Watchband and timepiece

Abstract

A watch band and a timepiece are provided without the need for work to thread an operating lever to a sliding portion. The watch band (3) has a spring bar (6) having a first operating lever (14) linked to a first sliding portion (9) and a second operating lever (15) linked to a second sliding portion (11); a first block (7) having a first portion (18), a second portion (19), a linking portion (21) linking the first and second portions, and first recesses (18a, 19a) in the first and second portions; and a second block (8) disposed between the first and second portions, having a second recess (8a), and having the spring bar disposed within a closed curve (26) formed by the left first recess (18a) and the right first recess (19a) overlapping the second recess when viewed in side view from the axis direction (6b) of the spring bar, the second block being disposed between the first and second operating levers.

Description

TECHNICAL FIELD

[0001] The present application relates to a watchband and a timepiece. BACKGROUND

[0002] A watchband and a watch using a spring bar are disclosed in Patent Literature 1. The spring bar has sliding portions at both ends. The spring applies a force to the sliding portions at both ends to the outside. A lever portion as an operating lever is provided to the sliding portions. An operator can press the lever portions from both sides to contract the spring. A through-hole is formed in a block of the watchband. The spring bar is inserted into the through-hole.

[0003] A pair of holes into which the sliding portions are inserted is formed in a case of the watch. The pair of holes are arranged opposite to each other. The operator contracts the spring by pressing the lever portions from both sides to shorten the entire length of the spring bar. Then, the operator inserts the pair of sliding portions into the pair of holes of the case and releases the lever portions. Thus, the block of the watchband is connected to the case by the spring bar.

[0004] Patent Literature 1: Japanese Patent Application Publication No. 2020-168218

[0005] The spring bar of Patent Literature 1 is formed with an external thread on one of the lever portions. An internal thread is formed on one of the sliding portions. The one of the lever portions is detachable with respect to the one of the sliding portions. When the spring bar is assembled to the watchband, the operator detaches the one of the lever portions from the one of the sliding portions, and inserts the spring bar into the through-hole of the block of the watchband. Then, the operator needs to thread-fix the lever portion to the sliding portion. That is, in assembling the spring bar, one of the two operating levers is fixed by a screw. Since the lever portion is a small component, this configuration makes it difficult to perform the work of mounting the lever portion to the spring bar, and causes problems such as an increase in manufacturing man-hours, a deterioration in yield, and the like. SUMMARY

[0006] A watchband has a spring bar having a first operating lever linked to a first sliding portion and a second operating lever linked to a second sliding portion, a first block having a first portion, a second portion, and a linking portion linking the first portion and the second portion, and a second block disposed between the first portion and the second portion, the first block having a first recess in the first portion and the second portion, the second block having a second recess, the spring bar being disposed within a closed curve formed by overlapping the first recess and the second recess or the second recess and the linking portion when viewed from a side of an axis direction of the spring bar, and the second block being disposed between the first operating lever and the second operating lever.

[0007] A watch has the above-described watchband. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1is a schematic perspective view showing the structure of a watchband and a watch according to the first embodiment.

[0009] Figure 2 is a schematic exploded perspective view showing the structure of a watchband and a watch.

[0010] Figure 3 is a schematic side sectional view showing the structure of a spring rod.

[0011] Figure 4 is a schematic view for explaining an assembling method of a watchband.

[0012] Figure 5 is a schematic view for explaining an assembling method of a watchband.

[0013] Figure 6 is a schematic view for explaining an assembling method of a watchband.

[0014] Figure 7 is a schematic view for explaining an assembling method of a watchband.

[0015] Figure 8 is a schematic view for explaining the shape of a recess.

[0016] Figure 9 is a schematic view for explaining the shape of a recess.

[0017] Figure 10 is a schematic view for explaining the shape of a closed curve.

[0018] Figure 11 is a schematic perspective view showing the structure of a watchband and a watch according to the second embodiment.

[0019] Figure 12 is a schematic exploded perspective view showing the structure of a watchband and a watch.

[0020] Figure 13 is a schematic view for explaining an assembling method of a watchband.

[0021] Figure 14 is a schematic view for explaining an assembling method of a watchband.

[0022] Figure 15 is a schematic view for explaining an assembling method of a watchband.

[0023] Figure 16 is a schematic view for explaining an assembling method of a watchband.

[0024] Figure 17 is a schematic view for explaining an assembling method of a watchband.

[0025] Figure 18 is a schematic view for explaining an assembling method of a watchband.

[0026] Figure 19 is a schematic view for explaining the shape of the recess.

[0027] Figure 20 is a schematic view for explaining the shape of the recess.

[0028] Figure 21 is a schematic view for explaining the shape of the closed curve.

[0029] Figure 22 is a schematic view for explaining the structure and assembling method of the watchband and the watch of the third embodiment.

