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
0 Cites 0 Cited by

AI-Extracted 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 operat...
View more

Method used

See Fig. 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 pads between the upper cover 31 and the circuit board 32, in order to prevent the contact between the upper cover 31 and the conductive elements on the circuit board 32, polycarbonate sheet 34 can also be used between the circuit board 32 and the base 33 for the same reason ; The screw 35 connects the ground wire of the loam cake 31 and the circuit board 32 . As shown in Fig. 2, the upper cover 31 of the circuit board shielding device 3 is a stamped steel part, which 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 Fig. 3), be used for fastening with base 33, this protruding line 31-3 is also formed by sta...
View more

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.

Application Domain

Magnetic/electric field screeningRecord information storage +1

Technology Topic

DVD playerEngineering +1

Image

  • 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(2)

Example Embodiment

[0024] (Example 1 Circuit board shielding device of portable DVD player)
[0025] see figure 1 The circuit board shielding device 3 includes a circuit board 32, an upper cover 31, a base 33, a polycarbonate sheet 34 and screws 35; the circuit board 32 is located between the upper cover 31 and the base 33; the polycarbonate sheet 34 is lined on the upper cover Between 31 and the circuit board 32, to prevent the upper cover 31 from contacting the conductive elements on the circuit board 32, for the same reason, the polycarbonate sheet 34 can also be used between the circuit board 32 and the base 33; the screw 35 connects the upper cover 31 and circuit board 32 ground. see figure 2 , The upper cover 31 of the circuit board shielding device 3 is a steel stamping piece, with a flat surface and a vertical side extending downward from the edge of the flat surface. The lower edge of the side has an outwardly protruding convex strip 31-3 (see image 3 ), used to buckle with the base 33, the convex strip 31-3 is also integrally stamped and formed by the side; the plane part of the upper cover 31 is provided with a threaded hole 31-1 for mounting the screw 35, so that the upper cover and the circuit board 32 Threaded hole 32-1 is also provided in the corresponding position of the host circuit board. The threaded hole 31-1 can also be set on the base 33, and the mounting screw 35 makes the base and the host circuit board 32 The ground wire of the upper cover 31 and the base 33 can also be connected to ground; the flat part of the upper cover 3 is also opened with evenly distributed circular heat dissipation holes 31-2, the purpose is to accelerate the heat dissipation of the circuit board 32; the upper cover 31 side There are irregular notches 31-4 on the side, which is convenient for accommodating the electronic components on the circuit board 32 when it is matched and installed.
[0026] see Figure 4 The general shape of the base 33 of the circuit board shielding device 3 is the same as that of the upper cover 31, which is a steel stamping piece. The plane part of the base 33 is provided with a circular heat dissipation hole 33-2, which corresponds to the upper cover 31, which has an inward protrusion at the lower edge of its side. Of the convex strip 33-3 (see Figure 5 ), can be buckled with the protruding strip 31-3 of the upper cover 31 and make the buckling portion of the upper cover 31 and the base 33 close contact under the action of elastic force.
[0027] It should be noted that during installation and use, there are many gaps on the side of the shielding device. That is the gap between the upper cover and the side of the base. It should be carefully sealed with conductive tape to minimize the leakage to enhance the shielding effect.

Example Embodiment

[0028] (Embodiment 2 Portable DVD video disc player with the above-mentioned circuit board shielding device)

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Similar technology patents

Vertical face sealing strips for guide vanes of water turbine

InactiveCN101793220Aeasy to replaceEasy to install
Owner:天津市发电技术设备有限公司

Roller press and high pressure roller mill combination set roller shaft

InactiveCN102274774AReduce difficultyProduct quality is easy to guarantee
Owner:CHENGDU LEEJUN IND

Extrusion type rubber bushing structure

Owner:CHERY AUTOMOBILE CO LTD

Air purifier with smooth ventilation function and automatic replacement prompt function

InactiveCN109838837Aeasy to replaceEnsure smooth ventilation
Owner:JIANGSU HUAXIA INTPROP SERVICE CO LTD

Classification and recommendation of technical efficacy words

  • Product quality is easy to guarantee

Roller press and high pressure roller mill combination set roller shaft

InactiveCN102274774AReduce difficultyProduct quality is easy to guarantee
Owner:CHENGDU LEEJUN IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products