JPS63273831A - Structure of temple joint structure of spectacle frame - Google Patents

Abstract

PURPOSE:To reduce a temple joint structure to smaller size so that the slip characteristic thereof is not hindered by adopting powerful magnets as recovering force of a temple to the home position (normal opening degree). CONSTITUTION:One hinge piece 8 of a hinge 6 is fixed by brazing to a wrap-a round endpiece 4 and the magnet 14 is fixed to an inside surface 13 of the other hinge piece 9. Another magnet 18 which makes attraction with the magnet 14 to each other is fixed to the temple 5 side to constitute the temple in such a manner that the temple slides in a distance range where the attraction forces of the two magnets 14, 18 act. However, the contact of the two magnets 14, 18 in the nearest state does not arise and there is a slight spacing between the same; in addition, guides 10, 10 for sliding of the hinge piece 9 and temple 5 with each other together with the magnetic 14, 18 are formed. Since the magnets are used as the recovering force to allow the opened temple to restore the normal opening degree, the smaller and lighter joint structure consisting of the smaller number of parts is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a temple joint structure in an eyeglass frame.

(Prior Art) The temple of the eyeglass frame is attached so that it can be opened and closed, and generally, the opening and closing is performed via a hinge as shown in FIG. The temple (a) is waxed onto the butterfly piece (mouth l) of the hinge (b), and the other butterfly piece is the rim (c) that fixes the lens.
The temple (A) moves only in the direction of the arrow shown in the figure, and is not allowed to open any further. Of course, this degree of opening of the temples is sufficient to simply hang the glasses on the face, and since the temples have some springiness, they can curve slightly to fit the face. However, the spring characteristics of the temples alone will ensure that they fit your face and the glasses you are wearing will not wobble for only a short period of time after purchase. , depending on the material it is made of, and can return to its original shape if the force is removed, but the screws on the hinges connecting the temples may loosen, causing play. In addition, with the conventional temple joint structure that uses only hinges, when an external impact force is applied to the front frame, there is no means to absorb the impact force, which may cause the glasses to fall off the face or damage the lenses. Sometimes the frame itself may be bent.

By the way, as a means of solving such problems with eyeglass frames, a joint structure that allows the temple to open slightly outward from the straight line with the endpiece is desired, and is used in some cases. FIG. 8 shows a conventional example of this joint structure. In other words, the basic concept of the joint structure is to fix the fixed butterfly piece (c) on the endpiece (a) with brazing, and use the sliding butterfly piece (d) on the other piece to allow sliding over a certain distance. By doing so, it is possible to give the vine (b) an outward opening as shown by the dotted line. A guide (e) is fixed to the inner surface of the temple (b), and the sliding butterfly piece (d) slides using the guide (e) as a guide. ) is housed inside the coil spring (not shown), and its length is adjusted so that it is compressed when the crane (b) is opened outward. The crane (b) is returned to its original position.

However, since such a conventional joint structure incorporates a coil spring inside, the thickness (H) becomes large, and the length (L) does not result in a long squirrel or rim glasses frame. In other words, in order to obtain a coil spring with a certain degree of restoring force, a coil diameter of at least 1 mm is required, and if a coil spring is formed using the coil diameter of lIam, the spring diameter will be at least 3 mm.
If the sliding butterfly piece (d) and guide (e) are formed by incorporating a coil spring with a coil diameter of such a large size, the thickness H) will be at least several square meters or more. In addition, as shown in the figure, such a conventional joint structure has a large number of parts, and each part requires dimensional accuracy and is sometimes processed by cutting, which increases the number of manufacturing steps and costs considerably. Not only is it expensive, but it is also heavy. - Because the blade has a highly precise sliding surface, if sweat adheres to it and corrodes, the sliding surface will become inoperable and the vine will no longer function as a joint.

(Objectives of the Invention) The conventional hinge joint structure in which the hinge can be opened more or less than a predetermined angle has the following two problems.

The present invention was developed to solve these problems, and provides a joint structure that is smaller, lighter, and has fewer parts.

(Structure of the present invention) In order to solve the above problems, the spectacle temple joint structure according to the present invention is configured with the following features. In other words, the joint structure basically needs to have a restoring force for the opened temple to return to its original position (regular opening degree).
A magnet is used as the restoring force. One butterfly piece that forms the hinge is brazed to the endpiece, and the magnet is fixed to the other butterfly piece. Another magnet that attracts the magnet and each other is fixed to the temple side, and the attractive force of both magnets is It is constructed so that it slides within a distance range where it acts. However, even when the two magnets are brought close to each other, they do not come into contact with each other; there is some gap between them, and a guide is formed so that the butterfly piece and the temple slide together with the magnets.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a temple joint structure for eyeglass frames according to the present invention will be described in detail based on the drawings.

(Example) Fig. 1 shows one form of an eyeglass frame having a temple joint structure according to the present invention, in which 1 is a rim, 2 is a bridge, 3 is a nose pad butt, 4 is an endpiece, 5 is a temple, and 6 is a Showing the hinge. The rim 1 has a groove formed on its inner periphery, and the lens 7 is fixedly attached to the lens 7 through the V groove, and is brazed symmetrically with respect to the bridge 2. Also, the rim l has a nose pad 3 to support the front frame part with the nose.
．． 3 is attached, and end pieces 4 are brazed to both sides of the front frame. Further, a temple 5 is connected to the armor 4, and the temple 5 can be opened and closed via the hinge. Although the structure of these eyeglass frames is not unique from conventional ones,
The joint structure including the hinge 6 is characterized by a structure that allows the temple 5 shown in the figure to be opened further outward.

