JP6765698B1 - Screwless hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively suppress vertical runout of a temple with a simple structure, to stably open and close the temple, and to easily remove the temple from a lens or a rim without welding or the like. We provide screwless hinges for eyeglasses that never happen. SOLUTION: There is no screw of a spectacle having a fitting groove 22 formed at the tip of a temple 2, a shaft member 10 fitted in the fitting groove 22, and a wisdom 4 rotatably attached to the shaft member 10. In the hinge 1, the fitting groove 22 has a parallel portion 22 extending in the same direction as the longitudinal axis C1 of the plate-shaped temple 2, and the engaging portion 2b formed on at least one of the upper side and the lower side of the parallel portion 22. And the engaged portion 12d formed on the shaft member 10, and when the shaft member 10 is fitted into the parallel portion 22, the engaged portion 2b and the engaged portion 12d are engaged with each other. The shaft member 10 is configured to have a regulating means for restricting the movement of the shaft member 10 in the fitting groove 22. [Selection diagram] Fig. 1

Description

The present invention relates to a screwless hinge of an eyeglass frame.

As the screwless hinge, for example, the one described in Patent Document 1 is known. The screwless hinge described in this document has a U-shaped curved portion formed at the other end of a coupling member 11 having one end formed of a linear material installed on a lens or a rim, and at one end of a temple 13. The fitting member 12 having a groove formed in the circumferential direction is provided, and the U-shaped curved portion of the connecting member 11 comes into contact with the circumferential groove of the fitting member 12 at at least two places. The fitting member is rotatably fitted between the curved portions.

Japanese Unexamined Patent Publication No. 2001-75056

However, in the screwless hinge described in this document, the fitting member 12 having a groove formed in the circumferential direction is provided at least at two positions in the U-shaped curved portion of the connecting member 11 formed of the linear member. Since the temple 13 is sandwiched so as to be in contact with each other and the temple 13 is rotated, there is a problem that the holding force cannot be sufficiently obtained due to the structure of the temple 13 and the temple 13 swings in the vertical direction, which makes it uncomfortable to wear.
Further, in the screwless hinge described in this document, the fitting members 12 and 22 easily move back and forth with respect to the temple 13, and when a large force is applied to the fitting members 12 and 22, the fitting members 12 and 22 move. There is a problem that the lens or rim and the temple are easily detached from the U-shaped curved portion. Therefore, in the screwless hinge described in this document, it is recommended to weld the fitting members 12 and 22 to the temple 13 (see the description in paragraph 0018 of the same document).

The present invention has been made in view of the above problems, and has a simple structure that can effectively suppress the vertical runout of the temple, can stably open and close the temple, and does not require welding. It is also there to provide screwless hinges for eyeglasses where the temples do not easily come off the lens or rim.

In order to achieve the above object, the screwless hinge of the present invention has, as described in claim 1, a fitting groove formed at the tip of a temple or a wisdom, a shaft member fitted into the fitting groove, and the shaft member. In a screwless hinge of a spectacle having a wisdom or temple that is rotatably attached to a shaft member, the fitting groove is formed so as to penetrate from one side surface to the other side surface of the plate-shaped temple or wisdom, and the temple or the temple or the temple or the temple. It has a parallel portion that extends in the same direction as the longitudinal axis of the wisdom and has an opening for fitting the shaft member, and a concave engaging portion is formed at least one of the upper side and the lower side of the parallel portion. Is formed, and the shaft member is formed at the upper end and the lower end of the body portion to which the fitting portion formed at the tip of the temple or the temple is rotatably fitted, and the parallel portion thereof. It is formed between an engaging recess that fixes the body portion in the fitting groove by engaging the body portion so as to be sandwiched from both side surfaces, and the engaging recess and the body portion, and engages with the engaging portion. The engaged portion and the engaged portion engage with each other, and when the shaft member is fitted into the parallel portion, the engaged portion and the engaged portion engage with each other. By doing so, it is configured to constitute a regulating means for restricting the shaft member from moving in the fitting groove .
According to the above configuration, since a fitting groove is formed at the tip of the plate-shaped temple and the shaft member is fitted in the fitting groove, the temple does not easily bend and the vertical runout of the temple is suppressed. can do. Further, the movement of the shaft member can be regulated by engaging the concave portion and the convex portion only by fitting the shaft member into the fitting groove, and the shaft member can be restricted in the fitting groove. Since the movement of the temple is restricted, the temple does not rattle and the temple can be opened and closed stably.

