CN215453609U

CN215453609U - Dustproof multilayer printed circuit board

Info

Publication number: CN215453609U
Application number: CN202121967322.5U
Authority: CN
Inventors: 朱景云; 赵玉文; 刚磊; 姜峰
Original assignee: Xuchang Shengye Printed Circuit Board Co Ltd
Current assignee: Xuchang Shengye Printed Circuit Board Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-07
Anticipated expiration: 2031-08-20

Abstract

The utility model relates to a dustproof multilayer printed circuit board, wherein the lower end of a circuit board body is provided with an insulating bottom plate, two ends of the insulating bottom plate are respectively provided with a support plate, the inner surface of the upper end of each support plate is provided with a clamping groove, two ends of a second dustproof net are respectively provided with a clamping block, and is arranged between the two support plates in a sliding way through the matching of the clamping block and the clamping groove, the first dustproof net is positioned right above the second dustproof net, both ends of the static dust screen are provided with fixed plates which are positioned above the support plate and are connected with the support plate in a limiting way through fastening screws, the static dust screen is positioned between the first dust screen and the second dust screen, the four corners of the first dustproof net and the four corners of the second dustproof net are provided with convex blocks, the first dustproof net, the second dustproof net and the electrostatic dustproof net are in limited connection through the matching of the convex block and the groove; the dustproof device has the advantages of reasonable structure and good dustproof effect.

Description

Dustproof multilayer printed circuit board

Technical Field

The utility model belongs to the technical field of circuit boards, and particularly relates to a dustproof multilayer printed circuit board.

Background

The PCB, known by the chinese name printed circuit board, is also called "printed" circuit board because it is manufactured by electronic printing; the printed circuit board is an important electronic component, is also a support body of an electronic component and a carrier for electrical connection, is widely applied to various fields, and can be divided into a single-sided board, a double-sided board and a multilayer board according to the number of layers of a circuit; the existing printed circuit board has no dustproof function when in use, and dust accumulation is easy to occur on the surface of the printed circuit board after long-time use, so that the normal work and the service life of the printed circuit board are influenced; therefore, in order to solve the above problems, it is necessary to develop a dustproof multilayer printed circuit board with a reasonable structure and a good dustproof effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the dustproof multilayer printed circuit board with reasonable structure and good dustproof effect.

The purpose of the utility model is realized as follows: a dustproof multilayer printed circuit board comprises a circuit board body and a dustproof device, wherein an insulating bottom plate is fixedly arranged at the lower end of the circuit board body, supporting plates are vertically and fixedly arranged at two ends of the insulating bottom plate, clamping grooves are formed in the inner surface of the upper ends of the supporting plates along the height direction of the supporting plates, the dustproof device is positioned right above the circuit board body and comprises a first dustproof net, a second dustproof net and an electrostatic dustproof net, clamping blocks matched with the clamping groove structures are fixedly arranged at two ends of the second dustproof net, the first dustproof net is arranged between the two supporting plates in a sliding mode through the matching of the clamping blocks and the clamping grooves, fixing plates are arranged at two ends of the first dustproof net, the fixing plates are positioned above the supporting plates and are in limit connection with the upper ends of the supporting plates through fastening screws, and the electrostatic dustproof net is positioned between the first dustproof net and the second dustproof net, and the four corners department of static dust screen all fixedly is provided with the connecting block, the intermediate position of connecting block upper surface and the intermediate position of lower surface all are provided with the recess, the four corners department of first dust screen lower surface and the equal vertical fixation of four corners department of second dust screen upper surface is provided with the lug with groove structure matched with, and spacing between first dust screen and the static dust screen and second dust screen and static dust screen all realize spacing between them through the cooperation of lug and recess.

The two end faces of the second dust screen are fixedly provided with rubber sealing blocks, one side of each rubber sealing block is fixedly connected with the second dust screen, and the other side of each rubber sealing block is arc-shaped.

And an elastic rubber block is fixedly arranged on the bottom surface of the clamping groove.