FIG. 2 shows a specific form of the joint structure, in which one butterfly piece 8 of the hinge 6 is fixed to the endpiece 4 with brazing, and the other butterfly piece 9 is soldered to the temple 5. It is not attached but is slidably restrained by a guide piece 10.10 formed at the lower end of the temple 5. The guide piece 10.
10 restrains the upper surface 11 and lower surface 12 of the butterfly piece 9, but the same effect can be obtained even if guide pieces are formed on the butterfly piece 9 to restrain the upper and lower surfaces of the temple 5. Therefore, the butterfly piece 9 must be restrained and slid between it and the temple 5, and is formed to have a certain length, and a magnet 14 is fixed to the inner surface 13 with a fastener such as a screw 15. On the other hand, a hinge case 16 is formed on the temple 5, and the butterfly piece 9 to which the magnet 14 is fixed is covered by the hinge case 16, and a magnet 18 is also fixed to the inner surface 17. Here, the means for fixing the magnets 14, 18 does not matter. There is a slight gap Δ1 between the magnet 14 and the magnet 18, and they are not in close contact with each other. Although the gap △2 between the magnet 14 and the inner surface 17 of the hinge case 16 is very small, they are in contact with each other, and the relationship between the magnet 18 and the inner surface 13 of the butterfly piece is also the same, and the horizontal direction This serves as a guide surface to prevent wobbling.

FIG. 4 shows a state in which the crane 5 is forcibly opened at an angle θ,
If you try to open the crane 5 like this, the endpiece 4 and the crane 5 will open.
One point on the abutting surface becomes a fulcrum O, and the butterfly piece 9 of the hinge 6, the temple 5, and the hinge case 16 start sliding while restraining each other.

Therefore, the distance between the two magnets 14 and 18 gradually expands, but the mutual attraction force F acts on them. Also, listening angle θ
A stopper 19 is formed at the tip of the butterfly piece 9 to prevent it from becoming too large, and restricts the sliding movement of the magnet 18 fixed to the hinge case 16.

FIGS. 5 and 6 show other embodiments of the crane joint structure according to the present invention. In this case, the magnets 14 and 18 are directly connected to the butterfly piece 9 and the hinge case without using the hinge case as in the above embodiment. It is fixed to crane 5. Similarly, a stopper 19 for regulating the opening angle from zero is also provided at the tip of the butterfly piece 9.

Although the helical joint structure of the present invention is not limited to the above-mentioned embodiments, the following effects can be obtained.

(Effects) (1) In the crane joint structure of the present invention, one butterfly piece of a hinge connecting the temples so as to be openable and closable is brazed and fixed to the endpiece, and the other butterfly piece is restrained so as to be slidable. This allows the temples to be opened a little wider than the normal opening degree, allowing the temples to absorb external impact forces, preventing damage to the frame as well as situations such as detachment of the lens. To provide glasses that are highly durable and easy to wear without causing rattling.

(2) Also, since this temple joint structure uses a magnet as a restoring force to the base position of the temple (regular opening degree), by using a strong magnet, it is possible to reduce the thickness (H) and length (L).
) can be reduced, a compact structure can be realized, and the slimness of the eyeglass frame is not hindered.

(3) Furthermore, by simply fixing the magnet in a predetermined position with screws, adhesive, etc., no special manufacturing steps are required and the number of parts is small, resulting in a lightweight joint structure.

[Brief explanation of drawings]

Fig. 1 shows an eyeglass frame having a temple joint structure according to the present invention, Fig. 2 shows a detailed view of the joint structure, Fig. 3 shows an enlarged cross-sectional view taken along the line A-A in Fig. 2, and Fig. 4 shows the temple joint structure. the open state,
Fig. 5 shows an example of a joint structure having another form, and Fig. 6 shows an example of a joint structure having another form.
An enlarged cross-sectional view taken along the line B-B in the figure, and FIGS. 7 and 8 respectively show the conventional example. 1...Rim 2...Bridge 3.
...Nose pad para]・4...Endpiece 5...
...Trail 6...Hinge 7...Lens 8.9...Butterfly piece 10...Guide piece
11...Top surface 12...Bottom surface
13.17...Inner surface 14.18...Magnet 15
...screw 16 ... hinge case 19 ...
...Stopper θ...Angle O...
...at the fulcrum
Sakihiko Hisako 5th figure 6th figure

Claims (3)

[Claims] (1) At the joint of the temple, which is connected to the endpieces fixed to both sides of the front frame via a hinge so as to be openable and closable, one of the butterfly pieces of the hinge is brazed and fixed to the endpieces, and the other A butterfly piece is restrained and slidably engaged with a temple, a magnet is fixed to the butterfly piece, another magnet is fixed to the temple side, and a slight gap is interposed between both magnets. The temple joint structure of the eyeglass frame is characterized in that the two elements exert an attractive force on each other. (2) A crane joint structure for an eyeglass frame according to claim 1, wherein the magnet is fixed to the inner surface of the butterfly piece, and the other magnet is fixed to the inner surface of the hinge case formed into a temple. (3) A crane joint structure for a megame frame according to claim 1, wherein the magnet is fixed to the inner surface of the butterfly piece, and the other magnet is fixed to the inner surface of the temple.