JP5557728B2 - Eyeglass frames - Google Patents

Description

  The present invention relates to a spectacle frame, and more particularly, to a spectacle frame made of metal or resin that can provide a soft wearing feeling using a superelastic material such as a shape memory alloy.

  A general spectacle frame includes temples connected by hinges to both ends of a front portion including a pair of lenses. In the full rim type eyeglass frame with an annular rim at the front part and the half rim type eyeglass frame with a semi-annular rim, the left and right rims are connected by a bridge at the center, and the end of both rims is provided with an armature, A temple is connected to each armor via a hinge.

  In recent years, in order to obtain a soft wearing feeling, a super elastic material is used as a material of the spectacle frame. For example, Patent Document 1 describes an invention in which Ni, Ti, Co ternary superelastic materials and Ni, Ti binary superelastic materials are used for bridges and temples. Studies on shape memory heat treatment are described. Patent Document 2 describes an invention relating to a synthetic resin material for a front rim, and describes the use of a polyamide-based superelastic resin.

  "Superelasticity" is used as a term indicating the property of deforming with a large strain when a force is applied and returning to the original when the force is removed. A normal metal cannot recover even with a strain of 0.5% or less. Therefore, in this specification, a material in which a strain of 1.0% or more is completely recovered is referred to as a “superelastic material”. Includes a metal material and a resin material.

  A spectacle frame using a super elastic material has elasticity that can be bent greatly as compared with a conventional material, and can give a user a “supple feeling”. And a soft wearing feeling can be given. However, in the conventional spectacle frame, since the super elastic material is used for the entire material of the bridge and the temple, there is a problem that it is difficult to attach it firmly to the user's head. That is, since the material is deformed supplely, the worn spectacle frame slides forward with time. In addition, it is not uncommon for a large force to be applied unintentionally when the spectacle frame is detached or the spectacle frame is greatly deformed due to an accidental collision.

JP 2002-182162 A JP 2010-85896 A

  A problem to be solved by the present invention is a spectacle frame made of metal or resin having temples connected by hinges to both ends of a front portion having a pair of lenses, and uses a super elastic material. Accordingly, it is an object to provide a spectacle frame that provides a soft wearing feeling, is firmly attached to the user's head, and does not slide forward over time. It is another object of the present invention to provide a spectacle frame that is less likely to be deformed by an unconscious force or accident when it is removed.

An eyeglass frame according to claim 1 of the present invention includes a front portion that does not include a lens, a pair of temples that are connected to both ends of the front portion via hinges, and a rear surface of the front portion that includes a pair of lenses. A frame that is attached to the side, wherein the front part includes a main part to which the frame is attached and a bridge, and the end part. The main part and each end part bets have adopted the means are connected by superelastic material made of the connection member.

  The eyeglass frame according to claim 2 of the present invention employs a means in which both ends of the connection member are connected to the front portion by fusion in the eyeglass frame according to claim 1. According to a third aspect of the present invention, in the spectacle frame according to the first or second aspect, the hinge is formed of a super elastic material.

  According to a fourth aspect of the present invention, in the spectacle frame according to the third aspect of the present invention, means is adopted in which both ends of the hinge are connected to the front portion and the temple by fusion. Yes. According to a fifth aspect of the present invention, in the spectacle frame according to any one of the first to fourth aspects of the present invention, the lens mounting method of the frame body is a nyroll type. Yes. Furthermore, the eyeglass frame according to claim 6 of the present invention employs means in which the front part and the connection member are made of metal in the eyeglass frame according to any one of claims 1 to 5. .

  The eyeglass frame of the present invention can be bent flexibly in a predetermined direction in the connecting member by adopting the above means. Alternatively, the front part can be twisted in the connection member. Therefore, a soft wearing feeling peculiar to the superelastic material can be obtained. In addition, since the superelastic material used is limited to a very small part of the front part, it is a spectacle frame that is firmly attached to the user's head and does not slide forward over time. be able to. Moreover, it can be set as the spectacles frame which hardly deform | transforms by the unconscious force and accident at the time of hanging.

It is a schematic plan view which shows an example of the spectacles frame of this invention. It is a schematic front view of the spectacles frame of FIG. It is a schematic side view of the spectacles frame of FIG. FIG. 2 is a partial view including a connection member and a hinge of the eyeglass frame of FIG. 1, (a) shows an outline view, (b) shows a partial cross-sectional view, and (c) shows an AA arrow view of (a). A cross-sectional view is shown. It is the schematic which shows the frame of the spectacles frame of FIG. It is a schematic perspective view which shows the relationship between the front part of the spectacles frame of FIG. 1, and a frame.

  FIG. 1 is a schematic plan view of the spectacle frame 10, FIG. 2 is a schematic front view of the spectacle frame 10, and FIG. 3 is a schematic side view of the spectacle frame 10. 1 to 3, the spectacle frame 10 is made of metal, but it may be made of resin.

  The spectacle frame 10 includes a front portion 30, a pair of temples 50 connected to both end portions 33 of the front portion 30 via a hinge 60, and a pair of lenses 40, and a frame attached to the back side of the front portion 30. 70. The temple 50 has a modern 51.

