• 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 tire inflation valve (200) having a tubing (204) defining a passage (7, 70, 71) and having an inner end (246) and an outer end (243), a valve mechanism (244) positioned in the passage, the valve mechanism comprising a valve (443) and a seat (412) arranged to cooperate sealingly with each other characterized in that the seat is arranged on the tubing in the passage.
    公开号:FR3066438A1
    申请号:FR1756476
    申请日:2017-07-07
    公开日:2018-11-23
    发明作者:Jerome Puppis
    申请人:Schrader SA；
    IPC主号:
    专利说明:

    IMPROVED TIRE VALVE
    The invention relates to an inflation valve for a tire, of the type intended for inflating a tire of the tubeless type (English terminology for “without inner tube”). This inflation valve is said to be “tubeless” or even “TPMS” (for “Tire Pressure Monitoring System” according to English terminology) if it includes a tire pressure monitoring system with a sensor associated with said valve. It is of the “snap-in” type if it is buttoned or snapped onto the rim or of the “clampin” type if it is screwed onto the rim.
    Currently, the inflation valves for tires are at least in two parts which are the valve body and the valve mechanism. The valve mechanism includes the valve and its associated seat, allowing control and adjustment of the pressure within the tire. It is mounted attached, generally screwed, at the outer end of the valve body, the outer end which is accessible outside the tire. Such arrangements are described in document EP 0 958 947 for example. A drawback of such an assembled assembly comes from the fact that the external dimensions of the external end of the valve body are constrained by a standard and that the screwed valve mechanism requires the presence of a thread within said external end: consequently, the thickness of material of the valve body is reduced and therefore the mechanical resistance of the valve body, at least at its external end where the attached valve mechanism is located. This introduces the risk of valve failure. Indeed, a breakage of the external end of the valve body no longer guarantees a tightness of the pressure volume that is the tire according to two modes of failure:
    - An immediate loss of tightness, the tire deflates and the vehicle is immobilized;
    - The valve mechanism remains in place, despite the breakage of the external end of the valve body, but its maintenance is strongly compromised. The tire can operate normally but the loss of tightness and more or less rapid emptying can occur randomly at the slightest stress on the valve mechanism (for example driving vibrations) and therefore endanger the user (s) of the tire. vehicle.
    An object of the invention is to provide an inflation valve for tires which does not have the above drawbacks.
    To this end, there is provided, according to the invention, an inflation valve for a tire comprising a tube defining a passage and having an internal end and an external end, a valve mechanism positioned in the passage, the valve mechanism comprising a valve and a seat arranged so as to cooperate in a sealed manner with each other, characterized in that the seat is arranged on the tube in the passage.
    Thus, by providing the seat of the valve mechanism on the valve body, it is no longer necessary to have an attached mechanism body, since thereby the valve body plays the role of mechanism body. This allows for optimal mechanical strength ensuring optimal sealing.
    Advantageously, but optionally, the inflation valve according to the invention has at least one of the following additional characteristics:
    - the seat is located in a zone of limited stress on the tubing;
    - the seat is located in the vicinity of a rim hole in the tire, during assembly of the inflation valve;
    - The seat is located at the internal end of the tubing, so as to be positioned inside the tire during assembly of the inflation valve;
    - The valve mechanism includes valve control means located at the outer end of the tubing;
    - The valve mechanism comprises a valve stem comprising a head forming the valve comprising a seal arranged so as to cooperate sealingly with the seat of the tube;
    - The valve mechanism comprises a valve stem comprising a head forming the valve arranged so as to cooperate in leaktight manner with a seal fitted on the seat of the pipe;
    - The valve mechanism includes return means in the closed position located at the outer end of the tubing;
    - The return means comprise a spring;
    - The spring comprises, at one end, a first turn 4131 bearing on a support rim of the tube in the passage and, at an opposite end, a turn in connection with a valve and an enlarged turn for guiding and stabilizing; and
    - The valve stem has a bulge cooperating with the turn.
    Other characteristics and advantages of the invention will become apparent from the description below of an embodiment of the invention. In the accompanying drawings:
    - Figure 1 is a three-dimensional view of an inflation valve according to the invention;
    - Figure 2 is a side view of the inflation valve of Figure 1;
    - Figure 3 is a sectional view along III-III of the inflation valve of Figure 2;
    - Figure 4 is a sectional view of an inflation valve without housing;
    - Figure 5 is a three-dimensional view of the inflation valve of Figure 4;
    - Figure 6 is a sectional view of a second embodiment of an inflation valve without housing; and,
    - Figure 7 the recall assembly. Eastthe astem three-dimensional view of clamshell and of the means of In opening remarks, he should, in the text, understand through "Internal" (INT) and "External" (EXT) as doing
    reference to a positioning inside the tire and outside the tire respectively, relative to the rim as shown in Figures 2, 4 and 6.
    With reference to Figures 1 to 3, we will describe a mode
    of realization of a valve 1 inflation for tire according to 1 ' invention. The valve 1 of inflation for tire according to 1 ' invention East, here, a type valve TPMS and of type " snap-in ”. The valve 1 of inflation for tire according to
    the invention comprises a tube 4 which defines a passage
    7, 70, 71 of cylindrical shape of revolution of axis X and extending from an internal end 46 and an external end 43. The tubing comprises, successively from the external end 43 towards the internal end 46:
    - Cooperation means for the establishment and maintenance of a cap 2 for protecting the outer end 43; then,
    - A frustoconical portion 42 in the shape of a fir tree ending in an external shoulder 421; then,
    a portion 45 comprising an annular housing 452 delimited longitudinally by the external shoulder
    421 and an internal shoulder 411, an annular groove 451; then,
    an internal portion 41 comprising the internal end 46.
    In parallel, the passage 7,70,71 defined by the tubing comprises, successively from the external end 43 towards the internal end 46:
    - an external part 70; then
    - A central part 71 having a diameter less than a diameter of the external part 70 and connected to the latter by a support flange 701; then
    - An internal part 7 of larger diameter than the central part 71 and connected to the latter by a frustoconical seat 412.
    The tire inflation valve 1 according to the invention further comprises a valve mechanism 44 positioned in the passage
    7,70,71. The valve mechanism 44 includes a valve stem
    442. The valve stem 442 includes a valve head
    443 on which a sealing gasket 441 is arranged.
    Once the valve mechanism in place in the tubing, the seal 441 comes to bear on the seat 412 of the passage 7,70,71, the valve mechanism 44 then being in a closed position preventing at least leaks from gas from the inner end. This closed position of the valve mechanism 44 is ensured by return means 413 comprising a spring, here. The seal 441 is made of a thermosetting, vulcanizable or injectable polymer, or even of a metal, without this being exhaustive. In an alternative embodiment, the seal 441 is integrally formed with the valve head 443. According to another alternative embodiment, the seal is arranged on the seat 412. Once mounted in the passage 7.70 , 71, the valve mechanism 44 has the head 443 of the valve stem 44 positioned in the internal part 7 of the passage 7,70,71, a tail 444 of the valve stem 44 passing through the central part 71 for s extend into the external part 70 in which the return means 413 are located. In addition, the tail 444 of the valve stem 44 has a bulge 2441 located in the external part 70, at a distance from a free end of the tail. 444. The tail 444 of the valve stem 44 and the return means 413 form means for controlling the valve. More specifically, the spring forming the return means 413 has a generally cylindrical-conical shape. It comprises a first turn 4131 forming a large base and having a diameter substantially identical to the diameter of the external part 70. This first turn 4131 is in abutment on the flange 701 connecting the external part 70 of the passage 7,70,71 to the central part 71 of the latter. The spring further includes a coil 4133 forming the small base. The coil 4133 comes to bear on the bulge 2441 of the tail 444 of the valve rod 44. When the spring is mounted on the valve rod 44, the bulge 2441 is force-fitted through the coil 4133. The coil 4133 is extended concentrically by an enlarged turn 4132 whose diameter is substantially identical to the diameter of the external part 70. This enlarged turn 4132 is a centering and radial stabilization turn in the external part 70 of the valve stem 44.
