JPS64368A - Hydraulic pump - Google Patents
Hydraulic pumpInfo
- Publication number
- JPS64368A JPS64368A JP15265187A JP15265187A JPS64368A JP S64368 A JPS64368 A JP S64368A JP 15265187 A JP15265187 A JP 15265187A JP 15265187 A JP15265187 A JP 15265187A JP S64368 A JPS64368 A JP S64368A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- piston
- eccentric cam
- bearing
- outer ring
- 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.)
- Pending
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
PURPOSE: To expand the pressure receiving area without lengthening a pump shaft by movably coupling an outer ring with an eccentric cam driving a piston, forming a groove on the outer periphery of an outer ring, and bringing the piston into contact with the groove to restrict the movement of the outer ring.
CONSTITUTION: When a motor 11 is driven, an eccentric cam 18 is rotated together with a rotary shaft 11a, a piston 24 is pushed by a ring 21 via a bearing 20 and reciprocated, thus the volume of a pressure generating room is changed. In this case, the ring (outer ring) 21 inserted with the bearing 20 is slidably coupled with the outer periphery of the eccentric cam 18. A circular groove 22 or the like is formed on the outer periphery of the ring 21. The end section on the eccentric cam 18 side of the piston 24 is brought into contact with the circular groove 22 or the like. The movement of the ring 21 in the axial direction against the piston 24 is thereby restricted by the side wall 22a or the like of the circular groove 22. The length of the bearing 20 in the axial direction can be lengthened, and the pressure receiving area can be expanded.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-152651A JPH01368A (en) | 1987-06-19 | hydraulic pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-152651A JPH01368A (en) | 1987-06-19 | hydraulic pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64368A true JPS64368A (en) | 1989-01-05 |
JPH01368A JPH01368A (en) | 1989-01-05 |
Family
ID=
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4667805A (en) * | 1985-11-06 | 1987-05-26 | Westinghouse Electric Corp. | Robotic part presentation system |
US5181838A (en) * | 1990-06-04 | 1993-01-26 | Asmo Co., Ltd. | Vehicle washer pump |
US5577846A (en) * | 1992-03-30 | 1996-11-26 | Koyo Seiko, Co., Ltd. | Eccentric rolling bearing device |
JP2009057845A (en) * | 2007-08-30 | 2009-03-19 | Nsk Ltd | Plunger pump and radial needle bearing for plunger pump |
CN107747531A (en) * | 2017-04-25 | 2018-03-02 | 北京空天技术研究所 | A kind of two-dimentional piston oil transfer pump |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4667805A (en) * | 1985-11-06 | 1987-05-26 | Westinghouse Electric Corp. | Robotic part presentation system |
US5181838A (en) * | 1990-06-04 | 1993-01-26 | Asmo Co., Ltd. | Vehicle washer pump |
US5577846A (en) * | 1992-03-30 | 1996-11-26 | Koyo Seiko, Co., Ltd. | Eccentric rolling bearing device |
JP2009057845A (en) * | 2007-08-30 | 2009-03-19 | Nsk Ltd | Plunger pump and radial needle bearing for plunger pump |
CN107747531A (en) * | 2017-04-25 | 2018-03-02 | 北京空天技术研究所 | A kind of two-dimentional piston oil transfer pump |
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