The first dust screen is integrally arc-shaped, and the height of the first dust screen is gradually reduced from the center to the periphery.

The utility model has the beneficial effects that: the utility model is provided with support plates, clamping grooves, a first dust screen, a second dust screen, electrostatic dust screens, clamping blocks, fixing plates, fastening screws, connecting blocks, grooves and lugs, when the dust screen is installed before use, the second dust screen is arranged between the two support plates in a sliding way through the matching connection between the clamping blocks and the clamping grooves, then the lugs at the four corners of the upper surface of the second dust screen are matched and connected with the grooves at the lower surface of the connecting blocks, the electrostatic dust screens are arranged above the second dust screen, finally, the lugs at the four corners of the lower surface of the first dust screen are matched and connected with the grooves at the upper surface of the connecting blocks, the first dust screen is arranged above the electrostatic dust screens, after the operation is finished, the fastening screws are rotated, the fastening screws can be displaced downwards at the same time of rotation through threaded connection, thereby the extrusion force effect on the fixing plates when the fastening screws move downwards is utilized, the structure is adopted, the first dust screen and the second dust screen can be utilized to play a certain role in blocking dust, so that the problem of accumulation of dust on the upper surface of the circuit board body is avoided, and the electrostatic dust screen can play a certain role in adsorbing dust; meanwhile, the first dust screen, the second dust screen, the electrostatic dust screen and the support plate are detachably connected, so that the convenience of subsequent cleaning operation can be improved; in summary, the utility model has the advantages of reasonable structure and good dustproof effect.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a cross-sectional view of a front view of the present invention.

Fig. 3 is a cross-sectional view of a front view of a bump-and-recess joint of the present invention.

In the figure: 1. the circuit board comprises a circuit board body 2, a dustproof device 21, a first dustproof net 22, a second dustproof net 23, an electrostatic dustproof net 24, a clamping block 25, a fixing plate 26, a fastening screw 27, a connecting block 271, a groove 28, a convex block 29, a rubber sealing block 3, an insulating bottom plate 4, a supporting plate 41, a clamping groove 42 and an elastic rubber block.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Example (b): as shown in fig. 1, 2 and 3, a dustproof multilayer printed circuit board comprises a circuit board body 1 and a dustproof device 2, wherein an insulating bottom plate 3 is fixedly arranged at the lower end of the circuit board body 1, support plates 4 are vertically and fixedly arranged at both ends of the insulating bottom plate 3, a clamping groove 41 is arranged on the inner surface of the upper end of each support plate 4 along the height direction of the support plate, the dustproof device 2 is positioned right above the circuit board body 1 and comprises a first dustproof net 21, a second dustproof net 22 and an electrostatic dustproof net 23, clamping blocks 24 which are structurally matched with the clamping grooves 41 are fixedly arranged at both ends of the second dustproof net 22 and are slidably arranged between the two support plates 4 through the matching of the clamping blocks 24 and the clamping grooves 41, the first dustproof net 21 is positioned right above the second dustproof net 22, fixing plates 25 are arranged at both ends of the first dustproof net 21, the fixing plates 25 are positioned above the support plates 4 and are in limit connection with the upper ends of the support plates 4 through fastening screws 26, the static dust screen 23 is located between first dust screen 21 and second dust screen 22, and the four corners department of static dust screen 23 all fixes and is provided with connecting block 27, the intermediate position of connecting block 27 upper surface and the intermediate position of lower surface all are provided with recess 271, the four corners department of first dust screen 21 lower surface and the equal vertical fixation of four corners department of second dust screen 22 upper surface is provided with recess 271 structure matched with lug 28, between first dust screen 21 and the static dust screen 23 and second dust screen 22 and static dust screen 23 all through lug 28 and recess 271's cooperation, realizes spacing connection between it.

