公开(公告)号：US09707991B2

公开(公告)日：2017-07-18

申请号：US14981091

申请日：2015-12-28

申请人： JTEKT CORPORATION ,  KOYO MACHINE INDUSTRIES CO., LTD.

发明人： Futoshi Kamimura ,  Kiyoshi Iwase ,  Mitsuharu Ozaki ,  Daiki Yano ,  Kazuhide Honda ,  Yasutaka Fukumoto ,  Osamu Honda ,  Naoki Fujimoto ,  Takashi Maeda

IPC分类号： B62D1/20 ,  B62D1/16 ,  F16C3/035 ,  F16C29/04 ,  F16D3/06

CPC分类号： B62D1/20 ,  B62D1/16 ,  F16C3/035 ,  F16C29/04 ,  F16C2326/24 ,  F16D3/065

摘要： A telescopic shaft includes: an inner shaft where a pair of recessed grooves that face each other in a direction perpendicular to an axis and extend in an axial direction are formed; an outer shaft where a pair of recessed grooves that face each other in the direction perpendicular to the axis and extend in the axial direction are formed; a plurality of rolling bodies that are disposed between each of the recessed grooves and the corresponding recessed groove so as to form a line in the axial direction; a pair of stoppers; and a buffer body unit. Each of the stoppers restricts falling of a rolling body at an end portion of the corresponding line from the corresponding recessed groove of the inner shaft. The buffer body unit integrally includes a pair of buffer bodies, and a connection portion that connects the pair of buffer bodies.