DE452839C - Pedal crank for bicycles - Google Patents

Pedal crank for bicycles

Info

Publication number
DE452839C
DE452839C DES72027D DES0072027D DE452839C DE 452839 C DE452839 C DE 452839C DE S72027 D DES72027 D DE S72027D DE S0072027 D DES0072027 D DE S0072027D DE 452839 C DE452839 C DE 452839C
Authority
DE
Germany
Prior art keywords
bicycles
pedal crank
hollow cylinder
disc
housing
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
DES72027D
Other languages
German (de)
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.)
PAUL SPENGLER
Original Assignee
PAUL SPENGLER
Publication date
Priority to DES72027D priority Critical patent/DE452839C/en
Application granted granted Critical
Publication of DE452839C publication Critical patent/DE452839C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Friction Gearing (AREA)

Description

Tretkurbel für Fahrräder. Es sind bereits Tretkurbeln für Fahrräder bekannt, die an einer Scheibe angeordnet sind. Letztere dreht sich in einem am Fahrradrahmen sitzenden Gehäuse, wobei das Zahnrad an der Scheibe mittels Schrauben befestigt ist. Diese Ausführung leidet aber an dem Übelstand, daß die Scheibe nur an ihrem Umfang durch eine einzige Kugelreihe abgestützt ist, so daß die achsialen Kräfte durch Gleitlager aufgenommen «erden müssen, wodurch höherer Kraftbedarf entsteht.Pedal cranks for bicycles. There are already pedal cranks for bicycles known, which are arranged on a disc. The latter rotates in one on the bicycle frame seated housing, with the gear attached to the disc by means of screws is. However, this version suffers from the disadvantage that the disc only on its Perimeter is supported by a single row of balls, so that the axial forces absorbed by sliding bearings «have to be grounded, which results in a higher power requirement.

Diesem Übelstand tritt die Tretkurbel für Fahrräder gemäß der Erfindung dadurch entgegen, daß das Gehäuse zur Aufnahme eines Hohlzylinders beiderseits Ringnuten für zwei Kugellagerkränze trägt, die durch zwei Ko--. nasse zweier durch einen Hohlzylinder verbundenen Scheiben gehalten werden. Hierbei ist die eine Scheibe als Kettenrad ausgebildet und besteht mit dem Hohlzylinder aus einem Stück, der am freien Ende Gewinde zur Verbindung mit der anderen Scheibe besitzt.This disadvantage occurs with the pedal crank for bicycles according to the invention opposed by the fact that the housing for receiving a hollow cylinder on both sides annular grooves for two ball bearing races, which are supported by two Ko--. wet two through a hollow cylinder connected discs are held. Here is one disc as a sprocket formed and consists of one piece with the hollow cylinder, the one at the free end Has thread for connection to the other disc.

In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel dargestellt, und zwar zeigt Abb. i eine Seitenansicht des Tretkurbellagers, Abb. 2 eine Vorderansicht und Abb.3 das Tretkurbellager auseinandergenommen im teilweisen Schnitt.In the drawing, the invention is shown in an exemplary embodiment, namely Fig. 1 shows a side view of the pedal crank bearing, Fig. 2 shows a front view and Fig.3 the crank bearing disassembled in partial section.

Die Scheibe a ist mit dem Hohlzylinder b fest verbunden. Die Scheibe c wird nach dem Einsetzen des Hohlzylinders b in das Gehäuse d mit Kugelkränzen e auf das Gewinde f des Zylinders b aufgeschraubt. An den Scheiben a und c sind die Kurbeln g angebracht. Die Scheibe a ist als Kettenrad lt. ausgebildet. Von diesem aus wird die Kraft auf das Hinterrad mittels Kette übertragen.The disk a is firmly connected to the hollow cylinder b. After the hollow cylinder b has been inserted into the housing d, the disk c is screwed onto the thread f of the cylinder b with ball races e. The cranks g are attached to the disks a and c. The disk a is designed as a chain wheel according to . From there, the power is transmitted to the rear wheel by means of a chain.

Die Wirkungsweise ist folgende: Von den Tretkurbeln g wird die Kraft auf die fest miteinander verschraubten Scheiben a und c übertragen. Der an der Scheibe a sitzende Zahnkranz n überträgt die Kraft mittels Kette auf das Hinterrad.The mode of operation is as follows: The force is generated by the cranks g transferred to the washers a and c, which are firmly screwed together. The one on the pane a seated sprocket n transfers the power to the rear wheel by means of a chain.

Der Vorteil dieser Vorrichtung ist der, daß bedeutend an Kraft gespart wird.The advantage of this device is that it saves a considerable amount of force will.

