Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G15/00—Cable fittings
  • H02G15/007—Devices for relieving mechanical stress
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G15/00—Cable fittings
  • H02G15/013—Sealing means for cable inlets
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
  • H02G3/0616—Joints for connecting tubing to casing
  • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
  • H02G3/0683—Joints for connecting tubing to casing with means for preventing disengagement of conductors with bolts operating in a direction transverse to the conductors
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/08—Distribution boxes; Connection or junction boxes
  • H02G3/081—Bases, casings or covers
  • H02G3/083—Inlets
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/08—Distribution boxes; Connection or junction boxes
  • H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets

Definitions

• the invention relates to a cable bushing for screwing with a breakthrough for the at least one cable having wall.
• a generic cable bushing is known from DE 101 43 296 A1.
• the structure of the local cable gland is suitable to so-called prefabricated cables, so lines with already
• the entire structure of the cable entry is centrally divisible, so that the cable in the split state together with a hinged and around the cable
• um2.000baren cable grommet can be inserted into the cable gland. Subsequently, the two halves of the cable gland are connected to each other, in particular verclipt together.
• Cable gland together with the prefabricated cable can then pass through a sufficiently large breakthrough, for example in the wall of a cabinet, so that the structure can be screwed by a nut and a threaded portion of the cable gland in the opening.
• the embodiment described here offers a certain tightness of the system, especially against dust and with a corresponding tightness class against moisture.
• the Buchentlastungstülle in a double function as a sealing element on the one hand and as a receiving element for the cable to the strain relief on the other hand provides a mechanical security of the cable.
• a comparable structure for receiving a plurality of strain relief grommets with cables, that is to say for carrying a plurality of cables, is also known from DE 103 47 653 A1 of the same Applicant.
• the object of the present invention is therefore to provide a
• Cable bushing according to the preamble of claim 1 indicate, which allows a high tightness of the system, and which
• protection class IP66 or IP 66/67 according to the international standard IEC 60529.
• the cable bushing according to the invention provides that the structure consists of two sub-elements, comparable to the generic state of the art. However, it is according to the invention that the division is no longer centrally, as in the sub-elements according to the prior art, but eccentrically formed, so that the extending around the at least one strain relief circumference of the receiving opening in one sub-element is greater than in the other sub-element , By this division of the two
• the detachable connection between the sub-elements is realized as a screw connection.
• the two sub-elements which are divided into the threaded portion and the receiving portion for the Buchentlastungstülle or -tüllen, are constructed according to a very advantageous development so that at least in the region of the receiving portion between the two sub-elements sealing elements are introduced.
• the seal may preferably be injection-molded onto one or both sub-elements, in particular if they are made of a plastic or fiber-reinforced plastic, in particular by an injection molding process.
• the thread of the threaded portion extends according to a
• the thread thus has one or more gaps over the circumference. This is typically sufficient to screw the structure tight, so that the absence of the thread in a portion of the circumference with respect to the attachment and the seal is not critical.
• Threaded portion may differ from the division of the receiving portion.
• Thread portion is formed without thread. This allows a very simple and efficient construction.
• the sub-element which accounts for example, 70 to 75% of the circumference in the region of the threaded portion, thereby carrying the conventional thread.
• the other sub-element which complements the scope accordingly, carries no thread.
• threaded bushings are made of a metallic material. Such threaded bushings, for example, screwed or according to an advantageous development of the idea of the material of
• Partial element can be encapsulated, allow a very simple and efficient installation of the two sub-elements against each other by means of the
• Screw-tightened screws These can also be easily loosened and screwed back, as through the metallic threaded bushes a significant wear in the area of the thread, unlike the
• a further advantageous embodiment further provides that at least one of the sub-elements in the region of the division has protruding guide elements, which engage in corresponding recesses of the respective other sub-element.
