JP2002244084A - Rimless spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realizes rimless spectacles of a simple structure which realize holding of lenses and stable fixing (prevention of rotation and shaking), permit the easy replacement of parts and are simple in structure. SOLUTION: The rimless spectacles are provided with lens-fixing holes for fixing a bridge as well as wraparound endpieces and lenses by fitting screws into the lenses and lens-fixation assisting holes in contact with the lens-fixing holes. The bridge and the wraparound endpieces are provided with fixation- assisting projections to be fitted into the lens-fixation assisting holes and the fixation-assisting projections are fitted into the lens-fixation assisting holes, by which the lenses as well as the bridge and the wraparound endpieces are screwed and fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to rimless glasses. More specifically, the present invention relates to a mechanism for fixing a temple (yoroi) and a bridge to glasses.

[0002]

2. Description of the Related Art In rimless glasses, a screw hole is provided in a lens, and a bridge or an eyepiece is fixed with a screw. in this case,
In the case where the lens is fixed with only one screw hole, the lens is rotated around the screw as a center axis. Therefore, a lens pad is provided along the circumference (curve) of the lens to prevent rotation.

[0003] The above-mentioned lens contact portion requires a fine process of brazing with a slewing portion. Since this method has problems such as occurrence of row separation, several fixing methods without using brazing have been proposed.

[0004] As the inventions and inventions that hold and stably fix the lens without using brazing, "Rimless spectacles" (Japanese Utility Model Application No. 7-633) and "Method of attaching temples and bridges to spectacle lenses" ( Japanese Unexamined Patent Application Publication No. 11-174385), "Glass lens mounting structure" (Japanese Utility Model Application No. 10-3429).
In rimless spectacles, a method is used in which a lens is provided with a screw hole and a notch in the outer periphery of the lens, the lens is held by the screw hole, and the lens is fixed by the notch.

In the method of mounting the spectacle lens and the bridge, a pair of screw insertion holes (2 for temples and 3 for bridges) are provided in the lens 1 as shown in FIGS. The bridge (4 in FIG. 2) is fitted into the insertion hole and the lens is held and fixed by tightening a screw with a nut.

In the above invention, the lens is held and fixed at two points (two points). In a lens mounting structure for eyeglasses, the lens is fixed by an elliptical through hole. FIG. 3 shows a structure viewed mainly from the through-hole portion. Yoroy 5
A screw portion 6 (elliptical cross section) at the tip of (Yoroi) is fitted into an elliptical through-hole 8 formed in the lens 7, and a screw 9 holds the yoyo and the lens. Since the through hole has an elliptical shape, the lens can be stably fixed while holding the lens with a screw.

[0007]

There are the following problems in the commonly used brazing method and the method using a lens pad for fixing a lens.・ Material-specific eyeglass parts are required according to the material used.・ It is necessary to determine the mounting position of the bridge and the yoke according to the lens shape during manufacturing.・ Limited in design. -It is necessary to manufacture a lens pad according to the lens curve in advance. -There are restrictions on color combinations.・ Because the connection between the lens pad and the lens holding component is integrated by brazing, separation from the row is likely to occur, and the number of working steps increases. -If the lens curve does not match the lens curve, the lens may not be stable.

[0008] In order to solve the above problems, ideas and inventions as mentioned in the prior art have been proposed. In either case, in order to realize the holding and stable fixing (rotation prevention and rattling prevention) of the lens, two points are held or the shape of the lens hole serving as a screw insertion hole is devised.

The problem to be solved by the present invention also proposes a method different from the invention and invention described in the prior art for solving the problems relating to the lens holding / fixing that occur in the case of brazing or applying a lens. It is to be. In particular, an object of the present invention is to realize rimless eyeglasses in which parts are easily replaced and which has a simple appearance.

[0010]

According to a first aspect of the present invention, there is provided a bridge for connecting left and right lenses, and a lens for connecting a lens and a temple directly to the lens. In rimless glasses,
(1) a lens fixing hole for fixing the bridge and the yoke and the lens by inserting a screw into the lens, and a lens fixing auxiliary hole in contact with the lens fixing hole, (2) the bridge and the A rimless pair of eyeglasses having a fixing auxiliary projection fitted to the lens fixing auxiliary hole in the yoke, (3) fitting the fixing auxiliary projection to the lens fixing auxiliary hole, and screwing and fixing the lens, the bridge, and the yolo. And

According to a second aspect of the present invention, there is provided the rimless glasses according to the first aspect of the present invention, wherein a screw groove is formed on a surface of the auxiliary fixing projection that is in contact with the fixing hole.

The auxiliary lens fixing hole may have the same size as the lens fixing hole or a different size. In the case of almost the same shape and size, the appearance becomes a daruma shape. Generally, it is desirable to make the lens fixing auxiliary hole smaller than the lens fixing hole. Although the lens fixing auxiliary hole can be of any shape, a cylindrical shape having a lack of the lens fixing hole side is advantageous in terms of processing.

A projection and a screw hole are provided on each of the bridge and the yoke. The projection is inserted into the lens fixing hole, and the screw hole is a female screw corresponding to the lens holding hole. When the fixing hole and the holding hole are in contact with each other, the protrusion may have a smooth cylindrical shape, but when the fixing hole and the holding hole partially overlap (in a cutout state).
Cuts the portion of the projection that contacts the screw into a female screw shape.

The fixing hole of the lens must be a penetrating hole for passing a screw, but the fixing auxiliary hole does not need to penetrate. Since the fixing auxiliary projection is inserted from the front surface side of the lens to the back surface (face side), the surface of the lens is smoother if it is not formed as a through hole, and the lens is finished in a neat appearance.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described with reference to the drawings. Both the bridge and the yoke must be connected to the glasses, but since the connection method of both is the same, only the yoke part will be described below.

In the example shown in FIG.
Preferably, the degree of overlap between the lens fixing auxiliary hole 12 and the lens fixing auxiliary hole 12 is such that the circumference of the lens fixing hole 11 passes through the center point of the lens fixing auxiliary hole 12. If the holding hole goes deeper than this, the lens-fixing auxiliary projections of the yoro and bridge become thinner, and the strength of the rotation stopper may be reduced.

FIG. 5 shows a lens fixing auxiliary projection 1 of the yoke 13.
It is the front view seen from the direction of 4 (hatched part of the figure). In FIG. 5, a portion of the lens fixing auxiliary projection 14 facing the lens fixing hole has a thread tap.

FIG. 6 is a perspective view of each component. Note that the size of each part is not proportional to the original size because each part is independently enlarged for explanation. Align the screw hole 15 of the yoke 13 with the lens fixing hole 11 of the lens 10, insert the lens fixing auxiliary projection 14 into the lens fixing auxiliary hole 12,
When the screw 16 (male screw) is screwed into the screw hole 15 of the yoke 13, assembly is completed. In this example, a screw tap 17 is cut in the lens fixing auxiliary projection 14, and a part of the projection also functions as a female screw.

FIG. 7 is a side view when the lens and the coil are screwed. This figure shows an example in which a lens fixing auxiliary hole 12 is provided to stop rotation of the lens 10. The lens fixing auxiliary projection 14 of the yoke 13 has a length equal to the thickness of the lens. The tip is adjusted to come.

FIG. 8 shows an example in which the lens fixing auxiliary hole 12 is made shallower than the lens thickness. The length of the lens fixing auxiliary projection 14 is adjusted to the depth of the lens fixing auxiliary hole. In this case, since there is no notch in the fixing hole on the surface of the lens, a portion corresponding to the fixing hole has a smooth finish.

