JP2012177760A - Hinge for spectacles and spectacles using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge for spectacles whose structure is simple, and which does not fail even if it is small, and spectacles by which soft wearability is obtained, which are tightly worn to the head of a user, and which do not slip down in front.SOLUTION: A hinge for spectacles includes: a first frame 20 to be connected to a front part; a second frame 30 to be connected to a temple; and a shaft member 40 which connects the two frames, in which the first frame 20 and/or the second frame 30 includes elastic parts deformably formed by a superelastic material. Both of the first frame 20 and the second frame 30 include the elastic parts, and the two elastic parts are formed in parts of an annular body of the same outer diameter respectively.

Description

  The present invention relates to a hinge for spectacles, and more particularly, to a hinge for spectacles that can soften the feeling of wearing glasses and can securely wear the glasses on a user's head. The present invention also relates to eyeglasses using this eyeglass hinge.

  Two techniques can be cited as main methods for softening the wearing feeling of the glasses. One method is a technique using a superelastic material. 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.

  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.

  "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.

  Another method for softening the wearing feeling of the glasses is a technique using a spring hinge, which is a hinge that gives a clamping force to the temple by an elastic force of a spring or the like built in the hinge. All the general spectacles are provided with temples connected by hinges at both ends of a front part provided with a pair of lenses. In a full rim type eyeglass frame with an annular rim at the front part and a half rim type eyeglass frame with a semi-annular rim, both ends of the front part are called `` wi '', so the hinge is Will be connected. In the case of edgeless glasses called two-point, the hinge connects a temple and a temple that are directly attached to the lens.

  The eyeglasses are adjusted so that the distance between the temples fits the user's head with both temples open. When using a normal hinge, it is adjusted so that the head is pinched a little by the elasticity of the temple, but it cannot be adjusted enough with the elasticity of the temple alone, or readjustment according to changes over time Is necessary. Therefore, by using a spring hinge, an appropriate clamping force can be obtained, and a stable clamping force can be applied over a long period of time.

  For example, Patent Document 3 describes a hinge for spectacles in which a special washer having elasticity is incorporated between an outer hinge body and an intermediate hinge body constituting a hinge. This washer has a ring-shaped part cut out, and the engaging claws at both ends are engaged with the outer hinge body and the middle hinge body. Accordingly, when a force is further applied in the direction in which the temple is opened in a state where the rotation of the temple is maximized, the temple can be further expanded by the bending of the washer. However, since this hinge has two washers in addition to the outer hinge body and the middle hinge body, the number of parts is increased and the whole is complicated, so that it is easy to cause a failure, or to make it robust so as not to break down. The problem is that the entire hinge must be enlarged.

JP 2002-182162 A JP 2010-85896 A Japanese Patent Laid-Open No. 11-258551

  A problem to be solved by the present invention is a glasses hinge for connecting a front part having a pair of lenses and a temple, and provides a hinge for glasses that has a simple structure and does not break down even if it is small. That is. It is another object of the present invention to provide spectacles that give a soft wearing feeling to the user of the spectacles and that are firmly attached to the user's head and that do not slide forward even after a lapse of time. It is another object of the present invention to provide eyeglasses that are less likely to be deformed due to unconscious power or accidents when being removed.

  A spectacles hinge according to claim 1 of the present invention is a spectacles hinge that rotatably connects a front part and a temple, and includes a first piece connected to the front part and a first piece connected to the temple. Means including two pieces and a shaft member connecting the two pieces, wherein the first piece and / or the second piece includes an elastic portion formed to be deformable by a superelastic material. Is adopted.

  Moreover, the spectacles hinge which concerns on Claim 2 of this invention employ | adopts the means by which the said elastic part is formed in the shape which makes a part of annular body in the hinge for spectacles of Claim 1. . The eyeglass hinge according to claim 3 of the present invention is the eyeglass hinge according to claim 2, wherein the first piece and the second piece both include the elastic portion, and the two elastic portions. However, the means currently formed in a part of annular body provided with the respectively same outer diameter is employ | adopted. The eyeglass hinge according to claim 4 of the present invention is the eyeglass hinge according to any one of claims 1 to 3, wherein the temple is made of resin, and the second frame is the temple. The means formed integrally with the core metal is adopted.

  Furthermore, the eyeglasses according to claim 5 of the present invention employs means using the eyeglass hinge according to any one of claims 1 to 4.

  The eyeglass hinge of the present invention can exhibit a very excellent spring hinge function by employing the above-described means. In other words, since the number of component parts is small, it is possible to provide a hinge that is unlikely to cause a failure. In addition, a user wearing spectacles using this hinge can obtain a soft wearing feeling peculiar to a superelastic material. In addition, since the superelastic material used is limited to a part of the glasses, the superelastic material is firmly attached to the user's head and does not slide forward even if time passes. Moreover, it can be set as the spectacles which are not deform | transformed easily by the unconscious force and accident in hanging.

