JP2014087455A - Band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a band capable of preventing molding defects due to sink marks during molding and improving assembly workability and productivity with a small number of parts.
SOLUTION: In a watch band formed by sequentially connecting a band piece 1 provided with a convex part 3 at one end and a concave part 4 in which the convex part 3 can be arranged at the other end, the band piece 1 is synthesized. It has an upper piece 6 made of resin and a lower piece 7 made of synthetic resin, and the upper piece 6 and the lower piece 7 are formed and joined in a shape with less unevenness in their thicknesses. Therefore, when molding the upper piece 6 and the lower piece 7 with synthetic resin, it is possible to prevent the upper piece 6 and the lower piece 7 from being molded due to sink marks. Since the band piece 1 can be easily and easily formed simply by joining, assembly workability and productivity can be improved with a small number of parts.
[Selection] Figure 3

Description

  The present invention relates to a band such as a watch band.

  For example, in a watch band, as described in Patent Document 1, a synthetic resin band in which a convex portion is provided at one end portion and a concave portion in which the convex portion of the one end portion can be arranged at the other end portion is provided. What is comprised so that a piece may be connected sequentially is known.

Utility Model Registration No. 3148398

  This type of band piece consists of a pair of urethane outer parts, an inner part located between the pair of outer parts, and metal side parts that are respectively attached to the outer surfaces of the pair of outer parts. Divide and place the inner part in the connecting direction of the band piece between the pair of outer parts, and in this state, attach each outer part to the left and right sides of the inner part with the connecting pin, then each side part to each outer part Are configured to be attached respectively.

  However, in such a watch band, when molding a pair of outer parts in the band piece, in order to prevent product defects due to sink marks at the time of molding, the pair of outer parts are formed in a hollow shape so that the thickness is almost uniform. Accordingly, side parts for closing the hollow portions of the pair of outer parts are required. For this reason, the number of parts for constituting a band piece increases, and the assembly work of a band piece is complicated and troublesome, and the problem that productivity is bad arises.

  The problem to be solved by the present invention is to provide a band which can prevent molding defects due to sink marks during molding and can improve assembly workability and productivity with a small number of parts.

  The present invention provides a band formed by sequentially connecting a band piece provided with a convex part at one end and a concave part provided with the convex part at the other end, wherein the band piece is an upper portion made of synthetic resin. And a lower piece made of synthetic resin, the upper piece is located on both sides of the concave part of the band piece and a pair of protrusions corresponding to the convex part of the band piece, and a space is formed inside A pair of exterior parts, and the lower piece is disposed in an insertion projection part disposed between the pair of projection parts of the upper piece, and in the space part of the pair of exterior parts in the upper piece, respectively. It is a band characterized by having a pair of interior parts.

  According to this invention, when molding the upper piece and the lower piece with synthetic resin, it is possible to prevent the upper piece and the lower piece from forming defects due to sink marks, and to join the upper piece and the lower piece. As a result, the band piece can be formed easily and easily, and the assembly workability and productivity can be improved with a small number of parts.

It is an enlarged plan view of the principal part showing a first embodiment in which the present invention is applied to a watch band. FIG. 2 is an enlarged perspective view showing a band piece and a spring bar of the watch band shown in FIG. 1. FIG. 3 is an enlarged perspective view of the band piece shown in FIG. 2 disassembled into an upper piece and a lower piece and viewed obliquely from above. FIG. 3 is an enlarged perspective view of the band piece shown in FIG. 2 disassembled into an upper piece and a lower piece and viewed obliquely from below. It is an expansion perspective view of the principal part which showed the cross section in the AA arrow of the timepiece band shown in FIG. It is the enlarged plan view of the principal part which showed 2nd Embodiment which applied this invention to the timepiece band. It is the expansion perspective view which decomposed | disassembled the band piece of the timepiece band shown by FIG. 6 into the upper piece and the lower piece, and was seen from diagonally upward. It is an expansion perspective view of the principal part which showed the cross section in the BB arrow of the watch band shown in FIG.

(First embodiment)
A first embodiment in which the present invention is applied to a watch band will be described below with reference to FIGS.
As shown in FIGS. 1 and 2, this watch band has a structure in which a plurality of band pieces 1 are sequentially connected by a spring bar 2.

  As shown in FIGS. 1 and 2, the band piece 1 is provided with a convex portion 3 at one end portion (left end portion in FIG. 2) and a concave portion 4 at the other end portion (right end portion in FIG. 2). In a state where the convex portion 3 of the band piece 1 is disposed in the concave portion 4 of the other band piece 1 adjacent thereto, the convex portion 3 of the band piece 1 and the concave portion of the other band piece 1 adjacent thereto by the spring bar 2. 4 is configured to be connected to the side portions 5 located on both sides of the base plate 4.

  As shown in FIGS. 3 and 4, the band piece 1 has a hard synthetic resin upper piece 6 and a hard synthetic resin lower piece 7, and the upper piece 6 and the lower piece 7 are connected to each other. Each of them is formed so as to be formed into a shape having a small thickness unevenness. That is, the upper piece 6 is formed of a hard synthetic resin having high chemical resistance and low specific gravity. The upper piece 6 corresponds to a pair of protrusions 8 corresponding to the convex portion 3 of the band piece 1 and the side portions 5 located on both sides of the concave portion 4 of the band piece 1, and a space portion 9 is formed therein. And a pair of exterior parts 10.

