JPH1124006A - Spring hinge mechanism of spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring hinge mechanism of spectacles which is extremely simple in structure and facilitates assembling operation. SOLUTION: The hinge mechanism which couples barrel pieces 30 at end parts of brackets on both the right and left ends of a spectacle front frame and the opposite barrel piece 30 at the base end part of ear hook temple 3 has a spring body 5 arranged inside the bracket 2, and the tip 51 of the spring body 5 is run through the root of the barrel piece to face the base end part of the outside temple 3 of the spectacles, so that when the temple 3 is spread, the base end part of the temple 3 is brought into elastic contact with the tip 51 of the spring body 5 to energize the temple 3 in the folding direction. Consequently, the structure is not made complicated unlike a conventional coil spring built-in type spring hinge and large trouble is not needed for the assembling operation to provide the spring hinge at low price.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring hinge mechanism for spectacles, and more particularly, to a spring hinge mechanism capable of elastically expanding an ear-hook temple outward from a normally opened state. It is.

[0002]

2. Description of the Related Art As is well known, when putting on and taking off eyeglasses, the free end side of the ear-hook temple tends to be inevitably expanded outward, whereby a large force is applied to the base end portion of the temple to cause eyeglasses. It is easy to cause failure and deformation of the frame. Conventionally, proposals to eliminate such adverse effects include:
There is a so-called "spring hinge" in which one piece of a hinge mechanism for hinge-connecting a front frame and a temple is configured to be elastically movable forward and backward by a coil spring provided at a base end of the temple.

[0003] However, the conventional spring hinge has been assembled with a coil spring and other parts installed inside the hinge mechanism in order to realize this temple elastic expansion. In fact, the components have been miniaturized, and the assembling work has been extremely troublesome, resulting in a high manufacturing cost of the spring hinge.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the conventional spring hinge, and has an extremely simple structure and easy assembling work. A technical object is to provide a spring hinge mechanism for spectacles that can be used.

[0005]

SUMMARY OF THE INVENTION In order to solve the above technical problem, the present invention is based on a base piece 20 and an ear hanging temple 3 provided at the ends of brackets 2 at both right and left ends of an eyeglass front frame 1. A hinge mechanism for spectacles for hingedly connecting a counter piece piece 30 provided at an end thereof with a hinge screw 4 so as to be rotatable. A spring body 5 is disposed inside the bracket 2, and this spring body is provided. 5
The front end 51 of the earpiece temple 3 is exposed to the vicinity of the base end of the ear hook temple 3 outside the spectacles through the base of the piece 20 so that the base end of the ear hook temple 3 is connected to the tip of the spring body 5 when the ear hook temple is expanded. A technical means is adopted in which the ear-hook temple 3 is urged in the folding direction by using the bending elastic force of the spring body 5 by pressing against the spring 51.

In order to solve the above-mentioned technical problem, the present invention provides a bracket 2 at both left and right ends of a front frame 1 for eyeglasses.
A hinge mechanism rotatably hinged to a piece piece 20 provided at an end of the eyepiece and a counter piece piece 30 provided at a base end of the ear hanging temple 3 by means of a hinge screw 4; 2 is composed of bracket splitting members 2A and 2B that can be divided into upper and lower portions, and a fastening projection 50 at the base end of the spring body 5 is formed in a fastening groove 21 formed in at least one of the bracket splitting members 2A and 2B. And the spring body 5 is detachably disposed inside the bracket 2 by sandwiching the spring body 5 between the bracket splitting members 2A and 2B.
The front end 51 of the spring body 5 is connected to the base 51 of the ear hook temple 3 when the ear hook temple is expanded by causing the base 51 to face the base end of the ear hook temple 3 outside the glasses through the base of the piece 20.
And using the bending elastic force of the spring body 5 to urge the ear hook temple 3 in the folding direction.

Further, in order to solve the above-mentioned technical problem, the present invention provides a piece 20 provided at the ends of the brackets 2 at the right and left ends of the front frame 1 of the glasses and a base end of the ear hook temple 3. A hinge mechanism for eyeglasses, which hinges the opposite piece piece 30 to a hinge by a hinge screw 4;
The spring body 6 is brazed to the inside of the
The front end 61 of the earpiece temple 3 is exposed to the base end of the ear hook temple 3 outside the glasses through the base of the piece 20 so that the base end of the ear hook temple 3 is connected to the tip of the spring body 6 when the ear hook temple is expanded.
A technical means is adopted in which the ear hook temple 3 is urged in the folding direction by using the bending elastic force of the spring body 6 when pressed against the spring 61.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings. 1 is an overall plan view of an eyeglass frame to which the spring hinge mechanism of the first embodiment is applied, FIG. 2 is an exploded perspective view of a main part of the spring hinge mechanism, and FIGS. 3 and 4 are spring hinge mechanisms. FIG. 5 is a sectional view showing the operation of the first embodiment.
FIG. 6 is an exploded perspective view of an essential part of a modification of the spring hinge mechanism of the embodiment, and FIG. 6 is a sectional view of the spring hinge mechanism of this modification. FIG. 7 is a perspective view of a main part of a spring hinge mechanism according to a second embodiment of the present invention, and FIGS. 8 and 9 are cross-sectional views showing the operation of the spring hinge mechanism.