An example of the hinge for spectacles of this invention is shown, (a) is a schematic plan view, (b) is a schematic front view, (c) is a partial sectional view by the AA arrow of (b). The 1st top in the hinge for spectacles of FIG. 1 is shown, (a) is a schematic plan view, (b) is a schematic front view, (c) is a partial sectional view in the BB arrow view of (b). . The 2nd top in the hinge for glasses of Drawing 1 is shown, (a) is a schematic plan view, (b) is a schematic front view, (c) is a partial sectional view in CC arrow of (a), d) is a DD arrow view of (a). It is explanatory drawing which shows the effect | action function of the hinge for glasses of FIG. 1, (a) shows the force which acts on the whole, (b) is the force which acts on a 2nd top, (c) is the 1st top. Indicates the acting force. It is a schematic plan view which shows an example of the spectacles using the hinge for spectacles of FIG. It is a schematic front view which shows the spectacles of FIG. It is a schematic side view which shows the spectacles of FIG. The core metal used with the temple of FIG. 5 is shown, (a) is a schematic plan view, (b) shows a schematic side view.

  An example of the hinge for spectacles of this invention is shown in FIGS. FIG. 1 shows a state where the first piece 20, the second piece 30 and the shaft member 40 constituting the hinge 10 for glasses are assembled, and shows a state when the temple is fully opened. The first frame 20 is a frame connected to the front part of the glasses, and the second frame 30 is a frame connected to the temples of the glasses. Here, the first frame 20 is the outer frame, and the second frame 30 is the middle frame, but it is also possible to reverse these.

  The first piece 20 includes a pair of central portions 21a and 21b having a small annular shape, a pair of outer peripheral portions 22a and 22b forming a part of a larger annular body, and a connection portion 23 connected to the front portion. I have. The pair of central portions 21a and 21b and the pair of outer peripheral portions 22a and 22b form outer frames and are formed so as to sandwich the second frame 30 serving as an intermediate frame. One end sides of the outer peripheral portions 22 a and 22 b are connected to the central portions 21 a and 21 b, respectively, and the other end sides are connected to the connecting portion 23.

  In the pair of outer peripheral portions 22a and 22b, a step is provided on the other end side of the surfaces facing each other, and stoppers 26a and 26b are formed. These limit the mutual rotation of the two frames together with the stoppers 36a, 36b formed on the second frame 30. The central portion 21a is provided with a shaft hole 24a into which a bolt forming the shaft member 40 can be inserted, and the central portion 21b is provided with a screw hole 24b to be screwed with the bolt.

  In the outer peripheral portions 22a and 22b forming a part of the annular body, the range indicated by the arrow mm in FIG. 2A is the elastic portions 25a and 25b, and is formed to be deformable by a superelastic material. The superelastic material is the material defined above and is preferably used for the entire first piece 20. The function of the elastic portions 25a and 25b when an external force is applied to the first piece 20 will be described later.

  The second top 30 includes a central portion 31 having a small annular shape, an outer peripheral portion 32 forming a part of a larger annular body, and a connecting portion 33 connected to the temple. The central portion 31 and the outer peripheral portion 32 form a middle frame, and are formed so as to be sandwiched by the first frame 20 as an outer frame. One end side of the outer peripheral portion 32 is connected to the central portion 31, and the other end side is connected to the connecting portion 33.

  The outer diameter of the outer peripheral portion 32 forming a part of the annular body is preferably formed to the same outer diameter as the outer peripheral portions 22a and 22b of the first top 20. Thereby, the elastic part 35 is formed in a part of annular body provided with the same outer diameter as the elastic parts 25a and 25b of the first piece 20. And by setting it as such a shape, the hinge 10 for glasses will show the external appearance similar to a normal hinge.

  A step is provided on the outer peripheral portion 32 so as to face the stoppers 26a and 26b of the first piece 20, and stoppers 36a and 36b are formed. These stoppers 26a, 26b, 36a, 36b restrict the mutual rotation of the two frames. The central portion 31 is provided with a shaft hole 34 for inserting a bolt forming the shaft member 40. In the outer peripheral portion 32, a range indicated by an arrow nn in FIG. 3A is an elastic portion 35, and is formed to be deformable by a superelastic material. The superelastic material is the material defined above and is preferably used for the entire second top 30.

