JP3042647U - Urethane band pieces - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is a urethane coupling resin type band which facilitates the formation of a coupling hole and prevents the side portion from protruding into the convex portion due to the driving of the C ring. The purpose is to provide new pieces. According to the present invention, one to several convex portions are provided on one side in the connecting direction, and one to several concave portions that mesh with the convex portions are provided on the other side, and the convex portion and the concave portion are connected in the middle. A large number of band pieces with holes are made of urethane resin with hardness of 95 or more,
A band piece structure made of urethane characterized in that each band piece is connected to a connecting hole communicating with the engagement of the concave portion and the convex portion by connecting and disconnecting the connecting pin so as to be detachable.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 This invention relates to a band piece made of urethane resin.

[0002]

[Prior art]

 Traditionally, a long, integral band has been made due to the flexible nature of urethane resin and the flexibility of coloring.

[0003]

[Problems to be solved by the device]

 However, there was a problem that the long integrated band significantly restricted the development of design variations.

Although attempts have been made to form band pieces of various shapes in order to solve such problems, there is a problem in that the practicability is poor because the tensile strength and the strength against bending and twisting are insufficient. Further, the urethane resin band piece has a problem that it is difficult to form a small-diameter hole because of the material and the forming process. Furthermore, if a connecting pin consisting of a convex pin and a C ring is used for connection, there is a problem that the large-diameter head portion of the convex pin and the C ring will dig into the small-diameter part in the middle of the connecting hole due to the pressure at the time of insertion. It

[0005]

[Means for Solving the Problems]

 In the present invention, a band piece having concave and convex portions for engagement on both sides is formed of urethane resin having a hardness of 95 or more, and a small-diameter intermediate portion of a connection hole provided in each band piece is formed by inserting a metal pipe. Overcoming the difficulty of forming a small-diameter connecting hole, and preventing the large-diameter head portion of each band piece and the C-ring from biting into the intermediate small-diameter portion when connecting the convex pin and the C-ring by press fitting. , Solved this problem.

[0006]

DETAILED DESCRIPTION OF THE INVENTION A description will be given below with reference to the drawings.

A plurality of band pieces 3 having a convex portion 1 on one side in the connecting direction and a concave portion 2 engaging with the convex portion 1 on the other side are formed by molding urethane resin having a hardness of 95 or more. Each band piece 3 has connecting holes 5a and 5b formed in the transverse direction between the convex portion 1 and the concave portion 2 in the transverse direction. The connecting holes 5b and 5b on the concave portion 2 side are formed to have a diameter slightly wider than the large diameter head portion 4a of the convex pin 4 including the large diameter head portion 4a and the small diameter shaft portion 4b. A hole 6a having a diameter slightly larger than the connecting holes 5b, 5b is provided in the direction, and a metal pipe 6 is inserted into the hole 6a and the inner diameter of the pipe 6 corresponds to the small diameter shaft portion 4b of the convex pin 4. The small-diameter intermediate connecting hole 5a is formed. Therefore, the connecting hole 5a of the convex portion 1 can be formed without difficulty regardless of the small diameter. Each band piece 3 meshes with the convex portion 1 and the concave portion 2, and the convex pin 4 is inserted from the small diameter shaft portion 4b from one end of the connecting holes 5a and 5b which communicate with each other, and the large diameter head portion 4a from the connecting hole at the other end. A C ring 7 having substantially the same diameter is driven in to clamp the end of the small diameter shaft portion 4a of the convex pin 4 and connect the band pieces 3 to form a band 8 of a predetermined length.

It should be noted that the number of the convex portions 1 and the concave portions 2 of the band piece 3 can be increased to two or more.

[0009]

[Effect of the invention]

 As described above, according to the present invention, the band piece is formed of the urethane resin having the hardness of 95 or more. Therefore, it is possible to obtain the band piece which can sufficiently withstand the tensile strength, bending and twisting.

Since the small-diameter intermediate portion of the connecting hole is formed by inserting the metal pipe, the difficulty of forming the small-diameter hole of urethane resin is eliminated, and the metal pipe to be inserted is pressed into the convex head part. And the effect of preventing the biting on the convex side due to the driving of the C ring is produced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a band piece before connection.

FIG. 2 is a cross-sectional view showing the band pieces in a connected state.

3A and 3B are a plan view and a side view showing an example of a watch band having a predetermined length by attaching long end pieces at both ends and a one-touch three-fold metal fitting in the middle.

[Explanation of symbols]

 1 is a convex portion 2 is a concave portion 3 is a band piece 4 is a convex pin 4a is a large diameter head portion 4b is a small diameter shaft portion 5a, 5b is a connecting hole 6 is a metal pipe 7 is a C ring 8 is a band 9 is one-touch three-fold Metal fittings

Front page continuation (72) Inventor Shuji Takahashi 4-5-11 Ginza, Chuo-ku, Tokyo Stock company Hattori Seiko

Claims (3)

[Utility model registration claims] 1. One to several convex portions are provided on one side in the connecting direction, and one to several concave portions that mesh with the convex portions are provided on the other side,
In addition, a large number of band pieces each having a connecting hole provided between the convex portion and the concave portion are made of urethane resin having a hardness of 95 or more, and each of the band pieces serves as a connecting hole communicating with the engagement between the concave portion and the convex portion. A urethane band piece structure in which a connecting pin is inserted and unfastened and connected in a freely removable manner. 2. A connecting pin having a small diameter in the middle portion and a large diameter on both sides, a convex pin having a large-diameter head portion and a small-diameter shaft portion being inserted from one end of the connecting hole, and a C-ring being inserted from the other end. 2. The urethane band piece structure according to claim 1, wherein the band pieces are connected by driving. 3. The urethane band piece structure according to claim 2, wherein a small-diameter intermediate portion of the connecting hole is formed by inserting a metal pipe.