CH193510A - Method of connecting the tubes of bicycle frames. - Google Patents

Method of connecting the tubes of bicycle frames.

Info

Publication number
CH193510A
CH193510A CH193510DA CH193510A CH 193510 A CH193510 A CH 193510A CH 193510D A CH193510D A CH 193510DA CH 193510 A CH193510 A CH 193510A
Authority
CH
Switzerland
Prior art keywords
tubes
sleeve
frame
bicycle frames
connection
Prior art date
Application number
Other languages
German (de)
Inventor
Triplex S A
Original Assignee
Triplex S A
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 Triplex S A filed Critical Triplex S A
Publication of CH193510A publication Critical patent/CH193510A/en

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
    • B62K19/00Cycle frames
    • B62K19/18Joints between frame members
    • B62K19/20Joints between frame members welded, soldered, or brazed

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Description

  

  Verfahren Verbinden der Rohre von Fahrradrahmen.    Die bisher gebräuchlichen und bekannten  Verfahren zum Verbinden der Rohre von  Fahrradrahmen bestehen darin, dass die Rohre  entweder stumpf zusammengeschweisst oder  unter Verwendung von Muffen hart gelötet  werden.  



  Obschon geschweisste Rahmen bekannt  lich ebenso haltbar und eher elastischer als  hartgelötete sind, werden letztere in der  Schweiz nur wegen dem solideren Aussehen  den andern vorgezogen.  



  Vorliegende Erfindung bezweckt, ein Ver  fahren zu     schaffen,    nach welchem die Rahmen  rohre unter Vermeidung einer Verwendung  von Muffen derart verbunden werden, dass die  fertige Verbindung die Form einer Muffen  verbindung hat.  



  Gemäss der Erfindung wird auf die Enden  der den Rahmen bildenden Rohre eine Hülse  aufgeschoben, die einerseits mit dem Rahmen  rohr selbst und anderseits mit der Hülse am  Ende des mit ihm zu verbindenden Rahmen  rohres durch     Schweissung    oder     Hartlötung    so  verbunden wird, dass die fertige Verbindung    die Form einer Muff     enverbindung    hat. Die  Hülsen verstärken zugleich die Rohrenden  und erleichtern das Verbinden derselben ge  genüber solchen mit einfacher Wandung.  



       Das,    Verfahren gemäss der Erfindung sei  anhand der Zeichnung in zwei Beispielen er  läutert.  



       Fig.    1 und 2 zeigen eine unfertige und  eine fertige Verbindung an der Lenkerschaft  hülse;       Fig.    3 zeigt eine Verbindung am Tretlager.  Im ersten Falle werden auf die Enden  der Rahmenrohre<I>A</I> und<I>B</I> die Hülsen C und  D aufgeschoben. Damit sich die Hülse C auf  dem Rohr A nicht verschieben kann, werden  Hülse und Rohr an der Stelle F durch     Schwei-          ssung    miteinander verbunden. Ausserdem wer  den das Rohr B und die Hülse D an der  Stelle     ,E    gleichzeitig miteinander und mit der  Hülse C verschweisst.  



  Im zweiten Fall werden die Hülsen     g,    L  und     M    sowohl mit den Rohren J, H und     (1     als auch untereinander durch     Verschweissung     mit der     Tretlagerhülse    0 verbunden.      In allen Fällen können die Hülsen auf  die Rohrenden aufgeschrumpft werden.  



  An Stelle der     Schweissung    könnte auch  eine Hartlösung an den Verbindungsstellen  stattfinden.



  Method of joining the tubes of bicycle frames. The previously common and known methods for connecting the tubes of bicycle frames consist in that the tubes are either butt welded together or hard-soldered using sleeves.



  Although welded frames are known to be just as durable and more elastic than brazed ones, the latter are preferred to others in Switzerland only because of their more solid appearance.



  The present invention aims to provide a method according to which the frame tubes are connected while avoiding the use of sleeves in such a way that the finished connection has the form of a sleeve connection.



  According to the invention, a sleeve is pushed onto the ends of the tubes forming the frame, on the one hand with the frame tube itself and on the other hand with the sleeve at the end of the frame tube to be connected to it by welding or brazing so that the finished connection is the Has the form of a socket connection. The sleeves also reinforce the pipe ends and facilitate the connection of the same ge compared to those with a simple wall.



       The method according to the invention is explained in two examples with reference to the drawing.



       1 and 2 show an unfinished and a finished connection on the handlebar stem; Fig. 3 shows a connection on the bottom bracket. In the first case, the sleeves C and D are pushed onto the ends of the frame tubes <I> A </I> and <I> B </I>. So that the sleeve C cannot move on the pipe A, the sleeve and pipe are connected to one another at point F by welding. In addition, who the tube B and the sleeve D at the point, E welded together and with the sleeve C at the same time.



  In the second case, the sleeves g, L and M are connected to the tubes J, H and (1 as well as to each other by welding with the bottom bracket sleeve 0. In all cases, the sleeves can be shrunk onto the tube ends.



  Instead of welding, a hard solution could also take place at the connection points.

 

Claims (1)

PATENTANSPRUCH: Verfahren zum Verbinden der Rohre von Fahrradrahmen, dadurch gekennzeichnet, dass auf die Enden der den Rahmen bildenden Rohre eine Hülse geschoben wird, die einer seits mit dem Rahmenrohr selbst und ander seits mit der Hülse am Ende des mit ihm zu verbindenden Rahmenrohres durch Schwei- ssung oder Hartlötung so verbunden wird, dass die fertige Verbindung die Form einer lYIuffenverbindung hat. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Hülsen auf die En den der den Rahmen bildenden Rohre auf geschrumpft werden. Claim: A method for connecting the tubes of bicycle frames, characterized in that a sleeve is pushed onto the ends of the tubes forming the frame, which on the one hand with the frame tube itself and on the other hand with the sleeve at the end of the frame tube to be connected to it by welding - solution or brazing is connected in such a way that the finished connection has the shape of a socket connection. SUBCLAIM: Method according to claim, characterized in that the sleeves are shrunk onto the ends of the tubes forming the frame.
CH193510D 1937-01-23 1937-01-23 Method of connecting the tubes of bicycle frames. CH193510A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH193510T 1937-01-23

Publications (1)

Publication Number Publication Date
CH193510A true CH193510A (en) 1937-10-15

Family

ID=4438908

Family Applications (1)

Application Number Title Priority Date Filing Date
CH193510D CH193510A (en) 1937-01-23 1937-01-23 Method of connecting the tubes of bicycle frames.

Country Status (1)

Country Link
CH (1) CH193510A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744465C (en) * 1939-02-16 1944-01-17 Nsu Werke Ag Process for the production of a welded frame, especially for two-wheeled vehicles, such as bicycles, motorcycles and the like. like
EP0048403A3 (en) * 1980-09-18 1983-05-11 J. U. W. Muller Maschinen- Und Armaturen-Fabrik Gmbh Process for joining metallic sectional parts by soldering

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744465C (en) * 1939-02-16 1944-01-17 Nsu Werke Ag Process for the production of a welded frame, especially for two-wheeled vehicles, such as bicycles, motorcycles and the like. like
EP0048403A3 (en) * 1980-09-18 1983-05-11 J. U. W. Muller Maschinen- Und Armaturen-Fabrik Gmbh Process for joining metallic sectional parts by soldering

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