JPS6477768A - Hydraulic pump - Google Patents
Hydraulic pumpInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5426506A (en) * | 1977-08-01 | 1979-02-28 | Bertin & Cie | Sealing apparatus |
-
1987
- 1987-09-18 JP JP62234382A patent/JPS6477768A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5426506A (en) * | 1977-08-01 | 1979-02-28 | Bertin & Cie | Sealing apparatus |
Cited By (2)
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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