FR2495273A1 - FLEXIBLE HOSE WITH AXIS CAN COME AT LEAST ONE CURVED SEGMENT - Google Patents

Abstract

Flexible pipe whose axis can follow a curvilinear segment. It comprises at least one section 3 made of relatively deformable material and a means such as a split sleeve 4 to be mounted on this section in order to maintain it in the position where it follows the curvilinear segment. Application, inter alia, as a pipe connecting the fuel introduction chute to the fuel tank of a motor vehicle. (CF DRAWING IN BOPI)

Description

The present invention relates to a flexible hose of which 1 '

  axis may come to espouse at least one curvilinear segment,

  particularly for use as a profiled hose for

  rope between a fuel introduction chute and a tank located under the body of a motor vehicle. It is known that the laying of a non-rectilinear pipe in

  a receiving location may raise large difficulties

  particularly when the pipe has many sections

  There are fixed gaps, which is the case, for example, in the application mentioned above;

  indeed, in this application, the profiled pipe, in

  metal, bent so as to have the desired shape, is usually necessarily mounted before assembly of the various elements located under the vehicle body, such as

  wheels, exhaust pipe, etc., which raises difficulties

  during assembly and makes it very difficult to replace

possible investment.

  The object of the present invention is to propose a flexible hose which is free from the aforementioned disadvantages, that is to say capable of being laid down and deposited rapidly and

  simple, without any rigid connection resulting from its

  tion, and manufactured relatively simply and economically.

  According to the present invention, there is provided a flexible hose

  whose axis can come to espouse at least one segment

  viligne, characterized in that it comprises at least a section of a relatively deformable material and means to be placed on said section to maintain it in the position where it

marries said curvilinear segment.

  To better understand the present invention, we will

  now describe in detail one embodiment, at

  of non-limiting example, with reference to the drawings

on which

  FIG. 1 is a side elevational view with cutaway

  pes of a hose segment made according to the present invention; Figure 2 is a sectional view along the line II-II of Figure 1; Figure 3 is an exploded side elevational view, with section, of a section of the pipe according to Figure 1; and FIG. 4 is, in elevation, a sectional side view of one end of the pipe according to FIG.

a particular application.

  In Figures 1 and 2, we see, designated by the reference

  this general 1, ie flexible hose according to the present invention,

  made of a material which is

  plastic material, by high-density polyethylene. The pipe includes seals

  interposed between sections in sf in which

  the wall-u-uyau 1 is wavy, drawing u ie bulges and grooves. The pipe of a pipe is used without any solution. . and constituting the cylindrical sections 2 and the bellows sections 3. On each of the bellows sections 3 is: a sleeve 4, having the curvature to be given to the sections 3 and presenting: side slot 5 which gives it a section C (Figure 2) and

  Pern: and to deform it by spreading it with its sides for the po-

  ser ,. the way of a -a + elastic elastic, on the section with

  flech 3. The manchn 4 also has side windows

  7 qli! 5allesse is ralsed in u.n. . -avantageuse-

  Maaiare las-iu.e rigid enough.-To keep a pre-established farm. While 'one of the extrem-itsD non-rer.sente cu pipe seo the fiu.re 1 may have ra formze uecoue vouue to form a raccorld, i other extreme pre-ente a re-edge of large diameter 8 which defines internally u annular sitge 9.

  Thus, the pipe 1 is made of advanced plastics material

  It has been molded by blow molding, so as to have a straight shape, which makes the manufacture more comfortable and more economical. In addition, on bellows sections 3,

  poses, by putting them sideways (Figure 3), the man-

  4 which have the curvature to be conferred on the said sections 3,

  so that the flexible pipe 1 takes the configuration pro

  desired yarn and can therefore be mounted in the desired position, then coupled to its ends relatively easily,

  since the cylindrical sections 2 are also

  deformable. Alternatively, in case of major difficulties

  laying, it is possible, without using the sleeves 4, to give the

  flexible pipe 1 the desired configuration by deforming

  denies its various sections 2 and 3 and, finally, once

  the pipe placed at the end of the day, we can put the man-

  4 so that it stably maintains its position.

  As shown in Figure 4, the pipe 1 can be placed on a chute 11 ensuring the introduction of fuel

  in a reservoir (not shown and connected to the other end

  pipe tee 1) of a motor vehicle; in particular, the pipe may be placed on any inlet trough intended to introduce into an associated fuel tank

for internal combustion engine.

  In fact, in the end rim 8 of the pipe 1 is inserted

  and coupled to the pipe 1 a pipe section 14, advantageously

  relatively rigid plastic material; in the re-

  front outer edge of this section 14 is inserted and ac-

  coupled the end of the chute 11 which has on its section before an annular collar 16 bearing, by its lower part, on an annular seal 17 housed in an annular depression 18 formed in the vehicle body to receive the chute 11. On the inside of the collar 16 start toothed segments 20 able to hold on

  elastically on a bent inner edge 21 of the depressed-

  In addition, the chute presents a partition

  its interior 22, pierced with a hole 23 of appropriate shape to receive and immobilize a plug (of known type, no

  shown) closing the chute 11 ..

  The tightness of the connections between the chute 11 and the section 14 and between the latter and the pipe 1 is advantageously

  obtained by means of external fastening and sealing

  24, surrounding the large diameter ledges and

  contiguous features inserted in it, and advantageously

  bricks by direct molding on said contiguous sections.

  It is therefore possible to insert the chute 11 from the outside of the vehicle body, by elastically hooking the toothed segments 20 on the inner rim 21, and thus coupling it

in section 14 or pipe 1.

  The foregoing discussion makes obvious the advantages:

  installation and economic manufacture offered by the flexible hose according to the present invention, in addition to that of ensuring a perfect seal, since the hose 1 is

  reinforced by the sleeves 4 precisely at the level of

3, with less resistance.

  Finally, it goes without saying that it will be possible to bring to the embodiment described and illustrated various modifications and

  variations, without departing from the scope of the invention.

  For example, the chute 11 can be secured to the section 14 (Figure 4) or the connections of the chute 11 with the section 14 and the latter with the pipe 1 can

  be assured in a different way, for example by

  age, etc. Sleeves 4 can also be of different shape.

  pension; finally, the bellows sections can cover the entire

  pipe 1 and then be rigidified by means of the man-

4, at the desired places.

  In the particular application of the pipe to the supply of

  fuel in a tank located under the body of the vehicle

  the automobile, said tank can be placed at the most convenient place, because there is no difficulty in giving the connection pipe a particular configuration or even a

relatively long length.

Claims (12)

  1. Hose (1) with axis that can fit at least one curvilinear segment, characterized in that it comprises at least one section (3) of relatively deformable material, and means (4) to be placed on said section (3). ) to preserve the position in which she marries said curvilinear segment. 2. Pipe according to claim 1, characterized in that   said section (3) is made as a bellows.   3. Pipe according to claim 1 or 2, characterized in that said means (4) are made of a material more rigid than said section (3) and are able to maintain a pre-established form.   4. Pipe according to any one of the preceding claims   cedeentes, characterized in that said means (4) have a configuration similar to that of sleeves and lend themselves to   be placed on said section (3).   5. Pipe according to claim 4, characterized in that said sleeves (4) have a lateral opening (5) in   view of the laying on said section (3).   6. Pipe according to any one of the preceding claims   cedentes, characterized in that said section (3) is made   in one piece with said pipe.   Pipe according to any one of the preceding claims   cedentes, characterized in that it is made of plastics relatively flexible tick.   Pipe according to any one of the preceding claims   cedentes, characterized in that it includes sections relating to   more rigid (2) arranged on both sides of the said section (3).   Pipe according to any one of the preceding claims   cedentes, characterized in that it comprises a terminating part   (14, 11) connecting to a mouth of said pipe, la-   said end portion (14, 11) being made of plastics   more rigid than the one forming said pipe (1) and   both a tight connection with the pipe.   10. Pipe according to claim 9, characterized in that said end portion (11, 14) has elastic coupling means (20) ensuring its coupling with said mouth.   Pipe according to one of the claims   preceding, characterized in that it is arranged between a   fuel introduction chute (11) for a combustion engine   internal combustion and a reservoir of reptio- this fuel. 12. Pipe according to the 11th complaint;   au'i! is mounted on the body of a vehicle that is self- mobile.