JP2003315747A - Temple folding joint and hinge of spectacle frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge which is used to couple temples of a spectacle frame so as to make the temples foldable, is attached to barrels of leaves in a manner as to keep washers without disengagement thereof and facilitates mounting of both leaves. <P>SOLUTION: After a tube 2 of a bushing 2 with the washer is fitted into the shaft hole of one of the leaf barrels meshing with each other, the front end of the tube projecting from the shaft hole is pushed to open to mold the washer 12. The washers 3 and 12 are tightly fitted and formed to both end faces 6a and 6b of the barrel 5. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge which is attached to both sides of a front portion of eyeglasses to connect a temple so that it can be folded.

[0002]

2. Description of the Related Art Eyeglasses are provided with vines on both sides of a front portion so that they can be folded. That is, both vines are opened when the glasses are worn on the face, and both folds are closed when the glasses are removed from the face. By the way, the hinge that connects the temples of the glasses is very small, and it takes a great burden to support a long temple. Therefore, the sliding surface is worn due to bending, the vine is loosened, and the glasses worn are misaligned, which impairs stability.

Particularly, in recent years, since a spectacle frame is preferably made of a material that is light and has excellent spring properties, a titanium material is often used as a material satisfying this requirement. In many cases, the hinge is also made of titanium, and the wear of the sliding surface is particularly remarkable in this titanium hinge. And with the titanium hinge, the sliding surface that has been cut is a fine uneven surface like a casting, that is, it is not a smooth surface, so creases are generated during the folding operation of the vine, and a smooth folding operation can be performed. Absent. That is, smooth sliding cannot be obtained.

Therefore, in the prior art, smooth sliding is provided by interposing a washer on the sliding surface of this small hinge,
Measures are taken to prevent wear. FIG. 6 is an external view showing a hinge of an eyeglass frame for folding a vine that has been conventionally used. As shown in the figure, the hinge is a butterfly piece.
(A) and (b) are connected by shaft screws (c) so that they can be bent.One of the butterfly pieces (b) has its joint surface (d) brazed to the end piece, and the other The joint surface (d) of the butterfly piece (a) is brazed to the vine. Therefore, the vine can be folded via the hinge.

FIG. 7 shows washers (e), (e) with two butterfly pieces (a),
The cross section which interposes on the sliding surface of (b) is shown. Then, the washer (e) is, as shown in FIG.
And a flange (g), with a screw hole in the center
(H) is provided. As shown in Fig. 7, the flange (g) of the washer (e) is attached by fitting it into the shaft hole (g) provided in the top (li) of the butterfly (a), and the disk is attached to the sliding surface. Due to the interposition of the portion (f), abrasion of the sliding surface is prevented.

A conventional hinge is a hinge piece having both tops (le) and (le)
In order to fit and engage the convex part of the butterfly piece (b) having the top (li) in the concave part of (a), the washer (e) is a flat washer composed only of a disk part , (B) cannot be assembled. That is, it is necessary to fit the brim portion (g) into the shaft hole (g) of the top (i) and attach the both washers (e) and (e).

The work of fitting the small washer (e) and (e) with the brim into the shaft hole (n) of the butterfly piece (b) is troublesome and
Attach the washer (e) and the top (i) with (e) attached to one of the butterfly pieces.
It is not easy to fit between (a) and (b) of both frames. That is, when the washers (e) and (e) are attached to the shaft holes, there is almost no clearance between the tops (e) and (e),
The washer (ho) and (ho) fall off the top (ri).

[0008]

As described above, the conventional hinge for folding the temple of the eyeglass frame has the above-mentioned problems. The problem to be solved by the present invention is this problem, and the washer is attached to the top of the butterfly piece so as not to come off.
(EN) Provided is a crane joint and a hinge which can easily assemble both butterfly pieces.

[0009]

The hinge of the spectacle frame according to the present invention comprises both butterfly pieces, and on the other hand, the washer is attached to the sliding surface of the butterfly piece, and the washer is not displaced. Of course, it is fixed so that it will not come off. Therefore, the washer of the present invention is a bush having a brim, and the brim of the bush is interposed on the sliding surface so as to function as a washer.

A bush having a washer at one end is fitted into the shaft hole of the top, and the other end protruding from the shaft hole is processed after the fitting to form a washer. That is, by separately molding, the washers are provided at both ends of the bush, and the washers are attached to both end surfaces of the top.

On the other hand, the folding operation of the temple of the spectacle frame is not necessarily limited to the case where the hinge is used, and it is also possible to directly form a joint piece at the temple end and connect it to the joint piece provided at the front portion. Therefore, in the present invention, it is possible to attach a bush with a washer to the top of this joint in the same manner as the hinge top. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an embodiment showing a bush 1 attached to the top of one butterfly piece. The bush 1 is composed of a cylinder 2 and a collar that functions as a washer 3, and the washer 3 is a cylinder 2
It is a disk with a large outer diameter formed at one end. The cylinder 2 has a through hole 4, and the cylinder 2 is attached to the top of one of the hinge pieces constituting the hinge and fitted into the shaft hole of the top.

