JP4589745B2 - Watch band buckle structure - Google Patents

Description

  The present invention relates to a watch band buckle structure for connecting one band and the other band.

  Conventionally, portable watches such as wristwatches are broadly divided into watch bands that are generally made of metal, leather belts using leather materials, and synthetic resin belts using synthetic resin materials. The In order to connect the bands attached to the 12 o'clock side and the 6 o'clock side of the watch body, in the former metal band, a connecting tool called Nakadome is used, and the latter leather belt type band or In the synthetic resin belt type band, a connecting tool called buckle is often used to connect the band. The present invention belongs to the leather belt type band or the synthetic resin belt type band using the latter buckle.

  FIG. 13 is a perspective view showing a state in which a buckle-side band and the other band are fastened by a timepiece band 30 having a conventional buckle. As a component configuration, a buckle frame 31 and a projecting bar 33 connected to the tip of the band 32 by a spring bar 38, and the other band inserted into the buckle frame 31 and locked to the engagement hole 35a. It is made up of 35.

  The band 32 has a through hole at its tip and a notch perpendicular to the through hole, a projecting rod 33 having a through hole at the base is disposed in the notch, a spring bar 38 is inserted into the through hole, Both ends of the spring bar 38 are inserted into spring bar fixing holes 37 formed at both ends of the buckle frame 31 and are pivoted to fix the position with the buckle frame 31. The buckle frame 31, the band 32, and the projecting bar 33 are rotatably attached around a spring bar 38.

  The other band 35 is formed with a plurality of engaging holes 35a for engaging with the projecting rod 33 in the longitudinal direction of the band, and the desired position where the engaging hole 35a and the projecting rod 33 coincide with each other. By inserting the protruding rod 33 into the engagement hole 35a and engaging both the buckle frame 31 and the other band 35, and inserting and fixing the tip of the other band 35 to the fixed insertion wheel 39, the buckle The band 32 on the frame 31 side and the other band 35 are connected and fixed.

  In addition, as an example of a watch band provided with a rotating roller in a buckle frame, a structure described in Japanese Utility Model Laid-Open No. 55-59914 is disclosed.

Japanese Utility Model Publication No. 55-59914

  An outline of a watch band buckle structure formed with the structure disclosed in Patent Document 1 will be described with reference to FIGS. 14 to 16. FIG. 14 is a perspective view of a buckle structure 40 provided with a rotating roller 34. 15 is a cross-sectional view showing a state in which the other band 35 is fastened to the buckle frame 31 of FIG. FIG. 16 is a top view of FIG. The buckle structure 40 includes a band 32, a buckle frame 31, a projecting bar 33 for engaging with the other band 35, a spring bar 38 for connecting the buckle frame 31, the band 32 and the projecting bar 33, and a rotating roller. 34 and a rotating roller spring rod 36 for pivoting the rotating roller 34.

The buckle frame 31 and the projecting bar 33 are rotatably attached to a through hole provided at the tip of the band 32 by a spring bar 38. The rotating roller 34 has a cylindrical shape, a through hole is provided at the center, a rotating roller spring rod 36 is inserted into the through hole, and is pivoted on both sides of the front part of the buckle frame 31 to rotate the rotating roller 34. The roller 34 has a structure that rotates back and forth around an axis. In this device, when the band is fastened, it can be smoothly mounted by the rotating action of the rotating roller. In particular, the leather band is used to prevent damage to the band having irregularities on the surface.

  As shown in FIGS. 14 to 16, the buckle structure 40 provided with the rotating roller of Patent Document 1 taken up in the conventional example has the rotating roller 34 on the lower surface of the buckle frame front portion 31a, and the tip of the projecting rod at the time of band fastening The portion 33a has a structure that fits over the buckle frame front portion 31a. Accordingly, the protruding rod 33 protrudes above the buckle frame front portion 31a. This is because the protruding rod 33 protrudes and is often caught on clothes, objects, or the human body, and may damage the clothes, the human body, and the like.

