Novel water level sensor on expansion water tank used for automobile

Abstract

The invention relates to the technical field of water level sensors, in particular to a novel water level sensor on an expansion water tank used for an automobile. The novel water level sensor comprises a sensor body, wherein the sensor body is L-shaped; clamping claws are arranged on the two sides of the end parts of the transverse part of the sensor body; a patch plug is arranged at the end partof the vertical part of the sensor body; wire harnesses are arranged in the vertical part of the sensor body; the wire harnesses are connected between the vertical part of the sensor body and the patch plug; the clamping claws and a clamping slot of the expansion water tank are connected, assembled and fixed externally in a clamping manner; the expansion water tank comprises an upper tank body and a lower tank body; a pressure relief opening is formed in one side of the upper tank body; a liquid feeding hole is formed in the front end of one side of the pressure relief opening; a water supplementing hole is formed in the upper tank body on the opposite side of the pressure relief opening; a degassing opening is formed in one side of the water supplementing hole; and the clamping slot is formed in one side of the degassing opening. According to the technical scheme, the novel water level sensor has the following benefits: the clamping slot meets the external clamping connection type structure of the sensor and is not in contact with antifreezing solution to prevent the antifreezing solution from leakage; and the patch plug facilitates switching of different patch plugs.

Description

technical field [0001] The invention relates to the technical field of water level sensors, in particular to a novel water level sensor on an expansion water tank for automobiles. Background technique [0002] The traditional water level sensor on the existing expansion tank is a contact type, which penetrates into the antifreeze liquid and adopts a threaded sealing structure, which is easy to cause the water tank to leak overnight, and the after-sales PPM is high. The existing water level sensor is an aluminum part with high cost, large volume, built-in structure, and contact with antifreeze. Most water level sensors are disposable, inconvenient to disassemble, and the plug is integrated with the main rod. If the plug type is changed, the mold needs to be redeveloped, which is costly and takes a long time. [0003] The traditional back-type expansion tank is generally formed by blow molding. The degassing port is arranged at a high position above the water tank, and the ex...

AI Technical Summary

Problems solved by technology

[0002] The traditional water level sensor on the existing expansion tank is a contact type, which extends into the antifreeze liquid and adopts a threaded sealing structure, which may easily cause the water tank to leak at night, and the after-sales PPM is high.

The existing water level sensor is an aluminum part, with high cost, large volume, built-in structure, and contact with antifreeze

Most water level sensors are disposable, inconvenient to disassemble, and the plug is integrated with the main rod. If the plug type is changed, the mold needs to be redeveloped, which is costly and takes a long time

[0003] The traditional back-type expansion tank is generally formed by blow molding. The degassing port is arranged at a high position above the water tank, and the external rubber tube affects the appearance; the position of the liquid filling cover is limited and cannot be installed on the front surface, which brings the problem of insufficient space for high-level threads.

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