Independent wheel suspension

专利名称：Independent wheel suspension发明人：HIRST ARCHIE JOHN申请号：US34513153申请日：19530327公开号：US2836413A公开日：19580527

摘要：716,563. Spring suspensions; rubber springs. METALASTIK, Ltd. March 16, 1953[Jan. 11, 1952], No. 858/52. Classes 108(2) and 108(3) In an independent suspension for avehicle wheel in which a wheel hubcarrying member is carried by a linkage which permitsand guides deflection of the wheel relative to the superstructure of the vehicle, a rubbersandwich is interposed between mounting plates or abutments on the superstructureand on a part of the linkage movable with respect to the superstructure, the ends of therubber sandwich being rigidly secured to the respective mounting plates or abutmentsand the sandwich being so arranged that the relative motion in a vertical plane betweenits ends at a normal static load position has an instantaneous direction making a smallangle with the'plane of the mounting plate or abutment on the superstructure this angleand the rigid fixing of the ends ensuring that vertical loads, for example due to theweight of the vehicle, are borne by the rubber in both compression and shear. In thearrangement according to Fig. 1, in which a wheel hub-carrying member 1 is pivotallyconnected to a chassis 2 by upper and lower pairs of links 3 and 4 and also by a torquearm 7 rigidly attached to the member 1, a pair of rubber sandwich elements 8, 8 islocated between abutments 11 and 12 on the member 1 and chassis 2 respectively. Aconstraining arm 14 between adjacent ends of the elements 8 is pivotally connected to

the links 3. The abutment 12 is vertically adjustable on the chassis 2. pivotal connectionsbetween the arm 7 and the chassis and at least three of the pivotal connections betweenthe links 3 and 4 and the member 1 and the chassis 2 include a universal resilientconnection, Fig. 4 (not shown), comprising a spherically shaped pivot pin which is locatedwithin a complementary hollow casing with the interposition of a rubber element,preferably bonded to the pivot pin, which is precompressed on assembly of theconnection. The sandwich elements 8, each comprise rubber blocks 9 of rhomboidalcross-section in a plane perpendicular to the axes of the pivots between the links 3. 4 andthe chassis 2, the elements being stressed in shear and compression during assembly intothe linkage. In a similar arrangement, Fig. 5 (not shown), comprising upper and lowerwishbone links connecting a wheel hub carrying member to a chassis, a single rubbersandwich element is disposed between the hub member and the chassis the connectionsbetween the upper link and the chassis member and the hub-carrying member beingformed by rubber bushes, preferably of the type disclosed in Specification 581,464. Thelower link is connected to the hub-carrying member and to the. chassis by roller hingesof the form disclosed in Specification 714,074. In the arrangement according to Figs. 6and 7 in which a link 32 comprising two.symmetrical castings or forgings 33 securedtogether at abutting edges 34, is connected by pivots or hinges 35 to a chassis bracket 36and is formed with a housing 37 for connection to a hub-carrying member, rubber

sandwich springs 3 are interposed between abutments 41 and 42 respectively. The hinges35 are of the type according to Specification 714.074 A detachable cover plate 47 is fittedto the link to protect the spring 38. A further link may be used above or below the link32. In a modification of the Fig. 1 arrangement, Fig. 8 (not shown), for a steerable roadwheel, a strut member is pivotally connected between the upper and lower links andforms an abutment for the outer end of the rubber spring. The pivotal connections forthe strut comprise hinges of the type according to Specification 714 074, seatings for thehinges being provided on housings for ball and socket joints at the upper and lower endsof the hub-carrying member. Vertical adjustment of the pivotal connection of the arm 14

in the Fig. 1 arrangement may be effected by providing the arm with slotted holes bywhich the arm is attached to a block which is pivotally mounted on the upper link with theinterposition of a rubber bush. In an alternative arrangement the arm may be pivotallyconnected to the link through a constraining link to which the arm is also pivotallyconnected. Both pivotal connections include rubber bushes. The constraining arm may beextended for pivotal connection to the lower suspension link. According to theProvisional Specification, the outer end of a lower wishbone link, in a constructioncomprising upper and lower links, includes rubber bushes according to Specification681,836.

申请人：METALASTIK LIMITED

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