DE4328349A1 - Dividable bicycle with a frame made from light-alloy die casting or plastic die casting - Google Patents

Dividable bicycle with a frame made from light-alloy die casting or plastic die casting

Info

Publication number
DE4328349A1
DE4328349A1 DE19934328349 DE4328349A DE4328349A1 DE 4328349 A1 DE4328349 A1 DE 4328349A1 DE 19934328349 DE19934328349 DE 19934328349 DE 4328349 A DE4328349 A DE 4328349A DE 4328349 A1 DE4328349 A1 DE 4328349A1
Authority
DE
Germany
Prior art keywords
frame
die casting
bicycle
divisible
light
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.)
Withdrawn
Application number
DE19934328349
Other languages
German (de)
Inventor
Hermann Dr Ing Klaue
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 DE19934328349 priority Critical patent/DE4328349A1/en
Publication of DE4328349A1 publication Critical patent/DE4328349A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/02—Cycle frames characterised by material or cross-section of frame members
    • B62K19/04—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity
    • B62K19/12—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity having cast members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/02—Cycle frames characterised by material or cross-section of frame members
    • B62K19/16—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/18—Joints between frame members
    • B62K19/24—Screwed joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/02—Frames
    • B62K3/10—Frames of single-beam type, i.e. connecting steering head to rear axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B62K2015/001—Frames adapted to be easily dismantled

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

The novel bicycle, which comprises halves which can be separated parallel to the seat tube, is made from light-alloy die casting or plastic die casting. In order to design the main casting cores for producing the two frame halves such that they are not divided and in order to be able to do without complicated machining, the frame halves are designed in a manner such that they have the largest cross-section in the plane of separation. <IMAGE>

Description

Um Abstellplatz einzusparen und Transport des Fahrrades im Kofferraum eines Kraftwagens zu ermöglichen, sind Klappräder vorgeschlagen worden, welche sich wegen ihrer durch den erforderlichen Klappmechanismus verkleinerten Rahmenfestigkeit nicht allgemein einführen konnten. Auch bedingt der Klappmechanismus einen vergrößerten Gewichts- und Kostenaufwand.To save parking space and transport the bike in the trunk of a motor vehicle, folding bikes have been proposed which is due to its required folding mechanism could not generally introduce reduced frame strength. Also the folding mechanism causes an increased weight and Expense.

Die Erfindung hat sich zur Aufgabe gesetzt, die Nachteile von Klapprädern zu beseitigen, dabei jedoch deren Vorteil eines geringeren Platzbedarfs durch Teilung des Rahmens beizubehalten und durch eine Zweiteilung des Rahmens eine insgesamt einfachere Herstellung und beispielsweise durch Verwendung von faserverstärktem Polyurethan oder Magnesium als Gußwerkstoff Gewichtsvorteile gegenüber einteiligen Standardrahmen zu erzielen.The invention has set itself the task of the disadvantages of folding bikes eliminate, but thereby their advantage of a smaller footprint by To maintain division of the framework and by dividing the Frame an overall simpler manufacture and, for example, by Use of fiber reinforced polyurethane or magnesium as Cast material weight advantages compared to one-piece standard frame achieve.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. In weiterer Ausbildung der Erfindung wird zur Aufnahme der auf den zusammengesetzten Rahmen einwirkenden Verwindungskräfte die Trennebene zwischen den beiden Rahmenteilen mit einem beim Zusammensetzen ineinandergreifenden, druckgegossenen Längsprofil ausgerüstet. Dadurch wird infolge der erheblichen Längenausdehnung dieser Formschlußverbindung die für ein auch sportlich eingesetztes Fahrrad wichtige Verdrehsteifigkeit erzielt. In noch weiterer Ausbildung der Erfindung kann durch Anordnung eines hinter dem Sattelstützrohr angegossenen, mit verschließbarem Deckel ausgerüsteten Behälters eine geschützte Unterbringung für Luftpumpe, Stabbatterie und persönliche Gegenstände geschaffen werden.This object is achieved by the characterizing features of claim 1 solved. In a further embodiment of the invention is used to accommodate the composite frame acting torsional forces Parting plane between the two frame parts with a Assembling interlocking, die-cast longitudinal profile equipped. This is due to the considerable length expansion of this Form-fit connection that for a sporty bike important torsional rigidity achieved. In yet another embodiment of the invention can be arranged with a cast on behind the seat post tube lockable lid equipped container a protected Accommodation for air pump, stick battery and personal items be created.

ln den Abbildungen ist mit 1 das Rahmenvorderteil, welches das Vorderrad 2 trägt, gekennzeichnet. Es geht vorn in den Steuerkopf 5 über, an dem Federgabel 15 und Lenker 16 befestigt sind. Das Rahmen-Hinterteil 3 mit Sattelstützrohr-Bohrung 6 sowie dem ebenfalls angegossenen Behälter 14 trägt das Hinterrad 4. Das Rahmen-Hinterteil trifft in der Trennebene 7 mit seinen Hohlräumen 8, 9, 10 an der Stelle des größten Querschnitts des Hohlraums 8 mit dem Hohlraum 11 des Rahmenvorderteils zusammen.In the figures, 1 denotes the frame front part which carries the front wheel 2 . It merges into the control head 5 , to which the suspension fork 15 and handlebar 16 are attached. The rear frame part 3 with the seat tube bore 6 and the also cast-on container 14 carries the rear wheel 4 . The frame rear part meets in the parting plane 7 with its cavities 8 , 9 , 10 at the location of the largest cross section of the cavity 8 with the cavity 11 of the frame front part.

Durch diese Gestaltung wird eine große Steifigkeit des zusammengesetzten Rahmens gewährleistet und zum anderen die Erzeugung beider Gußteile im Druckgußverfahren ermöglicht.This design creates a great rigidity of the composite Guaranteed frame and on the other hand the production of both castings in Die casting process enables.

Zur kraftschlüssigen Verbindung und zur Trennung beider Fahrradhälften dient im Hinterteil 3 des Rahmens eine im Druckgußverfahren angebrachte, im Grunde abgerundete Aussparung 17, in welche im zusammengesetzten Zustand ein Fortsatz 18 des Rahmenvorderteils 1 eingreift. For non-positive connection and separation of the two halves of the bicycle frame used in the back part 3 is mounted in the die-casting process, basically rounded recess 17 into which in the assembled condition, an extension 18 of the frame front member 1 engages.

Unterhalb der Tretlagerbohrung ist, wie Fig. 4 in vergrößertem Maßstab zeigt, ein Fortsatz 19 am Rahmenhinterteil 3 angebracht, auf dem sich der mit zwei nebeneinander angebrachten Bohrungen 20 ausgerüstete Arm 21, auf zwei Stiftschrauben 22 geschoben, abstützt. Die beiden selbstsichernden Muttern 23 aufgeschraubt, beenden den Vorgang des Zusammensetzens beider Rahmenteile. Beim Aufdrücken des Armes 21 des Rahmenvorderteiles auf Stiftschrauben 22 und Fortsatz 19 wird gleichzeitig die Verankerung der beiden Rahmenteile im Längsprofil 12 vorgenommen.Underneath the bottom bracket bore, as shown in FIG. 4 on an enlarged scale, an extension 19 is attached to the rear frame part 3 , on which the arm 21 equipped with two bores 20 arranged next to one another, supported on two stud bolts 22 , is supported. The two self-locking nuts 23 screwed on, finish the process of assembling the two frame parts. When the arm 21 of the frame front part is pressed onto the stud bolts 22 and extension 19 , the two frame parts are anchored in the longitudinal profile 12 at the same time.

Beim umgekehrten Vorgang des Trennens der beiden Radhälften werden die Muttern 23 gelöst, das Rahmenhinterteil mit einer Hand am angegossenen Griff 24 erfaßt und das Rahmenvorderteil durch Zug am Haltegriff 25 des Rahmenvorderteils vom Hinterteil gelöst. Die in den Rahmenrohren gekapselt untergebrachten Bowdenzüge für die Kettenschaltung müssen derart bemessen sein, daß beide voneinander gelösten Fahrradhälften aufeinandergelegt werden können, ohne daß die Bowdenzüge gelöst zu werden brauchen. Die beiden Muttern 23 mit Stiftschrauben können zur Vereinfachung des Zusammensetzens und Auseinandernehmens auch durch einen Spannbügel ersetzt werden.In the reverse process of separating the two wheel halves, the nuts 23 are loosened, the frame rear part is gripped with one hand on the cast-on handle 24 and the frame front part is released from the rear part by pulling on the handle 25 of the frame front part. The Bowden cables for the derailleur system, encapsulated in the frame tubes, must be dimensioned in such a way that the two halves of the bicycle can be placed on top of one another without the Bowden cables having to be released. The two nuts 23 with studs can also be replaced by a clamp to simplify assembly and disassembly.

Claims (3)

