JP5406641B2 - Eyeglass frames - Google Patents

Description

  The present invention relates to a spectacle frame, and more particularly to a spectacle frame that can provide a soft wearing feeling using a shape memory alloy or a shape memory resin.

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

  Further, in a two-point spectacle frame that does not include a rim, the left and right lenses are directly connected by a bridge at the center, and an armor is directly provided at the ends of both lenses. A temple is connected to each armor via a hinge.

  In recent years, a shape memory material has been used as a material for a spectacle frame in order to obtain a soft wearing feeling. 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 related to a resin-made modern to be attached to a temple. A hard resin such as a fiber-based thermoplastic resin is used for a portion where a metal temple is embedded, and the ear is used. It is described that a polyurethane-based shape memory resin is used for the contacting portion.

  A spectacle frame using a shape memory material has superelasticity that can be greatly bent as compared with a conventional material, and can give the user a “supple feeling”. And a soft wearing feeling can be given. However, since the conventional spectacle frame simply uses a shape memory material as the material of the bridge or 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.

JP 2002-182162 A JP 2003-43426 A

  The problem to be solved by the present invention is a spectacle frame comprising temples connected by hinges on both sides of a front part having a pair of lenses, and a soft wearing feeling is obtained by using a shape memory material. And a spectacle frame that is firmly attached to the user's head and does not slide forward over time.

A spectacle frame according to claim 1 of the present invention is a spectacle frame including temples connected to both sides of a front portion including a pair of lenses by a hinge, wherein the temple includes a front member, a rear member, and it consists of a connection member that connects the front member and rear member, wherein the connecting member has a shape made of memory material exhibiting superelastic in normal use temperature, the front member and the rear member, facing each other Gripping portions fixed to the inner side surfaces in the vicinity of the respective connection ends, and both the gripping portions are spaced apart from the fixing positions of the connection members, and both ends thereof are inserted through the connection members. A means having an open insertion hole is employed.

Further, the eyeglass frame according to claim 2 of the present invention, there is provided a spectacle frame of claim 1, the cross-sectional area before Ki挿 hole is adopted means that gradually enlarged toward the connection end doing. A spectacle frame according to a third aspect of the present invention is the spectacle frame according to the first or second aspect , wherein the connecting member has a circular cross section.

  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, it is possible to obtain a soft wearing feeling unique to the shape memory material. In addition, since the shape memory material used is limited to a part of the temple, it can be a spectacle frame that is firmly attached to the user's head and does not slide forward even if time passes. .

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. 1 shows an enlarged view of a connecting portion of a temple used in the spectacle frame of FIG. FIG. The front member of the temple used with the spectacles frame of FIG. 1 is shown, (1) is a schematic plan view, (2) is an AA arrow schematic side view, (3) is a BB arrow schematic side view, 4) is a schematic cross-sectional view taken along the line CC. The rear member of the temple used with the spectacles frame of FIG. 1 is shown, (1) is a schematic plan view, (2) is an AA arrow schematic side view, (3) is a BB arrow schematic side view. . FIG. 1 shows a temple connecting member used in the eyeglass frame of FIG. 1, (1) is a schematic plan view, (2) is a schematic side view taken along the line AA, (3) is a schematic cross-sectional view taken along the line BB, 4) is a schematic cross-sectional view taken along the line CC.

  FIG. 1 shows a metal half rim type spectacle frame 10 which is an example of an embodiment of the present invention. FIG. 2 is a front view of the spectacle frame 10, and FIG. 3 is a side view of the spectacle frame 10.

  The spectacle frame 10 includes rims 30, 30 that hold a pair of lenses 40, 40 at a front portion, and both rims 30, 30 are integrally fixed by a central bridge 35. On the outside of both rims 30 and 30, armatures 31 and 31 are provided, and the temples 20 and 20 are rotatably connected via hinges 32 and 32, respectively. Also, moderns 25 and 25 are attached to the ends of the temples 20 and 20. The eyeglass frame 10 of the present invention is characterized by the temple 20, and conventionally known techniques can be used for the other parts.

  4 is an enlarged view of the temple 20 of the spectacle frame 10, wherein (1) is a plan view, (2) is a side view taken along the line AA, and (3) is a side view taken along the line BB. In the eyeglass frame 10 of the present invention, the temple 20 includes a front member 50, a rear member 60, and a connection member 70 made of a shape memory material that connects the front member 50 and the rear member 60.

  FIG. 5 shows the front member 50 of the temple 20, wherein (1) is a plan view, (2) is a side view taken along the line AA, (3) is a side view taken along the line BB, and (4) is C- It is C arrow sectional drawing. The front member 50 includes a grip portion 51 that slidably grips the connection member 70 on an inner side surface (a side surface facing the face when worn), and a fixing portion 52 that fixes the connection member 70.