[First Embodiment] In FIG. 1, what is indicated by reference numeral 1 is a pair of rims 11, 11 which are connected symmetrically by a bridge 12 to the left and right of the spectacles front frame. Brackets 2 are brazed to both ends. The reference numeral 3 indicates an ear-hook temple hinged to the end of the bracket 2 on the take-out side, and the reference numeral 13 indicates brazing to the opposing inner side of the rims 11. It is a bonded nose pad.

The spring hinge mechanism of the present embodiment comprises a hinge piece 4 provided at the end of the bracket 2 on the take-out side and a counterpiece piece 30 provided at the base end of the ear hook temple 3. On the technical premise of a conventionally known hinge mechanism rotatably hinged by a hinge mechanism, a spring body 5 is cleverly arranged on the hinge mechanism without complicating the structure, and the spring body 5 is bent. It is characterized in that the ear hook temple 3 can be elastically expanded outward from a normally opened state by utilizing elastic force.

That is, in the spring hinge mechanism of the present embodiment, as shown in FIG. 2, a spring body 5 which can be bent and deformed is detachably mounted inside the bracket 2 and has a spring tip 51.
Are provided so as to pass through the base portion of the piece 20 of the bracket 2 and face the outside of the glasses.

More specifically, the bracket 2 of the present embodiment is configured in a splitting manner by bracket splitting members 2A and 2B which can be divided into upper and lower parts by removing the small screws 23. One piece 20 is provided at each end of 2A and 2B to form two pieces. Near the base end of the lower bracket split member 2B, a dovetail-shaped fastening groove 21 having a groove width expanding toward the outside of the bracket is formed, and an upper portion of the inner side of the bracket split member 2B is formed. A single groove-shaped joining groove 22 is formed from the fastening groove 21 along the longitudinal direction. In FIG. 2, the ear hanging temple provided with the counter piece 30 is not shown.

On the other hand, the spring body 5 of the present embodiment is formed of a slightly curved β-phase titanium alloy material. A dovetail-shaped fastening projection 50 that can be fitted to 21 is formed,
The distal end 51 of the spring body 5 is bent at a substantially right angle in the outward direction of the curve.

The spring body 5 is connected to the bracket split member 2B.
The fitting protrusion 50 at the base end is fitted into the fitting groove 21 while being joined to the fitting groove 22 of the above. By stopping, the spring body 5 is attached to the bracket 2 with the front end 51 facing the outside of the glasses through the base of the piece 20.
It is arranged detachably in the inside part of.

With this configuration, when the ear-hook temple 3 is normally opened to use the glasses, as shown in FIG.
The base end of the ear-hook temple 3 comes into contact with the distal end 51 of the spring body 5. If the ear-hook temple 3 is further expanded outward from this state, as shown in FIG. The distal end 51 of the spring body 5 is pressed by the base end, so that the spring body 5 is bent and deformed. This bent and deformed spring body 5
Due to the elastic repulsion force, the ear-hook temple 3 is urged in the folding direction, so that the ear-hook temple 3 can be elastically expanded.

As described above, in the spring hinge mechanism of the present embodiment, the piece 20 of the bracket 2 and the counter piece 30 of the ear hanging temple 3 are hinged to each other by the hinge screw 4 in a conventionally known manner. Since it is assembled with a very simple configuration in which the spring body 5 is added to the hinge mechanism, each component can be miniaturized as in a conventional spring hinge with a built-in coil spring, and it takes time to assemble it. The spring hinge can be manufactured at low cost.

Further, the spring hinge mechanism of the present embodiment uses the tip 51 of the spring body 5 disposed inside the bracket 2 as a piece.
Since it is taken out to the vicinity of the base end of the ear hook temple 3 outside the eyeglasses through the base portion of 20, the certain spring effective length for exerting the appropriate temple tightening force that is not too strong is reasonably secured. be able to. On the other hand, conventionally, in order to obtain a constant effective spring length, the hinge mechanism has to be enlarged and enlarged, and the design of the glasses is impaired.

