DE2742551C2 - For filling a liquid, preferably fuel, into a container provided with a filler neck, preferably a motor vehicle tank, a plastic pouring pipe which can be fastened to a canister - Google Patents

Description

The invention is based on one of the filling J5 a liquid, preferably fuel, into a container provided with a filler neck, preferably a motor vehicle tank, serving, attached to a canister pouring pipe made of plastic, the two separate pipe parts formed by axially parallel crimping on both sides of the pouring pipe wall has, at least in the area of the

pt filler neck of the container to be inserted end of the

ώ the pouring pipe while maintaining its wall thickness

Γ introduced into this on both sides, parallel to each other

ί, and grooves perpendicular to the pipe axis

,, hen are.

There are such plastic pouring pipes known as, rigid pipes that have a

^{J have a} protruding collar that serves to hold the

Pouring pipe using a union nut with the outlet nozzle of the canister by screwing j, to connect. Has the other end of the pouring tube

an arcuately bent leg which is inserted into the inlet nozzle of the motor vehicle tank. ^

J These well-known rigid arcuate pouring pipes

have the disadvantage that, in order to be able to obtain the bent leg, a large amount of material is wasted of about 75%. On the other hand, the rigid leg cannot easily be inserted

Introduce different inlet nozzles of the different types of motor vehicles, so that the canister with raised the pouring pipe and rotated many times around the end of the pouring pipe inserted into the filler neck must be to allow emptying of the canister.

In order to avoid these disadvantages inherent in the known rigid pouring pipes, it is already done known (DE-GM 74 39 047), at least in the area of the end to be inserted into the filler neck of the container of the pouring pipe while maintaining its wall thickness on both sides in this introduced, transversely to To provide pipe axis directed grooves which are arranged such that the grooves of a pipe part to half the pitch are offset from the grooves of the other pipe part. These well-known Pouring pipes can be produced with practically no loss of material, and due to the staggered arrangement of the Grooves of the two pipe parts are given a flexibility of the pouring pipe that an introduction of the pouring pipe into the filler neck of the fuel tank without causing difficult movements of the canister required are. As a result of the staggered arrangement of the grooves of the two pipe parts results in the Separation point is a zigzag-shaped, narrow pinch seam through which the two pipe sections along their entire length are connected to each other. The flexibility of this known pouring pipe is satisfactory and enables the pouring pipe to be properly inserted into the filling opening; the bendability of the pouring pipe is however, because of the existing pinch seam, it is not absolutely the same in every direction, so that it is, for example in the case of particularly tight curvatures of the filler neck it may be useful to place the pouring pipe in such a Position on the canister to be arranged in which it is with the area of its greatest flexibility of curvature of the Filler neck can follow.

The invention has for its object to improve the known pouring pipe so that it is in each Bending direction has an absolutely constant bendability.

This object is achieved in a pouring pipe according to the preamble of the main claim in that the outer vertices of the grooves of the two pipe parts lie in planes perpendicular to the pipe axis, that the outer vertices of the two pipe parts in the region of the separation point have a distance, and that the both pipe parts to their? free; · end by one integrally formed, known per se, projecting in the axial direction annular collar are connected.

Another feature is that distributed over the length of the two pipe parts several thread-like Transverse webs are provided which are opposite one another in the region of the separation point of the two pipe parts Connect the outer apex of the grooves in one piece.

If the grooves of the two pipe parts are arranged without mutual offset, the result is at the point of separation a two-dimensional diamond-shaped pinch seam that increases the flexibility of the pouring pipe to a considerable extent degrades. The fact that at the point of separation the outer apex of the grooves of the two pipe parts at a distance are arranged to each other, there is the possibility of removing the strip-shaped pinch seam formed, so that the two pipe parts are completely separated from each other even at the point of separation, as a pinch seam is no longer given. As a result, a flexibility of the pouring pipe is achieved, which in each Bending direction is absolutely the same. By the arranged at the free end of the two pipe parts Ring collar these are held together so that they inevitably into the filler neck of the fuel tank to be introduced. To allow a bend in the two separate pipe sections in different directions prevent it, it is advisable, through appropriate training of the two for the production of the pouring pipe

required formhauit:.! single outer vertex to connect the two pipe parts by thread-like crosspieces, which in no way reduce the flexibility is adversely affected.

The drawing shows an example of Au-ifüii; form the invention. It shows the

F i g. 1 a representation of the pouring pipe, which in his; - "· front part has two separate pipe parts with co-running grooves;

F i g. Figure 2 is an enlarged view of part of the grooved pipe section;

Fig.; vrir.in section along line AA of FIG. 2;

F i g. 4 i a section according to line C-D of FIG. 2.

The F i g. 1 shows a cast pipe 1 made of thermoplastic material in the blow path, which is attached to the free end of its cylindrical part is provided with a protruding annular flange 2, which the Receiving a union nut, not shown, for connection to a union nut, also not shown Fuel canister is used. The other end of the cylindrical pouring pipe 1 is squeezed in on both sides, see above that two parallel pipe parts 6.7 result.

On the pipe part 6 are directed perpendicular to the axis, adjoining grooves 4 and 4 the tubular part 7 applied the same grooves 5. The grooves 4 and 5 are aligned with each other, so that at the pinch point the apices of the individual grooves 4, 5 are opposite one another. In the crushing point, the outer apex 8, 9 (based on the respective Rohrteilachu :) of the grooves 4, 5 a mutual Distance, so that there is a strip-shaped pinch seam 11, the naditragür * in a sinfsdte way, for example by punching, is removed, so d ^ B die br Jen pipe parts 6, 7 at the pinch point about their entire length are separated from each other and only viuicr. the free end of the pipe part 6, 7 molded collar 10 are held together. As the F i g. 1 and 3 show are single exterior

ίο vertex 8, 9 of the pipe parts 6, 7 by thread-like Cross webs 12 connected to one another. This prevents the between the cylindrical part of the Pouring pipe 1 and the annular collar 10 lying pipe parts 6, 7 in a bend in different Directions can bend. The tubular parts 6, 7 are held together by the thread-like Qiierstege 12, without the flexibility being adversely affected. Like F i g. 2 shows, the inner vertices of the Pipe parts 6, 7, which lie on the inside of the respective pipe wall, be flattened.

The 3 and 4 show sections through the pipe section 3 with the pipe parts -i>, 7. Like the Drawings show the two pipe idle 6, 7 are on the pinch point completely separated from each other and are only separated by the at intervals along the length distributed thread-like transverse webs 12, which can have a diameter of about 0.5 mm, held together, so that they cannot bend against each other in different directions.

1 sheet of drawings

Claims (2)

Patent claims: 1. The filling of a liquid, preferably Fuel, in a container provided with a filler neck, preferably a motor vehicle tank, Serving, attached to a canister pouring pipe made of plastic, the two separate, through Has pipe parts formed on both sides axially parallel pinches of the pouring pipe wall, wherein at least in the area of the end of the pouring pipe to be inserted into the filler neck of the ι ο container while maintaining its wall thickness on both sides in this introduced, mutually parallel and grooves directed perpendicular to the pipe axis are provided, characterized in that the ii outer apex (8, 9) of the grooves (4, 5) of the two pipe parts (6, 7) perpendicular to the pipe axis directed planes lie that the outer apex (8, 9) of the two pipe parts (6, 7) in the area of Separation point have a distance, and that the two Roiirteile (6, 7) at their free end an integrally formed, known per se, in the axial direction protruding ring collar (10 are connected. 2. Pouring pipe according to claim 1, characterized in that over the length of the two pipe parts (6, 7) distributed several thread-like transverse webs (12) are provided, which are in the area of the separation point two pipe parts opposite outer apices (8, 9) of the grooves (4, 5) in one piece connect with each other. M.