Strap and watch

Abstract

A watch includes a first strap attached to one end side of a watch body, a second strap attached to another end side of the watch body, and a clasp that couples the first strap and the second strap, in which the clasp is provided with the cover member, a plurality of engaged portions arranged on a back surface side of the cover member at a fixed position with respect to the cover member, and a moving member that is joined to the first strap, that has an engaging pin configured to selectively engage with any of the plurality of engaged portions, and that is movable with respect to the cover member and the clasp is provided with a scale mark that indicates a position at which the plurality of engaged portions and the engaging pin engage in a plan view seen from the back surface side of the cover member.

Description

BACKGROUND1. Technical Field

[0001] The present disclosure relates to a strap and a watch.2. Related Art

[0002] JP-A-2023-113263 discloses a configuration for a strap length adjustment mechanism with which it is possible to adjust the strap length to a desired length by moving an engaging pin that engages with a groove in the clasp portion in the longitudinal direction of the strap.

[0003] However, the configuration disclosed in JP-A-2023-113263 has a problem in that it is difficult for a user to grasp the engagement position between the engaging pin and the groove when adjusting the strap length.SUMMARY

[0004] According to an aspect of the present disclosure, a strap includes a first strap attached to one end side of a watch body, a second strap attached to another end side of the watch body, and a clasp coupling the first strap and the second strap, in which the clasp is provided with a cover member, a plurality of engaged portions arranged on a back surface side of the cover member at a fixed position with respect to the cover member, and a moving member that is joined to the first strap, that has an engaging portion configured to selectively engage with any of the plurality of engaged portions, and that is movable with respect to the cover member, and the clasp is provided with a scale mark that indicates a position where the plurality of engaged portions and the engaging portion engage in a plan view seen from the back surface side of the cover member.

[0005] According to an aspect of the present disclosure, a watch is provided with the strap described above.BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG. 1 is a perspective view showing a configuration of a strap. FIG. 2 is a plan view showing a configuration of a watch. FIG. 3 is a perspective view showing a configuration of a clasp. FIG. 4 is an exploded perspective view showing a configuration of an adjustment portion. FIG. 5 is an exploded perspective view showing a configuration of a pressing case and a case. FIG. 6 is an exploded perspective view showing the configuration of the pressing case and the case. FIG. 7 is a perspective view showing a configuration of a pressing portion. FIG. 8 is a cross-sectional view showing the configuration of the pressing portion. FIG. 9 is a side surface view showing the configuration of the pressing portion. FIG. 10 is a side surface view showing the configuration of the pressing portion. FIG. 11 is a perspective view showing a configuration of a cover member. FIG. 12 is a plan view of the watch. FIG. 13 is a back surface view of the watch. FIG. 14 is a left side surface view of the watch. FIG. 15 is a right side surface view of the watch. FIG. 16 is a plan view of the watch. FIG. 17 is a bottom surface view of the watch. FIG. 18A is a front surface view of the strap. FIG. 18B is a back surface view of the strap. FIG. 19A is a left side surface view of the strap. FIG. 19B is a right side surface view of the strap. FIG. 20A is a plan view of the strap. FIG. 20B is a bottom surface view of the strap. FIG. 21 is a front surface view of the clasp. FIG. 22 is a back surface view of the clasp. FIG. 23 is a left side surface view of the clasp. FIG. 24 is a right side surface view of the clasp. FIG. 25 is a plan view of the clasp. FIG. 26 is a bottom surface view of the clasp. FIG. 27 is a front surface view of the clasp. FIG. 28 is a front surface view of the clasp. FIG. 29 is a front surface view of the clasp. FIG. 30 is a front surface view of the clasp. FIG. 31 is a front surface view of the clasp. FIG. 32 is a front surface view of the clasp. FIG. 33 is a front surface view of the clasp. FIG. 34 is a front surface view of the clasp. FIG. 35 is a front surface view of the clasp. FIG. 36 is a front surface view of the clasp. FIG. 37 is a front surface view of the clasp. FIG. 38 is a front surface view of the clasp. FIG. 39 is a front surface view of the clasp. FIG. 40 is a front surface view of the clasp. FIG. 41 is a front surface view of the clasp. FIG. 42 is a front surface view of the clasp. FIG. 43 is a front surface view of the clasp. FIG. 44 is a perspective view of the clasp. FIG. 45 is a front surface view of the clasp. FIG. 46 is a perspective view of the clasp. FIG. 47 is a front surface view of the clasp. FIG. 48 is a perspective view of the clasp. FIG. 49 is a perspective view of the clasp. FIG. 50 is a perspective view of the clasp. FIG. 51 is a front surface view of the clasp. FIG. 52 is a perspective view of the clasp. FIG. 53 is a front surface view of the clasp. FIG. 54 is a front surface view of a clasp of a modified example. FIG. 55 is a perspective view of a clasp of a modified example. DESCRIPTION OF EMBODIMENTS

[0007] First, a description will be given of a configuration of a strap 100 and a watch 150 with reference to FIG. 1 and FIG. 2.

