JPS648369A - Reciprocating motion changeover device for pump - Google Patents
Reciprocating motion changeover device for pumpInfo
- Publication number
- JPS648369A JPS648369A JP16269687A JP16269687A JPS648369A JP S648369 A JPS648369 A JP S648369A JP 16269687 A JP16269687 A JP 16269687A JP 16269687 A JP16269687 A JP 16269687A JP S648369 A JPS648369 A JP S648369A
- Authority
- JP
- Japan
- Prior art keywords
- changeover
- operating
- spring
- discharge
- operating fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Reciprocating Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE:To reduce the number of parts, and to facilitate assembling work, and further to enhance durability, by making a spring, by which a changeover operating body changing over the supply and discharge of operating fluid is pressed in respective changeover positions on one side and on the other side, a special-shape wire spring. CONSTITUTION:In the inside of a changeover device body 41, a changeover mechanism part 44 by which the operating fluid to be alternately supplied to or discharge from either of two operating fluid chambers 42, 43 is changeover-controlled is provided. In the changeover mechanism part 44 an operating rod 45 is reciprocatatably inserted. In the operating rod 45, a sleeve-shaped changeover operating body 61 which is moved from the changeover position on one side to that on the other side in relation to the reciprocating motion is loosely fitted, and in the changeover operating body 61 valves 91, 92 and 94 for changing over the supply and discharge of operating fluid are provided. While the changeover operating body 61 is pressed in respective changeover positions by springs 71 which provide an elastic pressing force in the orthogonal directions at the neutral position, this spring 71 is made of a wire spring of nearly C-shaped form in which both ends of the wire rod is bent in the direction so as to face each other.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16269687A JPH0781551B2 (en) | 1987-06-30 | 1987-06-30 | Reciprocating motion switching device for pump |
PCT/JP1988/000512 WO1988009440A1 (en) | 1987-05-28 | 1988-05-27 | Reciprocation switching structure for pumps |
US07/306,454 US5002468A (en) | 1987-05-28 | 1988-05-27 | Switching device for reciprocating pumps |
DE3855779T DE3855779T2 (en) | 1987-05-28 | 1988-05-27 | Floating circuit structure for pump |
DE3855689T DE3855689T2 (en) | 1987-05-28 | 1988-05-27 | Floating circuit structure for pumps |
EP92202051A EP0509616B1 (en) | 1987-05-28 | 1988-05-27 | Switching device for reciprocating pumps |
DE88904643T DE3882949T2 (en) | 1987-05-28 | 1988-05-27 | FLOATING CIRCUIT STRUCTURE FOR PUMP. |
EP88904643A EP0321573B1 (en) | 1987-05-28 | 1988-05-27 | Reciprocation switching structure for pumps |
EP92202050A EP0508555B1 (en) | 1987-05-28 | 1988-05-27 | Switching device for reciprocating pumps |
US07/493,004 US5002469A (en) | 1987-05-28 | 1990-03-13 | Switching device for reciprocating pumps |
US07/547,913 US5120202A (en) | 1987-05-28 | 1990-07-03 | Switching device for reciprocating pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16269687A JPH0781551B2 (en) | 1987-06-30 | 1987-06-30 | Reciprocating motion switching device for pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS648369A true JPS648369A (en) | 1989-01-12 |
JPH0781551B2 JPH0781551B2 (en) | 1995-08-30 |
Family
ID=15759559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16269687A Expired - Lifetime JPH0781551B2 (en) | 1987-05-28 | 1987-06-30 | Reciprocating motion switching device for pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0781551B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2778698A1 (en) | 1998-05-14 | 1999-11-19 | Mitsubishi Electric Corp | FUEL INJECTION DEVICE |
WO2015178412A1 (en) * | 2014-05-23 | 2015-11-26 | 株式会社ワイ・テイ・エス | Valve device with detent member |
-
1987
- 1987-06-30 JP JP16269687A patent/JPH0781551B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2778698A1 (en) | 1998-05-14 | 1999-11-19 | Mitsubishi Electric Corp | FUEL INJECTION DEVICE |
WO2015178412A1 (en) * | 2014-05-23 | 2015-11-26 | 株式会社ワイ・テイ・エス | Valve device with detent member |
Also Published As
Publication number | Publication date |
---|---|
JPH0781551B2 (en) | 1995-08-30 |
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