DE3439734A1 - MEMBRANE PLATE FOR VACUUM BRAKING AMPLIFIERS - Google Patents

MEMBRANE PLATE FOR VACUUM BRAKING AMPLIFIERS

Info

Publication number
DE3439734A1
DE3439734A1 DE19843439734 DE3439734A DE3439734A1 DE 3439734 A1 DE3439734 A1 DE 3439734A1 DE 19843439734 DE19843439734 DE 19843439734 DE 3439734 A DE3439734 A DE 3439734A DE 3439734 A1 DE3439734 A1 DE 3439734A1
Authority
DE
Germany
Prior art keywords
diaphragm plate
bead
brake booster
vacuum brake
vacuum
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.)
Ceased
Application number
DE19843439734
Other languages
German (de)
Inventor
Rüdiger Dipl.-Ing. 8603 Ebern Eckhart
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.)
IHO Holding GmbH and Co KG
Original Assignee
FAG Kugelfischer Georg Schaefer KGaA
Kugelfischer Georg Schaefer and Co
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 FAG Kugelfischer Georg Schaefer KGaA, Kugelfischer Georg Schaefer and Co filed Critical FAG Kugelfischer Georg Schaefer KGaA
Priority to DE19843439734 priority Critical patent/DE3439734A1/en
Priority to FR8515251A priority patent/FR2572346A1/en
Priority to GB08526713A priority patent/GB2166840A/en
Publication of DE3439734A1 publication Critical patent/DE3439734A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/02—Diaphragms
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/569—Vacuum systems indirect, i.e. vacuum booster units characterised by piston details, e.g. construction, mounting of diaphragm

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Systems And Boosters (AREA)

Description

FAG Kugelfischer Georg Schäfer R-RS-1-794-re-st Kommanditgesellschaft auf Aktien 23.10.1984FAG Kugelfischer Georg Schäfer R-RS-1-794-re-st Limited partnership based on shares October 23, 1984

Membranteller für UnterdruckbremskraftverstärkerDiaphragm plate for vacuum brake booster

Die Erfindung betrifft einen Membranteller für Unterdruckbremskraftverstärker, wie sie in hydraulischen Bremsanlagen, beispielsweise an Fahrzeugen Verwendung finden.The invention relates to a diaphragm plate for vacuum brake booster, as they are used in hydraulic braking systems, for example on vehicles.

Es sind Membranteller für Bremskraftverstärker unterschiedlicher Formgebung bekannt. Beispielsweise gezeigt in der DE-OS 30 31 206 oder in der DE-OS 31 08 Um ausreichende Wechselfestigkeit des Bauteils Membranteller zu gewährleisten, sind bisher in dem Bereich der größten Materialbeanspruchung - dem Übergang vom zylindrischen Zentrierteil in die zu ihm senkrecht stehende Druckfläche - mehr oder weniger große Radien angelegt worden, die den bei Kraftbeaufschlagung wirksam werdenden Biegespannungen ein entsprechendes Widerstandsmoment entgegensetzen können. Wegen der auftretenden Biegemomente mußte der Membranteller stärker und somit schwerer ausgebildet sein, als es die primär vorhandenen Zugspannungen erforderten.There are known diaphragm plates for brake boosters of different shapes. For example shown in DE-OS 30 31 206 or in DE-OS 31 08 To have sufficient fatigue strength of the membrane plate component have to be ensured so far in the area of greatest material stress - the transition from cylindrical centering part in the pressure surface that is perpendicular to it - more or less large radii has been applied, which corresponds to the bending stresses that become effective when a force is applied Can oppose the moment of resistance. Because of the bending moments that occur, the diaphragm plate had to be made stronger and therefore heavier than the primary tensile stresses required.

Dieser Erfindung liegt die Aufgabe zugrunde, einen Membranteller zu schaffen, der bei möglichst geringem Gewicht die an ihn gestellten statischen und dynamischen Festigkeitsansprüche erfüllt. Diese Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst. Eine vorteilhafte Ausgestaltung ergibt sich nach Anspruch 2.This invention is based on the object of creating a diaphragm plate which, with as little as possible Weight meets the static and dynamic strength requirements placed on it. These The object is achieved by the features specified in claim 1. An advantageous embodiment arises according to claim 2.

