the beard holder has the pressing surface with which the beard holding screw comes into contact, so that the beard holding and the beard holding screw can be easily brought into reliable contact with each other. Further, as compared with the case where the whisker has no pressing surface, it is possible to suppress rotation of the whistle with respect to the whisker presser when fastening the whistle. This can prevent the whisker from rotating unintentionally, especially when it is desired to move the whistle only in the first direction. In addition, the beard holder rotates together with the beard holder presser with the beard holder screw in contact with the pressing surface. Thereby, when it is desired to move the whiskers only in the rotation direction (second direction), it is possible to suppress unintentional movement of the whiskers in the first direction. Therefore, it is possible to move independently in each of the first direction and the second direction, and the workability can be improved.

Further, in the hairspring adjusting mechanism, the outer end portion of the hairspring is provided at a different position in the first direction with respect to the spiral spring main body.

According to this configuration, it is possible to apply to a so-called winding whisker in which the outer end portion is provided at different positions in the first direction with respect to the hairspring main body. Therefore, the versatility of the balance spring adjusting mechanism can be improved.

A balance receiving unit according to one aspect of the present invention includes the above-mentioned hairspring adjusting mechanism.

According to this configuration, since the above-described hairspring adjusting mechanism is provided, the whistle can be moved along the first direction and the second direction of the hairspring.
Therefore, it is possible to provide the balance with hairspring adjustment unit which is provided with the hairspring mainspring adjusting mechanism capable of easily adjusting the beard holding force in a desired direction and which has improved operation accuracy.

Further, the balance with hairspring reception unit includes a balance with a hairspring attached thereto, and the balance with hairspring has an annular balance wheel and a chiller screw attached to the balance with hairspring.

According to this configuration, it can be applied to a so-called free-sprung system in which the moment of inertia of the balance wheel is adjusted by the fastening amount of the chiller screw (projection amount in the radial direction with respect to the balance wheel). Therefore, for example, in the free spranging method which does not use the slow and fast needles, it is possible to provide a balance reception unit capable of accurately adjusting the isochronous shift.

A movement according to one aspect of the present invention includes the balance receiving unit described above.

With this configuration, it is possible to provide a high-performance movement including the balance with hairspring reception unit having the balance-spring mainspring adjusting mechanism capable of easily adjusting the beard holding in a desired direction.

A timepiece according to one aspect of the invention includes the movement described above.

According to this configuration, the timepiece includes the above-described movement, and the movement includes the above-described hairspring adjusting mechanism. Therefore, it is possible to adjust the isochronous shift by moving the whisker along the first and second directions of the hairspring.
Therefore, it is possible to provide a timepiece which is provided with a balance spring adjusting mechanism capable of easily adjusting the beard holding in the first direction and the second direction, and which can easily adjust the isochronous shift.

According to the present invention, it is possible to provide a balance spring adjusting mechanism capable of easily adjusting the beard holding force in a desired direction, a balance receiving unit, a movement and a timepiece having the balance balance adjusting mechanism.

The external view of the timepiece which concerns on 1st Embodiment. The top view which looked at the movement which concerns on 1st Embodiment from the front side. The top view which looked at the balance receiving unit which concerns on 1st Embodiment from the front side. The perspective view of the balance receiving unit which concerns on 1st Embodiment. Sectional drawing which follows the VV line of FIG. The perspective view of the balance receiving unit which concerns on 2nd Embodiment. The top view which looked at the balance receiving unit which concerns on 2nd Embodiment from the front side. The top view of the balance with hairspring receiving unit which abbreviate|omitted illustration of the guide plate pressing of FIG. Sectional drawing which follows the IX-IX line of FIG. Sectional drawing which follows the XX line of FIG. The top view which looked at the balance receiving unit which concerns on 3rd Embodiment from the front side. Sectional drawing which follows the XII-XII line of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
(clock)
FIG. 1 is an external view of a timepiece 1 according to the first embodiment.
The watch 1 includes a watch case 12 having a case lid (not shown) and a glass 11, a movement 2, a dial 13 having a scale or the like indicating information relating to time, various hands (hour hand 14, minute hand 15 and second hand 16). Etc. are incorporated and configured.

(Movement)
FIG. 2 is a plan view of the movement 2 according to the first embodiment viewed from the front side. In FIG. 2, in order to make the drawing easy to see, some of the timepiece components constituting the movement 2 are omitted, and each timepiece component is illustrated in a simplified manner. Further, in the following description, the glass 11 side (the dial 13 side) of the watch case 12 (see FIG. 1) is referred to as the “back side” of the movement 2 with respect to the main plate 17 constituting the substrate of the movement 2 and the case lid side. The (opposite side of the dial 13) is referred to as the “front side” of the movement 2.