  Further, as shown in the cross-sectional view of FIG. 15, the other band 35 at the time of fastening the band is received and supported by the rotating roller 34 from the structure, and the protruding rod 33 located further away is inserted into the engagement hole 35a. The other band 35 is engaged in a greatly curved shape. The load of tightening the other band 35 is applied to the engagement hole 35a by the fact that the place where the band is received and supported is separated, and the other band 35 is mounted with a large curvature. 35 is deformed, resulting in faster damage to the band.

  In addition, the band tightening is usually tightened in a somewhat relaxed state by the band fastening, but the projecting rod 33 in this state is the other of the operations of wearing a portable watch in daily life. As the band 35 slides, the projecting rod 33 is moved up and down repeatedly from the projecting rod storage portion 31b. When this state continues, there is a problem that the clothes, objects, or the human body are caught and the clothes, the human body, etc. are sometimes damaged.

  In addition, in the conventional band, a protruding rod storage part 31b is provided on the buckle frame front part 31a, the buckle frame front part 31a is narrowed, and it is difficult to provide a logo or mark using the buckle frame 31a on the entire surface. However, there was a problem that the buckle frame 31 structure was difficult to emphasize the logo or mark.

  The object of the present invention is to solve the above-mentioned problems, and it is easy to fasten the band, prevents damage to the band, and damages clothes, objects, or the human body by the projecting rod for fastening the band. Furthermore, the design and function are further integrated to provide a watch band buckle structure that does not impair the appearance quality.

The present invention has been made to solve the conventional problems as described above, and further to achieve the object of the present invention. The watch band buckle structure according to claim 1 of the present invention comprises a watch band. used for in buckle, the buckle structure with rotating rollers該尾lock frame, tappet said the rotating rollers provided with circumferential grooves, fastening the band is accommodated in the circumferential groove when the band fastening, the circumferential The inner wall that forms the groove or the side wall that forms the tip of the protruding rod is provided with at least one of an engaging portion or a locking portion for engaging both .

Next, the timepiece band buckle structure according to claim 2 of the present invention is a buckle used for a timepiece band, and in the buckle structure provided with a rotation roller in the buckle frame, the rotation roller is provided at the front part of the buckle frame. The rotating roller is provided with a circumferential groove on the lower surface, a notch is provided on the inner side of the front part of the buckle frame at a position communicating with the circumferential groove. At least one of an engaging portion or a locking portion for engaging both is provided on the inner wall that forms the circumferential groove or the side wall that forms the tip of the protruding rod. It is characterized by.

Next, in the watch band buckle structure according to claim 3 of the present invention, the projecting rod when the band is fastened is housed in a circumferential groove of the rotating roller, and the projecting rod tip is located at the front portion of the buckle frame. It is characterized by a structure that does not ride.

  Next, in the watch band buckle structure according to claim 4 of the present invention, the circumferential groove formed on the rotating roller has a concave groove shape, a chamfered shape, an R chamfered shape, a tapered shape, V It consists of at least one of groove shape or R groove shape.

Next, in the watch band buckle structure according to claim 5 of the present invention, the shape of the engaging portion is such that at least one of a protruding portion, a groove portion, or a flat portion is formed on the side wall forming the tip end portion of the protruding rod. And is engaged with the circumferential groove.

Next, in the watch band buckle structure according to claim 6 of the present invention, the shape of the locking portion is at least a circumferential convex portion, a circumferential concave portion or a plane portion on the inner wall forming the circumferential groove. One is formed, and the tip of the protruding rod is locked.

