EP1150014A2 - Internal gear oil pump - Google Patents
Internal gear oil pump Download PDFInfo
- Publication number
- EP1150014A2 EP1150014A2 EP01102016A EP01102016A EP1150014A2 EP 1150014 A2 EP1150014 A2 EP 1150014A2 EP 01102016 A EP01102016 A EP 01102016A EP 01102016 A EP01102016 A EP 01102016A EP 1150014 A2 EP1150014 A2 EP 1150014A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- outer rotor
- oil pump
- internal
- toothing
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-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
- F04C2/102—Rotary-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
Definitions
- the invention relates to an oil pump according to the preamble of the claim 1.
- positive displacement pumps which essentially consist of an inner rotor with external teeth and an external rotor, the internal teeth meshes with the external toothing of the internal rotor.
- the center of the inner rotor is toothed by a certain eccentricity with respect to the center of the outer rotor.
- the two rotors are sealed on the front sides by a housing.
- the inner rotor is rotatably mounted in the housing by means of a shaft and is supported by a Gear rotatably connected to the shaft.
- the storage of the outer rotor takes place directly over its outer peripheral surface in the housing.
- the invention has for its object to shorten the length of the pump and make it easier to assemble.
- the gear wheel for driving the inner rotor saved.
- the inner rotor is freely rotatable in the housing by means of a shaft.
- Figure 1 shows the front view of the inner rotor 1 and outer rotor 2.
- the inner rotor 1 is with a wave-shaped external toothing 3 and the outer rotor 2 with a also wave-shaped internal toothing 4 which mesh with each other.
- the center points of the outer rotor 2 and inner rotor 1 are offset by the eccentricity e.
- the pump is driven directly via the outer rotor 2.
- the inner rotor 1 is freely rotatably mounted in the housing 6 by means of a shaft 5 (Fig. 2).
- the entrainment of the inner rotor 1 takes place via its external toothing 3 and the internal toothing 4 of the outer rotor 2.
- the outer rotor 2 can be driven by a ring gear 7 on the outer circumference of the outer rotor 2 is arranged.
- the ring gear 7 is in engagement with a pinion 7a, which is mounted in the housing 6 and which is from the internal combustion engine is driven.
- a pinion 7a which is mounted in the housing 6 and which is from the internal combustion engine is driven.
- the ring gear 7 is arranged on one side.
- the storage of the outer rotor 2 takes place on the remaining width, which is designed as a bearing surface 8.
- the inner rotor 1 is mounted by means of the shaft 5 in the housing 6, which seals the rotors 1, 2 surrounds.
- FIG. 3 shows another drive option.
- the ring gear 7 is arranged in the center.
- the remaining width of the outer rotor 2 is designed as a bearing surface 8a, 8b.
- FIG. 4 Another efficient drive and storage option is shown in FIG. 4.
- the Surfaces 9, which form the tip circle of the ring gear 7, serve directly the Storage in the surrounding housing 6. Special storage areas can be omitted because the entire width of the outer rotor 2 is used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Ölpumpe gemäß dem Gattungsbegriff des Patentanspruches
1.The invention relates to an oil pump according to the preamble of the
Für die Umwälzung des Öls bei der Umlaufschmierung von Brennkraftmaschinen ist es bekannt Verdrängerpumpen anzuwenden, welche im wesentlichen aus einem Innenrotor mit Außenverzahnung und einem Außenrotor bestehen, dessen Innenverzahnung mit der Außenverzahnung des Innenrotors kämmt. Der Mittelpunkt des Innenrotors ist um eine gewisse Exzentrizität gegenüber dem Mittelpunkt des Außenrotors verzahnt.For the circulation of the oil in the circulation lubrication of internal combustion engines it is known to use positive displacement pumps, which essentially consist of an inner rotor with external teeth and an external rotor, the internal teeth meshes with the external toothing of the internal rotor. The center of the inner rotor is toothed by a certain eccentricity with respect to the center of the outer rotor.
Die beiden Rotoren werden an den Stirnseiten dichtend von einem Gehäuse umgeben. Der Innenrotor ist mittels einer Welle im Gehäuse drehbar gelagert und wird durch ein drehfest mit der Welle verbundenen Zahnrad angetrieben. Die Lagerung des Außenrotors erfolgt direkt über seine äußere Umfangsfläche im Gehäuse. Ein Nachteil dieser Anordnung ist darin zu sehen, daß die Pumpe durch das Zahnrad länger baut und daß das Zahnrad ein zusätzliches Bauteil darstellt, welches in Fertigung und Montage zusätzliche Kosten verursacht.The two rotors are sealed on the front sides by a housing. The inner rotor is rotatably mounted in the housing by means of a shaft and is supported by a Gear rotatably connected to the shaft. The storage of the outer rotor takes place directly over its outer peripheral surface in the housing. One disadvantage of this Arrangement can be seen in the fact that the pump builds longer through the gear and that the gear represents an additional component, which in manufacturing and assembly additional Costs.
Der Erfindung liegt die Aufgabe zugrunde, die Pumpe in der Länge gesehen zu verkürzen und montagefreundlicher zu gestalten. The invention has for its object to shorten the length of the pump and make it easier to assemble.
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruches
1.This object is achieved by the characterizing features of the
Durch den Antrieb des Außenrotors wird das Zahnrad für den Antrieb des Innenrotors eingespart. Der Innenrotor ist mittels Welle frei drehbar im Gehäuse gelagert. Durch den Wegfall des Zahnrades für den Antrieb des Innenrotors wird die Baulänge der Pumpe um die Breite des Zahnrades verkürzt und die Montage wesentlich freundlicher gestaltet.By driving the outer rotor, the gear wheel for driving the inner rotor saved. The inner rotor is freely rotatable in the housing by means of a shaft. By the elimination of the gear wheel for driving the inner rotor becomes the overall length of the Pump shortened by the width of the gear wheel and assembly much friendlier designed.
Vorteilhafte Ausbildungen des Antriebs und der Lagerung des Außenrotors sind den
Ansprüchen 2 bis 5 zu entnehmen.Advantageous designs of the drive and the bearing of the outer rotor are the
Ausführungsbeispiele des Antriebes der Ölpumpe sind in Zeichnungen dargestellt. Es zeigt:
- Fig. 1
- eine stirnseitige Ansicht von Innen- und Außenrotor mit Ver- zahnung zum Antrieb des Außenrotors
- Fig. 2
- einen Halbschnitt II-II mit einseitigem Zahnkranz
- Fig. 3
- einen Halbschnitt II-II mit mittigem Zahnkranz
- Fig. 4
- einen Ausschnitt des Zahnkranzes bei dem die Flächen am Kopfkreis die Lagerflächen bilden
- Fig. 1
- an end view of the inner and outer rotor with teeth for driving the outer rotor
- Fig. 2
- a half-cut II-II with one-sided ring gear
- Fig. 3
- a half-cut II-II with a central ring gear
- Fig. 4
- a section of the ring gear in which the surfaces at the tip circle form the bearing surfaces
Figur 1 zeigt die stirnseitige Ansicht von Innenrotor 1 und Außenrotor 2. Der Innenrotor
1 ist mit einer wellenförmigen Außenverzahnung 3 und der Außenrotor 2 mit einer
ebenfalls wellenförmigen Innenverzahnung 4 versehen, welche miteinander kämmen.Figure 1 shows the front view of the
Die Mittelpunkte von Außenrotor 2 und Innenrotor 1 sind um die Exzentrizität e versetzt.The center points of the
Der Antrieb der Pumpe erfolgt erfindungsgemäß unmittelbarüber den Außenrotor 2.
Der Innenrotor 1 ist dabei mittels einer Welle 5 frei drehbar im Gehäuse 6 gelagert
( Fig. 2 ). Die Mitnahme des Innenrotors 1 erfolgt über dessen Außenverzahnung 3 und
die Innenverzahnung 4 des Außenrotors 2.According to the invention, the pump is driven directly via the
Der Antrieb des Außenrotors 2 kann durch einen Zahnkranz 7 erfolgen der auf dem
äußeren Umfang des Außenrotors 2 angeordnet ist. Der Zahnkranz 7 steht im Eingriff
mit einem Ritzel 7a, welches im Gehäuse 6 gelagert ist und welches von der Brennkraftmaschine
angetrieben wird. Beim Antrieb des Zahnkranzes 7 wird der Innenrotor
über die Innen- und Außenverzahnung 4, 3 mitgenommen. Durch die Vergrößerung
und Verkleinerung der Zahnlücken wird die erwünschte Saug- bzw. Pumpwirkung hervorgerufen.The
Nach Figur 2 ist der Zahnkranz 7 einseitig angeordnet. Die Lagerung des Außenrotors
2 erfolgt auf der Restbreite, welche als Lagerfläche 8 ausgebildet ist. Der Innenrotor 1
wird mittels der Welle 5 im Gehäuse 6 gelagert, welches die Rotoren 1, 2 dichtend
umgibt.According to Figure 2, the
Eine weitere Antriebsmöglichkeit zeigt Fig. 3. Der Zahnkranz 7 ist mittig angeordnet.
Die restliche Breite des Außenrotors 2 ist als Lagerfläche 8a, 8b ausgebildet.FIG. 3 shows another drive option. The
Eine weitere rationelle Antriebs- und Lagermöglichkeit ist in Figur 4 dargestellt. Die
Flächen 9, welche den Kopfkreis des Zahnkranzes 7 bilden, dienen unmittelbar der
Lagerung im umgebenden Gehäuse 6. Besondere Lagerflächen können entfallen, da die
gesamte Breite des Außenrotors 2 genützt wird.Another efficient drive and storage option is shown in FIG. 4. The
Surfaces 9, which form the tip circle of the
Durch den direkten Antrieb des Außenrotors 2 entfällt das Zahnrad für den Antrieb des
Innenrotors 1 ersatzlos. Die gesamte Pumpe baut folglich um die erforderliche Breite
dieses Zahnrades kürzer. Zudem entfällt die Befestigung dieses Zahnrades auf der
Welle 5 des Innenrotors, wodurch die Montage rationalisiert wird.The direct drive of the
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000120568 DE10020568A1 (en) | 2000-04-27 | 2000-04-27 | Oil pump for circulation lubrication of internal combustion engines |
DE10020568 | 2000-04-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1150014A2 true EP1150014A2 (en) | 2001-10-31 |
EP1150014A3 EP1150014A3 (en) | 2002-09-25 |
Family
ID=7640064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01102016A Withdrawn EP1150014A3 (en) | 2000-04-27 | 2001-01-30 | Internal gear oil pump |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1150014A3 (en) |
DE (1) | DE10020568A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006134337A1 (en) * | 2005-06-11 | 2006-12-21 | Concentric Vfp Ltd | A variable output pump |
WO2007128257A1 (en) * | 2006-05-06 | 2007-11-15 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Delivery device for a fluid |
EP4407182A1 (en) * | 2023-01-25 | 2024-07-31 | MS Motorservice International GmbH | Vehicle lubricant pump |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE669696C (en) * | 1939-01-02 | Ludwig Geb | Gear pump with internal meshing of the teeth | |
US3407741A (en) * | 1966-09-15 | 1968-10-29 | Caterpillar Tractor Co | Compact oil pump for internal combustion engines |
DE2547994A1 (en) * | 1975-10-27 | 1977-05-05 | Sperry Rand Corp | GEAR PUMP OR MOTOR |
JPS57183583A (en) * | 1981-05-08 | 1982-11-11 | Suzuki Motor Co Ltd | Trochoid pump |
EP0457490A1 (en) * | 1990-05-12 | 1991-11-21 | Concentric Pumps Limited | Gerotor pumps |
DE29710407U1 (en) * | 1996-11-12 | 1997-07-31 | Voith Turbo GmbH & Co. KG, 89522 Heidenheim | Internal gear pump with drive via the ring gear |
-
2000
- 2000-04-27 DE DE2000120568 patent/DE10020568A1/en not_active Withdrawn
-
2001
- 2001-01-30 EP EP01102016A patent/EP1150014A3/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE669696C (en) * | 1939-01-02 | Ludwig Geb | Gear pump with internal meshing of the teeth | |
US3407741A (en) * | 1966-09-15 | 1968-10-29 | Caterpillar Tractor Co | Compact oil pump for internal combustion engines |
DE2547994A1 (en) * | 1975-10-27 | 1977-05-05 | Sperry Rand Corp | GEAR PUMP OR MOTOR |
JPS57183583A (en) * | 1981-05-08 | 1982-11-11 | Suzuki Motor Co Ltd | Trochoid pump |
EP0457490A1 (en) * | 1990-05-12 | 1991-11-21 | Concentric Pumps Limited | Gerotor pumps |
DE29710407U1 (en) * | 1996-11-12 | 1997-07-31 | Voith Turbo GmbH & Co. KG, 89522 Heidenheim | Internal gear pump with drive via the ring gear |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 007, no. 029 (M-191), 5. Februar 1983 (1983-02-05) -& JP 57 183583 A (SUZUKI JIDOSHA KOGYO KK), 11. November 1982 (1982-11-11) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006134337A1 (en) * | 2005-06-11 | 2006-12-21 | Concentric Vfp Ltd | A variable output pump |
GB2430237A (en) * | 2005-06-11 | 2007-03-21 | Concentric Pumps Ltd | Variable output internal gear pump |
WO2007128257A1 (en) * | 2006-05-06 | 2007-11-15 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Delivery device for a fluid |
EP4407182A1 (en) * | 2023-01-25 | 2024-07-31 | MS Motorservice International GmbH | Vehicle lubricant pump |
Also Published As
Publication number | Publication date |
---|---|
DE10020568A1 (en) | 2001-10-31 |
EP1150014A3 (en) | 2002-09-25 |
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Effective date: 20020326 |