JP3090689U - Glasses frame crane joint structure - Google Patents

Abstract

(57) [Problem] To provide a crane joint structure for an eyeglass frame, in which a crane can be folded using a joint formed by bending a wire having excellent spring properties, and the crane can be removed from an open state. Providing a crane joint structure that can be slightly pushed open in the direction. A joint (4) is formed by bending a wire having excellent spring properties into a ring shape, one end of which is fixed to a front portion side and a shaft (10) extending upward is provided at the tip of the ring inside the frame. Has a notch 12 on the outside 13 except for an end portion 14, and a shaft hole 11 extends upward on the lower surface of the end portion. The shaft 5 of the joint 4 is fitted into the shaft hole 11 and the crane 5 is mounted.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a crane joint structure of a spectacle frame that can be stably mounted without rattling.

[0002]

[Prior art]

 The vine of a general glasses frame is foldably connected via a hinge. The yolo is brazed to the outside of the rim on which the lens is fitted, and the two hinge pieces that form the hinge are brazed to the inside surfaces of the ends of the yoro and the vine, and the yoro is fixed to the front fixed to the yolo. Crane can be folded. However, a vine connected via a small hinge cannot sustain a stable folding operation forever. In other words, small hinges loosen their shaft screws or wear the sliding surfaces, causing looseness, resulting in poor stability of the vine, and causing the glasses worn to be displaced and sometimes dislodged.

[0003] In addition, the hinge is small in size, and its manufacture is troublesome. Further, the most opened state is substantially in line with the side piece of the L-shaped coil, and the hinge structure is not opened any more. . Of course, if you just wear glasses on your face, the opening of the vine is enough, and since the vine has some spring properties, it can be slightly curved and fitted to your face.

[0004] However, it is only for a short period of time after the purchase of the glasses that the user fits the face only with the spring characteristics of the vine and the glasses worn on the face do not shift. The spring characteristics of the crane itself are always constant depending on the material as long as it is not extremely bent and plastically deformed, and can return to the original shape if the force is removed, but the hinge connecting the crane as described above In the conventional joint structure of a vine using only hinges, there is no means to absorb the impact force when a certain impact is applied to the front frame. In some cases, the lens may be damaged or the frame itself may be bent.

By the way, as one means for solving such a problem of the eyeglass frame, a joint structure in which the vine can be opened slightly more outwardly from the straight state with the side piece is desired. Used in FIG. 5 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 a fixed butterfly (b) is brazed and fixed to the yoke (a), and the other butterfly is used as a sliding butterfly (c) to slide for a certain distance. Forgiveness can give the vine (d) an outward opening.

A guide groove is formed in the vine (d), and the sliding butterfly (c) slides using the guide groove as a guide. A coil spring is provided in the internal cavity of the sliding butterfly (c). When (4) is settled and the vine (4) is opened outward, the sliding butterfly (5) is pulled toward the fixed butterfly (5) and compressed. The coil spring (e) hits the claw (g) provided at the entrance of the internal cavity of the sliding butterfly (c) and locked in the slot (f) of the vine (d), and the claw (g) functions as a stopper. are doing. As a result, the restoring force of the coil spring (e) acts on the vine (d) and attempts to return the vine (d) to its original position.

By the way, the hinge structure in which the coil spring (e) is incorporated in the sliding butterfly piece (c) is complicated as shown in the figure, so that the number of manufacturing steps is increased, and the cost is high. It becomes a hinge. In addition, there is a problem that it is easy to break down due to the complicated structure, and it is difficult to repair once it breaks down. If the coil spring (e) and the core metal are pushed into the internal cavity of the sliding butterfly piece (c) and locked on the claw (g), the claw (g) and the coil spring (e) cannot be removed.

