JP3004260U - Spiral joint structure for eyeglass frames - Google Patents

Abstract

(57) [Abstract] [Purpose] It is a joint structure that connects the vines of the eyeglass frame, and it is possible to always fold the vines stably without using a conventional hinge, and to perform the assemble and assembly of the vines with one touch. Providing a joint structure that can be used. A shaft is provided in a vertical direction in a concave portion formed at an end of the end piece, and a bearing made of spring steel having a substantially C shape is formed at one end of the temple, and a bearing hole of the bearing has an outer diameter of the shaft.
Also, an opening is formed in a width slightly smaller than the shaft diameter, the shaft is fitted in the bearing hole to enable rotation, and when the crane is opened, the contact piece provided on the bearing contacts the bottom surface of the recess. It is a temple joint structure.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vine joint structure of an eyeglass frame, which is simple in structure and does not always rattle.

[0002]

[Prior art]

 The temples of the spectacle frame are generally foldably connected via hinges. The hinge has butterfly pieces on both sides around the shaft screw, one of the butterfly pieces is fixed to the armature brazed to the front frame, and the other butterfly piece is fixed to the vine. Therefore, the vine is bent and folded around the hinge axial screw.

By the way, the hinge is small as a joint member for connecting a relatively long temple, and in particular, the shaft screw of the hinge is thin and short. Therefore, if the temple is repeatedly folded and folded, the sliding surfaces of both butterfly pieces will wear and the shaft screw will loosen, resulting in rattling of the temple and misalignment of the worn glasses. It is only for a short period of time after purchasing glasses that the crane can be stably folded without rattling, and the shaft screw is tightened each time the temple rattles.

Since the hinge has a concave portion formed on one of the hinge pieces and a convex portion formed on the other butterfly piece, the two hinge pieces bend each other because they are fitted with each other and connected by a shaft screw. If so, the metal contact surfaces of the concave and convex parts inevitably wear. Of course, the rattling of the vine is not only due to wear of the sliding surface, but also largely due to loosening of the shaft screw that has been retightened when the convex part is fitted into the concave part and assembled. On the other hand, since the hinge is small in size, it is not easy to manufacture, and since the screw that serves as the shaft screw is even thinner and smaller, it is troublesome to manufacture, and the assembly work of the hinge is also a skillful work. .

[0005]

[Problems to be solved by the present invention]

 As described above, the hinge that connects the temples of the eyeglass frame has the above problems. The problems to be solved by the present invention are these problems, and provide a temple joint structure which eliminates rattling of the temple and has a simple structure.

[0006]

[Means for Solving the Problems]

 The temple joint structure of the present invention has a shaft that serves as a bending center, and the temple is configured to be bent and folded around the shaft. Therefore, although a bearing that fits the shaft is formed at the end of the temple, the bearing is configured so that it can be fitted and attached to the shaft with one touch. That is, a part of the bearing has an opening, and the shaft enters through the opening to be fitted, and the bearing force acts so that the once fitted bearing does not come off.

When the bearing is fitted to the shaft, its opening is slightly opened, and once fitted, a spring force is applied to the shaft so that the shaft does not come off. That is, the bearing functions to hold the shaft with a spring force. Further, in order to prevent the bearing fitted to the shaft from moving in the longitudinal direction of the shaft, a concave portion is formed on the side of the end to which the shaft is attached, and the convex bearing is fitted into the concave portion. Of course, a bearing may be provided on the end side and a shaft may be provided on the temple side. Embodiments according to the present invention will be described in detail below with reference to the drawings.

[0008]

【Example】

 FIG. 1 is a partial external view of a spectacle frame, in which the temple 1 is connected to the end piece 2, and the end piece 2 is brazed to the rim 3. However, the present invention relates to a temple joint structure, and regardless of the form of the eyeglass frame, for example, when the left and right lenses are directly connected by a connecting member without using a rim, or the upper half is called a half rim and is made of metal. It may be a case where the rim is used and the lower half is composed of water thread.

By the way, the vine 1 is connected so as to be foldable via the joint portion 4, and FIG. 2 shows an end portion of the end piece 2. An upper member 6 and a lower member 7 are formed in the end portion with a recess 5 interposed therebetween, and a shaft 8 is vertically attached to the upper and lower members 6, 7. In order to mount the shaft 8, the lower member 7 has a shaft hole penetrating, and the upper member 6 is provided with a shaft hole without penetrating, and the shaft 8 is inserted into these shaft holes. The lower end of 8 is brazed to the lower member 7.

FIG. 3 shows a bearing structure formed at the end of the temple. The bearing 9 has a substantially C-shape, a bearing hole 10 is formed in the center, and a part of the bearing 9 is cut out to have an opening 11. The opening 11 communicates with the bearing hole 10. . Here, the inner diameter of the bearing hole 10 is the same as that of the shaft 8, and the width of the opening 11 is slightly smaller than the outer diameter of the shaft 8. The height (thickness) h of the bearing 9 is approximately the same as the height H of the recess 5 formed in the end piece 2. A spring material is used for the bearing 9, and the opening 11 can be pushed open by bending the tip. Therefore, if the shaft 8 is applied to the opening 11 and pressed from the rear, the opening 11 is opened and the shaft 8 is fitted into the bearing hole 9.

FIG. 4 shows a state in which a crane bearing 9 is fitted and connected to the shaft 8 of the armor 2. The bearing 9 can rotate around the shaft 8 and can be folded like a conventional crane. In the same figure, the crane 1 is in an open state and is in line with the armature 2, but the crane cannot be opened any more. The bearing 9 forms an abutment piece 13, which is a flat portion from the curved surface portion to the tip 12, and contacts the bottom surface 14 of the recess 5 when the temple 1 is opened. Therefore, the corresponding piece 13 is a kind of stopper and regulates the opening degree of the temple 1.

Further, the corresponding piece 13 not only functions as a stopper of the temple 1, but the bearing 9 tightens the shaft 8 and prevents the bearing 9 from coming off from the shaft 8. That is, when wearing the glasses, the moment M 1 acts by pushing the temple 1 outwards. This moment M acts on the hitting piece 13 to reduce the width of the opening 11 of the bearing 9.

In the embodiment described above, the shaft is provided on the end side and the bearing is provided on the temple side. However, the bearing can be provided on the armor and the shaft can be provided on the temple, and they are functionally the same. Is. Further, the vine is connected by fitting the convex portion which serves as the bearing into the concave portion of the armature, but the concave portion and the shaft are exposed on the surface. In order to prevent the exposure, it is also necessary to cover the outside of the recess if the appearance of the spectacle frame is taken into consideration. As described above, the crane joint structure according to the present invention is such that the shaft is fitted with and connected to a roughly C-shaped bearing, and the following effects can be obtained.

[0014]

[Effect of device]

 The temple joint structure of the present invention is constructed by fitting a roughly C-shaped bearing and a shaft to each other, and the structure is much simpler than the conventional hinge joint. Since the bearing is made of steel, the shaft can be fitted into the bearing hole from the opening with one touch. Therefore, the assembling work becomes easy. Also, since the bearing is made of spring steel, it restrains the shaft fitted in the bearing hole by exerting a spring force, and there is no rattling between the shaft and the bearing. Does not shift position. Of course, it is not necessary to re-tighten the shaft screw unlike the conventional hinge joint.

[Brief description of drawings]

FIG. 1 is an external view of a spectacle frame.

FIG. 2 is a joint portion of an endowment, where a is a plan view and b is a front view.

FIG. 3 is a joint part of a temple, in which a is a plan view and b is a front view.

FIG. 4 is a structure of a crane joint portion of the present invention.

[Explanation of symbols]

 1 Crane 2 Yoroi 3 Rim 4 Joint 5 Recess 6 Upper member 7 Lower member 8 Shaft 9 Bearing 10 Bearing hole 11 Opening 12 Tip 13 Piece per piece 14 Bottom surface

Claims (2)

[Scope of utility model registration request] 1. A crane joint structure for connecting a temple of an eyeglass frame in a foldable manner, wherein a shaft is vertically provided in a concave portion formed at an end of the end piece, and one of the temple ends is a substantially C-shaped bearing made of spring steel. To form a bearing hole of the bearing as the outer diameter of the shaft, and to form an opening having a width slightly smaller than the shaft diameter, and to fit the shaft into the bearing hole to enable rotation.
A crane joint structure characterized in that, when the crane is opened, a contact piece provided on the bearing is brought into contact with the bottom surface of the recess. 2. A crane joint structure for connecting vines of an eyeglass frame in a foldable manner, wherein a shaft is vertically provided in a concave portion formed at the vine end, and one of the end pieces has a substantially C-shaped bearing made of spring steel. To form a bearing hole of the bearing as the outer diameter of the shaft, and to form an opening having a width slightly smaller than the shaft diameter, and to fit the shaft into the bearing hole to enable rotation.
A crane joint structure characterized in that, when the crane is opened, a contact piece provided on the bearing is brought into contact with the bottom surface of the recess.