GB2410929A - Vehicle suspension systems - Google Patents

Vehicle suspension systems Download PDF

Info

Publication number
GB2410929A
GB2410929A GB0501908A GB0501908A GB2410929A GB 2410929 A GB2410929 A GB 2410929A GB 0501908 A GB0501908 A GB 0501908A GB 0501908 A GB0501908 A GB 0501908A GB 2410929 A GB2410929 A GB 2410929A
Authority
GB
United Kingdom
Prior art keywords
suspension system
vehicle
vehicle suspension
force
chassis
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0501908A
Other versions
GB0501908D0 (en
GB2410929B (en
Inventor
Valerian John Dare-Bryan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HMT Vehicles Ltd
Original Assignee
HMT Vehicles Ltd
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 HMT Vehicles Ltd filed Critical HMT Vehicles Ltd
Publication of GB0501908D0 publication Critical patent/GB0501908D0/en
Publication of GB2410929A publication Critical patent/GB2410929A/en
Priority to US11/363,633 priority Critical patent/US7500687B2/en
Application granted granted Critical
Publication of GB2410929B publication Critical patent/GB2410929B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/28—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs 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
    • 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
    • B60G2202/20—Type of damper
    • B60G2202/21—Type of damper with two dampers per wheel, arranged before and after the wheel axis
    • 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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/126—Mounting of pneumatic springs
    • 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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/13—Mounting of springs or dampers with the spring, i.e. coil spring, or damper horizontally mounted
    • B60G2204/1302—Mounting of springs or dampers with the spring, i.e. coil spring, or damper horizontally mounted inside the vehicle frame

Abstract

A vehicle suspension system includes an airbag (10) arranged to act substantially horizontally so as to apply a substantially horizontal force to a horizontally movable force-transmitting member (12) and a parallelogram linkage (16, 17, 18, 19) that acts between the force-transmitting member (12) and a part (14) of the vehicle chassis (10).

Description

VEHICLE SUSPENSION Sy,STEMS
Field of the Invention
This invention relates to vehicle suspension systems.
Vehicle suspension systems are known that include a vertically acting air bag.
However, the use of a vertically acting air bag imposes space and design restraints on the suspension system and it is accordingly an object of the present invention to provide a vehicle suspension system that includes the use of an air bag that acts substantially horizontally.
Summarv of the Invention According to the present invention there is provided a vehicle suspension system that includes an airbag arranged to act substantially horizontally so as to apply a substantially horizontal force to a horizontally movable force-transmitting member and a parallelogram linkage that acts between the force-transmitting member and a part of the vehicle chassis.
The parallelogram linkage preferably includes a rocker pivotally connected at its one end to said part of the vehicle chassis for pivotal movement relative thereto about a substantially horizontal pivot axis and pivotally connected at its other end to the force-transmitting member or to a component fixed to the force- transmitting member.
A push rod is preferably connected at its one end to the rocker at a position intermediate the ends of the rocker, the push rod being connected at its other end to a wheel hub support member suspended from the vehicle chassis by suspension links.
This arrangement provides for optimum vertical wheel displacement and variable ride height ability.
Two airbags are preferably mounted on the chassis so as to act transversely of the axis of the vehicle chassis, the airbags being disposed in a substantially back-to-back manner. This provides a balanced arrangement and avoids the application of torsional twisting loads to the chassis.
Brief Description of the Drawings
Figure 1 is a schematic side view of the vehicle suspension system, Figure 2 is a front view of a first form of suspension system mounted on the chassis of a vehicle having a hub assembly drive system, Figure 3 is a plan view of the chassis, suspension system and drive system shown in Figure 2, Figure 4 is a side view corresponding to Figure 2 but showing a wheel mounted on the hub assembly, and Figure 5 is a plan view corresponding to Figure 3 but showing a wheel mounted on the hub assembly.
Descrintion of the Preferred Embodiment As can be seen from the drawings, the suspension system includes an air bag 10 mounted on the vehicle chassis 11 and arranged to act horizontally so as to apply a resilient force to an air bag mounting plate 12 that carries a pivot mounting 13. A part 14 of the chassis 11 carries a mounting 15 for a main pivot for one arm of a rocker 16. The other arm of the rocker 16 is attached to pivot mounting 13. The air bag 10 extends transversely to the centre line or axis of the vehicle chassis 11 and acts outwardly of the centre line of the chassis 11.
The rocker 16 forms part of a parallelogram linkage system that also includes a first link 17, a second link 18 and a third link 19. One end of the first link 17 is connected to the mounting 15 and the other end of the first link 17 is connected to one end of the second link 18. The other end of the second link 18 is connected to one end of the third link 19 and the other end of the third link 19 is connected, in turn, to the pivot mounting 13.
The action of the parallelogram linkage system 16,17,18, 19 is such that, as the air bag mounting plate 12 moves horizontally, as indicated by the arrow 20 in Figure 1, tilting movement of the air bag mounting plate 12 is prevented and the action of the air bag is maintained horizontally.
The rocker 16 carries a pivot mounting 21 for a push rod 22 that is connected to a mounting 23 for a road wheel hub 24, and the mounting 23 is supported by suspension links 25 connected to the chassis 10. As shown in the drawings, a shock absorber 27 acts between the lower suspension link 25 and the chassis 11.
The parallelogram linkage system 16, 17, 18, 19 connecting the chassis mounting 15 and the pivot mounting 13 carried by the air bag mounting plate 12 permits substantial, controlled vertical displacement of the road wheel hub 24 and the mounting 23 and provides for variable ride height.
Figures 4 and 5 show a wheel 26 mounted on the road wheel hub 24. The wheel 26 has not been shown in Figures 2 and 3 in order to enable details of the wheel hub 24 and the mounting 23 to be seen.
The drawings show the suspension system for a single wheel 26 of the vehicle and it will be appreciated that there will be another suspension system of mirror image form on the other side of the vehicle. This arrangement will then be repeated for each pair of wheels 26 of the vehicle.
Two airbags 10 will thus be mounted on the chassis 11 so as to act transversely of the axis of the vehicle chassis 11 and will be disposed in a substantially back-to-back manner. This provides a balanced arrangement and avoids the application of torsional twisting loads to the chassis 11.

