JP2013152259A - Temple joint structure of spectacle frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temple joint structure capable of achieving temple folding operation without loosening temples attached to wraparound end pieces attached to both sides of a front part of spectacles for a long period.SOLUTION: Each wraparound end piece is formed as an approximately U shape having an outside piece 11 and an inside piece 10 on its tip part; grooves 9a, 9b are formed on the outside piece 11 and the inside piece 10; a quadrilateral ring 8 is engaged with the grooves 9a, 9b; an approximately U-shaped claw 12 is formed on a base end part of a temple 2; the claw 12 is locked on the ring 8 by engaging a vertical member of the ring 8 with a recess 15; and an outside piece 13 of the claw 12 is urged with spring force of the inside piece 10 of the wraparound end piece tip part 7.

Description

  The present invention relates to a simple crane joint structure that is connected without using a screw so that the crane can be folded without any backlash attached to both sides of the front part of the glasses.

  Glasses can be folded with vines on both sides of the front. That is, when the glasses are put on the face, both the temples are opened, and when the glasses are removed from the face, both the temples are folded and closed. By the way, the hinge connecting the vines of the glasses is small, and it takes a big burden to support the long vine. FIG. 8 is a specific example showing a conventional general eyeglass frame.

  As shown in the figure, in the case of a spectacle frame with a hinge (c), the sliding surface of the hinge (c) wears with the opening and closing operation of the claw (b), and the claw (b) becomes loose. Stability is impaired, for example, if the glasses you are wearing are misaligned. The hinge (c) has a butterfly piece brazed to the crane (b) and the front part (ii) of the armor (d) so that both the hinge pieces can swing via a shaft screw (e). However, slack is generated when the crane is opened or closed.

  In particular, since recent glasses frames are preferred to be light and excellent in springiness, titanium is frequently used as a material that satisfies this requirement. The hinge (C) is often made of titanium, and the wear of the sliding surface is particularly remarkable in the titanium hinge (C). And in the titanium hinge (C), the cut sliding surface is a fine uneven surface like a casting, that is, it is not a smooth surface. Smooth folding operation is not possible. This is because smooth sliding cannot be obtained.

  By the way, the hinge (C) is generally small in order to form a slim spectacle frame, but since the screw hole for screwing the shaft screw (e) must be provided, its height is It is about 2 mm to 3 mm. Therefore, the height dimension H of the armor (d) and the crane (b) is slightly larger than the hinge dimension. That is, in the case of a joint structure using a hinge (c), the height dimension H of the crane (b) is restricted by the hinge dimension and cannot be made smaller than the above dimension.

  On the other hand, when a joint structure using a hinge (c) is used, the operation of accurately brazing each hinge piece constituting the hinge (c) to the armor (d) and the crane (l) is combined with each hinge piece. Therefore, the work of screwing the shaft screw (e) is troublesome. However, various joint structures are also known that are constructed so that the temple (b) can be folded without using the shaft screw (e).

For example, “vine joint and crane joint structure” according to Japanese Patent Laid-Open No. 2000-162553 is a crane joint structure that is extremely simple and easy to manufacture without using a hinge, and that can eliminate rattling of the crane. Therefore, this joint has a hole to fit the pin at the end of the end, and a vertical groove to fit the shaft pin provided on the vine is cut from the inside, and the lateral groove so that the vine can rotate around the shaft pin. have.
However, this crane joint structure is complicated and difficult to manufacture.
"Crane joint and crane joint structure" according to Japanese Patent Laid-Open No. 2000-162553

  Thus, in order to connect the vines so that they can be folded, a joint is necessary, and a shaft screw is generally used for the joint. However, in the case of a joint structure provided with a shaft screw, there are problems as described above. Therefore, the present invention provides a crane joint structure having a function as a spring hinge without using this shaft screw.

  The crane joint structure according to the present invention is configured such that the crane can be folded without using a conventional hinge, and therefore, no shaft screw is used. Therefore, the armor provided on both sides of the front part is folded back at the tip, the tip of the armor is substantially U-shaped, and a ring is fitted to the tip of the armor. Then, a substantially U-shaped key is formed at the base end portion of the vine, and this U-shaped key is locked and connected to a ring fitted to the end portion of the armor.

