JPH11262403A - Connecting structure and connection between pin and barrel and watchband - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting structure and a connecting method between a pin and a barrel and a watchband provided with the connecting structure. SOLUTION: A connecting structure is provided with a first connecting part 14 constructed of a recess part or a hole arranged in a barrel 10, a second connecting part 15 connected to the first connecting part 14 and formed on a pin 20 press-in side, a first press-in part 24 formed in the pin 20, a second press-in part 25 formed to the first press-in part 24 via the first press-in part 24 and a neck part 21 whose diameter is smaller than that of the first press-in part 24. When the first press-in part 24 and the second press-in part 25 of the pin 20 are forcibly fitted in the first connecting part 14 and the second connecting part 15 in the barrel 10, the pin 20 and the barrel 10 are connected together. The first connecting part 14 and the first press-in part 24 are provided with approximately equal diameters, while the diameter of the first connecting part 14 is formed to be smaller than that of the second connecting part 15 and the diameter of the first press-in part 24 is formed to be smaller than the second press-in part 25, so that the wall of the first connecting part 14 pressed by the second press-in part 25 is relieved to the neck part 21 side in force-fitting between the pin 20 and the barrel 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin-piece connecting structure and a connecting method, and a watch band, and more particularly to a pin-piece connecting structure and a connecting method having a characteristic of a connecting portion between a pin and a watch band.

[0002]

2. Description of the Related Art Conventionally, in order to connect and form a watch band,
2. Description of the Related Art A technique of connecting a side piece and a pin using a pin is known. A knurled pin having a knurled end is used for the pin. The knurled pins 53 are driven into the connection holes 52 of the side pieces 51 communicating with the intermediate middle piece 51a and the connecting piece 51b, as shown in FIG. The knurl portion 54 is pressed against and fixed.

However, the pressure contact between the hole wall of the connecting hole 52 and the knurled portion 54 is loosened due to abrasion due to rotation during use, and the knurled pin 53 is often connected to the connecting hole 5.
There is a problem of withdrawing from 2.

As shown in FIG. 15, connecting pins 61 having knurls 61a and 61b at both ends are connected to an intermediate piece 62b.
Pieces 62a, 62 arranged side by side with the connecting piece 63
There is also known a technique in which a screw 65 is stopped by attaching a decorative part 64 to the outside of the side pieces 62a, 62c by inserting and connecting between the side pieces 62a, 62c.

However, the intermediate piece 62b and the connecting piece 6
The connection of the side pieces 62a, 62c with the 3 interposed therebetween is held solely by friction between the knurls 61a, 61b engraved on the connecting pin 61 and the connecting holes, so that looseness occurs due to wear due to use. , Often connecting pins 61
However, there is a problem that the watch band is disassembled by extracting from the side pieces 62a and 62c.

In order to solve this problem, concave ring portions are provided at both ends of the connecting pin, and the concave ring portion is pinched and stopped by a washer having a stop groove outside the side piece, and the washer and the connecting pin are provided. The outer protruding end of the washer is covered with an outer cover having a ring shape and a side plate and formed as a decorative part, and the outer cover and the side piece are screw-connected to prevent the connection pin from being pulled out. Techniques for doing so have been proposed.

[0007]

In the techniques of using an outer cover or knurling a pin as in the above-mentioned prior art, any of these techniques is a technique in which a knurled portion is pressed against a hole wall of a connection hole and fixed. However, the problem that the fixed portion is worn due to the movement of the pin and the connection between the pin and the piece is disconnected cannot be solved. In addition, there is also a disadvantage that very accurate processing is required between the piece and the pin, and the number of parts is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pin / piece connecting structure and a connecting method with an enhanced connection strength between the pin and the piece, and to provide a watch band having the connecting structure. It is another object of the present invention to provide a pin-piece connecting structure and a connecting method, and a watch band having a connecting structure, in which the connecting strength between the pin and the piece is increased by a simple configuration without increasing the number of parts.

