JPH0550422U - Eyeglass frame - Google Patents

Abstract

(57) [Summary] [Purpose] Despite the fact that the hinge part uses a torsion spring, it prevents the hinge part from swinging in directions other than the opening / closing direction. [Structure] A spectacle frame using a coil spring 6 for a hinge part 7, wherein the coil spring 6 is oriented in a direction other than the opening / closing direction of the hinge part 7.
The coil spring 6 is provided with a core material 8 for restricting the deflection of the coil spring 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a spectacle frame using a torsion spring in the hinge portion, and particularly to the structure of the hinge portion.

[0002]

[Prior Art]

 A conventional spectacle frame of this type is, for example, as shown in FIG. 6 (see Japanese Utility Model Laid-Open No. 54-170140). That is, this spectacle frame covers the outer side surface of the wisdom 104 and the outer side surface of the temple 105 by straddling the side surfaces of both ends of the coil spring 106 as a torsion spring so as to have elasticity in the opening and closing direction of the temple 105. The hinge portion 107 is fixedly attached to the and.

[0003]

[Problems to be solved by the device]

 However, in the case of the above-mentioned conventional technique, the coil spring 106 is attached to form the hinge portion 107, but since the number of turns of the coil spring 106 is one, one end of the coil spring 106 is the other end. Therefore, the temple 105 fixed to one end of the coil spring 106 can move in any direction other than the opening / closing direction (hereinafter, referred to as a defective direction) with respect to the tip 104 fixed to the other end. ), For example, as shown in FIGS. 6 (c) and 6 (d), it swings in a direction perpendicular to the opening / closing direction, and stable positioning cannot be obtained when the face is worn.

The present invention has been made in order to solve the above-mentioned problems of the prior art. The purpose of the present invention is to open and close the hinge portion even if a torsion spring is used for the hinge portion. It is to provide an eyeglass frame that does not swing in a direction other than the direction (defective direction).

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, there is provided an eyeglass frame using a torsion spring in a hinge portion, and the deflection of the torsion spring in a direction other than the opening / closing direction of the hinge portion is controlled. The torsion spring is provided with a shake restraining means.

Further, the torsion spring may be composed of a coil spring, and the shake restricting means may be constituted by setting the number of turns of the coil spring to at least two.

Further, the torsion spring may be composed of a coil spring, and the shake restricting means may be constituted by disposing the trunk portion of the core material in an empty space on the inner diameter side of the coil spring.

Further, the torsion spring is composed of a coil spring, and the deflection restricting means is configured such that the number of windings of the coil spring is at least two and the body portion of the core material is arranged in an empty space on the inner diameter side of the coil spring. Is preferred.

Further, it is desirable that the core material is provided with flange portions that sandwich the coil spring at both ends of the body portion.

Further, the core member may be provided with a flange portion that sandwiches the coil spring, on both ends of the body portion and on the circumference of the body portion where the wire rods of the coil spring in the wound state are sandwiched.

[0011]

[Action]

 In the spectacle frame having the above-mentioned configuration, since the torsion spring is provided with the deflection restricting means, the deflection of the torsion spring in the directions other than the opening / closing direction is restricted, and therefore the deflection of the hinge in the directions other than the opening / closing direction. Can be suppressed.

When the torsion spring is composed of a coil spring and the runout restricting means is configured by setting the number of turns of the coil spring to be at least two, the coil spring is elastic in the direction in which the coil spring is wound. The force required to deform the coil spring is greater when the coil spring has two turns than when it has one turn, and when it has three turns than when it has two turns. When at least two turns are made, elastic deformation in the vertical direction is less likely to occur, and one end of the coil spring is less likely to swing in the defective direction with respect to the other end.

Further, when the runout restricting means is configured by disposing the body part of the core material in an empty space on the inner diameter side of the coil spring, one end of the coil spring tries to run out in the defective direction with respect to the other end. When the wire rod parts of the coil spring try to deviate from each other with respect to the central axis, the inner diameter surface of the wire part of the coil spring abuts the outer peripheral surface of the core member and receives stress. The shake in the direction is suppressed.

Further, when the deflection restricting means sets the number of turns of the coil spring to at least two, and the body portion of the core material is arranged on the coil spring, the elastic deformation of the coil spring in the direction in which the coil springs are stacked is as described above. It is difficult to do so, and since the distance between the upper wire and the lower wire is increased by setting the number of turns of the coil spring to at least two, when the wire rods try to deviate in different directions The torque received from the outer peripheral surface of the body of the material increases, and the deflection in the same direction can be suppressed more effectively.

