JP3168861U - Eyeglass frame crane joint structure and crane joint member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temple joint structure capable of folding operation without attaching rattle attached to both sides of a front part of eyeglasses forever. SOLUTION: The end pieces 4 and 4 provided on both sides of the front portion have an upper end piece 8 and a lower end piece 9 with a space therebetween, and the upper and lower end pieces are attached with a joint member 7 interposed therebetween. The joint member 7 connects the upper fitting piece and the lower fitting piece, which are parallel to each other, with a shaft 16 having a square cross section, and extends a U-shaped joint spring from the end of the temple and forms a shaft hole having a square cross section. The rectangular cross-section shaft 16 is fitted in the shaft hole to attach the vine to the joint member 7. [Selection diagram] Fig. 6

Description

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

  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 very small, and it takes a great burden to support a long vine. Accordingly, the sliding surface of the hinge is worn with the opening / closing operation, and the stability is impaired, for example, the heel is rattled and the glasses worn are displaced. In addition, the hinge has a butterfly piece brazed to the armature of the vine and the front part, and both the butterfly pieces are connected so as to be able to swing through a shaft screw. Is generated.

  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 is often made of titanium, and the wear of the sliding surface is particularly remarkable in this titanium hinge. And with the titanium hinge, the machined sliding surface is a fine uneven surface like a casting, that is, it is not a smooth surface. Absent. This is because smooth sliding cannot be obtained.

  Thus, conventionally, measures have been taken to prevent wear by interposing a washer on the sliding surface of this small hinge to provide smooth sliding. Japanese Patent Application Laid-Open No. 2004-138718 discloses a “glass frame folding joint and hinge and washer” in which a cylindrical portion of a washer is fitted into a shaft hole of one butterfly piece meshing with each other, and another cylindrical tube of a washer is inserted into the cylindrical portion. It is assembled with the other butterfly piece and the shaft screw. However, the work of attaching a small washer to a small hinge and assembling it is not easy, and the productivity deteriorates. Of course, the production cost is high.

  In addition, the “glass joint structure for eyeglass frame” according to Japanese Patent Application Laid-Open No. 2002-207198 is provided with a bearing at the end of the armor, and a shaft having a circular collar is rotatably fitted in the shaft hole of the bearing, and the shaft is fitted with a crane. The vine can be opened and closed along a slide groove penetrating outward from the shaft hole, and a part of the guide piece forming the slide groove has a notch portion of a size through which the vine is inserted, The pressing portion is brought into contact with the outer peripheral surface of the shaft portion to urge the spring force. Therefore, the crane does not rattle during the folding operation, but the structure becomes complicated and the cost is inevitably high.

“Tail folding joint, hinge and washer for eyeglass frame” and JP-A-2004-138718 “Glass frame crane joint structure” according to Japanese Patent Application Laid-Open No. 2002-207198

  Thus, the conventional crane joint structure has the above-mentioned problems. The problems to be solved by the present invention are these problems. The structure is very simple, the assembly work is easy without using screws, the assembly cost is low, and the vines are always rattling. A spectacle frame crane joint structure and a replaceable crane joint member capable of maintaining a stable folding operation without any problem.

  In the crane joint structure according to the present invention, the crane is attached so that the crane can be folded via the crane joint member. The crane joint member has an upper fitting piece and a lower fitting piece that are parallel to each other at a predetermined interval, and the upper and lower fitting pieces are connected by a shaft having a square cross section. A stopper protrudes from the inner ends of the upper fitting piece and the lower fitting piece, and an engaging piece protrudes from the outer ends of the upper fitting piece and the lower fitting piece.

  Further, armories are provided on both sides of the front part, and the armoring provides a space between the upper armoring piece and the lower armoring piece. A guide is formed on the lower surface of the upper armor piece and the upper surface of the lower armor piece, and an engagement groove is provided in the back of the guide, and the above-mentioned crane joint member is fitted and attached to the guide formed on the upper armor piece and the lower armor piece. It is done. That is, the upper fitting piece fits into the upper armor piece guide, and the lower fitting piece fits into the lower armor piece guide. In addition, the engagement piece protruding from the end portion can be engaged with the engagement groove so that the upper fitting piece and the lower fitting piece fitted to the upper and lower guides are not detached.