The movement 2 includes a main plate 17, an unillustrated front train wheel including a barrel wheel, a second wheel, a third wheel and a fourth wheel, and an escapement governor 3 for controlling the rotation of the front wheel train. Prepare The illustrated movement 2 is an example of a movement for a self-winding timepiece having a rotary weight. However, the movement is not limited to this case, and may be a movement for a hand-wound type watch by the winding stem 18.
The second hand 16 shown in FIG. 1 rotates based on the rotation of the fourth wheel and rotates at a rotational speed controlled by the escapement governor 3, that is, one rotation per minute. The minute hand 15 rotates based on the rotation of the center wheel 2 or the rotation of the minute wheel that rotates with the rotation of the center wheel 2, and at the same time as the rotation speed regulated by the escapement governor 3, that is, one hour. Rotate once. The hour hand 14 rotates based on the rotation of the hour wheel that rotates with the rotation of the center wheel & pinion via the back wheel of the day, and the rotation speed regulated by the escapement governor 3, that is, 12 hours or It makes one revolution in 24 hours.

The escapement governor 3 includes an escape wheel and pallet fork (not shown) that mesh with a fourth wheel and wheel balance receiving unit 4. Uncle escapes the escape wheel. The balance with hairspring receiving unit 4 is equipped with a balance with hairspring 5 that operates regularly in a fixed cycle.

(Temp receiving unit)
FIG. 3 is a plan view of the balance receiving unit 4 according to the first embodiment as viewed from the front side. FIG. 4 is a perspective view of the balance receiving unit 4 according to the first embodiment. FIG. 5 is a sectional view taken along the line VV of FIG.
As shown in FIGS. 3 to 5, the balance with hairspring receiving unit 4 includes a balance with hairspring 5, a balance with hairspring 6 and a balance spring adjusting mechanism 7.

As shown in FIGS. 3 and 5, the balance with hairspring 5 includes a balance 21, a balance wheel 22, and a balance spring 23. The balance 21 is rotatable about the central axis C. The balance stem 21 is rotatably supported by a balance bridge 6 which will be described later in detail through a bearing 36.
In the following description, a direction along the central axis C of the balance 21 may be referred to as an axial direction, a direction orthogonal to the central axis C may be referred to as a radial direction, and a direction that surrounds the central axis C may be referred to as a circumferential direction.
The balance wheel 22 includes a hub portion 24 fixed to the balance 21 by press fitting or the like, an annular rim portion 25 surrounding the hub portion 24 from the outside in the radial direction, and a connection connecting the hub portion 24 and the rim portion 25. And a section 26. A chill screw 27 is attached to the rim portion 25 of the balance wheel 22. In the present embodiment, four chiller screws 27 are provided at equal intervals along the circumferential direction of the balance wheel 22.

The balance spring 23 is arranged between the balance 21 and the balance wheel 22. The hairspring 23 is a flat whisker wound along the Archimedes curve and having a spiral shape when viewed from the axial direction. The inner end portion 28 of the balance spring 23 is connected to the balance 21 via a bead 31 (see FIG. 5). The outer end portion 29 of the balance spring 23 is connected to a balance 53 of the balance spring adjusting mechanism 7, which will be described in detail later. The outer end portion 29 of the balance spring 23 is arranged at a different axial position with respect to the spiral spring main body 30 and the inner end portion 28 which are formed in a spiral shape. Specifically, the outer end portion 29 of the hairspring main body 23 is located on the front side in the axial direction (the balance bridge 6 side described later) with respect to the hairspring main body 30 and the inner end portion 28.

The balance 21 rotates forward and backward around the central axis C with a constant vibration cycle by the power transmitted from the balance spring 23. One end 21a (front side end) in the axial direction of the balance stem 21 is supported by the balance bridge 6 via a bearing 36, and the other end 21b (back side end) is formed on a main plate 17 (see FIG. 2). It is supported by a bearing (not shown). The other end 21b of the balance 21 is provided with a cylindrical swing seat 19 (see FIG. 5) that is linked to the aforementioned pallet fork.

