Abstract: A vehicle suspension system comprises a wheel carrying member for rotatably carrying a wheel of a vehicle. The wheel carrying member is provided with an extension extending upwardly. A first upper arm member extends in a substantially longitudinal direction of the vehicle and is pivotally connected at one end with an upper end portion of said the extension and at the other end with a vehicle body member. A second upper arm member is arranged downward of the first upper arm member, extending in a substantially transverse direction of the vehicle and pivotally connected at one end with the wheel carrying member and at the other end with the vehicle body member. A lower arm is connected at one end with a lower portion of the wheel carrying member and at the other end with the vehicle body member for restricting at least a longitudinal and transverse movement of the wheel carrying member. A desirable camber and caster angle control can be accomplished.

Abstract: A hydropneumatic suspension system for a vehicle has a hydraulic cylinder-piston device connected between the vehicle body and each of the wheels, and a plurality of gas springs which exert a spring force according to the hydraulic pressure in the hydraulic chamber of the cylinder-piston device. Each gas spring has a fluid chamber and a gas chamber which are defined in a casing and are separated from each other by a movable partition wall, and the fluid chamber is communicated with the hydraulic chamber of the hydraulic cylinder-piston device. The upper end portion of the piston rod is supported by the vehicle body by way of a mount. The piston rod is provided with a fluid passage which axially extends through the piston rod and the lower end of which opens to the hydraulic chamber of the cylinder-piston device. A support member is fixed to the piston rod at an upper portion below the mount.

Abstract: A vehicle rear suspension system comprises a wheel carrying member for rotatably carrying a wheel of a vehicle, a plurality of lateral links connected to a vehicle body at inner ends and to the wheel carrying member at outer ends, a trailing arm extending rearwardly and connected to the vehicle body at its front end for pivotal movement and to the wheel carrying member at its rear end through a joint. The joint is located on a substantially straight line extending through both a front connecting point between the trailing arm and the vehicle body and a wheel center or outward of the line in the transverse direction. The joint allows a relative angular displacement between the wheel carrying member and the longitudinal member in a substantially horizontal plane so that no toe-out movement is produced in the wheel under a braking condition of the vehicle.

Abstract: A suspension system for a vehicle includes a suspension arm. The outer end portion of the suspension arm is connected to a wheel support for rotatably supporting a wheel. The inner end portion of the suspension arm is bifurcated and has first and second branch arms spaced from each other in the longitudinal direction of the vehicle body. Each of the inner end portions of the first and second branch arms is supported by a slide member so that the inner end portion is slidable relative to the vehicle body in the longitudinal direction of the same. A coil spring is provided for at least one of the first and second branch arms and urges forward the suspension arm. A stopper defines the foremost position of the suspension arm which is urged forward by said coil spring.

Abstract: A vehicle suspension system includes a liquid piston-cylinder device connected between the vehicle body and a wheel. A liquid pump is provided in a liquid passage which connects the liquid piston-cylinder device to a reservoir in which hydraulic liquid is reserved, and feeds under pressure the hydraulic liquid in the reservoir through the liquid passage. A control valve controls the flow of the hydraulic liquid through the liquid passage, thereby controlling feed and discharge of the hydraulic liquid to and from the liquid piston-cylinder device in order to control the properties of the suspension. An accumulator is connected to the liquid passage between the liquid pump and the control valve and accumulates the hydraulic liquid under pressure. A return passage connects the reservoir to the liquid passage between the liquid pump and the control valve and is provided with an on-off valve which opens and closes the return passage.

Abstract: In a rear suspension system for a four-wheel-steered vehicle, each wheel support is connected to a rear wheel turning rod so that the rear wheel on the wheel support is turned about a king pin axis when the rear wheel turning rod is displaced. Upper and lower arms define the king pin axis, and the rear wheel on the wheel support is turned about the king pin axis in response to displacement of the rear wheel turning rod. The king pin axis is tilted inward from the vertical and intersects the tread of the rear wheel at a point which is longitudinally offset from the point at which a side force acts on the rear wheel during cornering. A coil spring is connected between the wheel support and the vehicle body and restrains vertical motion of the wheel support under the counterforce thereof.

Abstract: A four-wheel-steered vehicle is provided with a front wheel turning mechanism and a rear wheel turning mechanism which respectively turn front and rear wheels in response to the rotation of a steering wheel. The rear wheels are turned in the same direction as the front wheels when the steering wheel is turned while the vehicle is in a predetermined operating condition. A rear suspension system which supports a rear wheel has a wheel support which supports a rear wheel and is connected to a rear wheel turning rod of the rear wheel turning mechanism so that the rear wheel on the wheel support is turned about a king pin axis when the rear wheel turning rod member is displaced. Upper and lower arms are connected to the wheel support and guide the wheel support so that the rear wheel on the wheel support is turned about the king pin axis in response to displacement of the rear wheel turning rod.

