Suspension device for a vehicle seat, comprising an upper suspension portion and a lower suspension portion, said suspension portions being connected to one another by a first swivel connector and a second swivel connector, said first swivel connector being arranged on the lower suspension portion in such a way that it can swivel about a first swivel pin, and said second swivel connector being arranged on the lower suspension portion in such a way that it can swivel about a second swivel pin, a first tension spring and a second tension spring being respectively connected to the first swivel connector by means of a first end region and to the upper suspension portion or the lower suspension portion by means of a second end region, wherein the first end region of the first tension spring is attached to the first swivel connector at a first distance therefrom, and the first end region of the second tension spring is attached to the first swivel connector at a second distance therefrom, the length of the first distance being variable.

Provided is a semi-active seat suspension system that minimizes vibration and energy transmission from a vibration/energy source, such as a motor vehicle, to a seated occupant by means of a spring and computer-controlled damper suspension system. Using a variety of sensors to determine an ideal damping rate at a given point in time, the system adjusts the damping rate in real time to provide the best possible ride to the occupant given the constraints of the system.

Various embodiments of the present technology may comprise a method and apparatus for a space-saving suspension system. In various embodiments, the apparatus may comprise a fine suspension device, a coarse suspension device, and a mechanical assembly. In various embodiments, the fine suspension device is arranged at an angle greater than zero degrees from the z-axis. In various embodiments, the mechanical assembly is coupled to the fine suspension device and a payload, such that when a force is exerted on the mechanical assembly by the payload, an applied force is transmitted to the fine suspension device.

There is described a vehicle seat suspension mechanism, comprising a vehicle mount, a seat support linked to the vehicle mount by a suspension arrangement which allows the seat support to fall with respect to the vehicle mount under load and a shock strut arranged to resist the seat support falling with respect to the vehicle mount during a compression stroke. A control link is arranged to be driven about a control link pivot by the fall of the seat support. The control link is pivotally coupled to a first end of the shock strut to guide the first end with respect to a second end of the shock strut in a manner which causes a motion ratio of the suspension mechanism to increase during progression of the compression stroke. The ride will feel softer for smaller impacts and better damped later for larger impacts. The mechanism is arranged underneath a seat of a vehicle to provide additional comfort for the rider.

The invention relates to a vehicle cab or a vehicle seat comprising an upper part and a lower part which are vertically spring-mounted relative to one another by means of at least one height-adjustable scissor-action frame comprising two scissor arms which are pivotable about a common axis, and at least one air spring having a variable air volume, it being possible for movements of the scissor-action frame to be transmitted to a switching element, by means of a transmission element that is mechanically operatively connected to the scissor-action frame, in order to control the air volume of the air spring, wherein a height-adjustment device for the scissor-action frame, comprising a manually actuable control lever element and a guide element that is mechanically operatively connected thereto, the switching element being able to be pivoted about a first axis of rotation and the transmission element being able to be pivoted about the first axis of rotation in the opposite direction to the switching element by means of the guide element, in order to change a neutral position of the switching element that is between two switches provided for controlling an air volume of the air spring.

A suspension system with vibration isolation is described. The system can incorporate a kinematic structure comprising pairs of X-shaped supporting structures connected in parallel. The kinematic structure limits motion in the vertical direction to a single degree of freedom. Tensioning/damping of the kinematic structure orthogonally to the vertical motion limits horizontal motion of the kinematic structure with a corresponding constraint of motion of in the vertical direction. The tensioning/damping imparts passive nonlinear stiffness and nonlinear damping of the vibrational energies across the suspension system. A tuning mechanism can be incorporated enabling tension/damping adjustment to accommodate different heights and payloads. The system can provide vibration isolation at low frequencies and over a wide range of operational frequencies. The suspension system has tunable ultra-low resonant frequencies with anti-resonance characteristics. In an example application, the suspension system can be incorporated into a seat for applications experiencing whole body vibrations.

The invention relates to a vehicle cab or a vehicle seat comprising an upper part and a lower part which are vertically spring-mounted relative to one another by means of at least one height-adjustable scissor-action frame comprising two scissor arms which are pivotable about a common axis, and at least one air spring having a variable air volume, it being possible for movements of the scissor-action frame to be transmitted to a switching element, by means of a transmission element that is mechanically operatively connected to the scissor-action frame, in order to control the air volume of the air spring, wherein a height-adjustment device for the scissor-action frame, comprising a manually actuable control lever element and a guide element that is mechanically operatively connected thereto, the switching element being able to be pivoted about a first axis of rotation and the transmission element being able to be pivoted about the first axis of rotation in the opposite direction to the switching element by means of the guide element, in order to change a neutral position of the switching element that is between two switches provided for controlling an air volume of the air spring.

Vehicle seat comprising a vehicle seat upper part and a vehicle seat lower part, the vehicle seat upper part being movable relative to the vehicle seat lower part, and the vehicle seat upper part being able to be sprung and damped, relative to the vehicle seat lower part, by a suspension and damping element, the suspension and damping element comprising a reversibly deformable plastics element and an adjusting element, the plastics element and the adjusting element being in operative contact, and the spring characteristics of the suspension and damping element being able to be adjusted depending on the position of the adjusting element relative to the plastics element.

The invention relates to a shock absorber with a housing, an inner pipe arranged in the housing, a piston rod, a piston which is arranged at that end of the piston rod, and which piston divides the interior of the inner pipe into a lower chamber and an upper chamber, a first valve arrangement which is arranged on the piston, and a third valve arrangement which is arranged at the lower end of the inner pipe and by means of which the working medium which is held in the interior of the housing, serving as a tank, can flow out of the interior of the housing, only into the lower chamber when the piston moves in the inner pipe. The shock absorber is distinguished by the fact that a hydraulic pump drive is arranged between a first connection element of the lower chamber of the inner pipe and a second connection element at the upper chamber of the inner pipe.

Various embodiments of the present technology may comprise a method and apparatus for a space-saving suspension system. In various embodiments, the apparatus may comprise a fine suspension device, a coarse suspension device, and a mechanical assembly. In various embodiments, the fine suspension device is arranged at an angle greater than zero degrees from the z-axis. In various embodiments, the mechanical assembly is coupled to the fine suspension device and a payload, such that when a force is exerted on the mechanical assembly by the payload, an applied force is transmitted to the fine suspension device.