DE19524921B4 - Vibration damper for damping fluid vibrations in a hydraulic, slip-controlled braking system of motor vehicles - Google Patents
Vibration damper for damping fluid vibrations in a hydraulic, slip-controlled braking system of motor vehicles Download PDFInfo
- Publication number
- DE19524921B4 DE19524921B4 DE1995124921 DE19524921A DE19524921B4 DE 19524921 B4 DE19524921 B4 DE 19524921B4 DE 1995124921 DE1995124921 DE 1995124921 DE 19524921 A DE19524921 A DE 19524921A DE 19524921 B4 DE19524921 B4 DE 19524921B4
- Authority
- DE
- Germany
- Prior art keywords
- vibration damper
- closure element
- collar
- head
- molded part
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
- B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
- B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
- B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
- B60T8/4872—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4068—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
- F16L55/052—Pneumatic reservoirs
- F16L55/053—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe
Abstract
Schwingungsdämpfer (10)
zur Dämpfung
von Flüssigkeitsschwingungen
in einem hydraulischen, schlupfgeregelten Bremssystem von Kraftfahrzeugen,
mit
den folgenden Merkmalen:
– der
Schwingungsdämpfer
(10) ist in einer Leitung (13, 14) zwischen einem Hauptbremszylinder
mit einem Vorratsbehälter
für Bremsflüssigkeit
und der Saugseite einer Hubkolbenpumpe angeordnet, mit der Bremsdruck
in wenigstens einem Radbremszylinder erzeugbar ist,
– der Schwingungsdämpfer (10)
weist eine in einer Bohrung (11) eines Gehäuses (12) angeordnete, randseitig
mit einem Verschlußelement
(21) der Bohrung dicht eingespannte Membrane (17) aus einem Elastomer
auf, welche auf ihrer einen Seite der Bremsflüssigkeit ausgesetzt ist und
mit ihrer anderen Seite einen Hohlraum (31) begrenzt, der mit der
Außenluft
in Verbindung steht,
gekennzeichnet durch die weiteren Merkmale:
– die Membrane
ist als hohlzylindrisches Formteil (17) mit einer Mantelwand (19)
und einem Boden (20) ausgebildet,
– die Mantelwand (19) des Formteils
(17) übergreift
mit radialem Abstand einen axial gerichteten Bund (23) des...Vibration dampers (10) for damping fluid vibrations in a hydraulic, slip-controlled braking system of motor vehicles,
with the following features:
- The vibration damper (10) is arranged in a line (13, 14) between a master cylinder with a reservoir for brake fluid and the suction side of a reciprocating pump, with the brake pressure in at least one wheel brake cylinder can be generated,
- The vibration damper (10) has a in a bore (11) of a housing (12) arranged on the edge with a closure element (21) of the bore tightly clamped membrane (17) made of an elastomer, which is exposed on one side of the brake fluid and bounded with its other side a cavity (31), which communicates with the outside air,
characterized by the further features:
- The membrane is formed as a hollow cylindrical molding (17) with a jacket wall (19) and a bottom (20),
- The mantle wall (19) of the molding (17) engages over an axially directed collar (23) of the radial distance from the ...
Description
Die Erfindung geht aus von einem Schwingungsdämpfer nach der Gattung des Patentanspruchs 1.The The invention is based on a vibration damper of the type of Patent claim 1.
Es
ist schon ein derartiger Schwingungsdämpfer mit einer kreisförmigen,
im wesentlichen ebenen Membrane bekannt (
Der Schwingungsdämpfer dient dazu, im Antriebsschlupfregelbetrieb durch den im Bremssystem verwendeten Pumpentyp verursachte Längsschwingungen der in der Saugleitung der Pumpe befindlichen Bremsflüssigkeit sowie Schwingkavitation zu vermeiden, damit von der Pumpe ein ausreichend großer Volumenstrom für einen schnellen Druckaufbau in Radbremszylindern gefördert werden kann. Außerdem wird mit dem Schwingungsdämpfer bezweckt, den in der Leitung zum Hauptbremszylinder auftretenden Druckstoß beim Beenden des Antriebsschlupfregelbetriebs zu mindern.Of the vibration is used in traction control mode by that used in the brake system Pump type caused longitudinal vibrations the brake fluid in the suction line of the pump and vibration cavitation to avoid, so that the pump is a sufficiently large volume flow for one rapid pressure build-up in wheel brake cylinders can be promoted. In addition, will with the vibration damper the purpose is to occur in the line to the master cylinder Pressure surge at Stop traction control operation.
Da außerdem bei einer fahrerbetätigten Bremsung der vom Hauptbremszylinder erzeugte Bremsdruck auch auf die Membrane des Schwingungsdämpfers wirkt, wird diese gegen den Deckel gepreßt, so daß die Gefahr einer Beschädigung der Membrane an der hohlraumseitigen Kante der zur Außenluft führenden Bohrung im Deckel zunimmt. Es muß jedoch unter allen Umständen vermieden werden, daß ein Bruch der Membrane zu einem Flüssigkeitsverlust und damit zu einem Ausfall des Bremssystems führt.There Furthermore in a driver-operated braking the brake pressure generated by the master cylinder also on the diaphragm of the vibration damper acts, this is pressed against the lid, so that the risk of damage to the membrane increases at the cavity-side edge leading to the outside air hole in the lid. It must, however under all circumstances be avoided that one Breakage of the membrane to a fluid loss and thus leads to a failure of the brake system.
Es
ist ferner aus
Vorteile der ErfindungAdvantages of invention
Der erfindungsgemäße Schwingungsdämpfer mit den kennzeichnenden Merkmalen des Patentanspruchs 1 hat demgegenüber den Vorteil, daß der zum Luftaustausch des Hohlraums mit der Außenluft erforderliche Durchgang auf einen Querschnitt relativ großer Länge, aber sehr geringer Breite, nämlich auf den Spalt zwischen dem Kopf des Stützkörpers und dem Bund des Verschlußelements verteilt ist. Die Membrane ist daher auch bei hohen Drücken vor der Gefahr des Abscherens am Spalt geschützt.Of the with vibration damper according to the invention the characterizing features of claim 1 has the other hand Advantage that the to Air exchange of the cavity with the outside air required passage to a cross-section of relatively large length but very small width, namely on the gap between the head of the support body and the collar of the closure element is distributed. The membrane is therefore also at high pressures the risk of shearing at the gap protected.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Patentanspruch 1 angegebenen Schwingungsdämpfers möglich.By in the subclaims listed activities are advantageous developments and improvements of the claim 1 specified vibration damper possible.
Mit der im Anspruch 2 gekennzeichneten Ausgestaltung des Schwingungsdämpfers ist auf einfache Weise eine bestimmte Breite des Spaltes gegeben.With The marked in claim 2 embodiment of the vibration is given in a simple manner a certain width of the gap.
Die im Anspruch 3 angegebene Maßnahme trägt dazu bei, die Membrane im Spaltbereich steifer als im übrigen Bereich des Hohlraums auszubilden, um sie zusätzlich vor dem Verformen in den Spalt zu schützen.The Measure specified in claim 3 contributes to this at, the membrane in the gap region stiffer than in the remaining area form the cavity, in addition to deformation before to protect the gap.
Auch durch die Weiterbildung des Schwingungsdämpfers nach Anspruch 4 wird zum einen die axiale Erstreckung des Hohlraums auf den umfangsseitigen Teil des von der Membrane umhüllten Verschlußelements und des Stützkörperkopfes begrenzt, zum anderen wird aufgrund der wulstförmigen Ausbildung der Vorsprünge ein abrupter, für die Membrane nicht beanspruchungsgerechter Übergang in den Hohlraum vermieden.Also by the development of the vibration damper according to claim 4 on the one hand, the axial extent of the cavity on the circumferential side Part of the membrane covered by the membrane closure element and the support body head limited, on the other hand, due to the bead-shaped formation of the projections a more abrupt, for the diaphragm not stressful transition into the cavity avoided.
Die Maßnahme nach Anspruch 5 begünstigt die Montage der in die Bohrung des Gehäuses zu fügenden Teile des Schwingungsdämpfers, weil diese zu einer Baugruppe vereinigbar sind.The measure according to claim 5 favors the Mounting the parts of the vibration damper to be joined in the bore of the housing, because these are unified to a module.
