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Oil level sensing device

A technology of oil level sensing and sensors, which is applied in the direction of buoy liquid level indicators, etc., can solve problems such as poor contact and inaccurate detection data of oil level sensing devices, and achieve cost saving, long-term stable and reliable contact, and reduce volume space Effect

Inactive Publication Date: 2011-10-26
蒋勤舟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But its disadvantage is: the sliding contact piece and resistor body are exposed to gasoline for a long time, and the impurities of gasoline will affect the contact, resulting in poor contact and making the detection data of the oil level sensor device inaccurate

Method used

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] like figure 1 Shown: an oil level sensing device, including a substrate 1, a rotating shaft 3, and a resistor 2 installed on the substrate 1, a sliding contact piece 4 and a float 5 are installed on the rotating shaft 3, and a sensor is also provided The casing 6, the resistor body 2 and the sliding contact piece 4 are all located in the sensor casing 6, and the sensor casing 6 is provided with an oil filtering channel.

[0027] The resistor body 2 can be a thick-film resistor, a thin-film resistor, or a wire-wound resistor.

[0028] A filter 7 is installed on the sensor housing 6 as the oil filtering channel.

[0029] The filter 7 is installed on the upper part and the lower part of the sensor housing 6 respectively.

[0030] One end of the rotating shaft 3 protrudes from the sensor housing 6 and is then connected with the ...

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Abstract

The invention discloses an oil level sensing device comprising a substrate, a rotary shaft and a resistor body arranged on the substrate, wherein, the rotary shaft is provided with a sliding contact sheet and a floater. The invention is characterized in that the oil level sensing device is also provided with a sensor housing; the resistor body and the sliding contact sheet are arranged in the sensor housing; and the sensor housing is provided with an oil filtering path. The invention has the beneficial effects that the invention prevents impurities in petrol from polluting the sliding contactsheet and the floater, ensures long-term stable and reliable contact between the sliding contact sheet and the resistor body and ensures that the oil level sensing device can detect accurate data.

Description

technical field [0001] The invention belongs to a liquid level sensor, in particular to an oil level sensor device for automobile oil level detection. Background technique [0002] The traditional oil level sensing device includes a substrate, a rotating shaft, and a resistor installed on the substrate. A sliding contact piece and a float are installed and connected to the rotating shaft. The float, the rotating shaft and the sliding contact piece are fixed as one, and the float As the oil level rises and falls, the sliding contact piece is driven to rotate around the rotating shaft, the sliding contact piece slides on the resistor body, and the resistance value between the sliding contact piece and the resistor body changes, which can reflect the level of the oil level. [0003] But its disadvantages are: the sliding contact piece and resistor body are exposed to gasoline for a long time, and the impurities of gasoline will affect the contact, resulting in poor contact and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/36
Inventor 蒋勤舟
Owner 蒋勤舟