CN2278987Y - Laser phonogrph record protection plastic cover - Google Patents

Abstract

The utility model relates to a laser record protecting rubber sleeve which is the discoid rubber sleeve which is made with a photic transparent plastic as integration. The shape is corresponding to a laser record hollow circular ring body, the outer edge of a rubber sleeve is provided with a step-shaped cushion ring which is bulged upwards, and the outer edge of the cushion ring is provided with a side frame which is upward and is slightly tilted towards the center. The outer side of a circular hole at the center of the rubber sleeve is convexly provided with a concentric convex loop, the position between the convex loop and the cushion ring is provided with a plane colloid, and the rubber sleeve is sheathed with the laser record. A convex wall at a reading surface of a record is abutted on the inner edge of the convex loop of the rubber sleeve, and a loop wall is sheathed with a side frame at the outer edge of the rubber sleeve. The concave loop and the cushion ring have the same height and form a small gap with the reading surface of the laser record to generate the actions of isolation and protection and prevent the surface of the laser record from scraping and polluting by dust, so signal quality on the laser record is not affected.

Description

Laser disc protection gum cover

The utility model relates to a kind of annex of instrument area information storage record carrier, particularly relates to a kind of laser disc protection gum cover of new structure.

Laser disc is the circular disc of a hard colloid, its place, axle center offers a circular hole, be provided with thin helicla flute at bottom side, the top side is arranged with reflective side, if carefully see, the different reflection angle of etching angle in the thin helicla flute groove, this kind reflection angle is for the laser optical head emission that is positioned at the laser bench below and receives LASER Light Source with the signal on the intercepting laser disc, and read its numerical digit signal, become incomparable graceful music through conversion of signals again, according to sound technique now, store the numerical digit signal with laser and come true, and between laser disc and read/write head, remained a segment distance, also there is not early stage stylus, magnetic head touches data, the problem that causes the data mill to lose after the experience wear; Yet laser disc also has the defective of early stage disc, be that it is subject to scratch and causes the laser and/write head when the injury is scraped in read-write, can produce wrong signal, its reason promptly as described above the data of laser disc read, be to penetrate by the reflexed of light, if laser disc is infected with dust at read/write surface for read, then also can produce the phenomenon of disorderly getting as above-mentioned wrong signal.

Because the drawback that above-mentioned traditional product exists, the design people is based on abundant practical experience and professional knowledge, through constantly studying, design, and after studying sample repeatedly and improving, creates the utility model finally.

Fundamental purpose of the present utility model is; overcome the defective of prior art; and the laser disc that a kind of new structure is provided is protected gum cover; make it effectively improve the existing bad phenomenon of above-mentioned laser disc; and under the state that does not damage laser disc, design a kind of isolation structure that forms protective effect, have and to prevent that laser disc from being scraped and injure dust pollution; the unlikely effect that influences laser disc signal quality can not take place to regret because of the data damage.

The purpose of this utility model is to be realized by following technical scheme.A kind of laser disc protection gum cover of new structure; it is one by having the one-body molded discoid gum cover of making of the splendid clear plastic material of toughness and transmittance; it is shaped as the hollow circular ring body of corresponding matching laser disc; its outer rim at gum cover is provided with a stepped gasket ring that raises up; be provided with one in the outer rim upper edge of gasket ring and extend upward a suitable height and a centroclinal slightly frame; and the centre of gum cover is provided with the internal diameter that a circular hole is a gum cover; convex with a concentric bulge loop that is the  type in the outside of its circular hole; and this bulge loop to be convexly equipped with direction identical with gasket ring and contour, then link between bulge loop and the gasket ring have one transparent and be the colloid of smooth flat.When gum cover and laser disc be nested fashionable; the protruding wall of laser disc data reading face just and the gum cover internal diameter to be the bulge loop inner margin portion of  type projection inconsistent; the frame of the ring wall of laser disc and gum cover outer rim fit mutually simultaneously; this frame is for slightly sloping inwardly again; its frame is held to be positioned on the laser disc; bulge loop and gasket ring have an identical height in addition, and form a little space between the data reading face of laser disc, and the protective effect that can produce isolation structure.

The purpose of this utility model can also further realize by following technical measures.Aforesaid laser disc protection gum cover; it can be designed to stepped body upwards the bulge loop of wherein said gum cover; extend the colloid on a plane again by stair-stepping upper end; on the edge of colloid outer end, be provided with an annular peripheral frame; when laser disc is combined with the protection gum cover; can reach the state of complete driving fit, can prevent dust, make moist, infringement such as scratch.

The utility model compared with prior art has tangible advantage and good effect.By above technical scheme as can be known; the laser disc protection gum cover of the utility model new structure; be one by having toughness and transparent plastic cement material through the one-body molded gum cover of making; can be mounted on the data reading face of laser disc; and its shape size is for cooperating laser disc; outer rim at gum cover is provided with a stepped gasket ring that raises up; and be provided with upwardly extending frame in the outer rim upper edge of gasket ring; and the outside of center hole; then be provided with the bulge loop of a  type; binding plane between this bulge loop and gasket ring is a colloid; when gum cover and laser disc be nested fashionable; the protruding wall meeting bulge loop inner margin portion proper and gum cover of laser disc data reading face is inconsistent; its outer rim place just can be seated on the gasket ring of gum cover outer rim simultaneously; be to be slightly to slope inwardly because of frame again; so laser disc is mounted on the gum cover; and make and form a little space between the data reading face of laser disc and colloid; produce a kind of protective effect of isolation; can prevent scratch laser disc surface and dust pollution, and unlikelyly have influence on signal quality on the laser disc.

