JPH09325301A - Lens fixing mechanism of rimless spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens fixing mechanism of rimless spectacles which is extremely simple in constitution and is capable of surely fixing spectacle lenses without shaking. SOLUTION: The side edge of the lens 1 is provided with a fixing groove 10 having a constricted mouth part 11. A first rugged part 12 is molded at a fitting auxiliary piece to be arranged at the deep end face of this fixing groove 10. On the other hand, a fixing tenon 20 having a neck part 21 fittable to the constricted mouth part 11 is formed at a bridge 2 or end piece 3. A second rugged part 22 fittable to this first rugged part 12 is formed at the front end face of this fixing tenon 20. As a result, the fitting state of the fixing groove 10 of the lens 1 and the fixing tenon 20 of the bridge 2 or the end piece may be fixed by fitting the first rugged part 12 and the second rugged part 22 and, therefore, there is no need for installing a supporting piece to be pressed to the outer flank of the lens. The further simplification of the constitution and design characteristic is thus made possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens fastening mechanism for rimless spectacles, and more particularly to a lens fastening mechanism for rimless spectacles which has a remarkably simple structure and is capable of reliably fastening spectacle lenses without rattling. It is about.

[0002]

2. Description of the Related Art Recently, eyeglasses with a wide field of view, light weight, and refreshing design have been well received. In particular, bridge parts with nose pad and end pieces with ear temples are pivotally attached. The so-called "rimless eyeglasses" in which the rim surrounding the lens is eliminated by directly screwing and connecting the parts to a fastening hole formed near the periphery of the lens are very popular.

On the other hand, however, the rimless spectacles have a drawback that the screwed lens fastening portion is immediately rattled.

That is, in the conventional rimless spectacles, a support piece is attached to each of the bridge and the end piece parts to be screwed and connected, and the support piece is brought into contact with the side surface of the lens to securely fix the lens. However, since the structure of these rimless glasses is extremely simple, the bridge and end pieces themselves often deform due to the concentration of external force. The contact of the lens was insufficient, and the lens-fastened portion fixed with the screw was easily rattled.

Many rimless spectacles in the related art demand further simplification of the lens fastening portion from the viewpoint of design. In other words, in the conventional rimless spectacles, the presence of the support piece that ensures the above-mentioned lens fastening also impairs the simplicity of the design, which is a selling point of the rimless spectacles.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the conventional lens fixing mechanism for rimless spectacles, and has a remarkably simple structure and a further design. It is a technical object to provide a lens fastening mechanism for rimless spectacles that can improve the property and can securely fasten the spectacle lens without rattling.

In addition to the above problems, another technical object of the present invention is to provide a lens fastening mechanism for rimless spectacles which is simple to assemble and can provide rimless spectacles at low cost.

[0008]

In order to solve the above technical problems, the present invention provides a pair of left and right spectacle lenses 1, a bridge 2 to which these lenses 1 and 1 should be connected symmetrically, or an ear hook temple. A lens fastening mechanism for fastening and connecting an end piece 3 which pivotally supports 5 in a foldable manner, wherein a fastening groove 10 having a narrowed opening portion 11 is provided at a side edge of the lens 1 and the fastening is performed. A first concave-convex portion 12 is formed on at least the rear end surface of the groove 10 and at the end of the bridge 2 or the end piece 3 which faces the lens, is fitted into the narrowed opening 11 of the fastening groove 10. Forming the fastening hooks 20 and 30 having possible narrow neck portions 21 and 31, and at least the second concave and convex portions corresponding to the first concave and convex portions 12 on the lens-side tip surface of the fastening hooks 20 and 30. 22 and 32 are formed, and the bridge 2 or the end piece 3 is formed in the fixing groove 10 of the lens 1. A technique of fixing and fixing the lens 1 and the bridge 2 or the end piece 3 by inserting the fixing hooks 20 and 30 and fitting the first concave and convex portion 12 and the second concave and convex portions 22 and 32. Adopted the automatic means.

In order to solve the above technical problems, the present invention also provides a pair of left and right eyeglass lenses 1 and these lens 1
A lens fastening mechanism for fastening and connecting a bridge 2 to which 1 is to be connected symmetrically or an end piece 3 that pivotally supports an ear hook temple 5 in a foldable manner, and is narrowed to a side edge of the lens 1. The fastening groove 10 having the mouth portion 11 is provided, and the fitting assisting piece 4 having the first concave-convex portion 42 facing the narrowed mouth portion 11 on the side surface is arranged on the inner end surface of the fastening groove 10 in the groove. On the other hand, the fixing hook 20 having narrow neck portions 21 and 31 which can be fitted into the narrowed opening portion 11 of the fixing groove 10 at the lens facing portion of the end portion of the bridge 2 or the end piece 3 while being provided. .30 and the second concavo-convex portions 22 and 32 corresponding to the first concavo-convex portion 42 of the fitting assisting piece 4 are formed on at least the lens-side tip surface of the fastening hooks 20 and 30. The fixing groove 20 or 30 of the bridge 2 or the end piece 3 is inserted into the fixing groove 10 of the fitting groove 10 and is fixed to the first uneven portion 12 of the fitting assisting piece 4. By fitting the second concavo-convex portions 22 and 32 of the wearing hooks 20 and 30 into the lens 1
The technical means of fixing and fixing the bridge 2 and the end piece 3 to each other was adopted.

Further, in order to solve the above-mentioned problems, the present invention, in addition to the above-mentioned means, at least on the front surface of the fastening hooks 20 and 30, the fastening hooks 20 and 30 and the fastening groove 10 are provided. While the cover portions 23 and 33 capable of covering the insertion fitting portion are formed, the hooking head portion 41 is formed at the eyepiece side end of the fitting assisting piece 4 arranged on the groove inner end surface of the fastening groove 10. I adopted the means.

Further, in order to solve the above-mentioned problems, the present invention provides, in addition to the above-mentioned means, the hooking head 41 at the eyepiece side end of the fitting assisting piece 4 and the eyepiece surface of the lens 1 as necessary. We adopted the technical means of forming it by taking it out in the shape of a brim so that it can be hung on.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings. 1 is a partial perspective view of rimless glasses to which the lens fastening mechanism of the first embodiment according to the present invention is applied, and FIG. 2 is an exploded perspective view showing the lens fastening mechanism (bridge portion) of the first embodiment, FIG. 3 is an exploded perspective view showing the lens fastening mechanism (end piece portion) of the first embodiment, and FIG. 4 is a partial cross-sectional view illustrating the lens fastening state of the lens fastening mechanism (end piece portion) of the first embodiment. Figure,
Fig. 5 shows the same lens fastening mechanism as the eyepiece side of the lens (back side of the lens).
FIG. 6 is a partial cross-sectional view for explaining the lens fastening state of the lens fastening mechanism (end piece portion) of the second embodiment according to the present invention, and FIG. 7 is a lens fastening mechanism for the same. FIG. 8 is a partial cross-sectional view seen from the eyepiece side (back side of the lens), and FIG. 8 is a partial cross-sectional view of a modified embodiment of the lens fastening mechanism.

First Embodiment First, the lens fastening mechanism of the first embodiment will be described with reference to FIGS. In the figure, what is designated by reference numeral 1 is a pair of left and right spectacle lenses, and lateral side fastening grooves 10 for fastening the lenses are provided on the side edge portions thereof. The fastening groove 10 has narrowed mouth portions 11 with narrow groove intervals formed at the groove edges and forms a dovetail groove as a whole in the illustrated example, and a serrated first groove is formed on the inner end surface of the groove. One uneven portion 12 is formed.

In FIG. 2, what is designated by reference numeral 2 is a bridge made of a synthetic resin material, in which a pair of nose pad pads 6 and 6 are vertically provided and the lenses 1.1 are to be connected symmetrically. At both ends of the lens 2 facing the lens, fastening hooks 20, 20 for fastening the lens are formed. Each fastening hook 20
At the root portion thereof, there is a narrow neck portion 21 which can be fitted into the narrowed opening portion 11 of the fastening groove 10, and in the example shown in the figure, it forms a dovetail shape as a whole. At the lens end of
A sawtooth-shaped second uneven portion 22 corresponding to the first uneven portion 12 is formed. A cover portion 23 having a larger area than that of the fastening hook 20 is formed on the front surface of the fastening hook 20.

In FIG. 3, the reference numeral 3 is an end piece made of a synthetic resin material that foldably supports the ear hook temple 5 and is fixed to the outside of each of the lenses 1 and 1. At the end of the end piece 3 facing the lens, a fastening hook 30 for fastening the lens is formed. This fastening hook 30 also has a narrowed mouth portion of the fastening groove 10 at its root portion.
In the illustrated example, it has a narrow neck portion 31 that can be fitted into the connector 11 and is formed into a dovetail shape as a whole, and the end of the fastening hook 30 on the lens side corresponds to the first uneven portion 12. A second sawtooth-shaped second concave-convex portion 32 is formed. Further, a cover portion 33 having an area larger than that of the fastening hook 30 is formed on the front surface of the fastening hook 30 in a so-called end-joint type integrally with the end piece body.

