JP2000089169A - Spectacle lens fixing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide fixing sleeve parts of spectacle lenses capable of surely fixing these lenses with extremely simple constitution without using screws at all and a lens fixing mechanism of rimless spectacles using these fixing sleeve parts. SOLUTION: The fixing sleeve parts 3 which have collar parts 31 at their base ends and are formed with detaining projection 32 at the front ends on the cylindrical outer peripheries are inserted into fixing holes 11 bored near the peripheral edges of the lenses 1. These collar parts 31 are pressed to the lens faces and simultaneously the detaining projection 32 are detained at the edges of the fitting holes 11. Spigot projections 31 formed in the lens-facing parts of end pieces 4 or a bridge 5 are fitted in a tight fitting state into the insertion holes 30 of the fixing sleeve parts 3, by which the lenses 1 and the end pieces 4 or the bridge 5 are fixed and connected. Since the screws are not used, the clattering of the lenses by loosening of the screws, etc., does not occur.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle lens fixing mechanism, and more particularly to a spectacle lens fixing mechanism capable of securely fixing a lens with an extremely simple structure without using screws.

[0002]

2. Description of the Related Art Recently, spectacles having a wide field of view, light weight, and a clear design are gaining popularity. In particular, bridge parts for connecting a pair of lenses symmetrically and ear temples are freely foldable. The so-called "rimless glasses", which eliminates the need for a rim surrounding the lens by directly screwing and connecting an end piece part pivotally supported to a lens to a fastening hole formed near the periphery of the lens, are very popular.

However, conventional rimless glasses include:
There is a problem that the part that is inserted into the fixing hole and screwed is immediately loosened due to loosening or wear of the screw. Further, in the conventional rimless glasses, a support piece is attached to each of the bridge component and the end piece component to be screwed and connected, and the support piece is brought into contact with the lens side face to prevent the rotational displacement of the screw portion. Although the rimless glasses have a very simple structure, bridges and end pieces are often deformed due to the concentration of external force, and such support parts and the side of the lens are deformed by such deformation of the parts. The contact state was insufficient, and the screwed lens fixing portion was easily loosened.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned disadvantages of the conventional method for fixing a lens of rimless spectacles, and is extremely simple without using any screws. It is a technical object of the present invention to provide a spectacle lens fixing mechanism that can securely fix a lens with the configuration and that can perform the lens fixing operation extremely easily.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, the present invention provides a lens 1 having a pair of fastening holes 10 near the periphery thereof; a lens of an end piece 4 or a bridge 5. A coupling component to be mounted on the facing portion,
A joint part 2 having a pair of parallel insertion pins 21 and 21 each having at least one fitting projection 21a formed therearound; and an insertion hole 30 into which the insertion pin 21 of the joint part 2 can be inserted. A pair of cylindrical bodies 31 each having
31 are connected by a bridging member 32, and each cylindrical body 31
And a connecting sleeve part 3 made of synthetic resin having a locking projection 31a formed at least at the end of the outer periphery of the connecting sleeve.
Into the fixing hole 10, and the locking projection 31a is inserted into the fixing hole 10.
The insertion pin 21 of the joint part 2 is inserted into the insertion hole 30 of each tubular body 31 of the connecting sleeve part 3 and the leading end of the tubular body 31 The technical means of fastening the lens 1 and the end piece 4 or the bridge 5 by inserting the lens 1 into the fitting state from the side was adopted.

[0006] In order to solve the above-mentioned problems, the present invention provides, in addition to the above means, if necessary, a connecting sleeve part 3.
The technical means that the slit 31b is formed in the cylindrical body 31 in the longitudinal direction is adopted.

Furthermore, in order to solve the above-mentioned problems, the present invention further comprises, if necessary, at least one insertion pin of the joint part 2 formed by reciprocatingly bending a wire. The technical means that the joint part 2 is constituted by a continuous wire is adopted.

[0008]

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 front view of rimless spectacles assembled by applying the eyeglass lens fixing mechanism of the present embodiment, FIG. 2 is a partial side view of the rimless spectacles, and FIG. 3 is a spectacle lens fixing mechanism of the present embodiment. FIG. 4 is an enlarged perspective view of the connecting sleeve part 3 of the spectacle lens fixing mechanism of the present embodiment, and FIG. 5 is a partially enlarged cross-sectional view showing a fixing work process of the spectacle lens fixing mechanism of the present embodiment. , FIG.
FIG. 7 is a partially enlarged sectional view showing a fastening state of the eyeglass lens fastening mechanism of the present embodiment, and FIG. 7 is a partially enlarged sectional view showing a fastening work process of the eyeglass lens fastening mechanism of the modified example according to the present invention. .

The eyeglass lens fastening mechanism of the present embodiment is shown in FIG.
As shown in FIG. 2, the end pieces 4.4, to which the temples 7 are foldably connected via hinges 6, are fixed to the outer edges of the pair of left and right lenses 1.1, and are not shown. A bridge 5 having a nose pad is attached to each inner edge of a pair of left and right lenses 1.1.

In the drawing, the one designated by the reference numeral 1 is a spectacle lens made of synthetic resin. Near the outer edge and the inner edge of the lens 1, a pair of two vertically arranged fastening holes 10 are provided.
・ 10 are established.

In the figure, what is indicated by reference numeral 2 is a metal joint part mounted on the lens facing portion of the end piece 4 and the lens facing portion at both ends of the bridge 5 respectively. As shown in FIG. 3, the joint component 2 of the present embodiment includes a pair of parallel insertion pins 21 and 21 having a plurality of fitting projections 21a and 21a. It comprises a connecting portion 22 for connecting the pins 21 and a take-out portion 23 connected to the end piece 4 or the bridge 5.

In the figure, what is indicated by reference numeral 3 is a connecting sleeve part made of a synthetic resin which is elastically deformable and flexible, and is provided with an insertion hole 30 into which the insertion pin 21 of the joint part 2 can be inserted. The pair of cylindrical bodies 31
Are connected. As shown in FIG. 4, a plurality of locking projections 31a to be locked to the edge of the fastening hole 10 on the front surface side of the lens are provided on the distal end side of the outer circumference of each cylindrical body 31. Are formed, and a slit 31b is formed in each cylindrical body 31 in the longitudinal direction.

In the eyeglass lens fixing mechanism of the present embodiment, the cylindrical body 31 of the connecting sleeve part 3 is inserted into the fixing hole 10 of the lens 1 while the slit 31b is being contracted. Side, the bridging member 32 is brought into contact with the rear surface (eyepiece surface) of the lens, and
By locking any one of 31a to the edge of the fastening hole 10 on the front side of the lens, which is on the opposite side of the insertion,
The connecting sleeve part 3 is fixed to the fixing holes 10 (see FIG. 5), and then the insertion pin 21 of the joint part 2 is inserted into the insertion hole 30 of each tubular body 31 of the connecting sleeve part 3. The lens 1 is securely fastened to the end piece 4 and the bridge 5 by being inserted in a tightly fitted state from the distal end side of the tubular body 31 using the fitting protrusions 21a.
reference).

As described above, in the eyeglass lens fixing mechanism of the present embodiment, the joint component is inserted into the insertion holes 30 of the coupling sleeve component 3 inserted and fixed into the fixing holes 10 of the lens 1. Just insert the two insertion pins 21 and 21 tightly,
Since the lens can be securely fixed without using any screws, there is no fear of loosening of the screw due to vibration or the like unlike conventional products, and a reliable lens fixing without rattling over a long period of time is possible. .

Moreover, each tubular body 31 of the connecting sleeve part 3
Are formed on the peripheral surface of the connecting sleeve part 3 into which the respective cylindrical bodies 31 are inserted into the fixing holes 10 of the lens 1. The connecting sleeve parts 3 are securely stopped by the locking projections 31a. As shown in FIG. 5, when inserting the insertion pins 21 of the joint component 2 into the insertion holes 30 of the connecting sleeve component 3 in a tightly fitted state, as shown in FIG. However, the connecting sleeve part 3 does not come out of the fastening hole 10,
The lens fixing operation can be performed very easily.

The connecting sleeve part 3 of the present embodiment
Are formed of a flexible synthetic resin material, and a plurality of locking projections 31a are formed on the distal end side of each tubular body 31, so that even if the thickness of the lens 1 changes, Of the fastening hole 10 can be locked by any one of the locking projections 31a, 31a,. The edge of the fastening hole 10 is not locked at all, and the remaining locking projection on the tip side may be cut off as shown in FIG.

Further, in the eyeglass lens fixing mechanism of the present embodiment, as described above, the locking projection 31a of each cylindrical body 31 is provided.
As a result, the connecting sleeve component 3 can be securely fixed to the fastening hole 10, so that at least the thickness of the locking projection 31a reliably serves as a spacer between the joint component 2 and the lens surface. It is possible to reliably maintain a predetermined distance between the lens 2 and the lens surface. Therefore, for example, it is possible to prevent a problem that the connecting portion 22 or the take-out portion 23 of the joint component 2 comes into contact with the lens surface and damages the lens surface due to an external force or impact applied to the glasses.

Furthermore, in the eyeglass lens fastening mechanism of the present embodiment, since each tubular body 31 of the connecting sleeve part 3 also serves as a washer in the fastening hole 10, it is fastened by external force or impact. There is no problem that a lens defect easily occurs in a portion.

