• 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:

    公开号:SE535249C2
    申请号:SE0950978
    申请日:2009-12-17
    公开日:2012-06-05
    发明作者:Lars-Olof Karlsson
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    25 30 535 249 or poor sealing against the cable or when the cable is not round enough.
    Based on this prior art, the person skilled in the art is thus faced with the task of providing a cable gland which is easy to manufacture and assemble and in addition achieves a sufficient tightness as well as a strain relief and reduces the risk of cable damage.
    This object is solved by a cable gland with the features of claim 1. Advantageous designs appear from the dependent claims and the following description.
    A cable gland according to the invention for passing a cable through a wall has an upper part with an upper part opening for receiving the cable, the upper part defining an inner cone. Furthermore, the cable gland has a lower part with a lower part opening for receiving the cable and an elastic sealing ring arranged between the upper part and lower part with a sealing ring opening for receiving the cable. According to the invention, the elastic sealing ring in the mounted condition of the cable gland is actuated by the inner cone and lower part of the upper part, so that the cable received from the sealing ring opening is clamped by the sealing ring and thereby deformed so that a force-locked lock and tight connection or contact is formed between the cable and the sealing ring. wherein there is a degree of filling between the cable and the sealing ring exceeding 1. A joint is tight when the passage of unwanted substances, such as water or gases, is restricted or completely prevented. The desired degree of tightness depends in particular on the purpose of use.
    The degree of filling is defined as the ratio between the total volume of the sealing ring in the mounted condition of the cable gland and the volume which in the mounted condition is outside the original cable diameter. The degree of filling can be arbitrarily adapted to the respective purpose of use by properly designing the individual elements of the cable gland. Advantages of the Invention With the solution according to the invention, by a gentle deformation of the cable, both a tight joint, which in particular meets the | P69K standard, and a strain relief can be achieved. The elastic sealing ring is deformed, for example squeezed or curved, whereby its inner diameter is reduced so that a sufficient deformation of the cable can be achieved to ensure both a seal and a strain relief. The cable gland can easily be manufactured, for example, as a casting part and easily mounted. Non-round cables are also adapted to the sealing ring by the deformation, so that a good seal is achieved. The tightness is maintained even with aging or compression settings. The cable gland is suitably made of plastic and / or brass.
    Preferably, in the mounted condition of the cable gland, there is a degree of filling between cable and sealing ring of at least 1.2 or 1.5, according to another advantageous design of at least 1.7. In this way a tight and strain-relieving connection can be achieved, without causing damage to the cable as a result of an excessive squeezing. Preferably, the degree of filling is in the range between 1 and 2.
    Suitably, a sealing element is arranged between the upper cable duct and the cable received in the upper opening, in order to prevent the penetration of contaminants into the upper cable duct. The upper part and the lower part are designed to be lockable to each other. By locking the two parts, a quick, in particular also mechanical, assembly of the cable gland can take place, whereby a twisting of the two parts can also be avoided, so that there is no risk of cable twisting. Consequently, in a mounting step, a seal and a strain relief can be achieved simultaneously. Preferably, the locking connection between the upper part and the lower part is releasable. A screw connection between the upper part and the lower part can also be expedient, for example when a locking device cannot provide the necessary fastening force.
    According to a preferred embodiment, the lower part is connected in one piece to the wall. The lower part can be formed in the wall, for example by an injection molding method. Thereby, a separate lower part can be dispensed with, which leads to a considerable saving of building parts.
    According to another embodiment, the lower part is provided with a fastening member, preferably an outer thread, for attachment to the wall. Thus, a cable gland according to the invention can also be attached to walls in retrospect.
    Suitably, a sub-section cable duct connects to the sub-section opening and the cable received in the sealing ring opening is so deformed in the mounted condition of the cable gland that a force-locked locking and tight connection is formed between the cable and the sub-sub-cable duct. Due to the squeezing of the cable through the sealing ring, a bulge of the cable next to the sealing ring arises when duly designed, which leads to an additional seal and, where applicable, strain relief between the cable and the lower part of the cable gland.
