CN215872354U

CN215872354U - Anti-electromagnetic interference multilayer high-frequency blind hole circuit board

Info

Publication number: CN215872354U
Application number: CN202122025367.7U
Authority: CN
Inventors: 李劲松
Original assignee: Shenzhen Pinbao Electronic Co ltd
Current assignee: Shenzhen Pinbao Electronic Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-18
Anticipated expiration: 2031-08-26

Abstract

The utility model belongs to the technical field of circuit boards, in particular to an anti-electromagnetic interference multilayer high-frequency blind hole circuit board, which aims at the problems of poor anti-vibration effect and inconvenient disassembly and assembly during maintenance of the circuit board in use, and provides the following scheme, wherein the circuit board comprises an isolation box and a circuit board body arranged in the isolation box, a placing plate is connected between the side walls at two sides of the isolation box in a sliding manner, a plurality of uniformly distributed contraction springs are fixed between the bottom end of the placing plate and the bottom end of the isolation box, and a top block is fixed at the bottom end of the placing plate; according to the utility model, the placing plate and the circuit board body are supported by the shrinkage spring, and the circuit board body is fixed and limited by the clamping plate and the positioning spring, so that the circuit board has better stability and anti-vibration effect when in use.

Description

Anti-electromagnetic interference multilayer high-frequency blind hole circuit board

Technical Field

The utility model relates to the technical field of circuit boards, in particular to an anti-electromagnetic interference multilayer high-frequency blind hole circuit board.

Background

The wiring boards are classified into three major categories, that is, single-sided boards, double-sided boards, and multilayer wiring boards, in which a multilayer board is formed by laminating three or more conductive pattern layers with insulating materials therebetween at intervals, and the conductive patterns therebetween are interconnected as required. The multilayer circuit board is a product of the development of electronic information technology in the directions of high speed, multifunction, large capacity, small volume, thinning and light weight.

When the multi-layer circuit board is installed and used, the multi-layer circuit board is generally embedded on an independent installation module to carry out isolation protection on other elements, electromagnetic interference caused by the influence of current of other elements when the multi-layer circuit board is used is avoided, the existing installation means is generally positioned and installed by welding or screw punching, although the stability is good, the anti-vibration capability is weak, the multi-layer circuit board is easy to damage when vibrated, the operation is inconvenient when the multi-layer circuit board is embedded and installed, and the later maintenance is also inconvenient to disassemble.

Therefore, there is a need for an anti-electromagnetic interference multilayer high-frequency blind-hole circuit board to solve the problems of poor vibration resistance and inconvenient disassembly and assembly during maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti-electromagnetic interference multilayer high-frequency blind hole circuit board, which solves the problems that the anti-vibration effect of the circuit board is poor in use and the circuit board is inconvenient to assemble and disassemble in maintenance.

In order to achieve the purpose, the utility model adopts the following technical scheme: an anti-electromagnetic interference multilayer high-frequency blind hole circuit board comprises an isolation box and a circuit board body arranged in the isolation box, a placing plate is connected between the side walls at the two sides of the isolation box in a sliding way, a plurality of contraction springs which are uniformly distributed are fixed between the bottom end of the placing plate and the bottom end of the isolation box, the bottom end of the placing plate is fixed with a top block, the inner wall of the bottom end of the isolation box is fixed with a sliding seat, the inner side wall of the sliding seat is connected with a movable sleeve in a sliding way, one end of the movable sleeve is fixed with a push block matched with the ejector block, a threaded rod is rotatably connected with the side wall of one side of the isolation box, a knob is fixed at one end of the threaded rod, the inner side wall of the movable sleeve is provided with an internal thread, the threaded rod and the movable sleeve are in threaded transmission, and positioning components matched with the placing plates are respectively arranged on two sides of the isolation box.

