CN218976913U

CN218976913U - Circuit board with electromagnetic interference prevention structure

Info

Publication number: CN218976913U
Application number: CN202222873927.9U
Authority: CN
Inventors: 顾成华
Original assignee: Suzhou Aohai Electronics Co ltd
Current assignee: Suzhou Aohai Electronics Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-05-05
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a circuit board with an electromagnetic interference preventing structure, which comprises a bearing frame, wherein a groove is formed in the top of the bearing frame, a telescopic spring is arranged in the groove, clamping grooves are formed in the top of the bearing frame and distributed on the outer side of the groove, fixing columns are clamped in the clamping grooves, the top of each fixing column is connected with the bottom of an electromagnetic interference resisting metal cover through a clamping seat, the fixing columns are connected through a shielding film, and a heat radiating assembly is connected to the electromagnetic interference resisting metal cover. This take circuit board of electromagnetic interference prevention structure, electromagnetic interference metal cover and shielding film can be followed the top and the side of circuit board body respectively and carried out the shielding to outside battery interference to be convenient for prevent the electronic component on the circuit board body and damage because of outside electromagnetic interference, and then be convenient for prolong its life, be used for electromagnetic interference metal cover and shielding film simultaneously for but split structure, thereby be convenient for the staff split electromagnetic interference metal cover and shielding film overhauls the circuit board body.

Description

Circuit board with electromagnetic interference prevention structure

Technical Field

The utility model relates to the technical field of circuit boards, in particular to a circuit board with an electromagnetic interference preventing structure.

Background

The circuit board makes circuit miniaturization, visual, plays an important role to fixed circuit's batch production and optimization with electrical apparatus overall arrangement, through the mass retrieval, discovers that circuit board among the prior art is typical like public number CN208768345U dustproof circuit board for stereo set, including bottom plate, circuit board body, installation locating hole, fin, antistatic backing, damping spring, shock attenuation board, connecting rod, connecting seat, dust removal case, fixed plate, fixed spring, fixture block, draw-in groove, movable rod, waterproof cover, dust catcher, dust absorption pipe, dust absorption mouth, blanking pipe, installation baffle, waste bin and louvre, the top of bottom plate is installed the circuit board body through the bolt, the fin is installed through the bolt to inside one side of bottom plate, and the antistatic backing plate is installed through the bolt to the bottom of fin, the connecting rod is installed to inside one side of shock attenuation board, and two draw-in grooves have been seted up to the bottom of connecting rod, the connecting rod passes the bottom plate and is connected with dust removal case, this circuit board, and convenient to install and connect effect is fastened, has dustproof security that has improved greatly.

The protection structure of the circuit board can only play a role in dust prevention, but cannot shield and protect the circuit board from electromagnetic interference in the use process, so that the electronic elements on the circuit board are easy to damage, and the existing equipment is required to be improved aiming at the problems.

Disclosure of Invention

The utility model aims to provide a circuit board with an electromagnetic interference preventing structure, which solves the problems that the protective structure provided by the circuit board in the background art only has a dustproof effect and cannot shield and protect the circuit board from electromagnetic interference in the using process, so that the electronic elements on the circuit board are easy to damage.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a circuit board with electromagnetic interference preventing structure comprises a bearing frame,

the top of the bearing frame is provided with a groove, a telescopic spring is arranged in the groove, one end of the telescopic spring, which is far away from the groove, is fixedly connected with the bottom of the circuit board body, the top of the bearing frame is provided with a clamping groove, the clamping groove is distributed on the outer side of the groove, meanwhile, fixing columns are clamped in the clamping grooves, the tops of the fixing columns are connected with the bottom of the anti-electromagnetic interference metal cover through clamping seats, the fixing columns are connected through shielding films, and meanwhile, the anti-electromagnetic interference metal cover is connected with a heat dissipation assembly.

Preferably, the bottom of the bearing frame is provided with a rectangular groove, the rectangular groove is communicated with the ventilation openings on the front side and the rear side of the bearing frame, and the left side and the right side of the bearing frame are fixedly connected with mounting plates.

Preferably, the telescopic springs are distributed at equal intervals at the bottom of the circuit board body, and telescopic guide rods are arranged in the telescopic springs.

Preferably, the bottom of the fixed column and the clamping groove are fixedly connected with magnets, and the magnets are magnetically connected.

Preferably, the top of the fixing column is clamped in the clamping seat, and the clamping seat is fixedly connected to the bottom of the anti-electromagnetic interference metal cover.

