ACTUATOR AND OBJECT-DETECTING DEVICE USING THE SAME

Title:

ACTUATOR AND OBJECT-DETECTING DEVICE USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2004/074772

Kind Code:

A1

Abstract:

An actuator (1) has blade springs both ends of each of which are supported by a stationary member (2) and a movable member (3), drive means (6) for moving the movable member (3), position-detecting means (5) of which object of detection is the blade springs (4), and calculating means for calculating a displacement amount of the movable member (3) from the distance between a leaf spring (4) and the position-detecting means (5) detected by the position-detecting means (5). The structure above ensures positioning accuracy of the movable member (3).

Inventors:

TOMINAGA JUN (JP)
SHIGEMATSU RYOUHEI (JP)
MATSUMOTO ATSUO (JP)

Application Number:

PCT/JP2004/001791

Publication Date:

September 02, 2004

Filing Date:

February 18, 2004

Export Citation:

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Assignee:

NHK SPRING CO LTD (JP)
TOMINAGA JUN (JP)
SHIGEMATSU RYOUHEI (JP)
MATSUMOTO ATSUO (JP)

International Classes:

B60R21/01; G01B21/00; G01S7/03; G01S7/40; G01S7/48; G01V3/12; G01V8/12; B60R21/00; B60R21/0134; (IPC1-7): G01B21/00

Foreign References:

JP2002162470A	2002-06-07
JP2002162469A	2002-06-07
JPH11160436A	1999-06-18

Other References: