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US 5,684,353 AGranted
Vibration driven motor
AssigneeCanon Kabushiki Kaisha
InventorsKazuki Fujimoto, Ryuji Suzuki, Jun Tamai
Life of this patent
Estimating the term…
Abstract
In a vibration driven motor, a support member for supporting one end of a pressing member which presses a vibration member and a moving member receiving a drive force from the vibration member is fixed to a fixing member, with a result that the vibration member is indirectly supported.
Claims34
A vibration driven motor comprising:
- a vibration member having an axis;
- a movable member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined bending vibration of said first and second bending vibrations is generated in said vibration member, the combined bending vibration causing relative movement between said vibration member and said movable member;
- and
- a supporting structure comprising a central stem having one end disposed on a side of said movable member opposite said vibration member and the other end of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, the supporting structure being provided on or substantially on the axis of said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem and biasing said vibration member to press contact said movable member.
3 more elements
A vibration driven motor, comprising:
- a vibration member having an axis and including means for generating a bending vibration wave therein in response to an electrical signal applied thereto;
- a contact member frictionally engaging said vibration member and arranged to be driven by said bending vibration wave;
- and
- a supporting structure comprising a central stem having one end disposed on a side of said contact member opposite said vibration member and the other end of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem and generating an abutting force for relatively pressing said vibration member against said contact member, said supporting structure being located on or substantially on the axis of said vibration member.
1 more element
A vibration driven motor, comprising:
- a vibration member having an axis;
- a movable member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined bending vibration of said first and second bending vibrations is generated in said vibration member, the combined bending vibration causing relative movement between said vibration member and said movable member;
- a supporting structure comprising a central stem having one end disposed on a side of said movable member opposite said vibration member and the other end of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure being provided on or substantially on the axis of said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem, said biasing member biasing the central stem to apply a pressure force between said vibration member and said movable member;
- and
- a member for restricting a deviation of said vibration member within a predetermined range.
4 more elements
A system driven by a vibration motor as a driving source, comprising:
- a vibration member having an axis and including means for generating a bending vibration wave therein in response to an electrical signal applied thereto;
- a movable member frictionally engaging said vibration member and arranged to be driven by said bending vibration wave;
- a supporting structure comprising a central stem having one end disposed on a side of said movable member opposite said vibration member and the other end of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem and generating an abutting force for relatively pressing said vibration member against said movable member, said supporting structure being provided on or substantially on the axis of said vibration member;
- and
- a transmitting member engaged with an output portion of said movable member for transmitting a movement of said movable member to a load of said system.
2 more elements
A vibration driven motor comprising:
- a vibration member having an axis;
- a movable member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating a second bending vibration therein having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined bending vibration of said first and second bending vibrations is generated in said vibration member, the combined bending vibration causing relative movement between said vibration member and said movable member;
- and
- a supporting structure comprising a central stem having one end portion disposed at least substantially on a side of said movable member opposite said vibration member and another end portion of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem and biasing said vibration member to press contact said movable member, said supporting structure being provided on or substantially on the axis of said vibration member.
3 more elements
A system driven by a vibration motor as a driving source, comprising:
- a vibration member having an axis;
- a movable member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined bending vibration of said first and second bending vibrations is generated in said vibration member, the combined bending vibration causing relative movement between said vibration member and said movable member;
- a supporting structure comprising a central stem having one end disposed on a side of said movable member opposite said vibration member and another end portion of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem and biasing said vibration member to press contact said movable member, said supporting structure being provided on or substantially on the axis of said vibration member;
- and
- a transmitting member engaged with an output portion of said movable member for transmitting a movement of said movable member to a load of said system.
4 more elements
A vibration driven motor comprising:
- a vibration member having an axis;
- a rotary member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined vibration of said first and second bending vibrations is generated in said vibration member, the combined vibration causing relative movement between said vibration member and said rotary member;
- and
- a supporting structure comprising a central stem having one end disposed on a side of said rotary member opposite said vibration member, the other end of said central stem extending through said rotary member and engaging said vibration member thereby to support said vibration member, the supporting structure being provided on or substantially on the axis of said vibration member and comprising a biasing member for biasing said vibration member to press contact said rotary member.
3 more elements
A vibration driven motor, comprising:
- a vibration member having an axis and including means for generating a vibration wave therein in response to an electrical signal applied thereto;
- a rotary member coaxial with said vibration member, frictionally engaging said vibration member and arranged to be driven by said vibration wave;
- and
- a supporting structure comprising a central stem having one end disposed on a side of said rotary member opposite said vibration member, the other end of said central stem extending through said rotary member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said rotary member as said one end of said central stem and generating an abutting force for relatively pressing said vibration member against said rotary member, said supporting structure being located on or substantially on the axis of said vibration member.
1 more element
A vibration driven motor, comprising:
- a vibration member having an axis;
- a rotary member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined vibration of said first and second bending vibrations is generated in said vibration member, the combined vibration causing relative movement between said vibration member and said rotary member;
- a supporting structure comprising a central stem having one end disposed on a side of said rotary member opposite said vibration member, the other end of said central stem extending through said rotary member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure being provided on or substantially on the axis of said vibration member and also comprising a biasing member disposed substantially on the same side of said rotary member as said one end of said central stem for biasing said vibration member to press contact said rotary member;
- and
- a member for restricting a deviation of said vibration member within a predetermined range.
