A suspension assembly for a commercial vehicle includes a first linkage, an air spring, a carriage, and a second linkage. The first linkage is pivotally coupled at a first end with a structural member of a frame. The structural member extends downwards from the frame. The air spring is coupled with the frame and a second end of the first linkage. The air spring drives the first linkage to pivot about the first end relative to the structural member. The carriage is pivotally coupled with the first linkage at a position between the first end and the second end of the first linkage. The second linkage is pivotally coupled at a first end with the structural member, and pivotally coupled with the carriage at a second end. The structural member, the first linkage, the second linkage, and the carriage define a four-bar linkage.

The present disclosure relates to a hub bracket structure wherein a hub bracket that connects a trailing arm and a hub includes a hub mounting surface, a front connecting surface that connects a front portion of the hub mounting surface and the trailing arm, and a rear connecting surface that connects a rear portion of the hub mounting surface and the trailing arm, each of the front connecting surface and the rear connecting surface is formed in a plate shape extending in up-down and vehicle width directions, and an angle formed by the hub mounting surface and the front connecting surface is greater than an angle formed by the hub mounting surface and the rear connecting surface.

This invention relates to a rolling motor vehicle with three or four wheels, comprising a frame 6 that extends from a forecarriage 8, which supports at least two front wheels 10′,10″, to a rear 12 which supports one or more rear wheels 14. The frame 6 defines an accommodating area 15 for a driver P. The forecarriage 8 in turn comprises: —a forecarriage frame 16; —at least one pair of front wheels 10′,10″ kinematically connected to each other and to the forecarriage frame 16 by means of a rolling kinematic mechanism 20 which enables the front wheels to roll in a synchronous and specular manner, each wheel 10′,10″ being connected to said rolling kinematic mechanism 20 by means of a respective axle journal 60, said axle journal 60 being mechanically connected to a rotation pin 68 of the wheel in order to support it rotatably around an axis of rotation R′-R′, R″-R″; —a roll control system 100 of the motor vehicle; —suspension means 90 which guarantee each axle journal 60 at least one spring suspension movement with respect to said rolling kinematic mechanism 20. The roll control system comprises a rod 110, which connects the two front wheels directly to each other at the respective axle journals 60 at its two ends by means of hinging means 72,73,74 which enable said rod 110 to passively follow the movements of the axle journals 60, the roll movements of the two front wheels and of the respective axle journals causing changes in the lying position of said rod 110 with respect to a vertical projection plane, which is transverse to a centre line plane M-M of the motor vehicle. The rod 110 is usable directly or indirectly by the driver P as a command element of the roll control system 100 to control the rolling movements of the two front wheels without having to put his feet on the ground, adjusting the lying position of the rod 110 itself with his own body. Said command element 110, 120 is disposed so as to be accessible and maneuverable by the driver P from the accommodating area 15.

This invention relates to a rolling motor vehicle with three or four wheels, comprising a frame 6 that extends from a forecarriage 8, which supports at least two front wheels 10′,10″, to a rear 12 which supports one or more rear wheels 14. The frame 6 defines an accommodating area 15 for a driver P. The forecarriage 8 in turn comprises: —a forecarriage frame 16; —at least one pair of front wheels 10′,10″ kinematically connected to each other and to the forecarriage frame 16 by means of a rolling kinematic mechanism 20 which enables the front wheels to roll in a synchronous and specular manner, each wheel 10′,10″ being connected to said rolling kinematic mechanism 20 by means of a respective axle journal 60, said axle journal 60 being mechanically connected to a rotation pin 68 of the wheel in order to support it rotatably around an axis of rotation R′-R′, R″-R″; —a roll control system 100 of the motor vehicle; —suspension means 90 which guarantee each axle journal 60 at least one spring suspension movement with respect to said rolling kinematic mechanism 20. The roll control system comprises a rod 110, which connects the two front wheels directly to each other at the respective axle journals 60 at its two ends by means of hinging means 72,73,74 which enable said rod 110 to passively follow the movements of the axle journals 60, the roll movements of the two front wheels and of the respective axle journals causing changes in the lying position of said rod 110 with respect to a vertical projection plane, which is transverse to a centre line plane M-M of the motor vehicle. The rod 110 is usable directly or indirectly by the driver P as a command element of the roll control system 100 to control the rolling movements of the two front wheels without having to put his feet on the ground, adjusting the lying position of the rod 110 itself with his own body. Said command element 110, 120 is disposed so as to be accessible and maneuverable by the driver P from the accommodating area 15.

A rear suspension member (RSM) transfer assembly for transferring an RSM from a sub-assembly line to a main assembly line includes a first RSM lifter, an RSM buffer, and a second RSM lifter. The first RSM lifter is configured to travel laterally between the sub-assembly line and the main assembly line. The first RSM lifter includes a lifting body and a rotatable arm configured to retrieve the RSM from the sub-assembly line and transport the RSM to the main assembly line. The RSM buffer is configured to receive the RSM from the first RSM lifter and transport the RSM through a plurality of resting positions. The second RSM lifter is configured to receive the RSM from the RSM buffer and raise the RSM into position for installation on a vehicle.

An X-shaped spring for a transportation vehicle wheel suspension system having, per wheel side, a first leaf spring and a second leaf spring made from fiber-reinforced arranged to lie above one another and combined at a respective first end on a first fastening device for transportation vehicle body-side support, wherein the first leaf spring has a second fastening device at its second end for wheel-side support, and the second leaf spring is supported at its second end on the transportation vehicle body side. Towards its second end, the second leaf spring is an arc section curved away from the first leaf spring.

An X-shaped spring for a transportation vehicle wheel suspension system having, per wheel side, a first leaf spring and a second leaf spring made from fiber-reinforced arranged to lie above one another and combined at a respective first end on a first fastening device for transportation vehicle body-side support, wherein the first leaf spring has a second fastening device at its second end for wheel-side support, and the second leaf spring is supported at its second end on the transportation vehicle body side. Towards its second end, the second leaf spring is an arc section curved away from the first leaf spring.

A vehicle rear suspension structure includes a torsion beam and a pair of arm units. Each of the arm units includes a trailing arm formed in a tubular shape extending in the vehicle front-rear direction, an end plate occluding a rear side opening of the trailing arm, an upper reinforcing member, and a lower reinforcing member. A shaft insertion hole is formed in an inner side portion of a rear arm of the trailing arm, the upper reinforcing member is joined to the rear arm to fit an upper side edge portion of a peripheral edge portion of the shaft insertion hole, and the lower reinforcing member is joined to the rear arm to fit a lower side edge portion of the peripheral edge portion of the shaft insertion hole.

Embodiments of the present invention describe a recreational vehicle spindle, including a spindle body having one or more sockets in the spindle body, and an upper attachment mechanism in contact with the spindle body and adapted to attach to a steering component. The spindle also includes a lower attachment mechanism in contact with the spindle body and adapted to attach to a ski or wheel. The one or more sockets are adapted to each receive a ball and stud forming one or more ball joints.

A twist beam for a suspension of a motor vehicle comprises a body-side inner part having a bearing-receiving section for receiving a body-side bearing, and a wheel carrier-side outer part having a bearing-receiving section for receiving a wheel carrier-side bearing, the outer part and the inner part being separate components which are made of different materials and are firmly connected to each other.