DE846207C - Two-jaw internal drum brake, especially for manual operation, for motor vehicle trailers, farm wagons or the like. - Google Patents
Two-jaw internal drum brake, especially for manual operation, for motor vehicle trailers, farm wagons or the like.Info
- Publication number
- DE846207C DE846207C DEZ1830A DEZ0001830A DE846207C DE 846207 C DE846207 C DE 846207C DE Z1830 A DEZ1830 A DE Z1830A DE Z0001830 A DEZ0001830 A DE Z0001830A DE 846207 C DE846207 C DE 846207C
- Authority
- DE
- Germany
- Prior art keywords
- brake
- motor vehicle
- manual operation
- jaw
- vehicle trailers
- 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
-
- 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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
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- 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 Erfindung betrifft eine Zweibacken-Trommel-Innenbremse, insbesondere zur Handbetätigung, für Kraftfahrzeug-Anhänger, Ackerwagen od. dgl., deren Bremsbacken über Gelenke an einen gemeinsamen Festpunkt angeschlossen sind und durch Betätigung einer Nockenwelle gleichmäßig gegen die Bremstrommelinnenwand gedrückt werden.The invention relates to a two-jaw internal drum brake, in particular for manual operation, for motor vehicle trailers, farm wagons or the like, their brake shoes are connected to a common fixed point via joints and by actuation a camshaft are pressed evenly against the inner wall of the brake drum.
Während bei mittels Öldruck oder Luftdruck betätigten Bremsen von Kraftfahrzeugen bereits Trommel-Innenbremsen üblich sind, deren Bremsbackenbefestigung so konstruiert ist, daß die Bremsbacken gleichmäßig anliegen, ist es bei handbetätigten Bremsen von Ackerwagen, Kraftfahrzeug-Anhängern usw. heute noch weithin üblich, Trommelbremsen zu verwenden, deren Bremsbacken jeweils an einer Seite auf einem festen Bolzen drehbar befestigt sind, so daß ein starker ungleichmäßiger Verschleiß eintritt, der ein ständiges Regulieren der Bremseinrichtung notwendig macht.While with brakes actuated by means of oil pressure or air pressure from Internal drum brakes are already common in motor vehicles, their brake shoe attachment is designed so that the brake shoes lie evenly, it is with hand-operated Braking of farm wagons, motor vehicle trailers, etc. is still widely used today, To use drum brakes, the brake shoes each on one side on one fixed bolts are rotatably attached, so that a strong uneven wear occurs, which makes constant regulation of the braking device necessary.
Ziel der Erfindung ist es, eine möglichst einfache und betriebssichere Zweibacken-Trommel-Innenbremse zu schaffen, die vorwiegend zur Handbetätigung geeignet ist, dabei aber die Vorteile der Scharnieraufhängung für die Bremsbacken benutzt, um ein gleichmäßiges Anliegen des Bremsbelages zu erzielen, so daß sie zu einem für einfache Fahrzeuge annehmbaren Preis geliefert werden kann.The aim of the invention is to provide the simplest and most reliable To create two-jaw internal drum brakes that are primarily suitable for manual operation is, but uses the advantages of the hinge mounting for the brake shoes, to achieve an even fit of the brake lining, so that they become one can be delivered at a reasonable price for simple vehicles.
Die Erfindung besteht darin, daß die gelenkige Anbringung der Bremsbacken an einen durch einen Bolzen gebildeten Festpunkt mittels Scharnierlaschen erfolgt, auf denen Anschlagstifte angebracht sind, welche in Schlitzen einer feststehenden, vorteilhaft um den Festpunkt angeordneten Klammer ihre Führung finden: Ferner ist es kennzeichnend für die Erfindung, claß die an den Enden der Bremsbacken angebrachten Gleitrollen auf einem aus zwei gleichen Teilen bestehenden, mit seitlichen Führungsrand verseheiien und auf der Nockenwelle nietfest aufgebrachten Nocken beim Betätigen der Bremse abrollen. Es wird dadurch erreicht, daß die Bremsbacken auch im Bereich der Nockenwelle sicher geführt werden.The invention consists in that the articulated attachment of the brake shoes takes place at a fixed point formed by a bolt by means of hinge straps, on which stop pins are attached, which are in slots of a fixed, Advantageously arranged around the fixed point bracket find their guidance: Furthermore is It is characteristic of the invention that they are attached to the ends of the brake shoes Sliding rollers on one consisting of two equal parts, with a lateral guide edge verseheiien and rivet-proof cams on the camshaft when actuated the brake roll. It is achieved that the brake shoes are also in the area the camshaft can be safely guided.
