Linear vibration wave motor
AssigneeCanon Kabushiki Kaisha
InventorsTakuo Okuno, Hiroyuki Seki
Life of this patent
Estimating the term…
Abstract
A vibration wave motor, in which a periodic voltage is applied to an electrostrictive element to generate a travelling vibration wave in the surface of a vibration member thereof, and in which a movable member having a friction member is driven on the vibration member by the vibration wave, includes a guide member for controlling the direction of displacement of the movable member, the guide member being disposed to prevent the movable member from being displaced in directions other than a predetermined direction of movement, and a flexible member connecting the movable member and the friction member.
Claims10
A vibration wave motor in which an electrostrictive member is joined to a vibration member and a periodic voltage is applied to said electrostrictive member to thereby generate a travelling vibration wave in said vibration member and which has a movable member movable on said vibration member by the vibration wave generated in said vibration member, said motor comprising:
- a support member for supporting said vibration member on a base plate;
- a friction member integrally connected to said movable member, said friction member being in contact with said vibration member and transmitting thereto a driving force for driving said movable member on said vibration member by said vibration wave;
- a guide member disposed along said vibration member, said movable member being permitted to be displaced in a direction in which it is guided by said guide member;
- and
- wherein said vibration wave motor connects said movable member and said friction member together through a flexible member.
A vibration wave motor in which an electrostrictive member is joined to a vibration member and a periodic voltage is applied to said electrostrictive member to thereby generate a travelling vibration wave in said vibration member and which has a movable member movable on said vibration member by the vibration wave generated in said vibration member, said motor comprising:
- a support member for supporting said vibration member on a base plate;
- a friction member integrally connected to said movable member, said friction member being in contact with said vibration member and transmitting thereto a driving force for driving said movable member on said vibration member by said vibration wave;
- a restraining member for retraining the displacement of said movable member is directions other than a predetermined direction of movement;
- and
- wherein said vibration wave motor connects said movable member and said friction member together through a flexible member.
A vibration wave motor in which an electrostrictive member is joined to a vibration member and a periodic voltage is applied to said electrostrictive member to thereby generate a travelling vibration wave in said vibration member and which has a movable member movable on said vibration member by the vibration wave generated in said vibration member, said motor comprising:
- a friction member integrally connected to said movable member, said friction member being in contact with said vibration member and transmitting thereto a driving force for driving said movable member on said vibration member by said vibration wave;
- a guide member disposed along said vibration member, said movable member being permitted to be displaced in a direction in which it is guided by said guide member;
- and
- wherein said vibration wave motor connects said movable member and said friction member together through a flexible member.
A vibration wave motor in which an electrostrictive member is joined to a vibration member and a periodic voltage is applied to said electrostrictive member to thereby generate a travelling vibration wave in said vibration member and which has a movable member movable on said vibration member by the vibration wave generated in said vibration member, said motor comprising:
- a friction member integrally connected to said movable member, said friction member being in contact with said vibration member and transmitting thereto a driving force for driving said movable member on said vibration member by said vibration wave;
- a restraining member for restraining the displacement of said movable member in directions other than a predetermined direction of movement;
- and
- wherein said vibration wave motor connects said movable member and said friction member together through a flexible member.
A vibration wave motor in which an electrostrictive member is joined to a vibration member and a periodic voltage is applied to said electrostrictive member to thereby generate a travelling vibration wave in said vibration member and which has a movable member movable on said vibration member by the vibration wave generated in said vibration member, said motor comprising:
- (a) a friction member integrally connected to said movable member, said friction member being in contact with said vibration member and transmitting thereto a driving force for driving said movable member on said vibration member by said vibration wave;
- (b) a resilient member disposed between said friction member and said movable member;
- and
- (c) an adjusting member for adjusting the resilient force by said resilient member between said friction member and said movable member.
Dependencies are inferred from the claim text.