JPS598980A - Production of pressure resistant, waterproof and anti-haze underwater goggle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing pressure-resistant, waterproof, and anti-fog underwater goggles made of plastic flat lenses provided with lenses.

Conventional pressure-resistant and waterproof underwater goggles are manufactured by integrating lenses and frames by plastic injection molding. Since the lenses of these glasses fog up during use, various methods have been used to prevent fogging, but none of them has been satisfactory. Recently, a method has been developed for coating the surface of a tough transparent plastic plate with an anti-fog film. That is, when an epoxy resin solution is sprayed onto the surface of a transparent plate made of cellulose probionate resin and cured, a non-peelable A-resistance film is formed. This anti-fogging film does not melt even at a temperature of 200°, so a plastic lens coated with this anti-fog cannot be adhered to a plastic frame by normal methods.

The present invention succeeded in achieving this bonding by applying ultrasonic waves. In other words, the side surface of a plastic lens fully coated with an anti-fog film has a temperature of 15% because the anti-fog film is not coated on it.
Melts between 0°0 and 200°0.

Therefore, the side surface of the lens and the inner wall surface of the eyeglass frame can be simultaneously melted and bonded using ultrasonic waves.

4. At this time, when the melted part of the inner wall of the eye is pressed down with a knurled horn of an ultrasonic generator, it covers the edge of the lens from above and imparts pressure resistance to the glasses.

The manufacturing method of the present invention will be explained in detail with reference to the drawings.

1 eyeglass frame As shown in Figure 1, this is a plastic molded product having an upper edge 4, a middle edge 5, and an inner edge 6.As shown in Figure 6, the upper edge 4 and middle edge 5 are stepped. The wall of the receiving frame 6 has a slope. The lens 2 is made by punching a cellulose propionate resin having an anti-fogging film into a suitable shape such as a circle or an oval. Since the cut side surface of the lens 2 is not coated with a protective film, it is melted by ultrasonic waves at 150'0 to 200c. As shown in FIG. 6, the lens 2 is brought into close contact with the inner edge 5 of the frame 1 with its side surface, and as shown in FIG. Place the knurled tip 7 across the inner wall edge 5 of the frame and the periphery of the lens 2 while applying appropriate pressure, and apply ultrasonic waves for 0.4 seconds to instantly melt the inner wall of the frame and the side surface of the lens 2. Then, as shown in FIG. 8, the lens 2 is pushed down to the bottom of the inner edge 6, and at the same time, the bottom surface of the upper edge 4 melts and the knurling is carried, and the edge of the lens 2 is pushed down from above by the knurled edge 9. Glue it by sandwiching it in place.

The underwater glasses of the present invention are waterproof because the edges of the frame 1 and the edges of the lenses are melted and fixed, and the edges of the lenses are pressure-resistant because the upper and lower surfaces are sandwiched and bonded by the edges of the frame. There is also gender.

As one of the embodiments of the present invention, the outer diameter is 46 mm for the long axis and 3 mm for the short axis.
A cellulose propionate resin eyeglass frame with an oval shape of 2 mm and a frame wall thickness of 5 mm and a frame length of 10 mm, and a cellulose propionate resin lens with a 1.5 mm thick anti-fog film. The eye ψ made by the above manufacturing method is 80'
It was immersed in 0.0 warm water for 2 hours, then pulled out and subjected to an underwater pressure test at 2 atmospheres, but it did not leak or break, proving that it had sufficient pressure resistance and waterproofness. As mentioned above, it can be said that the manufacturing method of the present invention is novel and useful.

[Brief explanation of drawings]

FIG. 1 is a plan view of the eyeglass frame of the present invention, FIG. 2 is a plan view of the lens of the present invention, FIG. 3 is a side view of the lens, FIG. 4 is a schematic cutaway side view of the horn of the ultrasonic generator, and FIG. Figure 5 is a bottom view of the horn shown in Figure 4, Figure 6 is a cutaway side view of the lens inserted into the eyeglass frame, and Figure 7 is a side view of the eyeglass frame shown in Figure 6 placed on a pedestal and inserted into the frame from above using the tip of the horn. FIG. 8 is a cut side view of the completed eyeglasses of the present invention in which the inner edge and the peripheral edge of the lens are pressed together and no ultrasonic waves are applied. 1. Eyeglass frame, 2. Lens, 3. Ultrasonic generator pawn, 4. Upper edge of frame, 5. Middle edge of frame, 6
The inner edge of the frame, 7. The knurled tip of the horn, 8.
Cable, 9...Knurled edge. Applicant: Shigeru Shi Yan

Claims (1)

[Claims] The inner wall of the plastic eyeglass frame consists of an upward edge, a middle white edge, and an inner edge.The upward edge and inner white edge are stepped, and the inner wall is sloped. Make a lens, fit the lens tightly into the inner edge of the eyeglass frame, place it on the pedestal of the ultrasonic generator, and insert the knurled end of the horn of the ultrasonic generator from above onto the inner edge of the frame. Place the lens by applying appropriate pressure across the rim and the periphery of the lens, apply ultrasonic waves for 0.3 to 0.5 seconds to instantly melt the inner wall of the frame and the side of the lens, and press the lens to the bottom of the rim of the hall. The sides of the lens and the wall of the inner edge of the hall are then welded together, and at the same time, the stepped surface of the upper edge is melted and knurled to cover the edge of the lens from above, and this is glued to the inner wall of the frame to create a pressure-resistant waterproof structure. A method for manufacturing anti-fog underwater glasses.