Claims (2)

PATENT ANsI'ltllcllli: i. Tretkurbel für Fahrräder mit einem in einem am Fahrradrahmen angeordneten Gehäuse drehbaren, das große Kettenrad tragenden Scheibenkörper, dadurch gekennzeichnet, daß das Gehäuse (d) beiderseits Ringnuten für zwei Kugellagerkränze (e) trägt, die durch zwei Konusse (a1, cl) zweier durch einen Hohlzylinder (b) verbundenen Scheiben (a, c) gehalten werden. . PATENT ANsI'ltllcllli: i. Pedal crank for bicycles with a disc body rotatable in a housing arranged on the bicycle frame and carrying the large chain wheel, characterized in that the housing (d) has annular grooves on both sides for two ball bearing rims (e), which are formed by two cones (a1, cl) two by one Hollow cylinder (b) connected disks (a, c) are held. . 2. Tretkurbel nach Anspruch i, dadurch gekennzeichnet, daß die eine Scheibe (a) als Kettenrad ausgebildet ist und mit dem Hohlzylinder (b) aus einem Stück besteht, der am freien Ende Gewinde zur Verbindung mit der anderen Scheibe (c) besitzt.2. Pedal crank according to claim i, characterized in that the one disc (a) acts as a chain wheel is formed and with the hollow cylinder (b) consists of one piece, the free End has threads for connection to the other washer (c).
DES72027D Pedal crank for bicycles Expired DE452839C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES72027D DE452839C (en) Pedal crank for bicycles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES72027D DE452839C (en) Pedal crank for bicycles

Publications (1)

Publication Number Publication Date
DE452839C true DE452839C (en) 1927-11-21

Family

ID=7502908

Family Applications (1)

Application Number Title Priority Date Filing Date
DES72027D Expired DE452839C (en) Pedal crank for bicycles

Country Status (1)

Country Link
DE (1) DE452839C (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471907A1 (en) * 1979-12-18 1981-06-26 Rubio Jean MOvable drive plates for bicycle - are fitted on either side of sprocket to drive it via cranks
DE4113833A1 (en) * 1991-04-27 1992-10-29 Josef Haefele Driving mechanism for bicycle - has chain wheel with connected ring bodies to carry pedals
ES2064236A2 (en) * 1992-11-18 1995-01-16 Morant Peyro Juan Bicycle drive system
DE19744118A1 (en) * 1997-10-06 1999-04-08 Matthias Frerck Pedal crank unit for cycles
FR2793761A1 (en) * 1999-05-19 2000-11-24 Paul Guilbard Crank gear for bicycle has bearings with diameter equal to diameter of driving plate
ES2153735A1 (en) * 1998-05-06 2001-03-01 Oroz Juan Felix Egues Improvements to the motor system in bicycles
JP2006264655A (en) * 2005-03-24 2006-10-05 Kunio Nitta Pedal rotation force increasing and bodily burden reducing device for bicycle
NL2001840C2 (en) * 2008-07-21 2010-01-22 3T Design Ltd Crank set for use in bicycle i.e. racing bicycle, has crankshaft provided with drive-side shaft end that is provided with mounting body on which drive side pedal crank and chain ring are mounted by utilizing releasable connection organs
FR2933952A1 (en) * 2008-07-16 2010-01-22 Francis Guet Bicycle, has crankset system with external spoke flanges serving as support for supporting plates and pedals, where crankset system is not provided with central hub, and fixation points of pedals are decentered
ITVI20120306A1 (en) * 2012-11-12 2014-05-13 Mario Giuseppe Moresco ASSEMBLY PEDESTAL FOR BICYCLES AND PEDAL MACHINES
IT202100030101A1 (en) * 2021-11-29 2023-05-29 Pamela Saporito Bicycle crankset

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471907A1 (en) * 1979-12-18 1981-06-26 Rubio Jean MOvable drive plates for bicycle - are fitted on either side of sprocket to drive it via cranks
DE4113833A1 (en) * 1991-04-27 1992-10-29 Josef Haefele Driving mechanism for bicycle - has chain wheel with connected ring bodies to carry pedals
ES2064236A2 (en) * 1992-11-18 1995-01-16 Morant Peyro Juan Bicycle drive system
DE19744118A1 (en) * 1997-10-06 1999-04-08 Matthias Frerck Pedal crank unit for cycles
ES2153735A1 (en) * 1998-05-06 2001-03-01 Oroz Juan Felix Egues Improvements to the motor system in bicycles
FR2793761A1 (en) * 1999-05-19 2000-11-24 Paul Guilbard Crank gear for bicycle has bearings with diameter equal to diameter of driving plate
JP2006264655A (en) * 2005-03-24 2006-10-05 Kunio Nitta Pedal rotation force increasing and bodily burden reducing device for bicycle
FR2933952A1 (en) * 2008-07-16 2010-01-22 Francis Guet Bicycle, has crankset system with external spoke flanges serving as support for supporting plates and pedals, where crankset system is not provided with central hub, and fixation points of pedals are decentered
NL2001840C2 (en) * 2008-07-21 2010-01-22 3T Design Ltd Crank set for use in bicycle i.e. racing bicycle, has crankshaft provided with drive-side shaft end that is provided with mounting body on which drive side pedal crank and chain ring are mounted by utilizing releasable connection organs
ITVI20120306A1 (en) * 2012-11-12 2014-05-13 Mario Giuseppe Moresco ASSEMBLY PEDESTAL FOR BICYCLES AND PEDAL MACHINES
WO2014072851A1 (en) * 2012-11-12 2014-05-15 Moresco Mario Giuseppe Crank assembly for bicycles and pedal-operated machines
IT202100030101A1 (en) * 2021-11-29 2023-05-29 Pamela Saporito Bicycle crankset

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