US Patent No. 9,364,956

MULTIPLE JOINTS ROBOT WITH MECHANISM FOR COOLING MOTOR


Patent No. 9,364,956
Issue Date June 14, 2016
Title Multiple Joints Robot With Mechanism For Cooling Motor
Inventorship Hideyuki Watanabe, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 9,364,956

1. A multiple joint robot, comprising:
a movable body;
a motor for generating power to actuate the movable body,
a motor housing accommodating the motor in an interior of the motor housing so as to isolate the motor from an exterior; and
a cooling structure for cooling the motor by dissipating heat generated from the motor,
wherein the motor has on a side of a motor body a heat generating surface on which heat is generated,
wherein the cooling structure includes a heat conductor situated in the interior of the motor housing, the heat conductor
forming a heat conducting path for conducting heat from the motor to the motor housing,

wherein the heat conductor has
a first contact surface adapted to be in contact with the heat generating surface of the motor, and
a second contact surface adapted to be in contact with an inner surface of the motor housing,
wherein the heat conducting path is formed by sliding at least one of the first contact surface and the second contact surface
on the opposed heat generating surface of the motor or inner surface of the motor housing to adjust a position of the heat
conductor, and then fixing the heat conductor by a fixture,

wherein the heat conductor comprises a metal plate, and
wherein the fixture is attached around the motor and the heat conductor.