4 more elements
A system driven by a vibration motor as a driving source, comprising:
- a vibration member having an axis and including means for generating a vibration wave therein in response to an electrical signal applied thereto;
- a rotary member coaxial with said vibration member and arranged to be driven by said vibration wave;
- a supporting structure comprising a central stem having one end disposed at least substantially on a side of said rotary member opposite said vibration member, the other end of said central stem extending through said rotary member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said rotary member as said one end of said central stem generating an abutting force for relatively pressing said vibration member against said rotary member, said supporting member being provided on or substantially on the axis of said vibration member;
- and
- a transmitting member engaged with an output portion of said rotary member for transmitting a movement of said rotary member to a load of said system.
2 more elements
A vibration driven motor comprising:
- a vibration member having an axis;
- a rotary member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined vibration of said first and second bending vibrations is generated in said vibration member, the combined vibration causing relative movement between said vibration member and said rotary member;
- and
- a supporting structure comprising a central stem having one end portion disposed at least substantially on a side of said rotary member opposite said vibration member, the other end portion of said central stem extending through said rotary member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said rotary member as said one end of said central stem, said supporting structure being provided on or substantially on the axis of said vibration member.
3 more elements
A system driven by a vibration motor as a driving source, comprising:
- a vibration member having an axis;
- a rotary member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined vibration of said first and second bending vibrations is generated in said vibration member, the combined vibration causing relative movement between said vibration member and said rotary member;
- a supporting structure comprising a central stem having one end portion disposed at least substantially on a side of said rotary member opposite said vibration member, the other end portion of said central stem extending through said rotary member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said rotary member as said one end of said central stem, said supporting structure being provided on or substantially on the axis of said vibration member;
- and
- a transmitting member engaged with an output portion of said rotary member for transmitting a movement of said rotary member to a load of said system.
4 more elements
A vibration driven motor comprising:
- a vibration member having an axis;
- a movable member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined vibration of said first and second bending vibrations is generated in said vibration member, the combined vibration causing relative movement between said vibration member and said movable member;
- and
- a supporting structure comprising a central stem having one end disposed at least substantially on a side of said movable member opposite said vibration member and coupled to a fixed member, the other end of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, the supporting member being provided on or substantially on the axis of said vibration member and also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem biasing said engaging member to press contact said vibration member to said movable member.
3 more elements
A vibration driven motor, comprising:
- a vibration member having an axis and including means for generating a vibration wave therein in response to an electrical signal applied thereto;
- a contact member frictionally engaging said vibration member and arranged to be driven by said vibration wave;
- and
- a supporting structure comprising a central stem having one end at least substantially disposed on a side of said contact member opposite said vibration member and coupled to a fixed member, the other end of said central stem extending through said contact member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said contact member as said one end of said central stem generating an abutting force for relatively pressing said vibration member against said contact member, said supporting structure being located on or substantially on the axis of said vibration member.
1 more element
A vibration driven motor, comprising:
- a vibration member having an axis;
- a movable member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined vibration of said first and second bending vibrations is generated in said vibration member, the combined vibration causing relative movement between said vibration member and said movable member;
- a supporting structure comprising a central stem having one end disposed at least substantially on a side of said movable member opposite said vibration member and coupled to a fixed member, the other end of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting member being provided on or substantially on the axis of said vibration member and also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem biasing said engaging member to apply a pressure force between said vibration member and said movable member;
- and
- a member for restricting a deviation of said vibration member within a predetermined range.
4 more elements
A system driven by a vibration motor as a driving source, comprising:
- a vibration member having an axis and including means for generating a vibration wave therein in response to an electrical signal applied thereto;
- a movable member coaxial with said vibration member and arranged to be driven by said vibration wave;
- a supporting structure comprising a central stem having one end disposed at least substantially on a side of said movable member opposite said vibration member and coupled to a fixed member, the other end of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem generating an abutting force for relatively pressing said vibration member against said movable member, said supporting structure being provided on or substantially on the axis of said vibration member;
- and
- a transmitting member engaged with an output portion of said movable member for transmitting a movement of said movable member to a load of said system.
2 more elements
A vibration driven motor comprising:
- a vibration member having an axis;
- a movable member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined vibration of said first and second bending vibrations is generated in said vibration member, the combined vibration causing relative movement between said vibration member and said movable member;
- and
- a supporting structure comprising a central stem having one end portion disposed at least substantially on a side of said movable member opposite said vibration member and coupled to a fixed member, the other end portion of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem, said supporting structure being provided on or substantially on the axis of said vibration member.
3 more elements
A system driven by a vibration motor as a driving source, comprising:
- a vibration member having an axis;
- a movable member coaxial with said vibration member and frictionally engaged with said vibration member;
- a first electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a first bending vibration having a first direction in said vibration member in response to a first applied electrical signal;
- a second electro-mechanical energy conversion member functionally coupled to said vibration member for generating therein a second bending vibration having a second direction different from the first direction in response to a second applied electrical signal, whereby a combined vibration of said first and second bending vibrations is generated in said vibration member, the combined vibration causing relative movement between said vibration member and said movable member;
- a supporting structure comprising a central stem having one end portion disposed at least substantially on a side of said movable member opposite said vibration member and coupled to a fixed member, the other end portion of said central stem extending through said movable member and at least a portion of said vibration member and engaging said vibration member thereby to support said vibration member, said supporting structure also comprising a biasing member disposed substantially on the same side of said movable member as said one end of said central stem, said supporting structure being provided on or substantially on the axis of said vibration member;
- and
- a transmitting member engaged with an output portion of said movable member for transmitting a movement of said movable member to a load of said system.
4 more elements
Dependencies are inferred from the claim text.