DE842901C - Telescopic front fork for bicycles and similar vehicles - Google Patents

Telescopic front fork for bicycles and similar vehicles

Info

Publication number
DE842901C
DE842901C DEP49567A DEP0049567A DE842901C DE 842901 C DE842901 C DE 842901C DE P49567 A DEP49567 A DE P49567A DE P0049567 A DEP0049567 A DE P0049567A DE 842901 C DE842901 C DE 842901C
Authority
DE
Germany
Prior art keywords
tubes
front fork
support tubes
fork
bicycles
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
DEP49567A
Other languages
German (de)
Inventor
Ernst Kumlehn
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEP49567A priority Critical patent/DE842901C/en
Application granted granted Critical
Publication of DE842901C publication Critical patent/DE842901C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00Axle suspensions
    • B62K25/04Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/06Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
    • B62K25/08Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for front wheel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2201/00Springs used in cycle frames or parts thereof
    • B62K2201/04Helical springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Description

Teleskop-Vorderrad-Gabeln sind seit langer Zeit in verschiedenen Ausführungsformen bekannt, jedoch Sind alle bekannten Gabeln dieser Art mit Nachteilen behaftet, die einer Verwendung.für Fahrräder hinderlich sind. Ein wesentlicher -Nachteil bekannter Teleskop-Gabeln besteht darin, daß sie sich nicht an jedem handelsüblichen Fahrradrahmen anbringen lassen, sondern infolge der Eigenart ihrer Konstruktion an besondere Rahmenkonstruktionen, zum mindesten an bestimmte Schaftrohrlängen, gebunden sind. Darüber hinaus sind die meisten bekannten Teleskop-Gabeln in ihrem Aufbau für Fahrräder viel zu schwer und zu kostspielig. Aus diesem Grunde sind daher Fahrräder in der Praxis kaum jemals mit federnden Teleskop-Vorderrad-Gäbeln ausgestattet worden.Telescopic front forks have long been in various designs known, however, all known forks of this type have disadvantages, the a use. for bicycles are a hindrance. A major disadvantage of well-known Telescopic forks mean that they cannot be attached to every commercially available bicycle frame can be attached, but due to the peculiarity of their construction on special frame constructions, at least to certain shaft tube lengths. In addition, are Most of the known telescopic forks are far too heavy in their construction for bicycles and too expensive. For this reason, bicycles are hardly ever in practice equipped with resilient telescopic front forks.

Die Erfindung bringt auf diesem Gebiet einen erheblichen Fortschritt, und zwar besteht der Erfindungsgedanke im wesentlichen darin, daß die durch einen das Vorderrad überbrückenden Bügel starr miteinander- verbundenen Federbeine auf an der Unterseite des Gabelkopfes befestigten, die Federn enthaltenden Rohren verschiebbar gelagert sind. Diese Anordnung der Federbeine ermöglicht es, den Gabelkopf und insbesondere dessen Schaftrohr in üblicher Weise und in jeder Länge auszubilden, so daß die Gabel nach der Erfindung an jedem handelsüblichen Fahrradrahmen angebracht werden kann. Auch bleibt die herkömmliche Form der Fahrradgabel weitgehendst erhalten.The invention brings considerable progress in this area, namely, the idea of the invention consists essentially in the fact that the by a the front wheel bridging bracket rigidly interconnected suspension struts attached to the underside of the fork head, the springs containing tubes slidably are stored. This arrangement of the struts allows the clevis and in particular its shaft tube in the usual way and in any length, so that the fork according to the invention can be attached to any commercially available bicycle frame. The conventional shape of the bicycle fork is also largely retained.

Ein weiterer wesentlicher Vorteil der neuen Federgabel besteht in ihrem einfachen Aufbau und der dadurch erzielten erheblichen Kostenersparnis gegenüber den bekannten Teleskop-Gabeln.Another major advantage of the new suspension fork is their simple structure and the considerable cost savings achieved as a result the well-known telescopic forks.

Die beim Auf- und Abwärtsfedern frei nach außen tretenden Gleitflächen der am Gabelkopf befestigten Rohre und die oberen Enden der Federbeine sind erfindungsgemäß von Schutzrohren umgeben, die ebenso wie die inneren Rohre am Gabelkopf befestigt sind und die Gleitflächen vor Staub, Schmutz und Witterungseinflüssen schützen.The sliding surfaces that move freely outwards during upward and downward springing the tubes attached to the fork head and the upper ends of the struts are according to the invention surrounded by protective tubes which, like the inner tubes, are attached to the fork head and protect the sliding surfaces from dust, dirt and weather influences.

