• 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 present invention relates to an arrangement for providing a vibratory and pressure-resistant connection of two pipe ends (11). The arrangement comprises two-tube ends which are connected to an elastic hose which houses a circular-cylindrical tube (21) which is shorter than the elastic hose (20) and is located in the center of the hose (20). The respective pipe end (11) is inserted from the opposite end of the denelastic hose (20) into the pipe (21). The respective pipe end (11), or the inside of the circular-cylinder tube, is provided with a groove (17) in which an O-ring (18) is arranged as a seal between the respective pipe end (11) and the circular-cylindrical tube (21). (Fig. 1)
    公开号:SE1050082A1
    申请号:SE1050082
    申请日:2010-01-26
    公开日:2011-07-27
    发明作者:Ragnar Bucksch；Stefan Hultqvist
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    Summary of the Invention The present invention has for its object to meet the above-mentioned needs. The object is achieved by an arrangement according to claim 1.
    The desired resistance to vibration is obtained by the elastic hose included in the arrangement acting as a damping that absorbs some of the vibrations and movements between the pipe ends, while the circular-cylindrical pipe extending between the pipe ends ensures a reliable seal that can withstand high pressures. Furthermore, this arrangement does not comprise any complicated parts and is easy to mount when the pipe ends are pushed into the elastic hose and further into the circular-cylindrical tube to the intended position where the O-ring seals between the respective pipe end and the circular-cylindrical tube.
    A further advantage of this arrangement is that the elastic hose, the ends of which extend past the ends of the pipe, forms a dirt and dust protection for the O-ring joint, which increases the service life of the O-ring joint considerably as it is not exposed to the same amount of dust and dirt.
    In an advantageous embodiment of the arrangement, the groove for the O-ring is arranged in the respective pipe end. This embodiment has the advantage that it is easier to manufacture than to arrange the groove in the inner surface of the tube as all machining for the O-rings is done in the outer periphery of the tube ends instead of in the inner surface of the circular-cylindrical tube.
    In another advantageous embodiment of the arrangement, the groove for the O-ring is arranged near the outer end of the respective pipe end. This embodiment has the advantage that the length of the circular-cylindrical tube can be reduced as the respective tube end does not have to be pushed so far into the tube in order to obtain a reliable seal.
    In a further advantageous embodiment of the arrangement, a hose clamp is arranged at each end of the elastic hose which applies a radial force towards the hose and the pipe end. This embodiment of the invention increases the reliability of the arrangement when the elastic hose is held in place relative to the pipe ends by means of the hose clamps which also generate a reliable secondary seal between the pipe end and the inner surface of the elastic hose which provides additional security if the O-ring of any reason would not seal between the circular-cylindrical tube and the tube ends.
    In a further advantageous embodiment of the arrangement, each pipe end has a bead which extends around the circumference of the pipe end and has a larger diameter than the inner diameter of the elastic hose and is intended to abut against the inner surface of the elastic hose.
    This bead means a further improved seal between the inside of the hose and the pipe end, and helps to ensure that the elastic hose does not slip off the pipe ends.
    In a further advantageous embodiment of the arrangement, the hose clamp is arranged on the opposite side of the bead relative to the end of the pipe end, i.e. around the socket section.
    This placement results in a reliable seal between the hose and the pipe ends.
    In a further advantageous embodiment of the arrangement, the tube is fixed in the elastic hose with an adhesive or a mechanical locking. This embodiment ensures that the tube is kept in the intended place in relation to the elastic hose, which ensures the function of the arrangement.
    The arrangement according to one of the embodiments above can advantageously be used in, for example, different types of vehicles, or systems such as, for example, cooling systems in vehicles.
    Brief description of the figures The invention is explained in more detail below with reference to the accompanying drawings, in which Fig. 1 shows a first embodiment of an arrangement according to the invention, and Fig. 2 shows a second embodiment of the arrangement.
