Liquid level sensor lever supporting structure

A technology of liquid level sensor and support structure, which is applied in the field of liquid level sensor and can solve the problems of high production cost

Inactive Publication Date: 2013-05-22
JIANGSU AOLIWEI SENSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 w...

Method used

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  • Liquid level sensor lever supporting structure
  • Liquid level sensor lever supporting structure

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Experimental program
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Embodiment Construction

[0014] Such as Figure 1-2 As shown, a liquid level sensor lever support structure according to the embodiment of the present invention includes a lever support 2 and a skeleton 1, and a fan-shaped resistance sheet 11 is arranged on the skeleton 1, and the lever support 2 is installed on the skeleton 1 through a rotating shaft. Above, an inclined sliding piece 21 is installed on the lever support 2, and two columnar contacts 22 are arranged at the lower part of the front end of the sliding piece 21. The grinding layer is integrally formed between the noble metal wear-resistant layer and the columnar contact 22, and the columnar contact 22 is connected to the sliding piece 21 by die-casting.

[0015] The two cylindrical contacts 22 form a double-contact circuit with the sliding sheet 21 and the resistor sheet 11 .

[0016] The noble metal wear-resistant layer has an arc-shaped surface.

[0017] The noble metal wear-resistant layer adopts silver-palladium alloy.

[0018] The ...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): G01F23/00G01F23/24
Inventor 童叶青高计超
Owner JIANGSU AOLIWEI SENSING TECH
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