JPH11326844A - Curvilineaer joint structure for spectacle frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint structure which may be easily manufactured and is free from shaking of temples of a spectacle frame as a joint for foldably connecting the temples. SOLUTION: A wraparound endpiece end is provided with a joint part 5 comprising a coil spring 7 and a temple end is provided with a joint part 6 comprising a coil spring 9. This joint part is screwed and connected to the joint part 5 at the wraparound endpiece end. Both coil springs 7, 9 are screwed by having a slight tightening tolerance. A wire is extended from the joint part of the wraparound endpiece end, by which a stopper 8 acting as a positioning member when the temples are opened is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure in which members constituting an eyeglass frame are bent and attached.

[0002]

2. Description of the Related Art A crane is attached to a spectacle frame, and the crane is folded. Joints such as hinges are provided on the yoke brazed on both sides of the front part so that the crane can be folded.However, since very long hinges connect long crane, loosening and sliding of screws Due to the wear of the moving surface, the vine is loose and sometimes the screws must be retightened.

[0003] Further, there is a type of glasses in which sunglasses are combined with the front of a front part to form a flip-up type, and this flip-up type frame is also connected by a hinge. Therefore, if the hinge screw is loosened or the sliding surface of the hinge is worn, rattling occurs and the jumped-up frame cannot keep its state and falls. On the other hand, glasses that are used for makeup and are mounted so that one side of the rim can be flipped up are also known. Similarly, the rim is rattled due to wear of hinges or the like.

In recent years, there have been many cases where another joint structure is used instead of a hinge which has been frequently used as a joint for connecting a crane, but basically, a looseness based on wear or the like of the joint portion is provided. It cannot be prevented.

[0005]

The joint for connecting the vine so that it can be folded and the joint for mounting the flip-up frame have the above-mentioned problems. The problem to be solved by the present invention is this problem, and provides a joint structure that does not rattle even if the sliding surface of the joint part is slightly worn by the folding operation or the flipping-up operation.

[0006]

The joint structure of the present invention uses a coil spring, and two large and small coil springs constitute a joint portion and are used in pairs. That is, a small coil spring is screwed and combined with a large coil spring, and the tightening tolerance is such that the coil spring can rotate without rattling. When a coil spring with a small coil diameter is screwed into a coil spring with a large coil diameter, a small tightening tolerance is provided, so that a large-diameter coil spring can increase its diameter and a small-diameter coil spring can reduce its diameter. Because it is a coil spring, it can not only expand and contract its length but also bend and increase or decrease its diameter.

Here, the large-diameter coil spring is screwed into the screw hole, and the small-diameter coil spring is screwed into each other corresponding to a screw. Moreover, it can rotate. Even when the sliding surface is worn, the tightening tolerance is only slightly loosened, and no gap is generated therebetween. In the present invention, not only the two joints are formed by coil springs, but also one of the joints can be a screw. That is, a small-diameter coil spring can be screwed into a joint having a large screw hole, or a small-diameter screw can be screwed into a joint of a large-diameter coil spring.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One end of each of two coil springs screwed to each other is connected to respective eyeglass frame parts.
Alternatively, the coil spring wire can be directly extended and molded as a component of the eyeglass frame. For example, if a large-diameter coil spring is provided at the flap end brazed to the front part, and a small-diameter coil spring is formed at the vine end, if these large and small coil springs are screwed together, the vine will have a joint formed of a coil spring. Can be foldably connected via

In the case where the present invention is applied to a flip-up frame, a large-diameter coil spring is provided at the upper end edge of the front portion,
Small-diameter coil springs are provided on the flip-up frame side, respectively, and both coil springs are screwed together, so that the flip-up frame can be attached to the front of the front part. Of course, in this case, the coil diameters of the large and small coil springs are screwed together with a slight tightening tolerance as in the case of the crane. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0010]

FIG. 1 shows an eyeglass frame using the joint structure of the present invention. The basic form of the eyeglass frame is the same as that of the related art. Both rims 1 and 1 are connected by a bridge 2, and outer rims 3 and 3 are brazed to the outside of the rims 1 and 1. A crane 4 is connected to the yoke 3 so as to be foldable. The joint structure of the present invention is used as a joint for the crane 4.

FIGS. 2 and 3 are detailed views of this joint.
FIG. 4 shows a joint portion in a state where the yoroi 3 and the crane 4 are separated. That is, the lip end has a joint portion 5 made of a coil spring, and one crane end has a joint portion 6 made of a coil spring. The joint portion 5 at the end of the coil forms a coil spring 7 having a large coil diameter, and the distal end is bent outward from the coil spring and extends to form a stopper 8.

The coil spring 9 at the crane end has a small coil diameter, and as shown in FIG. 3, the coil spring 9 at the crane end is screwed and connected to the coil spring 7 formed on the yoke side. The coil wire forming the coil spring 7 has a thread, and a gap between the coil wires forms a thread valley to form a kind of screw hole. Although the coil spring 9 can be screwed into this screw hole, it is screwed with some tight tolerance, so that the large-diameter coil spring 7 is expanded and the small-diameter coil spring 9 is contracted.

Accordingly, the crane 4 is attached to the coil spring 7 formed on the joint 5 of the yoke 3 and folded.
Since the screws are screwed together with some tight tolerances, the crane folding operation does not rattle, and even if the sliding surface is worn, only the tight tolerances are loosened, and there is a gap between the coil springs 7 and 9. Absent. Of course, both coil springs 7, 9
It is free to apply an appropriate surface treatment so that the sliding surface is hardly worn.