  In this case, as shown in FIG. 3, the pair of protrusions 8 is connected to the upper part of the pair of protrusions 8 in the upper piece 6 except for the tip portions (left end portions in FIG. 3) of the pair of protrusions 8. A top surface portion 11 is provided so as to protrude rearward (right side in FIG. 3). Accordingly, the pair of protrusions 8 in the upper piece 6 are formed such that the left and right thicknesses are thinner than the upper and lower thicknesses, and the top surface part 11 is formed so that the upper and lower thicknesses are thin.

  Further, as shown in FIGS. 3 and 4, the pair of exterior portions 10 of the upper piece 6 are formed integrally with the rear end portions (right end portions in FIG. 3) of the outer side surfaces of the pair of protrusion portions 8. Front surfaces 10a and upper surfaces that are integrally formed at the upper portions of the front surface portions 10a and the outer end portions of the top surface portion 11 of the pair of protrusions 8 and project rearward (right side in FIG. 4) from the protrusions 8. Part 10b and each side part 10c formed integrally with each outer part of each upper surface part 10b and each outer part of each front face part 10a.

  Thereby, as shown to FIG. 3 and FIG. 4, as for a pair of exterior part 10, each front part 10a, each upper surface part 10b, and each side part 10c are each formed in the substantially uniform thickness. In this case, the upper piece 6 has the thickness of the pair of protrusions 8 in other portions, that is, the top surface portion 11, the front surface portions 10a that are the pair of exterior portions 10, the upper surface portions 10b, and the side surface portions 10c. It is formed a little thicker than the thickness. However, the upper piece 6 has a first pin insertion hole 15 to be described later formed in the pair of protrusions 8, so that the entire upper piece 6 is formed in a shape with a small thickness deviation, and there is a sink mark at the time of molding. It is configured not to occur.

  On the other hand, the lower piece 7 is made of the same material as that of the upper piece 6, that is, made of a hard synthetic resin having high chemical resistance and low specific gravity, and as shown in FIGS. It has the insertion protrusion part 12 arrange | positioned between, and a pair of interior part 13 each arrange | positioned in each space part 9 in a pair of exterior part 10 of the top piece 6. FIG. In this case, as shown in FIG. 3, a mounting recess 12 a in which the top surface portions 11 of the pair of protrusions 8 in the upper piece 6 are disposed is provided on the upper rear side of the insertion protrusion 12.

  Further, as shown in FIGS. 3 and 4, the pair of interior portions 13 in the lower piece 7 is formed of a pair of exterior portions in the upper piece 6 from the rear end face (right end face in FIG. 4) of the insertion protrusion 12 of the lower piece 7. The front side portions 13a that reach the side surface portions 10c of the upper piece 6 along the front surface portions 10a of the upper side pieces 10, and the side surface portions 10c of the pair of exterior portions 10 in the upper piece 6 from the outer end portions of the front side portions 13a. And side piece portions 13b formed integrally with each other.

  As a result, as shown in FIGS. 3 and 4, the lower piece 7 is formed with substantially the same thickness in the left-right direction of each side piece 13 b of the insertion protrusion 12 and the pair of interior parts 13. Each front part 10a which is a pair of interior parts 13 other than is formed thinly. Also in this case, a first pin insertion hole 15 to be described later is formed in the insertion protrusion 12, and a second pin insertion hole 16 to be described later is also formed in each side piece 13 b of the pair of interior parts 13. The entire lower piece 7 is formed in a shape having a small thickness deviation, and is configured so as not to cause sink marks during molding.

  As shown in FIGS. 2 to 4, the upper piece 6 and the lower piece 7 are configured such that the insertion protrusion 12 of the lower piece 7 is inserted from the lower side between the pair of protrusions 8 of the upper piece 6. When the pair of interior parts 13 of the lower piece are mounted in the space portions 9 of the pair of exterior parts 10 of the upper piece 6, the top surface part 11 of the upper piece 6 is attached to the attachment recess 12 a of the insertion protrusion 12 of the lower piece 7. The front side portions 13a of the pair of interior portions 13 are in close contact with the inner surfaces of the front surface portions 10a of the pair of exterior portions 10, and the side piece portions 13b of the pair of interior portions 13 are the upper surfaces of the pair of exterior portions 10. The band piece 1 is configured to be in close contact with the portion 10b and each side surface portion 10c and joined in this state.

  In this case, as shown in FIG. 3 and FIG. 4, a plurality of engagements for joining the upper piece 6 and the lower piece 7 to each other are joined to each joint surface of the upper piece 6 and the lower piece 7. A portion 14 is provided. The plurality of engaging portions 14 include a plurality of engaging concave portions 14 a provided on the joining surface of the upper piece 6 and a plurality of engaging convex portions 14 b provided on the joining surface of the lower piece 7. The plurality of engagement recesses 14a are formed in a substantially rectangular recess shape, and the plurality of engagement projections 14b are projections inserted into the respective engagement recesses 14a and gradually protrude downward. It is the structure which has the inclination part 14c.

  In this case, as shown in FIG. 3 and FIG. 4, the plurality of engaging recesses 14 a includes a pair of inner surfaces of the pair of protrusions 8 that are the joint surfaces of the upper piece 6 and a pair of joint surfaces that are the joint surfaces of the upper piece 6. It is provided on each inner side surface of the side surface portion 10 c facing each other of the exterior portion 10. In addition, the plurality of engaging convex portions 14b are formed on the outer side surfaces of the insertion protrusion 12 that is the joint surface of the lower piece 7 and the side piece portions that face each other of the pair of interior portions 13 that are the joint surfaces of the lower piece 7. 13b is provided on each outer surface.

  Incidentally, as shown in FIGS. 3 and 4, the first pin insertion holes 15 are continuously provided in the pair of protrusions 8 of the upper piece 6 and the insertion protrusions 12 of the lower piece 7. Moreover, as shown in FIG. 1, the convex part of the band piece 1 in each side part 10c in a pair of exterior part 10 of the upper piece 6, and each side piece part 13b in a pair of interior part 13 of the lower piece 7 is shown. When 3 is disposed in the recess 4 of the band piece 1 adjacent thereto, as shown in FIGS. 2 to 5, second pin insertion holes 16 corresponding to the first pin insertion holes 15 are respectively provided. .

  In this case, as shown in FIGS. 3 to 5, the first pin insertion holes 15 are formed on the upper piece through holes 15 a provided corresponding to the pair of protrusions 8 of the upper piece 6 and the lower pieces 7. The insertion protrusion 12 has a lower piece through hole 15b provided corresponding to each upper piece through hole 15a of the pair of protrusions 8. The upper piece through-holes 15a of the pair of protrusions 8 and the lower piece through-holes 15b of the insertion protrusions 12 are formed to have the same inner diameter, and the upper piece 6 and the lower piece 7 are joined together. In addition, they are configured to correspond to each other and to be continuous.

  Further, as shown in FIGS. 3 to 5, the second pin insertion hole 16 includes upper piece through holes 16 a provided corresponding to the side portions 10 c of the pair of exterior portions 10 of the upper piece 6, and Each side piece 13b of the pair of interior parts 13 of the lower piece 7 has each lower piece through hole 16b provided corresponding to each upper piece through hole 16a of each side surface portion 10c. The upper piece through-holes 16a and the lower piece through-holes 16b are formed to have the same inner diameter, and when the upper piece 6 and the lower piece 7 are joined, each upper piece through-hole 16a and the lower piece through-hole 16b are connected to each other. It is configured.

  As shown in FIG. 1, the first pin insertion hole 15 and the second pin insertion hole 16 are arranged such that the convex part 3 of the band piece 1 is disposed in the concave part 4 of the other band piece 1 adjacent thereto. In this case, as shown in FIG. 5, the band pieces 1, 1 adjacent to each other are connected to each other by inserting the spring rod 2 in this state and corresponding to each other. In this case, as shown in FIGS. 2 and 5, the spring bar 2 is in a state in which the pin portions 18 are pushed out at both end portions of the pipe portion 17 by spring members (not shown) in the pipe portion 17 so as to be able to protrude and retract. It is the structure provided in.

  In this case, as shown in FIG. 5, the first pin insertion hole 15 has an inner diameter that is the same as the outer diameter of the pipe portion 17 of the spring bar 2, and the length of the first pin insertion hole 15 is the same. The length of the pipe portion 17 is substantially the same. The second pin insertion hole 16 has an inner diameter that is the same as the outer diameter of the pair of pin portions 18 that protrude from both ends of the pipe portion 17 of the spring bar 2, and the second pin insertion hole 16 The length is longer than the protruding length of the pin portion 18 protruding from both ends of the pipe portion 17. For this reason, the inner diameter of the second pin insertion hole 16 is smaller than the inner diameter of the first pin insertion hole 15.

  Thereby, as shown in FIG. 5, the spring bar 2 has a pair of protrusions 8 and insertion protrusions 12 that are convex portions 3 of the band piece 1 when the adjacent band pieces 1 and 1 are connected to each other. The pipe part 17 is inserted into the first pin insertion hole 15 provided in the pipe part 17 and the pin part 18 protruding from both ends of the pipe part 17 is pushed into the pipe part 17 so that the convex part 3 of the band piece 1 is inserted. It arrange | positions in the recessed part 4 of the other band piece 1 adjacent to this, the pin part 18 is pushed out from the inside of the pipe part 17 with the spring force of a spring member (not shown), and the exterior part 10 and interior part of the adjacent band piece 1 13 is configured to be inserted into each second pin insertion hole 16 provided in 13.

Next, a case where such a band piece 1 is manufactured will be described.
First, the upper piece 6 and the lower piece 7 are each manufactured by a molding die. At this time, the upper piece 6 has a pair of protrusions 8 and a pair of exterior parts 10, and the thickness of the pair of protrusions 8 is another part, that is, the top surface part 11 of the pair of protrusions 8, and a pair of exteriors. It is formed slightly thicker than the thickness of each front surface portion 10a, each upper surface portion 10b, and each side surface portion 10c, which is the portion 10. However, the upper piece 6 has the first pin insertion hole 15 formed in the pair of protrusions 8 so that the entire upper piece 6 is formed in a shape having a small thickness deviation. The upper piece 6 is molded so as not to occur.

  The lower piece 7 includes an insertion protrusion 12 disposed between the pair of protrusions 8 of the upper piece 6 and a pair of interior portions 13 respectively disposed in the space 9 of the upper piece 6. Each thickness in the left-right direction of each side piece part 13b of the protrusion part 12 and a pair of interior part 13 is formed by the substantially same thickness, and each front side part 13a which is a pair of other interior part 13 is formed thinly. . However, also in this case, in the lower piece 7, the first pin insertion hole 15 is formed in the insertion protrusion 12, and the second pin insertion hole 16 is formed in each side piece 13 b of the pair of interior parts 13. Thus, the entire lower piece 7 is formed in a shape having a small thickness deviation, and thereby the lower piece 7 is molded so as not to cause sink marks during injection molding.

