Clasp, band and watch

Abstract

The present invention provides a clasp, band, and watch that can engage the engaged portion and the engaging member even when the locking device is moved to a position that restricts the operation of the operating member while the clasp is disengaged. [Solution] The clasp comprises a connecting member having an engaged portion and a clasp body, the clasp body comprising an engaging member movable to an engaged position and a released position, an operating member for moving the engaging member from the engaged position to the released position, and a locking device movable to an operation restricting position and an operation permitting position, the engaging member can be engaged to the engaged portion without operating the operating member when the engaging member is not engaged to the engaged portion, the engagement can be released by moving the engaging member to the released position with the operating member, and when the locking device is moved to the operation restricting position, the operating member is restricted from moving the engaging member to the released position, and the operating member has a protrusion that protrudes toward the engaging member side.

Description

Technical Field

[0001] The present invention relates to a middle buckle used for bands such as watch bands and decorative item bands, a band provided with the middle buckle, and a watch provided with the band.

Background Art

[0002] Patent Document 1 discloses a push middle buckle in which the engagement between the engaging portion of the push button and the engaging pin of the dial plate can be released by pushing the push button, and the push operation of the push button can be restricted by moving a lock member. In this push middle buckle, by moving the lock member to restrict the push operation of the push button, it is possible to prevent the engagement of the middle buckle from being released by an unintended push operation during a diver's dive and the wristwatch from falling off.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the push middle buckle of Patent Document 1, when the lock member is accidentally moved to a position where the push operation is restricted while the engagement of the middle buckle is released, the engaging portion of the push button and the engaging pin of the dial plate cannot be engaged, and there is a problem that the lock member needs to be operated again.

Means for Solving the Problems

[0005] The clasp of the present disclosure is a clasp connecting a first band and a second band, comprising: a connecting member connected to the first band side and having an engaging portion; and a clasp body connected to the second band side, wherein the clasp body comprises: an engaging member movable to an engaging position in which it can engage with the engaging portion and to a release position in which it can release engagement with the engaging portion; an operating member for moving the engaging member from the engaging position to the release position; and a locking device movable to an operating restriction position for restricting the operation of the operating member and to an operating permission position for permitting the operation of the operating member, wherein the locking device is the operating Regardless of whether the device is in the restricted position or the permitted position, when the engaging member is not engaged with the engaged portion, the engaging member can be engaged with the engaged portion without operating the operating member; when the engaging member is engaged with the engaged portion, the engagement is released by moving the engaging member to the release position using the operating member; when the locking device is moved to the restricted position, the operating member is prevented from moving the engaging member to the release position; and the operating member is characterized by having a protrusion that projects toward the engaging member.

[0006] The band of this disclosure is characterized by comprising the clasp and the first band and the second band connected to the clasp. The watch of this disclosure is characterized by comprising the band described above. [Brief explanation of the drawing]

[0007] [Figure 1] This is a front view showing a wristwatch according to the first embodiment. [Figure 2] This is a perspective view showing the clasp in the open state of the folding member of the first embodiment. [Figure 3] This is an exploded perspective view of the clasp of the first embodiment. [Figure 4] This is an exploded perspective view of the clasp body of the first embodiment. [Figure 5] This is a perspective view showing the main parts of the movable operating member and position holding component of the first embodiment. [Figure 6]This is a plan view showing the operation permission state of the clasp body of the first embodiment. [Figure 7] This is a cross-sectional view showing the operation permission state of the clasp body of the first embodiment. [Figure 8] This is a perspective view showing the main part of the clasp body in the operation permission state of the first embodiment. [Figure 9] This is a plan view showing the push operation state of the clasp body of the first embodiment. [Figure 10] This is a cross-sectional view showing the push operation state of the clasp body of the first embodiment. [Figure 11] This is a plan view showing the operating restriction state of the clasp body of the first embodiment. [Figure 12] This is a cross-sectional view showing the restricted operation state of the clasp body in the first embodiment. [Figure 13] This is a perspective view showing the main part of the operating restriction state of the clasp body of the first embodiment. [Figure 14] This is a perspective view showing the main part of the clasp body in the operation permission state of the second embodiment. [Figure 15] This is a perspective view showing the main part of the clasp body in the operation restriction state of the second embodiment. [Figure 16] This is an exploded perspective view of the clasp body of the third embodiment. [Figure 17] This is a cross-sectional view showing the clasp body of the third embodiment. [Modes for carrying out the invention]

[0008] [First Embodiment] Hereinafter, a first embodiment of this disclosure will be described with reference to the drawings. As shown in Figure 1, the wristwatch 100 comprises an outer case 10, a first band 11, and a second band 12. Lugs 10A are integrally provided on the outer case 10 at the 6 o'clock and 12 o'clock positions, respectively. The first band 11 is connected to the lug 10A at the 6 o'clock position using an attachment pin, and the second band 12 is connected to the lug 10A at the 12 o'clock position using an attachment pin. The first band 11 and the second band 12 are formed by connecting a plurality of band pieces 9 with pins not shown in the figure. The open ends of the first band 11 and the second band 12 are fastened by the intermediate portion 1 shown in FIGS. 2 to 4. Therefore, the intermediate portion 1, the first band 11, and the second band 12 constitute a band used for the wristwatch 100.

[0009] FIG. 2 is a perspective view of the intermediate portion 1 with the folding member 2 opened, and FIG. 3 is an exploded perspective view of the intermediate portion 1. In the following description, the X-axis is an axis along the longitudinal direction of the first band 11 and the second band 12. The Y-axis is an axis along the width direction of the first band 11 and the second band 12 and is perpendicular to the X-axis. The Z-axis is an axis perpendicular to the X-axis and the Y-axis. In the X-axis, the direction from the intermediate body 4 toward the first band 11 is defined as the X1 direction, and the direction from the intermediate body 4 toward the second band 12 is defined as the X2 direction. One direction of the Y-axis is defined as the Y1 direction, and the other direction is defined as the Y2 direction. In the Z-axis, the direction in which the intermediate cover 40 moves away from the folding member 2 is defined as the Z1 direction, and the direction in which the intermediate cover 40 approaches the folding member 2 is defined as the Z2 direction. Also, the Z1 direction side of the intermediate body 4 may be expressed as the front side of the intermediate portion 1, the Z2 direction side as the back side of the intermediate portion 1, the Y1 direction side as the left side, and the Y2 direction side as the right side. Also, the state of viewing the intermediate portion 1 from the Z-axis direction may be expressed as a plan view, and the state of viewing it from the Y-axis direction may be expressed as a side view.