The fixing hooks 20 and 30 provided on the bridge 2 and the end piece 3 are respectively inserted into the fixing grooves 10 of the lens 1 to form the second concave and convex portions 22 and 32 of the fixing hooks 20 and 30. And fastening groove
By fitting the first concavo-convex portion 12 of 10 to the pair of left and right lenses 1.1, the bridge 2, and the end piece 3.3.
The rimless glasses can be easily configured (see FIG. 1).

As described above, in the lens fastening mechanism according to the present embodiment, the narrowed mouth portion 11 is formed at the groove edge of the fastening groove 10, and the fastening hook 20 or 20 is formed in the narrowed mouth portion 11. Since the narrow neck portions 21 and 31 formed at the base portion of 30 are inserted and fitted, it is not necessary to attach a support piece to be brought into contact with the lens side surface to the bridge 2 and the end piece 3 unlike the conventional product. The rimless spectacles with excellent design can be provided because the lens fastening mechanism can be greatly simplified and the support piece does not impair the simplicity of the design, which is the biggest selling point of rimless spectacles. You can

Moreover, the state in which the fixing groove 10 and the fixing groove 20/30 are inserted and fitted is such that the first concave / convex portion 12 of the fixing groove 10 and the fixing groove 20/30.
Since it will be securely fixed by fitting with the second concave and convex portions 22 and 32 of 30, while wearing the eyeglasses, this fastening groove
The fixing hooks 20 and 30 do not come off or come loose from the 10 and secure and stable lens fixing is possible, and since the fixing screw is completely unnecessary, the head of this fixing screw is the same as the conventional product. Does not hurt the appearance of the rimless glasses or hinder the visibility.

Further, in this embodiment, the fastening hook 20
Since the cover portions 23 and 33 are provided on the front surface of 30, the fixing groove can be formed by the cover portions 23 and 33 in this lens fixed state.
It is possible to cover and hide the insertion portions of the 10 and the fastening hooks 20 and 30 (see FIGS. 4 and 5), and the insertion portions do not spoil the appearance of the rimless glasses.

Furthermore, in this embodiment, the fastening groove
The first concavo-convex portion 12 of 10 is formed in a sawtooth shape inclined only in the front direction of the glasses, and the second concavo-convex portion 22 of the fastening hook 20/30 is formed.
On the contrary, 32 is formed into a sawtooth shape that is inclined only in the eyepiece direction,
Moreover, since the cover portions 23 and 33 are formed on the front surface of the fastening hooks 20 and 30 as described above, as shown in FIGS. 2 and 3, when the lens fastening work is performed, the fastening hooks 20 and 30 are fixed. If the fitting groove 10 is inserted from the front of the eyeglasses, the cover portions 23, 33
Comes into contact with the front surface of the lens 1 and plays a role of a stopper (see FIGS. 4 and 5), so that the lens fastening operation becomes easier. It is possible to reduce the manufacturing cost and provide inexpensive rimless spectacles.

[Second Embodiment] The lens fastening mechanism of the second embodiment shown in FIGS. 6 and 7 has a first concave-convex portion on the lens side to be fitted to the second concave-convex portion of the bridge or the end piece. The point is that it is not formed directly on the groove inner end surface of the lens fixing groove as in the first embodiment, but is formed on the fitting auxiliary piece 4 made of a synthetic resin material that is arranged on the groove inner end surface of the fixing groove 10. It has the greatest feature. Then, the configuration is the same as that of the first embodiment except that the end piece component is formed of a metal material.
Hereinafter, the lens fastening mechanism of this embodiment will be described in detail by taking the end piece portion as an example.

The fitting assisting piece 4 in this embodiment is formed of a synthetic resin material in a substantially plate shape, and the end portion on the eyepiece side is a collar so as to be brought out onto the eyepiece surface (back surface) of the lens 1. While a hook-shaped head 41 is projected, this hook-shaped head 41
41 The second uneven portion 32 of the end piece 3 is provided on the opposite side of the plate.
A first concave-convex portion 42 that can be fitted to is formed.

The fitting assisting piece 4 is arranged on the rear end surface of the fastening groove 10 of the lens 1, and the hooking head 41 of the fitting auxiliary piece 4 is hooked on the eyepiece surface of the lens 1. By inserting the fastening hook 30 of the end piece 3 from the front of the eyeglasses, the first uneven portion 42 of the fitting assisting piece 4 and the second uneven portion 22 of the fastening hook 30 are inserted.
And are fitted to each other to securely connect the lens 1 and the end piece 3 together.