In der Zeichnung ist die Erfindung an einem Ausführungsbeispiel veranschaulicht. Es zeigt Abb. I eine Seitenansicht eines Teils des Fahrrads mit Teleskop-Vorderradfederung im Schnitt durch ein Federbein, Abb. II eine Vorderansicht der Anordnung nach Abb. I.In the drawing, the invention is illustrated using an exemplary embodiment. Fig. I shows a side view of part of the bicycle with telescopic front suspension in section through a strut, Fig. II a front view of the arrangement according to Fig. I.

In dem dargestellten Ausführungsbeispiel bezeichnen a den Fahrradrahmen, b das Vorderrad und c die Vorderradachse. Nach der Erfindung sind die durch einen das Vorderrad b überbrückenden Bügel f starr miteinander verbundenen Federbeine d und e auf an der Unterseite des Gabelkopfes m befestigten Rohren l verschiebbar gelagert. In den Rohren L sind die Hauptfedern k angeordnet, deren untere Enden gegen die Scheiben h anliegen, welche auf in den Federbeinen befestigten Stiften g angeordnet sind. In den oberen Enden der Hauptfedern k sind Ringmuttern p befestigt, in die die Gewindeschäfte der I)rukschrauben n eingeschraubt sind, die im GabeIköpf drehbar gelagert und durch je einen Stift o gegen Herausdrücken gesichert sind. Durch Drehen der Druckschrauben"n - kann somit die Spannung der Hauptfedern k beliebig verstellt werden.In the illustrated embodiment, a denotes the bicycle frame, b the front wheel and c the front wheel axle. According to the invention, the suspension struts d and e , which are rigidly connected to one another by a bracket f bridging the front wheel b, are slidably mounted on tubes l attached to the underside of the fork head m. In the tubes L, the main springs k are arranged, the lower ends of which bear against the disks h, which are arranged on pins g fastened in the spring struts. In the upper ends of the main springs k, ring nuts p are attached, into which the threaded shafts of the I) screwing screws n are screwed, which are rotatably mounted in the GabeIköpf and each secured by a pin o against being pushed out. The tension of the main springs k can thus be adjusted as required by turning the pressure screws "n".

Durch die bis auf den Durchmesser der Haltestifte g eingezogenen Enden der Tragrohre L wird ein Herausfallen.,der Federbeine beim Demontieren des Vorderrads verhindert: Außergewöhnlich starke Stöße nach unten oder nach oben werden durch die Zusatz- oder Dämpfungsfedern i und j aufgenommen, von denen die ersteren i zwischen den eingezogenen Enden. der Rohre l und `den Scheiben J97 ühd die letzteren j zwischen den eingezogenen Enden der Rohre L und den in den Federbeinen d und e befestigten Trägern der Haltestifte g liegen.The ends of the support tubes L, which are retracted up to the diameter of the retaining pins g, prevent the struts from falling out when the front wheel is dismantled: Extraordinarily strong impacts downwards or upwards are absorbed by the additional or damping springs i and j, of which the the former i between the drawn-in ends. of the tubes 1 and the washers J97 ühd the latter j lie between the drawn-in ends of the tubes L and the supports of the retaining pins g fastened in the struts d and e.

Die beim Auf- und Abwärtsfedern frei nach außen tretenden Gleitflächen der Tragrohre L und die'oberen Enden der Federbeine d und e sind von Schutzrohrei.'q umgeben, die zentrisch zu den Rohren l an der Unterseite des Gabelkopfes m befestigt sind.The sliding surfaces that move freely outwards during upward and downward springing the support tubes L and die'oberen ends of the struts d and e are from Schutzrohrei.'q surrounded, which is attached centrically to the tubes l on the underside of the fork head m are.

Claims (5)