[0010] As shown in FIG. 2, the intermediate portion 1 includes a folding member 2 and an intermediate body 4. The folding member 2 includes a middle plate 20 and an outer plate 30. The middle plate 20 is a member that is elongated along the X-axis direction, which is the longitudinal direction of the first band 11. The end on the X1 direction side is rotatably connected to the first band 11 by a connecting pin 13. The end on the X2 direction side of the middle plate 20 is rotatably connected to one end of the outer plate 30 by a connecting pin 14. Further, a lock pin 21 as an engaged portion protruding from the surface side is provided on the middle plate 20. Therefore, the middle plate 20 is a connecting member that is connected to the first band 11 side and has an engaged portion. Further, the lock pin 21 includes a shaft portion 22 protruding from the middle plate 20 and an umbrella portion 23 provided at the tip of the shaft portion 22. The outer plate 30 includes a shaft portion 31 rotatably connected to the middle body 4, and a pair of outer plate arms 32 extending along the X-axis direction from both ends in the Y-axis direction of the shaft portion 31 and disposed on both the left and right sides of the middle plate 20. As described above, the tip of the outer plate arm 32 is rotatably connected to the end of the middle plate 20 by a connecting pin 14. Therefore, when the middle folded member 2 is folded, the outer plate arms 32 are disposed on both the left and right sides of the middle plate 20, and the front and back surfaces of the middle plate 20 and the outer plate 30 are respectively located on substantially the same plane, and the lock pin 21 is configured to protrude from the front and back surfaces of the middle plate 20 and the outer plate 30.

[0011] [Configuration of the middle body] As shown in FIG. 3, the middle body 4 includes a middle cover 40, a middle frame portion 50, a middle connection portion 55, an engagement unit 60, and a locking device 70. <000009。 [Configuration of the middle cover] As shown in FIG. 3, the middle cover 40 includes a plate-shaped surface portion 41 that is curved in an arc shape along the X-axis direction, and a pair of side wall portions 42 that protrude from the outer edge in the Y-axis direction to the back surface side when viewed from the front surface side of the surface portion 41. The surface portion 41 has a recessed portion 411 in which a movable operating member 72, described later, is positioned to move along the X-axis direction, which is the longitudinal direction of the central cover 40. A substantially rectangular opening 412 is formed in this recessed portion 411. A convex portion 413 is formed on the end face of the opening 412 on the X1 direction side, and a concave portion 414 is formed on the end face on the X2 direction side. In addition, a guide surface 415 is formed by a pair of sides of the opening 412 along the X-axis direction. This guide surface 415 is a surface that guides the movable operating member 72, described later, along the X-axis direction.

[0013] Each side wall portion 42 is provided with an elongated hole 421 aligned with the X-axis direction. The push buttons 64, which will be described later, are positioned in the elongated hole 421. In addition, through holes 422 and 423 are formed in the pair of side wall portions 42, into which screws 46 that fix the clasp cover 40 to the clasp frame portion 50 are inserted.

[0014] As shown in Figures 3 and 4, a position-holding component 45 is positioned between the convex portion 413 and the concave portion 414 of the opening 412. The position-holding component 45 is a component that holds the locking device 70, which will be described later, in the operation-permitted position and the operation-restricted position. It is formed by bending a metal material and comprises a base portion 451, a pair of extension portions 452, a pair of holding portions 453, and a pair of locking portions 454, as shown in Figures 4 and 5. The base portion 451 is formed along the Y-axis direction. A pair of extensions 452 extend from both ends of the base portion 451 in the X2 direction. Each pair of holding portions 453 comprises a first inclined surface portion 4531 extending away from each other from the X2-direction end of the base portion 451, and a second inclined surface portion 4532 extending towards each other from the X2-direction end of the first inclined surface portion 4531. The connecting portion of the first inclined surface portion 4531 and the second inclined surface portion 4532 protrudes outward, forming a projection. The inclination angle of the first inclined surface portion 4531 with respect to the X-axis direction is, for example, 30 degrees. The inclination angle of the second inclined surface portion 4532 with respect to the X-axis direction is, for example, 40 degrees, which is set to a larger angle than that of the first inclined surface portion 4531. The pair of locking portions 454 extend away from each other from the X2-direction end of the second inclined surface portion 4532 and are further folded inward. The position-holding component 45 has its base 451 in contact with the convex portion 413 of the central clasp cover 40, and the pair of locking portions 454 are positioned in the recess 414. In this state, when the pair of locking portions 454 of the position-holding component 45 are not positioned in the opening 412, they are larger than the width dimension of the recess 414 in the Y-axis direction. Therefore, when the locking portions 454 are positioned in the recess 414, they are biased to move away from each other, and thus come into contact with each other's opposing surfaces of the recess 414. For this reason, the position-holding component 45 has spring properties, and these spring properties bias the holding portions 453 to move away from each other.

[0015] [Structure of the clasp frame] As shown in Figure 3, the central frame section 50 is composed of a pair of frames 51 connected to the shaft section 31 of the outer plate 30 by connecting pins 15 (see Figure 7). Each frame 51 is fixed to each side wall section 42 of the central cover 40 with screws 46. Each frame 51 has a guide groove section 511 that allows the connection position with the central connecting section 55 to be changed in multiple stages.

[0016] [Configuration of the connecting part] The clasp connecting portion 55 is connected to the second band 12 and includes a retaining unit 57 that holds an engagement pin 56 that engages with the guide groove portion 511. The engagement pin 56 is positioned between the clasp cover 40 and the clasp frame portion 50. The retaining unit 57 is biased toward the clasp frame portion 50 relative to the clasp cover 40 by an internal spring, engaging the engagement pin 56 with the guide groove portion 511. By pushing the retaining unit 57 toward the clasp cover 40 from the back side, the engagement pin 56 can be moved to another guide groove portion 511, thereby allowing the clasp cover 40 and the clasp frame portion 50 to slide in multiple stages relative to the second band 12.

[0017] [Configuration of the engagement unit] As shown in Figure 4, the engagement unit 60 comprises a guide frame 61, a pair of slide plates 62 which are engagement members, a pair of coil springs 63 which are biasing members, and a pair of push buttons 64 which are operating members. The guide frame 61 comprises a bottom portion 611, side portions 612 and 613, guide portions 614 and 615, and surface portions 6141 and 6151. The bottom portion 611 is formed in a rectangular plate shape and has an insertion hole 6111 through which the lock pin 21 is inserted. The side portions 612 and 613 are formed to protrude from the outer edges of the bottom portion 611 in the X1 and X2 directions toward the surface. The distance between the side portions 612 and 613 in the X-axis direction is set to match the width dimension of the slide plate 62. Guide portion 614 and surface portion 6141 protrude from side portion 612 in the X2 direction. Guide portion 615 and surface portion 6151 protrude from side portion 613 in the X1 direction. Guide portions 614 and 615 are thicker than surface portions 6141 and 6151, meaning their thickness in the Z-axis direction is greater, and a pair of guide portions are provided, spaced apart in the Y-axis direction with surface portions 6141 and 6151 in between. As a result, a groove is formed on the surface side of the guide frame 61, partitioned by each guide portion 614 and 615 and the surface portions 6141 and 6151, and a locking member 71, described later, is placed in this groove. As a result, the locking member 71 is guided so that it can slide in the X-axis direction but cannot move in the Y-axis direction by being placed in the groove. Furthermore, the guide portion 614 and surface portion 6141 are spaced apart in the X-axis direction, and a continuous groove is formed between them in the Y-axis direction. This groove is configured to accommodate the protrusion 643 of the push button 64, which will be described later. The spacing between the side portions 612 and 613 in the X-axis direction is set to match the width dimension of the slide plate 62, i.e., the dimension in the X-axis direction. Also, the spacing between the bottom portion 611 and the guide portions 614 and 615 and the surface portions 6141 and 6151 in the Z-axis direction is set to match the thickness dimension of the slide plate 62. Therefore, when a pair of slide plates 62 are inserted between the side portions 612 and 613, and between the bottom portion 611 and the guide portions 614 and 615 and the surface portions 6141 and 6151, the slide plates 62 are positioned to be movable only in the Y-axis direction.