    Detailed description of the invention Fig. 1 shows a first embodiment of the arrangement for sealing connection of two pipe ends 11 to each other. lFig. 1, the arrangement is shown in section along the longitudinal axis of the arrangement to clearly illustrate how the various parts included in the arrangement are designed.
    The arrangement is used as previously described to connect two pipe ends 11 in such a way that it can withstand a large internal pressure and be resistant to vibrations. In the embodiment shown in Fig. 1, these two pipe ends 11 terminating two pipes 12 each have substantially the same design. Closest to these tubes with circular cross-sections, the tube ends 11 have a socket section 13 which is substantially circular-cylindrical with a diameter slightly smaller than the diameter of the tubes so that a lug 14 is formed between the socket section 13 and the tube 12. However, the socket section may also have substantially the same or larger diameter. .
    The stub section 13 ends at the opposite end with a bead 15 with a slightly larger diameter than the stub section 13 and which extends around the circumference of the stub section 13. The bead 15 in this embodiment has a rounded outer surface and its width in the axial direction is slightly greater than the height of the bead relative to the bump section 13. From the side of the bead 15 facing from the bump section 13 extends a circular cylindrical end section 16, coaxial with the bump section 13 and the longitudinal axis A of the arrangement. The end section has a substantially constant diameter which is slightly smaller than the diameter of the socket section 13.
    Near the outer end of the end section 16, a groove 17 extends around the circumference of the end section 16. The groove 17 houses an O-ring 18. Outside the groove 17, the end section 16 ends with a rounded corner surface 19. A passage extends through the entire pipe end 11 which connects to the channel in the pipe.
    The arrangement further comprises an elastic hose 20 with circular cross-section which is intended to connect the two pipe ends 11. The inner diameter of the hose 20 is slightly smaller than the outer diameter of the socket section 13 so that the hose in mounted condition seals against the outer surface of the pipe section when the hose 20 is threaded.
    In the elastic hose, mainly in the center of the hose, a tube 21 is arranged.
    The tube is substantially rigid and is thus not elastic. The length of the tube 21 is less than the length of the elastic hose 20. The outer diameter of the tube 20 substantially corresponds to the inner diameter of the hose 20 and is preferably fixed in the elastic hose 20 to be held in the desired position relative to the hose 20. The tube 21 is attached to the hose 20, for example with an adhesive adhering to the hose 20. inner surface and the outer surface of the tube so that a chemical bond between tube 21 and hose 20 is obtained, alternatively a mechanical locking such as for example a locking pin in combination with recesses or the like (not shown in the figures). The inner diameter of the tube 21 is selected in such a way that it is slightly smaller than the outer diameter of the O-ring when it is placed in the groove 17 so that the desired compression of the O-ring for optimal sealing between the inner surface of the tube 21 and the end section 16 of the tube end is obtained.
    When connecting the pipe ends 11, the elastic hose 20 is threaded, with the associated pipe 21 on each pipe end 11, so that the portions of the elastic stroke at its ends which do not accommodate the pipe 21 abut the outer surfaces of the socket sections 13. The rounded corner surface 19 facilitates threading of the elastic hose 20 and the tube 21 which is threaded on each tube end 11 so that the hose 20 abuts against the lugs 14 on the respective tube end 11. At each end of the hose 20, between the lug 14 and the bead 15 a hose clamp 25 is placed around the hose 20 to ensure a good seal between the inner surface of the hose and the socket section 13. The hose clamp, which comprises a band running around the hose and a clamping device, such as a screw connection, is tightened when the hose is in the correct position and thereby prevents the hose from accidentally sliding off the pipe end 11. This is also prevented by the bead 15, the larger diameter of which locks the hose in the intended position on the respective pipe end.
    The bead 15 is not necessary for the arrangement but means that the reliability of the arrangement is further increased.
    The length of the tube 21 is chosen so that when the hose 20 is positioned in the intended place abutting the lug 14, the tube extends past the respective O-rings so that the O-ring seals against the inside of the tube. The pipe, in combination with the O-ring and the groove 17, forms a seal that can withstand high internal pressures. An advantage of this arrangement is thus that the tube, instead of, as in previously known solutions, the elastic hose, absorbs the high internal pressure which would otherwise cause cracks in the elastic hose.
