JP3376340B2 - Glasses hinge structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge structure for eyeglasses in which a temple is pivotally attached to an armature so that the temple can be opened and closed (folded).

[0002]

2. Description of the Related Art In the conventional hinge structure of eyeglasses in which a temple is pivotably attached to an armature, a hinge piece is usually brazed to the rear end of the armature and the front end of the temple, and the hinge piece is bitten. They were combined and connected by a pivot.

[0003]

In such a conventional hinge structure, not only the cost of manufacturing the hinge piece is high, but also a brazing process which requires skill and is time-consuming is essential. There was a problem that the above work efficiency was poor, and there was a problem that cost rises.

Especially when a thin temple is targeted,
Along with that, there is a manufacturing difficulty such that a special small hinge piece having a small vertical width has to be manufactured, and there is a problem that the brazing is difficult because the brazing area is small. In addition, since the bearing portion of the hinge piece is thin, the root portion of the hinge piece is easily damaged and there is a problem that the hinge does not have sufficient strength.

In recent years, glasses such as titanium alloy, aluminum, and superelastic alloy that require brazing under a special atmosphere or require a special coating treatment prior to brazing have been used for spectacles. Since it has come to be used as a material for the brazing, there is a problem that the brazing requires high technology.

An object of the present invention is to provide a hinge structure for eyeglasses having a simple structure capable of solving the above problems.

[0007]

In order to solve the above problems, the present invention adopts the following means. That is, the hinge structure of the eyeglasses according to the present invention (hereinafter referred to as the hinge structure) is a hinge structure of eyeglasses in which a temple is pivotally attached to an endpiece so that the temple can be opened and closed. On the other hand, the front portion of the temple is provided with a folded-back portion that is folded back toward the rear of the temple, and the folded-back portion has a sandwiching portion that sandwiches the pivot shaft. Make the rear end of the folded piece a hook-shaped part,
The folded-back piece is elastically bent to fix the hook-shaped portion to the intermediate portion of the temple in a separable engagement state, whereby the folded-back portion is held in a closed state, and in this closed state, the sandwiching portion. Elastically clamps the axis,
It is characterized in that the temple can be opened and closed while the pivot is restrained by the sandwiching portion.

In the hinge structure, the front end portion of the folded portion has a C-shaped holding portion for holding the pivot, and the width of the opening of the C-shaped holding portion is defined by It is better to set it small so that the above can be prevented. Alternatively, the folded-back portion may have, at its intermediate portion, a sandwiching portion formed of a pair of curved portions that sandwiches the pivot from opposite sides, and the spacing between the curved portions at both ends prevents the pivot from slipping out. It is good to set it small so that you can. In each of the hinge structures, the pivot is
A circular annular groove that is continuous in the circumferential direction may be provided, and the sandwiching portion may elastically sandwich the pivot shaft in a state where the sandwiching portion is fitted in the annular groove.

[0009]

1 and 2, a hinge structure 1 according to the present invention has a temple 3 pivotally attached to an armature 2 so as to be openable and closable (foldable). As shown in FIGS. 2 to 4, at the rear end of the end piece 2, there is provided a columnar pivot shaft 5 whose axial center faces the up-down direction, and an upper portion of the pivot shaft 5 is continuous in the circumferential direction. A circular annular groove 6 is provided. An engaging portion 7 as a stopper piece is provided on the outer side portion of the peripheral surface of the pivot 5 so as to project obliquely rearward and bend upward at the tip.

Further, as shown in FIGS. 3 to 5, the front portion of the temple 3 is provided with a folded portion 8 which is folded back toward the rear of the temple, and the front end portion of the folded portion 8 is
It is a C-shaped holding portion 9 that holds the pivot 5 in a state of being fitted in the circular annular groove 6. The width L1 (FIG. 3) of the opening 10 of the C-shaped holding portion 9 is set to be small so as to prevent the pivot 5 from coming out. The rear end portion of the folded-back piece 11 to the rear of the folded-back portion 8 is formed as a hook-shaped portion 12, and the folded-back piece 11 is elastically bent to engage the hook-shaped portion 12 with the intermediate portion 13 of the temple. As shown in FIG. 5, the folded-back portion 8
Is held in a closed state. In this closed state, the sandwiching portion 9 elastically clamps the pivot 5 so that the temple 3 can be opened and closed with a certain hardness. The maximum opening angle of the temple is that the folding portion 8 has the engaging portion 7 as shown in FIG.
It is regulated by engaging in abutting state with.

The engaged state of the hook-shaped portion 12 can be released, and the temple 3 can be separated from the pivot 5 by this release. Therefore, the spectacle design can be changed by replacing the temple 3 with another type of temple having a different design, and the opening / closing hardness of the temple can be adjusted by deforming the folding portion 8 as required.

FIGS. 6 to 8 show another embodiment of the hinge structure 1 according to the present invention, in which the folded-back portion 8 has a pair of curved portions 15 for holding the pivot 5 from opposite sides at an intermediate portion thereof. , 15 having a holding portion 9. The intervals L2 and L3 at both ends of the curved portion 16 are set to be small so that the pivot 5 can be prevented from coming out. And similarly to the above, the rear end portion of the folded back piece 11 of the folded back portion 8 is a hook-shaped portion 12,
By elastically bending the folded-back piece 11 and engaging the hook-shaped portion 12 with the intermediate portion 13 of the temple, the folded-back portion 8 is held in a closed state as shown in FIG. There is. In this closed state, the sandwiching portion 9 elastically clamps the pivot 5 so that the temple 3 can be opened and closed with a certain hardness. Then, the maximum opening angle of the temple is regulated by the folded-back portion 8 engaging with the engaging portion 7 in a contact state as shown in FIG.

