JPH03122611A - Spring hinge of spectacles temple and spectacles using spring hinge - Google Patents

Abstract

PURPOSE:To attain pansion an ear temple elastic with simple structure, and to improve the functional performance and durability and to reduce the frequencies of functional trouble and breakage by relating an abutting claw provided to the peripheral edge of the turn plate of a male type hinge piece with a leaf spring united with a female type hinge piece. CONSTITUTION:The abutting claw 31b is projected on the peripheral edge of the turn plate 31a of the male type hinge piece 31 and the leaf spring 32b is provided integrally at the inner end part of the receiving plate 32a of the female type hinge piece 32 which receives the turn plate 31a. Then the tip end of the leaf spring 32b is made to face the movement track of the abutting claw 31b and when the receiving plate 31a of the male type hinge piece 31 and the receiving plate 32a of the female type hinge piece 32 which are combined in an alternate engagement state rotate relatively around a pivot 33, a abutting claw 31b of the male type hinge piece 31 abuts on the leaf spring 32b of the female type hinge piece 32. consequently, the ear temple can be expanded elastically and the structure is mode simple; and functional trouble and breakage are nearly eliminated and the functional performance and durability are improved.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a spring hinge of an eyeglass temple, and eyeglasses using the spring hinge, and more specifically, to a spring hinge of an eyeglass temple, and more specifically, to a spring hinge of an eyeglass temple, and more specifically, to a spring hinge of an eyeglass temple. This invention relates to a spring hinge for an eyeglass temple, which allows the ear-hook temple to expand elastically without the need for any additional parts by skillfully linking the modified shapes of the male and female butterflies.

[Prior art and technical problems to be solved] As is well known, when trying to put on and take off glasses from the eye area, the free end side (temple end) of the ear-hook temple inevitably expands outward. As a result, large stress is applied to the base of the temple, which tends to cause failure or deformation of the frame of the eyeglass. Conventionally, proposals to eliminate such problems include installing a coil spring and a small iron ball in one of the hinges that connect the front frame and the ear temple, and installing a coil spring and a small iron ball in the other butterfly. The outer peripheral edge of the turn plate is formed into a cam shape, and when an expansion force is applied to the hinge, the turn plate presses the small iron ball and compresses the coil spring, allowing the ear hook temple to elastically expand by a predetermined angle. There is a spring hinge for an eyeglass temple that allows this, and its specific details are disclosed in Japanese Patent Publication No. 13892/1983.

However, manufacturing a spring hinge by combining a coil spring, a small iron ball, and a cam plate as disclosed in the above-mentioned Japanese Patent Publication No. 58-13892 significantly complicates the structure and reduces the efficiency of the assembly work. This will inevitably become a major factor in increasing costs.

The present invention has been made in view of the fact that the above-mentioned conventional spring hinge is effective as a measure to prevent deformation and failure of eyeglass frames, and although it has the same or higher functionality than the conventional spring hinge, It is a technical object of the present invention to provide a spring hinge for an eyeglass temple that has a simple structure, is highly functional and durable, and has almost no functional impairment or damage.

Further, a technical object of the present invention is to provide a spring hinge that can be easily mass-produced on an industrial scale and manufactured at low cost.

Furthermore, another technical object of the present invention is to provide spring-hinged eyeglasses that are significantly superior to conventional products in terms of functionality, durability, and price.

[Means adopted to solve the problem]

The means adopted by the present inventor to solve the above technical problem will be described below with reference to the accompanying drawings. .

That is, the present invention consists of a pair of male and female butterfly pieces 31 and 32 that connect the ear hook temple 2 in a foldable and operable manner to both left and right ends of the front frame l of the glasses, and the peripheral edge of the turn plate 31a of the male butterfly piece 31 A leaf spring 32b is provided integrally with the female butterfly piece 32 at the far end of the receiving plate H2a/32a of the female butterfly piece 32 which receives the turn plate 31a. The tip faces the movement trajectory of the hit claw 31b in the tercib 1 note 31a,
When the receiving plate 31a of the male butterfly piece 31 and the receiving plate 32a of the female butterfly piece 32, which are combined in a state of palms together, rotate relative to each other around the pivot 33, the contact claw 31b of the male butterfly piece 31 By employing a hinge connection means configured to be able to come into contact with the leaf spring 32b of the female butterfly piece 32, it was possible to realize a spring hinge and eyeglasses that can satisfy the above-mentioned technical problems.

