JP3138488U - Eyeglass frame spring joint and crane joint structure using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide further outwards under the action of a spring force from a state in which a vine provided on both sides of a front part and attached so that it can be folded via a joint attached to the end of the front end is opened when wearing glasses. Providing a crane joint structure that can be pushed open slightly.
SOLUTION: A spring joint 5 is substantially U-shaped and a fixing portion 9 provided at one end thereof is fixed to the inside of the armor, and a bottom portion of the approximately U-shape is fitted into an opening 8 formed in the armor 4 and is attached to the other end. The provided joint portion 6 is arranged on the inner end of the end of the armor, the temple 2 is connected, and the stopper piece 13 protrudes outwardly from the joint portion 6 so as to abut the temple end surface 15 when it is opened. A slight gap 18 is formed between the inner end 16 and the inner end 16 of the end piece.
[Selection] Figure 4

Description

  The present invention provides a frame joint structure and a frame joint structure that connects the frame frame temples in a foldable manner and allows the frame to be slightly opened outwardly when the spring force is biased from the open state. The present invention relates to a spring joint having high safety.

  A joint that functions so as to be able to be pushed slightly outward from the state in which the vine is open is generally called a spring hinge, and has been widely used as a means for connecting a vine of a spectacle frame. For example, a “connecting structure” according to Japanese Patent Application Laid-Open No. 2001-290108 connects a temple of a glasses frame and an armor so as to be relatively rotatable, and a pair of pieces formed by bifurcating at one end of a temple. A body is provided to secure a gap in the horizontal direction, 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 is 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. 5 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 attaching the spring hinge shown in FIG. 5 above, it is necessary to provide a guide on which the sliding hinge piece (c) slides on the temple (d), and insert a coil spring (e) and a metal core, (G) must be fitted, and it is not as easy as brazing with a general hinge.

In addition, 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 addition to the structure shown in FIG. 5, spring hinges having various structures are known. However, if the spring is exposed and comes off when the temple is pushed open, it may be dangerous.
"Connecting structure" according to Japanese Patent Application Laid-Open No. 2001-290108

  Thus, the conventional crane joint structure has the above-mentioned problems. The problems to be solved by the present invention are these problems, and a crane joint structure configured to have the same function as a conventional spring hinge with a simple structure without impairing the appearance of the glasses frame, and A highly safe spring joint constituting the joint structure is provided.

  In the temple joint structure of the eyeglass frame according to the present invention, a yoke is provided on both sides of the front portion, and a crane is connected to the yoke through a spring joint. That is, a spring joint is provided between the armor and the crane, and the crane is folded via the spring joint. The shape of the spring joint is generally U-shaped, one end is fixed to the end piece, and the other end is provided with a joint portion to which a crane is connected. A stopper projecting outward is formed in the joint portion, and a thin deformed portion is provided on the substantially U-shaped bottom portion serving as an intermediate portion in order to enhance the spring property.

  On the other hand, the armor is brazed to the front part, and one end of the spring joint is fixed to the armor, but forms an opening into which the substantially U-shaped bottom part of the spring joint fits. That is, the bottom of the U-shaped spring joint is fitted and attached to the opening provided in the armor, and the spring is deformed in this state. And the joint part used as the other end is located inside the front end of the armor, and the joint part provides an appropriate gap between the inner surface of the armor front end. When the crane is opened and pushed outward, the spring joint is bent and deformed so that the joint comes into contact with the inner surface of the end of the end of the alloy.

  In the crane joint structure of the present invention, the crane is attached via a generally U-shaped spring joint fixed to the armor, and the crane is connected to the joint portion of the spring joint and folded. If the temple is opened and pushed outward, the edge of the temple hits the stopper and the spring joint is bent and deformed. As a result, a spring force that pushes the temple inward is urged. That is, it functions in the same way as a conventional spring hinge, but its construction is simple, so the production cost is low and it does not break down.

  By adjusting the thickness of the U-shaped bottom portion of the generally U-shaped spring joint fixed to the armor, the magnitude of the spring force when pushing the temple is changed. In addition, a gap is formed in advance between the joint portion of the spring joint and the inner surface of the end of the end of the armature, so that the bending deformation of the spring joint is performed within the range of the gap, and when the temple is pushed open, Excessive bending deformation is not given, and the substantially U-shaped bottom portion is positioned and guided by fitting into the opening of the armor, and the spring joint is bent and deformed in the state of fitting into the opening, so that safety is excellent.

  FIG. 1 shows a part of a spectacle frame having a crane joint structure according to the present invention. In the figure, 1 is a front part, 2 is a temple, 5 is a safety hinge which is one form of a spring joint, and the front part 1 is composed of both rims 3 and 3 on which lenses are fitted and a connecting member (not shown). On the outside of 3, Yoroi 4 is attached by brazing. A nose pad (not shown) is attached to the inside of the rims 3 and 3 (center of the front portion).