As described above, according to the timepiece band buckle structure 10 of the present invention, the effect of claim 1 is that in the buckle structure 10 in which the buckle frame 11 includes the rotation roller 14, the rotation roller 14 is provided with the circumferential groove 14 a, and the band The projecting rod 13 at the time of fastening is housed in the circumferential groove 14a, and the projecting rod tip 13a is located below the buckle frame front portion 11a and does not project above the buckle frame 11 so that clothes, objects, human bodies, etc. It is less likely to be caught on clothes, and has the effect of hardly damaging clothing, the human body, and the like. Furthermore, the tip end portion 13a of the projecting rod should be housed in the circumferential groove 14a and the position thereof should be stable, and there should be no problems such as misalignment even after mounting. In addition, when the portable watch is worn on the wrist (wrist), the rotational action of the rotating roller 14 reduces the resistance when contacting the other band 15 so that the band can be worn smoothly and daily. In daily life, repeated removal of the portable watch has the effect of reducing damage to the leather band surface, which is considered to be particularly weak. Further, the present invention is characterized in that at least one engaging portion 13b or locking portion 14b for engaging both the circumferential groove 14a and the protruding rod tip portion 13a is provided. This is to prevent the protrusion 13a from protruding due to loosening of the band when wearing a portable watch in daily life, especially when the band is tightened in a somewhat relaxed state. The other band 15 slides to follow, and the projecting rod 13 repeats the projecting motion so that it is lifted upward from the buckle frame 11. If this state occurs frequently, it will be caught on clothing, objects, or the human body, and the clothing, human body, etc. will be damaged. The present invention has a structure for preventing such a state, and by providing an engaging portion or a locking portion, the tip end portion 13a of the protruding rod is accommodated in the state of being engaged with the circumferential groove 14a, and can be easily There is an effect that the protruding rod 13 does not protrude.

The effect of claim 2 of the present invention is that the rotating roller 14 is disposed on the lower surface side of the buckle frame front portion 11a, the circumferential groove 14a is provided in the rotating roller, and the circumferential shape is formed inside the buckle frame front portion 11a. A notch 11b is provided at a position communicating with the groove, and the protruding rod 13 at the time of band fastening is accommodated in the circumferential groove 14a, so that the rotating roller 14 is hidden behind the buckle frame front portion 11a and the rotating roller 14 is It has the same appearance as a buckle portion of a normal watch band that is not provided, and has an appearance effect that cannot be seen from a buckle frame provided with a rotating roller. Further, the tip end portion 13a is below the buckle frame front portion 11a and does not protrude above the buckle frame, so that it is less likely to get caught on clothing, objects, or the human body, and is less likely to damage the clothing, human body, etc. effective. Furthermore, the tip end portion 13a of the projecting rod is housed in the circumferential groove 14a so that the position thereof is stable, and there is no problem of misalignment after the mounting. Also, when the portable watch is mounted on the wrist (wrist), the rotating roller 14 Due to the rotating action of the leather band, the resistance to the other band 15 is extremely small, the band can be smoothly attached, and the surface of the leather band, which is considered to be particularly weak by repeated removal of the portable watch in daily life. This has the effect of reducing damage to the etc. Further, the present invention is characterized in that at least one engaging portion 13b or locking portion 14b for engaging both the circumferential groove 14a and the protruding rod tip portion 13a is provided. This is to prevent the protrusion 13a from protruding due to loosening of the band when wearing a portable watch in daily life, especially when the band is tightened in a somewhat relaxed state. The other band 15 slides to follow, and the projecting rod 13 repeats the projecting motion so that it is lifted upward from the buckle frame 11. If this state occurs frequently, it will be caught on clothing, objects, or the human body, and the clothing, human body, etc. will be damaged. The present invention has a structure for preventing such a state, and by providing an engaging portion or a locking portion, the tip end portion 13a of the protruding rod is accommodated in the state of being engaged with the circumferential groove 14a, and can be easily There is an effect that the protruding rod 13 does not protrude.

Claim 3 of the present invention is characterized in that the projecting rod 13 at the time of band fastening is housed in the circumferential groove 14a of the rotating roller 14 so that the projecting rod tip 13a does not get on the buckle frame front portion 11a. In addition, when the band is fastened, the tip end portion 13a of the projecting rod fits in the circumferential groove 14a and is stable, and there is no problem such as misalignment after the mounting. Further, the tip end portion 13a is located below the buckle frame 11a, and does not protrude above the buckle frame, so that it is less likely to get caught on clothes, objects, or the human body, and the clothing, human body, etc. are less likely to be damaged. . Further, as shown in the cross-sectional view of FIG. 2, the other band 15 at the time of fastening the band is received and supported by the rotating roller 14, and further, the projecting rod tip 13a is received by the circumferential groove 14a. The other band 15 can be engaged without being greatly bent. Further, when the band is tightened, the band can be attached without greatly bending the band.