PATENTANSPRÜCHE: 1. Teleskop-Vorderrad-Gabel für Fahrräder 'und"' ähnliche Fahrzeuge, dadurch gekennzeichnet, daß die durch einen das Vorderrad (b) überbrückenden Bügel (f) starr miteinander verbundenen Federbeine (d, e) auf an der Unterseite des Gabelkopfes (m) befestigten, die Federn (k) enthaltenden Rohren (l) verschiebbar gelagert sind. PATENT CLAIMS: 1. Telescopic front wheel fork for bicycles 'and''' similar vehicles, characterized in that the struts (d, e) rigidly connected to one another by a bracket (f) bridging the front wheel (b) on the underside of the fork head (M) fastened tubes (l) containing springs (k) are slidably mounted. 2. Vorderradgabel nach Anspruch i, dadurch gekennzeichnet, daß die beim Auf- und Abwärtsfedern nach außen tretenden Gleitflächen der Tragrohre (l) und die oberen Enden der Feder= beine (d, e) von Schutzrohren (q) umgeben sind, die zentrisch zu den Tragrohren (l) an der Unterseite des Gabelkopfes (m) befestigt sind. 2. Front fork according to claim i, characterized in that the sliding surfaces of the support tubes (l) and the upper ends of the spring legs (d, e) are surrounded by protective tubes (q) which are centrically to the support tubes (l) are attached to the underside of the fork head (m). 3. Vorderradgabel nach Anspruch i, dad gekennzeichnet, daß die in den Tragrohren (t) angeordneten Schraubenfedern (k) am oberen Ende Ringmuttern (p) für die im Gabelkopf (m) drehbar angeordneten Stellschrauben (n) tragen. 3. Front fork according to claim i, dad characterized in that the helical springs (k) arranged in the support tubes (t) carry ring nuts (p) at the upper end for the adjusting screws (n) rotatably arranged in the fork head (m). 4. Vorderradgabel nach Anspruch i, dadurch gekennzeichnet, daß die unteren Enden der Tragrohre (L) bis etwa auf den Durchmesser der in den Federbeinen (d, e) befestigten Haltestifte (g) eingezogen sind. 4. Front fork according to claim i, characterized in that that the lower ends of the support tubes (L) to about the diameter of the in the The retaining pins (g) attached to the spring struts (d, e) have been retracted. 5. Vorderradgabel nach Anspruch i und 4, dadurch gekennzeichnet, daß oberhalb und unterhalb der eingezogenen unteren Enden der Tragrohre (l) Dämpfungsfedern (i und y) angeordnet sind. Angezogene Druckschriften: Deutsche Patentschriften Nr. 4M 622, 612 564, 701859; schweizetische Patentschriften Nr. 223 239, 260223. 5. Front fork according to claim i and 4, characterized in that above and below the retracted lower ends of the support tubes (l) damping springs (i and y) are arranged. Cited publications: German Patent Specifications No. 4M 622, 612 564, 701 859; Swiss patent specifications No. 223 239, 260223.
DEP49567A 1949-07-22 1949-07-22 Telescopic front fork for bicycles and similar vehicles Expired DE842901C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP49567A DE842901C (en) 1949-07-22 1949-07-22 Telescopic front fork for bicycles and similar vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP49567A DE842901C (en) 1949-07-22 1949-07-22 Telescopic front fork for bicycles and similar vehicles

Publications (1)

Publication Number Publication Date
DE842901C true DE842901C (en) 1952-07-03

Family

ID=7383842

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP49567A Expired DE842901C (en) 1949-07-22 1949-07-22 Telescopic front fork for bicycles and similar vehicles

Country Status (1)

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DE (1) DE842901C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078794A1 (en) * 2011-07-07 2013-01-10 Bayerische Motoren Werke Aktiengesellschaft Undamped fork leg, especially for a fork of a motorcycle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE411622C (en) * 1923-12-30 1925-04-02 Victoria Werke A G Fa Spring front fork for motorcycles
DE612564C (en) * 1933-04-14 1935-04-27 Fisker & Nielsen As Motorcycle fork
DE701859C (en) * 1937-06-15 1941-01-25 Karl Mayr Suspension front fork
CH223239A (en) * 1942-01-31 1942-08-31 Stuber Hans Wheel suspension device for bicycles.
CH260223A (en) * 1943-02-08 1949-02-28 Oesch Hans Spring-loaded telescopic wheel fork for vehicles.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE411622C (en) * 1923-12-30 1925-04-02 Victoria Werke A G Fa Spring front fork for motorcycles
DE612564C (en) * 1933-04-14 1935-04-27 Fisker & Nielsen As Motorcycle fork
DE701859C (en) * 1937-06-15 1941-01-25 Karl Mayr Suspension front fork
CH223239A (en) * 1942-01-31 1942-08-31 Stuber Hans Wheel suspension device for bicycles.
CH260223A (en) * 1943-02-08 1949-02-28 Oesch Hans Spring-loaded telescopic wheel fork for vehicles.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078794A1 (en) * 2011-07-07 2013-01-10 Bayerische Motoren Werke Aktiengesellschaft Undamped fork leg, especially for a fork of a motorcycle
EP2543584A3 (en) * 2011-07-07 2017-12-27 Bayerische Motoren Werke Aktiengesellschaft Non-dampened fork leg, in particular for the fork leg of a motorcycle

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