JPH0782161B2 - Rimless eyeglass washers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing part used for assembling in fabrication of rimless frame glasses.

[0002]

2. Description of the Related Art Conventionally, in the processing of rimless frame spectacles, generally, as shown in FIG. 6, a hole is made in a lens 9 and spectacle parts such as a tooth 2, a bridge 3 and the like are fixed by a washer 6, a nut 7 and a screw 8. There is. The washer 6 used at this time is in planar contact with the lens and the component.

Generally, edgeless frame wisdom, bridges,
Parts such as screws are normally manufactured with a lens having a base curve (curvature radius 87.17 mm) of about 6 curves as a standard.

[0004]

The base curve of the lens is variously different depending on the power and the material. Since the parts made according to the standard base curve are attached to the lenses having various base curves, the angle formed by the parts and the lens differs depending on the base curve of the lens. FIG. 7 shows the attachment of the two-curve concave lens 4 and the wisdom 2. FIG. 8 shows the mounting of the 8-curve convex lens 5 and the wisdom 2. As is clear from FIGS. 7 and 8, when the base curve of the lens is different, the angle formed by the wisdom and the lens is different. 9 and 10 show the difference in the warp angle due to the difference in the base curve in mounting the bridge and the lens, which is the same as in the case of mounting the lens and the lens shown in FIGS. 7 and 8.

As described above, when assembling the rimless frame spectacles, the base curve of the lens surface and the slope of the component are fixed to each other, so that a simple component assembly can provide a proper mounting condition of the component. No, it is necessary to adjust the warp angle of the lens and the opening of the temple.
In the actual adjustment of spectacles, the desired shape cannot be obtained because the warp angle is different between the left and right, and the difference in the wisdom and temple opening is different between the left and right. Therefore, it is necessary to repeat large adjustments. Since this adjustment is caused by deformation or the like, there are problems that parts are scratched, broken, screws are bent, and breakage easily occurs.

[0006]

In order to solve the above problems, a washer having a convex curved surface that abuts the lens surface is used, and the Parts such as bridges are assembled at the correct angle.

[0007]

The operation of the convex curved washer of the present invention will be described with reference to the drawings. FIG. 4 is a plan view of the convex curved washer of the present invention. There is a hole for passing a screw in the center, and it has a ring shape as a whole. FIG. 5 is a sectional view of the convex curved washer of the present invention. One surface of the convex curved washer 1 that contacts the lens forms a convex curved surface. This is a shape for contacting with lens surfaces having various base curves at one point during assembly. The surface of the convex curved washer 1 that is in contact with the nut is a flat surface. As the material used for the washer of the present invention, a material having strength such as metal or hard resin is suitable.

When using the convex curved washer of the present invention, it is necessary to machine the lens so that the direction of the screw hole for mounting the lens component has a normal angle with respect to the mounting component. . 11 to 13 show an example of a lens screw hole processing method when the washer of the present invention is used.
Explained. A standard 6-curve dummy lens for manufacturing eyeglass parts for edgeless frames such as Ji and bridges is provided with screw holes having a normal angle. It is sufficient to make a hole in the same direction as the screw hole of this dummy lens.

FIG. 11 shows the case of a concave lens (two curves). The concave lens 4 to be processed and the dummy lens 10 (lens having 6 curves) for the frame without a frame are placed on the holding table 12 in an overlapping manner. Adjust the pin 13 of the holding base 12 so that the screw hole 11 of the dummy lens 10 is in the specified position and direction,
Guide in the direction of the drill not shown. When the direction of the screw hole is fixed, remove the dummy lens, and
Make a screw hole with a drill.

12 and 13 show the case of a convex lens (8 curves). The convex lens (8 curves) has a steeper front curve and a gentler rear curve. Therefore, as shown in FIG. 12, only the dummy lens 10 is attached to the holding table 1
Put it on 2, adjust the pin 13 of the holding base 12 based on the screw hole 11, and guide it in the direction of the drill. When the direction of the screw hole is determined, the dummy lens is removed, and the convex lens 5 is put on the screw hole as shown in FIG.

Through the screw holes formed in the lens in this way, the screw-component-convex curved washer-lens-convex curved washer-nut is fixed. FIG. 1 shows a state in which a concave lens (two curves) is fixed to the tip. The concave lens 4 is supported by the convex curved surface of the washer 1 from both sides. FIG. 2 is a view showing the fixing of the concave lens 4 and the bridge 3. The concave lens 4 is supported by the convex curved surface of the washer 1 from both sides of the concave lens 4 as in the case of fixing the lens shown in FIG. Since the mounting direction of the component using the convex curved washer of the present invention is determined by the screw hole, normal mounting can be performed simply by assembling the glasses.

[0012]

As described above, the lens screw holes are machined so that the direction of the screw holes has a normal angle with respect to the mounting parts, and the convex curved washer is used so that the lens surfaces come into contact with each other on a hemispherical surface. By fixing, it is possible to obtain a normal mounting state of parts. Using the convex curved washer of the present invention, each spectacle component based on a 6-curve lens can be normally fixed to various base-curve lenses,
By assembling the parts, you can get the desired warp angle of the lens surface and temple opening. This eliminates the need for large adjustments, and has the effect of avoiding scratches, damage, etc. due to excessive deformation.

[Brief description of drawings]

FIG. 1 is an explanatory view showing how a lens is attached to a tip using a convex curved washer of the present invention.

FIG. 2 is an explanatory diagram showing how a lens is attached to a bridge using the convex curved washer of the present invention.

FIG. 3 is an explanatory view showing a state in which a lens is attached to a tip using the convex curved washer of the present invention.

FIG. 4 is a plan view of a convex curved washer.

FIG. 5 is a sectional view of a convex curved washer.

FIG. 6 is a diagram illustrating how a conventional lens is attached.

FIG. 7 is an explanatory view showing the attachment of a two-curve concave lens and a tip.

FIG. 8 is an explanatory diagram showing attachment of an 8-curve convex lens and wisdom.

FIG. 9 is an explanatory view showing the attachment of a two-curve concave lens and a bridge.

FIG. 10 is an explanatory diagram showing the attachment of an 8-curve convex lens and a bridge.

FIG. 11 is an explanatory diagram of a screw hole processing method for a concave lens.

FIG. 12 is an explanatory diagram of a screw hole processing method for a convex lens.

FIG. 13 is an explanatory diagram of a screw hole processing method for a convex lens.

[Explanation of symbols]

 1 Convex curved washer 2 Ji 3 Bridge 4 2 Curve concave lens 5 8 Curve convex lens 6 Conventional washer 7 Nut 8 Screw 9 Lens 10 Dummy lens 11 Screw hole 12 Holding base 13 pins

Claims (1)

[Claims] 1. A washer for rimless spectacles, comprising a convex curved surface on at least one surface of a washer used in contact with a lens surface when assembling a lens of rimless spectacles and spectacle parts.