A linear actuator assembly for a hydraulic electronic control unit (HECU) of a vehicle braking system. The linear actuator assembly comprises a bi-directional electric motor 50, a ball screw drive including a ball screw drive spindle 53 and a ball screw drive nut 54, a profile pipe 55, a piston 56 and a piston housing 57. Both the piston and piston housing have an oval shape (oval or elliptical cross-sectional shape, see e.g. figures 6-7). The electric motor 50 is able to actuate (e.g. rotate) the spindle 53 in a pressure build-up direction and a release pressure direction. The profile pipe 55 is fixed at one end with the nut 54 and at the other end to the piston 56. When the spindle 53 is actuated in the pressure build-up direction, the nut 54 and profile pipe 55 push the piston in the piston housing. There may also be an oval gasket and oval back-up ring. The oval shape is included to prevent rotation of the piston, profile pipe and nut.


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    Title :

    Linear actuator


    Contributors:

    Publication date :

    2022-11-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / F16H Getriebe , GEARING / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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