Although the embodiment, which is a specific example of the present invention, is generally configured as described above, the present invention is not limited to this embodiment, and various modifications may be made within the description of the appended claims. Changes are possible. For example, as shown in FIG.
At least one insertion pin 21 ′ of the joint part 2 is
If the wire is formed by reciprocatingly bending the wire and the joint part 2 is formed of a continuous wire, it is not necessary to perform costly and troublesome brazing, and the rimless glasses are provided at a lower cost. It is possible to do.

Further, in the above embodiment, a plurality of ring-shaped fitting projections 21a are provided around the entire periphery of each insertion pin 21, but the present invention is not limited to this. As long as it can be inserted into the insertion hole 30 of each tubular body 31 of the sleeve part 3 and can be fixed in the insertion hole 30, the number, position, shape, etc. of the fitting projections 21a can be variously changed. It is possible, for example, as shown in FIG.
May be partially provided with a fitting projection 21a 'around the periphery. This is the same for the locking projections 31a of each tubular body 31 of the connecting sleeve part 3, and the fixing holes of the lens 1
As long as it can be inserted into 10 and the edge of the lens 1 can be locked, various design changes can be made to the number, position, shape, and the like of the locking projections 31a.

[0021]

As described above with reference to the embodiments, in the eyeglass lens fastening mechanism according to the present invention, a pair of fastening holes are opened in the lens, and the connecting sleeve component inserted into these fastening holes. By simply inserting the insertion pin of the joint part into the insertion hole of each tubular body in a tight fit, the lens can be securely fastened without using any screws. There is no fear of loosening, and the lens can be securely fixed without rattling for a long period of time.

Further, since the connecting sleeve component can be securely fixed to the fixing hole by the locking projection formed on the peripheral surface of each cylindrical member of the connecting sleeve component, the insertion of each cylindrical member of the connecting sleeve component can be performed. When the insertion pin of the joint component is inserted into the hole in a tightly fitted state, the lens fixing operation can be performed extremely easily without the connecting sleeve component coming out of the fixing hole.

[Brief description of the drawings]

FIG. 1 is a partial front view of rimless spectacles assembled by applying the spectacle lens fastening mechanism of the present embodiment.

FIG. 2 is a partial side view of the rimless glasses.

FIG. 3 is an exploded perspective view of the eyeglass lens fastening mechanism of the embodiment.

FIG. 4 is an enlarged perspective view of a connecting sleeve part 3 of the eyeglass lens fastening mechanism of the present embodiment.

FIG. 5 is a partially enlarged cross-sectional view showing a fastening step of the eyeglass lens fastening mechanism of the embodiment.

FIG. 6 is a partially enlarged cross-sectional view illustrating a fastening state of the eyeglass lens fastening mechanism of the embodiment.

FIG. 7 is a partially enlarged cross-sectional view illustrating a fastening operation process of an eyeglass lens fastening mechanism according to a modified example of the invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lens 10 Locking hole 2 Joint part 21 Insertion pin 21a Fitting projection 3 Connecting sleeve part 30 Insertion hole 31 Cylindrical body 31a Locking projection 31b Cut slit 32 Cross-linking member 4 End piece 5 Bridge

Claims (3)

[Claims] 1. A lens 1 having a pair of fastening holes 10 near the periphery thereof; and a coupling component to be mounted on a lens facing portion of an end piece 4 or a bridge 5, wherein at least one coupling component is provided around the lens. A joint part 2 having a pair of parallel insertion pins 21 and 21 each having a fitting projection 21a formed thereon; and a pair of insertion parts 30 each having an insertion hole 30 into which the insertion pin 21 of the joint part 2 can be inserted. And a connecting sleeve part 3 made of a synthetic resin and having a locking projection 31a formed at least at the end of the outer periphery of the cylindrical body of each cylindrical body 31. Each cylindrical body 31 of the connecting sleeve part 3 is inserted into the fixing hole 10 of the lens 1, and the locking projection 31 a is locked to the edge of the fixing hole 10 on the side opposite to the insertion. And the insertion hole 3 of each tubular body 31 of the connecting sleeve part 3 Eyeglasses, wherein the lens 1 and the end piece 4 or the bridge 5 are fastened by inserting the insertion pin 21 of the joint part 2 into the cylindrical member 31 in a tightly fitted state from the distal end side thereof. Lens fastening mechanism. 2. The eyeglass lens fastening mechanism according to claim 1, wherein a cut slit 31b is formed in the cylindrical body 31 of the connecting sleeve part 3 in the longitudinal direction. 3. At least one insertion pin of the joint part 2 is formed by reciprocally bending a wire.
The eyeglass lens fastening mechanism according to claim 1, wherein the joint part 2 is formed of a continuous wire.