Hand, timepiece, and method for manufacturing hand

Abstract

To provide a hand, a timepiece, and a method for manufacturing the hand which can prevent damage of a body of the hand.SOLUTION: In one embodiment, a hand 21 includes: a hand body 40 formed of a metallic material and having a hole 41; a base part 31 disposed on one surface side of the hand body 40; and a hakama 30 disposed inside the hole of the hand body 40 and on the other surface side of the hand body 40, the hakama 30 having a retaining part 32e that restricts movement of the hand body 40 in the thickness direction. The retaining part 32 is provided at both longitudinal ends of an edge part of an engaging part, projects to both sides in the longitudinal direction, is disposed to face the other surface side of the hand body 40 or the other surface side of a presser part 50, and is caulked and fixed to the hand body 40.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a hand, a timepiece, and a method for manufacturing a hand. [Background technology]

[0002] Patent Document 1 discloses a pointer structure comprising a pointer formed of a metal material and having a hole, a base portion disposed on one side of the pointer portion to close the hole, and a flared portion disposed within the hole of the pointer portion and on the other side of the pointer portion and having a portion for restricting axial movement of the hole. Furthermore, the patent document discloses a configuration in which the inner edge of the hole of the pointer portion is curved in an arc along the longitudinal direction of the needle body, and the flared portion is formed of resin and is joined to the pointer portion by insert molding. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 55-97421 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the crown is made of metal, it is necessary to crimp the crown to the pointer to prevent it from rotating and coming off. In this case, the crown is crushed, and stress is applied to the pointer in a direction that causes the hole to expand outward, which can cause damage such as deformation or cracks in the pointer.

[0005] An object of the present invention is to provide a pointer, a timepiece, and a method for manufacturing a pointer that can prevent damage to the hand body. [Means for solving the problem]

[0006] A pointer according to one embodiment of the present invention comprises a needle body made of a metal material and having a hole formed therein, a base portion arranged on one side of the needle body, and a hook having an engaging portion, at least a portion of which is arranged in the hole of the needle body, and the engaging portion has anti-slip portions at both longitudinal ends of the edge of the needle body, protruding on both sides in the longitudinal direction and crimped and fixed to the needle body, which restrict movement of the needle body in the thickness direction. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a pointer, a timepiece, and a method for manufacturing a pointer that can prevent damage to the hand body. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a plan view showing the configuration of a timepiece according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view showing the configuration of the hands module of the timepiece. [Figure 3] 10 is a plan view showing the configuration of the pointer of the pointer module as seen from above. FIG. [Figure 4] FIG. 2 is a plan view showing the configuration of the pointer as viewed from below. [Figure 5] FIG. 5 is a cross-sectional view taken along the line AA in FIGS. 3 and 4, showing the configuration of the pointer. [Figure 6] 1(a) is a perspective view showing the configuration of a hook fixed to the needle body of the pointer, and FIG. 1(b) is a cross-sectional view showing the configuration of a hook fixed to the needle body of the pointer. [Figure 7] FIG. 2 is a perspective view showing the configuration of the needle body of the pointer. [Figure 8] 2A and 2B are a plan view and a cross-sectional view showing a part of the configuration of the pointer. [Figure 9] 10A and 10B are a plan view and a cross-sectional view showing the configuration of a pointer according to a second embodiment. [Figure 10] 10A and 10B are a plan view and a cross-sectional view showing the configuration of a pointer according to a third embodiment. [Figure 11]10(a) is a perspective view showing the pointer before crimping in the manufacturing method of the fourth embodiment, and (b) is a perspective view showing the pointer after crimping in the manufacturing method of the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [First embodiment] The configuration of a timepiece 10 according to a first embodiment of the present invention will be described below with reference to FIGS. 1 to 9. For example, the watch 10 will be described with the crystal side as the front side and the case back side as the back side. In the drawings, X, Y, and Z indicate three mutually orthogonal directions. For example, in this embodiment, the watch 10 will be described with the first direction along the Z axis aligned with the front-to-back direction of the watch 10, but this is not limited to this. Note that in each figure, the configuration is shown schematically, enlarged, reduced, or omitted as appropriate.