  Claim 4 of the present invention is characterized by the shape of the circumferential groove 14a formed in the rotating roller 14, and is shown in FIG. 7 (A) concave groove shape, (B) chamfered shape, (C). R chamfered shape, (D) taper shape, (E) V groove shape, or (F) R groove shape, etc. are all shapes, but by forming any of these shapes, the tip end portion 13a of the projecting rod at the time of band fastening can be The structure is easy to fit in the groove 14a. Further, the position of the projecting rod 13 after mounting is stable, and there is an effect that the wear and damage to the other band 15 due to misalignment or the like is extremely small.

Claim 5 of the present invention is the structure of the engaging portions 13b and 13c, and is characterized in that a protruding portion 13b or a groove portion 13c is provided on the side wall of the protruding rod tip portion 13a as shown in FIG. 9 or FIG. Then, depending on the structure of the locking portions 14b and 14c formed in the circumferential groove to be engaged, at least one of the protrusion 13b, the groove 13c, or the flat surface shaped to match the locking portion is selected. By forming, there exists an effect which can adjust the engagement degree when both an engaging part and a latching | locking part engage.

Claim 6 of the present invention has the structure of the locking portions 14b and 14c, and is provided with a circumferential convex portion 14b or a circumferential concave portion 14c on the inner wall of the circumferential groove 14a as shown in FIG. 11 or FIG. According to the structure of the engaging portions 13b and 13c of the engaging rod tip portion 13a to be engaged, the circumferential convex portion 14b, the circumferential concave portion 14c having a shape matched to the engaging portion, or the plane portion By selecting and forming at least one, there is an effect that the degree of engagement when both the engaging portion and the engaging portion are engaged can be adjusted.

  As a further effect of the present invention, this watch band buckle structure has a structure that can be produced by conventional technology and equipment, and can be manufactured by a method that can be mass-produced. There is an effect that a band can be provided.

  Examples of the present invention will be described in detail below.

  A buckle structure 10 having a rotating roller according to claim 1 of the present invention will be described as Example 1 with reference to FIGS. 1 to 3. FIG. 1 is a perspective view showing a buckle structure 10 provided with a rotating roller 14 of the present invention. 2 is a cross-sectional view showing a state in which the other band 15 is fastened to the buckle frame 11 of FIG. FIG. 3 is a top view of FIG. As a basic configuration, a buckle frame 11 and a projecting bar 13 attached to the tip of the band 12 via a spring bar 18, a rotary roller 14 attached to the buckle frame 11 via a rotary roller spring bar 16, The other band 15 is engaged with the protruding rod 13.

  The band 12 has a through hole at its tip and a notch perpendicular to the through hole, a projecting rod 13 having a through hole at the base is disposed in the notch, and a spring rod 18 is inserted into the through hole. Both ends of the spring bar 18 are inserted into the spring bar fixing holes 17 formed at both ends of the buckle frame 11 and are pivoted to fix the position with the buckle frame 11. The buckle frame 11, the band 12, and the projecting rod 13 are rotatably attached around a spring rod 18.

  The rotation roller 14 has a through hole in the center thereof, the rotation roller spring rod 16 is inserted into the through hole, and both ends of the rotation roller spring rod 16 are inserted into the rotation roller fixing hole 11C provided in the buckle frame 11, Mount it. The rotating roller 14 rotates smoothly back and forth around the rotating roller spring bar 16. In addition, a rotation roller 14 is attached to the buckle frame 11, and the protruding rod tip 13 a is configured to fit in a circumferential groove 14 a of the rotation roller 14.

  The rotating roller 14 is formed by cutting a through-hole processing, a shape processing, and a cutting in the order of a shape designated by an NC automatic lathe using a bar material such as a brass material or an aluminum material by a program. The cutting tool is generally performed with a cutting tool to which a tungsten chip, which is a carbide tool, is attached. When the surface state of the rotating roller 14 is mirror-finished, it is performed with a cutting tool with a diamond chip. When processed with a diamond tip bite, each surface of the formed rotating roller 14 can be made into a mirror-like surface, and as a result, the rotation is smooth and the resistance when tightening the other band 15 when mounting the band is reduced. A part that can be further reduced is formed.

