| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric power booster that achieves compactness particularly in an axial direction.SOLUTION: In an electric power booster 1, a detent part 39 that relatively unrotatably supports a screw shaft 47 (booster member) of a ball screw mechanism 41 is formed in a cylindrical part 8 of a rear cover 4B of a housing 4. A spring support part 77 that supports one end side of a counterforce spring 79 is integrally formed in the detent part 39. It is therefore possible to reduce an axial dimension than conventional ones, thereby downsizing the electric power booster 1. |
