JP3021643U - Spiral joint structure for eyeglass frames - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a joint structure for connecting vines of eyeglass frames in a foldable manner, and which allows stable folding operation forever without rattling. [Structure] On the side of the armor 3, there is a cylindrical bearing portion 7 which is a regular polygonal shape made of a spring material and has a notch groove 8 in a part thereof, and the same regular polygonal columnar body is attached to this bearing portion 7. The shaft 10 is rotatably fitted and the temple 5 is connected to the shaft 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a temple joint structure of a spectacle frame configured without using a hinge.

[0002]

[Prior art]

 The spectacle frame has a vine that can be folded. Conventionally, hinges have been used as folding means for the vines, and the hinges are fixed to the armorings brazed on both sides of the front frame, and the vines are connected via the hinges. Since hinges are relatively small, it is difficult to connect long cranes, and the hinges often wear and rattle.

Of course, the means for connecting the vine so that it can be folded is not necessarily limited to a hinge, but in general, it has an axis serving as a bending center for folding the vine. In the case of a hinge, it has a shaft screw that connects both hinge pieces, and it is the center of bending of the vine, but the rattling of the vine is often due to the looseness of this shaft screw. . Therefore, a slip joint structure that does not use the shaft screw is desired.

[0004]

[Problems to be solved by the present invention]

 As described above, the temple joint structure of the eyeglass frame has the above problems. The problem to be solved by the present invention is this problem, and it provides a crane joint structure in which the vine does not rattle without using a shaft screw.

[0005]

[Means for Solving the Problems]

 The temple joint structure of the present invention comprises a bearing portion formed of a spring material and a shaft portion restrained by the bearing portion. The bearing part is arranged around the shaft part and is cut out at one place, and the width of the cutout groove can be changed. For example, when a tubular bearing portion having a polygonal cross section is formed, the shaft portion also has a prismatic shape having the same polygonal cross section and is fitted into a shaft hole of the bearing portion to be assembled.

Therefore, when the bearing portion is fixed, the shaft portion fitted in the shaft hole can rotate intermittently. In this case, the bearing portion is spring-deformed to rotate the shaft portion. Tolerate. Then, when the side surface of the shaft portion is in contact with the inner surface of the bearing portion, it is stabilized by the spring force, and when the shaft portion rotates and the corner hits the inner surface of the bearing portion, the bearing portion is pushed open. When rotated, the side surface of the shaft portion again contacts the inner surface of the bearing portion and becomes stable.

By the way, if the bearing portion is fixed to the end side and the shaft portion is formed on the temple side, the temple is folded by the rotation of the shaft portion. Of course, the bearing portion may be provided on the temple side and the shaft portion may be formed on the end piece side. The joint structure of the present invention is not limited to the combination of polygons, but a combination of a circular cylindrical bearing portion and a cylindrical shaft portion, and an uneven portion at a predetermined position on the side surface of the shaft portion and the inner surface of the bearing portion. It can also be formed and fitted together. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0008]

【Example】

 FIG. 1 is an embodiment showing an eyeglass frame equipped with the temple joint structure of the present invention. As is well known, the spectacle frame has rims 1 and 1 to which lenses are fitted connected to each other by a connecting member 2, and end pieces 3 and 3 are brazed to the outside of the rim. The temple 5 is connected to the armor 3 via a joint 4 so that the temple 5 can be folded. Nose pads 6 are attached to the inside of the rims 1 and 1.

The basic structure of the spectacle frame is the same as the conventional one, but the joint structure for connecting the temples 5 is different. That is, this joint structure does not use a hinge, but is configured by a combination of a bearing portion made of a spring material and a shaft portion fitted in the shaft hole. FIG. 2 is a specific example showing the temple joint structure of the present invention.

In the joint structure shown in the figure, the bearing 7 is formed into an octagonal tubular shape and brazed to the end piece 3, and a cutout groove 8 is formed in a part of the brazed portion. The same octagonal shaft 10 is fitted in the shaft hole 9 of the cylindrical bearing 7. The shaft portion 10 is constrained by the bearing portion 7, and the bearing portion 7 made of a spring material urges a spring force so as to hold the shaft portion 10 and stably holds it without rattling. However, the shaft portion 10 can rotate, and in this case, the bearing portion 7 expands and deforms, and the notch groove 8 expands.

Of course, the rotation is intermittently performed every 45 degrees, and the tool 5 attached to the shaft portion 10 is folded by the rotation of the shaft portion 10. A shaft 11 is attached to the center of the shaft portion 10, and a U-shaped connecting portion formed at the temple end via the shaft 11 is fixed to the shaft portion 10. In this case, in order to prevent the shaft 11 and the connecting portion 12 from rotating, a part of the shaft 11 is devised so as to have a rectangular cross section. The bearing portion 7 is restrained by the upper piece 13a and the lower piece 13b of the connecting portion 12 to eliminate the rattling of the temple 5.

