Title:
HYDRAULIC CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2016/140162
Kind Code:
A1
Abstract:
A hydraulic control valve is configured so that: an electric motor (12), a ball-screw (21), and a spool valve (40) are arranged in tandem; and the rotation of the rotating shaft (12a) of the electric motor is converted into the axial movement of the spool (51) of the spool valve (40) by the ball-screw (21). The nut (24) of the ball-screw (21) is connected to the rotating shaft (12a) of the electric motor (12) and a threaded shaft (22) is provided integrally to an end of the spool (51), thereby reducing the axial length of the hydraulic control valve.
Inventors:
SHIMIZU TATSUNORI (JP)
Application Number:
PCT/JP2016/055830
Publication Date:
September 09, 2016
Filing Date:
February 26, 2016
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16K31/50; F16H25/20; F16H25/22; F16H25/24; F16K11/07; F16K31/04; F16H61/00
Domestic Patent References:
| WO2016017458A1 | 2016-02-04 |
Foreign References:
| JPS6458881A | 1989-03-06 | |||
| JP2000028023A | 2000-01-25 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
Naoya Kamata (JP)
Naoya Kamata (JP)
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