Title:
DISPLACEMENT AMPLIFYING MECHANISM FOR PIEZOELECTRIC ELEMENT AND DRIVING METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2606069
Kind Code:
B2
Abstract:
PURPOSE: To provide a miniature amplifying mechanism excellent in high speed response at low cost wherein the amplification factor of one piezoelectric element is equal to or lower than that of a conventional piezoelectric displacement amplifying mechanism.
CONSTITUTION: An amplifying part comprising two buckling springs 2A/2B welded into a ring is boded directly to two driving end faces 3a/3b of a piezoelectric element 1 generating distortion through piezoelectric effect depending on a driving voltage being applied externally. Distortion of the element 1 in the direction of an arrow A is amplified by the elongation of the buckling springs upon elongation of the element 1 and the displacement in the direction of an arrow B is taken out from the bridge-like apex of the buckling springs 2A/2B thus decreasing the number of components as compared with a conventional mechanism where the amplification is carried out in two stages through a lever arm. Two piezoelectric may be fixed to the outside of the amplifying part in order to compress the buckling springs. The buckling springs may have asymmetric shape and may be odd in number.
More Like This:
Inventors:
Landlord Kazumasa
Kiyotaka Hamada
Inagawa Masako
Kiyotaka Hamada
Inagawa Masako
Application Number:
JP9474393A
Publication Date:
April 30, 1997
Filing Date:
April 22, 1993
Export Citation:
Assignee:
NEC
International Classes:
H01L41/09; (IPC1-7): H01L41/09
Domestic Patent References:
| JP6142284A | ||||
| JP61168025A | ||||
| JP63216392A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)