FR2853389A1 - Ventilation ducts connecting device, has tightening unit with support constituting plate folded to present central body placed with respect to external side of flange for cooperating with back side of corresponding flange - Google Patents

Abstract

The device has a tightening unit with a support (200) constituting plate folded to present a central body placed with respect to external side of flange (110) for cooperating with back side of the corresponding flange (100) or with back side of wall. The tightening unit has two end branches, each comprising a perpendicular part which passes through openings on the corresponding flange.

Description

The present invention relates generally to a device for

  connection of a ventilation duct to another duct or to a terminal, the device comprising a tubular body, one end of which is provided with a flange, adapted to cooperate with another flange of the other duct or with a wall of said terminal, the device comprising clamping means able to allow the clamping of the collar with the corresponding collar or with said wall.

  Figs. la and lb represent devices for connecting a ventilation duct according to the state of the art. With reference to FIG. 1a, in order to connect two sheaths Gi and G2, a sleeve M is conventionally introduced into one and the other end to be connected, then it is clamped by means of clamps C each end on the sleeve M. With reference to Fig. lb, to connect a sheath G to an air conditioning unit S, an end piece E is provided on the air conditioning unit S and the end of the sheath G is capped on the end piece E, then it is clamped by means a clamp C this end on the end piece E. The connections between sheaths or between sheath and terminal that allow the connection devices according to the prior art have the disadvantage of requiring a relatively long assembly time . Furthermore, they do not allow a sufficiently solid connection. An axial traction exerted on a sheath 20 can separate the latter from the sleeve M or the end piece E of the connection device.

  The present invention relates to a device for connecting a sheath which would solve this problem.

  To this end, it provides a device for connecting a ventilation duct to another duct or to a terminal, the device comprising a tubular body, one end of which is provided with a collar, adapted to cooperate with another collar. from the other sheath or with a wall of said terminal, the device comprising clamping means able to allow the clamping of the flange with the corresponding flange or with said wall, characterized in that the clamping means comprise at least one flange consisting of a plate folded so as to present a central body intended to be disposed vis-à-vis the external face of the flange to cooperate with the rear face of the corresponding flange or with the rear face of the wall and two end branches each comprising a part perpendicular to the central body forming a leg, the perpendicular parts being adapted to pass through an opening s made on the corresponding flange or in said wall.

  The connection of two sheaths or a sheath and a terminal such as an air conditioning unit is therefore made by assembling the respective assembly means 5 intervening at the ends to be connected to the sheaths or the terminal. The tubular body of the connection device can therefore be fixed immovably in the sheath, for example by gluing.

  According to another aspect of the present invention, the device comprises screwing means able to pass through another opening provided on the flange and a hole provided on the central body of said or each flange.

  Advantageously, the hole through which the screwing means pass is a slot opening at the periphery of the flange.

  According to another aspect of the present invention, said clamping means comprise at least one flange associated with a bolt.

  According to another aspect of the present invention, said clamping means comprise at least one flange, the central body of which is provided with a screwing means provided to cooperate with another screwing means.

  According to another aspect of the present invention, said clamping means comprise at least two flanges intervening in diametrically opposite zones of the flange.

  According to another aspect of the present invention, said clamping means comprise a plurality of flanges regularly spaced on the periphery of the flange.

  According to another aspect of the present invention, the openings made on the flange define between them a tongue, at least one of which is provided on its rear face with a retaining means intended to cooperate with the central body of a flange to allow holding the tubular body in place in said flange.

  Advantageously, an elastic seal is interposed between the two flanges.

  According to another aspect of the present invention, said openings made on the flange are slots opening out at the periphery of the flange.

  According to another aspect of the present invention, the size of the slots is adapted to allow the clamping maintenance of a flange.

  According to another aspect of the present invention, the flange is secured to the flange.

  According to another aspect of the present invention, the flange is secured by gluing to the flange.

  Advantageously, the flange is secured by overmolding on the collar.

  Advantageously, the flange constitutes the flange.

  According to another aspect of the present invention, the flange is a separate component from the flange.

  According to another aspect of the present invention, the perpendicular parts of said or each flange are respectively extended by two legs extending parallel to the central body, the legs being adapted to bear against the rear surface of the flange, the perpendicular parts through openings in the collar.

  According to another aspect of the present invention, said tubular body of said connection device is fixed in a non-removable manner in said sheath.

  According to another aspect of the present invention, said tubular body of said connection device is fixed by gluing.

  According to another aspect of the present invention, said tubular body of said connection device is fixed by means of clamps.

  According to another aspect of the present invention, the wall of said terminal comprises a connection orifice of said terminal and against which can be positioned a flange of a sheath to be connected to said terminal, two sets of openings being formed in said wall at the diametrically opposite on either side of said orifice, a first set of openings allowing the installation of a flange, the central body of which bears against the rear surface of the wall and the end branches of which pass through said wall, and a second set of openings 25 comprising a hole in which is embedded a nut capable of receiving a screw passing through a hole in said flange so that the head of the screw bears against the rear surface of said flange.

  The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being given in relation to FIGS. attached, among which: FIG. la is a schematic view showing the connection of two sheaths according to the state of the art FIG. lb is a schematic view showing the connection of a sheath to an air conditioning unit according to the prior art; Fig. 2a is a schematic side elevation view of a tubular element of a connection device according to the present invention; s Fig. 2b is a schematic perspective view of the tubular element of FIG. 2a according to the present invention; Fig. 2c is a schematic side elevation view of an alternative embodiment of a tubular element of a connection device according to the present invention; Fig. 2d is a schematic perspective view of the tubular element of FIG. 2c according to the present invention; Fig. 2e is a schematic side elevation view of an alternative embodiment of a connection device according to the present invention; Fig. 2f is a schematic perspective view of a connecting device of FIG. 2nd according to the present invention; Fig. 3a is a schematic side elevation view, on a larger scale, of a flange of a connection device according to the present invention; Fig. 3b is a schematic top view of the flange of FIG. 3a and a bolt of a connection device according to the present invention; Fig. 3c is a schematic side elevation view, on a larger scale, of an alternative embodiment of a flange of a connection device according to the present invention; Fig. 3d is a schematic top view of the flange of FIG. 3c and a screw of a connection device according to the present invention; Fig. 4 is a schematic view showing two sheaths being connected according to the present invention; Fig. 5 is a schematic view showing the connection of two sheaths according to the present invention; Fig. 6 is a schematic view showing a duct and an air conditioning box according to the present invention and; Fig. 7 is a schematic view showing the connection of a sheath and an air conditioning unit according to the present invention.

  With reference to Figs. 2a and 2b, a connection device for a sheath comprises a tubular body 100 provided at one of its ends with an assembly means such as a flange 110.

  As can be seen in FIG. 2b, sets of openings 120 are formed in the flange 110. These sets of openings are preferably two in number, and are arranged in diametrically opposite directions.

  Each set of openings 120 consists of a hole 122 framed by two slots 124 arranged parallel to each other and opening at the outer periphery of the flange 110. The slots 124 define between them a tongue 126.

  In at least one set of openings 120, the hole can be replaced by a slot 122 "as shown in the lower set of openings 120 in FIG. 2b in order to facilitate the mounting of a screwing means like this will be described later.

  With reference to Figs. 3a and 3b, the connection device for a sheath also comprises a flange 200 consisting of a plate 210 folded so as to present a central body 212 and two end branches each comprising a perpendicular part 214a, 214b to the central body 212 forming leg at the end of which a tab 216a, 216b extends outwardly parallel to the central body 212, as shown in Figs. 3a and 3b, or inwards parallel to the central body 212 in an alternative embodiment not shown.

  As can be seen in FIG. 3b, the central body 212 of the flange 200 is pierced with a hole 230 for mounting a screwing means such as a bolt 300 shown next to the flange 200 and consisting of a screw 310 and a nut 320.

  With reference to FIG. 4, the connection of two ends of two sheaths G1, G2 is produced by means of two tubular bodies 100 associated respectively with one and the other sheaths and with one or more flanges 200 and in particular two flanges 200.

  The diameter of the tubular bodies 100 is adapted to the introduction of the latter 30 into the sheaths G1 and G2 respectively by their ends opposite to the flanges 110. The tubular bodies 100 are fixed in the sheaths G1 and G2 respectively by bonding the inner surface from the end of each sheath on the periphery of the corresponding tubular body 100. The tubular bodies 100 can, in a variant embodiment not shown, be fixed respectively in the sheaths G1 and G2 by means of collars. The flanges 1 10, the diameter of which is greater than that of the sheaths, extend at the end of each of the sheaths, around the openings of the latter, and form means suitable for being assembled with each other to connect GI and G2 sheaths.

  A flange 200 and a bolt 300 are mounted around each tongue 126 of each flange 110 by accommodating the legs 214a, 214b of its branches in a pair of slots of a set of openings and by housing the screw of each bolt 300 in the hole in the central body 212 of the flange 200 and in the hole in the flange 110.

  The flange 200 is arranged so that the central body 212 is turned on the side 10 opposite to the sheath, the lugs 216a, 216b then being disposed at the rear of the flange 110. Each free tongue 126 is then housed at the the rear of the central body 212 of each flange 200 by a parallel movement of the collars 1 10 arranged opposite one another following in this way the trajectories indicated by the arrows A so as to make the tubular bodies 100 coaxial.

