JPH09197351A - Spring hinge of spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring hinge for a spectacle frame with which the extremely smooth execution of the operation to elastically open temples is possible and the inexpensive exchange of the temples is possible. SOLUTION: The ends of both right and left endpieces E of a spectacles front frame F are provided with sliders 3 of which the front ends are elastically advanced and retreated by spring elasticity so that the temples T are energized in a folding direction by bringing the front ends of these sliders 3 into elastic contact with the base ends of the temples T when the temples T are expanded. As a result, the turning centers of the temples do not move even when the temples T are further elastically expanded to the outer side from an ordinarily opened state and, therefore, the operation to elastically open the temples is made smooth. Since all of the spring energizing means are composed on the endpiece E side, the inexpensive and easy exchange of the temples is possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved spring hinge for spectacles, and more specifically, an elastic expansion operation of a temple can be performed smoothly and the ear hook temple can be replaced at low cost. The present invention relates to a spectacle frame spring hinge that can be performed.

[0002]

2. Description of the Related Art As is well known, when putting on and taking off spectacles, there is a tendency that the free end side of the ear hook temple is forced to open outward, which causes a large force to be applied to the base end portion of the temple. It is easy to cause failure and deformation of the eyeglass frame. Conventionally, as a proposal to remove such an adverse effect, one hinge piece part of the hinge that hinge-connects the front frame and the ear hook temple can be elastically moved back and forth by a coil spring installed at the base end of the temple. There is a so-called "spring hinge" configured in.

However, since this conventional spring hinge is constructed so that the hinge piece component itself is elastically moved back and forth with respect to the ear hanging temple, the elastic expanding operability of the ear hanging temple is not so good. It wasn't smooth. That is,
In the conventional spring hinge, when the ear hook temple is elastically expanded further from the normally expanded state, the center point of the rotational movement of the ear hook temple is from the hinge piece to the temple base end. The movement to the abutment portion of the portion impairs the smoothness of the temple expanding operation due to the movement of the rotation center point.

Further, in the conventional spring hinge, since the ear hook temple has a spring biasing means such as a coil spring built therein, the ear hook temple may be deformed, for example, to deform the ear hook temple. When it becomes necessary to replace the ear hook temple with the spring hinge, the temple replacement cost is high.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the conventional spring hinge, and it is necessary to smoothly perform the elastic expansion operation of the ear hook temple. It is a technical object to provide a spring hinge for spectacles that can be manufactured at a low cost and that can be replaced at a low cost.

Another technical object of the present invention is to provide, in addition to the above-mentioned object, a spring hinge for eyeglasses in which the spring elastic force can be easily adjusted.

Still another technical problem of the present invention is to provide a spring hinge for eyeglasses which can be manufactured at low cost in addition to the above problems.

[0008]

SUMMARY OF THE INVENTION In order to solve the above technical problems, the present invention provides a piece part H provided at the carry-out end of the end piece E at the left and right ends of the spectacle front frame F.
₁ and companion piece parts H provided at the base end of the ear hook temple T
An eyeglass hinge in which ₂ and ₂ are rotatably hinged by a hinge screw S, and a slider whose tip end elastically moves back and forth by spring elasticity is provided at an end of the end piece E, and an ear hook temple T The technical means of elastically contacting the distal end portion of the slider with the proximal end portion of the ear hanging temple T at the time of expanding and urging the ear hanging temple T in the folding direction is adopted.

In order to solve the above-mentioned technical problems, the present invention, if necessary, is a piece component H provided at the carry-out side end of the end piece E at the left and right ends of the spectacle front frame F. An eyeglass hinge that rotatably hinges ₁ and a companion piece component H ₂ provided at the base end of the ear hanging temple T by a hinge screw S, and an opening is formed at the end of the end piece E. A bottomed accommodating hole 1 having a female screw 11 engraved at the edge is formed. Inside the bottomed accommodating hole 1, a coil spring 2 in a compressed state and a screw type slider 3 having a diameter expanding head 31 are provided. A cylindrical stopper 4 having a male screw 41 formed on the outer peripheral surface of the cylinder is screwed into the female screw 11 of the bottomed accommodation hole 1 while being inserted, and by utilizing the spring elasticity of the compression coil spring 2. The tip end 32 of the screw slider 3 can be elastically moved back and forth through the cylindrical hole of the cylindrical stopper 4. The ear hook temple T is elastically brought into contact with the base end of the ear hook temple T when the ear hook temple T is expanded to bias the ear hook temple T in the folding direction. I adopted the technical means.

