JPH0590434U - Bridge joint for glasses - Google Patents

Abstract

(57) [Summary] [Purpose] Assemble eyeglasses by using a material that is difficult to braze, such as nickel titanium alloy, for the bridge. [Structure] A joint that integrally includes a pipe portion and a pad arm portion is manufactured using a material that is easily brazed or welded. [Effect] By connecting the ends of the bridge to the pipe portion and brazing or welding the entire joint to the glasses, the glasses can be easily assembled.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in eyeglass parts, and more particularly to an improvement in parts for connecting bridges made of a material that is difficult to braze, such as nickel titanium alloy.

[0002]

[Prior Art]

 Some nickel-titanium-based alloys exhibit extremely large elasticity, and because they have a high elastic limit and are difficult to break even if they are deformed under a force, they are attracting attention as new eyeglass materials. However, the spectacle parts using such alloys have the drawback that when brazing or welding, a brittle layer is formed at the joint site and the joint strength becomes extremely insufficient. .

For this reason, conventionally, when joining eyeglass parts made of a nickel-titanium alloy, for example, a method has been adopted in which a brazable metal pipe is capped on the eyeglass parts and then joined. However, the adoption of this method inevitably increases the total number of eyeglass parts, complicates the assembly process, and requires additional labor.

[0004]

[Problems to be solved by the device]

 Therefore, in the present invention, it is a technical subject to enable the joining of eyeglass parts made of nickel-titanium alloy to other eyeglass parts without increasing the total number of parts.

[0005]

[Means for Solving the Problems]

 The means adopted in the present invention for solving the above problems will be described below. A pipe portion capable of fitting a bridge end portion and a pad arm portion having a diameter smaller than the pipe portion are welded or brazed. It is a means of manufacturing by integrally connecting them with an easy metal material.

[0006]

【Example】

 Hereinafter, the present invention will be described based on the first embodiment.

A wire made of a brazable metal material (nickel-chromium alloy) is cut into a predetermined length. After that, a fitting hole having a predetermined depth is bored from one end face of the cut wire along the longitudinal direction of the wire. Then, a region having a predetermined length from the end portion on the opposite side of the wire rod is swaged to be thinly stretched.

The metal processed body thus obtained becomes the bridge joint 1. At this time, the portion where the fitting hole is formed is the pipe portion 11, and the swaged portion is the pad arm portion 12.

The pad box 3 is brazed to the tip of the pad arm portion 12 of the joint 1 thus obtained. After that, the pad arm portion 12 is subjected to primary bending processing, the end portion of the bridge 2 is inserted into the fitting hole, and then the pipe portion 12 is caulked to connect the joint 1 and the bridge 2. Next, after the above-mentioned primary bending pad arm portion 12 is subjected to secondary bending processing to form an S-shaped pad arm shape, the joint 1 is brazed to another spectacle component 4 (lens stopper for rimless spectacles). To do. Then, the bridge 2 could be joined to the spectacle component 4 via the joint 1. However, since the bridge has two ends, it is necessary to perform the above-mentioned joining process through the joints on both ends of the bridge. After this, you can assemble your glasses normally.

The joint of the first embodiment is not necessarily brazed only to the lens stopper, but can be brazed to, for example, an ordinary rim. Further, in the first embodiment, the diameter of the pad arm portion is reduced by swaging, but it may be reduced by cutting.

Next, a second embodiment will be described.

The pad box 3 is welded to the tip of the pad arm portion 12 of the bridge joint 1 manufactured similarly to the first embodiment. Further, the same primary bending, insertion of the bridge 2, caulking and secondary bending as in the first embodiment are performed, and then the joint 1 is welded to the eyeglass component 4. After this, you can assemble your glasses normally. The nickel-chromium alloy is a metal that is easily welded.

The first and second embodiments are configured as described above, but the joint of the present invention is not limited to the above embodiment. For example, it is naturally possible to apply the joint of the present invention to eyeglasses having a rim.

[0014]

[Effect of the device]

 As described above, since the joint of the present invention is manufactured integrally with the pipe part and the pad arm part, it is easy to assemble. Also, if the pad arm part has a reduced diameter, it is easy to perform the subsequent bending process. Thus, the bridge joint of the present invention has high industrial utility value.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment.

FIG. 2 is a diagram illustrating a process of brazing a pad box to the first embodiment product.

FIG. 3 is a diagram showing a product of the first embodiment subjected to a primary bending process.

FIG. 4 is an explanatory diagram of a process of connecting the bridge to the first embodiment product.

FIG. 5 is a diagram showing a product of the first embodiment subjected to a secondary bending process.

FIG. 6 is a partially enlarged view of eyeglasses assembled by adopting the first embodiment.

FIG. 7 is a side view of the second embodiment.

FIG. 8 is a diagram illustrating a process of welding a pad box to the second embodiment product.

FIG. 9 is a diagram showing a product of the second embodiment subjected to a primary bending process.

FIG. 10 is an explanatory view of a process of connecting the bridge to the second embodiment product.

FIG. 11 is a view showing a product of the second embodiment subjected to a secondary bending process.

FIG. 12 is a partially enlarged view of eyeglasses assembled by adopting the second embodiment.

[Explanation of symbols]

 1 Joint 11 Pipe part 12 Pad arm part

Claims (1)

[Scope of utility model registration request] 1. A pipe portion capable of fitting a bridge end portion,
A bridge joint for spectacles, characterized in that a pad arm portion that is connected to the pipe portion and has a diameter smaller than that of the pipe portion is integrally made of a metal material that is easily welded or brazed.