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Electric pump

a technology of electric pumps and electric motors, applied in the direction of pump components, pump control, rotary piston liquid engine, etc., can solve the problems of increasing the size of electric pumps in some cases, complicating the assembly work of electric pumps, etc., and preventing an increase in size. , the effect of reducing the complication of assembly work

Inactive Publication Date: 2019-09-05
NIDEC TOSOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent provides electric pumps with pressure sensor devices that are easy to assemble and do not increase in size. This reduces the complexity of the assembly process and makes the pumps more efficient and reliable.

Problems solved by technology

This complicates the work of assembling the electric pump in some cases.
In addition, the electric pump needs to be connected with the outside at two places, which leads to an increase in the size of the electric pump in some cases.

Method used

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Embodiment Construction

[0011]An electric pump 10 according to an exemplary embodiment of the present disclosure is an electric oil pump configured to pressurize and transfer oil as fluid. As illustrated in FIGS. 1 and 2, the electric pump 10 includes an electric pump case 11, a shaft 21 configured to rotate about a central axis J extending in an axial direction, a motor unit 20 configured to rotate the shaft 21, a pump unit 30 configured to be driven through the shaft 21 by the motor unit 20, a sensor magnet 140, a bus bar unit 100, a circuit board 110, a rotation sensor 130, and a pressure sensor device 50.

[0012]In the following description, unless otherwise stated, a direction parallel to the axial direction of the central axis J is simply referred to as an “axial direction”, a radial direction with respect to the central axis J is simply referred to as a “radial direction”, and a circumferential direction with respect to the central axis J is simply referred to as a “circumferential direction”. In addi...

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Abstract

An electric pump includes a motor, a pump, an electric pump case, a pressure sensor device to measure a pressure of fluid, and a circuit board. The pump includes a pump gear to rotate along with rotation of a shaft, and a pump body including a pump chamber recessed from a surface and housing the pump gear, and a through-hole with openings at two ends in an axial direction, one of the openings being opened to the pump chamber. The pressure sensor device includes a pressure sensor device body between the pump and the motor, and an electrical connection cable electrically connecting the pressure sensor device body and the circuit board. The electrical connection cable is routed from the pressure sensor device body to the circuit board inside of the electric pump case.

Description

BACKGROUND OF THE INVENTION1. Field of the Invention[0001]The present disclosure relates to an electric pump.2. Description of the Related Art[0002]An electric pump using a motor has been known. For example, a related art electric pump includes a pump unit and a motor unit, which are integrated.[0003]When the pressure of fluid such as oil pressurized by an electric pump as described above is measured by a pressure sensor, the pressure sensor can be disposed in the electric pump. However, this configuration requires a wire for supplying power to the electric pump, and a wire for supplying power to the pressure sensor. This complicates the work of assembling the electric pump in some cases. In addition, the electric pump needs to be connected with the outside at two places, which leads to an increase in the size of the electric pump in some cases.SUMMARY OF THE INVENTION[0004]Example embodiments of the present disclosure provide electric pumps each including a pressure sensor device a...

Claims

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Application Information

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IPC IPC(8): F04C15/00F04C14/28
CPCF04C15/0057F04C14/28F04C2210/206F04C2270/18F04C2240/40F04C2/102F04C15/008F04C2240/811F04C2270/052F04C2240/808F04C15/00
Inventor KOBAYASHI, YOSHIYUKIKATAOKA, SHIGEHIRO
Owner NIDEC TOSOK CORP