Title:
ラック軸、ステアリング装置、及びラック軸の製造方法
Document Type and Number:
Japanese Patent JP7338252
Kind Code:
B2
Abstract:
To provide a rack shaft which can easily perform surface treatment of a guided part supported by a rack guide when a rack teeth is molded by forging, a manufacturing method for the rack shaft, and a steering device provided with the rack shaft.SOLUTION: A rack shaft of a forged product extending in a shaft direction of a shaft center includes: a rack teeth provided for one side on both sides having the shaft center in between and arranged along the shaft direction in the state that it is seen from the shaft direction; and a guided part which is provided for the other side of both sides having the shaft center in between and is guided by the rack guide. An inflation part inflating outside in a diameter direction of an arc having the shaft center as a center in the state that it is seen from the shaft direction. A first surface to be the surface of the rack teeth and a second surface to be the surface of the guided surface are blast treatment surfaces.SELECTED DRAWING: Figure 5
Inventors:
Takahiro Maniwa
Daisaku Kawada
Yasushi Watanabe
Takahiro Kojima
Daisaku Kawada
Yasushi Watanabe
Takahiro Kojima
Application Number:
JP2019108685A
Publication Date:
September 05, 2023
Filing Date:
June 11, 2019
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
B21K1/76; B62D3/12; B24C1/08; B24C3/32; F16H55/26
Domestic Patent References:
| JP2008114741A | ||||
| JP2005125972A | ||||
| JP2019076905A | ||||
| JP2014151833A | ||||
| JP2018024901A | ||||
| JP2018047473A | ||||
| JP2001353661A | ||||
| JP11347944A | ||||
| JP2014043929A |
Attorney, Agent or Firm:
Sakai International Patent Office