Strain wave gearing with built-in motor
AssigneeHarmonic Drive Systems Inc.
InventorsTomoki Terashima, Kiyoto Kobayashi, Sachio Oshima
Life of this patent
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Abstract
A strain wave gearing with a built-in motor is provided with a motor, a wave gear mechanism enclosing the motor coaxially, and a heat-insulation spacing formed therebetween. The wave gear mechanism has a wave generator attached to the motor rotor so as to rotate integrally with the motor rotor. A wave generator plug of the wave generator is fixed to a rotor magnet back yoke of the motor rotor so as to enclose the rotor magnet back yoke. The spacing is formed in a contact surface portion between the rotor magnet back yoke and the wave generator back yoke, whereby heat transfer from the motor to the wave gear mechanism is suppressed.
Claims8
A strain wave gearing with a built-in motor, comprising:
- a wave gear mechanism;
- a motor coaxially incorporated in a center portion of the wave gear mechanism;
- and
- a heat-insulating spacing disposed between the wave gear mechanism and the motor;
- wherein the motor has a motor stator, and a motor rotor disposed so as to enclose the motor stator;
- the wave gear mechanism has a wave generator attached to the motor rotor so as to rotate integrally with the motor rotor;
- the wave generator is disposed so as to enclose the motor rotor;
- and
- the spacing is formed between the motor rotor and the wave generator.
Dependencies are inferred from the claim text.