Oil pump structure with sensor

Abstract

The utility model relates to the technical field of vehicle-mounted oil pumps, in particular to an oil pump structure with a sensor. An oil pump structure with a sensor comprises an oil pump, the oil pump comprises an external oil pump shell and an internal electronic element, a circuit board is arranged at the rear end in the oil pump, a pump head is arranged at the front end of the oil pump, a motor shaft is arranged in the middle in the oil pump and is of a hollow structure, a wiring through hole is formed in the rear end of the motor shaft, and the sensor is fixedly arranged at the front end of the motor shaft. The sensor is provided with a wire harness, and the wire harness passes through the wiring through hole from the motor shaft and is connected with the circuit board. According to the oil pump structure with the sensor, information such as the oil temperature and the liquid level in an oil pump can be monitored more quickly and more accurately under the condition that the product size is not increased, and machining, manufacturing and installing are convenient. The technical problems that in the prior art, an oil pump in an existing vehicle-mounted engine cannot accurately monitor information such as the temperature and the liquid level, installation is inconvenient, monitoring is not accurate enough, and actual requirements cannot be met are solved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle-mounted oil pumps, and in particular to an oil pump structure with a built-in sensor. Background Art

[0002] With the development of economy, the automobile industry has developed rapidly. As the performance of automobiles is developing towards safer, more reliable, more stable, environmentally friendly and energy-saving directions, in order to ensure the stable operation of automobile powertrains, it is necessary to equip complete actuators. Therefore, various actuators with motors are widely used in automobile powertrains, including hydraulic actuators, gear selector actuators, brake assist, etc.

[0003] In order to ensure the cooling and lubrication of various engine components, an electronic oil pump is needed to provide power for the oil circulation. The electronic oil pump is powered by an internal motor to drive the impeller to drive the oil circulation to cool and lubricate related components. In order to ensure its lubrication and cooling effects, and accurately monitor temperature, liquid level and other information, the current on-board oil pump is usually unable to accurately and quickly monitor the results when monitoring temperature and liquid level due to the installation position, so it is necessary to improve it. Summary of the invention

[0004] The present invention provides an oil pump structure with a built-in sensor, which can monitor the oil temperature, liquid level and other information in the oil pump more quickly and accurately without increasing the volume of the product, and is easy to process, manufacture and install; it solves the technical problems existing in the prior art that the oil pump in the current vehicle engine cannot accurately monitor the temperature, liquid level and other information, is not easy to install, and the monitoring is not accurate enough to meet actual needs.

[0005] The above technical problems of the present invention are solved by the following technical solutions: an oil pump structure with a built-in sensor, including an oil pump, the oil pump including an external oil pump housing and internal electronic components, a circuit board is provided at the rear end of the oil pump, and a pump head is provided at the front end of the oil pump, characterized in that: a motor shaft is provided in the middle of the oil pump, the motor shaft is a hollow structure, a wiring through hole is provided at the rear end of the motor shaft, a sensor is fixedly provided at the front end of the motor shaft, a wiring harness is provided on the sensor, and the wiring harness passes through the wiring through hole in the motor shaft to connect with the circuit board. The utility model changes the original solid motor shaft in the oil pump into a hollow structure, and the sensor can be installed with one or more of a liquid level sensor, a temperature sensor, and a pressure sensor according to needs, and collects and monitors the information of the oil pump according to needs, and the wiring harness is led out by the sensor, passes through the cavity in the motor shaft, and passes through the wiring through hole to connect with the circuit board.

[0006] Preferably, the sensor is one or more of a liquid level sensor, a temperature sensor, and a pressure sensor. During actual installation, different sensors can be selected and installed according to needs. A liquid level sensor and a temperature sensor can be installed to effectively monitor the temperature and liquid level of the bottom shell of the oil pump, and a pressure sensor can also be installed according to needs to detect the pressure environment of the oil pump.

[0007] Preferably, the sensor is installed at the bottom of the motor shaft, and the sensor extends through the center of the pump head. The sensor is installed at the front end of the motor shaft and extends into the pump head, which can effectively collect the temperature and liquid level of the oil pump housing to ensure the accuracy of the data.