Further, when the core material is provided with the flange portion that sandwiches the coil spring at both ends of the body portion, in addition to the above-mentioned action, even if the coil spring tries to swing in the defective direction, it is abutted against the flange portion. Deflection in the defective direction is suppressed.

Further, when the core member is provided with the flange portion for sandwiching the coil spring on both ends of the body portion and on the circumference of the body portion, in addition to the above-mentioned action, all the wire members of the coil spring are sandwiched by the flange portion, As a result, the displacement in the defective direction is restricted for each part of the wire rod, and as a whole, the deflection of the coil spring in the defective direction is further effectively suppressed.

[0017]

【Example】

 The present invention will be described below based on the illustrated embodiment. 1 and 2 show a spectacle frame according to a first embodiment of the present invention, in which FIG. 1 shows the whole spectacle frame. The rims 3 are connected to each other, and the tip 4 provided on both rims 3 and the left and right temples 5 are connected via a coil spring 6.

That is, in the present invention, the hinge portion 7 is the coil spring 6 as a torsion spring.

As the material of the coil spring 6, an iron-based, copper-based, Ti-based spring material or a super-elastic material such as iron-based, copper-based, Ni—Ti-based spring material is used.

As can be seen from FIG. 1 (c), the shape of the coiled spring is a circular cross section and has a diameter smaller than the size of the wisdom 4 and the temple 5, and the coiled spring arranged on the right side when the spectacle frame 1 is attached. The coil spring 6 is wound counterclockwise as shown in FIG. 2, and the coil spring 6 arranged on the left side is wound at least twice clockwise and three times in this embodiment.

In the coiled coil spring 6 in the wound state, the upper wire 6a located above, the lower wire 6b located below, and the middle wire 6c located in the middle are in contact with each other, or Is set so that even if there is a gap, it is very small.

The upper wire 6 a and the lower wire 6 b are joined to the temple 4 and the temple 5, respectively.

By the way, the coil spring 6 is provided with a core material 8 made of a rigid material.

The core material 8 has a diameter larger than that of the body portion 10 arranged by being inserted into the empty space 9 on the inner diameter side of the coil spring 6 and the body portion integrally formed at the upper end of the body portion 10. The upper flange portion 11, a mounting portion 12 formed integrally with the lower end of the body portion, and a separate flange portion 13 mounted on the mounting portion 12.

When the body portion 10 of the core material 8 is inserted into the empty space 9 on the inner diameter side of the coil spring 6, the gap between the inner portion of the coil spring 9 and the inner diameter surface becomes very small or It is formed in such a size and shape that it abuts or presses without contact. The height of the body portion 10 is set to be substantially the same as the height of the coil spring.

The upper flange portion 11 has a diameter substantially the same as the outer diameter of the coil spring 6.

The mounting portion 12 has a reduced diameter portion 13 having a diameter smaller than that of the body portion 10, and has a diameter larger than that of the reduced diameter portion 13 and has a diameter which is the same as or slightly smaller than that of the body portion 10 and tapers downward. It consists of a return portion 14 that narrows in a shape.

The lower flange portion 13 has substantially the same diameter as the upper flange 11, and has a fitting hole 14 into which the reduced diameter portion 13 of the mounting portion 12 is fitted.

A through hole 15 is formed from the upper flange portion 11 to the mounting portion 12.

To attach the core material 8 to the coil spring 6, the core material 8 is inserted into the empty space 9 on the inner diameter side of the coil spring 6 with respect to the attachment portion 12, and the upper wire rod 6 a is inserted into the upper flange portion 11. Positioning is performed by hitting the surface 11a. Then, the fitting hole 14 of the lower flange 13 is press-fitted into the return portion 14 of the mounting portion 12 projecting downward from the lower wire 6b and fitted into the reduced diameter portion 13. At this time, the lower flange portion 13 is fixed by the lower end surface of the body portion 10 and the return portion 14. Thus, as shown in FIG. 1B, the coil spring 6 is provided with the core material 8.

In contrast to the above, in the core material 8, the lower flange portion 13 may be integrated with the body portion 10 and the upper flange portion 11 may be a separate body.

It is also possible to attach the coil spring 6 to the core member 8 by integrating the upper and lower flange portions 11 and 13 with the body portion 10 and winding a wire around the body portion 10 to form a coil spring. is there.

