JP2001154158A - Spectacles and temples of spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide spectacle temples which are mounted to both sides of the front part of spectacles and have the same function as the function of spring hinges capable of forcedly opening the temples slightly beyond a prescribed opening angle. SOLUTION: The base ends of the temples are branched to connected base end pieces 7 connected to wraparound endpieces 3 soldered to tube and free end pieces 8 abutting on engaging parts 12 of the wraparound endpieces. The free end pieces 8 are deflected and deformed by coming into contact with engaging parts 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to eyeglasses to which a spring force is applied when a vine is opened, and to the vine.

[0002]

2. Description of the Related Art The vine of a general glasses frame is foldably connected via a hinge. The yoroi is brazed to the rim holding the lens, the two wings forming the hinge are brazed to the inner surfaces of the ends of the yoroi and the vine, and the vine folds against the fixed yoroi. I can do it. However, a vine connected via a small hinge cannot maintain a stable folding operation. That is,
A small hinge loosens its shaft screw or wears the sliding surface, and as a result, loses the stability of the vine,
The worn glasses are displaced or come off.

[0003] In addition, the hinge is small in size, and its manufacture is troublesome. In addition, the degree of opening of the vine is restricted so as not to exceed a predetermined angle. Of course, if you only wear glasses, the opening degree of the vine is sufficient, and since the vine has some spring properties, it can be slightly curved to fit the face.

[0004] However, it is only for a short period of time after purchasing the glasses that the glasses worn by fitting to the face only with the spring characteristics of the vine are not rattled, and the spring characteristics of the vine itself are extremely bent and plastic. As long as it is not deformed, it is always constant depending on the material, and if you remove the force, you can return to the original shape,
In order to cause backlash in the hinge connecting the vine as described above, in the conventional joint structure of the vine using only the hinge, when any impact is applied to the front part, there is no means for absorbing the impact. Also, the glasses may fall off the face, the lenses may be damaged, and sometimes the frame itself may be bent.

[0005] As a means for solving such problems of the eyeglass frame, a joint structure that allows the crane to slightly open outward from a predetermined opening degree is desired, and is used in part. FIG. 4 shows a conventional example of this joint structure, which is called a spring hinge. In other words, the basic idea of spring hinges is that
(B) is fixed by brazing, and the other butterfly is used as a sliding butterfly (c) to allow sliding for a certain distance, so that the vine (d) can be opened outward.

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

Incidentally, the hinge structure in which the coil spring is built in the sliding hinge (c) is complicated, so that the number of manufacturing steps is increased, and the spring hinge is expensive in terms of cost. In addition, there is also a problem that the structure is complicated, so that it is easily broken, and once broken, it is difficult to repair. Push the coil spring (e) and core into the internal cavity of the sliding butterfly (c)
If the hook is locked in place, 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) is inserted into the slot (f).
, And the head of the metal core comes into contact with the vine with spring force, and a force acts to push the locking piece into the slot. Therefore, the nail cannot be removed from the sliding butterfly piece (c), and at the same time, repair cannot be performed.

[0009]

As described above, the conventional crane joint structure for an eyeglass frame has the above-mentioned problems. The problems to be solved by the present invention are these problems. The present invention provides glasses having a crane joint structure which is extremely simple in structure and does not break down, and a crane for glasses.

[0010]

SUMMARY OF THE INVENTION The glasses according to the present invention are so constructed that the crane can be pushed open slightly more outward than a predetermined degree of opening, and the function of the crane is that of a crane attached by a conventional spring hinge. Is the same as Therefore, the crane of the present invention branches off the base end, and one base end piece (connecting base end piece) is attached to the yoke on the front part via a joint, so that the crane can be folded. Then, the other base end piece (free base end piece) is in a free state, and bends and deforms so that the distance from the one base end piece can be increased.

On both sides of the front part of the eyeglasses, a royal is provided, and to this royal, a one-side base end piece of a crane is attached via a joint. Further, the yoke has an engaging portion, and a free base end piece of the crane can be engaged with the engaging portion. When the free base end piece engages with the engaging portion and is pressed, the free proximal end piece is bent and deformed, and a spring force is generated. This engaging part is a kind of stopper, and the opening of the vine is regulated by the free base end piece hitting this engaging part, but the free base end piece may be deformed (spring deformed). To be able to do this, the vine is pushed open slightly from a certain degree of opening. That is, it can have the same function as the conventional spring hinge. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0012]

FIG. 1 shows an embodiment of a part of an eyeglass frame according to the present invention. In FIG. 1, reference numeral 1 denotes a rim, reference numeral 2 denotes a connecting member, reference numeral 3 denotes a yoke, and reference numeral 4 denotes a crane. The rims 1 and 1 are connecting members 2
The royal 3 is brazed to the outside of the rim 1, and a crane 4 is attached to the royal 3 via a shaft pin 5 so as to be foldable. A nose pad 6 is attached to the inside of the rim 1.

FIG. 2 is a specific example showing the crane 4 of the present invention. The crane 4 is manufactured by punching a metal plate material having a constant thickness, and a resin modern is actually inserted into a tip portion thereof. As shown in the figure, the base end is branched into two, one is a connecting base end piece 7 and the other is a free base end piece 8. A pin hole 9 is formed at the distal end of the connecting base end piece 7.