Further, in order to solve the above-mentioned technical problems, the present invention further includes, if necessary, a piece component provided at the carry-out side end of the end piece E at the left and right ends of the spectacle front frame F. An eyeglass hinge which rotatably hinges H ₁ and a companion piece component H ₂ provided at the base end of the ear hanging temple T by a hinge screw S, and at the end of the end piece E. ,
A cylindrical housing case 5 having an internal thread 51 formed on one edge of the opening and a locking projection 52a formed toward the center of the hole is attached to the other opening 52. A flanged slider 6 around which a flange 61 is provided around the rear end and a coil spring 7 in a compressed state are inserted therein, and the female screw 51 of the cylindrical housing case 5 has a male screw on the outer peripheral surface of the head. A screw type stopper 8 having 81 engraved therein is screwed, and by utilizing the spring elasticity of the compression coil spring 7, the flange 61 is locked by the locking projection 52a of the cylindrical housing case 5. The tip end portion 62 of the flanged slider 6 is made to project elastically back and forth from the opening 52 of the cylindrical housing case 5 so that the tip portion 62 of the flanged slider 6 is expanded when the ear hanging temple T is opened.
The technical means of elastically contacting the base portion of the ear hanging temple T to urge the ear hanging temple T in the folding direction is adopted.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on first to third embodiments shown in the accompanying drawings. 1 is a schematic plan view showing an eyeglass frame to which the spring hinge of the first embodiment is applied, and FIGS. 2 to 4 are partially enlarged plan views illustrating the structure and operation of the spring hinge of the first embodiment. 5, FIG. 5 is a schematic plan view showing an eyeglass frame to which a spring hinge of the second embodiment is applied, FIG. 6 is a partially enlarged plan view illustrating the configuration of the spring hinge of the second embodiment, and FIG. 7 is a third embodiment. 8 is a schematic plan view showing an eyeglass frame to which a spring hinge of the present invention is applied, FIG. 8 is a partially enlarged plan view illustrating the configuration of the spring hinge of the third embodiment, and FIG. 9 is an implementation of the spring hinge of the third embodiment. It is a partial enlarged plan view explaining a modification.

[First Embodiment] In FIG. 1, what is designated by a symbol F is a spectacle front frame in which a pair of rims R and R are connected symmetrically by a bridge B. End pieces E and E are brazed and joined to both ends. In addition, what is designated by the symbol N in the drawing is a nose pad which is brazed and joined to the opposing inner portions of the pair of rims R and R, and what is designated by the symbol T is the ear hanging temple.

In the spring hinge of this embodiment, a piece part H ₁ provided at the end of the end piece E on the carry-out side and a companion piece part H ₂ provided at the base end of the ear hook temple T are provided. Eyeglass hinges that are hinged to be freely foldable with a number screw S, and by utilizing the spring elasticity of a coil spring installed in the end piece E, the ear hook temple T is elastically further outward from a normally opened state. It is configured so that it can be expanded (see FIG. 1).

That is, as shown in FIGS. 2 to 4, at the end of the end piece E on the carry-out side, a bottomed accommodation hole 1 having an opening on the temple side is formed along the longitudinal direction of the end piece. A female screw 11 is provided at the opening edge of the bottomed accommodation hole 1.
Is engraved. Then, in the bottomed accommodation hole 1,
A coil spring 2 in a compressed state and a screw slider 3 having a diameter-expanding head 31 are inserted from the temple side, and
A cylindrical stopper 4 having a male thread 41 formed on the outer peripheral surface of the cylinder is screwed into the female thread 11 of the bottomed accommodation hole 1. In addition, what is indicated by reference numeral 42 is a slot formed at the end of the cylindrical stopper 4 for screwing work by a driver.

With this structure, the screw slider 3
The diametrically expanded head 31 is urged toward the temple side by the coil spring 2 in a compressed state, while the diametrically expanded head 31 is engaged by the cylindrical stopper 4 screwed to the opening edge of the bottomed accommodation hole 1. As a result, the tip end portion 32 of the screw slider 3 is elastically advanced and retracted from the cylindrical hole of the cylindrical stopper 4.