Preferably, the heat dissipation assembly comprises heat dissipation fins, the heat dissipation fins are connected to the anti-electromagnetic interference metal cover in a penetrating mode, the bottoms of the heat dissipation fins are fixedly connected with heat conducting plates, and meanwhile the heat dissipation fins are distributed on the anti-electromagnetic interference metal cover at equal intervals.

Compared with the prior art, the utility model has the beneficial effects that: the circuit board with the electromagnetic interference prevention structure,

(1) The utility model can effectively solve the problems that the protective structure arranged on the circuit board can only play a role in dust prevention and can not shield and protect the circuit board from electromagnetic interference in the use process of the circuit board, so that the damage of electronic elements on the circuit board is easy to cause, and the electromagnetic interference metal cover and the shielding film can shield external battery interference from the upper part and the side of the circuit board body respectively, thereby being convenient for preventing the electronic elements on the circuit board body from being damaged due to external electromagnetic interference, further being convenient for prolonging the service life of the electronic elements, and simultaneously being used for the electromagnetic interference metal cover and the shielding film which are in detachable structures, thereby being convenient for workers to detach the electromagnetic interference metal cover and the shielding film to overhaul and maintain the circuit board body;

(2) According to the utility model, the problem of overheat fault of the circuit board body caused by airtight structure of the device can be effectively solved by arranging the telescopic springs, the radiating fins and the heat conducting plates, and the heat conducting plates can transfer heat generated by the circuit board body during operation to the radiating fins by virtue of good heat conducting performance, so that the advantage of large radiating area of the radiating fins can be utilized to rapidly radiate heat, thereby facilitating the prevention of faults caused by overheat of the circuit board body, the telescopic springs can deform and shrink when the circuit board body is vibrated, thereby facilitating the circuit board body to move up and down on the inner side of the anti-electromagnetic interference metal cover, and further facilitating the prevention of faults caused by overheat of the circuit board body by guiding external air flow into the anti-electromagnetic interference metal cover through the ventilation opening and the rectangular groove to help the circuit board body cool.

Drawings

FIG. 1 is a schematic view of a front view in cross section;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic diagram of the front view structure of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

fig. 5 is a schematic diagram of the overall structure of the connection relationship among the heat sink, the heat conducting plate, the card holder and the electromagnetic interference resistant metal cover according to the present utility model.

In the figure: 1. a carrier; 2. a groove; 3. a telescopic spring; 4. a circuit board body; 5. a clamping groove; 6. fixing the column; 7. a magnet; 8. a shielding film; 9. a clamping seat; 10. an electromagnetic interference resistant metal cover; 11. a heat sink; 12. a heat conductive plate; 13. rectangular grooves; 14. a vent; 15. and (3) mounting a plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: a circuit board with an electromagnetic interference prevention structure,

example 1

As shown in fig. 1, 2 and 3, a groove 2 is formed in the top of the bearing frame 1, a telescopic spring 3 is installed in the groove 2, and one end, away from the groove 2, of the telescopic spring 3 is fixedly connected with the bottom of the circuit board body 4.

In a further embodiment, the bottom of the carrier 1 is provided with a rectangular slot 13, and the rectangular slot 13 is communicated with a vent 14 on the front and rear sides of the carrier 1, and the left and right sides of the carrier 1 are fixedly connected with mounting plates 15.

In a further embodiment, the telescopic springs 3 are distributed at equal intervals at the bottom of the circuit board body 4, and telescopic guide rods are arranged inside the telescopic springs 3.

Specifically, the extension spring 3 can play a role of buffering when vibrating externally, thereby being convenient for protecting the circuit board body 4.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the top of the bearing frame 1 is provided with a clamping groove 5, the clamping groove 5 is distributed on the outer side of the groove 2, meanwhile, a fixing column 6 is clamped in the clamping groove 5, the top of the fixing column 6 is connected with the bottom of an anti-electromagnetic interference metal cover 10 through a clamping seat 9, the fixing columns 6 are connected through a shielding film 8, and meanwhile, a heat dissipation component is connected on the anti-electromagnetic interference metal cover 10.

In a further embodiment, the bottom of the fixing post 6 and the clamping groove 5 are fixedly connected with magnets 7, and the magnets 7 are magnetically connected.

