DE8437897U1 - KIT FOR A BICYCLE FRAME MADE OF TUBES - Google Patents

Description

den Heyer, Cornells L., de Colignylaan 11, NL-6960 AB Eerbeek

"Kit for a bicycle frame made from drilling"

The innovation relates to a kit for connecting the tubes of a bicycle frame according to the preamble of the main claim.

In an older property right, which for the applicant does not belong to the state of the art, a generic Kit described in which openings are provided in the wall of one sleeve which have a diameter that corresponds to the outer diameter of the flared end of the to be connected Sleeve corresponds to the one to be connected Pipe parts are fixed to one another by welding.

The innovation is based on the task of the manufacturing process to improve and simplify the connection of the tubes in bicycle frames, at the same time maintaining or even increasing the desired strength.

This object on which the innovation is based is achieved in that from the cylinder wall the a sleeve, the inner diameter of the other sleeve to be connected with a frontal cable, adapted once eckendeart i ge bulges are formed on which now the socket of the other pipe with its open end can be applied with a fretting seat.

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According to the innovation, it is sufficient to fix this joint by brazing and trials have shown that even with long-lasting vibration tests, this type of connection has excellent strength, but at the same time can be manufactured inexpensively.

Advantageous refinements of the innovation are explained in the subclaims.

An embodiment of the innovation is shown below described with reference to the drawings. the Drawings show in

Fig. 1 shows a bicycle in a corresponding frame and corresponding socket connections, i η

Fig. 2 shows the connection of the head tube with the top tube and the down tube, in

Fig. 3 the connection of the pedal bearing housing

with the Sat te istutζ tube and the down tube and i η

4 shows the connection of the seat post with the top tube.

In Fig. 1, 1 generally denotes a bicycle, which has a bicycle frame, which is supported by a head tube 2, a top tube 3, a seat post 4, a Unterroh.- 5 and a pedal bearing housing is formed. In the connection area of the head tube 2 with the top tube 3, a so-called upper link sleeve 7 is provided. In the connection area of the head tube 2 with the down tube 5 a so-called lower link sleeve 8 is provided,

* t

t I *

• 1 * 14

while in the connection area of the top tube 3 with the Satte I stut ζ pipe 4 a central sleeve 9 is arranged is.

In the drawing it can also be seen that the Down tube 5 and the Sat te I stut ζ tube 4 as well using appropriate sleeve-like components to the pedal bearing housing 6 connects.

From Fig. 2 it can be clearly seen that two types of sleeves are created, namely a sleeve kj_ which is created by expanding the associated pipe, with an additional Einsteckendea rti ge bulge C_ is provided, the outer diameter of which corresponds to the inner diameter of the sleeve, which is provided at the end of the pipe to be connected to the pipe described above.

In Fig. 2 this arrangement is in connection with the head tube 2, the top tube 3 and the down tube 5 shown. The top tube 3 and the down tube 5 each have sleeves £ which are widened are and the inner diameter of the expanded part is chosen so that it is with a press fit the plug-like bulges £ attached can be.

In Fig. 3 it can be seen that also in the bottom bracket

; _: housing 6 corresponding plug-in end-like bulging

r exercises £ are provided on which the lower

: Ends of the seat post 4 and the down tube

r
ί 5 can be put on.

Π Finally, Fig. 4 shows that at the top of the

Seat post tube A a sleeve A ^ is provided, ie a sleeve that has a plug-in bulge £, the open end of the sleeve E3 of the top tube 3 being placed on this bulge _C_.

IHe connection of the to be connected to each other The pipes via a brazed joint is made of Drawing not closed for reasons of clarity separate.

At this point it should be noted that the sleeves ^ and j3 are only achieved by expanding the associated pipe end, so are not used as a separate component and that when expanding the sleeves ^ the corresponding ti nsteckendeartigen bulges C_ can be produced.

Claims (3)

PATENT Attorney · **: * ":" I · '* · posiWwSh sw. D-4400 MÜNSTER 2o.12.84 DIPL-INQ. H.-g. HABBEL . '\. _: '., * A. rS ^ MY FILE: j (please specify) _{H 11ο / 1ο164} j den Heyer, Cornells L., de Colignylaan 11, NL-6960 AB Eerbeek "Kit for a bicycle frame made of tubes" Protection claims: . Kit for the connection of the tubes forming a bicycle frame in the area of their crossing points, whereby a socket is created in the end area of the tube by widening the pipe jacket and one socket connects with its end face to the outside of the socket of the pipe to be connected and mat eria I is conclusively determined is characterized by insert-end-like bulges (C) which are formed from the cylinder wall of one socket (A) and match the inside diameter of the other socket (B) to be connected at the end. 2. Kit according to claim 1, characterized zei chnet that the sleeves (A) formed at the ends of the head tube (2) by widening ι »ι · "I" 111! are provided with the bulges (C) and the ends in the top tube (3) and down tube (5) the socket-like bulges (B) formed towards the control tube (2) (C) the sleeves (A) overlap. 3. Kit according to claim 1 and 2, characterized in that in the saddle support tube (4) in the connection area with the top tube (3) the sleeves (A) the einsteckendearti -; e bulge (C) aufweidt and the top tube (3) with its socket (B) engages over the plug-in-like bulge (C). it. Kit according to one or more of the preceding claims, characterized in that plug-in end-like bulges (C) are provided in the bottom bracket housing (6), which are provided by the tubes (4) supported at the lower ends of the down tube (5) and the seat tube (4) Sockets (B) are gripped over. S. Kit according to one or more of the preceding claims, characterized in that the connection between the individual pipes in the area of their sockets (A, B) and there in the area of the plug-in-like bulges (.C) overlapped by the sockets (B) Brazing is done.