Claims
- 1. An acceleration sensor comprising:
- a plurality of plate-shaped vibrating bodies made of piezoelectric material connected in a folded manner; and
- electrodes formed on surfaces of said vibrating bodies, wherein
- said vibrating bodies vibrate in such a manner that longitudinal expansion and contraction take place inversely at both sides a folding portion of said vibrating bodies by applying a driving signal to said electrodes.
- 2. An acceleration sensor according to claim 1, wherein two said vibrating bodies are connected in a folded manner at a right angle, and a pair of said electrodes are formed on opposite surfaces of each of said vibrating bodies.
- 3. An acceleration sensor according to claim 1 which further comprises frames connected with each other for supporting said vibrating bodies.
- 4. An acceleration sensor according to claim 2, wherein each of said vibrating bodies is polarized in an direction perpendicular to said electrodes.
- 5. An acceleration sensor according to claim 3, wherein each of said vibrating bodies is polarized in an direction perpendicular to said electrodes.
- 6. An acceleration sensor according to claim 2, wherein driving signals having inverse phase are applied to two said pairs of said electrodes on said vibrating bodies.
- 7. An acceleration sensor according to claim 3, wherein driving signals having inverse phase are applied to two pairs of said electrodes on said vibrating bodies.
Priority Claims (6)
Number |
Date |
Country |
Kind |
5-066231 |
Mar 1993 |
JPX |
|
5-066233 |
Mar 1993 |
JPX |
|
5-085712 |
Mar 1993 |
JPX |
|
5-123421 |
Apr 1993 |
JPX |
|
5-123422 |
Apr 1993 |
JPX |
|
5-125485 |
Apr 1993 |
JPX |
|
Parent Case Info
This is a divisional, of application Ser. No. 08,202,017 filed Feb. 25, 1994, pending.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4281298 |
Gounju |
Jul 1981 |
|
4633204 |
Gounji et al. |
Dec 1986 |
|
Foreign Referenced Citations (4)
Number |
Date |
Country |
2328807 |
Jan 1975 |
DEX |
249874 |
Sep 1994 |
JPX |
249873 |
Sep 1994 |
JPX |
06289046 |
Oct 1994 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
202017 |
Feb 1994 |
|