  In Fig. 5, the central body 212 of the flange 200 which is shown bears against the rear surface of one of the flanges 110, while the tabs 216a, 216b of this flange extend behind the rear surface of the other flange 110. The screw of a bolt 300 is threaded into the holes 122 of the flanges 110 facing each other and into the hole 230 of the flange. The head of the bolt 300 bears against the rear surface of the flange 110 along which the legs 216a, 216b of the flange 200 extend and the nut of the bolt is screwed onto the screw so as to bear against the rear surface from the central body 212 of the flange 200.

  A second flange 200 is fixed in the same way to the diametrically opposite part of the flanges 110.

  The assembly constituted by the flanges 200 and the bolts 300 forms a tightening means adapted to tighten the flanges 110 one against the other so as to hermetically connect the sheaths Gi and G2.

  Other flanges 200 associated with bolts 300 can be installed at each of the sets of openings 120 which are capable of being made to assemble sheaths whose diameter is relatively large. Whatever the number of flanges installed, it will be ensured that the latter are regularly distributed around the flanges 110. When several flanges are installed, the bolts 300 are screwed in turn so as to press against each other the two flanges 110. When the flanges installed are in even number, it will be noted that it is advantageous to alternate the mounting direction of the flanges 200. The fact that two flanges adjacent or located opposite are positioned in opposite directions, which means that their respective central bodies do not bear against the same flange 110, makes it possible to balance the clamping stresses applied to these flanges 110.

  It will be noted that the size of the slots 124 of a set of openings 120 which are described in FIG. 2b can be adapted to allow clamping of a flange to simplify the operation of connecting two ducts. The tubular bodies 100 can thus be delivered with their flanges in place, the flanges being provided with their bolts.

  With reference to FIG. 6, the connection of the end of a sheath G and of an air conditioning box S is carried out by means of a tubular body 100 associated with the end of the sheath G, of at least one flange as described with reference to Figs. 3a and 3b and at least one bolt.

  In the same way as described with reference to FIG. 4, the tubular body 100 1 5 is fixed in the sheath G by gluing, or by means of collars, so that the flange 110 extends at the end of this sheath. The corresponding assembly means of the air conditioning box S is constituted by a wall P of said air conditioning box S in which is formed an orifice O for connecting the box.

  At least one hole 122 'is made near the periphery of the orifice O of the box in which a nut 320 is embedded. There is also made at least one pair of slots 124' opening at the periphery of the orifice O, at level of a zone diametrically opposite the hole 122 '. A third slot 125 'also opening at the periphery of the orifice O is produced between the slots 124'.

  A flange 200 is mounted on the flange 110 in the same way as that described with reference to FIG. 4 by housing the legs of its branches in the slots of the collar 110.

  In Fig. 7, the central body of the flange 200 is placed behind the rear surface of the wall P of the casing S by threading the legs of the flange 200 into the slots 124 '. A bolt 300 is mounted so that the screw passes through the hole 122 of the flange 110 (with reference to Fig. 2b) and the hole 230 of the flange 200 (with reference to Fig. 3b).

  The bolt screw 300 can then take place in the slot 125 '. The bolt 300 is then screwed so as to clamp the flange 110 against the wall P of the box S. Another screw 310 is housed in a hole in the flange 110 disposed opposite the hole 122 'and the screw 310 is screwed in the nut embedded in the hole 122 ′, the head of the screw 310 bearing against the rear surface of the flange 110.

  The assembly constituted by the flange 200 and the bolts 300 forms clamping means allowing the clamping of the flange 110 against the wall P of the box S. It is thus possible to hermetically connect the sheath G to the box S. Other flanges can also be installed and thus replace the fixing by bolting without flange in the hole 122 '.

  It will be noted that in FIG. 7, the hole 122 'made in the wall P of the box S can be replaced by a radial slot opening into the orifice O. With reference to FIGS. 2c and 2d and 4, the tubular body 100 'constituting an alternative embodiment of that described above, comprises at the end of at least one tongue 126, and on its rear face, a retaining means 128, such that a step intended to cooperate with the central body 212 of a flange 200 described above to allow the tubular body 100 'to be held in place in said flange.

  With reference to FIG. 4, and by having an elastic seal between the two flanges 110, each flange 200, devoid of screwing means, can then cooperate with a tongue which is provided with a retaining means 128 to form a clamping means of a sheath vis-à-vis another similar sheath, this by compression of the elastic seal and by blocking of the retaining means 128 behind the central body 212 of each flange 200. The tongue 126 can also be bent forward of the collar 110 to constitute another elastic means.

  With reference to FIG. 3c, the central body 212 of the flange 200 'constituting an alternative embodiment of that described above, is provided with a screwing means such as a nut 320 fixed on the external face of the central body 212 and which is intended to cooperate with another screwing means such as a screw 310 in order to facilitate its mounting. It will be noted that the screwing means could consist of a tapping or a self-tapping hole passing through said central body 212.