Fig. 1 zeigt die schematische Darstellung des Unterdruckbremskraft VerstärkersFig. 1 shows the schematic representation of the vacuum braking force Amplifier

Fig. 2 zeigt einen ausgeführten Membranteller Fig. 3 zeigt eine weitere Ausführung des MembrantellersFig. 2 shows an executed diaphragm plate. Fig. 3 shows a further embodiment of the diaphragm plate

Der Membranteller 1 ist verschiebbar in einem Unterdruckgehäuse angeordnet, das sich aus zwei dichtend miteinander verbundenen Gehäuseschalen 2, 3 zusammensetzt. An dem Membranteller 1 ist eine Membrane 4 dichtend angeordnet, so daß das Gehäuse in eine Unterdruckkammer I und eine Arbeitskammer II geteilt ist. Wird mittels des Bremspedals 14 die Druckstange 5 nach - in der Zeichnung - links verschoben, bewegt sich auch der Steuerkolben 6 in diese Richtung. Gleichzeitig kann Außenluft in den Arbeitsraum II strömen und aufgrund der Druckdifferenz zwischen dem unter Unterdruck stehenden Unterdruckraum I und dem Arbeitsraum II wird der Membranteller 1 gegen eine Feder 7 nach links verschoben, und betätigt über eine Kolbenstange 8 den oder die Kolben des hier nicht dargestellten Hauptbremszylinders.The diaphragm plate 1 is displaceable in a vacuum housing arranged, which is composed of two housing shells 2, 3 connected to one another in a sealing manner. On the diaphragm plate 1, a membrane 4 is sealingly arranged so that the housing in a Vacuum chamber I and a working chamber II is divided. Is by means of the brake pedal 14 the Push rod 5 moved to the left - in the drawing - the control piston 6 also moves in this direction. At the same time, outside air can flow into work space II and due to the Pressure difference between the negative pressure chamber I, which is under negative pressure, and the working chamber II, the diaphragm plate 1 is moved to the left against a spring 7, and actuated via a Piston rod 8 the piston or pistons of the master cylinder, not shown here.

In Fig. 2 ist der erfindungsgemäße Membranteller alleine gezeigt.In Fig. 2 is the diaphragm plate according to the invention shown alone.

An den zylindrischen Zentrierteil 9 schließen sich zwei gegensinnig angeordnete Kegelabschnitte 10, 11 derart an, daß ihr Schnittpunkt C über die Bördelkante D in den Unterdruckraum I hineinragt.Two cone sections 10, 11 arranged in opposite directions close to the cylindrical centering part 9 in such a way that its point of intersection C protrudes over the flanged edge D into the vacuum chamber I.

Um neben der, durch die Vergrößerung der Oberfläche, herabgesetzte Materialspannung auch noch die lebensdauerverkürzenden Biegespannungen bzw. -momente im Bereich des geringsten Kraftübertragungsquerschnitts - der der Mittelachse nächstgelegene Bereich - zu vermeiden, werden die einzelnen übergänge durch bewußt kleine Radien 12 hergestellt. Durch die somit fast scharfkantigen Winkel können sich im gefährdeten Bereich keine schädlichen Biegespannungen ausbilden und es treten hier fast ausschließlich relativ unschädliche Zugspannungen auf, die es gestatten, wie eine Reihe von Versuchen gezeigt hat, die Materialstärke bei gleichzeitiger Lebensdauererhöhung um mehrIn addition to the material tension that is reduced due to the enlargement of the surface area, there is also the life-shortening Bending stresses or moments in the area of the smallest power transmission cross-section - to avoid the area closest to the central axis, the individual transitions become conscious small radii 12 made. Due to the almost sharp-edged angles, the endangered The area does not develop any harmful bending stresses and it occurs almost exclusively in a relative manner harmless tensile stresses, which, as a number of tests have shown, allow the material thickness while increasing the service life by more

als ein Drittel zu reduzieren.reduce than a third.