Preferably, the locating component include with keep apart the box and want two splint of side inner wall sliding connection, two splint are the symmetry and set up, and one side lateral wall that two splint kept away from each other all is fixed with two connecting rods, the bottom mounting of connecting rod has the extrusion piece, the both sides lateral wall of placing the board all is fixed with two fixed blocks, the fixed block cooperatees with adjacent extrusion piece, be fixed with the telescopic link that two symmetries set up between one side lateral wall of splint and the inner wall of keeping apart the box.

Preferably, the push block is in contact with the ejector block, and the contact surface of the push block and the ejector block is a matched inclined surface.

Preferably, the fixed block is in contact with the adjacent extrusion blocks, and the contact surfaces of the fixed block and the extrusion blocks are inclined surfaces matched with each other.

Preferably, the telescopic link include with the fixed flexible cover of isolation box inner wall the inside wall sliding connection of flexible cover has the slide bar, the one end and the splint of slide bar are fixed, the other end of slide bar with be fixed with positioning spring between the inner wall of flexible cover.

Preferably, the circuit board body is located place the top of board, the vertical section of splint is L shape, the inner wall and the circuit board body in close contact with of splint, place the bottom of board and offer a plurality of evenly distributed's louvre.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the placing plate and the circuit board body are supported through the contraction spring, the clamping plate and the positioning spring are matched to fix and limit the circuit board body, so that the circuit board has better stability and anti-vibration effect when in use, the reserved space is arranged at the bottom, the heat dissipation effect of the circuit board when in use can be improved, the limiting state of the lifting control clamping assembly for placing the plate on the circuit board body is controlled, so that the circuit board body is convenient and labor-saving to install, and the positioning is more accurate.

2. According to the utility model, the placing plate is driven to lift by rotating the knob, so that the placing plate can be conveniently placed and taken out when the circuit board body is disassembled and assembled, damage caused by the fact that fingers are used for buckling the edge of the circuit board is avoided, the clamping state of the circuit board body by the clamping plate can be controlled through the lifting of the placing plate, the circuit board can be automatically positioned after entering the isolation box, and the disassembly and the assembly are also convenient, the convenience of disassembly and assembly is improved, and the later-period maintenance and overhaul are convenient.

Drawings

FIG. 1 is a schematic diagram of an overall structure of an anti-electromagnetic interference multilayer high-frequency blind-hole circuit board according to the present invention;

FIG. 2 is a schematic diagram of a split structure of a multilayer high-frequency blind-hole circuit board with electromagnetic interference resistance according to the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2;

fig. 4 is a schematic side sectional view of a placement board structure of an anti-electromagnetic interference multilayer high-frequency blind via circuit board according to the present invention.

In the figure: 1. an isolation box; 2. a circuit board body; 3. placing the plate; 4. a retraction spring; 5. A top block; 6. a sliding seat; 7. moving the sleeve; 8. a push block; 9. a threaded rod; 10. a positioning assembly; 101. a splint; 102. a connecting rod; 103. extruding the block; 104. a fixed block; 105. a telescopic rod; 105-1, a telescopic sleeve; 105-2, a sliding rod; 105-3, a positioning spring; 11. heat dissipation holes; 12. a knob.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, an anti-electromagnetic interference multilayer high-frequency blind hole circuit board comprises an isolation box 1 and a circuit board body 2 arranged inside the isolation box 1, wherein a placing plate 3 is slidably connected between the side walls of the two sides of the isolation box 1, a plurality of uniformly distributed contraction springs 4 are fixed between the bottom end of the placing plate 3 and the bottom end of the isolation box 1, a top block 5 is fixed at the bottom end of the placing plate 3, a sliding seat 6 is fixed on the inner wall of the bottom end of the isolation box 1, a moving sleeve 7 is slidably connected to the inner side wall of the sliding seat 6, a push block 8 matched with the top block 5 is fixed at one end of the moving sleeve 7, a threaded rod 9 is rotatably connected to the side wall of one side of the isolation box 1, a knob 12 is fixed at one end of the threaded rod 9, an internal thread is arranged on the inner side wall of the moving sleeve 7, thread transmission is carried out between the threaded rod 9 and the moving sleeve 7, and positioning assemblies 10 matched with the placing plate 3 are respectively arranged at the two sides of the isolation box 1; support placing board 3 and circuit board body 2 through shrink spring 4, make the circuit board have better stability and anti vibration effect when using, and the bottom is equipped with the headspace, can improve the radiating effect of circuit board when using, through the spacing state of the lift control centre gripping subassembly of placing board 3 to circuit board body 2, make circuit board body 2 comparatively convenient laborsaving when the installation, and fix a position more accurately.

