WO2013025510A3 - Variable stiffness mechanism - Google Patents

Variable stiffness mechanism Download PDF

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Publication number
WO2013025510A3
WO2013025510A3 PCT/US2012/050355 US2012050355W WO2013025510A3 WO 2013025510 A3 WO2013025510 A3 WO 2013025510A3 US 2012050355 W US2012050355 W US 2012050355W WO 2013025510 A3 WO2013025510 A3 WO 2013025510A3
Authority
WO
WIPO (PCT)
Prior art keywords
suspension mechanism
springs
lever
pivot element
variable suspension
Prior art date
Application number
PCT/US2012/050355
Other languages
French (fr)
Other versions
WO2013025510A2 (en
Inventor
Olugbenga Moses ANUBI
Carl David CRANE, III
Shannon C. RIDGEWAY
Original Assignee
University Of Florida Research Foundation, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University Of Florida Research Foundation, Inc. filed Critical University Of Florida Research Foundation, Inc.
Publication of WO2013025510A2 publication Critical patent/WO2013025510A2/en
Publication of WO2013025510A3 publication Critical patent/WO2013025510A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/14—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only
    • B60G11/16—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/021—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a coil spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/144—Independent suspensions with lateral arms with two lateral arms forming a parallelogram
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/12—Wound spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/421—Pivoted lever mechanisms for mounting suspension elements, e.g. Watt linkage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/22—Spring constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Springs (AREA)

Abstract

A variable suspension mechanism (102) includes an arrangement of two springs (121 and 122), a lever (130) having a receiving location (134) for receiving an external force, and a pivot element (140) slideably coupled to the lever. The variable suspension mechanism includes an actuator (150) for relocating the pivot element causes a fulcrum (136) of the lever to relocate. An effective stiffness of the variable suspension mechanism relative to the external force applied at the receiving location is a rational function that depends on at least spring constants of the two springs and a location of the pivot element relative to the two springs. A suspension system (100) includes the variable suspension mechanism coupled to a conventional spring (106) in a series arrangement.
PCT/US2012/050355 2011-08-15 2012-08-10 Variable stiffness mechanism WO2013025510A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161523624P 2011-08-15 2011-08-15
US61/523,624 2011-08-15

Publications (2)

Publication Number Publication Date
WO2013025510A2 WO2013025510A2 (en) 2013-02-21
WO2013025510A3 true WO2013025510A3 (en) 2013-05-10

Family

ID=47715647

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/050355 WO2013025510A2 (en) 2011-08-15 2012-08-10 Variable stiffness mechanism

Country Status (1)

Country Link
WO (1) WO2013025510A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106183680A (en) * 2015-05-28 2016-12-07 通用汽车环球科技运作有限责任公司 Actively dynamic trimming includes the method and apparatus hanging damping of negative stiffness

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104421363B (en) * 2013-09-03 2016-08-17 广州汽车集团股份有限公司 Automotive suspension screw spring method for designing
CN112115547B (en) * 2020-09-09 2022-08-16 天津航天机电设备研究所 Suspension type gravity compensation lifting point position determination method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848789A (en) * 1987-04-07 1989-07-18 Technology Investments Limited Vehicle chassis tranverse structural member
JP2004106654A (en) * 2002-09-17 2004-04-08 Isuzu Motors Ltd Stabilizer device
US6948707B2 (en) * 2003-12-09 2005-09-27 The Timken Company Stabilizer bar having variable torsional stiffness
US20080191441A1 (en) * 2005-05-28 2008-08-14 Adrian Michael Griffiths Interlinked Double Wishbone Suspension
US7984915B2 (en) * 2009-05-12 2011-07-26 Honda Motor Co., Ltd. Rear suspension with semi-active toe force compliance control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848789A (en) * 1987-04-07 1989-07-18 Technology Investments Limited Vehicle chassis tranverse structural member
JP2004106654A (en) * 2002-09-17 2004-04-08 Isuzu Motors Ltd Stabilizer device
US6948707B2 (en) * 2003-12-09 2005-09-27 The Timken Company Stabilizer bar having variable torsional stiffness
US20080191441A1 (en) * 2005-05-28 2008-08-14 Adrian Michael Griffiths Interlinked Double Wishbone Suspension
US7984915B2 (en) * 2009-05-12 2011-07-26 Honda Motor Co., Ltd. Rear suspension with semi-active toe force compliance control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106183680A (en) * 2015-05-28 2016-12-07 通用汽车环球科技运作有限责任公司 Actively dynamic trimming includes the method and apparatus hanging damping of negative stiffness

Also Published As

Publication number Publication date
WO2013025510A2 (en) 2013-02-21

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