[0018] [Slide plate configuration] As shown in Figure 4, each slide plate 62 comprises a main body portion 620, an engaging portion 621, and a connecting portion 622 that connects the main body portion 620 and the engaging portion 621. The engaging portion 621 of one slide plate 62 is positioned between the engaging portion 621 of the other slide plate 62 and the main body portion 620. Similarly, the engaging portion 621 of the other slide plate 62 is positioned between the engaging portion 621 of the first slide plate 62 and the main body portion 620. Therefore, the engaging portions 621 are positioned facing each other, and when the slide plates 62 move closer to each other, the engaging portions 621 move in a direction that separates them, and when the slide plates 62 move in a direction that separates them, the engaging portions 621 move in a direction that brings them closer to each other. Therefore, the pair of slide plates 62, which are engaging members, are configured to be movable between an engaging position where the pair of engaging portions 621 are close to each other and can engage with the lock pin 21, which is the engaged portion, and a release position where the pair of engaging portions 621 are separated from each other and can release the engagement with the lock pin 21, which is the engaged portion. The end face of the main body 620 in the Y-axis direction is a contact surface 623 that the push button 64, which will be described later, will contact. As shown in Figures 7 and 10, the opposing surfaces of the engaging portions 621 have inclined surfaces 626 that are angled away from each other as they move from the front side to the back side. The inclined surfaces 626 are formed continuously from the midpoint in the Z-axis direction to the lower end in the Z2 direction of the opposing surfaces of the engaging portions 621. Therefore, each engaging portion 621 has a claw shape in which the thickness dimension in the Z-axis direction decreases as it approaches the opposing engaging portion 621.

[0019] As shown in Figure 4, the biasing member, the coil spring 63, is positioned between the main body 620 and the connecting portion 622, biasing the pair of slide plates 62 in a direction that moves them apart in the Y-axis direction. When each slide plate 62 moves apart from each other, each engaging portion 621 moves toward each other. At this time, if the shaft portion 22 of the lock pin 21 is positioned between the engaging portions 621, the distance between the engaging portions 621 becomes smaller than the umbrella portion 23, preventing them from coming apart, so that each engaging portion 621 can engage with the lock pin 21, which is the engaged portion.

[0020] The pair of push buttons 64 are operating members that move the pair of slide plates 62, which are engaging members, from the engaged position to the released position. Each push button 64 comprises a button body 641, a flange 642 formed on the end face of the button body 641, and a protrusion 643 that projects from the flange 642 in the Y-axis direction, i.e., toward the slide plate 62. The button body 641 is inserted from the inside of the retaining cover 40 into the elongated hole 421 of the side wall 42, and the flange 642 is locked to the side wall 42, preventing the push button 64 from coming out to the outside. Each push button 64 has an end face with a flange 642 that abuts against the slide plate 62, and the slide plate 62 is biased by the coil spring 63 to separate from each other, so that each push button 64 is also biased to separate from each other in the Y-axis direction, the flange 642 abuts against the inner surface of the side wall 42, and the button body 641 protrudes outward from the elongated hole 421 to the side wall 42. Furthermore, when the button bodies 641 of the push buttons 64 are pressed by the user and move closer together, each slide plate 62 moves toward each other in the Y-axis direction, and each engaging portion 621 moves toward each other. At this time, if each engaging portion 621 is engaged with the lock pin 21, the distance between the engaging portions 621 becomes greater than the diameter of the umbrella portion 23 of the lock pin 21, making it possible to release the engagement with the lock pin 21. Furthermore, since an inclined surface 626 is formed on the engaging portion 621 of the slide plate 62, when the umbrella portion 23 of the lock pin 21 contacts the inclined surface 626 from the back side of the engaging portion 621, the umbrella portion 23 pushes the inclined surface 626 outward. As a result, the slide plates 62 move toward each other against the biasing force of the coil spring 63, and the engaging portions 621 move toward each other. When the umbrella portion 23 overcomes the engaging portions 621, the slide plates 62 are biased toward each other by the coil spring 63, the engaging portions 621 move toward each other, and engage with the shaft portion 22 of the lock pin 21.

[0021] The protrusion 643 of the push button 64 is located at the center of the flange 642 in the X-axis direction and at the end on the side of the clasp cover 40, i.e., the Z1 direction side, in the Z-axis direction. Therefore, as shown in Figure 6, the protrusion 643 is positioned between the guide portions 614 and 615 in the X-axis direction. Also, as shown in Figure 10, the protrusion 643 is positioned so as to overlap the surface side of the slide plate 62, i.e., the Z1 side surface, in the Z-axis direction, and is positioned between the slide plate 62 and the clasp cover 40. In other words, the protrusion 643 of the push button 64, which is the operating member, is positioned in the space provided between the clasp cover 40, which is the cover member, and the slide plate 62, which is the engaging member, in a side view. Therefore, the push button 64 is guided in the X-axis direction by guide portions 614 and 615, and the protrusion 643 is guided in the Z-axis direction by the slide plate 62 and the retaining cover 40, thus suppressing rattle in the X-axis and Z-axis directions.

[0022] [Configuration of the locking device] The locking device 70 switches between an operation restriction state, which restricts the pressing operation of the push button 64, which is an operating member, and an operation permission state, which allows the pressing operation. As shown in Figure 4, the locking device 70 comprises a locking member 71, a moving operating member 72 for moving the locking member 71, and a fixing screw 73 for fixing the moving operating member 72 to the locking member 71.

[0023] The locking member 71 consists of a roughly rectangular plate-shaped main body 711 that is positioned in a groove demarcated by the guide portions 614, 615 and surface portions 6141, 6151 of the guide frame 61. Recesses 712 are formed on both sides of the main body 711 along the X-axis direction. The recesses 712 are sized to allow the tip of the protrusion 643 to be positioned when the push button 64 is pressed. The main body 711 also has two through holes 713 and an elongated hole 714 that penetrate in the Z-axis direction through which the fixing screw 73 is inserted. The elongated hole 714 is elongated in the X-axis direction, and is configured so that the locking pin 21 can be positioned in the elongated hole 714 even when the locking member 71 is slid in the X-axis direction. Furthermore, both sides of the main body 711 are contact surfaces 715 that, when the push button 64 is pressed while the locking member 71 is in the operation restriction position, the tip of the protrusion 643 contacts it, restricting the operation of pressing the push button 64.

[0024] The movable operating member 72 includes an operating plate 721 positioned in the recess 411 of the central retaining cover 40 and slid by the user in the X-axis direction. The control panel 721 is provided with a logo display unit 7211 capable of displaying a logo. The logo displayed on the logo display unit 7211 includes at least one of the following: letters, numbers, symbols, or figures, and represents the brand or manufacturer of the watch.