Further, as described in claim 2 , an inclined portion may be formed which is inclined from the parallel portion and opens to the side edge of the temple or wisdom. By doing so, the temple and the wisdom can be made less likely to be decomposed.
Further, the shaft member may be integrally formed, but the connection between the wisdom and the temple can be easily and firmly performed, and the relative rotation between the wisdom and the temple can be smoothly performed. In order to achieve this, for example, as described in claim 3 , the shaft member may have a pin and a sleeve that is fitted onto the pin. In the shaft member having such a configuration, the shaft can be easily fitted by fitting the annular fitting portion formed on the wisdom or the temple to the sleeve and fitting the sleeve to the pin. The member and the wisdom or temple can be connected, and the connection can be made strong.

A preferred embodiment of the screwless hinge of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view for explaining the overall configuration of the screwless hinge of the present invention, FIG. 2 is an enlarged view of the screwless hinge, and FIG. 2 is an enlarged view of a tip portion of a temple to which the screwless hinge of the present invention is applied. (A) is an enlarged view of the tip portion of the wisdom to which the screwless hinge of the present invention is applied, (b) is a sectional view in the I-I direction of (a), and FIG. 4 is a screwless hinge of the present invention. An explanatory view of the pins to be formed is shown, (a) is a front view thereof, (b) is a side view thereof, (c) is a plan view thereof, and FIG. 5 is an explanatory view of a sleeve constituting the screwless hinge of the present invention. (A) is a front view thereof, and (b) is a plan view thereof.

As shown in FIG. 1, the screwless hinge 1 of the present invention connects a temple 2 and a wisdom 4 provided on a front frame (not shown) of eyeglasses, and the temple 2 can be freely folded with respect to the front frame. As shown in FIG. 1, the fitting groove 21 formed at the front end of the plate-shaped temple 2, the shaft member 10 fitted into the fitting groove 21, and the shaft member 10 are rotatable. It has the wisdom 4 to be fitted. The shaft member 10 has a pin 11 and a sleeve 12 that is fitted onto the pin 11.

[Structure of Temple 2 and Fitting Groove 21]
As shown in FIG. 2B, the temple 2 is formed in the shape of a plate having a rectangular cross section. By setting the long side in the vertical direction, even if a large bending stress acts in the vertical direction of the temple 2, the bending strain in the vertical direction of the temple 2 can be reduced.
The fitting groove 21 is formed on the front end side (chi 4 side) of the temple 2 and extends in parallel with the center line C1. The inclination angle α from the parallel portion 22 and the rear end of the parallel portion 22 with respect to the center line C1. It has an inclined portion 23 extending to the lower end of the temple 2 along the axis C2 intersecting at (α = 40 ° to 50 ° is preferable). The tip of the inclined portion 23 is opened at the lower end of the temple 2 to form an opening 23a for fitting the shaft member 10 described later into the fitting groove 21.

The width H2 of the opening 23a and the width H1 of the parallel portion 22 match the distance between the upper and lower bottoms of the shaft member 10 (see FIG. 4B), which will be described later.
At the boundary between the inclined portion 23 and the parallel portion 22 and the boundary between the opening 23a and the lower end of the temple 2, the shaft member 10 inserted into the opening 23a is pressed smoothly and with a certain force or more (the shaft member 10 is usually used). It is preferable to form a smooth partial arc, curved or curved shape as shown so that the eyeglasses can be pushed into the parallel portion 22 by a pressing force that does not easily escape from the fitting groove 21 when the eyeglasses are used.

Further, since the lower portion 2a of the parallel portion 22 in the temple 2 has a cantilever shape, it can be elastically deformed by a preset amount by applying the pressing force to cooperate with the inclined portion 23. By the action, the shaft member 10 can be easily fitted into the fitting groove 21, and the shaft member 10 can be suppressed from coming out of the fitting groove 21.
The amount of elastic deformation of the lower portion 2a can be appropriately set by adjusting the length, wall thickness, width, etc. of the lower portion 2a in the front-rear direction.

[Composition of Satoshi 4]
As shown in FIG. 3, an annular fitting portion 41 for fitting the shaft member 10 is formed at the tip of the wisdom 4. The inner diameter L1 of the annular hole of the fitting portion 41 is the same as the outer diameter L4 (see FIG. 5) of the main body portion 12a of the sleeve 12 that determines the outer diameter of the shaft member 10 described later.
It is preferable to use a fitting portion 41 having no seam (split), but it is easy to fit the fitting portion 41 into the shaft member 10 by making a cut (split) in a part of the fitting portion 41. You may.

