VALVE DEVICE - TAIHO KOGYO CO LTD

Title:

VALVE DEVICE

Document Type and Number:

WIPO Patent Application WO/2013/100052

Kind Code:

A1

Abstract:

A valve device (1) is provided with a poppet valve (5) which opens and closes a flow path (2). A thread (5d) is formed on the shaft (5a) of the poppet valve, and a drive gear (11) is engaged with the thread. The valve device (1) is configured so that the drive gear (11) is rotated by a motor (22) through a pinion (21) to move the poppet valve forward and backward, controlling the opening and closing of the flow path. The drive gear (11) is provided so that the drive gear (11) can, while being engaged with the pinion (21), move forward and backward in both the axial direction of the pinion and the axial direction of the poppet valve, and is normally retained at a predetermined non-operating position by a spring (pressing means)(13). As a result of this configuration, when the drive gear is further rotated even after the poppet valve is seated on the valve seat and the movement of the poppet valve is stopped, the drive gear is moved in the axial direction from the non-operating position against the pressing force of the spring (13) to thereby absorb an impact acting on the drive means or the like. The drive means or the like is prevented from being damaged by an impact load.

Inventors:

NAKAMURA KATSUMI (JP)
NAKANE KEISUKE (JP)
FUKAYA TAKUMI (JP)
SUGIURA KOJI (JP)

Application Number:

PCT/JP2012/083875

Publication Date:

July 04, 2013

Filing Date:

December 27, 2012

Export Citation:

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Assignee:

TAIHO KOGYO CO LTD (JP)

International Classes:

F16K31/53; F16K1/02; F16K31/04

Foreign References:

JP2009197765A	2009-09-03
JP2899394B2	1999-06-02
JP2009197765A	2009-09-03

Other References: