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Shielding device of portable DVD player and complete machine having the same

A technology of shielding device and video disk player, which is applied in the fields of magnetic field/electric field shielding, reduction of physical parameters of carriers, instruments, etc. It can solve problems such as endangering the health of operators, increasing production costs, rework, etc., and achieves product quality that is easy to guarantee and replace Convenience, the effect of avoiding harmful electromagnetic radiation

Inactive Publication Date: 2006-09-20
江苏常州武新产业投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of this solution are: First, in order to achieve the effect of complete shielding, the electroplating process requires high requirements, and the metal paint on the electroplating must be very uniform. In actual operation, rework is often easy to occur, which affects work efficiency. , Increased production costs; Secondly, in the process of electroplating operations, the damage to the environment is obvious, and it seriously endangers the health of operators

Method used

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  • Shielding device of portable DVD player and complete machine having the same
  • Shielding device of portable DVD player and complete machine having the same
  • Shielding device of portable DVD player and complete machine having the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (the circuit board shielding device of embodiment 1 portable DVD video disk player)

[0025] See figure 1 , circuit board shielding device 3 comprises circuit board 32, loam cake 31, base 33, polycarbonate sheet 34 and screw 35; Circuit board 32 is positioned between loam cake 31 and base 33; Polycarbonate sheet 34 liners are on loam cake 31 and the circuit board 32, in case the conductive element on the upper cover 31 and the circuit board 32 contacts, based on the same reason polycarbonate sheet 34 also can be used between the circuit board 32 and the base 33; Screw 35 connects the upper cover 31 and the ground wire of the circuit board 32. See figure 2 , the upper cover 31 of the circuit board shielding device 3 is a stamped steel part, has a plane and a vertical side extending downward from the edge of the plane, and the lower edge of the side has an outwardly protruding convex strip 31-3 (see image 3 ), which is used to fasten with the base 33, and the convex ...

Embodiment 2

[0028] (Embodiment 2 has the portable DVD player of above-mentioned circuit board shielding device)

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PUM

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Abstract

The invention relates to a screening device for a portable DVD player, providing a reliable circuit board screening device, comprising a circuit board, where conductive top cover and base are arranged above and below the circuit board, respectively, and the top cover and the base are fastened together to make the circuit board located between the top cover and the base; besides, the top cover or the base is earthed.

Description

technical field [0001] The invention relates to a shielding device for a portable DVD player. Background technique [0002] Most of the casings of portable DVD players on the market are made of plastic, which makes the whole machine lighter and lighter, but it also brings about a problem of electromagnetic shielding. Because the video disk player with a metal casing originally had a shielding function; now that the casing is made of plastic, it is necessary to solve the problem of circuit shielding caused by it. [0003] The current popular method is to electroplate a layer of metal paint on the inside of the casing of the portable DVD player to make it have a shielding function. However, the disadvantages of this solution are: First, in order to achieve the effect of complete shielding, the electroplating process requires high requirements, and the metal paint on the electroplating must be very uniform. In actual operation, rework is often easy to occur, which affects work...

Claims

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Application Information

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IPC IPC(8): G11B33/00G11B33/14H05K9/00
Inventor 秦志尚虞立新
Owner 江苏常州武新产业投资有限公司
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