A structure of high power precision chip resistor

Abstract

The invention discloses a high-power accuracy patch resistance structure. The high-power accuracy patch resistance structure comprises a resistance body, wherein a lower surface of the resistance bodyis fixedly connected with an upper surface of a rubber shell, an upper surface of the rubber shell is fixedly connected with lower surfaces of two fixed blocks, the fixed blocks are arranged at a right side of the resistance body, opposite surfaces of the two fixed blocks are respectively clamped with surfaces, deviating from each other, of two bearings, and opposite surfaces of the two bearingsrespectively sleeve two ends of a rotation shaft. By matching of a protection shell, the bearings, a through hole, a sliding rod, a first limitation plate, a second limitation plate, a first spring, asliding sleeve and a pull ring, a pull ring is pulled by people, the first spring pushes the first limitation plate to move rightwards by elasticity of the first spring, the first limitation plate moves rightwards and drives a sliding rod to move rightwards and extend to the through hole formed in a left side surface of the protection shell, so that the protection shell is fixed on the resistancebody, and dust can be shielded by the protection shell.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a structure of a high-power precision chip resistor. Background technique [0002] Chip fixed resistors, commonly known as chip resistors, are one of the metallic glass uranium resistors. It is a resistor made by mixing metal powder and glass uranium powder and printing on the substrate by screen printing. Moisture and high temperature resistance, small temperature coefficient. It can greatly save the cost of circuit space and make the design more refined. [0003] Among the internal resistance of the machine, the welding of chip resistors is particularly important, and its stability will directly affect the working process of the entire circuit board. For example, a Chinese patent discloses "an improved structure of chip resistors" (Patent No.: CN 206194469U ), the technical problem solved by this patent is that the side surface of the chip resistor is fixedly c...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a high-power precision chip resistor structure, which solves the problem that the chip resistor does not have a good heat dissipation effect, and the chip resistor will emit a large amount of heat when it is working, and even when the heat is serious. It will damage the circuit board and cause inconvenience to people using chip resistors

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