Patent ID: 11969810
Assignee: KOKI HOLDINGS CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 0:
1. A work machine, comprising:
a motor comprising a rotary shaft;
a bearing rotatably supporting the rotary shaft;
a motor housing part housing the motor;
a battery pack for supplying power to the motor; and
a fan rotating integrally with the rotary shaft;
wherein the motor housing part is provided with a battery attachment/detachment part to which the battery pack is attached/detached,
the battery attachment/detachment part comprises two rails engaged with the battery pack,
the motor housing part is divisible into two segments in an axial direction of the rotary shaft,
one of the two rails is provided in one of the two segments, and the other of the two rails is provided in the other of the two segments, and
at least the one of the two segments is configured to form an indivisible integral structure and supports the bearing,
wherein the motor housing part is provided with an inlet port, and the motor is cooled by air flowing in from the inlet port,
wherein, by an inner wall provided in the one of the two segments, an inside of the motor housing part is separated into an inner space and an outer space, and the outer space is isolated from a flow path of the air flowing in from the inlet port.