Specifically, the quantity of fixed column 6 and draw-in groove 5 is unanimous, and the preferential quantity of fixed column 6 and draw-in groove 5 is four sets of, and magnet 7 is convenient for closely fixed column 6 and bear the weight of the relation of frame 1, is convenient for simplify its connection structure simultaneously to the staff of being convenient for carries out the split with fixed column 6 and bearing frame 1 fast to and fixed column 6 and cassette 9.

In a further embodiment, the top of the fixing post 6 is clamped in the clamping seat 9, and the clamping seat 9 is fixedly connected to the bottom of the anti-electromagnetic interference metal cover 10.

Specifically, in the actual working process, the shielding film 8 and the anti-electromagnetic interference metal cover 10 will shield the external battery interference from the side and the top, so as to prevent the circuit board body 4 from being accidentally damaged due to the external battery interference, and meanwhile, the heat dissipation component can quickly dissipate the heat emitted by the circuit board body 4 during working to the outside.

Example two

This embodiment is a further description of the above embodiment, and it should be understood that this embodiment includes all the foregoing technical features and is further specifically described.

As shown in fig. 1, 3 and 5, in a further embodiment, the heat dissipation assembly includes heat dissipation fins 11, and the heat dissipation fins 11 are connected to the anti-electromagnetic interference metal cover 10 in a penetrating manner, and the bottom of the heat dissipation fins 11 is fixedly connected with a heat conducting plate 12, and meanwhile, the heat dissipation fins 11 are distributed on the anti-electromagnetic interference metal cover 10 at equal intervals.

Preferably, the preferred number of the heat sinks 11 is 4 to 9.

Specifically, the heat conducting plate 12 can transfer the heat emitted by the circuit board body 4 during operation to the heat radiating fins 11, so that the heat can be volatilized by utilizing the plurality of groups of heat radiating fins 11 at the same time, and the circuit board body 4 can be prevented from overheating faults due to low heat radiating efficiency.

The terms "center," "longitudinal," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for descriptive simplicity and convenience only and not as an indication or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated for a particular orientation, based on the orientation or positional relationship illustrated in the drawings, and thus should not be construed as limiting the scope of the present utility model.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a take circuit board of electromagnetic interference prevention structure, includes carrier (1), its characterized in that:

the utility model discloses a circuit board structure, including circuit board body (4), including recess (2) are offered at carriage (1) top, and install extension spring (3) in recess (2), the one end and the bottom fixed connection of circuit board body (4) of recess (2) are kept away from to extension spring (3) simultaneously, draw-in groove (5) are offered at carriage (1) top, and draw-in groove (5) distribute in the outside of recess (2), and draw-in groove (5) inner clamping has fixed column (6) simultaneously, the bottom of clamping seat (9) and anti-electromagnetic interference metal cover (10) are passed through at the top of fixed column (6) is connected, and is connected through shielding film (8) between fixed column (6), is connected with radiator unit on anti-electromagnetic interference metal cover (10) simultaneously.

2. The circuit board with electromagnetic interference preventing structure according to claim 1, wherein: rectangular grooves (13) are formed in the bottom of the bearing frame (1), the rectangular grooves (13) are communicated with ventilation openings (14) in the front side and the rear side of the bearing frame (1), and mounting plates (15) are fixedly connected to the left side and the right side of the bearing frame (1).

3. The circuit board with electromagnetic interference preventing structure according to claim 1, wherein: the telescopic springs (3) are distributed at equal intervals at the bottom of the circuit board body (4), and telescopic guide rods are arranged inside the telescopic springs (3).

4. The circuit board with electromagnetic interference preventing structure according to claim 1, wherein: the bottom of the fixed column (6) and the inside of the clamping groove (5) are fixedly connected with magnets (7), and the magnets (7) are magnetically connected.

5. The circuit board with electromagnetic interference preventing structure according to claim 1, wherein: the top of the fixed column (6) is clamped in the clamping seat (9), and the clamping seat (9) is fixedly connected to the bottom of the electromagnetic interference resistant metal cover (10).

6. The circuit board with electromagnetic interference preventing structure according to claim 1, wherein: the heat dissipation assembly comprises heat dissipation fins (11), the heat dissipation fins (11) are connected to the anti-electromagnetic interference metal cover (10) in a penetrating mode, heat conduction plates (12) are fixedly connected to the bottoms of the heat dissipation fins (11), and meanwhile the heat dissipation fins (11) are distributed on the anti-electromagnetic interference metal cover (10) at equal intervals.