JP3150290U - Glass frame frame joint structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an armature on both sides of a front portion, and a vine mounted so as to be foldable via a hinge joint attached to the tip of the armature is further opened under the action of a spring force from an opened state when wearing glasses. Providing a crane joint structure that can be pushed slightly in the direction. SOLUTION: A ring-shaped spring 14 is attached to a hinge 7 so that the ring-shaped spring 14 is bent in the same direction as two outer spring pieces 15, 15 curved in one direction at a predetermined interval. One curved middle spring piece 16 is integrally formed, and the tips of the outer spring pieces 15 and 15 and the tips of the middle spring piece 16 are in contact with the armor tip 20 and the temple end 19. [Selection] Figure 6

Description

  The present invention relates to a temple joint structure for an eyeglass frame that connects the eyeglass frame temples so that the eyeglass frame can be folded and can be slightly opened outwardly by a spring force.

  A joint that functions so as to be able to be pushed slightly outward from the state in which the vine is open is called a spring hinge, and is often used as a means for connecting the vines to the vine. Japanese Patent Application Laid-Open No. 2001-290108 “Connecting structure” is a structure in which a temple and an armor of a spectacle frame are connected so as to be relatively rotatable, and a pair of pieces formed by bifurcating at one end of a temple. It is provided to secure a gap in the horizontal direction, and a hole is formed in each piece, and a groove facing each piece is extended along the longitudinal direction of the temple. A moving member that is held by the urging member and urged against the armor by the urging force of the urging member is engaged with the urging member and is movably positioned in the temple gap.

  In this way, the open vine is configured so that it can be pushed outward by energizing the spring force in the return direction, and a coil spring is used for this purpose. That is, although the spring force is generated by compressively deforming the coil spring, a sliding member for expanding and contracting the coil spring is required for that purpose. Therefore, when the sliding member is hindered due to the intervention of dust or the occurrence of rust, the opening operation of the vine does not function smoothly.

  FIG. 7 shows a crane joint structure called the most basic spring hinge. That is, the basic idea of the spring hinge is that a fixed butterfly piece (b) is brazed and fixed to the armor (b), and the other butterfly piece is a sliding butterfly piece (c) to allow a certain distance of sliding. This can give the crane (d) an outward opening.

  A guide groove is formed in the crane (d), and the sliding butterfly piece (c) slides with the guide groove as a guide, but there is a coil spring (e) in the inner cavity of the sliding butterfly piece (c). When the crane (d) is opened to the outside, the sliding butterfly piece (c) is pulled and compressed toward the fixed butterfly piece (b) side. The coil spring (e) hits a claw (g) provided at the inner cavity entrance of the sliding butterfly piece (c) and locked in the groove (f) of the claw (d), and the claw (g) functions as a stopper. is doing. As a result, the restoring force of the coil spring (e) acts on the temple (d) and tries to return the temple (d) to its original position.

  By the way, the hinge structure in which the coiled spring (e) is built in the sliding hinge piece (c) is complicated as shown in the figure, and therefore, the number of manufacturing steps increases, resulting in an expensive spring-loaded hinge. . In addition, since the structure is complicated, there is a problem that it is easy to break down and difficult to repair once it breaks down. If the coil spring (e) and the metal core are pushed into the internal cavity of the sliding butterfly piece (c) and locked to the claw (g), the claw (g) and the coil spring (e) cannot be removed.

  That is, the claw (g) is restrained by the guide of the sliding butterfly piece (c), and the claw (g) locking piece (chi) fits into the slot (f), and the head of the metal core (re) The spring comes into contact with the claw (g) with a spring force, and a force to push the locking piece (h) into the slot (f) is applied. Accordingly, the claw (g) cannot be removed from the sliding butterfly piece (c), and repair is impossible.

  Of course, there are various other joint structures that can perform the same function as the spring hinges, and the vine fits from the side of the face to the head when wearing glasses. However, the conventional joint structure is generally complicated and difficult to assemble, and therefore, repair is not easy. When the spring hinge shown in FIG. 7 is attached, it is necessary to provide a guide on which the sliding hinge piece (c) slides on the temple (d), and insert the coil spring (e) and the core bar to insert the claw. (G) must be fitted, and it is not as easy as brazing with a general hinge.