In Fig. 3 ist eine weitere Ausführung des Membrantellers gezeigt. Dieselben physikalischen Eigenschaften werden hierbei durch die umgekehrte Anordnung des Wulstes (13a) erreicht.In Fig. 3, a further embodiment of the diaphragm plate is shown. Same physical properties are achieved here by the reverse arrangement of the bead (13a).

- Leerseite -- blank page -

Claims (4)

FAG Kugelfischer Georg Schäfer R-RS-1-794-re-st Kommanditgesellschaft auf Aktien 23.10.1984 AnsprücheFAG Kugelfischer Georg Schäfer R-RS-1-794-re-st Limited partnership based on shares 10/23/1984 claims 1. Membranteller für Unterdruckbremskraftverstärker dadurch gekennzeichnet, daß sich an den zylindrischen Zentrierteil (9) des Membrantellers ein nach außen gerichteter scharfkantiger Wulst (13) anschließt, wobei der Wulst (13) durch zwei gegensinnige Kegelabschnitte (10, 11) derart ausgebildet ist, daß die gedachte Kegelspitze (A) des inneren Kegelabschnitts (10) auf der druckhöheren Seite (II), die gedachte Kegelspitze (B) des äußeren Kegelabschnittes (11) auf der Unterdruckseite (I) des Unterdruckbremskraftverstärkers liegt.1. Diaphragm plate for vacuum brake booster, characterized in that the cylindrical centering part (9) of the diaphragm plate is followed by an outwardly directed sharp-edged bead (13), the bead (13) being formed by two opposing conical sections (10, 11) such that the imaginary cone tip (A) of the inner cone section (10) on the higher pressure side (II), the imaginary cone tip (B) of the outer cone section (11) on the vacuum side (I) of the vacuum brake booster. 2. Membranteller für Unterdruckbremskraftverstärker dadurch gekennzeichnet, daß sich an den zylindrischen Zentrierteil (9) des Membrantellers ein nach innen gerichteter Wulst (13a) anschließt, wobei der Wulst (13a) durch zwei gegensinnige Kegelabschnitte (10a, 11a) derart ausgebildet ist, daß die gedachte Kegelspitze (AA) des inneren Kegelabschnitts (10a) auf der Unterdruckseite (I), die gedachte Kegelspitze (BB) des äußeren Kegelab-Schnitts (11a) auf der druckhöheren Seite (II) -liegt.2. Diaphragm plate for vacuum brake booster, characterized in that the cylindrical centering part (9) of the diaphragm plate is followed by an inwardly directed bead (13a), the bead (13a) being formed by two opposing cone sections (10a, 11a) such that the imaginary cone tip (AA) of the inner cone section (10a) on the negative pressure side (I), the imaginary cone tip (BB) of the outer cone section (11a) on the higher pressure side (II). 3. Membranteller für Unterdruckbremskraftverstärker nach Anspruch 1 dadurch gekennzeichnet, daß die Erhebung (C) des scharfkantigen Wulstes (13) über die Bördelkante (D) hervorsteht.3. Diaphragm plate for vacuum brake booster according to claim 1, characterized in that the elevation (C) of the sharp-edged bead (13) protrudes over the flanged edge (D). 4. Membranteller für Unterdruckbremskraftverstärker nach Anspruch 1 dadurch gekennzeichnet, daß die Bördelkante (D) über die Erhebung (C) des scharfkantigen Wulstes (13) hervorsteht.4. Diaphragm plate for vacuum brake booster according to claim 1, characterized in that the flanged edge (D) protrudes over the elevation (C) of the sharp-edged bead (13).
DE19843439734 1984-10-31 1984-10-31 MEMBRANE PLATE FOR VACUUM BRAKING AMPLIFIERS Ceased DE3439734A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19843439734 DE3439734A1 (en) 1984-10-31 1984-10-31 MEMBRANE PLATE FOR VACUUM BRAKING AMPLIFIERS
FR8515251A FR2572346A1 (en) 1984-10-31 1985-10-15 MEMBRANE PLATE FOR SERVO BRAKE WITH LOW PRESSURE
GB08526713A GB2166840A (en) 1984-10-31 1985-10-30 A diaphragm disc for a vacuum brake power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843439734 DE3439734A1 (en) 1984-10-31 1984-10-31 MEMBRANE PLATE FOR VACUUM BRAKING AMPLIFIERS

Publications (1)

Publication Number Publication Date
DE3439734A1 true DE3439734A1 (en) 1986-04-30

Family

ID=6249134

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843439734 Ceased DE3439734A1 (en) 1984-10-31 1984-10-31 MEMBRANE PLATE FOR VACUUM BRAKING AMPLIFIERS

Country Status (3)

Country Link
DE (1) DE3439734A1 (en)
FR (1) FR2572346A1 (en)
GB (1) GB2166840A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946234C1 (en) * 1999-09-27 2001-01-25 Labom Mes Und Regeltechnik Gmb Pressure sensor membrane has central region coupled to tensioning edge via several concentric annular zones offset in alternating radial directions relative to membrane plane

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3705060C1 (en) * 1987-02-18 1988-03-03 Alfmeier Walter Gmbh & Co Vacuum distribution box
EP1439991B1 (en) 2001-10-29 2007-03-07 Hutchinson Device constituting a mobile and sealing partition, in particular for a motor vehicle braking circuit brake booster, and brake booster equipped therewith
JP6123272B2 (en) * 2012-03-30 2017-05-10 株式会社ジェイ・エム・エス In-circuit pressure measurement sensor unit and in-circuit pressure measurement diaphragm

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029911A1 (en) * 1980-08-07 1982-03-11 Alfred Teves Gmbh, 6000 Frankfurt BRAKE POWER AMPLIFIER FOR MOTOR VEHICLES
DE3402962A1 (en) * 1984-01-28 1985-08-01 Alfred Teves Gmbh, 6000 Frankfurt Vacuum brake booster

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271670A (en) * 1979-08-02 1981-06-09 Aisin Seiki Kabushiki Kaisha Power assist mechanism
JPS56127048U (en) * 1980-02-27 1981-09-28
GB2078885B (en) * 1980-05-26 1983-12-21 Toyota Motor Co Ltd Brake booster
ZA813078B (en) * 1980-06-05 1982-05-26 Automotive Prod Co Ltd Improvements relating to servomotor casings
US4387626A (en) * 1981-03-09 1983-06-14 The Bendix Corporation Tandem brake booster
JPS5992243A (en) * 1982-11-17 1984-05-28 Jidosha Kiki Co Ltd Booster for braking force
DE3303577A1 (en) * 1983-02-03 1984-08-09 Alfred Teves Gmbh, 6000 Frankfurt BRAKE POWER AMPLIFIER FOR A MOTOR VEHICLE
JPS6030871U (en) * 1983-08-08 1985-03-02 アイシン精機株式会社 Negative pressure booster

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029911A1 (en) * 1980-08-07 1982-03-11 Alfred Teves Gmbh, 6000 Frankfurt BRAKE POWER AMPLIFIER FOR MOTOR VEHICLES
DE3402962A1 (en) * 1984-01-28 1985-08-01 Alfred Teves Gmbh, 6000 Frankfurt Vacuum brake booster

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946234C1 (en) * 1999-09-27 2001-01-25 Labom Mes Und Regeltechnik Gmb Pressure sensor membrane has central region coupled to tensioning edge via several concentric annular zones offset in alternating radial directions relative to membrane plane

Also Published As

Publication number Publication date
GB8526713D0 (en) 1985-12-04
GB2166840A (en) 1986-05-14
FR2572346A1 (en) 1986-05-02

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: B60T 13/24

8131 Rejection