[0021]

According to the present invention, a hole and a hole are stably mounted on a lens with a screw without using brazing or a lens pad so that the area of the mounting portion is reduced.
The structure is such that it can be opened, is easy to install, and looks beautiful. In the present invention, a fixing hole (hole) and a holding hole (screw hole) are provided in the lens, and a method of stopping rotation by the fixing hole (hole) and screwing by the holding hole is proposed. In addition to reducing the sum of the engraving cross-sections of the, the fixing holes (holes) and the holding holes partially overlap so that the area of the mounting member (yoroi and bridge) in contact with the lens at the mounting portion is reduced. (The maximum mounting area <the area of the connecting portion> is when both holes or holes are in contact with each other). As a result, the following effects can be obtained.

1. By integrally forming the projection and the screw hole to be attached to the bridge and the yoke, the number of parts can be reduced. 2. By integrally forming the projection and the screw hole to be attached to the bridge and the yoke, the number of parts can be reduced, and the number of assembling steps can be reduced. 3. Since no lens pad is required, the lens shape can be changed freely. 4. Since no lens pad is required, the mounting position can be freely changed. 5. There is no restriction on the design, and a slim and simple design is possible. 6. When the glasses are worn, a force is applied to the temples by applying an opening force to the temples, thereby applying pressure to the screws and reducing the loosening of the screws. 7. Since parts can be freely replaced, parts can be easily sold on the Internet. 8 The back of the lens is a screw head and the area of the mounting part is small, so it has a neat design, and it is easy to clean the lens. 9. Can be manufactured at low cost. 10. No special lens processing machine is required.

When the fixing member is used, the effect is opposite to the effect described in the above item 1. However, since a different material from the yoke and the bridge can be used, the material of the yolo and the bridge is soft (problem in strength). Even if the fixing member is made of a strong material, the strength can be maintained even if the fixing hole of the yoke or the bridge and the fixing hole of the lens are reduced by using a strong material for the fixing member.

[Brief description of the drawings]

FIG. 1 is a diagram showing positions of screw holes formed in a lens of rimless glasses to be screwed at two points in the related art.

FIG. 2 is a diagram showing a screw attached to a yoke and a bridge, which is screwed into a screw hole formed in a lens of rimless glasses to be screwed at two points in the prior art.

FIG. 3 is a cross-sectional view illustrating a conventional eyeglass mounting structure using an elliptical through hole.

FIG. 4 is a front view showing fixing holes (holes) and holding holes formed in the lens of the rimless glasses of the present invention.

FIG. 5 is a front view showing projections and screw holes provided on a yoke of the rimless glasses of the present invention.

FIG. 6 is a perspective view for explaining the shape and mounting method of each component of the rimless glasses of the present invention.

FIG. 7 is a side cross-sectional view of the rimless glasses according to the present invention when a yoroi is attached to a lens.

FIG. 8 is a side cross-sectional view of the rimless glasses according to the present invention when a yoroi is attached to a lens.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 lens 2 screw insertion hole 3 screw insertion hole 4 bridge 5 screw 6 screw portion 7 lens 8 through hole 9 screw 10 lens 11 lens fixing hole 12 lens fixing auxiliary hole 13 yolo 14 lens fixing auxiliary protrusion 15 screw hole 16 screw 17 screw tap

Claims (2)

[Claims] 1. A bridge for connecting left and right lenses and a rimless spectacle for directly connecting a lens connecting a lens and a temple to a lens. (1) A screw is inserted into the lens to insert the bridge, the lens and the lens. A lens fixing hole for fixing the lens and a lens fixing auxiliary hole in contact with the lens fixing hole; (2) a fixing auxiliary projection fitted to the lens fixing auxiliary hole in the bridge and the yoke; (3) The rimless eyeglasses, wherein the fixing auxiliary projection is fitted into the lens fixing auxiliary hole, and the lens, the bridge, and the yoke are fixed by screws. 2. The rimless glasses according to claim 1, wherein a screw groove is formed on a surface of the auxiliary fixing projection that contacts the fixing hole.