  On the other hand, a generally U-shaped joint spring extends from the end of the vine, and a shaft hole is formed in the joint spring. The shape of this shaft hole is a square shaft hole of the same number of angles so that the shaft of the square section of the crane joint member fits, and a joint spring is installed so that the shaft hole fits into the shaft of the joint member attached to the above-mentioned alloy. The vine is pivoted and folded around the axis. Moreover, since the shaft has a square cross section, the folded vine is stable in place, and the open vine is also stable.

  On the other hand, a crane joint member can be attached to the crane side, and a substantially U-shaped joint spring can be extended from the armor side. In other words, a space is provided at the end of the temple to extend the upper and lower pieces, and guides are formed on the lower surface of the upper and the upper piece. The upper fitting piece and the lower fitting piece of the crane joint member are fitted into this guide, and the crane is attached so that the crane can be folded by fitting the shaft of the crane joint member into the shaft hole formed in the joint spring extending from the armature.

  In the crane joint structure of the present invention, a joint member is sandwiched and attached to an upper armor piece and a lower armor piece extending from the front part, and a generally U-shaped joint spring extending from the end of the temple to a square cross-section shaft provided on the joint member is formed. It has a structure that is fitted with a shaft hole. Here, the joint member can be attached by being fitted to a guide formed on the upper armor piece and the lower armor piece, and the crane can be easily attached by connecting the joint spring of the crane to the shaft of the attached joint member.

  In the present invention, since no screw is used to attach the vine, there is no loosening of the shaft screw due to the folding operation of the vine, and the vine does not rattle. The generally U-shaped joint spring extending from the vine can sandwich the square cross-section shaft with the spring force biased, so that even a relatively heavy vine made of resin is stable. If the shaft of the joint member is worn, it can be removed from the armor and replaced.

  Since the shaft of the joint member has a square cross section such as a quadrangle, the vine is stable in the folded state and is also stable in the open state. And when pushing outward from the open state, the spring force to push back to the original position acts by deforming the rectangular cross-section shaft hole of the roughly U-shaped joint spring, which also functions as a conventional spring hinge I can do it. On the other hand, it is also possible to attach a joint member to the temple side, and the effect is the same as when it is attached to the armor side.

It is the spectacles provided with the crane joint structure which concerns on this invention, (a) is a top view, (b) has shown the front view. The side view of the glasses provided with the crane joint structure concerning the present invention is shown. The detailed view which shows the armor of a front part. The specific example which shows the coupling member attached to an armor. Joint spring extending from the end of the temple. When fitting members are attached to the front end alloy. (A) when the vine is opened, (b) when the vine is folded.

  FIG. 1 and FIG. 2 are embodiments showing glasses having a crane joint structure according to the present invention. In the figure, reference numeral 1 denotes a front portion, 2 denotes a crane, and lenses 3, 3 are attached to the front portion 1. In the front part 1, the half rims 6 and 6 are curved and extended to both sides of the central connecting part 5, and the upper outer peripheral edge of the lenses 3 and 3 is fitted in grooves formed along the inner periphery of the half rims 6 and 6, The lower side is supported by high tension yarn such as water yarn.

  However, the present invention relates to a crane joint structure, and the form of the front portion 1 is not limited to the case shown in FIG. Therefore, a ring-shaped rim on which the lenses 3 and 3 are fitted may be provided. And, on both sides of the front portion 1, there are provided yoloi 4 and 4 which are curved and extended in an L shape, so that the temples 2 and 2 can be folded on the yoroy 4 and 4 via the joint members 7 and 7 of the present invention. Installed.

  FIG. 3 shows a detailed view of the armor 4 provided on both sides of the front portion 1. The armor 4 has an upper armor piece 8 and a lower armor piece 9 extending in parallel with each other, and a space 10 is formed between the upper armor piece 8 and the lower armor piece 9. Guide grooves 13 and 13 having a constant width are provided on the lower surface 11 of the upper armor piece 8 and the upper surface 12 of the lower armor piece 9, and engagement grooves 24 and 24 are provided at the back of the guide grooves 13 and 13. .