The positioning assembly 10 comprises two clamping plates 101 which are in sliding connection with the inner wall of the isolation box 1, the two clamping plates 101 are symmetrically arranged, two connecting rods 102 are fixed on the side walls of the two clamping plates 101, which are far away from each other, the bottom ends of the connecting rods 102 are fixed with extrusion blocks 103, two fixed blocks 104 are fixed on the side walls of the two sides of the placing plate 3, the fixed blocks 104 are matched with the adjacent extrusion blocks 103, and two symmetrically arranged telescopic rods 105 are fixed between the side wall of one side of each clamping plate 101 and the inner wall of the isolation box 1; through the lift of placing board 3 can control splint 101 to the clamping state of circuit board body 2, make the circuit board can automatic positioning after getting into isolation box 1 inside, and also convenient to detach, improved the convenience of dismouting, the later maintenance of being convenient for overhauls.

The push block 8 is in contact with the ejector block 5, and the contact surface of the push block 8 and the ejector block 5 is a matched inclined surface; the placing plate 3 is driven to lift by rotating the knob 12, so that the circuit board body 2 can be conveniently placed and taken out when being disassembled and assembled, and damage caused by the fact that fingers are used for buckling the edge of the circuit board is avoided.

The fixed block 104 is contacted with the adjacent extrusion block 103, and the contact surfaces of the fixed block 104 and the extrusion block 103 are matched inclined surfaces.

The telescopic rod 105 comprises a telescopic sleeve 105-1 fixed with the inner side wall of the isolation box 1, the inner side wall of the telescopic sleeve 105-1 is connected with a sliding rod 105-2 in a sliding mode, one end of the sliding rod 105-2 is fixed with the clamping plate 101, and a positioning spring 105-3 is fixed between the other end of the sliding rod 105-2 and the inner wall of the telescopic sleeve 105-1; the circuit board body 2 is fixed and limited by the clamping plate 101 and the positioning spring 105-3, so that the circuit board has better stability and anti-vibration effect when in use

The circuit board body 2 is positioned at the top of the placing plate 3, the vertical section of the clamping plate 101 is L-shaped, the inner wall of the clamping plate 101 is tightly contacted with the circuit board body 2, and the bottom end of the placing plate 3 is provided with a plurality of radiating holes 11 which are uniformly distributed; place 3 bottoms of board and be equipped with the headspace, cooperate 11 heat dissipations of louvre to improve the radiating effect of circuit board when using.