As described above, in the present embodiment, it is not necessary to directly form the second concave and convex portion on the groove end surface of the fastening groove 10 having the narrowed opening portion 11, so that lens processing can be easily performed. It is possible to provide more inexpensive rimless glasses.

Further, in the present embodiment, in the lens fixed state, a brim-shaped hooking head formed on the end of the fitting assisting piece 4.
Since 41 is hooked on the eyepiece surface (rear surface) of the lens and the cover portion 33 formed on the front surface of the fixing hook 30 is hooked on the front surface of the lens, the fitting assisting piece 4 is fixed to the fixing groove 10. Even if it is not adhered and fixed to the inner end surface of the groove by an adhesive or the like, reliable and stable lens fastening can be performed, and fastening work can be easily performed.

Furthermore, in this embodiment, since the fitting assisting piece 4 is made of a synthetic resin material, even if the end piece 3 is made of a metal material, the elastic deformation of the fitting assisting piece 4 is utilized. By doing so, the lens fastening operation can be easily performed. Further, in the lens-fixed state, the elastically deformable fitting auxiliary piece 4 absorbs the external force applied to the spectacles, so that it is possible to provide the rimless spectacles which are free from lens breakage and have high durability. . Of course, the end piece 3 may be made of a synthetic resin material.

The present invention has been described above by taking the first embodiment and the second embodiment as examples, but the present invention is not limited to these embodiments, and various modifications are made within the scope of the claims. Is possible.

For example, in the first embodiment, the fastening groove 10 having the narrowed opening 11 on the groove edge is formed into a dovetail-shaped (trapezoidal) dovetail groove, but of course the invention is not limited to this. Instead of one, as shown in FIG. 7, it is possible to form a dovetail in which only one groove edge portion is inclined, or to form the entire fastening groove 10 in a round groove shape. The fastening groove 10 only needs to have a groove width of the narrowed opening portion 11 smaller than other portions, and various modifications can be made in consideration of design and the like.

Further, the first uneven portion 12, 42, and the second uneven portion
The shapes of 22 and 32 are by no means limited to the saw-tooth shape described above.
It is possible to form various uneven shapes within a range in which 30 can be prevented from coming off.

Furthermore, in the above second embodiment,
The hooking head portion 41 of the fitting assisting piece 4 disposed in the fastening groove 10 is formed in a brim shape which is taken out on the eyepiece surface of the lens, but is not limited to this, for example, as shown in FIG. As in the embodiment shown in FIG. 3, a lens in which the hooking head 41 'is formed in a wedge shape, and the fitting assisting piece 4 having the wedged hooking head 41' is inclined to the eyepiece side in a taper shape. The lens may be fixed so that it is hooked on the deep end surface of the fixing groove. Needless to say, it is also within the technical scope of the present invention to fix the fitting assisting piece 4 to the groove inner end surface of the fastening groove 10 by using an adhesive or the like without providing the hooking head. Absent.

[0031]

As described above with reference to the embodiments, in the lens fastening mechanism for the rimless spectacles of the present invention, the fastening groove having the narrowed mouth portion is formed at the edge portion of the lens, while the bridge is formed. Alternatively, since the fastening hook having the neck portion that can be fitted to the narrowed mouth portion is formed at the tip of the end piece, it is possible to attach a support piece to be brought into contact with the lens side surface unlike the conventional product, It is possible to securely and securely connect the spectacle lens and the bridge or the end piece without rattling.

In addition, the first concave and convex portion is formed on at least the rear end surface of the fixing groove or on the fitting auxiliary piece to be arranged on the rear end surface, while the first concave and convex portion is formed on at least the lens side tip of the fixing hook. Since the second concavo-convex portion that can be fitted to the lens fitting portion is provided, the fitted state of the fastening groove and the fastening hook can be reliably fixed, and the lens fastening portion can be used while using the glasses. It is possible to provide durable, stable, and durable rimless glasses that do not rattle.

Further, in the lens fastening mechanism of the rimless spectacles of the present invention, it is not necessary to attach a support piece for securely fastening the lens as described above, and therefore, unlike the conventional product, this support piece is used. It is possible to achieve further simplification of the configuration and the design without the existing design impairing the simplicity of the design, which is a selling point of the rimless glasses.

[Brief description of drawings]

FIG. 1 is a partial perspective view of rimless glasses to which a lens fastening mechanism of a first embodiment is applied.

