JPH04104910U - Band buckle structure - Google Patents

Abstract

(57) [Summary] [Purpose] This invention relates to a watch buckle that can be easily assembled. [Structure] The synthetic resin buckle body is formed into a U-shape, a mounting hole is provided at one end, a mounting rod is provided at the other end, and the end of the mounting rod is press-fitted into the mounting hole to assemble. This is what I did. [Effect] Simple structure and easy to attach to the band.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to the structure of a synthetic resin buckle for a band used in a wristwatch or the like.

0002

[Conventional technology]

Regarding the material of the buckle body of the band, it is economically superior due to mass production, and it is easy to assemble. Recently, synthetic resins have come to be used due to their elasticity, which is convenient for There is. The main body of the buckle is generally U-shaped, and there are indentations at both ends of the U-shape. A pin or a spring is inserted into the recess or hole. A spring bar or the like having a sliding body urged to protrude outward is inserted. deer However, since the buckle body is made of synthetic resin and has low rigidity, it can be bent into a U-shaped shape by external force. Both ends of the buckle may open, and the pin and spring bar may easily come off from both ends of the buckle body. There were some drawbacks.

0003 As one conventional example to solve this drawback, it is shown in Utility Model Application Publication No. 58-80022. Press the metal mounting rod into at least one hole of the U-shaped buckle body so that the There is a buckle that prevents the mounting rod from coming off the buckle body.

0004 An exploded perspective view of a conventional example of a band buckle with this press-fit fixation is shown in Fig. 4, and Fig. 5 shows an exploded perspective view. Shown in a partial cutaway plan view. The U-shaped buckle body 10 is made of synthetic resin. The opposing first tip portion 12 and second tip portion 14 have a stepped first hole 16 and a stepped hole, respectively. Two holes 18 are formed. The stepped first hole 16 and the stepped second hole 18 are each The inner diameter of the stepped portion is made smaller and the outer diameter is made larger.

[0005] On the other hand, the mounting rod 20 for connecting the first tip 12 and the second tip 14 is , a neck portion 22 having a small diameter at one end and a locking protrusion 24 having a larger diameter than the neck portion 22 at the tip thereof. It is formed. The outer peripheral side of this locking protrusion 24 has a tape that tapers toward the tip. The maximum diameter of the locking protrusion 24 is larger than the small diameter portion of the stepped first hole 16. It is said to have a large diameter. Further, at the other end of the mounting rod 20, a small diameter portion of the stepped second hole 18 is provided. A head 26 with a larger diameter is formed. The diameter of the small diameter portion of the stepped second hole 18 is , is sized so that the locking protrusion 24 and the main body 28 of the mounting rod 20 can be inserted therethrough. There is.

[0006] This attachment rod 20 connects the first tip 12 and the second tip 14 of the buckle body 10. In the case where the locking protrusion 24 of the mounting rod 20 is moved from the stepped second hole 18 to the stepped first hole 16 Pass it through toward the side, and at that time, insert the insertion hole 32 of the band 30 into the mounting rod 20 and the rod 34 that is attached. The annular portion 36 is passed through. After this locking protrusion 24 comes into contact with the entrance of the stepped first hole 16 , further pushes the mounting rod 20 in its advancing direction. At this time, the maximum diameter of the locking protrusion 24 is Although the diameter is larger than the small diameter part of the stepped first hole 16, the buckle main body 10 made of synthetic resin is elastic. Because of its strength, the locking protrusion 24 passes through the small diameter portion of the first hole 16 by press fitting. and reaches the large diameter part. This locking protrusion 24 is press-fitted into the stepped first hole 16. In this case, the head 26 at the other end of the mounting rod 20 comes into contact with the step of the stepped second hole 18. . Note that the same effect can be obtained by using the locking protrusions 24 at both ends of the mounting rod 20. .

[0007] In this way, the locking protrusion 24 at the tip of the mounting rod 20 is press-fitted into the stepped first hole 16. This prevents the locking protrusion 24 from returning through the small diameter portion of the first hole 16. Therefore, it is possible to solve the conventional problem that the mounting rod 20 comes off from the buckle body 10. I was able to do it.