Abstract: A vehicle suspension system has fluid cylinders connected between the vehicle body and the respective wheels. A fluid control system controls feed and discharge of hydraulic fluid to and from the fluid cylinders and changes the suspension properties of the suspension system. A failure in the fluid control system is detected and when the control system fails, one of first to third measure modes is taken on the basis of the kind of the failure. Warning is just given and the control of feed and discharge of hydraulic fluid to and from the fluid cylinders being continued when the first measure mode is taken, the control of feed and discharge of hydraulic fluid to and from the fluid cylinders is interrupted with the chassis height fixed to the present height when the second measure mode is taken, and the fluid in the fluid cylinders is discharged and the chassis height is lowered when the third measure mode is taken.

Abstract: A suspension system for a vehicle comprises a wheel supporting structure provided for supporting a steerable wheel rotatably and composed of upper and lower support members, an upper suspension member extending from a body of the vehicle for connecting the upper support member with the body in such a manner that the upper support member is movable up and down in relation to the body, a lower suspension member extending from the body for connecting the lower support member with the body in such a manner that the lower support member is movable up and down in relation to the body, and an elastic joint structure provided for coupling the lower support member with the upper support member so that the lower support member is engaged with the upper support member only through the elastic joint structure and constituted to be relatively flexible in a vehicle longitudinal direction and relatively hard in a vehicle transverse direction.

Abstract: A suspension including a swing arm extending in a longitudinal direction of a vehicle and swingably connected with a vehicle body at a joint portion through a connecting member. The suspension comprising a joint structure between the joint portion of the swing arm and the connecting member for allowing a swingable movement of the swing arm in both vertical and horizontal directions relative to the vehicle body and a damping member provided in the connecting member for absorbing a vibration of the swing arm in the longitudinal direction.

Abstract: The present invention is drawn to a structure for supporting suspension arms connected with a wheel supporting member on a vehicle body having a main frame and a side sill, which extend in the longitudinal direction of the vehicle body side by side. The structure includes a bracket which pivotally supports a swing arm on the main frame and the side sill, whereby load on the swing arm is distributed to the main frame and the side sill. And, the rigidity of the vehicle body is improved by the connection of the main frame to the side sill with the bracket.

Abstract: A double wishbone type suspension assembly of a vehicle is supported by a suspension supporting member through upper and lower control arms. The suspension supporting member comprises a cross member pivotally mounting the lower control arm and resiliently connected to a car body, and a supporting frame member pivotally mounting the upper control arm and resiliently connected to the car body, in particular to suspension tower of the car body. for resilient connection, a connecting mount which is prevented from being distorted laterally but is able to distort axially is provided between each member and the car body to be connected.

Abstract: A wheel support rotatably supports a dirigible wheel. An upper wheel-support support member connects an upper portion of the wheel support to the vehicle body, and a lower wheel-support support member connects a lower portion of the wheel support to the vehicle body. The upper and lower wheel-support support members are arranged to respectively define upper and lower pivot points which define an imaginary kingpin axis. At least one of the upper and lower wheel-support support members is formed of a pair of separate link members one end of each of which is pivoted on the vehicle body at different portions of the vehicle body and the other end of each of which is rotatably connected to the wheel support at different portions of the wheel support.

Abstract: A rear suspension apparatus for an automotive vehicle includes a rear wheel support the front and rear ends of which are resiliently supported on the vehicle chassis. The elastic characteristic of the resilient support is such that the front end of the wheel support readily deflects from the outward to the inward side of the vehicle chassis. The resilient support system resiliently supporting the rear end of the wheel support is set in such a manner that the rear end of the wheel support will readily deflect from the inward to the outward side of the vehicle chassis.

Abstract: An automobile front body skeleton comprises a main frame structure, including a pair of spaced side frames, a front cross member and a rear cross member, and a subframe structure secured to the main frame structure for the support of an automobile power plant. The subframe structure comprises a pair of spaced longitudinal frame members extending between, and secured to, the front and rear cross member, and a transverse frame member extending generally parallel to and adjacent the front cross member. Either each longitudinal frame member or the transverse frame member is secured to the side frames.

Abstract: A vehicle rear suspension system including a wheel hub supporting a rear wheel for rotation, a front lateral link extending transversely and connected through a front inner rubber bush with the vehicle body and through a front outer rubber bush with the wheel hub, a rear lateral link extending transversely and connected through a rear inner rubber bush with the vehicle body and through a rear outer rubber bush with the wheel hub.

Abstract: A vehicle suspension system including a wheel hub on which a wheel is rotatably mounted, a pair of lateral link substantially transversely extending and disposed in a spaced relationship with each other in the longitudinal direction of the vehicle, the lateral link being pivotally connected to the vehicle body at the inner end and to the wheel hub at the outer end thereof so that the wheel hub can be swingably moved in the vertical direction relative to the vehicle body, in which at least one of the lateral link is divided into an inner and outer link members, the inner link member being connected to the outer link member by a connector including a precompressed resilient member constituted to be deflected in the axial direction of the lateral links when the compressive force is applied to the resilient member beyond the precompressed force so as to reduce the length of the lateral link member.