Further, when the upper and lower flange portions 11 and 13 are integrated with the body portion 10, the diameter of the coil spring 6 can be expanded and attached to the core material 8.

The operation and effect of this embodiment having the above configuration will be described below.

Since the upper wire 6a and the lower wire 6b of the coil spring 6 as the hinge portion are joined to the wire 4 and the temple 5, respectively, the hinge portion 7 has spring elasticity in the opening / closing direction. As a result, impact resistance is improved as compared with the case where a hinge including a bridge and a screw is used for the hinge portion.

Since the number of turns of the coil spring 6 is at least two, and three in the present embodiment, the coil spring 6 is wound in the direction in which the coil springs 6 are stacked (hereinafter referred to as the vertical direction). The force required to deform the coil spring 6 is greater when the coil spring 6 has two turns than when it has one, and when the coil spring 6 has three turns than when it has two turns. Elastic deformation is less likely to occur with three turns than with one turn, and the ends of the upper wire 6a and the ends of the lower wire 6b in directions other than the opening / closing direction (hereinafter referred to as the defective direction) It becomes difficult to shake against. Further, since the wire rods 6a, 6b, 6c are in contact with each other, or even if there is a gap, the wire rods are made minute, it is more difficult to shake. This suppresses the temple 5 from swinging in the defective direction.

Further, since the body portion 10 of the core member 8 is arranged in the space 9 on the inner diameter side of the coil spring 6, the end portion of the upper wire rod 6a may swing in the defective direction with respect to the end portion of the lower wire rod 6b. When each of the wire rods 6a, 6b, 6c tries to shift with respect to the central axis, the inner diameter surface of the coil spring abuts on the outer peripheral surface of the body portion 10 of the core material 8 Therefore, the shake in the defective direction is suppressed.

Further, since the coil spring 6 has three turns, the distance between the upper wire 6a and the lower wire 6b increases, so that the wire rods 6a, 6b, and 6c may be displaced in directions that are alternately staggered. The torque received from the outer peripheral surface of the body portion 10 of the core material 8 at the time of rotation is increased more than when it is wound once, and the deflection in the defective direction is more effectively suppressed.

Further, since the core member 8 is provided with the flange portions 11 and 13 for sandwiching the coil spring 6 at both ends of the body portion 10, in addition to the above-mentioned action, even if the coil spring 6 tries to swing in the defective direction. The upper wire rod 6a and the lower wire rod 6b are abutted against the flange portions 11 and 13, so that the runout in the defective direction is suppressed.

Another embodiment of the present invention will be described below. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 3 shows a spectacle frame according to a second embodiment of the present invention, in which the structure of the core material 8 is different from that of the first embodiment. That is, in the present embodiment, as flange portions that sandwich the coil spring 6, in addition to the upper flange portion 11 and the lower flange portion 13, middle flange portions 16 and 17 are provided on a predetermined circumference of the body portion 10. ing. This predetermined circumference means that the wire rods 6a, 6b and 6c can be wound between the flange portions 11, 13, 16 and 17, and whether or not the wire rods abut the adjacent flange portion when wound. Or, it is on the circumference where there is a minute gap even if there is a gap.

The upper and lower flange portions 11 and 13 may be integrated as in the first embodiment or may be separate members. When the inner flange portions 16 and 17 are formed separately, it is preferable that the inner flange portions 16 and 17 are divided into both semicircles as well as having fitting holes. By doing so, the core material can be attached to the coil spring 6 already formed.

With such a configuration, in addition to the action and effect of the first embodiment, all the wire rods 6a, 6b, 6c are sandwiched by the flange portions adjacent to them, which is not preferable. The displacement in the direction is restricted with respect to the wire rods 6a, 6b, and 6c, so that the deflection of the coil spring 6 in the defective direction can be more effectively suppressed as a whole.

FIG. 4 shows an eyeglass frame according to a third embodiment of the present invention, which is similar to the first embodiment in that the coil spring 6 is used for the hinge portion, but the coil spring 6 The difference is that the upper wire 6a is not fixed to the tip 4, and the coil spring 6 is rotatably held by the male piece 19 of the tip 4 as a female piece 18. That is, the hinge portion 7 of the spectacle frame according to this embodiment is composed of the male piece portion 19 and the female piece portion 18.

