Title:
【発明の名称】接触維持時間を延長した迅速応動加速度計
Document Type and Number:
Japanese Patent JP2572205
Kind Code:
B2
Abstract:
An acceleration sensor comprises a tube formed of an electrically-conductive, nonmagnetic material; an annular magnetically-permeable element, such as a iron washer, encircling a longitudinal portion of the tube; a magnetic sensing mass in the tube which magnetically interacts with the washer so as to be magnetically biased towards a first or "rest" position in the tube characterized in that a longitudinal portion of the sensing mass is situated within the portion of the tube encircled by the washer, the sensing mass being displaced from its rest position in the tube towards a second position therein in response to an accelerating force exceeding the magnetic bias thereon; and a switch operated by the sensing mass when the sensing mass is displaced to its second position in the tube. The instant accelerometer features a low threshold magnetic bias of the sensing mass of perhaps a fraction of 1 g to provide a quickened sensing mass response to acceleration inputs of short duration; whereafter the magnetic bias increases so as to peak when the sensing mass is displaced to a position within the passage intermediate its first and second positions therein, and thereafter decreases to a value equal to or slightly greater than 0.8 gs to maximize switch contact dwell time.
Inventors:
ANDAASON SUCHIIBUN JEI
BEERU REONAADO DABURYU
BEERU REONAADO DABURYU
Application Number:
JP50841594A
Publication Date:
January 16, 1997
Filing Date:
September 21, 1993
Export Citation:
Assignee:
OOTOMOCHIBU SHISUTEMUZU LAB INC
International Classes:
G01P15/08; G01P1/00; G01P15/00; G01P15/135; G01P21/00; H01H35/14; (IPC1-7): G01P15/00; G01P15/135; H01H35/14
Attorney, Agent or Firm:
Akira Asamura (3 outside)