That is, while the pawl (g) is restrained by the guide of the sliding butterfly (c), the locking piece (h) of the pawl (g) fits into the slot (f), and the head of the cored bar. (I) comes into contact with the tab (G) with a spring force, and a force acts to push the locking piece (H) into the slot (F). Therefore, the nail (g) cannot be removed from the sliding butterfly (c), and at the same time, repair cannot be performed.

[0009]

[Problems to be solved by the invention]

 As described above, the conventional crane joint structure has the above-described problems. The problem to be solved by the present invention is this problem.It is not possible to fold the crane and bend outwards through a joint formed by bending a wire without using a general joint such as a hinge. Provided is a crane joint structure for a spectacle frame.

[0010]

[Means for solving the problem]

 The crane joint structure of the eyeglass frame of the present invention is formed by bending a wire having excellent spring properties into a ring shape, and has a shaft extending upward at its tip. The shaft is located inside the ring, and fits into a shaft hole provided at the end of the crane to connect the crane. There, the vine is folded about the axis, and the vine is pushed outward from the open state.

A notch is provided on the outside of the crane, and a slit groove with which a joint wire is engaged is formed on an end face of the crane and a side surface connected to the notch. The shaft of the joint is fitted into a shaft hole provided on the lower surface of the end of the crane, and the wire is attached to the joint by engaging the wire with the slit groove formed in the crane.

When the crane is folded, the wire of the joint engages with the slit groove formed on the end face, and when the crane is open, it engages with the slit groove formed on the outer face of the end. I have. The tip of the ring-shaped joint is located in a notch groove provided on the side surface of the vine, and when the vine is pushed outward, the fitting can be fitted in the notch groove, and the shaft bends inward. The spring force accompanying the bending acts on the crane. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0013]

【Example】

 FIG. 1 is an embodiment showing an eyeglass frame to which a crane is attached using the crane joint structure of the present invention. The two rims 1 and 1 are brazed to both ends of the connecting member 2, and outside the rims 1 and 1, roughly L-shaped yoroles 3 and 3 are attached by brazing. A crane 5 is attached to the joint 4 attached to the tip of the yoke so that the crane 5 can be folded. Further, nose pads 6 and 6 are attached to the inside of the rims 1 and 1 and below the connecting member 2.

The joint 4 is formed by bending a wire having excellent spring properties into a ring shape, and one end of the joint 4 is brazed to the yoro 3 and the crane 5 is attached to the other end of the joint 4. ing. FIG. 2 is an enlarged view showing the joint 4, and has a substantially horizontally long ring shape. That is, the upper horizontal piece 8 to which the one end 7 is fixed to the yoke 3 is curved downward at the distal end, and the lower horizontal piece 9 is provided in parallel with the upper horizontal piece 8, and the upper end of the lower horizontal piece 9 has A shaft 10 protruding in the direction is provided.

FIG. 3 is an enlarged view showing the crane 5, wherein a shaft hole 11 extends upward from below at an end portion 14, and a cutout portion 12 is provided at a crane outside 13. . A slit groove 16 into which a wire constituting the joint 4 fits is continuously formed on the outside and the end face 15 of the crane end portion 14.

Meanwhile, one end 7 of the joint 4 shown in FIG. 2 is brazed to the tip of the yoke 3, and a crane 5 is attached to a shaft 10 of the joint 4. That is, the shaft 10 is fitted into the shaft hole 11 provided in the end 14 of the crane 5, and the crane 5 can be turned around the shaft 10, folded and opened. FIG. 1 shows a state in which the crane 5 attached to the shaft 10 of the joint 4 is open. From this state, the crane 5 is slightly pushed outward to open.

FIG. 4 shows the relationship between the open / close state of the crane 5 and the joint 4. FIG. 4A shows a state in which the crane 5 is open, and the crane 5 is attached to the shaft 10 of the joint 4. . In this case, the shaft 10 is fitted in the shaft hole 11 of the crane end portion 14, but the upper horizontal piece 8 is engaged with the slit groove 16 formed on the outside end 132. The shaft 10 of the joint 4 is in contact with the upper horizontal piece 8 as shown in FIG. 2, but is separated from the upper horizontal piece 8 when fitted into the end shaft hole 11.

