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US 5,627,425 AGranted
Vibrating unit
AssigneeMurata Manufacturing Co., Ltd.
InventorsHiroaki Kaida, Jiro Inoue
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a vibrating unit comprising vibration cancel means which is coupled to a vibration source through a vibration transfer part. The vibration cancel means receives vibration from the vibration source and resonates in a bending mode, to cancel vibration as propagated by a dynamic vibration absorbing phenomenon.
Claims29
A vibrating unit comprising:
- a vibration source that generates vibration;
- a vibration transfer part connected to said vibration source, said vibration transfer part receiving and propagating said vibration from said vibration source;
- and
- a vibration cancelling device connected to said vibration transfer part for receiving the propagated vibration, said vibration cancelling device vibrating at a frequency such that said propagated vibration is cancelled in accordance with a dynamic vibration absorbing phenomenon;
- wherein
- said vibration cancelling device is a dynamic damper and said vibration cancelling device vibrates at a natural frequency substantially identical to a frequency of said vibration propagated from said vibration source.
3 more elements
A piezo-resonator comprising:
- a piezo-resonance unit that generates vibration;
- a vibration transfer part connected to said piezo-resonance unit for receiving and propagating said vibration from said piezo-resonance unit;
- and
- a dynamic damper connected to said vibration transfer part for receiving propagated vibration so that said dynamic damper vibrates at a frequency such that said propagated vibration is cancelled in accordance with a dynamic vibration absorbing phenomenon;
- wherein
- said dynamic damper vibrates at a natural frequency substantially identical to a frequency of said vibration propagated from said piezo-resonance unit.
3 more elements
A vibrating unit comprising:
- a vibration source for generating vibration;
- a vibration transfer part connected to said vibration source, said vibration transfer part receiving and propagating vibration from said vibration source and having a first portion and a second portion;
- at least one resonant part connected to said vibration transfer part for receiving the propagated vibration from said vibration transfer part;
- a holding part connected to said vibration transfer part so that said first portion of said vibration transfer part is located between said vibration source and said at least one resonant part and said second portion of said vibration transfer part is located between said at least one resonant part and said holding part;
- wherein
- said at least one resonant part having a shape and being arranged to vibrate at a natural frequency that is substantially identical to a frequency of said vibration propagated from said vibration source.
3 more elements
A vibrating unit comprising:
- a vibration source for generating vibration;
- a vibration transfer part connected to said vibration source, said vibration transfer part receiving and propagating vibration from said vibration source and having a first portion and a second portion;
- at least one resonant part connected to said first portion of said vibration transfer part for receiving the propagated vibration from said first portion of said vibration transfer part;
- a holding part connected to said second portion of said vibration transfer part;
- wherein
- said at least one resonant part has a shape and is arranged to receive the propagated vibration from said vibration transfer part and vibrate at a natural frequency such that substantially no vibration is transmitted from said at least resonant part to said second portion of said vibration transfer part and said holding part.
3 more elements
A vibrating unit comprising:
- a vibration source for generating vibration;
- a vibration transfer part having a first portion connected to said vibration source, said vibration transfer part arranged to receive and propagate vibration from said vibration source and having a second portion;
- at least one resonant part connected to said first portion of said vibration transfer part for receiving the propagated vibration from said vibration transfer part and connected to said second portion of said vibration transfer part;
- a holding part connected to said second portion of said vibration transfer part;
- wherein
- said vibration transfer part, said at least one resonant part and said holding part are arranged so that vibration propagated by said vibrating source is transmitted along substantially a straight line path from said vibration source, along said first portion of said vibration transfer part to said at least one resonant part where said vibration is substantially cancelled by said at least one resonant part vibrating at its natural frequency which is substantially the same as the frequency of the propagated vibration from said vibration transfer part so that substantially no vibration is transmitted to said second portion of said vibration transfer part.
3 more elements
A vibrating unit comprising:
- a vibration source for generating vibration;
- a vibration transfer part connected to said vibration source, said vibration transfer part arranged to receive and propagate vibration from said vibration source;
- at least one resonant part connected to said vibration transfer part for receiving the propagated vibration from said vibration transfer part, said at least one resonant part comprising a solid member, wherein
- said at least one resonant part and said vibration transfer part are arranged to have a shape that is substantially the same as a cross and so that vibration propagated by said vibrating source is transmitted from said vibration source, along a first portion of said vibration transfer part to said at least one resonant part, said at least one resonant part being arranged and having a shape such that when said at least one resonant part receives the vibration from said first portion of said vibration transfer part, said at least one vibration part vibrates at a natural frequency to substantially eliminate the vibration.
1 more element
Dependencies are inferred from the claim text.