DE813498C - Electrical control device for the brake fluid level in the reservoir of hydraulic brakes on motor vehicles - Google Patents

Electrical control device for the brake fluid level in the reservoir of hydraulic brakes on motor vehicles

Info

Publication number
DE813498C
DE813498C DEP55478A DEP0055478A DE813498C DE 813498 C DE813498 C DE 813498C DE P55478 A DEP55478 A DE P55478A DE P0055478 A DEP0055478 A DE P0055478A DE 813498 C DE813498 C DE 813498C
Authority
DE
Germany
Prior art keywords
brake fluid
reservoir
control device
electrical control
motor vehicles
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
DEP55478A
Other languages
German (de)
Inventor
Egon Senger
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 DEP55478A priority Critical patent/DE813498C/en
Application granted granted Critical
Publication of DE813498C publication Critical patent/DE813498C/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
    • B60T17/225Devices for monitoring or checking brake systems; Signal devices brake fluid level indicators
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/56Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements
    • G01F23/60Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Description

Immer wieder versagen durch Bremsflüssigkeitsverluste an Bremszylindermanschetten, Leitungen und Vorratsbehältern die hydraulischen Bremsen von Kraftfahrzeugen. Oft führen diese Vorkommnisse zu Verkehrsunfällen leichter und schwerer Art. Brake cylinder sleeves fail again and again due to loss of brake fluid, Lines and reservoirs for the hydraulic brakes of motor vehicles. Often these incidents lead to traffic accidents, both light and severe.

Das plötzliche Versagen der hydraulischen Bremse tritt dann ein, wenn der Hauptbremszylinder nicht mehr mit Bremsflüssigkeit aus dem Vorratsbehälter versorgt wird. Dies führt dazu, daß bei Betätigung des Bremspedals statt Bremsflüssigkeit Luft in die Bremsleitungen und Radbremszylinder gedrückt wird. Dadurch wird der Bremsweg im Pedal bis zum Anschlag verlängert, und es ist nicht mehr möglich, den notwendigen Druck auf die Bremsbacken auszuüben. The sudden failure of the hydraulic brake then occurs when the master cylinder no longer has brake fluid from the reservoir is supplied. This means that when the brake pedal is pressed instead of brake fluid Air is pressed into the brake lines and wheel brake cylinders. This will make the Braking distance in the pedal is extended to the stop, and it is no longer possible to use the apply the necessary pressure on the brake shoes.

Die Erfindung vermeidet diese Nachteile durch ständige Kontrolle des Bremsflüssigkeitsstandes. The invention avoids these disadvantages through constant monitoring the brake fluid level.

Sie besteht im wesentlichen darin, daß durch Aufleuchten einer Kontrollampe am Armaturenbrett der Fahrer gewarnt wird, daß bereits 2/s seiner Bremsflüssigkeit durch Undichtigkeiten im Vorratsbehälter verlorengegangen sind.It consists essentially in the fact that a control lamp lights up on the dashboard the driver is warned that already 2 / s of his brake fluid have been lost due to leaks in the storage container.

Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung im Längsschnitt dargestellt. In der Zeichnung sind zu erkennen: Der Schwimmer I, der in der Bremsflüssigkeit des Vorratsbehälters I3 schwimmt. An dem Schwimmer I ist die Schwimmernadel 2 mit der Kontaktscheibe 4 befestigt; sie wird geführt durch die Verschraubung 6, an der sich gleichzeiig die Nadelführung g befindet. In der Verschraubung befindet sich außerdem die isolierte Kontaktspitze 3 mit der Anschlußklemme 5. In the drawing, an embodiment of the invention is in longitudinal section shown. The drawing shows: The float I, the one in the brake fluid of the reservoir I3 floats. The float needle 2 is with the float I. attached to the contact disk 4; it is guided through the screw connection 6 on the the needle guide g is at the same time. In the screw connection is also the insulated contact tip 3 with the connection terminal 5.

Um einen einwandfreien Massekontakt der Kontaktscheibe 4 herzustellen, ist diese durch eine Litze 7 mit der Verschraubung 6 verbunden. Der obere Teil der Verschraubung 6 ist mit einem Verschlußdeckel Io abgeschlossen.In order to establish a perfect ground contact of the contact washer 4, this is connected to the screw connection 6 by a strand 7. The upper part of the Screw connection 6 is completed with a closure cap Io.

Die Arbeitsweise der Vorrichtung gemäß der Erfindung ist folgende: Ist die Bremsflüssigkeit im Vorratsbehälter 13 auf ein Drittel ihres Volumens gesunken, so legt sich die Kontaktscheibe 4 auf die Kontaktspitze 3 und schließt so den Stromkreis vom Pluspol der Batterie ii über die Kontrolllampe 12 am Armaturenbrett, weiter über die Anschlußklemme 5 und die Kontaktspitze 3 sowie über die Kontaktscheibe 4 durch die Litze 7 zum Minuspol der Batterie. In dieser Stellung leuchtet die Lampe am Armaturenbrett auf, und der Fahrer wird dadurch gewarnt, seinen Bremsflüssigkeitsverlust umgehend zu prüfen, um ein plötzliches Versagen der Bremse zu vermeiden. The operation of the device according to the invention is as follows: If the brake fluid in the reservoir 13 has dropped to a third of its volume, so the contact disc 4 lies on the contact tip 3 and thus closes the circuit from the positive terminal of the battery ii via the control lamp 12 on the dashboard, continue via the terminal 5 and the contact tip 3 and via the contact disc 4 through the strand 7 to the negative pole of the battery. In this position the lamp lights up on the dashboard, and the driver is warned of his loss of brake fluid check immediately to avoid sudden brake failure.