[0025] As shown in Figure 5, the lower surface of the control panel 721 is provided with a pair of fixed shaft portions 722 and a pair of guide portions 723. Each of the pair of fixed shaft portions 722 is formed in a substantially cylindrical shape and has a screw hole into which a fixing screw 73 is screwed. In addition, the tip of the fixed shaft portion 722 on the Z2 direction side is formed to be insertable into the through hole 713 of the locking member 71. Each pair of guide portions 723 extends in the X2 direction from each fixed shaft portion 722 and is equipped with a pair of projections 724 that protrude toward each other. Each projection 724 is configured to have an inclined surface on the X2 direction side that abuts against the first inclined surface portion 4531, as shown in Figure 6, and an inclined surface on the X1 direction side that abuts against the second inclined surface portion 4532, as shown in Figure 11. The inclination angle of each inclined surface with respect to the X axis direction is set to match the inclination angles of the first inclined surface portion 4531 and the second inclined surface portion 4532. For this reason, the inclination angle of the inclined surface on the X2 direction side of the projection 724 with respect to the X axis direction is set to a smaller angle than the inclination angle of the inclined surface on the X1 direction side of the projection 724 with respect to the X axis direction. Furthermore, the outer circumferential surfaces of the pair of guide portions 723 in the Y-axis direction are designated as movement direction restricting surfaces 7231 along the X-axis direction. The movement direction restricting surfaces 7231 are planes that can contact the guide surface 415 of the surface portion 41, and the moving operating member 72 moves smoothly in the X-axis direction as the movement direction restricting surfaces 7231 are guided by the guide surface 415.

[0026] The fixing screw 73 is screwed into the fixing shaft portion 722, which is inserted into the through hole 713 with the locking member 71 in between, and fixes the moving operation member 72 to the locking member 71. As a result, the locking member 71 and the moving operation member 72 that constitute the locking device 70 move together in the X-axis direction. A recess is formed on the back surface of the locking member 71 to house the head of the fixing screw 73, so that the fixing screw 73 does not protrude from the back surface of the locking member 71. The locking device 70, consisting of a movable operating member 72 and a locking member 71, is provided so as to be slidable in the X-axis direction relative to the central fastening cover 40. As shown in Figures 6 to 10, moving in the X1 direction moves the locking device 70 to the operation permission position, and as shown in Figures 11 to 13, moving in the X2 direction moves the locking device 70 to the operation restriction position. The operation permission position is, as shown in Figure 6, when the recess 712 is positioned on the extension of the protrusion 643, and as shown in Figure 9, when the push button 64 is pressed, the protrusion 643 can be positioned in the recess 712. The operation restriction position is, as shown in Figure 11, when the recess 712 is positioned off the extension of the protrusion 643, and when the push button 64 is pressed, the protrusion 643 cannot be pressed against the contact surface 715 of the locking member 71.

[0027] When the locking device 70 is in the operation permission position, as shown in Figures 6 and 8, the projection 724 of the moving operation member 72 is in contact with the first inclined surface 4531 of the position holding component 45. From this state, when the moving operation member 72 is moved in the X2 direction, the projection 724 pushes the first inclined surface 4531 of the holding component 453, and the extension 452, holding component 453, and locking component 454 are elastically deformed by the spring properties of the position holding component 45 and deform in a direction toward each other. Then, when the projection 724 moves to a position where it overcomes the first inclined surface 4531 and contacts the second inclined surface 4532, as shown in Figures 11 and 13, the extension 452, holding component 453, and locking component 454 return to their original state by the spring properties of the position holding component 45. Furthermore, when the movement operating member 72 and the locking member 71 are slid from the movement restricting position in the X1 direction to the movement restricting position, the projection 724 moves over the holding portion 453. Therefore, when the user slides the movement operating member 72, a click sensation is transmitted when the projection 724 moves over the holding portion 453, allowing the user to understand that the locking member 71 has been moved to the operation restricting position or the operation permitting position. In addition, since the position holding component 45 is biased in a direction that separates the holding portions 453 from each other by its own springiness, the first inclined surface portion 4531 or the second inclined surface portion 4532 of the position holding component 45 presses against the projection 724 of the locking member 71. Therefore, unless the user slides the movement operating member 72, the locking member 71 is maintained in either the operation restricting position or the operation permitting position. That is, the locking member 71 is held in either the operation restricting position or the operation permitting position by the engagement of the projection 724 of the locking member 71 with the holding portion 453 of the position holding component 45. Furthermore, when the projection 724 contacts the holding portion 453, the extension portion 452, holding portion 453, and locking portion 454 of the position holding component 45 flex and elastically deform in a direction that brings them closer together as a whole. In this case, since the base portion 451 acts as a fulcrum, the position holding component 45 can be deformed with a smaller force as the position where it is pressed moves away from the base portion 451. In this embodiment, since the holding portion 453 pressed by the projection 724 is located between the extension portion 452 and the locking portion 454, it can be deformed with a smaller force compared to when it is pressed and elastically deformed at the position of the extension portion 452, and with a larger force compared to when it is pressed and elastically deformed at the position of the locking portion 454. Therefore, the operating load of the moving operation member 72 by the user can be appropriately set. Furthermore, the operating load of the locking device 70 can be adjusted by setting the inclination angle with respect to the X-axis direction of the first inclined surface portion 4531 and the second inclined surface portion 4532 of the holding portion 453, and the projection portion 724 that contacts them. In this embodiment, the inclination angle of the inclined surface on the X1 direction side of the first inclined surface portion 4531 and projection portion 724 of the holding portion 453 is about 30 degrees, and the inclination angle of the inclined surface on the X2 direction side of the second inclined surface portion 4532 and projection portion 724 of the holding portion 453 is about 40 degrees. Therefore, the operating load when moving the locking device 70 in the X2 direction, i.e., the operation restriction position, can be adjusted to be smaller than the operating load when moving it in the X1 direction, i.e., the operation permission position.

[0028] Next, the operating permission and operating restriction states of the push button 64 by the locking device 70 will be described. [Operation permission status] As shown in Figures 6 and 7, the state in which the movable operating member 72 is moved toward the X1 direction is the operation-permitted state. In the operation-permitted state, the locking member 71 is moved toward the X1 direction, and the recess 712 is positioned opposite the protrusion 643 of the push button 64 in the Y-axis direction. In the operation-permitted state shown in Figure 6, each slide plate 62 is biased by the coil spring 63 to move away from each other, and each engaging portion 621 is moved toward each other to engage with the lock pin 21. Also, the slide plate 62 is in contact with the push button 64, and the push button 64 is biased so that the flange portion 642 is in contact with the side wall portion 42.

[0029] In the operation-permitted state, the protrusion 643 of the push button 64 is positioned opposite the recess 712 of the locking member 71. As shown in Figure 9, when the user pushes the push button 64, the tip of the protrusion 643 is retracted into the recess 712, allowing the push button 64 to be pressed. This causes the pair of slide plates 62 to move toward each other and to the release position. As a result, as shown in Figures 9 and 10, the distance between each engaging portion 621 becomes greater than the umbrella portion 23 of the locking pin 21, and the engagement with the locking pin 21 is released. In this embodiment, the release position of the slide plate 62 is the position where one engaging portion 621 abuts against the other main body portion 620. Therefore, the user can reliably move the slide plate 62 to the release position by pushing the push button 64 until it can no longer move.

[0030] [Operation Restriction Status] As shown in Figures 11 and 12, the state in which the movable operating member 72 is moved toward the X2 direction is the restricted operation state. In the restricted operation state, the locking member 71 is moved toward the X2 direction. Even in the restricted operation state, as shown in Figure 12, each slide plate 62 is biased toward each other by the coil spring 63, and each engaging portion 621 is moved toward each other and engaged with the locking pin 21.

