DE940870C - Membrane switch for monitoring the pressure medium pressure in vehicle brake systems - Google Patents

Membrane switch for monitoring the pressure medium pressure in vehicle brake systems

Info

Publication number
DE940870C
DE940870C DET9087A DET0009087A DE940870C DE 940870 C DE940870 C DE 940870C DE T9087 A DET9087 A DE T9087A DE T0009087 A DET0009087 A DE T0009087A DE 940870 C DE940870 C DE 940870C
Authority
DE
Germany
Prior art keywords
pressure
membrane switch
monitoring
vehicle brake
brake systems
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
Application number
DET9087A
Other languages
German (de)
Inventor
Erich Tilch
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DET9087A priority Critical patent/DE940870C/en
Application granted granted Critical
Publication of DE940870C publication Critical patent/DE940870C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T17/00Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18Safety devices; Monitoring
    • B60T17/22Devices for monitoring or checking brake systems; Signal devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Description

Die Erfindung betrifft einen Membranschalter zur Überwachung des Druckmitteldruckes.'in Kraftfahrzeugbremsanlagen mit einer in einem. Hohlkörper angeordneten, mit einem zentrischen Stab versehenen, S gegen die Wirkung einer" Feder arbeitenden Membran, der sowohl beim Nachlassen des Druckes als auch beim Ansteigen des Druckes Warnsignale auslöst.The invention relates to a membrane switch for monitoring the pressure medium pressure in motor vehicle brake systems with one in one. Hollow body arranged, provided with a central rod, S against the action of a "spring working diaphragm, which both when the pressure is released and when An increase in pressure triggers warning signals.

Es ist bereits eine Bremskontrollvorrichtung bekannt, bei welcher innerhalb eines Gehäuses eine Membran mit zentrisch senkrecht angeordnetem Stab gegen eine Federwirkung eine Warnvorrichtung im Sichtkreis des Fahrers betätigt. Diese Einrichtung hat den Nachteil, daß die Warnorgane rein mechanische Bauart haben, so daß jeder Warnsignalgeber mit einem Membranmechanismus in mechanischer Verbindung stehen muß und dabei nur für eine Funktion verwendbar ist, nämlich die, das Sinken des Druckmitteldruckes anzuzeigen. Ein weiterer Nachteil ist der, daß bewegte Teile aus dem Gehäuse heraustreten, inA brake control device is already known in which a membrane with a centrally vertically arranged rod within a housing A warning device in the driver's field of vision is actuated against a spring action. This facility has the disadvantage that the warning organs have a purely mechanical design, so that each warning signal generator with one Membrane mechanism must be in mechanical connection and can only be used for one function is, namely to indicate the decrease in the pressure medium pressure. Another disadvantage is that moving parts emerge from the housing, in

ao welchem sie geführt sind, und durch Ansetzen von Schmutz und Oxyd sich festsetzen können, wodurch die Vorrichtung unwirksam wird.ao which they are guided, and through the accumulation of dirt and oxide can establish themselves, whereby the device becomes ineffective.

Bei der Vorrichtung gemäß der Erfindung fallen diese Nachteile weg, weil die Betätigung der Warnas organe in an sich bekannter Weise auf elektrischem Wege geschieht, wodurch nur ein Membranschalter für den Warnsignalgeber am Fahrersitz und für die Bremsleuchten an der Rückseite des Wagens erforderlich ist.In the device according to the invention, these disadvantages are eliminated because the actuation of the Warnas organs happens in a known manner by electrical means, whereby only a membrane switch required for the warning signal generator on the driver's seat and for the brake lights on the back of the car is.

Das Wesen der Erfindung besteht darin, daß ein an der Membran angebrachter Schaltstab mit zwei Kontaktscheiben versehen ist, in deren Zwischenraum das eine Ende zweier Kontaktstifte hineinragt, deren anderes Ende durch die Verschlußplatte des Hohlkörpers hindurchgeführt ist.The essence of the invention is that an attached to the membrane switching rod with two Contact disks is provided, in the space between which protrudes one end of two contact pins, whose other end through the closure plate of the hollow body is passed through.

Über den Inhalt-desAnspruchs, hinausgehende Teile der folgenden Beschreibung des Ausführungsbeispiels upd der Zeichnung dienen nur der Erläuterung und sind nicht Gegenstand der Erfindung.Parts going beyond the content of the claim the following description of the exemplary embodiment and the drawing are for explanation purposes only are not the subject of the invention.

In der Zeichnung wird ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung veranschaulicht; es zeigtIn the drawing, an embodiment of the device according to the invention is illustrated; it shows

Fig. ι einen senkrechten Schnitt durch den Membranschalter undFig. Ι a vertical section through the membrane switch and

Fig. 2 ein Schaltbild.Fig. 2 is a circuit diagram.

Der Membranschalter besteht aus einem Gehäuse a, in welchem eine Gummimembran b fest gelagert ist. Sie trägt einen axial angeordneten Stab c, auf dem mit einem gewissen Zwischenraum zwei zur Membran parallele Kontaktscheiben d und e befestigt sind. Die Kontaktscheibe e ist am freien Ende' des Stabes c befestigt. Auf sie wirkt eine Feder g, die sich auf .die Verschlußscheibe h stützt. Gegen die Kraft der Eedejrg ; wirkt die aus dem Druck auf die Membran b herrührende Kraft.The membrane switch consists of a housing a in which a rubber membrane b is firmly mounted. It carries an axially arranged rod c on which two contact disks d and e parallel to the membrane are attached with a certain gap. The contact disk e is attached to the free end 'of the rod c. A spring g acts on them, which is based on the closure disk h . Against the strength of the Eedejrg; the force resulting from the pressure on the diaphragm b acts.

Die Verschlußscheibe h trägt zwei Kontaktstifte fx, f. Die oberen · Enden dieser Stifte sind rechtwinklig abgebogen und ragen in den Zwischenraum der beiden Kontaktscheiben d und e.The closure disk h has two contact pins f x , f. The upper ends of these pins are bent at right angles and protrude into the space between the two contact disks d and e.

Die Feder g ist so bemessen, daß beim Anschluß des Druckmeihbranschälters an die Druckleitung einer hydraulischen Bremse, in welcher bei gelöster Bremse ein Druck von 1Z2 atü herrscht, die Kontaktscheibe e von den Kontaktstiften fx, f abgedrückt wird, wie Fig. ι zeigt. ·The spring g is dimensioned in such a way that when the Druckmeihbranschälters is connected to the pressure line of a hydraulic brake, in which there is a pressure of 1 Z 2 atm when the brake is released, the contact disc e is pressed off the contact pins f x , f , as shown in FIG shows. ·

Der Anschluß des Membranschalters an die elektrische Leitung für die Warnsignale ist in Fig. 2 gezeigt. Die Bremsleuchten sind mit Si L und die Fahrersitzlampe mit F L bezeichnet. Ist der Zündschalter 0 eingeschaltet, so ist bei Stellung der Kontaktscheiben d und & nach Fig. 1 der Stromkreis unterbrochen; die Warnlampen leuchten nicht. Läßt der Öldruck nach, so überwindet die Feder g die nachlassende Membrankraft. Der Stromkreis wird durch die Kontaktscheibe e geschlossen; alle Warnlampen leuchten, auf. Bei Druckerhöhung in der Ölleitung i, beispielsweise beim Niedertreten des Bremspedals, schließt die obere Kontaktscheibe d den Stromkreis, wobei ebenfalls alle Warnlampen aufleuchten.The connection of the membrane switch to the electrical line for the warning signals is shown in FIG. The brake lights are labeled with Si L and the driver's seat light with FL. If the ignition switch 0 is switched on, the circuit is interrupted when the contact disks d and & according to FIG. 1 are in position; the warning lights do not light up. If the oil pressure decreases, the spring g overcomes the decreasing diaphragm force. The circuit is closed by the contact disc e ; all warning lights come on. When the pressure in the oil line i increases, for example when the brake pedal is depressed, the upper contact disk d closes the circuit, and all the warning lamps also light up.

Durch diesen Membranschalter werden auf einfache Weise bei Normaldruck in der Druckmittelleitung die Warnsignalgeber ausgeschaltet und sowohl beim" Überschreiten als auch beim Unterschreiten des Normaldruckes eingeschaltet;-ferner wird eine erhöhte Verkehrssicherheit erreicht.With this membrane switch, the Warning signal transmitter switched off and both when the normal pressure is exceeded or not reached switched on; - furthermore, increased traffic safety is achieved.

