JP3001750U - Spiral joint structure for eyeglass frames - Google Patents

Abstract

(57) [Abstract] [Purpose] It is a temple joint structure for eyeglass frames that allows the temple to be folded without using hinges, and the temple is stable without rattling, and like the conventional spring hinge. Provide a joint structure that can push the open outward. [Structure] The vine is connected to the armature through a pin, a leaf spring is attached to the armature or the vine, and the free end of the leaf spring is brought into contact with the fulcrum of the vine or the side surface of the armature to urge the spring force. As a result, the vine is stabilized and the vine is pushed outward.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint structure for a temple of an eyeglass frame.

[0002]

[Prior art]

 As shown in FIG. 7, a general spectacle frame crane is foldably connected via a hinge. The armor is brazed to the frame that holds the lens, and each hinge piece of the hinge is brazed to the inner surface of the end of the armor and the vine so that the horn bends with respect to the fixed armor. However, the crane cannot sustain a stable folding operation. In other words, a small hinge loosens its shaft screw and wears the sliding surface, causing rattle, and as a result, the stability of the temple is lost, and the worn glasses may be displaced or come off.

Further, since the hinge is small in size, it is troublesome to manufacture, and a joint structure in which the hinge is in a straight line with the armature as shown by a solid line in FIG. Is made. Of course, if the glasses are simply worn on the face, the openness of the vine is sufficient, and since the vine has some elasticity, it can be slightly curved to fit the face. .

However, it is only for a short period of time that the glasses that fit the face only with the spring characteristics of the vine and the glasses do not rattle, and the spring characteristics of the vine itself are extremely bent and plastically deformed. Unless the material is used, it is always constant and can be restored to its original shape by removing the force, but as mentioned above, the hinge connecting the vines becomes loose. 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, and the glasses fall off the face, the lens is damaged, There are also situations 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 allows the temple to be opened slightly further outward from the linear state with the armature is desired and used partially. ing. FIG. 8 shows a conventional example of this joint structure, which is called a spring hinge. That is, the basic idea of the spring hinge is that by fixing the fixed butterfly c to the armor a by brazing and by using the other butterfly as the sliding butterfly d to allow sliding for a certain distance, as shown by the dotted line, The opening in the direction 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. In 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 on the temple. By the way, the hinge structure in which the coil spring is built in the sliding butterfly 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 prone to failure, and once it fails, it is difficult to repair.

This type of hinge with a spring has a structure in which a spring force is applied to the vine so that the vine can be opened outward. However, since the hinge is a joint structure using a hinge, The rattling of the turn occurs, and the stability of the vine based on it is impaired.

[0008]

[Problems to be solved by the present invention]

 As described above, the conventional joint structure of the eyeglass frame has the above problems. The problems to be solved by the present invention are these problems, and it is to provide a stable temple joint structure without using a hinge, and a joint structure having a function corresponding to a hinge with a spring.

[0009]

[Means for Solving the Problems]

 The temple joint structure of the eyeglass frame according to the present invention is a structure that can be folded without using a conventional hinge. Therefore, the vines are connected by using the pins as shafts, and of course, they are bent so that they can be folded. However, the above-mentioned pins pass through the holes formed in the end pieces and the fulcrum of the vines with a rough tolerance. Therefore, the vine cannot play a stable folding operation only by being connected by the pin. The present invention uses a leaf spring to stabilize the vine in a connecting structure using a single pin. The form of the plate panel is not particularly limited, and it is attached to the end side and presses its free end against the fulcrum of the crane to exert a spring force. Or, conversely, attach it to the temple side and press its free end against the armature.

The vine is connected so that it can be folded, but it has a joint structure that can be slightly opened outward like a conventional spring hinge. In this case, if the vine is pushed open outward, the leaf spring is deformed, and a spring force acts on the vine, and if the push-opening force is removed, it returns to the original position. Similarly, when the vine is folded, the spring force of the leaf spring acts on the fulcrum of the vine to prevent the folded vine from flapping. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0011]

【Example】

 FIG. 1 is an embodiment showing a temple joint structure of an eyeglass frame according to the present invention. In the figure, 1 is a crane and 2 is an armor, and the arm 1 is connected to the tip of the armor 2 with a pin 3 as an axis. The endpieces 2 are provided on both sides of the front frame to tighten the rim ends that hold the lens. In the figure, 4 shows a cross section of the rim, and 5 shows a leaf spring.

One end of the leaf spring 5 is fixed to the outer surface of the armature 2, and the free end 6 is in contact with the outer surface of the fulcrum 7 of the temple. The free end 6 of the leaf spring 5 not only contacts the fulcrum portion 7, but also applies a spring force to the fulcrum portion 7 to press it. Therefore, the pin hole of the fulcrum portion 7 is in contact with the pin 3 without a gap, and the fulcrum portion 7 is stably supported at a fixed position by the spring force. Although the pin 3 is fixed so as not to come off, the fulcrum portion 7, that is, the vine 1 is stable without rattling because it is pressed by the leaf spring even if the tolerance with the pin hole is rough. To do.

Although the leaf spring 5 is attached to the end piece 2, a groove is formed on the outer side surface of the end piece 2 so as not to be displaced, and is fixed in a state of being fitted in the groove. The fixing means is not limited to the screw 8, and the end may be brazed, and a pin may be press-fitted in place of the screw 8 for caulking. FIG. 2 shows a specific example of another attachment form of the leaf spring 5. In this case, the end of the leaf spring 5 is fitted in the recess 9 formed in the end piece, and therefore the screw 8 is used. Only functions to prevent the leaf spring 5 from coming off.

