Liquid level sensor lever supporting structure

Abstract

The invention discloses a liquid level sensor lever supporting structure which comprises a lever support and a framework. A fan-shaped resistance sheet is arranged on the framework. The lever support is installed on the framework through a rotary shaft. An inclined sliding piece is installed on the lever support. Two cylindrical contacts are arranged on the lower portion of the front end of the sliding piece. A surface of each cylindrical contact is provided with one layer of precious metal wearing layer with the thickness of at least 0.1mm. Each precious metal wearing layer and each cylindrical contact are combined as a whole. The cylindrical contacts, the sliding piece and the resistance sheet form a double contact circuit and are connected in a die-casting mode. The contacts are cylindrical contacts. The parts contacting the resistance sheet are two cylindrical precious metal wearing layers. According to the processes of materials of the contacts, a contact shape, contact force and the like and compared with a prior riveting circular contact, the liquid level sensor lever supporting structure is beneficial for wearing resistance and contact of electrical property so that abrasion of the contact is reduced and electrical property output of a sensor is steady.

Description

technical field [0001] The invention relates to a lever support structure of a liquid level sensor, which is a core component of the liquid level sensor and belongs to the field of liquid level sensors. Background technique [0002] At present, the liquid level sensor adopts a precious metal contact structure, and the production cost is high. Simultaneously, due to the contact friction between the contact and the resistor, the stability and wear resistance of the contact between the contact and the resistor directly determine the service life of the whole sensor, and the service life of the sensor in the prior art still has a considerable Big room for improvement. Contents of the invention [0003] The purpose of the present invention is to provide a liquid level sensor lever support structure with long service life, good stability and low cost. [0004] The purpose of the present invention is to realize through the following technical solutions: [0005] A liquid level...

AI Technical Summary

Problems solved by technology

[0002] At present, the liquid level sensor adopts the precious metal contact structure, and the production cost is high

Simultaneously, due to the contact friction between the contact and the resistor, the stability and wear resistance of the contact between the contact and the resistor directly determine the service life of the whole sensor, and the service life of the sensor in the prior art still has a considerable big room for improvement

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