JP7280732B2 - Watch parts, watch movements and watches - Google Patents

Description

The present invention relates to watch components, watch movements and timepieces.

A mechanical watch has an escapement/governing mechanism for controlling the rotation of a barrel wheel, second wheel, third wheel and fourth wheel that constitute a front wheel train. A typical escapement/governing mechanism has an escape wheel and a balance. The balance has a balance wheel, a balance, a hairspring, and a hairball. The balance shaft is the center of rotation of the balance wheel. The hairball secures the hairspring to the spring. A hairspring is formed in a spiral shape, and expands and contracts to reciprocate the balance wheel. The hairspring is fixed to the hairball by caulking, welding, or the like (see Patent Documents 1 and 2).

U.S. Pat. No. 3,121,307 JP 2018-036249 A

However, when the hairspring is fixed to the hairspring by crimping, it is necessary to select and use the hairspring according to variations in the shape of the hairspring. On the other hand, when the hairspring is fixed to the hairball by welding or the like, the hairspring is fixed at an angle to the hairball, which may affect the mechanical properties of the escapement/speed control mechanism. .

An object of one aspect of the present invention is to provide a timepiece component, a timepiece movement, and a timepiece that are easy to manufacture and that can fix a hairspring to a hairspring in a correct posture.

(1) One aspect of the present invention includes a hairspring externally fixed to a spring and a hairspring fixed to the hairspring, wherein the hairball is tilted in a direction in which the central axis of the hairspring tilts. A timepiece component having a regulating convex portion for regulating a change in posture of the balance spring.

According to the above configuration, since the hairspring has the regulating projection, when the hairspring is joined to the hairball, the regulating projection regulates the change in posture of the hairspring in the direction in which the central axis is tilted. Therefore, the hairspring can be fixed to the hairball in a correct posture.
According to the above configuration, unlike the case where the hairspring is crimped and fixed, the hairspring can be fixed to the hairball even when the shape of the hairspring varies. Therefore, it is not necessary to select and use a plurality of hairsprings according to the shape of the hairspring, which facilitates manufacturing.

(2) A plurality of the restricting protrusions are provided, and the plurality of restricting protrusions are located within the balance spring from the first restricting protrusions and the first restricting protrusions when viewed in the axial direction along the central axis. It is preferable to include a second restricting convex portion positioned on the end side.

According to the above configuration, tilting of the balance spring can be restricted over a wide range in the direction around the central axis. Therefore, the hairspring can be fixed to the hairball in a correct posture.

(3) It is preferable that the restricting convex portion is formed with an engaging portion that restricts the hairspring from moving outward in the radial direction of the hairball.

According to the above configuration, tilting of the balance spring can be restricted by the locking portion. Therefore, the hairspring can be fixed to the hairball in a correct posture.

(4) A plurality of the restricting protrusions are provided, and at least one of the plurality of restricting protrusions is formed on one end side of the hairspring in the axial direction of the hairspring. may be formed on the other end side of the hair ball in the axial direction with respect to the hair spring.

According to the above configuration, since the hairspring has the regulating projections on both end sides of the hairspring, it is excellent in terms of the effect of preventing the hairspring from tilting.

(5) It is preferable that the plurality of restricting protrusions are provided at different positions when viewed from the axial direction.

According to the above configuration, it becomes easy to form the restricting convex portion by a molding method such as an electroforming method.

(6) Another aspect of the present invention provides a timepiece movement incorporating the timepiece component.

(7) Still another aspect of the present invention provides a timepiece including the timepiece movement.

According to one aspect of the present invention, manufacturing is easy, and the hairspring can be fixed to the hairball in a correct posture.

1 is an external view of a timepiece according to an embodiment; FIG. It is the top view seen from the front side of the movement. FIG. 2 is a plan view of the balance with the timepiece component according to the first embodiment; FIG. 2 is a plan view showing part of the watch component according to the first embodiment; 1 is a side view showing part of a watch component according to a first embodiment; FIG. FIG. 10 is a side view showing part of a watch component according to a comparative embodiment; FIG. 11 is a plan view showing part of a watch component according to a second embodiment; FIG. 11 is a side view showing part of a watch component according to a second embodiment; FIG. 11 is a plan view showing part of a watch component according to a third embodiment; FIG. 11 is a side view showing part of a watch component according to a third embodiment; FIG. 11 is a cross-sectional view showing part of a watch component according to a third embodiment; FIG. 11 is a plan view showing part of a watch component according to a fourth embodiment; FIG. 11 is a side view showing part of a watch component according to a fourth embodiment; FIG. 11 is a cross-sectional view showing part of a watch component according to a fourth embodiment;