    According to a further preferred embodiment, the lower part defines a lower part inner space with a step delimiting the lower part cable duct and a recess surrounding the step, the elastic sealing ring in the mounted condition of the cable bushing being affected by the inner cone of the upper part and the lower part step so that it is received in the sealing ring opening. the cable is clamped by the sealing ring and thereby deformed. By this special design of the lower part, a defined deformation and squeezing of the received cable can be achieved, in order to obtain the desired tightness and tensile load. The tightness and / or strain relief can be further increased if an upper part cable duct connects to the upper part opening and the cable received in the sealing ring opening is so deformed in the mounted condition of the cable gland that a force-locked locking and tight connection is formed. between the cable and the top cable duct. The inner cone is designed with a first cone area for controlling the sealing ring and a second cone area for influencing / supporting the sealing ring, the first cone area being flatter than the second cone area. As a result, a simple assembly of the cable gland is ensured, since a self-centering arrangement of the sealing ring is achieved. The first flatter cone area picks up the sealing ring and leads it to the second steeper cone area. Consequently, in particular, conventional round sealing rings with a round cross-section, so-called O-rings, can also be used, which leads to a cost reduction.
    Suitably the second cone area is limited in the direction of the upper cable duct by a ring surface, which in particular serves as abutment for the sealing ring.
    This can prevent the sealing ring from moving too far along the inner cone.
    Suitably, the first cone area in the mounted condition of the cable gland is received in the sink. In this way, a compact construction of the cable gland can be achieved, in which substantially no major voids are found.
    According to a further particularly preferred embodiment of the invention, the elastic sealing ring has a flange which, in the mounted condition of the cable gland, extends through the upper part opening. In this design, in particular a top cable duct can be dispensed with, so that the top can be made more compact. Expediently, the deformation of the cable achieves a, in particular force-read and / or tight, connection or contact between the cable and the flange of the sealing ring. Consequently, an equally tight and strain-relieving connection as in the presence of a top cable duct can be achieved. The lower part defines a lower part inner space with a surface delimiting the lower part cable duct, wherein the elastic sealing ring in the mounted condition of the cable gland is affected by the inner cone of the upper part and the lower part surface, so that the cable received in the sealing ring opening is clamped by the sealing ring. Due to the even limitation of the lower part, the size of the cable gland can be further reduced. Appropriately, the sealing ring bends due to the inward influence. This can be achieved, for example, by a proper design of the ring, whereby the curvature in particular can take place relative to a present one.
    Further advantages and embodiments of the invention appear from the description and the accompanying drawings.
    It is to be understood that the above-mentioned features and those explained below may be used not only in the combination set forth herein, but also in other combinations or independently, without departing from the scope of the present invention.
    The invention is illustrated schematically with reference to exemplary embodiments shown in the drawings and described in detail below with reference to the drawings.
    Description of the figures Figure 1a shows a first preferred embodiment of a cable gland according to the invention in a plane and a perspective cross-sectional view in a disassembled condition. Figure 15b shows the embodiment according to Figure 1a in assembled condition.
    Figure 2a shows a second preferred embodiment of a cable gland according to the invention in a disassembled condition.
    Figure 2b shows the embodiment according to Figure 2a in assembled condition.
    Figure 3a shows a third preferred embodiment of a cable gland according to the invention in a plane and a perspective cross-sectional view in a disassembled condition.
    Figure 3b shows a third preferred embodiment according to figure 3a in assembled condition.
    Below, fi gures 1a and 1b and 2a and 2b are described in a coherent and overarching manner, wherein the same or acting in the same way are provided with the same reference numerals. Figures 1a and 1b show a first preferred embodiment of a cable bushing 100 according to the invention and Figures 2a and 2b show a second preferred embodiment 200 of the cable bushing according to the invention, which differs from the embodiment 100 as regards the design of the lower part.
    The cable gland 100 has an upper part 110, a lower part 120 and a sealing ring 130 arranged between upper part 110 and lower part 120. In the cable gland 100 a cable 140 is received. The sealing ring 130 is here formed as an O-ring with a sealing ring opening 131 for receiving the cable 140. The lower part 120 has a lower part opening 121 and an adjoining lower part cable duct 122, which is delimited by a step 123.
    The step 123 in turn is surrounded by a recess 124. The lower part 120 defines a lower part inner space 125. The upper part 110 has an upper part opening 111 and an upper part cable channel 112 which connects thereto. The upper cable duct channel is defined by a plane 113. The upper part 110 defines an inner cone 114 with a first conical area 115 for guiding the sealing ring 130 and a second conical area 116 for influencing / supporting the sealing ring 130. The upper part 110 further has locking lugs 117 for locking the upper part 110 with lower part 120.