    The valve mechanism 44 is more fully described in document WO 2016/174323 to which it is possible to refer for more information.
    The tire inflation valve 1 according to the invention further comprises an elastic element 3 received in the annular housing 452. This elastic element 3 thus surrounds the portion 45 of the tubing 71 and therefore the central part 71 of the passage. From the external end towards the internal end, the elastic element 3 comprises a frustoconical part 33, one external end of which bears on the external shoulder 421. The frustoconical part 33 comes in the extension of the frustoconical portion 42 of the tubing 4. Then the elastic element 3 has an annular sealing surface 31 terminating towards the internal end by a shoulder 321. The annular sealing surface 31 is arranged so as to cooperate with a valve opening 11 arranged in a thickness of a wheel rim plate 10, as illustrated in FIG. 2. Once the elastic element 3 is in place in the annular housing 452, the annular sealing surface 31 is in line with the annular groove 451 of the annular housing 452.
    Cleverly, the annular groove 452 has a width greater than a width of the annular sealing surface 31. This arrangement allows the material of the elastic element 3 located radially under the annular sealing surface 31 to be able to migrate into the annular groove 451 once the tire inflation valve 1 according to the invention positioned in the valve opening 11. In fact to ensure optimum sealing, the annular sealing surface 31 has a diameter greater than a diameter of 1 valve opening 11, the deformation of this part of the elastic element 3 thus made possible ensures optimum sealing at said valve opening 11. Then, still towards the internal end, after the shoulder 321 , the elastic element 3 comprises an end part 32 which surrounds the internal shoulder 411 of the annular housing 452 as well as a part of the portion i nterne 41 of the tubing 4. When the elastic element 3 is mounted on the tubing 4, an internal diameter of the elastic element 3 before mounting is less than a diameter of the tubing in its portion 45. Thus, the elastic element 3 tightens the tubing 4 to ensure mechanical adhesion allowing:
    - when mounting the tire inflation valve 1 according to the invention, to keep the elastic element 3 in tension, which, when elongated, will see its external diameter at an internal end of the frustoconical part 33, then from the annular sealing surface 31, reduce to pass into the valve orifice 11 of the rim 10;
    - to provide part of the seal;
    - Make efficient mechanical retention of the tire inflation valve according to the invention.
    It should be noted that the structure allowing the sealing part of the valve mechanism 44 to be offset at the level here of the internal end 46 leads to:
    • have a thickness of material compatible with the compression required for mounting in the valve opening 11 of the rim 10 while having a thickness of tubing wall at the level of the central part 71 of the passage compatible with the resistance of the injected materials and a sufficient gas passage section.
    • Avoid rapid degassing with the risk of an accident during a breakage at the level of the external end of the tire inflation valve 1 according to the invention, the sealing part of the valve mechanism 44 then being inside. (INT) of the tire.
    The tire inflation valve 1 according to the invention further comprises a wireless communication unit 5. This wireless communication unit 5 comprises a housing 52 having a lateral opening 51. The wireless communication unit 5 also comprises , in a manner known per se, an electronic device 9, in the form of an electronic card for example, equipped in particular with a pressure sensor and with an electronic (printed circuit (PCB according to the acronym English) for "Printed Circuit Board ") and integrated circuit (ASIC according to the acronym for" ApplicationSpecific Integrated Circuit ")) allowing measurement and sending of information to the on-board computer of the motor vehicle, as well as a source of power supply. The electronic device 9 is introduced, in a removable manner in an alternative embodiment, inside the housing 52 by the opening 51. The latter is then closed. The possibility of having a removable electronic device 9 within the housing is to allow the said electronic device 9 to be reused in a new tire inflation valve 1 according to the invention in the case of a valve change for example Here, the housing 52 is located on the internal end 46 of the tubing 4 of the tire inflation valve 1 according to the invention. The housing 52 came integrally with the tubing 4. Thus the tubing 4 and the housing 52 form a one-piece assembly in continuity of material. This monobloc assembly is obtained simply by molding either in metallic material (brass for example), composite or more generally plastic. This therefore makes it possible to reduce the number of parts of the tire inflation valve 1 according to the invention, as well as its mass. This reduction in mass of the tire inflation valve 1 according to the invention makes it possible to reduce, in use, the centrifugal forces and the induced stresses which cut the elastic element 3, generally made of elastomer, with the edges of the orifice. valve 11 of the rim 10, as well as the needs for balancing weights of the wheel thus equipped with such an inflation valve 1 for tires according to the invention.