[0031] In the restricted operation state, as shown in Figure 11, the recess 712 is positioned so as not to face the protrusion 643 of the push button 64. Therefore, even if the user performs a push operation to press the push button 64, the push button 64 will come into contact with the contact surface 715 of the locking member 71, thus restricting its movement. As a result, the operation of the push button 64 is restricted, the slide plate 62 is maintained in a separated state by the coil spring 63, and the engagement state between the lock pin 21 and the engaging portion 621 is also maintained.

[0032] [How to use a wristwatch] Next, we will explain how to put the watch 100 on the user's wrist. In the operation restriction state shown in Figure 11, the locking member 71 restricts the pushing operation of the push button 64, but does not restrict the movement of the pair of slide plates 62 toward each other. Therefore, as shown in Figure 2, when the middle plate 20 and outer plate 30 of the folding member 2 are open, the locking member 71 can be positioned in the operation permission position, as well as when the locking member 71 is positioned in the operation restriction position. By closing the middle plate 20 and outer plate 30 and pressing the slide plate 62 of the clasp body 4 against the locking pin 21, the slide plate 62 can be engaged with the locking pin 21 and the wristwatch 100 can be attached without pressing the push button 64. Specifically, the upper end of the lock pin 21 is a frustoconical umbrella portion 23, and the diameter of the upper base of the umbrella portion 23 is smaller than the diameter of the lower base of the umbrella portion 23. Also, the lower sides of the opposing surfaces of the pair of engaging portions 621 are inclined surfaces 626 that are tilted in a direction away from each other. The distance between the lower ends of each inclined surface 626 is larger than the diameter of the upper base of the umbrella portion 23, and the distance between the upper ends of each inclined surface 626 is smaller than the diameter of the lower base of the umbrella portion 23. Therefore, when the folding member 2 is closed and the umbrella portion 23 is inserted between the engaging portions 621, the side surface of the umbrella portion 23 comes into contact with the inclined surface 626, pushing the pair of engaging portions 621, or the pair of slide plates 62, apart against the biasing force of the coil spring 63. Therefore, the side surface of the umbrella portion 23 of the lock pin 21, which is the engaged portion, and the inclined surface 626 of the slide plate 62, which is the engaging member, are guide surfaces that move the slide plate 62 from the engaged position to the released position against the biasing force of the coil spring 63 when the engaging portion 621 of the slide plate 62 comes into contact with the lock pin 21. Furthermore, when the clasp body 4 is pushed towards the middle plate 20, the umbrella portion 23 of the lock pin 21 disengages from the opposing surface of the engaging portion 621, and the shaft portion 22 is positioned between the engaging portions 621. As a result, the engaging portions 621, which were spread apart by the umbrella portion 23, move toward each other due to the biasing force of the coil spring 63. This causes each engaging portion 621 to contact and engage with the shaft portion 22 of the lock pin 21. In this way, the wristwatch 100 can be worn on the wrist.

[0033] Next, we will explain how to lock the wristwatch 100 to prevent it from coming off the wrist during activities such as diving. When the wristwatch 100 is worn on the wrist, if the locking member 71 is in the operation permission position, the moving operation member 72 should be moved toward the X2 direction to the operation restriction position where the recess 712 of the locking member 71 does not face the protrusion 643 of the push button 64. Alternatively, if the locking member 71 is already in the operation restriction position when the wristwatch 100 is worn on the wrist, that state should be maintained. When the locking member 71 is in the operating restriction position, even if an unintended external force is applied to the push button 64, the recess 712 of the locking member 71 is shifted from the position facing the protrusion 643, thereby restricting the pushing of the push button 64 and preventing the engagement between the locking pin 21 and the slide plate 62 from being released.

[0034] Next, we will explain how to remove the watch 100 from your wrist. When removing the wristwatch 100, if the locking member 71 is in the operation restriction position, the moving operation member 72 is moved in the X1 direction to move the locking member 71 to the operation permission position. This allows the recess 712 of the locking member 71 to be positioned on the extension of the protrusion 643 of the push button 64, making the push button 64 operable. Then, with the locking member 71 in the operation permission position, each push button 64 is pressed to move the engaging parts 621 away from each other, releasing the engagement between the locking pin 21 and the sliding plate 62, and the folded middle plate 20 and outer plate 30 are opened. As a result, the umbrella portion 23 of the locking pin 21 passes between the engaging parts 621 and is pulled out from the insertion hole 6111 of the guide frame 61. In this way, the wristwatch 100 can be removed from the wrist.

[0035] [Effects of the First Embodiment] According to the clasp 1 of the first embodiment, by moving the locking member 71 to the operation-restricting position, the pushing operation of the push button 64 is restricted, and the slide plate 62 cannot be moved to the release position. Therefore, even if an unintended external force is applied to the push button 64, the engagement between the slide plate 62 and the locking pin 21 can be maintained. For this reason, by moving the locking member 71 to the operation-restricting position, it is possible to reliably prevent the clasp 1 from coming undone during diving or other activities. Furthermore, since the slide plate 62 and the push button 64 are constructed as separate components, and the locking member 71 is structured to restrict only the pushing operation of the push button 64, when the slide plate 62 is not engaged with the lock pin 21, the slide plate 62 can be engaged with the lock pin 21 without operating the push button 64. For this reason, even if the locking member 71 is accidentally moved to the operation restriction position when the clasp 1 is open, that is, when the folding member 2 is opened and the slide plate 62 is not engaged with the lock pin 21, the slide plate 62 can be moved and engaged with the lock pin 21. Consequently, the clasp 1 will not fail to close, nor will it be damaged by trying to force it closed, and the wristwatch 100 with the clasp 1 can be securely worn on the wrist. Furthermore, since the slide plate 62 does not move when the moving operation member 72 is operated to move the locking member 71, it is also possible to prevent the slide plate 62 from moving and coming off the locking pin 21 when switching between the operation permission position and the operation restriction position.

[0036] With the locking member 71 moved to the operation permission position, the clasp 1 can be released by operating the push button 64. Therefore, in everyday use, the operability when putting on or taking off the wristwatch 100 is not reduced, and it can be used with the same operation as a typical clasp without a locking device 70.

[0037] Since the slide plate 62 is brought into contact with the push button 64 by a coil spring 63, there is no need to provide a separate spring to bias the push button 64, which is separate from the slide plate 62, thus reducing the number of parts and lowering costs. Furthermore, by providing a protrusion 643 on the push button 64 and a recess 712 on the locking member 71 that is positioned opposite the protrusion 643 in the operation permission position and moves away from the position opposite the protrusion 643 in the operation restriction position, it is possible to switch between allowing and restricting the pressing operation of the push button 64, thus eliminating the need for a complex structure and further reducing costs. Furthermore, the protrusion 643 of the push button 64 is positioned and guided between the guide portions 614 and 615 in the X-axis direction, and between the slide plate 62 and the clasp cover 40 in the Z-axis direction, thus preventing the push button 64 from tilting in the X-axis and Z-axis directions. In addition, the protrusion 643 of the push button 64 is formed with a relatively long dimension in the Y-axis direction and is positioned along the surface of the slide plate 62, allowing the push button 64 to move smoothly in the Y-axis direction. As a result, strong contact between the inner surface of the elongated hole 421 of the clasp cover 40 and the push button 64 can be prevented, reducing frictional resistance during operation of the push button 64 and preventing damage to the push button 64 and the clasp cover 40.

