Title:
電動弁における摺動抵抗の軽減装置
Document Type and Number:
Japanese Patent JP4968761
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent run-out of a valve rod, to decrease sliding resistance of the valve rod, and to reduce abrasion of a valve seat in a motor-operated valve in which the rotation of a stepping motor is converted to the axial operation by a screw mechanism to perform contact and separation of a valve to the valve seat. SOLUTION: In this motor-operated valve, the rotation of a motor M is converted to the axial operation by screw mechanisms 18, 19 to perform contact and separation of the valve element to the valve seat. The valve is provided with a valve main body 28 including the respective connecting parts to an inflow pipe 29a and an outflow pipe 29b formed at both end parts, and a member 37 having valve seats 28a, 28b and valves 38a, 38b, which is disposed in the interior thereof. The member 37 is formed as a member separate from a connecting rod 20 as a rotating shaft of the motor M, and the connecting rod is disposed concentrically with the member 37 and vertically movably. The member 37 supports a part of the rod rather closer to the upper end on a motor main body 25 through a bearing 60 to prevent run-out of the valve rod, decrease sliding resistance of the valve rod and reduce abrasion of the valve seat.
Inventors:
Hiroshi Uchida
Hideki Minamizawa
Omata Michio
Toru Sakamoto
Hideki Minamizawa
Omata Michio
Toru Sakamoto
Application Number:
JP2001146985A
Publication Date:
July 04, 2012
Filing Date:
May 16, 2001
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
F16K31/04; F25B1/00; F25B41/06; F25B41/04
Domestic Patent References:
| JP10002450A | ||||
| JP9097117A | ||||
| JP47021722A | ||||
| JP61161475U | ||||
| JP57194957U | ||||
| JP9119528A | ||||
| JP10292878A | ||||
| JP4134972U | ||||
| JP10159997A | ||||
| JP49006524U | ||||
| JP2001324043A |
Attorney, Agent or Firm:
Koichi Kusano