IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0728034
(2007-03-23)
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등록번호 |
US-7770902
(2010-08-30)
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발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
8 인용 특허 :
4 |
초록
▼
An in-arm suspension (12) is provided for actively controlling a suspension arm (20) mounted to a vehicle frame (14). The suspension arm (20) has a housing (60) in which the a compressible fluid strut (32) and a fluid control section (90) are enclosed. The compressible fluid strut (32) includes a cy
An in-arm suspension (12) is provided for actively controlling a suspension arm (20) mounted to a vehicle frame (14). The suspension arm (20) has a housing (60) in which the a compressible fluid strut (32) and a fluid control section (90) are enclosed. The compressible fluid strut (32) includes a cylinder (134) and a piston rod (136) which is urged to extend from within the cylinder (134) in response to fluid pressure applied to compressible fluid disposed within the cylinder (134). A damper piston (174) is mounted to an interior portion of the piston rod (136), and moves with the piston rod (136) to pass the compressible fluid through the damper piston 174 and attenuate bounce and rebound of the piston rod (136) within the cylinder (134). A damper lock (210) is mounted to the piston rod (136) for selectively preventing the flow of compressible fluid through the damper piston (174).
대표청구항
▼
What is claimed is: 1. An in-arm suspension for supporting a frame, comprising: a stator mounted to the frame, said stator including a mounting flange having a mounting boss, and an outer pivot plate fixedly secured to said mounting boss of said mounting flange to fixedly secure said outer pivot pl
What is claimed is: 1. An in-arm suspension for supporting a frame, comprising: a stator mounted to the frame, said stator including a mounting flange having a mounting boss, and an outer pivot plate fixedly secured to said mounting boss of said mounting flange to fixedly secure said outer pivot plate to said mounting flange: said mounting flange and said outer pivot plate each having circumferentially extending stator surfaces disposed in opposed relation, with said stator surface of said mounting flange spaced apart from said stator surface of said outer pivot plate; a suspension arm defining a housing having a first housing end a second housing end, with said first housing end having two circumferentially extending housing surfaces disposed in registration on opposite sides of said housing, and said second housing end secured to a spindle, with said spindle spaced apart from said housing surfaces: a first bearing and a second bearing adapted for securing between respective ones of said housing surfaces and said stator surfaces to rotatably secure said housing to said mounting flange and said outer pivot plate, with respective ones of said housing surfaces disposed in opposed relation to corresponding ones of said stator surfaces with said bearings disposed therebetween; a compressible fluid strut mounted within said housing of said suspension arm, said compressible fluid strut having a cylinder and a piston rod, wherein said piston rod is urged to move from within said cylinder in response to pressure applied to a compressible fluid disposed within said cylinder, wherein a first strut end of said compressible fluid strut is secured to said housing and a second strut end is secured to said stator, with at least one of said first and second strut ends spaced apart from at least one of a corresponding one of a central axis of said stator and a central axis of said spindle; and a fluid control section disposed within said housing of said suspension arm, said fluid control section having a fluid reservoir, a manifold, a pump and a pump motor, and including valves for selectively operating to actively control flow of said compressible fluid into and out of said compressible fluid strut. 2. The in-arm suspension according to claim 1, wherein said stator includes a peripheral edge portion from which extends a stationary support pin defined by a cylindrically-shaped boss to which said second end of said strut is secured, wherein said stationary support pin is offset from a centerline of an axis of rotation of said housing about said stator. 3. The in-arm suspension according to claim 1, wherein said housing of said suspension arm comprises a sidewall portion, a continuous enclosure portion which extends adjacent to a peripheral edge of said sidewall portion, and a cover plate for securing to a side of said continuous enclosure portion opposite which disposed opposite said sidewall portion, wherein said compressible fluid strut and said fluid control section is disposed within said continuous enclosure portion, between said sidewall portion and said cover plate. 4. The in-arm suspension according to claim 3, wherein said cover plate includes a moveable support pin defined by a cylindrically-shaped boss to which said first end of said strut is secured, and said moveable support pin is spaced apart form a central axis of said spindle. 5. The in-arm suspension according to claim 1, further comprising a fluid damper piston secured to an inward portion of said piston rod of said compressible fluid, said fluid damper having flow passages for passing compressible fluid through said fluid damper in response to movement of said piston rod within said cylinder. 6. The in-arm suspension according to claim 5, further comprising a damper lock for selectively actuating to move close said flow passages from passing compressible fluid through said fluid damper. 7. The in-arm suspension according to claim 5, further comprising a damper lock having a piston for selectively actuating to move said piston relative to said fluid damper piston close said flow passages from passing compressible fluid through said fluid damper. 8. The in-arm suspension according to claim 5, further comprising: said piston rod having a flow path extending through from a portion of said piston rod exterior of said cylinder to a portion of said piston rod disposed within said cylinder; a damper lock disposed proximate to said piston rod and said fluid damper piston, said damper lock having a piston which is moved in response to fluid pressure selectively applied within said flow path of said piston rod to seal said flow passages of said fluid damper piston to prevent flow of said compressible fluid through said fluid damper piston; and wherein said fluid control section further includes valving and for selectively applying said fluid pressure to said flow path of said piston rod. 9. An in-arm suspension for supporting a frame, comprising: a stator mounted to the frame; a suspension arm having a first end a second end, with said first suspension arm end rotatably mounted to said stator and said second end suspension arm end secured to a spindle; a compressible fluid strut mounted directly to said suspension arm, said compressible fluid strut having a cylinder and a piston rod, wherein said piston rod is urged to move from within said cylinder in response to pressure applied