    If the O-ring seal against the inside of the tube for some reason after a period of use would not withstand the internal pressure, this results in a small leakage which is taken care of by the seal of the elastic hose against the outer surface of the socket section 13. This arrangement thus forms a reliable connection between the pipe ends 11 where vibrations are absorbed by the portions of the elastic hose which do not accommodate any pipe while the pipe 21 in the hose is resistant to any high internal pressure which otherwise risks damaging the elastic hose 21.
    Fig. 2 shows an alternative embodiment of the arrangement according to the invention. This embodiment of the arrangement comprises the same parts as the arrangement as described above, but differs from this in that a groove 22 for an O-ring 23, intended to seal the connection between the pipe 21 and the pipe end 11, is now accommodated in the inner surface of the pipe.
    The invention has been described above on the basis of two exemplary embodiments.
    However, the invention is not limited to these but is defined on the basis of the appended claims. The arrangement can be designed in different ways as long as the internal relations between the constituent details correspond to each other.
    权利要求:
    Claims (7)
    [1]
    Arrangement for connecting two pipe ends (11), the arrangement comprising two pipe ends (11) with a circular cross-sectional shape and the same radius and characterized in that it further comprises an elastic hose (20) which houses a circular-cylindrical pipe (21), wherein the pipe (21) outer diameter corresponds to the inner diameter of the elastic hose (20) while its inner diameter corresponds to the outer diameter of the tube ends (11), the circular-cylindrical tube (21) being shorter than the elastic hose (20) and located in the center of the hose (20); wherein the respective pipe end (11) is inserted from the opposite end of the elastic hose (20) into the pipe (21) and that the pipe ends (11), in the area where the pipe ends (11) are overlapped by the circular-cylindrical pipe (21), or the circular-cylindrical the inside of the tube, are provided with a groove (17; 22) which extends around the circumference of the tube end (11), or the inside of the circular-cylindrical tube, so that an O-ring (18; 23) can be arranged in the groove (17; 22). as a seal between the respective pipe end (11) and the circular-cylindrical pipe (21), each end of the elastic hose (20) abutting the respective pipe end (11).
    [2]
    Arrangement according to Claim 1, characterized in that the groove (17) for the O-ring (18) is arranged in the respective pipe end (11).
    [3]
    Arrangement according to claim 1 or 2, characterized in that the groove (17) for the O-ring (18) is arranged near the end of the pipe end (11).
    [4]
    Arrangement according to Claim 1 or 2, characterized in that a hose clamp (25) is arranged at each end of the elastic hose (20), which hose applies a radially directed force towards the hose (20) and the pipe end (11).
    [5]
    Arrangement according to any one of claims 1 to 4, characterized in that each pipe end (11) has a bead (15) which extends around the circumference of the pipe end and has a larger diameter than the inner diameter of the elastic hose (20) and is intended to abut against the inner surface of the elastic hose (20). 8
    [6]
    Arrangement according to claim 5, characterized in that the hose clamp (25) is arranged on the opposite side of the bead (15) relative to the end of the pipe end (11).
    [7]
    Arrangement according to one of Claims 1 to 6, characterized in that the tube (21) is fixed in the elastic hose (21) with an adhesive or a mechanical lock.
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    同族专利:
    公开号 | 公开日
    SE534478C2|2011-09-06|
    DE102011009381A1|2011-07-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1050082A|SE534478C2|2010-01-26|2010-01-26|Arrangement for connecting two pipe ends|SE1050082A| SE534478C2|2010-01-26|2010-01-26|Arrangement for connecting two pipe ends|
    DE201110009381| DE102011009381A1|2010-01-26|2011-01-25|Device for sealed connecting of tube ends in cooling system of car, has o-rings arranged in grooves as seal between ends and cylindrical pipe, where each end of resilient hose lies at outer surface of respective tube ends in sealed manner|
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