FIG. 2 is a lens fixing mechanism (bridge portion) according to the first embodiment.
It is an exploded perspective view showing.

FIG. 3 is an exploded perspective view showing a lens fastening mechanism (end piece portion) of the first embodiment.

FIG. 4 is a partial cross-sectional view illustrating a lens fastening state of the lens fastening mechanism (end piece portion) of the first embodiment.

FIG. 5 is a partial cross-sectional view of the lens fastening mechanism of the first embodiment as seen from the lens eyepiece side (lens back side).

FIG. 6 is a partial cross-sectional view illustrating a lens fastening state of a lens fastening mechanism (end piece portion) according to the second embodiment of the present invention.

FIG. 7 is a partial cross-sectional view of the lens fastening mechanism of the second embodiment as seen from the lens eyepiece side (lens back side).

FIG. 8 is a partial cross-sectional view of a modified example of the lens fastening mechanism of the second embodiment.

[Explanation of symbols]

 1 Lens 10 Fastening Groove 11 Narrow Port 12 First Irregularity 2 Bridge 20 Fastening Recess 21 Neck 22 Second Irregularity 23 Cover Part 3 Endpiece 30 Fastening Recess 31 Neck 32 Second Irregularity 33 Cover Part 4 Fitting auxiliary piece 41 Hooking head 42 First uneven part 5 Ear hanging temple 6 Nose pad

Claims (4)

[Claims] 1. A lens for fixedly connecting a pair of left and right spectacle lenses 1, a bridge 2 to which these lenses 1 and 1 should be connected symmetrically, or an end piece 3 for pivotably supporting an ear hanging temple 5. A fastening mechanism, in which a fastening groove 10 having a narrowed opening portion 11 is provided on a side edge of the lens 1, and a first concave-convex portion 12 is formed on at least a rear end surface of the fastening groove 10 in the groove. On the other hand, a fastening hook 20/30 having a narrow neck portion 21/31 that can be fitted into the narrowed opening 11 of the fastening groove 10 at the lens facing portion of the end portion of the bridge 2 or the end piece 3. Forming and fixing this
Of the second concave / convex portion 22/32 corresponding to the first concave / convex portion 12 on at least the lens-side tip surface of the bridge 1 or the fixing groove 20/30 of the end piece 3 in the fixing groove 10 of the lens 1. By inserting and fitting the first concave-convex portion 12 and the second concave-convex portions 22 and 32, the lens 1
A lens fastening mechanism for rimless spectacles, characterized in that the bridge and the end piece 3 are fastened and fixed. 2. A pair of left and right spectacle lenses 1, a bridge 2 to which these lenses 1 and 1 are to be connected symmetrically, or an end piece 3 for rotatably supporting an ear hanging temple 5.
A lens fastening mechanism for fastening and connecting and, wherein a fastening groove 10 having a narrowed opening portion 11 is provided on a side edge of the lens 1, and a narrow end portion in the groove of the fastening groove 10 is provided. Constriction
Fitting assisting piece 4 having a first uneven portion 42 facing 11 on its side surface
And a narrow neck portion (21, 31) that can be fitted into the narrowed opening portion (11) of the fastening groove (10) at the lens facing portion of the end portion of the bridge (2) or the end piece (3). Hozo 20
30 is formed, and at the same time, at least on the lens-side tip surface of the fastening hooks 20 and 30, second concave and convex portions 22 and 32 corresponding to the first concave and convex portions 42 of the fitting assisting piece 4 are formed. The fixing groove 20 or 30 of the bridge 2 or the end piece 3 is inserted into the fixing groove 10 to insert the first concave / convex portion 12 of the fitting auxiliary piece 4 and the second concave / convex portion 22/32 of the fixing groove 20/30. A lens fastening mechanism for rimless spectacles, characterized in that the lens 1 and the bridge 2 or the end piece 3 are fastened and fixed by fitting and. 3. A cover part (23, 33) is formed on at least a front surface of each of the fastening hooks (20, 30) so as to be able to cover an insertion portion between the fastening hooks (20, 30) and the fastening groove (10), while the fastening groove is formed. 3. The lens fastening mechanism for rimless spectacles according to claim 2, wherein a hooking head portion 41 is formed at the eyepiece side end of the fitting assisting piece 4 disposed on the inner end surface of the groove 10. 4. A hooking head at an eyepiece side end of the fitting assisting piece 4.
4. The lens fastening mechanism for rimless spectacles according to claim 3, wherein 41 is carried out and formed in a brim shape so that it can be hooked on the eyepiece surface of the lens 1.