The female piece portion 18 is composed of a coil spring 6. In the coil spring 6, an end portion of the lower wire rod 6b is fixed to the temple 5, and an end portion of the upper wire rod 6a is positioned on the lower wire rod 6b. Is becoming

The male piece portion 19 includes an upper flange portion 11 formed by projecting the upper portion of the tip 4, a screw 21 inserted into a screw hole 20 penetrating from the upper surface to the lower surface of the upper flange portion 11, and a screw. The core member 8 is screwed into a screw 21 inserted into the hole 20.

The upper part of the screw hole 20 has a large diameter so that the head of the screw can be accommodated.

The core member 8 is composed of a body portion 10 which is inserted into an empty space 9 on the inner diameter side of the coil spring 6 and a lower flange portion 13 which is integrally formed on the lower surface of the body portion 10.

A thread groove 22 into which a screw 21 is screwed is provided from the upper surface to the lower surface of the body 10. The height of the body portion 10 is set to be equal to or a little higher than the total height of the upper wire rod 6a and the lower wire rod 6b.

Then, the male piece portion 19 and the female piece portion 18 are attached by placing the coil spring 6 as the female piece portion 18 below the upper flange portion 11 and inserting the screw 21 through the screw hole 20 to insert it. By screwing the core material 8 into the threaded screw 21, the body portion 10 of the core material 8 is positioned in the empty space 9 on the inner diameter side of the coil spring 6, and the upper and lower surfaces of the coil spring 6 are in the upper flange. The hinge portion 7 is formed by being sandwiched between the portion 11 and the lower flange portion 13.

The operation and effect of this embodiment will be described with reference to FIGS. 4 (c) and 4 (d). The opening / closing operation from the closed state of FIG. 4 (c) to the open state of FIG. 4 (d) is performed in the same manner as a hinge made of a normal hinge member. That is, the backlash at the time of opening and closing is obtained by the force of the upper and lower flange portions 11 and 13 holding the coil spring 6 as the female piece portion 18.

Further, in this embodiment, since the coil spring 6 is used as the female piece 18, even if a force is applied in the further opening direction from the open state of FIG. 4D, the elastic deformation of the coil spring 6 is changed. As a result, the force is absorbed, and the impact resistance of hinge portion 7 is improved.

Moreover, the body portion 10 of the core material 8 is located in the space 9 on the inner diameter side of the coil spring 6, and the upper and lower surfaces of the coil spring 6 are sandwiched by the upper and lower flange portions 11 and 13. Therefore, as in the first embodiment, the deflection of the temple 5 in the defective direction is suppressed.

Although the number of turns of the coil spring 6 is one in this embodiment, it may be two or more.

FIG. 5 shows an eyeglass frame according to a fourth embodiment of the present invention. Like the third embodiment, the upper wire 6a of the coil spring 6 is not fixed to the tip 4, and the coil spring 6 is The female piece 18 is rotatably held by the male piece 19 of the wisdom 4.

The main point different from the third embodiment is that the holding force of the upper and lower flanges is not used for positioning the temple 5, but the end of the upper wire 6a of the coil spring 6 is projected to the tip 4. It is a point that is made by hitting.

Also in this embodiment, the hinge portion 7 of the spectacle frame is composed of the male piece portion 19 and the female piece portion 18.

The female piece portion 18 is composed of a coil spring 6. In the coil spring 6, the end portion of the lower wire rod 6b is fixed to the temple 5, and the end portion of the upper wire rod 6a further projects in the centrifugal direction from above the middle wire rod 6c. To form an abutting portion 23. The number of turns is three.

The male piece portion 19 includes a crank portion 25 projecting from the lens holding member 24, a body portion 10 of the core material 8 formed at an end of the crank portion 25, and a flange provided on the lower surface of the body portion 10. It is made up of J part 13.

The diameter of the body portion 10 is set to be approximately the same as the inner diameter of the coil spring 6, and the height thereof is set to be slightly higher than the height of the coil spring 6.

The flange portion 13 has a diameter larger than that of the body portion 10 and is made substantially the same as the outer diameter of the coil spring 6.

The attachment of the male piece portion 19 and the female piece portion 18 is completed by inserting the coil spring 6 into the body portion 10 and bringing the coil spring 6 into contact with the flange portion 13.

The operation and effect of this embodiment having the upper structure will be described with reference to FIGS. The opening / closing operation from the closed state of FIG. 5 (c) to the open state of FIG. 5 (d) is performed like a hinge made of a hinge member. That is, the elasticity of the coil spring 6 in the opening / closing direction is not used for the opening / closing operation, but the sliding resistance between the inner diameter surface of the coil spring 6 and the body portion 10 is used.