• guide elements and depressions can, in particular in the field of screws, for example, in addition to the
• Screws provided to allow easy and efficient installation.
• the one or more closed Buchentlastungstüllen with the cable are then inserted into the receiving opening of a sub-element and hold in this due to the friction, which is necessary for sealing later, very well.
• Figure 1 is a principle view of a cable duct according to the
• Figure 2 shows the structure of Figure 1 in the assembled state
• Figure 3 is a view of the upper sub-element of the cable gland from below;
• FIG. 4 shows the construction according to FIGS. 1 and 2 in a side view
• FIG. 5 shows an alternative embodiment of the invention
• Figure 6 is a view of the structure of Figure 4 from the side of
• FIG. 7 shows a further embodiment of the invention
• FIG. 8 shows a sectional view through one of the sub-elements according to FIG.
• Figure 9 shows a further alternative embodiment of the
• the cable bushing 1 consists of two sub-elements 70, 80, which are screwed together by two screws 9. Each of the sub-elements 70, 80 has a view of the viewer
• Sealing element 74, 84 which is pressed by the tightening torque of the nut 10 against the wall 6, to seal the structure with respect to the opening 5.
• the nut 10 may be made of plastic or a fiber-reinforced plastic, for example. It can in particular truss-like sections
• the mother can, as shown here, be made in one piece, since it typically has a breakthrough 5 comparable inner diameter and can be plugged over the plug 4.
• the illustration of Figure 1 has been dispensed with the internal thread of the nut 10 in the illustration.
• the receiving section 71, 72 of the cable feedthrough 1 now has a substantially rectangular receiving opening 75, 85. This is formed with a square cross-section in the embodiment of Figure 1, wherein three of the four sides are provided in the one of the sub-elements 70 and the fourth side in the sub-element 80.
• the receiving opening 75, 85 laterally has a contour in which at least in the illustration of Figure 1 from top to bottom extending surfaces are formed profiled and in the axially central region of the receiving opening 75, 85 designed narrower than in the edge regions ,
• a Switzerlandentlastungstülle 12 is now comparable to the above-mentioned prior art laid.
• This consists of an elastic material and can be folded up along a slot 13. It has a round opening 14 through which the cable section 3 is guided.
• the opening 14 is designed with a slightly smaller diameter than the outer diameter of the cable section 3, so that it comes to a tight fit.
• This dense system also allows a frictional engagement between the Buchentlastungstülle 12 in the closed state and the cable section 3, so that the functionality of the strain relief is realized, and the
• Sub-element 70 moves accordingly, rotated and / or compared to the representation in Figure 1 is turned upside down.
• the other sub-element 80 After inserting the Ceientlastungstülle 12 with the cable 3 in the receiving opening 75 of the larger of the two sub-elements 70, the other sub-element 80 is positioned accordingly.
• recesses 76 are used in the region of the partial element 70 and with the recesses 77
• Dividing joint between the sub-elements 70, 80 provide a seal.
• the addressed sealing elements 841 are designed as a flat seal, which is molded together with the sealing element 84 to the material of the sub-element 80, in the view of the sub-element 80 from below in the
• FIG. 4 shows a side view, in which it can be seen that the receiving section 71, 81 is pulled against the wall 6 via the nut 10 in order to achieve a tight contact with the wall 6.
• the two sub-elements 70, 80 of the cable feedthrough 1 can be made, for example, of plastic, preferably of a fiber-reinforced plastic.
• plastic preferably of a fiber-reinforced plastic.
• a truss structure 15 may also be provided in the region of the sub-element 70 and / or the sub-element 80, on the one hand to save material and on the other hand to achieve a very light and rigid structure.
• Detecting cable bushing 1 This also serves to carry out a ready-made cable 2 through a designated 6 wall, such as a control cabinet. It differs from the cable bushing 1 described above only in that now the receiving opening in the sub-element 70 is designed to be correspondingly larger, so that two
• Strain relief spouts 12 can be added. In the exemplary illustration of FIG. 5, only one of the strain relief grommets 12 is provided with a cable 2. Typically, the other of the strain relief grommets 12 is provided with a cable 2. Typically, the other of the strain relief grommets 12 is provided with a cable 2.
• Strain relief spouts 12 may be provided with a cable 2. Otherwise is the
• FIG. 6 In the illustration of Figure 6 is a view of the cable gland 1 according to Figure 5 from the inside of the wall 6, so typically from the inside of the cabinet to recognize.
• the sub-element 80 is shown lifted from the sub-element 70. Strain relief spouts 12 are not inserted here.
• the view first shows the tubular threaded portion 72, 82 and following this in the direction of the viewer's
