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Motor unit

A motor and stator technology, applied in the direction of electrical components, electromechanical devices, casings/covers/supports, etc., can solve the problem of difficult stable operation of the motor, and achieve the effect of simple structure and stable operation

Active Publication Date: 2020-11-17
NIPPON DENSAN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the weight of the stator sags the free end side held by the cantilever, which may make it difficult for the motor to operate stably.

Method used

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Embodiment Construction

[0021] Hereinafter, a motor unit according to an embodiment of the present invention will be described with reference to the drawings. In addition, the scope of the present invention is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical idea of ​​the present invention.

[0022] In the following description, the direction of gravity is defined based on the positional relationship in the case where the motor unit 1 is mounted on a vehicle positioned on a horizontal road surface. In addition, in the drawings, an XYZ coordinate system is appropriately shown as a three-dimensional orthogonal coordinate system. In the XYZ coordinate system, the Z-axis direction represents the vertical direction (ie, the vertical direction), the +Z direction is the upper side (the opposite side to the gravitational direction), and the -Z direction is the lower side (the gravitational direction). In addition, the X-axis direction is a direction ...

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Abstract

A motor unit includes a rotor, a stator, and a housing accommodating the rotor and the stator. The housing has a stator holding part that holds the stator on one side in the axial direction along themotor axis. The motor unit is provided with a supporting component which is configured along at least the lower part of the end surface of the other side in the axial direction of the stator and is fixed by at least two fixing bolts. The support member has a support protrusion extending radially outward from the radial outer edge. The radially outer end of the support protrusion is located radially outward of the outer peripheral surface of the stator, and is in contact with at least a portion of the inner peripheral surface of the housing facing the outer peripheral surface of the lower portion of the stator.

Description

technical field [0001] The present invention relates to motor units. Background technique [0002] In the electric motor described in Japanese Patent Laid-Open No. 2017-127103, the stator includes a plurality of bolt insertion portions, and the plurality of bolt insertion portions are formed radially closer to the plurality of teeth than the plurality of tooth portions at intervals in the circumferential direction. outside location. The stator core (ie, the motor stator) is fixed to the casing by inserting bolts into the bolt holes of the bolt insertion portions, and screwing the distal ends of the bolts into the screw holes formed in the casing. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2017-127103 [0004] When an electric motor is used for driving a vehicle, it is arranged so that the central axis of the electric motor is horizontal. In the electric motor described in Japanese Patent Application Laid-Open No. 2017-127103, the stator for the electric mot...

Claims

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Application Information

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IPC IPC(8): H02K5/04H02K5/16
CPCH02K5/04H02K5/16Y02T10/64
Inventor 水谷龙彦初田匡之藤原久嗣石川勇树
Owner NIPPON DENSAN CORP