JPS5825614A - Ball bearing device for ear temple of frame of spectacles - Google Patents

Abstract

PURPOSE:To permit both ear temples of the frame of a pair of spectacles to be spread and folded freely through ball bearings. CONSTITUTION:Each sperical body 3 is projected through a supporting beam T from the internal surface of each arm frame 2 stuck on either side of a lens frame 1 made of metal or synthetic resin, and a bearing half body 5 having a guide groove H for said beam T along the center part of the back while projecting in a bowl shape slantingly and inwardly from the base end of a temple 4 made of metal or synthetic resin is engaged with one externally slanting half body of said sperical body. Further, a bowl-shaped bearing half body 7 projecting slantingly and inwardly from the end part of each retaining frame 6 made of metal or synthetic resin stuck to the base part internal surface of the temple 4 at the base part with a screw P and a nut N is engaged with the other slanting half part of each spherical body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, each ear hook has a handle that can be freely unfolded and folded through a ball bearing with respect to a lens frame of eyeglasses.

As is well known, most of the ear hooks in conventional eyeglass frames consist of a lens frame for the handle, and male and female bearings protruding from the handle for the ear hooks. It is.

However, with this kind of ear hook, as the handle is repeatedly opened and closed, the bearing part is simply a narrow surface contact, so this part wears out quickly, and as a result, the bearing part becomes loose, and the screws and pins also wear out. Finally, there are disadvantages such as the tendency to break and detach, and therefore the durability of the eyeglass frame is poor.

The present invention provides a Pj1 mirror frame that eliminates the disadvantage of slanted ID and can be worn for a long time (accurately).

Now, the embodiment will be described in detail below with reference to the drawings. Each arm frame 2 is fixed to both ends of a metal or synthetic resin lens frame 1, and each sphere 3 is protruded from the inner surface of the arm frame 2 through a support rod T. The ear hook made of metal or synthetic resin is attached to the outer diagonal half of the handle 40.
The bearing is shaped like a bowl and protrudes diagonally inward from the base end, and has a guide groove I (I) of the support rod T drilled along the center of the back surface. Each half has a base part, and the ear hooks overlap directly inside the base of the handle 4 and protrude diagonally inward from the ends of the 6-presser frame 6 made of metal or synthetic resin, which is fixed with screws P and nuts L-N, respectively. Each of the bowl-shaped bearings is formed by fitting the halves 7 together.

As described above, the present invention consists of two spheres protruding from the inner surface of each arm frame at both ends of the lens frame, each ear hook having a bowl-shaped bearing straddled at the end of the handle, and these ear hooks being attached to the inner side of the base of the handle. The bowl-shaped bearings at the ends of the 6 presser frames are fitted in a half-locked manner, so the opening and closing of the handle of the ear hook is always done smoothly and reliably by the contact of the wide surface of the bearing. The bearing has the advantage that it can be worn accurately at all times because it does not cause backlash, and since the bearing has less wear on the parts, there is no need to worry about it breaking or coming off like the conventional pins and screws, and therefore it can be used for a long time. It also has the practical advantages of being easy to manufacture and assemble, and the ball bearing of the ear hook and handle of the eyeglass frame is a new and useful invention as a device.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention. The top view with the handle folded, Figure 3 is the arm frame. The ear hook is an exploded plan view of the handle and presser frame, and FIG. 4 is an end view of the base of the handle. 1 is the lens frame, 2 is the arm frame, 3 is the sphere, 4 is the ear hook handle, 5
, 7 is a bowl-shaped half body, 6 is a presser frame, T is a support rod, and H is a guide groove.

Claims (1)

[Claims] Each sphere is protruded from the inner surface of each arm frame at both ends of the lens frame via a support rod, and each ear hook is formed into a bowl shape and protrudes inward from the base end of the handle on each half of these spheres. In addition, each bearing, which has guide grooves for each of the above-mentioned support rods on the back side, is fitted into the other half of each sphere, and the ear hook is attached to the end of each leg, which is superimposed on the inner surface of the base of the handle. The bowl-shaped bearings protruding toward the lens frame are fitted with half-shaped bearings, and the handles of each earhook can be unfolded and folded with respect to the lens frame. [
.