〔Example〕

Hereinafter, the present invention will be explained in more detail based on embodiments shown in the accompanying drawings. In addition, FIG. 1 is a plan view of example eyeglasses manufactured by applying the present invention, FIG. 2 is an exploded perspective view of male and female butterfly pieces constituting an example spring hinge according to the present invention, and FIG. Fig. 4 is a partially enlarged perspective explanatory view showing the example spring hinge in a straight-extended state; Fig. 4 is a partially enlarged perspective explanatory view showing the expanded state of the spring hinge of this example; Fig. 5 is a horizontal view of the male and female butterflies in Fig. 3; A partially broken perspective explanatory diagram showing the engagement state between the contact claw of the turn plate and the leaf spring of the female butterfly piece by breaking it, and FIG. It is a partially broken perspective explanatory view showing a state in which the leaf spring of the female butterfly piece is bent by the contact claw.

In the drawings, what is indicated by reference numeral 1 is a front frame having rims on the left and right into which lenses (not shown) are fitted. A hinge bracket 11 is provided at both left and right ends of the front frame 1 to protrude toward the eyepiece side, and an ear hook temple 2 is hingedly connected to the bracket 11 via a hinge 3 so as to be foldable and operable.

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

That is, in the present invention, at least the female butterfly piece 3 of the hinge 3
2 needs to be made using a metal material with high spring properties, and in this example, both the male and female butterfly pieces 31 and 32 are
Beryllium copper alloy material (chemical composition: Be 1.8-2.0
5X, Ni+Co<0.2X, remainder Cu).

Therefore, the male butterfly piece 31 of the hinge 3 in this embodiment is
This is no different from a conventionally known temple hinge except that claws 31 are formed on the periphery of an arcuate turn plate 31a having an axial hole penetrating through the center. The other female butterfly piece 32 also has receiving plates 32a, 32a protruding from the top and bottom facing each other at a certain interval.
A pivot insertion hole whose axis is the same as the shaft hole of 1a is drilled, and by screwing the pivot 33, the male and female butterfly pieces 31 and 32 are inserted.
can be rotated relative to each other. The female butterfly piece 32 of this embodiment is different from the conventional product because a leaf spring 32b extending facing the movement trajectory of the contact claw 31b of the male butterfly piece 31 connected by a pivot 33 is connected to the female butterfly piece 32. The only difference is that it is molded in one piece.

The hinge 3 of this embodiment is constructed as described above, but in order to manufacture glasses by connecting the ear hook temple 2 to both left and right ends of the front frame l using this hinge 3, the inside of the bracket 11 must be While the fixing part of the female butterfly piece 32 is brazed, the male butterfly piece 31 is also brazed to the inner proximal end of the ear hook temple 2, and both male and female butterfly pieces 31 and 32 are pivotally connected by a pivot 33. This can be done with a very simple task. Ta vl
In this case, what is required is to form an interval r between the end surface of the hinge bracket 11 and the proximal abutment part 21 of the ear hook temple 2 as a clearance space that allows the temple 2 to expand. (See Figures 3 and 5)
. When the interval I is left open in this way, an outward force moves on the ear hook temple 2 in a direction that shortens the interval I, rotates the turn plate 31a, and the contact claw 31b on the periphery engages the leaf spring 32b. Hit (Figures 4 and 6)
When the male butterfly piece 31. is bent inward and the outward expansion force is removed in that state, the male butterfly piece 31. The ear-hook temple 2 fixed to the male butterfly piece 31 is elastically restored to its original position, that is, the position shown by the solid line of the ear-hook temple 2 in FIG.

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 may be modified according to specific design requirements within the scope of the claims. It goes without saying that changes are possible, such as ■ molding the ear-hook temple 2 and the male butterfly piece 31 integrally, molding the hinge bracket 11 and the female butterfly piece 32 as one body, Braze the mold butterfly piece 31 to the hinge bracket 11,
The female butterfly piece 32 is brazed to the base end of the ear-hook temple 2, and the male and female butterfly pieces 31 and 32 are made of a highly elastic metal material such as Ni-Ti superelastic alloy material or phosphor bronze material. It goes without saying that design changes such as adopting or changing the design belong to the technical scope of the present invention.

