Title:
EXTENDABLE DRIVE APPARATUS AND OPENING/CLOSING MECHANISM
Document Type and Number:
WIPO Patent Application WO/2016/080478
Kind Code:
A1
Abstract:
An outer cylinder 7 is provided with a motor 13 in the interior. An inner cylinder 9 is provided inside the outer cylinder 7, has a sealed structure at the distal end, and moves relative to the outer cylinder 7 in the axial direction. Rotation of a screw 11 is driven by drive power from the motor 13. A guide nut 15 is driven by the screw 11, and moves in the direction of the axis of rotation of the screw 11. A coil spring 17 is arranged at the outside circumference of the screw 11, contacts the distal end of the inner cylinder 9, and imparts energizing force to the guide nut 15 in the direction of the axis of rotation. The screw 11, the guide nut 15, and the coil spring 17 are accommodated within an inside space 25 formed by the outer cylinder 7 and the inner cylinder 9. An intake/discharge port 29 for a fluid is provided at the distal end of the inner cylinder 9. Due to this structure, problems caused by infiltration of moisture into the extendable drive apparatus are reduced.
Inventors:
INAGAKI HIROYUKI (JP)
OSAFUNE HITOSHI (JP)
OSAFUNE HITOSHI (JP)
Application Number:
PCT/JP2015/082499
Publication Date:
May 26, 2016
Filing Date:
November 19, 2015
Export Citation:
Assignee:
HI LEX CORP (JP)
International Classes:
F16H25/24; E05F15/611; F16H25/20
Foreign References:
| JP2012512973A | 2012-06-07 | |||
| JP2007331699A | 2007-12-27 | |||
| JP2011106227A | 2011-06-02 | |||
| JP2009192081A | 2009-08-27 |
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