[0010] As shown in Figure 1, the watch 10 is, for example, a wristwatch, and comprises a case 11 that forms the outer shell, a watch module 13 provided within the case 11, a watch crystal that covers the front side of the watch module 13, a back cover (not shown) that covers the back side of the watch module 13, and a plurality of switches 17 arranged around the outer periphery of the case 11.

[0011] The case 11 is configured to be circular or rectangular, and has a circular or rectangular storage space therein for storing the watch module 13 and the like.

[0012] Hand unit 20 of watch module 13 is placed in the top opening of case 11. Reinforcing members and parting members are placed on the outer periphery of hand unit 20, on the inner periphery of case 11. A groove is formed on the back surface (other surface) of case 11, and a waterproof ring is attached to this groove to create an airtight seal between the case and the back cover.

[0013] The timepiece module 13 is housed in the storage space of the case 11. The hand unit 20 of the timepiece module 13 is located at the top of the storage space of the case 11. As shown in FIG. 2, the timepiece module 13 includes the hand unit 20 having a minute hand 21 (hand), an hour hand 22 (hand), and a second hand 23 (hand), a gear train mechanism 27 as a power transmission unit, and a drive source 28. The timepiece module 13 may also include a dial having various display units. Depending on the drive system, the timepiece module 13 may further include various components necessary for the operation of the timepiece, such as a battery, a circuit board mounted with electronic components such as an IC and an antenna, etc.

[0014] The hand body 40 of the hour hand 22 is configured to be shorter in the longitudinal direction than the hand body 40 of the minute hand 21, but the rest of the configuration is similar. Also, the wheel 30 of the first minute hand 21 is attached to the first shaft portion 24, and the wheel 30 of the hour hand 22 is fixed to the outer periphery of the second shaft portion 25, but the rest of the configuration is similar. Therefore, in the following explanation of the minute hand 21 and the hour hand 22, the same components will be denoted by the same reference numerals.

[0015] As shown in Figures 3 to 9, the minute hand 21 and the hour hand 22 are provided with a hook 30 having an engaging portion 32, a needle body 40 having a needle hole 41 through which the engaging portion 32 is inserted, and a washer 50 as a retaining member attached to the outer periphery of the engaging portion 32.

[0016] The hook 30 is made of a metal material such as brass or an alloy of Cu and Zn. The hook 30 includes a base portion 31 and an engagement portion 32 extending from the base portion 31 to the rear side. The base portion 31 is formed in a plate shape and is disposed opposite the front side of the needle body 40. For example, the base portion 31 is formed in a shape such that the outer edge is larger than the pinhole 41, for example, a circular shape.

[0017] The engagement portion 32 is integral with the base portion 31 and extends from the base portion 31 to the rear side. The engagement portion 32 has an outer wall portion that passes through the inside of the pinhole 41 and follows the inner surface of the pinhole 41. The outer surface of the engagement portion 32 is composed of a pair of peripheral wall portions 32a that are curved in an arc shape on both longitudinal sides, and a pair of flat, straight wall portions 32b that connect the pair of peripheral wall portions 32a. The engagement portion 32 has a shaft hole 32d and is attached to the outer periphery of the shaft portions 24, 25, respectively. For example, the first shaft portion 24 is inserted into and joined to the shaft hole 32d of the engagement portion 32 of the minute hand 21. The second shaft portion 25 is inserted into and joined to the shaft hole 32d of the engagement portion 32 of the hour hand 22.

