JP5717435B2 - Eyeglass frames - Google Patents

Description

  The present invention relates to a spectacle frame, and more particularly to a resin spectacle frame that provides 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, there are many cases where the spectacle frame is greatly deformed when a large force is applied unintentionally when the spectacle frame is put on and off, or due to an accidental collision.

JP 2002-182162 A JP 2010-85896 A

  The problem to be solved by the present invention is a resin spectacle frame comprising temples connected by hinges to both ends of a front portion comprising a pair of lenses, and is softened by using a superelastic material. It is to provide a spectacle frame that provides a comfortable 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 unconscious power or accidents when it is removed.

An eyeglass frame according to claim 1 of the present invention includes a front portion including a pair of lenses and a temple that is rotatably connected by a hinge, and both ends of the front portion and the hinge are super elastic. A resin spectacle frame connected by a connecting member made of material, wherein the hinge includes a cylindrical portion having an insertion hole on one side for inserting the connecting member, and the temple is a core It includes gold, with the other side of the hinge is connected to the core metal, the total length of the tubular portion when opening the temple have adopted means positioned in contact with the metal core .

The spectacle frame according to claim 2 of the present invention is the spectacle frame according to claim 1, wherein the connecting member has a larger cross section at one end of the rod-shaped main portion than the cross section of the main portion. The head is embedded and connected to the end of the front part. The eyeglass frame according to claim 3 of the present invention is the eyeglass frame according to claim 2, wherein the connecting member has a flange part having a cross section larger than the cross section of the main part in the vicinity of the head part. We have adopted a Ru means.

According to a fourth aspect of the present invention, there is provided the spectacle frame according to any one of the first to third aspects, wherein the insertion hole has a large size in the vicinity of the entrance and receives an external force. Sometimes, a means is employed in which the connecting member is smoothly deformed and does not receive a large force locally. Furthermore, the eyeglass frame according to claim 5 of the present invention is the eyeglass frame according to any one of claims 1 to 4, wherein the front portion includes a lens frame on the back side of the front frame, and the lens is The means attached to the lens frame is adopted.

  By adopting the above-described means, the eyeglass frame of the present invention can bend both temples flexibly in a free direction at the connecting portion. Alternatively, both temples can be twisted at the connection. Therefore, a soft wearing feeling peculiar to the superelastic material can be obtained. In addition, the superelastic material used is limited to a small part connecting the front part and the temple, so that it is firmly attached to the user's head and can slide forward over time. There can be no glasses frame. 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. It is the schematic which shows the frame of the spectacles frame of FIG. It shows with the relationship between the connection member used with the spectacles frame of FIG. 1, a hinge, a metal core, and a temple, (1) is a schematic plan view, (2) is a schematic side view. 1 shows an enlarged view of the connecting portion of the eyeglass frame, wherein (1) shows a state in which the temple is opened and (2) shows a state in which the temple is closed. It is the schematic which shows the connection member, hinge, and metal core 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.

  Although the spectacle frame of the present invention is limited to the spectacle frame made of resin, it can be applied to the spectacle frame 10 having a special structure as shown in FIGS. 1 to 4 in addition to the normal full rim type and the half rim type. That is, the spectacle frame 10 includes a front portion 30 that is similar to a full rim type, and a pair of front frames 32 are connected by a bridge 31. However, the pair of lenses 40 is attached to a frame body 70 shown in FIG. 4, and the frame body 70 is attached to the back side of the front portion 30.

  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. The spectacle frame 10 includes a front portion 30 and a temple 50. The front unit 30 includes a pair of lenses 40 via a frame body 70. The temple 50 is connected to the front portion 30 by a hinge 60 so as to be rotatable. Then, both end portions 33 of the front portion 30 and the hinge 60 are connected by a connection member 20 made of a super elastic material. General methods such as screwing, caulking, and embedding can be appropriately employed for the connection between the front portion 30 and the connection member 20 and the connection between the hinge 60 and the connection member 20.

  FIG. 5 shows that one end of the connecting member 20 is embedded in the end portion 33 of the front portion 30, and that the temple 50 includes a cored bar 51, (1) is a schematic plan view, and (2). Is a schematic side view. And it shows that the connecting member 20 and the hinge 60 are connected, and the hinge 60 and the core metal 51 are connected. 6 shows an enlarged connection portion between the front portion 30 and the temple 50. (1) shows a state in which the temple is opened, and (2) shows a state in which the temple is closed. FIG. 7 shows a state where the connecting member 20, the hinge 60 and the cored bar 51 are assembled.

