| 摘要 |
PROBLEM TO BE SOLVED: To provide a pinion shaft structure reducing collision sound between a pinion shaft and a rolling bearing, and a steering device.SOLUTION: A pinion shaft structure is equipped with a pinion shaft 10 formed with a pinion tooth 11 engaged with a rack tooth 111 of a rack shaft 110; a ball bearing 20 which rotatably supports an axial center side than the pinion tooth 11 in the pinion shaft 10; a rolling bearing 30 which rotatably supports a tip end portion 12 on the outer side in an axial direction than the pinion tooth 11 in the pinion shaft 10; and a first bush 41 which is disposed in a vertical row with the rolling bearing 30 in the axial direction, rotatably supports the tip end portion 12, and can be elastically deformed. The tip end portion 12 elastically deforms the first bush 41, and then collides with the rolling bearing 30.SELECTED DRAWING: Figure 2 |
