JP2000047142A - Lens mounting structure for frameless glasses - Google Patents

Abstract

(57) [Problem] To use a male screw element and a nut element to fix a lens to one or both of a brim and a bridge of frameless eyeglasses, and to clean the lens with a piece of cloth or the like. The piece of cloth should not be caught on the nut element. A male screw element (12) protruding from a predetermined location is provided on one or both of a yoke (10) and a bridge, and an insertion hole (16) for inserting a male screw is provided at a predetermined location on the lens. Either one or both of the yoke and the bridge are screwed to the male screw element on the second lens surface (F2) opposite to the first lens surface (F1) applied to the lens (L). A recess (18) for receiving a nut element is formed for the insertion hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens mounting structure for frameless spectacles, and more particularly to a lens mounting structure for fixing a lens to one or both of a yoke and a bridge of frameless spectacles.

[0002]

2. Description of the Related Art In recent years, spectacles using plastic lenses are often used as frameless spectacles in order to further increase their lightness. In this case, either one or both of a lens and a bridge are used as lenses. It is necessary to attach it directly to Conventionally, such mounting methods are roughly classified into two, one of which is a mechanical mounting method using a male screw element and a nut element, and the other is a chemical mounting method using an adhesive or the like. How to attach.

[0003] In the case of a mechanical mounting method using a male screw element and a nut element, over-the-counter processing in an eyeglass store is possible, and a customer can immediately obtain necessary spectacles. It has been pointed out that when the lens surface is wiped with a piece of cloth or the like for cleaning the lens, the piece of cloth is caught on a nut element or the like.

[0004] Such a problem can be solved by a chemical mounting method using an adhesive or the like, but since the mounting method cannot be performed at a store, it is left to the eyeglass manufacturer. Therefore, there is a problem that the customer has to wait several days before obtaining the glasses. In addition, it has been pointed out that in the case of a chemical mounting method using an adhesive or the like, even if a temple or a bridge is damaged, it cannot be repaired at a store, and furthermore, depending on the state of the damage, it can be repaired Problems like disability can also occur. In the case of a mechanical mounting method using a male screw element and a nut element, repair at a store is easy and replacement of a temple or a bridge is possible as long as the lens itself is not damaged.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lens mounting structure for fixing a lens to one or both of a brim and a bridge of frameless glasses by using a male screw element and a nut element. Accordingly, it is an object of the present invention to provide a lens mounting structure which is configured so that when the lens surface is wiped with a piece of cloth or the like for cleaning the lens, the piece of cloth does not catch on the nut element.

[0006]

SUMMARY OF THE INVENTION A lens mounting structure according to the present invention is for fixing a lens to one or both of a brim and a bridge of frameless spectacles. According to the present invention, one or both of the yoke and the bridge are provided with a male screw element protruding from a predetermined position, and a predetermined position of the lens is provided with an insertion hole for inserting a male screw. A concave portion for accommodating a nut element to be screwed to a male screw element is formed in a second lens surface opposite to the first lens surface where one or both of the yoke and the bridge are applied to the lens. Formed for According to such a configuration, when the lens surface is wiped with a piece of cloth or the like for cleaning the lens, the piece of cloth is prevented from being caught on the nut element.

[0007] Preferably, the recess has a depth such that the nut element does not substantially protrude from the second lens surface of the lens. Also preferably, one or both of the yoke and the bridge are provided with at least one projection close to the male screw element, and this projection is cut into the first lens surface when mounting the lens. This ensures that the lens is prevented from pivoting around the male screw element. A lens mounting structure, characterized in that:

[0008]

Next, an embodiment of a lens mounting structure according to the present invention will be described with reference to the accompanying drawings.

Referring first to FIG. 1, a part of the configuration of the frameless eyeglasses in which the lens mounting structure according to the present invention is implemented is shown as an exploded arrangement view. That is, FIG. 2 shows the temple T, the lens L, and the nut element N in an assembled state.

At the front end of the temple T, a yoro 10 is pivotally connected by a pivot shaft 11, and the inner surface at the front end of the yolo 10 is shaped to fit the front surface of the lens L, that is, the first lens surface F1. . Note that the temple T and the yoke 10 are formed of a suitable light metal material, for example, a titanium alloy or the like, as in the related art. A male screw element 12 protrudes from the inner surface on the distal side of the yoke 10, and this male screw element 12 is formed of, for example, a brass material and brazed to the yoke 10. Also. A pair of projection elements 14 are integrally formed on the inner surface on the distal end side of the yoke 10, and the pair of projection elements 1
4 are preferably arranged on both sides of the male screw element 12.

The lens L has an insertion hole 1 close to the outer edge thereof.
6 are formed, and at the time of assembly, the male screw element 12
Is inserted through the insertion hole 16 from the first lens surface F1 side, and the inner surface on the distal end side of the yoke 10 is applied to the first lens surface F1 of the lens L. The second lens surface F on the opposite side of the first lens surface F1 from which the yolo 10 is applied to the lens L
A recess 18 is formed in the insertion hole 16 with respect to the insertion hole 16, and a nut element N is housed in the recess 18 and screwed to the male screw element 12.

