• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The reservoir comprises: a hollow body; a valve device (12) received within the hollow body; and a support member (22) adapted to support the valve device (12) and to be attached to an upper wall (10) of the hollow body. The support element (22) is provided with coupling teeth (30, 32) adapted to engage corresponding undercut seats (18, 20) provided in raised portions (14, 16) of the upper wall (10). The coupling teeth (30, 32) comprise a first rigid coupling tooth (30) able to engage in a first seat (14) and second elastically deformable coupling teeth (32) able to engage by snapping into corresponding second seats (16), in such a way that the first coupling tooth (30), once engaged in the first seat (14), acts as a pivot about which the assembly formed by the the support member (22) and the valve device (12) are rotatable and, while rotating, can be urged against the upper wall (10), causing each second coupling tooth (32) to rotate snap into the corresponding second seat (16).
    公开号:FR3022498A1
    申请号:FR1555555
    申请日:2015-06-17
    公开日:2015-12-25
    发明作者:Enrico Parola；Pasquale Iacobone；Etienne Valentin
    申请人:Plastic Components and Modules Automotive SpA；
    IPC主号:
    专利说明:

    [0001] The present invention relates generally to a fuel tank for a motor vehicle with a valve device that can be mounted inside said tank, and more particularly a mounting system for mounting the valve device within the tank. Current automotive industry standards require that the fuel tank of a motor vehicle meet a number of requirements, including being impermeable, or permeable to a certain maximum allowable level, to gasoline vapors. . In order to meet this requirement, various reservoir manufacturing processes have been developed which consist in the extrusion blow-molding of a multilayer material comprising an intermediate layer of EVOH (ethylene vinyl alcohol) which serves as a barrier layer and a pair of outer layers of HDPE (high density polyethylene). It is necessary not only to limit permeation through the walls of the tank, but also to limit the permeation due to mounting on the tank of valve devices, such as blocking or purging valves, which are necessary for the proper service. operation of the fuel system. To do this, two different methods are currently used. The first is based on placing and securing the valve devices within the reservoir by engaging the valve devices, or rather supporting members supporting these devices, with protruding portions projecting therefrom. down from the top wall of the tank. This method is frequently used for the manufacture of tanks for the US market, where current standards set maximum permeability limits that are significantly lower than those indicated, for example, by European standards. A second method is to fix the valve devices within the reservoir by means of holes in the upper wall of the reservoir and to cover the pierced areas with "pellets" of a multilayer material comprising an EVOH layer. . As previously indicated, the present invention relates to mounting a valve device within the reservoir. A motor vehicle fuel tank with a valve device that can be mounted inside said tank is known from, for example, EP 0 875 411. According to this known solution, the inner part of the tank is provided with a a pair of sliding guides, which are formed by the tank wall and are oriented parallel to each other, to fix a valve device inside the tank, and to do this the valve device is provided with a pair of elastically deformable tabs, each of them being adapted to cooperate with a corresponding sliding guide. Engagement of the resiliently deformable tabs of the valve device with the slide guides of the reservoir prevents relative movement of the valve device relative to the reservoir except for sliding along the guides. A disadvantage of this known solution is the free space required for mounting the valve device, this free space having to be at least equal to the overall dimensions of the valve device in the sliding direction, in order to allow the elastically deformable tabs of the valve device. align with the sliding guides and thereby allow the resiliently deformable tabs to be pushed into the slide device with the complete valve device along the sliding guides. Another example of a vehicle fuel tank with a valve device which can be mounted inside the latter is known from EP 1 5 1 147 934. According to this other known example, the tank comprises a hollow body which forms a raised portion projecting towards the inner part of the hollow body and a valve device which is connected to the hollow body by means of an intermediate element comprising an elastically deformable part able to engage, because of its elastic deformation, with the relief portion so as to fix the intermediate member, together with the valve device, to the hollow body. The valve device and the intermediate element are designed in such a way that when the valve device is mounted on the hollow body by means of the intermediate element, the elastically deformable part of the intermediate element can not to separate from the raised part. According to this known solution, the mounting of the valve device inside the reservoir requires that the elastically deformable portion be elastically deformed to enable it to engage with the raised portion, and this requires the use of a special tool . This is why the operation of mounting the valve device inside the tank is not particularly easy. Another disadvantage of this known solution is that it is impossible to remove the valve device once it has been mounted inside the tank. It is therefore an object of the present invention to provide a motor vehicle fuel tank with a valve device mountable therein which does not experience the aforementioned disadvantages of the prior art. More specifically, it is an object of the present invention to provide a motor vehicle fuel tank which allows for easy mounting of the valve device within the tank. Another object of the present invention is to provide a fuel tank for a motor vehicle that allows the valve device to be removed from the tank, if necessary.
