| CPC H02K 3/522 (2013.01) [H02K 2203/09 (2013.01); H02K 2203/12 (2013.01)] | 5 Claims |
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1. A brushless motor comprising:
a stator core; and
a rotor which rotates with respect to the stator core,
the brushless motor having:
a core main body part provided in the stator core and formed in a cylindrical shape;
a plurality of teeth provided on the core main body part and protruding radially to a radially inner side of the core main body part;
a tooth main body part provided in the tooth and having a base end side connected to the core main body part;
a tooth tip part which is provided at a tip side of the tooth main body part and is wider than the tooth main body part in a circumferential direction of the core main body part;
a covering part surrounding the tooth main body part; and
a coil support wall made of resin which is overlapped with the tooth tip part from an axial direction of the core main body part and supports a coil wound around the core main body part from the radially inner side of the core main body part,
wherein the coil support wall comprises a first wall part and a second wall part arranged in the circumferential direction of the core main body part,
a portion of the tooth tip part protruding from the tooth main body part forms a tooth protruding part,
the first wall part and the second wall part are connected to each other at an angle at a portion of the tooth protruding part protruding from the tooth main body part in the circumferential direction of the core main body part, and a thickness dimension of the second wall part in a radial direction of the core main body part is equal to or larger than a thickness dimension of the first wall part,
a boundary line between the first wall part and the second wall part is arranged at a portion of the tooth protruding part in the radial direction of the core main body part, and
a distance between the boundary line and the covering part in the circumferential direction is greater than a diameter dimension of the coil.
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