[0008] As shown in FIG. 1, the strap 100 is formed of a first strap 10, a second strap 15, and a clasp 35 that couples the first strap 10 and the second strap 15. The first strap 10 is attached to one end side of a watch body 1 (refer to FIG. 2). The second strap 15 is attached to another end side of the watch body 1.

[0009] The clasp 35 is formed to have a cover member 30, an adjustment portion 80, a middle plate 31, and a lower plate 32. The clasp 35 is formed such that pressing buttons 33 provided on both side surfaces of the cover member 30 release a latch pin 41 and deploy and extend the clasp 35 as shown in FIG. 1.

[0010] As shown in FIG. 2, the end of the first strap 10 is coupled to bows 5 located at the 12 o'clock side of the watch 150. Similarly, the end of the second strap 15 is coupled to bows 6 located at the 6 o'clock side of the watch 150. In FIG. 2, the watch 150 is a three-hand analog watch, but may be any device that is worn on the wrist, for example, a digital watch or a smart watch, without being limited thereto.

[0011] As shown in FIG. 1, the first strap 10 is formed of a plurality of joined blocks 2 and the like. An end block 2b at the end of the first strap 10 is coupled to the adjustment portion 80 in the cover member 30 via a joining block 11. A description will be given below of the adjustment portion 80.

[0012] The second strap 15 is formed of a plurality of the joined blocks 2 and the like. An end block 2c at the end of the second strap 15 is coupled to one end of the lower plate 32. The lower plate 32 is provided with the latch pin 41. The other end of the lower plate 32 is coupled to one end of the middle plate 31. The other end of the middle plate 31 is coupled to one end of the cover member 30.

[0013] The lower plate 32 is rotatably joined to the end block 2c of the second strap 15 and one end of the middle plate 31. The middle plate 31 is rotatably joined to one end of the cover member 30 and the other end of the lower plate 32. The clasp 35 is formed to be able to switch between a state in which the cover member 30, the middle plate 31, and the lower plate 32 are folded in a Z-shape and a state in which the above are deployed and extended.

[0014] The cover member 30 is a buckle and has an overall curved shape in consideration of ease of wearing on the wrist. The cover member 30 is approximately rectangular in plan view and is arranged with the longitudinal direction thereof aligned with the extension direction of the first strap 10. The width of the cover member 30 in the transverse direction is approximately the same as the width of the first strap 10. In the folded state, the middle plate 31 and the lower plate 32 have a curve similar to that of the cover member 30 so as to follow the back surface of the cover member 30.

[0015] In a preferred example, each part forming the strap 100 is formed of titanium. The material is not limited to being titanium and may be any metal that is hard and has a good texture, for example, stainless steel, may be used.

[0016] Next, a description will be given of the configuration of the adjustment portion 80 with reference to FIG. 3 to FIG. 6. FIG. 3 is a transparent perspective view showing the configuration of the clasp 35. Springs 26 are not shown in FIG. 5 and FIG. 6.

[0017] As shown in FIG. 3, the adjustment portion 80 is formed to have a pair of rails 20 and 21, an adjustment block 72, a pressing portion 73, and an engaging pin 27 as an engaging portion.

[0018] The rail 20 is a rail-shaped member arranged along a side wall 30a of the cover member 30. One end of the rail 20 is provided with a through hole 20a (refer to FIG. 4) for joining with the middle plate 31. Another end of the rail 20 is provided with a fixing hole 20b (refer to FIG. 4) for fixing the rail 20 to the side wall 30a. Four length-adjusting grooves 29 are provided at equal intervals on the side of the fixing hole 20b as engaged portions.

[0019] The rail 21 is a member that pairs with the rail 20 and is arranged along a side wall 30b of the cover member 30. The rail 21 has the same configuration as the rail 20. More specifically, one end of the rail 21 is provided with a through hole 21a (refer to FIG. 4) for joining with the middle plate 31 and another end is provided with a fixing hole 21b (refer to FIG. 4) for fixing the rail 21 to the side wall 30b. The rail 21 is also provided with the four length-adjusting grooves 29 as engaged portions.

[0020] As shown in FIG. 4, the adjustment block 72 is a joining portion and is provided with a protrusion 22a projecting toward the first strap 10 side and protrusions 72b and 72c branching into two on the opposite side to the protrusion 22a.

[0021] The protrusion 22a is provided with a through hole 4 for joining with the joining block 11. The adjustment block 72 is arranged between the rail 20 and the rail 21. In addition, the joining block 11, which couples the adjustment block 72 with the end block 2b of the first strap 10, is also formed to be approximately the same size as the adjustment block 72 (refer to FIG. 3). The joining block 11 is arranged between the rail 20 and the rail 21.

[0022] As shown in FIG. 4, in the protrusions 72b and 72c, portions that contact the pressing portion 73 are formed one step lower. The portions that are one step lower are first surfaces 76. The protrusions 72b and 72c are provided with through holes 28.

[0023] The pressing portion 73 is formed of a pressing case 74, a case 75, two of the springs 26, and the like. The pressing case 74 is provided with a storage portion 74a for storing the two springs 26 and a portion of the case 75. A long hole 74b which is an oval guide hole is formed in the storage portion 74a. The back side of the storage portion 74a is provided with a bottom surface 65 that is one step lower than the base portion of the pressing case 74.

[0024] As shown in FIG. 6, the bottom surface 65 of the pressing case 74 is provided with a groove 78 that fits with the engaging pin 27 (refer to FIG. 4). An island-shaped protrusion having the bottom surface 65 is stored in the storage portion 47 (refer to FIG. 4) between the two protrusions 72b and 72c of the adjustment block 72 (refer to FIG. 4). On both sides of the bottom surface 65, second surfaces 66 (refer to FIG. 6) are provided that are one step lower than the bottom surface 65. The two second surfaces 66 are portions corresponding to the two first surfaces 76 of the adjustment block 72.

[0025] As shown in FIG. 4, the springs 26 are elastic members and, in a preferred example, conical springs are used. The material of the springs 26 is, for example, a piano wire. Any material with which it is possible to obtain the necessary spring force may be used and, for example, hard steel wire or stainless steel wire may be used. By using a conical spring, it is possible to make the contact height during compression lower than with a normal coil spring and to form the pressing portion 73 and the adjustment portion 80 to be compact.

[0026] As shown in FIG. 6, the case 75 is provided with two mounting portions 77 for mounting the two springs 26. A shaft 75a is provided between the two mounting portions 77. The shaft 75a is a protrusion that stands upright from the base of the case 75. The planar shape of the shaft 75a is an oval. A long hole 68 through which the engaging pin 27 is inserted is provided in the side surface of the shaft 75a.

[0027] The shaft 75a is inserted into the long hole 74b of the pressing case 74. In a state where the shaft 75a is inserted, the engaging pin 27 is inserted into the long hole 68 of the shaft 75a. The length of the long hole 68 is set to a length that enables the springs 26 to expand and contract in a state where the engaging pin 27 is inserted. The shaft 75a plays the role of a guide member that makes the operation of the pressing case 74 smooth when the pressing case 74 moves up and down along with expansion and contraction operations of the springs 26.

[0028] Specifically, in a state where the two springs 26 are set on the two mounting portions 77 of the case 75, the case 75 and the pressing case 74 are combined to form the pressing portion 73, and then the pressing portion 73 is set in the storage portion 47 of the adjustment block 72 as shown in FIG. 4. In a state where the pressing portion 73 is held in the storage portion 47 of the adjustment block 72, the engaging pin 27 is inserted through the through hole 28 of the protrusion 72b, the long hole 68 of the shaft 75a, and the through hole 28 of the protrusion 72c, thereby integrating the pressing portion 73 and the adjustment block 72.

[0029] Next, a description will be given of a method for adjusting the length of the strap 100 with reference to FIG. 7 to FIG. 10.

[0030] As shown in FIG. 7, the bottom surface of the storage portion 74a is pressed down by the restoring force of the two springs 26 and the pressing portion 73 presses the engaging pin 27 fitted in the groove 78 of the bottom surface 65 (refer to FIG. 6). As shown in FIG. 8, when the clasp 35 is deployed, the adjustment block 72 does not stand up and is stored inside the cover member 30.

[0031] Specifically, the springs 26 bias the case 75 and the pressing case 74 in a direction away from each other, such that the second surfaces 66 of the pressing case 74 press the first surfaces 76 of the protrusions 72b and 72c of the adjustment block 72. This is because the end of the adjustment block 72 on the joining block 11 side is pressed against the cover member 30 side according to the principle of leverage. That is, the second surfaces 66 of the pressing case 74, the first surfaces 76 of the adjustment block 72, and the related mechanism function as a mechanism for preventing standing up.

[0032] As shown in FIG. 9, when adjusting the length of the strap 100, the first strap 10 is pulled downward of the cover member 30 in the deployed state. When the pulling force exceeds the pressing from the pressing portion 73, the tips of the protrusions 72b and 72c of the adjustment block 72 pry and push up the second surfaces 66 of the pressing case 74, such that the adjustment block 72 stands up.

[0033] When the adjustment block 72 is pushed toward the cover member 30 side in a state where the adjustment block 72 is standing up, the two springs 26 inside the pressing portion 73 are compressed and the engaging pin 27 is released from the groove 29 and enters a slidable state, as shown in FIG. 10.

[0034] In a state where the adjustment block 72 is pushed in, when the engaging pin 27 is moved up to the groove 29 at a position at a desired length from among the four grooves 29 to release the adjustment block 72, the engaging pin 27 fits with that groove 29. In other words, when adjusting the length of the strap 100, the adjustment block 72 is made to stand up with the clasp 35 in a deployed state and pushed toward the cover member 30 side.

[0035] In the present embodiment, the case 75 is formed of resin. In a preferred example, polyacetal resin (POM) is used. Without being limited to polyacetal resin, any resin with good sliding properties may be used, for example, MC nylon, ultra-high molecular weight polyethylene, Teflon (registered trademark) resin, or the like.

[0036] Next, a description will be given of the configuration of the inside of the cover member 30 in the clasp 35 with reference to FIG. 11.

[0037] As shown in FIG. 11, the case 75 is arranged inside the cover member 30. A colored resin is used for the case 75. The end surface of the shaft 75a of the case 75 is exposed at the center of the inside of the cover member 30. For example, when a red resin is used for the case 75, it is possible to decorate the inside of the cover member 30 with a red accent in an oval shape. The color tone may be selected as appropriate according to the design without being limited to red.

[0038] In addition, the rails 20 and 21 are exposed and arranged on the back surface side of the cover member 30. The rails 20 and 21 are provided with scale marks 200 that indicate the positions where the plurality of the grooves 29 engage with the engaging pin 27 (refer to FIG. 3). The pressing case 74 arranged inside the rails 20 and 21 is provided with indicators 300 that indicate the scale marks 200. A description will be given of specific examples of the scale marks 200 and the indicators 300.

[0039] As shown in FIG. 11, the clasp 35 has the cover member 30, an engaged portion, and a moving member. The engaged portion is arranged on the back surface side of the cover member 30 and is arranged at a fixed position with respect to the cover member 30. The engaged portion is, for example, a groove 29 provided in the rails 20 and 21.

[0040] The moving member is joined to the first strap 10 and is provided so as to be movable with respect to the cover member 30. The moving member is formed of the pressing portion 73 and the adjustment block 72 as a joining portion. In addition, the moving member also has the engaging pin 27 as an engaging portion. The engaging pin 27 is configured to selectively engage with any one of a plurality of the grooves 29.

[0041] As shown in FIG. 11, in a plan view seen from the back surface side of the cover member 30, the clasp 35 is provided with the scale marks 200 that indicate the positions where the plurality of grooves 29 engage with the engaging pin 27 (refer to FIG. 3). Specifically, the clasp 35 is arranged on the back surface side of the cover member 30 and has the rails 20 and 21 arranged along the longitudinal direction of the cover member 30. The scale marks 200 are formed on the rails 20 and 21.

[0042] The scale marks 200 include any of lines, marks, and numbers. The scale marks 200 in the present embodiment are lines. In addition, the scale marks 200 are provided at four positions corresponding to the grooves 29. The scale marks 200 are not limited to being provided at four positions and are desirably provided in accordance with the number of the grooves 29. The marks include, for example, "circles", "crosses", "triangles", and other shapes. The scale marks 200 are provided, for example, as recesses in the frame. The scale marks 200 may be flat without being limited to recesses.

[0043] The moving member is provided with the indicators 300 that indicate the scale marks 200. Specifically, the indicators 300 are provided on the base portion of the pressing case 74, which is visible from the back surface side of the cover member 30.

[0044] The indicators 300 include either lines or marks, similarly to the scale marks 200. The indicator 300 of the present embodiment is a triangular mark. There are two of the indicators 300, one indicating the scale marks 200 formed on the rail 20 and another indicating the scale marks 200 formed on the rail 21.

[0045] In this manner, the clasp 35 is provided with the scale marks 200 that indicate the positions where the grooves 29 and the engaging pin 27 engage, thus, when the user adjusts the length of the strap 100, it is possible for the user to determine at a glance which position of the grooves 29 the engaging pin 27 is engaged with. Thus, it is possible to easily adjust the length of the strap 100.

[0046] In addition, since the grooves 29 and the scale marks 200 are formed on the same rails 20 and 21, it is possible to eliminate misalignment between the grooves 29 and the scale marks 200. In addition, using lines or symbols for the scale marks makes it possible to carry out the forming by laser processing or the like and to carry out processing relatively easily.

[0047] In addition, since the indicators 300 are provided on the pressing case 74, which is the moving member, it is possible to adjust the indicators 300 and the scale marks 200 in correspondence with each other, which is easy to understand visually. In addition, using lines or symbols for the indicators 300 makes it possible to carry out the forming by laser processing or the like and to carry out processing relatively easily. In addition, it is easy to grasp the indicated positions.

[0048] Next, a description will be given of the configuration of the watch 150 with reference to FIG. 12 to FIG. 17. The same configurations as in FIG. 1 to FIG. 11 are assigned the same numbers.