    When mounting the cable gland 100, the upper part 110 is inserted into the lower part 120 and inserted with pressure until it is locked with the lower part 120. Thereby the sealing ring 130 is pressed downwards, until it abuts against step 123. In addition, the sealing ring 130 is taken by the first conical area 115 and is moved to the second conical region 116. Upon further insertion of the upper portion 110 into the lower inner space 125, the sealing ring 130 is actuated by the surface 113, the second conical region 116 and the step 123, so that it is pushed inwards and deforms the cable 140.
    By means of the deformation of the cable, a degree of filling can be determined, which is defined by the ratio between the total volume A + B of the sealing ring and the volume B of the sealing ring, which is outside the original, non-compressed cable diameter. A preferred degree of filling is about 1.5 to 1.7. Due to the deformation of the cable 140, bulges of the cable 140 arise below and above the sealing ring 130 at the places 151 and 152, which lead to a further sealing and strain relief between the cable and the lower part at 152 and the cable and the upper part at 151, respectively.
    The second embodiment 200 of the cable gland illustrated in Figures 2a and 2b, in contrast to the cable gland 100, has a lower part 220, which is connected in one piece to the surrounding wall 260. In the example shown, the lower part 220 is formed by spraying. the casting of the wall. The wall and the inserted cable conductor of the cable are not explained in more detail. In the following, Figures 3a and 3b are described coherently and overall, wherein the same or similarly acting elements are provided with the same reference numerals. Figure 3a shows a third embodiment of an inventive cable bushing illustrated in a plane and a perspective cross-sectional view and designated 300. Figure 3a shows the cable bushing 300 in a disassembled condition. Figure 3b shows the cable gland 300 in the assembled condition.
    The cable gland 300 has an upper part 310, a lower part 320 and a sealing ring 330 arranged between upper part 310 and lower part 320. A cable 340 is received in the cable gland 300. The sealing ring 330 has a sealing ring opening 331 for receiving the cable 340 and a flange 332. The upper part 310 has an upper part opening 311. The upper part 310 defines an inner cone 314 for actuating the sealing ring 330.
    The lower part 320 has a lower part opening 321 and a connecting lower part cable duct 322, which is delimited by an annular plane or surface 323. The lower part 320 defines a lower part inner space 325. The lower part 320 further has locking lugs 327 for locking the upper part 310 with the lower part 320.
    The reading through the locking lugs 327 is detachable.
    When mounting the cable gland 300, the upper part 310 is pushed into the lower part 320 and inserted with pressure, until it is locked with the lower part 320. The sealing ring 330 is then pressed downwards, until it abuts the surface 323. In addition, the sealing ring 330 is taken by the inner cone 314 and bent inwards in the direction of the cable 340, deforming the cable 340.
    By means of the deformation of the cable, a degree of filling can also be determined, which is defined by the ratio between the total volume A + B of the sealing ring and the volume B of the sealing ring, which is outside the non-compressed cable diameter. A preferred degree of filling is about 1.5 to 1.735. Due to the deformation of the cable 340, bulges of the cable 340 arise below and above the sealing ring 330 at the places 351 and 352, which lead to a further sealing and strain relief between the cable and the O-ring at 351 and the cable and the lower part at 352, respectively.
    It will be appreciated that only examples of embodiments of the invention are illustrated in the figures. In addition, every other embodiment is conceivable, without deviating from the scope of this invention.
    权利要求:
    Claims (13)
    [1]
    A cable gland for passing a cable (140; 340) through a wall (260), comprising an upper part (110; 310) with an upper part opening (111; 311) for receiving the cable (140; 340), the upper part (110 ; 310) defines an inner cone (114; 314), a lower part (120; 220; 320) with a lower part opening (121; 321) for receiving the cable (140; 340) an intermediate upper part (110; 310) and lower part (120; 220; 320) arranged elastic sealing ring (130; 330) with a sealing ring opening (131; 331) for receiving the cable (140; 340), the elastic sealing ring (130; 330) in the cable gland (100; 200; 300) ) mounted condition is affected by the inner cone (114; 314) and the lower part (120; 220; 320), so that the cable (140; 340) received in the sealing ring opening (131; 331) is clamped by the sealing ring (130; 330) and thereby deformed so that a force-locked locking and tight connection is formed between the cable (140; 340) and the sealing ring (130; 330), characterized in that a top cable duct (1 12) connects to the top opening (111; 311) and / or a lower part cable duct (122; 322) connects to the lower part opening (121; 321), and the cable (140; 31) received in the sealing ring opening (131; 331) is clamped and deformed by the sealing ring (130; 330) so that a force-locked locking and tight connection is formed between the cable (140; 340) and the upper cable duct (112) and / or the lower cable duct (122; 322) by means of a bulge of the cable (140).
