JPH05313101A - Joint for attaching of bridge and pad arm - Google Patents

Abstract

PURPOSE:To mechanically connect a rim, bridge and pad arm consisting of different metals and to obtain spectacles having excellent strength by providing the joint with a cavity to be inserted and fixed by welding with the ends of the bridge and pad arm and a brazing surface for the rim. CONSTITUTION:The metallic rim 4 as well as the pad arm 3 and the bridge 1 are fixed by means of the joint 2 having the cavity capable of housing the fixing ends of the pad arm and the bridge 1 therebetween. Namely, the fixing ends of the pad arm and the bridge 1 are housed into the cavity of the joint 2 and are brazed. The joint 2 is brazed to the rim 4 and the pad arm and the bridge 1 are mounted thereto. The surface of the joint 2 in contact with the rim 4 is matched with the shape of the rim 4, by which the brazing area is increased. The sepn. of the brazing between the different metals and even of the bridge 1 made of a superelastic alloy is obviated by such joint.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a part for assisting fixation of dissimilar metal bridges and clings foot of a metal spectacle frame.

[0002]

2. Description of the Related Art Eyeglass frames are divided into those made of plastic and those made of metal, depending on the material used for the front surface.
There are combination frames of plastic and metal, borderless frames, and grooved frames. In order to stably support the lens on the eye of the user, the spectacle frame is made of a material that has a strength not to be deformed by some stress and is easily machined.

A metal frame is usually composed of several parts such as a rim, a bridge, a Krings foot, and a broach, which are made of the same material. The clings foot and bridge are brazed and fixed directly to the left and right rims of the glasses.

Conventionally, most of the materials used for eyeglass frames have a small elastic deformation amount such that they are deformed and damaged when they are subjected to excessive stress, but recently, they are elastic, even though they are metals. Some use superelastic alloys for bridges.

[0005]

As described above, each component forming the eyeglasses is mainly fixed by brazing. Among them, the brazing part of the rim and the clings foot, and the brazing part of the rim and the bridge have a small bonding area, and moreover, a force is applied during use, so that the brazing may occur.

When a superelastic alloy is used for the bridge,
Especially, it is easy to get out of the row. Superelastic alloys are difficult to adhere due to their interfacial characteristics, and even if they are brazed to other metals, they easily break at the interface.

Not only superelastic alloys, but also rims, bridges, and Krings feet, when dissimilar metals are used, sometimes sufficient strength cannot be obtained by simply brazing.
When the metal materials of the rim, the bridge, and the Clings foot are different, such as superelastic alloy, it is necessary to secure sufficient fixing strength by a mechanical joining method.

An object of the present invention is to provide a spectacle having excellent strength by obtaining a means for mechanically connecting a rim made of different kinds of metals, a bridge and a Krings foot.

[0009]

In order to solve the above-mentioned problems, according to the present invention, a joint having a cavity for accommodating the fixed end of the Krings foot and the bridge is provided between the metal rim and the Krings foot and the bridge. To fix it.

As the material of the joint, it is desirable to use the same metal material as the rim, but different metals may be used as long as the brazing property is good.

The fixed ends of the Krings foot and the bridge are housed in the joint cavity and brazed. Braze joints to the rims and attach the clings foot and bridge. The brazing area can be increased by matching the surface of the joint that contacts the rim with the shape of the rim.

With the joint of the present invention, between dissimilar metals,
The bridge made of super-elastic alloy also eliminates the risk of loosening.

The joint of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of a metallic spectacle frame using the bridge mounting joint of the present invention. The ends of the bridge 1 and the Krings foot 3 are inserted and brazed into the cavity of the joint 2.

FIG. 2 is a view showing an example in which the joint of the present invention is used for rimless glasses. In this case, the joint 2 is brazed to the lens pad 5.

3, 4, and 5 are a top view, a bottom view, and a front view of an example of the joint of the present invention.

In the joint for mounting the clings foot and the bridge of the present invention, the fixed ends of the clings foot 5 and the bridge 4 are housed from both sides of the hollow portion and brazed internally. Conventionally, the clings foot and the bridge have been brazed separately, but by storing them in a joint, they become a beautiful fixing means.

[0017]

When the bridge and the Krings foot are fixed by using the joint of the present invention, the brazing is carried out in the pipe, so that the strength is large. In addition, since the joint material and shape are suitable for brazing with the rim, there is no need to worry about loosening the braces, and the joint can be fixed to a rim made of a different metal with sufficient strength.

The effect is particularly remarkable when the bridge and the Krings foot made of a superelastic alloy, which is apt to cause the loosening, is used.

The design of the bridge mounting joint also has the effect of enhancing the decorative effect of the spectacle frame. With the joint, the brazed parts can be fixed and the bridge and clings foot can be fixed without spoiling the appearance.

[0020]

[Brief description of drawings]

FIG. 1 is an explanatory view of a metal spectacle frame using a joint of the present invention.

FIG. 2 is an explanatory view of a rimless spectacle frame using the joint of the present invention.

FIG. 3 is a top view of the joint of the present invention.

FIG. 4 is a bottom view of the joint of the present invention.

FIG. 5 is a front view of the joint of the present invention.

[Explanation of symbols]

 1 BRIGISH 2 Joint 3 Clings leg 4 Rim 5 Lens pad 11 Bridge 12 Pipe 13 Clings leg 21 Rim 22 Clings leg 23 Bridge

Claims (1)

[Claims] 1. A bridge and clings for a spectacle frame, which has a cavity for inserting and brazing the ends of the bridge and the clings constituting the spectacle frame and having a brazing surface for the rim. Foot mounting joint.