IES84932Y1 - Independent suspension system - Google Patents
Independent suspension systemInfo
- Publication number
- IES84932Y1 IES84932Y1 IE2006/0267A IE20060267A IES84932Y1 IE S84932 Y1 IES84932 Y1 IE S84932Y1 IE 2006/0267 A IE2006/0267 A IE 2006/0267A IE 20060267 A IE20060267 A IE 20060267A IE S84932 Y1 IES84932 Y1 IE S84932Y1
- Authority
- IE
- Ireland
- Prior art keywords
- side frame
- suspension system
- members
- independent suspension
- independent
- Prior art date
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 31
- 238000005266 casting Methods 0.000 claims description 4
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 3
- 210000001503 Joints Anatomy 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 1
Classifications
-
- 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
- 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
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/02—Attaching arms to sprung part of vehicle
Abstract
ABSTRACT This invention relates to an independent suspension system. The invention is particularly concerned with independent front suspension systems for heavy road vehicles.
Description
Independent Suspension System
Introduction
This invention relates to an independent suspension system.
The invention is particularly concerned with independent front suspension systems for
heavy road vehicles.
The present invention is directed towards providing an improved independent
suspension system for such vehicles.
According to the invention there is provided an independent suspension system for
mounting on a vehicle chassis which includes a pair of spaced-apart longitudinal
chassis rails, the suspension system including:
a U-shaped support frame for attachment to the vehicle chassis rails;
said support frame having a pair of spaced-apart side frame members, each
having an upper end and a lower end;
an upper end of each side frame member being adapted for engagement with
and attachment to a chassis rail of the vehicle;
the lower ends of the side frame members being interconnected by at least one
cross member which extends therebetween;
said cross member being demountably secured to each side frame member;
an independent wheel suspension assembly being mounted on each side
frame member.
In a preferred embodiment, a pair of spaced-apart cross members are demountably
secured between the side frame members. These are preferably located at a front
end and at a rear end of the side frame members.
In another embodiment each cross member is bolted to each of the side frame
members. Thus advantageously each cross member may be removed if required for
access to, for example, an engine located within the mounting frame for maintenance
and the like.
In a preferred embodiment each cross member comprises a high strength
austempered ductile iron (ADI) casting.
In another embodiment each cross member has an elongate body with flanged ends
having through-holes for reception of mounting bolts.
In a further embodiment each wheel suspension assembly comprises an upper
control arm and an associated lower control arm, said control arms having inner ends
pivotally mounted on the side frame member and outer ends pivotally attached to a
wheel hub, a spring and damper assembly being mounted between one of the control
arms, preferably the lower control arm, and the side frame member.
In another embodiment an outer end of each control arm is attached by a ball joint to
the wheel hub.
In another aspect the invention provides a U-shaped support frame for a suspension
system, the support frame having a pair of spaced-apart side frame members each
having an upper end and a lower end, an upper end of each side frame member
being adapted for engagement with an attachment to a vehicle chassis, the lower
ends of the side frame members being interconnected by at least one cross member
which extends therebetween, said cross member being demountably secured to each
side frame member, and means for mounting a wheel suspension assembly on each
side frame member.
Detailed Description of the invention
The invention will be more clearly understood by the following description of some
embodiments thereof, given by way of example only, with reference to the
accompanying drawings, in which:
Fig. 1 is a perspective view of an independent suspension system of the
invention shown mounted on vehicle chassis rails;
Fig. 2 is an elevational view of the independent suspension system;
Fig. 3 is another perspective view of the independent suspension system;
Fig. 4 is a further perspective view of the independent suspension system;
Fig. 5 is a detail perspective view showing portion of an independent wheel
suspension assembly of the system;
Fig. 6 is an elevatlonal view of portion of the independent wheel suspension
assembly; and
Fig. 7 is an end elevational view of portion of the independent wheel
suspension assembly.
