PCB

Abstract

The invention discloses a PCB. The PCB comprises a circuit board body; a mounting hole is formed in the surface of the circuit board body; a protection layer is arranged on the inner wall of the mounting hole; a sliding groove is formed in the inner wall of the protection layer; a sleeve is arranged on the inner side of the protection layer; a sliding block is arranged on the outer wall of the sleeve; the sliding block is glidingly connected with the sliding groove; a concave top is arranged on the top of the sleeve; cushion plates are arranged on the two sides of the mounting hole respectively; first springs are arranged between the cushion plates and the circuit board body; one ends of the first springs are fixedly connected with the cushion plates while the other ends of the first springs are fixedly connected with the circuit board body; limiting plates are arranged on one sides of the cushion plates; telescopic rods are arranged between the limiting plates and the concave top; andone ends of the telescopic rods are hinged with the limiting plates. By virtue of the technical scheme that the concave top and the sleeve are additionally provided for avoiding direct contact between a screw and the circuit board, the technical problem that the circuit board is damaged and worn out easily by pressing of the screw in installation can be solved.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a PCB circuit board. Background technique [0002] PCB circuit board is called printed circuit board, also known as printed circuit board. It is an important electronic component, a support body for electronic components, and a carrier for electrical connection of electronic components. Because it is made by electronic printing, Therefore, it is called a "printed" circuit board. When the circuit board is installed on the device, it is often fixed by screwing, and the screw is in direct contact with the circuit board, so that the circuit board is easily crushed and worn by the screw, which destroys the function of the circuit board. [0003] Therefore, it is necessary to invent a PCB circuit board to solve the above problems. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a PCB circuit board, by adding a concave top and a sleeve to avo...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a PCB circuit board, by adding a concave top and a sleeve to avoid the direct contact between the screw and the circuit board, so as to solve the problem that the circuit board proposed in the above background technology is easy to be screwed during installation. Technical problems of crushing and wear

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