RACK - MOTOR DRIVEN POWER STEERING SYSTEM AND ASSEMBLING METHOD THEREOF

摘要

The present invention relates to a rack-motor driven power steering system (R-MDPS) is combined with a rack bar (3a) arranged to a length direction of a sub-frame by passing through the inner space of a housing block (12) combined with the sub-frame (10) and comprises a rack bar unit (3) including a bearing (3c) successively located inside the housing block (12), a ball screw nut (3b), and rack bar pulley (3d); a motor (2a) combined with a housing block (12) outside the housing block (12); a bolt fastened motor (2a); and a motor unit (2) including a belt (2c) connected to the rack bar pulley (3d) wrapped in the motor pulley (2b) of the motor (2a) located inside the housing block (12). The rack-motor driven power steering system has a characteristic in which the strength and hardness for an external force are improved by reducing the amount of components and by combining the system with the sub-frame (10). [Reference numerals] (AA) Steering column