JPS60169823A - Hinge of spectacle frame - Google Patents

Abstract

PURPOSE:To obtain a hinge which is superior in operability, productivity, economy, heat resistance, wear resistance, etc., by providing a bearing in the hinge and using ceramics, sintered alloy, crystal alloy, crystallized glass, etc., as the material of the bearing. CONSTITUTION:The hinge part consists of a male dowel 1 and a female dowel 3 made of alloy of titanium, etc., a screw 2, and the bearing 6a made of ceramics, sintered alloy, crystallized glass, etc. A cleaning part is formed at one end surface of the hole of the male dowel 1 of the hinge, the bearing 6a having the same internal diameter with the female dowel 3 is fitted in the cleaning part so that its thickness projects from the surface of the male dowel 1 by about 1/100mm., and the femal dowel 1 is fitted in the female dowel 3 and clamped with a screw 2. When this is made, the bearing 6a is inserted into the hinge previously to complete a hinge unit component.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hinge for an eyeglass component that connects a lens frame and a temple of an eyeglass frame.

[Prior art and problems]

FIG. 1 is a sectional view of a hinge portion of a conventional eyeglass frame. In the figure, 1 is a male piece, 2 is a screw, 6 is a female piece, 4 is a thin plate ring, and 5 is a thin-walled pipe. In the conventional 414 frame eyeglass frame, a thin plate ring 4 and a thin flange pipe 5 are inserted into a male piece 1, a female piece 6 is assembled, and these are tightened with screws 2. In such a structure, since the thin ring 4 and the thin buckled pipe 5 are made of materials such as rubber, resin, polymer material, brass, and stainless steel, they are placed inside the hinge in advance and then attached to the hinge. When brazing with vines, the thin plate ring 4 and thin buckled pipe 5 may melt due to the heat effect during brazing.
Because of the disadvantage of welding, a method is used in which the hinge is constructed as a single component separate from the hinge, and is placed inside the hinge using tools such as tweezers during the final assembly process of the eyeglass frame.

However, this method has extremely poor workability and mass production, and the thin plate ring 4 and thin-walled pipe 5 may get lost when retightening the hinge screw 2 during the sales and distribution process. There are some undesirable drawbacks.

[Purpose of the invention]

The object of the present invention is to eliminate the above-mentioned drawbacks, and to provide a hinge that is excellent in workability, productivity, economy, heat resistance, abrasion resistance, etc.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 shows a first embodiment of the present invention, and is an enlarged sectional view of the hinge portion. In the figure, 1 is a male piece made of titanium or titanium alloy, LO is a female piece made of titanium or titanium alloy, and 6
Reference numeral a designates a bearing made of a material such as a ceramic sintered alloy or crystallized glass, and the other members are designated by the same numbers as in FIG. 1 and their explanations will be omitted. A feature of the present invention is that a dredged portion is formed on one end surface of the hole in the male hinge piece 1, and this dredged portion is made of a material such as ceramic-sintered alloy, crystallized glass, etc., which has the same inner diameter as the hole in the female piece 6. The bearing 6a consisting of the above is fitted so that its thickness protrudes from the surface of the male piece 1 by about 1.7100 am, the male piece 1 is fitted into the female piece 1, and the screw 2 is tightened.

When manufacturing this, the bearing 6a is inserted into the hinge in advance, and the hinge is completed as a single component.

In addition, if the brazing temperature is 800℃ or higher, install a temporary screw in which the material of the screw 2 is titanium or titanium alloy.
It is better to replace them with regular screws during the assembly process of the finished product.

Next, Fig. 3 shows a second embodiment of the present invention, which is an enlarged sectional view of the hinge part, and in addition to the structure shown in Fig. 2, the lower part is also made of materials such as ceramics, sintered alloy, and crystallized glass. A bearing 6b is included. The other numbers are given the same numbers as in FIG. 1, and their explanation will be omitted.

FIG. 4 shows a third embodiment of the present invention, which is an enlarged sectional view of a hinge portion, in which the bearings 6a and 6b of the configuration shown in FIG. 3 are integrated into a pipe shape, and a bearing 6C is inserted therein. The other numbers are given the same numbers as in FIG. 1, and their explanation will be omitted.

FIG. 5 is an enlarged cross-sectional view of the hinge part of the fourth embodiment of the present invention. Only the bearing 6b is fitted. The other numbers are given the same numbers as in FIG. 1, and their explanation will be omitted.

Next, a 90° opening/closing test of the hinge was conducted to confirm the effectiveness of the present invention. As a result, it was found that even after 40,000 times or more, there was no sagging of the screw 2, and there was no seizure of the male piece 1 and the female piece 6, which maintained a stable stiffness, indicating that the hinge could withstand long-term use. In addition, in the above example, the temperature is - male piece 1,
The material of female piece 2 will be explained as titanium material or titanium alloy.If it is made of titanium material or titanium alloy, a very large effect will be obtained, but if it is made of normally used materials such as nickel silver or Ni alloy, it will not be used. The same effect can be obtained.

〔Effect of the invention〕

According to the present invention, since a bearing made of ceramics, sintered alloy, crystallized glass, etc. is used in one hinge part, it has excellent heat resistance. Therefore, in order to be able to easily process eyeglasses without being affected by heat, even when performing surface treatment operations such as brazing, plating, and vacuum evaporation, even at temperatures above 30°F, it is important for eyeglass manufacturers to provide hinges with excellent productivity. It also has industrial value because it allows us to provide consumers with extremely high-quality eyeglass frames that do not cause the hinges to seize or flap due to sagging even after long-term use due to the hinges having excellent wear resistance. It is a very large hinge.

[Brief explanation of drawings]

FIG. 1 is an enlarged sectional view showing a conventional hinge section. 2 to 5 are enlarged sectional views showing first to fourth embodiments of the hinge portion according to the present invention, respectively. 1...Male piece, 2...Screw, 6...Female piece, 4...Thin plate ring-5...Thin pipe with flange, 6a, 6b, 6C: Bearing made of ceramics, sintered alloy, crystallized glass, etc. No. 1 Entrance 5 Fig. 2 Fig. 4 C Fig. 5 Continuation of page 1 6] 0 Inventor Minoru Kobayashi Tanashi City Honmachi 6 Gozosho

Claims (1)

[Claims] A hinge for an eyeglass frame, characterized in that it has a bearing inside the hinge and uses ceramics, sintered alloy, crystallized glass, etc. as a material for the bearing.