  The function of the eyeglass hinge 10 will be described with reference to FIG. The first piece 20 and the second piece 30 rotate relative to each other about the shaft member 40. When the temple is fully opened, the stoppers 26a and 26b of the first frame 20 and the stoppers 36a and 36b of the second frame 30 are in contact with each other. From this state, when a force further acts in the direction of opening the temple, a force as indicated by an arrow X in FIG. 4A acts on the contact portion as a fulcrum.

  At this time, in the second piece 30 shown in FIG. 4B, the elastic portion 35 forming a part of the annular body bends in the contracting and closing direction, and at the same time, the first piece 30 is interposed via the shaft member 40. A force as indicated by an arrow Y is applied to the central portions 21a and 21b of the top 20. In the first piece 20 shown in FIG. 4C, the force indicated by the arrow Y acts as the force indicated by the arrow Z on one end side of the outer peripheral portions 25a and 25b. It will bend in the direction which 25b expands.

  These bends in the first piece 20 and the second piece 30 can be greatly deformed by using a superelastic material for the elastic portions 25a, 25b, and 35. Accordingly, the eyeglass hinge 10 of the present invention has a function equivalent to or better than that of the conventional spring hinge, and can be a hinge that has a simple structure and is unlikely to cause a failure.

  In the eyeglass hinge 10, the elastic portions 25 a, 25 b, and 35 are all formed in a shape that forms part of an annular body and have an appearance similar to a normal hinge, but other shapes are used. For example, a U-shaped elastic part or an elliptical elastic part may be used.

  The Example of the spectacles using the hinge 10 for spectacles of this invention is shown in FIGS. 5 is a schematic plan view of the glasses 50, FIG. 6 is a schematic front view of the glasses 50, and FIG. 7 is a schematic side view of the glasses 50. In the eyeglasses 50, the front part 60 and the temple 70 are connected to each other by the eyeglass hinge 10 so as to be rotatable with respect to each other. The front portion 60 includes a main portion 61 to which the eyeglass hinge 10 is attached to the end portion 62 and a frame body 65 to be attached to the back side of the main portion 61, and the lens 80 is attached to the frame body 65.

  Thus, when the front part 60 is comprised by the main part 61 and the frame 65, there exist the following two advantages. First, since the structure of the main portion 61 is not limited by the attachment of the lens 80, the width of the design in the front portion 60 can be increased. For example, by providing an elastic portion 63 as shown in FIG. 5 in a part of the main portion 61, a new appearance can be exhibited and a softer wearing feeling can be given. In addition, the frame 65 to which the lens 80 is attached can employ an optimum attachment method for the lens 80. That is, it is possible to attach the lens 80 regardless of the shape of the main portion 61, and even if the lens 80 has a high curve, it can be easily attached in an optimal state.

  The material constituting the front portion 60 and the temple can be made of metal or resin. Further, the spectacles 50 of the present invention are illustrated as a special case in which the front portion 60 is provided with the frame body 65. However, the spectacles 50 of the present invention can also be used for full rim type or half rim type spectacles or two-point spectacles, which are normal types. can do.

  The temple 70 of the glasses 50 is made of resin, and a metal cored bar 71 is used inside to increase the strength. As shown in FIG. 8, one end of the cored bar 71 is formed integrally with the second piece 30 of the hinge 10 for glasses. FIG. 8A is a plan view and FIG. 8B is a side view.

  The eyeglasses 50 using the eyeglass hinge 10 of the present invention can be similar in appearance to those using a conventional hinge. The user wearing the spectacles 50 using the spectacle hinge 10 can obtain a soft wearing feeling peculiar to the superelastic material. Further, since the super elastic material used is limited to a part of the glasses 50, the super elastic material is firmly attached to the user's head and does not slide forward even if time passes. Moreover, it can be set as the spectacles which are not deform | transformed easily by the unconscious force and accident in hanging.

DESCRIPTION OF SYMBOLS 10 Hinge for glasses 20 1st top 25a Elastic part 25b Elastic part 30 2nd top 35 Elastic part 40 Shaft member 50 Glasses 60 Front part 70 Temple 71 Core metal

Claims (5)

A hinge for spectacles that rotatably connects the front part and the temple,
A first piece connected to the front part; a second piece connected to the temple; and a shaft member connecting the two pieces;
The hinge for glasses, wherein the first piece and / or the second piece is provided with an elastic part that is deformable by a superelastic material.   The hinge for glasses according to claim 1, wherein the elastic portion is formed in a shape forming a part of an annular body.   The first piece and the second piece are both provided with the elastic portion, and the two elastic portions are formed in a part of an annular body having the same outer diameter. The hinge for glasses according to 2.   The hinge for glasses according to any one of claims 1 to 3, wherein the temple is made of resin, and the second frame is formed integrally with a core metal of the temple.   The spectacles using the hinge for spectacles of any one of Claims 1 thru | or 4.