  As shown in FIG. 2, the front portion 30 includes a main portion 32 including a central bridge 31 and both end portions 33, and the whole has an appearance similar to a half rim type. And the main part 32 and the edge part 33 are connected by the connection member 20 made from a superelastic material.

  As shown in FIG. 5, the frame 70 has a pair of lens frames 72 connected by a central portion 71. A nose pad 80 is attached to each lens frame 72. A method for attaching the lens 40 to each lens frame 72 is not particularly limited, but it is preferable to use a nyroll type. The nyroll type is a method of attaching using a high tension yarn, and is a method adopted in a normal half rim type.

  By adopting the nyroll type, the lens 40 can be easily attached to the lens frame 72. Further, by using the lens frame 72 separately from the main portion 32, it is possible to shorten the joint portion between the lens 40 and the lens frame 72, and the relative relationship between the lens 40 and the lens frame 72 at the joint portion. For precision machining, the amount of machining work can be reduced.

  4A and 4B are partial views including the connecting member 20 and the hinge 60 of the spectacle frame 10, wherein FIG. 4A is an outline view, FIG. 4B is a partial cross-sectional view, and FIG. 4C is A in FIG. -Shows arrow A view. The connection member 20 made of a superelastic material has a rod shape or a plate shape, and connects the main portion 32 and the end portion 33 of the front portion 30. The connecting member 20 may have any cross-sectional shape, but if the connecting member 20 is rectangular, it can be deformed in the same direction as the rotation of the temple 50, and can be deformed when the two temples 50 are twisted. It becomes possible to do.

  For the connection member 20, a metal superelastic material as described in Patent Document 1 or a resin superelastic material as described in Patent Document 2 can be used. In any case, a material exhibiting superelasticity at a normal use temperature is selected. For example, a superelastic alloy having a transformation temperature of -20 to 0 ° C. can be used.

  When the front part 30 is made of metal, it is preferable to use a metal connecting member 20, and when the front part 30 is made of resin, it is preferable to use the resin connecting member 20, but not necessarily It is not limited. In any case, for connection between the main portion 32 and the connection member 20, and connection between the connection member 20 and the end portion 33, means such as fitting and screwing can be employed. It is particularly preferable that both ends a and a of the connection member 20 are fused at pinpoints and deformed over almost the entire connection member 20.

  The spectacle frame 10 of the present invention connects the main portion 32 and the end portion 33 of the front portion 30 by using the connecting member 20 made of a superelastic material, so that the front portion 30 is pliable in a predetermined direction in the connecting member 20. Can be bent. Alternatively, the front part 30 can be twisted in the connecting member 20. Therefore, a soft wearing feeling peculiar to the superelastic material can be obtained. Further, since the use of the super elastic material is limited to a very small part of the front portion 30, the super elastic material is firmly attached to the user's head and does not slide forward even if time passes. In addition, it is less likely to be deformed by unconscious power or accidents when it is removed.

  As shown in FIG. 4, the above effect can be further improved by forming the hinge 60 from a superelastic material. That is, when the front part 30 is made of metal, the hinge 60 is preferably made of a metal superelastic material. When the front part 30 is made of resin, the hinge 60 is preferably made of a resin superelastic material. However, the present invention is not necessarily limited to this.

  In any case, means such as fitting and screwing can be employed for connection between the hinge 60 and the end portion 33 or the temple 50. However, it is particularly preferable to use fusion. As in the case of the connecting member 20, the cross-sectional shape of both ends is made rectangular and longer than usual to form a deformed portion, and both ends b and b of the hinge 60 are fused at a pinpoint, so that the deformation range can be widened. preferable.

  A specific example of attaching the frame 70 to the front portion 30 is shown in FIG. The front portion 30 has a recess 35 formed on the back side of the bridge 31. Further, the frame body 70 has a convex portion 75 formed at the central portion 71 so as to correspond to the concave portion 35. Then, the convex portion 75 can be inserted into the concave portion 35 and fixed by the screw 79.

  When the frame body 70 is used in this way, the joint portion between the lens 40 and the lens frame 72 is shortened, the amount of precision processing between the lens 40 and the lens frame 72 is reduced, and the lens 40 can be easily attached. can do. Further, it is possible to make the appearance look like a half rim type like the spectacle frame 10 or a full rim type. Since a high curve lens can be used, various designs can be applied.

DESCRIPTION OF SYMBOLS 10 Eyeglass frame 20 Connection member 30 Front part 33 End part 40 Lens 50 Temple 60 Hinge 70 Frame

Claims (6)

A front portion not provided with a lens , and a pair of temples connected to both ends of the front portion via hinges;
A frame comprising a pair of lenses and a frame attached to the back side of the front part,
The front part includes a main part provided with a bridge to which the frame body is attached, and the end part, and the main part and each end part are connected by a connection member made of a super elastic material. Features eyeglass frame.   The spectacle frame according to claim 1, wherein both ends of the connecting member are connected to the front portion by fusion.   The spectacle frame according to claim 1 or 2, wherein the hinge is made of a super elastic material.   The eyeglass frame according to claim 3, wherein both ends of the hinge are connected to the front portion and the temple by fusion.   The spectacle frame according to any one of claims 1 to 4, wherein a lens is attached to the frame by a nyroll method.   The spectacle frame according to claim 1, wherein the front portion and the connection member are made of metal.