[0008] Preferably, the front end of the motor shaft is provided with a stepped groove for installing the sensor. The stepped groove at the front end of the motor shaft is used for installing and positioning the sensor, which facilitates the rapid installation of the sensor and ensures the stable operation of the sensor.

[0009] Preferably, a housing wiring hole is provided inside the oil pump housing. A housing wiring hole is provided at the center of the internal oil pump housing and is aligned with the wiring through hole, so as to facilitate connection of the wiring harness to the circuit board.

[0010] Therefore, the oil pump structure with a built-in sensor of the present invention has the following advantages: it can monitor the oil temperature and liquid level and other information in the oil pump more quickly and accurately without increasing the product volume, is easy to process and manufacture, easy to install, and can introduce oil into the motor to cool the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a three-dimensional structural schematic diagram of an oil pump structure with a sensor.

[0012] Figure 2 yes Figure 1 Schematic diagram of the main cross-sectional structure.

[0013] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0014] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0015] In the figure, there are oil pump housing 1, circuit board 2, pump head 3, motor shaft 4, wiring through hole 5, stepped groove 6, sensor 7, mounting through hole 8, housing wiring hole 9, and wiring harness 10. DETAILED DESCRIPTION

[0016] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0017] Example:

[0018] like Figure 1 and 2 As shown in 3 and 4, an oil pump structure with a built-in sensor includes an oil pump, which includes an external oil pump housing 1 and internal electronic components, a circuit board 2 is installed at the rear end of the oil pump, a pump head 3 is installed at the front end of the oil pump, a motor shaft 4 is installed at the center of the oil pump, the motor shaft 4 is a hollow shaft, a wiring through hole 5 is opened at the rear end of the motor shaft 4, a stepped groove 6 is opened at the front end of the motor shaft 4, and a sensor 7 is installed at the front end of the motor shaft 4, and the sensor 7 is a liquid level sensor 7 and a temperature sensor 7.

[0019] A mounting through hole 8 for mounting a sensor 7 is provided at the center of the oil pump head 3 . The sensor 7 is mounted in the stepped groove 6 at the bottom of the motor shaft 4 , and the sensor 7 extends into the mounting through hole 8 at the center of the pump head 3 .

[0020] A housing wiring hole 9 is provided in the top housing of the oil pump housing 1 , and a wiring harness 10 is fixedly mounted on the sensor 7 . The wiring harness 10 passes through the cavity in the motor shaft 4 , and passes through the wiring through hole 5 and the housing wiring hole 9 to be connected to the circuit board 2 .

[0021] The utility model changes the original solid motor shaft 4 in the oil pump into a hollow structure, and the temperature sensor 7 and the sensor 7 are installed at the front end of the motor shaft 4 and extend to the front end of the pump head 3, which can effectively collect the temperature and liquid level of the bottom shell. At the same time, the hollow motor shaft 4 can also introduce oil into the inside of the oil pump motor to cool the inside of the oil pump motor, which makes the detection of temperature and liquid level faster and more accurate, and at the same time does not increase the size of the product and does not affect any assembly.

Claims

1. An oil pump structure with a built-in sensor, comprising an oil pump, the oil pump comprising an external oil pump housing and internal electronic components, a circuit board is provided at the rear end of the oil pump, and a pump head is provided at the front end of the oil pump, characterized in that: A motor shaft is provided in the middle of the oil pump. The motor shaft is a hollow structure. A wiring through hole is provided at the rear end of the motor shaft. A sensor is fixed at the front end of the motor shaft. A wiring harness is provided on the sensor. The wiring harness passes through the wiring through hole in the motor shaft and is connected to the circuit board.

2. The oil pump structure with a built-in sensor according to claim 1, characterized in that: The sensor is one or more of a liquid level sensor, a temperature sensor, and a pressure sensor.

3. The oil pump structure with a built-in sensor according to claim 2, characterized in that: The sensor is installed at the bottom of the motor shaft, and the sensor extends through to the center of the pump head.

4. The oil pump structure with a built-in sensor according to claim 1, characterized in that: The front end of the motor shaft is provided with a stepped groove for installing a sensor.

5. The oil pump structure with a built-in sensor according to claim 1, characterized in that: A housing wiring hole is provided inside the oil pump housing.

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