Zeichnungdrawing
Ein
Ausführungsbeispiel
der Erfindung ist in der Zeichnung vereinfacht dargestellt und in
der nachfolgenden Beschreibung näher
erläutert.
Es zeigen
Beschreibung des Ausführungsbeispielsdescription of the embodiment
Ein
in der Zeichnung dargestellter Schwingungsdämpfer
Der
Schwingungsdämpfer
In
der Durchgangsbohrung
Zwischen
der kopfseitigen Stirnseite
Der
Schwingungsdämpfer
Beim Betrieb der Hubkolbenpumpe zum
Zweck der Antriebsschlupfregelung können in den mit Bremsflüssigkeit
gefüllten
Leitungsabschnitten
When operating the reciprocating pump for the purpose of traction control can in the filled with brake fluid line sections
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995124921 DE19524921B4 (en) | 1995-07-08 | 1995-07-08 | Vibration damper for damping fluid vibrations in a hydraulic, slip-controlled braking system of motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995124921 DE19524921B4 (en) | 1995-07-08 | 1995-07-08 | Vibration damper for damping fluid vibrations in a hydraulic, slip-controlled braking system of motor vehicles |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19524921A1 DE19524921A1 (en) | 1997-01-09 |
DE19524921B4 true DE19524921B4 (en) | 2006-08-31 |
Family
ID=7766341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995124921 Expired - Fee Related DE19524921B4 (en) | 1995-07-08 | 1995-07-08 | Vibration damper for damping fluid vibrations in a hydraulic, slip-controlled braking system of motor vehicles |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19524921B4 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19701659A1 (en) * | 1997-01-18 | 1998-07-23 | Itt Mfg Enterprises Inc | Electronically controlled brake operating system for motor vehicle |
JP2000108189A (en) * | 1998-10-09 | 2000-04-18 | Husky Injection Molding Syst Ltd | Apparatus and method for attenuating vibration and hydraulic injection molding machine |
DE19856697C2 (en) * | 1998-12-09 | 2001-02-22 | Zahnradfabrik Friedrichshafen | Vibration damper for damping liquid vibrations in a hydraulic system |
DE19910100A1 (en) * | 1999-03-08 | 2000-09-14 | Continental Teves Ag & Co Ohg | Oscillation damper for use in hydraulic braking device for car, has membrane arranged around foam rubber compressible element |
DE10203517C1 (en) * | 2002-01-30 | 2003-10-02 | Daimler Chrysler Ag | Hydraulic servo braking system for automobile has oscillation damping device inserted in hydraulic circuit in front of hydraulic wheel brake operator |
DE10317854A1 (en) * | 2003-04-16 | 2004-11-04 | Volkswagen Ag | Accumulator for a hydraulic brake control device, comprises accumulator housing which is located in a pressurizing medium housing for the interior installation of the accumulator |
DE102005009658B4 (en) * | 2005-02-02 | 2014-05-22 | Continental Teves Ag & Co. Ohg | hydraulic power unit |
DE102012012971A1 (en) | 2012-06-29 | 2014-04-17 | Lucas Automotive Gmbh | Damping element for a motor vehicle hydraulic system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3810509A1 (en) * | 1987-04-07 | 1988-10-27 | Nobuyuki Sugimura | MEMORY, ESPECIALLY MEMBRANE MEMORY |
EP0539898A1 (en) * | 1991-10-30 | 1993-05-05 | Sumitomo Electric Industries, Limited | Brake fluid pressure control device |
DE4336464A1 (en) * | 1993-10-26 | 1995-04-27 | Bosch Gmbh Robert | Hydraulic brake system |
-
1995
- 1995-07-08 DE DE1995124921 patent/DE19524921B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3810509A1 (en) * | 1987-04-07 | 1988-10-27 | Nobuyuki Sugimura | MEMORY, ESPECIALLY MEMBRANE MEMORY |
EP0539898A1 (en) * | 1991-10-30 | 1993-05-05 | Sumitomo Electric Industries, Limited | Brake fluid pressure control device |
DE4336464A1 (en) * | 1993-10-26 | 1995-04-27 | Bosch Gmbh Robert | Hydraulic brake system |
Also Published As
Publication number | Publication date |
---|---|
DE19524921A1 (en) | 1997-01-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8125 | Change of the main classification |
Ipc: F15B 21/00 |
|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110201 |