Multi-claw wear-resistant oil-resistant liquid level sensor
A liquid level sensor and oil-resistant technology, which is applied in the field of sensors, can solve the problems such as the decrease of display accuracy, and achieve the effects of small precious metal shape, stable electrical performance output, and low cost
Active Publication Date: 2014-08-20
JIANGSU AOLIWEI SENSING TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a multi-claw type wear-resistant and oil-resistant liquid level sensor, which solves the problem that the brush of the liquid level sensor in the prior art is rubbed and causes the display accuracy to decrease
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[0013] Such as Figure 1-5 As shown, the multi-jaw wear-resistant and oil-resistant liquid level sensor according to the embodiment of the present invention includes a skeleton 1 and a brush holder 2 connected to the skeleton 1, and the skeleton 1 and the brush holder 2 are connected by a pin 3 , One end of the brush holder 2 is the pontoon connection end 4, and the other end is the electrical connection end 5. The electrical connection end 5 of the brush holder 2 is equipped with a multi-claw brush 6. The multi-claw brush 6 is connected to the frame 1 The resistive strip 7 on the upper surface is in contact with each other, and two sets of arc-shaped strip contact belts 8 are arranged on the resistive strip 7 corresponding to the swing area of the multi-jaw brush 6. The pin teeth 9 are all in contact with the resistor 10 at the back. The multi-claw brushes 6 are arranged in two groups, respectively corresponding to two sets of strip-shaped contact belts 8. The multi-claw bru...
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The invention relates to a multi-claw wear-resistant oil-resistant liquid level sensor which comprises a skeleton and an electric brush holder which is in adapter connection on the skeleton. The skeleton is connected with the electric brush holder through a pin. Multi-claw electric brushes are arranged at the electrical connecting end of the electric brush holder. The multi-claw electric brushes are in contact with a resistance chip arranged on the skeleton. Corresponding to swing regions of the multi-claw electric brushes, two groups of strip contact zones are arranged on the resistance chip, wherein each group of strip contact zone is formed in a mode that a plurality of pin teeth are uniformly arranged in an arc shape; and each pin tooth is in contact with a resistance at the rear part of the pin tooth. Two groups of multi-claw electric brushes are arranged and are respectively and correspondingly in contact with the strip contact zones. According to the invention, the electric brushes are of a strip shape. The part in the multi-claw wear-resistant oil-resistant liquid level sensor, which is in contact with the resistance chip, is provided with two groups of multi-claw precious metal wear-resistant layers. Compared with a conventional riveting point, the multi-claw wear-resistant oil-resistant liquid level sensor has the advantages that the multi-claw wear-resistant oil-resistant liquid level sensor is more beneficial to wear and electrical contact, so that the electrical output of the sensor is more stable; and the shape of the composite precious metal is smaller and the cost of the composite precious metal is lower, so that the multi-claw wear-resistant oil-resistant liquid level sensor is beneficial to saving mass production and is beneficial for reducing the cost of the product.
Description
Technical field [0001] The invention relates to a sensor, specifically a liquid level sensor applied in a vehicle fuel tank. Background technique [0002] The problem of the liquid level sensor used in the vehicle fuel tank in the prior art is poor wear resistance. After a period of use, the contact force between the brush and the resistor plate will decrease, and due to the friction between each other, Make the contact end of the brush and the resistance piece receive obvious friction, and its contact surface with the resistance piece will increase, which will cause the brush to contact two or even three resistance bars on the resistance piece at the same time, and the display accuracy will be obvious If it drops, it cannot accurately display the remaining fuel in the fuel tank. Summary of the invention [0003] The object of the present invention is to provide a multi-claw type wear-resistant and oil-resistant liquid level sensor, which solves the problem of the decrease of dis...
Claims
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IPC IPC(8): G01F23/24
Inventor 孙海鑫陈艳顾天刚范传东周怡王李松
Owner JIANGSU AOLIWEI SENSING TECH