Pipes and tubular conduits – Combined – With end structure
Patent
1997-09-17
2000-12-05
Brinson, Patrick
Pipes and tubular conduits
Combined
With end structure
138120, 285242, 285420, F16L 900, F16L 3302
Patent
active
061553026
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is based on an attachment arrangement for a fuel line on a connector.
One such attachment arrangement is known from German Patent Disclosure DE 42 24 981. In it, the fuel line is secured to a connector of a component of a fuel supply system. Fuel lines may be embodied either as plastic tubes or as flexible hoses, but tubes are cheaper than hoses. When tubes are used, the connector typically has a plurality of collars, protruding from its outer circumference and spaced apart from one another in the direction of its longitudinal axis, and is embodied in Christmas-tree form. The tube can be attached to the connector by being slipped onto in the direction of its longitudinal axis; this is intended to prevent the tube from slipping off or being pulled off by the collars, which dig into the tube in clawlike fashion, and at the time is intended to attain sealing. It has been found that in this attachment arrangement, after severe heating of the tube, adequate sealing is no longer assured because the tube widens in a lasting way. In addition, while the tube can be held on the connector by means of a hose clamp, this clamp has to be constructed in a complicated way, in order to distribute the pressure uniformly over the circumference of the tube, and it is time-consuming to assemble.
SUMMARY OF THE INVENTION
Accordingly, it is an object of present invention to provide an attachment arrangement of the above mentioned general type, which avoids the disadvantages of the prior art.
In keeping with these objects and with others which will become apparent hereinafter, one feature of present invention resides, briefly stated, in an attachment which has a fuel line formed as a plastic tube, a connector provided with a plurality of collars and an elastically widenable bush, wherein in accordance with the present invention the connector and the bush are made of the same plastic and the fuel line is composed of a rigid tube.
The attachment arrangement of the invention for a mounting a fuel line on a connector has the advantage over the prior art that the fuel line can still be attached in a simple way by being slipped onto the connector, and the tightness is assured by the bush. The bush can be disposed on the fuel line even before the fuel line is slipped onto the connector, and it widens elastically when the fuel line is slipped on, so that once the fuel line is disposed on the connector, an additional exertion of pressure by the bush is obtained. By the further embodiment of the fuel line, the bush is fixed in a simple way in the direction of the longitudinal axis of the connector.
BRIEF DESCRIPTION OF THE DRAWING
An exemplary embodiment of the invention is shown in the drawing and described in further detail below.
FIG. 1 shows a connector and a fuel line to be attached to it;
FIG. 2 shows the fuel line in a cross section taken along the line II--II of FIG. 1; and
FIG. 3 shows the connector with the fuel line mounted on it.
DESCRIPTION OF THE PREFERRED EMBODIMENT
An attachment arrangement for a fuel line on a connector, shown in FIGS. 1-3, can be provided for instance in a fuel supply system by which fuel is fed from a tank to the internal combustion engine of a motor vehicle. The connector 10 can be disposed for instance on a supply assembly 11, not shown, or on arbitrary other components of the fuel supply system. The connector 10 may be of metal, or preferably of fuel-resistant plastic.
The connector 10 has a plurality of collars 14, spaced apart from one another in the direction of its longitudinal axis 12 and protruding outward from its outer circumference. The collars 14 each have a chamfer 16, oriented toward the free end of the connector 10, and on their opposite ends they heave have a shoulder 18 disposed approximately perpendicular to the longitudinal axis 12. The connector 10 thus has a so-called Christmas-tree profile on its outer circumference. It may be provided that at the closest collar 14a, the free end of the connector 10 protrudes less far from the out
REFERENCES:
patent: 1138946 (1915-05-01), Elliott
patent: 2260454 (1941-10-01), Hedeman
patent: 3653692 (1972-04-01), Henson
patent: 3891250 (1975-06-01), Oetiker
patent: 3938237 (1976-02-01), Dunz
patent: 4367705 (1983-01-01), Oeth
patent: 4603890 (1986-08-01), Huppee
patent: 4790569 (1988-12-01), Chaffee
patent: 4826477 (1989-05-01), Adams
patent: 5082315 (1992-01-01), Sauer
patent: 5148792 (1992-09-01), Tuckey
patent: 5365906 (1994-11-01), Deweerdt
patent: 5469829 (1995-11-01), Kleppner et al.
patent: 5735554 (1998-04-01), Imgam
European Patent Application 652397 A Mogavero, Nov. 1994.
PCT Pub WO 91/05159 Harde, Sep. 1990.
Fischerkeller Rolf
Wuerl Wolfgang
Brinson Patrick
Robert & Bosch GmbH
Striker Michael J.
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