An embodiment of the present invention will be described with reference to the drawings.
In the following, first, a mechanical wristwatch (corresponding to the "clock" in the claims) according to the embodiment and a movement incorporated in this wristwatch (corresponding to the "clock movement" in the claims) will be described. The details of the parts for

[clock]
In general, the mechanical body including the driving part of the watch is called "movement". A dial and hands are attached to this movement, and it is called a "complete" watch when it is placed in a watch case. Of the two sides of the main plate that constitutes the substrate of the watch, the side with the glass of the watch case, that is, the side with the dial is referred to as the "back side" of the movement. Of the two sides of the main plate, the side on which the case back of the watch case is located, that is, the side opposite to the dial is referred to as the "front side" of the movement.

FIG. 1 is an external view of a timepiece 1 according to an embodiment. As shown in FIG. 1, the complete watch 1 of this embodiment has a movement 100 inside a watch case 3 made up of a case back cover (not shown) and a glass 2, and a dial 11 having a scale indicating information about time. and hands including an hour hand 12 indicating the hour, a minute hand 13 indicating the minute, and a second hand 14 indicating the second. The dial 11 has a date window 11a for clearly indicating the date. This allows the clock 1 to check the date in addition to the time.

FIG. 2 is a plan view of the front side of the movement. In FIG. 2, some of the timepiece components that make up the movement 100 are omitted for clarity.
As shown in FIG. 2, a mechanical timepiece movement 100 has a main plate 102 that constitutes a substrate. A winding stem 110 is rotatably incorporated in the winding stem guide hole 102 a of the main plate 102 . The winding stem 110 is axially positioned by a switching device including a setting lever 190 , a bar 192 , a bar spring 194 and a back retainer 196 .
When the winding stem 110 is rotated, the pick wheel 112 is rotated via rotation of a handwheel (not shown). The rotation of the ratchet wheel 112 causes the ratchet wheel 114 and the ratchet wheel 116 to rotate in turn, thereby winding up the mainspring (not shown) housed in the barrel wheel 120 .

The barrel wheel 120 is rotatably supported between the main plate 102 and the barrel bridge 160 . Center wheel & pinion 124 , third wheel & pinion 126 , fourth wheel & pinion 128 and escape wheel & pinion 130 are rotatably supported between main plate 102 and train wheel bridge 162 .
When the barrel wheel 120 rotates due to the restoring force of the mainspring, the rotation of the barrel wheel 120 causes the center wheel & pinion 124, the third wheel & pinion 126, the fourth wheel & pinion 128 and the escape wheel & pinion 130 to rotate in order. The barrel wheel 120, center wheel & pinion 124, third wheel & pinion 126 and fourth wheel & pinion 128 constitute a front train wheel.

When the center wheel & pinion 124 rotates, a pinion (not shown) rotates at the same time, and the minute hand 13 (see FIG. 1) attached to the pinion indicates "minute". In addition, based on the rotation of the cannon pinion, the hour wheel (not shown) rotates through the rotation of the date wheel (not shown), and the hour hand 12 (see FIG. 1) attached to this hour wheel indicates "hour". display.

An escapement/governing device for controlling the rotation of the front train wheel is composed of an escape wheel 130 , an anchor 142 and a balance 10 .
Teeth 130a are formed on the outer circumference of the escape wheel 130 . Ankle 142 is rotatably supported between main plate 102 and ankle support 164 and has a pair of pawl stones 142a and 142b. With one pawl stone 142a of the anchor 142 engaged with the teeth 130a of the escape wheel 130, the escape wheel 130 is temporarily stopped.
The balance 10 reciprocally rotates at a constant cycle to alternately engage and disengage the teeth 130a of the escape wheel 130 with one pawl stone 142a and the other pawl stone 142b of the pallet pallet 142. As shown in FIG. This allows the escape wheel 130 to escape at a constant speed.

