Electro-mechanical brake unit, preferably for a rail vehicle
AssigneeSAB Nife AB
InventorLars M. Severinsson
Life of this patent
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Abstract
An electro-mechanical brake unit includes a drive sleeve (8), which may be subjected to a torque, for example from a coil spring (6), and a ball screw (15, 25) for transforming the torque into an axial force for brake application. Between the drive sleeve and the ball screw there is a control arrangement, comprising an outer locking spring (16), a control sleeve (17), and an inner locking spring (18), a control motor (20) being connected to the control sleeve for rotation thereof in either direction. The control sleeve is connected to the locking springs for control of their locking and unlocking functions.
Claims10
A brake unit, comprising energy storing means for providing energy by rotational movement, electric motor and drive means for supplying energy to said storing means, and a drive mechanism for transmitting a rotational movement from said energy storing means to conversion means for transforming said rotational movement into an axial movement of a force transmitting member, characterized in that clutch and control means are arranged between the drive mechanism and said conversion means for accomplishing a controlled force transmission from the energy storing means to the force transmitting member.
Dependencies are inferred from the claim text.