  In the cutting process, a circumferential groove 14 a is formed in the rotating roller 14. FIG. 7 shows a typical shape of the groove of the circumferential groove 14a. (A) Concave groove shape, (B) Chamfered shape, (C) R chamfered shape, (D) Tapered shape, (E) V groove shape or (F) R groove shape, etc. As a result, the tip end portion 13a of the projecting rod when the band is fastened can be easily accommodated in the circumferential groove 14a, and is formed in order to suppress positional deviation during mounting.

  The rotating roller 14 formed by the cutting process is precious metal-like surface treatment according to the specification specified by the wet plating method, and the entire surface is coated with a metal decorative film, so that the rotating roller 14 is resistant to rust and has corrosion resistance. Formed to maintain smooth rotation.

Next, a method for mounting a portable timepiece having a buckle structure according to the present invention on an arm will be described. First, the portable watch is placed on the arm, the projecting rod 13 is raised with respect to the buckle frame 11, and is inserted from the lower side into the U-shaped buckle frame 11 at the tip of the other band 15. . Further, the tip of the other band 15 that protrudes above the inside of the buckle frame 11 is pulled up. At this time, the surface side of the other band 15 comes into contact with the rotating roller 14, and the rotating roller 14 smoothly rolls forward to the buckle frame front part 11 a side (forward) in response to the pulling, and the rotating roller 14 rotates. Thus, it is possible to pull up the other band 15 with a slight force and tighten the band. This can be said to be an effective structure for a portable watch band used by a weak person, an elderly person, a woman, or a child.

  The other band 15 that has been pulled up has a plurality of engagement holes 15a formed in the longitudinal direction of the band for engaging with the projecting rod 13, so that the other band 15 can be lifted to an appropriate degree of tightening. In this state, at a desired position where the engaging hole 15a and the protruding rod 13 coincide with each other, the protruding rod 13 is tilted forward and inserted into the engaging hole 15a. Further, by tilting the tip of the other band 15 toward the band 12, the projecting rod 13 is tilted forward on the buckle frame front portion 11a side with the spring bar 18 as an axis, and the projecting rod tip 13a is rotated by the rotating roller 14. It fits in the circumferential groove 14a formed in the. Both the band 12 on the buckle frame 11 side and the other band 15 are connected and fixed, and the portable watch is attached to the arm (wrist).

  When the portable timepiece is mounted, the protruding rod 13 is housed in the circumferential groove 14a of the rotating roller 14, and the protruding rod tip 13a is housed in the circumferential groove 14a and is stable, and the position when the portable timepiece is mounted. Wear or damage to the other band 15 due to misalignment or the like is reduced. In addition, since the tip end portion 13a is lower than the buckle frame front portion 11a and does not protrude above the buckle frame, it is less likely to be caught by clothing, objects, or the human body during daily life. It becomes difficult to damage the human body. In addition, when the portable watch is repeatedly attached and detached, the surface of the leather band, which is considered to be particularly weak, has a concavo-convex pattern, and the leather band surface is less damaged.

  Next, an embodiment of the buckle structure 20 including the rotating roller according to claim 2 of the present invention will be described as Example 2 with reference to FIGS. 4 to 6. FIG. 4 is a perspective view showing a buckle structure 20 provided with a rotating roller of the present invention. FIG. 5 is a cross-sectional view showing a state in which the other band 15 is fastened to FIG. 6 shows a top view of FIG. The parts configuration, assembly method, rotation roller formation method and buckle frame attachment method, portable watch mounting method on the wrist (wrist), and the like are the same as those described in the first embodiment.

  4 to FIG. 6, the rotation roller 14 is located on the lower surface of the buckle frame front portion 11a, and the rotation roller 14 is provided with a circumferential groove 14a, and the inside of the buckle frame front portion 11a. A notch 11b is formed at a position communicating with the circumferential groove 14a (directly above the circumferential groove 14a). When the band is fastened, the engaged projecting rod 13 and the projecting rod tip 13a are connected to the circumferential groove 14a. The structure will fit.

  When the band is fastened, the rotation roller 14 is on the lower surface of the buckle frame front portion 11a, and when viewed from above, the rotation roller 14 is in a position that cannot be seen behind the buckle frame front portion 11a and does not have a rotation roller. The appearance is similar to the buckle structure of the watch band. It forms a buckle structure for a watch band with a buckle frame that combines an external effect that cannot be seen from a buckle frame with a rotating roller and a function that is effective for use by a weak person.

  Further, the second embodiment has the same function as that of the first embodiment. When the portable watch is mounted on the arm (wrist), the projecting rod 13 is accommodated in the circumferential groove 14a of the rotating roller 14, and the projecting rod The distal end portion 13a fits in the circumferential groove 14a and is stable, and wear and damage to the other band 15 due to misalignment or the like during wearing of the portable watch is reduced. Further, since the tip end portion 13a is located below the buckle frame front portion 11a and does not protrude above the buckle frame, it is less likely to be caught on clothing, objects, or the human body during daily life. The structure is not damaged. Further, it is characterized in that the structure is such that damage to the surface of the leather band is reduced by providing a concave / convex pattern on the surface side, which is considered to be particularly weak, by repeatedly attaching and detaching the portable watch.

Next, description will be made based on FIGS . 9 to 12 and the first embodiment or the second embodiment. FIG. 9 is a partial perspective view of the buckle frame 11, showing a state in which a protrusion 13 b is formed on the side wall of the tip end portion 13 a and a circumferential recess 14 c is formed on the inner wall of the circumferential groove 14 a of the rotating roller 14. FIG. 10 is a partial perspective view in which a groove 13c is formed on the side wall of the tip end portion 13a. FIG. 11 is a partial cross-sectional view of the circumferential groove 14a portion of the rotating roller 14 and shows a state in which the circumferential convex portion 14b is formed on the inner wall of the circumferential groove 14a. FIG. 12 shows a partial cross-sectional view in which a circumferential recess 14 c is formed on the inner wall of the circumferential groove 14 a of the rotating roller 14.

The structural features shown in the drawings include at least one engaging portion 13b or locking portion 14b for engaging both the circumferential groove 14a and the protruding rod tip 13a. When worn on the wrist (wrist) of a portable watch, the band is usually tightened in a somewhat relaxed state. The rod 13 tends to protrude outward. If this state occurs frequently, it will be caught on clothing, objects, or the human body, and the clothing, human body, etc. will be damaged. This structure is for preventing such a state, and by providing an engaging portion 13b or a locking portion 14b in the circumferential groove 14a and the protruding rod tip portion 13a, the protruding rod tip portion is provided. 13a is accommodated in the state engaged with the circumferential groove 14a, and the protruding rod 13 does not easily protrude.

  When the other band 15 is fastened to the buckle frame 11 side when worn on the wrist (wrist) of a portable watch, the tip end portion 13a of the projecting rod fits into the circumferential groove 14a formed in the rotating roller 14, The protrusion 13b formed on the side wall of the rod tip portion 13a is engaged with and accommodated at a location where the inner wall of the circumferential groove 14a is provided with the circumferential projection 14b, the circumferential recess 14c, or one of the planes.

  The projecting rod 13 and the circumferential groove 14a in the engaged state are followed by the projecting rod as the other band 15 slides during mounting on the arm (wrist) of a portable watch. Although the movement which pushes up 13 arises, both hold | maintain engagement and maintain the state which does not remove | inadvertently. Accordingly, the protruding rod 13 does not protrude.

  When removing the portable watch, the end of the other band 15 is pulled up, and the protrusion 13 is pulled upward while the protrusion 13 is inserted into the engagement hole 15a of the other band 15, The engaged projecting rod tip 13a is easily removed from the circumferential groove 14a, and when further raised, the projecting rod tip 13a is removed from the engagement hole 15a, and the projecting rod 13 is detached and opened. The band 12 on the buckle side and the other band 15 are fastened easily.

Example 1, the bands in Example 2, a typical leather band has been described as an example, even in the synthetic resin belt band using a synthetic resin material, a similar function is exhibited, also, for watches The same effect can be achieved not only in the band but also in a decorative band having a buckle used for clothes and the like.

