发明名称 |
Roller screw |
摘要 |
Provided is a roller screw capable of preventing rollers moving from an unloaded return path to a loaded roller rolling path from coming into collision with a scooping portion. The roller screw has: a screw shaft 1 having a spiral roller rolling surface 1a formed on an outer peripheral surface thereof; a nut 2 having a loaded roller rolling surface 2a formed in an inner peripheral surface thereof; a circulation member 3 having an unloaded return path connecting one end of the loaded roller rolling surface 2a of the nut 2 to an opposite end thereof; and a plurality of rollers 4 arranged in a loaded roller rolling path 6 and the unloaded return path. In the circulation member 3, as a scooping portion that juts toward the screw shaft 1 and provided for scooping the rollers 4 moving in the loaded roller rolling path 6 up into the unloaded return path, a pair of diagonal corresponding parts 14 is provided which are in contact with diagonal parts 4e of a rectangular side surface of each roller 4 and a width between which is gradually narrower as they are deeper in the unloaded return path in such a manner that a cross section of the unloaded return path is closer to a rectangle. |
申请公布号 |
US8336415(B2) |
申请公布日期 |
2012.12.25 |
申请号 |
US20080740924 |
申请日期 |
2008.10.29 |
申请人 |
MIYAHARA SOSHI;YOSHINO MASAHIKO;TENG LINA;TOGASHI TSUTOMU;SAKUYAMA TAKASHI;NISHIMURA KENTARO;MIURA TETSUYA;YOSHIDA AKIMASA;TODOROKI YUSUKE;THK CO., LTD. |
发明人 |
MIYAHARA SOSHI;YOSHINO MASAHIKO;TENG LINA;TOGASHI TSUTOMU;SAKUYAMA TAKASHI;NISHIMURA KENTARO;MIURA TETSUYA;YOSHIDA AKIMASA;TODOROKI YUSUKE |
分类号 |
F16H1/24;F16C29/06;F16H55/02 |
主分类号 |
F16H1/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|