초록 ▼

A pair of front couplings and a pair of rear air spring over shocks couple the cab to the vehicle frame. A motion control link includes a central base and pair of arms extending longitudinally from the central base. A base coupling directly couples the base to the vehicle frame. A rear arm coupling

A pair of front couplings and a pair of rear air spring over shocks couple the cab to the vehicle frame. A motion control link includes a central base and pair of arms extending longitudinally from the central base. A base coupling directly couples the base to the vehicle frame. A rear arm coupling for each arm directly couples the arm to the rear of the cab. The rear base coupling and the rear arm coupling essentially restrict lateral movement of the motion control link and permit tuned lateral movement of the frame relative to the rear of the cab to provide lateral motion control at the rear of the cab. The motion control link defines an arc that intersects the front coupling arc. The rear arm couplings include a rear elastomeric bushing member including voids to accommodate for the intersecting arcs.

대표청구항 ▼

1. A driver's cab suspension comprising: a pair of front couplings between a front of the cab and a pair of frame rails of a vehicle frame, the front couplings being aligned along a front laterally extending axis around which the cab rotates in a front coupling arc;a pair of rear air springs over sh

1. A driver's cab suspension comprising: a pair of front couplings between a front of the cab and a pair of frame rails of a vehicle frame, the front couplings being aligned along a front laterally extending axis around which the cab rotates in a front coupling arc;a pair of rear air springs over shocks coupling a rear of the cab to the vehicle frame;a motion control link comprising a central base and pair of arms extending longitudinally from the central base;a rear base coupling that directly couples the central base to one of the vehicle frame and a rear of the cab;a rear arm coupling for each arm that directly couples the arm to the other of the vehicle frame and the rear of the cab;wherein the rear base coupling and the rear arm coupling essentially restrict lateral movement of the motion control link and permit tuned lateral movement of the frame relative to the rear of the cab to provide lateral motion control at the rear of the cab;wherein the motion control link is rotationally coupled between the vehicle frame and the rear of the cab with the arms rotating about a rear laterally extending axis adjacent the frame and defining a motion control link arc that intersects the front coupling arc;wherein at least one of the rear base member coupling and the rear arm couplings comprise a rear elastomeric bushing member enabling the cab to simultaneously rotate around both the front laterally extending axis and the rear laterally extending axis as the rear of the cab moves vertically to provide vertical motion control of the rear of the cab together with the air springs over shocks; andwherein at least one of the rear base coupling and the rear arm couplings comprises a laterally protruding elastomeric portion projecting laterally toward one of the vehicle frame rails, and engaging against a vehicle surface, to progressively limit lateral movement of the rear of the cab relative to the frame. 2. The driver's cab suspension according to claim 1, wherein each of the front couplings comprises a front elastomeric bushing member enabling the front of the cab to move vertically relative to the frame to provide vertical motion control of the front of the cab. 3. The driver's cab suspension according to claim 2, wherein each of the front elastomeric bushing members enable the front of the cab to move laterally relative to the frame to provide lateral motion control of the front of the cab. 4. The driver's cab suspension according to claim 1, wherein the rear elastomeric bushing member provides torsional motion control at the rear of the cab together with the air springs over shocks, without requiring one arm of the motion control link to rotate in a first direction relative to the base while the other arm of the motion control link rotates in a second direction relative to the base that is opposite to the first direction. 5. The driver's cab suspension according to claim 1, wherein the motion control link comprises one of a generally C-shaped member with the base extending laterally and the pair of arms extending from opposite ends of the base, and a generally V-shaped member with the base at the apex of the V and the pair of arms extending angularly from the base. 6. The driver's cab suspension according to claim 1, wherein the rear base coupling comprises a clamshell housing clamping an annular bushing around the base at a predetermined compression that restricts axial movement of the base relative to the clamshell housing. 7. The driver's cab suspension according to claim 1, further comprising a driver selectable electronic controller operably coupled to the pair of rear air springs over shocks to provide electronic control of the pair of rear air springs over shocks. 