[0018] As shown in Figure 6(b), the engaging part 32 has a retaining part 32e on the rear edge. The retaining part 32e is a part that is deformed by crushing the tip edge of the engaging part 32 on the base part 31 side by crimping, and expands outward from the needle hole 41. The retaining part 32e protrudes outward from the hole of the washer 50, thereby restricting the movement of the washer 50 and the needle body 40 in the axial direction.

[0019] For example, at least a portion of the engaging portion 32 is disposed inside the needle hole 41. That is, the engaging portion 32 may be partially disposed outside the needle hole 41, and for example, in this embodiment, the retaining portion 32e at the tip is disposed on the back side of the needle hole 41. That is, the engaging portion 32 is disposed on the other surface side of the needle body 40 and has the retaining portion 32e that restricts movement of the needle body 40 in the thickness direction.

[0020] 5, the retaining portion 32e is formed by the ends of the pair of arc-shaped peripheral wall portions 32a on the side opposite to the base portion 31. For example, before the crimping process, the rear end of the peripheral wall portion 32a forms a protruding portion 32f that is configured to be higher from the base portion 31 than the rear end of the straight wall portion 32b, and the crimping process deforms the protruding portion 32f to protrude outward from the needle hole 41, thereby forming the retaining portion 32e. The retaining portion 32e is disposed opposite the other surface of the needle body 40 or the other surface of the pressing portion 50, or is pressed against the inner edge of the hole of the needle body 40 or the pressing portion 50, and is fixed to the needle body 40 by crimping.

[0021] The needle body 40 is rotatable about a rotation axis C1. The needle body 40 is connected to a drive source 28 via a gear train mechanism 27 and rotates so that its longitudinal direction faces the direction corresponding to the time to be displayed. As shown in FIGS. 3 and 4 , the needle body 40 is formed in the shape of a long, thin plate made of a metal such as Al. The needle body is formed, for example, with a width dimension of approximately 1 mm along the short side. A pinhole 41, which is a through-hole, is formed at the base end, which is one end of the needle body 40 in the longitudinal direction. For example, the needle body 40 has an outer shape in which the width dimension expands at the location where the pinhole 41 is located. Furthermore, an opening 42 is formed in a central region in the width direction of the needle body 40, and a luminous unit may be provided in the opening 42. The central region of the needle body 40 in the width direction is flat. However, both sides of the flat surface in the width direction of the needle body 40 are formed with inclined surfaces that become thinner toward both ends in the width direction. Therefore, since the phosphorescent material is embedded in the flat area of ​​the needle 40, which is thicker than the inclined surface, the needle 40 becomes bright and can be easily viewed.

[0022] The engaging portion 32 of the hook 30 is disposed in the needle hole 41. The inner wall surface of the needle hole 41 includes a pair of peripheral edges 41a, a pair of flat straight edges 41b, and an escape opening 41c (recess) formed at the corner between the peripheral edges 41a and the straight edges 41b. That is, the inner edge of the needle hole 41 has a linear portion and an arc-shaped portion. The inner wall surface of the needle hole 41 is shaped to fit along the outer wall surface of the engaging portion 32, and by being disposed opposite the outer wall surface of the engaging portion 32, it regulates the position and posture of the engaging portion 32.

[0023] The pair of peripheral edge portions 41a are arranged, for example, on both sides in the longitudinal direction of the needle body 40, and form an arc shape centered on the rotation axis C1. For example, the peripheral edge portion 41a is formed at a central angle of 90 degrees. The pair of straight edge portions 41b are arranged opposite each other with a predetermined width dimension between them, and extend along the longitudinal direction of the needle body 40. The pair of straight edge portions 41b connect the ends of the pair of peripheral edge portions 41a to each other.

[0024] Furthermore, at both ends of the pair of straight edges 41b of the inner edge of the needle hole 41, relief openings 41c that bulge outward are formed at the four corners between the peripheral edge 41a and the straight edges 41b. The relief openings 41c, for example, expand outward at the four corners, thereby reducing the load when inserting the engaging portion 32 into the needle hole 41.