[0038] The locking device 70 can hold the locking member 71 in the permitted operation position and the restricted operation position by engaging the projection 724 of the movable operating member 72 with the holding portion 453 of the position holding component 45, thereby preventing unintended movement of the locking member 71. The position-holding component 45, which restricts the movement of the movable operating member 72 and the locking member 71, is positioned between a pair of guide portions 723 of the movable operating member 72. The pair of holding portions 453 of the position-holding component 45 are configured to apply load in the Y1 and Y2 directions, that is, in directions perpendicular to the direction of movement of the locking member 71. As a result, the locking device 70 can be made compact, and the intermediate fastener 1 can also be made compact. The guide portion 723 of the moving operation member 72 has a movement direction restricting surface 7231 provided along the guide surface 415 of the opening 412. This allows the moving operation member 72 to move smoothly in the X-axis direction and prevents the moving operation member 72 from tilting during operation. Therefore, the operability of the moving operation member 72 can be improved. Furthermore, when the moving operation member 72 is operated to move the locking member 71 to the permitted operation position and the restricted operation position, the projection 724 of the moving operation member 72 overcomes the holding portion 453 of the position holding component 45, thereby providing a tactile feedback for operating the moving operation member 72. Therefore, by adjusting the operating load by setting the material of the position holding component 45, the shape of the holding portion 453, the shape of the projection 724, etc., the tactile feedback for operating the moving operation member 72 can be appropriately set.

[0039] By positioning the locking member 71 between the surface portion 41 of the clasp cover 40 and the engagement unit 60, and by overlapping the locking member 71 and the engagement unit 60 in the Z-axis direction, the length dimension of the clasp body 4 in the X-axis direction can be shortened compared to when the locking member is positioned to the side of the engagement unit 60, i.e., in the X-axis direction. Furthermore, since an elongated hole 714 is formed in the locking member 71 to prevent interference with the locking pin 21, it is not necessary to offset the locking member 71 in the X-axis direction relative to the locking pin 21, and in this respect as well, the length dimension of the clasp body 4 in the X-axis direction can be shortened. In addition, since the height position of the locking member 71 in the Z-axis direction does not need to be higher than the umbrella portion 23 of the locking pin 21, the thickness dimension of the clasp body 4 can also be reduced.

[0040] Since the locking member 71 and the moving operation member 72 are connected by a fixing screw 73 through the opening 412 of the clasp cover 40, the moving operation member 72 can be positioned in the center in the width direction on the surface portion 41 of the clasp cover 40, and the opening 412 can be hidden. This improves the appearance of the clasp 1. Since the movable operating member 72 is equipped with a logo display section 7211, the logo of a brand or manufacturer can be displayed, emphasizing the brand name or manufacturer name and further improving the appearance of the clasp 1. In addition, since the movable operating member 72 is connected to the locking member 71 with a fixing screw 73, the movable operating member 72 can be replaced, and maintenance can be easily performed if the movable operating member 72 is damaged. Furthermore, the material of the movable operating member 72 can be different from that of the locking member 71, enabling customization using different materials. Since the locking member 71 slides in the direction of connection between the clasp body 4 and the first band, that is, in the longitudinal direction of the first band 11 and the second band 12, the locking member 71 can be easily moved to both the operation restriction position and the operation permission position.

[0041] Since the holding portion 453 is provided at an intermediate position between the base portion 451 and the locking portion 454 of the position holding component 45, the biasing force that biases the projection portion 724 can be set to an appropriate value. In addition, since the inclination angles of the first inclined surface portion 4531 and the second inclined surface portion 4532 of the holding portion 453, and the inclination angle of the projection portion 724 can be freely set, the setting of the operating load when the locking device 70 is slid can be adjusted, improving operability.

[0042] [Second Embodiment] The clasp 1B of the second embodiment will be described with reference to Figures 14 and 15. The clasp 1B differs from the first embodiment in the configuration of the clasp cover 40B, the movable operating member 72B, and the position holding part 45B, but the other components are the same as in the first embodiment, so the same reference numerals are used and the description is simplified or omitted. The clasp cover 40B has a modified shape in the opening 412B of its surface portion 41B to match the position-holding component 45B. Specifically, the opening 412B has the same protrusion 413 and guide surface 415 as in the first embodiment. On the other hand, the recess 414B differs from the first embodiment in that it is a curved recess.

[0043] The position-holding part 45B is formed by bending a metal material, similar to the position-holding part 45, and comprises a base portion 451B, a pair of extension portions 452B, a pair of holding portions 453B, and a pair of locking portions 454B. The base portion 451B is formed in a curved shape in plan view and is positioned along the curved recess 414B. The extension portion 452B extends from the base portion 451B in approximately the X1 direction and is formed to move closer to each other as it moves in the X1 direction. The retaining portion 453B is formed continuously with the extension portion 452B and comprises a first inclined surface portion 4531B ​​that is inclined to move away from each other as it moves toward the X1 direction, and a second inclined surface portion 4532B that is formed continuously with the first inclined surface portion 4531B ​​and is inclined to move toward each other as it moves toward the X1 direction. For this reason, the retaining portion 453B has a protruding shape at the connecting portion of the first inclined surface portion 4531B ​​and the second inclined surface portion 4532B that protrudes outward. The locking portion 454B is formed continuously with the second inclined surface portion 4532B and is folded inward. The position-holding component 45B is positioned in the opening 412B of the central clasp cover 40B by placing its base 451B in the recess 414B and bringing its locking portion 454B into contact with the protrusion 413.

[0044] The movable operating member 72B comprises a fixed shaft portion 722 and a guide portion 723B. The fixed shaft portion 722 is formed in a substantially cylindrical shape, similar to the fixed shaft portion 722 of the first embodiment. The guide portion 723B differs from the guide portion 723 of the first embodiment in that it does not have a projection portion 724. Therefore, in the movable operating member 72B, the fixed shaft portion 722 functions as a projection portion. That is, as shown in Figure 14, the fixed shaft portion 722 abuts against the second inclined surface portion 4532B in the operation permission position, restricting movement in the X2 direction. Also, as shown in Figure 15, the fixed shaft portion 722 abuts against the first inclined surface portion 4531B ​​in the operation restriction position, restricting movement in the X1 direction. Therefore, the movement of the moving operating member 72B is restricted in the X-axis direction by the engagement of the fixed shaft portion 722 with the holding portion 453B. When the user operates the moving operating member 72B to move it in the X-axis direction, the fixed shaft portion 722 pushes the holding portion 453B, causing it to deform in a direction that brings them closer together. When the fixed shaft portion 722 moves over the holding portion 453B, the holding portion 453B returns to its original position due to the spring action of the position holding component 45B. Therefore, in the second embodiment, as in the first embodiment, the user can feel a click when operating the movement operating member 72B, and can easily confirm that it has been switched to the operation permitted position and the operation restricted position. Furthermore, since the components other than the clasp cover 40B, the position holding part 45B, and the movement operating member 72B are the same as in the first embodiment, the same effects as in the first embodiment can be achieved.

[0045] [Third Embodiment] The clasp 1C of the third embodiment will be described with reference to Figures 16 and 17. The clasp body 4C of the clasp 1C comprises a clasp cover 40B, an engagement unit 60C, and a locking device 70. The clasp cover 40B is the same as in the second embodiment, and a position-holding component 45B is positioned in the opening 412B. The engagement unit 60C comprises a guide frame 61C different from that of the first embodiment, and the same slide plate 62, coil spring 63, and push button 64 as in the first embodiment. Guide frame 61C differs from guide frame 61 of the first embodiment in that the surface portion 616 is formed continuously in the X-axis direction, and through holes 617 are formed at the center in the X-axis and Y-axis directions, allowing the lock pin 21 to be positioned. Therefore, in guide frame 61C, the slide plate 62 is arranged in a hollow cylindrical space partitioned by the bottom portion 611, the surface portion 616, and the side portions 612 and 613. As a result, as shown in Figure 17, the protrusion 643 of the push button 64 is positioned along the surface of the surface portion 616.

[0046] In the third embodiment, the clasp 1C can achieve the same effects as in the first and second embodiments. Furthermore, since the surface portion 616 of the guide frame 61C is formed continuously in the X-axis direction and the protrusion 643 of the push button 64 is positioned along the surface of the surface portion 616, tilting of the push button 64 can be prevented, just as in the first and second embodiments. In addition, since the protrusion 643 and the slide plate 62 are separated by the surface portion 616 and do not come into contact, the slide plate 62 and the push button 64 can move smoothly in the Y-axis direction.

[0047] [Differentiation] This disclosure is not limited to the embodiments described above, and any modifications, improvements, etc., to the extent that they can achieve the purpose of this disclosure are included. The configuration of the engaging member and the engaged portion is not limited to the configuration of each embodiment described above. For example, a configuration in which the engaging member moves in the X-axis direction and engages with the engaged portion may be adopted. That is, the engaged portion is configured by forming a projection that protrudes toward the X2 direction or an engaging groove that opens toward the X2 direction on the middle plate 20. In addition, an engaging member is provided that is biased toward the X1 direction and contacts the push button at an angle, and moves toward the X2 direction when the push button is pressed. Even with such a configuration, the same effects as each embodiment can be achieved by providing a locking member that can restrict the pressing operation of the push button. Furthermore, the operating member is not limited to a pair of push buttons; it may be a single button, a lever, a rotary knob, or anything else that can move the engaging member such as the slide plate 62 by pushing, sliding, or rotating. The biasing means is not limited to a coil spring 63 separate from the slide plate 62, but can utilize various spring members such as torsion springs. Furthermore, the spring portion may be integrally formed with the engaging member such as the slide plate 62, so that the engaging member also serves as the biasing member.

[0048] Furthermore, the locking member 71 and the moving operating member 72 are not limited to being connected by a fixing screw 73, but may also be connected by adhesive or welding. In other words, the locking device is not limited to the configuration of each embodiment described above, and can be any device that can switch between restricting or allowing the operation of an operating member such as a push button 64. The locking device 70 is not limited to having a projection 724 formed on the movable operating member 72, but may also have a projection formed on the locking member 71. The guide portion 723 of the locking device 70 is not limited to having a planar movement direction restricting surface 7231 along the guide surface 415, but may also have a plurality of projections that can contact the guide surface 415, as long as it is a structure that is guided along the guide surface 415. The position-holding parts 45 and 45B are not limited to metal, but may be made of synthetic resin or the like. Furthermore, the shape and structure of the position-holding parts are not limited to the above embodiment, as long as they can move the locking device 70 to the operation-permitted position and the operation-restricted position, and can hold it in each position. Clasp 1 can be used not only for watch bands, but also for bands on accessories such as bracelets and necklaces.

[0049] [Summary of this disclosure] The clasp of the present disclosure is a clasp connecting a first band and a second band, comprising: a connecting member connected to the first band side and having an engaging portion; and a clasp body connected to the second band side, wherein the clasp body comprises: an engaging member movable to an engaging position in which it can engage with the engaging portion and to a release position in which it can release engagement with the engaging portion; an operating member for moving the engaging member from the engaging position to the release position; and a locking device movable to an operating restriction position for restricting the operation of the operating member and to an operating permission position for permitting the operation of the operating member, wherein the locking device is the operating Regardless of whether the device is in the restricted position or the permitted position, when the engaging member is not engaged with the engaged portion, the engaging member can be engaged with the engaged portion without operating the operating member; when the engaging member is engaged with the engaged portion, the engagement is released by moving the engaging member to the release position using the operating member; when the locking device is moved to the restricted position, the operating member is prevented from moving the engaging member to the release position; and the operating member is characterized by having a protrusion that projects toward the engaging member. According to this disclosure, by moving the locking device to the operating restriction position, the engaging member is prevented from moving to the release position, and the engaged state between the engaging member and the engaged part can be maintained even if an unintended external force is applied to the operating member. Therefore, by moving the locking device to the operating restriction position, it is possible to prevent the clasp from coming undone during diving or other activities. Furthermore, the engaging member and the operating member are separate components, and the locking device restricts only the operation of the operating member. When the engaging member is not engaged with the engaged part, the engaging member can be engaged with the engaged part without operating the operating member. Therefore, even if the locking device is accidentally moved to the restricted operation position when the clasp is released, that is, when the engaging member is not engaged with the engaged part, the engaging member can still be engaged with the engaged part. Thus, it is possible to prevent the clasp from not closing or from being damaged by forcing it closed. Furthermore, since the operating member has a protrusion that extends toward the engaging member, rattling of the operating member can be suppressed.

[0050] In the clasp of the present disclosure, it is preferable that the locking device comprises a contact surface that contacts the protrusion when the operating member is operated while in the operation restricting position, and a recess into which the protrusion is inserted when the operating member is operated while in the operation permitting position. According to this disclosure, by simply forming a contact surface and a recess on the side of the locking device, it is possible to switch between an operation restriction state and an operation permission state, thereby simplifying the configuration of the locking device and reducing manufacturing costs.

[0051] In the clasp of the present disclosure, it is preferable that a cover member is provided, and in a side view, the protrusion of the operating member is positioned in the space provided between the cover member and the engaging member. According to this disclosure, since the protrusion of the operating member is positioned between the cover member and the engaging member, the operating member can be restricted from moving in the thickness direction of the clasp body. Therefore, it is possible to prevent the operating member from tilting in the thickness direction and making strong contact with the inner surface of the hole through which the operating member is inserted in the clasp cover, thereby reducing resistance during operation of the operating member and preventing damage.

[0052] In the clasp of this disclosure, it is preferable to include a position-holding component that holds the locking device in the position where it is moved to the operation-permitting position and the operation-restricting position. According to this disclosure, the position of the locking device can be maintained by a position-holding component, so that the locking device can only be moved when operated by a user. Therefore, it is possible to prevent the locking device from moving to the operation-permitted position without user operation, and the locking device can be reliably held in the operation-permitted position and the operation-restricted position.

