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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(shù)領(lǐng)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

Since the caulking dowel portion 160 is arranged on the outer side in the radial direction of the yoke 22, the electromagnetic steel sheets 222A constituting the laminated steel sheet 222 are easily opened in the axial direction in the yoke protruding portion 22b located on the inner side in the radial direction. Thus, it is preferable to perform the processing in a state where an inner region in the radial direction is compressed in the axial direction using a jig to suppress the opening when caulking the plurality of electromagnetic steel sheets 222A to produce the laminated steel sheet 222 and when impregnating and bonding the laminated steel sheet 222 in which the plurality of electromagnetic steel sheets 222A are laminated in the axial direction.

權(quán)利要求

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