  When the band piece 1 is manufactured by joining the upper piece 6 and the lower piece 7 formed in this way, the insertion protrusion 12 of the lower piece 7 is placed on the lower side between the pair of protrusions 8 of the upper piece 6. The pair of interior parts 13 of the lower piece are mounted from the lower side in each space 9 in the pair of exterior parts 10 of the upper piece 6. Then, the top surface portion 11 of the upper piece 6 is attached to the attachment concave portion 12 a of the insertion projection portion 12 of the lower piece 7, and each front side portion 13 a of the pair of interior portions 13 is attached to the inner surface of each front portion 10 a of the pair of exterior portions 10. The side pieces 13b of the pair of interior portions 13 are in close contact with the upper surface portions 10b and the side surface portions 10c of the pair of exterior portions 10.

  At this time, the plurality of engaging convex portions 14b provided on the joining surface of the lower piece 7 are engaged with the plurality of engaging concave portions 14a provided on the joining surface of the upper piece 6, so that the upper piece 6 and the lower piece are engaged. 7 is joined. That is, it was provided on each inner side surface of the pair of protrusions 8 that are the joint surfaces of the upper piece 6 and on each inner side surface of the side surface portions 10c that face each other of the pair of exterior portions 10 that are the joint surfaces of the upper piece 6. In each of the plurality of engaging recesses 14 a, each of the outer side surfaces of the insertion protrusion 12 that is the joint surface of the lower piece 7 and each of the side piece portions 13 b that face each other of the pair of interior portions 13 that are the joint surfaces of the lower piece 7. A plurality of engaging projections 14b provided on the outer side surface are engaged.

  At this time, since the plurality of engaging convex portions 14b of the lower piece 7 have the inclined portions 14c that gradually protrude downward, when the upper piece 6 and the lower piece 7 are joined, the inclined portion The engaging projection 14b is smoothly engaged with the engaging recess 14a by 14c. Thus, the insertion protrusion 12 of the lower piece 7 is mounted from the lower side between the pair of protrusions 8 of the upper piece 6, and the pair of the lower pieces in the space portions 9 in the pair of exterior portions 10 of the upper piece 6. The upper piece 6 and the lower piece 7 are joined by the plurality of engaging portions 14 only by mounting the interior portion 13 from the lower side, whereby the band piece 1 is formed.

Next, the case where the band pieces 1 and 1 thus formed are connected by the spring bar 2 will be described.
At this time, first, the spring rod 2 is inserted into the first pin insertion holes 15 provided in the pair of projections 8 and the insertion projections 12 which are the convex portions 3 of the band piece 1, and the pipe portion of the spring rod 2 is inserted. 17 is installed in the first pin insertion hole 15.

  In this state, each pin portion 18 protruding from both ends of the pipe portion 17 of the spring bar 2 is pushed into the pipe portion 17 against the spring force of a spring member (not shown) in the pipe portion 17. And the convex part 3 of the band piece 1 is arrange | positioned in the recessed part 4 of the other band piece 1 adjacent to this, and the 1st pin insertion hole 15 provided in the pair of projection part 8 and the insertion projection part 12 is used. It is made to correspond to each 2nd pin insertion hole 16 provided in a pair of exterior parts 10 and a pair of interior parts 13, respectively.

  Then, each pin part 18 of the spring bar 2 is pushed out from the inside of the pipe part 17 by the spring force of a spring member (not shown), and is provided in the exterior part 10 and the interior part 13 of another adjacent band piece 1. The second pin insertion holes 16 are inserted. Thereby, the adjacent band pieces 1 and 1 are connected by the spring bar 2. By repeating this operation and sequentially connecting a plurality of band pieces 1, a watch band is formed.

  Thus, according to this watch band, the band piece 1 provided with the convex part 3 at one end and the concave part 4 in which the convex part 3 can be arranged at the other end is provided with the upper piece 6 made of synthetic resin. And the lower piece 7 made of synthetic resin, and the upper piece 6 and the lower piece 7 are joined to each other by forming them in a shape with less thickness deviation. As a result, it is possible to prevent molding defects due to sink marks and improve assembly workability and productivity with a small number of parts.

  That is, in this timepiece band, when the upper piece 6 and the lower piece 7 are molded from synthetic resin, the upper piece 6 and the lower piece 7 have shapes with little thickness deviation, respectively. Occurrence of molding defects due to sink marks on the lower piece 7 can be prevented. For this reason, when the upper piece 6 and the lower piece 7 are molded, it is not necessary to use a molding machine having a large mold clamping force and a high injection pressure, so that the manufacturing cost can be reduced.

  In this watch band, the band piece 1 can be easily and easily formed by simply joining the upper piece 6 and the lower piece 7 together. For this reason, since it is the structure which only joins two parts, the upper piece 6 and the lower piece 7, there are few parts, assembly workability | operativity is good, and it can aim at the improvement of productivity, and also low price by this. Can be provided.

  In addition, according to this watch band, the upper piece 6 and the lower piece 7 are formed of a hard synthetic resin having a low specific gravity, so that even if it is as hard as a metal, it is a lightweight band piece. 1, thereby reducing the weight of the entire watch band. In this case, the upper piece 6 and the lower piece 7 are made of synthetic resin having high chemical resistance, so that the surface of the band piece 1 is not only dirty but also not easily scratched. can do.

  The upper piece 6 and the lower piece 7 are made of the same hard synthetic resin, so that the productivity of the upper piece 6 and the lower piece 7 is good, and the upper piece 6 and the lower piece 7 are When the band piece 1 is formed by bonding, the upper piece 6 and the lower piece 7 have a sense of unity, and the band piece 1 has no discomfort in terms of appearance and design, and provides the band piece 1 that is preferable. can do.

  Further, in this watch band, the upper piece 6 of the band piece 1 corresponds to a pair of protrusions 8 corresponding to the convex part 3 of the band piece 1 and both side parts 5 located on both sides of the concave part 4 of the band piece 1. And a pair of exterior parts 10 each having a space 9 formed therein, and the lower piece 7 of the band piece 1 is inserted between the pair of protrusions 8 of the upper piece 6; By having a pair of interior parts 13 respectively arranged in each space part 9 in the pair of exterior parts 10 of the upper piece 6, the upper piece 6 and the lower piece 7 are each in a shape with less thickness deviation. Can be formed.

  That is, in this timepiece band, the upper piece 6 has a pair of projections 8 and a pair of exterior parts 10, the pair of projections 8 has a top surface part 11, and the pair of exterior parts 10 are each front part 10a. Even if each upper surface portion 10b and each side surface portion 10c are provided, the upper piece 6 can be formed in a good shape so that it can be formed in a shape with little thickness deviation, and thus no sink marks are generated during injection molding. Can be molded.

  Similarly, the lower piece 7 includes an insertion protrusion 12 and a pair of interior parts 13, the insertion protrusion 12 includes a mounting recess 12 a, and the pair of interior parts 13 includes each front side part 13 a and each side piece part. Even if it has 13b, it can form in the shape with few thickness deviations, and the bottom piece 7 can be shape | molded favorably so that a sink may not arise at the time of injection molding by this.

  In this case, the upper piece 6 has a pair of protrusions 8 having other thicknesses, that is, the top surface part 11 of the pair of protrusions 8, the front surface part 10 a that is the pair of exterior parts 10, the upper surface parts 10 b, and Even if each side surface portion 10c is formed to be slightly thicker than the thickness of each side portion 10c, the first pin insertion hole 15 is formed in the pair of protrusions 8 so that the entire upper piece 6 has a shape with less thickness unevenness. Since it can be formed, the upper piece 6 can be accurately and satisfactorily molded so as not to cause sink marks during injection molding.

  Similarly, in the lower piece 7, each insertion piece 12 and each side piece 13 b of the pair of interior parts 13 are formed with substantially the same thickness, and each front side part 13 a that is a pair of interior parts 13 other than this. The first pin insertion hole 15 is formed in the insertion protrusion 12 and the second pin insertion hole 16 is formed in each side piece 13b of the pair of interior parts 13, so that the lower piece Since the whole 7 can be formed in a shape with a small thickness deviation, the lower piece 7 can be accurately and satisfactorily molded so as not to cause sink marks during injection molding.

  Furthermore, according to this watch band, a plurality of engaging portions 14 are provided on the joint surfaces of the upper piece 6 and the lower piece 76 to engage with each other to join the upper piece 6 and the lower piece 7. Therefore, when the upper piece 6 and the lower piece 7 are joined, the upper piece 6 and the lower piece 7 are simply and easily joined by the plurality of engaging portions 14 without using an adhesive or the like. be able to.

  In other words, the plurality of engaging portions 14 are provided on the joining surface of the upper piece 6 in a substantially rectangular shape, and are provided on the joining surface of the lower piece 7 and gradually downward. Since the plurality of engaging convex portions 14b having the inclined portions 14c projecting to the upper piece 6 and the lower piece 7 are joined, the plurality of engaging convex portions 14b are joined to the plurality of engaging concave portions 14a. By engaging, the upper piece 6 and the lower piece 7 can be reliably and satisfactorily joined. In this case, since the plurality of engaging convex portions 14b of the lower piece 7 have inclined portions 14c that gradually protrude toward the lower side thereof, when the upper piece 6 and the lower piece 7 are joined, By the inclined portion 14c, the engaging convex portion 14b can be smoothly engaged with the engaging concave portion 14a.

  Further, the plurality of engaging recesses 14 a are formed on the inner side surfaces of the pair of protrusions 8 that are the joint surfaces of the upper piece 6 and the side surface portions 10 c that face each other of the pair of exterior portions 10 that are the joint surfaces of the upper piece 6. Provided on each inner surface, the plurality of engaging projections 14 b are formed on the outer surfaces of the insertion protrusions 12 that are the joint surfaces of the lower piece 7 and the pair of interior parts 13 that are the joint surfaces of the lower piece 7. The upper piece 6 and the lower piece 7 are formed by engaging the plurality of engaging convex portions 14b with the plurality of engaging concave portions 14a. Can be reliably and firmly joined.

  Further, in this watch band, a first pin insertion hole 15 is continuously provided in the pair of protrusions 8 of the upper piece 6 and the insertion protrusion 12 of the lower piece 7, and the pair of exterior parts of the upper piece 6. 10 and a pair of interior parts 13 of the lower piece 7 are respectively provided with second pin insertion holes 16, and the convex part 3 of the band piece 1 is arranged in the concave part 4 of the other band piece 1 adjacent thereto. At this time, since the first pin insertion holes 15 correspond to the second pin insertion holes 16, the band pieces 1, 1 adjacent to each other can be easily and reliably connected by the spring bar 2.

  In this case, the spring bar 2 has a configuration in which the pin portions 18 are provided at both end portions of the pipe portion 17 in a state where the pin portions 18 are pushed out by a spring member (not shown) in the pipe portion 17, respectively. Accordingly, the first pin insertion hole 15 has an inner diameter that is the same as the outer diameter of the pipe portion 17 of the spring bar 2, and the second pin insertion hole 16 has an inner diameter that is a pair of pin portions of the spring bar 2. 18 so that the inner diameter of the first pin insertion hole 15 is larger than the inner diameter of the second pin insertion hole 16. Adjacent band pieces 1 and 1 can be connected to each other.

  That is, in this watch band, when the adjacent band pieces 1 and 1 are connected to each other, the first pin inserted in the pair of protrusions 8 and the insertion protrusions 12 which are the protrusions 3 of the band piece 1 is inserted. The pipe portion 17 of the spring bar 2 is inserted into the hole 15 and each pin portion 18 protruding from both ends of the pipe portion 17 is pushed into the pipe portion 17 so that the convex portion 3 of the band piece 1 is adjacent thereto. When arranged in the recess 4 of the other band piece 1, each pin part 18 is pushed out from the pipe part 17 by a spring member (not shown) spring force, and is applied to the exterior part 10 and the interior part 13 of the adjacent band piece 1. Since it can be inserted into each provided second pin insertion hole 16, the band pieces 1, 1 adjacent to each other can be easily and reliably connected by the spring bar 2.

  In this case, the pipe portion 17 of the spring bar 2 is disposed in the first pin insertion hole 15 provided in the convex portion 3 of the band piece 1, and the pin portions 18 protruding from both ends of the pipe portion 17 of the spring bar 2 are banded. Since it is the structure arrange | positioned in the 2nd pin insertion hole 16 provided in the both sides 5 located in the both sides of the recessed part 4 of the piece 1, the protrusion of the pin part 18 protruded from the both ends of the pipe part 17 of the spring bar 2 The length can be formed to an optimum length, and when the adjacent band pieces 1 and 1 are pulled with the spring bars 2 connected to each other, the band pieces 1 and 1 are connected to each other. Strength can be ensured and a watch band with high tensile strength can be provided.

(Second Embodiment)
Next, a second embodiment in which the present invention is applied to a watch band will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as 1st Embodiment shown by FIGS.
As shown in FIG. 8, this watch band has a configuration in which adjacent band pieces 1 and 1 are connected to each other by a pin member 20, and the other configuration is substantially the same as that of the first embodiment.

  In this case, as shown in FIGS. 7 and 8, a retaining pipe 22 into which the pin member 20 is inserted is fitted into the first pin insertion hole 21 provided in the convex portion 3 of the band piece 1. The retaining pipe 22 has a configuration in which a slit 22b is formed in the pipe 22a along the axial direction, thereby providing springiness in the radial direction of the pipe. The retaining pipe 22 is formed so that its inner diameter is slightly smaller than the outer diameter of the pin member 20 and its axial length is shorter than the lateral length of the insertion protrusion 12 of the lower piece 7.

  Accordingly, as shown in FIG. 8, the retaining pipe 22 is configured to be elastically fitted to the outer peripheral surface of the pin member 20 by a spring force when the pin member 20 is inserted therein. ing. The first pin insertion hole 21 into which the retaining pipe 22 is inserted includes an upper piece through hole 21 a provided in the pair of protrusions 8 of the upper piece 6 and a lower piece provided in the insertion protrusion 12 of the lower piece 7. And a through hole 21b.

  In this case, the lower piece through hole 21b of the first pin insertion hole 21 has an inner diameter that is substantially the same as the outer diameter of the retaining pipe 22, as shown in FIG. Further, the upper piece through hole 21 a of the first pin insertion hole 21 has an inner diameter that is substantially the same as the outer diameter of the pin member 20. Thus, the first pin insertion hole 21 is formed in a shape having an inner diameter of the upper piece through hole 21a smaller than an inner diameter of the lower piece through hole 21b, thereby having a step.

  Further, as shown in FIG. 8, the second pin insertion hole 23 includes an upper piece through hole 23 a provided in each side surface portion 10 c of the pair of exterior portions 10 of the upper piece 6 and a pair of interior pieces of the lower piece 7. It has the lower piece through-hole 23b provided in each side piece part 13b in the part 13, respectively. Each of the upper piece through hole 23 a and the lower piece through hole 23 b has an inner diameter that is substantially the same as the outer diameter of the pin member 20.

Next, the case where the band pieces 1 and 1 of such a watch band are connected by the pin member 20 will be described.
At this time, before joining the upper piece 6 and the lower piece 7, first, the retaining pipe 22 is inserted into the lower piece through hole 21 b of the first pin insertion hole 21 provided in the insertion protrusion 12 of the lower piece 7. In this state, similarly to the first embodiment, the upper piece 6 and the lower piece 7 are joined to form the band piece 1.

  The projection 3 of the band piece 1 formed in this way is arranged in the recess 4 of the other band piece 1 adjacent thereto, and the first pin inserted in the pair of projections 8 and the insertion projection 12 The holes 21 are made to correspond to the respective second pin insertion holes 23 provided in the pair of exterior parts 10 and the pair of interior parts 13. In this state, the pin member 20 is moved toward the first pin insertion hole 21 from the upper piece through hole 23a of the second pin insertion hole 23 located on one side of each side surface portion 10c of the pair of exterior portions 10 of the upper piece 6. Insert it.