FIG. 3 shows another embodiment of the present invention, in which the leaf spring 10 is also attached to the outer surface of the armature 11, and the leaf spring 10 has a curved shape in an arc shape. The tip (free end) is brought into contact with the fulcrum 7 of the crane to exert a spring force. As described above, the shape of the leaf spring is arbitrary, and the attachment form is not limited, but the temple 1 is configured to be bent and folded around the pin 3 as an axis. Furthermore, not only can it be folded, but the temple 1 can be opened slightly outward like a spring hinge.

FIG. 4 shows a case where the crane 1 is pushed outward. Naturally, if the temple 1 opens outward, the leaf spring 5 also bends outward. Therefore, a spring force acts on the vine 1 to push the vine 1 back to its original position. That is, the same effect as the conventional spring hinge is exerted on the temple 1. FIG. 5 shows a case where the vine 1 is folded. Even in such a folded state, the leaf spring 5 contacts the fulcrum portion 7 of the vine 1 to exert a spring force, and the folded vine 1 is flapped. I try not to.

In the above-described embodiment, the case where the leaf spring is attached to the outer side surface of the armature has been described, but the leaf bar is not limited to the outer side of the armature and may be the inner side. FIG. 6 shows an embodiment in which a leaf spring is provided inside the armature. A plate material is brazed to the end of the temple 1 to form a fulcrum portion 12, and shafts 13a and 13b are projected from the upper and lower ends of the fulcrum portion 12, and the shafts 13a and 13b are the upper pieces 15 of the end piece 14, It is loosely fitted in the shaft holes 17a, 17b formed in the lower piece 16.

Therefore, the vine 1 is folded around the shafts 13a and 13b. Further, the leaf spring 18 attached to the inside of the armor 14 abuts the tip of the leaf spring 18 on the fulcrum portion 12 to exert a spring force on the fulcrum portion 12. Although the shaft 13 is loosely fitted in the large-diameter shaft hole 17, it is pressed to one side by the spring force of the leaf spring 18 and is stabilized in a fixed position. Further, when the temple 1 is folded, the fulcrum portion 12 also rotates, and at the same time, the amount of bending of the leaf spring 18 becomes small. However, the leaf spring 18 exerts a spring force on the surface of the fulcrum portion 12 rotated by about 90 °, so that the vine 1 is stabilized without rattling.

In the case of the embodiment shown in FIG. 6, in order to push the temple 1 further outward, the shaft holes 17a and 17b into which the shafts 13a and 13b are loosely fitted may be formed into curved elongated holes. Good. Further, although not shown, a leaf spring can be provided on the temple side. In this case, the free end of the leaf spring is brought into contact with the end piece to urge the spring force. As described above, the temple connecting structure of the eyeglass frame according to the present invention uses the leaf spring to apply the belt force to the temple fulcrum, and the following effects can be obtained.

[0019]

[Effect of device]

 The temple joint structure of the present invention is provided with the leaf spring, and the spring force of the leaf spring acts on the temple fulcrum or the armature, so that the temple can be stably folded without wearing and the eyeglasses worn. Is stable without misalignment. Moreover, since the fulcrum structure is simple and the conventional hinge is not used, the manufacturing cost is greatly reduced. It is also a great effect that the leaf spring can be used to provide the same function as that of a conventional spring hinge, and since the leaf spring has a simple structure, it does not break down.

[Brief description of drawings]

1 is an embodiment showing a temple joint structure of the present invention, and b is a view as seen from an arrow A. FIG.

FIG. 2 is another embodiment showing the temple joint structure of the present invention.

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

FIG. 4 shows a state in which the vine is pushed outward.

FIG. 5 shows a state in which the vine is folded.

FIG. 6A is a temple joint structure in which a leaf spring is provided inside an endpiece, and b is a sectional view taken along line BB.

FIG. 7 shows a conventional crane joint structure.

FIG. 8 A conventional hinge with a spring.

[Explanation of symbols]

 1 Crane 2 Yoroi 3 Pin 4 Rim 5 Leaf Spring 6 Free End 7 Support Point 8 Screw 9 Recess 10 Leaf Spring 11 End Wire 12 Support Point 13 Shaft 14 End Wire 15 Upper Piece 16 Lower Piece 17 Shaft Hole

Claims (3)

[Scope of utility model registration request] 1. A joint structure of a vine that is foldably connected to an armature fixed to both sides of a front frame of eyeglasses. A leaf spring is attached to the armature or the arm, and the arm is connected with the armature and a pin as a shaft. A temple joint structure for an eyeglass frame, wherein a free end of the leaf spring is brought into contact with a fulcrum portion or a side surface of an armature of the temple to apply a spring force. 2. In a joint structure of a vine, which is foldably connected to an armature fixed to both sides of a front frame of eyeglasses, a leaf spring is attached to the outer surface of the armature or the vine, and the arm has a armature and a pin. The structure is connected as a shaft, and the free end of the leaf spring is brought into contact with the fulcrum portion of the vine or the outer surface of the armature to urge the spring force, and the vine can be pushed outward. Crane fitting structure for eyeglass frames. 3. In a joint structure of a vine that is foldably connected to an armature fixed to both sides of a front frame of eyeglasses, a leaf spring is attached to the inner side of the armature, and the arm is connected with the armature and a pin as an axis. A temple joint structure for a spectacle frame, wherein the free end of the leaf spring is brought into contact with a fulcrum portion provided by fixing a plate material to the temple end portion to urge a spring force.