JP2003084237A - Fixing structure for spectacle frame parts and two-point frame spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing structure of spectacle frame parts to spectacle lenses which does not exert a local stress on the spectacle lenses. SOLUTION: An exchangeable anchor of a throwing type is embedded into a through-hole of the spectacle lens and the frame parts are fixed to this anchor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure for fixing a spectacle frame component to a spectacle lens and a two-point frame spectacle having the fixing structure.

[0002]

2. Description of the Related Art General spectacles include a pair of left and right spectacle lenses and a frame for wearing the spectacle lenses on a face. The frame has a pair of left and right rims connected by a bridge, and a spectacle lens is fitted into these rims. An end piece is attached to each outer side of the pair of left and right rims.

Recently, rimless spectacles, so-called two-point frame spectacles, have become popular. The reason is that there is no rim, so the glasses are inconspicuous (high fashion) and are lightweight. As a fixing structure for fixing the armor to the spectacle lens without using a rim, a structure in which a screw connected to the armor is inserted into a hole formed in the lens and is screwed from the opposite side of the lens with a nut is used. .

[0004]

However, in the structure in which the frame component is directly screwed to the spectacle lens, the spectacle lens is locally pressurized during screwing, and if this state continues for a long period of time, the spectacle lens is spectacled. There was a risk of damaging the lens. The present invention, in order to solve such a problem, in a spectacle lens,
An object of the present invention is to provide a fixing structure for fixing a frame component without directly applying a local stress, and two-point frame glasses including the fixing structure.

[0005]

In order to solve such a problem, in the fixing structure of the invention according to claim 1, a spectacle lens is provided with a through hole, and the through hole is replaceable by throwing from the eyepiece side. An anchor is embedded and the spectacle frame component is fixed to the anchor from the objective side.

A fixing structure according to a second aspect of the present invention is the fixing structure according to the first aspect, characterized in that the through hole has a non-circular shape. According to a third aspect of the present invention, there is provided the fixing structure according to the first or second aspect, wherein the anchor and the spectacle frame component are provided with rotation stoppers.

In the two-point frame eyeglasses of the invention according to claim 4, a pair of left and right eyeglass lenses, a bridge for connecting the left and right pair of eyeglass lenses, a pair of left and right temples, and an armor for connecting the eyeglass lenses and the temples. The fixing structure for fixing the bridge to the spectacle lens or the fixing structure for fixing the endpiece to the spectacle lens is characterized by using the fixing structure according to any one of claims 1 to 3.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. However, the present invention is not limited to this.
The surface of the spectacle lens near the eye is called the eyepiece surface, and the surface far from the eye is called the objective surface.

First, a through hole is formed in the eyeglass lens, and an anchor is embedded from the eyepiece side of the eyeglass lens. The anchor fixes the spectacle frame component, and the spectacle frame component is fixed to the spectacle lens via the anchor. Further, the anchor of the present invention is of a so-called throw-in type, and is fixed by being fitted in the through hole of the spectacle lens by removing the degrees of freedom in the lateral direction and the object plane direction. For this reason, the movement in the eyepiece direction is free, and even after the anchor is embedded once, if necessary,
Can be removed from the spectacle lens and replaced.

The material used for the anchor may be plastic, metal or hard rubber. A transparent material is more preferable because the member is less noticeable. Further, the shape of the anchor is not particularly limited as long as it can fix the frame component and can be fitted into the through hole of the spectacle lens, and a part of the anchor is projected from the eyepiece side surface of the spectacle lens. I don't care. However, it is preferable that it does not project because it does not interfere with the cleaning of the spectacle lens. Furthermore, in order to improve the effect of preventing the rotation of the anchor, it is preferable that the anchor has a rotationally asymmetric shape (non-circular shape) such as an ellipse or a polygon.

The means for fixing the frame component to the anchor is not particularly limited, but a through hole is provided in the anchor, and the frame component having a screw thread in this through hole is inserted from the objective side of the spectacle lens to You may fix with a nut from the eyepiece side. In this case, since the nut does not come into direct contact with the spectacle lens, local stress is not directly applied to the spectacle lens.

In order to fix the frame component to the anchor without using screws, the anchor is provided with a hole substantially parallel to the objective surface of the spectacle lens, and the frame component is fitted into this hole so that the frame component is fixed to the anchor. You may fix it. The hole provided in the anchor is for fixing the frame component, and does not need to be a through hole in the direction of penetrating the spectacle lens. Further, the shape of the frame component is preferably such that, for example, the cutout portion is caught near the entrance of the through hole so as not to come off from the hole of the anchor. In order to enhance the effect of preventing rotation of the frame component and the anchor, it is preferable that the frame component and the anchor are shaped so as to fit together. For example, one member is provided with a concave portion, and the other member is provided with a convex portion at a position where it abuts.

The material used for the frame part may be β titanium, titanium alloy, cobalt alloy, aluminum alloy, nickel silver or any other material generally used for eyeglass frames, and may be plastic.

