JP5076120B2 - Glasses frame resin vine - Google Patents

Description

  The present invention relates to a resin frame for an eyeglass frame which is connected to the eyeglass frame so that the eyeglass frame can be folded and can be slightly opened outwardly by being biased by a spring force. Here, the front portion is not necessarily limited to resin.

  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. 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. 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. That is, it is different from the assembling work for connecting ordinary vines. 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 attaching a vine via a common 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. On the other hand, the spring hinge is intended for metal vines and is not applied to resin vines.
"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 the present invention is intended for resin vines and has the same function as a conventional spring hinge with a simple structure without impairing the appearance of the eyeglass frame. A resin vine configured to be able to be provided is provided.

  The resin frame of the eyeglass frame according to the present invention can be folded by being connected to both sides of the front portion via a joint such as a hinge. That is, a hinge or the like is used as a connecting structure of the vine and is the same as a general glasses frame, but the present invention constitutes a portion that functions in the same manner as a spring hinge on the vine itself.

  By the way, the core made of resin has a core metal inserted in its central axis, and this core metal uses a super elastic material (for example, NT material), and protrudes from the resin resin portion at the tip of the core metal. The substrate is fixed, and one joint piece constituting the joint is brazed to the substrate. The joint piece may be brazed as an independent part, or may be integrally formed as a part of the substrate.

  The crane is attached to the front part by connecting the joint piece to another joint piece provided on the front part side. The substrate fixed to the tip end portion of the core metal is rigid and does not deform, but the portion of the core metal extending from the vine resin portion can be bent and deformed. Therefore, the vine connected to the front portion is folded through the joint and can be slightly pushed outward from the opened state by bending the cored bar. A cover member is attached to cover the cored bar portion and the substrate portion that bend and deform.

  The resin vine of the present invention uses a core metal as a superelastic material, extends the core metal from the end of the vine, fixes the substrate to the extended core metal tip, and connects the front portion via a joint piece provided on the substrate. It is attached so that it can be folded. That is, the mounting structure of the vine is the same as that of a general eyeglass frame, and the mounting work is easier than when mounting using a spring hinge.

  And since the core metal of a superelastic material can be bent and deformed, the vine can be pushed outward from the open state. Of course, if you let go of your hand, the mandrel can be restored straight and return to its original position, which functions in the same way as a conventional crane with a spring hinge. By using a super-elastic material as the core metal, the vine itself can be given a function of bending and deforming to the outside, so that it is easy to manufacture.

  On the other hand, a soft and deformable cover material is attached to the core metal portion extending from the vine resin portion, and the cover material is also attached to the substrate, so that the appearance of the vine is not impaired. That is, the appearance is formed in the same way as a general resin vine.

  FIG. 1 shows a resin spectacle frame provided with a vine 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 part 4. Are integrally molded. The nose pad portions 5 and 5 are formed as part of the rims 3 and 3 at the center of the front portion 1 and below the connecting portion 4.

  The said vines 2 and 2 are attached to the both sides of the front part 1, and can be folded now through a coupling. By the way, the crane 2 of the present invention functions in the same way as when using a spring hinge, and can be bent and deformed so that it can be slightly pushed outward from the open state when wearing glasses. It is said.

  However, in the present invention, the joint connecting the temples 2 does not function as such, but a part of the temple 2 is bent and deformed to be bent outward. In the case of a metal vine, the entire vine can bend and deform from the joint as a base point. However, the vine 2 of the present invention is made of resin, and a part of the front side is bent and deformed. . In other words, the resin portion is eliminated, and only a cored bar inserted through the central axis of the temple 2 is provided, and this portion is bent and deformed.

  Therefore, a super elastic material is used as the cored bar. For example, by using a memory alloy (NT material), it can be bent and deformed, and the temple 2 can be bent and pushed outward. FIG. 2 shows an embodiment showing the temple 2 of the present invention, where (a) shows the front side and (b) shows the inner side. The temple 2 is composed of a temple resin part 7 through which a core metal 11 is inserted, a bending deformable part 6 which can be bent and deformed, and a substrate 12 provided with a joint piece 10.

  The temple 2 is made of resin, and a cored bar is inserted through the central axis. However, the cored bar protrudes from the peaked resin part 7 and has a bending deformation part 6. A lavalon cover 8 is attached to the bending deformed portion 6 to cover the cored bar 11, and a substrate 12 is fixed to the tip of the cored bar 11 and a resin cover 9 is mounted. A joint piece 10 is attached to the substrate 12 and connected to the joint piece provided on the front portion 1 to attach the temple 2.

3A to 3D show a process for manufacturing the temple 2 of the present invention.
(a) is a case where the core metal 11 is inserted into the vine resin portion 7, and the core metal 11 extends from the tip of the vine resin portion 7.
(b) has shown the case where the lavalon cover 8 is attached to the said metal core 11. FIG. The lavalon cover 8 is soft and can be elastically deformed, and can be deformed together with the bending deformation of the core metal 11. Therefore, the member that covers the core metal 11 is not limited to the lavalon cover 8, but may be any material made of rubber or resin that is soft and excellent in elastic deformation. Is provided with a through hole.
(c) is a case where the substrate 12 is fixed to the tip of the core metal 11. The substrate 12 is composed of a rigid body such as a steel plate, and is riveted to the tip end portion of a core metal 11 made of a superelastic material, and a joint piece 10 is attached to the substrate 12 by brazing. The joint piece 10 is manufactured as a separate part and brazed to the substrate 12. However, the joint piece 10 may be integrally processed on a part of the substrate 12.
(d) has shown the case where the resin cover 9 is attached in order to coat | cover the board | substrate 12. FIG. This is the same as (b) in FIG. 2 and represents the inside of the temple 2. The resin cover 9 has a substantially U-shaped cross section and forms a groove in which the upper and lower edges of the substrate 12 are fitted. The resin cover 9 is fixed to the substrate 12 so as not to be removed by screws.

  FIG. 4 shows a case where the temple 2 is pushed outward. The chain double-dashed line is a state in which the temple 2 is open, but by pushing the temple 2 open, it can be bent outward as shown by a solid line. This is a bending caused by bending deformation of the bending deformation portion 6 of the core metal 11 made of a superelastic material.

The resin spectacles frame provided with the vine of this invention. 1 shows a crane according to the present invention, wherein (a) shows an outer surface and (b) shows an inner surface. The vine production process according to the present invention. The state of deflection of the vine according to the present invention. Conventional spring hinge.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front part 2 crane 3 rim 4 connection part 5 nose pad part 6 bending deformation part 7 crane resin part 8 lavalon cover 9 resin cover
10 Joint piece
11 Core
12 Board

Claims (1)

In the resin vine that can be folded slightly outwards under the action of the spring force from the state where the vine attached so that it can be folded via a joint on both sides of the front part, when applying glasses, The cored bar inserted into the central axis of the vine is made of a super elastic material, the cored bar is extended from the end of the vine resin part, and a rigid board such as a steel plate is fixed to the end of the cored bar. A joint piece connected to the joint piece provided on the side is provided, and the cored bar extending from the end of the vine resin part is a soft cover material that is elastically deformed along with the bending deformation of the cored bar, and the cored bar is inserted through the hole. was coated with the mounting isosamples inserted, also resin vine eyeglass frame on the substrate, wherein the coated by attaching a resin cover.

Images