[0049] As shown in FIG. 12, the watch 150 is provided with the strap 100. The strap 100 has the first strap 10 and the second strap 15. The first strap 10 is attached to one end side of the watch body 1. The second strap 15 is attached to another end side of the watch body 1.

[0050] As shown in FIG. 13, the watch 150 has the first strap 10, the second strap 15, and the clasp 35 that couples the first strap 10 and the second strap 15. As shown in FIG. 14, the watch 150 has the watch body 1, the first strap 10, the second strap 15, and the clasp 35 that couples the first strap 10 and the second strap 15. As shown in FIG. 15, the watch 150 has the watch body 1, the first strap 10, the second strap 15, and the clasp 35 that couples the first strap 10 and the second strap 15.

[0051] As shown in FIG. 16, the watch 150 has the watch body 1, the first strap 10 coupled to the watch body 1, and the clasp 35 coupled to the first strap 10. As shown in FIG. 17, the watch 150 has the watch body 1, the second strap 15 coupled to the watch body 1, and the clasp 35 coupled to the second strap 15.

[0052] Next, a description will be given of the configuration of the strap 100 with reference to FIG. 18A to FIG. 20B. FIG. 18A to FIG. 20B show the clasp 35 in a deployed state.

[0053] As shown in FIG. 18A and FIG. 18B, the strap 100 has the first strap 10, the second strap 15, and the clasp 35 that couples the first strap 10 and the second strap 15. The clasp 35 has the cover member 30, the middle plate 31, and the lower plate 32.

[0054] As shown in FIG. 19A, FIG. 19B, FIG. 20A, and FIG. 20B, the strap 100 has the first strap 10, the second strap 15, and the clasp 35 that couples the first strap 10 and the second strap 15. The clasp 35 has the cover member 30, the middle plate 31, and the lower plate 32.

[0055] Next, a description will be given of the configuration of the clasp 35 with reference to FIG. 21 to FIG. 26.

[0056] As shown in FIG. 21, the clasp 35 has the cover member 30, the pair of the rails 20 and 21 arranged inside the cover member 30, and the pressing case 74 arranged between the rails 20 and 21. The rails 20 and 21 are provided with the scale marks 200. The pressing case 74 is provided with the indicators 300 that indicate the scale marks 200 at the end of the moving member, that is, at the end of the pressing case 74.

[0057] As shown in FIG. 22, the clasp 35 has the cover member 30. As shown in FIG. 23, the clasp 35 has the cover member 30. As shown in FIG. 24, the clasp 35 has the cover member 30. As shown in FIG. 25, the clasp 35 has the cover member 30. As shown in FIG. 26, the clasp 35 has the cover member 30.

[0058] Next, a specific description will be given of configurations of the other scale marks 200 and the other indicators 300 in the clasp 35 with reference to FIG. 27 to FIG. 53.

[0059] As shown in FIG. 27, a clasp 35A has scale marks 200A provided only on one side of the rails 20 and 21. Specifically, the scale marks 200A are provided only on the rail 20. The scale marks 200A are not limited to being provided only on the rail 20 and may be provided only on the rail 21. In addition, the pressing case 74 is provided with the indicator 300 only on the rail 20 side. The inside of the frame of the scale marks 200A may be recessed or flat.

[0060] As shown in FIG. 28, a clasp 35B has scale marks 200B formed by a combination of lines and numbers. For example, the line when the length of the strap 100 is the shortest is combined with the number "1". In addition, as the length of the strap 100 increases, the lines are combined with the numbers "2", "3", and "4". The scale marks 200B are not limited to being provided only on the rail 20 and may be provided only on the rail 21 or on both rails 20 and 21. The inside of the frame of the scale marks 200B may be recessed or flat.

[0061] As shown in FIG. 29, scale marks 200C of a clasp 35C are represented by white outlines. Specifically, the width of the white outlines increases as the length of the strap 100 is adjusted to be longer. The inside of the frame of the scale marks 200C may be recessed or flat.

[0062] As shown in FIG. 30, scale marks 200D of a clasp 35D are represented by numbers of lines. Specifically, the numbers of the lines increase as the length of the strap 100 is adjusted to be longer.

[0063] As shown in FIG. 31, scale marks 200E of a clasp 35E are represented by white outline lengths. Specifically, the length of the lines increases as the length of the strap 100 is adjusted to be longer. The scale marks are not limited to being represented by white outlines and may be represented by black line lengths. The inside of the frame of the scale marks 200E may be recessed or flat.

[0064] A description will be given of examples of scale marks including marks with reference to FIG. 32 to FIG. 39. As shown in FIG. 32, scale marks 200F of a clasp 35F are represented by white outlined dots. Specifically, the size of the dots increases as the length of the strap 100 is adjusted to be longer. The marks are not limited to being white outlined dots and may be represented by black dots. The inside of the frame of the scale marks 200F may be recessed or flat.

