Work machine
AssigneeKoki Holdings Co., Ltd.
InventorsKen INUI, Ryosuke NAKANO, Chisho SO, Satoru GUNJI
Life of this patent
Estimating the term…
Abstract
Provided is a work machine. The work machine has a brushless motor, and the brushless motor has a plurality of teeth. A stator coil is wound around each of the teeth. An end portion of each stator coil is connected to a circuit board. The circuit board has: a first conductor pattern connecting the stator coils wound around adjacent teeth; and a second conductor pattern and a third conductor pattern each connecting the stator coils wound around the non-adjacent teeth. The plurality of stator coils are in the form of delta connection parallel winding.
Claims22
A work machine, comprising:
- a brushless motor having a stator having a plurality of teeth, a rotor rotating with respect to the stator, and a winding having coils wound around each of the plurality of teeth;
- and
- an output portion driven by the brushless motor,
- wherein in the winding, a plurality of the coils of different phases are delta-connected, and a plurality of the coils of the same phase are connected in parallel,
- the work machine further comprising:
- a short-circuit portion having a first short-circuit portion that connects coils wound around teeth that are adjacent and a second short-circuit portion that connects coils wound around teeth that are non-adjacent.
A work machine, comprising:
- a brushless motor having a stator having a plurality of teeth, a rotor rotating with respect to the stator, and a winding wound around the stator;
- a circuit board to which the winding is connected;
- and
- an output portion driven by the brushless motor,
- wherein the winding has a plurality of coils forming mutually different phases and a plurality of coils forming the same phase, the plurality of the coils of different phases are delta-connected, and the plurality of the coils of the same phase are connected in parallel, and
- the plurality of coils forming mutually different phases and/or the plurality of coils forming the same phase are connected by a short-circuit portion provided on the circuit board.
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Dependencies are inferred from the claim text.