[0053] In the clasp of the present disclosure, the locking device comprises a pair of projections protruding toward the position-holding component, the position-holding component comprises a pair of retaining parts positioned between the pair of projections and engaging with and holding each projection, and when the locking device moves between the operation-restricting position and the operation-permitting position, the pair of retaining parts are pressed by the pair of projections and elastically deformed, and the projections may be configured to move over the retaining parts. According to this disclosure, a pair of projections of the locking device engage with a pair of retaining parts of the position-holding component, and when the locking device is moved to the operating restriction position and the operating permission position, the retaining parts are pressed by the projections and elastically deformed, and when the projections overcome the retaining parts, the retaining parts return to their original engagement position. As a result, the user can feel a click when moving the locking device and can easily understand that the locking device has moved to the operating permission position or the operating restriction position.

[0054] In the clasp of the present disclosure, a cover member may be provided, the cover member having a guide surface formed along the direction of movement of the locking device, and the locking device having a guide portion guided by the guide surface of the cover member. According to this disclosure, the guide surface of the cover member can guide the guide portion of the locking device, allowing the locking device to move smoothly.

[0055] In the clasp of the present disclosure, the clasp body preferably includes a biasing member that biases the engaging member toward the engagement position, and at least one of the engaged portion and the engaging member has a guide surface that moves the engaging member from the engagement position to the release position against the biasing force of the biasing member when the engaging member is brought into contact with the engaged portion. In this disclosure, when the engaging member is brought into contact with the engaged portion, the engaging member can be moved from the engaged position to the released position against the biasing force of the biasing member. Therefore, from the open state of the clasp, the clasp can be easily closed simply by bringing the connecting member and the clasp body into contact.

[0056] In the clasp of the present disclosure, the locking device preferably has a movable operating member operated by the user, and the movable operating member preferably includes a logo display section on which a logo is displayed. In this disclosure, a logo can be displayed on the movable operating member operated by the user in the locking device, thereby enhancing brand image and other aspects.

[0057] In the clasp of this disclosure, it is preferable that the locking device moves in the connecting direction in which the clasp body and the first band are connected. In this disclosure, the locking device is slid in the direction of connection between the clasp body and the first band, that is, in the longitudinal direction of the first band and the second band, so that the locking device can be easily moved to both an operation-restricting position and an operation-allowing position.

[0058] The band of this disclosure is characterized by comprising the aforementioned clasp, and the first band and the second band connected to the clasp. In the band of this disclosure, the engaging member can be engaged with the engaged portion even if the locking device is accidentally moved to the operating restriction position. Therefore, the band having the clasp of this disclosure can be securely attached to the wrist or the like.

[0059] The watch of this disclosure is characterized by having the aforementioned band. In the watch of this disclosure, even if the locking device is accidentally moved to the operating restriction position, the engaging member can still be engaged with the engaged portion. Therefore, the watch having the clasp of this disclosure can be securely worn on the wrist. [Explanation of Symbols]

[0060] 1...Clasp, 1B...Clasp, 1C...Clasp, 2...Folding member, 4...Clasp body, 4C...Clasp body, 10...Outer case, 11...First band, 12...Second band, 20...Middle plate, 21...Lock pin, 22...Shaft part, 23...Umbrella part, 30...Outer plate, 40...Clasp cover, 40B...Clasp cover, 41...Surface part, 41B...Surface part, 45...Position holding part, 45B...Position holding part, 50...Clasp frame part, 60...Engagement unit, 60C...Engagement unit, 61...Guide frame, 61C...Guide frame, 62...Slide plate, 63...Coil spring, 64...Push button, 70...Locking device, 71...Locking member, 72...Movement operating member, 72B...Movement operating member, 73...Fixing screw, 100...wristwatch, 412...opening, 412B...opening, 414...recess, 414B...recess, 415...guide surface, 453...holding part, 453B...holding part, 614...guide part, 615...guide part, 616...surface part, 621...engaging part, 622...connecting part, 623...contact surface, 626...inclined surface, 641...button body, 642...flange part, 643...protrusion, 712...recess, 715...contact surface, 723...guide part, 723B...guide part, 724...projection part, 4531...first inclined surface part, 4531B...first inclined surface part, 4532...second inclined surface part, 4532B...second inclined surface part, 6141...surface part, 6151...surface part, 7211...logo display part, 7231...movement direction restricting surface.

Claims

1. A clasp connecting the first band and the second band, A connecting member connected to the first band and having an engaged portion, It has a clasp body connected to the second band side, The aforementioned clasp body is, An engaging member that can move to an engaging position in which it can engage with the engaged portion, and to a release position in which it can release engagement with the engaged portion, An operating member for moving the engaging member from the engaged position to the released position, The system includes a locking device that can move to an operation restriction position that restricts the operation of the operating member, and to an operation permission position that permits the operation of the operating member, Regardless of whether the locking device is in the operation restriction position or the operation permission position, when the engaging member is not engaged with the engaged portion, the engaging member can be engaged with the engaged portion without operating the operating member. When the engaging member is engaged with the engaged portion, the engagement is released by moving the engaging member to the release position using the operating member. When the locking device is moved to the operation restriction position, the operating member restricts the engagement member from moving to the release position. The operating member is provided with a protrusion that extends toward the engaging member. A clasp characterized by the following features.

2. In the clasp according to claim 1, The locking device is When the operating member is in the aforementioned restricted position, the contact surface that contacts the protrusion when the operating member is operated, When the operating member is operated while in the position where operation is permitted, it comprises a recess into which the protrusion is inserted. A clasp characterized by the following features.

3. In the clasp according to claim 1, Equipped with a cover member, In a side view, the protrusion of the operating member is positioned in the space provided between the cover member and the engaging member. A clasp characterized by the following features.

4. In the clasp according to claim 1, The locking device is provided with a position-holding component that holds it in the position where it is permitted to operate and where it is restricted to operate. A clasp characterized by the following features.

5. In the clasp according to claim 4, The locking device comprises a pair of protrusions that project toward the position-holding component, The position-holding component is positioned between the pair of protrusions and comprises a pair of holding parts that engage with and hold each of the protrusions. When the locking device moves between the operation restriction position and the operation permission position, the pair of retaining parts are pressed by the pair of projections and elastically deformed, and the projections are configured to move over the retaining parts. A clasp characterized by the following features.

6. In the clasp according to claim 1, Having a cover member, The cover member is provided with a guide surface formed along the direction of movement of the locking device, The locking device includes a guide portion that is guided by the guide surface of the cover member. A clasp characterized by the following features.

7. In the clasp according to claim 1, The aforementioned clasp body is, The engaging member is further provided with a biasing member that biases it toward the engaging position, At least one of the engaged portion and the engaging member has a guide surface that moves the engaging member from the engaged position to the released position against the biasing force of the biasing member when the engaging member is brought into contact with the engaged portion. A clasp characterized by the following features.

8. In the clasp according to claim 1, The locking device has a movable operating member that is operated by the user, The aforementioned moving operation member includes a logo display section on which a logo is displayed. A clasp characterized by the following features.

9. In the clasp according to claim 1, The locking device moves in the connecting direction in which the clasp body and the first band are connected. A clasp characterized by the following features.

10. A clasp according to any one of claims 1 to 9, A band characterized by comprising the first band and the second band connected to the clasp.

11. A watch comprising the band described in claim 10.

Images