DE19524906A1 - Check valve for vacuum pump - spring strip opening limiter made from embossed or sheet stamped section and in stop region of spring strip has elongated hole - Google Patents
Check valve for vacuum pump - spring strip opening limiter made from embossed or sheet stamped section and in stop region of spring strip has elongated holeInfo
- Publication number
- DE19524906A1 DE19524906A1 DE1995124906 DE19524906A DE19524906A1 DE 19524906 A1 DE19524906 A1 DE 19524906A1 DE 1995124906 DE1995124906 DE 1995124906 DE 19524906 A DE19524906 A DE 19524906A DE 19524906 A1 DE19524906 A1 DE 19524906A1
- Authority
- DE
- Germany
- Prior art keywords
- spring strip
- check valve
- embossed
- vacuum pump
- opening limiter
- 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- Withdrawn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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
Die Erfindung betrifft ein Rückschlagventil für Vakuumpumpen nach dem Oberbegriff des Patentanspruchs 1 die z. B. für Bremshilfsanlagen von Kraftfahrzeugen benötigt werden zur Entleerung eines Vakuumbehälters. Hierbei wird die Vakuumpumpe von der Brennkraftmaschine des Fahrzeuges angetrieben und durch deren Schmier ölsystem mit Öl versorgt. Dieses Öl wird mit der geförderten Luft z. B. in das Brennkraftmaschinen-Kurbelgehäuse eingeleitet und somit wieder dem Schmier ölsystem zugeführt.The invention relates to a check valve for vacuum pumps according to the preamble of claim 1 the z. B. required for auxiliary braking systems of motor vehicles are used to empty a vacuum container. Here the vacuum pump from the internal combustion engine of the vehicle and driven by their lubrication Oil system supplied with oil. This oil is mixed with the extracted air e.g. B. in that Engine crankcase initiated and thus the lubrication again oil system supplied.
Um ein Rückschlagen des Kurbelgehäusedruckes in die Förderzelle der Vakuumpumpe zu verhindern, weist die Auslaßöffnung das erwähnte Rückschlagventil auf. Bei Pumpenanlauf nach abgestellter Brennkraftmaschine und mit Luft gefülltem bzw. teilgefülltem Vakuumbehälter, muß das Vakuum erst wieder aufgebaut werden, so daß in dem Auslaßkanal eine erhöhte Luftströmungsgeschwindigkeit entsteht, die in Verbindung mit Ölanteilen zu einer extremen Auslenkung des Rückschlagventils führt. Um einem Bruch des Ventils vorzubeugen, weist das Rückschlagventil einen die maximale Auslenkung begrenzenden Öffnungsbegrenzer auf, der aus einem Form- oder Blechstanzteil besteht.To knock back the crankcase pressure in the delivery cell of the vacuum pump to prevent, the outlet opening has the check valve mentioned. At Pump start-up after the internal combustion engine is switched off and air filled or partially filled vacuum container, the vacuum must first be re-established, see above that an increased air flow velocity arises in the outlet duct, which in Connection with oil components leads to extreme deflection of the check valve. In order to prevent the valve from breaking, the check valve has one opening deflector which limits maximum deflection and which or stamped sheet metal part.
Es hat sich nun in langen Versuchen gezeigt, daß dieses Form- oder Blechstanzteil bricht. Hiervon ausgehend liegt der Erfindung daher die Aufgabe zugrunde, Maßnah men aufzufinden, mit denen eine Dauerhaltbarkeit des Form- oder Blechstanzteils erreicht wird.It has now been shown in long tests that this molded or sheet metal stamped part breaks. Proceeding from this, the invention is therefore based on the object, measure men to find with which the durability of the molded or sheet metal stamped part is achieved.
Diese Aufgabe ist bei einem gattungsgemäßen Rückschlagventil durch die im Kennzeichen des Patentanspruchs angegebenen Merkmale gelöst.This task is in a generic check valve through the Characteristic of the features specified solved.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigtAn embodiment of the invention is shown in the drawing and will described below. This shows
Fig. 1 einen Schnitt durch ein erfindungsgemäßes Rücklagventil, Fig. 1 shows a section through an inventive Rücklagventil,
Fig. 2 eine Draufsicht des Rückschlagventils nach Fig. 1. FIG. 2 is a top view of the check valve of FIG. 1.
