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Motor

專利號
US11177714B2
公開日期
2021-11-16
申請人
NIDEC SERVO CORPORATION（JP Gunma）
發(fā)明人
Norihisa Imaizumi; Tsuyoshi Nakagawa
IPC分類
H02K3/46; H02K1/14; H02K15/06; H02K15/04
技術領域
dowel,stator,rotor,caulking,direction,radial,protruding,in,yoke,bobbin
地域： Kiryu

摘要

A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes a stator core including an annular core back and teeth extending in the radial direction from the core back, bobbins attachable to the teeth, respectively, in the radial direction, a coil wire wound around the bobbin, the bobbin including a cylindrical tube portion extending in the radial direction and a protruding piece that protrudes in the radial direction from an upper end, close to the core back, of the tube portion and is fixed to the core back, and an annular fixing member covering the core back and the protruding piece from an upper side.

說明書

CROSS REFERENCE TO RELATED APPLICATION

The present invention claims priority under 35 U.S.C. § 119 to Japanese Application No. 2018-183956 filed on Sep. 28, 2018 the entire contents of which are hereby incorporated herein by reference.

FIELD OF THE INVENTION

The present disclosure relates to a motor.

BACKGROUND

Conventionally, there is known a motor that rotates a rotor provided at the center of a stator by generating a rotating magnetic field by a plurality of coils wound around slots of the stator.

A configuration is known in which a lead-out wire exists outside the stator.

For example, when a sensor that detects a temperature, a vibration, a sound, or the like of a coil is provided to confirm a driving state of the motor, a wiring portion such as a signal line and a power supply line is wired so as to straddle the outer side and the inner side of the annular stator. In a state where the wiring portion wired so as to straddle the outer side and inner side of the stator is free, a problem such as interference with the rotor is likely to occur.

SUMMARY

權利要求

1
What is claimed is:1. A motor comprising:a rotor rotatable about a central axis; anda stator opposing the rotor in a radial direction; wherein the stator includes:a stator core including an annular core back and a plurality of teeth extending in the radial direction from the core back;a plurality of bobbins attachable to the plurality of teeth, respectively, in the radial direction;a coil wire wound around the bobbin, the bobbin includes a cylindrical tube portion extending in the radial direction and a protruding piece that protrudes in the radial direction from an upper end of the tube portion and is fixed to the core back; andan annular fixing member covering the core back and the protruding piece from an upper side; andthe fixing member covers a wiring portion and fixes the wiring portion between the fixing member and the core back, the wiring portion is wired so as to straddle an outer side in the radial direction and an inner side in the radial direction on an upper surface side of the annular core back from the upper surface side.2. The motor according to claim 1, whereinthe protruding piece includes a claw portion protruding to the upper side at a distal end; andthe fixing member includes:a lower surface portion that contacts an upper surface of the protruding piece located between the tube portion and the claw portion and contacts an upper surface of the wiring portion; anda circumferential surface portion that extends to the upper side from an end of the lower surface portion and opposes a surface of the claw portion facing the tube portion.3. The motor according to claim 1, wherein the wiring portion is bonded to the fixing member and the core back.4. The motor according to claim 1, wherein a sensor is provided at a terminal end of the wiring portion located on the outer side in the radial direction of the annular core back.5. The motor according to claim 1, wherein the bobbin is bonded to a surface of the core back exposed between the teeth.6. The motor according to claim 1, wherein the rotor is located on the outer side in the radial direction of the stator.
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