CN212544144U

CN212544144U - Anti-interference circuit board

Info

Publication number: CN212544144U
Application number: CN202021182942.3U
Authority: CN
Inventors: 朱培琴
Original assignee: Wuhan Tuyou Technology Co ltd
Current assignee: Wuhan Tuyou Technology Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-02-12
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to the technical field of circuit boards, in particular to an anti-interference circuit board, which comprises a rear shell, wherein a square groove is arranged on the front surface of the rear shell, a circuit board body is fixedly connected in the square groove, a front shell is arranged on the front surface of the rear shell, a heat dissipation strip is fixedly connected on the front surface of the front shell, grooves are arranged on two sides of the center of the top of the rear shell, mounting plates are fixedly connected on two sides of the rear shell, mounting screws are arranged on the mounting plates, a grounding wire is fixedly connected at the center of the bottom of the rear shell, damping rubber pads are fixedly connected above and below the center of the back surface of the rear shell, and the problems that the electromagnetic wave generated when the electronic device operates easily interferes with the circuit board due to more electronic devices in an automobile at present, so that the performances of the reaction speed, the accuracy, the stability and the like of, causing harm to the running of the automobile.

Description

Anti-interference circuit board

Technical Field

The utility model relates to a circuit board technical field specifically is an anti-interference circuit board.

Background

The circuit board is also called circuit board, PCB board, impedance board, printed circuit board, etc., the circuit board makes the circuit miniaturized, visualized, play an important role in the batch production of the fixed circuit and optimizing the electric apparatus layout, the circuit board is mainly made up of pad, via hole, mounting hole, wire, component, connector, packing, electric boundary, etc., it is divided into three big classifications of single-panel, double-sided board, and multilayer circuit board according to the number of layers, multilayer circuit board and the product that the electronic information technology develops towards high speed, multi-function, large capacity, small volume, thinness, lightweight, along with the development of the automobile industry, the circuit board on the car is used more and more.

At present, because there are many electronic devices in an automobile, electromagnetic waves generated when the electronic devices operate easily interfere with a circuit board, so that the performances of the circuit board, such as response speed, accuracy and stability, are reduced, and the running of the automobile is damaged, and therefore an anti-interference circuit board is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-interference circuit board to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an anti-interference circuit board, includes the back casing, the square groove has been seted up in the front of back casing, fixedly connected with circuit board body in the square groove, the front of back casing is provided with the procapsid, the positive fixedly connected with heat dissipation strip of procapsid, the both sides of back casing top center department all are seted up flutedly, the equal fixedly connected with mounting panel in back casing both sides, be provided with the mounting screw on the mounting panel, the fixedly connected with earth connection of bottom center department of back casing, the top and the equal fixedly connected with shock attenuation rubber pad in below of back casing back center department, fixedly connected with USB data interface in the recess, the top of back casing just is provided with sealed lid in groove position department, the fixedly connected with pull ring of sealed lid top center department, the equal fixedly connected with adhesive tape in both sides of sealed lid.

Preferably, the rear shell, the front shell and the heat dissipation strips are made of copper plates, and the shape of the rear shell is matched with that of the front shell.

Preferably, the surfaces of the rear shell and the front shell are both sprayed with electromagnetic shielding coatings, and the shape of the square groove is matched with that of the circuit board body.

Preferably, the USB data interface is electrically connected with the circuit board body, and the shape of the shock-absorbing rubber pad is matched with that of the rear shell.

Preferably, the rear shell is fixedly connected with the front shell through screws, and the shape of the sealing cover is matched with that of the groove.

Preferably, the mounting screws and the heat dissipation strips are arranged in a plurality, and the sealing cover is connected with the groove in a sliding mode.

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

1. in the utility model, the rear shell, the front shell, the grounding wire and the circuit board body are arranged, the circuit board body is placed in the sealed shell consisting of the front shell and the rear shell, the grounding wire leads the rear shell to be grounded, when the charge distribution in the sealed shell consisting of the front shell and the rear shell or in the outer area of the shell is changed, the charges are redistributed on the outer surface of the shell through the grounding wire so as to ensure that the electromagnetic field of the shell is kept constant, the electromagnetic field inside and outside the shell is separated by metal, the change of the external electromagnetic field can not influence the circuit board body inside, meanwhile, the electromagnetic shielding coating sprayed on the rear shell and the front shell can also isolate the external electromagnetic signal, the electromagnetic signal is prevented from entering the sealed shell consisting of the front shell and the rear shell, the external electromagnetic signal can not easily influence the circuit board body, the problem that the electromagnetic wave generated when the electronic, the reaction speed, the precision, the stability and other performances of the circuit board are reduced, and the damage is caused to the running of the automobile.

2. The utility model discloses in, through setting up procapsid and back casing and the heating panel of being made by the copper, the coefficient of heat conductivity of steel sheet is lower, and the procapsid and back casing and the heating panel of being made by the copper can be timely distribute away the heat that produces the circuit board body, and the heating panel on the procapsid can increase the area of contact with the air simultaneously, improves the radiating efficiency.

3. The utility model discloses in, through setting up rubber cushion, the vibrations that produce when rubber cushion can absorb the car and travel avoid vibrations to cause the influence to the circuit board body.

Drawings

FIG. 1 is a front sectional view of the rear housing of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is a front view of the present invention;

fig. 4 is a top sectional view of the rear housing of the present invention.

In the figure: 1-rear shell, 2-square groove, 3-circuit board body, 4-front shell, 5-heat dissipation strip, 6-groove, 7-mounting plate, 8-mounting screw, 9-grounding wire, 10-shock-absorbing rubber pad, 11-USB data interface, 12-sealing cover, 13-pull ring and 14-adhesive tape.

Detailed Description

The technical solution 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 some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

an anti-interference circuit board comprises a rear shell 1, wherein the rear shell 1, a front shell 4 and heat dissipation strips 5 are all made of copper plates, the shape of the rear shell 1 is matched with that of the front shell 4, the heat conduction performance of the copper plates is good, the rear shell 1, the front shell 3 and the heat dissipation strips 5 made of the copper plates can timely dissipate heat, the heat dissipation effect is good, square grooves 2 are formed in the front face of the rear shell 1, a circuit board body 3 is fixedly connected in the square grooves 2, the front shell 4 is arranged on the front face of the rear shell 1, electromagnetic shielding coatings are sprayed on the surfaces of the rear shell 1 and the front shell 4, the shape of the square grooves 2 is matched with that of the circuit board body 3, the heat dissipation strips 5 are fixedly connected to the front face of the front shell 4, grooves 6 are formed in two sides of the center of the top of the rear shell 1, mounting plates 7 are fixedly connected to two sides, mounting screw 8 and heat dissipation strip 5 all are provided with a plurality ofly, and sealed lid 12 is sliding connection with recess 6's connected mode, the bottom center department fixedly connected with earth connection 9 of back casing 1, the top and the equal fixedly connected with rubber gasket 10 in below of 1 back center department of back casing, fixedly connected with USB data interface 11 in the recess 6, USB data interface 11 is electric connection just with circuit board body 3's connected mode, rubber gasket 10's shape and back casing 1's shape looks adaptation, the top of back casing 1, and be provided with sealed lid 12 in recess 6 position department, back casing 1 passes through screw and procapsid 4 fixed connection, and the shape of sealed lid 12 and the shape looks adaptation of recess 6, sealed lid 12 top center department fixedly connected with pull ring 13, the equal fixedly connected with adhesive tape 14 in both sides of sealed lid 12 bottom center department.

The utility model discloses work flow: when in use, the device is fixed in the automobile through the mounting screw 8, the grounding wire 9 is fixedly connected with the automobile body of the automobile, the pull ring 13 is pulled, the pull ring 13 drives the sealing cover 12 to move outwards, thereby, the sealing cover 12 is pulled out, the data line is inserted into the USB data interface 11, when the automobile runs, electromagnetic waves generated by other electronic devices may cause a change in an electromagnetic field on the sealed case composed of the front case 4 and the rear case 1, when the electromagnetic field distribution on the sealed envelope composed of the front case 4 and the rear case 1 changes, through the ground line 9, the electric charge is redistributed on the rear case 1 and the front case 4, keep invariable with the electromagnetic field of guaranteeing on procapsid 4 and the back casing 1, external electromagnetic field is cut off by procapsid 4 and back casing 1, and the unable circuit board body 3 that is located inside that influences of the change of external electromagnetic field, and the heat that circuit board body 3 produced can distribute away through back casing 1 and procapsid 4 and heat dissipation strip 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An anti-interference circuit board, includes back casing (1), its characterized in that: the front of the rear shell (1) is provided with a square groove (2), a circuit board body (3) is fixedly connected in the square groove (2), the front of the rear shell (1) is provided with a front shell (4), the front of the front shell (4) is fixedly connected with a heat dissipation strip (5), two sides of the center of the top of the rear shell (1) are provided with grooves (6), two sides of the rear shell (1) are fixedly connected with mounting plates (7), the mounting plates (7) are provided with mounting screws (8), the center of the bottom of the rear shell (1) is fixedly connected with a grounding wire (9), the upper part and the lower part of the center of the back of the rear shell (1) are fixedly connected with damping rubber pads (10), the inside of each groove (6) is fixedly connected with a USB data interface (11), the top of the rear shell (1) is provided with a sealing cover (12) at the position of each groove, the sealing structure is characterized in that a pull ring (13) is fixedly connected to the center of the top of the sealing cover (12), and adhesive tapes (14) are fixedly connected to the two sides of the center of the bottom of the sealing cover (12).

2. The anti-jamming circuit board of claim 1, wherein: the rear shell (1), the front shell (4) and the heat dissipation strips (5) are all made of copper plates, and the shape of the rear shell (1) is matched with that of the front shell (4).

3. The anti-jamming circuit board of claim 1, wherein: electromagnetic shielding coating is sprayed on the surfaces of the rear shell (1) and the front shell (4), and the shape of the square groove (2) is matched with that of the circuit board body (3).

4. The anti-jamming circuit board of claim 1, wherein: the USB data interface (11) is electrically connected with the circuit board body (3), and the shock-absorbing rubber pad (10) is matched with the rear shell (1) in shape.

5. The anti-jamming circuit board of claim 1, wherein: the rear shell (1) is fixedly connected with the front shell (4) through screws, and the shape of the sealing cover (12) is matched with that of the groove (6).

6. The anti-jamming circuit board of claim 1, wherein: the mounting screws (8) and the heat dissipation strips (5) are arranged in a plurality of numbers, and the sealing covers (12) are connected with the grooves (6) in a sliding mode.