The working principle is as follows: when circuit board body 2 needs to be installed to isolation box 1 in, rotate knob 12 and drive screw thread transmission between threaded rod 9 and the removal cover 7, remove cover 7 and be located and remove inside when threaded rod 9 rotates and remove. The pushing block 8 is pushed to extrude the ejecting block 5 when the moving sleeve 7 moves, because the contact surface between the pushing block 8 and the ejecting block 5 is an inclined surface, the ejecting block 5 is extruded to lift the placing plate 3 upwards when the pushing block 8 moves, the placing plate 3 moves upwards and drives the fixed block 104 to ascend, the fixed block 104 extrudes the extruding block 103 when ascending, then the extruding blocks 103 on both sides move outwards, the extruding blocks 103 drive the two clamping plates 101 to move towards both sides when moving, the circuit board body 2 is placed on the placing plate 3 when the placing plate 3 ascends to a certain height, then the knob 12 is rotated reversely to reset the moving sleeve 7, the contraction spring 4 drives the placing plate 3 and the circuit board body 2 to descend to the isolation when the moving sleeve 7 resets, the fixed block 104 is separated from the extruding blocks 103 when the placing plate 3 descends, then the clamping plates 101 are pushed to reset by the elasticity of the positioning springs 105-3, and the clamping plates 101 automatically clamp and position both sides of the circuit board body 2 after resetting, guarantee the stability of circuit board when using, place the louvre 11 that 3 bottoms of board were seted up simultaneously and dispel the heat to the circuit board.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The multilayer high-frequency blind hole circuit board is characterized in that a placing plate (3) is connected between the side walls of the two sides of the isolating box (1) in a sliding mode, a plurality of shrinkage springs (4) which are uniformly distributed are fixed between the bottom end of the placing plate (3) and the bottom end of the isolating box (1), a top block (5) is fixed at the bottom end of the placing plate (3), a sliding seat (6) is fixed on the inner wall of the bottom end of the isolating box (1), a moving sleeve (7) is connected to the inner side wall of the sliding seat (6) in a sliding mode, a push block (8) matched with the top block (5) is fixed at one end of the moving sleeve (7), a threaded rod (9) is connected to the side wall of one side of the isolating box (1) in a rotating mode, a knob (12) is fixed at one end of the threaded rod (9), the inner side wall of the movable sleeve (7) is provided with an internal thread, the threaded rod (9) and the movable sleeve (7) are in threaded transmission, and the two sides of the isolation box (1) are respectively provided with a positioning component (10) matched with the placing plate (3).

2. The multilayer high-frequency blind hole circuit board with the electromagnetic interference resistance as claimed in claim 1, wherein the positioning assembly (10) comprises two clamping plates (101) slidably connected to the inner wall of the isolation box (1), the two clamping plates (101) are symmetrically arranged, two connecting rods (102) are fixed to the side walls of the two clamping plates (101) away from each other, the bottom ends of the connecting rods (102) are fixed with extrusion blocks (103), two fixing blocks (104) are fixed to the side walls of the two sides of the placing plate (3), the fixing blocks (104) are matched with the adjacent extrusion blocks (103), and two symmetrically arranged telescopic rods (105) are fixed between the side wall of one side of the clamping plate (101) and the inner wall of the isolation box (1).

3. The multilayer high-frequency blind hole circuit board capable of resisting electromagnetic interference according to claim 2, wherein the push block (8) is in contact with the top block (5), and the contact surfaces of the push block (8) and the top block (5) are matched inclined surfaces.

4. The multilayer high-frequency blind hole circuit board with the electromagnetic interference resistance function as claimed in claim 2, wherein the fixed block (104) is in contact with the adjacent extrusion block (103), and the contact surfaces of the fixed block (104) and the extrusion block (103) are matched inclined surfaces.

5. The multilayer high-frequency blind hole circuit board with the electromagnetic interference resistance as claimed in claim 2, wherein the telescopic rod (105) comprises a telescopic sleeve (105-1) fixed with the inner side wall of the isolation box (1), a sliding rod (105-2) is slidably connected with the inner side wall of the telescopic sleeve (105-1), one end of the sliding rod (105-2) is fixed with the clamping plate (101), and a positioning spring (105-3) is fixed between the other end of the sliding rod (105-2) and the inner wall of the telescopic sleeve (105-1).

6. The multilayer high-frequency blind hole circuit board with electromagnetic interference resistance as claimed in claim 2, wherein the circuit board body (2) is located at the top of the placing board (3), the vertical section of the clamping board (101) is in an L shape, the inner wall of the clamping board (101) is in close contact with the circuit board body (2), and a plurality of heat dissipation holes (11) are uniformly distributed at the bottom end of the placing board (3).