  In the spring hinge shown in the figure, the sliding butterfly piece (c) that accommodates the coil spring (e) and the claw (g) protrudes greatly inside the claw (d), and the appearance of the glasses is impaired. It will be heavy. It is not suitable for appearance as a spring hinge for a slim glasses frame in recent years.

In this manner, the crane joint structure having a spring hinge function is different from a general hinge joint in basic structure, and for this reason, the spring hinge joint is manufactured separately from an ordinary hinge joint. That is, the manufacturing cost increases because the basic structure is different, not a structure having a spring hinge function by adding another part to the hinge joint which is a standard part.
"Connecting structure" according to Japanese Patent Application Laid-Open No. 2001-290108

  As described above, various crane joint structures that function as spring hinges are known. However, by configuring a spring hinge, its appearance and form are different from those of a general hinge joint, and the manufacturing cost is also increased. The crane joint structure according to the present invention provides a crane joint structure that is simply configured and has a spring hinge function by combining a ring-shaped spring with a general hinge.

  In the temple joint structure of the eyeglass frame according to the present invention, armor is provided on both sides of the front portion, and the temple is connected to the armor. A joint is interposed between the armor and the crane, and the crane is folded through the joint. Here, the crane joint of the present invention has a structure in which an ordinary hinge is mainly used and a ring-shaped spring is combined with the hinge. That is, they are combined in a state in which the hinge shaft is held by a ring-shaped spring.

  The ring-shaped spring is a ring shape that is curved with a predetermined radius of curvature, and one intermediate spring piece is curved and extended from one side to the other side, and two outer spring pieces are curved and extended to the other side. ing. Therefore, the ring-shaped spring combined so as to embrace the hinge shaft portion with the middle spring piece and the outer spring piece makes the tip of the outer spring piece abut the tip of the armor and the tip of the middle spring piece becomes the tip of the temple. It is attached so that it abuts. Of course, the tip of the outer spring piece may be brought into contact with the temple end, and the tip of the middle spring piece may be brought into contact with the end of the alloy. Therefore, when the vine is opened, a slight gap remains between the end of the armor and the end of the vine.

  The crane joint structure according to the present invention is a structure in which a ring-shaped spring is combined with a hinge, and a ring-shaped spring is added to an ordinary hinge, so that the manufacturing cost is reduced. That is, a spring hinge can be obtained simply by manufacturing and incorporating a ring-shaped spring. Therefore, a spring hinge can be configured by attaching a ring-shaped spring to the hinge joint hinge of the glasses currently used.

  The crane joint structure of the present invention is a simple structure in which a ring-shaped spring is simply attached to a normal hinge shaft. Will not be damaged. That is, as long as the crane is provided with a hinge joint, a spring hinge function can be imparted by attaching a ring-shaped spring to any design of eyeglass frame.

  FIG. 1 shows a spectacle frame having a crane joint structure according to the present invention. In the figure, reference numeral 1 denotes a front part, 2 denotes a crane, and the front part 1 is composed of both rims 3 and 3 on which a lens fits and a connecting member 4, and outer parts 5 and 5 are brazed to the outside of the rims 3 and 3 Is attached. In addition, nose pads 6 and 6 are attached to the inside of the rims 3 and 3 (center of the front portion).

  By the way, the above-mentioned crane 2 is connected to the end of the armor via the spring hinge 7, and the crane 2 is folded, but the opened crane 2 can be further pushed outward slightly. The spring hinge 7 connecting the temple 2 is configured by attaching a ring-shaped spring to an ordinary hinge. When the temple 2 is pushed outward, the ring-shaped spring is deformed, and the temple 2 is The restoring spring force works.

  FIG. 2 shows the two hinge pieces 8 and 9 constituting the hinge in a separated state. One butterfly piece 8 is brazed to the tip of the armor 5, and the other butterfly piece 9 is brazed to the end of the crane 2, and the one butterfly piece 8 fits and engages with the other butterfly piece 9. Connected by screws. The two butterfly pieces 8 and 9 constituting the hinge are the same as the conventional one, but the front end of the inner surface of the armor to which the butterfly piece 8 is brazed has a cutout portion 10 that is cut obliquely.

