JPS64368A - Hydraulic pump - Google Patents

Hydraulic pump

Info

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
Application number
JP15265187A
Other languages
Japanese (ja)
Other versions
JPH01368A (en
Inventor
Yoshiki Ota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Tokico Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokico Ltd filed Critical Tokico Ltd
Priority to JP15265187A priority Critical patent/JPS64368A/en
Publication of JPH01368A publication Critical patent/JPH01368A/en
Publication of JPS64368A publication Critical patent/JPS64368A/en
Pending legal-status Critical Current

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
JP15265187A 1987-06-19 1987-06-19 Hydraulic pump Pending JPS64368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15265187A JPS64368A (en) 1987-06-19 1987-06-19 Hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15265187A JPS64368A (en) 1987-06-19 1987-06-19 Hydraulic pump

Publications (2)

Publication Number Publication Date
JPH01368A JPH01368A (en) 1989-01-05
JPS64368A true JPS64368A (en) 1989-01-05

Family

ID=15545082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15265187A Pending JPS64368A (en) 1987-06-19 1987-06-19 Hydraulic pump

Country Status (1)

Country Link
JP (1) JPS64368A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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