Ist der Bremsflüssigkeitsvorratsbehälter wieder gefüllt, so steigt der Schwimmer I und trennt die Kontaktspitze 3 von der Kontaktscheibe 4, und die Kontrollampe 12 erlischt. Die Kontaktspitze 3 sowie die Kontaktscheibe 4 sind hartverchromt, um sie vor Oxydation zu schützen. Die Bohrung bildet die Entlüftung für den Bremsflüssigkeitsvorratsbehälter. If the brake fluid reservoir is filled again, it increases the float I and separates the contact tip 3 from the contact disc 4, and the Control lamp 12 goes out. The contact tip 3 and the contact washer 4 are hard chrome-plated, to protect them from oxidation. The hole forms the vent for the brake fluid reservoir.

PATENTANSPRtJCHE I. Elektrische Kontrollvorrichtung für den Bremsflüssigkeitsstand im Vorratsbehälter von hydraulischen Bremsen an Kraftfahrzeugen, dadurch gekennzeichnet, daß die Kontrollvorrichtung gleichzeitig die Verschlußverschraubung für den Vorratsbehälter der Bremsflüssigkeit bildet. PATENT CLAIMS I. Electrical control device for the brake fluid level in the reservoir of hydraulic brakes on motor vehicles, characterized in that that the control device at the same time the screw connection for the storage container the brake fluid forms.

2. Elektrische Kontrollvorrichtung nach Anspruch I, dadurch gekennzeichnet, daß die Kontrollvorrichtung fest im Vorratsbehälter eingebaut ist. 2. Electrical control device according to claim I, characterized in that that the control device is permanently installed in the storage container.

3. Elektrische Kontrollvorrichtung nach Anspruch I und 2, dadurch gekennzeichnet, daß sich in dem Vorratsbehälter ein Schwimmer vertikal an einer Schwimmernadel mit Kontaktscheibe bewegt. 3. Electrical control device according to claim I and 2, characterized characterized in that there is a float vertically in the reservoir Float needle with contact disc moved.

Claims (1)

4. Elektrische Kontrollvorrichtung nach Anspruch I und 3, dadurch gekennzeichnet, daß beim Verlust von Bremsflüssigkeit eine Kontrollampe im Blickfeld des Fahrers aufleuchtet, die durch den Schwimmer geschaltet wird. 4. Electrical control device according to claim I and 3, characterized marked that a control lamp in the field of vision in the event of loss of brake fluid of the driver lights up, which is switched by the float.
DEP55478A 1949-09-21 1949-09-21 Electrical control device for the brake fluid level in the reservoir of hydraulic brakes on motor vehicles Expired DE813498C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP55478A DE813498C (en) 1949-09-21 1949-09-21 Electrical control device for the brake fluid level in the reservoir of hydraulic brakes on motor vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP55478A DE813498C (en) 1949-09-21 1949-09-21 Electrical control device for the brake fluid level in the reservoir of hydraulic brakes on motor vehicles

Publications (1)

Publication Number Publication Date
DE813498C true DE813498C (en) 1951-09-13

Family

ID=7387796

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP55478A Expired DE813498C (en) 1949-09-21 1949-09-21 Electrical control device for the brake fluid level in the reservoir of hydraulic brakes on motor vehicles

Country Status (1)

Country Link
DE (1) DE813498C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245281A1 (en) * 1972-09-15 1974-03-21 Bendix Gmbh REFILL RESERVOIR OF A PRESSURE-ACTUATED BRAKE SYSTEM
DE2614536A1 (en) * 1976-04-03 1977-10-13 Vdo Schindling DEVICE FOR MONITORING THE LIQUID LEVEL IN A VESSEL
DE2642215A1 (en) * 1976-09-20 1978-03-23 Teves Gmbh Alfred Simple float switch for brake fluid level alarm - incorporates self-cleaning contact washer attached to float plunger giving rocking and sliding action

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245281A1 (en) * 1972-09-15 1974-03-21 Bendix Gmbh REFILL RESERVOIR OF A PRESSURE-ACTUATED BRAKE SYSTEM
DE2614536A1 (en) * 1976-04-03 1977-10-13 Vdo Schindling DEVICE FOR MONITORING THE LIQUID LEVEL IN A VESSEL
DE2642215A1 (en) * 1976-09-20 1978-03-23 Teves Gmbh Alfred Simple float switch for brake fluid level alarm - incorporates self-cleaning contact washer attached to float plunger giving rocking and sliding action

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