As shown in FIG. 4, the balance with bridge 6 is arranged on the front side of the balance with hairspring 5 in the axial direction. The balance bridge 6 has a mounting base 35, a bearing 36, and a beard holder 37.
The mounting base 35 extends from the central axis C toward both sides in the radial direction when viewed in the axial direction. The mounting base 35 is formed in a flat plate shape with the axial direction as the thickness direction. Both ends of the mounting base 35 in the extending direction are formed in an arc shape matching the shape of the watch case 12 (see also FIG. 2 ). The mounting base 35 is formed with a plurality of mounting holes 38 penetrating in the axial direction. The balance receiving unit 4 is fixed to the main plate 17 (see FIG. 2) via fixing screws (not shown) inserted in the mounting holes 38, respectively. The attachment base 35 has a central hole 39 formed coaxially with the central axis C. As shown in FIG. 5, a portion of the mounting base portion 35 that forms the outer peripheral portion of the central hole 39 is a bearing tubular portion 40. The bearing tubular portion 40 is formed on the back side of the mounting base portion 35 so as to be lowered by one step.

The bearing 36 is a so-called vibration resistant bearing, and includes a bearing frame 43, a hole stone 44, and a jewel 45.
The bearing frame 43 is press-fitted into the bearing tubular portion 40 from the front side in the axial direction. As a result, the bearing frame 43 is arranged coaxially with the central axis C and is fixed to the balance bridge 6.
The hole stone 44 is mounted in the bearing frame 43. The hole stone 44 rotatably supports one end portion 21a of the balance 21.
The jewel 45 is arranged so as to overlap the hole 44 and supports one end 21a of the balance 21 from the front side. On the stone 45, a stone pressing spring (not shown) that biases the stone 45 toward the balance 21 is arranged in an overlapping manner.
The configuration of the bearing 36 is an example, and the configuration is not limited to the above configuration as long as the balance 21 can be rotatably supported.

As shown in FIG. 5, the whisker holder 37 is externally fitted to the bearing tubular portion 40 of the mounting base portion 35 via a seat portion 41 provided on the outer peripheral portion of the bearing tubular portion 40. As shown in FIG. 4, the beard holder 37 has a grip portion 46 and a beard arm 47 connected to the grip portion 46. The grip portion 46 is formed in a C shape in a plan view as seen from the axial direction. The grip portion 46 slips with respect to the bearing tubular portion 40 when a predetermined rotational torque is applied. As a result, the beard holder 37 can rotate around the central axis C.

The beard holding arm 47 is provided outside the grip portion 46 in the radial direction. Specifically, the whisker arm 47 has a base portion 48 that extends radially outward from the outer peripheral portion of the grip portion 46, and an extension portion 49 that extends from the outer diameter side end portion of the base portion 48 toward one side in the circumferential direction. And are formed in an L shape. When viewed from the axial direction, the gripping portion 46 and the beard holding arm 47 form a U-shaped groove 50 that opens to one side in the circumferential direction.

(Hair balance mainspring adjustment mechanism)
The balance spring adjusting mechanism 7 includes the balance spring 23 described above, a balance holding 53, a balance holding press 54, and a balance holding screw 55 (bearing fixing member in claims).
As shown in FIG. 5, the beard holder 53 holds the outer end portion 29 of the hairspring 23. The whisker 53 is formed in a columnar shape centered on a first axis O parallel to the central axis C. The beard 53 is arranged in a U-shaped groove 50 formed by the grip 46 and the beard arm 47. The whisker 53 has a mounting surface 56 and a pressing surface 57 whose outer peripheral portion is partially flat. The attachment surface 56 is provided at the end of the beard 53 on the back side in the first direction D1. The outer end portion 29 of the balance spring 23 is attached to the attachment surface 56. The pressing surface 57 is provided on the front side in the first direction D1 with respect to the mounting surface 56.

The beard holding member 54 is supported by the beard holding member 37. The beard holding member 54 is formed in a cylindrical shape centered on the first axis O. A step portion extending along the circumferential direction of the outer peripheral portion is formed on the outer peripheral portion of the beard holding member 54. The gripping portion 46 and the beard holding arm 47 are inserted in the step portion. As a result, the beard holding member 54 is held between the gripping portion 46 and the beard holding arm 47. The above-described beard support 53 is inserted into the inner peripheral portion of the beard support 54. Therefore, the beard support 53 is held so as to be movable in the first direction D1 with respect to the beard support 54.
The beard holding member 54 is rotatably supported in the second direction D<b>2 (see FIG. 3) around the first axis O with respect to the beard holder 37 while being sandwiched by the beard holder 37. Therefore, the beard support 53 held by the beard support 37 moves in the first direction D1 with respect to the beard support 54 and is rotatable in the second direction D2 together with the beard support 54.

As shown in FIG. 4, a concave groove 58 into which a tool such as a flat-blade screwdriver can be inserted is formed on the end surface on the front side in the axial direction of the beard holding member 54. The groove 58 is recessed from the front end surface toward the back side. The groove 58 is formed in a straight line passing through the first axis O when viewed from the axial direction. By inserting the tool into the groove 58 and turning the tool, the whisker-holding press 54 rotates in the second direction D2.
As shown in FIG. 5, a screw hole 59 is formed on the outer peripheral portion of the beard holding member 54. The screw hole 59 is formed along the radial direction of the first axis O. The screw hole 59 connects the inner peripheral portion and the outer peripheral portion of the whisker-holding press 54. A female screw is formed on the inner peripheral portion of the screw hole 59.

The beard holding screw 55 is inserted into the screw hole 59 of the beard holding press 54. The beard holding screw 55 is screwed into the screw hole 59 and is movable along the radial direction of the first axis O. The tip portion 55 a of the beard holding screw 55 located on the first axis O side contacts the pressing surface 57 formed on the beard holding 53. The beard holding screw 55 contacts the pressing surface 57 of the beard holding 53 to restrict the movement of the beard holding 53 with respect to the beard holding press 54 in the first direction D1.

Specifically, when the beard holding screw 55 is turned in the fastening direction and the tip portion 55 a comes into contact with the pressing surface 57 of the beard holding 53, the beard holding 53 is pressed by the beard holding press 54. As a result, the relative movement of the beard holding press 54 and the beard holding 53 is restricted. When the beard holding member 54 is rotated in the second direction D2 with respect to the beard holding member 37 in this state, the beard holding member 53 rotates in the second direction D2 together with the beard holding member 54. On the other hand, when the tip portion 55a is separated from the pressing surface 57 of the whisker 53 by turning the whistle holding screw 55 in the releasing direction, the whistle holding 53 can move in the first direction D1 with respect to the whisker holding press 54.

(Action, effect)
Next, operations and effects of the above-described hairspring adjusting mechanism 7, balance with hairspring receiving unit 4, movement 2 and timepiece 1 will be described.
According to the balance spring adjusting mechanism 7 of the present embodiment, the beard holding 53 can be adjusted along the first direction D1 and the second direction D2 of the balance spring 23. As a result, the outer end portion 29 of the balance spring 23 held by the beard holder 53 can be rotated along the second direction D2 and moved along the first direction D1. Therefore, it is possible to adjust the position of the hairspring 23 by moving the beard 53 in at least two directions of the first direction D1 and the second direction D2.
Therefore, it is possible to provide the balance spring adjusting mechanism 7 capable of easily adjusting the beard holding 53 in a desired direction.

Further, as compared with the conventional technique, the beard 53 can be aligned regardless of the skill and skill of the operator, which facilitates workability during manufacturing and improves product quality. Can be maintained in a stable and good state.

The beard holder 37 rotatably supports the beard holder 54, and the beard holder 54 holds the beard holder 53 movably in the first direction D1. Furthermore, the beard holding screw 55 (bearing holding member in the claims) restricts the movement of the beard holding 53 in the first direction D1 with respect to the beard holding press 54. As a result, when the beard holding member 54 is rotated while the movement of the beard holding member 53 is restricted by the beard holding screw 55, the beard holding member 53 rotates integrally with the beard holding member 54 with respect to the beard holding member 37. Therefore, the beard support 53 can be moved independently of the beard support 37 in the first direction D1 and the second direction D2.

The beard support 53 is rotatably supported by the beard support 37 via the beard support 54, and thus independently moves in the first direction D1 and the second direction D2. Thereby, for example, the beard holder 53 is directly attached to the beard holder 37, and the beard holder 53 is desired to be adjusted as compared with the case where the beard holder 53 freely moves in the first direction D1 and the second direction D2 with respect to the beard holder 37. The beard holder 37 can be moved only in the direction. Therefore, by independently adjusting the first direction D1 and the second direction D2, the adjustment along each direction can be more easily performed, and thus workability can be improved.

The beard holding member 54 is supported rotatably in the second direction D2 with respect to the beard holding member 37 connected to the balance with hair bridge 6. Accordingly, the beard support 53 can be rotatably attached to the beard support 37 via the beard support 54. Therefore, the hairspring adjusting mechanism 7 capable of moving the whistle 53 in the first direction D1 and the second direction D2 with a simple configuration can be provided.

In the present embodiment, the beard holding screw 55 is used as the beard holding fixing member. Therefore, when the whisker-holding press 54 is rotated with the whistle-holding screw 55 fastened, the whisker-holding 53 rotates integrally with the whisker-holding press 54 with respect to the beard-bearing receiver 37. Therefore, the beard support 53 can be moved independently of the beard support 37 in the first direction D1 and the second direction D2. Further, the beard holding screw 55 is attached to the beard holding press 54. Thus, by tightening the beard holding screw 55, relative movement between the beard holding press 54 and the beard holding 53 can be suppressed. Therefore, the hairspring main body adjusting mechanism 7 capable of fixing the hairspring 53 with a simple structure can be provided.

Since the beard support 53 has the pressing surface 57 with which the beard support screw 55 abuts, the beard support 53 and the beard support screw 55 can be easily brought into reliable contact with each other. Further, as compared with the case where the whisker 53 does not have the pressing surface 57, it is possible to suppress the whistle 53 from rotating with respect to the whisker presser 54 when the whistle holding screw 55 is fastened. This can prevent the whisker 53 from rotating unintentionally, especially when it is desired to move the whistle 53 only in the first direction D1. Further, the whisker 53 rotates together with the whisker presser 54 with the whistle holding screw 55 in contact with the pressing surface 57. This can prevent the whisker 53 from unintentionally moving in the first direction D1 particularly when it is desired to move the whistle 53 only in the rotation direction (second direction D2). Therefore, it is possible to move independently in each of the first direction D1 and the second direction D2, and the workability can be improved.

The outer end portion 29 of the balance spring main body 23 is provided at a position different from the balance mainspring main body 30 in the first direction D1 (axial direction). As a result, the present invention can be applied to a so-called rolled-up whisker, in which the position of the outer end portion 29 is different from the hairspring main body 30. Therefore, the versatility of the balance spring adjusting mechanism 7 can be improved.

According to the balance with hairspring receiving unit 4 of the present embodiment, since the above-mentioned hairspring main body adjusting mechanism 7 is provided, the hairspring 53 can be moved along the first direction D1 and the second direction D2 of the hairspring main body 23.
Therefore, it is possible to provide the balance with hairspring receiving unit 4 which is provided with the balance spring adjusting mechanism 7 capable of easily adjusting the whistle 53 in a desired direction and which has improved operation accuracy.

A balance screw 27 is provided on the balance wheel 22. Accordingly, it can be applied to a so-called free spranging method in which the moment of inertia of the balance wheel 22 is adjusted by the fastening amount of the chiller screw 27 (the amount of protrusion in the radial direction with respect to the balance wheel 22). Therefore, for example, in the free spranging method which does not use the slow and fast needles, it is possible to provide the balance reception unit 4 capable of accurately adjusting 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 with hairspring receiving unit 4 having the balance spring adjusting mechanism 7 capable of easily adjusting the whisker 53 in a desired direction.

According to the timepiece 1 of this embodiment, the timepiece 1 includes the above-described movement 2, and the movement 2 includes the above-described hairspring adjusting mechanism 7. Therefore, by moving the beard holder 53 along the first direction D1 and the second direction D2 of the hairspring 23, the isochronous deviation can be adjusted.
Therefore, it is possible to provide the timepiece 1 including the balance spring adjusting mechanism 7 capable of easily adjusting the whisker 53 in the first direction D1 and the second direction D2, and easily adjusting the isochronous shift.

(Second embodiment)
Next, a second embodiment according to the present invention will be described. FIG. 6 is a perspective view of the balance receiving unit 4 according to the second embodiment. FIG. 7 is a plan view of the balance receiving unit 4 according to the second embodiment as viewed from the front side. FIG. 8 is a plan view of the balance reception unit 4 in which the guide plate retainer 261 of FIG. 7 is omitted. FIG. 9 is a sectional view taken along line IX-IX in FIG. 7. FIG. 10 is a sectional view taken along line XX of FIG. 7. In the second embodiment, in addition to the first direction D1 and the second direction D2, the whisker 53 is movable in the third direction D3 along the radial direction of the central axis C, and the first embodiment described above. It's different. Further, in the second embodiment, the balance wheel 22 is formed without the flicker screw 27 (see FIG. 4 ).

As shown in FIG. 6 and FIG. 7, the balance spring adjusting mechanism 7 of the second embodiment has a balance spring 223, a beard holding 53, a beard holding press 54, a guide plate 260, a guide plate press 261, and a presser. A screw 262 (the adjusting member in the claims). The configurations of the beard support 53 and the beard support 54 in the second embodiment are the same as the configurations of the beard support 53 and the beard support 54 in the first embodiment described above. Therefore, in the second embodiment, only the differences from the first embodiment will be described, and detailed description of the same configurations as the first embodiment will be omitted.

