JPH0655123U - Spring hinges for eyeglass frames - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a spring-loaded hinge that can be expanded further from the opened state by simplifying the structure of the spring-loaded hinge. [Structure] The core rod 8 is connected to one butterfly piece 9,
The coil spring 7 and the pipe piece 10a, 10
b is attached and inserted into the hole 6 of the case 4 fixed to the inner surface of the temple 1, and the pipe pieces 10a and 10b are fitted in the hole groove 11 larger than the hole 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hinge for connecting the vines of an eyeglass frame, and to a hinge structure in which a spring is provided to give elasticity to the vine.

[0002]

[Prior art]

 As shown in FIG. 4, a general spectacle frame vine is openably and closably connected to the armature through a hinge. The armor is brazed to the frame that holds the lens, and each hinge of the hinge is brazed to the inner surface of the end of the armor and the vine, so that the arm opens and closes with respect to the fixed armor. However, the most opened state is a straight line with the armature as shown by the solid line in the figure, and it cannot be opened any further. Of course, if the eyeglasses are simply worn on the face, the opening of the vine is sufficient, and since the vine has a lot of elasticity, it can be slightly curved to fit the face. I can.

However, it is only for a short period of time after the purchase that the spectacles worn by the vine fit the face only with the spring characteristic of the vine, and the spring characteristic of the vine itself is extremely bent and plastically deformed. Unless the force is removed, the material can always return to its original shape by removing the force, but the hinge connecting the vines will be rattled. Also, with the conventional hinge joint structure using only hinges, there is no means to absorb the impact force when some impact is applied to the front frame, the glasses may fall from the face, the lens may be damaged, There are also cases where the frame itself is bent.

By the way, as one means for solving such a problem of the spectacle frame, a joint structure that can open the vine slightly outward from the linear state with the armor is desired, and is used in part. ing. FIG. 5 shows a conventional example of this joint structure. That is, the basic idea of the joint structure is as shown by the dotted line by fixing the fixed butterfly c to the armor a by brazing and fixing the other butterfly as the sliding butterfly d to allow sliding for a certain distance. An outward opening can be given to the crane b.

A guide e is fixed to the inner surface of the temple b, and the sliding butterfly piece d slides by using the guide e as a guide. Inside the sliding butterfly piece d, a coil spring ( (Not shown) is accommodated, and the length is adjusted so as to be compressed when the temple b is opened to the outside, and the restoring force of the coil spring acts. By the way, the hinge structure in which the coil spring is built in the sliding hinge piece d is complicated, and therefore the number of manufacturing steps is increased, resulting in an expensive hinge with a spring. Moreover, since the structure is complicated, it is easy to break down, and once it breaks down, it is difficult to repair.

[0006]

[Problems to be solved by the present invention]

 As described above, the conventional spring hinge has the above problems. The problems to be solved by the present invention are these problems, and provide a hinge with a spring which is easy to manufacture and assemble and has few failures.

[0007]

[Means for Solving the Problems]

 In the spring hinge of the present invention, a core rod is connected to one of the hinge pieces, and a brim is formed at the tip of the core rod, and a coil spring is attached in a compressible state. Then, the core rod to which the coil spring is attached is put into a case having a hole for accommodating the coil spring. However, if the coil spring and the core rod are simply inserted into the hole, they will be pulled out.Therefore, a retaining means is provided between the coil spring and the butterfly piece. The pipe that is held is inclined and divided into two, and the pipe is set on the core rod.

Then, a hole groove larger than the hole diameter is formed on the inlet side of the hole of the case, and the split pipe piece is accommodated in the hole groove. The split pipe piece is laterally displaced along the inclined surface and fits into the groove so that it cannot be removed by itself. The lateral displacement of the split pipe pieces is caused by the spring force of the coil spring.

By the way, the case is brazed to the inner surface of the vine on the spectacle frame, and the other butterfly piece is brazed to the rails on both sides of the front frame to connect the vine so that the vine can be opened and closed. When folding the vine, it rotates about the hinge shaft, and conversely, when the vine is opened and pushed further outward, the contact point between the vine and the armor is used as a fulcrum to compress the coil spring. While sliding. The coil spring is compressed and deformed between the brim at the tip of the core rod and the split pipe piece. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0010]

【Example】

 1a and 1b are embodiments showing a spring hinge according to the present invention. In the figure, reference numeral 1 denotes a crane, 2 denotes an endowment, one butterfly piece 3 is brazed to the endpiece 2, and a case 4 is brazed to the inner surface of the vine 1. Therefore, the vine 1 can be folded and opened around the hinge shaft 5 like a general glasses frame, and can be opened, so that it can be pushed outward from the open state. It is possible.

A hole 6 is formed in the case 4, and a coil spring 7 and a core rod 8 are housed in the hole 6, and the core rod 8 is connected to the other butterfly piece 9 and is provided between the butterfly piece 9 and the coil spring 7. Pipe pieces 10a and 10b, which are divided into two with an inclined surface, are interposed between the pipe pieces 10a and 10b. The hole 6 is formed with a hole groove 11 having a larger diameter on the inlet side, and the pipe pieces 10a and 10b are fitted in the hole groove 11 in a state where they are laterally displaced from each other as shown in FIG. The pipe pieces 10a and 10b cannot be separated from the hole groove 11 by themselves.