As shown in FIGS. 2 to 4, when the ear hanging temple T is expanded, the tip end 32 of the screw slider 3 is elastically attached to the abutment surface of the base end of the ear hanging temple T. As a result of the contact, the screw slider 3 biases the ear hanging temple T in the folding direction, and the elastic expanding operation of the ear hanging temple T becomes possible.

As shown in FIGS. 2 to 4, in the spring hinge of this embodiment, when the ear hook temple T is elastically expanded further outward from the normally open state (see FIG. 2). (Fig. 3
Also, as shown in FIG. 4), the center point of the rotational movement of the ear hook temple T is moved to the abutment portion of the ear hook temple T as in the conventional product while being positioned at the hinge piece parts H ₁ and H _2. There is nothing to do. Therefore, the temple elastic expansion operation is smoother than that of the conventional product, and it is possible to provide a convenient spectacle frame.

Further, in the spring hinge of this embodiment, a spring urging mechanism for realizing elastic expansion of the temple is all formed on the end piece E side, and the ear hook temple T is provided with any mechanism. I haven't. Therefore, for example, even if the temples are deformed and it becomes necessary to replace the earrest temples, just like the normal eyeglass frame, only the earrest temples need to be replaced, and the temples can be replaced at low cost. It can be done easily. The temple replacement cost does not increase unlike the conventional product in which the spring mechanism is attached to the ear hook temple side.

In the spring hinge of this embodiment,
The tip portion 32 of the screw slider 3 is formed in a spherical shape. This allows a smoother temple elastic expansion. Further, in the present embodiment, the tubular stopper 4 is screwed onto the opening edge portion of the bottomed accommodation hole 1 to prevent the screw slider 3 from falling off. Therefore, the degree of screwing of the tubular stopper 4 is adjusted. By doing so, it is possible to appropriately adjust the protruding amount of the screw slider 3 and the compression state of the coil spring 2. Therefore, it is possible to easily change the elastic expansion angle range (about 32 ° in the present embodiment) and the elastic expansion force of the ear hanging temple T according to the TPO.

[Second Embodiment] A second embodiment shown in FIGS. 5 and 6.
In the spring hinge of the embodiment, the tubular housing case 5 is attached to the outside of the end portion of the end piece E by brazing, and the tubular housing case 5 is internally provided with a spring biasing mechanism such as a coil spring. There are features.

That is, as shown in FIG. 6, the end piece E
The cylindrical accommodating case 5 attached to the end portion on the carry-out side has a cylindrical shape, and the female screw 51 is engraved on one opening edge of the cylindrical accommodating case 5, while the other A locking projection 52a is formed in the opening 52 on the temple side toward the center of the circular hole. In addition, a flanged slider 6 having a collar portion 61 around its rear end and a coil spring 7 in a compressed state are inserted into the cylindrical housing case 5 from the side opposite to the temple, and the cylindrical housing case A screw stopper 8 having a male screw 81 engraved on the outer peripheral surface of the head is screwed onto the female screw 51 of No. 5. What is indicated by reference numeral 82 is a slot formed at the end of the screw type stopper 8 for screwing work by a driver.

With this structure, the flanged slider 6 is
While being pressed toward the temple by the coil spring 7 in the compressed state, the flange portion 61 is locked by the locking protrusion 52a formed in the opening 52 of the cylindrical housing case 5, and as a result, the flange is attached. The tip portion 62 of the slider 6 is elastically advanced and retracted from the opening 52 of the cylindrical housing case 5.

At the time of expanding the ear hanging temple T, the tip portion 62 of the flanged slider 6 is moved to the ear hanging temple T.
Since it comes into elastic contact with the abutment surface of the base end of the, the flanged slider 6 biases the ear hanging temple T in the folding direction, and the elastic expanding operation of the ear hanging temple T becomes possible. is there.

Also in the spring hinge of this embodiment, the ear hook temple T is normally opened as in the first embodiment (see FIG. 5).
(See the solid line in the middle), the center point of the rotational movement of the ear hook temple T is on the hinge piece parts H ₁ and H ₂ even when elastically expanded further outward (see the chain double-dashed line in FIG. 5). Stay in place,
Unlike the conventional product, it does not move to the abutment portion of the ear hook temple T. Therefore, the temple elastic expansion operation is smoother than that of the conventional product, and a convenient spectacle frame can be provided.

