Vehicle seat which is adjustable in height and with automatic weight adjustment
First Claim
1. A vehicle seat including a seat frame;
- a base frame;
a gas spring operatively arranged between the seat frame and the base frame;
a valve means for adjusting the pressure in the gas spring in response to the weight of the seat occupant;
an actuating member for actuating the valve means;
a means for adjusting a desired seat height;
a belt reel means disposed between the seat frame and the base frame, said belt reel means including a coupling means, said coupling means and said gas spring adapted to be subjected to the action of a pressure gas;
a pressure source for supplying said pressure gas, said pressure source including a compressor and a drive motor for the compressor, said compressor and said drive motor being located on the vehicle seat, wherein said valve means comprises;
an electromagnetically actuable 2/2-way valve, which serves only for the release of gas from the gas spring and an electromagnetically actuable 3/2-way valve located between said pressure source and the coupling means of the belt reel means; and
an electronic control circuit having outputs for connection to respective ones of said valves, inputs for a seat level switch, an up/down setting switch and a seat contact switch respectively, an output for connection to the drive motor for the compressor, a microprocessor, an input circuit means between the microprocessor and said inputs of the control circuit and output stages between the microprocessor and respective ones of said valves.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle seat which is adjustable in height and which affords automatic adjustment to the seat occupant weight comprises a gas spring between a seat frame and a base frame, a valve arrangement actuable by an actuating element to adjust the pressure in the gas spring in dependence on the weight of the seat occupant, and a means for setting the desired seat height. Disposed between the seat and base frames is a belt reel device with a coupling means, which like the gas spring, can be subjected to the action of pressure gas from a pressure source. The pressure source comprises a compressor driven by a drive motor, which are disposed on the vehicle seat. The valve arrangement includes a 2/2-way valve which serves only for the release of pressure gas from the gas spring, and a 3/2-way valve between the pressure source and the coupling means of the belt reel device. The valve arrangement may be mechanical/pneumatic in operation or may be controlled by an electronic control arrangement.
77 Citations
5 Claims
-
1. A vehicle seat including a seat frame;
- a base frame;
a gas spring operatively arranged between the seat frame and the base frame;
a valve means for adjusting the pressure in the gas spring in response to the weight of the seat occupant;
an actuating member for actuating the valve means;
a means for adjusting a desired seat height;
a belt reel means disposed between the seat frame and the base frame, said belt reel means including a coupling means, said coupling means and said gas spring adapted to be subjected to the action of a pressure gas;
a pressure source for supplying said pressure gas, said pressure source including a compressor and a drive motor for the compressor, said compressor and said drive motor being located on the vehicle seat, wherein said valve means comprises;an electromagnetically actuable 2/2-way valve, which serves only for the release of gas from the gas spring and an electromagnetically actuable 3/2-way valve located between said pressure source and the coupling means of the belt reel means; and an electronic control circuit having outputs for connection to respective ones of said valves, inputs for a seat level switch, an up/down setting switch and a seat contact switch respectively, an output for connection to the drive motor for the compressor, a microprocessor, an input circuit means between the microprocessor and said inputs of the control circuit and output stages between the microprocessor and respective ones of said valves. - View Dependent Claims (2, 3, 4, 5)
- a base frame;
Specification