[0009]

According to a first aspect of the present invention, there is provided a pin-piece connecting structure, comprising: a first connecting portion comprising a concave portion or a hole provided in the piece; and a pin connected to the first connecting portion. A second connecting portion formed on the side where the first press-fit portion is formed, a first press-fit portion formed on the pin, and a second press-fit formed via the first press-fit portion and a neck portion having a smaller diameter than the first press-fit portion. A pin and piece connecting structure for press-fitting and connecting the first press-fitting portion and the second press-fitting portion of the pin to the first connecting portion and the second connecting portion of the piece, wherein the first connecting portion and The first press-fitting portion has substantially the same diameter, the diameter of the first connecting portion is formed smaller than the diameter of the second connecting portion, and the diameter of the first press-fitting portion is formed smaller than the second press-fitting portion. When the pin and the piece are press-fitted, the wall of the first connecting portion pressed by the second press-fitting portion is released to the neck side. By, it is solved.

According to a fourth aspect of the present invention, there is provided a watch band, wherein the first band comprises a concave portion or a hole provided in a piece.
A connecting portion, a second connecting portion formed on a side where the pin is continuously pressed into the first connecting portion, a first press-fit portion formed on the pin, the first press-fit portion, and the first press-fit portion. A second press-fit portion formed via a neck portion having a smaller diameter than the portion, and press-fits and connects the first press-fit portion and the second press-fit portion of the pin to the first connection portion and the second connection portion of the piece. The connection structure of the pin and the piece,
The first connection portion and the first press-fit portion have substantially the same diameter, the diameter of the first connection portion is formed smaller than the diameter of the second connection portion, and the diameter of the first press-fit portion is the second press-fit portion. A watch band having a connecting structure formed smaller and configured to release the wall of the first connecting portion that is pressed and deformed by the second press-fitting portion to the neck side when the pin and the piece are press-fitted;
Is solved.

[0011] Further, according to the fifth aspect of the present invention, a first connecting portion formed of a concave portion or a hole provided in a piece, and a diameter larger than the first connecting portion is provided in the first connecting portion. A second connecting portion formed on the side where the pin is continuously press-fitted; a first press-fitting portion press-fitted into the first connecting portion; a first press-fitting portion and a neck portion smaller in diameter than the first press-fitting portion. A pin having a second press-fit portion having a larger diameter than the first press-fit portion formed through the first press-fit portion. The first press-fit portion and the second press-fit portion of the pin are provided at the first connection portion and the second connection portion of the piece. A method of connecting a pin and a piece by press-fitting and connecting the first press-fitting part to the first press-fitting part.
The first press-fitting portion is pressed into the connecting portion, the second press-fitting portion is press-fitted into the second connecting portion, and then the end of the first connecting portion is pressed by the second press-fitting portion. This problem is solved by press-fitting the wall of the connecting portion so as to escape to the neck portion between the first press-fit portion and the second press-fit portion of the pin.

As described above, the first connecting portion and the first press-fitting portion have substantially the same diameter, and the diameter of the first connecting portion is smaller than the diameter of the second connecting portion. Is formed to have a diameter smaller than that of the second press-fitting portion, and when the pin and the piece are press-fitted, the wall of the first connecting portion pressed by the second press-fitting portion is made to escape to the neck side, so that the first
The connection portion and the first press-fit portion, and the second connection portion and the second press-fit portion,
It is press-fitted in the normal press-fit state, but if you press further,
The second press-fitting portion is in contact with the end wall of the first connecting portion, and the second press-fitting portion is crushed and acts to expand the second connecting portion, and is press-fitted. When further press-fitting is performed, the second press-fitting portion is crushed and presses the end wall of the first connecting portion. At this time, since a neck portion having a smaller diameter than the first press-fit portion is formed between the first press-fit portion and the second press-fit portion of the pin, the wall portion of the first connecting portion pressed by the second press-fit portion is It is possible to adopt a configuration in which a wall that enters the neck and is deformed by so-called press-fitting is released to the neck. That is, an umbrella-like portion is formed at the neck portion, and a stopper for preventing the pin from coming off from the piece is formed at the umbrella-like portion. Therefore, knurling or the like is not required at the end of the pin.

[0013] The neck portion can be formed to have a step or an incline from the first press-fit portion to the inside of the second press-fit portion so as to have a small diameter, and the number of steps may be plural. Further, the first connecting portion can be formed as a through hole.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention.

1 to 13 show an embodiment according to the present invention. FIG. 1 is a partially cutaway plan view showing a state where a pin and a piece are connected, FIG. 2 is a plan view of the pin, and FIG. FIG. 4 is a plan view of a pin showing another example, and FIG. 4 is a sectional plan view of a piece connected to the pin of FIG. 11 to 13 are partial plan views showing examples of the watch band.

The watch band B is formed by connecting the outer shapes of various pieces 10 with pins 20 as shown in FIG. 11 to FIG. Is possible. Therefore, in addition to FIGS. 11 to 13, there are various shapes.

The embodiment shown in FIGS. 1 to 4 shows the connection between the pin 10 and the pin 20 for the band.
As shown in the figure, the piece 10 has two U-shaped end portions 11 and 12,
At the center of the U-shape, there are formed both ends 11 and 12 and an extension 13 extending to the opposite side. It is constructed by connecting.

Holes are formed at both ends 11 and 12 of the piece 10 from both inside and outside ends to form a hole as a first connecting portion 14 inside and a hole as a second connecting portion 15 outside. That is, the second connecting portion 15 is formed on the side where the pin 20 is first pressed into the first connecting portion 14.

As shown in FIG. 2, the pin 20 of this embodiment has a first press-fitting portion 24, a second press-fitting portion 25, and a neck 21 as main components. It is formed between the second press-fit portion 25 and the second press-fit portion 25. First press-fit section 24
Is formed in a shape that is inclined as the inclined angle portion 26 and is easily press-fitted.

The diameter of the first press-fitting portion 24 is large near the neck portion 21, and the neck portion 21 is formed continuously with the first press-fitting portion 24. This neck portion 21 is connected to the first press-fitting portion 2.
The diameter is smaller than 4. In addition, the second
The press-fit portion 25 is formed, and the second press-fit portion 25 is formed to be larger than the diameter of the first press-fit portion 24.

As the material of the pin 20 of this embodiment, various known materials can be used, but it is preferable to use a material having a hardness equal to or higher than the hardness (hardness) of the piece 10. As described above, it is possible to facilitate positioning and press-fitting to the first connecting portion 14 by the inclined angle portion 26 on the end face side of the first press-fitting portion 24.

The first connecting portion 14 formed on the piece 10
Is formed so as to have a diameter substantially equal to that of the first press-fitting portion 24 formed on the pin 20, and the diameter of the first connecting portion 14 is smaller than the diameter of the second connecting portion 15. Similarly, the diameter of the first press-fit portion 24 of the pin 20 is
It is formed smaller than 5.

The pin 20 of the present embodiment is formed by increasing the length of the second press-fitting portion 25. As shown in FIGS. Can be adopted. In FIG. 4, the shape of the piece is different from that of the example of FIG. That is, in FIG. 1, a watch band can be formed by connecting the same pieces with pins, but in FIG. 4, a plurality of pieces are used as in the known art.

In the present embodiment, for example, in the pin 20 of FIG. 3, the second press-fit portion 25 has a length of 2.0 mm and a diameter of 1.1 mm. The first press-fit portion 24 is set at 1.0 m near the neck 21.
m and 0.8 mm on the tip side. The neck portion 21 is 0.7 mm on the second press-fitting portion 25 side,
The press-fit portion 25 is formed to be inclined from 1.0 mm. In this example, the angle of inclination to the neck 21 is 30 degrees as shown in FIG.

In this embodiment, the length of the neck 21 and the first press-fitting portion 24 near the neck 21 is 0.7 mm.
Correspondingly, in the piece 10 shown in FIG.
Is set to 1.0 mm, which is the same as the diameter of the first press-fitting portion 24, and the length of the second connecting portion 15 is set to 1.0 mm in relation to the press-fitting amount of the second press-fitting portion 25. The diameter is 1.1 mm, which is the same as the diameter of 25. These dimensions can be set in various ways depending on the shape and type of the watch band and the relationship between the piece 10 and the pin 20.

The connection between the pin 20 and the piece 10 is
The first press-fitting portion 24 and the second press-fitting portion 25 of the pin 20 are press-fitted and connected to the first connecting portion 14 and the second connecting portion 15 of the pin 20. That is, the first connecting portion 14 and the first press-fitting portion 24 and the second connecting portion 15 and the second press-fitting portion 25 are press-fitted in a normal press-fitting state.
It comes into contact with the end wall of the first connecting portion 14 and the second
The press-fit portion 25 is crushed and spread to act to spread the second connecting portion 15 and is press-fitted. Then, when further press-fitting, the second press-fitting portion 25 is crushed and presses the end wall of the first connecting portion 14.