[0008] Next, as another conventional example, the one shown in FIGS. 6 to 8 of Utility Model Application Publication No. 58-80021 There is. This idea consists of a buckle main body 30 and two mounting rods 31 and 32, and two A mounting hole 31a and a press-fitting part 32b are provided on each of the mounting rods so that they can be connected. It is. This made it possible to reduce the cost of the buckle.

[0009]

[Problem that the idea aims to solve]

However, in the structure of FIGS. 4 and 5 shown at the beginning of the conventional example, most of the buckle main body 10 is Therefore, a metal mounting rod 20 is required, and the shape of the mounting rod 20 has a large diameter head. 26 must be formed. In order to manufacture a metal mounting rod having a head 26 with a large diameter, the diameter is larger than the head 26. Since the thick bar material must be cut, the cost is high and it is not suitable for mass production. .

0010 In addition, in the structures shown in FIGS. 6, 7, and 8 shown after the conventional example, the mounting rod is divided into two. It is divided into parts and connected by a mounting hole 32a and a press-fitting part 32b provided in each part. However, the connecting parts must have a certain level of strength. As a result, the mounting hole and press-fitting part become large, making it difficult to actually use it as a clasp for a band. Jiru.

[0011] Furthermore, since the connecting part is located in the center of the mounting rod, there is no need to apply a slight force to the mounting rod. There is a risk that it will come off even if you use it, and due to its strength, it is impossible to use it as a clasp for a band. was there. Moreover, when attaching the two mounting rods on both sides to the tip of the band, the buckle itself must be made larger. We must widen the scope.

0012 The purpose of this invention is to make the buckle body and the mounting rod integrally from synthetic resin material. In addition to reducing costs, by taking advantage of the flexibility of synthetic resin materials, both ends of the buckle body can be Attach the mounting rod with the band and attachment rod to the end of the buckle body by spreading it out. It can be press-fitted into the mounting hole, and the installation work is easy and sufficient. The objective is to obtain a band buckle structure with high strength.

[0013]

[Means to solve the problem]

In order to achieve the above purpose, this invention was developed to create a substantially U-shaped structure made of synthetic resin material. A mounting hole is provided on one side of the tip of the shaped buckle body, and a mounting rod is provided on the other side facing inward. The mounting rod has a small diameter part at the tip thereof, and a large diameter part which reaches the tip and becomes small in diameter, Further, the diameter of the mounting hole is larger than the small diameter part and smaller than the large diameter part. After fitting the rod that attaches to the tip of the band onto the mounting rod, insert the large diameter part at the tip of the mounting part. is press-fitted into the mounting hole.

[0014]

[Effect]

In this device configured as described above, the outer diameter of the head is larger than the inner diameter of the mounting hole. Because it is large, it will not come out easily after being press-fitted, making it suitable for carrying with ordinary watches. It is durable enough for use. Also, attaching the rod that attaches to the tip of the band to the mounting rod, and installing the rod into the mounting hole. The buckle body is made of synthetic resin material, so we take advantage of its flexibility to attach the buckle. This can be easily done by widening both ends of the main body.

[0015]

【Example】

Next, this invention will be explained based on the drawings. FIG. 1 is an exploded perspective view showing one embodiment of the buckle structure according to this invention. Figure 2 shows how to assemble the buckle; Figure 2 is a plan view before assembly, and Figure 3 is a sectional view after assembly. It is. A U-shaped buckle body 1 made of synthetic resin has a mounting hole 1a at one end. , and a mounting rod 1b is provided at the other end. At the end of the mounting rod 1b, there is a small diameter part 1c, and further beyond that, there is a small diameter part 1c that reaches the tip. A larger diameter portion 1d is provided.

[0016] The inner diameter of the mounting hole 1a is smaller than the outer diameter of the mounting rod 1b and the outer diameter of the large diameter portion 1d. A band 2 has a hollow portion 2a at its tip. 3 is for inserting into the hole (not shown) in band 2 to connect the band and the buckle body. It is a diagonal rod and has a loop-shaped attachment part 3a at one end.