FIG. 2 shows a state in which the bush 1 is fitted in the shaft hole of the top 5. As shown in the figure, the cylinder 2 fits in the shaft hole, but the washer 3 having a large outer diameter abuts the end surface 6a of the top 5, and the tip portion 7 of the cylinder 2 projects from the shaft hole. Therefore, the protruding tip portion 7 is processed to form a washer, and the tool 8 as shown in FIG.
Is pressed against the tip portion 7 of the cylinder 2. The tip of the tool 8 has a conical shape, and if the conical portion 9 is pressed into the cylindrical hole and is fitted therein, the cylindrical tip portion 7 is expanded and the tool 8 is further pressed to form a disk-shaped washer. To be done.

A flat surface 10 is formed around the conical portion 9 of the tool 8, and when the flat surface 10 is spread by the conical portion 9, the flat surface 10 hits and is pressed, and as a result, it is crushed into a washer. In this case, the C surface 11 or the R surface is formed at both ends of the shaft hole of the top 5 and at the corners with the end surfaces 6a and 6b. By forming the C surface 11 or the R surface, the tool 8
The washer formed by being pressed by is closely attached to the end surface 6b without leaving a gap between the washer and the end surface 6b.

Although FIG. 4 shows a state where the washer 12 is molded, the washers 3 and 12 are attached to both end surfaces 6a and 6b of the top 5. Here the tube tip 7
There are various other specific methods for expanding the washer 12 to form the washer 12, and the present invention is not limited thereto. For example, it is possible not only to press the tool 8 but also to press the tool 8 while rotating it, which is more preferable.

FIG. 5 shows a hinge cross section in which the butterfly piece of the top 5 having the bush 1 mounted in the shaft hole is assembled. In this way, the bush 1 is fixed to one of the tops 5, that is, it does not come off during the assembly work. The washers 3 and 12 of the bush 1 are the sliding surfaces 14 of the other butterfly piece,
If the butterfly piece bends due to the folding operation of the crane, smooth sliding occurs between the surfaces of the washers 3 and 12 and the top sliding surfaces 14 and 14 of the other butterfly pieces. To do.

The present invention includes not only the hinge described in the embodiment but also a joint in which a top is directly provided at the temple end. In the case of the joint piece, a bush with a washer is fitted in the shaft hole like the hinge piece, and the cylinder protruding from the shaft hole is pushed open to form the washer. That is, washers are formed in close contact with both end faces, and the joint piece is connected to the joint piece on the front portion side via a shaft screw. As described above, the joint and hinge of the spectacle frame according to the present invention have the bush with a washer fitted in the shaft hole of one of the tops, and the following effects can be obtained.

[0017]

In the joint and hinge of the eyeglass frame according to the present invention, since the bush with washer is attached to the shaft hole of one of the tops, the cylinder of the bush is fitted into the shaft hole and the washers are provided at both ends. It will not form and come off. Therefore, the joint and the hinge can be assembled smoothly, and the efficiency of the assembly work of the eyeglass frame can be improved. Then, as compared with the conventional case of handling a small washer, the workability is improved by fitting the cylinder of the bush into the shaft hole and molding the washer on the opposite side. A washer is placed on the sliding surface of the top to prevent abrasion of the sliding surface even if the joint or hinge bends as the fold operation of the vine is performed. The operation can be performed smoothly.

[Brief description of drawings]

FIG. 1 is a specific example of a bush attached to a hinge.

[Fig. 2] When the bush is attached to the shaft hole of the butterfly piece.

FIG. 3 is a tool for machining the tip of a cylinder protruding from the shaft hole of a butterfly piece.

FIG. 4 shows a case where a washer is processed at the tip of the cylinder with a tool.

FIG. 5 is a sectional view showing a part of the hinge of the present invention.

FIG. 6 A conventional hinge.

FIG. 7: Conventional hinge with washer.

FIG. 8 is a conventional washer.

[Explanation of symbols]

1 bush 2 tubes 3 washers 4 through holes 5 frames 6 end faces 7 Tip 8 tools 9 cone 10 flat surface 11 C side 12 washers 13 frames 14 Sliding surface

Claims (3)

[Claims] 1. A hinge for connecting a temple of an eyeglass frame so as to be able to be folded, and after a cylinder of a bush with a washer is fitted into a shaft hole of one of the butterfly piece pieces that mesh with each other, a cylinder tip protruding from the shaft hole. The washer is formed by pushing open the part, that is, the washer is formed in close contact with the end face of the frame at both ends of the cylinder fitted in the shaft hole, and it is assembled with other butterfly piece frame shaft screws. A foldable hinge for a spectacle frame. 2. C is provided at the shaft hole of the butterfly piece and the corner of the end face.
The temple folding hinge of the spectacle frame according to claim 1, wherein the surface or R surface is formed. 3. A joint for foldably connecting the temples of an eyeglass frame, wherein a cylinder of a bush with washer is fitted into the shaft hole of one of the butterfly pieces that mesh with each other, and then the cylinder tip protruding from the shaft hole. The washer is formed by pushing open the part, that is, the washer is formed in close contact with the end face of the frame at both ends of the cylinder fitted in the shaft hole, and it is assembled with other butterfly piece frame shaft screws. A foldable joint for eyeglass frames.