  FIG. 4 is a specific example showing a joint member 7 for connecting the crane 2, and the joint member 7 has an upper fitting piece 14 and a lower fitting piece 15 which are parallel to each other, and an upper / lower fitting piece. 14 and 15 are connected by a shaft 16. The manufacturing method of the joint member 7 is not particularly limited. However, as shown in FIG. 4A, in consideration of the convenience of assembly, a member that erects the shaft 16 from the lower fitting piece 15 is formed, and the upper end of the shaft 16 is formed. The upper fitting piece 14 can be placed on and connected to each other. The joint member 7 is generally made of a resin, but the shaft 16 has a structure in which a metal pipe (for example, a stainless steel pipe) is fitted, and the shaft 16 has a square cross section.

  A stopper 17 is provided on the lower surface of the distal end portion of the upper fitting piece 14, and the stopper 17 is also formed on the upper surface of the distal end portion of the lower fitting piece 15. In addition, an engagement piece 19 is formed so as to protrude from the upper end surface 18 of the upper fitting piece 14, and the engagement piece 19 is also formed at the end of the lower surface 20 of the lower fitting piece 15. The joint member 7 is fitted and attached to guide grooves 13 and 13 formed in the upper armor piece 8 and the lower armor piece 9 of the armor 4.

  FIG. 5 is a specific example showing the end portion of the temple 2, and a cored bar 20 embedded in the resin-made temple 2 extends from the end portion to form a joint spring 21. The joint spring 21 is generally U-shaped and has a shaft hole 22. The shaft 16 of the joint member 7 is fitted and attached to the shaft hole 22, and the shaft hole 22 has a square shape similar to the cross section of the shaft 16, so that the shaft 16 is pivoted and folded around the shaft 16. The vine 2 will be stable. That is, when the shaft 16 is fitted into the shaft hole 22, the shaft hole 22 is enlarged, and a spring force that sandwiches the shaft 16 is biased.

  FIG. 6 shows a state in which the joint member 7 is attached to the alloy 4. The upper fitting piece 14 and the lower fitting piece 15 of the joint member 7 are fitted into the guide grooves 13 and 13 of the upper and lower pieces 8 and 9, and are formed at the tips of the upper fitting piece 14 and the lower fitting piece 15. The engaged pieces 19, 19 are fastened so as not to be disengaged by engaging with the engaging grooves 24, 24 formed in the back of the guide grooves 13, 13.

  By fitting and attaching the joint member 7 to the armor 4, the upper and lower armor pieces 8 and 9 are connected by the shaft 16, and the stoppers 17 and 17 are disposed at the corners. FIG. 7 shows a case where the crane 2 is connected to a joint member 7 attached to the armor 4. A joint spring 21 extending from the temple 2 has a substantially U shape, and a square shaft 16 is fitted in a square shaft hole 22 formed in the joint spring 21. The shaft 16 is fitted so that the tip end of the joint spring 21 is pushed open and the shaft hole 22 is somewhat enlarged, so that a spring force sandwiched by the joint spring 21 is biased to the shaft 16.

  FIG. 7A shows a case where the temple 2 is open. The tip of the joint spring 21 abuts against the stopper 17 and the degree of opening of the temple 2 is restricted. In this case, if a slight gap is left between the stopper 2 and the temple 2 in an open state, the temple 2 can be slightly pushed outward and functions in the same manner as a spring hinge. That is, if the temple 2 is pushed outward, the shaft hole 22 of the joint spring 21 is expanded by the square cross-section shaft 16, so that the spring force as a reaction force acts to push the temple 2 back. I can do it. However, even when the tip of the joint spring 21 abuts against the stopper 17, the joint spring 21 can function in the same manner as the spring hinge by being bent and deformed.

  (B) has shown the state by which the vine 2 was folded. When the crane 2 is folded, the shaft hole 22 of the joint spring 21 is temporarily enlarged, but at the folded position, it is returned to the size of the original shaft hole 22 and stabilized. Circular and thin seats 23 and 23 are formed on the lower surface of the upper fitting piece 14 and the upper surface of the lower fitting piece 15 of the joint member 7, and the joint spring 21 is in contact with both seats 23 and 23 when the temple 2 is folded. Can rotate and slide smoothly.