By the way, when the shaft portion 10 fitted to the spring bearing portion 7 tries to push the temple 5 further outward, the groove width of the cutout groove 8 is expanded and at the same time, the restoring force acts. Then I try to return the crane to its original position. Therefore, it can exert the same effect as the spring hinge. However, when the rotation angle of the shaft portion 10 becomes large, the restoring force to rotate the shaft portion 10 in reverse does not act, and therefore the angle is limited to a slight angle.

FIG. 3 shows a case where the temple 5 is folded. In this way, the vine 5 is rotated by 45 degrees and folded, but the vine is stable without rattling in the folded state and when opened. FIG. 4 shows an embodiment in which the attachment shape of the temple 5 connected to the shaft portion 10 is different, and the joint portion 12 and the temple 5 are bent and connected. Therefore, the crane 5 can be located on the same line as the armor 3.

By the way, in this embodiment, although the regular octagonal bearing portion and the shaft portion are used, a regular quadrangle may be used, and other suitable polygons may be freely used. Further, as shown in FIG. 5, a circular cylindrical bearing portion 14 and a cylindrical shaft portion 15 may be used. However, in this case, concave grooves 16a and 16b are formed on the inner circumference of the bearing portion 14, and convex portions 17 are formed on the outer circumference of the shaft portion 15. The convex portion 17 is fitted in the concave grooves 16a, 16b, but is positioned so as to be fitted when the temple 5 is opened and folded.

In FIG. 5, the concave grooves 16a and 16b are formed at two positions of the bearing portion 14, but another concave groove may be provided between the concave grooves 16a and 16b. As described above, in the crane joint structure of the present invention, the shaft portion is fitted to the spring bearing portion to enable rotation, and the temple is connected to this shaft portion, and the following effects can be obtained. Can be done. Of course, it is the same if the shaft portion is fixed to the end side and the bearing portion is provided on the temple side.

[0016]

[Effect of device]

 The shaft joint unlike the conventional hinge joint is not used in the crane joint structure of the present invention, and the shaft screw does not become loose and the temple does not rattle. In other words, it consists of a spring bearing and a shaft, and since the shaft is constrained by the bearing in a state of being biased by a spring force, stable rotation is always performed without rattling, thus The folding operation of the crane connected to the section is performed smoothly.

[Brief description of drawings]

FIG. 1 is an eyeglass frame using the temple joint structure of the present invention.

FIG. 2 is an embodiment of the temple joint structure of the present invention.

[Fig. 3] When the vine is folded.

FIG. 4 is another embodiment of the temple joint structure.

FIG. 5 is still another embodiment of the temple joint structure.

[Explanation of symbols]

 1 rim 2 connection member 3 end piece 4 joint part 5 temple 6 nose pad 7 bearing part 8 cutout groove 9 shaft hole 10 shaft part 11 shaft 12 connection part 13 upper and lower piece 14 bearing part 15 shaft part 16 concave groove 17 convex part

Claims (4)

[Scope of utility model registration request] 1. A temple joint structure in which a temple is foldably connected to an armor provided on both sides of a front frame of a pair of glasses, and a regular polygonal shape made of a spring material is provided on the armature side, and a cutout groove is formed in a part thereof. A spectacle characterized in that a holding cylinder is provided as a bearing, and a regular polygonal columnar body is rotatably fitted in a shaft hole of the bearing as a shaft, and a temple is connected to the shaft. Frame joint structure. 2. In a temple joint structure in which a temple is foldably connected to an armature provided on both sides of a front frame of eyeglasses, a cylindrical shape made of a spring material is formed on the armature side and a groove is formed in a part thereof. A bearing is provided, and the shaft hole of the bearing is also rotatably fitted with the columnar body as the shaft, and the inner circumference of the bearing has a plurality of concave grooves and the outer circumference of the shaft is convex. A temple joint structure for an eyeglass frame, characterized in that a shaft is formed and a temple is connected to the shaft portion. 3. A temple joint structure in which a temple is foldably connected to an armor provided on both sides of a front frame of eyeglasses. In the temple side, a regular polygonal shape made of a spring material and a part of which has a notch groove. A spectacle characterized in that a holding cylinder is provided as a bearing portion, and a regular polygonal columnar body is rotatably fitted in a shaft hole of the bearing portion as a shaft portion, and an end piece is connected to the shaft portion. Frame joint structure. 4. A temple joint structure in which a temple is foldably connected to an armor provided on both sides of a front frame of eyeglasses, wherein the temple side is formed of a spring material and is partially formed with a notch groove. A bearing is provided, and the shaft hole of the bearing is also rotatably fitted with the columnar body as the shaft, and the inner circumference of the bearing has a plurality of concave grooves and the outer circumference of the shaft is convex. The spectacle joint structure of the spectacle frame is characterized in that a shaft is formed and an end is connected to the shaft.