[0030] Figure 23 is a schematic view for explaining the holding groove of the fourth embodiment.

[0031] Figure 24 is a schematic view for explaining the holding groove.

[0032] Figure 25 is a schematic view for explaining the holding groove.

[0033] Figure 26 is a schematic view for explaining the shape of the closed curve of the fifth embodiment.

[0034] Explanation of Reference Numerals

[0035] 1, 31, 49, 59, 69: watch; 3, 32, 51, 61, 71: watchband; 6: spring bar; 6b: axial direction; 7, 34, 63, 73: first block; 8a, 35a, 64a: second recess; 8b, 35b: second fixing hole as second hole; 8, 35, 53, 64: second block; 9: first sliding portion; 11: second sliding portion; 14: first operation lever; 15: second operation lever; 18a, 36a, 65a: left first recess as first recess and third recess; 18b, 36b: left first fixing hole as first hole; 18, 36, 65, 74: first portion; 19a, 37a, 66a: right first recess as first recess and fourth recess; 19b, 37b: right first fixing hole as first hole; 19, 37, 66, 75: second portion; 22, 39: second contact portion; 23, 41: second angle range; 24, 42: first contact portion; 25, 43: first angle range; 26, 44, 76: closed curve; 27, 45: third contact portion; 28, 46: third angle range; 35e: opening portion; 38: connecting portion; 54: central block as block; 55: left end block as block; 56: right end block as block; 65c: first holding groove; 66c: second holding groove; 72: connecting block. DETAILED DESCRIPTION

[0036] First Embodiment

[0037] In the present embodiment, characteristic examples of a watch band and a watch connected with the watch band are described with reference to the drawings. A watch band and a timepiece according to a first embodiment are described with reference to the drawings. As shown in Figure 1 In the timepiece 1, a watch band 3 is connected with a case 2. The timepiece 1 is a wristwatch.

[0038] In Figure 1 , a movement, a dial, a crystal, a back cover, and the like provided to the case 2 of the timepiece 1 are omitted. A direction from the crystal toward the back cover is set as a back direction 10c. A direction from the back cover toward the crystal is set as a front direction lOd. Figure 1 is a view of the timepiece 1 viewed from the back direction 10c side.

[0039] The watch band 3 has a band block 4, a link block 5, and a spring bar 6. A direction of the 6 o'clock side of an inner dial, which is a direction from the case 2 toward the watch band 3, is set as a 6 o'clock direction 10a. A direction opposite to the 6 o'clock direction 10a is set as a 12 o'clock direction lOb. A plurality of band blocks 4 are linked in the watch band 3 according to the circumference of a wearing arm. In Figure 1 , only one band block 4 is illustrated. The link block 5 is disposed at an end portion of the plurality of band blocks 4. The link block 5 is disposed between the band block 4 and the case 2. The spring bar 6 is a member that connects the link block 5 and the case 2.

[0040] The case 2 has a pair of band mounting portions 2a. The link block 5 is disposed between the pair of band mounting portions 2a. The spring bar 6 connects the pair of band mounting portions 2a and the link block 5.

[0041] Figure 2 is a perspective view of the timepiece 1 viewed from the back direction 10c side. As shown in Figure 2 , the link block 5 has a first block 7 and a second block 8. The spring bar 6 is sandwiched by the first block 7 and the second block 8. A first sliding portion 9 is disposed at one end of the spring bar 6, and a second sliding portion 11 is disposed at the other end of the spring bar 6. Mounting holes 2b are respectively provided to the pair of band mounting portions 2a.

[0042] The first sliding portion 9 and the second sliding portion 11 are respectively inserted into the mounting holes 2b. The spring bar 6 is provided to the band mounting portions 2a in a detachable manner. Therefore, the link block 5 is detachable with respect to the case 2.

[0043] As Figure 3As shown, the spring rod 6 has a tubular pipe portion 12. A spring 13 is arranged in the pipe portion 12. The spring 13 is a coil spring. A first sliding portion 9 and a second sliding portion 11 are arranged in the pipe portion 12 in a manner so as to be slidable along the axis 6a of the spring rod 6. The bidirectional direction along the axis 6a of the spring rod 6 is set as the axial direction 6b of the spring rod 6. The spring 13 is arranged between the first sliding portion 9 and the second sliding portion 11. The spring 13 exerts a force on the first sliding portion 9 and the second sliding portion 11. The first sliding portion 9 and the second sliding portion 11 are pressed outward from both sides of the pipe portion 12 by the spring 13.