In sum; the laser disc protection gum cover of the utility model new structure; for by toughness and the transparent integrated gum cover of plastic cement material; the hollow circular ring shape body of the corresponding laser disc of its shape; and can be mounted on the data reading face of laser disc; it has designed a kind of isolation structure that forms protective effect; can effectively improve the bad phenomenon that laser disc exists; and under the state that does not damage laser disc; have and to prevent that laser disc from being scraped and injure dust pollution; the unlikely effect that influences laser disc signal quality; can not take place to damage the situation of regretting because of data; thereby be suitable for practicality more, no matter it structurally or all have on the function significantly and to improve, really is a novelty; progressive; practical new design.

Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Fig. 1 is an exploded perspective sectional view of the present utility model.

Fig. 2 is the local amplification view of A portion among Fig. 1.

Fig. 3 is a combination stereogram of the present utility model.

Fig. 4 is a unitized construction sectional view of the present utility model.

Fig. 5 is the unitized construction sectional view of the another kind of structure of the utility model.

Below in conjunction with accompanying drawing and preferred embodiment, to its concrete structure of laser disc protection gum cover, feature and effect thereof according to the new structure that the utility model proposes, describe in detail as after.

See also Fig. 1; shown in Figure 2; the laser disc protection gum cover of the utility model new structure; it has by being rich in the splendid clear plastic material of toughness and transmittance; through an one-body molded and discoid gum cover 3 that make; it is shaped as the hollow circular ring shape body of corresponding matching in laser disc 1; outer rim at gum cover 3 is provided with a stepped gasket ring that raises up 8; be provided with one in the outer rim upper edge of gasket ring 8 and extend upward one suitably highly; and centroclinal slightly frame 6; and being provided with a circular hole 5, the centre of gum cover 3 is the internal diameter of gum cover 3; convex with a concentric bulge loop 7 that is the  type in the outside of its circular hole 5; and this bulge loop 7 to be convexly equipped with direction identical and contour with gasket ring 8, then link between bulge loop 7 and the gasket ring 8 have one transparent and be the colloid 4 of smooth flat.

See also Fig. 3, shown in Figure 4, when the utility model is implemented to use, its structure and using method are that the data reading face of laser disc 1 is downward, corresponding storing is gone on the face that has bulge loop 7 and gasket ring 8 in the gum cover 3, and make laser disc 1 be laminated with fully ground frame be located in the gum cover 3, because of frame set on the gasket ring 86 for slightly to centroclinal, and can support frame and be clipped on the external annulus of laser disc 1, so make being mounted on the gum cover 3 that laser disc 1 can be more stable.

Other sees also shown in Figure 4; be the unitized construction sectional view after the utility model combination; can understand the mutual shrink-fit structure state of its each several part among the figure; wherein; laser disc 1 covers on the gum cover 3; make protruding wall 2 parts of its laser disc 1; just and gum cover 3 to be the inner margin portion of bulge loop 7 of  type projection inconsistent; highly be contour because of being convexly equipped with of bulge loop 7 and gasket ring 8 simultaneously; and make the data reading face of laser disc 1 and 4 in colloid retain a little space 9; to produce the guard mode of isolating; and make it can reach scratch resistant to injure the effect that prevents dust, and this kind laser radiation gum cover has substitutability, even gum cover 3 is scraped damage; also can not injure the data on its inner laser disc 1, get final product and only need replace down gum cover 3.

See also shown in Figure 5; embodiment for the another kind of structure of the utility model; in structure design of the present utility model; the structurally variable of laser disc protection gum cover product turns to the structure shown in the figure; wherein; a stepped body that makes progress is changed at former bulge loop 7 positions; extend the colloid 4 of a surface level again by this stepped body that makes progress; upwards be provided with the frame 6 of an annular at the external end edge of colloid 4; when laser disc 1 is combined with protection gum cover 3; its colloid 4 can be fitted with the data reading face of laser disc 1, and it is dustproof that the structure that so fits tightly also can reach; moistureproof; anti-scratch effect.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the scope of technical solutions of the utility model according to the utility model technical spirit.

Claims (2)

1, a kind of laser disc protection gum cover, it is one by having the one-body molded discoid gum cover of making of the splendid clear plastic material of toughness and transmittance, the hollow circular ring body that it is shaped as the corresponding matching laser disc is characterized in that:

Outer rim at gum cover is provided with a stepped gasket ring that raises up, be provided with one in the outer rim upper edge of gasket ring and extend upward a suitable height and a centroclinal slightly frame, and the centre of gum cover is provided with the internal diameter that a circular hole is a gum cover, convex with a concentric bulge loop that is the  type in the outside of its circular hole, and this bulge loop to be convexly equipped with direction identical with gasket ring and contour, then link between bulge loop and the gasket ring have one transparent and be the colloid of smooth flat.

2, laser disc according to claim 1 protection gum cover, it is characterized in that described gum cover bulge loop its can be designed to stepped body upwards, extend the colloid on a plane again by stair-stepping upper end, on the edge of colloid outer end, be provided with an annular peripheral frame.

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