[0065] As shown in FIG. 33, scale marks 200G of a clasp 35G are represented by numbers of dots. Specifically, the numbers of the dots increase as the length of the strap 100 is adjusted to be longer. The dots increase in an isosceles triangle shape. In other words, the dots increase radially.

[0066] As shown in FIG. 34, scale marks 200H of a clasp 35H are represented by numbers of dots. Specifically, the numbers of the dots increase as the length of the strap 100 is adjusted to be longer. The dots increase in the shape of right-angled triangles where the base follows the edges of the rails 20 and 21.

[0067] As shown in FIG. 35, scale marks 200I of a clasp 35I are represented by mountain-like wave shapes. Specifically, the numbers of the waves increase as the length of the strap 100 is adjusted to be longer. The crest portions of the waves have a rounded arc shape.

[0068] As shown in FIG. 36, scale marks 200J of a clasp 35J are represented by mountain-like wave shapes. Specifically, the numbers of the waves increase as the length of the strap 100 is adjusted to be longer. The crest portions of the waves have acute angled shapes.

[0069] As shown in FIG. 37, scale marks 200K of a clasp 35K are represented by wave shapes with successive recessed shapes. Specifically, the numbers of the waves increase as the length of the strap 100 is adjusted to be longer.

[0070] As shown in FIG. 38, scale marks 200L of a clasp 35L are represented by bird footprints. Specifically, as the length of the strap 100 is adjusted to be longer, the bird footprints formed alternately on the rails 20 and 21 are indicated by the indicators 300.

[0071] As shown in FIG. 39, scale marks 200M of a clasp 35M are represented by light and dark lines. Specifically, as the length of the strap 100 is adjusted to be longer, the lines become darker. The inside of the frame of the scale marks 200M may be recessed or flat.

[0072] As shown in FIG. 40, scale marks 200N of a clasp 35N are represented by rectangular precious stones. Precious stones of the same size are embedded in four scale marks 200N formed on each of the rails 20 and 21. The scale marks are not limited to being precious stones and may be represented by white outlines or black painted lines.

[0073] As shown in FIG. 41, scale marks 200P of a clasp 35P are represented by diamond-shaped precious stones. Precious stones of the same size are embedded in the four scale marks 200P formed on each of the rails 20 and 21. The scale marks are not limited to being precious stones and may be represented by white outlined diamond-shaped marks or black painted diamond-shaped marks.

[0074] As shown in FIG. 42, scale marks 200Q of a clasp 35Q are represented by circular precious stones. Precious stones of the same size are embedded in the four scale marks 200Q formed on each of the rails 20 and 21. The scale marks are not limited to being precious stones and may be represented by white outlined circular-shaped marks or black painted circular-shaped marks.

[0075] In FIG. 43 to FIG. 52, a description will be given of examples of scale marks including recessed portions and projecting portions. The recessed portions and projecting portions are formed by cutting or the like.

[0076] As shown in FIG. 43 and FIG. 44, scale marks 200R of a clasp 35R are represented by a V-groove shape. In addition, in the same manner, an indicator 300R of the pressing case 74 is also represented by a V-groove shape from the rail 20 side to the rail 21 side. In other words, when the indicator 300R indicates any of the scale marks 200R, the scale marks 200R and the indicator 300R are linearly connected in a V-groove shape. The V-groove is formed, for example, by diamond cutting. By forming the V-groove by diamond cutting, it is possible to make the V-groove shine brightly.

[0077] As shown in FIG. 45 and FIG. 46, scale marks 200S of a clasp 35S are represented by a projecting shape. In addition, in the same manner, an indicator 300S of the pressing case 74 is also represented by a projecting shape from the rail 20 side to the rail 21 side. In other words, when the indicator 300S indicates any of the scale marks 200S, the scale marks 200S and the indicator 300S are linearly connected in a projecting shape.

[0078] As shown in FIG. 47 and FIG. 48, scale marks 200T of a clasp 35T are represented by a recessed shape. In addition, in the same manner, an indicator 300T of the pressing case 74 is also represented by a recessed shape from the rail 20 side to the rail 21 side. In other words, when the indicator 300T indicates any of the scale marks 200T, the scale marks 200T and the indicator 300T are linearly connected in a recessed shape.

[0079] As shown in FIG. 49, scale marks 200U of a clasp 35U are represented by recessed grooves and a planar portion. Specifically, as the length of the strap 100 is adjusted to be longer, the shape of the scale marks 200U becomes a deep recessed groove, a shallow recessed groove, and a planar portion. In addition, alphabetical characters are formed on the cover member 30 to supplement the indication of the scale marks 200U. A indicates the end of the deep recessed groove. B indicates the boundary between the deep recessed groove and the shallow recessed groove. C indicates the end of the shallow recessed groove. D indicates the planar portion. The alphabetical characters do not have to be formed.