That is, the joint 4 is in a spring-deformed state, and a restoring force of the spring acts on the shaft 10 in a direction approaching the upper horizontal piece 8, and the upper horizontal piece 8 is pressed against the end slit groove 16. The crane 5 is stable without rattling. (b) shows the case where the crane 5 is folded. In this state, the upper horizontal piece 8 engages with the slit groove 16 of the end face 15 to exert the restoring force of the spring. Therefore, the crane 5 in the folded state is stable without rattling.

Here, the slit groove 16 formed on the outer end 13 and the slit groove 16 formed on the end surface 15 are continuous, but from the open state shown in FIG. When the crane 5 is folded in the state shown in FIG. 7, the bending of the shaft 10 once increases because the upper horizontal piece 8 passes through the corner of the end portion 14. Of course, the same applies to the case of opening from the state shown in (b) to the state of (a). In order to minimize the deflection of the shaft 10 in the states of (a) and (b), the crane 5 is in any state. It is stable even if there is.

FIG. 3C shows a case where the vine 5 is slightly pushed outward from the state shown in FIG. In the state of (a), the upper horizontal piece 8 is engaged with the slit groove 16. However, if the vine 5 is pushed outward, a gap is generated on the end face side, and the vine 5 starts from the end corner 17. Turns. As a result, the shaft 10 is further separated from the upper horizontal piece 8, and the restoring force of the spring is increased to act to return the crane 5 to the original state shown in FIG. That is, it can exhibit the same function as the conventional spring hinge.

As described above, the crane joint structure according to the present invention is formed by bending a wire having excellent spring properties into a ring shape, providing a shaft at the end of the ring, and fitting the shaft hole formed in the crane into the shaft. The following effects can be obtained.

[0022]

[Effect of the invention]

 The crane joint structure according to the present invention uses a joint formed by bending a spring wire, and is configured such that a crane is attached to a shaft of the joint and the crane can be opened and closed around the shaft. . As described above, since the joint of the present invention has a simple shape just by bending a wire, the manufacturing cost is lower than that of a conventional joint. And this joint has the same function as a spring hinge that can not only open and close the vine but also push it open slightly from the open state, but its structure is very much compared to the conventional complicated spring hinge. And the manufacturing cost is significantly lower. Further, since the spring force of the joint made of a wire is constantly applied to the vine, the vine is stable without rattling in the open state and the folded closed state.

[Brief description of the drawings]

FIG. 1 is an embodiment showing a crane joint structure of an eyeglass frame according to the present invention.

FIG. 2 is a specific example of a joint formed by bending a wire.

FIG. 3 is a specific example of a vine.

FIG. 4 is a joint for opening and closing the vine.

FIG. 5 shows a conventional spring hinge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rim 2 Connecting member 3 Yoroi 4 Joint 5 Crane 6 Nose pad 7 One end 8 Upper side piece 9 Lower side piece 10 Shaft 11 Shaft hole 12 Notch 13 Outside 14 End part 15 End face 16 Slit groove 17 Corner

Claims (2)

[Utility model registration claims] In a joint structure of a crane attached to both sides of a front portion of eyeglasses, a joint is formed by bending a wire having excellent spring properties into a ring shape, one end of which is fixed to a front portion side and a ring tip. A shaft extending upward is provided inside the frame, the vine has a cutout on the outside except for the end, a shaft hole extends upward on the lower surface of the end, and a slit is formed from the outside of the end to the end surface. A crane joint structure for an eyeglass frame, wherein a groove is formed, a shaft of a joint is fitted in the shaft hole of the crane, and a wire is engaged in the slit groove. 2. A crane joint structure for an eyeglass frame according to claim 1, wherein a ring provided on said joint is horizontally long, and an upper horizontal piece is engaged with a slit groove formed in the crane.