FIG. 3 shows a case where the vine 4 is opened.
Is positioned against a stopper 8 formed continuously extending from a coil spring 7 provided on the yoke 3, and is not further opened. Since the yoke 3 made of a spring material can be flexed and deformed, the crane 4 positioned on the stopper 7 can be flexed to some extent, and can fit on both sides of the face when wearing glasses. . In addition, since the distal end of the wire extending from the coil spring 7 is bent to form the stopper 8, the degree of opening of the crane can be freely adjusted by appropriately changing the position and direction of bending the wire.

FIG. 5 shows another embodiment of the present invention.
That is, the glasses have a flip-up frame attached to the front part of the glasses.
Are mounted via joints 11, 11. Fitting 1
1 is the same as that of the previous embodiment, except that one joint 12 having a large coil diameter is brazed to the upper part of the front rim 1 and the other joint 13 composed of a small-diameter coil spring is brazed to the flip-up frame 10. Is attached. Joint part 13
Is screwed and combined with another joint portion 12, and the flip-up frame 10 swings through the joint 11 so that the frame can be held together with the front portion and can be freely flipped up.

FIG. 6 shows the joint 11 separated from the joint 11.
2 shows a case where the joint part 13 is separated from the joint part 2. The coil spring of the joint portion 13 is screwed into the coil spring 12 of the joint portion 12 to form the joint 11, but is screwed with a slight tightening tolerance similarly to the joint of the crane 4, and as a result, the flip-up frame 10 is rattled. In addition, the jumped-up frame 10 does not fall and close by itself.

FIG. 7 shows still another embodiment of the present invention, which shows eyeglasses to which a flip-up rim 14 is attached.
The flip-up rim 14 swings via a joint 15 and can be flipped up as required. The structure of the joint 5 is such that two large and small coil springs are screwed together as in the above embodiment. Unlike the flip-up frame shown in FIG. 5, one rim can be flipped up separately, which is convenient for makeup.
FIG. 7 shows a case where one flip-up rim 14 is attached to the front part, but it may be attached to both sides. However, since the flip-up rim 14 has a joint structure using a coil spring, it can be easily removed, and the rim can be attached to the opposite side.

As described above, the joint structure of the present invention is such that two large and small coil springs are screwed to each other, and in this case, are screwed with a slight tightening tolerance. I can do it.

[0019]

According to the joint structure of the present invention, two large and small coil springs having different coil diameters are screwed together with a slight tightening tolerance, so that there is no play between the two coil springs. Even if the sliding surface is worn, only the tightening tolerance is loosened, and no gap is generated between both coil springs. On the other hand, it is easy to manufacture because the joint part is composed of a coil spring, and when it is used for a vine joint, the folding operation of the vine does not rattle, and the vine is opened slightly outward from the open state. It has a function as a spring hinge that can be pushed open.

[Brief description of the drawings]

FIG. 1 is an eyeglass frame using the joint structure of the present invention for a vine joint.

FIG. 2 is a detailed view of a crane joint.

FIG. 3 is a detailed perspective view of a crane joint.

FIG. 4 is an exploded view of a crane joint.

FIG. 5 is a pair of glasses to which a flip-up frame is attached.

FIG. 6 is an exploded view of a joint of the flip-up frame.

FIG. 7 is a pair of glasses to which a flip-up rim is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rim 2 Bridge 3 Yoroi 4 Crane 5 Joint part 6 Joint part 7 Coil spring 8 Stopper 9 Coil spring 10 Spring frame 11 Joint 12 Joint part 13 Joint part 14 Spring rim 15 Joint

Claims (5)

[Claims] In a joint for connecting parts of an eyeglass frame so as to be able to bend, two large and small coil springs having different coil diameters are used, and a joint of a small-diameter coil spring is screwed to a joint of a large-diameter coil spring. A bent joint structure in an eyeglass frame, wherein both coil springs are screwed together with a slight tight tolerance. 2. A joint for connecting a crane of an eyeglass frame so that the crane can be folded, wherein a joint portion constituted by a coil spring is provided at the yolo end, and a joint portion constituted by a coil spring is provided at the crane end. Eyeglasses characterized in that the two coil springs are screwed together with a slight tightening tolerance, a wire is extended from the joint at the end of the coil, and a stopper for positioning when the vine is opened is formed. Flex joint structure in the frame. 3. A joint of a flip-up frame attached to the front of the front portion of the glasses, wherein a joint portion made of a coil spring is provided at an upper end of the front portion, and a joint portion made of a coil spring is provided on an edge of the flip-up frame. A bent joint structure in an eyeglass frame, wherein the two coil springs are screwed together with a slight tightening tolerance. 4. A joint of a flip-up rim attached to the front of the front portion of the glasses, wherein a joint portion formed of a coil spring is provided at a side end of the front portion, and a coil spring is formed at a side end of the flip-up rim. A bent joint structure for an eyeglass frame, wherein a joint portion is provided and screwed and connected to the joint portion on the front side end, and both coil springs are screwed with a slight tightening tolerance. 5. The method according to claim 1, wherein one of the two joint portions screwed to each other is constituted by a screw or a screw hole.
Or a flex joint structure for an eyeglass frame according to claim 4.