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Motor and braking system

A motor shell and circuit board technology, applied in the direction of brakes, electric components, brake transmission devices, etc., can solve the problems of corrosion, reducing the durability and reliability of sensors, affecting the acquisition accuracy of the rotor shaft of the motor, etc., to prevent Corrosion, excellent assembly process, compact structure

Active Publication Date: 2021-08-10
CHINA AUTOMOTIVE INNOVATION CORP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, in the prior art, the sensor circuit board is usually directly exposed in the motor casing, and as the motor is used for a long time, the brake fluid in the motor will easily form brake fluid oil and gas and accumulate in the motor casing, the sensor If the circuit board is in the oil and gas environment for a long time, it will produce certain corrosion, so as to reduce the durability and reliability of the sensor, and then affect the acquisition accuracy of the rotation angle of the rotor shaft of the motor and the accuracy of automobile braking.

Method used

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention discloses a motor and a braking system. The motor comprises a motor shell, a rotor shaft and a sensor, wherein the rotor shaft and the sensor are arranged in the motor shell, and the sensor comprises a sensor circuit board and a sensor rotor. The motor further comprises a packaging shell, and the packaging shell is fixedly arranged in the motor shell and provided with a closed containing cavity; the sensor circuit board is fixedly arranged in the containing cavity, and the sensor rotor is fixedly connected to the rotor shaft and arranged outside the containing cavity. According to the motor, the sensor circuit board can be isolated from the oil gas environment in the motor, and the durability and reliability of the sensor circuit board are improved.

Description

technical field [0001] The invention relates to the technical field of automobile brake systems, in particular to a motor and a brake system. Background technique [0002] With the continuous development of automobile electrification and intelligence, there are more and more development requirements for integrated wire-controlled electro-hydraulic braking systems. Among them, the realization of the pressure building unit is mostly achieved by the rotation of the motor to drive the ball screw, which in turn drives the hydraulic piston. To build pressure, in order to ensure the accuracy of pressure building, it is necessary to accurately collect the rotation angle of the rotor shaft of the motor. [0003] Existing motors generally include a motor housing, a stator fixed to the motor housing, a rotor shaft rotatably disposed on the motor housing, and a rotor fixed to the rotor shaft. In addition, in order to collect the rotation angle of the rotor shaft of the motor, the motor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/21H02K7/10B60T13/74
CPCH02K11/21H02K7/10B60T13/745
Inventor 李丰军周剑光方伟王勇
Owner CHINA AUTOMOTIVE INNOVATION CORP
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