Further, in the spring hinge of this embodiment, the spring urging mechanism for realizing the elastic expansion of the temple is entirely housed in the cylindrical housing case 5, and the cylindrical housing case 5 is attached to the end piece E. The first embodiment is similar to the first embodiment.
No mechanism is attached to the ear hook temple T. Therefore, even if it is possible to manufacture at extremely low cost and it becomes necessary to replace the earrest temples due to deformation of the temple or the like, for example, just replace the earrest temples like a normal eyeglass frame. The temples can be replaced easily and inexpensively. Moreover, since the end piece E can be prevented from being enlarged by adopting the tubular housing case 5, the face width is larger than the distance between the left and right eyes without impairing the appearance balance of the spectacle front frame F. It is possible to provide a spectacle frame that is suitable for a person.

In the spring hinge of this embodiment,
The front end 61 of the flanged slider 6 is formed in a spherical shape. This allows for a smoother temple elastic expansion. Further, in the present embodiment, the screw stopper 8 is screwed onto the female screw 51 of the cylindrical housing case 5 to prevent the flanged slider 6 from falling off, so that the screwing degree of the screw stopper 8 is adjusted. This makes it possible to appropriately adjust the protrusion amount of the flanged slider 3 and the compression state of the coil spring 7. Therefore, it is possible to easily change the elastic expansion angle range and elastic expansion force of the ear hanging temple T according to the TPO.

[Third Embodiment] In the spring hinge of this embodiment shown in FIGS. 7 and 8, the cylindrical housing case 5 of the second embodiment described above is provided at the end of the end piece E on the carry-out side. It is characterized in that it is provided in an orthogonal state, and other configurations are the same as in the second embodiment.

In the present embodiment, as shown in FIG. 8, a fitting hole E ₀ is formed in the carry-out end portion of the end piece E, and the cylindrical housing case 5 is fitted in the fitting hole E ₀ in an orthogonal state. The tubular housing case 5 is provided so as to project in a direction substantially parallel to the spectacles front frame F by brazing. The tip end portion 62 of the flanged slider 6 which is elastically retractable and housed inside the cylindrical housing case 5 is brought into elastic contact with the side surface of the base end portion of the ear hanging temple T. As a result, when the ear hanging temple T is opened, the collared slider 6
That is, the ear hook temple T is urged in the folding direction to enable the elastic opening operation of the ear hook temple T.

As in the modified embodiment shown in FIG. 9, a cylindrical contact terminal T ₁ is provided at the base end of the ear hook temple T, and the tip 62 of the flanged slider 6 is elastically attached to this contact terminal T _1. Of course, they may be contacted with each other. By doing so, the elastic expansion of the ear hanging temple T can be performed more smoothly.

[0030]

As described above with reference to the embodiments, in the spring hinge according to the present invention, even when the ear hook temple is elastically expanded to the outside from the normally opened state, the ear hook is extended. Since the center point of the pivotal movement of the temple does not move, the temple elastic expansion operation is smoother and easier to use than the conventional spring hinge in which the hinge piece component itself is elastically retractable. A spectacle frame can be provided.

Further, since all the spring biasing mechanism for realizing the elastic expansion of the temple is formed on the end piece side and no mechanism is attached to the ear hook temple side, for example, the temple is deformed. Even if it is necessary to replace the ear hook temple, it is only necessary to replace the ear hook temple, and the temple replacement cost is high like the conventional product with a spring mechanism attached to the ear hook temple side. It will never happen.

Furthermore, when a stopper for preventing the slider for urging the ear hook temple from coming off due to the spring elasticity of the coil spring is screwed to the end piece part or the like, the screwing degree of this stopper is adjusted. By doing so, it is possible to change the elastic expansion angle range and elastic expansion force of the ear hanging temple T, and it is also easy to appropriately adjust the elastic expansion of the ear hanging temple according to TPO. obtain.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an eyeglass frame to which a spring hinge of the first embodiment is applied.

FIG. 2 is a partially enlarged plan view illustrating the structure and operation of the spring hinge of the first embodiment.

FIG. 3 is a partially enlarged plan view illustrating the structure and operation of the spring hinge of the first embodiment.

FIG. 4 is a partially enlarged plan view illustrating the structure and operation of the spring hinge of the first embodiment.

FIG. 5 is a schematic plan view showing an eyeglass frame to which a spring hinge of the second embodiment is applied.

FIG. 6 is a partially enlarged plan view illustrating a configuration of a spring hinge of the second embodiment.

