WO1990006454A1 - Ensemble a ressort a lames en materiau composite - Google Patents

Ensemble a ressort a lames en materiau composite Download PDF

Info

Publication number
WO1990006454A1
WO1990006454A1 PCT/GB1989/001413 GB8901413W WO9006454A1 WO 1990006454 A1 WO1990006454 A1 WO 1990006454A1 GB 8901413 W GB8901413 W GB 8901413W WO 9006454 A1 WO9006454 A1 WO 9006454A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
recess
end portion
assembly
side walls
Prior art date
Application number
PCT/GB1989/001413
Other languages
English (en)
Inventor
Bruce Nicholas Jones
Original Assignee
Gkn Technology Limited
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 Gkn Technology Limited filed Critical Gkn Technology Limited
Publication of WO1990006454A1 publication Critical patent/WO1990006454A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/366—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers made of fibre-reinforced plastics, i.e. characterised by their special construction from such materials
    • F16F1/368—Leaf springs
    • F16F1/3683—Attachments or mountings therefor
    • F16F1/3686—End mountings

Definitions

  • This invention relates generally to leaf springs made of composite (fibre reinforced plastics) material, and more particularly it relates to the provision of means whereby a force transmitting connection is established with such a spring for use in, for example, a vehicle suspension.
  • a leaf spring made from a composite material, having an end fitting which comprises an attachment member lying in a recess defined by the spring, the attachment member being held in the recess by a clamping member.
  • This end fitting is designed for a leaf spring for use ih vehicle suspension in which the spring fulfils the function of determining the path of wheel travel relative to a vehicle structure as well as providing springing, and therefore the end fitting is designed to withstand forces occurring in all directions between the spring and the component to which it is attached.
  • An important feature of the end fitting is that the attachment member, in the form of a tubular bush to receive a bolt, lies in the recess at the spring end portion. For some applications, however, this end fitting is not convenient. Further, not all spring applications require an end fitting which is able to transmit forces in all directions as in the fitting disclosed in EP 0070122.
  • a leaf spring of composite material having a spring end portion defining a recess extending across the width of the spring and facing in a direction transverse to the length of the spring, and a surface facing in the opposite direction to said recess; and a force transmitting assembly comprising a member lying in said recess, a member bearing on said oppositely facing surface of the spring adjacent said end portion thereof and means disposed beyond the end of the spring for connection to another component, said oppositely facing surface of said end portion of the spring not being engaged by said assembly.
  • a retaining member may be provided to engage the surface of the spring adjacent and facing in the same direction as the recess therein.
  • the force transmitting assembly comprises an element generally of U-section with a base wall and two side walls extending therefrom, said base wall of the element affording said member bearing on said oppositely facing surface of the spring adjacent said end portion thereof and being spaced from said oppositely facing surface of said end portion, said member lying in said recess extending between said side walls and said side walls extending beyond the end of the spring to provide for said connection to another component.
  • the force transmitting assembly of the invention effectively transmits force in the particular direction above referred to. This effectiveness is not decreased if, for example, production tolerances mean that mass produced springs have slightly different thicknesses from one another, individual manufacture of force transmitting assemblies is not necessary to suit such slightly different springs.
  • the assembly When fitted to a particular spring, the assembly will assume an orientation such that it firmly engages the recess and the oppositely facing surface of the spring adjacent its end portion.
  • the side walls of the U-section element converge beyond the end of the spring, so that the assembly occupies the smallest possible volume and is therefore more readily accommodated in, for example, a vehicle suspension.
  • a leaf spring having a force transmitting assembly according to the invention may be used, for example, in a vehicle suspension where a path of wheel movement is determined by means, e.g. an appropriate linkage, other than the spring, and the spring is merely required to exert a springing force on a suspension component.
  • load-spreading elements e.g. of elastomeric material, may if required be interposed between one or more of the members of the force transmitting assembly and the spring.
  • Figure 1 is a diagrammatic elevation of a spring assembly according to the invention
  • Figure 2 is a section on the line 2-2 of Figure 1.
  • Figure 3 shows diagrammatically the use of a spring assembly according to the invention in a vehicle suspension.
  • FIG. 1 part of a leaf spring made of composite, fibre-reinforced plastics, material is indicated at 10, and the spring has an end portion 11 which defines a part circular recess 12 extending across the width of the spring.
  • This shape of spring end portion is substantially the same as is shown in our European Patent 0070122 aforesaid.
  • the recess faces in the direction, transverse to the length of the spring, in which the spring is to exert its force in use.
  • a tubular member 14 extends transversely of the pressing between opposed side walls thereof, and engages the recess 12.
  • the base wall 13A of the pressing is spaced from the surface of the spring facing in the opposite direction to the recess 12.
  • the load spreading element is not essential to the present invention.
  • the side walls of the pressing 13 afford aligned apertures 16 to receive a bolt or pin for force transmitting connection to another component, e.g. a vehicle suspension component.
  • the side walls 13B of the pressing converge towards one another so that the connection to another component such as a vehicle suspension component occupies minimum space.
  • FIG. 3 of the drawings shows diagrammatically how a spring assembly according to the invention would be used in a vehicle suspension.
  • reference 30 designates a suspension member which at its one end 32 is pivo ally secured to an appropriate part of the chassis structure of a vehicle and at its other end carries a wheel 31.
  • a spring as above described in detail is indicated in outline at 10, mounted to the vehicle chassis structure by a mounting 34.
  • the force transmitting assembly at the end of the spring is piv ⁇ tally connected to a link 33 which in turn is pivotally connected to the member 30.
  • the spring takes no part in determining the path of the wheel movement relative to the chassis structure of the vehicle, this being determined by the member 30 alone or in combination with other links or suspension members not shown.
  • Link 33 transmits only a force to the spring in the direction generally transverse to the length of the spring.

