DE850397C - Brake cam arrangement in internal shoe brakes, especially on motor vehicles - Google Patents

Brake cam arrangement in internal shoe brakes, especially on motor vehicles

Info

Publication number
DE850397C
DE850397C DET1523D DET0001523D DE850397C DE 850397 C DE850397 C DE 850397C DE T1523 D DET1523 D DE T1523D DE T0001523 D DET0001523 D DE T0001523D DE 850397 C DE850397 C DE 850397C
Authority
DE
Germany
Prior art keywords
brake
cam
motor vehicles
brake cam
cam arrangement
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
DET1523D
Other languages
German (de)
Inventor
Adam Pleines
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.)
Continental Teves AG and Co oHG
Original Assignee
Alfred Teves GmbH
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 Alfred Teves GmbH filed Critical Alfred Teves GmbH
Priority to DET1523D priority Critical patent/DE850397C/en
Application granted granted Critical
Publication of DE850397C publication Critical patent/DE850397C/en
Expired 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • F16D2125/28—Cams; Levers with cams
    • F16D2125/30—Cams; Levers with cams acting on two or more cam followers, e.g. S-cams

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

Die mittels Bremsnocken betätigten Bremsvorrichtungen der bekannten Art sehen einen einzigen Bremsnocken vor, der in der Mitte im Bremsschild drehbar gelagert ist und dessen eines Ende auf den einen Backen und dessen anderes Ende auf den anderen Backen einwirkt. Infolgedessen tritt bei derartigen Bremsen der Nachteil ein, daß die beiden Bremsbacken verschieden stark beaufschlagt werden, da infolge der verschieden großen Abstände der Angriffspunkte der einzelnen Nocken vom Bremsbackenlagerpunkt auf die beiden Bremsbacken verschieden große Drücke ausgeübt werden.The brake devices operated by means of brake cams of the known Art provide a single brake cam that rotates in the middle in the brake shield is mounted and one end of which is on one jaw and the other end acts on the other jaw. As a result, occurs in such brakes Disadvantage that the two brake shoes are acted upon differently, because of the different large distances between the points of application of the individual cams differently large pressures exerted from the brake shoe bearing point on the two brake shoes will.

Der Erfindung liegt die Aufgabe zugrunde, diesen Nachteil zu vermeiden. Zu diesem Zweck ist für jeden Bremsbacken ein besonderer, im Bremsschild drehbar gelagerter Bremsnocken vorgesehen, der vom Nocken für den anderen Bremsbacken unabhängig ist, mit diesem aber über eine gemeinsame Betätigungsvorrichtung, beispielsweise einen Druckzylinder, einen Seilzug od. dgl., betätigt werden kann. Mit einer derartigen Vorrichtung wird erreicht, daß die wirksamen Hebelarme der auf die Backen wirkenden Nockenkräfte gleich groß sind, so daß die Beaufschlagung gleichmäßig erfolgt.The invention is based on the object of avoiding this disadvantage. For this purpose, there is a special rotatable in the brake shield for each brake shoe stored brake cam provided, which is independent of the cam for the other brake shoes is, with this but via a common actuating device, for example a pressure cylinder, a cable pull or the like. Can be operated. With such a Device is achieved that the effective lever arms acting on the jaws Cam forces are equal, so that the application takes place evenly.

Ein Ausführungsbeispiel des Gegenstandes der Erfindung ist in den Abbildungen dargestellt.An embodiment of the subject matter of the invention is shown in Illustrations shown.

Zwischen den Bremsbacken i und 2 (Abb. i) sind, wie im einzelnen aus Abb. 2 ersichtlich, die beiden Bremsnocken 3 und 4 gelagert, die über die zugehörigen Hebel 5 bzw. 6 betätigt werden, und zwar, wie in Abb. 3 schematisch dargestellt, durch einen Druckmittelzylinder 7 sowie einen Seilzug 8, der vom Ende des Hebels $ ausgeht und über eine Rolle 9 des Hebels 6 läuft.Between the brake shoes i and 2 (Fig. I) are, as shown in detail Fig. 2 can be seen, the two brake cams 3 and 4 mounted on the associated Lever 5 or 6 are operated, as shown in Fig. 3 schematically, by a pressure cylinder 7 and a cable 8 from the end of the lever $ goes out and runs over a roller 9 of the lever 6.

Durch verschiedenartige Ausführung der Form der Nocken läßt sich eine Angleichung der Kräfte zwischen Primär- und Sekundärbacken erreichen. Ein Ausführungsbeispiel ist in Abb. 4 dargestellt. Der Nocken io, der den Sekundärbacken ii beaufschlagt, besitzt einen größeren Radius als der Nocken 12 für den Primärbacken 13. Durch diese verschiedenen Radien wird ein entsprechend verschiedenes Übersetzungsverhältnis erreicht, wodurch der Ausgleich zwischen dem Primär- und dem Sekundärbacken erreicht wird.By designing the shape of the cams in different ways, a Achieve equalization of the forces between the primary and secondary jaws. An embodiment is shown in Fig. 4. The cam io, which acts on the secondary jaw ii, has a larger radius than the cam 12 for the primary jaw 13. By this different radii will have a correspondingly different transmission ratio achieved, thereby achieving the balance between the primary and secondary jaws will.

Claims (1)

PATENTANSPRÜCHE: i. Bremsnockenanordnung bei Innenbackenbremsen, insbesondere an Kraftfahrzeugen, dadurch gekennzeichnet, daß für jeden Bremsbacken (i,2; 1i, 13) ein besonderer, im Bremsschild drehbar gelagerter Bremsnocken (3, 4; io, 12) vorhanden ist, der vom anderen Nocken unabhängig ist, mit diesem aber von einer gemeinsamen Betätigungsvorrichtung, beispielsweise einem schwimmend angeordneten Druckmittelzylinder (7), einem Seilzug (8) od. dgl., betätigt werden kann. z. Bremsnocken nach Anspruch i, dadurch gekennzeichnet, daß der auf den Sekundärbacken (i i) wirkende Nocken (io) einen größeren Radius besitzt als der Nocken (i2) des Primärbackens (i3). PATENT CLAIMS: i. Brake cam arrangement in internal shoe brakes, especially on motor vehicles, characterized in that for each brake shoe (i, 2; 1i, 13) there is a special brake cam (3, 4; io, 12) which is rotatably mounted in the brake shield and which is independent of the other cam , but with this can be operated by a common operating device, for example a floating fluid cylinder (7), a cable (8) or the like. z. Brake cam according to claim i, characterized in that the cam (io) acting on the secondary jaw (ii) has a larger radius than the cam (i2) of the primary jaw (i3).
DET1523D 1944-09-30 1944-09-30 Brake cam arrangement in internal shoe brakes, especially on motor vehicles Expired DE850397C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET1523D DE850397C (en) 1944-09-30 1944-09-30 Brake cam arrangement in internal shoe brakes, especially on motor vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET1523D DE850397C (en) 1944-09-30 1944-09-30 Brake cam arrangement in internal shoe brakes, especially on motor vehicles

Publications (1)

Publication Number Publication Date
DE850397C true DE850397C (en) 1952-09-25

Family

ID=7543481

Family Applications (1)

Application Number Title Priority Date Filing Date
DET1523D Expired DE850397C (en) 1944-09-30 1944-09-30 Brake cam arrangement in internal shoe brakes, especially on motor vehicles

Country Status (1)

Country Link
DE (1) DE850397C (en)

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