[0044] The first sliding portion 9 has a first sliding body 9a of a large diameter and a first protruding portion 9b of a small diameter. The outer shape of the first sliding body 9a is slightly smaller than the inner diameter of the pipe portion 12, and thus the first sliding body 9a slides inside the pipe portion 12. The second sliding portion 11 has a second sliding body 11a of a large diameter and a second protruding portion 11b of a small diameter. The outer shape of the second sliding body 11a is slightly smaller than the inner diameter of the pipe portion 12, and thus the second sliding body 11a slides inside the pipe portion 12.

[0045] A first operation lever 14 is provided on the first sliding body 9a. A second operation lever 15 is provided on the second sliding body 11a. An operator operates the first operation lever 14 to slide the first sliding portion 9. The operator operates the second operation lever 15 to slide the second sliding portion 11. The operator operates the first operation lever 14 and the second operation lever 15 to cause the first protruding portion 9b and the second protruding portion 11b to enter and exit with respect to the pipe portion 12.

[0046] Anti-extraction portions 12a are arranged on both sides of the pipe portion 12. The first sliding portion 9 and the second sliding portion 11 do not come out to the outside of the pipe portion 12 by the anti-extraction portions 12a. The first protruding portion 9b and the second protruding portion 11b protrude from the anti-extraction portions 12a.

[0047] The pipe portion 12 has a first sliding hole 16 on the side of the first sliding portion 9. The first sliding hole 16 is long in the axial direction of the spring rod 6. The first operation lever 14 protrudes from the first sliding hole 16. The pipe portion 12 has a second sliding hole 17 on the side of the second sliding portion 11. The second sliding hole 17 is long in the axial direction of the spring rod 6. The second operation lever 15 protrudes from the second sliding hole 17. The first operation lever 14 and the second operation lever 15 are movable in the axial direction of the spring rod 6. In this way, the spring rod 6 has the first operation lever 14 coupled to the first sliding portion 9 and the second operation lever 15 coupled to the second sliding portion 11.

[0048] Next, the assembly steps of the coupling block 5 and the spring rod 6 will be described. As shown in FIG. 6, the coupling block 5 is placed on the pipe portion 12 of the spring rod 6. The first sliding portion 9 and the second sliding portion 11 are arranged in the pipe portion 12 in a manner so as to be slidable along the axis 6a of the spring rod 6. The first protruding portion 9b and the second protruding portion 11b are arranged in the pipe portion 12 in a manner so as to be slidable along the axis 6a of the spring rod 6. The first operation lever 14 and the second operation lever 15 are arranged in the pipe portion 12 in a manner so as to be slidable along the axis 6a of the spring rod 6. Figure 4As shown, the first block 7 has a first portion 18, a second portion 19, and a connecting portion 21 connecting the first portion 18 and the second portion 19. The first block 7 has a left first recess 18a as a first recess and a third recess in the first portion 18. The first block 7 has a right first recess 19a as a first recess and a fourth recess in the second portion 19. The first block 7 has a left first fixing hole 18b as a first hole in the first portion 18. The first block 7 has a right first fixing hole 19b as a first hole in the second portion 19. The left first fixing hole 18b and the right first fixing hole 19b are coaxial and extend along the axial direction 6b.

[0049] The spring bar 6 is disposed on a first surface 21a of the connecting portion 21 on the front direction 10d side. Also, the spring bar 6 is disposed in the left first recess 18a and the right first recess 19a. As a result, as shown in FIG. 6, the first block 7 and the spring bar 6 are assembled. Figure 5

[0050] As shown in FIG. 7, the second block 8 has a second recess 8a on the back direction 10c side. The second block 8 has a second fixing hole 8b as a second hole and a second connecting hole 8c. The second fixing hole 8b and the second connecting hole 8c extend along the axial direction 6b. The second connecting hole 8c is used when the band block 4 and the connecting block 5 are connected. Figure 5

[0051] The second block 8 is disposed between the first portion 18 and the second portion 19. The spring bar 6 is disposed inside the second recess 8a. The connecting portion 21 covers the second recess 8a. As a result, as shown in FIG. 8, the connecting block 5 is assembled. Figure 6 Figure 7 Figure 6 FIG. 9 is a view of the connecting block 5 as viewed from the front direction 10d. Figure 7 FIG. 10 is a view of the connecting block 5 as viewed from the back direction 10c side. The second block 8 is disposed between the first operation lever 14 and the second operation lever 15.

[0052] The left first fixing hole 18b and the right first fixing hole 19b of the first block 7 and the second fixing hole 8b of the second block 8 are disposed on the same line. A pin not shown is inserted in the left first fixing hole 18b, the second fixing hole 8b, and the right first fixing hole 19b to fix the first block 7 and the second block 8. A C-ring is provided on the pin to prevent the pin from coming out of the connecting block 5.

