CH205728A - Motor vehicle brake with at least two brake shoe sets lying axially next to one another in a single brake drum. - Google Patents
Motor vehicle brake with at least two brake shoe sets lying axially next to one another in a single brake drum.Info
- Publication number
- CH205728A CH205728A CH205728DA CH205728A CH 205728 A CH205728 A CH 205728A CH 205728D A CH205728D A CH 205728DA CH 205728 A CH205728 A CH 205728A
- Authority
- CH
- Switzerland
- Prior art keywords
- brake
- motor vehicle
- another
- drum
- axially next
- Prior art date
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
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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
- 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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D2051/001—Parts or details of drum brakes
- F16D2051/006—Braking members arranged axially spaced, e.g. side by side
-
- 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
-
- 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
- F16D2125/44—Mechanical mechanisms transmitting rotation
- F16D2125/56—Shafts for transmitting torque directly
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Description
Kraftfahrzeugbremse mit mindestens zwei in einer einzigen Bremstrommel axial nebeneinanderliegenden Bremsbackensätzen. Zur Erzielung hoher Bremskräfte werden sehr breite Bremstrommeln verwendet, die den Nachteil haben, dass sie durch Erwärmung eine schwach konische Form annehmen. Für eine möglichst gleichmässige Anlage der Brems backen wurden diese in axialer Richtung in zwei nebeneinanderliegende Sätze aufgeteilt und von einem gemeinsamen Bremsschlüssel zwangläufig betätigt. Die durch die Wärme ausdehnung der Bremstrommel bedingte, un gleiche Anlage der Bremsbacken wurde hier durch jedoch nicht vermieden.
Die Erfindung betrifft eine Kraftfahrzeug bremse mit mindestens zwei in einer einzigen Bremstrommel axial nebeneinanderliegenden Bremsbackensätzen, deren Spreizglieder über eine Hohlwelle bezw. eine die Hohlwelle durchsetzende Vollwelle an ein einziges ausser halb der Bremstrommel liegendes Bedienungs organ angeschlossen sind, und besteht darin, dass ein zur Erzielung einer gewissen Unab- hängigkeit in der Spreizung der verschiedenen Spreizglieder nachgiebiges Übertragungsorgan zwischen diesen und dem Bedienungsorgan vorgesehen ist.
Auf der Zeichnung ist der Erfindungsge genstand beispielsweise veranschaulicht, und zwar zeigt Fig. 1 die Bremse im Aufriss und Fig. 2 im Seitenriss, teilweise geschnitten. Auf der Zeichnung bedeutet 1 eine aussen mit Kühlrippen versehene Bremstrommel eines schweren Kraftfahrzeuges, die mit einem nicht dargestellten Laufrad starr verbunden ist. Der Innenraum der Bremstrommel ist durch eine am Achsgehäuse 2 starr ange brachte Ringscheibe 3 aufgeteilt. Die Ring scheibe trägt auf beiden Seiten Zapfen 4, die Schwenklager für die Bremsbacken bilden, von denen je zwei den Bremsbackensatz 5 und den Bremsbackensatz 6 bilden. Die Brems backen sind mit einem Bremsbelag 7 versehen.
Zwischen den freien Enden der Bremsbachen des Satzes 5 liegt ein Spreizorgan 8 und zwischen den Bremsbacken des Satzes 6 ein Spreizorgan 9. Das Spreizorgan 8 sitzt auf dem Ende einer Hohlwelle 10, die aus der Bremstrommel 1 herausragt und deren An schlussende von einem Bremshebel 11 erfasst wird. Das Spreizorgan 9 sitzt auf dem Ende eines von einer abgesetzten Vollwelle gebil deten Drehstabes 12, der die Ringscheibe 3, das Spreizorgan 8 und die Hohlwelle 10 durchsetzt und dessen Anschlussende in eine am Achsgehäuse 2 befestigte Buchse 13 ein greift. Der Drehstab 12 ist an diesem Ende mit Hilfe einer Kerbverzahnung 14 mit dem Ende der Hohlwelle 10 gekuppelt. Die Brems backen eines jeden Bremsbackensatzes stehen unter der Wirkung von Zugfedern 15.
