WO1999047016A1

WO1999047016A1 - Block connecting structure and band-shaped ornament

Info

Publication number: WO1999047016A1
Application number: PCT/JP1999/001328
Authority: WO
Inventors: Shirou Ujiie
Original assignee: Citizen Watch Co., Ltd.
Priority date: 1998-03-17
Filing date: 1999-03-17
Publication date: 1999-09-23
Also published as: TW425272B; KR20010012609A; JPH11262403A; EP1018308A1; CN1258204A; EP1018308A4

Abstract

A block connecting structure comprising blocks each of which have a center connecting part (13) with holes (12) and outside connecting parts (11) with first holes (14) and second holes (15) larger in diameter than the first holes and pins (20) for connecting these blocks to each other, the first holes (14) extending into an outside connecting part to communicate coaxially with the second holes (15), the pin comprising a shaft part (24) engaged with the hole (12), a pressing part (25) larger in diameter than the shaft part and pressed into the second hole, and a neck part (21) formed into an inclined surface between the shaft part and the pressing part, and the shaft part being engaged with the holes (12) and the pressing part being pressed into the second holes so as to connect adjacent blocks to each other.

Description

Description Linkage structure of pieces and belt-shaped accessories

The present invention relates to a pin-piece connecting structure and a band-shaped ornament, and more particularly to a pin-piece connecting structure having a feature in a connecting portion between a piece and a pin. Background art

2. Description of the Related Art Conventionally, there has been known a technique of connecting a watch band using a piece and a pin in order to form a connection. FIG. 15 shows a part of a conventional watch band, and a pin is a single-lett bin 53 with a single-lettered end. The side piece 51 and the knurled bin 53 are inserted into the middle piece 51a, the connecting piece 51b, and the connecting hole 52 of the side piece 51. The knurled portion 54 is pressed against the hole wall of the connection hole 52 and fixed.

However, the pressure contact between the hole wall of the connection hole 52 and the knurled portion 54 has a problem that the pressure contact is loosened due to wear due to rotation during use and the knurled bin 53 is often detached from the connection hole 52.

In the band shown in Fig. 16, the connecting pins 61 with knurls 61a and 61b at both ends are connected with the intermediate piece 62b and the side pieces 62a, which are arranged in parallel with the connecting piece 63 between them. There is also known a technique of screwing and connecting with a side member 62c and attaching a decorative member 64 to the outside of the side pieces 62a and 62c with a screw 65.

However, the connection of the side pieces 62a, 62c with the intermediate piece 62b and the connecting piece 63 sandwiched between the knurls 61a, 6lb and the connection holes exclusively engraved on the connection pins 61 The friction between them causes the watch band to be loosened due to wear and the like, often causing the connecting pin 61 to separate from the side pieces 62a and 62c and disassembling the watch band. There is.

In the technique of forming a single-lett on a pin, as in the above-mentioned conventional technique, the inconvenience that the fixed portion is worn due to the mobility of the pin and the connection between the pin and the piece is disconnected is lost. It could not be eliminated.

In addition, very precise machining is required between the piece and the pin, and the number of parts increases.

An object of the present invention is to provide a pin / piece coupling structure with an increased connection strength between the pin and the piece.

Another object of the present invention is to provide a band-shaped accessory having a pin-piece connection structure in which the connection strength between the pin and the piece is increased by a simple configuration without increasing the number of parts. Disclosure of the invention

The connecting structure of a piece according to the present invention includes: a piece having a central connecting part protruding from a central part to one side; a pair of outer connecting parts protruding from both sides to the other; a first hole formed in the central connecting part; A second hole formed inwardly of the outer connection portion and having a diameter equal to that of the first hole and a second hole formed in an outer side of the outer connection portion and having a diameter larger than that of the second hole; A third hole concentrically communicating with the first piece, a pair of pins connecting the adjacent pieces, and each pin has a shaft engaging with the first hole and the second hole; A press-fit portion having a large diameter and pressed into the second and third holes, and a neck formed on the slope between the shaft and the press-fit portion. The shaft is engaged with the first hole. Adjacent pieces are connected by press-fitting the press-fit portion into the second hole.

The neck tapers toward the press fit.

The neck may taper toward the shaft.

