• 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:
    In a molded part (1) with at least one plug-in sleeve (2, 3) made of plastic and with an annular lip seal (5, 6), the lip seal (5, 6) in the plug-in sleeve (2, 3) extending over the inner circumference extending. The lip seal (5, 6) has a base portion (6) and in the axial direction (8) of the plug-in sleeve (2, 3) offset sealing lips (5), which are formed chamfered against the axial direction (8) of the plug-in sleeve (2, 3) , It has at least four offset in the axial direction of the plug-in sleeve (2, 3) sealing lips (5). The lip seal (5, 6) consists of an elastomer, which is materially connected to the outer periphery of the annular base portion (6) with the inner periphery of the plug-in sleeve (2, 3).
    公开号:AT13003U1
    申请号:TGM50028/2012U
    申请日:2012-03-27
    公开日:2013-03-15
    发明作者:Klaus Beck
    申请人:Klaus Beck；
    IPC主号:
    专利说明:

    Austrian Patent Office AT13 003U1 2013-03-15
    Description: [0001] The invention relates to a molded part with at least one plastic push-in socket and at least one annular lip seal according to the preamble of claim 1. One aspect of the invention also relates to the production of such a molded part.
    Such a known molded plastic part has at least one region which is designed as a plug-in sleeve, and is therefore also referred to as a sleeve molding in total. The molding may be a pipe molding such as a bend, a reduction, a molding for or with a throttle valve. It is used for connection to a pipe, which may be made of plastic, sheet metal, steel, VA or aluminum, or with another molded part, which is formed with a straight, nozzle-shaped end.
    Such moldings and pipes are used in ventilation systems for irrigation or drainage with or of liquids, especially in the building sector.
    In the arrangement of a molded part with a plug-in sleeve with an inserted tube or the like, the tube should be liquid-tight or gas-tightly connected to the molded part or the plug-in socket. For this purpose, a plug-in socket with lip seal is known, which is formed as an insert ring-shaped and is supplied loose, so that it can be mounted inside the socket over its inner circumference extending (brochure of the company Beck Kunststoffverformungs GmbH "Innovation May 2003, air technology for laboratories " ). The lip seal has for this purpose on the outside approaches that fit into recesses in the socket. For holding and sealing a tube or the like inserted into the plug-in socket at the installation point, two sealing lips offset in the axial direction are formed on the inside of the lip seal, which are bevelled with respect to the axial direction of the plug-in socket. With such, provided with the lip seal plug-in socket, a tight-fitting connection between the molded part with the plug-in sleeve and a pipe or the like without gluing or welding is to be realized. In this case, pipes made of materials other than plastic, such as plastic. Steel, glass, stoneware, as a pipe material can be tightly connected. In addition, it is generally required that the FormteiF / pipe connection does not solve automatically even with pressure or vacuum or vacuum inside the FormteiF / pipe connection. In other words: To release the FormteiF / pipe connection a high pull-out force should be required.
    The above-mentioned requirements for a FormteiF / pipe connection can according to the recent development of the standardization of plastic pipes (EN ISO 15494: 2003 (D)), for plastic pipes, depending on the diameter between 12 mm to 1600 mm, an excess of 0.3 up to 10 mm in diameter, can not be easily met with an annular lip seal with one or two sealing lips (s). An adhesive / welded joint instead can not be realized with large excesses.
    The state of the art of the socket / pipe connections also includes claws or clamps which may have toothing on their tube-side end as well as a central sealing ring or a central sealing profile (US 2005/0253380 A1, US Pat. No. 4,471,979 A, DE 100 06 029 A1). However, such pipe connection devices require additional manipulations for tight mounting, such as screwing the device parts together. Furthermore, they have the disadvantage that the toothed portions or inner serrated protrusions in plastic material of the tube, the strength lowering, can push or with firmer pipe materials, such as steel, stoneware, not to ensure the desired high pull-out force of the pipe joint.
    The present invention is therefore based on the object, while avoiding the disadvantages of the prior art, to provide a molded part with at least one plug-in sleeve on a molding end and with an annular lip seal, with a simple, dense FormteiF / pipe connection with high pull-out force can be realized.
    This object is achieved by a molding with the features of claim 1. 1/6 Austrian Patent Office AT13 003U1 2013-03-15
    The peculiarities of the molding made of plastic with at least one plug-in sleeve and with an annular lip seal thus consist in that the lip seal consists of an elastomer which is materially connected to the outer periphery of an annular base portion of the lip seal with the inner periphery of the plug-in sleeve and that the lip seal at least four Having offset in the axial direction of the socket coupling sealing lips.
    Thus, between the outer circumference of the annular base portion of the lip seal and the inner circumference of the plug-in sleeve no leakage occur and the at least four-lip seal, which comprises the annular base portion and at least four offset in the axial direction of the plug-in sealing lips, is together with the Plug-in sleeve robustly formed in one piece. Since the sealing lips are also chamfered against the axial direction of the molded part or its sleeve portion, they form a tight connection with high pull-out strength, because the sealing lips up to the interior of the socket under pull-out force, thus inhibit an excerpt and increase the tightness. Thus, with the at least four times injected lip seal with beveled sealing lips and large excesses of the pipes to be connected can be controlled.
    Such a lip seal on a molded part, namely the plug-in sleeve, can be easily prepared according to claim 6, that after the first injection molding syringes of the molding with the at least one plug-in sleeve made of a thermoplastic material in a second injection each lip seal an elastomer having an annular base portion and at least four offset in the axial direction of the plug-in sealing lips annularly over the inner circumference of the at least one plug-in sleeve is injected coherently in this. After the second injection molding process, the molded part is thus integrally formed with the plug-in sleeve and the at least four-fold lip seal.
    Preferably, for large excesses and extreme pressure conditions in the socket / pipe connection according to claim 2, a five-fold lip seal is injected with five offset in the axial direction beveled sealing lips in the socket of the molding. Thus, for example, a vacuum can be sealed in the sleeve / pipe connection to a suppression of 90,000 Pa and the sleeve / pipe connection maintained.
    For injecting the multiple lip seal in the socket of the molding this can consist of a thermoplastic material from the group PVC, PP, PPs, PVDF, PE and PPs-el according to claim 3. A plastic from this group can be selected depending on the application.
    According to claim 4, the plug-in sleeve of the molding advantageously an annular expansion, in which the lip seal is injected. As a result, apart from the sealing lips, the lip seal may have the same inside diameter as the adjacent section of the plug-in sleeve, which facilitates the insertion of the pipe end for producing the socket / pipe connection by secure guidance and largely eliminates damage to the multiple lip seal during assembly. The annular expansion of the plug-in sleeve in the region of the annular seal acts outwardly as an annular elevation of the plug-in sleeve, the material thickness of the plug-in sleeve wall remaining the same in the course of its axial direction.
    The annular elevation allows reliable attachment of an optional retaining clip without digging into the socket coupling teeth, tips or the like. If to secure the socket / pipe joint, which is additionally clamped together by means of the retaining clip, the retaining clip engages at most in the material of the tube, the consequent notching of the tube due to the per se good effect of the multiple lip seal can be limited so that the strength properties of the tube are largely retained. A separate sealing element, such as an O-ring, is not required in the retaining clip. Advantageously, according to claim 5, the expansion of the at least one plug-in sleeve of the molding in preferably equidistant intervals along the circumference of the expansion expansion joints, which in the axial direction of the socket to a extend the outer end face of the expansion, wherein the base portion of the lip seal extends into the expansion joints and is materially connected thereto. With the expansion joints a molding / pipe connection can be made without damage even without unfavorable fit of the pipe damage without too much force, after which the finished molding / pipe connection remains tight even under unfavorable operating conditions and withstands a high pull-out force.
    The manufacturing method for this advantageous embodiment of the molding is accordingly characterized according to claim 7, characterized in that the annular base portion of the lip seal made of elastomer into the expansion joints, which extend in the axial direction of at least one of the push-fit sleeves to the front side, is injected.