In the second embodiment, the outer end portion 29 of the balance spring 223 is arranged at the same position as the balance spring main body 30 in the axial direction. The outer end portion 29 of the balance spring 223 is an arc-shaped portion 263 that bulges outward in the radial direction.
The beard holding member 54 is connected to the beard holding member 37 via a guide plate 260 described later (see FIG. 10).

As shown in FIGS. 6 and 8, the whisker holder 37 of the second embodiment has a whisker arm 247 that extends from the grip portion 46 toward the outside in the radial direction and is then spaced apart in the circumferential direction. A U-shaped groove 250, which is open outward in the radial direction when viewed from the axial direction, is formed in the beard holder 37 by the beard arm 247. As shown in FIG. 8, each of the beard holding arms 247 has a fastening hole 264. The fastening hole 264 is a circular hole that penetrates each whisker arm 247 in the axial direction. A female screw is formed on the inner peripheral portion of the fastening hole 264.

As shown in FIGS. 8 and 9, the guide plate 260 is provided so as to overlap with the beard holding arm 247 of the beard holder 37 on the front side. The guide plate 260 is formed in an elliptical plate shape that is long in the circumferential direction when viewed in the axial direction. The guide plate 260 has a support recess 265 and an elongated hole 266.
The support recess 265 is provided at the end of the guide plate 260 facing outward in the radial direction. The support recess 265 is recessed from the outer side to the inner side in the radial direction. The support recess 265 is provided at a position corresponding to the U-shaped groove 250 of the beard holder 37 as viewed in the axial direction. The support recess 265 supports the whisker presser 54 rotatably in the second direction D2 (see FIG. 7).
As shown in FIG. 8, a pair of elongated holes 266 are provided on both sides in the circumferential direction with the supporting recess 265 interposed therebetween. The long hole 266 penetrates the guide plate 260 in the axial direction. The long hole 266 is provided at a position corresponding to the fastening hole 264 of the beard holder 37 as viewed in the axial direction. The pair of elongated holes 266 are formed with the third direction D3 along the straight line L connecting the central axis C and the first axis O as the longitudinal direction when viewed in the axial direction.

As shown in FIG. 9, the guide plate retainer 261 is provided so as to be overlapped with the guide plate 260 on the side opposite to the whisker holder 37. In other words, the guide plate 260 is sandwiched by the whisker holder 37 and the guide plate retainer 261 from both sides in the axial direction. As shown in FIG. 7, the outer shape of the guide plate retainer 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 retainer 261 has a through hole 267 at a position corresponding to the fastening hole 264 of the beard holder 37 as viewed in the axial direction. The through hole 267 penetrates the guide plate retainer 261 in the axial direction.

As shown in FIG. 9, the holding screw 262 is inserted into the fastening hole 264, the long hole 266, and the through hole 267 in a state where the whisker holder 37, the guide plate 260, and the guide plate press 261 are stacked. The holding screw 262 adjusts the distance between the whisker holder 37 and the guide plate holding member 261. Specifically, the holding screw 262 is inserted from the guide plate holding 261 side (front side), and is fastened to the female screw formed on the whisker 37. As a result, the holding screw 262 fastens the whisker holder 37, the guide plate 260, and the guide plate holder 261 together.

With the balance spring adjusting mechanism 7 formed in this way, when the holding screw 262 is released, the guide plate 260 is in the third direction D3 which is the longitudinal direction of the long hole 266 with respect to the beard holder 37 and the guide plate holder 261. Can be moved to. When the guide plate 260 moves in the third direction D3, the beard support 53 moves in the third direction D3 together with the beard holding press 54 connected to the guide plate 260.
After the guide plate 260 is moved to the desired position in the third direction D3, when the holding screw 262 is turned in the fastening direction, the guide plate holding member 261 moves to the whisker-bearing 37 side by the axial force of the holding screw 262. .. As a result, the guide plate 260 is pressed from both sides in the axial direction by the whisker holder 37 and the guide plate retainer 261 and its movement in the third direction D3 is restricted.

Here, in addition to the above-mentioned hairspring adjusting mechanism 7, in the second embodiment, the shape of the balance with hairspring 6 is different from that in the above-described first embodiment. Specifically, in the second embodiment, the mounting base portion 35 of the balance with hairspring 6 extends in one direction from the central axis C when viewed in the axial direction. The mounting base 35 is formed in an arc shape that curves along the circumferential direction from the central axis C toward the outside in the radial direction.