FIG. 7 is a schematic plan view showing an eyeglass frame to which a spring hinge of the third embodiment is applied.

FIG. 8 is a partial enlarged plan view illustrating the configuration of a spring hinge of the third embodiment.

FIG. 9 is a partially enlarged plan view showing a modified example of the spring hinge of the third embodiment.

[Explanation of symbols]

F Eyeglass front frame E End piece H ₁ piece component H ₂ Bidirectional piece component S Hinge screw 1 Bottomed hole 11 Female screw 2 Coil spring 3 Screw type slider 31 Expanding head 32 Tip part 4 Cylindrical stopper 41 Male screw 5 Cylindrical Housing case 51 Female screw 52 Opening 52a Locking protrusion 6 Slider with collar 61 Collar portion 62 Tip portion 7 Coil spring 8 Screw type slider 81 Male screw

Claims (4)

[Claims] 1. A piece component H ₁ provided on the carry-out side end portions of the end pieces E at the left and right ends of the spectacle front frame F and a companion piece component H ₂ provided on the base end portion of the ear hook temple T. Is a spectacle hinge for rotatably hinge-connecting with a hinge screw S, and a slider whose distal end elastically moves back and forth by spring elasticity is provided at the end of the end piece E, and the ear hook temple T A spring hinge for spectacles, characterized in that the tip end of the slider is elastically brought into contact with the base end portion of the ear hanging temple T to urge the ear hanging temple T in the folding direction during expansion. 2. A piece component H ₁ provided at the carry-out side end portions of the end pieces E at the left and right ends of the spectacle front frame F and a companion piece component H ₂ provided at the base end portion of the ear hook temple T. Is a spectacle hinge that rotatably hinges with a hinge screw S, and a bottomed accommodation hole 1 in which an internal thread 11 is engraved at the opening edge is formed at the end of the end piece E. A coil spring 2 in a compressed state and a screw type slider 3 having a diameter-expanding head 31 are inserted into the bottomed accommodation hole 1, and the female screw 11 of the bottomed accommodation hole 1 has a cylindrical outer periphery. A cylindrical stopper 4 having a male screw 41 engraved on its surface is screwed on, and by utilizing the elasticity of the compression coil spring 2, the tip end 32 of the screw slider 3 is elastically advanced and retracted from the cylindrical hole of the cylindrical stopper 4. This screw type slider can be movably projected to expand the temple T for ear hooks. A spring hinge for spectacles, characterized in that the tip portion 32 of 3 is elastically brought into contact with the base end portion of the ear hanging temple T to urge the ear hanging temple T in the folding direction. 3. A piece component H ₁ provided at the carry-out side end portions of the end pieces E at the left and right ends of the spectacle front frame F and a companion piece component H ₂ provided at the base end portion of the ear hanging temple T. Is a spectacle hinge for rotatably hinge-connecting with a hinge screw S, and an end portion of the end piece E is provided with a female screw 51 at one opening edge and the other opening portion 52 is provided. A tubular accommodating case 5 having a locking projection 52a formed toward the center of the hole is additionally provided. Inside the tubular accommodating case 5, a flanged slider 6 having a rear end provided with a flange 61 is provided. And the coil spring 7 in a compressed state are inserted, and the female screw of the cylindrical housing case 5 is inserted.
A screw-type stopper 8 having a male screw 81 engraved on the outer peripheral surface of the head is screwed to the head 51, and by utilizing the spring elasticity of the compression coil spring 7, the locking projection 52a of the cylindrical housing case 5 is secured. With the collar portion 61 locked, the tip end portion 62 of the collared slider 6 is made to project elastically back and forth from the opening portion 52 of the tubular housing case 5 so that the ear hook temple T is expanded. A spring hinge for spectacles, characterized in that the tip portion 62 of 6 is elastically brought into contact with the base end portion of the ear hanging temple T to bias the ear hanging temple T in the folding direction. 4. A tubular accommodating case 5 is provided at the end of the end piece E on the carry-out side so as to project in a direction substantially parallel to the spectacles front frame F, and when the ear hook temple T is expanded, the flanged slider. 4. The spectacles according to claim 3, wherein the tip portion 62 of 6 is elastically brought into contact with the side surface of the base end portion of the ear hanging temple T to bias the ear hanging temple T in the folding direction. Spring hinge.