[0053] ​​​​According to this structure, the pin is inserted into the left first fixing hole 18b, the second fixing hole 8b, and the right first fixing hole 19b to fix the first block 7 and the second block 8, so the first block 7 and the second block 8 can be easily fixed. In addition, laser can be irradiated to the connecting portion 8d where the second block 8 and the connecting portion 21 are connected, and the second block 8 and the connecting portion 21 can be welded.

[0054] Next, the shapes of the left first recess 18a, the right first recess 19a, and the second recess 8a will be described. Figure 8 is a view of the second block 8 as viewed from the axis direction 6b. The second contact portion 22, which contacts the second recess 8a and the spring rod 6, corresponds to an angle, which is the second angle range 23, of 20 degrees or more and 180 degrees or less with the axis 6a of the spring rod 6 as the center. In a case where the second angle range 23 is less than 20 degrees, the positional displacement of the spring rod 6 in the direction intersecting the axis of the spring rod 6 with respect to the second recess 8a is likely to become large. Due to this positional displacement, the outer periphery of the spring rod 6 rubs against the second recess 8a and is likely to be worn, and the spring rod 6 is likely to shake with respect to the connecting block. In addition, in a case where the second angle range 23 is more than 180 degrees, the spring rod 6 cannot be fitted into the second recess 8a from the direction intersecting the axis of the spring rod 6.

[0055] Figure 9 is a view of the first block 7 as viewed from the axis direction 6b. The first contact portion 24, which contacts the left first recess 18a, the right first recess 19a, and the connecting portion 21 and the spring rod 6, corresponds to an angle, which is the first angle range 25, of 20 degrees or more and 180 degrees or less with the axis 6a of the spring rod 6 as the center. In a case where the first angle range 25 is less than 20 degrees, the positional displacement of the spring rod 6 in the direction intersecting the axis of the spring rod 6 with respect to the left first recess 18a and the right first recess 19a is likely to become large. Due to this positional displacement, the outer periphery of the spring rod 6 rubs against the left first recess 18a and the right first recess 19a and is likely to be worn, and the spring rod 6 is likely to shake with respect to the connecting block. In addition, in a case where the first angle range 25 is more than 180 degrees, the spring rod 6 cannot be fitted into the left first recess 18a and the right first recess 19a from the direction intersecting the axis of the spring rod 6.

[0056] Figure 10 is a view of the connecting block 5 as viewed from the axis direction 6b. In a side view as viewed from the axis direction 6b of the spring rod 6, the spring rod 6 is disposed within a closed curve 26 in which the left first recess 18a and the right first recess 19a, the second recess 8a, and the first face 21a of the connecting portion 21 overlap. In addition, in a side view as viewed from the axis direction 6b of the spring rod 6, the spring rod 6 can also be a structure disposed within a closed curve formed by the second recess 8a and the first face 21a of the connecting portion 21.

[0057] According to this structure, the first block 7 and the second block 8 clamp the spring rod 6. In a side view taken from the axial direction 6b of the spring rod 6, the left first recess 18a and the right first recess 19a form a closed curve 26 with the second recess 8a. That is, a hole is formed by the left first recess 18a, the right first recess 19a, and the second recess 8a. The spring rod 6 is disposed in this hole. Therefore, even when the first operating lever 14 and the second operating lever 15 are present on the spring rod 6, the watch strap 3, which includes the spring rod 6 and the connecting block 5, can be easily assembled by clamping the spring rod 6 with the first block 7 and the second block 8. As a result, the operation of threading the operating lever to the sliding part, as in Patent Document 1, can be eliminated.

[0058] The third contact portion 27, which contacts the first left recess 18a, the first right recess 19a, the second recess 8a, and the spring rod 6, corresponds to the angle centered on the axis 6a of the spring rod 6, i.e., the third angle range 28, which is greater than 180 degrees and less than 360 degrees. By making the third angle range 28 greater than 180 degrees, the positional offset of the spring rod 6 in the direction intersecting the axis of the spring rod 6 can be reduced relative to the closed curve 26.

[0059] According to this structure, since the first angle range 25 is less than 180 degrees, the spring rod 6 can be inserted from the opening side into the left first recess 18a and the right first recess 19a. Since the second angle range 23 is less than 180 degrees, the spring rod 6 can be inserted from the opening side into the second recess 8a. Since the third angle range 28 is greater than 180 degrees, the left first recess 18a, the right first recess 19a, and the second recess 8a can easily form a closed curve 26.

[0060] The watch 1 has the watch strap 3 described above. According to this structure, the watch strap 3 allows the spring bar 6 to be easily assembled even when the first operating lever 14 and the second operating lever 15 are present on the spring bar 6. Therefore, the watch 1 can be a watch with a watch strap 3 that allows for easy assembly of the spring bar 6 with the first operating lever 14 and the second operating lever 15.

[0061] Implementation Method 2

[0062] The difference between this embodiment and the first embodiment lies in the structure of the connecting blocks. Furthermore, structures identical to those in the first embodiment are labeled with the same reference numerals, and repeated descriptions are omitted.

