Title:
PROPULSION FORCE TRANSMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/112163
Kind Code:
A1
Abstract:
A propulsion force transmission device has a motor (40) as the drive source; a sun gear (42) rotatable by the motor (40); nut members (51) meshing with the sun gear (42) through external teeth (52a) on the outer peripheral surface of the nut member and each having a spiral nut-side screw groove formed in its inner peripheral surface; screw shafts (55) each having spiral screw-side screw groove (55a) that is formed in the outer peripheral surface of the screw shaft, corresponds to the nut-side screw groove, and is engaged with the nut side screw groove, and reciprocating with the rotation of the nut member (51); and an internally toothed gear (70) having internal teeth (70a) meshing with external teeth (52a) of the nut member (51). When the sun gear (42) is driven and rotated, the nut members (51) perform planetary motion inside the internally toothed gear (70) and the screw shafts (55) reciprocate axially. The propulsion force transmission device has high-speed, high-output characteristics.
Inventors:
MURATA TOMOZUMI (JP)
Application Number:
PCT/JP2006/303966
Publication Date:
October 26, 2006
Filing Date:
March 02, 2006
Export Citation:
Assignee:
THK CO LTD (JP)
MURATA TOMOZUMI (JP)
MURATA TOMOZUMI (JP)
International Classes:
F16H25/20; B29C45/17; B29C45/50; F16C19/10; F16H19/06; F16H25/24
Foreign References:
| JPS5769157A | 1982-04-27 | |||
| JPH01235621A | 1989-09-20 | |||
| JP2004098703A | 2004-04-02 |
Attorney, Agent or Firm:
Ishikawa, Yasuo (17-11 Shiba 2-chom, Minato-ku Tokyo 14, JP)
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