DE897661C - Two-part iron brake body for freewheel brake hubs - Google Patents

Two-part iron brake body for freewheel brake hubs

Info

Publication number
DE897661C
DE897661C DEF704D DEF0000704D DE897661C DE 897661 C DE897661 C DE 897661C DE F704 D DEF704 D DE F704D DE F0000704 D DEF0000704 D DE F0000704D DE 897661 C DE897661 C DE 897661C
Authority
DE
Germany
Prior art keywords
brake
freewheel
hubs
part iron
brake body
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
DEF704D
Other languages
German (de)
Inventor
Wilhelm Dipl-Ing Wittig
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.)
ZF Sachs AG
Original Assignee
Fichtel and Sachs AG
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 Fichtel and Sachs AG filed Critical Fichtel and Sachs AG
Priority to DEF704D priority Critical patent/DE897661C/en
Application granted granted Critical
Publication of DE897661C publication Critical patent/DE897661C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
    • B62L5/00—Brakes, or actuating mechanisms therefor, controlled by back-pedalling
    • B62L5/006—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Powder Metallurgy (AREA)

Description

Als Bremsfläche von Freilawfbremsnaben wurden bisher Metalle verschiedener Härte und Gleitfähigkeit verwendet. Meist wird bei derartigen Bremsen ein zweiteiliger Bremskörper gegen. die als. Bremsfläche ausgebildete Innenfläche der Nabenhülse gedrückt. Bei geeigneter Auswahl des Werkstoffes war es möglich, blefriedigende Betriebsergebnisse trotz der bei diesen Bremsen auftretenden 'hohen spezifischen Flächendrücke zu erhalten.Metals of various types have hitherto been used as the braking surface of freewheel brake hubs Hardness and lubricity used. Usually a two-part brake is used for such brakes Brake body against. as. Brake surface formed inner surface of the hub shell pressed. With a suitable selection of the material it was possible to achieve lasting results Operating results in spite of the 'high specific To get surface pressures.

Der Erfindungsgegenstand stellt eine Weiterentwicklung -des Werkstoffes für zweiteilige eiserne Bremskörper dar. Durch die Erfindung wird leine Kombination zwischen einem besonders gut schmierfähigen Werkstoff, nämlich dem Sintereisen, und einem besonders dauerhaften Werkstoff, nämlich dem phosphatisierten Werkstoff, geschaffen. Es hat sich außerdem auch in der Praxis- gezeigt, daß ein phosphatierter Überzug auf Bremskörpern aus Eisen wegen seiner physikalischen Eigenschaften nicht nur einen starken Reibungswiderstand schafft, sondern auch bei starker Erwärmung nicht merkbar abgenutzt wird und selbst bei mangelnder Schmierung nicht frißt. Das phosphatierte Sintereisen stellt also einen Werkstoff dar, der selbst den größten Beanspruchungen beim Bremsen gewachsen ist, da einerseits das Sintereisen im erlieblichen Maß Schmiermittel aufnehmen kann ünd andererseits auch bei Aussetzen der Schmierung nicht zum Fressen neigt. Es wird also mit einfachen Mitteln eine große Betriebssicherheit erreicht.The subject of the invention represents a further development of the material for two-part iron brake body. The invention is a leash combination between a particularly good lubricating material, namely sintered iron, and a particularly durable material, namely the phosphated material, created. It has also been shown in practice that a phosphated No coating on iron brake bodies because of its physical properties only creates a strong frictional resistance, but also with strong heating does not wear out noticeably and does not eat even with insufficient lubrication. That Phosphated sintered iron is therefore a material that is itself the largest Stresses during braking has grown, since on the one hand the sintered iron is palatable Can absorb a certain amount of lubricant and, on the other hand, also when the lubrication is interrupted does not tend to eat. So there is a high level of operational reliability with simple means achieved.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes in einem Längsschnitt dargestellt. Die Bremshülsenhälfben i und 2, die durch die Feder 3 zusammengehalten werden, sind an der Oberfläche 4 phosphatiert. Die Hälften i und 2 bestehen aus Sintereisen.The drawing shows an embodiment of the subject matter of the invention shown in a longitudinal section. The brake sleeve halves i and 2, which by the Spring 3 are held together, are phosphated on the surface 4. The halves i and 2 are made of sintered iron.

Claims (1)

iATENTANSPRUCH: Zweiteiliger eiserner Bremskörper für Freilaufbrems.naben, dadurch gekennzeichnet, daß er aus Sintereisen besteht und seine Oberfläche phosph.atiert ist. Angezogene Druckschriften: Deutsche Patentschriften Nr. 323 576, 651 216, 624 978, 661, 071; dänische Patentschrift Nr. 51695; schweizerische Patentschrift Nr. 212 o99; USA.-Patentschrift Nr. 2.:z49 z8,1; ATZ 1939, S. 446.PATENT CLAIM: Two-part iron brake body for freewheel brake hubs, characterized in that it consists of sintered iron and its surface is phosphated. Cited publications: German Patent Nos. 323 576, 651 216, 624 978, 661, 071; Danish Patent No. 51,695; Swiss Patent No. 212,099; U.S. Patent No. 2.: z49 z8.1; ATZ 1939, p. 446.
DEF704D 1942-10-06 1942-10-06 Two-part iron brake body for freewheel brake hubs Expired DE897661C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF704D DE897661C (en) 1942-10-06 1942-10-06 Two-part iron brake body for freewheel brake hubs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF704D DE897661C (en) 1942-10-06 1942-10-06 Two-part iron brake body for freewheel brake hubs

Publications (1)

Publication Number Publication Date
DE897661C true DE897661C (en) 1953-11-23

Family

ID=7082495

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF704D Expired DE897661C (en) 1942-10-06 1942-10-06 Two-part iron brake body for freewheel brake hubs

Country Status (1)

Country Link
DE (1) DE897661C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1505916B1 (en) * 1962-09-26 1971-10-14 Fichtel & Sachs Ag Freewheel hub with coaster brake

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE323576C (en) * 1920-08-02 Union Ges Fuer Metallindustrie Brake jacket for freewheel hubs
DE624978C (en) * 1934-07-15 1936-02-01 Schunk & Ebe Process for the production of porous bearing metals
DE651216C (en) * 1936-01-07 1937-10-09 Freix Ets Brake lining made of rigid individual friction links
DE661071C (en) * 1934-06-29 1938-06-10 Erwin Kramer Dr Ing Process for manufacturing self-lubricating bearings
CH212099A (en) * 1938-07-05 1940-10-31 Fichtel & Sachs Ag Expandable brake body provided with a flexible brake lining, especially for freewheel hubs.
US2249281A (en) * 1939-05-26 1941-07-15 Sk Wellman Co Cushioned clutch and facing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE323576C (en) * 1920-08-02 Union Ges Fuer Metallindustrie Brake jacket for freewheel hubs
DE661071C (en) * 1934-06-29 1938-06-10 Erwin Kramer Dr Ing Process for manufacturing self-lubricating bearings
DE624978C (en) * 1934-07-15 1936-02-01 Schunk & Ebe Process for the production of porous bearing metals
DE651216C (en) * 1936-01-07 1937-10-09 Freix Ets Brake lining made of rigid individual friction links
CH212099A (en) * 1938-07-05 1940-10-31 Fichtel & Sachs Ag Expandable brake body provided with a flexible brake lining, especially for freewheel hubs.
US2249281A (en) * 1939-05-26 1941-07-15 Sk Wellman Co Cushioned clutch and facing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1505916B1 (en) * 1962-09-26 1971-10-14 Fichtel & Sachs Ag Freewheel hub with coaster brake

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