Title:
LINEAR ACTUATOR
Document Type and Number:
Japanese Patent JP2973312
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To put to practical use a linear actuator for automobile suspension, wherein ring coils and ring magnets are coaxially placed with the ring coils positioned inside the ring magnets.
SOLUTION: A guide rod 27 is supported inside a guide pipe 23 at a guide piston 24 and a guide bush 28 in two places in the axial direction. A coil retaining pipe 13 is coaxially placed outside the guide pipe 23 in the radial direction. A plurality of ring coils 14 are fit onto the circumference of the coil retaining pipe, and the coil retaining pipe is coupled with the guide rod 27 through a coupling boss 34 on the one end side. A magnet retaining pipe 11 has a plurality of ring magnets 12 fit on the inner circumference side so that when it and the coil retaining pipe 13 are relatively moved in the axial direction, the ring magnets 12 do not interfere with the ring coils 14, and is coaxially placed outside the coil retaining pipe 13 and coupled with the guide pipe 23 through an end block 17.
Inventors:
Kitajima, Akira
Sato, Kunihito
Ono, Masato
Kaminaga, Tomoharu
Aisaka, Masayuki
Sato, Kunihito
Ono, Masato
Kaminaga, Tomoharu
Aisaka, Masayuki
Application Number:
JP1998000156019
Publication Date:
September 03, 1999
Filing Date:
June 04, 1998
Export Citation:
Assignee:
TOKYU CAR CORP
SHICOH ENG CO LTD
SHICOH ENG CO LTD
International Classes:
B60G17/00; H02K33/00; H02K33/18; (IPC1-7): H02K33/18
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