Fig. 1 zeigt einen Schnitt durch das Gehäuse 1 einer Vakuumpumpe 2 mit einer Förderkammer 3 mit einem Auslaßkanal 4, dessen Querschnitt durch ein Rück schlagventil 5 verschlossen ist. Das Rückschlagventil 5 besteht aus einem Feder stahlstreifen 6, der einseitig mittels einer Schraube 7 am Gehäuse 1 angeschraubt ist und anderseitig den Auslaßkanal 4 abdeckt. Mit der Schraube 7 ist gleichzeitig ein Form- oder Blechstanzteil 8 befestigt, das die Ausbringung des Federstreifens 6 begrenzt, d. h. einen Öffnungsbegrenzer bildet. Erfindungsgemäß ist nun vorgesehen, daß das Form- oder Blechstanzteil 8 eine langlochförmige Ausnehmung 9 aufweist, die aus der Fig. 2 erkennbar ist. Durch diese Ausnehmung 9 wird erreicht, daß bei Federstreifenausbiegungen und ölgefülltem Zwischenraum 10 zwischen Federstreifen 6 und Blechstanzteil 8 die hydraulisch wirkende Kraftübertragung auf das Form- oder Blechstanzteil 8 minimiert wird, da die Anschlagfläche durch die Ausnehmung 9 minimiert ist. Das zwischengelagerte Öl tritt bei der Federstreifenausbiegung in die Ausnehmung 9 ein, ohne Kraftübertragung. Fig. 1 shows a section through the housing 1 of a vacuum pump 2 with a delivery chamber 3 with an outlet channel 4 , the cross section of which is closed by a check valve 5 . The check valve 5 consists of a spring steel strip 6 , which is screwed on one side by means of a screw 7 to the housing 1 and covers the outlet channel 4 on the other side. With the screw 7 , a molded or sheet metal stamped part 8 is fastened at the same time, which limits the output of the spring strip 6 , ie forms an opening limiter. According to the invention, it is now provided that the molded or sheet metal stamped part 8 has an elongated hole-shaped recess 9 , which can be seen in FIG. 2. This recess 9 ensures that in the case of spring strip deflections and oil-filled space 10 between spring strips 6 and stamped sheet metal part 8, the hydraulically acting force transmission to the molded or stamped sheet metal part 8 is minimized, since the stop surface is minimized by the recess 9 . The intermediate oil enters the recess 9 during the spring strip deflection, without power transmission.
Mit dem erfindungsgemäßen Rückschlagventil 5 läßt sich die Lebensdauer einer Vakuumpumpe 2 erhöhen. Deren Einsatz in einem Kraftfahrzeug erhöht die Brems sicherheit.The service life of a vacuum pump 2 can be increased with the check valve 5 according to the invention. Their use in a motor vehicle increases braking safety.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995124906 DE19524906A1 (en) | 1995-07-08 | 1995-07-08 | Check valve for vacuum pump - spring strip opening limiter made from embossed or sheet stamped section and in stop region of spring strip has elongated hole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995124906 DE19524906A1 (en) | 1995-07-08 | 1995-07-08 | Check valve for vacuum pump - spring strip opening limiter made from embossed or sheet stamped section and in stop region of spring strip has elongated hole |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19524906A1 true DE19524906A1 (en) | 1997-01-09 |
Family
ID=7766330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995124906 Withdrawn DE19524906A1 (en) | 1995-07-08 | 1995-07-08 | Check valve for vacuum pump - spring strip opening limiter made from embossed or sheet stamped section and in stop region of spring strip has elongated hole |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19524906A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19803860C2 (en) * | 1997-02-07 | 2000-05-18 | Zexel Corp | Coolant compressor |
DE10023455C2 (en) * | 1999-05-22 | 2002-06-20 | Danfoss Compressors Gmbh | Pressure valve for a compressor |
DE10157234C1 (en) * | 2001-11-22 | 2003-07-17 | Knf Neuberger Gmbh | Oscillating displacer |
DE10357805B4 (en) * | 2003-07-28 | 2007-03-22 | Mitsubishi Denki K.K. | Outlet check valve for a vehicle vacuum pump |
CN106337795A (en) * | 2016-11-30 | 2017-01-18 | 合肥安信瑞德精密制造有限公司 | Compressor pollution discharge stopper |
DE102016202426A1 (en) | 2016-02-17 | 2017-08-17 | Mahle International Gmbh | Check valve for a vacuum pump |
DE102016207115A1 (en) | 2016-04-27 | 2017-11-02 | Mahle International Gmbh | Check valve for a vacuum pump |
EP3255278A1 (en) | 2016-06-08 | 2017-12-13 | Mahle International GmbH | Non-return valve for a vacuum pump |
CN111433457A (en) * | 2017-12-06 | 2020-07-17 | 克诺尔商用车制动***有限公司 | Reed type discharge valve |
-
1995
- 1995-07-08 DE DE1995124906 patent/DE19524906A1/en not_active Withdrawn
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19803860C2 (en) * | 1997-02-07 | 2000-05-18 | Zexel Corp | Coolant compressor |
DE10023455C2 (en) * | 1999-05-22 | 2002-06-20 | Danfoss Compressors Gmbh | Pressure valve for a compressor |
DE10157234C1 (en) * | 2001-11-22 | 2003-07-17 | Knf Neuberger Gmbh | Oscillating displacer |
DE10357805B4 (en) * | 2003-07-28 | 2007-03-22 | Mitsubishi Denki K.K. | Outlet check valve for a vehicle vacuum pump |
DE102016202426A1 (en) | 2016-02-17 | 2017-08-17 | Mahle International Gmbh | Check valve for a vacuum pump |
DE102016207115A1 (en) | 2016-04-27 | 2017-11-02 | Mahle International Gmbh | Check valve for a vacuum pump |
EP3255278A1 (en) | 2016-06-08 | 2017-12-13 | Mahle International GmbH | Non-return valve for a vacuum pump |
DE102016210102A1 (en) | 2016-06-08 | 2017-12-14 | Mahle International Gmbh | Check valve for a vacuum pump |
CN106337795A (en) * | 2016-11-30 | 2017-01-18 | 合肥安信瑞德精密制造有限公司 | Compressor pollution discharge stopper |
CN111433457A (en) * | 2017-12-06 | 2020-07-17 | 克诺尔商用车制动***有限公司 | Reed type discharge valve |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8130 | Withdrawal |