JPS6477768A - Hydraulic pump - Google Patents

Hydraulic pump

Info

Publication number
JPS6477768A
JPS6477768A JP62234382A JP23438287A JPS6477768A JP S6477768 A JPS6477768 A JP S6477768A JP 62234382 A JP62234382 A JP 62234382A JP 23438287 A JP23438287 A JP 23438287A JP S6477768 A JPS6477768 A JP S6477768A
Authority
JP
Japan
Prior art keywords
piston
chamber
pressure
pressure generating
reciprocated
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
JP62234382A
Other languages
Japanese (ja)
Inventor
Yukio Matsumoto
Hirotaka Oikawa
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.)
Tokico 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 JP62234382A priority Critical patent/JPS6477768A/en
Publication of JPS6477768A publication Critical patent/JPS6477768A/en
Pending legal-status Critical Current

Links

Landscapes

  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Regulating Braking Force (AREA)

Abstract

PURPOSE:To prevent air bubbles from being produced in a titled device wherein a piston is reciprocated with the rotation of an eccentric cam by providing a pressure compensation chamber connected to a pressure generating chamber and installing a piston in said compensation chamber with said piston being resiliently forced with a spring in the direction to reduce the total volume of said two chambers. CONSTITUTION:When an eccentric cam 15 is rotated cam 15 is rotated via a rotary shaft 13 with a motor, a piston 20 is reciprocated in the axial direction thereof. This causes a liquid drawn from a suction port 24 through a passage 25, suction chamber 23 and a ball valve 27 to a pressure generating chamber 22 is pressurized and the high pressure liquid is delivered through a ball valve 38 and a delivery port 36. In the hydraulic pump of this constitution, a pressure compensation chamber 29 is formed coaxially with the piston 32 at the bottom of a cylinder 18 in which a piston 32 is fitted. The piston 32 is resiliently forced with a spring 33 toward the pressure generating chamber 22 to absorb the increase and decrease in the volume of said chamber 22 and to prevent air bubbles from being produced as a result of the pressure in said chamber 22 becoming negative.
JP62234382A 1987-09-18 1987-09-18 Hydraulic pump Pending JPS6477768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62234382A JPS6477768A (en) 1987-09-18 1987-09-18 Hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62234382A JPS6477768A (en) 1987-09-18 1987-09-18 Hydraulic pump

Publications (1)

Publication Number Publication Date
JPS6477768A true JPS6477768A (en) 1989-03-23

Family

ID=16970124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62234382A Pending JPS6477768A (en) 1987-09-18 1987-09-18 Hydraulic pump

Country Status (1)

Country Link
JP (1) JPS6477768A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0327884U (en) * 1989-07-25 1991-03-20
JP2005240625A (en) * 2004-02-25 2005-09-08 Toyota Motor Corp Hydraulic pump

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5426506A (en) * 1977-08-01 1979-02-28 Bertin & Cie Sealing apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5426506A (en) * 1977-08-01 1979-02-28 Bertin & Cie Sealing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0327884U (en) * 1989-07-25 1991-03-20
JP2005240625A (en) * 2004-02-25 2005-09-08 Toyota Motor Corp Hydraulic pump

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