The coil spring 7 is in a compressed state between the brim 12 formed at the tip of the core rod 8 and the pipe pieces 10a and 10b, and the pipe pieces 10a and 10b are always subjected to an axial pressing force. Due to this pressing force, both pipe pieces 10a and 10b are laterally displaced along the inclined surface and fit to the inner peripheral surface of the hole groove 11. A guide piece 15 is formed on the butterfly piece 9, and the guide piece 15 fits into the guide groove 16 of the case 4 and functions as a detent for the case 4 and the temple 1.

FIG. 2 shows a state before the coil spring 7 attached to the core rod 8 is housed in the hole 6 of the case 4, but the divided pipe pieces 10a and 10b are as shown in FIG. Insert into hole 6 with no lateral displacement. If the pipe pieces 10a, 10b are not laterally displaced, they can be inserted into the holes 6, and once inserted, they are fitted in the hole grooves 11 having a large inner diameter and laterally displaced along the inclined surface as shown in FIG. 1b. To prevent it from slipping out. The coil spring 7 and the pipe pieces 10a and 10b are put in the core rod 8, and the core rod 8 is screwed into the screw hole of the butterfly piece 9 to be connected. By using the pipe pieces 10a, 10b having the inclined surface, the pipe pieces 10a, 10b naturally fit into the hole groove 11, and it is not necessary to perform a special retaining process.

By the way, if both pipe pieces 10 a and 10 b are fitted in the hole groove 11, the coil spring 7 and the core rod 8 cannot be pulled out from the hole 6. Therefore, as shown in FIG. 3, a small hole is formed in the case 4, and the pin 13 is inserted into this hole to press one pipe piece 10a from the side surface. The pipe piece 10a is moved closer to the core rod 8 side, and at the same time, the other pipe piece 10b is also displaced along the inclined surface to be closer to the core rod 8 side. In this case, a groove is formed in the end surface 14 so that the pipe piece 10a does not rotate, and the convex portion formed at the tip of the butterfly piece 9 fits into the groove to form a kind of guide, preventing the pipe piece 10a from rotating. It is stopped and moved to the core rod 8 side without rotating.

Then, when there is no step between the pipe pieces 10a and 10b, and the pipe piece is as shown in FIG. 2, it can be pulled out. As described above, in the hinge with spring of the present invention, the core rod is connected to one of the hinge pieces, and the coil spring and the two pipe pieces that come into contact with each other on the inclined surface are attached to the core rod and are inserted into the holes of the case. By doing so, the pipe piece is laterally displaced and can be fitted into the hole groove, and the following effects can be obtained.

[0016]

[Effect of device]

 The spring hinge of the present invention can be assembled simply by connecting the core rod to one of the hinge pieces, attaching the coil spring and the divided pipe piece to this core rod, and inserting it into the hole of the case. It's that easy. In other words, the pipe piece divided into two via the inclined surface is laterally displaced and fits in the hole groove of the case only by inserting, so once fitted, it cannot be pulled out by itself. In addition, the spring hinge of the present invention has a structure in which the coil spring is housed in the hole of the case, and it does not require a special slide part as in the past, which reduces the manufacturing man-hours of each part and simplifies the entire structure. Therefore, maintenance is unnecessary.

[Brief description of drawings]

FIG. 1 is an embodiment showing a spring hinge according to the present invention.

FIG. 2 is a state in which a core rod is connected to one of the butterfly pieces, a coil spring and both pipe pieces are attached to the core rod, and the state before being inserted into a case hole.

FIG. 3 shows a case where a core rod and a coil spring are pulled out from a case hole.

FIG. 4 is a general hinge joint.

FIG. 5 A conventional hinge with a spring.

[Explanation of symbols]

 1 Crane 2 Yoroi 3 Butterfly piece 4 Case 5 Shaft 6 hole 7 Coil spring 8 Core rod 9 Butterfly piece 10 Pipe piece 11 Hole groove 12 Flange 13 Pin 14 End surface 15 Guide piece 16 Guide groove

Claims (2)

[Scope of utility model registration request] 1. In a hinge with a spring that can be further expanded from the state where the temple of the spectacle frame is opened, one butterfly piece is fixed to the front frame end piece, and the other butterfly piece has a brim at the tip. Connect the core rod, incline the coil spring and the pipe between the brim and the butterfly piece, and attach the pipe piece divided into two, insert it into the hole of the case fixed to the inside of the vine, and divide the above pipe piece Is a hinge with a spring for an eyeglass frame, which is fitted in a groove with a part of the hole enlarged. 2. A hinge with a spring for an eyeglass frame according to claim 1, wherein a pin hole is formed at a position where the hole groove is formed, and a guide is formed between the pipe piece and the butterfly piece so that the pipe piece does not rotate.