to a compressible fluid disposed within said cylinder, wherein a first strut end of said compressible fluid strut is secured to said suspension arm and a second strut end is secured to said stator, with at least one of said first and second strut ends spaced apart from at least one of a corresponding one of a central axis of said stator and a central axis of said spindle; a fluid damper piston secured to an inward portion of said piston rod of said compressible fluid, said fluid damper having flow passages for passing compressible fluid through said fluid damper in response to movement of said piston rod within said cylinder; said piston rod having a flow path extending through from a portion of said piston rod exterior of said cylinder to a portion of said piston rod disposed within said cylinder; a damper lock disposed proximate to said piston rod and said fluid damper piston, said damper lock having a piston which is moved in response to fluid pressure selectively applied within said flow path of said piston rod to seal said flow passages of said fluid damper piston to prevent flow of said compressible fluid through said fluid damper piston; and a fluid control section mounted directly to said suspension arm, said fluid control section having a fluid reservoir, a manifold, a pump and a pump motor, and including valves for selectively operating to actively control flow of said compressible fluid into and out of said compressible fluid strut and for selectively applying said fluid pressure to said flow path of said piston rod. 10. The in-arm suspension according to claim 9, wherein said stator comprises a mounting flange having a mounting boss, and an outer pivot plate fixedly secured to said mounting boss of said mounting flange. 11. The in-arm suspension according to claim 10, wherein said outer pivot plate has an outer peripheral surface which circumferentially extends to define a pivot plate bearing surface for said suspension arm, and a peripheral edge portion from which extends stationary support pin defined by a cylindrically-shaped boss to which said second end of said strut is secured. 12. The in-arm suspension according to claim 11, wherein said stationary support pin is offset from a central axis of said stator. 13. The in-arm suspension according to claim 11 wherein said suspension arm comprises a suspension arm housing having an open side and a cover plate which encloses said open side of said suspension arm housing to enclose said compressible fluid strut and said fluid control section within said suspension arm housing. 14. The in-arm suspension according to claim 13, wherein said cover plate includes a moveable support pin defined by a cylindrically-shaped boss to which said first end of said strut is secured. 15. The in-arm suspension according to claim 14, wherein said moveable support pin is spaced apart form a central axis of said spindle. 16. An in-arm suspension for supporting a frame, comprising: a stator mounted to the frame, said stator including a mounting flange having a mounting boss, and an outer pivot plate fixedly secured to said mounting boss of said mounting flange to fixedly secure said outer pivot plate to said mounting flange: said mounting flange and said outer pivot plate each having circumferentially extending stator surfaces disposed in opposed relation, with said stator surface of said mounting flange spaced apart from said stator surface of said outer pivot plate; a suspension arm defining a housing having a first housing end a second housing end, with said first housing end having two circumferentially extending housing surfaces disposed in registration on opposite sides of said housing, and said second housing end secured to a spindle, with said spindle spaced apart from said housing surfaces: a first bearing and a second bearing adapted for securing between respective ones of said housing surfaces and said stator surfaces to rotatably secure said housing to said mounting flange and said outer pivot plate, with respective ones of said housing surfaces disposed in opposed relation to corresponding ones of said stator surfaces with said bearings disposed therebetween; a compressible fluid strut mounted within said housing of said suspension arm, said compressible fluid strut having a cylinder and a piston rod, wherein said piston rod is urged to move from within said cylinder in response to pressure applied to a compressible fluid disposed within said cylinder, wherein a first strut end of said compressible fluid strut is secured to said housing and a second strut end is secured to said stator, with at least one of said first and second strut ends spaced apart from at least one of a corresponding one of a central axis of said stator and a central axis of said spindle; a fluid damper piston secured to an inward portion of said piston rod of said compressible fluid, said fluid damper having flow passages for passing compressible fluid through said fluid damper in response to movement of said piston rod within said cylinder; said piston rod having a flow path extending through from a portion of said piston rod exterior of said cylinder to a portion of said piston rod disposed within said cylinder; a damper lock disposed proximate to said piston rod and said fluid damper piston, said damper lock having a piston which is moved in response to fluid pressure selectively applied within said flow path of said piston rod to seal said flow passages of said fluid damper piston to prevent flow of said compressible fluid through said fluid damper piston; and a fluid control section disposed within said housing of said suspension arm, said fluid control section having a fluid reservoir, a manifold, a pump and a pump motor, and including valves for selectively operating to actively control flow of said compressible fluid into and out of said compressible fluid strut and for selectively applying said fluid pressure to said flow path of said pistons rod. 17. The in-arm suspension according to claim 16, wherein said stator includes a peripheral edge portion from which extends a stationary support pin defined by a cylindrically-shaped boss to which said second end of said strut is secured, wherein said stationary support pin is offset from a centerline of an axis of rotation of said housing about said stator. 18. The in-arm suspension according to claim 17, wherein said housing of said suspension arm comprises a sidewall portion, a continuous enclosure portion which extends adjacent to a peripheral edge of said sidewall portion, and a cover plate for securing to a side of said continuous enclosure portion opposite which disposed opposite said sidewall portion, wherein said compressible fluid strut and said fluid control section is disposed within said continuous enclosure portion, between said sidewall portion and said cover plate. 19. The in-arm suspension according to claim 18, wherein said cover plate includes a moveable support pin defined by a cylindrically-shaped boss to which said first end of said strut is secured, and said moveable support pin is spaced apart form a central axis of said spindle.
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