Title:
PIEZOELECTRIC ACTUATOR, AND TIMEPIECE AND PORTABLE UNIT WITH PIEZOELECTRIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2003/075446
Kind Code:
A1
Abstract:
A diaphragm (10) is fixed to a bottom board (102) by a screw (13). A lever (20) is formed with a spring section (23), a rotor attaching section (25), and an insertion hole (22), the insertion hole (22) having a shaft (21) inserted therein to turnably support the lever (20) on the shaft. The spring section (23) is abutted against an eccentric pressure-adjusting cam (26), the latter being turned to change the elastic force of the spring section (23) so as to adjust the pressing force actuating the diaphragm (10) through a rotor (100).
Inventors:
SAWADA AKIHIRO
TAKAHASHI OSAMU
AKAHANE HIDEHIRO
HASHIMOTO YASUHARU
NAGAHAMA REIKO
TAKAHASHI OSAMU
AKAHANE HIDEHIRO
HASHIMOTO YASUHARU
NAGAHAMA REIKO
Application Number:
PCT/JP2003/002399
Publication Date:
September 12, 2003
Filing Date:
February 28, 2003
Export Citation:
Assignee:
SEIKO EPSON CORP (JP)
International Classes:
G04C3/12; G04C17/00; H01L41/09; H02N2/00; H02N2/12; H04R17/10; (IPC1-7): H02N2/12; G04C3/12
Foreign References:
| JP2000333480A | 2000-11-30 | |||
| JP2000188884A | 2000-07-04 | |||
| JPH11103584A | 1999-04-13 | |||
| JPH053688A | 1993-01-08 |
Other References:
See also references of EP 1450477A4
Attorney, Agent or Firm:
Kamiyanagi, Masataka c/o Intellectual Property Division SEIKO EPSON CORPORATION 3-5 (Owa 3-Chome Suwa-Shi, Nagano, JP)
Download PDF: