JP3046037U - Eyeglass spring hinge mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring hinge mechanism for eyeglasses which has a simple structure, is free from trouble for a long term, and has excellent durability. SOLUTION: At least one of the protruding members is made of a resilient material and has a fore-and-aft protruding member. The knuckle piece 21 to be taken out is mounted on the knuckle part 20 of the
The temple side knuckle 40 formed with 41 and 42 is hingedly connected to the sliding surface 41 of the temple side knuckle 40.
-The resilient opening / closing operation of the temple is enabled by the interaction between 42 and the spring-like overhang member.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a spring hinge mechanism for eyeglasses, and more particularly, to a spring hinge mechanism capable of elastically expanding the ear hook temple outward from a normally opened state.

[0002]

[Prior art]

 As is well-known, the spring hinge mechanism of the eyeglasses is further improved from a state in which the temple is normally opened by incorporating a coil spring into a hinge portion where the hinge bracket tongue and the ear hanging temple at both ends of the front frame are hinged. It is constructed so that it can be elastically expanded outward. Due to this elastic outer spreading action, the temples can be used to adequately tighten the temporal region of the spectacle wearer, and the spectacle wearing feeling becomes extremely good.In addition, the front frame of the spectacle frame due to unreasonable external force applied to the temple Deformation can be prevented.

However, in the conventional spring hinge mechanism, since a coil spring and other intermediate parts are assembled inside the hinge mechanism and assembled, the structure is significantly complicated and each part is miniaturized. The assembly work is troublesome, leading to an increase in manufacturing costs, and the parts are corroded by permeation of sweat and oils and fats of the wearer, causing a failure immediately.

[0004]

[Problems to be solved by the invention]

 The present invention has been made in view of the above-mentioned drawbacks of the conventional spring hinge mechanism, and has an extremely simple structure and a high durability for a long time without trouble. It is an object of the present invention to provide a spring hinge mechanism.

Another technical problem of the present invention is that, in addition to the above-mentioned problems, a spring for spectacles capable of elastically holding a temple in a folded state or a normally open state with respect to the spectacle front frame. The purpose is to provide a hinge mechanism.

[0006]

[Means for Solving the Problems]

 In order to solve the above technical problem, the present invention is directed to a hinge bracket to be attached to the left and right ends of the spectacle front frame 1, which has a projecting portion that branches forward and backward, and At least one of the projecting members is made of a resilient material, and the front projecting member 2 is provided with a take-out knuckle piece 21 that passes through the rear projecting member 3 and is taken out rearward. The temple-side knuckle 40 having a plurality of sliding surfaces 41 and 42 which are bent at a required angle at the abutting ends is hinged to the knuckle portion 20 of the take-out knuckle piece 21 so as to be hinged. A technical means is adopted in which an elastic opening / closing operation is enabled by an interaction between the sliding surfaces 41 and 42 of the knuckle 40 and the spring-like extension members.

In addition, in order to solve the above-mentioned problem, the present invention further includes a fastening hole 22 in the front projecting member 2 and a flange portion 23 at the base end in addition to the above-described means as necessary. A technical means is adopted in which the taken-out knuckle piece 21 is detachably protruded from the outside of the front projecting member 2 through the fastening hole 22.

[0008]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail based on an embodiment shown in the accompanying drawings. FIG. 1 is an overall plan view of an eyeglass frame to which the spring hinge mechanism of the first embodiment according to the present invention is applied, FIG. 2 is a plan view of the spring hinge mechanism in an exploded state, and FIGS. FIG. 6 is a plan view illustrating the operation of the spring hinge mechanism, FIG. 6 is a plan view illustrating a modified example of the spring hinge mechanism, and FIG. 7 is a plan view illustrating the spring hinge mechanism of the second embodiment according to the present invention. FIG. 8 is a plan view for explaining the operation of the spring hinge mechanism.

First Embodiment In FIG. 1, what is indicated by reference numeral 1 is a spectacle front frame in which a pair of rims 11 holding a lens are connected symmetrically by a bridge 12. A hinge bracket J having overhanging members 2 and 3 branched forward and backward is brazed to both left and right ends of the front frame 1, respectively.

As shown in FIG. 2, the spring hinge mechanism according to the present embodiment is configured such that the front and rear projecting members 2 and 3 protrude from the front and rear projecting members 2 via a knuckle piece 21. Knuckle part 20, a temple-side knuckle 40 formed at the base end of the temple 4, and a hinge screw 5 (see FIG. 3) for hinge-connecting the knuckle part 20 and the temple-side knuckle 40. It is configured.

