Motor and housing assembly for motor

Abstract

The invention discloses a motor and a casing assembly for the motor. The motor includes: a casing; a stator, the stator is arranged in the casing; a first end cover and a second end cover, the first end The cover and the second end cover are installed on the housing and are respectively located on both sides of the stator; the conducting member is arranged on the outer surface of the housing, and the first conducting member of the conducting member One end is connected with the first end cover and the second end of the conducting member is connected with a fastener connecting the housing and the second end cover. The motor according to the embodiment of the present invention can reduce the equivalent capacitance, thereby reducing the voltage difference to prevent abnormal noise and electric corrosion, and the conduction is reliable.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular to a motor and a housing assembly for the motor. Background technique [0002] The DC motor is driven by an inverter modulation (PWM) inverter. Due to the high-frequency change of current, there is a voltage difference between the inner and outer rings of the bearing. When the voltage difference reaches the breakdown voltage of the bearing oil film, a small current flows from the bearing raceway and the bearing ball. If it passes through the middle, it will cause damage to the bearing ball and the bearing groove, and finally produce abnormal sound and electric corrosion. [0003] In the related art, metal pins are used to connect the stator core and the end cover, but because the end of the metal pin connected to the stator core cannot effectively pierce the residual thermosetting material exposed on the stator, and the end connected to the end cover is likely to cause creep,...

AI Technical Summary

Problems solved by technology

[0002] The DC motor is driven by an inverter modulation (PWM) inverter. Due to the high-frequency variation of the current, there is a voltage difference between the inner and outer rings of the bearing. When the voltage difference reaches the breakdown voltage of the bearing oil film, a small current flows from the bearing raceway and the bearing ball. In the middle, it will cause damage to the bearing ball and the bearing groove, and finally produce abnormal sound and electric corrosion.

[0003] In the related technology, metal pins are used to connect the stator core and the end cover. However, the end of the metal pin connected to the stator core cannot effectively pierce the residual thermosetting material exposed on the stator, and the end connected to the end cover is likely to cause creep, resulting in Poor reliability, prone to poor conduction

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