[0025] The washer 50 is an annular plate member and has a hole 50a into which the engaging portion 32 is inserted. For example, the hole 50a of the washer 50 is configured to be larger than the outer shape of the engaging portion 32 and smaller than the outer edge of the retaining portion 32e. The washer 50 is attached to the outer periphery of the engaging portion 32 and is held between the needle body 40 and the retaining portion 32e.

[0026] A manufacturing method for the minute hand 21 and the hour hand 22 according to the first embodiment will be described with reference to FIG. 9. The manufacturing method for the minute hand 21 and the hour hand 22 includes the steps of inserting the engaging portion 32 of the bushing 30 into the pin hole 41 of the hand body 40 and the hole 50a of the washer 50, and crimping the tip of the engaging portion 32 to form a retaining portion 32e. Specifically, as shown in FIG. 9(a), the engaging portion 32 is first inserted into the pin hole 41 of the hand body 40, and the washer 50 is attached to the outer periphery of the engaging portion 32 protruding from the pin hole 41 to the rear side. For example, the engaging portion 32 before crimping has a shape surrounded by a straight wall portion 32b that is linear along the longitudinal direction of the pointer and a peripheral wall portion 32a that is curved in the lateral direction of the pointer, and has a protruding portion 32f that is formed so that the height of the peripheral wall portion 32a at both longitudinal ends is higher than the height of the straight wall portion 32b in the center.

[0027] 9(b), the engaging portion 32 protruding from the back side of the washer 50 is pressurized from the back side toward the front side and crimped, thereby deforming the protruding portion 32f at the tip and forming the retaining portion 32e extending to the outer periphery of the needle hole 41. At this time, the protruding portion 32f, which is higher at both longitudinal ends than at the center, extends particularly outward at both longitudinal ends, and retaining portions 32e deformed by crimping are formed on both longitudinal sides.

[0028] The second hand 23 includes a support part 230 attached to the third shaft part 26, and a needle body 240. The support part 230 is joined to the shaft part 26, for example. The support part 230 integrally includes a cover part 231 arranged on the front side of the needle body 240, and an engagement part 232 inserted into the pin hole 241. The engagement part 232 is configured in a cylindrical shape with a closed bottom and a front side that is closed, and has a recess in which the tip of the shaft member 26 is placed. The engagement part 232 is joined to the tip of the shaft part 26 and covers the tip side of the shaft part 26.

[0029] The gear train mechanism 27 is connected to the output side of the drive source 28 and transmits the driving force of the drive source 28 to the hand unit 20. The gear train mechanism 27 includes a plurality of shafts 24, 25, 26 and gear members that are appropriately arranged according to the arrangement of the drive source 28 and the minute hand 21, the hour hand 22, and the second hand 23. For example, the gear train mechanism 27 includes shafts 24, 25, 26 that engage with the minute hand 21, the hour hand 22, and the second hand 23, and a plurality of gear members connected to the shafts 24, 25, 26. The gear train mechanism 27, together with the drive source 28, constitutes a movement that moves the minute hand 21, the hour hand 22, and the second hand 23. Depending on the arrangement relative to other members, the shafts 24, 25 may be integrally joined to the gear members or may be engaged in a manner that allows power transmission.

[0030] As an example, the first shaft portion 24 for the minute hand 21 is a hollow rod-shaped member extending in a predetermined first direction and is configured in a cylindrical shape with a through-hole in the center into which the third shaft portion 26 can be inserted. The second shaft portion 25 for the hour hand 22 is a hollow rod-shaped member extending in the predetermined first direction and is configured in a cylindrical shape with a through-hole in the center into which the first shaft portion 24 can be inserted. The third shaft portion 26 for the second hand 23 is a rod-shaped member extending in the predetermined first direction. That is, the first shaft portion 24 is rotatably attached to the outer periphery of the third shaft portion 26, and the second shaft portion 25 is rotatably attached to the outer periphery of the first shaft portion 24.