[0080] As shown in FIG. 50, scale marks 200V of a clasp 35V are represented by a recessed groove, a planar portion, and a projecting portion. Specifically, as the length of the strap 100 is adjusted to be longer, the shape of the scale marks 200V becomes a recessed groove, a planar portion, and a projecting portion. In addition, alphabetical characters are formed on the cover member 30 to supplement the indication of the scale marks 200V. A indicates the end of the recessed groove. B indicates the boundary between the recessed groove and the planar portion. C indicates the boundary between the planar portion and the projecting portion. D indicates the end of the projecting portion. The alphabetical characters do not have to be formed.

[0081] As shown in FIG. 51 and FIG. 52, scale marks 200W of a clasp 35W are represented by a recessed shape having a slope, specifically, a step shape. Specifically, the highest positions of the slopes function as the scale marks 200W.

[0082] As shown in FIG. 53, scale marks 200X of a clasp 35X are represented by widening lines as the marks. Specifically, the scale marks 200X are in the shape of right-angled triangles divided into thirds. As the length of the strap 100 is adjusted to be longer, the widening of the lines of the scale marks 200X increases. The inside of the frame of the scale marks 200X may be recessed or flat.

[0083] As described above, the strap 100 of the present embodiment is provided with the first strap 10 attached to one end side of the watch body 1, the second strap 15 attached to another end side of the watch body 1, and the clasp 35 coupling the first strap 10 and the second strap 15, in which the clasp 35 is provided with the cover member 30, a plurality of engaged portions arranged on the back surface side of the cover member 30 at a fixed position with respect to the cover member 30, and a moving member that is joined to the first strap 10, that has the engaging pin 27 configured to selectively engage with any of the plurality of engaged portions, and that is movable with respect to the cover member 30, and the clasp 35 is provided with the scale marks 200 that indicate the positions at which the plurality of engaged portions and the engaging pin 27 engage in a plan view seen from the back surface side of the cover member 30.

[0084] According to this configuration, the clasp 35 is provided with the scale marks 200 that indicate the positions where the engaged portion and the engaging pin 27 engage, thus, when the user adjusts the length of the strap 100, it is possible for the user to determine at a glance at which position the engaging pin 27 is engaged with the engaged portion. Thus, it is possible to easily adjust the length of the strap 100.

[0085] In addition, in the strap 100 of the present embodiment, the clasp 35 is arranged on the back surface side of the cover member 30 and has the rails 20 and 21 arranged along the longitudinal direction of the cover member 30, and the plurality of engaged portions and the scale marks 200 may be formed on the rails 20 and 21. According to this configuration, the grooves 29 and the scale marks 200 are formed on the same rails 20 and 21, thus, it is possible to eliminate misalignment between the grooves 29 and the scale marks 200.

[0086] In addition, in the strap 100 of the present embodiment, the scale marks 200 may include any of lines, marks, and numbers. According to this configuration, using lines or marks for the scale marks 200 makes it possible to carry out the forming by laser processing or the like and to carry out processing relatively easily.

[0087] Furthermore, in the strap 100 of the present embodiment, the scale marks 200 may include a recessed portion, that is, a V-groove, a recessed groove, or a projecting portion. According to this configuration, since the scale marks 200 include a recessed portion or a projecting portion, it is possible to see the scale marks 200 as three-dimensional and to improve the aesthetics.

[0088] In addition, in the strap 100 of the present embodiment, the scale marks 200 may be provided at a position corresponding to the end of the moving member. According to this configuration, since the scale marks 200 are provided at positions corresponding to the end of the moving member, for example, it is possible to provide the indication using the end surface of the moving member without providing an indicator or the like at the end of the moving member. Therefore, there is no unnecessary pattern and it is possible to improve the aesthetics.

[0089] In addition, in the strap 100 of the present embodiment, the moving member may be provided with the indicator 300 that indicates the scale marks 200. According to this configuration, since the indicator 300 is provided on the moving member, it is possible to adjust the indicator 300 and the scale marks 200 in correspondence with each other, which is easy to understand visually.

[0090] In addition, in the strap 100 of the present embodiment, the indicator 300 may include either lines or marks. According to this configuration, using lines or marks for the indicator 300 makes it possible to carry out the forming by laser processing or the like and to carry out processing relatively easily. In addition, it is easy to grasp the indicated position.

[0091] Furthermore, in the strap 100 of the present embodiment, the indicator 300 may include a recessed portion or projecting portion, that is, a V-groove, a recessed shape, or a projecting shape. According to this configuration, since a recessed portion or projecting portion is included, it is possible to see the indicator 300 as three-dimensional and to improve the aesthetics. In particular, it is possible to further improve the aesthetics by matching the design with the scale marks 200.