    The tire inflation valve 1 according to the invention comprises a junction element 53 between the housing 52 and the tubing 4. This junction element 53 comes in the extension of the internal end 46 of the tubing 4 and extends in protruding from a side wall of the housing 52. The junction element comprises reinforcing ribs 54, 55 connecting the junction element 53 to the pipe 4 and the housing 52 respectively. A series of reinforcing ribs 54 extend substantially parallel to the longitudinal axis X and in particular connect the junction element 53 to the tube 4 at its internal portion 41. They are three in number here and are distributed on a portion of an outer periphery of the inner end 46. On the other hand, a second reinforcing rib 55 extends substantially perpendicular to the longitudinal axis X of the pipe 4, connecting the junction element 53 to the housing 52. These reinforcing ribs 54, 55 participate in the holding over time of the housing 52 on the tube 4.
    In FIGS. 4 and 5, we have illustrated an inflation valve 100 for tires of the “tubeless” type and of the “snapin” type. This “tubeless” inflation valve 100 differs from the tire inflation valve 1 according to the invention previously described in that the “tubeless” inflation valve 100 does not include a wireless communication unit or any element. junction between the housing of the wireless communication unit and the tubing 4. The other elements of the inflation valve 100 “tubeless” inflation are similar to those equivalent to the tire inflation valve 1 according to the preceding invention. We will not rewrite them any further. In particular, the valve mechanism 44 is identical, which makes it possible to offset the sealing part of the valve mechanism 44 at the level of the internal end 46 of the tubing 4. Thus the sealing part of the valve mechanism 44 is then inside. (INT) of the tire, once the “tubeless” inflation valve 100 is placed through the rim 10. Again, among other things, this makes it possible to avoid rapid degassing with the risk of an accident during a breakage at the outer end of the “tubeless” inflation valve 100.
    According to variant embodiments, the valves 1 and 100 previously described are of the “clamp-in” type instead of the “snap-in” type.
    In FIGS. 6 and 7, we have illustrated an alternative embodiment 200 of the inflation valve for a “clamp-in” type tire. The “clamp-in” inflation valve 200 comprises a tube 204 in which the passage is arranged.
    7.70.71. A valve mechanism 244 is positioned in the passage 7,70,71. This valve mechanism 244 is very similar to the valve mechanism 44 previously described. The valve mechanism 244 includes a valve stem 2442. The valve stem 2442 includes a valve head 443 on which a packing 441 is arranged. Once the valve mechanism 244 is in place in the tubing, the packing the seal 441 comes to bear on the seat 412 of the passage 7,70,71, the valve mechanism 244 then being in a closed position preventing at least gas leaks from the internal end. This closed position of the valve mechanism 244 is ensured by the return means 413 previously described. Once mounted in the passage
    7.70.71, the valve mechanism 244 has the head 443 of the valve stem 244 positioned in the internal part 7 of the passage 7,70,71, a tail 2444 of the valve stem 244 passing through the central part 71 for extend into the external part 70 in which the return means 413 are located. In addition, the tail 2444 of the valve stem 244 has a bulge 2441 situated in the external part 70, at a distance from a free end of the tail 2444. The tail 2444 of the valve stem 244 and the return means 413 form control means of the valve.
    On the other hand, the “clamp-in” inflation valve 200 comprises a sealing means 206 retained in a housing 207 situated at the internal end 246. On mounting, the housing 207 is located inside the tire, the sealing means 206 coming to seal between a periphery of the orifice 11 of the rim 10 and the tube 204. In addition, a clamping nut 205, mounted from the outside, makes it possible to hold the valve in place 200 of clamp-in inflation on the rim 10.
    It should be noted that the structure making it possible to offset the sealing part of the valve mechanism 244 makes it possible to avoid rapid degassing with the risk of an accident during a breakage at the level of the external end of the inflation valve 200 for tire according to the invention, the sealing part of the valve mechanism 244 then being in a zone with limited mechanical stress 242, 246 of the tubing 204, outside a break zone situated at the level of the external end 243 of the valve 200 This break zone corresponds to the part of the tubing 204 located at the external end 243 of the tire inflation valve 200 according to the invention on which the cap 2 is put in place and where an end piece is connected. 'an inflator. The part of the tubing of the tire inflation valve 200 according to the invention located between the internal end 246 and the breakage zone is the zone with limited mechanical stress. In particular, according to an alternative embodiment, the sealing part is positioned in the vicinity of the orifice 11 for mounting the valve 200 in the rim 10. It is understood here by "in the vicinity of the orifice it" that the sealing part is located between the breakage zone of the external end 243 of the valve 200 and a position to the right of the orifice there but being closer to said position to the right of the orifice it than to the breakage zone of the outer end 243 of valve 200.
    According to an alternative embodiment, the tire pouch inflation valve 200 according to the invention which has just been described is of the “snap-in” type.
    It should be noted that the valve mechanism 244 can be used in the valves 100 and 1 previously described. In addition, the breakage zones and with limited mechanical stress are defined in a similar manner for the valves 1 and 100 according to the invention, likewise, the valve mechanism 44 can be used in the preceding valve 200.
    It should be noted that such a tire inflation valve structure 1,100,200 according to the invention makes it possible to produce a tube 4, 204 which has an external part 70 whose diameter is smaller than the diameter necessary to carry out the receiving tapping. a valve mechanism of the prior art, since the thread depth of said unnecessary tapping is recovered to obtain a significantly greater material thickness at the level of the external part 70, and in particular in the breakage zone of the 'external end of the valve, therefore increased mechanical resistance. This is added to the distance of the external end of the valve from the sealing part of the valve mechanism 44,244 described above.
    Incidentally, such a 1,100,200 tire inflation valve structure according to the invention makes it possible to increase the possible inflation and deflation rates due to the absence of a screwed valve mechanism of the prior art, thereby reducing the passage through the tubing.
    On the other hand, such a 1,100,200 tire inflation valve structure according to the invention makes it possible to overcome the tightening stresses necessary for the valve mechanism of the prior art. This makes it possible to produce a tube 4,
    244 in a wide range of materials such as, for example, metal (aluminum, brass, steel, stainless steel ...) or plastic (polyamide, polyoxymethylene, Phenylene sulfide, Polyphthalamide, Polyimide, Polyamide-imide, etc.) loaded or not, without being exhaustive.
    Of course, it is possible to make numerous modifications to the invention without going beyond the ambit of the latter.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    claims
    1. Tire inflation valve (1,100,200) comprising a tube (4,204) defining a passage (7, 70, 71) and having an internal end (46,246) and an external end (43,243), a valve mechanism (44,244) positioned in the passage, the valve mechanism comprising a valve (443) and a seat (412) arranged so as to cooperate sealingly with each other characterized in that the seat is arranged on the pipe in the passage.
    [2" id="c-fr-0002]
    2. Inflation valve according to claim 1, characterized in that the seat is located in a limited loading area (42, 45, 46; 242.246) of the tubing.
    [3" id="c-fr-0003]
    3. Inflation valve according to claim 2, characterized in that the seat is located in the vicinity of an orifice (11) of rim (10) of the tire, during assembly of the inflation valve.
    [4" id="c-fr-0004]
    4. Inflation valve according to claim 2, characterized in that the seat is located at the internal end of the tubing, so as to be positioned inside the tire during assembly of the inflation valve .
    [5" id="c-fr-0005]
    5. Inflation valve according to one of claims 1 to 4, characterized in that the valve mechanism comprises control means (442,413, 2442) of the valve located at the outer end of the tubing.
    [6" id="c-fr-0006]
    6. Inflation valve according to one of claims 1 to 5, characterized in that the valve mechanism comprises a valve stem (442,2442) comprising a head forming the valve (443) comprising a seal (441 ) arranged so as to cooperate in a sealed manner with the seat (412) of the tube.
    [7" id="c-fr-0007]
    7. inflation valve according to one of claims 1 to 5, characterized in that the valve mechanism comprises a valve stem (442,2442) comprising a head forming the valve (443) arranged so as to cooperate sealingly with a seal (441) arranged on the seat (412) of the tubing.
    [8" id="c-fr-0008]
    8. Inflation valve according to one of claims 1 to 7, characterized in that the valve mechanism comprises return means (413) in the closed position located at the outer end of the tubing.
    [9" id="c-fr-0009]
    9. inflation valve according to claim 8, characterized in that the return means comprise a spring.
    [10" id="c-fr-0010]
    10.
    Inflation valve according to Claim 9, characterized in that the spring comprises, at one end, a first turn 4131 bearing on a support flange (701) of the tube in the passage and, at an opposite end, a turn ( 4133) in connection with a valve and an enlarged turn (4132) for guiding and stabilizing.
    [11" id="c-fr-0011]
    11. Inflation valve according to claims 6 or 7 and 10, characterized in that, the valve stem has a bulge (2441) cooperating with the turn (4133).
    类似技术:
    公开号 | 公开日 | 专利标题
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    EP1600644B1|2007-08-01|Brake device and manufacturing method
    FR2955078A1|2011-07-15|REMOVABLE SUB-ASSEMBLY AND SHUTTER ASSEMBLY FOR TOOL PASSAGE IN MOUNTING OPENINGS OF A MOTOR VEHICLE BODY MEMBER.
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    FR2595152A1|1987-09-04|PRESSURE REGULATOR
    同族专利:
    公开号 | 公开日
    US20200070600A1|2020-03-05|
    EP3625489B1|2021-08-18|
    FR3066437A1|2018-11-23|
    FR3066437B1|2021-04-09|
    CN110892183A|2020-03-17|
    WO2018210836A1|2018-11-22|
    FR3066438B1|2019-08-02|
    EP3625489A1|2020-03-25|
    引用文献:
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    US4177671A|1976-03-25|1979-12-11|Toyota Jidosha Kogyo Kabushiki Kaisha|Apparatus for sensing air-pressure drop in a tire|
    WO2016174323A1|2015-04-30|2016-11-03|Schrader|Valve for pressurised environments|
    US1447924A|1922-03-25|1923-03-06|Alexander V Chylowski|Tire valve|
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    CN203335967U|2013-06-17|2013-12-11|舟山爱搏汽配有限公司|Tire valve|
    CN103727275A|2013-11-28|2014-04-16|高密市威达环保设备有限公司|Novel valve core device|US10703149B2|2017-06-27|2020-07-07|CushCore Inc.|Air valve for tubeless pneumatic tire|
    FR3089151B1|2018-11-29|2020-11-13|Continental Automotive France|Elastic deformation inflation valve with non-axisymmetric valve body tubing|
    WO2020215015A1|2019-04-17|2020-10-22|Santa Cruz Bicycles, LLC|Inflation system for tubeless tires|
    法律状态:
    2018-07-30| PLFP| Fee payment|Year of fee payment: 2 |
    2018-11-23| PLSC| Publication of the preliminary search report|Effective date: 20181123 |
    2019-07-30| PLFP| Fee payment|Year of fee payment: 3 |
    2020-07-15| PLFP| Fee payment|Year of fee payment: 4 |
    2021-07-28| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1754289|2017-05-16|
    FR1754289A|FR3066437B1|2017-05-16|2017-05-16|IMPROVED TIRE INFLATION VALVE|PCT/EP2018/062563| WO2018210836A1|2017-05-16|2018-05-15|Improved inflation valve for tyre|
    CN201880047275.7A| CN110892183A|2017-05-16|2018-05-15|Improved tyre inflation valve|
    US16/614,025| US20200070600A1|2017-05-16|2018-05-15|Improved inflation valve for tyre|
    EP18725184.8A| EP3625489B1|2017-05-16|2018-05-15|Improved inflation valve for tyre|
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