  Then, the pin member 20 passes through the lower piece of the second pin insertion hole 23 from the upper piece through hole 23a of the second pin insertion hole 23 located on one side of each side surface portion 10c of the pair of exterior parts 10 of the upper piece 6. The first pin insertion hole 21 is inserted into the upper piece through hole 21a through the hole 23b, and the tip of the inserted pin member 20 is inserted into the lower pin through hole 21b of the first pin insertion hole 21. Then, the tip of the pin member 20 is inserted into the retaining pipe 22 fitted in the lower piece through hole 21 b of the first pin insertion hole 21. At this time, the tip of the pin member 20 is inserted into the retaining pipe 22 against the spring property of the retaining pipe 22.

  The tip of the pin member 20 inserted through the retaining pipe 22 passes through the upper piece through hole 21a located on the opposite side of the first pin insertion hole 21 from the lower piece through hole 23b of the second pin insertion hole 23. The 2-pin insertion hole 23 is inserted into the upper piece through hole 23a. Thereby, the adjacent band pieces 1 and 1 are connected by the pin member 20. By repeating this operation and sequentially connecting a plurality of band pieces 1, a watch band is formed.

  Thus, when the pin member 20 is inserted into the first pin insertion hole 21 and the second pin insertion hole 23 of the band piece 1, the pin member 20 is clamped by the spring property of the retaining pipe 22. The pin member 20 does not come out of the first and second pin insertion holes 21 and 23 without permission. In this state, since the retaining pipe 22 is fitted in the lower piece through hole 21b of the first pin insertion hole 21, the retaining pipe 22 comes out of the lower piece through hole 21b of the first pin insertion hole 21. There is no.

  That is, the upper pin through hole 21a of the first pin insertion hole 21 has an inner diameter smaller than the inner diameter of the lower piece through hole 21b of the first pin insertion hole 21, so that the retaining pipe 22 is the first pin. It does not slip out from the lower piece through hole 21b of the insertion hole 21 and is inserted into the upper piece through hole 21a of the first pin insertion hole 21. For this reason, the retaining pipe 22 is securely fixed in the lower piece through hole 21b of the first pin insertion hole 21, and in this state, the pin member 20 is securely clamped and the first pin insertion hole 21 and the second pin It is attached to the insertion hole 23.

  As described above, according to this watch band, the same effect as the first embodiment is obtained, and the pin member 20 is inserted into the first pin insertion hole 21 and the second pin insertion hole 23 via the retaining pipe 22. By being inserted, the inserted pin member 20 can be obtained simply by inserting the pin member 20 continuously into the adjacent first and second pin insertion holes 21 and 23 of the band pieces 1 and 1. Thus, the adjacent band pieces 1 and 1 can be easily and reliably connected to each other.

  In this case, the retaining pipe 22 is configured to have a spring property in the radial direction of the pipe by forming a slit 22b in the pipe 22a along the axial direction, and the first pin insertion hole 21 is a pair of the upper piece 6. The upper piece through-hole 21a provided in the projection 8 and the lower piece through-hole 21b provided in the insertion projection 12 of the lower piece 7 have an inner diameter of the lower piece through-hole 21b. Since the retaining pipe 22 is disposed in the lower piece through hole 21b, the retaining member 22 ensures that the pin member 20 is inserted into the first pin inserting hole 21 and the second pin inserting hole 23. And it can be attached firmly.

  That is, in this watch band, when the pin member 20 is inserted into the first pin insertion hole 21 and the second pin insertion hole 23 of the band piece 1, the pin member 20 is clamped by the spring property of the retaining pipe 22. Therefore, the pin member 20 does not come out of the first and second pin insertion holes 21 and 23. In this state, since the retaining pipe 22 is fitted in the lower piece through hole 21b of the first pin insertion hole 21, the retaining pipe 22 comes out of the lower piece through hole 21b of the first pin insertion hole 21. Can be prevented.

  In this case, since the inner diameter of the upper piece through-hole 21a of the first pin insertion hole 21 is smaller than the inner diameter of the lower piece through-hole 21b of the first pin insertion hole 21, the retaining pipe 22 is the first. It is possible to prevent the pin insertion hole 21 from being pulled out of the lower piece through hole 21b and inserted into the upper piece through hole 21a of the first pin insertion hole 21, thereby preventing the retaining pipe 22 from being lost. it can.

  For this reason, the retaining pipe 22 is securely fixed in the lower piece through hole 21b of the first pin insertion hole 21, and in this state, the pin member 20 is securely clamped and the first pin insertion hole 21 and the second pin When the band pieces 1 and 1 adjacent to each other can be attached to the insertion hole 23, the connection strength between the band pieces 1 and 1 against the pull is compared with the case where the spring bars 2 are connected. Thus, a watch band having high tensile strength can be provided.

  In each of the first and second embodiments described above, the case where the upper piece 6 and the lower piece 7 are formed of the same hard synthetic resin and the same color has been described. However, the upper piece 6 and the lower piece 7 are not necessarily formed in the same color. Alternatively, the upper piece 6 and the lower piece 7 may be formed in different colors. If the upper piece 6 and the lower piece 7 are formed in different colors in this way, design variations can be abundant and the design can be further improved.