  By the way, the above embodiment has a structure in which the joint member 7 is attached to the armature side, and the shaft 16 of the joint member 7 is fitted into the shaft hole 22 of the joint spring 21 extending from the temple 2 and is sandwiched by energizing the spring force. In the present invention, the joint member 7 can be attached to the temple side. Therefore, a space is provided between the ends of the vines to extend the upper and lower vine pieces, and the joint member 7 is fitted between the upper and lower vine pieces.

  Since a specific mounting structure is common to the above-described embodiment, detailed description is omitted. Then, a generally U-shaped joint spring is attached to the end of the armor, and the rectangular section shaft of the joint member is fitted into and connected to a shaft hole having a square section formed in the joint spring. Therefore, the temple 2 to which the joint member is attached is turned and folded around the shaft of the joint member fitted in the shaft hole of the joint spring of the alloy 4.

DESCRIPTION OF SYMBOLS 1 Front part 2 crane 3 Lens 4 Yoroi 5 Connection part 6 Half rim 7 Joint member 8 Upper end piece 9 Lower end piece
10 space
11 Bottom
12 Top view
13 Guide groove
14 Upper mating piece
15 Bottom mating piece
16 axes
17 Stopper
18 Top view
19 Engagement piece
20 Bottom
21 Joint spring
22 Shaft hole
23 seats
24 engaging groove

Claims (8)

In the joint structure that attaches the vine so that it can be folded on both sides of the front part of the glasses, the armor provided on both sides of the front part has an upper armor piece and a lower armor piece with a space in between, and these upper and lower armor pieces Is attached with a joint member sandwiched between them. The joint member connects the upper fitting piece and the lower fitting piece which are parallel to each other with a shaft having a square cross section, and extends a substantially U-shaped joint spring from the end of the crane and has a square cross section. A temple joint structure for eyeglass frames, characterized in that a shaft hole is formed, and the above-mentioned square cross-section shaft is fitted into the shaft hole and a temple is attached to the joint member. The spectacle joint structure for eyeglass frames according to claim 1, wherein a stopper with which a joint spring tip abuts when the temple is opened is provided at an end of the joint member. In the joint structure that attaches the temple so that it can be folded on both sides of the front part of the glasses, there is a space between the edge of the temple, and there are upper and lower temple pieces. The joint member is connected with the upper fitting piece and the lower fitting piece parallel to each other by a shaft having a square cross section, and a generally U-shaped joint spring is extended from the end of the end and a shaft hole having a square cross section is formed. A spectacle joint structure for eyeglass frames, wherein the square cross-section shaft is fitted in the shaft hole so that the temple can be folded via the joint member. In a joint member that can be attached to a temple so that it can be folded on both sides of the front part of the glasses, the joint member has an upper fitting piece and a lower fitting piece that are parallel to each other, and the upper and lower fitting pieces have a square cross section. This joint member is attached by sandwiching it between an upper end piece and a lower end piece provided on the armature, and a substantially U-shaped joint spring extending from the end of the square is attached to the above-mentioned square section shaft. A crane joint member, wherein the formed shaft hole is fitted and attached. In a joint member that can be attached to a temple so that it can be folded on both sides of the front part of the glasses, the joint member has an upper fitting piece and a lower fitting piece that are parallel to each other, and the upper and lower fitting pieces have a square cross section. The joint member is attached by being sandwiched between an upper and a lower piece provided at the end of the temple, and a generally U-shaped joint extending from the end of the end of the square section. A crane joint member, wherein a shaft hole formed in a spring is fitted and attached. The crane joint member according to claim 4 or 5, wherein a metal pipe is fitted on the shaft having a square cross section. The crane joint member according to claim 4, 5, or 6, wherein a stopper is formed at the lower end of the upper fitting piece and the upper end of the lower fitting piece. The crane joint member according to claim 4, 5, 6, or 7, wherein an engagement piece is formed to project from an upper end tip of the upper fitting piece and a lower end tip of the lower fitting piece.

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