    An embodiment of a molded part according to the invention with lip seal is explained below with reference to a drawing with three figures, from the further advantageous features are removed. FIG. 1 shows a curved shaped part with end-side push-in sleeves and one on one of the
    Push-fit sleeves aligned straight pipe section, which is to be connected to this socket, in a perspective exploded view; FIG. 2 shows a section of the molded part shown somewhat larger in comparison with FIG. 1
    Area of a plug-in socket in a side view; and [0020] FIG. 3 shows the region of the molded part according to FIG. 2 in a longitudinal section.
    In Figure 1, a molded article of thermoplastic material is generally designated 1, which is arcuate in shape and is formed at each of its two ends as a plug-in sleeve 2 and 3, respectively. made of a thermoplastic material of the group PVC, PP, PPs, PVDF, PE and PPs-el, is sprayed.
    In the socket 2, a straight piece of pipe 4 is to be inserted tight and resistant to solid, which need not be made of such a plastic.
    As can be seen from Figure 1, the plug-in sleeve 2 inside a four-lip seal with four offset in the direction of the axis 8 of the socket 2 sealing lips 5 projecting from an annular base portion 6 inwardly in the socket 2. The sealing lips 5 are so beveled with respect to the axis 8, i. injected together with the annular base portion 6 in the socket 2 that they seen growing in the direction of the axis 8 from the base portion 6 continuously grow out to the interior of the socket 2.
    The sealing lips 5 and the annular base portion 6 of the lip seal are positively injected in an expansion 7 of the sleeve 2. The lip seal consists of an elastomer, which forms a material connection with the thermoplastic of the molded part.
    The expansion 7 is shown on the outside of the plug-in sleeve 2 as an annular elevation, which is suitable for conditioning a retaining clip, not shown, which can be optionally provided to increase or secure the pullout resistance.
    The plug-in sleeve 3 on the side facing away from the viewer of the molded part 1 can basically be formed as the plug-in sleeve 2.
    A positive, dense FormteiF / pipe connection can be made by pushing together the molding 1 with the straight pipe section 4. If desired, this tensile connection can be secured by applying a retaining clip, not shown, outside on the annular extension 7 of the plug-in sleeve 2 and an adjacent portion of the inserted straight pipe section 4.
    In the expansion 7 of the socket 2 along the circumference of a series expansion sleeves is recessed, of which only three with 9, 10, 11 are designated. Each of the expansion joints 3/6
    权利要求:
    Claims (4)
    [1]
    Austrian Patent Office AT 13 003 Ul 2013-03-15 extends as shown to the front side of the socket 2 and penetrates the extension 7 radially completely. After injection of the lip seal 6, 5, the expansion joints, e.g. 9, 10, 11, closed by the elastomer of the lip seal 5, 6, whose annular base section 6 extends into the recess 9 or 10 or 11 in such a way that it fills it and with the surfaces of the extension 7 delimiting the recesses Socket 2 materially, so completely sealed, is connected. REFERENCE FIGURES LIST 1 Molding 2 Plug-in socket 3 Plug socket 4 Straight piece of pipe 5 Sealing lips 6 Ring-shaped base section 7 Expansion 8 Axis 9 Expansion joint 10 Expansion joint 11 Expansion joint Claims 1. Molded part (1) with at least one plastic push-in socket (2, 3) and an annular lip seal (5 , 6), wherein the lip seal (5, 6) in the plug-in sleeve (2, 3) is arranged extending over the inner circumference and the lip seal (5, 6) a base portion (6) and in the axial direction (8) of the plug-in sleeve (2 , 3) staggered sealing lips (5), which are chamfered against the axial direction (8) of the plug-in sleeve (2, 3), wherein the lip seal (5, 6) consists of an elastomer which on the outer circumference of the annular base portion (6 ) Is materially connected to the inner periphery of the plug-in sleeve (2, 3), wherein the lip seal (5, 6) at least four in the axial direction of the plug-in sleeve (2, 3) offset sealing lips (5) and wherein the Steckmuf fe (2, 3) has an annular extension (7), in which the lip seal (5, 6) is injected, characterized in that the expansion (7) of the at least one plug-in sleeve (2, 3) along its circumference in preferably equidistant Has in the axial direction of the plug-in sleeve (2, 3) leading to an outer end face of the expansion (7) leading expansion joints (9,10, 11), and that the base portion (6) of the lip seal (5, 6) made of elastomer up to the expansion joints (9, 10, 11) extends, with which it is materially connected.
    [2]
    2. Molding (1) according to claim 1, characterized in that the lip seal (5, 6) has five in the axial direction of the plug-in sleeve (2, 3) offset sealing lips (5). 4/6 Austrian Patent Office AT 13 003 Ul 2013-03-15
    [3]
    3. molded part (1) according to claim 1 or 2, characterized in that the molded part (1) with the plug-in sleeve (2, 3) consists of a thermoplastic material of the group PVC, PP, PPs, PVDF, PE and PPs-el.
    [4]
    4. A method for Fierstellen a molding (1) with at least one plug-in sleeve (2, 3) and a lip seal (5, 6) on at least one of the push-in sleeves (2, 3), wherein after spraying the molding (1) with the at least one Plug-in sleeve (2, 3) made of a thermoplastic material in a first injection process, in a subsequent second injection process each extending over the inner periphery of the at least one plug-in sleeve (2, 3) lip seal (5, 6) made of an elastomer having an annular base portion ( 6) and at least four in the axial direction (8) of the at least one plug-in sleeve (2, 3) offset sealing lips (5) in the axial direction (8) of the at least one plug-in sleeve (2, 3) are chamfered in the at least one plug-in sleeve (2 , 3) is injected, characterized in that the annular base portion (6) of the lip seal (5, 6) made of elastomer to expansion joints (9, 10, 11), in the axial direction of the at least one of the push-in sleeves (2, 3) to to a Run side of at least one plug-in sleeve (2, 3), is injected. For this 1 sheet drawings 5/6
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    同族专利:
    公开号 | 公开日
    DE102011015462A1|2012-10-04|
    DE202012003173U1|2012-04-27|
    DE102011015462B4|2021-07-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2999699A|1958-10-06|1961-09-12|Universal Sewer Pipe Corp|Pipe joint|
    DE2603393A1|1975-01-31|1976-08-19|Hepworth Iron Co Ltd|METHOD OF MANUFACTURING A PLASTIC PIPE CONNECTOR AND DEVICE FOR CARRYING OUT THE METHOD|
    US4664421A|1986-08-29|1987-05-12|Jones William D|Forgiving profile pipe gasket|
    US5180197A|1991-10-07|1993-01-19|Thompson Jr Ernest R|Pipe jointing system|
    WO2006090277A1|2005-02-22|2006-08-31|Fabrizio Rivoli|Toothed seal ring for pipe joining|
    US4471979A|1982-03-15|1984-09-18|Victaulic Company Of Canada Limited|Quick-connect coupling for thin-walled pipes|
    DE10006029A1|2000-02-10|2001-08-30|Uwe Vieregge|Arrangement for connecting two pipes|
    JP2002295750A|2001-03-28|2002-10-09|Nippon Chutetsukan Kk|Collar for pipe joint|
    US7086131B2|2004-05-14|2006-08-08|Victaulic Company|Deformable mechanical pipe coupling|
    DE102005008674A1|2005-02-25|2006-08-31|Bayerische Motoren Werke Ag|Mount coupling comprises a seal ring that projects inwards together with coupling unit that is sealed to projection of a pipe support and has chamber to receive ejections from injection tool|
    US20100078937A1|2005-06-10|2010-04-01|S & B Technical Products, Inc.|Self Restrained Ductile Iron Fitting|CN103644417A|2013-11-28|2014-03-19|贵州中通塑业有限公司|Plastic pipe bending joint|
    GB2587792A|2019-08-16|2021-04-14|Bows Peter|Improvements in single part water piping and plumbing|
    法律状态:
    2018-03-15| PC| Change of the owner|Owner name: MARKUS WILLI BECK, DE Effective date: 20180209 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102011015462.0A|DE102011015462B4|2011-03-29|2011-03-29|Process for producing a molded part|
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