[0063] like Figure 11 As shown, in watch 31, the strap 32 is connected to the case 2. Watch 31 is a wristwatch. Figure 11 In this version, the movement, dial, windproof glass, and back cover of the case 2 located in the watch 31 are omitted. Figure 11Fig. 10 is a view of the watch 31 as viewed from the back direction 10c side.

[0064] The band 32 has the band block 4, the link block 33, and the spring bar 6. In Figure 11 only one band block 4 is illustrated in Fig. 10. The link block 33 is provided at an end portion of the plurality of band blocks 4 that are linked. The link block 33 is provided between the band block 4 and the case 2. The spring bar 6 connects the pair of band mounting portions 2a and the link block 33.

[0065] Figure 12 Fig. 11 is a perspective view of the watch 31 as viewed from the back direction 10c side. As Figure 12 indicated in Fig. 11, the link block 33 has a first block 34 and a second block 35. The spring bar 6 is sandwiched by the first block 34 and the second block 35. The spring bar 6 is provided to the band mounting portion 2a in a detachable manner. Therefore, the link block 33 is detachable with respect to the case 2.

[0066] Next, the assembly step of the link block 33 and the spring bar 6 will be described. As Figure 13 indicated in Fig. 12, the first block 34 has a first portion 36, a second portion 37, and a link portion 38 that links the first portion 36 and the second portion 37. The first block 34 has a left side first recess 36a as the first recess and the third recess in the first portion 36. The first block 34 has a right side first recess 37a as the first recess and the fourth recess in the second portion 37. The first block 34 has a left side first fixing hole 36b as the first hole in the first portion 36. The first block 34 has a right side first fixing hole 37b as the first hole in the second portion 37. The left side first fixing hole 36b and the right side first fixing hole 37b are coaxial and extend in the axial direction 6b.

[0067] The spring bar 6 is provided on a second face 38a of the link portion 38 on the 6 o'clock direction 10a side. Further, the spring bar 6 is provided inside the left side first recess 36a and the right side first recess 37a. As a result, as Figure 14 indicated in Fig. 13, the first block 34 and the spring bar 6 are assembled.

[0068] As Figure 14 indicated in Fig. 14, the second block 35 has a second recess 35a on the 12 o'clock direction 10b side. The second block 35 has a second fixing hole 35b as the second hole and a second link hole 35c. The second fixing hole 35b and the second link hole 35c extend in the axial direction 6b. The second link hole 35c is used when linking the band block 4 and the link block 33.

[0069] The second block 35 is provided between the first portion 36 and the second portion 37. The spring bar 6 is provided inside the second recess 35a.

[0070] AsFigure 15 The spring bar 6 and the connecting portion 38 are inserted into the second recess 35a as shown in FIG. 9. As a result, the connecting block 33 is assembled as shown in FIG. 10. Figure 16 、 Figure 17 and Figure 18 The connecting block 33 is assembled as shown in FIG. 10. Figure 16 is a perspective view of the connecting block 33 as viewed from the front direction 10d side. Figure 17 is a perspective view of the connecting block 33 as viewed from the back direction 10c side. Figure 18 is a view of the connecting block 33 as viewed from the axis direction 6b.

[0071] The left first fixing hole 36b of the first block 34, the right first fixing hole 37b, and the second fixing hole 35b of the second block 35 are arranged on the same line. A pin not shown is inserted into the left first fixing hole 36b, the second fixing hole 35b, and the right first fixing hole 37b to fix the first block 34 and the second block 35. A C-ring is provided on the pin to prevent the pin from coming out of the connecting block 33.

[0072] According to this structure, the pin is inserted into the left first fixing hole 36b, the second fixing hole 35b, and the right first fixing hole 37b to fix the first block 34 and the second block 35, so that the first block 34 and the second block 35 can be easily fixed. In addition, laser light can be irradiated to the connecting portion 35d of the second block 35 to which the connecting portion 38 is connected to weld the second block 35 and the connecting portion 38.

[0073] The connecting portion 38 is arranged at the opening portion 35e of the second recess 35a. According to this structure, the relative positions of the first block 34 and the second block 35 are determined because the relative positions of the connecting portion 38 and the second recess 35a are determined. Therefore, the first block 34 and the second block 35 can be easily assembled.

[0074] As shown in FIG. 11, the first operation lever 14 is arranged at the left first recess 36a of the first portion 36. The left first recess 36a restricts the movement of the first operation lever 14 in the rotational direction. The second operation lever 15 is arranged at the right first recess 37a of the second portion 37. The right first recess 37a restricts the movement of the second operation lever 15 in the rotational direction. Figure 17 Figure 18 As shown in FIG. 11, the first operation lever 14 is arranged at the left first recess 36a of the first portion 36. The left first recess 36a restricts the movement of the first operation lever 14 in the rotational direction. The second operation lever 15 is arranged at the right first recess 37a of the second portion 37. The right first recess 37a restricts the movement of the second operation lever 15 in the rotational direction.

