AT244785B - drum brake - Google Patents
drum brakeInfo
- Publication number
- AT244785B AT244785B AT371364A AT371364A AT244785B AT 244785 B AT244785 B AT 244785B AT 371364 A AT371364 A AT 371364A AT 371364 A AT371364 A AT 371364A AT 244785 B AT244785 B AT 244785B
- Authority
- AT
- Austria
- Prior art keywords
- brake
- drum
- grooves
- drum brake
- notches
- 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
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging 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
- 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
-
- 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
- F16D65/02—Braking members; Mounting thereof
- F16D65/10—Drums for externally- or internally-engaging brakes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Description
<Desc/Clms Page number 1>
Trommelbremse
Die Erfindung bezieht sich auf eine Trommelbremse der an sich bekannten Art, bei der die Trommel und die Bremsbacken mit ineinandergreifenden, in Umfangsrichtung verlaufenden Rillen bzw. Rippen versehen sind. Bei einer solchen Bremse ist die Bremsfläche vergrössert, aber die Entfernung von Bremsstaub und die Kühlung erschwert.
Die Erfindung bezweckt, diese Nachteile zu beseitigen und sie besteht darin, dass benachbarte Rillen durch im wesentlichen achsparallel verlaufende Kerben an mehreren Stellen untereinander verbunden sind. Durch diese Kerben wird eine Kühlung der Bremse bewirkt, da die Kerben eine Luftbewegung hervorrufen bzw. unterstützen. Gleichzeitig erfolgt dadurch eine Entfernung von Bremsstaub.
Einzelheiten und Merkmale der Erfindung werden an Hand der Zeichnung näher erläutert, welche eine beispielsweise Ausführungsform der erfindungsgemässen Trommelbremse veranschaulicht. Es zeigen : Fig. l einen Querschnitt durch die Trommelbremse, Fig. 2 ein schematisches Schaubild der Trommelbremse teilweise im Querschnitt und Fig. 3 eine Schrägansicht teilweise im Schnitt einer Bremsbacke.
Die erfindungsgemässe Trommelbremse weist den üblichen Aufbau, z. B. einer Innenbackenbremse mit einer Bremstrommel 1 und Bremsbacken 2 auf. Die Trommelbremse kann z. B. für Kraftfahr- zeuge Verwendung finden, ist aber auch für andere Zwecke geeignet.
Die miteinander in Berührung kommenden Bremsflächen der Trommel und der Bremsbacken sind mit Rillen 3 und 4 versehen, die z. B. einen V-förmigen Querschnitt aufweisen. Die Rillenflanken sind dabei zweckmässig flacher geneigt als der Reibungswinkel zwischen dem Material der Bremstrommel und dem Bremsbelag der Bremsbacken beträgt. Damit wird eine sichere Lösung der Bremse gewährleistet. Durch die Anordnung von Rillen wird die Bremsfläche wesentlich vergrössert, u. zw. auf mehr als das Doppelte der üblichen Anordnung ebener Bremsflächen.
Die zwischen den Rillen verbleibenden Rippen können an der Spitze 5 einen abgeflachten Querschnitt aufweisen. Auch der Rillengrund kann abgeflacht sein, so dass sich im wesentlichen eine trapezförmige Querschnittsform der Rillen bzw. Rippen ergibt.
Zur Verbesserung der Kühlwirkung, die mit Rücksicht auf die grosse Bremsfläche bei Beibehaltung der äusseren Abmessungen einer Trommelbremse besonders wesentlich ist, sind benachbarte Rillen 3 der Trommel, aber auch benachbarte Rillen 4 der Bremsbacken durch quer liegende Kerben 7 untereinander verbunden. Ausserdem können auf der Aussenseite der Bremstrommel Kühlrippen 8. angeordnet werden. Die durch die Kerben 7 innerhalb der Bremse hervorgerufene Luftbewegung verbessert nicht nur die Kühlung der Bremse, sondern bewirkt auch eine Entfernung des Bremsstaubes.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
drum brake
The invention relates to a drum brake of the type known per se, in which the drum and the brake shoes are provided with mutually engaging grooves or ribs running in the circumferential direction. With such a brake, the braking surface is enlarged, but the removal of brake dust and cooling are more difficult.
The aim of the invention is to eliminate these disadvantages and it consists in that adjacent grooves are connected to one another at several points by means of notches which run essentially parallel to the axis. These notches cool the brake because the notches cause or support air movement. This also removes brake dust.
Details and features of the invention are explained in more detail with reference to the drawing, which illustrates an example embodiment of the drum brake according to the invention. The figures show: FIG. 1 a cross section through the drum brake, FIG. 2 a schematic diagram of the drum brake, partly in cross section, and FIG. 3 an oblique view partly in section of a brake shoe.
The drum brake according to the invention has the usual structure, for. B. an inner shoe brake with a brake drum 1 and 2 brake shoes. The drum brake can, for. B. for motor vehicles use, but is also suitable for other purposes.
The coming into contact braking surfaces of the drum and the brake shoes are provided with grooves 3 and 4, the z. B. have a V-shaped cross section. The flanks of the grooves are expediently more flatly inclined than the angle of friction between the material of the brake drum and the brake lining of the brake shoes. This ensures that the brake is released safely. By arranging grooves, the braking surface is significantly increased, u. between more than twice the usual arrangement of flat braking surfaces.
The ribs remaining between the grooves can have a flattened cross section at the tip 5. The groove bottom can also be flattened, so that the grooves or ribs have a substantially trapezoidal cross-sectional shape.
To improve the cooling effect, which is particularly important considering the large braking surface while maintaining the external dimensions of a drum brake, adjacent grooves 3 of the drum, but also adjacent grooves 4 of the brake shoes, are connected to one another by transverse notches 7. In addition, cooling fins 8 can be arranged on the outside of the brake drum. The air movement caused by the notches 7 inside the brake not only improves the cooling of the brake, but also causes the brake dust to be removed.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT371364A AT244785B (en) | 1964-04-27 | 1964-04-27 | drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT371364A AT244785B (en) | 1964-04-27 | 1964-04-27 | drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT244785B true AT244785B (en) | 1966-01-25 |
Family
ID=3554362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT371364A AT244785B (en) | 1964-04-27 | 1964-04-27 | drum brake |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT244785B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6253883B1 (en) * | 1997-08-07 | 2001-07-03 | Nsk-Warner Kabushiki Kaisha | Brake drum with parallel grooves |
| CN114127434A (en) * | 2019-07-16 | 2022-03-01 | 沃尔沃卡车集团 | Brake dust catcher for drum brake |
-
1964
- 1964-04-27 AT AT371364A patent/AT244785B/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6253883B1 (en) * | 1997-08-07 | 2001-07-03 | Nsk-Warner Kabushiki Kaisha | Brake drum with parallel grooves |
| CN114127434A (en) * | 2019-07-16 | 2022-03-01 | 沃尔沃卡车集团 | Brake dust catcher for drum brake |
| CN114127434B (en) * | 2019-07-16 | 2024-03-26 | 沃尔沃卡车集团 | Brake dust catcher for drum brake |
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