CN2129445Y

CN2129445Y - High-fidelity video-cassette

Info

Publication number: CN2129445Y
Application number: CN 92213672
Authority: CN
Inventors: 毛荣之
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-13
Filing date: 1992-04-13
Publication date: 1993-04-07
Anticipated expiration: 2002-04-13

Abstract

The utility model discloses a high-fidelity video tape box with the shielding action. The utility model can be used for preserving video tape or preventing the face of the computer disk interfering from the foreign magnetic field. The utility model is fabricated by adopting the principle of the magnetic shield. The utility model is characterized in that a rectangular box and a box cover are fabricated by the soft iron sheet; the inner lining of the box is fabricated by soft-magnetic lining attaching material; if user use the box for storing the video tape, the video tape can avoid the interference and pollution from the foreign magnetic field, so that the utility model has the high-fidelity effect.

Description

High-fidelity video-cassette

The utility model relates to the box of a kind of phonotape and videotape, information-based reproducer, especially video-tape and computer disk.

The box of existing preservation video recording is all papery or plastic products, because the interference effect (as magnetic fields that electrical equipment and lead thereof distributed such as radio cassette player, televisor, refrigerators) of external electromagnetic field, under the combined action of various disturbing magnetic fields, produce stronger magnetic-pulse sometimes, time is long slightly, the magnetic of video-tape can change the original situation of arranging gradually, and the sound of being recorded, as distorting gradually makes its video reproduction degradation.

The purpose of this utility model is to design a kind of novel box for overcoming above-mentioned weak point, and it is to make according to the principle of electromagnetic screen, because of the magnetic permeability of soft magnetic material is 10 of an air ³～10 ⁴Doubly, soft magnetic material is made cavity is positioned in the magnetic field, the magnetic line of force will along outside surface by and seldom enter cavity, its inner space is not subject to the influence of external magnetic field.The utility model is the box made from soft magnetism or soft magnetism lining enclosure material, it is made up of square or rectangle box and lid, can also make is the combined box that barrier and casing are formed, these boxes are because magnetic screening action, the interior video-tape of containing can be avoided the interference and the pollution of external magnetic field, has " high-fidelity " effect.Simultaneously the outside surface of box also can be decorated with picture attractive in appearance, in order to effect such as to beautify the environment.

Description of drawings:

Fig. 1 is side loading type box-shaped structure figure of the present utility model.

Fig. 2 is a side of the present utility model loading type lid structural drawing.

Fig. 3 is the box and the lid structural drawing of horizontally mounted formula of the present utility model.

Fig. 4 is combined type box-shaped structure figure of the present utility model.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail: as shown in Figures 1 and 2, it comprises box body (1), back-up ring (2), box body liner (3), lid (4) and lid liner (5) embodiment a, box body (1) is the rectangle housing that becomes with the soft iron leather, one openend is arranged, back-up ring (2) is the rectangle circle made from thin iron bar, it is fixed in the openend top of box body, box body liner (3) is the liner that is made into flexible material, as making, be vibrations and bump in order to alleviate video-tape and box body with polyfoam; Lid (4) is to be the rectangle housing of opening with the side that the soft iron leather makes, and lid liner (5) is made with flexible material.Embodiment b as shown in Figure 3, it is made up of box body (1), rotating shaft (6), box body liner (3), lid (4) and lid liner (5), wherein box body (1) and lid (4) all are square shell bodies made from soft iron skin or permalloy material, the equal punching out in box body (1) both sides, front goes out two strip projected parts, also respectively there is a strip projected parts on the both sides of its back, projection two is porose, the rotating shaft (6) of being convenient to pack into, the corresponding site of lid (4) also punching out go out with box body (1) to go up the reverse strip recess that strip projected parts matches; Lid liner (5) and box body liner (4) are all made with flexible material, box body liner (3) is arranged in the box body (1), two positioning convex round platforms of being convenient to adorn video cassette are arranged at its bottom, its upper end, front also has the projection of two semi arches, so that the location of loam cake and box body, with rotating shaft (6) box body (1) and lid (4) are flexibly connected, lid (6) rotation is around the shaft dug.Embodiment c, as shown in Figure 4, it is made up of box body (1), hinge (7), knob (8), lid (4) and barrier (9), wherein box body (1) is a rectangular case, the lid (4) that the useful hinge in its front openings place (7) connects, lid (4) is the rectangular door made from soft iron, door is made up of two fan clamshell doors, seal with aluminium alloy around it, use knob (8) locking in the middle of the two fan doors; Barrier (9) is the rectangular flat made from soft iron, it is connected with box body (1), available welding or gluing connecing, can also be injection molded into the barrier general frame with duroplasts, then barrier framework integral body is packed in the box body, also available square or cylindrical hollow duroplasts cover or wooden unit are made the barrier locations spaced, and be fixing with the thru-bolt series connection again, with bolt itself and box body are connected and fixed then, this knockdown box can be deposited a plurality of video-tapes simultaneously.

Change the overall dimensions of above-mentioned various boxes, utilize soft magnetism or soft lining enclosure material, can make and deposit the box that computer disk is used, also can be made into other needs antimagnetic instrument, instrument box.

Claims

1, a kind of high-fidelity video cassette of depositing video-tape that is applicable to, it is made up of box body (1), back-up ring (2), box body liner (3), lid (4) and lid liner (5); Of the present utility model being characterised in that: box body (1) and lid (4) are the rectangular case of an end opening that becomes with slim soft iron leather, the openend external fixation of box body (1) has back-up ring (2), its inner chamber has box body liner (3), and lid liner (5) is arranged in the lid (4).

2, high-fidelity video cassette according to claim 1, it is characterized in that: the equal punching out in one side both sides of described box body (1) opening front goes out two strip projected parts, also have two semi-circular projection on its upper end-face edge, also respectively there is a strip projected parts on the both sides of its corresponding side, two of projection is porose, and two positioning convex round platforms of being convenient to adorn video cassette are arranged at its bottom.

3, according to the said high-fidelity video cassette of claim 1, it is characterized in that: described lid (4) also has the reverse strip recess that matches with box body (1) strip projected parts, box body and lid is connected with rotating shaft in the strip indent.

4, high-fidelity video cassette according to claim 1 is characterized in that: the plate barrier that useful soft iron is made in the described box body (1), barrier is composed in series by the polylith flat board.

5, high-fidelity video cassette according to claim 4 is characterized in that: described barrier is the framework that is connected into by soft spacer block made of iron, also can be by the injection molded barrier general frame of duroplasts.

6, according to claim 1 and 4 described high-fidelity video cassettes, it is characterized in that: said box body (1) is connected with hinge with lid (4).

7, according to the said high-fidelity video cassette of claim 1, it is characterized in that: said box body (1) and lid (4) can also be made with permalloy.