JPH073515B2 - Spectacle temple spring hinges, and eyeglasses using the spring hinges - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a spring hinge of an eyeglass temple and eyeglasses using the spring hinge. More specifically, the male and female butterfly pieces constituting the hinge are skillfully modified. However, the present invention relates to a spring hinge / spectacles for a spectacle temple that allows elastic expansion of the ear hanging temple without requiring any additional parts due to the changed shape of the male and female butterfly pieces.

[Conventional technology and technical problems to be solved]

As is well known, the free end side (temple end) of the ear hook temple is unavoidably apt to expand outwardly when trying to put on and take off the eyeglasses from the eye portion, which causes the root portion of the temple to be extended. It is likely that a large amount of stress is applied to the frame of the spectacles, causing failure or deformation. Conventionally, as a proposal to remove such a bad effect, one coil piece of the hinge that hinge-connects the front frame and the ear hook temple is equipped with a coil spring and a small iron ball, and the other coil piece of the other hinge is connected. The outer periphery of the turn plate is formed into a cam shape, and when the expanding force is applied to the hinge, the turn plate presses the small iron ball to compress the coil spring,
There is a spring hinge of an eyeglass temple that allows elastic expansion of the ear hanging temple by a predetermined angle, and the specific content thereof is disclosed in Japanese Patent Publication No. 58-13892.

However, making a spring hinge by combining a coil spring, a small iron ball, and a cam plate as disclosed in Japanese Patent Publication No. 58-13892 makes the structure remarkably complicated and reduces the efficiency of its assembling work. Therefore, it is inevitable that it will be a major factor of cost increase.

The present invention has been made in view of the fact that the above-mentioned conventional spring hinge is effective as a measure for preventing deformation and failure of the spectacle frame, and has the same or more functions as the conventional spring hinge. SUMMARY OF THE INVENTION It is a technical subject to provide an excellent spring hinge for an eyeglass temple which has a simple structure and is highly functional and durable with almost no malfunction or damage.

A technical object of the present invention is to provide a spring hinge that can be easily mass-produced industrially and can be manufactured at low cost.

Further, another technical problem of the present invention is to provide spring hinge glasses which are remarkably excellent in terms of functionality, durability and price compared with conventional products.

[Means adopted for solving the problem]

Means adopted by the inventor for solving the above technical problems will be described below with reference to the accompanying drawings.

That is, the present invention comprises a pair of male and female butterfly pieces 31 and 32 that foldably connect the ear hook temples 2 to the left and right ends of the front frame 1 of the spectacles, and the periphery of the turn plate 31a of the male butterfly piece 31. At the back end of the receiving plate 32a / 32a of the female butterfly piece 32 for receiving the turn plate 31a, the claw 31b is integrally projectingly provided on the movable end, and the middle part of the female butterfly piece 32 is arranged in the longitudinal direction. The spring 32b is integrally formed by cutting into pieces, and the projecting end of the spring 32b is made to face the moving trajectory of the hitting claw 31b in the turn plate 31a, and the male butterfly 31 is turned in a combined state. The plate 31a and the receiving plate 32a of the female butterfly piece 32 are
A hinge connecting means is adopted in which the hitting claw 31b of the male butterfly piece 31 comes into contact with the spring 32b of the female butterfly piece 32 to receive elastic repulsion when relatively rotating about the pivot 33. By doing so, the spring hinge and the spectacles that can satisfy the above-mentioned technical problems can be realized.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings. 1 is a plan view of eyeglasses of an embodiment produced by applying the present invention, FIG. 2 is an exploded perspective view of male and female butterfly pieces constituting an embodiment spring hinge according to the present invention, and FIG. Example FIG. 4 is a partially enlarged perspective view showing the spring hinge in a straight stretched state, FIG. 4 is a partially enlarged perspective view showing the spring hinge in this embodiment in a spread state, and FIG. 5 is a male and female butterfly piece portion in FIG. FIG. 6 is a partially broken perspective view showing the engagement state of the hitting claw of the turn plate and the spring of the female hinge by breaking, and FIG. 6 is a hitting claw by horizontally breaking the male and female butterfly piece part in FIG. FIG. 6 is a partially cutaway perspective view showing a state in which the spring of the female butterfly piece is bent.