Further, in the spring hinge mechanism of the present embodiment, since the spring body 5 is detachably provided on the inner side of the bracket 2, replacement of the spring body 5 due to, for example, abrasion of the tip 51 is also easy. And the durability of the glasses can be improved. In the present embodiment, the spring 5
Since the fastening projections 50 are exposed on the outer surface of the bracket 2, the decorative effect of the spring body 5 can be expected, and the spring body 5 can be replaced according to the user's preference or according to the TPO. It is also possible.

Further, in the spring hinge mechanism of the present embodiment, the body of the spring body 5 is joined to the single groove-shaped joining groove 22 formed in the bracket split member 2B, whereby the spring body is joined. Since the spring 5 is buried in the inner part of the bracket 2, the spring body 5 does not stand out in the inner part of the bracket 2, and the spring hinge mechanism can be prevented from being enlarged and enlarged.

In the spring hinge mechanism of the present embodiment, as shown in FIGS. 5 and 6, an auxiliary spring body 7 can be arranged on the opposite piece 30 at the base end of the ear hanging temple 3. It is. That is, a leaf spring-like auxiliary spring body 7 is provided on the peripheral edge of a pair of upper and lower disks 70, 70 having substantially the same interval as the thickness of the counterpart piece 30, and between the disks 70, 70. The auxiliary spring body 7 is disposed with the spring tip 71 facing the outside of the spectacles by fitting the 30 in. In FIG. 5, the ear hanging temple provided with the counter piece 30 is not shown.

With this configuration, as shown in FIG. 6, when the ear-hanging temple 3 is normally opened to use the glasses,
The base end of the ear-hook temple 3 comes into contact with the tip 51 of the spring body 5 and also with the tip 71 of the auxiliary spring body 7. In this case, the distal end 51 of the spring body 5 and the distal end 71 of the auxiliary spring body 7 are simultaneously pressed by the base end of the ear hanging temple 3, and the spring body 5 and the auxiliary spring body 7 are bent. Be transformed. The ear hook temple 3 is urged in the folding direction by the elastic repulsive force of the bent and deformed spring body 5 and auxiliary spring body 7.

As described above, in the embodiment shown in FIGS. 5 and 6, in addition to the elastic force of the spring body 5, the auxiliary spring body 7
The elastic force of (1) can be used, so that the attachment / detachment of the auxiliary spring body 7 makes it possible to adjust the temple tightening force on the side of the head. It is possible to easily adjust the temple tightening force.

[Second Embodiment] A spring hinge mechanism according to a second embodiment shown in FIGS. 7 to 9 has a spring body 6 that enables elastic expansion of a temple brazed to the inside of the bracket 2 and joined thereto. There is a feature in the point.

That is, as shown in FIG. 7, the spring body 6 of the present embodiment is formed of a substantially C-shaped β-phase titanium alloy material, and is brazed and joined to the inner part of the integral bracket 2. After being taken out at a substantially right angle from the inside portion, the spring distal end 61 faces the base end of the ear hanging temple 3 outside the glasses through the base of the piece 20 of the bracket 2.

With this configuration, when the ear-hook temple 3 is normally opened to use the glasses, as shown in FIG.
The base end of the ear-hook temple 3 comes into contact with the distal end 61 of the spring body 6. If the ear-hook temple 3 is further expanded outward from this state, as shown in FIG. The tip of the spring body 6 is pressed by the portion, and the spring body 6 is bent and deformed. The elastic repulsive force of the bent and deformed spring body 6 urges the ear hook temple 3 in the folding direction, so that the ear hook temple 3 can be elastically expanded.

As described above, in the spring hinge mechanism of the present embodiment, the spring body 6 is brazed to the inner portion of the bracket 2 and disposed, so that the spring hinge mechanism is further simplified. And the assembling work is further facilitated. In this embodiment, similarly to the first embodiment, it is a matter of course that an auxiliary spring body can be provided on the opposite piece 30 of the ear hanging temple 3.

[0027]

As described above with reference to the embodiments, in the spring hinge mechanism according to the present invention, the bracket piece and the counterpiece piece of the ear temple are hinged to each other by hinge screws. It is assembled with an extremely simple configuration that simply adds a spring body to the hinge mechanism of the above, so the configuration is complicated and each part is miniaturized like the conventional spring hinge with a built-in coil spring, and the assembly work The spring hinge can be provided at low cost without requiring much trouble.

Further, in the spring hinge mechanism of the present invention, the tip of the spring body disposed inside the bracket is taken out through the base of the piece to the vicinity of the base end of the ear hanging temple outside the glasses. , A certain spring effective length can be reasonably secured to exert a moderate temple tightening force that is not too strong, and there is no need to enlarge and enlarge the hinge mechanism as in the past, The design of the glasses is not impaired.