Claims (7)

  1. Claims: 1. A vehicle suspension system that includes an airbag arranged to
    act substantially horizontally so as to apply a substantially horizontal force to a horizontally movable force- transmitting member and a parallelogram linkage that acts between the force-transmitting member and a part of the vehicle chassis.
  2. 2. A vehicle suspension system as claimed in Claim 1, in which the parallelogram linkage includes a rocker pivotally connected at its one end to said part of the vehicle chassis for pivotal movement relative thereto about a substantially horizontal pivot axis.
  3. 3. A vehicle suspension system as claimed in Claim 2, in which the rocker is pivotally connected at its other end to the force- transmitting member or to a component fixed to the force- transmitting member.
  4. 4. A vehicle suspension system as claimed in Claim 2 or Claim 3, in which a push rod is connected at its one end to the rocker at a position intermediate the ends of the rocker.
  5. 5. A vehicle suspension system as claimed in Claim 4, in which the push rod is connected at its other end to a wheel hub support member suspended from the vehicle chassis by suspension links.
  6. 6. A vehicle suspension system as claimed in any one of the preceding claims, in which the airbag acts transversely of the centreline of the chassis.
  7. 7. A vehicle having a suspension system as claimed in any one of the preceding claims.
    7. A vehicle suspension system as claimed in Claim 6, which includes two airbags disposed back-to-back.
    8. A vehicle suspension system substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB0501908A 2004-01-31 2005-01-31 Vehicle suspension systems Expired - Fee Related GB2410929B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/363,633 US7500687B2 (en) 2004-01-31 2006-02-28 Vehicle suspension systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0402200A GB0402200D0 (en) 2004-01-31 2004-01-31 Vehicle suspension systems

Publications (3)

Publication Number Publication Date
GB0501908D0 GB0501908D0 (en) 2005-03-09
GB2410929A true GB2410929A (en) 2005-08-17
GB2410929B GB2410929B (en) 2006-03-01

Family

ID=31971849

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0402200A Ceased GB0402200D0 (en) 2004-01-31 2004-01-31 Vehicle suspension systems
GB0501908A Expired - Fee Related GB2410929B (en) 2004-01-31 2005-01-31 Vehicle suspension systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0402200A Ceased GB0402200D0 (en) 2004-01-31 2004-01-31 Vehicle suspension systems

Country Status (1)

Country Link
GB (2) GB0402200D0 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236287A (en) * 1989-09-19 1991-04-03 Paccar Inc Independent front suspension apparatus
US5505481A (en) * 1994-03-07 1996-04-09 Suspensions Incorporated Lift axle suspension system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236287A (en) * 1989-09-19 1991-04-03 Paccar Inc Independent front suspension apparatus
US5505481A (en) * 1994-03-07 1996-04-09 Suspensions Incorporated Lift axle suspension system

Also Published As

Publication number Publication date
GB0501908D0 (en) 2005-03-09
GB2410929B (en) 2006-03-01
GB0402200D0 (en) 2004-03-03

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120131