Für die Wirkungsweise der Bremsvorrichtung ergibt sich der Vorteil, daß beim Betätigen der Bremse die Bremsbacken, ihre ursprüngliche Lage verlassend, nicht wie bisher bei handbetätigten Bremsen eine Schwenkung, sondern eine einander entgegengerichtete Parallelverschiebung ausführen, wobei die Verschiebung, d. h. die Erweiterung des Durchmessers des Bremskreises gleich der Veränderung des Scharnierabstands und dem Abstand der auf der Nockenwelle laufenden Gleitrollen voneinander ist, also der Bremsbelag sich gleichmäßig an die Innenfläche der Bremstrommel anlegt. Es entsteht also so eine einwandfreie Kupplung, die einen weit höheren Wirkungsgrad ergibt, als mit den bisher bekannten von Hand zu betätigenden Vorrichtungen zu erreichen ist. Auch ist der Verschleiß des Bremsbelags infolge ,der gleichmäßigeren Abnutzung außerordentlich geringer.For the mode of operation of the braking device there is the advantage that that when the brake is applied, the brake shoes, leaving their original position, not a swivel, as was previously the case with hand-operated brakes, but one with the other perform opposite parallel displacement, the displacement, d. H. the expansion of the diameter of the brake circuit equals the change in the hinge distance and the distance between the sliding rollers running on the camshaft, that is the brake lining rests evenly on the inner surface of the brake drum. It arises So such a perfect coupling, which results in a much higher degree of efficiency, than to achieve with the previously known manually operated devices is. The wear of the brake lining is also a result of the more even wear extraordinarily lower.
In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel dargestellt.In the drawing, the invention is shown in one embodiment.
Abb. i zeigt eine Zweibacken-"I'ronimel-Innenbremse, Abb. 2 zeigt einen Schnitt nach clei- Linie A-A der Abb. i und Abb.3 einen Schnitt nach der Linie B-ß der Abb. i.Fig. I shows a two-jaw "I'ronimel internal brake, Fig. 2 shows a section along the line A-A of Fig. i and Fig.3 a section along the line B-ß of Fig. I.
Der Lremshebel i ist auf dein Ende der Nockenwelle 2 befestigt, wobei zum Zweck einer Regulierung des Bremshebelausschlags das Nockenwellenende und das Auge im Bremshebel 1 geriffelt sind. Auf das in den Radnabenraum hineinragende Ende der Nockenwelle 2 ist der aus zwei Teilen bestehende, mit Führungsrand 3 ausgerüstete Nocken 4 aufgebracht, auf dem die Rollen 5, welche an den Spitzen der Bremsbacken 6 angebracht sind, abrollen und geführt werden. Die Bremsbacken 6 sind mit einem Bremsbelag 7 versehen. Eine Rückholfeder 8 läßt die Rollen 5 der Bremsbacken 6 ständig an der Oberfläche des Nockens .4 anliegen. Die Bremsbacken 6 sind an ihrem unteren Ende an Scharnierlaschen 9 angelenkt, welche mit einem gegebenenfalls federnd angebrachten Führungsstift io ausgerüstet sind, der sich in dein Schlitz i i der feststehenden Klammer 12 bewegen kann. Die Scharnierlaschen 9 sind um einen gemeinsamen Mittelpunkt zu bewegen, der durch den Bolzen 13 gebildet wird. Durch die Führungsfeder 14 werden die Hauptteile der Vorrichtung gegen seitliches Verschieben zusätzlich gesichert. Mit 15 ist die Innenfläche der Bremstrommel bezeichnet.The brake lever i is attached to the end of the camshaft 2, whereby for the purpose of regulating the brake lever deflection, the camshaft end and the Eye in the brake lever 1 are corrugated. On the end protruding into the wheel hub space of the camshaft 2 is the one that consists of two parts and is equipped with a guide edge 3 Cam 4 applied on which the rollers 5, which are at the tips of the brake shoes 6 are attached, unroll and be guided. The brake shoes 6 are with a Brake lining 7 provided. A return spring 8 leaves the rollers 5 of the brake shoes 6 constantly rest on the surface of the cam .4. The brake shoes 6 are at their lower End hinged to hinge straps 9, which may be attached to a resilient Guide pin io, which is located in your slot i i of the fixed Clamp 12 can move. The hinge tabs 9 are around a common center point to move, which is formed by the bolt 13. By the guide spring 14 are the main parts of the device are additionally secured against lateral displacement. With 15 the inner surface of the brake drum is referred to.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ1830A DE846207C (en) | 1951-04-15 | 1951-04-15 | Two-jaw internal drum brake, especially for manual operation, for motor vehicle trailers, farm wagons or the like. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ1830A DE846207C (en) | 1951-04-15 | 1951-04-15 | Two-jaw internal drum brake, especially for manual operation, for motor vehicle trailers, farm wagons or the like. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE846207C true DE846207C (en) | 1952-08-11 |
Family
ID=7618283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEZ1830A Expired DE846207C (en) | 1951-04-15 | 1951-04-15 | Two-jaw internal drum brake, especially for manual operation, for motor vehicle trailers, farm wagons or the like. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE846207C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3109519A (en) * | 1960-04-13 | 1963-11-05 | Bendix Corp | Cam shaft actuated internally expanding brake |
WO1997021043A1 (en) * | 1995-12-07 | 1997-06-12 | Meritor Heavy Vehicle Systems, Llc | Drum brake actuator with center tracking roller and cam arrangement |
US5649612A (en) * | 1994-07-29 | 1997-07-22 | Rockwell International Corporation | Brake bracket assembly |
-
1951
- 1951-04-15 DE DEZ1830A patent/DE846207C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3109519A (en) * | 1960-04-13 | 1963-11-05 | Bendix Corp | Cam shaft actuated internally expanding brake |
US5649612A (en) * | 1994-07-29 | 1997-07-22 | Rockwell International Corporation | Brake bracket assembly |
WO1997021043A1 (en) * | 1995-12-07 | 1997-06-12 | Meritor Heavy Vehicle Systems, Llc | Drum brake actuator with center tracking roller and cam arrangement |
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