Suspension systems and grounds maintenance vehicles incorporating the same are disclosed. The suspension system may include biasing elements or springs that may be adjusted to vary the preload and thus change the spring and dampening characteristics of the suspension system. In some embodiments, the system may include an adjustment mechanism that permits simultaneous adjustment of two springs via a single action. In other embodiments, features adapted to assist an operator with mounting/dismounting the vehicle are disclosed.

In an embodiment a mobility vehicle platform includes a body part open toward an upper side and configured to receive a cabin at the upper side and a wheel part detachably connected to the body part, wherein the wheel part includes a steering member rotatable about an axis extending in an upward/downward direction, a wheel member connected to the steering member and configured to contact a ground surface, and a coupling member, into which the steering member is inserted, and detachably mounted to the body part, wherein the body part includes a body member configured to receive the cabin at an upper side thereof, and a protruding member coupled to the body member to protrude toward an outside of the body member, and to which the coupling member is coupled, and wherein the coupling member includes a first coupling part extending upwards and a second coupling part extending from an upper end of the first coupling part toward the body part.

In an embodiment a mobility vehicle platform includes a body part open toward an upper side and configured to receive a cabin at the upper side and a wheel part detachably connected to the body part, wherein the wheel part includes a steering member rotatable about an axis extending in an upward/downward direction, a wheel member connected to the steering member and configured to contact a ground surface, and a coupling member, into which the steering member is inserted, and detachably mounted to the body part, wherein the body part includes a body member configured to receive the cabin at an upper side thereof, and a protruding member coupled to the body member to protrude toward an outside of the body member, and to which the coupling member is coupled, and wherein the coupling member includes a first coupling part extending upwards and a second coupling part extending from an upper end of the first coupling part toward the body part.

Integrated bumpers are presented including: a suspension assembly including, a suspension plate coupled with a robotic device chassis along a top surface of the robotic device chassis, a number of radially disposed springs positioned along a portion of a perimeter of the suspension plate and coupled with the suspension plate, and a number of cutouts positioned along the perimeter of the suspension plate; and a cover coupled with the suspension assembly, the cover including, a number of spring anchors coupled with the number of springs, which in some embodiments may be radially disposed, and a number of tabs aligned with the number of cutouts to limit movement of the suspension plate. In some embodiments, integrated bumpers further include: two impact sensors positioned along a second portion of the perimeter, the two impact sensors detecting movement between the suspension assembly and the cover.

Integrated bumpers are presented including: a suspension assembly including, a suspension plate coupled with a robotic device chassis along a top surface of the robotic device chassis, a number of radially disposed springs positioned along a portion of a perimeter of the suspension plate and coupled with the suspension plate, and a number of cutouts positioned along the perimeter of the suspension plate; and a cover coupled with the suspension assembly, the cover including, a number of spring anchors coupled with the number of springs, which in some embodiments may be radially disposed, and a number of tabs aligned with the number of cutouts to limit movement of the suspension plate. In some embodiments, integrated bumpers further include: two impact sensors positioned along a second portion of the perimeter, the two impact sensors detecting movement between the suspension assembly and the cover.

A vehicle vibration dampening mount assembly includes a housing, a resilient material, a sleeve and a solenoid. The resilient material has an outer portion attached to an interior surface of the housing and defines first and second chambers with a fluid passage extending therebetween. The sleeve is disposed within the housing and is attached to a central portion of the resilient material extending from a first end to a second end of the housing. The solenoid has a fixed portion mounted to the first end of the housing and a movable portion fixedly attached to the sleeve for movement therewith. The fixed portion has an electromagnetic coil arranged concentrically around the movable portion. The solenoid is configured to selectively move the moveable portion, the sleeve and the central portion of the resilient material in response to electrical current being provided to the electromagnetic coil.

A vehicle vibration dampening mount assembly includes a housing, a resilient material, a sleeve and a solenoid. The resilient material has an outer portion attached to an interior surface of the housing and defines first and second chambers with a fluid passage extending therebetween. The sleeve is disposed within the housing and is attached to a central portion of the resilient material extending from a first end to a second end of the housing. The solenoid has a fixed portion mounted to the first end of the housing and a movable portion fixedly attached to the sleeve for movement therewith. The fixed portion has an electromagnetic coil arranged concentrically around the movable portion. The solenoid is configured to selectively move the moveable portion, the sleeve and the central portion of the resilient material in response to electrical current being provided to the electromagnetic coil.

The disclosure of the present invention relates to a safety automobile having a releasable passenger pod connected to the vehicle chassis with a counter-impact retention system that is configured to reduce perceived impact and to move the passenger pod away from the impact zone of a crash.

The disclosure of the present invention relates to a safety automobile having a releasable passenger pod connected to the vehicle chassis with a counter-impact retention system that is configured to reduce perceived impact and to move the passenger pod away from the impact zone of a crash.

A frame structure for a vehicle includes: an inner panel connected to a side member and defining an inner side of a rear part of the side member; an outer panel connected to a rear side of the side member and coupled to an outer side of the inner panel defining a closed cross-section together with the inner panel and defining an outer side of the rear part of the side member; an opening portion formed below the inner and outer panels partially opening the closed cross-section so that a front end of a rear suspension arm can be inserted into the opening portion; and a reinforcing member disposed in the opening portion defining the closed cross-section together with the outer panel and the inner panel and configured to close an internal space in the outer and inner panels.