  The connecting member 20 includes a head portion 22 and a flange portion 23 having a cross section larger than the cross section of the main portion 21 at one end of the main portion 21 having a rod shape. A superelastic material is used as the material of the main portion 21. As the superelastic material, known materials such as a metal superelastic material described in Patent Document 1 and a resin superelastic material 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.

  Although the cross-sectional shape of the main part 21 may be any shape, the circular shape is preferable because the direction in which the external force is received is not limited and can be deformed in any direction. Although the raw material of the head 22 and the collar part 23 is not limited, For example, the metal-made head part 22 and the collar part 23 which were integrally formed with respect to the metal main part 21 can be caulked and attached. As shown in FIGS. 5 and 6, the front portion 30 and the connecting member 20 can be connected by embedding the head portion 22 in the end portion 33 of the resin-made front portion 30.

  As shown in FIG. 7, the hinge 60 includes a cylindrical portion 61 having an insertion hole 62 on one side, and the other end side of the main portion 21 of the connecting member 20 can be inserted into the insertion hole 62. After the insertion, the connecting member 20 and the hinge 60 can be connected by spot-welding the other end of the main portion 21. The cross-sectional shape and size of the main portion 21 are preferably constant, but the insertion hole 62 is preferably formed in the vicinity of the inlet. This is because when the connecting member 20 receives an external force, the connecting member 20 is smoothly deformed so as not to receive a large force locally.

  Further, the hinge 60 and the cored bar 51 can be selected from appropriate metal materials, and can be connected by a method such as fusion or screwing. As described above, as shown in FIGS. 1 to 3, the spectacle frame 10 has an appearance similar to that of a normal spectacle frame to the extent that the connection member 20 can be slightly seen when worn.

  The eyeglass frame 10 of the present invention can sufficiently exhibit the function of the superelastic material by being configured as described above, and can give a supple feeling. And a user can be given a soft wearing feeling. Further, since the spectacle frame 10 is used with a superelastic material limited to the connecting portion between the end portion 33 of the front portion 30 and the hinge 60, it can be firmly attached to the user's head and time passes. Even so, it will not slide forward. In addition, it is less likely to be deformed by unconscious power or accidents when it is removed.

  The spectacle frame 10 is shown with a special structure as an embodiment in order to show a wide range of applications of the present invention. The front portion 30 includes a frame body 70 as shown in FIG. 4 on the back side of the front frame 32. The pair of lenses 40 are attached to the lens frame 72. A nose pad 80 is also attached to the lens frame 72. Then, by attaching the central portion 71 to the bridge 31 of the front portion 30, the front portion 30 includes a pair of lenses 40.

  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 full rim type like the spectacle frame 10 or a half rim type. Since a high curve lens can be used, various designs can be applied.

DESCRIPTION OF SYMBOLS 10 Eyeglass frame 20 Connection member 21 Main part 22 Head 30 Front part 32 Front frame 33 End part 40 Lens 50 Temple 51 Core metal 60 Hinge 61 Cylindrical part 62 Insertion hole 72 Lens frame

Claims (5)

A front part provided with a pair of lenses and a temple that is rotatably connected by a hinge, and both ends of the front part and the hinge are connected by a connecting member made of a super elastic material. Glasses frame,
The hinge includes a cylindrical portion having an insertion hole on one side for inserting the connection member, the temple includes a cored bar, and the other side of the hinge is connected to the cored bar. , spectacle frame total length of the tubular portion is being located in contact with the metal core when opening the temple.   The connecting member includes a head having a cross section larger than that of the main portion at one end of the rod-shaped main portion, and the head is embedded and connected to the end portion of the front portion. The spectacle frame according to claim 1.   The spectacle frame according to claim 2, wherein the connection member includes a flange portion having a cross section larger than a cross section of the main portion in the vicinity of the head portion. The size of the insertion hole is formed so that the vicinity of the inlet is large, and when receiving an external force, the connecting member is smoothly deformed and does not receive a large local force. The spectacles frame of any one of Claims.   The spectacle frame according to any one of claims 1 to 4, wherein the front portion includes a lens frame on a back side of the front frame, and the lens is attached to the lens frame.