When the temple 5 is opened to the state of FIG. 5D, the abutting portion of the coil spring 6 abuts on the crank portion 25 and the positioning is performed.

Since the coil spring 6 is used as the female piece portion 18 in this embodiment, the elastic deformation of the coil spring 6 is exerted even when a force is applied from the open state shown in FIG. As a result, the force is absorbed, and the impact resistance of the hinge 7 is improved as in the third embodiment.

Moreover, since the coil spring 6 has three windings and the body portion 10 of the core material 8 is located in the empty space 9 on the inner diameter side thereof, the defective direction of the temple 5 is the same as in the first embodiment. Swing to

In the above embodiment, the torsion spring is a cylindrical coil spring and the body portion 10 is cylindrical, but the shape is not limited to these.

The present invention can also be applied to a spectacle frame of the type shown in FIG. Further, in the present embodiment, the hinge part 7 is provided at the intersection of the temple 5 and the wisdom 4, but the invention is not limited to this. It can be provided at the center of the front or at an appropriate place on the temple 5.

[0069]

[Effect of the device]

 As described above, according to the present invention, since the torsion spring is used for the hinge portion, it has impact resistance, and since the torsion spring is equipped with the shake restricting means, it is possible to prevent the torsion spring from moving in the defective direction. The shake is regulated, and the positioning is properly performed when wearing the glasses.

[Brief description of drawings]

FIG. 1A is a schematic configuration diagram of a hinge portion of an eyeglass frame according to a first embodiment of the present invention, and FIG. 1B is a front view of the hinge portion.
(C) is the sectional view on the AA line of (a).

FIG. 2 is a schematic perspective view of the spectacle frame of FIG.

FIG. 3 (a) is a schematic perspective view of a core member of a hinge portion of an eyeglass frame according to a second embodiment of the present invention, and FIG. 3 (b) is a cross-sectional view of a coil spring wound around the core member. It is a figure.

FIG. 4A is a schematic configuration diagram of a hinge portion of an eyeglass frame according to a third embodiment of the present invention, and FIG. 4B is a side view of the hinge portion.
(C) And (d) is a figure explaining the action of the hinge part,
(E) is a right half front view of the eyeglass frame.

5A is a schematic configuration diagram of a hinge portion of an eyeglass frame according to a fourth embodiment of the present invention, FIG. 5B is a schematic configuration diagram of a male piece portion of the hinge portion, and FIG. (D) is an explanatory view of the action of the hinge part,
(E) is a right half front view of the eyeglass frame.

FIG. 6A is a perspective view of a hinge portion of a conventional spectacle frame,
(B) is a plan view of (a), (c) and (d) are figures explaining the problem which the same spectacle frame has.

[Explanation of symbols]

 6 Coil Spring (Torsion Spring) 6a Upper Wire Rod 6b Lower Wire Rod 6c Middle Wire Rod 7 Hinged Piece 8 Core Material 9 Inner Diameter Side Empty 10 Body (Vibration Limiting Means) 11 Upper Flange 13 Lower Flange 16 and 17 Middle Flange

Claims (6)

[Scope of utility model registration request] 1. A spectacle frame using a torsion spring for a hinge part, wherein the torsion spring includes a shake restricting means for restricting a shake of the torsion spring in a direction other than an opening / closing direction of the hinge part. Eyeglass frame. 2. The spectacle frame according to claim 1, wherein the torsion spring is formed of a coil spring, and the shake restraining means is constituted by setting the number of turns of the coil spring to at least two. 3. The spectacle frame according to claim 1, wherein the torsion spring is formed of a coil spring, and the shake restraining means is constituted by disposing a body portion of the core material in an empty space on the inner diameter side of the coil spring. 4. The torsion spring is composed of a coil spring, and the deflection restricting means is constituted by setting the number of turns of the coil spring to at least two, and disposing the body part of the core material in an empty space on the inner diameter side of the coil spring. The spectacle frame according to claim 1, wherein 5. The spectacle frame according to claim 3, wherein the core member is provided with flange portions that sandwich the coil spring at both ends of the body portion. 6. The core member according to claim 4, wherein the core member is provided with a flange portion for sandwiching the coil spring on both ends of the body portion and on a circumference of the body portion on which the wire rods of the coil spring in a wound state are sandwiched. Eyeglass frame.