Referring to the drawings, there is illustrated a modular independent suspension
system according to the invention indicated generally by the reference numeral 1.
The system 1 has a U—shaped support frame indicated generally by the reference
numeral 2 for attachment to a pair of spaced-apart longitudinal chassis rails 3, 4 on
a vehicle, as shown in Fig. 1. The support frame 2 includes a pair of spaced-apart
side frame members 6, 7 interconnected at their lower ends by a pair of
demountable cross members 8. An independent wheel suspension assembly 9 is
mounted on each side frame member 6, 7.
Each side frame member 6, 7 has a stepped upper end 10 for engagement with an
attachment to a chassis rail 3, 4 to which they are bolted as shown in Fig. 1. The
lower ends 11 of the side frame members 6, 7 are interconnected by the pair of
spaced-apart cross members 8. These cross members 8, as can be seen in Fig. 3,
are positioned at a front end and at a rear end of the side frame members 6, 7 thus
forming a rigid support frame 2.
Each cross member 8 comprises a high strength austempered ductile iron casting.
The cross member 8 has an elongate cylindrical body 14 with flanged ends 15.
These flanges 15 are substantially perpendicular to the central axis of the body 14
and have through-holes for reception of mounting bolts 16 by means of which the
cross members 8 are demountably secured to the side members 6, 7. This
conveniently allows removal of the cross members 8 if required for maintenance
purposes.
Each wheel suspension assembly 9 comprises an upper control arm 20 and an
associated lower control arm 21. Inner ends of the control arms 20, 21 are pivotally
mounted on the side frame member 6, 7 so that the control arms 20, 21 can pivot
up and down on the side frame member 6, 7. An outer end of each control arm 20,
21 is pivotally mounted by a ball joint 22, 23 to a wheel hub 25. King pins 26 of the
ball joints are inclined at 10° to the vertical as shown in Fig‘ 6. Also as can be seen
in Fig. 7 a positive caster offset of approximately 30 mm has been incorporated
which aids the self-centering tendency of the design. An integrated steering arm
28 is provided on the wheel hub 25, being integrally cast with the inner knuckle
casting part of the wheel hub 25 assembly.
A coil spring 32 with an associated damper 33 housed within the coil spring 32 is
mounted between a pivot mount 34 on the lower control arm 21 and an upper end
of the side member 6, 7.
The invention is not limited to the embodiments hereinbefore described which may
be varied in both construction and detail
Claims (5)
1. An independent suspension system for mounting on a vehicle chassis which includes a pair of spaced-apart longitudinal chassis rails, the suspension system including: a U-shaped support frame for attachment to the vehicle chassis rails; said support frame having a pair of spaced—apart side frame members, each having an upper end and a lower end; an upper end of each side frame member being adapted for engagement with and attachment to a chassis rail of the vehicle; the lower ends of the side frame members being interconnected by a pair of spaced-apart cross members which extend therebetween; each cross member being demountably secured to each side frame member; an independent wheel suspension assembly being mounted on each side frame member.
2. The independent suspension system as claimed in claim 1 wherein each cross member has an elongate cylindrical body with flanged ends having through- holes for reception of mounting bolts by means of which the cross members are demountably secured to the side members; and each cross member comprises a high strength austempered ductile iron (ADI) casting.
3. The independent suspension system as claimed in claim 1 or claim 2 wherein each wheel suspension assembly comprises an upper control arm and an associated lower control arm, said control arms having inner ends pivotally mounted on the side frame member and outer ends pivotally attached to a wheel hub, an outer end of each control arm being connected by a ball joint to the wheel hub, said ball joints having kingpins which are inclined to the vertical, and the kingpins of the ball joints are located on the wheel hub to provide a positive caster off-set.
4. An independent suspension system substantially as hereinbefore described with reference to the accompanying drawings.
5. A vehicle incorporating the independent suspension system as claimed in any preceding claim.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IES84932Y1 true IES84932Y1 (en) | 2008-07-23 |
Family
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