[Other Embodiments] (1) If the sandwiching portion of the folded-back portion holds the pivot shaft, if the sandwiching portion does not disengage from the pivot shaft due to the opening / closing operation of the temple, the circular shape is as described above. It is not necessary to fit the sandwiching part in the annular groove.

(2) Further, the shape of the sandwiching portion of the folded-back portion for sandwiching the pivot shaft is configured as the above-mentioned C-shaped sandwiching portion or the pair of curved portions. It is not specific to a thing, has one curved part,
It may also be configured as a gripping portion having a rectangular shape.

(3) The engaging portion that regulates the maximum opening angle of the temple may be configured as the stopper piece, or may be configured as various types that can regulate the opening angle. The engaging portion may be provided on the temple side, and the engaging portion may come into contact with the end piece to regulate the opening angle of the temple.

(4) Unlike the case of the above-mentioned embodiment, the folding piece 11 may be folded back outside the temple.

[0017]

The present invention has the following excellent effects. (1) According to the present invention, since the holding portion of the folded portion provided on the front side portion of the temple is configured to hold the pivot provided on the end piece, the conventional brazing process can be omitted, and the hinge can be omitted. The structure can be easily configured. Therefore, the hinge structure can be efficiently configured, and the hinge structure can be easily configured even when using a material such as titanium, aluminum, or a superelastic alloy that is difficult to braze. . Even when a temple is manufactured using a thin wire rod, the technical difficulty associated with brazing as in the past can be solved and the hinge structure with stable strength can be easily constructed. it can. As a result, it is possible to construct a slender temple having excellent design.

(2) When the folded-back portion is closed, the gripping portion elastically grips the pivot shaft, so that the temple can be opened and closed with a certain stiffness, and the temple is carelessly folded so that the temple or the lens rim The risk of damaging the lens can be avoided.

(3) In order to fix the hook-shaped portion forming the rear end of the folded-back piece to the rear of the folded-back portion to the intermediate portion of the temple in a separably engaged state, the folded-back portion is provided through the hook-shaped portion. The rear end of the piece can be easily and surely fixed to the intermediate portion. Further, the separation is easy, and the temple can be removed from the pivot by separating the temple. As a result, the temples can be exchanged, and the design of the spectacles can be changed. Further, the opening / closing stiffness of the temple can be adjusted by appropriately deforming the folded-back portion after the removal.

(4) When the holding portion of the folded-back portion is formed in a C shape or has a pair of curved portions, it is possible to easily achieve the restraint of the pivot in the holding portion.

(5) By adopting the structure in which the circular annular groove is provided on the pivot, it is possible to easily achieve a stable grasping state in which the grasping portion does not fall off the pivot.

[Brief description of drawings]

FIG. 1 is a perspective view showing spectacles having a hinge structure according to the present invention.

FIG. 2 is a perspective view showing a hinge structure according to the present invention.

FIG. 3 is an exploded perspective view thereof.

FIG. 4 is a sectional view of a pivot portion thereof.

FIG. 5 is a plan view thereof.

FIG. 6 is a perspective view showing another aspect of the hinge structure according to the present invention.

FIG. 7 is an exploded perspective view thereof.

FIG. 8 is a plan view thereof.

[Explanation of symbols]

1 Hinge structure 2 Yoroi 3 temples 5 Axis 6 annular groove 7 Engagement part 8 Folding part 9 Holding part 10 openings 11 Folded pieces 12 Hook 13 Middle part of temple 15 curved part

Claims (4)

(57) [Claims] 1. A hinge structure for eyeglasses in which a temple is pivotably attached to an armature so that the temple can be opened and closed. The armature is provided with a pivot shaft whose axial center faces in the vertical direction, while a front portion of the temple is a temple. The folded-back portion includes a folded-back portion that is folded back toward the rear, and the folded-back portion has a sandwiching portion that sandwiches the pivot shaft, and the rear end portion of the folded-back piece to the rear of the folded-back portion is a hook-shaped portion, The folded-back piece is elastically bent to fix the hook-shaped portion to the intermediate portion of the temple in a separable engagement state, whereby the folded-back portion is held in a closed state, and in this closed state, the sandwiching portion. Is elastically sandwiching the pivot, and the temple can be opened and closed while the pivot is restrained by the sandwiching portion. 2. A front end portion of the folded-back portion is a C-shaped holding portion that holds the pivot shaft, and a width of an opening of the C-shaped holding portion prevents the pivot shaft from coming out. 2. The size is set to be small.
The hinge structure of the glasses described. 3. The folded-back portion has, at an intermediate portion thereof, a sandwiching portion formed of a pair of curved portions that sandwiches the pivot from opposite sides, and a gap between the curved portions at both ends is
The hinge structure for eyeglasses according to claim 1, wherein the hinge structure is set to be small so as to prevent the pivot shaft from coming out. 4. The pivot has a circular annular groove continuous in the circumferential direction, and the nipping portion elastically nips the pivot while the nipping portion is fitted in the annular groove. The hinge structure for spectacles according to any one of claims 1 to 3.