[0031] Drive source 28 includes one or more drive mechanisms. Various drive mechanisms, such as a motor or a mainspring mechanism, can be used as the drive mechanism depending on the drive system of timepiece 10. Drive source 28 is connected to minute hand 21, hour hand 22, and second hand 23 via gear train mechanism 27, and drives minute hand 21, hour hand 22, and second hand 23 by transmitting power to minute hand 21, hour hand 22, and second hand 23 via gear train mechanism 27. Drive source 28 may be configured to use one drive mechanism to drive minute hand 21, hour hand 22, and second hand 23, or may be configured to include a drive mechanism for each of minute hand 21, hour hand 22, and second hand 23.

[0032] The crystal is a so-called crystal, and is made of a transparent, circular material. The crystal is attached, for example, via a packing to the inner periphery of the case 11, and covers the front side of the clock module 13. The back cover is a plate-like member that is attached to the back side of the case 11 and covers the back side of the clock module 13. The operator presses the switch to change modes of the clock module 13, adjust the time, etc.

[0033] In the timepiece 10 configured as described above, the inner edge of the pinhole 41 of the hand body 40 has a straight edge portion 41b, and the outer wall of the engagement portion 32 has a straight wall portion 32b, thereby providing a rotation prevention function. This reduces the force required for crimping, thereby suppressing fine cracks, surface distortion, and warping that are prone to occur on the exterior. In other words, while rotation prevention and slip-out prevention functions are necessary to secure the bracelet and hand body, ensuring the rotation prevention strength to withstand rotational torque, particularly during impacts, requires a stronger crimp. On the other hand, a stronger crimp makes fine cracks and warping more likely to occur. It is particularly difficult to achieve both impact resistance and a good appearance on metal hands with decorative surfaces, such as mirror finishes or gloss plating, or where surface distortion is noticeable due to light reflection, etc. In the first embodiment, the engagement portion and the pinhole edge of the metal hand are configured to have a linear portion that acts as a rotation prevention function, thereby suppressing loads on the hand body 40 and preventing damage to the hand body. Therefore, it is possible to maintain impact resistance while ensuring good appearance.

[0034] In the first embodiment, the needle hole 41 has peripheral edges on both sides of the needle body in the longitudinal direction and straight edges along the longitudinal direction on both sides of the lateral direction. This allows the stress during the crimping process to be directed in the longitudinal direction of the needle, which has greater strength, while minimizing the load on the lateral direction, which has less strength. Furthermore, by making the lateral direction, which has smaller dimensions, linear, the hole width can be narrowed, making it easier to ensure strength. In the first embodiment, the needle hole 41 has an escape opening 41c cut into an arc at the corner of the inner edge, reducing the load when inserting the engagement portion 32 into the needle hole 41.

[0035] It should be noted that the first embodiment is merely an example and does not limit the scope of the invention. For example, in the above embodiment, an example in which a circular washer 50 is attached is shown, but this is not limiting. For example, a configuration in which a part of the engaging portion 32 is crimped and fixed to the back surface of the needle body 40 without attaching the washer 50 is also possible. Furthermore, in the first embodiment, an example in which the retaining portion 32e is formed by deforming a part of the engaging portion 32 by crimping is shown, but this is not limiting. For example, the retaining portion may be configured to have a flange portion that expands radially outward in advance.

[0036] [Second embodiment] For example, in the minute hand 21A shown in FIG. 9 as a second embodiment, the engagement portion 32 has a flange portion 332e at the rear tip edge, which serves as a retaining portion and has an expanded outer diameter. For example, the flange portion 332e is configured so that the rear tip edges of the peripheral wall on both longitudinal sides of the cylindrical engagement portion 32 bulge outward in the longitudinal direction. The outer surface of the flange portion 332e is configured in a tapered shape that narrows toward the tip. In the second embodiment, the cross-sectional shape of the pinhole 41 and the part of the engagement portion 32 closer to the base portion 31 than the flange portion 332e is the same as in the first embodiment, with both longitudinal sides configured in an arc shape and both lateral sides configured in a straight shape. In the second embodiment, a ring-shaped spring member 350 whose opening expands and contracts due to elastic deformation is provided as a retaining member.