Rubber sealing blocks 29 are fixedly arranged on two end faces of the second dustproof net 22, one side of each rubber sealing block 29 is fixedly connected with the second dustproof net 22, the other side of each rubber sealing block is arc-shaped, and the rubber sealing blocks 29 are arranged, so that when the dustproof net is installed, the second dustproof net 22 can be in close contact with the inner side face of the support plate 4, and the dustproof effect of the whole dustproof net is improved when the dustproof net is used; an elastic rubber block 42 is fixedly arranged on the bottom surface of the clamping groove 41; first dust screen 21 wholly is the arc, by the center to its height reduce gradually all around, utilizes the arc structure, can avoid the dust to appear accumulational problem in first dust screen 21's upper surface.

Before the utility model is used, when the installation is needed, the specific installation operation is as follows: firstly, the second dust screen 22 is slidably placed between the two support plates 4 through the matching connection between the fixture block 24 and the fixture groove 41, then the electrostatic dust screen 23 is placed above the second dust screen 22 through the matching connection between the bumps 28 at the four corners of the upper surface of the second dust screen 22 and the grooves 271 at the lower surface of the connecting block 27, finally, the first dust screen 21 is placed above the electrostatic dust screen 23 through the matching connection between the bumps 28 at the four corners of the lower surface of the first dust screen 21 and the grooves 271 at the upper surface of the connecting block 27, after the above operations are completed, the fastening screw 26 is rotated, the fastening screw 26 can be displaced downwards while rotating through the threaded connection, so that the limit connection between the fixing plate 25 and the support plates 4 is realized through the extrusion force effect on the fixing plate 25 when the fastening screw 26 moves downwards, and meanwhile, when the fixing plate 25 moves downwards under the action of the fastening screw 26, the second dust screen 22 and the electrostatic dust screen 23 can be driven to move downwards, so that the fixture block 24 is in close contact with the bottom surface of the slot 41, and meanwhile, the first dust screen 21, the second dust screen 22 and the electrostatic dust screen 23 are in limited connection by matching the bump 28 with the groove 271, and the installation of the printed circuit board is completed; meanwhile, the first dust screen 21, the second dust screen 22, the electrostatic dust screen 23 and the support plate 4 are detachably connected, so that the convenience of subsequent cleaning operation can be improved; in summary, the utility model has the advantages of reasonable structure and good dustproof effect.

Claims

1. The utility model provides a dustproof multilayer printed circuit board, includes circuit board body and dust keeper, its characterized in that: the lower end of the circuit board body is fixedly provided with an insulating bottom plate, both ends of the insulating bottom plate are vertically and fixedly provided with support plates, the inner surface of the upper end of each support plate is provided with a clamping groove along the height direction, the dustproof device is positioned right above the circuit board body and comprises a first dustproof net, a second dustproof net and an electrostatic dustproof net, both ends of the second dustproof net are fixedly provided with clamping blocks matched with the clamping groove structures and are arranged between the two support plates in a sliding manner through the matching of the clamping blocks and the clamping grooves, the first dustproof net is positioned right above the second dustproof net, both ends of the first dustproof net are provided with fixing plates, the fixing plates are positioned above the support plates and are in limit connection with the upper ends of the support plates through fastening screws, the electrostatic dustproof net is positioned between the first dustproof net and the second dustproof net, four corners of the electrostatic dustproof net are fixedly provided with connecting blocks, and the middle positions of the upper surface and the lower surface of the connecting blocks are provided with grooves, the four corners department of first dust screen lower surface and the equal vertical fixation of four corners department of second dust screen upper surface is provided with the lug with groove structure matched with, and spacing connection between first dust screen and the static dust screen and second dust screen and static dust screen are all through the cooperation of lug with the recess, realize between them.

2. The dustproof multilayer printed circuit board of claim 1, wherein: the two end faces of the second dust screen are fixedly provided with rubber sealing blocks, one side of each rubber sealing block is fixedly connected with the second dust screen, and the other side of each rubber sealing block is arc-shaped.

3. The dustproof multilayer printed circuit board of claim 1, wherein: and an elastic rubber block is fixedly arranged on the bottom surface of the clamping groove.

4. The dustproof multilayer printed circuit board of claim 1, wherein: the first dust screen is integrally arc-shaped, and the height of the first dust screen is gradually reduced from the center to the periphery.