  The grip 51 is provided in the vicinity of the connection end 59 where the front member 50 faces the rear member 60, and includes an insertion hole 53 through which the connection member 70 is inserted. The cross-sectional area of the insertion hole 53 is gradually enlarged toward the connection end 59 on the connection end 59 side. The fixing portion 52 includes an insertion hole 54 on an extension line of the insertion hole 53. Therefore, the connection member 70 can be inserted into the insertion hole 53 from the connection end 59 side and subsequently inserted into the insertion hole 54. The connection member 70 can be brazed and fixed to the front member 50 in the vicinity of the entrance of the insertion hole 54.

  6 shows the rear member 60 of the temple 20, wherein (1) is a plan view, (2) is a side view taken along the line AA, and (3) is a side view taken along the line BB. The rear member 60 includes a grip portion 61 that slidably grips the connection member 70 on the inner side surface (the side surface facing the face when worn). In addition, a screw hole 65 and recesses 66 and 67 are provided to fix the connection member 70.

  The grip portion 61 includes an insertion hole 63 through which the rear member 60 is provided in the vicinity of the connection end 69 facing the front member 50 and through which the connection member 70 is inserted. The cross-sectional area of the insertion hole 63 gradually increases from the connection end 69 toward the connection end 69. Further, the screw hole 65 is located on an extension line of the insertion hole 63.

  7 shows the connection member 70 of the temple 20, wherein (1) is a plan view, (2) is a side view taken along the line AA, (3) is a cross-sectional view taken along the line BB, and (4) is C- It is C arrow sectional drawing. The connection member 70 includes a fixing portion 72 having a plate-like cross section on one end side of the main portion 71 having a circular cross section. A fixing hole 75 is provided in the fixing portion 72.

  Therefore, the connection member 70 is inserted into the insertion hole 63 of the rear member 60, and the screw hole 65 of the rear member 60 and the fixing hole 75 of the connection member 70 are made to coincide with each other, as shown in FIGS. , And can be fixed integrally with the screw 81 via the push member 80. The pressing member 80 can be fixed at a predetermined position by the concave portions 66 and 67 of the rear member 60.

  In the eyeglass frame 10 of the present invention, the front member 50 and the rear member 60 of the temple 20 are connected by a connection member 70 formed of a shape memory material. That is, only a part of the temple 20 is made of a shape memory material. This part is a part near the part connected with the armor 31 by the hinge 32, and is between the grip part 51 and the grip part 61, and is a distance of about 10 to 20 mm.

  As the shape memory material, the shape memory alloy described in Patent Document 1 or the shape memory resin described in Patent Document 2 can be used. In any case, a material that exhibits superelasticity at a normal use temperature is selected. For example, a shape memory alloy having a transformation temperature of around -20 to 0 ° C can be used.

  The cross-sectional shape of the connecting member 70 may be any shape, but the circular shape is preferred because the direction in which the external force is received is not limited and can be deformed in any direction.

  The connection member 70 needs to be careful not to concentrate the stress on one point with respect to the external force, and it is preferable that the stress is dispersed over a predetermined length. For this reason, in the grip 51, the cross-sectional area of the insertion hole 53 is gradually and smoothly enlarged toward the connection end 59 on the connection end 59 side. Therefore, the connection member 70 is smoothly bent along the wall surface of the insertion hole 53 when receiving an external force, and the stress can be dispersed. The same applies to the grip portion 61.

By dispersing the stress, the function of the shape memory material can be sufficiently exerted, and a supple feeling can be given. And a user can be given a soft wearing feeling . In the spectacle frame 10 of the present invention, in order to shape memory material is limited to a part of the temple 20, firmly can be mounted on the head of use for users, it is slipping Previous over time Absent.

  In the eyeglass frame 10, since it is shown as an example made of metal, the fixing method of both the members 50, 60 and the connecting member 70 is shown by brazing and screwing, but depending on the properties and shapes of these materials It can also be fused or crimped.

DESCRIPTION OF SYMBOLS 10 Eyeglass frame 20 Temple 25 Modern 30 Rim 31 Yoroi 32 Hinge 35 Bridge 40 Lens 50 Front member 51, 61 Holding part 52, 72 Fixing part 53, 54, 63 Insertion hole 59, 69 Connection end 60 Rear member 65 Screw hole 66, 67 Concave portion 70 Connecting member 71 Main portion 75 Fixing hole 80 Pushing member 81 Screw

Claims (3)

A spectacle frame comprising temples connected with hinges on both sides of a front part comprising a pair of lenses,
The temple front member, formed of a connection member that connects a rear member, and the front member and rear member,
The connecting member is made of a shape memory material that exhibits superelasticity at normal operating temperatures;
The front member and the rear member each include a gripping portion fixed to an inner surface in the vicinity of each connection end facing each other.
The both gripping portions are spaced apart from the fixing position of the connecting member, and are provided with insertion holes open at both ends for inserting the connecting member.   The spectacle frame according to claim 1, wherein a cross-sectional area of the insertion hole gradually increases toward the connection end.   The spectacle frame according to claim 1 or 2, wherein the connecting member has a circular cross section.

Images