摘要:
An ultrasonic motor has a stator (100) having a piezoelectric member (102) vibrated by a drive signal, and an elastic member for generating a traveling vibration wave in a drive surface (P1) thereof upon vibration of the piezoelectric member, a rotor (20) which is urged against the drive surface of the elastic member and is driven by the generated traveling vibration wave, a support member (30, 33, 36, 300, 303, 306, 309, 313) integrally molded on the elastic member, and a fixing member for holding the support member. In the ultrasonic motor, one end face (P3) of the support member is formed at the same level as the drive surface (P1) or the junction surface (P2) of the elastic member, an electrode (13) of the piezoelectric member is grounded through the support member, a plurality of holes (312, 316) are regularly formed in the circumferential direction of the support member, or the support member is fixed to the fixing member by an adhesive (400), thereby improving drive efficiency.
摘要:
A friction material containing at least a rubber-like elastic body is provided between a vibrating stator (2) provided with a piezoelectric element (4) for producing travelling wave and a rotor of an ultrasonic motor. Noise is suppressed and motor capabilities such as driving torque and wear are fairly im proved.
摘要:
Contact member (3) of composite material made of organic fiber and resin is provided on an inner surface of a rotor (4) or a stator (2) of an ultrasonic motor. Noise is suppressed. starting torque is better and wear is fairly decreased.
摘要:
Disclosed is a stick-slip drive comprising a base and a rotor which are in contact with one another via a friction surface and are coupled to one another in such a way that the rotor can perform an inertial motion relative to the base, characterized in that two materials, a noble metal and a ceramic material, are paired up on the friction surface between the base and the rotor.