1. Teilbares Fahrrad mit aus Leichtmetall- oder Kunststoff-Druckguß hergestelltem Rahmen, dadurch gekennzeichnet, daß der aus Vorderteil (1) mit Vorderrad (2) sowie Hinterteil (3) mit Hinterrad (4) bestehende Rahmen in Richtung Steuerkopf (5) vor der Sattelrohrbohrung (6) parallel zu letzterer eine Trennebene (7) aufweist, in welcher der Hohlraum (8) des Rahmenhinterteiles (3), mit dem die Hinterradgabelhohlräume (9 und 10) verbunden sind, sowie der Hohlraum (11) des Rahmenvorderteils (1) mit ihrem größten Querschnitt zusammentreffen.1. Divisible bicycle with frame made of light metal or plastic die-casting, characterized in that the front part ( 1 ) with front wheel ( 2 ) and rear part ( 3 ) with rear wheel ( 4 ) frame in the direction of the control head ( 5 ) in front of Seat tube bore ( 6 ) parallel to the latter has a parting plane ( 7 ) in which the cavity ( 8 ) of the rear frame part ( 3 ), to which the rear fork hollow spaces ( 9 and 10 ) are connected, and the cavity ( 11 ) of the front frame part ( 1 ) meet with their largest cross-section. 2. Teilbares Fahrrad, nach Anspruch 1, dadurch gekennzeichnet, daß zur Aufnahme der auf den zusammengesetzten Rahmen einwirkenden Verwindungskräfte die Trennebene (7) mit einem Längsprofil (12) ausgerüstet ist.2. Divisible bicycle, according to claim 1, characterized in that for receiving the torsional forces acting on the composite frame, the parting plane ( 7 ) is equipped with a longitudinal profile ( 12 ). 3. Teilbares Fahrrad, nach Anspruch 1 und 2, dadurch gekennzeichnet, daß in Fahrtrichtung hinter dem Sattelrohr (6) ein das hintere Schutzblech (13) tragender, durch einen Deckel abschließbarer Behälter (14) angegossen ist, welcher zur Aufnahme von Luftpumpe, Werkzeug, Stabbatterie und persönlichen Gegenständen dient.3. Divisible bicycle, according to claim 1 and 2, characterized in that in the direction of travel behind the seat tube ( 6 ) a rear fender ( 13 ) carrying, lockable by a lid container ( 14 ) is molded, which for receiving air pump, tool Battery, stick battery and personal items.
DE19934328349 1993-08-24 1993-08-24 Dividable bicycle with a frame made from light-alloy die casting or plastic die casting Withdrawn DE4328349A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934328349 DE4328349A1 (en) 1993-08-24 1993-08-24 Dividable bicycle with a frame made from light-alloy die casting or plastic die casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934328349 DE4328349A1 (en) 1993-08-24 1993-08-24 Dividable bicycle with a frame made from light-alloy die casting or plastic die casting

Publications (1)

Publication Number Publication Date
DE4328349A1 true DE4328349A1 (en) 1995-03-02

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ID=6495831

Family Applications (1)

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DE19934328349 Withdrawn DE4328349A1 (en) 1993-08-24 1993-08-24 Dividable bicycle with a frame made from light-alloy die casting or plastic die casting

Country Status (1)

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DE (1) DE4328349A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890504A1 (en) * 1997-07-08 1999-01-13 Jean Mege Bicycle frame made of plastic and/or composite material
DE19927996A1 (en) * 1999-06-18 2001-01-04 Luebeck Andreas bicycle
FR2870202A1 (en) * 2004-05-14 2005-11-18 Michel Manissol Bicycle, has pedal assembly and spring, where tensioning of spring permits rolling of components of bicycle and spring is then loosened, and derailleur system permitting operation of synergic wheel
WO2018114155A1 (en) * 2016-12-22 2018-06-28 Plastic Innovation Gmbh Method for producing a bicycle frame

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR936218A (en) * 1945-11-22 1948-07-13 Cycle improvements
DE1980076U (en) * 1967-10-18 1968-02-29 W F Poppe & Sohn K G SMALL MOTORCYCLE.
DE3804342A1 (en) * 1988-02-12 1989-08-24 Klaue Hermann Bicycle produced from die-cast light metal or injection-moulded thermoplastic

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR936218A (en) * 1945-11-22 1948-07-13 Cycle improvements
DE1980076U (en) * 1967-10-18 1968-02-29 W F Poppe & Sohn K G SMALL MOTORCYCLE.
DE3804342A1 (en) * 1988-02-12 1989-08-24 Klaue Hermann Bicycle produced from die-cast light metal or injection-moulded thermoplastic

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890504A1 (en) * 1997-07-08 1999-01-13 Jean Mege Bicycle frame made of plastic and/or composite material
FR2765853A1 (en) * 1997-07-08 1999-01-15 Jean Mege BIKE FRAME IN PLASTIC AND / OR COMPOSITE MATERIAL IN AT LEAST TWO PARTS WITH A JOINT PLAN PERPENDICULAR TO THE FRAME PLAN
DE19927996A1 (en) * 1999-06-18 2001-01-04 Luebeck Andreas bicycle
FR2870202A1 (en) * 2004-05-14 2005-11-18 Michel Manissol Bicycle, has pedal assembly and spring, where tensioning of spring permits rolling of components of bicycle and spring is then loosened, and derailleur system permitting operation of synergic wheel
WO2018114155A1 (en) * 2016-12-22 2018-06-28 Plastic Innovation Gmbh Method for producing a bicycle frame

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Legal Events

Date Code Title Description
8125 Change of the main classification

Ipc: B62K 15/00

8110 Request for examination paragraph 44
8139 Disposal/non-payment of the annual fee