Landscapes

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

Abstract

Un ressort à lames (10) en matériau composite doté d'une partie terminale (11) définissant un évidement, comporte une connexion de transmission de force avec un autre constituant par l'intermédiaire d'un ensemble comprenant un élément (14) se situant dans l'évidement, ainsi qu'un élément (13) exerçant une pression contre la surface d'un ressort adjacent à la partie terminale, et tourné dans le sens opposé à l'évidement.
PCT/GB1989/001413 1988-11-25 1989-11-24 Ensemble a ressort a lames en materiau composite WO1990006454A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888827609A GB8827609D0 (en) 1988-11-25 1988-11-25 Assembly including leaf spring of composite material
GB8827609.2 1988-11-25

Publications (1)

Publication Number Publication Date
WO1990006454A1 true WO1990006454A1 (fr) 1990-06-14

Family

ID=10647490

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/001413 WO1990006454A1 (fr) 1988-11-25 1989-11-24 Ensemble a ressort a lames en materiau composite

Country Status (2)

Country Link
GB (2) GB8827609D0 (fr)
WO (1) WO1990006454A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267751A (en) * 1991-04-05 1993-12-07 Nhk Spring Co., Ltd. Suspension system for a vehicle
DE102011055625A1 (de) * 2011-11-23 2013-05-23 Benteler Automobiltechnik Gmbh Kraftfahrzeugachse sowie Verfahren zur Herstellung einer Querblattfeder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018206028A1 (de) 2018-04-19 2019-10-24 Volkswagen Aktiengesellschaft Blattfederanbindung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE462699C (de) * 1928-07-17 Oesterreichische Daimler Motor Abfederung der pendelnden Halbachsen von Kraftfahrzeugen
US3345060A (en) * 1965-10-23 1967-10-03 Gen Motors Corp Leaf spring assembly
GB1129735A (en) * 1966-05-02 1968-10-09 Gen Motors Corp Leaf spring assemblies
EP0070122A1 (fr) * 1981-07-15 1983-01-19 Gkn Technology Limited Ressorts à lame en matière composite
FR2586624A1 (fr) * 1985-09-02 1987-03-06 Ressorts Ind Dispositifs assurant le guidage et la suspension des trains (avant ou arriere) de vehicules
US4768807A (en) * 1987-06-25 1988-09-06 General Motors Corporation Wheel suspension