[attachment]
FIG. 3 is a plan view of the balance 10 provided with the timepiece component 15 according to the first embodiment. As shown in FIG. 3 , the balance 10 mainly includes a balance wheel 20 , a balance 30 and a timepiece component 15 .

[Balance]
The balance wheel 20 is made of metal such as brass, and has a balance wheel main body 21 formed in a substantially annular shape. The central axis of the balance wheel main body 21 coincides with the central axis O, which is the center of rotation of the balance 10 . A direction along the central axis O is called an “axial direction”.
Four arm portions 23 (23a to 23d) extend radially toward the central axis O from the inner peripheral surface 21a of the balance wheel body portion 21. As shown in FIG. The four arm portions 23a to 23d are formed at approximately equal intervals in the circumferential direction of the balance wheel body portion 21 so as to have a pitch of 90°. The four arm portions 23a to 23d are connected near the central axis O. As shown in FIG. A fitting hole (not shown) coaxial with the central axis O is formed in the connecting portion 25 of the four arm portions 23a to 23d.

[Tenma]
The balance 10 has a balance 30 coaxially with the central axis O. The balance 30 is a rod-shaped member made of metal such as brass. The stem 30 is rotatable around the central axis O. The balance wheel 20 and the balance stem 30 operate integrally.

[Watch parts] (first embodiment)
FIG. 4 is a plan view showing part of the watch component 15. FIG. FIG. 5 is a side view showing part of the watch component. As shown in FIGS. 4 and 5, the watch component 15 includes a hairspring 40 and a hairball 50. As shown in FIGS.
Hereinafter, the vertical positional relationship is provisionally determined according to FIG. That is, the upward direction in FIG. 5 is upward, and the downward direction is downward. The positional relationship defined here does not limit the attitude of the watch component 15 when in use. The vertical direction is also called the height direction. The central axis O is parallel to the vertical direction.

(hairspring)
As shown in FIG. 3 , the hairspring 40 includes a hairspring main body 41 and an arc portion 42 . The balance spring main body 41 is a thin leaf spring made of metal such as iron or nickel. The hairspring 40 is curved in the thickness direction. The hairspring body 41 is spirally formed with a plurality of turns. The arc portion 42 is connected to the end portion of the hairspring main body 41 on the outer peripheral side. An outer peripheral side end portion 42 a of the arc portion 42 is fixed to the barb holder 106 .

The hairspring 40 is fixed to the hairball 50 as will be described later. A central axis C1 of the balance spring 40 coincides with the central axis O. As shown in FIG. A lower edge 40a (first side edge) and an upper edge 40b (second side edge) of the balance spring 40 extend along a plane perpendicular to the axial direction.

As shown in FIG. 5, the height H1 of the hairspring 40 is smaller than the height H2 of the hairball 50. As shown in FIG. The hairspring 40 is positioned higher than the lower end 50 a of the hair ball 50 and lower than the upper end 50 b of the hair ball 50 .

(whiskers)
As shown in FIG. 4 , the bead 50 includes a main body portion 51 and a restricting convex portion 52 . The whiskers 50 are made of nickel, nickel alloy, or the like, for example. The body portion 51 includes an outer fitting fixing portion 53 and a plurality of support portions 54 . The outer fitting fixing portion 53 has an opening 53 a that can be fitted to the stem 30 . The support portion 54 is formed so as to protrude outward in the radial direction of the outer fitting fixing portion 53 from the outer peripheral surface of the outer fitting fixing portion 53 . The support portion 54 has a shape in which the width (dimension of the outer fitting fixing portion 53 in the direction around the axis) decreases radially outward. The plurality of support portions 54 are formed at different positions in the direction around the axis of the outer fitting fixing portion 53 . The plurality of support portions 54 are formed at equal pitches in the direction around the central axis O, for example. In this embodiment, the number of support portions 54 is four, and the four support portions 54 are formed at a pitch of 90° in the direction around the central axis O. As shown in FIG.

A joint portion 44 of the inner peripheral surface 40a of the balance spring 40 is joined to the tip 54a of the support portion 54 by welding (for example, laser welding). The joint 44 is located near the inner peripheral end 43 of the balance spring 40 and closer to the outer peripheral end 42 a (see FIG. 3 ) than the inner peripheral end 43 . More specifically, the balance spring 40 is connected through a welded portion 45 formed at a portion of the upper edge 40b (that is, at one end in the axial direction) while the joint 44 is in contact with the tip 54a of the support portion 54. It is joined to tip 54a.