8. A driver's cab suspension comprising: a pair of front couplings between a front of the cab and a pair of vehicle frame rails of a vehicle frame, the front couplings being aligned along a front laterally extending axis around which the cab rotates along a rearwardly extending coupling arc;a pair of rear air springs over shocks coupling a rear of the cab to the vehicle frame;a motion control link comprising a laterally extending base and pair of arms extending forwardly from the base;a rear frame coupling that rotationally couples the base to the vehicle frame while essentially restricting lateral movement of the motion control link relative to the frame;a rear cab coupling for each arm that rotationally couples the arm to a rear of the cab and comprises a rod member coupled to a fixed cab member, and the rod member extending through an elastomeric cab bushing member, the elastomeric cab bushing member having a protruding portion protruding laterally toward one of the frame rails, and wherein engagement between the protruding portion of the elastomeric cab bushing member and a surface of the fixed cab member progressively limits lateral movement of the rear of the cab relative to the motion control link;wherein the motion control link, the rear frame coupling, and the rear cab coupling, in combination, provides tuned lateral motion control at the rear of the cab relative to the frame;wherein an arc length is defined between a laterally extending central axis of the base and a laterally extending central axis of the rod member, and the elastomeric cab bushing member of each rear arm coupling comprises at least one void enabling the arc length to change sufficiently to accommodate for simultaneous rotation of the cab around both the front laterally extending axis and the rear laterally extending axis as the rear of the cab moves vertically to provide tuned vertical motion control of the rear of the rear of the cab together with the air springs over shocks. 9. The driver's cab suspension according to claim 8, wherein each of the front couplings comprises a front elastomeric bushing member comprising at least one void enabling the front of the cab to move vertically relative to the frame to provide vertical motion control at the front of the cab. 10. The driver's cab suspension according to claim 8, wherein the rear frame coupling comprises a elastomeric frame bushing member, and wherein one of the elastomeric frame bushing member, the elastomeric cab bushing members, or both, comprises at least one torsional void enabling sufficient torsional rotation of the cab relative to the frame to provide tuned torsional motion control at the rear of the cab without the need for opposing rotation about the rear laterally extending axis of one arm relative to the other arm. 11. The driver's cab suspension according to claim 8, wherein the rear frame coupling comprises a clamshell housing clamping an annular bushing around the base at a predetermined compression that essentially restricts axial movement of the base relative to the clamshell housing. 12. The driver's cab suspension according to claim 8, wherein the motion control link comprises a generally C-shaped member with the base extending laterally and the pair of arms extending from opposite ends of the base. 13. The driver's cab suspension according to claim 8, further comprising a driver selectable electronic controller operably coupled to the pair of rear air springs over shocks to provide electronic control of the pair of rear air springs over shocks. 14. A driver's cab suspension comprising: a pair of front couplings between a front of the cab and a vehicle frame, each said front coupling comprising a laterally extending front rod member coupled to a front fixed cab member, each said front rod member extending through a front elastomeric cab bushing member, wherein each said elastomeric front elastomeric cab bushing member comprises at least one void in a space between the laterally extending front rod member and an outer collar of the respective front coupling that enables tuned vertical movement of the front of the cab relative to the frame;a pair of rear air spring over shocks coupling a rear of the cab to the vehicle frame;a motion control link comprising a base and pair of arms extending from the base;a base coupling that rotationally couples the base to one of a rear of the cab and the vehicle frame and essentially restricts lateral movement of the motion control link relative to the frame and the one of the rear of the cab and the vehicle frame;a rear arm coupling between a distal end of each said arm and the other of the one of the rear of the cab and the vehicle frame, each said rear arm coupling comprising a laterally extending rear rod member coupled to a rear fixed member of the other of the one of the rear of the cab and the vehicle frame, each said rear rod member extending through an elastomeric rear bushing member, wherein a generally annular protruding portion of each said elastomeric rear bushing member engages an opposing surface of the rear fixed member to progressively resist lateral movement of the rear of the cab relative to the vehicle frame as the generally annular protruding portion is compressed. 15. The driver's cab suspension according to claim 14, wherein each said elastomeric front bushing member comprises a generally annular protruding portion with exterior voids engaging an opposing surface of the front fixed cab member to progressively resist lateral movement at the front of the cab relative to the vehicle frame as the generally annular protruding portion is compressed. 16. The driver's cab suspension according to claim 14, wherein each said elastomeric rear bushing member comprises at least one void in a space between the laterally extending rear rod member and an outer collar of the respective rear arm coupling that enables tuned vertical movement of the rear of the cab relative to the frame. 17. The driver's cab suspension according to claim 14, wherein the rear rod members define a common, laterally extending, central axis, and wherein a distance between the common central axis and a central axis of the base increases and decreases as the rear of the cable moves vertically relative to the frame. 18. The driver's cab suspension according to claim 14, further comprising a driver selectable electronic controller operably coupled to the pair of rear air springs over shocks to provide electronic control of the pair of rear air springs over shocks. 19. The driver's cab suspension according to claim 14, wherein the base coupling comprises a clamshell housing clamping an annular bushing around the base at a predetermined compression that essentially restricts axial movement of the base relative to the clamshell housing.