[0037] The spring material 350 is a ring-shaped plate member and has a hole 350a into which the engaging portion 32 is inserted. The spring material 350 is elastically deformable, and the hole 350a has a retaining portion 351 configured to be smaller than the outer edge of the flange portion 332e, which serves as a retaining portion in a free state. The hole 350a can expand and contract through elastic deformation, and is configured so that the retaining portion 351 can be attached by overcoming the flange portion 332e through deformation. The spring material 350 is attached to the outer periphery of the engaging portion 32 and is held between the needle body 40 and the flange portion 332e.

[0038] When assembling the minute hand 21A (hand) according to the second embodiment, the engaging portion 32 is pushed axially into the pinhole 41 to deform the flange portion 332e of the engaging portion 32 and insert it into the pinhole 41. After that, the opening of the spring material 350 is widened and attached from the tip side of the engaging portion 32, so that the spring material 350 is positioned closer to the base portion 31 than the flange portion 332e. As described above, the hook 330 and the needle body 340 can be connected by the spring material 350. The second embodiment also achieves the same effects as the first embodiment. Furthermore, in the second embodiment, the spring material 350 is attached to the flange portion 332e, which serves as a retaining portion, so that crimping is not required.

[0039] [Third embodiment] Furthermore, as a third embodiment, a spring material 450 having a shape that is not ring-shaped but has an opening on one side may be used as the retaining member, as in the minute hand 21B (pointer) shown in FIG. 10 . In the third embodiment, the spring material 450 has a shape that opens on one side in the longitudinal direction when attached. The spring material 450 is a plate member that opens on one side and has an opening 450a into which the engaging portion 32 is inserted. The spring material 450 is elastically deformable, and the opening 450a has a retaining portion 451 that is configured to be smaller than the width dimension of the flange portion 432e in a free state as a retaining portion. The opening 450a can expand and contract due to the elastic deformation of the spring material 450, and the retaining portion 451 expands due to deformation, allowing the retaining portion 451 to overcome the flange and be attached. The spring material 450 is attached to the outer periphery of the engaging portion 32 and is held between the needle body 40 and the flange portion 432e.

[0040] In the minute hand 21B according to the third embodiment, by pushing the engaging portion 32 axially into the pinhole 41, the flange portion 432e of the engaging portion 32 is deformed and inserted into the pinhole 41, and then the spring material 450 is slid from one longitudinal side to the other of the engaging portion 32 while widening the opening of the spring material 450, so that the spring material 450 can be attached from the outer periphery to the outer periphery closer to the base portion 31 than the flange portion 432e. The third embodiment also achieves the same effects as the first and second embodiments. Furthermore, in the third embodiment, the configuration in which the spring material 450 is attached to the flange portion 432e, which serves as a retaining portion, eliminates the need for crimping.

[0041] [Fourth embodiment] 11(a) and 11(b) as a fourth embodiment, the engaging portion 32 may have a retaining portion 532e in the shape of a plate extending outward from the needle hole 41. For example, in the fourth embodiment, the tip edge of the engaging portion 32 on the base portion 31 side is crushed by crimping at both sides of the engaging portion 32 in the longitudinal direction of the needle body 40, thereby forming a flange-shaped retaining portion 532e extending outward from the needle hole 41. The retaining portion 532e is formed in a plate shape and is disposed opposite the back side of the washer 50, thereby restricting the axial movement of the washer 50 and the needle body 40.

