Triple redundant electromechanical linear actuator and method
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02K-007/06
출원번호
US-0560971
(1983-12-12)
발명자
/ 주소
Baker Irwin G. (Bellevue WA)
출원인 / 주소
The Boeing Company (Seattle WA 02)
인용정보
피인용 횟수 :
26인용 특허 :
2
초록▼
Three motors (9, 13, 17) are operated independently to extend telescopically first, second, and third coaxial stages (30, 38, 52). Each motor (9, 13, 17) has an axial extension (28, 36, 48) on its rotor (12, 16, 20) that threadedly engages the respective stage (30, 38, 52). Extension (28) is fixed t
Three motors (9, 13, 17) are operated independently to extend telescopically first, second, and third coaxial stages (30, 38, 52). Each motor (9, 13, 17) has an axial extension (28, 36, 48) on its rotor (12, 16, 20) that threadedly engages the respective stage (30, 38, 52). Extension (28) is fixed to rotor (12). Extensions (36, 48) are spline connected to rotors (16, 20). First stage (30) is attached to extension (36) by a bearing (62). Second stage (38) is attached to extension (48) by a bearing (64). When first stage (30) extends or retracts, it carries with it second and third stages (38, 52) and extensions (36, 48). When second stage (38) extends or retracts, it carries with it third stage (52) and extension (48). Stages (30, 38, 52) are fixed against rotation relative to a housing (4).
대표청구항▼
A linear actuator comprising: a housing; a plurality of extendible/retractable coaxial stages positioned telescopically with respect to the housing and each other; a like number of electric motors, each of which has a stator portion attached to the housing, and a rotor portion; drive transmission me
A linear actuator comprising: a housing; a plurality of extendible/retractable coaxial stages positioned telescopically with respect to the housing and each other; a like number of electric motors, each of which has a stator portion attached to the housing, and a rotor portion; drive transmission means interconnecting each rotor portion and a different one of the stages for converting rotational motion of the rotor portion into linear axial motion of the stage; and mechanical connection means for mechanically interconnecting the stages with each other to cause each stage, when it moves in a linear axial direction, to carry with it any other stages positioned with respect to it in a given radial direction so that the linear axial displacements of the stages are mechanically summed.
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이 특허에 인용된 특허 (2)
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