Die Wirkungsweise der Bremse ist fol gende: Durch Drehung des Bremshebels 11 werden die Spreizorgane 8 und 9 verstellt und damit die Bremsbachen der beiden Brems backensätze 5 und 6 von innen gegen die Bremstrommel 1 gedrückt. Dadurch, dass die beiden Spreizorgane 8 und 9 über den Dreh stab 12 miteinander gekuppelt sind, kann das Spreizorgan 8 eine grössere Verdrehung als das Spreizorgan 9 ausführen, sofern in folge Erwärmung der Bremstrommel eine zusätzliche Spreizung der Bremsbachen des Bremsbackensatzes 5 erforderlich wird.
Motor vehicle brake with at least two brake shoe sets lying axially next to one another in a single brake drum. To achieve high braking forces, very wide brake drums are used, which have the disadvantage that they take on a slightly conical shape when heated. To ensure that the brake shoes are as evenly as possible, they have been divided into two sets next to each other in the axial direction and actuated by a common brake key. The uneven contact of the brake shoes caused by the thermal expansion of the brake drum was not avoided here.
The invention relates to a motor vehicle brake with at least two axially juxtaposed brake shoe sets in a single brake drum, the spreading members BEZW via a hollow shaft. a solid shaft penetrating the hollow shaft are connected to a single operating organ located outside the brake drum, and consists in that a flexible transmission element is provided between these and the operating organ to achieve a certain independence in the spreading of the various expansion members.
In the drawing, the subject of the invention is illustrated, for example, namely, Fig. 1 shows the brake in elevation and Fig. 2 in side elevation, partially in section. In the drawing, 1 denotes a brake drum of a heavy motor vehicle which is provided on the outside with cooling fins and which is rigidly connected to an impeller, not shown. The interior of the brake drum is divided by a washer 3 attached rigidly to the axle housing 2. The ring disc carries pins 4 on both sides, which form pivot bearings for the brake shoes, two of which form the brake shoe set 5 and the brake shoe set 6. The brake shoes are provided with a brake lining 7.
Between the free ends of the brake jaws of set 5 there is a spreader 8 and between the brake shoes of set 6 a spreader 9. The spreader 8 sits on the end of a hollow shaft 10 which protrudes from the brake drum 1 and whose connecting end is detected by a brake lever 11 becomes. The spreader 9 sits on the end of an offset solid shaft gebil Deten torsion bar 12, which penetrates the washer 3, the spreader 8 and the hollow shaft 10 and whose connection end engages in a socket 13 attached to the axle housing 2. The torsion bar 12 is coupled to the end of the hollow shaft 10 at this end with the aid of serrations 14. The brake shoes of each brake shoe set are under the action of tension springs 15.
The operation of the brake is fol lowing: By turning the brake lever 11, the spreaders 8 and 9 are adjusted and thus the brake jaws of the two brake jaw sets 5 and 6 are pressed against the brake drum 1 from the inside. Because the two spreaders 8 and 9 are coupled to one another via the rotary rod 12, the spreader 8 can perform a greater rotation than the spreader 9 if, as a result of the heating of the brake drum, an additional spreading of the brake jaws of the brake shoe set 5 is required.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED76703D DE679907C (en) | 1937-11-28 | 1937-11-28 | Motor vehicle brake with several brake shoe assemblies axially adjacent to one another in a single brake drum |
Publications (1)
Publication Number | Publication Date |
---|---|
CH205728A true CH205728A (en) | 1939-06-30 |
Family
ID=7062271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH205728D CH205728A (en) | 1937-11-28 | 1938-11-05 | Motor vehicle brake with at least two brake shoe sets lying axially next to one another in a single brake drum. |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH205728A (en) |
DE (1) | DE679907C (en) |
FR (1) | FR845625A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1043837B (en) * | 1955-03-25 | 1958-11-13 | Perrot Bremse G M B H Deutsche | Servo brakes, especially for motor vehicles |
US2985260A (en) * | 1957-07-19 | 1961-05-23 | Clark Equipment Co | Double brake assembly |
DE1210340B (en) * | 1961-09-06 | 1966-02-03 | Girling Ltd | Double brake for motor vehicles |
-
1937
- 1937-11-28 DE DED76703D patent/DE679907C/en not_active Expired
-
1938
- 1938-11-04 FR FR845625D patent/FR845625A/en not_active Expired
- 1938-11-05 CH CH205728D patent/CH205728A/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR845625A (en) | 1939-08-29 |
DE679907C (en) | 1939-08-16 |
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