[0075] ​According to this structure, the left first recess 36a of the first portion 36 and the right first recess 37a of the second portion 37 are provided with the spring bar 6. The rotational direction movement of the first operation lever 14 is restricted by the left first recess 36a. The first operation lever 14 is prevented from rotating and tilting. The rotational direction movement of the second operation lever 15 is restricted by the right first recess 37a. The second operation lever 15 is prevented from rotating and tilting. At this time, the first operation lever 14 and the second operation lever 15 are easily moved in the axis direction 6b of the spring bar 6, and are difficult to move in the direction intersecting the axis direction 6b. Therefore, the left first recess 36a and the right first recess 37a can facilitate the operation of the first operation lever 14 and the second operation lever 15.

[0076] Next, the shapes of the left first recess 36a, the right first recess 37a, and the second recess 35a will be described. Figure 19 is a view of the second block 35 as viewed from the axis direction 6b. The second angle range 41, which is an angle centered on the axis 6a of the spring bar 6, corresponding to the range of the second contact portion 39 in contact with the second recess 35a and the spring bar 6, is 20 degrees or more and 180 degrees or less. In the case where the second angle range 41 is less than 20 degrees, the positional displacement of the spring bar 6 in the direction intersecting the axis of the spring bar 6 with respect to the second recess 35a is likely to become large. Due to this positional displacement, the outer periphery of the spring bar 6 rubs against the second recess 35a and is worn, and the spring bar 6 is likely to shake with respect to the link block. In addition, in the case where the second angle range 41 is more than 180 degrees, the spring bar 6 cannot be fitted into the second recess 35a from the direction intersecting the axis of the spring bar 6.

[0077] Figure 20 is a view of the first block 34 as viewed from the axis direction 6b. The first angle range 43, which is an angle centered on the axis 6a of the spring bar 6, corresponding to the range of the first contact portion 42 in contact with the left first recess 36a and the right first recess 37a and the spring bar 6, is 20 degrees or more and 180 degrees or less. In the case where the first angle range 43 is less than 20 degrees, the positional displacement of the spring bar 6 in the direction intersecting the axis of the spring bar 6 with respect to the left first recess 36a and the right first recess 37a is likely to become large. Due to this positional displacement, the outer periphery of the spring bar 6 rubs against the left first recess 36a and the right first recess 37a and is worn, and the spring bar 6 is likely to shake with respect to the link block. In addition, in the case where the first angle range 43 is more than 180 degrees, the spring bar 6 cannot be fitted into the left first recess 36a and the right first recess 37a from the direction intersecting the axis of the spring bar 6.

[0078] Figure 21is a view of the link block 33 as viewed from the axial direction 6b. In a side view as viewed from the axial direction 6b of the spring bar 6, the spring bar 6 is disposed within a closed curve 44 formed by the left first recess 36a and the right first recess 37a overlapping the second recess 35a.

[0079] According to this structure, the first block 34 and the second block 35 sandwich the spring bar 6. At this time, in a side view as viewed from the axial direction 6b of the spring bar 6, the left first recess 36a and the right first recess 37a form a closed curve 44 with the second recess 35a. That is, a hole is formed by the left first recess 36a and the right first recess 37a and the second recess 35a. The spring bar 6 is disposed in the hole. Therefore, even if the first operation lever 14 and the second operation lever 15 are present on the spring bar 6, the wristwatch 31 can be easily assembled with the spring bar 6 sandwiched by the first block 34 and the second block 35. As a result, the operation of screwing the operation lever to the slide portion as in Patent Document 1 can be eliminated.

[0080] The third contact portion 45, which corresponds to a range of an angle with the spring bar 6 as a center, that is, a third angle range 46, is an angle range of more than 180 degrees and 360 degrees or less.

[0081] According to this structure, since the first angle range 43 is 180 degrees or less, the spring bar 6 can be inserted into the left first recess 36a and the right first recess 37a from the opening side. Since the second angle range 41 is 180 degrees or less, the spring bar 6 can be inserted into the second recess 35a from the opening portion 35e side. Since the third angle range 46 is more than 180 degrees, the left first recess 36a, the right first recess 37a, and the second recess 35a can easily form the closed curve 44.

[0082] The wristwatch 31 has the wristband 32 described above. According to this structure, the wristband 32 is a wristband in which the spring bar 6 can be easily assembled even if the first operation lever 14 and the second operation lever 15 are present on the spring bar 6. Therefore, the wristwatch 31 can be a wristwatch having the wristband 32 in which the spring bar 6 having the first operation lever 14 and the second operation lever 15 can be easily assembled.