In order to prevent the anchor embedded in the through hole from slipping out of the through hole from the objective side of the spectacle lens, the anchor is provided with a collar (the collar comes into contact with the eyepiece side surface of the spectacle lens), or There is a step inside the hole,
The shape of the through hole may be a truncated cone (the eyepiece side is the bottom surface).

Specific examples will be described below with reference to examples, but the present invention is not limited to these examples. Although the first to fourth embodiments are examples of the structure for fixing the armature to the spectacle lens, they can also be used for the structure for fixing other frame parts such as a bridge to the spectacle lens.

[0016]

Example 1 will be described with reference to FIGS. 1 and 2. Example 1
Is an example of fixing an armor to a spectacle lens (hereinafter abbreviated as a lens in the embodiments). FIG. 2 shows a state in which the anchor 3 is attached to the through hole 2 of the lens 1, and the lens is viewed from the front (object side). A through hole 2 extending leftward and rightward with eyeglasses attached is formed on each of the end side and the nose side of the lens 1. A transparent hard nylon anchor 3 is fitted into the through hole 2 from the eyepiece side.

FIG. 1 shows an anchor 3 and a connecting member 4 for connecting to an armature.
It is the figure which unfolded (it is hereafter abbreviated as connecting member 4) and nut 6. The outer shape of the anchor 3 is approximately the same as the shape of the through hole 2 in order to fit it into the through hole 2 of the lens. The size of the through hole 2 is such that when the lens is viewed from the front,
The horizontal direction is 4 mm and the vertical direction is 3 mm. The anchor 3 is provided with a through hole 5 having a diameter of 1.5 mm, which is not threaded, and is further provided with linear notches 7 and 7'having a width of 1 mm at the front (object side). There is. Behind the anchor 3 (on the eyepiece side) is a brim 9, 9'having a length of 1.5 mm.
Is provided, which prevents the anchor from coming out of the through hole 2 toward the objective side of the lens. On the other hand, width 1.8m
A connection member 4 (diameter 1.4 mm) made of stainless steel is fixed to the lens side of the armor 10 of m. Furthermore, plate-like protrusions 8 made of stainless steel are also provided on both sides of the connecting member 4, and the protrusions 8 have a height of 0.7 mm. The connecting member 4 has a length of 3.5 mm, and is threaded at the tip of 2 mm, and the rear end is embedded in the end piece 10 and fixed.

Next, a fixing structure using these members will be described. First, as shown in FIG. 2, the anchor 3 is thrown in and inserted into the through hole 2 of the lens 1 from the eyepiece side of the lens. In this case, no adhesive is used. Next, the connecting member 4 on the end piece side is inserted into the through hole 5 of the anchor 3. At this time, the two protrusions 8 and 8'on both sides of the connecting member 4 are fitted into the cutout portions 7 and 7'of the anchor 3, respectively. Thereby, the rotation of the connecting member 4 can be prevented.

In this state, the connecting member 4 is screwed from the eyepiece side of the anchor 3 using the nut 6 to fix the armature to the lens. FIG. 3 shows a state in which the lens is fixed when viewed from the eyepiece side of the lens. It should be noted that the lens is omitted in FIG. 3 to show the state near the anchor.

Since the nut 6 enters the inside of the collar 9 of the anchor 3 and is not in direct contact with the lens, it does not apply a local stress to the lens. In the fixing structure of this embodiment, it is easy to replace the lens and the end piece. When the nut 6 is removed from the eyepiece side of the connecting member 4 and the connecting member 4 is pulled out from the objective side of the lens, the lens and the armor are separated. Then you can replace it with another lens or armor. Because it is so easy, you can easily exchange it at an eyeglass store and it will only take a few minutes.

Further, the width of the end piece is 1.8 mm and the length of the anchor in the vertical direction is 3 mm, and the difference between them is only 1.2 mm.
Since the anchor is made of transparent nylon, the fixing structure between the armor and the lens is inconspicuous, and the appearance is simple and beautiful.

In this embodiment, the connecting member is a male screw and is screwed from the eyepiece side with a nut. However, the tip of the connecting member may be a female screw and the eyepiece side may be screwed with a male screw.

[0023]

[Second Embodiment] A second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, a substantially square through hole 12 is formed in the lens. Actually, since the holes are provided by the drill, the corners of the quadrangle have a rounded shape.

As shown in FIG. 5, the cross section of the anchor 13 is substantially rectangular like the through hole 12. Anchor 1
3 is provided with notches 17 and 17 'for preventing rotation of the connecting member 14 and flanges 19 and 19' as in the first embodiment. Similar to the first embodiment, the anchor 13 is inserted into the through hole 12 from the eyepiece side of the lens. After that, the connecting member 14 provided with a screw at the tip is inserted from the objective side of the lens, and is screwed from the eyepiece side with a nut to fix the armature to the lens. Since the outer shape of the anchor and the cross section of the through hole of the lens according to the second embodiment are substantially quadrangular, they are more stable against rotation.

[0025]

Third Embodiment A third embodiment is an example of fixing a frame component to a lens without using screws. As shown in FIG. 6, the anchor 2
3 is provided with a hole 25 which is substantially parallel to the objective surface of the lens, and the hole 24 is fitted into this hole to fix the hole to the lens via an anchor.

A through hole is formed in the lens as in the first embodiment. The anchor 23 is made of transparent polycarbonate, and its cross-sectional shape is almost the same as the shape of the through hole formed in the lens. A through hole 25 is provided at the tip (object side) of the anchor in a direction substantially parallel to the lens surface. At the rear end (eyepiece side) of the anchor, a brim 2
9, 29 'are provided.

First, the anchor 23 is inserted into the through hole of the lens from the eyepiece side of the lens. Then, with the tool pressed from the eyepiece side toward the object side, the end piece 24 is fitted into the through hole 25 of the anchor. The inner diameter is small only near the entrance of the through hole 25, and conversely, there is a protrusion. The end piece 28 is provided with a constriction 28, and the end piece is prevented from coming out of the through hole when the projection is fitted into the "constriction" 28 and caught.

Next, the tool pressing the eyepiece side of the anchor is removed. As a result, the elastic anchor tries to return to the eyepiece side, and the armature is fixed while being biased by the lens via the anchor. The fixing structure of the present embodiment is not a screw-fastening method, and since the armature does not directly press the lens, no local stress is applied to the lens.

The hole 25 provided in the anchor of this embodiment
Does not need to be a through hole as long as it can fix the armor.

[0030]

Fourth Embodiment A fourth embodiment is an example in which the through hole 32 of the lens has a truncated cone shape. Figure 7 shows the lens, anchor, armor,
It is sectional drawing of a nut. The lens 1 is provided with a truncated cone-shaped through hole 32, and the eyepiece side has a larger opening than the objective side. The outer shape of the anchor 33 is also a truncated cone, and its inclination is the same as the inclination of the through hole 32. Therefore, the anchor 33 can be inserted into the through hole 32 without a gap.

First, the anchor 33 from the eyepiece side of the lens 1.
Is inserted into the through hole 32. The length of the anchor (the length in the thickness direction of the lens) is shorter than the thickness of the lens, and the entire anchor fits within the through hole 32.

Next, the same connecting member 4 as the first embodiment is used.
4 is inserted into the through hole 35 of the anchor from the objective side of the lens. A thread is provided at the tip of the connecting member 44,
It is screwed from the eyepiece side of the lens using a nut 46.

FIG. 8 shows a state in which the armature is fixed to the lens 1. The nut 36 fits in the through hole 32 of the lens and does not come into direct contact with the lens. Therefore, the lens is not locally stressed by the screw. In addition, part of the nut does not stick out on the surface of the lens, so it looks simple and beautiful.

In order to prevent rotation of the anchor and the endpiece, the notch 47 is formed in the anchor as in the first embodiment.
There is a brim 48 on the end, and both are fitted.

[0035]

As described above, according to the present invention, the frame component can be fixed to the spectacle lens without directly applying local stress to the spectacle lens. It is the anchor that is locally stressed, the inexpensive parts even if the anchor breaks and the replacement is easy.

[Brief description of drawings]

FIG. 1 is a perspective view of a fixing structure of a first embodiment in a disassembled state.

FIG. 2 is an enlarged front view of a portion of the spectacle lens of Example 1 in which an anchor is inserted.

FIG. 3 is a perspective view of the fixing structure of Example 1 viewed from the eyepiece surface side of a spectacle lens.

FIG. 4 is an enlarged front view of a portion of an eyeglass lens of Example 2 in which an anchor is inserted.

FIG. 5 is a perspective view of the fixing structure of the second embodiment in an exploded state.

FIG. 6 is a perspective view of the fixing structure of the third embodiment in a disassembled state.

FIG. 7 is a sectional view of the fixing structure of Example 4 in an exploded state.

FIG. 8 is a sectional view of the fixing structure of Example 4 in an assembled state.

[Explanation of symbols]

1 ... spectacle lens 2 ... Through hole 3 ... Anchor 4 ... Connecting member 5… Through hole 6 ... Nut 7 ... Notch 8 ... Projection 10 ...

Claims (4)

[Claims] 1. A fixing structure for fixing a spectacle frame component to a spectacle lens, wherein a through hole is provided in the lens, a throwable replaceable anchor is embedded in the through hole from the eyepiece side, and the component is attached from the objective side to the Fixing structure for eyeglass frame parts fixed to the anchor. 2. The fixing structure for an eyeglass frame part according to claim 1, wherein the through hole has a non-circular shape. 3. The fixing structure for the spectacle frame part according to claim 1, wherein the anchor and the spectacle frame part are provided with rotation stoppers. 4. A two-point frame spectacles mainly composed of a pair of left and right spectacle lenses, a bridge connecting the pair of left and right spectacle lenses, a pair of left and right temples, and an armature connecting the spectacle lenses and the temples, Alternatively, the two-point frame eyeglasses are characterized in that the fixing structure for fixing the endpiece to the spectacle lens is the fixing structure according to any one of claims 1 to 3.