In the drawing, what is designated by reference numeral 1 is a front frame having rims for fitting lenses (not shown) on the left and right. Hinge brackets 11 project from the left and right ends of the front frame 1 toward the eyepiece side, and ear hook temples 2 are hingedly connected to the brackets 11 via hinges 3 so that they can be folded and operated.

The most important item in the present invention is the configuration of the hinge 3.

That is, in the present invention, at least the female butterfly piece 32 of the hinge 3 is used.
Is required to be manufactured using a metal material having a high spring property. In this embodiment, both the male and female butterfly pieces 31 and 32 are made of beryllium copper alloy material (chemical composition: Be 1.8 to 2.05%, Ni + Co < 0.2
%, Cu balance).

Thus, the male-type butterfly piece 31 of the hinge 3 in this embodiment is an arc-shaped turn plate having an axial hole penetrating its center.
There is no difference from that of a conventionally known temple hinge except that the claw 31 is formed on the movable edge of the peripheral edge of 31a.

The other female butterfly 32 is also provided with receiving plates 32a and 32a that are vertically opposed to each other with a certain space therebetween, and this receiving plate also has a shaft hole of the turn plate 31a as in the conventional product. Axis insertion holes are drilled to make the axes the same.
By screwing 33, the male and female butterfly pieces 31, 32 can be relatively rotated.

The female butterfly piece 32 in this embodiment is different from the conventional one in that a plate-shaped spring 32b extending toward the moving path of the hitting claw 31b of the male butterfly piece 31 connected by the pivot 33 is the female butterfly piece. It is only that it is integrally formed by cutting the middle part of 32 into two pieces in the longitudinal direction.

The hinge 3 of this embodiment is constructed as described above. To connect the ear hook temples 2 to the left and right ends of the front frame 1 by using the hinge 3, the above bracket is used. While the fixed part of the male butterfly piece 32 is brazed to the inside of 11, the male butterfly piece 31 is also brazed to the inner proximal end of the ear hook temple 2, and these male and female butterfly pieces 31 and 32 are pivoted 33 It is possible to perform a simple task of pivoting by. In this case, what is necessary is to form an interval I between the end surface of the hinge bracket 11 and the base end abutment portion 21 of the ear hook temple 2 as a clearance space that allows the temple 2 to expand. Yes (see FIGS. 3 and 5). When the interval I is left in this way, an outward force acts on the ear hook temple 2 in a direction to reduce the interval I to rotate the turn plate 31a, so that the contact pawl 31b at the movable edge of the peripheral edge causes the spring 32b to move. When it hits (FIGS. 4 and 6), it is bent inward.

When the outward expansion force is removed in this state, the repulsive force of the spring 32b causes the male butterfly piece 31 and the ear hook temple 2 fixed to the male butterfly piece 31 to move to the original position, That is, in FIG. 1, the ear rest temple 2 is elastically restored to the solid line position.

Although the embodiments of the present invention are generally as described above, the present invention is by no means limited to the above-mentioned embodiments, and various modifications are made according to specific design requirements within the scope of the claims. Needless to say, the ear temples 2 and the male butterfly piece 31 may be integrally formed, or the hinge bracket 11 and the female butterfly piece 32 may be integrally formed, or the male butterfly may be changed. The piece 31 is brazed to the hinge bracket 11, the female butterfly piece 32 is brazed to the base end portion of the ear hook temple 2, and as a material for the male and female butterfly pieces 31 and 32, a Ni-Ti super elastic alloy material or phosphorus is used. It goes without saying that a design change action such as adopting or using a metal material having high elasticity such as a bronze material belongs to the technical scope of the present invention.

[Effect of the present invention]

As described above with reference to the embodiments, the spring hinge of the spectacle temple configured by applying the present invention has a coil spring or a small iron ball hinge mechanism like the spring hinge disclosed in Japanese Patent Publication No. 58-13892. It does not have a complicated structure such as incorporating it in a part, and the elasticity of the ear hook temple is a very simple structure that only links the hitch provided on the periphery of the turn plate of the male butterfly and the spring integrally provided on the female butterfly Since it can be expanded dynamically, the functionality and durability are significantly improved compared to the conventional spring hinges, the frequency of functional failures and damages is reduced, and the simple structure enables industrial mass production. Also improves the parts cost as a hinge,
By using this, it is possible to reduce the manufacturing cost of the spectacles used as the final product.