[0083] Third Embodiment

[0084] The present embodiment differs from the second embodiment in that the second block 35 is composed of three components. Further, the same reference numerals are assigned to the same structures as in the second embodiment, and the repeated description is omitted.

[0085] As Figure 22As shown, the watch strap 51 of the clock 49 has a connecting block 52. The connecting block 52 has a first block 34, a spring bar 6, and a second block 53. The shape of the second block 53 is the same as that of the second block 35 in the second embodiment. The second block 53 has a central block 54, a left end block 55, and a right end block 56.

[0086] The central block 54, the left end block 55, and the right end block 56 have the same shape when viewed from the axial direction 6b. The thickness is not particularly limited, but the thickness of the left end block 55 and the right end block 56 is the same in the axial direction 6b, and is thinner than that of the central block 54.

[0087] The second block 53 is composed of multiple blocks arranged in the axial direction 6b of the spring bar 6. Because of this structure, the second block 53, composed of multiple blocks arranged in the axial direction 6b of the spring bar 6, can easily achieve a decorative appearance.

[0088] Implementation Method 4

[0089] The difference between this embodiment and the second embodiment is that it has a groove for holding the operating lever. Furthermore, structures identical to those in the second embodiment are labeled with the same reference numerals, and repeated descriptions are omitted.

[0090] like Figure 23 As shown, the watch strap 61 of the watch 59 has a connecting block 62. The connecting block 62 has a first block 63, a spring bar 6, and a second block 64. The first block 63 has a first portion 65 and a second portion 66. The first portion 65 has a left first recess 65a that serves as a first recess and a third recess. The left first recess 65a corresponds to the left first recess 36a in the second embodiment. The second portion 66 has a right first recess 66a that serves as a first recess and a fourth recess. The right first recess 66a corresponds to the right first recess 37a in the second embodiment. The spring bar 6 is provided in the left first recess 65a and the right first recess 66a.

[0091] A first retaining groove 65c is provided in the first part 65 of the first block 63. The first retaining groove 65c is connected to the first recess 65a on the left side, and the first retaining groove 65c is disposed on the 12 o'clock direction 10b side of the first recess 65a on the left side. The first retaining groove 65c retains the first operating lever 14 in a manner that allows it to engage and disengage.

[0092] A second retaining groove 66c is provided in the second part 66 of the first block 63. The second retaining groove 66c is connected to the first recess 66a on the right side, and the second retaining groove 66c is disposed on the 12 o'clock direction 10b side of the first recess 66a on the right side. The second retaining groove 66c retains the second operating lever 15 in a manner that allows it to engage and disengage.

[0093] The second block 64 has a third retaining groove 64f and a fourth retaining groove 64g. The second block 64 has a second recess 64a corresponding to the second recess 35a in the second embodiment. The third retaining groove 64f and the fourth retaining groove 64g are connected to the second recess 64a and are disposed on the 12 o'clock direction 10b side of the second recess 64a. The third retaining groove 64f is disposed on the first part 65 side. The fourth retaining groove 64g is disposed on the second part 66 side. The third retaining groove 64f retains the first operating lever 14 in a manner that allows for engagement and disengagement. The fourth retaining groove 64g retains the second operating lever 15 in a manner that allows for engagement and disengagement.

[0094] like Figure 24 As shown, when the operator operates the first operating lever 14 and positions it in the first retaining groove 65c, the first protrusion 9b of the first sliding part 9 protrudes beyond the left first recess 65a. When the operator operates the second operating lever 15 and positions it in the second retaining groove 66c, the second protrusion 11b of the second sliding part 11 protrudes beyond the right first recess 66a.

[0095] like Figure 25 As shown, when the operator operates the first operating lever 14 and positions it in the third retaining groove 64f, the first protrusion 9b of the first sliding part 9 is housed in the left first recess 65a. When the operator operates the second operating lever 15 and positions it in the fourth retaining groove 64g, the second protrusion 11b of the second sliding part 11 is housed in the right first recess 66a.

[0096] When the connecting block 62 is installed on the housing 2, the operator inserts the first operating lever 14 into the third retaining groove 64f. The operator then inserts the second operating lever 15 into the fourth retaining groove 64g. Next, the operator positions the connecting block 62 between a pair of watch strap mounting portions 2a. Then, the operator inserts the first operating lever 14 into the first retaining groove 65c. The operator then inserts the second operating lever 15 into the second retaining groove 66c. Thus, the first protrusion 9b and the second protrusion 11b protrude and remain inserted into the mounting hole 2b. Therefore, the connecting block 62 remains connected to the housing 2.

