Patent ID: 8863600
Filing Date: 2014-10-21
Classification: B62D,F16H,Y10T

Abstract:
1. A rack and pinion steering device comprising: a housing; a pinion shaft which is axially supported rotatably by the housing, and to one end of which a steering force of a steering wheel is transmitted; a pinion which is configured at another end of the pinion shaft; a rack which is brought in mesh with the pinion for transmitting the steering force to a side of a wheel; a large diameter shaft portion which is configured at one end of the pinion with a diameter thereof larger than a gear tooth root circle diameter of the pinion; a first bearing which is a ball bearing for axially supporting the large diameter shaft portion rotatably at the housing, the outer ring of the first bearing being inserted into a bearing hole and being fixed to the housing unmovably in an axial direction by a snap ring which is mounted to a ring-like groove on a side of an opening of the bearing hole; a small diameter shaft portion which is configured at another end of the pinion with a diameter thereof smaller than the gear tooth root circle diameter of the pinion; a second bearing which is a needle bearing for supporting the small diameter shaft portion rotatably at the housing; a first raised portion which is configured at a gear tooth root of the pinion on a side of the large diameter shaft portion; and a second raised portion which is configured at the gear tooth root of the pinion on a side of the small diameter shaft portion, wherein