As described above, according to the present invention, it is possible to obtain a merit in function / performance and a economical merit in cost that cannot be expected in the spring hinge and the spring hinge glasses of this kind in the related art. It can be said that it is very large.

[Brief description of drawings]

FIG. 1 is a plan view of eyeglasses of an embodiment manufactured by applying the present invention, FIG. 2 is an exploded perspective view of male and female hinge pieces constituting an embodiment spring hinge of the present invention, and FIG. 3 is a spring hinge of the present embodiment. FIG. 4 is a partially enlarged perspective explanatory view showing a straight extension state of FIG. 4, FIG. 4 is a partially enlarged perspective explanatory view showing an expanded state of the spring hinge of this embodiment, and FIG. 5 is a horizontal breakage of the male and female butterfly piece portion of FIG. FIG. 6 is a partially broken perspective view showing the engagement state of the hitting claw of the turn plate and the spring of the female butterfly piece. FIG. 6 is a horizontal breaking view of the male and female butterfly piece part in FIG. It is a partially broken perspective view showing a state in which the spring of the die butterfly is bent. 1 …… Front frame, 11 …… Hinge bracket, 2 …… Ear hanging temple, 21 …… (Temple) base end abutment, 3 …… Hinge, 31 …… Male butterfly, 31a …… Turn plate, 31b: hitting claw, 32: female butterfly, 32a: receiving plate, 32b: spring, 33: pivot, I: interval.

Claims (3)

[Claims] 1. A pair of male and female butterfly pieces (31) for connecting folding ear hooks (2) to the left and right ends of a front frame (1) of eyeglasses.
A hinge means consisting of 32, and a female butterfly piece 32 for receiving the turn plate 31a by integrally projecting a claw 31b on the movable end of the periphery of the turn plate 31a of the male butterfly piece 31.
At the rear end of the receiving plates 32a, 32a of the female butterfly piece 32
A spring 32b is integrally formed by cutting the middle abdominal part in the longitudinal direction, and the projecting end of the spring 32b is made to face the movement trajectory of the hitting claw 31b of the turn plate 31a, so that the male part combined in a palm-joint state When the turn plate 31a of the model butterfly piece 31 and the receiving plate 32a of the female butterfly piece 32 relatively rotate about the pivot 33, the hitting claw 31b of the male butterfly piece 31 causes the female butterfly piece 32 to move.
A spring hinge for a spectacle temple, which is configured to come into contact with a tip end of a spring 32b of the eyeglass and receive an elastic repulsive force. 2. A spring hinge for an eyeglass temple according to claim 1, wherein the male butterfly piece 31 is formed integrally with the base end portion of the temple 2. 3. Hinges 3 are provided on the left and right ends of the front frame 1 of the spectacles.
In a pair of spectacles formed by connecting the ear hook temples 2 and 2 via a hook so that the temples can be folded and operated, the base end abutment portion 21 of the ear hook temple 2 is slightly spaced from the protruding end surface of the hinge bracket 11 connected to the front frame 1. The ear hook temple 2 is fixed to the male butterfly piece 31 or the female butterfly piece 32 of the hinge 3 located at the free end side so that I becomes empty, and the periphery of the turn plate 31a of the male butterfly piece 31 is movable. A catch 31b is integrally formed at the end and a receiving plate 32a of a female butterfly 32 for receiving the turn plate 31a.
The spring 32b is integrally formed at the rear end of 32a by cutting the middle part of the female butterfly piece 32 in the longitudinal direction.
When the projecting end of the spring 32b faces the moving path of the hitting claw 31b of the turn plate 31a and the ear hook temple 2 is attempted to expand outward with respect to the front frame 1 by a predetermined angle or more, When the turn plate 31a of the male butterfly piece 31 and the receiving plate 32a of the female butterfly piece 32 combined with each other relatively rotate about the pivot 33, the contact claw 31b of the male butterfly piece 31 is female. The spring 32b comes into contact with the spring 32b of the butterfly piece 32.
The spring hinged glasses are characterized in that the temples 2 are bent so that the temples 2 for ear hooks can be outwardly and forcefully expanded.