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 vehiclesInfo
- 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
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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/225—Devices for monitoring or checking brake systems; Signal devices brake fluid level indicators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating 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
- G01F23/56—Indicating 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
- G01F23/60—Indicating 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)
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)
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 |
-
1949
- 1949-09-21 DE DEP55478A patent/DE813498C/en not_active Expired
Cited By (3)
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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