Title:
BALL-SCREW TYPE DRIVE DEVICE AND MOVABLE-BODY FLOATING UNIT
Document Type and Number:
WIPO Patent Application WO/2017/043277
Kind Code:
A1
Abstract:
This ball-screw type drive device has a connector (7) for axially connecting a nut member (3) and a movable body through a plurality of balls (71). The connector (7) has a rolling body arrangement groove (72) in which the plurality of balls (71) are arranged in the circumferential direction of a threaded shaft (2). The rolling body arrangement groove (72) is formed either in a non-circular shape when viewed in the axial direction or in a circular shape when viewed in the axial view, the center of the circular shape not coinciding with the axis (C) of the threaded shaft (2).
Inventors:
KISHI HIROYUKI (JP)
TOGASHI TSUTOMU (JP)
ISHIHARA AKIRA (JP)
TOGASHI TSUTOMU (JP)
ISHIHARA AKIRA (JP)
Application Number:
PCT/JP2016/074010
Publication Date:
March 16, 2017
Filing Date:
August 17, 2016
Export Citation:
Assignee:
THK CO LTD (JP)
International Classes:
F16H25/24; F16H25/22
Foreign References:
| JPS58109757A | 1983-06-30 | |||
| JP2016017535A | 2016-02-01 | |||
| JPH03277820A | 1991-12-09 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
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