Es ist noch zu bemerken, daß dem Fahrer während der Fahrt vom Fahrersitz aus jederzeit durch leichten Fußtritt auf das Bremspedal die Möglichkeit gegeben ist, die Sicherheitsanlage zu überprüfen..It should also be noted that the driver at any time while driving from the driver's seat by light Step on the brake pedal gives the opportunity to check the safety system ..

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Membranschalter zur Überwachung des Druckmitteldruckes in Kraftfahrzeugbremsanlagen mit einer in einem Hohlkörper angeordneten, mit einem zentrischen Stab versehenen, gegen die Wirkung einer Feder arbeitenden Membran, dadurch gekennzeichnet, daß der Stab (c) mit zwei Kontakt-" scheiben (d, e) versehen ist, in deren Zwischenraum das eine Ende zweier Kontaktstifte (f) hineinragt, deren anderes Ende durch die Verschlußplatte des Hohlkörpers (a) hindurchgeführt ist.Membrane switch for monitoring the pressure medium pressure in motor vehicle brake systems with a membrane arranged in a hollow body, provided with a central rod and working against the action of a spring, characterized in that the rod (c) is provided with two contact disks (d, e) , into the space between which one end of two contact pins (f ) protrudes, the other end of which is passed through the closure plate of the hollow body (a) .
DET9087A 1954-02-23 1954-02-24 Membrane switch for monitoring the pressure medium pressure in vehicle brake systems Expired DE940870C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET9087A DE940870C (en) 1954-02-23 1954-02-24 Membrane switch for monitoring the pressure medium pressure in vehicle brake systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1119501X 1954-02-23
DET9087A DE940870C (en) 1954-02-23 1954-02-24 Membrane switch for monitoring the pressure medium pressure in vehicle brake systems

Publications (1)

Publication Number Publication Date
DE940870C true DE940870C (en) 1956-03-29

Family

ID=25999191

Family Applications (1)

Application Number Title Priority Date Filing Date
DET9087A Expired DE940870C (en) 1954-02-23 1954-02-24 Membrane switch for monitoring the pressure medium pressure in vehicle brake systems

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DE (1) DE940870C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1059783B (en) * 1956-08-14 1959-06-18 Westinghouse Bremsen Gmbh Parking brake for motor vehicles operated by compressed air
DE1107100B (en) * 1957-04-06 1961-05-18 Alban Wack Device for displaying pressure changes in pressure medium brake systems, in particular in hydraulic brake systems for motor vehicles
DE1206743B (en) * 1959-11-23 1965-12-09 Henri Limoges Auxiliary braking device for vehicles, in particular for motor vehicles

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE465857C (en) * 1927-12-14 1928-09-26 Rudolf Kandt Safety device on hydraulic vehicle brakes, especially for motor vehicles
US1850626A (en) * 1929-09-16 1932-03-22 Westinghouse Air Brake Co Low pressure warning device
US2477725A (en) * 1946-06-01 1949-08-02 Robert C Dall Warning device
DE872743C (en) * 1951-10-25 1953-04-02 Knorr Bremse Gmbh Compressed air brake for trailer vehicles, especially motor vehicle trailers
DE916385C (en) * 1952-03-26 1954-08-09 Siegfried Henn Warning system for motor vehicles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE465857C (en) * 1927-12-14 1928-09-26 Rudolf Kandt Safety device on hydraulic vehicle brakes, especially for motor vehicles
US1850626A (en) * 1929-09-16 1932-03-22 Westinghouse Air Brake Co Low pressure warning device
US2477725A (en) * 1946-06-01 1949-08-02 Robert C Dall Warning device
DE872743C (en) * 1951-10-25 1953-04-02 Knorr Bremse Gmbh Compressed air brake for trailer vehicles, especially motor vehicle trailers
DE916385C (en) * 1952-03-26 1954-08-09 Siegfried Henn Warning system for motor vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1059783B (en) * 1956-08-14 1959-06-18 Westinghouse Bremsen Gmbh Parking brake for motor vehicles operated by compressed air
DE1107100B (en) * 1957-04-06 1961-05-18 Alban Wack Device for displaying pressure changes in pressure medium brake systems, in particular in hydraulic brake systems for motor vehicles
DE1206743B (en) * 1959-11-23 1965-12-09 Henri Limoges Auxiliary braking device for vehicles, in particular for motor vehicles

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