The knuckle portion 20 of the present embodiment is formed at the distal end of a rod-shaped take-out knuckle piece 21 provided with a decorative flange portion 23 at a base end portion. By inserting the knuckle piece 21 into the hole 22 from the outside, the knuckle portion 20 is removably protruded from the front extension member 2 via the knuckle piece 21.

On the other hand, the temple-side knuckle 40 of the present embodiment is formed as a pair of upper and lower two-piece pieces at the base end of the temple 4, and a hinge screw is sandwiched between the one-piece piece knuckle portion 20. 5 (see FIG. 3) so as to allow hinge connection. On the tip end surface of the temple-side knuckle 40, sliding surfaces 41 and 42 that bend at a required surface angle are formed.

In addition, the rear projecting member 3 of the present embodiment is formed of a spring material, and is brazed to the inside of the base end of the front projecting member 2. An insertion hole 31 is formed substantially in the middle of the rear overhanging member 3, and the taken-out knuckle piece 21 is penetrated through the insertion hole 31 so as to be detachably attached to the front overhanging member 2. It is.

In the present embodiment, the knuckle portion 20 protruding from the front extension member 2 and the temple knuckle 40 formed at the base end of the temple 4 are hinged by the hinge screw 5, and the rear tension A spring hinge function is obtained by pressing the projecting member 3 against the sliding surfaces 41 and 42 of the temple-side knuckle 40.

That is, in the spring hinge mechanism of the present embodiment, the rear overhanging member 3 having the spring property constantly presses the temple knuckle 40 elastically. If 3 comes into contact with the sliding surface 41 of the temple-side knuckle 40 (see FIG. 3), the temple-side knuckle 40 is resiliently stabilized, and the temple 4 is held in a normally opened state with respect to the spectacle front frame 1. On the other hand, if the rear overhanging member 3 comes into contact with the other sliding surface 42 of the temple knuckle 40 (see FIG. 4), the temple knuckle 40 is elastically stabilized there again. The temple 4 is held in a folded state with respect to the spectacle front frame 1.

As shown in FIG. 5, when the temple 4 is further expanded outward from the normally opened state (see FIG. 3), the outer corner of the sliding surface 41 of the temple-side knuckle 40 Since the rear projecting member 3 is pushed against the elastic urging force, the sliding surface 41 of the temple side knuckle 40 is resilient by the elasticity of the rear projecting member 3 except for the external force for expanding the outside. Thus, the temple 4 returns to a stable state in which it abuts, and the temple 4 elastically returns to a normally opened state.

As described above, in the spring hinge mechanism of the present embodiment, the sliding surfaces 41 and 42 of the temple knuckle 40 are pressed by the rear extension member 3 provided inside the front extension member 2. Because it is assembled with an extremely simple configuration, the structure becomes complicated as with the conventional spring hinge with a built-in coil spring, and each part is miniaturized. It is possible to provide a cheap and durable spring hinge without any problem.

In the spring hinge mechanism of the present embodiment, the corner of the sliding surface 41 of the temple-side knuckle 40 pushes the rear extension member 3 when the temple 4 is expanded outward. The pushed rear protruding member 3 is deformed and finally comes into contact with the front protruding member 2 exactly. As a result, it is possible to reliably restrict the outward expanding operation of the temple 4 within a predetermined angle range.

Furthermore, in the spring hinge mechanism of the present embodiment, the take-out knuckle piece 21 having the knuckle portion 20 at the tip is detachably protruded from the front side extension member 2. The knuckle piece 21 can be easily replaced with another knuckle piece having a different length (amount taken out from the front extension member 2). Therefore, by changing the length of the taken-out knuckle piece, the position of the tip knuckle portion 20 can be changed to adjust the degree of deformation of the rear extension member 3, and the above-mentioned temple 4 at each rotation position of the temple 4 The elastic holding force and the opening / closing resistance force of the temple 4 (so-called agaki) can be appropriately adjusted and changed according to the situation.

In the spring hinge mechanism of the present embodiment, the knuckle portion 20 projects from the front overhanging members 2 at the left and right ends of the front frame 1 toward the rear of the glasses, as shown in FIG. In addition, the front overhanging member 2 and the rear overhanging member 3 may be bent at substantially their right angles to the rear of the glasses at the tips, and the knuckle portion 20 may be protruded from the front overhanging member 2 inward. good. Various design changes are possible in consideration of the design of the eyeglass frame and the like.