[Brief description of the drawings]

FIG. 1 is an overall plan view of an eyeglass frame to which a spring hinge mechanism according to a first embodiment is applied.

FIG. 2 is an exploded perspective view of a main part of the spring hinge mechanism of the first embodiment.

FIG. 3 is a sectional view showing the operation of the spring hinge mechanism.

FIG. 4 is a sectional view showing the operation of the spring hinge mechanism.

FIG. 5 is an exploded perspective view of a main part of an embodiment of the spring hinge mechanism according to the first embodiment;

FIG. 6 is a sectional view of a spring hinge mechanism according to a modified example.

FIG. 7 is a perspective view of a main part of a spring hinge mechanism according to a second embodiment of the present invention.

FIG. 8 is a cross-sectional view illustrating an operation of a spring hinge mechanism according to a second embodiment.

FIG. 9 is a cross-sectional view illustrating an operation of a spring hinge mechanism according to the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Glasses front frame 2 Bracket 2A / 2B Bracket splitting member 20 Piece 21 Fixing groove 3 Ear hanging temple 30 Multi piece piece 4 Hinge screw 5 Spring body 50 (Spring body) fastening projection 51 (Spring body) tip 6 Spring body 61 (of spring body) 7 Auxiliary spring body 71 (of spring body)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Morizou Ochida 82 characters, 31 Shinocho, Fukui City, Fukui Prefecture Inside Mitani Optical Co., Ltd. (72) Inventor Hiroshi Kataoka 82 characters, 31 Shinocho, Fukui City, Fukui Prefecture Mitani Corporation In optical

Claims (4)

[Claims] 1. A piece piece 20 provided at an end of a bracket 2 at both right and left ends of a front frame 1 of an eyeglass and a counter piece piece 30 provided at a base end of an ear-hanging temple 3 are rotatable by a hinge screw 4. A hinge mechanism for hinged eyeglasses, wherein a spring body 5 is disposed inside the bracket 2, and the tip 51 of the spring body 5 is passed through the base of the piece 20 to the ear-hook temple 3 outside the eyeglasses. When the ear-hook temple is expanded, the base end of the ear-hook temple 3 is pressed against the distal end 51 of the spring body 5 to utilize the bending elastic force of the spring body 5 when the ear-hook temple is expanded. A spring hinge mechanism for eyeglasses, wherein the hanging temple 3 is biased in a folding direction. 2. A piece piece 20 provided at the end of the bracket 2 at each of the right and left ends of the front frame 1 of the spectacles and a counter piece piece 30 provided at the base end of the ear hanging temple 3 are rotatable by hinge screws 4. A hinge mechanism for eyeglasses hinge-coupled to the bracket 2, wherein the bracket 2 is composed of bracket split members 2A and 2B that can be divided into upper and lower parts, and a fastening formed on at least one of the bracket split members 2A and 2B. Groove 21
A fixing projection 50 at the base end of the spring body 5 is fitted to the spring body 5, and the spring body 5 is sandwiched between the bracket splitting members 2 </ b> A and 2 </ b> B, so that the spring body 5 is removably disposed inside the bracket 2. The front end 51 of the spring body 5 is made to approach the base end of the ear-hook temple 3 outside the glasses through the base of the piece 20 so that the base end of the ear-hook temple 3 is expanded when the ear-hook temple is expanded. A spring hinge mechanism for eyeglasses, wherein a tip 51 of a spring body 5 is pressed to bias the ear hook temple 3 in a folding direction by using a bending elastic force of the spring body 5. 3. A piece piece 20 provided at the end of the bracket 2 at each of the right and left ends of the front frame 1 of the spectacles and a counter piece piece 30 provided at the base end of the ear hanging temple 3 are rotatable by the hinge screw 4. A hinge mechanism for hinged eyeglasses, wherein a spring body 6 is brazed to an inner portion of the bracket 2, and a tip 61 of the spring body 6 is passed through the base of the piece 20, and an ear-hook temple on the outside of the eyeglasses. 3, when the ear-hook temple is expanded, the base end of the ear-hook temple 3 is pressed against the distal end 61 of the spring body 6 to utilize the bending elastic force of the spring body 6. A spring hinge mechanism for eyeglasses, wherein the hanging temple 3 is biased in a folding direction. 4. An auxiliary spring body 7 is provided on a counter piece 30 provided at the base end of the ear hook temple 3, so that the base end of the ear hook temple 3 is supported by the auxiliary spring when the ear hook temple is expanded. 4. The ear temple 3 is urged in the folding direction by using a bending elastic force of the auxiliary spring body 7 by being pressed against a tip end 71 of the body 7. A spring hinge mechanism for eyeglasses according to any one of the above.