JPS6183491A - Internal contact type gear pump - Google Patents

Internal contact type gear pump

Info

Publication number
JPS6183491A
JPS6183491A JP20466584A JP20466584A JPS6183491A JP S6183491 A JPS6183491 A JP S6183491A JP 20466584 A JP20466584 A JP 20466584A JP 20466584 A JP20466584 A JP 20466584A JP S6183491 A JPS6183491 A JP S6183491A
Authority
JP
Japan
Prior art keywords
groove
pressure
pulsation
fluctuation
space
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
Application number
JP20466584A
Other languages
Japanese (ja)
Other versions
JPH0526034B2 (en
Inventor
Masaharu Hayashi
Atsushi Satomoto
Takashi Nakagawa
Teiichirou Nakamura
Katsuaki Hosono
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.)
Mitsubishi Metal Corp
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Mitsubishi Metal Corp
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 Aisin Seiki Co Ltd, Mitsubishi Metal Corp filed Critical Aisin Seiki Co Ltd
Priority to JP59204665A priority Critical patent/JPH0526034B2/ja
Publication of JPS6183491A publication Critical patent/JPS6183491A/en
Publication of JPH0526034B2 publication Critical patent/JPH0526034B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes

Abstract

PURPOSE:To enable reduction of pulsation of discharge oil and the occurrence of a fluctuation in a pressure, by a method wherein a space, formed between contact parts of inner and outer rotors, is communicated with a groove formed in and open to the end surface of the inner rotor between tooth grooves having ends adjoining to each other. CONSTITUTION:A groove 3, circumferentially extended, is formed in the tooth foot part of the end surface of an outer rotor 2, and the ends of the groove 3 are respectively open to tooth grooves 2a located on both sides of the groove 3. Thus, pressure oil, present in a space S formed between contact parts of teeth 1a and 2A of the inner and outer rotors 1 and 2, is moved in other space S through the groove 3. In which case, the sectional area of the groove 3 is decided in consideration of a reduction in pulsation and a fluctuation in a pressure and lowering of pump efficiency. This constitution enables relieve of momentary high and low pressures, prevents the occurrence of pulsation and a fluctuation in a pressure of discharge oil, and permits sharp decrease of the generation of noise and vibration.
JP59204665A 1984-09-29 1984-09-29 Expired - Fee Related JPH0526034B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59204665A JPH0526034B2 (en) 1984-09-29 1984-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59204665A JPH0526034B2 (en) 1984-09-29 1984-09-29

Publications (2)

Publication Number Publication Date
JPS6183491A true JPS6183491A (en) 1986-04-28
JPH0526034B2 JPH0526034B2 (en) 1993-04-14

Family

ID=16494254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59204665A Expired - Fee Related JPH0526034B2 (en) 1984-09-29 1984-09-29

Country Status (1)

Country Link
JP (1) JPH0526034B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63212786A (en) * 1987-02-26 1988-09-05 Sumitomo Electric Ind Ltd Pump rotor
JPS63143779U (en) * 1987-03-12 1988-09-21
US5145347A (en) * 1990-06-30 1992-09-08 Concentric Pumps Limited Gerotor pump with blind-end groove on each lobe of the annulus
EP0686771A2 (en) * 1994-06-08 1995-12-13 J.M. Voith GmbH Internal gear pump with sealings incorporated in the teeth
US5711660A (en) * 1995-06-30 1998-01-27 Jatco Corporation Internal gear type rotary pump having a relief groove
KR20050038519A (en) * 2003-10-22 2005-04-27 현대자동차주식회사 Oil pump for automatic transmission

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130006A (en) * 1976-04-23 1977-11-01 Hitachi Ltd Gear pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130006A (en) * 1976-04-23 1977-11-01 Hitachi Ltd Gear pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63212786A (en) * 1987-02-26 1988-09-05 Sumitomo Electric Ind Ltd Pump rotor
JPS63143779U (en) * 1987-03-12 1988-09-21
JPH0430393Y2 (en) * 1987-03-12 1992-07-22
US5145347A (en) * 1990-06-30 1992-09-08 Concentric Pumps Limited Gerotor pump with blind-end groove on each lobe of the annulus
EP0686771A2 (en) * 1994-06-08 1995-12-13 J.M. Voith GmbH Internal gear pump with sealings incorporated in the teeth
US5711660A (en) * 1995-06-30 1998-01-27 Jatco Corporation Internal gear type rotary pump having a relief groove
KR20050038519A (en) * 2003-10-22 2005-04-27 현대자동차주식회사 Oil pump for automatic transmission

Also Published As

Publication number Publication date
JPH0526034B2 (en) 1993-04-14

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees