Vehicle brake system having a gas pressure accumulator

Vehicle brake system having a gas pressure accumulator, which comprises a housing, the interior of which is divided by metal bellows into a gas-sensed gas chamber and a fluid chamber, wherein via a feed line a fluid may be supplied under pressure to and removed from the fluid chamber, and provided between the fluid chamber and the feed line is a valve arrangement, which closes when the pressure in the feed line drops below a minimum value and opens when the pressure exceeds the minimum value and which closes when the pressure in the feed line exceeds a maximum value and opens when the pressure drops below the maximum value,

• wherein the valve arrangement comprises a hollow cylinder, which is provided on the metal bellows, is directed along an axis and has two internally disposed, axially spaced-apart sealing seats, wherein the hollow cylinder is disposed in an axially displaceable manner around a piston provided in a fixed manner on the housing, and the sealing seats comprise sealing surfaces parallel to the piston axis.

Vehicle brake system having a gas pressure accumulator, which comprises a housing, the interior of which is divided by metal bellows into a gas-sensed gas chamber and a fluid chamber, wherein via a feed line a fluid is supplied under pressure to and removed from the fluid chamber, and provided between the fluid chamber and the feed line is a valve arrangement, which closes when the pressure in the feed line drops below a minimum value and opens when the pressure exceeds the minimum value and which closes when the pressure in the feed line exceeds a maximum value and opens when the pressure drops below the maximum value, wherein the valve arrangement comprises a piston, which is provided on the metal bellows and is displaceable along an axis between two sealing seats, wherein the sealing seats are arranged axially spaced-apart inside a hollow cylinder, which is provided in a fixed manner on the housing, and comprise sealing surfaces parallel to the piston axis, wherein the metal bellows are constructed substantially in the shape of a hollow cylinder and the piston as well as the hollow cylinder are disposed radially inside the metal bellows.

Vehicle brake system having a gas pressure accumulator, which comprises a housing, the interior of which is divided by metal bellows into a gas-sensed gas chamber and a fluid chamber, wherein via a feed line a fluid is supplied under pressure to and removed from the fluid chamber, and provided between the fluid chamber and the feed line is a valve arrangement, which closes when the pressure in the feed line drops below a minimum value and opens when the pressure exceeds the minimum value and which closes when the pressure in the feed line exceeds a maximum value and opens when the pressure drops below the maximum value, wherein the valve arrangement comprises a piston, which is provided on the metal bellows and is displaceable along an axis between two sealing seats, wherein the sealing seats are arranged axially spaced-apart inside a hollow cylinder, which is provided in a fixed manner on the housing, and comprise sealing surfaces parallel to the piston axis, wherein connected to the hollow cylinder is a coaxial mandrel, on which the piston is guided or which is guided in the piston.

Vehicle brake system having a gas pressure accumulator, which comprises a housing, the interior of which is divided by metal bellows into a gas-sensed gas chamber and a fluid chamber, wherein via a feed line a fluid is supplied under pressure to and removed from the fluid chamber, and provided between the fluid chamber and the feed line is a valve arrangement, which closes when the pressure in the feed line drops below a minimum value and opens when the pressure exceeds the minimum value and which closes when the pressure in the feed line exceeds a maximum value and opens when the pressure drops below the maximum value, wherein the valve arrangement comprises a piston, which is provided on the metal bellows and is displaceable along an axis between two sealing seats, wherein the sealing seats are arranged axially spaced-apart inside a hollow cylinder, which is provided in a fixed manner on the housing, and comprise sealing surfaces parallel to the piston axis, which sealing surfaces are engaged by the piston to provide a sliding seal therebetween.