As shown in FIGS. 4 and 5 , the restricting convex portion 52 is formed to protrude from the outer peripheral surface of the body portion 51 radially outward of the body portion 51 (in the direction away from the central axis O). The restricting protrusion 52 is formed, for example, at a position where at least a part of it overlaps the joint 44 when viewed in the axial direction. As shown in FIG. 5, the restricting convex portion 52 is formed in a plate shape orthogonal to the central axis O. As shown in FIG. The restricting protrusion 52 is formed at a position lower than the balance spring 40 . That is, the restricting convex portion 52 is formed on the lower end side of the hair ball 50 (the other end side in the axial direction) with respect to the hair spring 40 . A facing surface 52 a (upper surface) of the restricting protrusion 52 is perpendicular to the central axis O and faces the lower edge 40 a of the balance spring 40 . The facing surface 52a abuts on or comes close to the lower edge 40a of the balance spring 40 .

In the timepiece component 15 of the first embodiment, since the hairspring 50 has the restricting convex portion 52, when the hairspring 40 is welded to the hairspring 50, the attitude of the hairspring 40 in the direction in which the central axis C1 is tilted. A change is regulated by the regulating convex portion 52 . Therefore, the hairspring 40 can be fixed to the hairball 50 in a correct posture (perpendicular to the axial direction). Therefore, it is possible to avoid adversely affecting the mechanical properties of the escapement/governing mechanism.

In the timepiece component 15, the hair spring 40 can be fixed to the hair ball 50 even when the shape of the hair spring 40 varies, unlike the case where the hair spring is crimped and fixed. Therefore, it is not necessary to select and use a plurality of hairballs 50 according to the shape of the hairspring 40, which facilitates manufacturing.

In order to clarify the effects of the timepiece component 15 of the first embodiment shown in FIG. 5, a timepiece component 415 according to a comparative example was produced as shown in FIG. A watch component 415 of the comparative example differs from the watch component 15 of the first embodiment shown in FIG. As shown in FIG. 6, in the timepiece component 415 of the comparative example, when the balance spring 40 is welded to the hair ball 450, the posture of the balance spring 40 may change in the direction in which the central axis is tilted. Therefore, the hairspring 40 may be fixed to the hairball 450 in an inclined posture.

[Watch parts] (Second embodiment)
FIG. 7 is a plan view showing part of the watch component 115 of the second embodiment. FIG. 8 is a side view showing part of the watch component 115. As shown in FIG. The same reference numerals are assigned to the configurations already described, and the description thereof is omitted.

As shown in FIGS. 7 and 8, watch component 115 includes hairspring 40 and hairball 150 . The bead 150 includes a body portion 51 and a plurality of restricting protrusions 152 . The multiple restricting protrusions 152 include first restricting protrusions 152A and second restricting protrusions 152B. The watch component 115 differs from the watch component 15 of the first embodiment shown in FIGS.
As shown in FIG. 7, of the directions around the central axis O, the direction toward the inner peripheral side end portion 43 of the hairspring 40 is referred to as the "inner peripheral direction D1". Of the directions around the central axis O, the direction opposite to the inner direction D1 is called an "outer direction D2".

As shown in FIG. 7, the first restricting convex portion 152A is formed at a position where at least a portion thereof overlaps the joint portion 44 when viewed in the axial direction. As shown in FIG. 8, the first restricting convex portion 152A is formed in a plate shape perpendicular to the central axis O. As shown in FIG. The first restricting convex portion 152A is formed at a position lower than the balance spring 40. As shown in FIG. A facing surface 152</b>Aa (upper surface) of the first restricting projection 152</b>A is perpendicular to the central axis O and faces the lower edge 40 a of the hairspring 40 . The facing surface 152Aa abuts on or comes close to the lower edge 40a of the balance spring 40 .