[0017] In order to attach this band 2 and the attachment rod 3 to the buckle body 1, it is necessary to attach it to the buckle body 1. Taking advantage of the flexibility of the buckle body 1, spread the ends of the buckle body 1 on both sides, and attach the mounting rod 1. The hollow part 2a of the band 2 is fitted around the band 2, and the large diameter part 1d is inserted into the slit 2 at the tip of the band. When it reaches position b, insert the mounting part 3a of the attachment rod 3 into the slit 2b and remove the attachment rod. 1b into the mounting portion 3a of the attached rod 3 and the hollow portion 2a. Next, move the large diameter part 1d at the tip of the mounting rod 1b to the position of the mounting hole 1a, and By pressing the tip of the main body 1 from the outside, the large diameter portion 1d is press-fitted into the mounting hole 1a. installation is completed.

[0018] At this time, in order to move the large diameter part at the tip of the mounting rod to the position of the mounting hole, , all you have to do is move the mounting rod on the same plane as the buckle body. Since there is no need to apply twisting force to the rod, it can be done smoothly and easily. In other words, with conventional buckle bodies and mounting rods that are separate, the installation After fitting the rod that attaches to the tip of the band onto the rod, do not insert the mounting rod into the mounting hole of the buckle body. However, finding the location of the mounting holes required skill and a lot of work time. It was important.

[0019]

[Effect of the idea]

As described above, according to the buckle structure according to this invention, the buckle body and the mounting rod are made of synthetic resin. It can be made in one piece from fatty materials, reducing costs. Furthermore, since it is made in one piece, it takes advantage of the flexibility of the synthetic resin material to combine with the band. The attaching rod can be easily attached to the buckle body. In addition, the mounting rod is a single rod with no seams in the middle, so it is a little thin. However, sufficient strength can be obtained.

[0020] Moreover, the tip of the mounting rod is press-fitted into the mounting hole provided in the buckle body, and the mounting rod Since the end of the mounting rod is held, even if force is applied to the middle of the mounting rod, it will not come off easily. There is no such thing as

[0021] In addition, to attach the band, fit the rod that attaches to the tip of the band onto the mounting rod. Then, with the buckle body open, slide the mounting rod and insert the large diameter part into the mounting hole. It is only necessary to press fit into the There is no way to give it a shape.

[0022] Furthermore, the buckle of this invention has a mounting rod that protrudes diagonally from the buckle body before assembly. This makes it easy to attach the band and the attached rod to the mounting rod. On the other hand, when installing the mounting rod into the mounting hole of the buckle body, place it on a flat plate and attach it to both sides of the buckle body. By moving the mounting rod with the end slightly open, make sure that the tip of the mounting rod is It can be easily moved to the mounting hole position.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the buckle of this invention.

FIG. 2 is a plan view of the buckle of this invention before assembly.

FIG. 3 is a sectional view of the buckle of this invention after assembly.

FIG. 4 is an exploded perspective view of a conventional buckle.

5 is a partially cutaway plan view of the buckle shown in FIG. 5 in an assembled state; FIG.

FIG. 6 is an exploded perspective view of another conventional buckle.

7 is a perspective view showing a state in which the attachment rods of the buckle shown in FIG. 6 are connected; FIG.

FIG. 8 is an enlarged view of a connecting portion of a mounting rod of a conventional buckle.

[Explanation of symbols]

1 Buckle body 1a Mounting hole 1b Mounting rod 1c Small diameter part 1d Large diameter part 2 band 2a Hollow part 3 stick 3a Mounting part

Claims (1)

[Scope of utility model registration request] Claim 1: A substantially U-shaped buckle body made of a synthetic resin material has one mounting hole near one end and one mounting rod facing inward near the other end on both sides. , the tip of the mounting rod is provided with a large-diameter portion that becomes small in diameter toward the tip, and the inner diameter of the mounting hole is larger than the tip of the mounting rod and smaller than the large-diameter portion; In a watch band buckle in which the mounting rod can be inserted into a hollow portion at the tip of the band and a loop-shaped mounting portion of the attached rod, the mounting rod is configured to have a length longer than the distance between the ends of both sides of the buckle body. The mounting rod is attached so as to protrude diagonally from the buckle main body so that a gap is usually created between the mounting hole of the buckle main body and the tip of the mounting rod. When both ends of the buckle are slightly opened and the mounting rod is pressed toward the buckle body, the tip of the mounting rod moves to the position of the mounting hole in the buckle body, and the tip of the buckle body is further pressed from the outside. A buckle structure for a band, characterized in that the tip of the mounting rod is press-fitted into the mounting hole.