  In the first and second embodiments described above, the case where the upper piece 6 and the lower piece 7 are formed of the same hard synthetic resin has been described. However, it is not always necessary to form the same piece of the same hard synthetic resin. The upper piece 6 and the lower piece 7 may be formed of different synthetic resins. In this case, the synthetic resin of different materials may be a hard synthetic resin made of different materials, or may be a hard synthetic resin and a soft synthetic resin.

  Furthermore, in each of the first and second embodiments described above, the case where the present invention is applied to a watch band has been described. However, the present invention is not necessarily a watch band, and may be used as, for example, a bracelet or a band such as a bag. May be.

As mentioned above, although several embodiment of this invention was described, this invention is not restricted to these, The invention described in the claim and its equal range are included.
The invention described in the claims of the present application will be appended below.

(Appendix)
The invention according to claim 1 is a band formed by sequentially connecting a band piece provided with a convex part at one end and a concave part where the convex part can be arranged at the other end. An upper piece made of synthetic resin and a lower piece made of synthetic resin, wherein the upper piece is located on both sides of the pair of protrusions corresponding to the convex part of the band piece, and the concave part of the band piece, and internally A pair of exterior portions formed with a space portion, and the lower piece includes an insertion projection portion disposed between the pair of projection portions of the upper piece, and the pair of exterior portions of the upper piece. It is a band characterized by having a pair of interior parts each arrange | positioned in a space part.

  The invention described in claim 2 is the band according to claim 1, wherein the upper piece and the lower piece are formed of a hard synthetic resin.

  According to a third aspect of the present invention, in the band according to the first or second aspect, the joint surfaces of the upper piece and the lower piece are engaged with each other so that the upper piece and the lower piece A band is provided with a plurality of engaging portions for joining the two.

  According to a fourth aspect of the present invention, in the band according to any one of the first to third aspects, the pair of protrusions of the upper piece and the insertion protrusions of the lower piece have first pin insertion holes. Are provided continuously, and the convex part of the band piece is arranged in the concave part of the other band piece adjacent to the pair of external parts of the upper piece and the pair of internal parts of the lower piece. In this case, the second pin insertion hole corresponding to the first pin insertion hole is provided.

  The invention according to claim 5 is the band according to claim 4, wherein a spring bar is inserted into the first pin insertion hole and the second pin insertion hole. .

  According to a sixth aspect of the present invention, in the band according to the fourth aspect, a pin member is inserted into the first pin insertion hole and the second pin insertion hole via a retaining member. It is a characteristic band.

  According to a seventh aspect of the present invention, in the band according to the sixth aspect, the first pin insertion hole includes an upper piece through hole provided in the pair of protrusions of the upper piece and the insertion protrusion of the lower piece. A lower piece through hole provided in a portion, wherein an inner diameter of the upper piece through hole is smaller than an inner diameter of the lower piece through hole, and the retaining member is disposed in the lower piece through hole. It is a band characterized by being.

DESCRIPTION OF SYMBOLS 1 Band piece 2 Spring bar 3 Convex part 4 Concave part 5 Both side part 6 Upper piece 7 Lower piece 8 A pair of projection part 9 Space part 10 A pair of exterior parts 12 Insertion protrusion part 13 A pair of interior part 14 Engagement part 14a Engagement recessed part 14b Engaging convex portion 15, 21 First pin insertion hole 15a, 21a Upper piece through hole 15b, 21b Lower piece through hole 16, 23 Second pin insertion hole 16a, 23a Upper piece through hole 16b, 23b Lower piece through hole 20 Pin member 22 retaining pipe

Claims (7)

In a band formed by sequentially connecting a band piece provided with a convex portion at one end and a concave portion where the convex portion can be arranged at the other end,
The band piece includes a synthetic resin upper piece and a synthetic resin lower piece,
The upper piece has a pair of protrusions corresponding to the convex part of the band piece, and a pair of exterior parts located on both sides of the concave part of the band piece and having a space portion formed therein.
The lower piece includes an insertion protrusion disposed between the pair of protrusions of the upper piece, and a pair of interior portions respectively disposed in the space portion of the pair of exterior portions of the upper piece. A band characterized by being.   The band according to claim 1, wherein the upper piece and the lower piece are formed of a hard synthetic resin.   The band according to claim 1 or 2, wherein each of the joint surfaces of the upper piece and the lower piece is engaged with each other so as to join the upper piece and the lower piece. A band characterized in that a part is provided.   The band according to any one of claims 1 to 3, wherein the pair of protrusions of the upper piece and the insertion protrusion of the lower piece are provided with first pin insertion holes continuously, The pair of exterior parts of the upper piece and the pair of interior parts of the lower piece have the first pin when the convex part of the band piece is disposed in the concave part of another band piece adjacent thereto. A band, wherein a second pin insertion hole corresponding to the insertion hole is provided.   The band according to claim 4, wherein a spring bar is inserted into the first pin insertion hole and the second pin insertion hole.   The band according to claim 4, wherein a pin member is inserted into the first pin insertion hole and the second pin insertion hole via a retaining member. The band according to claim 6, wherein the first pin insertion hole includes an upper piece through hole provided in the pair of protrusions of the upper piece and a lower piece through hole provided in the insertion protrusion of the lower piece. A band in which the inner diameter of the upper piece through hole is smaller than the inner diameter of the lower piece through hole, and the retaining member is disposed in the lower piece through hole.

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