At this time, the first press-fit portion 24 of the pin 20 and the second
Since the neck portion 21 having a smaller diameter than the first press-fit portion 24 is formed between the first press-fit portion 24 and the press-fit portion 25, the wall portion of the first connecting portion 14 pressed by the second press-fit portion 25 enters the neck portion 21 side. ,
The wall deformed by so-called press-fitting can be configured to escape to the neck 21. That is, the second press-fitting portion 25 is crushed and enlarged, and an umbrella-like portion is formed at the neck portion 21 between the second press-fitting portion 25 and the first press-fitting portion 24. A stopper is formed to prevent the pin 20 from coming off from 10.

FIGS. 5 to 9 show an embodiment of the connection between the pin and the piece of the pin standing structure. FIG. 5 is an explanatory view showing the connection state of the pin and the piece in FIG. 6, and FIG. 6 is a plan view of the pin. , FIG.
Is a plan view showing the connection between the piece and one end of the pin, FIG. 8 is a plan view showing a state where two pins are connected to the pieces on both sides, and FIG. 9 is an explanatory view showing the first wall portion of the piece. It is. In the present embodiment, parts different from the above embodiment will be mainly described, and the same members will be denoted by the same reference numerals and description thereof will be omitted.

In this embodiment, a pair of pieces 10 on both sides are connected by a pin 20, and the connecting piece 10 is connected to the pin 20. In this example, the first connecting portion 14 and the second connecting portion 15 are formed on the piece 10. The relationship of the dimensions such as the diameter and the length of the first connecting portion 14 and the second connecting portion 15 is the same as in the above-described embodiment.

In this embodiment, in order to connect the pieces 10 to both ends of the pin 20, first press-fit portions 24 are formed at both ends of the pin 20, and the neck portion 21 and the second press-fit portion are connected to the first press-fit portion 24. A press-fit portion 25 is formed. As shown in FIG. 6, the dimensions of the pin 20 are, for example, 1.1 mm for the first press-fit portion 24 and 1.22 mm for the second press-fit portion 25. Also in this example, the neck 21 is formed to be inclined, but it is also possible to form it with a step.

Then, the pin 20 is pressed into the piece 10. At this time, as shown in FIG. 5, the pin 10 positioned at the lower side in the figure is fixed, and a pin 20 is pressed into the upper and lower pieces 10 by applying a force from above. In this way, the piece 10
When the pin 20 is press-fitted into the second press-fitting portion 2 of the pin 20
5 abuts on the end portions of the first connecting portion 14 and the second connecting portion 15 of the piece 10 and then the portion shown by the dashed line is crushed,
In the second press-fitting portion 25, the portion press-fitted into the second connecting portion 15 expands, and at the same time, the portion shown by the chain line in FIG. 9 escapes into the neck portion 21 to form a portion like an umbrella. It is configured to prevent slippage.
These operations are the same as those of the above embodiment.

FIG. 10 is an explanatory cross-sectional view showing another example of the piece. As in this example, the bottom of the concave portion forming the connecting portion can be formed in a mountain shape. The number of concave portions, holes, and through-holes constituting the connecting portion in each of the above embodiments may be appropriately formed. In each of the above embodiments, the pin 20 is cylindrical, and the recess, hole, and through-hole are circular and elliptical in cross section. However, the recess, hole, and through-hole are not limited to these shapes. It is possible to appropriately change the shape of the pin 20 according to the shape of the press-fitting portion.
The connecting portion of 0 may be a rectangular concave portion, hole, or through hole.

[0033]

Since the present invention is constructed as described above, the second press-fitting portion comes into contact with the end wall of the first connecting portion, and the second press-fitting portion is crushed to disconnect the second connecting portion 15. The second press-fitting portion is crushed and presses the wall at the end of the first connecting portion when the press-fitting is performed while acting to spread the wire.

At this time, since a neck portion having a smaller diameter than the first press-fit portion is formed between the first press-fit portion and the second press-fit portion of the pin, the wall of the first connecting portion pressed by the second press-fit portion is formed. Can enter into the neck side, and the wall deformed by so-called press-fitting can escape to the neck. That is, an umbrella-like portion is formed at the neck portion, and a stopper for preventing the pin from coming off from the piece is formed at the umbrella-like portion. For this reason, knurling or the like is not required at the end of the pin, and the pin and the piece can be securely connected with a simple configuration, and the inconvenience of the pin falling off the piece can be prevented.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing a state in which a pin and a piece according to the present invention are connected.