As shown in FIG. 7, the second restricting protrusion 152B is located closer to the inner end side of the hairspring 40 than the first restricting protrusion 152A when viewed in the axial direction. That is, the second restricting convex portion 152B is located closer to the inner peripheral direction D1 than the first restricting convex portion 152A.
As shown in FIG. 8, the second restricting convex portion 152B is formed in a plate shape perpendicular to the central axis O. As shown in FIG. The second restricting projection 152B is formed at a position lower than the balance spring 40. As shown in FIG. A facing surface 152Ba (upper surface) of the second restricting protrusion 152B is perpendicular to the central axis O and faces the lower edge 40a of the hairspring 40. As shown in FIG. The facing surface 152Ba abuts on or comes close to the lower edge 40a of the balance spring 40. As shown in FIG.
Note that the number of restricting protrusions is not limited to 1 or 2, and may be any number of 3 or more.

The position of the end of the second restricting projection 152B in the inner circumference direction D1 (the inner circumference end 152Bb) in the direction around the central axis O is the position of the inner circumference side end 43 of the hairspring 40 in the direction around the central axis O. can be matched with This facilitates alignment of the hairspring 40 with respect to the hairball 150 .

In the timepiece component 115 of the second embodiment, similarly to the timepiece component 15 of the first embodiment, when the hairspring 40 is joined to the hairspring 150 by welding, the change in posture of the hairspring 40 is controlled by the restricting protrusion 152 . (152A, 152B). Therefore, the hairspring 40 can be fixed to the hairball 150 in a correct posture (perpendicular to the axial direction).
The timepiece component 115 is easy to manufacture because the hair spring 40 can be fixed to the hair ball 150 even if the shape of the hair spring 40 varies.

Since the watch component 115 includes a plurality of restricting projections 152 (152A, 152B), tilting of the hairspring 40 can be restricted over a wide range in the direction around the central axis O. Therefore, the hairspring 40 can be fixed to the hairball 150 in a correct posture (perpendicular to the axial direction).

[Watch parts] (Third embodiment)
FIG. 9 is a plan view showing part of the watch component 215 of the third embodiment. FIG. 10 is a side view showing part of the watch component 215. FIG. FIG. 11 is a cross-sectional view showing part of the watch component 215. As shown in FIG. The same reference numerals are assigned to the configurations already described, and the description thereof is omitted.

As shown in FIGS. 9 to 11, the watch component 215 includes a hairspring 40 and a hairball 250. As shown in FIGS. The bead 250 includes a body portion 51 and a plurality of restricting protrusions 252 . The multiple restricting protrusions 252 include first restricting protrusions 252A and second restricting protrusions 252B.

As shown in FIG. 11, the first restricting convex portion 252A has a locking portion 253 (first locking portion 253A) that protrudes upward from the facing surface 252Aa (upper surface) at the tip. It differs from the first restricting protrusion 152A (see FIGS. 7 and 8) in the second embodiment. The second restricting convex portion 252B has a locking portion 253 (second locking portion 253B) that protrudes upward from the facing surface 252Ba (upper surface) at the distal end portion. It differs from the restricting protrusion 152B (see FIGS. 7 and 8). The locking portion 253 (253A, 253B) has a height that allows the lower portion of the hairspring 40 (the portion including the lower edge 40a) to be locked. Therefore, it is possible to prevent the balance spring 40 from moving radially outward (in a direction away from the central axis O).

In the watch component 215 of the third embodiment, similarly to the watch component 15 of the first embodiment, the balance spring 40 can be fixed to the hair ball 250 in the correct posture (perpendicular to the axial direction). The timepiece component 215 is easy to manufacture because the hair spring 40 can be fixed to the hair ball 250 even if the shape of the hair spring 40 varies.
Since the timepiece component 215 includes a plurality of restricting projections 252 (252A, 252B), tilting of the hairspring 40 can be restricted over a wide range in the direction around the central axis O. Therefore, the hairspring 40 can be fixed to the hairball 250 in a correct posture (perpendicular to the axial direction).

In the timepiece component 215, the restricting projections 252 (252A, 252B) have the engaging portions 253 (253A, 253B), so tilting of the hairspring 40 as indicated by the phantom lines in FIG. 11 can be restricted. Therefore, the hairspring 40 can be fixed to the hairball 250 in a correct posture (perpendicular to the axial direction).

[Watch parts] (Fourth embodiment)
FIG. 12 is a plan view showing part of the watch component 315 of the fourth embodiment. FIG. 13 is a side view showing part of the watch component 315. FIG. FIG. 14 is a cross-sectional view showing part of the watch component 315. As shown in FIG. The same reference numerals are assigned to the configurations already described, and the description thereof is omitted.