  By the way, the safety hinge 5 has one end fixed to the armor 4 and the temple 2 is connected to a joint portion 6 provided at the other end. Accordingly, the temple 2 is folded around the shaft screw 7 of the joint portion 6 and can be slightly pushed outward from the opened state. That is, the crane joint structure of the present invention has a function as a spring hinge by the safety hinge 5.

  FIG. 2 shows the inner side of the armor 4, the safety hinge 5, and the temple 2. The armor 4 is fixed to the rim 3 by brazing, and the armor 4 is formed with an elongated opening 8 to form the safety hinge 5. A part is fitted in the opening 8. One end of the safety hinge 5 is fixed to the armor 4 by brazing or the like, and the safety hinge 5 is guided by positioning by fitting a part of the safety hinge 5 into the opening 8, but the safety hinge 5 can be bent and deformed. Yes.

  FIG. 3 is a specific example showing the safety hinge 5 according to the present invention, in which (a) is a left side view, (b) is a plan view, and (c) is a right side view. The safety hinge 5 is substantially U-shaped, and a fixed portion 9 is formed at one end and a joint portion 6 is formed at the other end. A substantially U-shaped bottom portion between the fixed portion 9 and the joint portion 6 is a deformed portion 10 and is thinned so as to be easily deformed.

  The joint portion 6 has two joint pieces 11a and 11b, leaving a predetermined space 12 between them. One joint piece 11a has a screw hole, and the other joint piece 11b has a stepped hole. Has been. A joint piece 17 formed on the temple 2 is fitted in the space 12 and is screwed through a shaft screw 7. Further, a stopper piece 13 protrudes outward from the joint portion 6, and a contact surface 14 is formed on the stopper piece 13.

  By the way, the fixing portion 9 of the safety hinge 5 configured as described above is fitted and brazed into a groove formed inside the alloy 4 as shown in FIG. 2, and the deformable portion 10 is fitted into the opening 8 and the joint portion. 6 is disposed inside the tip of the armor 4. In addition, the joint portion 6 leaves a slight gap between the inner end of the end of the alloy. Then, the crane 2 is connected to the joint portion 6 and folded.

  FIG. 4 is a plan view showing the crane joint structure of the present invention, and the safety hinge 5 is attached to the armor 4 while maintaining the positional relationship shown in FIG. The figure shows a state in which the temple 2 is open. In this case, the temple end face 15 comes into contact with the contact face 14 of the stopper piece 13 and stops. However, the temple 2 can be slightly pushed outward and the safety hinge 5 is bent and deformed.

  If the temple 2 is pressed outward, the end face 15 of the temple abuts against the contact surface 14 of the stopper piece 13 and a moment is generated in the safety hinge 5 with the fixed portion 9 as a base point. Then, the safety hinge 5 is bent and deformed, and as a result, the joint portion 6 comes into contact with the inner end 16 of the end of the alloy. A slight gap 18 is provided between the joint 6 and the inner end 16 of the end of the armature so that the safety hinge 5 can be bent and deformed.

Part of a spectacle frame equipped with the crane joint structure of the present invention. The inner structure of the crane joint structure of the present invention. Specific example of safety hinge. The top view which shows the crane joint structure of this invention. Conventional spring hinge.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front part 2 Tsuru 3 Rim 4 Yoroloy 5 Safety hinge 6 Joint part 7 Shaft screw 8 Opening 9 Fixing part
10 Deformation part
11 Joint piece
12 space
13 Stopper piece
14 Contact surface
15 vine end face
16 Inner end of Yloy
17 Joint piece
18 Clearance

Claims (2)

A spring force based on the bending deformation of the spring joint from a state in which a vine that is provided so as to be foldable via a spring joint fixed to the armor on both sides of the front portion is opened when wearing glasses. In the crane joint structure that can be pushed slightly outward further downward, the spring joint is generally U-shaped, with the fixed portion provided at one end fixed to the inside of the armor, and the bottom of the generally U-shaped armored The joint portion provided at the other end is placed inside the end of the end of the armor and connected to the temple, and the stopper end surface is projected by projecting the stopper to the outside of the joint portion, thereby contacting the end face of the temple. Furthermore, a crane joint structure characterized in that a slight gap is formed between the joint portion and the inner end of the end of the alloy. A spring joint is provided on both sides of the front part and is fixed to the armor to connect the crane. The spring joint is generally U-shaped and has a fixing part fixed to the end of the armor at one end. The other end is provided with a joint portion for connecting the temple, and the joint portion is formed with a stopper projecting outwardly against the end surface of the temple when opened, between the fixed portion and the joint portion. A spring joint for a spectacle frame, characterized in that a deformed portion having a reduced thickness is provided at the bottom of the substantially U shape.

Images