As shown in FIGS. 2 to 4, the nut element N comprises a head portion 20 and an annular portion 22 suspended from the head portion 20. Head 2 for nut element N
A bore 24 is formed through the O and the annular portion 22, and a female screw adapted to screw with the male screw element 12 is formed on the inner surface of the bore 24. As is clear from FIGS. 2 and 3, the top of the head portion 20 of the nut element N is provided with a bore 2.
A pair of grooves 26 is formed in the diametrical direction with respect to the tool 4, and a tool D as shown in FIGS. 5 and 6 is engaged with the pair of grooves 26.

[0013] As shown in FIG.
8 and a shank 30 extending from the manual operation unit 28. A hollow bore 32 is formed at the tip end of the shank portion 30. A pair of ridges 34 are formed on the inner wall surface of the hollow bore 32 in the longitudinal axis direction and are arranged so as to face each other in the diametrical direction.

The inner diameter of the hollow bore 32 is somewhat larger than the outer diameter of the head part 20 of the nut element N, and the thickness of each ridge 34 is made somewhat smaller than the width of each groove 26 of the head part 20. Therefore, it is possible to fit the head portion 20 of the nut element N into the opening of the hollow bore 32 on the tip side of the shank portion 30 of the tool D, and to connect the tip portions of the pair of ridges 34 to the pair of groove portions 26. Can be engaged. In short, by rotating the tool D with the head part 20 of the nut element N mounted on the tip of the shank part 30 of the tool D, the nut element N can be driven to rotate.

After the male screw element 12 of the yoke 10 is inserted into the insertion hole 16 of the lens L from the first lens surface F1 side as shown in FIG. 1, the nut element N is inserted into the tip of the male screw element 12. Then, the nut element N is tightened with the tool D, so that the armature 10 is fixed to the lens L. When the nut element N is tightened by the tool D, the pair of projecting elements 14 bites into the first lens surface F1 of the lens L, so that the rotation of the lens L around the male screw element 12 is prevented. .

As is apparent from FIG. 7, it is preferable that the depth of the concave portion 18 is such that the nut element N does not substantially protrude from the second lens surface F2 of the lens L. In this case, When the second lens surface F2 is wiped with a piece of cloth or the like for cleaning the lens L, the piece of cloth is reliably prevented from being caught on the nut element N. Of course, when the top surface of the head portion 20 of the nut element N is formed as a smooth curved surface, even if the head portion 20 slightly protrudes from the lens surface F2, a piece of cloth or the like may be caught. Without the nut element N
Fully contained within is not essential to the invention.

In the above embodiment, the nut element N
A special tool D is prepared for the rotation drive of
However, a hexagonal recess for receiving a conventional hexagonal wrench may be formed in the head portion 20 of the nut element N.

Furthermore, in the above-described embodiment, the description has been given of the attachment of the yoroi 10 to the lens L. However, it should be understood that the same lens attachment structure can be applied to the attachment of the bridge to the lens L. is there.

[0019]

As is apparent from the above description, in the lens mounting structure for frameless eyeglasses according to the present invention, it is possible to easily mount the yolo or the bridge to the lens L at a spectacle store. In addition, as described above, it is possible to prevent the nut element from being caught by the cloth or the like when cleaning the lens with the cloth or the like. In this way, it is possible to promptly provide the customer with necessary edgeless glasses. In addition, there is an advantage that even when the frameless glasses are damaged, it can be dealt with at the store.

[Brief description of the drawings]

FIG. 1 is an exploded component view showing a part of the configuration of frameless eyeglasses implementing a lens mounting structure according to the present invention.

FIG. 2 is a plan view of a nut element used in the lens mounting structure according to the present invention.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a bottom view of the nut element shown in FIG. 2;

FIG. 5 is a plan view of a tool used for tightening the nut shown in FIGS. 2 to 4;

6 is an end view of a tip end side of a shank portion of the tool of FIG. 5;

FIG. 7 is a partially sectional assembly completion view showing a state after the assembly of the components shown in FIG. 1 is completed.

[Description of Signs] T Temple L Lens N Nut Element D Tool 10 Yoroi 12 Male Thread Element 14 Projection 16 Insertion Hole 18 Depression 20 Head Section 22 Annular Section 24 Bore 26 Groove Section 28 Manual Operation Section 30 Shank Section 32 Hollow Bore 34 Convex Section

Claims (3)

[Claims] 1. A lens mounting structure for fixing a lens to one or both of a yoke and a bridge of frameless glasses, wherein one or both of the yolo and the bridge protrude from a predetermined position. A male screw element is provided, an insertion hole for inserting the male screw is provided at a predetermined position of the lens, and one or both of the yolo and the bridge are applied to the lens with a first lens surface. A lens mounting structure, wherein a concave portion for receiving a nut element screwed to the male screw element is formed in the insertion hole on the second lens surface on the opposite side. 2. The lens mounting structure according to claim 1, wherein the recess has a depth that does not substantially protrude the nut element from a second lens surface of the lens. Lens mounting structure. 3. The lens mounting structure according to claim 1, wherein at least one of the yoke and the bridge is provided with at least one projection close to a male screw element. Is cut into the first lens surface when the lens is mounted.