[Second Embodiment] A spring hinge mechanism according to a second embodiment shown in FIGS. 7 and 8 integrates a take-out knuckle piece 21 having a knuckle portion 20 at the tip and a front-side extension member 2. It is characterized in that it is formed in a symmetrical manner, and the other configuration is the same as in the first embodiment described above.

That is, as shown in FIG. 7, the front overhanging member 2 of the present embodiment is bent at a substantially right angle toward the rear of the spectacles, and the knuckle portion 20 is formed at the bent portion. Are formed continuously and integrally. The knuckle portion 20 at the tip of the take-out knuckle piece 21 passes through the insertion hole 31 formed in the rear extension member 3 and is hinged to the temple knuckle 40 of the temple 4 with the hinge screw 5. It is.

As described above, in the spring hinge mechanism of the present embodiment, the front extension member 2 and the knuckle portion 20 are integrally formed, so that the number of parts of the spring hinge mechanism is extremely reduced. Further, the mechanism can be further simplified, the assembling work can be further facilitated, and a highly durable spring hinge mechanism that can withstand long-term use can be provided.

The embodiment which is a specific example of the present invention is generally configured as described above. However, the present invention is not limited to the above-described embodiment and is described in “Claims for Registering Utility Model”. Various changes are possible.

For example, in the above-described embodiment, the rear overhanging member 3 is provided by being brazed to the inside of the front overhanging member 2. However, the present invention is not limited to this. It is good if the projecting members 2 and 3 are branched, and the rear projecting member 3 and the front projecting member 2 can be integrally formed. In the above embodiment, the rear overhanging member 3 is made of a spring material. However, the front overhanging member 2 can be made of a springy material.・ It is also possible to construct 3 from a spring material. Of course, the material is not limited to a metal material, and a synthetic resin material can be used as long as a predetermined bending elastic force can be obtained.

Further, for example, in the first embodiment, a cover member (not shown) extending to the rear overhanging member 3 is provided on the longitudinal upper and lower surfaces of the front overhanging member 2 to cover the rear overhanging member 3. You may do it. Various design changes are possible in consideration of the design of the spring hinge mechanism.

[0027]

[Effect of the invention]

 As described above in the embodiment, the spring hinge mechanism according to the present invention is assembled with an extremely simple structure in which the sliding surface of the temple knuckle is pressed by the rear extension member. As a conventional spring hinge with a built-in coil spring, the structure is complicated and each part is miniaturized.As a result, the assembly work is troublesome, there is no problem such as immediate failure, and it is inexpensive and has excellent durability. Spring hinges can be provided.

[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 of the present invention is applied.

FIG. 2 is a plan view of the spring hinge mechanism in an exploded state.

FIG. 3 is a plan view showing a state where a temple of the spring hinge mechanism is normally opened.

FIG. 4 is a plan view showing a state where a temple of the spring hinge mechanism is folded.

FIG. 5 is a plan view showing a state where a temple of the spring hinge mechanism is expanded outward.

FIG. 6 is a plan view showing a modified example of the spring hinge mechanism.

FIG. 7 is a plan view showing a spring hinge mechanism according to a second embodiment of the present invention.

FIG. 8 is a plan view showing a state where a temple of the spring hinge mechanism is expanded outward.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Glasses front frame 2 Front overhang member 20 Knuckle part 21 Take-out knuckle piece 22 Fastening hole 23 Flange 3 Rear overhang member 31 Insertion hole 4 Temple 40 Temple side knuckle 41 Sliding surface 42 Sliding surface 5 Thumb screw

Claims (2)

[Utility model registration claims] 1. A hinge bracket attached to both left and right ends of an eyeglass front frame 1, which has a projecting portion that branches forward and backward and at least one of the front and rear projecting members. Is made of a resilient material, and a take-out knuckle piece 21 is attached to the front-side overhanging member 2 and penetrated through the rear-side overhanging member 3 and taken out rearward. The knuckle portion of the take-out knuckle piece 21 The temple-side knuckle 40 having a plurality of sliding surfaces 41 and 42 that are bent at a required angle at the butted ends is hinged to the hinge 20 to connect the sliding surfaces 41 and 42 of the temple-side knuckle 40 with the springs. A spring hinge mechanism for eyeglasses, characterized in that a resilient opening / closing operation is made possible by interaction with a sexual overhang member. 2. A fastening hole 22 is formed in the front overhang member 2, and a take-out knuckle piece 21 having a flange 23 formed at a base end is secured from outside of the front overhang member 2. 2. A spring hinge mechanism for eyeglasses according to claim 1, wherein said spring hinge mechanism is detachably projected through said hole 22.