  By the way, a groove is formed in the end portion of the alloy, and the ring is positioned by being fitted in the groove. The end of the end of the alloy is bent and deformed by fitting the ring, and the U-shaped key formed at the base of the vine is locked to the ring and the spring force is urged by the inner piece of the end of the end of the alloy.

  The hinge joint structure of the present invention does not use a hinge provided with a shaft screw, and therefore is easy to manufacture and assemble. That is, the generally U-shaped end portion of the alloy is bent, and the shape of the base end portion of the vine having the substantially U-shaped claw can also be bent. The ring can be manufactured by cutting a tube (tube material) having a constant cross section. Alternatively, the cut may be brazed by bending.

  And the claw formed at the base of the claw is locked and folded by the ring fitted to the end of the end of the armature, and the spring force of the inner piece of the end of the end of the armature that is generally U-shaped is biased to the claw, Therefore, a stable folding operation is performed without rattling of the vine. On the other hand, the open vine can be pushed slightly outward, and in this case too, it is pushed back by the spring force of the inner piece at the end of the armor, so it has a function as a spring hinge and is worn on the face Glasses are stable. On the other hand, since the joint structure does not use a shaft screw, the height dimension of the joint portion can be reduced, and a slim glasses frame can be configured.

The top view of the spectacles frame provided with the crane joint structure of this invention. The front view and side view of a spectacles frame provided with the crane joint structure of this invention. The shape of the end of the armor that is roughly U-shaped. The shape of the base of the vine, which is roughly U-shaped. The perspective view which shows a crane joint structure. A crane joint structure that shows the folding operation of the crane. A crane joint structure that shows the folding operation of the crane. Conventional glasses frame with hinges.

  1 and 2 show an embodiment of an eyeglass frame having a crane joint structure according to the present invention. In the figure, 1 denotes a front portion, 2 denotes a crane, and the front portion 1 has front rim portions 3 and 3, and both the front rim portions 3 and 3 are connected by a connecting portion 4. Further, on both sides of the front portion 1, there are provided Y-shaped portions 5 and 5 having a substantially L shape. Here, both the front rim parts 3 and 3, the connecting part 4, and the armored parts 5 and 5 are made by punching or cutting a single metal plate into a predetermined shape and performing a curling process. It is also possible to make the front part 1 assembled by brazing the part, the connecting part, the armored part). And the front part 1 of the spectacles frame shown to the figure has attached the rim | limbs 6 and 6 in which a lens fits behind the front rim | limb parts 3 and 3. FIG.

  By the way, the said cranes 2 and 2 are attached to the front-end | tip part of the armor parts 5 and 5 provided in the both sides of the front part 1, and are connected so that it can fold. The end portion 7 of the armor extends from the front portion 1 and is folded back, and its shape is substantially U-shaped. A square ring 8 is fitted to the end portion 7 of the alloy, and the end portion 7 of the armor 7 is constrained in a compressed state.

  FIG. 3 is an enlarged view showing the end portion 7 of the alloy. Grooves 9a and 9b are formed on both sides, and the square ring 8 is fitted and positioned in the grooves 9a and 9b. In this case, the inner piece 10 of the end piece 7 can be bent and deformed in the direction of the outer piece 11, and when the ring 8 is fitted, the inner piece 10 is bent and compressed.

  FIG. 4 is an enlarged view showing the claw 12 formed at the base end portion of the temple 2. The claw 12 has a generally U-shaped shape, forms a smooth convex curved surface 14 from the outer piece 13 to the bottom, and has a convex curved surface. A recess 15 is formed at a position opposite to 14. Therefore, when the temple 2 is attached to the above-described armored portion 5, a convex curved surface 14 formed from the outer piece 13 of the claw 12 to the bottom as shown in FIG. 1 is provided on the inner piece 10 of the end piece 7. It is positioned by engaging with the groove 9b and is locked to the ring 8 in this state.

  FIG. 5 is a perspective view of a state in which the claw 12 is locked to the ring 8 fitted to the end portion 7 of the armor. The inner piece 10 is bent to the end portion 7 of the alloy and the ring 8 is fitted, and the claw 12 is locked to the ring 8. A convex curved surface 14 formed from the outer piece 13 to the bottom of the claw 12 is positioned by engaging with a groove 9b formed in the inner piece 10 of the end piece 7, and the ring 9 is used as a bearing and fitted into the recess 15. The claw 12 can rotate about the 8 vertical members. Moreover, the spring force of the inner piece 10 of the end portion 7 of the armor is applied to the outer piece 13 of the claw 12 locked to the ring 8 and is sandwiched between the ring 8 and the inner piece 10 and stabilized without rattling. It becomes a connected structure, and a smooth folding operation can be performed.