[Structure of pin 11]
As shown in FIG. 4, the pin 11 is located between the columnar body portion 11a, the two protrusions 11b erected in parallel facing the upper and lower surfaces of the body portion 11a, and the two protrusions 11b. It has an engaging recess 11c formed in. The width S2 of the engaging recess 11c is formed to be the same as the width S1 of the front end portion of the temple 2 (see FIG. 2B), and the distance H4 between the bottoms of the upper and lower engaging recesses 11c is the width H1 of the parallel portion 22. Is formed in the same way as. The pin 11 is preferably formed of a metal such as titanium or stainless steel.

[Structure of sleeve 12]
As shown in FIG. 5, the sleeve 12 externally fitted to the body portion 11a of the pin 11 has a main body portion 12a and flange portions 12b formed so as to project at both upper and lower ends of the main body portion 12a. The inner diameter L3 of the through hole 12c is formed to be the same as the outer diameter L2 of the body portion 11a of the pin 11, so that the body portion 11a can be fitted into the through hole 12c of the main body portion 12a.
The width H5 of the main body 12a having a concave shape is formed to be the same as the width H3 (see FIG. 1) of the fitting portion 41 of the wisdom 4, and the outer diameter L4 of the main body 12a is the fitting of the wisdom 4. It is formed to have the same inner diameter L1 as the joint portion 41, and the fitting portion 41 of the wisdom 4 can be fitted to the main body portion 12a.

The sleeve 12 is provided so that the fitting portion 41 can get over the flange portion 12b when the fitting portion 41 of the wisdom 4 is fitted into the concave main body portion 12a.
It is preferable that the material is slightly elastically deformed by the pressing force at the time of fitting.
The wall thickness of the sleeve 12 may be adjusted so that it can be elastically deformed, but the sleeve 12 is formed of resin for the viewpoint of such elastic deformation and the smooth rotation of the temple 2. preferable.
The appropriate step between the flange portion 12b and the main body portion 12a varies depending on the material, wall thickness, and other dimensions of the sleeve 12, but the fitting portion 41 of the wisdom 4 can be fitted into the concave main body portion 12a. As a dimension, for example, about 0.2 to 0.5 mm can be used as a guide.
When the sleeve 12 is made of a resin, an engineering plastic is preferable, and a polyacetal copolymer having lubricity and a low coefficient of friction (for example, trade name: Duracon) can be preferably used.

[Regulatory means]
The form of the regulating means for restricting the shaft member 10 from moving back and forth in the parallel portion 22 is not particularly limited. In this embodiment, as shown in FIG. 6A, a recess 2b which is an engaging portion is formed at least one of the upper side and the lower side of the parallel portion 22 of the fitting groove 21. Then, a tapered portion 12d as an engaged portion that can be fitted into the recess 2b is formed in the flange portion 12b of the sleeve 12 of the shaft member 10. A part of the flange portion 12b may be formed as the tapered portion 12d, or the tapered portion 12d may be formed on the engaged portion protruding from the flange portion 12b. As a guide, the inclined length of the tapered portion 12d is about 0.1 mm to 0.2 mm.
When the shaft member 10 is fitted into the parallel portion 22, the tapered portion 12d engages with the recess 2b, so that the front-rear movement of the shaft member 10 is restricted.

[Assembly of screwless hinges]
The temple 2, the wisdom 4, and the shaft member 10 having the above configuration can be assembled by the following procedure.
First, the fitting portion 41 of the wisdom 4 is fitted to the main body portion 12a of the sleeve 12. Since the sleeve 12 is made of an elastically deformable material such as resin, the fitting portion 41 is pressed from the outer peripheral side of the flange portion 12b to slightly reduce the diameter of the flange portion 12b, whereby the fitting portion of the wisdom 4 is formed. 41 gets over the flange portion 12b and is fitted onto the main body portion 12a.
Next, the body portion 11a of the pin 11 is fitted into the through hole 12c of the sleeve 12 to which the wisdom 4 is attached, and the shaft member 10 is assembled.
After that, the engaging recesses 11c between the protrusions 11b and 11b formed above and below the pin 11 are fitted above and below the opening 23a of the temple 2, and the shaft member 10 is pushed from the inclined portion 23 to the parallel portion 22.
By the above procedure, the assembly of the screwless hinge 1 that foldably connects the temple 2 to the wisdom 4 by the shaft member 10 is completed.

According to the screwless hinge 1 having the above configuration, the vertical swing of the temple can be effectively suppressed with a simple structure, the temple can be opened and closed stably, and the temple can be opened without welding. It is possible to obtain a screwless hinge for eyeglasses that does not swing back and forth and the temple does not easily come off the lens or rim.
Further, the shaft member 10 having the above configuration has an advantage that the shaft member 10 and the wisdom 4 can be easily connected and a strong connection can be obtained.