• Recesses 77 cooperate in the way that a fast, reliable and accurate fitting of the sub-elements 70, 80 is possible. These are then bolted together via the screws 9 in the manner already described.
• FIG. 1 A further embodiment variant of the cable bushing 1 according to the invention can be seen in the representation of FIG.
• the representation corresponds in its point of view approximately to the representation in FIGS. 2 and 5 and shows the cable feedthrough 1 in the mounted state, but unlike in the variants described there without the strain relief spouts 12.
• two chambers 751 arranged next to one another , 752 of the receiving opening 75, 85 are shown in the larger of the sub-elements 70.
• Receiving opening 75, 85 allow the introduction of four
• Cable bushing 1 a very high tightness and in particular d
• IP66 IP67
• FIG 8 is a sectional view of this embodiment can be seen, in the region in which the receiving portion 71, 81 and the threaded portion 72, 82 meet, so that the web 79 between the two chambers 751, 752, which in the illustration 6 was to recognize, is not visible here.
• the truss structure 15 of the partial element 70 which is only shown here, can be seen in more detail in the sectional view. It can also be seen that metallic
• Threaded bushes 16 are introduced into the material of the sub-element 70. These can be screwed in principle, but in particular they should be injected, as well as in the previously described
• Embodiment variants can be realized. Such injected
• Metallic threaded bushes 16 allow for reliable bolting and application of the desired torques to the bolting to achieve the required seal. They also allow, unlike a thread in the plastic material directly, a multiple use, so that the structure can be screwed several times and screwed together again, which could lead to a thread of plastic to a considerable wear of the thread and premature failure of the component.
• the thread extends approximately over a circumference of 270 °.
• the additional circumference of 90 ° through the partial element 80 has no thread in the region of the tubular threaded section 72, 82.
• the thread 73 is thus realized only in the sub-element 70. This is particularly efficient in terms of manufacturing, since the tolerances in the
• the thread 73 on the threaded portion 72 of the sub-member 70 extends, when it exceeds an angle of about 240 °, completely out to allow the nut 10 sufficient attachment of the cable gland.
• the off-center division of the grommet 1 into the two sub-elements 70, 80 is now preferably as shown in the figure, namely in the way that the circumference of the receiving opening 75, 85 in the ratio of at least 2: 1, preferably from 3 : 1, between the sub-elements 70, 80 is formed. In the larger of the sub-elements 70 sit there
• the Switzerlandentlastungstüllen 12 so only have to be inserted there and then closes in about the same with the parting line upwards. Ideally, they will easily overflow to a sufficient later To achieve sealing.
• the other sub-element 80 is then over the
• Strain relief grommets 12 are further pressed in the direction of the sub-element 70 due to their inherent elasticity, so as to achieve a corresponding seal. It then closes in the mounted state just with the parting line.
• Sub-elements 80 contacts only one of the side surfaces of the Wernerg. 12, allows an extremely efficient seal. This allows much higher tightness than when the parting line in one of the surfaces of the Wernerattungstülle 12 meet, as is the case with the structures according to the prior art. As can be seen in the illustrations of the figures, it is so that the outer shape of the receiving portion 71, 81 of the mounted
• Cable bushing 1 is designed approximately round. This form is so common and common in many cable bushings 1, so that the structure described here, this form also realized or implemented as part of the possibilities, so as to offer the viewer at least largely the usual appearance. Only in the area of the injected threaded bushes 12 and the screws 9 was deviated slightly from the circular shape for structural reasons, in order to realize the screw and thus the higher density of the structure can. Nevertheless, the structure remains very compact in itself and has no laterally projecting over the structure protruding elements, as they

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Installation Of Indoor Wiring (AREA)
• Insulating Bodies (AREA)
• Cable Accessories (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62200437

Family Applications (1)

Country Status (6)

Families Citing this family (12)

Family Cites Families (27)

• 2017
  • 2017-05-19 DE DE102017208477.4A patent/DE102017208477A1/de active Pending
• 2018
  • 2018-05-16 US US16/614,782 patent/US11437799B2/en active Active
  • 2018-05-16 WO PCT/EP2018/062642 patent/WO2018210892A1/de active Application Filing
  • 2018-05-16 JP JP2019563776A patent/JP7296889B2/ja active Active
  • 2018-05-16 CN CN201880032803.1A patent/CN110710073B/zh active Active
  • 2018-05-16 EP EP18725810.8A patent/EP3625860A1/de active Pending

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