JPH08327953A - Method for fixing lens of spectacles - Google Patents

Abstract

PURPOSE: To prevent the damage of lenses and to improve safety and appearance. CONSTITUTION: This method for fixing the lenses comprises arranging washers 3 consisting of an elastic material on both sides of the lens 1, bringing a supporting part 6 of a fixture 5 into contact with the surfaces of the washers 3 opposite to the lens 1, passing the leg part 11 of a screw 10 through the lens 1, the washers 3 and the supporting part 6 of this fixture 5, screwing a nut 20 to this leg part 1 to the elastic limit of the washers 3 and further, cutting off the leg part 11 projected from the nut 20 and just slightly loosening the screw 10 and the nut 20. Since the washers 3 are the elastic material, the screw 10 and the nut 20 remain tight without loosening even if the screw 10 and the nut 20 are combined and tightened to each other. The projecting leg part is cut off and the screw and the nut are just slightly loosened again after the nut 20 is screwed to the leg part and, therefore, even if the end face of the leg part is sharp, this end face is eventually sunk into the nut 20 and the lens 1 is kept free from flawing. Further, the safety is assured and the aesthetic appearance is not impaired.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens fixing method for use in eyeglasses without a frame, and more particularly to a lens fixing method in which the temple of the eyeglass is directly openably and closably fixed to the lens via a fixture.

[0002]

2. Description of the Related Art In frameless glasses, which have been increasing in number of users recently, frameless eyeglasses are generally provided with resin washers on both sides of the lens, and the washer is openably and closably connected to one of the washers. Under the present circumstances, the lens is attached by bringing the supporting portion of the fixture into contact with each other, and the leg portion of the screw is screwed into the nut through the washer, the lens and the supporting portion to be integrally fixed.

[0003]

In such spectacles, since the washer used for this is made of resin, when these screws and nuts are combined and tightened together, the resin is plastically deformed and elastic When these glasses are used for a long time, there is looseness between the screw and the nut. In addition, since this screw cuts off the leg portion protruding from the nut after screwing the nut onto the leg portion, the cut end face of the leg portion becomes sharp, so after cutting this end face with a blade, It is necessary to correct it by cutting with a file. Furthermore, in this sanding work, there are problems such as scratches on the lens and shavings entering the gap.

The object of the present invention is to solve the above-mentioned problems and to allow the tip of the leg portion of the screw to enter the end face of the nut.
It is to improve safety and aesthetics.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a pair of elastic washers 3 on both sides of the lens 1 in a pair of spectacles including a temple 4, a fixture 5, and a lens 1 held by the fixture 5. The washer 3 is placed, and the supporting portion 6 of the fixture 5 is brought into contact with the surface of the washer 3 opposite to the lens 1, and the leg 11 of the screw 10 is attached to the supporting portion 6 of the lens 1, the washer 3 and the fixture 5.
Through which the nut 20 is screwed to the elastic limit of the washer 3 and the leg 11 protruding from the nut 20 is cut off, and then the screw 10 and the nut 20 are loosened only slightly. This is accomplished by providing a fixation method.

[0006]

The elastic washer 3 is arranged on each side of the lens 1 at a position corresponding to the fixing hole 2 formed at a desired position of the lens 1. Then, the position of the support hole 7 of the support portion 6 of the fixture 5 connected to the temple 4 on the surface of the one washer 3 opposite to the lens 1 is aligned with the fixing hole 2. After this, screw 1 from one side of lens 1
The leg 11 of No. 0 penetrates these holes 2 and 7, and the nut 20 is screwed into the penetrating leg 11.

In this way, when the screw 10 and the nut 20 are screwed together and the elastic body is bent within the elastic limit and the screwing is completed with a predetermined screwing force, the leg portion 11 is fixed to the nut 20. It is in a state of protruding by a predetermined amount from the end face of the. Then, the protruding leg portion 11 is cut with a blade at a position close to the end surface of the nut 20. Subsequently, when the nut 20 is loosened slightly, the leg portion 11 of the screw 10 is
The tip of the will be immersed in the nut 20.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is a lens for spectacles. A fixing hole 2 is formed near the outer periphery of the lens 1, and a washer 3 made of an elastic material having a hole on the same center line as the fixing hole 2 is arranged on both sides of the lens 1 so as to sandwich the lens 1. There is. The elastic body forming the washer 3 is silicone rubber,
Examples include fluorosilicone rubber, fluororubber, butadiene rubber, chlorinated polyethylene rubber and the like.