[Other Embodiments]
FIG. 7 shows another embodiment of the screwless hinge of the present invention. In FIG. 7, the same parts and members as those in the previous embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
In the screwless hinge 1'of this embodiment, a parallel groove 22'is formed at the front end of the temple 2', and the front end of the parallel groove 22'opens at the front end edge of the temple 2'.
The shaft member 10 is fitted into the parallel groove 22'from the opening of the front end edge of the temple 2', and the recesses 2b shown in FIG. 6 can be formed on the upper and lower inner edges of the parallel groove 22'. By engaging the tapered portion 12d of the shaft member 10 with the recess 2b, the shaft member 10 is fixed in the parallel groove 22'.
The screwless hinge 1'of this embodiment has an advantage that it is easy to assemble because it is only necessary to push the shaft member 10 into the parallel groove 22'until the tapered portion 12d engages with the recess 2b.

Although preferred embodiments of the present invention have been described, the present invention is not limited to the above description.
For example, in the above description, the shaft member 10 has been described as being composed of a pin 11 made of a metal such as titanium or stainless steel and a resin sleeve 12 externally fitted to the pin 11. And the sleeve 12 may both be formed of a metal or resin such as titanium or stainless steel, and the shaft member 10 may be integrally formed.

Further, in the above description, the fitting grooves 21 and 21'are formed on the temples 2 and 2'sides, and the annular fitting portion 41 is formed on the wisdom 4 side. An annular fitting portion may be formed on the ′ side, and a fitting groove may be formed on the wisdom 4 side.
Further, as for the regulating means, a protruding engaging portion may be formed on the temple 2, 2'side, and a concave engaged portion may be formed on the shaft member 10 side.

It is a figure explaining the whole structure of the screwless hinge of this invention, and is the enlarged view by the part of the screwless hinge. It is an enlarged view of the tip part of the temple to which the screwless hinge of this invention is applied. FIG. 3A is an enlarged view of the tip portion of the wisdom to which the screwless hinge of the present invention is applied, and FIG. 3B is a cross-sectional view taken along the line II of FIG. 3A. An explanatory view of the pins constituting the screwless hinge of the present invention is shown, (a) is a front view thereof, (b) is a side view thereof, and (c) is a plan view thereof. An explanatory view of a sleeve constituting the screwless hinge of the present invention is shown, (a) is a front view thereof, and (b) is a plan view thereof. It is a partially enlarged view which shows an example of the regulation means which regulates the anteroposterior movement of a shaft member in a fitting groove. It is a figure which shows the other embodiment of the screwless hinge of this invention, and is the enlarged view by the part of the screwless hinge.

1,1'Screwless hinge 11 Pin 11a Body 11b Protrusion 11c Engagement recess 12 Sleeve 12a Main body 12b Flange 12c Through hole 12d Tapered part (engaged part)
2,2'Temple 2a Lower part 2b Recess (engagement part)
21 Fitting groove 22, 22'Parallel part 23 Inclined part 23a Opening part 3 Front frame 4 Wisdom 41 Fitting part

Claims (3)

In a screwless hinge of eyeglasses having a fitting groove formed at the tip of a temple or wisdom, a shaft member fitted in the fitting groove, and wisdom or temple rotatably attached to the shaft member.
The fitting groove is formed so as to penetrate from one side surface of the temple or wisdom to the other side surface, extends in the same direction as the longitudinal axis of the temple or wisdom, and is an opening for fitting the shaft member. Has a parallel part in which the part is formed,
A concave engaging portion is formed on at least one of the upper side and the lower side of the parallel portion.
The shaft member is formed at the upper end and the lower end of the body portion to which the fitting portion formed at the tip of the wisdom or the temple is rotatably fitted, and the parallel portion is sandwiched from both side surfaces thereof. Engagement that is formed between the engagement recess that fixes the body portion in the fitting groove by engaging in the above manner and the engagement recess and the body portion, and engages with the engagement portion. Has a part and
When the shaft member is fitted into the parallel portion between the engaging portion and the engaged portion, the engaging portion and the engaged portion engage with each other, so that the shaft member is fitted. To configure regulatory measures to prevent movement in the groove,
A screwless hinge for eyeglasses featuring.
The screwless hinge of the spectacles according to claim 1 , wherein the fitting groove further has an inclined portion that is inclined from the parallel portion and opens to the side edge of the temple or the wisdom. The shaft member has a sleeve that is externally fitted to the body , and an annular fitting portion formed on the spectacles or the temple is externally fitted to the sleeve, and the sleeve is externally fitted to the body. The screwless hinge of the spectacles according to claim 1 or 2 , wherein the hinge is characterized by the above.

Images