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Motor

A motor and rotor technology, applied in the field of motors, can solve the problems of axial size growth and increase, and achieve the effect of ensuring detection accuracy

Inactive Publication Date: 2013-01-16
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A space is required for arranging and arranging these components on the rotating shaft, and the axial dimension of the rotating shaft, housing, etc. increases and increases.

Method used

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Examples

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Embodiment Construction

[0013] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

[0014] figure 1 It is a cross-sectional view of the motor 10 according to the first embodiment of the present invention. The motor 10 includes a housing 11, a rotating shaft 12, a motor rotor 13, a motor stator 14, a resolver 15, and the like.

[0015] The casing 11 is formed in a cylindrical shape with one side open in the axial direction, and a bearing support portion 18 is formed on a side wall 17 provided on the other axial side portion, and a first bearing 19 fitted to the bearing support portion 18 The rotating shaft 12 is rotatably supported. In addition, the rotating shaft 12 is also rotatably supported by a second bearing 20 which is one component of a resolver unit 21 to be described later.

[0016] At an axially intermediate portion of the rotary shaft 12 , a motor rotor 13 is provided that is rotatable integrally with the rotary shaft 12 . The m...

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Abstract

A motor includes: a rotary shaft (12); a rotor (13) that is provided on the rotary shaft (12) so as to be rotatable together with the rotary shaft (12); a stator (14) that is provided radially outward of the rotor (13); a housing (11) that supports the stator (14); a resolver (15) that has a resolver rotor (35) rotatable together with the rotary shaft (12) and a resolver stator (34) radially facing the resolver rotor (35); and a resolver unit (21) that is an assembly component including the resolver stator (34). The resolver unit (21) includes a bearing (20) that rotatably supports the rotary shaft (12) and a case member (41) that has a first fitting portion (46) to which the resolver stator (34) is fitted and a second fitting portion (47) to which the bearing (20) fitted and that is detachably connected to the housing (11). At least part of the resolver unit (21) is arranged on a radially inner side of the rotor (13).

Description

technical field [0001] This invention relates to motors. Background technique [0002] A motor with a resolver is disclosed in EP2078662. The motor includes: a rotating shaft; a motor rotor provided on the rotating shaft so as to be integrally rotatable with the rotating shaft; a motor stator provided radially outside the motor rotor; a case supporting the motor stator; The resolver has a resolver rotor rotatable integrally with the rotary shaft, and a resolver stator radially opposed to the resolver rotor. [0003] In the motor described in EP2078662, a motor rotor and a resolver rotor are arranged axially on a rotating shaft. In addition, bearings for supporting the rotating shaft are arranged along the axial direction together with the motor rotor and the resolver rotor. A space for arranging and arranging these components is required on the rotating shaft, and the axial dimensions of the rotating shaft, the casing, and the like are increased and enlarged. In particul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/00H02K5/00
CPCF16C35/077H02K11/0031G01B7/30H02K11/225F16C19/54F16C35/045
Inventor 武井智行松原健北畑浩二
Owner JTEKT CORP