[0042] 11(a) and 11(b), the retaining portion 532e is formed by the end portions of the pair of arc-shaped peripheral wall portions 32a on the side opposite to the base portion 31. For example, before the crimping process, the rear end portion of the peripheral wall portion 32a forms a protruding portion 532f configured to be higher from the base portion 31 than the rear end portion of the straight wall portion 32b, and the crimping process deforms the protruding portion 532f and causes it to extend outward from the pinhole 41, thereby forming the flange-shaped retaining portion 532e.

[0043] In the first to fourth embodiments, examples have been shown in which the present invention is applied to the minute hand 21 and the hour hand 22 of a timepiece having the minute hand 21, the hour hand 22, and the second hand 23 as hands, but the present invention is not limited to this. For example, the present invention may be applied only to the minute hand. For example, since the minute hand is long and narrow, application to the minute hand is particularly effective in terms of impact resistance and prevention of damage during joining. Furthermore, a dial or the like may be provided on the back side of the hand unit 20. Furthermore, the features of the first to third embodiments may be combined.

[0044] The specific configurations, structures, and positional relationships shown in the first to fourth embodiments can be modified as appropriate without departing from the spirit of the present invention. The present invention is included in the scope of the inventions set forth in the claims and their equivalents. [Explanation of symbols]

[0045] 21...minute hand (pointer), 30...slip ring, 32...engagement portion, 32a...circumferential wall portion, 32b...straight wall portion, 32e...prevention portion, 40...hand body, 41...pinhole (hole).

Claims

1. a needle body made of a metal material and having a hole formed therein; a hook having a base portion disposed on one surface side of the needle body and an engagement portion at least a portion of which is disposed in the hole of the needle body; Equipped with The engaging portion is provided at both longitudinal ends of the needle body at the edge portion, and has anti-slip portions that protrude on both sides in the longitudinal direction, are crimped and fixed to the needle body, and restrict movement of the needle body in the thickness direction.

2. The pointer according to claim 1 , wherein the inner wall surface of the hole in the needle body includes a peripheral edge portion curved in an arc along the outer periphery of the engagement portion, and a straight edge portion along the longitudinal direction of the needle body.

3. an inner wall surface of the hole of the needle body includes a pair of opposing straight edge portions and a pair of peripheral edge portions arranged on both sides of the engaging portion in the short direction of the pointer and connecting both ends of the pair of straight edge portions; 3. The pointer according to claim 2, wherein the engagement portion has an axial hole in which a shaft of a gear train mechanism is disposed, and has an outer wall portion that conforms to the shape of the inner wall surface.

4. The pointer according to claim 3 , further comprising a pressing member disposed opposite the other surface of the needle body and attached to an outer periphery of the engaging portion.

5. The pointer according to claim 2 , wherein the inner wall surface of the hole in the needle body includes a recess formed between the peripheral edge and the straight edge.

6. The pointer according to claim 4, wherein the retaining member is a spring material attached to the needle body side of the retaining portion of the engagement portion.

7. A guideline according to any one of claims 1 to 6; a train wheel mechanism connected to the pointer; A watch equipped with

8. Inserting an engaging portion of a hook made of a metal material and having a base portion and an engaging portion into the hole of a needle body having a hole formed therein; By crimping the tip of the engaging portion, a retaining portion is formed at both ends of the engaging portion in the longitudinal direction of the needle body, protruding on both sides in the longitudinal direction, and crimped and fixed to the needle body to restrict movement of the needle body in the thickness direction; Equipped with How the pointer is manufactured.

9. The inner wall surface of the hole includes a peripheral edge portion curved in an arc along the outer periphery of the engagement portion and a straight edge portion along the longitudinal direction of the needle body. The tip of the engagement part has protrusions formed on both sides in the longitudinal direction of the needle body, the protrusions being higher in the axial direction than the central part, 9. The method for manufacturing a pointer according to claim 8, wherein the crimping process causes the protrusions on both sides in the longitudinal direction to deform and extend outward from the pinhole.

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