According to another aspect of the present invention, an inner piece, a pair of outer pieces on both sides of the inner piece, a first hole formed through the inner piece, and an opening formed inside each outer piece. A second hole having the same diameter as the first hole, a third hole formed in the outer piece and having a smaller diameter than the second hole and communicating concentrically with the second hole, and a pin connecting the inner and outer pieces. The pin is formed on the inclined surface between the shaft and the press-fit portion, the shaft being engaged with the first hole and the second hole, the press-fit portion having a smaller diameter than the shaft, and being pressed into the third hole. The inner and outer pieces are connected by engaging the shaft with the first hole and pressing the press-fit part into the third hole. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a partially cutaway plan view showing a first embodiment of the present invention, FIG. 2 is a plan view of a pin, FIG. 3 is a plan view showing another example of a pin, and FIG. FIG. 5 is a cross-sectional view showing the third embodiment, FIG. 6 is a plan view of the pin in the third embodiment, FIG. 7 is a plan view showing the connection between the bridge and one end of the pin, FIG. Is a plan view showing a state in which two pins are connected to both pieces, FIG. 9 is an explanatory view showing a first wall portion of the piece, FIG. 10 is a sectional view showing another example of the piece, and FIG. 11 is a sectional view showing another example of the piece. FIGS. 12 to 14 are partial plan views showing examples of a watch band, and FIGS. 15 and 16 are cross-sectional views showing a conventional example. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 3 show a first embodiment according to the present invention. FIG. 1 is a partially cutaway plan view showing a state in which a pin and a piece are connected, FIG. 2 is a plan view of a pin, and FIG. It is a top view showing other examples of a pin.

The embodiment shown in FIGS. 1 to 3 shows the connection between the arm piece 10 and the pin 20. As shown in FIG. 1, the piece 10 has a U-shape and the longitudinal direction of the band. And a central connecting portion 13 protruding from the center of the Y-shape to the opposite side. The central connecting portion 13 is arranged inside the outer connecting portion 11 of the piece 10 and connected by pins 20.

An inner first hole 14 is formed in the outer connecting portion 11 of the piece 10, and a second hole 15 having a larger diameter than the hole 14 is formed on the outer side. In addition, a pair of holes 12 having the same diameter as the first hole are formed at both ends of the central connecting portion 13 so as to be opposed to the first holes 14 of the adjacent piece.

As shown in FIG. 2, the pin 20 mainly includes a shaft portion 24, a press-fit portion 25 having a larger diameter than the shaft portion 24, and a neck portion 21. The neck portion 21 is formed between the shaft portion 24 and the press-fit portion 25, and is a taper tapering toward the press-fit portion. The distal end side of the shaft portion 24 is formed as a slant angle portion 26 so as to be inclined and easily press-fitted.

The diameter of the shaft part 24 is formed in the large diameter part 24 c near the neck part 21, and the tip of the neck part 21 Has a smaller diameter than the shaft portion 24 described above. The shaft portion 24 is rotatably inserted into the hole 12, and the press-fit portion 25 has a diameter that can be press-fitted into the hole 15.

It is preferable that the material of the pin 20 of the present example is a material having a hardness equal to or higher than the hardness of the piece 10. As described above, the positioning and insertion into the holes 14 and 12 can be facilitated by the inclined angle portion 26 on the end face side of the shaft portion 24.

As shown in FIG. 3, the length of the pin 20 of the present example can adopt various dimensions in relation to the piece 10.

In this example, for example, in the pin 20 of FIG. 3, the press-fit portion 25 has a length of 2.0 mm and a diameter of 1.1 mm. The large-diameter portion 24c near the neck portion 21 of the shaft portion 24 is formed to be 1.0 mm, and the tip side is formed to be 0.8 mm. The neck 21 is 0.7 mm on the press-fitting part 25 side. In this example, the angle of inclination to the neck 21 is 30 degrees as shown in FIG.

In this example, the length of the neck 21 and the large-diameter portion 24c is 0.7 mm. These dimensions can be set in various ways depending on the shape and type of the watch band, the type, and the relationship between the piece 10 and the pin 20.

The pin 20 and the piece 10 are connected by inserting the shaft 24 of the pin 20 into the first hole 14 and the second hole 15 of the piece 10 and the hole 12 of the adjacent piece. Then, press-fit the press-fitting part 25 to connect. In other words, the press-fitting portion 25 is press-fitted in a normal press-fitting state. However, when the press-fitting is further performed, the press-fitting portion 25 comes into contact with the end wall of the first hole 14 and the press-fitting portion 2 is pressed. 5 is crushed and spread and acts to expand the second hole 15 and is press-fitted. Then, when further press-fitting is performed, the press-fitting portion 25 is crushed and presses the end wall of the first hole 14.