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8606266D0 (en) * 1986-03-13 1986-04-16 Gkn Technology Ltd Leaf springs of composite material
AU1899688A (en) * 1987-07-17 1989-01-19 International Bicycle Corporation Leaf spring and clamping means

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE462699C (de) * 1928-07-17 Oesterreichische Daimler Motor Abfederung der pendelnden Halbachsen von Kraftfahrzeugen
US3345060A (en) * 1965-10-23 1967-10-03 Gen Motors Corp Leaf spring assembly
GB1129735A (en) * 1966-05-02 1968-10-09 Gen Motors Corp Leaf spring assemblies
EP0070122A1 (fr) * 1981-07-15 1983-01-19 Gkn Technology Limited Ressorts à lame en matière composite
FR2586624A1 (fr) * 1985-09-02 1987-03-06 Ressorts Ind Dispositifs assurant le guidage et la suspension des trains (avant ou arriere) de vehicules
US4768807A (en) * 1987-06-25 1988-09-06 General Motors Corporation Wheel suspension

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267751A (en) * 1991-04-05 1993-12-07 Nhk Spring Co., Ltd. Suspension system for a vehicle
DE102011055625A1 (de) * 2011-11-23 2013-05-23 Benteler Automobiltechnik Gmbh Kraftfahrzeugachse sowie Verfahren zur Herstellung einer Querblattfeder
EP2596969A3 (fr) * 2011-11-23 2013-07-10 Benteler Automobiltechnik GmbH Essieu de véhicule automobile ainsi que procédé destiné à la fabrication d'un ressort à lames transversal

Also Published As

Publication number Publication date
GB8827609D0 (en) 1988-12-29
GB8926608D0 (en) 1990-01-17
GB2227807A (en) 1990-08-08

Similar Documents

Publication Publication Date Title
US5676356A (en) Flexible bolster
US5950971A (en) Assembly for and method of mounting a suspension member to an axle housing
US5271595A (en) Resilient support device having a non-linear elastic characteristic
KR910005043B1 (ko) 액슬 클램프
US7673891B2 (en) Suspension system shackle link with shock absorber
EP1237740B1 (fr) Bras de commande equipant un systeme de suspension de vehicule
EP0621145A1 (fr) Bride de fixation
US4750718A (en) Dual rate leaf spring construction
CA2512848A1 (fr) Systeme de suspension leger comprenant moins de pieces, pour vehicules a roues
EP0834408A1 (fr) Système d'isolateur de suspension
US4763885A (en) Planar spring
CA1045984A (fr) Montage d'essieu pour servodirection
WO1990006454A1 (fr) Ensemble a ressort a lames en materiau composite
JP2811569B2 (ja) 板ばねおよび板ばね組立体
EP0058950A2 (fr) Dispositif de suspension de roue indépendante pour véhicule moteur
US5037125A (en) Fully articulated suspension of tandem axles of a vehicle
US5560590A (en) Friction control suspension assembly and friction control device for vehicles
WO1986002886A1 (fr) Montages pour ressorts
AU570588B2 (en) Assemblies of springs of composite material
US5860637A (en) Energy absorbing assembly
US4775166A (en) Vehicle suspension beam-to-axle connection
EP0340738B1 (fr) Système de suspension pour véhicule
GB2316373A (en) Torque rod configuration
US10239372B2 (en) Equalizer for suspension system
GB2160616A (en) Securing components to composite springs

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LU NL SE