Title:
BALL VALVE
Document Type and Number:
WIPO Patent Application WO/2018/043646
Kind Code:
A1
Abstract:
A ball valve (1) according to an embodiment of the present invention is provided with: a valve main body (11) having a valve chamber formed in a fluid flow path; and a ball valve body (14, 14a, 14b) in which a through hole is formed and which rotates inside the valve chamber so as to open and close the fluid flow path. In the valve main body (11), at least a part of the inner surface of the valve chamber is formed of a curved surface. A through hole (113) and a support portion (112) rotatably supporting the ball valve body (14, 14a, 14b) are formed at positions, on the rotation axis of the ball valve body (14, 14a, 14b), opposite to each other on the side wall of the valve chamber. A supported portion (141) supported by the support portion (112) and a fitting recessed portion (142) to which a transmission shaft for transmitting a rotation force is fitted through the through hole (113), are formed at positions, on the rotation axis, opposite to each other on the surface of the ball valve body (14, 14a, 14b).
Inventors:
MIYAWAKI SHOTARO (JP)
OHMAE HIROYUKI (JP)
OHMAE HIROYUKI (JP)
Application Number:
PCT/JP2017/031374
Publication Date:
March 08, 2018
Filing Date:
August 31, 2017
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
F16K5/06; F16K31/04
Foreign References:
| JP434759B1 | ||||
| JP2012002355A | 2012-01-05 | |||
| JPH09210225A | 1997-08-12 |
Attorney, Agent or Firm:
TORANOMON INTELLECTUAL PROPERTY FIRM (JP)
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