  In an alternative embodiment of the connection device shown in Figs. 2e and 2f, the flange 200, 200 'is integral with the tubular body 100, 100'. The flange 200, 200 ′ may, for example, consist of a component overmolded or bonded to the flange 110 or be constitutive of the flange 110. The clamping of the flange is then effected by deformation of the central body 212 of the flange 200 or 200 'by the screwing means 300.

Claims (21)

  1) Device for connecting a ventilation duct to another duct or to a terminal, the device comprising a tubular body (100, 100 '), one end of which is provided with a collar (110) adapted to cooperate with a other flange (110) of the other sheath or with a wall (P) of said terminal, the device 5 comprising clamping means suitable for allowing the clamping of the flange (110) with the corresponding flange (110) or with said wall (P), characterized in that the clamping means comprise at least one flange (200, 200 ') constituted by a plate folded so as to present a central body (212) intended to be arranged opposite the outer face of the flange (110) for cooperating with the rear face of the corresponding flange (110) or with the rear face of the wall (P) and two end branches each comprising a perpendicular part (214a, 214b) to the central body (212) forming a leg, the parts s perpendicular (214a, 214b) being adapted to pass through openings (124, 125 ') made on the corresponding flange (110) or in said wall (P).   2) Device according to claim 1, characterized in that it comprises screwing means (300, 3 10) capable of passing through an opening (122, 122 ") provided on the flange (110) and a hole (230) provided on the central body.   3) Device according to claim 2, characterized in that the hole (122) through which pass the screwing means (300, 310) is a slot (122 ") 20 opening at the periphery of the flange (110).   4) Device according to claim 1, 2 or 3, characterized in that said clamping means comprise at least one flange (200) associated with a bolt (300).   5) Device according to claim 1, 2 or 3, characterized in that said clamping means comprise at least one flange (200 ') whose central body (212) is provided with a screwing means (320) provided for cooperate with another screwing means.   6) Device according to claim 2, 3 or 4, characterized in that said clamping means comprise at least two flanges (200, 200 ') acting in diametrically opposite zones of the flange (110).   7) Device according to claim 2, 3 or 4, characterized in that said clamping means comprise a plurality of flanges (200, 200 ') regularly spaced on the periphery of the flange (110).   8) Device according to any one of the preceding claims, 5 characterized in that the openings (124) delimit between them a tongue (126) at least one of which is provided on its rear face with a retaining means (128) intended to cooperate with the central body (212) of a flange (200, 200 ') to allow the tubular body (100') to be held in place in said flange.   9) Device according to claim 8, characterized in that an elastic seal 10 is interposed between the two flanges (110).   10) Device according to claim 8 or 9, characterized in that said openings (124) are slots opening at the periphery of the flange (110).   11) Device according to claim 8, 9 or 10, characterized in that the size of the slots (124) is adapted to allow the maintenance by clamping a 1 5 flange (200, 200 ').   12) Device according to one of the preceding claims, characterized in that the flange (200, 200 ') is secured to the flange (110).   13) Device according to claim 12, characterized in that the flange (200, 200 ') is secured by gluing on the flange (110).   14) Device according to claim 12, characterized in that the flange (200, 200 ') is secured by overmolding on the flange (110).   15) Device according to claim 12, characterized in that the flange (200, 200 ') is constitutive of the flange (10).   16) Device according to one of claims 1 to 11, characterized in that the flange (200, 200 ') is a separate component from the flange (110).   17) Device according to one of claims 16, characterized in that the perpendicular parts (214a, 214b) are respectively extended by two legs (216a, 216b) extending parallel to the central body (212), the legs (216a, 216b) being adapted to bear against the rear surface of the flange (110), the perpendicular parts (214a, 214b) passing through openings (124) of the flange (110).   18) Device according to any one of the preceding claims, characterized in that said tubular body (100, 100 ') of said connection device is fixed in a non-removable manner in said sheath.   19) Device according to claim 18, characterized in that said tubular body (100, 100 ') of said connection device is fixed by gluing.   20) Device according to claim 18, characterized in that said tubular body (100, 100 ') of said connection device is fixed by means of clamps.   21) Device according to any one of the preceding claims, characterized in that the wall (P) of said terminal includes an orifice (O) for connecting said terminal and against which a collar (110) of a sheath to be connected can be positioned at said terminal, two sets of openings (124 ', 10 125'; 122 ') being formed in said wall (P) diametrically opposite on either side of said orifice, a first set of openings (124' , 125 ') allowing the installation of a flange (200, 200'), the central body of which bears against the rear surface of the wall (P) and the end branches of which pass through said wall (P), and a second set of openings (122 ') comprising a hole in which is embedded a nut (320) capable of receiving a screw (310) passing through a hole in said flange so that the head of the screw bears against the rear surface of said collar.