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
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
- B62K19/18—Joints between frame members
- B62K19/20—Joints 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)
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)
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 |
-
1937
- 1937-01-23 CH CH193510D patent/CH193510A/en unknown
Cited By (2)
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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