  Similarly, the tip of the inner surface of the vine to which the other butterfly piece 9 is brazed also forms a cutout portion 11 that is cut obliquely. The notches 10 and 10 of the armor 5 are provided on both sides of the butterfly piece 8, and the notches 11 of the temple 2 are formed in the recesses of the butterfly piece 9. FIGS. 3 (a) and 3 (b) are enlarged views showing the end of the armor and the end of the crane. As shown in FIG. The center is cut out on the inner surface 13 of the vine end leaving a portion where the butterfly piece 9 is brazed. By the way, these notches 10, 10, and 11 are for preventing the ring-shaped spring attached to the hinge from coming into contact with the inner surface 12 of the end of the armature 12 and the inner surface 13 of the vine end.

  FIG. 4 is an embodiment showing a ring-shaped spring 14 combined with the hinge. The ring-shaped spring 14 has two curved outer spring pieces 15, 15 and one middle spring piece 16. The outer spring pieces 15, 15 and the middle spring piece 16 are connected to each other. The tip 18 of the middle spring piece 16 is fitted in a space 17 formed between the outer spring pieces 15 and 15 that are curved and extended at a predetermined interval. Therefore, if a pressing force is applied to the tips of the outer spring pieces 15 and 15 and the tip of the middle spring piece 16, the ring-shaped spring is deformed to generate a spring force.

  The spring hinge of the present invention has a structure that generates a spring force by deforming the ring-shaped spring so as to increase the diameter when pushing the temple 2 outward. Therefore, the tips of the outer spring pieces 15 and 15 are in contact with the end of the temple, and the tips of the middle spring piece 16 are in contact with the tip of the armor. Therefore, if the temple 2 is pushed outward, the gap left between the end of the armor and the end of the temple can be reduced and the ring-shaped spring can be deformed.

  By the way, this ring-shaped spring is cut or punched into a shape shown in FIG. 5, that is, a shape in which the middle spring piece 16 extends from the bottom of both outer spring pieces 15, 15, and this is bent into a ring shape. This ring-shaped spring has a very small outer diameter of about 4 mm, and the material shown in FIG. 5 before bending is about 14 mm in length L and the width M of each spring piece is 1.5 mm. However, by using precision punching (fine blanking), it is possible to perform punching with high accuracy without causing a fracture surface. As a result, the dimensional accuracy of the ring-shaped spring to be bent is increased.

  FIG. 6 shows a spring hinge 7 formed by combining the ring-shaped spring 14 with a hinge. In this way, the hinges are attached so as to embrace the hinges, the distal ends of the outer spring pieces 15, 15 are in contact with the temple end 19, and the distal end of the middle spring piece 16 is in contact with the end piece 20. A slight gap 21 is interposed between the end of the armature 20 and the end 19 of the temple, and the temple 2 can be pushed outward. Deforms and expands in diameter. Therefore, the spring force accompanying this deformation is urged to the temple 2, and the spring force that pushes the temple 2 back is applied. That is, it can function as a conventional spring hinge.

Glasses frame equipped with the crane joint structure of the present invention. A butterfly piece brazed to the end of the armor and the end of the vine. The enlarged view which shows the end of the armor and the vine end before the butterfly piece is brazed. An embodiment showing a ring-shaped spring. The material of the ring-shaped spring before bending. Spring hinge with a ring-shaped spring attached. Conventional spring hinge.

DESCRIPTION OF SYMBOLS 1 Front part 2 Crane 3 Rim 4 Connecting member 5 Yoroi 6 Nose pad 7 Hinge 8 Butterfly piece 9 Butterfly piece
10 Notch
11 Notch
12 Inner end
13 Inner surface of the vine end
14 Ring-shaped spring
15 Outer spring piece
16 Medium spring piece
17 space
18 Tip
19 vine end
20 Yoro tip
21 Clearance

Claims (2)

The armor is provided on both sides of the front part, and the vine attached so that it can be folded via the hinge joint attached to the end of the armor is slightly open outward from the open state when wearing glasses. In the crane joint structure that can be pushed open, the ring-shaped spring is attached to the hinge so that it is opposite to the two outer spring pieces curved in one direction at a predetermined interval. One middle spring piece curved in the direction is formed integrally, the tip of the outer spring piece and the tip of the middle spring piece are in contact with the end of the armor and the tip of the temple, A temple joint structure for eyeglass frames, wherein the tip of the spring piece and the tip of the middle spring piece are pressed to be deformed so that the outer diameter of the ring-shaped spring is enlarged. The spectacle joint structure for eyeglass frames according to claim 1, wherein the inner end surface of the armor and the inner surface of the end portion of the temple are provided with cutout portions that are obliquely cut out.

Images