A valve unit for modulating pressure in a compressed-air brake system comprises an inlet valve (6) and an outlet valve (7) configured as diaphragm valves, a brake pressure output (4) configured to be connected to or shut off from a brake pressure input (3) or a vent output (5), two pilot valves (8, 9) configured as 3/2-way solenoid valves, and a respective control chamber (31, 32) adjacent to the diaphragm (17, 18) of the diaphragm valves (6, 7). The diaphragms (17, 18) are each clamped between two housing parts (11, 14; 11′, 14′) via a respective ring bead (22, 23) placed in a housing-side ring groove (20, 21; 20′, 21′). In order to avoid damaging the diaphragms (17, 18), an annular continuous or partially interrupted recess (54) is arranged in the ring groove (20, 21) or immediately adjacent to the ring groove to receive displaced bead material from the diaphragm (17).


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    Title :

    VENTILEINHEIT ZUR DRUCKMODULATION IN EINER DRUCKLUFT-BREMSANLAGE


    Additional title:

    VALVE UNIT FOR MODULATING PRESSURE IN A COMPRESSED-AIR BRAKE SYSTEM
    UNITÉ SOUPAPE POUR LA MODULATION DE PRESSION DANS UN SYSTÈME DE FREINAGE À AIR COMPRIMÉ


    Contributors:

    Publication date :

    2022-03-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    German


    Classification :

    IPC:    F16K VALVES , Ventile / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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