JPH075126U - Spiral joint structure for eyeglass frames - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a temple joint structure suitable for connecting thin and slim temples in a temple of an eyeglass frame without rattling of the temple. [Structure] A bearing having a cavity inside is fixed to an end piece, and a hole and a notch groove formed continuously with the hole are provided at the tip of the bearing so as to communicate with the cavity and formed at the tip of the cavity. A crane joint structure in which a shaft provided at the end of the temple is fitted into the bearing surface, and a coil spring is inserted in the cavity to apply a spring force to the shaft.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a temple joint structure for an eyeglass frame, which allows the temples to be foldably connected without using a conventional hinge.

[0002]

[Prior art]

 The vines of spectacle frames are generally connected via hinges and can be folded. The hinge is made by connecting both hinges so that they can be bent about an axis. One of the hinges is fixed to the armature brazed to the front frame, and the other is fixed to the crane. In the case of a resin frame, one of the above-mentioned butterfly pieces is embedded in the front frame, and the other butterfly piece is screwed to the crane.

By the way, when the vines are connected via the hinges, the number of foldings of the vines is unlimited, and therefore the sliding surface of the hinges wears and rattles. As a result, the vines also play loosely, and the worn glasses may be misaligned or even fall off the face. Since such wear of the hinge is unavoidable, people who use meganets sometimes prevent the rattling by tightening the screw as the shaft of the hinge. On the other hand, in the case of a crane connecting structure using a hinge, the work of assembling the crane is troublesome.

[0004] Each hinge piece of the hinge is brazed to the armor and the temple, and in that state, the both hinge pieces are combined and the shaft screw is inserted and screwed together. Poor performance, and each butterfly piece must be brazed correctly to the armor and vine. The work of positioning the butterfly piece is very troublesome, and if the brazing position is misaligned, the vine cannot be properly connected and cannot be folded properly. Further, in the joint structure using the hinge, the attachment portion of the hinge becomes large, often impairing the design of the eyeglass frame.

[0005]

[Problems to be solved by the present invention]

 As described above, the conventional crane joint structure has the above problems. The problems to be solved by the present invention are these problems, and provide a crane joint structure that is simple in structure and assembly and does not rattle due to wear.

[0006]

[Means for Solving the Problems]

 The vine joint structure of the present invention foldably connects the vine without using a conventional hinge. Therefore, the front frame is brazed with an armor as usual, and the bearing is fixed to the armor. A shaft formed at the tip of the temple is fitted to the tip of the bearing so that the temple can be folded. The bearing has a cylindrical shape, and has a built-in spring inside to apply a spring force to the shaft.

Here, not only a hole for connecting the vine is formed at the tip of the bearing, but also a notch groove is formed so that the vine can be folded. Since the crane swivels around an axis, the shape of the axis is a sphere or a cylinder. An embodiment according to the present invention will be described below in detail with reference to the drawings.

[0008]

【Example】

 FIG. 1 shows an eyeglass frame, which uses the crane connecting structure of the present invention. In the figure, 1 is a rim, 2 is a bridge, 3 is an end piece, 4 is a bearing, and 5 is a crane. Both rims 1 and 1 are brazed symmetrically by a bridge 2, and nose pads 6 are attached between the rims 1 and 1. The above-mentioned end pieces 3 and 3 are brazed to the outer sides of the rims 1 and 1, a bearing 4 is fixed to the tip end of the end piece 3, and a temple 5 is connected to the bearing holder 4.

A shaft 8 is formed at an end of the temple 5, and the shaft 8 is fitted into the bearing 4 so that the temple 5 is folded. FIG. 2 shows the temple 5 connected to the bearing 4. The bearing 4 has a cylindrical shape, and the temple 5 extends from a hole formed at the tip thereof, and the tip of the temple is made of resin. Modern 7 is inserted. FIG. 3 shows a coupling form of the bearing 4 and the temple 5, and shows a cross section of the bearing 4. The bearing 4 has a tubular shape, and the shaft 8 of the temple 5 is fitted into the tip of the inner cavity of the bearing 4, and the coil spring 9 is incorporated therein. A contact 10 is arranged on the shaft side of the coil spring 9, and the contact 10 is in contact with the shaft 8.

Therefore, the shaft 8 receives the spring force of the coil spring 9 via the contact 10 and is pressed against the bearing surface 11, so that the shaft 8 is stable without rattling. The shaft 8 is a sphere, the bearing surface 11 is also spherical, and the shaft 8 can rotate along the bearing surface 11. Therefore, the vine 5 extending from the shaft 8 pivots as the shaft 8 rotates and is folded into a predetermined position. As shown in FIG. 4, the bearing 4 has a hole 12 penetrating the tip end surface thereof, and a notch groove 13 is formed in the side surface of the bearing 4 continuously with the hole 12. Therefore, the temple 5 extending from the hole 12 can swivel.

The vine 5 has a spherical shaft 8, and the vine 5 can rotate about the shaft 8. The base 14 of the vine 5 has flat surfaces above and below, Rotate with the hole 12 as a guide. Here, the shaft 8 is not limited to the sphere as shown in FIG. 3, and may be a column. Of course, when the shaft 8 is a pillar, the bearing surface 11 on the bearing 4 side must also be shaped so as to conform to the outer surface of the pillar.

By the way, when assembling the crane joint of the present invention, the bearing 4 is not brazed to the end piece 3, the part 5 is inserted through the opening on the end piece 3 side, and the contact 10 and the coil spring 9 are inserted. Then, the bearing 4 is brazed to the end piece 3 and fixed. As described above, the crane joint structure of the present invention is one in which the shaft is formed at the temple end and the spring force is applied while the shaft is fitted in the bearing, and the following effects can be obtained. it can .

[0013]

[Effect of device]

 The vine of the present invention can be connected and folded without using a conventional hinge, has fewer brazing points than the hinge joint structure, and is easy to assemble. Further, since the shaft formed at the end of the temple is fitted in the cavity of the bearing and is pressed by the spring, the shaft is stable without rattling, and the rattling of the crane is eliminated. Also, in the conventional hinge joint structure, the hinge portion became large, impairing the design of the thin and slim vine, but in the joint structure of the present invention, the thickness of the above-mentioned bearing should be suppressed to a value slightly larger than the vine. This improves the design of the spectacle frame as a whole.

[Brief description of drawings]

FIG. 1 is an eyeglass frame using the temple joint of the present invention.

FIG. 2 is an external view of the temple joint of the present invention.

FIG. 3 is an embodiment showing the temple joint structure of the present invention.

FIG. 4 is a bearing tip portion used in the temple joint of the present invention.

[Explanation of symbols]

 1 rim 2 bridge 3 railing 4 bearing 5 crane 6 nose pad 7 modern 8 axis 9 coil spring 10 per 11 bearing surface 12 hole 13 notch groove 14 base

Claims (1)

[Scope of utility model registration request] 1. In a temple joint structure in which a temple is provided on both sides of a front frame and a temple is connected to allow folding, a bearing having a cavity inside is fixed to the above-mentioned jaw, and a tip of the bearing is provided at the tip of the bearing. A hole and a notch groove formed continuously with the hole are provided so as to communicate with the cavity, and a shaft provided at the end of the temple is fitted into a bearing surface formed at the tip of the cavity, and a spring force is applied to the shaft. The elastic joint structure of the eyeglass frame is characterized in that an elastic body such as a coil spring is inserted in the cavity for urging.