A circuit board against electromagnetic interference

By setting an anti-interference mechanism on the circuit board, and using heat-conducting pins for heat dissipation and positioning mechanisms for easy maintenance, the problems of overheating of electronic chips and inconvenience of disassembly caused by electromagnetic shielding are solved, achieving the effects of electromagnetic interference prevention and easy maintenance.

CN224521253UActive Publication Date: 2026-07-17GUIZHOU WEIHAO CIRCUIT TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUIZHOU WEIHAO CIRCUIT TECHNOLOGY CO LTD
Filing Date
2025-08-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The electromagnetic shielding on existing circuit boards forms a sealed environment, which makes electronic chips prone to overheating and damage after being powered on, and also makes them difficult to repair.

Method used

An anti-interference mechanism was designed, including an electromagnetic shielding cover, a heat-conducting needle, and a positioning mechanism. The heat-conducting needle absorbs heat energy and conducts it to the outside for heat dissipation. At the same time, the positioning mechanism facilitates the installation and removal of the electromagnetic shielding cover and makes maintenance easier.

Benefits of technology

It achieves protection against electromagnetic interference, avoids overheating and damage to electronic chips, and facilitates chip inspection and maintenance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to circuit board technical field, and disclose a kind of circuit board of anti-electromagnetic interference, including circuit board and electronic chip, the electronic chip is fixedly installed in the one side of circuit board, and the one side of electronic chip is provided with anti-interference mechanism;The anti-interference mechanism includes the electromagnetic shield of being set to the one side of circuit board, the both sides of the electromagnetic shield are fixedly connected with a plurality of heat conduction needle, and one end of the heat conduction needle is penetrated to the inside of electromagnetic shield;The utility model can be fixed on circuit board by positioning mechanism through setting anti-interference mechanism, so that electromagnetic shield can completely cover electronic chip, realize anti-electromagnetic effect, avoid the interference of outside electromagnetic to electronic chip, when electronic chip is energized, heat energy will gather in the inside of electromagnetic shield, and heat conduction needle will absorb heat energy, and heat energy is conducted to the outside of electromagnetic shield, reach the effect of heat dissipation, avoid electronic chip overheating damage.
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Claims

1. A circuit board for electromagnetic interference protection, comprising a circuit board (1) and an electronic chip (2), wherein the electronic chip (2) is fixedly mounted on one side of the circuit board (1), characterized in that: An anti-interference mechanism is provided on one side of the electronic chip (2); The anti-interference mechanism includes an electromagnetic shield (3) disposed on one side of the circuit board (1). Several heat conduction pins (4) are fixedly connected to both sides of the electromagnetic shield (3). One end of the heat conduction pin (4) penetrates into the interior of the electromagnetic shield (3). A locking block (5) is fixedly connected to the top and bottom of the electromagnetic shield (3). Two housings (6) are fixedly connected to one side of the circuit board (1). A slot (7) for cooperating with the locking block (5) is opened on one side of the housing (6). The positioning mechanism is movably disposed inside the housing (6).

2. The circuit board of claim 1, wherein: The positioning mechanism includes a transmission block (8) disposed inside the housing (6). A movable block (9) is fixedly connected to the side of the transmission block (8) near the electromagnetic shield (3). A positioning rod (10) is fixedly connected to the side of the movable block (9) near the electromagnetic shield (3). One end of the positioning rod (10) extends into the interior of the slot (7). A positioning hole (11) for cooperating with the positioning rod (10) is opened on the side of the card block (5) away from the electromagnetic shield (3). Two transmission grooves (12) are provided on one side of the transmission block (8). A transmission rod (13) is provided inside the transmission groove (12). A push rod (14) is fixedly connected to one end of the transmission rod (13). The two push rods (14) extend to the outside of the housing (6) on opposite sides and are fixedly connected to a push block (15).

3. The circuit board of claim 2, wherein: A spring (16) is fixedly connected to one side of the transmission block (8), and one end of the spring (16) is fixedly connected to the inner wall of the housing (6).

4. The circuit board of claim 2, wherein: Both sides of the movable block (9) are fixedly connected to sliding blocks (17), and the inner wall of the housing (6) is provided with sliding grooves (18) that cooperate with the sliding blocks (17).

5. The circuit board of claim 1, wherein: One end of the heat-conducting needle (4) is fixedly connected to a protective cap (19), which is arc-shaped.

6. The circuit board of claim 1, wherein: The heat-conducting needle (4) and the protective cap (19) are both made of copper.