FR2663691A3 - Structure for connecting pipes - Google Patents

Abstract

a) Structure for connecting pipes. b) Structure characterised in that the first pipe is equipped at its end (3) with an eccentric annular groove (31) including, in the lowermost position, an axial slit (32) in communication with the surface of the end, whereas the other pipe (4) is equipped, on its internal surface, with a stop-piece (41) exhibiting the same length as the annular groove of the first pipe and the same width as the axial slit of this first pipe. c) The invention relates to a structure for connecting pipes.

Description

"Structure for connecting pipes".

  The present invention relates to a structure

to connect pipes.

  It is found that the pipes are generally connected together by welding, riveting or the like, of

  so it's very painful to make the connection.

  As a result, we have developed different ways to connect pipes to meet this need,

  but none of these means is satisfactory.

  According to the prior art, one of these means in which the inner pipe 1 comprises a radial cavity II of progressively increasing depth in which is housed a sliding element 12 adapted to the radial cavity 11, then the outer pipe 2 is placed on the inner pipe 1 and the outer pipe 2 is rotated in the direction indicated in the

  figure 3 to fix it to the inner pipe 1.

  However, this device does not prevent the axial movement of the pipes and it is difficult to

  check the length of overlap of the pipes.

  The present invention therefore aims to create a pipe connection structure which allows

  reduce and eliminate the above drawbacks

  above. The main object of the present invention is to create a pipe connection structure which allows the pipes to be connected securely and quickly together. This structure is characterized in that the first pipe is provided at its end with an eccentric annular groove having, in the lowest position, an axial slot in communication with the surface of the end, while the other pipe is provided, on its inner surface, with a stop having the same length as the annular groove of the first pipe and the same width as the

axial slot of this first pipe.

  Another object of the present invention is to create a pipe connection structure which makes it possible to easily engage the pipes in one another and

  to detach them from each other easily.

  Yet another object of the present invention is to create a pipe connecting structure which

is simple to implement.

  Yet another object of the present invention is to create a pipe connecting structure which

is easy to make.

  Other objects and advantages of the present invention will be better understood by those skilled in the art.

  the question on reading the detailed description

  and preferred embodiments referring to the accompanying drawings in which: Figure 1 is an exploded view showing a pipe connection structure according to the prior art, Figure 2 is a partially cut away view of the pipe connection structure pipes according to the prior art, Figure 3 is a sectional view showing the principle of the structure according to the prior art for connecting pipes, Figure 4 is an exploded view of a pipe connection structure according to the present invention , Figure 5 is a partially cut away view showing the connecting structure of pipes assembled according to the present invention, Figure 6 is a partially cut away view showing that the connecting structure of pipes has been assembled, Figure 7 is a sectional view showing the assembly operation carried out between the views of FIGS. 5 and 6,

  Figure 8 is a sectional view along line B-

  B of Figure 7, and Figures 9 to 13 are sectional views showing other preferred forms of

  realization of the present invention.

  Referring to the drawings and more particularly to FIG. 4 thereof, the pipe connection structure according to the present invention is provided, at the end of a pipe 3, with an eccentric annular groove 31 comprising, in the position the lowest, an axial slot 32 in communication with the surface of the end. According to the connection structure of the pipes, a stop 41 is formed on the interior surface of the other pipe 4, the length and the width of this stop being respectively equal to the length of the groove

  annular 31 and the width of the slot 32.

  When connecting the two pipes 3 and 4, we first align the slot 32 of the pipe 3 with the stop of the pipe 4, then push the pipe 3 and the pipe 4 towards each other by sliding the stop 41 in the lowest position of the annular groove 31 after passing this stop 41 through the slot 32 to bring it into contact with the side wall 33 of the annular groove 31 (see Figures 5 and 6) We do then turn the two pipes 3 and 4 in opposite directions so as to move the stop 41 along the annular groove 31 As the annular groove 31 is eccentric relative to the pipe 3, the stop 41 comes to tighten tightly therein when '' it is rotated by a twisting movement along the annular groove 31 (see Figures 7 and

8).

  Figure 7 shows that the stop 41 of the pipe 4 is moved to the lowest position of the annular groove 31 of the pipe 3 As illustrated in the figures, the structure only comprises two elements, namely the annular groove 31 with the slot 32 of the pipe 3, and the stop 41 of the pipe 4 which can be formed by machining or obtained suitably by molding. FIG. 9 shows another preferred embodiment in which the pipe 5 is provided, at its end, with a connector 53 having an eccentric annular groove 31, and the pipe 51

  comprises a nozzle 55 provided with an internal stop 54.

  As a result, this embodiment can be used for connecting long pipes and it is not

  necessary to modify pipes 5 and 51.

  FIG. 10 illustrates another preferred embodiment of the present invention in which a rod 6 is provided with a longitudinal hole

  to allow the passage of another rod 61.

  FIG. 11 illustrates yet another preferred embodiment in which the pipes 7 and 71 have the same diameter and are provided respectively

  a connector 72 and a tip 73.

  FIG. 12 illustrates yet another preferred embodiment of the present invention in which the pipe 8 has a protuberance 82 while the other pipe 81 has an eccentric groove 83 and a guide passage 81 adapted to the protrusion 82. FIG. 13 shows yet another preferred embodiment of the present invention which has a structure similar to that of the

  embodiment shown in Figure 9.

  The invention is naturally not limited in any way by the particular characteristics or details of embodiment indicated above by way of illustration. All variant embodiments of the above constituent elements or any equivalent technical means or combinations thereof may be envisaged. without departing from the scope of the invention.

Claims (1)

CLAIM   Structure for connecting pipes, structure characterized in that the first pipe is provided at its end (3) with an eccentric annular groove (31) having, in the lowest position, an axial slot (32) in communication with the surface of the end, while the other pipe (4) is provided, on its internal surface, with a stop (41) having the same length as the annular groove of the first pipe and the same width as the axial slot of this first pipe.