[Effects of the present invention]

As explained above with reference to the embodiments, the spring hinge of the eyeglass temple constructed by applying the present invention is similar to the conventional spring hinge disclosed in Japanese Patent Publication No. 58-13892, in which a coil spring or a small iron ball is used as a hinge. The ear-hook temple has a very simple structure that does not require a complicated structure such as incorporating it into the mechanical part, but only connects the contact claw provided on the periphery of the turn plate of the male butterfly and the leaf spring integrally provided on the female butterfly. Because it allows elastic expansion of the hinge, its functionality and durability are greatly improved compared to the conventional spring hinges, reducing the frequency of functional failure and breakage. It also improves mass productivity and reduces the cost of parts for the hinge as well as the manufacturing cost of the final product using the hinge.

As described above, according to the present invention, it is possible to obtain advantages in terms of function and performance as well as economic advantages in terms of cost, which cannot be expected from conventional spring hinges and spring hinge glasses of this type. It can be said that this is a very big deal.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a plan view of example eyeglasses manufactured by applying the present invention, Fig. 2 is an exploded perspective view of male and female butterfly pieces constituting an example spring hinge of the present invention, and Fig. 3 The figure is a partially enlarged perspective explanatory view showing the spring hinge of this embodiment in a straight extended state, FIG. 4 is a partially enlarged perspective explanatory view showing the expanded state of the spring hinge of this embodiment, and FIG. A partially cutaway perspective explanatory view showing the engagement state between the contact claw of the turn plate and the leaf spring of the female butterfly piece by horizontally breaking the part, Figure 6 shows the male and female butterfly pieces in Figure 4 horizontally. It is a partially broken perspective explanatory view showing a state in which the leaf spring of the female butterfly piece is bent by the contact claw when broken. l...Front frame, 11...Hinge bracket, 2...Ear hook temple, 21...(Temple)
Base end abutment part, 3...Hinge, 31...Male butterfly piece, 31a...Turn plate, 31b... Hit claw, 32...Female butterfly piece, 32a... ...Acceptance plate,
32b...Plate spring, 33...Axis, ■-Salary...Interval.

Claims (3)

[Claims] (1) A pair of male and female butterfly pieces 31 and 3 that connect the ear hook temple 2 to both left and right ends of the front frame 1 of the glasses in a foldable and operable manner.
2, the hinge means has claws 31b protruding from the periphery of the turn plate 31a of the male butterfly piece 31, and the inner ends of the receiving plates 32a of the female butterfly piece 32 that receive the turn plate 31a. A plate spring 32b is provided integrally with the female butterfly piece 32, and its tip faces the movement trajectory of the contact pawl 31b on the turn plate 31a, so that the male butterfly piece 31 is assembled in a state of joining hands. The receiving plate 31a of the female butterfly piece 32 and the receiving plate 32a of the female butterfly piece 32
When the two rotate relative to each other around the pivot 33, the contact claw 31b of the male butterfly piece 31 engages the leaf spring 32 of the female butterfly piece 32.
A spring hinge for an eyeglass temple, characterized in that it is configured to be able to come into contact with b. (2) The spring hinge for an eyeglass temple according to claim 1, wherein the male butterfly piece 31 is integrally formed with the proximal end of the temple 2. (3) In eyeglasses in which the ear hook temples 2, 2 are foldably connected to both left and right ends of the front frame 1 of the eyeglasses via hinges 3, between the protruding end surface of the hinge bracket 11 connected to the front frame 1; At the same time, fix the ear-hook temple 2 to the male butterfly piece 31 or the female butterfly piece 32 of the hinge 3 located on the free end side so that the proximal abutment part 21 of the ear-hook temple 2 has a slight interval I. , the turn plate 31 of the male butterfly piece 31
A contact claw 31b is provided protruding from the periphery of the turn plate 31a, and a plate spring 32b is provided integrally with the female butterfly piece 32 at the inner end of the receiving plate 32a of the female butterfly piece 32 that receives the turn plate 31a. is provided, and its tip faces the movement trajectory of the abutting claw 31b on the turn plate 31a, and when the ear hook temple 2 is to be expanded outward at a predetermined angle or more with respect to the front frame 1, the palms of the hands come together. When the receiving plate 31a of the male butterfly piece 31 and the receiving plate 32a of the female butterfly piece 32, which are combined in the state, rotate relative to each other around the pivot 33, the abutting claw 31b of the male butterfly piece 31 is The leaf spring 32b comes into contact with the leaf spring 32b of the female butterfly piece 32.
The spring-hinged glasses are characterized in that the ear-hook temples 2 can be expanded outwardly by bending b.