| 摘要 |
PROBLEM TO BE SOLVED: To improve axial connecting accuracy, to secure high connecting strength while achieving miniaturization, and to reduce costs in a case where a drive shaft on an electric motor side and a worm gear are connected to each other, in a power steering device. SOLUTION: This power steering device 10 is formed by connecting a worm gear 42 to a drive shaft 53 on an electric motor 12 side. A fitting shaft part 71 having a fitting hole 71A to be connected by socket and spigot joint to a fitting shaft part 61 of the drive shaft 53 is provided on the worm gear 42, an engaging shaft part 72 having a slit 72 to be engaged with a width across flat part 62A of an engaging shaft part 62 of the drive shaft 53 is provided, and a fitting ring 82 to be fitted to the outer periphery of the engaging shaft part 72 (the slit 72A) of the worm gear 42 is provided. |