    [2]
    2.. Cable bushing according to claim 1, wherein in the mounted condition of the cable bushing (100; 200; 300) a degree of filling between the cable (140; 340) and the sealing ring (130; 330) of at least 1 to 1.5, preferably at least 1.7, is available.
    [3]
    3.. Cable gland according to claim 1 or 2, wherein the upper part (110; 310) is lockable with the lower part (120; 220; 320).
    [4]
    4.. Cable gland according to one of the preceding claims, wherein the lower part (220) is connected in one piece to the wall (260).
    [5]
    5.. Cable bushing according to one of Claims 1 to 4, in which the lower part has a fastening member, preferably an outer passage, for fastening to the wall.
    [6]
    6.. Cable bushing according to any preceding claim, wherein the lower part (120; 220) defines a lower part inner space (125) with a step (123) delimiting the lower part cable duct (122) and a recess (124) surrounding the step (123), the elastic sealing ring (130) mounted in the condition of the cable gland (100; 200) is affected by the inner cone (114) of the upper part and the step (123) of the lower part, so that the cable (140) received in the sealing ring opening (131) is clamped by the sealing ring (130) and thereby nom deformeras.
    [7]
    7.. Cable gland according to one of the preceding claims, wherein a sealing element is provided between the upper part of the cable duct (112) and the cable (140) received in the upper opening (111).
    [8]
    8.. A cable gland according to any preceding claim, wherein the inner cone (114) has a first cone region (115) for guiding the sealing ring (130) and a second cone region (116) for actuating the sealing ring (130), the first cone region (115) being flatter designed than the other economic area (116). 535 249 13
    [9]
    The cable gland of claim 8, wherein the second cone region (116) is defined by an annular plane (113) toward the top cable duct (112).
    [10]
    A cable gland according to any one of claims 8 or 9, wherein the first cone region (115) in the mounted condition of the cable gland (100; 200) is received in the depression (124).
    [11]
    Cable bushing according to one of the preceding claims, wherein the elastic sealing ring (330) has a shaft (332) which, in the state of the cable bushing 10 (300) mounted, extends through the upper part opening (311).
    [12]
    A cable according to any preceding claim, wherein the lower part (320) defines a lower part inner space (325) with a surface (323) delimiting the lower part cable duct (322), the elastic sealing ring (330) in the mounted condition of the cable gland being affected by the interior of the upper part - the cone (314) and the surface (323) of the lower part, so that the cable (340) received in the sealing ring opening (331) is clamped by the sealing ring (330) and thereby deformed. 20
    [13]
    Cable gland according to claim 12, wherein the sealing ring (330) is bent inwards as a result of the action.
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    同族专利:
    公开号 | 公开日
    SE0950978A1|2010-06-30|
    DE102008063192A1|2010-07-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE6602717U|1967-02-11|1969-06-19|Walter Roehl|CABLE GLANDS|
    DE1911407A1|1969-03-06|1970-10-01|Lapp Kg U I|Waterproof cable entry for cables and wires|
    DE2547914A1|1975-10-25|1977-05-05|Buendoplast Gmbh|Cable connector with tension relief - has ring seal and clamping ring pressed by internal cone|
    DE7622470U1|1976-07-16|1982-03-18|U.I. Lapp Kg, 7000 Stuttgart|Cable gland with seal, strain relief and anti-twist device|
    DE29801759U1|1998-02-03|1998-03-12|Pflitsch Gmbh & Co Kg|Device for the sealed laying of pipes|
    DE202004019698U1|2004-12-21|2005-03-03|Pflitsch Gmbh & Co. Kg|Screwing for tightening conductor through guides as for electrical cables in housing walls has elastic insert between threaded tube and screw|DE202011000707U1|2011-03-29|2011-09-07|Zellner Gmbh|Fluid-tight strain relief|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102008063192A|DE102008063192A1|2008-12-29|2008-12-29|Cable bushing for guiding cable through housing wall, has elastic sealing ring that is loaded to squeeze and deform cable for forming force-fit and tight connection between cable and sealing ring|
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