It is a perspective view of the timepiece band buckle frame which concerns on this invention. It is sectional drawing of the state in which the band was fastened by FIG. FIG. 2 is a top view of FIG. 1. 6 is a perspective view of a watch band buckle frame of Embodiment 2. FIG. FIG. 5 is a cross-sectional view of a state in which the band is fastened to FIG. 4. FIG. 5 is a top view of FIG. 4. Indicates the shape of the circumferential groove of the rotating roller, (A) concave groove shape, (B) chamfered shape, (C) R chamfered shape, (D) tapered shape, (E) V groove shape, (F) R groove FIG. It is a top view which has a logo or a mark in the buckle frame front part. In the partial perspective view of the buckle frame part, a protrusion is formed at the tip of the protrusion and a circumferential recess is formed in the circumferential groove. In the partial perspective view of the buckle frame, a groove is formed at the tip of the tip. It is the fragmentary sectional view which formed the circumferential convex part in the circumferential groove | channel of a rotating roller. It is the fragmentary sectional view which formed the circumferential recessed part in the circumferential groove | channel of a rotating roller. It is a perspective view of the conventional wristwatch band. It is a perspective view of the band for timepieces with a rotation roller of a prior art example. It is sectional drawing of the state by which the band was fastened by FIG. FIG. 15 is a top view of FIG. 14.

Explanation of symbols

10 ······································································································································ ............... Roller fixing holes 12, 32 ... Band (Buckle mounting side)
13, 33 ... Projection rod 13a, 33a ... Projection rod tip 13b ... Projection 13c ... Groove 14, 34 ... Rotating roller 14a ... Peripheral groove 14b ... Peripheral convex part 14c ... Peripheral concave part 15, 35 ... The other band 15a, 35a ... Engagement holes 16, 36 ... Rotating roller spring bar 17, 37 ... Spring bar fixing hole 18, 38 ... Spring bar (for buckle frame, projecting bar, band shaft)
19 …………………………………………………………………………………………………… The buckle structure 30 of the present invention (Claim 2) ............. Conventional band 31b for watches. Tip rod storage 39 39 ························································································ Conventional buckle structure with rotating roller

Claims (6)

A buckle used for a watch band. In a buckle structure having a rotating roller in the buckle frame, a circumferential groove is provided in the rotating roller, and a projecting rod for fastening the band is stored in the circumferential groove when the band is fastened. The inner wall forming the circumferential groove or the side wall forming the tip of the projecting rod is provided with at least one of an engaging portion or a locking portion for engaging both. Band buckle structure. A buckle for use in a watch band, wherein the buckle structure includes a rotation roller in the buckle frame. The rotation roller is disposed on a lower surface of a front part of the buckle frame, and the rotation roller is provided with a circumferential groove. A notch is provided inside the front portion at a position communicating with the circumferential groove, and the projecting rod at the time of band fastening is housed in the circumferential groove of the rotating roller, and the inner wall or the tip of the projecting rod that forms the circumferential groove the side walls forming a section, for engaging both, watch band buckle structure at least one engaging portion or engagement portion, characterized in that provided. The said protruding rod at the time of band fastening is accommodated in the circumferential groove | channel of the said rotation roller, It was set as the structure where a protruding rod front-end | tip part does not get on the said buckle frame front part. Watch band buckle structure. The circumferential groove formed in the rotating roller has at least one of a concave groove shape, a chamfered shape, an R chamfered shape, a tapered shape, a V groove shape, or an R groove shape. The timepiece band buckle structure according to any one of claims 1 to 3. The shape of the engaging portion, the side walls forming the projecting rod tip, the protrusion, at least one groove or flat portion is formed, according to claim 1, characterized in that it is engaged with the circumferential groove Or the clock band buckle structure of 2. The shape of the locking part is characterized in that at least one of a circumferential convex part, a circumferential concave part or a flat part is formed on the inner wall forming the circumferential groove, and the tip end part of the protruding rod is locked. watch band buckle structure according to claim 1 or 2.

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