Further, one of these washers 3 is provided with a vine 4
A flat support portion 6 formed on an attachment tool 5 that is openably and closably connected is in contact with one end of the support portion 6, and a support hole 7 similar to the fixing hole 2 of the lens 1 is also formed in this support portion 6. There is. The lens 1, washer 3 and support hole 7 of the support portion 6 are all on the same center line. As shown in FIG. 2, the leg portion 11 of the screw 10 is inserted into these holes 2 and 7, A nut 20 is screwed onto the portion 11.

Therefore, as shown in FIG. 1, the lens 1 is sandwiched between the fixing holes 2 of the lens 1 by a washer 3 made of an elastic material. After that, the support portion 6 of the fixture 5 is further pressed against the end face of the one washer 3 to align the fixing hole 2 and the support hole 7 of the support portion 6 on the same center line. In this way, the screw 10 having the leg portion 11 of a predetermined length is inserted into the holes 2 and 7 with the leg portion 11 first. Leg 1
When 1 is penetrated, the tip of this leg 11 will be
The nut 20 is screwed into the leg portion 11 near the elastic limit point of the washer 3 made of an elastic body. As a result, the washer 3 is compressed and deformed, but the lens 1 and the fixture 5 are integrally fixed.

After the lens 1 is thus fixed by the screw 10 and the nut 20, the leg portion 11 of the screw 10 protruding from the end face of the nut 20 is brought close to the end face of the nut 20 with a blade (not shown). Cut from the position you made. As a result, the unnecessary leg portion 11 is cut off, and a sharp cutting surface 12 is obtained as shown in FIG. After that, if the nut 20 is loosened slightly with respect to the screw 10, in this embodiment,
Return the thread of the screw 10 by one pitch. As a result, the washer 3 is slightly restored by the elastic force, but the lens 1 and the fixture 5 are still firmly fixed. still,
The loosening amount of the nut 20 may be 1 pitch or more or 1 pitch or less as long as the washer 3 has a repulsive force.

Further, the sharp cutting surface 12 of the leg portion 11 of the screw 10 is immersed in the nut 20, and the cutting surface 12 is hidden by the nut 20, so that the aesthetics of the spectacles are not spoiled. On the other hand, since the cutting surface 12 is slightly deformed by the cutting work, it engages with the internal thread of the nut 20 and also serves as a locking stopper for the screw 10 and the nut 20.

[0013]

As is apparent from the above-described embodiments, the present invention provides the spectacles including the temple 4, the fixture 5, and the lens 1 held by the fixture 5, and elastically extends on both sides of the lens 1 with the lens 1 interposed therebetween. Place the washer 3 on the body, and this washer 3
The supporting portion 6 of the fixture 5 is brought into contact with the surface opposite to the lens 1 of
A leg portion 11 of a screw 10 is passed through the supporting portion 6 of the lens 1, washer 3 and fixture 5, and the nut 2 is attached to the leg portion 11.
0 is screwed to the elastic limit of the washer 3, and the leg portion 11 projecting from the nut 20 is cut off.
This is a lens fixing method in which 0 and the nut 20 are slightly loosened.

As described above, since the washer used for this is an elastic body, even if the spectacles in which these screws and nuts are combined and fastened to each other are used for a long time, the elastic body causes the screws and nuts to There is no looseness between. In addition, after screwing the nut onto the leg, this screw cuts off the leg protruding from the nut and removes it.
Since the screws and nuts are slightly loosened again, even if the cut end surface of the leg is sharp, this end surface will be immersed in the nut, and the lens will be scratched or the shavings will enter the gap during the file work. There will be nothing. Further, it is possible to obtain a peculiar effect such as being safe and not impairing aesthetics.

[Brief description of drawings]

FIG. 1 is a cross-sectional front view of essential parts showing an arrangement state of components of the present invention.

FIG. 2 is a cross-sectional front view of essential parts showing a state where a lens is fixed with a screw and a nut.

FIG. 3 is a sectional front view of an essential part showing an assembled state according to the present invention.

[Explanation of symbols]

 1 Lens 2 Fixing Hole 3 Washer 4 Vine 5 Mounting Tool 6 Support 7 Support Hole 10 Screw 11 Leg 12 Cut Surface 20 Nut

Claims (1)

[Claims] 1. In a spectacle comprising a temple 4, a fixture 5, and a lens 1 held by the fixture 5, elastic washers 3 are arranged on both sides of the lens 1 and the washer 3 is used.
The supporting portion 6 of the fixture 5 is brought into contact with the surface opposite to the lens 1 of FIG. 1, and the leg portion 11 of the screw 10 is penetrated through the support portion 6 of the lens 1, the washer 3 and the fixture 5, and the nut portion A lens fixing method characterized in that 20 is screwed to the elastic limit of the washer 3, the leg portion 11 protruding from the nut 20 is cut off, and then the screw 10 and the nut 20 are slightly loosened.