As shown in FIGS. 12 to 14, the watch component 315 includes a hairspring 40 and a hairball 350. As shown in FIGS. Whisker 350 includes body portion 51, first restricting protrusion 152A (see FIGS. 7 and 8), second restricting protrusion 152B (see FIGS. 7 and 8), and third restricting protrusion 352. Prepare.
The watch component 315 differs from the watch component 115 of the second embodiment shown in FIGS. 7 and 8 in that it has a third restricting protrusion 352 .

The third restricting protrusion 352 is formed at a position higher than the balance spring 40 . That is, the third restricting protrusion 352 is formed on the upper end side (one end side) of the hair ball 350 with respect to the hair spring 40 . A facing surface 352 a (lower surface) of the third restricting convex portion 352 is a surface perpendicular to the central axis O and faces the upper edge 40 b of the balance spring 40 . The facing surface 352a abuts on or comes close to the upper edge 40b of the balance spring 40. As shown in FIG.

If the position of the third restricting projection 352 in the circumferential direction of the central axis O differs from that of the first restricting projecting portion 152A and the second restricting projecting portion 152B in the circumferential direction of the central axis O, the first and second restricting projecting portions 152 and the third restricting convex portion 352 can be easily formed by a molding method such as electroforming.

In the watch component 315 of the fourth embodiment, similarly to the watch component 15 of the first embodiment, the balance spring 40 can be fixed to the hair ball 350 in the correct posture (perpendicular to the axial direction). The timepiece component 315 is easy to manufacture because the hair spring 40 can be fixed to the hair ball 350 even if the shape of the hair spring 40 varies.
Since the timepiece component 315 includes a plurality of restricting protrusions 352 (352A, 352B), tilting of the hairspring 40 can be restricted over a wide range in the direction around the central axis O. Therefore, the hairspring 40 can be fixed to the hairball 350 in a correct posture (perpendicular to the axial direction).

Since the timepiece component 315 has the regulating convex portion 152 on the lower side of the hair spring 40 and the third regulating convex portion 352 on the upper side of the hair spring 40, it is excellent in the effect of preventing the hair spring 40 from tilting. .

The technical scope of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. The whiskers may be formed not only by electroforming but also by machining. The restricting convex portion does not have to be integrated with the whiskers. The restricting protrusion may be formed separately from the whisker and joined to the outer surface of the whisker.
The outer shape of the restricting protrusion is not particularly limited, and may be, for example, rectangular, semicircular, semielliptical, or polygonal when viewed from the axial direction.
In the embodiment, laser welding is exemplified as a method of welding the hairspring 40 to the hair ball 50, but the welding method is not limited to laser welding. For example, the hairspring 40 may be welded to the hair ball 50 by arc welding, resistance welding, friction stir welding, or the like.
Although the watch component 315 shown in FIG. 12 has one third restricting protrusion 352, the number of third restricting protrusions may be any number of two or more.

REFERENCE SIGNS LIST 1 watch 15 watch parts 30 balance 40 hair spring 43 inner peripheral end 50 hair ball 52, 152, 252, 352 restricting convex portion 100 movement 152A first restricting convex portion , 152B... second restricting convex portion, 253... locking portion

Claims (6)

A hairball externally fixed to a spring, and a hairspring fixed to the hairball by welding,
the hair ball has a restricting convex portion that restricts a change in posture of the hair spring in a direction in which the central axis of the hair spring is tilted;
A plurality of the regulating protrusions are provided,
at least one of the plurality of restricting protrusions is formed on one end side of the hairspring in the axial direction of the hairspring;
At least one of the restricting protrusions other than the restricting protrusion is formed on the other end side of the hairspring in the axial direction of the hairspring.
clock parts. The plurality of restricting protrusions include a first restricting protrusion and a second restricting protrusion located closer to the inner end side of the hairspring than the first restricting protrusion when viewed in the axial direction along the central axis. A watch component according to claim 1. 3. A timepiece component according to claim 1, wherein said restricting convex portion is formed with a locking portion for restricting said hairspring from moving radially outward of said hairball. The timepiece component according to any one of claims 1 to 3 , wherein the plurality of restricting projections are provided at different positions when viewed in the axial direction. A watch movement incorporating the watch component according to any one of claims 1 to 4 . A timepiece comprising the timepiece movement according to claim 5 .

Images