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US 2006/0220496 A1Published application
Vibration wave driving apparatus
AssigneeCanon Kabushiki Kaisha
InventorKosuke Fujimoto
Life of this patent
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Abstract
This invention provides a vibration wave driving apparatus which makes it possible to reduce the localized abrasion of a contact member, and reduce the deterioration of performance due to long-term driving. This vibration wave driving apparatus has a contact member which is provided with fixed portions fixed to the lengthwise opposite end portions of the vibration expanding portion of the vibration member, and a connecting portion integrally connecting the two fixed portions together and having opposite ends fixed beam structure divided into a plurality.
Claims15
A vibration wave driving apparatus having:
- a vibration element provided with an electro-mechanical energy converting element;
- a moving element driven by vibration generated by said vibration element;
- and
- a plurality of contact members interposed between said vibration element and said moving element;
- wherein each of the contact members is provided with:
- a plurality of fixed portions fixed to one of said vibration element and said moving element;
- a plurality of connecting portions connected among said plurality of fixed portions, individually elastically deformable in a state separate from one of said vibration element and said moving element to which said fixed portions are fixed, and disposed at intervals narrower than the interval between adjacent ones of said contact members;
- and
- a contact surface constituting a portion of each of said connecting portions, and contacting with said moving element or said vibration element opposed to said contact members.
6 more elements
Dependencies are inferred from the claim text.