  FIG. 6 shows the rotation state of the claw 12 when the temple 2 is folded. The claw 12 is locked to the vertical member of the square ring 8, and the outer piece 13 is sandwiched and restrained between the inner piece 10 of the end piece 7 and the ring vertical member. Further, when the vertical member of the ring 8 fits into the recess 15 of the claw 12 and the temple 2 is folded, the claw 12 has the vertical member of the ring 8 as an axis, and the convex curved surface 14 has a groove 9b of the inner piece 10 as a bearing. Can be rotated as

  Here, the end portion 7 and the claw 12 of the armor are manufactured by bending a metal plate, and the convex curved surface 14 of the claw 12 locked to the vertical member of the ring 8 is engaged with the groove 9b to thereby generate a spring force. Is brought into a surface contact state, and the temple 2 is stabilized. The temple 2 can be connected to the end portion 7 of the armor by locking the claw 12 provided at the base end to the ring 8. Unlike the conventional connection using a hinge, it can be attached to the ring 8 by one-touch locking.

  By the way, FIG. 6 shows the rotation operation of the claw 12 accompanying the folding operation of the claw 2, but the claw 2 shown by the solid line can be pushed outward. The solid line in FIG. 6 shows a state in which the temple 2 is open. If the door 2 is pushed slightly outward from this position, the tip of the outer piece 13 of the claw 12 is bent and deformed by pressing the inner piece 10 of the end piece 7. Let That is, the inner piece 10 bends and deforms in the direction of the outer piece 11, a spring force is applied to the tip of the outer piece 13, and a spring force that pushes the temple 2 back to the original position indicated by the solid line acts. Thus, the function as a conventional spring hinge can be provided, and the glasses on the face are stable.

  FIG. 7 shows another form of the crane joint structure, and the shape of the claw 12 provided at the base end portion of the temple 2 is a square shape. Similarly, the shape of the groove 9b formed in the inner piece 10 of the end portion 7 of the armor is not a smooth concave groove but is substantially V-shaped. Accordingly, positioning can be performed when the temple 2 is opened and when the temple 2 is folded. That is, the claw 12 has a substantially square shape. When the temple 2 is opened, the corner portion 16a can be engaged with the groove 9b. When the temple 2 is folded, the corner portion 16b can be engaged with the groove 9b. .

  Thus, the function of the claw 12 is the same as that described with reference to FIG. 6 except that the shape of the claw 12 is changed to a square shape, and the outer piece 13 of the claw 12 is sandwiched between the inner piece 10 of the end piece 7 and the ring 8. It is. Therefore, the crane 2 can perform a stable folding operation without rattling.

1 front part 2 crane 3 front rim part 4 connecting part 5 armor part 6 rim 7 armor tip 8 ring 9 groove
10 Inner piece
11 Outer piece
12 claw
13 Outer piece
14 Convex surface
15 recess
16 corners

Claims (3)

  In the joint structure that attaches the vine so that it can be folded to the yoroi provided on both sides of the front part of the glasses, the yoroi has a generally U shape with an outer piece and an inner piece at the tip, and a groove is formed in the outer piece and the inner piece. And a square ring is fitted into the groove, and a substantially U-shaped claw is formed at the base end of the claw, and the claw is locked to the ring by fitting the vertical member of the ring into the recess. A frame joint construction for eyeglass frames, wherein the spring force of the inner piece at the end of the end of the armor is urged to the outer piece. 2. A spectacle joint structure for eyeglass frames according to claim 1, wherein a convex curved surface formed from the outer piece of the claw to the bottom portion is engaged with a groove formed in the inner piece of the end portion of the armor. An inner V-shaped groove is formed in the inner piece of the end of the above-mentioned armor, and the shape of the claw is a quadrangle so that the corners of the quadrangle engage with the V-shaped groove when the vine is folded and opened. The temple joint structure for eyeglass frames according to claim 1.

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