Patent ID: 6880680
Filing Date: 2005-04-19
Classification: B60T,F16D

Abstract:
1. An electrically actuatable disc brake comprising: a disc rotor; brake pads for engaging with said disc rotor; an electric motor having a rotor; a reduction mechanism for reducing a rotation of said rotor of said electric motor, and for generating a reduced rotation; a converting mechanism for converting the reduced rotation of said reduction mechanism to a linear motion, and for causing said brake pads to engage with said disc rotor so as to generate a braking force; wherein said reduction mechanism comprises wherein said eccentric shaft has a coaxial hollow space of a circular cross-section therein so that the hollow space extends into said rotor of said electric motor by a predetermined distance; and wherein the hollow space of said eccentric shaft extending into said rotor by the predetermined distance allows for mass added to said rotor by said eccentric shaft to be subtracted at an eccentric position of said rotor so as to achieve rotational balance for said rotor.