At this time, since the neck 21 having a smaller diameter than the shaft 24 is formed between the shaft 24 of the pin 20 and the press-fit portion 25, the first portion pressed by the press-fit 25 is formed. The wall portion of the hole 14 enters the neck 21 side, and the wall deformed by press-fitting is allowed to escape to the neck 21. That is, the press-fitting portion 25 is crushed and becomes large, and a wedge-shaped section 17 shown in FIG. 1 is formed at the neck 21 between the press-fitting portion 25 and the shaft portion 24. It is a stopper that prevents pin 20 from coming off from 10.

The shape of the piece shown in FIG. 4 is different from the example of FIG. 1 described above. So figure In Fig. 1, a watch band can be constructed by connecting the same pieces with pins, but in Fig. 4, multiple pieces of pieces are used.

In the piece 10 shown in FIG. 4, the first hole 14 has a diameter of 1.0 mm, which is the same as the diameter of the shaft portion 24, and the second hole 15 has a relationship with the press-fit amount of the press-fit portion 25. And the diameter of the press-fit portion 25 is 1.1 mm.

5 to 9 show a third embodiment. FIG. 5 is an explanatory view showing a connection state between the pin and the piece in FIG. 6, FIG. 6 is a plan view of the pin, and FIG. FIG. 8 is a plan view showing a connection with one end, FIG. 8 is a plan view showing a state where two pins are connected to both pieces, and FIG. 9 is an explanatory diagram showing a first wall portion of the piece. 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 example, a pair of outer pieces 10a on both sides are connected by pins 20a, and the inner pieces 18 are connected by the pins 20a. In this example, a first hole 14 and a second hole 15 are formed in the outer piece 10a, and a hole 12 is formed in the inner piece 18. The relationship between the dimensions such as the diameter and length of the first hole 14 and the second hole 15 is the same as in the above-described embodiment.

In this example, shafts 24a are formed at both ends of the pin 20a in order to connect the outer pieces 10a to both ends of the pin 20, and the neck is connected to the shaft 24a. 21 a and a press-fit portion 25 a are formed. The dimensions of the pin 2 0 a, for example, as shown in Figure 6, the shank 2 4 ₃ and 1 1 mm, the press-fitting part 2 5 a;. And I 2 2 mm.. Also in this example, the neck 21a is formed to be inclined, but it is also possible to form it by a step.

Then press the pin 20a into the outer piece 10a. At this time, as shown in Fig. 5, the outer piece 10a located at the lower side in the figure is fixed, and a pin 20a is pressed into the upper and lower outer pieces 10a by applying force from above. . When the pin 20a is press-fitted into the outer piece 10a in this manner, the press-fit portion 25a of the pin 20a is formed by the first hole 14 and the second hole 15 of the outer piece 10a. After the contact at the end of the pin, the portion shown by the dashed line in FIG. In FIG. 9, the portion shown by the chain line in FIG. These operations are the same as those in the above embodiment. FIG. 10 is an explanatory sectional view showing another example of the piece. As described above, 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 20a 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. Instead, it can be appropriately changed according to the shape of the press-fit portion of the pin 20a. FIG. 11 shows a pin in the fourth embodiment. The neck 21 in each of the above embodiments tapers toward the large-diameter press-fit portion, whereas the neck 21 b in the present embodiment tapers toward the shaft 24a.

Since the neck 21a in the previous example is tapered in a direction that allows the outer piece 10a to come off, the neck 21a may come off when a strong force is applied to the piece.

On the other hand, in the present embodiment, the neck is inclined in a direction to prevent the pieces from being detached, so that the pieces do not come off. The other structure and operation are the same as those of the above embodiments.

As shown in FIGS. 12 to 14, the watch band is formed by connecting the external shapes of various pieces by pins, and the external shapes of these pieces can be arbitrary. Industrial applicability

Since the present invention is configured as described above, a wedge-shaped section is formed at the neck portion, and a stopper for preventing the pin from coming off from the bridge is formed at this portion. This eliminates the need for a single-lett process at the end of the pin, and with a simple configuration, the pin and the piece can be securely connected to each other, thereby preventing the pin from falling off the piece. .

Claims

The scope of the claims

1. A piece having a central connecting portion projecting to one side from the central portion, and a pair of outer connecting portions projecting to the other side from both sides;

A first hole formed in the central connecting portion,

A second hole formed to open inward of each outer connection portion and having the same diameter as the first hole; a second hole formed to open outside of the outer connection portion and having a larger diameter than the second hole; A third hole concentrically communicating with the hole,

Consists of a pair of pins connecting adjacent pieces and

Each pin has a shaft portion engaged with the first hole and the second hole, a press-fit portion having a diameter larger than the shaft portion and press-fitted into the second hole and the third hole, a shaft portion and a press-fit portion. Between the neck formed on the slope between

A piece connecting structure for connecting adjacent pieces by engaging a shaft portion with a first hole and press-fitting a press-fit portion into a second hole.