Here, the shaft pin 5 can be inserted into a pin hole 9 formed at the distal end of the connecting base end piece 7 to be connected to the yoke 3, and the crane 4 pivots about the pin hole 9. And folded. One free base piece 8 is formed along the connecting base piece 7 and has a space 10 therebetween,
If a force F acts on the distal end of the free proximal end piece 8, the free proximal end piece 8 can flex and deform.

FIG. 3 shows a case in which the tool 4 is mounted. The shaft pin 5 is inserted into the distal end pin hole 9 of the connecting base end piece 7 and mounted on the yoke 3. In FIG. 1, covers 11a and 11b are attached to the upper and lower surfaces of the yoke 3, and a free base end piece 8 is fitted between the covers 11a and 11b. The yoke 3 is made of a thin plate material, and the tip of the free base end piece 8 abuts on the engagement portion 12 of the yoke 3. Therefore, the crane 4 can be stopped at a predetermined opening degree,
The engaging portion 12 is sandwiched between the covers 11a and 11b.
Never get out of the way.

By the way, when putting on the glasses, the crane 4 is opened until the tip of the free base end piece 8 comes into contact with the engaging portion 12 of the yoke 3, and the crane 4 can be stopped at that position. The connecting base end piece 7 is simply connected by the shaft pin 5, and the joint formed by the shaft pin 5 does not have a function of restricting the degree of opening of the crane 4.
The opening of the crane 4 is determined by contacting the tip of the crane 4 with the engaging portion 12 of the yoke 3.

Moreover, the crane 4 can be further pushed outward from the state in which the tip of the free base end piece 8 is in contact with the engaging portion 12, and in this case, the free base end piece 8 is moved outward. It will bend. That is, the free base end piece 8 is deformed by the reaction force F when the front end hits the engagement portion 12. The bending deformation of the free base end piece 8 acts as a force for returning the crane 4 to its original position in order to generate a spring force. That is, although it has a very simple structure, the same operation and effect as those of the conventional spring hinge can be exhibited.

In this embodiment, the case where the crane 4 is manufactured by stamping out a plate material has been described. However, a forged crane as in the related art can be used. In this case, if the free base end piece cannot be integrally formed, a leaf spring is fixed to the tip of the vine. Of course, it is not necessary to limit to a leaf spring, but it must be able to regulate the degree of opening of the vine when the distal end of the connecting base end piece is connected by a shaft pin.

As described above, in the eyeglasses of the present invention, the base end portion of the vine is branched to provide a connecting base end piece and a free base end piece, and the connecting base end piece is pivotally connected to the pivot pin. , And the distal end of the free base end piece can be brought into contact with the engagement portion of the yoke. The following effects can be obtained.

[0020]

According to the present invention, the eyeglasses of the present invention have the base end of the crane branched, and the tip of one free base end piece can be brought into contact with the engagement portion of the yoro. That is, the vine has a simple joint structure in which the vine is simply connected by a shaft pin, but the degree of opening of the vine is determined by bringing the tip of the free base end piece into contact with the engagement portion of the yoro. And since this free base end piece can be bent and deformed, it is possible to push it further outward from the state where the tip is in contact with the engagement part, and it is functionally the same as the conventional spring hinge. It is. However, with a simple structure in which one free base end piece that branches off the base end of the vine is bent and deformed, the same operation and effect as the conventional spring hinge can be obtained, and the simple structure causes failure. Nothing to do.

[Brief description of the drawings]

FIG. 1 shows a part of the glasses of the present invention.

FIG. 2 is a specific example showing the crane of the present invention.

FIG. 3 shows the operation of the crane of the present invention.

FIG. 4 shows a conventional spring hinge.

[Description of Signs] 1 Rim 2 Connecting member 3 Yoroi 4 Crane 5 Shaft pin 6 Nose pad 7 Connecting base end piece 8 Free base end piece 9 Pin hole 10 Space 11 Cover 12 Engagement part

Claims (5)

[Claims] 1. A pair of eyeglasses which are attached to both sides of a front part so as to be foldable and can be pushed open beyond a predetermined degree of opening. The distal end of one connecting proximal end piece is connected to the yoro via a shaft pin, and the distal end of the other free proximal end piece contacts the engaging portion of the yoroi. Glasses characterized in that the free base end piece is in contact with and can be flexibly deformed. 2. The glasses according to claim 1, wherein said crane is made by stamping a metal plate material having a constant thickness, and a connecting base end piece and a free base end piece are integrally formed. 3. The glasses according to claim 1, wherein the free base end piece is separately manufactured and fixed to the crane base end. 4. A crane which is foldably attached to both sides of a front portion of eyeglasses, wherein a connecting base end piece for connecting a base end of the crane to a yoro and a free base end piece for abutting an engaging portion of the yolo. Glasses vine characterized by branching into 5. A pair of eyeglasses according to claim 4, wherein the connecting base end piece and the free base end piece are integrally formed by stamping and manufacturing a metal plate material having a constant thickness.