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US 5,313,132 AGranted
Elastic supporting member for a vibration driven motor
AssigneeCanon Kabushiki Kaisha
InventorTohru Nakanishi
Life of this patent
Estimating the term…
Abstract
A vibration driven motor including a vibration member for generating a vibration therein, a rotor arranged in frictional contact with the vibration member and driven by the vibration, a rotary output member, and a connection member connecting the rotor to the output member. The connection member includes a bent portion that is deformed in an axial direction on the rotary output member. In another aspect a connection member having a bent portion may be provided for engaging the vibration member at a predetermined portion. In each case, the bent portion(s) of the connection member absorbs any change in the dimensions thereof, e.g., due to a change in the temperature or other environmental factors.
Claims14
A vibration driven motor, comprising:
- a ring-shaped vibrating member having a surface portion, and generating a travelling vibration wave therein;
- a ring-shaped rotor having a surface portion in frictional contact with the surface portion of said vibrating member, said rotor being rotated by said travelling vibration wave;
- a rotary axle for outputting a rotary force;
- a ring-shaped connection member having a first end portion engaging said rotor, and a second end portion functionally engaging said axle, said connection member having a bent portion that is deformed in an axial direction of said axle at a portion between said first and second portions;
- and
- an elastic flat plate provided between said rotor and said axle for receiving a rotating torque generated between said rotor and said axle.
3 more elements
A vibration driven motor, comprising:
- a ring-shaped vibrating member having a surface portion and generating a travelling vibration therein:
- a ring-shaped rotor having a surface portion in frictional contact with the surface portion of said vibrating member, said rotor being rotated by said travelling vibration wave;
- a rotary axle for outputting a rotary force;
- a ring-shaped connection member having a first end portion engaging said rotor, and a second end portion functionally engaging said axle, said connection member having a bent portion that is deformed in a direction crossing the radial direction of said rotor at a portion between said first and second end portions;
- and
- an elastic flat plate provided between said rotor and said axle for receiving a rotating torque generated between said rotor and said axle.
3 more elements
A vibration driven motor, comprising:
- a vibration member for generating a vibration therein;
- a rotor arranged in frictional contact with said vibration member, and rotated by said vibration;
- a rotary output member;
- and
- a connection member connecting said rotor with said rotary output member, said connection member having a first end portion engaging said rotor, a second end portion functionally engaging said output member, and a bent portion which projects out of a plane defined by connecting said first and second end portions.
2 more elements
A vibration driven motor, comprising:
- a vibrating member for generating a vibration therein;
- a rotor arranged in frictional contact with said vibrating member, and rotated by said vibration;
- a rotary output member for transmitting a rotational force of said rotor to a load;
- and
- a connection member engaging said vibration member at a predetermined portion, said connection member having a bent portion deformed in an axial direction of said rotary output member.
2 more elements
A vibration driven motor, comprising:
- a vibration member for generating a vibration therein;
- a rotor arranged in frictional contact with said vibration member, and rotated by said vibration;
- a rotary output member;
- and
- a connection member connecting said rotor with said rotary output member, said connection member having a first portion engaging said rotor, a second portion functionally engaging said output member, and a bent portion which projects out of a plane defined by connecting said first and second portions.
2 more elements
A vibration driven motor, comprising:
- a vibration member for generating a vibration therein:
- a contact member arranged in frictional contact with said vibrating member, for receiving said vibration, said vibration causing relative movement between said vibration member and said contact member;
- an output member connected with one of said vibration member and said contact member, for transmitting a driving force to a load;
- and
- a connection member connecting said contact member with said output member, said connection member having a first portion engaging said contact member, a second portion functionally engaging said output member, and a bent portion which projects out of a plane defined by connecting said fist and second portions.
2 more elements
A vibration driven motor, comprising:
- a vibration member for generating a vibration therein;
- a contact member arranged in friction contact with said vibrating member, for receiving said vibration, said vibration causing relative movement between said vibration member and said contact member;
- an output member connected with one of said vibration member and aid contact member, for transmitting a driving force to a load;
- and
- a connection member engaging said vibration member at a predetermined portion, said connection member having a bent portion deformed in an axial direction of said output member.
2 more elements
Dependencies are inferred from the claim text.