JP4116967B2 - Eyeglass frame vine connection structure - Google Patents

Description

  The present invention relates to a frame connecting structure for eyeglass frames in which the temples of the eyeglass frame are connected so as to be foldable and can be slightly opened outwardly when a spring force is applied from the opened state.

  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. 4 shows a 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. Therefore, this 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. 4 is attached, 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.
"Connecting structure" according to Japanese Patent Application Laid-Open No. 2001-290108

  As described above, the conventional vine connection structure has the above-described problems. The problems to be solved by the present invention are these problems, and provide a crane connection structure that is configured with a simple structure without impairing the appearance of the eyeglass frame.

  The eyeglass frame temple connecting structure according to the present invention is configured such that a temple is foldable via a hinge on a leaf spring accommodated in an armor brazed to both sides of the front portion. A space is formed inside the armor and a leaf spring is attached to the space, and the leaf spring can be bent and deformed within the space. Therefore, one hinge piece of the hinge is brazed to the tip of the leaf spring, and a crane is brazed to the other butterfly piece.

  The end of the armor and the end of the temple are in contact with each other without any gaps, and the appearance is a general eyeglass frame, but the leaf spring is bent and deformed within the space formed in the armor from the state where the temple is opened, It can be pushed slightly outward. Here, the base portion of the leaf spring is fitted into the bottom of the space and fixed by screwing or the like.

  In the crane connecting structure of the present invention, the crane is attached via a hinge attached to the tip of a leaf spring provided on the armor. Therefore, the vine is folded through the hinge, and on the other hand, it can be pushed outward by the bending deformation of the leaf spring, and the function as a spring hinge can be provided.

  The crane connecting structure of the present invention is a very simple structure in which the crane is connected via a hinge attached to the tip of a leaf spring, and its manufacture is simpler and costs less than a conventional spring hinge. Become cheap. On the other hand, since the leaf spring is housed in a space formed in the armature, the leaf spring does not surface outside, and is externally the same as a general crane connection structure, and the appearance of the spectacle frame is impaired. No, a slim glasses frame can be constructed.

  FIG. 1 shows a spectacle frame having a vine connection structure according to the present invention. In FIG. 1, reference numeral 1 denotes a front portion, and 2 denotes a temple. The front portion 1 has both rims 3 and 3 connected by a connecting member 4, and outer rims 3 and 3 are brazed to the end pieces 6 and 6. Is configured. In addition, nose pads 5 and 5 are attached to the inside of the rims 3 and 3 and below the connecting member 4. Further, the temples 2 and 2 are attached to the arms 6 and 6 so that they can be folded via hinges 7 and 7.

  Thus, the appearance of the eyeglass frame is not different from the conventional one, and it does not appear to have a spring hinge function. The crane connection structure of the present invention can have a function as a spring hinge without making the appearance different.

  2A and 2B are enlarged views when the crane 2 is connected to the armor 6 via the hinge 7, FIG. 2A is a plan view, and FIG. 2B is a view as viewed from an arrow A in FIG. The figure shows a state in which the crane 2 is open, but it can be folded via a hinge 7. The hinge 7 has butterfly pieces 8a and 8b connected by a shaft screw 9, one butterfly piece 8a is fixed to the armor side, and the other butterfly piece 8b is fixed to the crane side.

  Although the end surface 11 of the temple 2 is in contact with the front end surface 10 of the armor 6, it is not perpendicular to the temple inner surface 12 but is inclined. Accordingly, the temple 2 can be slightly pushed outward from the open state shown in the figure, and can be opened without interfering with the front end surface 10 of the armor 6 at this time.

  3 (a) and 3 (b) are examples showing a crane connecting structure, and show a cross section of the armor 6. An inner space 13 is formed in the armor 6, and a leaf spring 14 is attached to the space 13. The leaf spring 14 has a base 15 screwed so that the tip 16 can be bent and deformed, and the one side hinge piece 8a of the hinge 7 is brazed to the tip 16.

  The tip 16 of the leaf spring 14 can be bent within the space 13 formed inside the armor 6, and therefore if the outward force is applied to the temple 2, the leaf spring 14 is bent and deformed. The temple 2 turns around the screw 17 of the base portion 15 and is pushed outward. (b) shows a state in which the leaf spring 14 is bent and deformed and the temple 2 is pushed outward.

  A spring force is applied to the temple 2 by a leaf spring 14, and if the eyeglasses are removed from the face or the hand is released from the pushed-down temple 2, the original position (a) can be restored. . And the temple 2 can be folded from the state of (a).

The top view of a spectacles frame. A crane that can be attached to the end of the armor via a hinge. It is an Example which shows the vine connection structure which concerns on this invention, (a) is the state which the vine opened, (b) is the state which pushed the vine outward. Conventional spring hinge.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front part 2 Crane 3 Rim 4 Connection member 5 Nose pad 6 Yoroi 7 Hinge 8 Butterfly piece 9 Axial screw
10 Tip surface
11 End face
12 Inside
13 space
14 Leaf spring
15 base
16 Tip
17 screw

Claims (1)

A crane that can be folded through hinges on the armor provided on both sides of the front part, so that it can be pushed further outwards under the action of spring force from the open state when wearing glasses. In the connection structure, like a general eyeglass frame, the temple end touches the end of the armor without any step or gap, and a space is formed inside the armor and the leaf spring is accommodated so that the leaf spring does not surface outside. Then, by fixing the base portion of the leaf spring with a screw, the distal end side of the leaf spring can be bent and deformed within the space, and a hinge piece on one side of the hinge is fixed to the tip of the leaf spring, and the other side the butterfly piece was fixed on vines, characterized in that is further inclined armor tip surface and vine end face one another abutting so as not to interfere with the armor tip surface when pushed open the vines against vine inner surface vines Quite concrete.

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