[0092] In addition, in the strap 100 of the present embodiment, the indicator 300 may be provided at the end of the moving member. According to this configuration, since the indicator 300 is provided at the end of the moving member, it is easy to grasp the indicated position. In particular, matching the design with the scale marks 200 makes it possible to further improve the aesthetics.

[0093] In addition, the watch 150 of the present embodiment is provided with the strap 100 described above. According to this configuration, since the strap 100 described above is provided, it is possible to provide the watch 150 for which the length of the strap 100 is easily adjusted.

[0094] Below, a description will be given of a modified example of the above embodiment.

[0095] As described above, the scale marks 200A to 200X are not limited to being provided on the clasps 35A to 35X, that is, fine adjustment clasps, for example, scale marks 200Y may be provided on the cover member 30, as in a clasp 35Y shown in FIG. 54 and FIG. 55. In addition, the indicator 300 is not limited to being provided on the pressing case 74, but the indicator 300 may be provided on the first strap 10. In addition, the length of the strap 100 may be adjusted using a dedicated adjustment tool, as in the clasp 35Y shown in FIG. 54 and FIG. 55.

[0096] A specific description will be given of the clasp 35Y in FIG. 54 and FIG. 55. The same configurations as in the above embodiment are given the same numbers and will not be described. The clasp 35Y couples the first strap 10Y to the second strap 15 not shown here (refer to FIG. 1), and is formed of a cover member 30Y, the middle plate 31, and the lower plate 32.

[0097] The first strap 10Y includes a plurality of the blocks 2 and a joining block 11Y, which couples to the ends of the blocks 2, and is coupled to the cover member 30Y via the joining block 11Y. The joining block 11Y is coupled to the blocks 2 at one end via a coupling pin and is coupled to the cover member 30Y at the other end via a spring bar. The other end of the joining block 11Y is provided with a through hole through which the spring bar passes. The joining block 11Y is provided with a notch through which the end of the spring bar is exposed when the spring bar is passed through the through hole. In the present modification, the joining block 11Y functions as the moving member and the spring bar functions as the engaging portion.

[0098] The cover member 30Y is provided with a plurality of pairs of recessed portions along the longitudinal direction of the first strap 10Y, the recessed portion pairs being located on the inner sides of the opposing side walls of the cover member 30Y and engaging with both ends of the spring bar. The plurality of pairs of recessed portions function as the engaged portions.

[0099] In the present modification, as described above, the back surface of the cover member 30 is provided with the scale marks 200Y. In addition, the joining block 11Y is also provided with the indicators 300. In a state where the spring bar is inserted through the joining block 11Y and both ends of the spring bar are engaged with a pair of recessed portions, the clasp 35Y and the first strap 10Y are in a coupled state. In this state, by inserting a dedicated adjustment tool into the notch of the joining block 11Y and compressing the spring bar, it is possible to remove the first strap 10 from the cover member together with the joining block 11Y. By selecting one pair of recessed portions and engaging the spring bar, it is possible to engage the joining block 11Y and the cover member at the desired position. In this manner, the length of the first strap 10Y is adjusted.

[0100] As described above, the indicators 300 are not limited to being provided in the moving member, specifically, at the end of the pressing case 74 forming the moving member, and the indicators 300 may be omitted. The indicators 300 may not be provided and, in place of the indicators 300, mirror-finishing may be applied only to the end to make the end stand out.

[0101] As described above, the scale marks 200 having unevenness are not limited to the depth and height shown in the diagrams, and may be changed to a desired depth and height.

Claims

1. A strap comprising: a first strap attached to one end side of a watch body; a second strap attached to another end side of the watch body; and a clasp coupling the first strap and the second strap, wherein the clasp is provided with a cover member, a plurality of engaged portions arranged on a back surface side of the cover member at a fixed position with respect to the cover member, and a moving member that is joined to the first strap, that has an engaging portion configured to selectively engage with any of the plurality of engaged portions, and that is movable with respect to the cover member, and the clasp is provided with a scale mark that indicates a position where the plurality of engaged portions and the engaging portion engage in a plan view seen from the back surface side of the cover member.

2. The strap according to claim 1, wherein the clasp has a rail arranged on the back surface side of the cover member and arranged along a longitudinal direction of the cover member, and the plurality of engaged portions and the scale mark are formed on the rail.

3. The strap according to claim 1, wherein the scale mark includes any one of a line, a mark, and a number.

4. The strap according to claim 1, wherein the scale mark includes a recessed portion or a projecting portion.

5. The strap according to claim 1, wherein the scale mark is provided at a position corresponding to an end of the moving member.

6. The strap according to claim 1, wherein the moving member is provided with an indicator that indicates the scale mark.

7. The strap according to claim 6, wherein the indicator includes any one of a line and a mark.

8. The strap according to claim 6, wherein the indicator includes a recessed portion or a projecting portion.

9. The strap according to claim 6, wherein the indicator is provided at an end of the moving member.

10. A watch comprising: the strap according to claim 1.

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