    [0002] The aforementioned objects, and others, are fully realized according to the invention by means of a fuel tank for a motor vehicle comprising: a hollow body having an upper wall from which raised portions having undercut seats protrude; a valve device received within the hollow body; and a support member adapted to support the valve device and to be attached to the upper wall of the hollow body, said support member being provided with coupling teeth adapted to engage said undercut seats, wherein the coupling teeth comprise at least a first rigid coupling tooth adapted to engage in at least one first seat of said undercut seats and at least one second elastically deformable coupling tooth capable of engaging by snapping into at least one second seat of said undercut seats in such a manner that said at least one first coupling tooth, once engaged in said at least one seat, acts as a pivot around which the assembly 3022498 4 formed by the support member and the valve device is rotatable and, as it rotates, can be urged against said upper wall, causing said at least one second coupling tooth to engage by snapping into said at least a second seat. As will be clear from the description below, the manner of securing the valve device within the reservoir that is provided by the present invention overcomes the above-mentioned disadvantages of the prior art, since requires no clearance around the raised portions to permit mounting of the valve device, and allows the valve device to be easily mounted within the tank body without the need for a special tool. In addition, thanks to the adapted shape of the at least one second coupling tooth and the at least one second undercut seat, it is possible to remove the valve device from the reservoir, while ensuring a fixation stable and solid under all tank operating conditions. Preferably, the hollow body is made of plastic. According to one embodiment of the invention, the raised portions are integrally formed by the top wall. In addition, the support member is preferably of plastics material and the at least first and at least one second coupling teeth are preferably integrally formed by the support member.
    [0003] According to one embodiment of the invention, the support element is made of plastic, while the at least one first and at least one second coupling tooth are made of metal.
    [0004] Preferably, the reservoir comprises a blocking member adapted to lock the valve device against the support member.
    [0005] Preferably, the support member is removably attached to the top wall of the hollow body. According to one embodiment of the invention, the locking element is designed to allow elastic deformation of said at least one second coupling tooth to an extent sufficient to enable the latter to disengage from the at least one a second seat. Preferably, the valve device comprises first and second valves 10 and the first and second valves are each supported directly by the support member. Alternatively, the first valve is supported directly by the support member, the second valve being supported directly by an auxiliary support member attached to the support member or the first valve.
    [0006] Other features and advantages of the present invention will emerge more clearly from a reading of the following description, which is provided purely by way of non-limiting example with reference to the accompanying drawings, in which: FIG. exploded showing the mounting of a valve device formed of a single valve within a motor vehicle fuel tank according to an embodiment of the present invention; Figure 2 is a perspective view of the assembly formed by the valve, the support member and the locking member of Figure 1; Figures 3 and 4 are perspective views showing the valve of Figure 1 in the intermediate position and in the final mounting position within the reservoir, respectively; Figure 5 is a sectional view of the upper wall portion of the reservoir of Figure 1, with the valve in the final mounting position, taken along a sectional plane passing through the rigid coupling tooth of the element. support; Fig. 6 is a sectional view of the upper wall portion of the reservoir 30 of Fig. 1, with the valve in the final mounting position, taken along a sectional plane passing through one of the two elastically coupling teeth. deformable of the support member; FIG. 7 is a view similar to that of FIG. 6, in which one of the two elastically deformable coupling teeth of the support element is shown both in the undeformed state and in a state in which it is deformed so as to be able to disengage from the corresponding undercut seat; Fig. 8 is a perspective view showing another alternative for mounting a valve device formed of a single valve within a motor vehicle fuel tank according to the present invention; Figure 9 is a perspective view showing the mounting of a valve device formed of a pair of valves within a motor vehicle fuel tank according to the present invention; Figures 10 and 11 are perspective views showing an alternative embodiment of the mounting arrangement of Figure 9; Fig. 12 is a perspective view showing another alternative for mounting a valve device formed of a pair of valves within a motor vehicle fuel tank according to the present invention; and FIG. 13 is a perspective view of the assembly formed by the two support members of the embodiment of FIG. 12. Begin by referring to FIGS. 1 to 7, where a motor vehicle fuel tank according to FIG. The invention comprises, in a manner known per se, a hollow body (hereinafter more simply referred to as a "body") of which only part of the upper wall, designated by the reference numeral 10, is illustrated. The reservoir body is advantageously made of a plastic material by an extrusion blow molding process or by an injection molding or thermoforming process. Inside the tank is mounted a valve device 12 which, in the embodiment of FIGS. 1 to 7, is formed of a single valve, for example a valve called a safety valve in the event of overturning (in English). , ROV: Roll Over Valve) or a valve called a fuel limit valve (FLVV). More specifically, the valve device 12 is attached to the upper wall 10 of the tank body, which for this purpose forms a plurality of raised portions 14 and 16, namely a raised portion 14 having an undercut seat. 18 and a pair of raised portions 16, each having an undercut seat 20. In the embodiment illustrated in FIGS. 1 to 7, the raised parts 14 and 16, with the undercut seats corresponding 18 and 20 are inclined spaced along a circumference centered on the vertical axis of the valve.
    [0007] To allow the valve device 12 to be attached to the top wall 10, the reservoir is provided with a support member 22 adapted to support the valve device 12 and to be attached, preferably removably, to the upper wall 10 by engagement with the raised portions 14 and 16 formed by this wall. The support element 22 is advantageously made in one piece in a plastic material.
    [0008] The support function of the valve device 10 is obtained, for example, by virtue of the fact that the valve device 12 is inserted and locked in a tubular housing portion 24 formed by the support element 22 and comprises a flange. 26 which rests on an annular support wall 28, coaxial with the housing portion 24, which is also formed by the support member 22, as can be seen in Figures 5 and 6. To allow its attachment, and by Consequently, the fixing of the valve device 12 that it supports, to the upper wall 10, the support element 22 is provided with a rigid coupling tooth 30 able to engage in the undercut seat 18 ( Figure 5) and a pair of resiliently deformable coupling teeth 32, each adapted to snap into a corresponding undercut seat 20 (Figure 6). The coupling teeth 30 and 32 may be either of plastic material, in which case they are formed integrally with the support member 22, or of metal, in which case they are molded together with the plastic material of the support member 22 or are attached to the support member 22 by other methods of attachment of a type known per se. In the embodiment proposed herein, the rigid coupling tooth 30 comprises a central portion 34 having a substantially inverted L-shaped section, and a pair of reinforcing side portions 36 attached to opposite sides of the central portion 34.
    [0009] It is obvious, however, that this coupling tooth may have a shape different from that proposed here, provided that this form makes the coupling tooth sufficiently rigid to prevent the deformation of the coupling tooth under them. 3022498 8 normally expected during assembly of the valve device inside the tank and during normal use of the tank. Each of the two resiliently deformable coupling teeth 32 comprises, in the embodiment provided herein, a substantially vertically extending support portion 38 and a tab 40 connected to the upper end of the support portion 38 and extending outwardly and downwardly therefrom at a given angle (preferably less than 45 °) with the support portion 38.
    [0010] The attachment of the support member 22, together with the valve device 12, to the upper wall 10 of the reservoir body is substantially in the following two steps, illustrated in Figures 3 and 4, respectively. Begin (FIG. 3) by engaging the rigid coupling tooth 30 with the corresponding undercut seat 18. The assembly formed by the support member 22 and the valve device 12 is then urged against the upper wall 10 of the tank body, rotating it along an axis of rotation defined by the line of contact between the rigid coupling tooth 30 and the corresponding undercut seat 18, until the coupling teeth resiliently deformable 32 snap engage in corresponding undercut seats 20 (as shown in Figure 4). As can be clearly seen, the operator can easily perform this operation by hand without the use of a special tool. In the embodiment illustrated in FIGS. 1 to 7, there is also provided a locking member 42 which rests on the top of the flange 26 of the valve device 12 to lock the valve device 12 on the element 22. The locking element 42 may also be omitted, as shown in the embodiment of FIG. 8. If present, however, the locking element 42 is designed to allow, in the case of state in which the assembly formed by the support member 22 and the valve device 12 is mounted on the upper wall 10 (as shown in FIG. 7), a deformation of the elastically deformable coupling teeth 32 in sufficient for these teeth to separate from the corresponding undercuts seats 20, and for the support member 22, together with the valve device 12, to be detached from the top wall 10. As shown in FIG. my FIGS. 9 to 13, in which the parts and elements which are identical or corresponding to those of FIGS. 1 to 8 are designated by the same numerical references, the invention makes it possible to mount inside the reservoir a valve device 12 consisting of two valves, for example a ROV valve and an FLVV valve, which are indicated on the drawings by the numerical marks 12A and 12B. In this case, the following two solutions can be applied: the use of a single support member designed to support the two valves (FIGS. 9 to 11) or the use of an auxiliary support member which is designed to supporting the second valve and being attached to the main support member supporting the first valve, or directly to the first valve itself, and which is adapted to be attached to the upper wall of the tank (Figures 12 and 13).
    [0011] According to the solution illustrated in FIGS. 9 to 11, the support member 22 forms a pair of tubular housing portions 24A and 24B, in which the first valve 12A and the second valve 12B, respectively, are inserted and locked. The manner in which the support member 22 is attached to the upper wall 10 of the tank body is similar to that described above with reference to FIGS. 1-7. In this case also, in fact, the support 22 is provided with a rigid coupling tooth 30 adapted to engage in a first undercut seat 18 provided in a first raised portion 14 formed by the upper wall 10 of the reservoir, and a pair of elastically deformable coupling teeth 32, adapted to engage by snapping into undercut seats 20 provided in the raised portions 16 formed by the upper wall 10 of the tank. The undercut seats 20 may be provided both in the raised parts 16 separated from each other (as in the claiming mode illustrated in FIG. 9) or in the same raised part 16 (as in FIG. the claim mode illustrated in Figures 10 and 11).
    [0012] Finally, according to the solution illustrated in Figs. 12 and 13, there is provided a first support member 22A (main support member) which supports the first valve 12A and is provided with coupling teeth 30 and 32. allowing it to be attached to the top wall 10 of the tank in a manner similar to that described above with respect to, for example, the embodiment of Figs. 1 to 7, and a second support member 22B (support member auxiliary), which supports the second valve 12B and is adapted to be attached to the main support member 22A or directly to the first valve 12A.
    [0013] Naturally, the principle of the invention remaining unchanged, it is possible to vary to a large extent the embodiments and construction details with respect to those described and illustrated purely by way of non-limiting example, without however depart from the scope of the invention as defined in the appended claims.
    [0014] For example, although, in the embodiments described and illustrated herein, the rigid coupling tooth of the support member (or main support member, when two support members, a principal and an auxiliary , are provided) and the corresponding undercut seat are shaped to form a cylindrical hinge once the tooth is engaged in the seat, the rigid coupling tooth and the corresponding undercut seat can also be shaped to form a spherical hinge when the tooth is engaged in the seat. Further, although in the embodiments described and illustrated herein the support member (or the main support member when two support members, a main and an auxiliary, are provided) is provided with a only rigid coupling tooth, two or more rigid coupling teeth could also be provided, in which case they would be aligned, as would be the corresponding undercut seats, so as to form a cylindrical hinge. If a plurality of rigid coupling teeth are present, then it is also effective to provide in the upper wall of the reservoir either a plurality of undercut seats, one for each rigid coupling tooth, or a single seat against undercut capable of engaging with all rigid coupling teeth of the support member.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. A fuel tank for a motor vehicle, comprising a hollow body having an upper wall (10) from which raised parts (14, 16) having undercut seats (18, 20) project, a valve device (12) received within the hollow body, and a support member (22) adapted to support the valve device (12) and to be attached to the top wall (10) of the hollow body, said support member ( 22) being provided with coupling teeth (30, 32) engageable in said undercut seats (18, 20), characterized in that the coupling teeth (30, 32) comprise at least one first rigid coupling tooth (30) adapted to engage in at least one first seat (14) of said undercut seats (14, 16) and at least one second elastically deformable coupling tooth (32) adapted to engage by snapping into at least one second seat (16) of said undercut seats (14, 16), such that said at least one first coupling tooth (30), once engaged in said at least one first seat (14), acts as a pivot about which the assembly formed by the support member (22) and the valve device (12) are rotatable and, while rotating, can be pushed against said upper wall (10), causing said at least one second coupling tooth (32) ) to engage by snapping into said at least one second seat (16).
    [0002]
    The tank of claim 1, wherein said hollow body is made of plastic.
    [0003]
    A tank according to claim 1 or claim 2, wherein said raised portions (14, 16) are formed integrally by said top wall (10). 30
    [0004]
    A tank according to any one of the preceding claims, wherein the support member (22) is of plastics material and wherein said at least one first and at least one second coupling teeth (30, 32) are formed. of a single 3022498 12 holding by the support member (22).
    [0005]
    A tank according to any one of claims 1 to 3, wherein the support member (22), except for said at least one first and at least one second coupling teeth (30, 32), is plastic material, while said at least one first and at least one second coupling teeth (30, 32) are made of metal.
    [0006]
    The reservoir of any preceding claim, further comprising a blocking member (42) adapted to lock the valve device (12) against the support member (22).
    [0007]
    A tank according to any one of the preceding claims, wherein the support member (22) is removably attached to the top wall (10) of the hollow body. 15
    [0008]
    A tank according to claims 6 and 7, wherein the locking member (42) is adapted to allow elastic deformation of said at least one second coupling tooth (32) to a degree sufficient to allow the latter to separate from said at least one second seat (16). 20
    [0009]
    A tank according to any one of the preceding claims, wherein said valve device (12) comprises first and second valves (12A, 12B) and wherein said first and second valves (12A, 12B) are each directly supported by the support member (22).
    [0010]
    A tank according to any of claims 1 to 8, wherein said valve device (12) comprises first and second valves (12A, 12B), said first valve (12A) being directly supported by said support member ( 22A) and said second valve (12B) being directly supported by an auxiliary support member (22B) attached to said support member (22A) or said first valve (12A).
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20150367725A1|2015-12-24|
    FR3022498B1|2018-12-07|
    BR102015014748A2|2016-06-28|
    DE102015210412A1|2015-12-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3592495A|1969-07-23|1971-07-13|Illinois Tool Works|Latching device|
    JP3777214B2|1996-01-08|2006-05-24|株式会社ニフコ|Fuel spill prevention valve device|
    US5931353A|1997-04-28|1999-08-03|Solvay |Plastic hollow body with internal fastening arrangement|
    JP3914320B2|1998-01-26|2007-05-16|株式会社ミクニ|Fuel shut-off device and connecting structure of the fuel shut-off device|
    JP3623894B2|1999-04-13|2005-02-23|ペンタックス株式会社|In-vivo endoscope|
    FR2807976B1|2000-04-20|2002-06-28|Plastic Omnium Cie|MOTOR VEHICLE FUEL TANK|DE102015221377A1|2015-11-02|2017-05-04|Ti Automotive Technology Center Gmbh|Plastic container with cup-like body|
    DE102016215572A1|2016-08-19|2018-02-22|Volkswagen Aktiengesellschaft|Fuel tank for a motor vehicle|
    CN110843507A|2018-08-20|2020-02-28|上海汽车集团股份有限公司|Vehicle and high-pressure fuel tank thereof|
    法律状态:
    2016-05-24| PLFP| Fee payment|Year of fee payment: 2 |
    2017-05-23| PLFP| Fee payment|Year of fee payment: 3 |
    2018-05-04| PLSC| Publication of the preliminary search report|Effective date: 20180504 |
    2018-05-25| PLFP| Fee payment|Year of fee payment: 4 |
    2020-06-30| PLFP| Fee payment|Year of fee payment: 6 |
    2021-06-30| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    ITTO20140498|2014-06-20|
    ITTO2014A000498|2014-06-20|
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