According to the second embodiment, the guide plate 260 rotatably supports the beard holding member 54 while being sandwiched between the beard holding member 37 and the guide plate holding member 261, and along the longitudinal direction of the long hole 266. Move in the third direction D3. Further, the holding screw 262 is used as an adjusting member capable of adjusting the distance between the beard holder 37 and the guide plate holding member 261. When the guide plate 260 moves in the third direction D3, the whisker-holding press 54 and the whiskers 53 move together with the guide plate 260 in the third direction D3. As a result, the whiskers 53 can be moved with respect to the whiskers 37 in three directions including the first direction D1, the second direction D2, and the third direction D3. Therefore, it is possible to increase the degree of freedom in adjusting the beard 53.
The presser screw 262 (adjustment member in the claims) adjusts the gap so that the whisker holder 37 and the guide plate holder 261 are close to each other, so that the guide plate 260 is sandwiched by the guide plate holder 261 and the beard holder 37. To do. Specifically, the pressing screw 262 presses the guide plate pressing toward the whisker holding side by being fastened, and holds the guide plate by the guide plate pressing and the whisker holding. A holding screw 262 is inserted into the long hole 266 of the guide plate 260. Therefore, by fastening the holding screw 262, the movement of the guide plate 260 in the third direction D3 can be regulated. Further, by adjusting the interval so that the whisker holder 37 and the guide plate holder 261 are separated from each other, that is, the fastening of the holding screw 262 is released, the guide plate 260 is moved along the long hole 266 along the holding screw 262. It can be moved along the third direction D3.

(Third Embodiment)
Next, a third embodiment according to the present invention will be described. FIG. 11 is a plan view of the balance with hairspring receiving unit 4 according to the third embodiment as viewed from the front side. 12 is a sectional view taken along line XII-XII in FIG. The third embodiment differs from the first embodiment described above in that the balance with hairspring receiving unit 4 includes a slow/fast needle 371.

As shown in FIGS. 11 and 12, in the third embodiment, the outer end portion 29 of the balance spring main body 323 is arranged at the same position as the balance spring main body 30 in the axial direction. The outer end portion 29 of the balance spring 323 is an arcuate portion 363 that bulges outward in the radial direction.
The balance receiving unit 4 of the third embodiment has a fine movement slow/fast needle lever 370 and a slow/fast needle 371.

The fine-movement slow-and-quick needle lever 370 is rotatably attached to the bearing frame 43 (see FIG. 12) around the central axis C. The fine movement abrupt needle lever 370 includes a fitting portion 372 fitted to the bearing frame 43, and an engaging fork 373 formed in a bifurcated shape that extends radially outward from the fitting portion 372 and branches in the circumferential direction. , With. An adjustment pin 374 is arranged inside the engagement fork 373. As shown in FIG. 12, the adjustment pin 374 is rotatably fitted inside the bearing bushing 375 provided on the balance with hair bridge 6. The adjustment pin 374 has a shaft portion 376 coaxial with the bearing bushing 375, and a head portion 377 that is integrally formed at the front end of the shaft portion 376 and that is eccentric to the shaft portion 376. The head portion 377 slidably contacts the inner surface of the engagement fork 373. Therefore, by rotating the adjusting pin 374 with respect to the bearing bushing 375, it is possible to rotate the entire fine movement grading needle lever 370 around the central axis C of the balance with hairspring 5.

As shown in FIG. 11, the slow-moving needle 371 includes a slow-moving needle body 378, a whiskers 379, and a whiskers 380.
The slow/fast needle body 378 is rotatable around the central axis C. The slow-and-quick needle body 378 has a base portion 381 that surrounds the fitting portion 372 of the fine movement slow-and-quick needle lever 370 from the outside in the radial direction, and a slow-and-quick needle arm 382 that extends outward from the base portion 381 in the radial direction.
The whisker bar 379 and the whisker bridge 380 are attached to the slow and fast needle arm 382. The beard bar 379 and the beard bridge 380 are arranged so as to face each other in the radial direction with the arcuate portion 363 of the hairspring 323 interposed therebetween. Specifically, the whisker bar 379 is located inside the arcuate portion 363 in the radial direction. The whisker bridge 380 is located radially outside the arcuate portion 363. The ends of the beard rod 379 and the beard receiver 380, which are located on the back side, project below the arcuate portion 363 of the hairspring 323. The distance between the beard bar 379 and the beard receiver 380 is adjustable. Thereby, the swing width of the hairspring 323 is adjusted.