2. The connecting structure according to claim 1, wherein the neck portion is tapered toward the press-fitting portion.

3. The connection structure according to claim 1, wherein the neck portion is tapered toward the shaft portion.

4. A piece having a central connecting portion protruding from the center to one side, and a pair of outer connecting portions protruding from both sides to the other;

A first hole formed in the central connecting portion,

Consists of a pair of pins connecting adjacent pieces and

A belt-shaped accessory which connects a number of adjacent pieces by engaging a shaft portion with a first hole and press-fitting a press-fit portion into a second hole.

5. Inside piece

A pair of outer pieces on both sides of the inner piece,

A first hole formed through the inner piece,

A second hole formed in the outer piece inwardly and having the same diameter as the first hole; and a third hole formed in the outer piece and having a smaller diameter than the second hole and communicating concentrically with the second hole. And a pin connecting the inner and outer pieces,

The pin is formed on a shaft engaging with the first hole and the second hole, a press-fit portion having a smaller diameter than the shaft and press-fit into the third hole, and a slope formed between the shaft and the press-fit portion. A connecting portion for connecting the inner and outer pieces by engaging the shaft portion with the first hole and press-fitting the press-fit portion into the third hole.

6. The connection structure according to claim 5, wherein the neck portion is tapered toward the shaft portion.

7. The connecting structure according to claim 5, wherein the neck portion is tapered toward the press-fitting portion.

8. The inner piece and

A pair of outer pieces on both sides of the inner piece,

A first hole formed through the inner piece,

The pin is formed on a shaft engaging with the first hole and the second hole, a press-fit portion having a smaller diameter than the shaft and press-fit into the third hole, and a slope formed between the shaft and the press-fit portion. A belt-shaped accessory comprising a plurality of inner and outer pieces connected by engaging a shaft portion with a first hole and press-fitting a press-fit portion into a third hole. Claims of amendment

[16.08.99. Aug. 19, 1999 Accepted by the International Bureau: Scope of claims 1, 4, 5, and 8 at the time of filing of the application was caught; The range is unchanged. (2 pages)]

A first hole formed in the central connecting portion,

A second hole formed inwardly of each outer connection portion and having the same diameter as the first hole; and a second hole formed outwardly of the outer connection portion and having a second hole having a large diameter. A third hole concentrically communicating with the hole,

Consists of a pair of pins connecting adjacent pieces and

Each pin has a shaft portion engaged with the first hole and the second hole, a press-fit portion larger in diameter than the shaft portion and press-fitted into the second hole and the third hole, a 轴 portion and a press-fit portion. And a neck formed on the slope at a portion corresponding to the second hole,

A first hole formed in the central connecting portion,

Consists of a pair of pins connecting adjacent pieces and

Each pin has a shaft portion engaged with the first hole and the second hole, a press-fit portion having a diameter larger than the shaft portion and press-fitted into the second hole and the third hole, a shaft portion and a press-fit portion. And a neck formed on the slope at a portion corresponding to the second hole,

A belt-shaped accessory that connects a number of adjacent pieces by engaging a portion with a first hole and press-fitting a press-fit portion into a second hole.用紙 Correct paper (Article 19 of the Convention)

5. Inside piece

A pair of outer pieces on both sides of the inner piece,

A first hole formed through the inner piece,

A second hole formed to be open inward of each outer piece and having the same diameter as the first hole,

A third hole formed in the outer piece and having a smaller diameter than the second hole and communicating concentrically with the second hole, and a pin connecting the inner and outer pieces,

The pin is a pin portion that engages with the first hole and the second hole, a press-fit portion that is smaller in diameter than the shaft portion and is press-fit into the third hole, and a second hole between the shaft portion and the press-fit portion. And a neck formed on an inclined surface at a portion corresponding to the shaft, wherein the shaft portion is engaged with the first hole and the press-fit portion is press-fitted into the third hole to connect the inner and outer pieces. The connecting structure of the pieces.

8. The inner piece and

A pair of outer pieces on both sides of the inner piece,

A first hole formed through the inner piece,

A pin is engaged with the first hole and the second hole, a pin portion having a smaller diameter than the shaft portion and press-fitted into the third hole, and a second hole between the shaft portion and the press-fit portion. And a neck formed on the slope at the part corresponding to

A belt-shaped accessory that connects a number of inner and outer pieces by engaging a shaft portion with a first hole and press-fitting a press-fit portion into a third hole.

Corrected paper (Article 19 of the Convention)