[0097] According to this structure, the position of the first operating lever 14 can be fixed by inserting it into the first retaining groove 65c. The position of the first operating lever 14 can be changed by removing it from the first retaining groove 65c. Therefore, the position of the first operating lever 14 can be easily adjusted. Similarly, since the second operating lever 15 can be inserted into and removed from the second retaining groove 66c, the position of the second operating lever 15 can be easily adjusted.

[0098] Fifth Implementation

[0099] The difference between this embodiment and the second embodiment is that it does not have the left first recess 36a and the right first recess 37a. Furthermore, structures identical to those in the second embodiment are labeled with the same reference numerals, and repeated descriptions are omitted.

[0100] like Figure 26 As shown, the watch strap 71 of the clock 69 has a connecting block 72. The connecting block 72 has a first block 73, a spring bar 6, and a second block 35. The first block 73 has a first part 74 and a second part 75. The first part 74 and the second part 75 are connected by a connecting part 38.

[0101] Part 1 74 does not have the portion corresponding to the left first recess 36a in the second embodiment. The portion of the left first recess 36a on the 6 o'clock direction 10a side of Part 1 74 is removed. Therefore, the portion corresponding to the left first recess 36a is not included in Part 1 74. Part 2 75 does not have the right first recess 37a in the second embodiment. The portion of the right first recess 37a on the 6 o'clock direction 10a side of Part 2 75 is removed. Therefore, the portion corresponding to the right first recess 37a is not included in Part 2 75. The spring rod 6 and the connecting portion 38 are inserted into the second recess 35a. The second surface 38a of the connecting portion 38 and the second recess 35a form a closed curve 76.

[0102] In a side view taken from the axial direction 6b of the spring bar 6, the spring bar 6 is disposed within a closed curve 76 formed by the overlap of the second recess 35a and the connecting portion 38. According to this structure, in a side view taken from the axial direction 6b of the spring bar 6, the second recess 35a and the connecting portion 38 form a closed curve 76. That is, a hole is formed by the second recess 35a and the connecting portion 38. The spring bar 6 is disposed within the hole. Therefore, even when the first operating lever 14 and the second operating lever 15 are present on the spring bar 6, the watch strap 71 with the spring bar 6 can be easily assembled by clamping the spring bar 6 with the first block 73 and the second block 35. As a result, the operation of threading the operating lever to the sliding portion, as in Patent Document 1, can be eliminated.

[0103] Implementation Method 6

[0104] In the first to fifth embodiments, when the block is viewed from the side, the concave portion of the block is configured to include an arc, but it may also be a concave portion consisting only of straight lines without an arc. For example, in cross-section, the concave portion of the block may also be V-shaped.

Claims

1. A watchband, characterized by, The watchband has: a spring bar having a first operation lever connected to the first sliding portion and a second operation lever connected to the second sliding portion; a first block having a first portion, a second portion, and a connecting portion connecting the first portion and the second portion; and a second block disposed between the first portion and the second portion, the first block has a first recess in the first portion and the second portion, the second block has a second recess, when viewed from the side in the direction of the axis of the spring bar, the spring bar is disposed within a closed curve formed by the first recess and the second recess or the second recess and the connecting portion overlapping each other, the second block is disposed between the first operation lever and the second operation lever, a first angle range, which is an angle centered on the axis of the spring bar corresponding to the range of a first contact portion contacting the first recess and the spring bar, is 180 degrees or less, a second angle range, which is an angle centered on the axis of the spring bar corresponding to the range of a second contact portion contacting the second recess and the spring bar, is 180 degrees or less, a third angle range, which is an angle centered on the axis of the spring bar corresponding to the range of a third contact portion contacting the first recess and the second recess and the spring bar, is an angle range greater than 180 degrees.

2. The watchband according to claim 1, wherein the connecting portion is disposed at an opening of the second recess.

3. The watchband according to claim 1 or 2, wherein when the first recess of the first portion is a third recess and the first recess of the second portion is a fourth recess, the first operation lever is disposed in the third recess of the first portion, the third recess restricts movement of the first operation lever in a rotational direction, and the second operation lever is disposed in the fourth recess of the second portion, the fourth recess restricts movement of the second operation lever in a rotational direction.

4. The watchband according to claim 1 or 2, wherein a first hole of the first block and a second hole of the second block are disposed on the same line, and a pin is inserted into the first hole and the second hole to fix the first block and the second block.

5. The watchband according to claim 1 or 2, wherein the second block is composed of a plurality of blocks arranged in the direction of the axis of the spring bar.

6. The watchband according to claim 1 or 2, wherein a first holding groove capable of holding the first operation lever in and out is provided in the first portion of the first block, a second holding groove capable of holding the second operation lever in and out is provided in the second portion of the first block.

7. A timepiece, characterized by The timepiece has the watchband according to any one of claims 1 to 6.

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