In the third embodiment, the whisker receiver 37 includes a grip portion 46 (see FIG. 3) fitted onto the bearing tubular portion 40 (see FIG. 5), and extends radially outward from the grip portion 46 and extends in the circumferential direction. A bifurcated beard-bearing arm 347 that diverges. The balance spring adjusting mechanism 7 is rotatably supported with respect to the balance holding arm 347 between the pair of fork holding arms 347. Since the configuration of the hairspring adjusting mechanism 7 in the third embodiment is the same as the configuration of the hairspring adjusting mechanism 7 in the first embodiment, detailed description thereof will be omitted below.

According to the third embodiment, the balance-spring adjusting mechanism 7 described above can be applied to the balance with hairspring receiving unit 4 having the slow/fast needle 371. Therefore, in addition to the same operation and effect as those of the above-described first embodiment, the degree of freedom of adjustment and the accuracy of adjustment can be further improved by adjusting the slow/fast needle 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-described embodiment, the beard-holding screw 55 is used as the beard-holding fixing member in order to regulate the movement of the beard-holding 53 with respect to the beard-holding press 54 in the first direction D1, but the present invention is not limited to this. .. For example, a pin may be inserted instead of the beard holding screw 55 to restrict the movement of the beard holding 53 in the first direction D1.

Similarly, in the second embodiment, the holding screw 262 is used as the adjusting member, but a member other than the screw may be used to adjust the distance between the beard holder 37 and the guide plate holding member 261.
The shape of the beard holder 37 that rotatably holds the beard holder 54 is not limited to the shape described above. For example, an annular hole penetrating the whisker arm 47 in the axial direction may be formed, and the whisker presser 54 may be inserted inside the hole.
The shape of the attachment base portion 35 of the balance bridge 6 is not limited to the shapes of the first to third embodiments described above.

In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with known constituent elements within the scope of the present invention, and it is also possible to appropriately combine the modified examples described above.

1 watch 2 movement 4 balance reception unit 5 balance 6 balance reception 7 beard mainspring adjusting mechanism 22 balance wheel 23, 223, 323 balance mainspring 27 chiller screw 29 outer end portion 30 mainspring mainspring 37 beard support 53 beard support 54 beard support 55 Beard holding screw (beard holding member)
57 pressing surface 260 guide plate 261 guide plate retainer 262 retainer screw (adjusting member)
266 slot C central axis O first axis D1 first direction D2 second direction D3 third direction

Claims (11)

A hairspring that is formed in a spiral shape,
An outer end of the hairspring is connected , movable in a first direction along a first axis parallel to the central axis of the hairspring, and a whisker capable of rotating in a second direction around the first axis,
A whisker holder connected to the balance bridge,
While holding the beard movably in the first direction, a beard holding press rotatably supported in the second direction,
A beard holding member that regulates movement of the beard in the first direction relative to the beard holding member by contacting the beard holding;
Adjustable hairspring mechanism. The beard holder bridge is hairspring mechanism of claim 1 for rotatably supporting the stud retainer with the second direction. A guide plate that is provided so as to be overlapped with the beard holding member and that rotatably supports the beard holding member in the second direction,
A guide plate retainer that is provided so as to be overlapped with the guide plate on the opposite side to the beard holding member,
An adjusting member capable of adjusting a distance between the whisker receiving member and the guide plate retainer,
Equipped with
The guide plate, the adjustment member is mounted, as viewed from the axial direction of the central axis, according to claim 1 having a long length hole in the third direction along a straight line connecting the central axis and said first axis Hairspring adjustment mechanism. The adjusting member is a cap screw that is fastened to the beard holding member and presses the guide plate holder toward the beard holding member,
The balance spring adjusting mechanism according to claim 3 , wherein the holding screw is inserted into the elongated hole. The stud fixing member is hairspring adjustment mechanism according to any one of claims 1 to 4 is a stud screw which is attached to the stud retainer. The beard holding has a pressing surface that abuts the beard holding screw,
The balance spring adjusting mechanism according to claim 5 , wherein the balance spring adjusting mechanism rotates in the second direction together with the balance holding member in a state where the balance holding screw is in contact with the pressing surface. The hairspring according to any one of claims 1 to 6 , wherein the outer end portion of the hairspring is provided at a position different from the first direction with respect to the spiral hairspring main body formed in a spiral shape. Adjustment mechanism. A balance receiving unit including the balance spring adjusting mechanism according to any one of claims 1 to 7 . A balance with a hairspring is attached,
The balance is
A circular balance wheel,
A chiller screw attached to the balance wheel,
10. The balance receiving unit according to claim 8 , which comprises: Movement with the balance bridge unit according to claim 8 or claim 9. A timepiece comprising the movement according to claim 10 .

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