FIG. 2 is a plan view of a pin.

FIG. 3 is a plan view of a pin showing another example.

FIG. 4 is a cross-sectional plan view of a piece connected to the pin of FIG. 3;

FIG. 5 is an explanatory diagram showing a connection state between a pin and a piece in FIG. 6;

FIG. 6 is a plan view of a pin showing still another example.

FIG. 7 is a plan view showing a connection between a piece and one end of a pin.

FIG. 8 is a plan view showing a state in which two pins are connected to pieces on both sides.

FIG. 9 is an explanatory view showing a first wall portion of a piece.

FIG. 10 is an explanatory sectional view showing another example of a piece.

FIG. 11 is a partial plan view showing an example of a watch band.

FIG. 12 is a partial plan view showing an example of a watch band.

FIG. 13 is a partial plan view showing an example of a watch band.

FIG. 14 is a sectional view showing a conventional example.

FIG. 15 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 piece 11, 12 Both ends 13 Extension part 14 1st connection part 15 2nd connection part 20 pin 21 neck part 24 1st press-fit part 25 2nd press-fit part 26 Inclined angle part

Claims (5)

[Claims] 1. A first connecting portion comprising a concave portion or a hole provided in a piece, a second connecting portion formed on a side into which a pin is press-fitted continuously to the first connecting portion, and a first connecting portion formed on the pin. A first press-fitting portion, and a second press-fitting portion formed through a neck portion having a smaller diameter than the first press-fitting portion, wherein the pin is attached to a first connecting portion and a second connecting portion of the piece. And a pin and piece connecting structure for press-fitting and connecting the first press-fitting portion and the second press-fitting portion, wherein the first connecting portion and the first press-fitting portion have substantially the same diameter, and the diameter of the first connecting portion. Is formed to be smaller than the diameter of the second connection part, the diameter of the first press-fit part is formed smaller than the second press-fit part, and the first connection part pressed by the second press-fit part when press-fitting the pin and the piece. A pin and a piece connecting structure, wherein a wall of the pin is released to the neck side. 2. The pin-piece coupling structure according to claim 1, wherein the neck portion is formed to have a small diameter by stepping or inclining from the first press-fit portion to the second press-fit portion. 3. The structure according to claim 1, wherein the first connecting portion is a through hole. 4. A first connecting portion comprising a concave portion or a hole provided in a piece, a second connecting portion formed on a side into which a pin is press-fitted continuously to the first connecting portion, and a first connecting portion formed on the pin. A first press-fitting portion, and a second press-fitting portion formed through a neck portion having a smaller diameter than the first press-fitting portion, wherein the pin is attached to a first connecting portion and a second connecting portion of the piece. And a pin and piece connecting structure for press-fitting and connecting the first press-fitting portion and the second press-fitting portion, wherein the first connecting portion and the first press-fitting portion have substantially the same diameter, and the diameter of the first connecting portion. Is formed smaller than the diameter of the second connecting portion, the first press-fit portion is formed smaller in diameter than the second press-fit portion, and when the pin and the piece are press-fitted, the second press-fit portion is pressed and deformed. (1) A watch band comprising a connecting structure configured to allow a wall of a connecting portion to escape toward the neck. 5. A first connecting portion comprising a concave portion or a hole provided in a piece, and a second connecting portion having a diameter larger than that of the first connecting portion and formed on a side where a pin is press-fitted continuously to the first connecting portion. A connection portion, a first press-fit portion press-fitted into the first connection portion, and a first press-fit portion having a larger diameter than the first press-fit portion formed through the first press-fit portion and a neck portion smaller in diameter than the first press-fit portion. A pin having two press-fitting portions, wherein the pin and the first press-fitting portion and the second press-fitting portion of the pin are press-fitted and connected to the first connecting portion and the second connecting portion of the piece. The first press-fitting part is the first
The first press-fitting portion is pressed into the connecting portion, the second press-fitting portion is press-fitted into the second connecting portion, and then the end of the first connecting portion is pressed by the second press-fitting portion. A method of connecting a pin and a piece, wherein the wall of the connecting portion is press-fitted so as to escape to a neck portion between the first press-fit portion and the second press-fit portion of the pin.