AU657128B2 - An improved trailer suspension with camber and/or toe-in adjustment - Google Patents

An improved trailer suspension with camber and/or toe-in adjustment Download PDF

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Publication number
AU657128B2
AU657128B2 AU16089/92A AU1608992A AU657128B2 AU 657128 B2 AU657128 B2 AU 657128B2 AU 16089/92 A AU16089/92 A AU 16089/92A AU 1608992 A AU1608992 A AU 1608992A AU 657128 B2 AU657128 B2 AU 657128B2
Authority
AU
Australia
Prior art keywords
shackle
toe
suspension
camber
adjustment
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.)
Ceased
Application number
AU16089/92A
Other versions
AU1608992A (en
Inventor
Neville John Withers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU16089/92A priority Critical patent/AU657128B2/en
Publication of AU1608992A publication Critical patent/AU1608992A/en
Application granted granted Critical
Publication of AU657128B2 publication Critical patent/AU657128B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B60G3/02—Resilient suspensions for a single wheel with a single pivoted arm
    • B60G3/12—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially parallel to the longitudinal axis of the vehicle
    • B60G3/14—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially parallel to the longitudinal axis of the vehicle the arm being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/13—Independent suspensions with longitudinal arms only
    • B60G2200/132—Independent suspensions with longitudinal arms only with a single trailing arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/46—Indexing codes relating to the wheels in the suspensions camber angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/462—Toe-in/out
    • B60G2200/4622—Alignment adjustment
    • 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
    • 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
    • B60G2204/124—Mounting of coil 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
    • B60G2204/124—Mounting of coil springs
    • B60G2204/1244—Mounting of coil springs on a suspension arm
    • 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
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
    • 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
    • B60G2204/42—Joints with cam surfaces
    • 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
    • B60G2204/43—Fittings, brackets or knuckles
    • B60G2204/4302—Fittings, brackets or knuckles for fixing suspension arm on the vehicle body or chassis
    • 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
    • B60G2204/44—Centering or positioning means
    • B60G2204/4402—Spacers or shims
    • 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
    • B60G2204/61—Adjustable during maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/10—Constructional features of arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/10—Constructional features of arms
    • B60G2206/124—Constructional features of arms the arm having triangular or Y-shape, e.g. wishbone

Landscapes

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

Description

P/00/01i1 2815101 Regulation 3.2(2)
AUSTRALIA
Patents Act 1990 71
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT S S S
*SC'SSS
Application IN Invention Ti' Jumber: PIK 6015 Lodged: 8 May, 1991.
tie: AN IMPROVED TRAILER SUSP1RENSION WITH CAMBER AND/OR TOE-IN ADJUSTMENT S S The following statement is a full description of this invention, including the best method of performing it known to me AN IMPROVED TRAILER SUSPENSION WITH CAMBER AND/OR TOE-IN ADJUSTMENT This invention relates to the provision of camber and/or toe-in adjustment on trailing arm wishbone type suspensions, as used in trailers, caravans and boat trailer applications. A major problem with all trailer suspensions including wishbone type suspensions is the lack of any iieans of adjusting toe-in and camber after the suspension has been fitted and fixed to the trailer chassis.
The present invention sets out to provide a simple means of achieving adjustment of camber and toe-in on wishbone type suspensions.
Wishbone type suspensions for use with trailers, caravans etc., are known and have the advantage of using a coil spring which can be conveniently used in conjunction with a concentrically mounted piston type shock absorber of well-known type.
1 5 The wishbone suspension of this type has a pair of inverted U-shaped members fixedly secured to the underneath of a trailer chassis to form a shackle support and adapted to receive shackle bolts and bushes rotatably mounted in the shackle support for pivotably supporting a wishbone type member, the wishbone member including a stub wheel axle secured to the other end at the ;o 20 bottom of the U-shaped members for supporting the trailer on a wheel at each side of the trailer hereinafter referred to as a wishbone type suspension of the So: type hereinbefore described.
Preferably a spring support is mounted adjacent to the axle for resilient support of the chassis.
It will be appreciated that dual wheels or a pair of such suspension assemblies can be mounted upon each side of the trailer of larger/heavier construction.
There is provided according to the present invention a wishbone type suspension of the type hereinbefore described including shackle supports and shackle bolts supported for movement re. -ve to one another to allow adjustment of toe-in and/or camber of a wheel mounted on said stub axle wherein the bolts are slidable at least in slots in the shackle supports and are 4mounted upon square spacers acting as bearing members between the bolts and the slots.
In this specific arrangement, "toe-in" means adjustment of the wheel angle relative to the trailer chassis along a vertical axis and .amber" is adjustment of the whee! angle relative to the trailer chassis taken along a horizontal axis extending substantially fore and aft of the trailer.
In a specific aspect of the invention, the shackle supports are of channel configuration and are welded to the main chassis along the base of the supports and each shackle support web has an oblong siot machined therein.
The slot is horizontal in one shackle support and vertical in the other shackle support with the shackle bolts being carried on the spacers such that the bolts are slidable back and forth on the spacers upon rotation of an eccentric washer mounted on the bolt, the washer being contained at both ends by raised abutments on the shackle support webs.
15 The shackle bolt is fixed to rotate with the eccentric washer in such a way for example, by welding or in a recessed slot in the wasilers such that when ooo..i the head of the shackle bolt is rotated, it forces the shackle bolts to slide in its containment in a single plane that is horizontally or vertically depending upon the plane in which the slot in the hanger carrying the square spacer is machined.
S 20 The invention will now be described in greater detail having reference to the accompanying figure.
The suspension hanger system comprises a shackle bolt 10 and associated nut 11 with two outer eccentric spacers 12 positioned on either side of the hangers 13, 14.
The shackle supports 13, 14 are preferably of inverted U-shape with oblong slotted holes 15, 16 carrying square spacers 20 that are slideable forwardly or backwardly in a horizontally slot 15 or vertically in a vertical slot 16 in support 14.
The shackle bush (not shown) and bolts are supported on the supports 13 and 14 and comprise a pair of concentric washers 17 to apply a clamping force at the support flanges enabling the eccentric spacers 12 to be locked in any desired setting. It will be appreciated that the suspension arm can 4 be manufactured in a mirror image for suspension on the right or left hand of the trailer.
The operation of the suspension will now be described as follows: The outer arm 18 of the wishbone suspension member is connected to the shackle support 13 with its horizontal slot 15 ccitrolling the toe-in and the inner arm 19 of the suspension member has a vertical slot 16 which is arranged to control camber.
The outer arm 18 of the wishbone suspension member is connected to the shadcle support 13 with its horizontal slot 15 allowing with use of the eccentric washer 12 and sliding square spacer 20 adjustment of the toe-in whilct the inner arm member with its vertical slot 16 allowing for camber adjustment to be controlled by movement of the square spacer 20 in the vertical slot.
S.A slight centre line alignment of variation between the arms of the wishbone suspension members is absorbed by the use of the shackle bushes 1 5 which have resilient rubber sections.
The arms 18, 19 terminate in a mounting for stub axle 21 and spring .:oeoi socket 22 for supporting a coil spring 23 and optionally a piston type shock absorber (not shown) concentrically mounted in the coil spring.
If:J
S
SS
*SSS

Claims (3)

1. A wishbone type suspension of the type hereinbefore described wherein the shackle members and shackle bolts are supported for movement relative to one another to allow adjustment of toe-in and/or camber of a wheel mounted on the stub axle of the suspension system.
2. A suspension as claimed in claim 1 wherein the shackle assembly includes a bolt and an associated slot in the shackle support said slot including a slideable member movable relative to said shackle support for adjustment of toe-in or camber as applicable.
3. A wishbone type suspension substantially as hereinbefore described having °I reference to the accompanying drawing. DATED this 27th day of April, 1992. NEVILLE JOHN WITHERS *0*C *0 WATERMARK PATENT TRADEMARK ATTORNEYS THE ATRIUM S290 BURWOOD ROAD HAWTHORN VICTORIA 3122 AUSTRAUA LJD:JL VAX doc014 AUOOOPK6015.WPC
AU16089/92A 1991-05-08 1992-05-07 An improved trailer suspension with camber and/or toe-in adjustment Ceased AU657128B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16089/92A AU657128B2 (en) 1991-05-08 1992-05-07 An improved trailer suspension with camber and/or toe-in adjustment

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPK601591 1991-05-08
AUPK6015 1991-05-08
AU16089/92A AU657128B2 (en) 1991-05-08 1992-05-07 An improved trailer suspension with camber and/or toe-in adjustment

Publications (2)

Publication Number Publication Date
AU1608992A AU1608992A (en) 1992-11-12
AU657128B2 true AU657128B2 (en) 1995-03-02

Family

ID=25616221

Family Applications (1)

Application Number Title Priority Date Filing Date
AU16089/92A Ceased AU657128B2 (en) 1991-05-08 1992-05-07 An improved trailer suspension with camber and/or toe-in adjustment

Country Status (1)

Country Link
AU (1) AU657128B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005073055A1 (en) * 2004-01-16 2005-08-11 Hendrickson International Corporation Device for leveling a trailer floor
FR2981885A1 (en) * 2011-10-27 2013-05-03 Peugeot Citroen Automobiles Sa Suspension arm for rear wheel-axle unit of car, has saddle comprising large continuous flange on circumference for surrounding spring, where depth of saddle allows receiving spring of suspension when saddle is compressed with block
IT202100019331A1 (en) * 2021-07-21 2023-01-21 A Agrati S P A Camber angle adjuster for a car suspension

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255921A2 (en) * 1986-08-04 1988-02-17 Specialty Products Inc. Camber adjustment
EP0306046A2 (en) * 1987-09-03 1989-03-08 Nissan Motor Co., Ltd. Wheel alignment adjusting mechanism
AU3476989A (en) * 1988-05-18 1989-11-23 Merban Pty. Ltd. Wheel alignment mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255921A2 (en) * 1986-08-04 1988-02-17 Specialty Products Inc. Camber adjustment
EP0306046A2 (en) * 1987-09-03 1989-03-08 Nissan Motor Co., Ltd. Wheel alignment adjusting mechanism
AU3476989A (en) * 1988-05-18 1989-11-23 Merban Pty. Ltd. Wheel alignment mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005073055A1 (en) * 2004-01-16 2005-08-11 Hendrickson International Corporation Device for leveling a trailer floor
FR2981885A1 (en) * 2011-10-27 2013-05-03 Peugeot Citroen Automobiles Sa Suspension arm for rear wheel-axle unit of car, has saddle comprising large continuous flange on circumference for surrounding spring, where depth of saddle allows receiving spring of suspension when saddle is compressed with block
IT202100019331A1 (en) * 2021-07-21 2023-01-21 A Agrati S P A Camber angle adjuster for a car suspension
WO2023002357A1 (en) * 2021-07-21 2023-01-26 A. Agrati S.P.A. An adjusting device for adjusting the camber angle for a suspension of a motor vehicle

Also Published As

Publication number Publication date
AU1608992A (en) 1992-11-12

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