EP2269278A1 - Cable entry device - Google Patents

Cable entry device

Info

Publication number
EP2269278A1
EP2269278A1 EP08716437A EP08716437A EP2269278A1 EP 2269278 A1 EP2269278 A1 EP 2269278A1 EP 08716437 A EP08716437 A EP 08716437A EP 08716437 A EP08716437 A EP 08716437A EP 2269278 A1 EP2269278 A1 EP 2269278A1
Authority
EP
European Patent Office
Prior art keywords
cable entry
insert
frame
cable
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08716437A
Other languages
German (de)
French (fr)
Inventor
Paul Tapper
Christian Malm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TST Tapper Sealing Technology AB
Original Assignee
TST Tapper Sealing Technology AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TST Tapper Sealing Technology AB filed Critical TST Tapper Sealing Technology AB
Publication of EP2269278A1 publication Critical patent/EP2269278A1/en
Withdrawn legal-status Critical Current

Links

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
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/081—Bases, casings or covers
    • H02G3/083—Inlets
    • H02G3/085—Inlets including knock-out or tear-out sections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/14—Sealing for double-walled or multi-channel pipes

Definitions

  • the present document relates to an entry system for cables and pipes.
  • the present disclosure relates to a cable entry insert and a cable entry frame according to the appended independent claims.
  • a multigate grommet is an IP gasket combined with a cable gland plate with several pre-prepared cable grommets.
  • the multigate grommet is adapted to fit a standard panel cutout pattern, such as e.g. according to the FL 13 or FL 21 standard.
  • the multigate grommets are inflexible, in that each multigate grommet has a predetermined hole setup.
  • some such multigate grommets present one or more knock-out entry holes or otherwise openable holes, which cannot be closed if a different cable is to be used.
  • DE10225046A1 discloses a flexible cable entry system, comprising a snap frame that is adapted to fit a standard panel cut-out pattern, such as e.g. according to the KEL 16 or KEL 24 standard.
  • the snap frame is adapted to receive a cable inlet frame, which in turn is adapted to receive a plurality of grommets.
  • the grommets are arranged in a first half of the cable inlet frame, after which a second part of the cable inlet frame is assembled with the first half, so as to clamp the grommets between the first and second parts. Subsequently, the cable inlet frame is snap-fitted into the snap frame.
  • the cable entry system comprises many components and is bulky, in particular as seen in a direction normal to the plane of the panel in which the snap frame is fitted.
  • Roxtec International AB Another system of entry plates is marketed by Roxtec International AB, which is based on the system disclosed in WO2004112211. This system is bulky, in particular as seen in a direction normal to the plane of the panel in which the snap frame is fitted.
  • the invention is based on the discovery that many cable entry systems appear to have a common denominator in the integer multiple of about 17 mm.
  • a cable entry insert formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in a cable entry frame characterised in that the lengths of main sides of the body are integer multiples of about 15-18mm. In a particular embodiment, the main sides of the body are an integer multiple of about 17 mm.
  • main sides is meant the sides that defines the rectangular body.
  • about 15-18 mm is meant that the main side lengths are essentially integer multiples of said values, but may, with due consideration to manufacturing tolerances, also vary in a range from about -0.1 mm to about +0.1 mm, or preferably from about -0.05 mm to about +0.05 mm.
  • an insert which may be used in at least the conventional standard systems for cable entries, FL 21 , FL 13, KEL 24 and KEL 16.
  • the lengths of the main sides of the body may be integer multiples of about 16.5-17.5 mm or about 16.6-17.2 mm. In one specific embodiment, the lengths of the main sides of the body may be integer multiples of about 17 mm.
  • the body may present a front side and a rear side, and the rear side may be provided with locking means adapted for mechanically locking together said cable entry insert with a second, similar cable entry insert , when said cable entry insert and said second cable entry insert are arranged adjacent each other and in a common plane.
  • the locking means there is provided a way of interconnecting one or more inserts, thereby giving the user a large variety of combination possibilities, with regards to different types of inserts for different types and sizes of cables.
  • the locking means may comprise a locking groove or locking ridge, arranged on the rear side of the cable entry insert, and locking device, arranged to engage the locking groove or locking ridge of a second similar cable entry insert.
  • a locking groove or ridge which may receive and engage a protruding locking device, facilitates an easy and fast way of connecting one or more inserts.
  • the locking device may be arranged to protrude from a portion of the edge of the cable entry insert.
  • the protruding portion enables a simple interconnection of the inserts.
  • the locking groove or ridge may extend in parallel with an edge of the cable entry insert and it may extend along only a portion of the edge of the cable entry insert.
  • the partial extension of the locking groove provides a stop function, i.e. when the inserts have been connected to each other they are prevented from slipping, and are thereby easy to position correctly relative to each other.
  • the edge of the cable entry insert may comprise a respective locking groove and a respective locking device and the configuration, as seen in a direction parallel with the edge, of the locking groove and the locking device may be the same on at least two edges of the cable entry insert, preferably on all four edges.
  • an insert which may be connected with another, similar, insert at any position, thereby minimizing the time it takes for the user to connect the inserts.
  • the locking device may be integrated with the cable entry insert.
  • the locking device may according to one alternative embodiment be formed in one piece with the cable entry insert .
  • the cable entry insert may comprise sealing means for sealing between said cable entry insert and said second cable entry insert or a frame in which the insert is arranged.
  • the sealing means may form a part of a covering.
  • the sealing means provide a way of making the connection between the inserts to be, e.g. gas tight.
  • the cable entry insert may comprise a core and a covering.
  • the covering may extend outside the core, as seen in the plane of the insert.
  • the extension of the covering outside of the core may provide sealing means.
  • the core may be relatively rigid.
  • a rigid core renders the insert to be stable in order to provide proper strain relief of the inserted cables.
  • the covering may be of a rubber or rubber-like material.
  • a rubber or rubber-like material provides a way of constructing sealing means and also makes the inserts more durable and flexible and easy to handle.
  • the locking means may be formed in one piece with the core of the cable entry insert.
  • the cable entry insert may present at least one of a standardised hole for receiving a separate grommet or a separate cable gland, a grommet, a cabl gland, a knock-out cable entry hole, an integrated grommet and a strain relief.
  • This provides the user with multiple choices and a very flexible cable entry system.
  • the cable entry insert may be provided with sealing means for sealing between the insert and a cable entry insert frame.
  • the sealing means may either be a sealing lip or an extension of the covering in a plane parallel to the core.
  • the cable entry insert may be formed from at least two insert parts which are joinable along a joint which intersects a cable or pipe receiving recess of the insert .
  • a cable entry frame comprising a body having a rectangular cable entry insert reception space, characterised in that the lengths of each main side of said reception space are integer multiples of about 15-18 mm.
  • reception space is meant an opening in the frame, adapted for receiving cable entry inserts.
  • main side of the reception space is meant any one of the edges defining the reception space.
  • the frame may be selected to fit the present standard and any insert according to the present disclosure may be used therein.
  • the lengths of the main sides of the reception space may be integer multiples of about 16.5-17.5 mm or of about 16.6-17.2 mm. In one specific embodiment, the lengths of the main sides of the reception space may be integer multiples of about 17 mm.
  • the body of the frame may have any shape, e.g. circular, rectangular, oval, elliptic etc.
  • the cable entry frame may comprise locking means for mechanically locking together the frame with a cable entry insert when received in the frame.
  • the locking means may comprise a locking groove which is spaced from the reception space.
  • the locking groove may substantially enclose the reception space.
  • the locking groove may provide a way of securing inserts to the frame.
  • the frame may be provided with first sealing means for sealing between the frame and a panel on which the frame may be arranged.
  • Said first sealing means may comprise a sealing lip arranged substantially along the entire circumference of the frame.
  • the frame may further be provided with second sealing means for sealing between the frame and a panel on which the frame is arranged.
  • Said second sealing means may comprise a sealing lip arranged substantially along the entire circumference of the frame and within the first sealing means.
  • the first and second sealing means may comprise rubber or rubber- like material. This material may further improve the sealability of the sealing means.
  • the frame may even further be provided with third sealing means for sealing between the frame and at least one cable entry insert received in the reception space.
  • Said third sealing means may comprise a sealing lip extending from a surface of the frame, which faces a cable entry insert, and in the direction of said cable entry insert.
  • the third sealing means may extend substantially along an inner circumference of the reception space.
  • the third sealing means there is provided a way of ensuring that the connection between the frame and the inserts may be gas-tight.
  • the third sealing means may comprise rubber or rubber-like material.
  • the cable entry frame may comprise a core and a covering, which may be made of different materials.
  • the core may be relatively rigid.
  • the frame may be more resistant and may provide a secure support for the inserts.
  • the covering may be of a rubber or rubber-like material.
  • at least one of the first, second and third sealing means may be made in one piece with the covering.
  • the surfaces defining the reception space may be covered with a rubber or rubber-like material.
  • a rubber or rubber-like material By covering the reception space surfaces with a rubber or rubber-like material there may be provided a way of either securing inserts in the reception space and/or providing a seal between the frame and the inserts.
  • the frame may be adapted to fit a standard panel cut-out pattern. This means that the frame may be manufactured to fit any one of the conventional standard sizes, i.e. FL21 , FL13, KEL24 or KEL16, whilst the relative dimensions of the insert receiving space is constant throughout the different frames. This provides an extremely versatile system since the user only needs to select the proper frame size and then is able to use one and the same insert in all of these frame sizes.
  • the cable entry frame may be formed from at least two frame parts which are joinable along a joint which intersects the reception space. Thus, installation of cables having pre-installed connectors is enabled.
  • a cable entry system comprising a cable entry insert according to the first aspect of the present disclosure and a cable entry frame according to the second aspect.
  • sealing means for sealing between the insert and the frame may be arranged either on the insert or on the frame.
  • the sealing means for sealing between the insert and the frame may be arranged on both the insert and on the frame.
  • a cable entry installation comprising a cable entry system according to the third aspect and a panel.
  • the cable entry insert may be clamped between the frame and a panel.
  • a cable entry insert formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in a cable entry frame, wherein the body presents a front side and a rear side, and wherein the rear side is provided with locking means adapted for mechanically locking together said cable entry insert with a second, similar cable entry insert, or with a cable entry frame, when said cable entry insert and said second cable entry insert, or cable entry frame, are arranged adjacent each other and in a common plane.
  • a cable entry frame comprising a rectangular body having a cable entry insert reception space, wherein the cable entry has locking means for mechanically locking together the frame with a cable entry insert received in the frame.
  • a cable entry installation comprising: a cable entry frame, comprising a rectangular body having a cable entry insert reception space, a cable entry insert, formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in the cable entry frame, and panel having a cable entry cut-out, wherein the cable entry insert is clamped between the frame and the panel.
  • a method for installing a cable entry system comprising, providing at least one cable entry insert as set forth above, providing a cable entry frame as set forth above, and arranging the cable entry insert in the reception space of the cable entry frame.
  • the method may further comprise arranging the frame in the panel, such that the cable entry insert is clamped between the frame and the panel.
  • attaching the frame to a panel is the only measure that the user needs to take in order to ensure that the cable entry system is securely fastened and e.g. gas-tight.
  • the method may according to one embodiment further comprise providing at least two cable entry inserts. Since the insert is easily fitted into any frame and the user only needs to select the appropriate frame the method provides an easy and feasible way of putting together an cable entry system.
  • the method may comprise interconnecting the at least two cable entry inserts prior to arranging them in the frame.
  • Fig. 1 is a schematic top view of a cable entry system according to the present disclosure.
  • Figs 2a and 2b. are respective schematic cross sectional views along the line A-A of a cable entry system according to Fig. 1.
  • Fig. 3 is a schematic cross sectional view along the line B-B of a cable entry system according to Fig. 1.
  • Figs 4a-b are schematic side views of seals according to the present disclosure.
  • Fig. 5 is a schematic rear view of a cable entry insert.
  • Fig. 6 is a schematic cross sectional side view of a cable entry insert.
  • Fig. 7 is a schematic perspective rear view of a cable entry insert.
  • Fig. 8 is a schematic front view of a cable entry insert.
  • Fig. 9 is a schematic perspective front view of a cable entry insert.
  • Figs 10a-b are schematic perspective views of cable entry system and a cable entry system installation according to the present disclosure.
  • Fig. 11 a is schematic top views of different standard panel cut-outs.
  • Fig. 11 b is schematic top views of different combinations of cable entry systems according to the present solution.
  • Figs 12a-12b are schematic perspective views of another embodiment of a cable entry insert.
  • insert refers to "cable entry insert".
  • frame refers to "cable entry frame”.
  • Fig. 1 illustrates an assembled and installed cable entry system 30 according to the present disclosure.
  • three cable entry inserts 1 have been inserted in a cable entry frame 2.
  • the frame 2 has been arranged on a panel 20, which is provided with a cut-out for receiving a cable entry device.
  • Fig. 2a illustrates a cross section along line A-A of Fig. 1 and Fig. 3 illustrates a cross section along line B-B of Fig. 1.
  • Fig. 2b provides an enlarged view of a portion of the cross section of Fig. 2a.
  • the figures illustrate one embodiment of the present solution, where these inserts 1 have been arranged in a frame 2.
  • Figs 5-9 illustrate an embodiment of a cable entry insert 1 ("insert").
  • the insert has a rectangular body, with a front side 3 and a rear side 4, where the main side lengths L1 , L2 are integer multiples of about 17 mm.
  • the body has a planar shape, i.e. a plate-like shape.
  • the insert 1 body may be square, or have side lengths which are uneven multiples of 17 mm, i.e. have side lengths L1 , L2 of 17x17 mm, 34x34 mm, 68x68 mm or 17x34 mm, 17x68 mm, 34x68 mm etc.
  • the lengths L1 , L2 may differ from the integer multiple of 17 mm by between about - 0.1 mm to about + 0.1 mm, or between about - 0.05 mm to about + 0.05 mm.
  • the mechanical connectors may comprise a locking groove 5 or ridge (subsequently only referred to as a "groove") and a protruding part 6, which is engageable with the locking groove 5 or ridge of another insert 1.
  • the protruding part 6 may also be engagable with a locking groove 8 or ridge of the frame 2.
  • the mechanical connectors may be arranged in a similar manner at all four sides of the insert 1.
  • the protruding part 6 may also, or as an alternative, protrude in a direction normal to the main plane of the insert 1 , to such an extent that it will contact a panel 20 when the insert, mounted in a frame 2, is arranged on the panel. Hence, the protruding part may operate so as to activate e.g. a seal 11 between the panel 2 and the insert 1.
  • the mechanical connectors may be arranged to provide complete (two-way) mechanical locking in a first direction, which is parallel with the main plane of the insert and perpendicular to the edge associated with the respective mechanical connector.
  • the mechanical connectors may also be arranged to provide partial (one-way) locking in a direction perpendicular to the main plane of the insert.
  • the mechanical connectors may also be arranged to provide complete (two-way) or partial (one-way) locking in a direction parallel to the edge associated with the respective mechanical connector.
  • the locking groove 5 may extend in parallel to and over at least a part of the entire length of the first edge 12a.
  • the locking groove 5 may also be spaced apart from said first edge 12a, as seen in a direction perpendicular to the edge 12 and parallel with the main plane of the cable entry insert 1.
  • the locking device 6 formed as a protruding part, may be arranged in parallel to the groove 8 and in the proximity of the groove 8, and extend outside of a second edge 12b, which second edge 12b is perpendicular to the first edge 12a.
  • the protruding locking device 6 may extend outside of the second edge 12b such as to be engageable with a locking groove 5 of a second insert 1 or with a locking groove 8 of a frame.
  • the locking device 6 may be formed to extend behind the second insert, whereby a ridge or groove on the locking device may engage the groove or ridge, respectively of the edge of the second insert.
  • the locking device 6 may be formed as a protruding strip, extending along a part of its associated edge.
  • the locking device 6 may be formed as a hook which may be fitted in a groove 5 or 8.
  • the outermost part of the hook may even be formed as to fit exactly into corresponding design of a groove 5, e.g. by having a shape which is complementary to that of the groove.
  • This arrangement may be repeated at all four edges 12 of the insert 1 or at least at two edges 12 of the insert 1.
  • an insert 1 may be connected with a second insert 1 of the same size at any edge, i.e. a 17x17 mm insert 1 may be connected at any edge with a second 17x17 mm insert and also with a third 17x17 mm insert.
  • a 17x17 mm insert 1 may be connected at any edge with a second 17x17 mm insert and also with a third 17x17 mm insert.
  • a first insert of 17x34 mm is to be connected with a second insert of e.g. 34x34 mm, preferably only the 34 mm side of the first insert 1 is connected to any side of the second insert 1 etc.
  • the insert 1 may be formed as a two-component molded detail, and may thus have a core 14 of a rigid material (e.g. HDPE) and a covering 13 formed of a rubber or rubber-like material.
  • the rubber or rubber-like material may e.g. be any one of TPE (thermoplastic elastomer), TPU (thermoplastic urethane elastomer), EPDM (ethylene propylene diene monomer), polyamide and chloroprene.
  • TPE thermoplastic elastomer
  • TPU thermoplastic urethane elastomer
  • EPDM ethylene propylene diene monomer
  • polyamide chloroprene
  • the covering 13 may extend outside the edge of the core 14 of the insert 1 in a plane parallel with the main plane of the insert 1.
  • the part of the covering 13 which extends outside of the core 14 may operate as a compressible sealing lip and enable sealing between the inserts 1.
  • the part of the covering 13 extending outside of the core 14, may also enable sealing between a frame 2 and the insert 1.
  • the core 14 may be integrated with the locking device 6 or the locking device may be formed in one piece with the core 14.
  • the insert 1 is only provided with grooves or ridges 5 intended for receiving locking devices (not shown) in the form of separate components.
  • the two or more inserts 1 may then be interconnected by, e.g. a generally U-shaped hook, which may join two adjacent inserts 1 together.
  • the insert 1 may not comprise any locking groove 5 or locking device 1 , and may hence simply be placed in a reception space 7 of a frame 2, without any interconnection or locking to another insert 1 and/or frame 2.
  • the insert may be provided with, e.g. predefined knock-out cable entry holes, an integrated grommet 40 (as illustrated in the figures), standardised holes for receiving grommets or cable glands, a strain relief or any other device for cable or pipe entry known by a person skilled in the art.
  • the insert 1 may also simply be intended for drilling a hole through the insert 1.
  • the insert may be a blind/dummy insert formed as a single component or two-component (core+covering) insert.
  • the insert may comprise a rigid knock-out portion.
  • the insert may comprise a knockout membrane, which may be formed of a rubber or rubber-like material.
  • the membrane may either be designed to be completely knocked out, leaving a relatively large hole in the insert, or it may be designed such that only a part of it is knocked out, thereby leaving a flexible membrane portion around the hole.
  • the grommet or knock-out hole may be formed in one piece with the covering 13.
  • Each insert 1 , 1' may be provided with one or more of the above cable entry arrangements. Combinations of two or more types are also possible.
  • the cable entry insert may also be provided with a seal (not shown) arranged to seal against edges of a reception space 7 of a cable entry frame 2.
  • the seal may further be formed in one piece with the covering 13 and may be of the rubber or rubber-like materials mentioned above.
  • Figs 2 and 3 illustrate one embodiment of the cable entry frame 2 ("frame").
  • the frame 2 has a substantially rectangular body, which is substantially planar, and a reception space 7, for receiving one or more cable entry inserts 1.
  • the reception space 7 has a side length R1 and a side width R2, essentially defining the reception space 7.
  • the frame 2 may also be formed as a two-component molded detail.
  • the frame 2 may thus have a core 15 and a covering 16.
  • the core 15 may be of a rigid material and the core 16 may be formed from a rubber or rubber-like material, such as the materials mentioned above.
  • the reception space 7 may have side lengths R1 , R2 that are integer multiples of about 17 mm.
  • the reception space 7 of the frame 2 may be provided with other side lengths R1 , R2 than integer multiples of 17 mm.
  • the reception space 7 of the cable entry frames 2 of the present disclosure may be provided with any side length R1 , R2. Due to manufacturing tolerances the lengths R1 , R2 may differ from the integer multiple of 17 mm by between about - 0.1 mm to about + 0.1 mm, or preferably between about - 0.05 mm to about + 0.05 mm.
  • the reception space 7 may be at least partially surrounded by a locking groove 8.
  • the locking groove 8 may be spaced from the edges of the reception space 7, and may extend essentially along the entire circumference of the reception space 7.
  • the locking groove 8 may extend partially along the circumference of the reception space 7, e.g. such as to correspond substantially to the positions of locking devices 6 of the inserts 1.
  • the distance between the reception space 7 edge and the locking groove 8 may thus be adapted to fit with a locking device 6 of an insert 1.
  • a hook-like projection 17 of a locking device 6 of an insert 1 may engage the locking groove 8.
  • the frame 2 may also have a first seal 9 (Fig. 4a), which may be arranged substantially along the circumference of the entire frame 2.
  • the first seal 9 may comprise a sealing lip, arranged such that it, in an installed state, may extend towards and sealingly contact the surface of a panel 20.
  • the frame 2 may further have second seal 10 ( Fig.
  • the second seal 10 may be arranged similarly to the first sealing means 9, i.e. it may extend towards and sealingly contact the surface of a panel 20.
  • a third seal 11 may be arranged in the reception space 7, in order to provide sealing, and optionally pretension, against the inserts when received in the reception space.
  • the third seal 11 may substantially enclose the reception space 7.
  • the third seal 11 may comprise a sealing lip, which may be arrangedsuch that it, in an installed state, extends towards and sealingly contacts a front side 3 of an insert 1.
  • the third seal 11 may be formed in one piece with a covering 16 of the frame 2.
  • the first, second and third seals (9, 10, 11) may be formed in one piece with the covering 16.
  • the seals (9, 10, 11) may thus be integrated with the core 15 and may be formed of a rubber or rubber-like material, such as the materials mentioned above.
  • the reception space may be substantially lined with the covering of the frame, as illustrated in Fig. 2b.
  • a sealing material 18a such as a rubber or rubber- like material, additional sealing between the frame and the insert may be provided.
  • the reception space may be lined on surfaces facing side edges of the insert 1.
  • the reception space may be lined with a sealing material 18b, such as a rubber or rubber-like material, on surfaces facing the front side 3 or rear side 4 of the insert 1.
  • the third seal 11 may be a separate sealing part which may be arranged in the reception space 7. In another embodiment, the third seal 11 may be a sealing compound, which may seal between the reception space 7 and an insert 1.
  • first seal 9 may be a sealing compound, which may be applied to seal against the panel 20.
  • second seal 10 may be a sealing compound.
  • the frame 2 may be designed to fit with a conventional standard panel cut-out as illustrated in Figs 11a illustrating, from top to bottom, a FL21 standard, a FL13 standard, a KEL24 standard and a KEL16 standard.
  • the reception space 7 may, however, have the same dimensions, i.e. side lengths which are integer multiples of about 17 mm, regardless of the panel cut-out dimensions.
  • a cable entry system 30 comprises a frame 2 and at least one insert 1 as can be seen in Fig. 11b and Figs 1-2b.
  • the entry systems 30a, 30b, 30c, 3Od shown in Fig. 11b correspond to the different standard cut-out patterns 29a, 29b, 29c, 29d illustrated inFig. 11a.
  • combination possibilities for the cable entry system 30 are outlined in Tables 1-4 below.
  • the different example combination possibilities A-F can be read from the tables, where an empty square means that the combination is not possible or not desirable.
  • the combination E shows that one insert 1 having a size of 34x34 mm may be used together with four inserts 1 having a size of 34x17 mm in a frame adapted to fit in an FL13 standard cut-out panel.
  • combination C shows that five inserts having a size of 68x34 mm can be used together a frame adapted to fit in an FL21 standard cut-out panel.
  • a cable entry system 30 may be arranged in a panel 20 to form a cable entry installation 25.
  • the insert 1 may then be clamped between the frame 2 and the panel 20.
  • the seals 9 and 10 may be pressed against the panel 20 to create a gas- water-, and/or dust-tight sealing.
  • the seal 11 may be pressed against the insert 1 to create, e.g. a gas-, water-, and/or dust-tight seal between the frame 2 and the insert 1.
  • both the first and second seals 9, 10 and the third seal 11 may provide pretensioning between the panel 20 and the frame 2.
  • a cable entry installation 25 according to the above combinations (see e.g. tables 1-4) may be arranged as is illustrated in Figs 10a-IOf.
  • the appropriate frame 1 may be selected to fit with the desired panel 20 cut-out, i.e. any one of the standards mentioned above, and one or more inserts 1 of optional appearance, i.e. with knock out cable entry holes, an integrated grommet, standardised holes for receiving grommets or cable glands or a strain relief, etc..
  • two or more inserts 1 may be connected to each other.
  • the interconnected inserts 1 may then be arranged in the reception space 7 of the frame 2 (Fig. 10d) to form a cable entry system 30.
  • the one or more inserts 1 may, according to one alternative, be arranged separately in the reception space 7, without prior interconnection.
  • the system 30 may then be arranged on a panel 20 (Fig. 10e), and may then be fastened with screws or any other appropriate means for attachment (Fig. 10 T), which is readily conceived by a person skilled in the arts.
  • the attachment of the frame 2 to the panel 20 may provide a compression/pretension in a direction normal to the panel, whereby the seals 9, 10 between the frame and the panel and the seal 11 between the insert and the panel are activated.
  • the cable entry insert may be provided with other side lengths L1 , L2 than integer multiples of 17 mm.
  • an integer multiple of 17 mm is preferred for providing a cable entry insert 1 which may fit with multiple standard cable entry frames, the cable entry inserts 1 of the present disclosure may actually be provided with any desired side length.
  • the inserts 1 may be formed as a single component body of e.g. a relatively rigid material, such as a polymer material. Such inserts 1 may be combined with two-component inserts and/or with two component frames.
  • the frame 2 may be formed as a single component body of e.g. a relatively rigid material, such as a polymer material. Such frames 2 may be combined with two-component inserts and/or single component inserts.
  • seals 9, 10 and 11 are provided as a protrusion of the core material or of a rigid polymer mateiral, which is flexible enough to provide a sealing effect when contacted against an insert, frame and/or a panel.
  • the insert may be formed from a pair of insert parts 1a, 1b, which may be joined along a joint which intersects a through hole of the insert, so as to form the insert.
  • the frame from a pair of frame parts, which may be joined along a joint which intersects the reception space, so as to form the frame, such that it may be installed after a cable has been arranged in a panel cut-out.

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Abstract

A cable entry insert (1 ) is formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in a cable entry frame (2). The lengths of main sides (L1, L2) of the body are integer multiples of about 15-18 mm.

Description

CABLE ENTRY DEVICE
Technical Field
The present document relates to an entry system for cables and pipes.
More particularly, the present disclosure relates to a cable entry insert and a cable entry frame according to the appended independent claims.
Background
There are a number of different standards for cable entries in panels, cabinets, walls etc. Examples of such standards include FL 21 , FL 13, KEL
24 and KEL 16. Each such standard provides a pattern according to which attachment holes and cable entry openings are to be designed.
When drawing cables through a cable entry, it is generally desirable to protect the cable casings from damage, to provide a certain tightness in respect of e.g. dust, water or gas, a certain degree of fire proofing, and, in some cases, also strain relief for the cables. Oy Mar-Con Polymers Ltd (Fl) markets multigate grommets, which are special products for electric applications. A multigate grommet is an IP gasket combined with a cable gland plate with several pre-prepared cable grommets.
Several cables or pipes can be lead into a cabinet through a small area. The multigate grommet is adapted to fit a standard panel cutout pattern, such as e.g. according to the FL 13 or FL 21 standard. The multigate grommets are inflexible, in that each multigate grommet has a predetermined hole setup.
Hence, a large variety of different multigate grommets will need to be manufactured in order to meet a corresponding variety of cable entry needs.
Furthermore, some such multigate grommets present one or more knock-out entry holes or otherwise openable holes, which cannot be closed if a different cable is to be used.
DE10225046A1 discloses a flexible cable entry system, comprising a snap frame that is adapted to fit a standard panel cut-out pattern, such as e.g. according to the KEL 16 or KEL 24 standard. The snap frame is adapted to receive a cable inlet frame, which in turn is adapted to receive a plurality of grommets. The grommets are arranged in a first half of the cable inlet frame, after which a second part of the cable inlet frame is assembled with the first half, so as to clamp the grommets between the first and second parts. Subsequently, the cable inlet frame is snap-fitted into the snap frame. The cable entry system comprises many components and is bulky, in particular as seen in a direction normal to the plane of the panel in which the snap frame is fitted.
Another system of entry plates is marketed by Roxtec International AB, which is based on the system disclosed in WO2004112211. This system is bulky, in particular as seen in a direction normal to the plane of the panel in which the snap frame is fitted.
Hence, there is a need for an improved or alternative cable entry system.
Summary
It is an object of the present disclosure, to provide an improved cable entry system and components thereof, which eliminate or alleviate at least some of the disadvantages of the prior art cable entry systems and components. The invention is based on the discovery that many cable entry systems appear to have a common denominator in the integer multiple of about 17 mm.
More specific objects include providing a new and inventive cable entry insert and cable entry frame, which together makes up a cable entry system. The invention is defined by the appended independent claims.
Embodiments are set forth in the appended dependent claims and in the following description and drawings.
According to a first aspect, there is a cable entry insert, formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in a cable entry frame characterised in that the lengths of main sides of the body are integer multiples of about 15-18mm. In a particular embodiment, the main sides of the body are an integer multiple of about 17 mm.
By "main sides" is meant the sides that defines the rectangular body. By "about" about 15-18 mm is meant that the main side lengths are essentially integer multiples of said values, but may, with due consideration to manufacturing tolerances, also vary in a range from about -0.1 mm to about +0.1 mm, or preferably from about -0.05 mm to about +0.05 mm. By forming the cable entry insert as a rectangle with sides that are multiples of about 15-18 mm, there is provided an insert which may be used in at least the conventional standard systems for cable entries, FL 21 , FL 13, KEL 24 and KEL 16.
In a particular embodiment, the lengths of the main sides of the body may be integer multiples of about 16.5-17.5 mm or about 16.6-17.2 mm. In one specific embodiment, the lengths of the main sides of the body may be integer multiples of about 17 mm.
The body may present a front side and a rear side, and the rear side may be provided with locking means adapted for mechanically locking together said cable entry insert with a second, similar cable entry insert , when said cable entry insert and said second cable entry insert are arranged adjacent each other and in a common plane.
By the locking means there is provided a way of interconnecting one or more inserts, thereby giving the user a large variety of combination possibilities, with regards to different types of inserts for different types and sizes of cables.
The locking means may comprise a locking groove or locking ridge, arranged on the rear side of the cable entry insert, and locking device, arranged to engage the locking groove or locking ridge of a second similar cable entry insert.
A locking groove or ridge, which may receive and engage a protruding locking device, facilitates an easy and fast way of connecting one or more inserts.
The locking device may be arranged to protrude from a portion of the edge of the cable entry insert.
The protruding portion enables a simple interconnection of the inserts. The locking groove or ridge may extend in parallel with an edge of the cable entry insert and it may extend along only a portion of the edge of the cable entry insert.
The partial extension of the locking groove provides a stop function, i.e. when the inserts have been connected to each other they are prevented from slipping, and are thereby easy to position correctly relative to each other.
The edge of the cable entry insert may comprise a respective locking groove and a respective locking device and the configuration, as seen in a direction parallel with the edge, of the locking groove and the locking device may be the same on at least two edges of the cable entry insert, preferably on all four edges.
By this configuration there is provided an insert, which may be connected with another, similar, insert at any position, thereby minimizing the time it takes for the user to connect the inserts. The locking device may be integrated with the cable entry insert.
When the locking device is integrated with the insert there is provided a safe and easy way of connecting the inserts, since the locking device is attached already attached to the insert plate.
The locking device may according to one alternative embodiment be formed in one piece with the cable entry insert .
By forming the locking device in one piece there is further provided a fast and simple way of producing the inserts with locking devices protruding from the edges and since the locking devices are present at the inserts at all times there is also provided a safe and easy way of connecting the inserts. The cable entry insert may comprise sealing means for sealing between said cable entry insert and said second cable entry insert or a frame in which the insert is arranged. The sealing means may form a part of a covering.
The sealing means provide a way of making the connection between the inserts to be, e.g. gas tight.
The cable entry insert may comprise a core and a covering. The covering may extend outside the core, as seen in the plane of the insert. The extension of the covering outside of the core may provide sealing means.
The core may be relatively rigid. A rigid core renders the insert to be stable in order to provide proper strain relief of the inserted cables. The covering may be of a rubber or rubber-like material. A rubber or rubber-like material provides a way of constructing sealing means and also makes the inserts more durable and flexible and easy to handle.
The locking means may be formed in one piece with the core of the cable entry insert. By forming the locking device as one piece with the core there is provided a feasible way of manufacturing the inserts and also stabile inserts and locking devices.
The cable entry insert may present at least one of a standardised hole for receiving a separate grommet or a separate cable gland, a grommet, a cabl gland, a knock-out cable entry hole, an integrated grommet and a strain relief.
This provides the user with multiple choices and a very flexible cable entry system.
The cable entry insert may be provided with sealing means for sealing between the insert and a cable entry insert frame. The sealing means may either be a sealing lip or an extension of the covering in a plane parallel to the core.
The cable entry insert may be formed from at least two insert parts which are joinable along a joint which intersects a cable or pipe receiving recess of the insert . Thus, installation of cables having pre-installed connectors is enabled.
According to a second aspect of the present solution there is provided a cable entry frame, comprising a body having a rectangular cable entry insert reception space, characterised in that the lengths of each main side of said reception space are integer multiples of about 15-18 mm. By "reception space" is meant an opening in the frame, adapted for receiving cable entry inserts.
By "main side" of the reception space is meant any one of the edges defining the reception space. By having a frame, which may receive inserts with a standardised size and shape, the necessity for the user to have different types of inserts is diminished. The frame may be selected to fit the present standard and any insert according to the present disclosure may be used therein. In one embodiment, the lengths of the main sides of the reception space may be integer multiples of about 16.5-17.5 mm or of about 16.6-17.2 mm. In one specific embodiment, the lengths of the main sides of the reception space may be integer multiples of about 17 mm.
The body of the frame may have any shape, e.g. circular, rectangular, oval, elliptic etc.
The cable entry frame may comprise locking means for mechanically locking together the frame with a cable entry insert when received in the frame. The locking means may comprise a locking groove which is spaced from the reception space. The locking groove may substantially enclose the reception space. The locking groove may provide a way of securing inserts to the frame.
The frame may be provided with first sealing means for sealing between the frame and a panel on which the frame may be arranged. Said first sealing means may comprise a sealing lip arranged substantially along the entire circumference of the frame.
The frame may further be provided with second sealing means for sealing between the frame and a panel on which the frame is arranged. Said second sealing means may comprise a sealing lip arranged substantially along the entire circumference of the frame and within the first sealing means. By first and second sealing means there is provided a way of ensuring that the connection between the frame and a panel may be gas-tight.
The first and second sealing means may comprise rubber or rubber- like material. This material may further improve the sealability of the sealing means. The frame may even further be provided with third sealing means for sealing between the frame and at least one cable entry insert received in the reception space. Said third sealing means may comprise a sealing lip extending from a surface of the frame, which faces a cable entry insert, and in the direction of said cable entry insert. The third sealing means may extend substantially along an inner circumference of the reception space.
By the third sealing means there is provided a way of ensuring that the connection between the frame and the inserts may be gas-tight. The third sealing means may comprise rubber or rubber-like material.
According to one embodiment of the second aspect of the present disclosure the cable entry frame may comprise a core and a covering, which may be made of different materials.
According to one alternative the core may be relatively rigid. By having a rigid core the frame may be more resistant and may provide a secure support for the inserts.
The covering may be of a rubber or rubber-like material. According to one embodiment at least one of the first, second and third sealing means may be made in one piece with the covering. By making the sealing means in one piece with the covering there is provided an easy way of manufacturing the cable entry frame with the sealing means.
According to one alternative the surfaces defining the reception space may be covered with a rubber or rubber-like material. By covering the reception space surfaces with a rubber or rubber-like material there may be provided a way of either securing inserts in the reception space and/or providing a seal between the frame and the inserts.
The frame may be adapted to fit a standard panel cut-out pattern. This means that the frame may be manufactured to fit any one of the conventional standard sizes, i.e. FL21 , FL13, KEL24 or KEL16, whilst the relative dimensions of the insert receiving space is constant throughout the different frames. This provides an extremely versatile system since the user only needs to select the proper frame size and then is able to use one and the same insert in all of these frame sizes. The cable entry frame may be formed from at least two frame parts which are joinable along a joint which intersects the reception space. Thus, installation of cables having pre-installed connectors is enabled.
According to a third aspect there is provided a cable entry system comprising a cable entry insert according to the first aspect of the present disclosure and a cable entry frame according to the second aspect.
According to one alternative embodiment of the third aspect sealing means for sealing between the insert and the frame may be arranged either on the insert or on the frame. The sealing means for sealing between the insert and the frame may be arranged on both the insert and on the frame.
According to a fourth aspect there is provided a cable entry installation comprising a cable entry system according to the third aspect and a panel. According to one embodiment of the fourth aspect, the cable entry insert may be clamped between the frame and a panel.
By clamping the insert between the frame and the panel, on which the frame is arranged, there is provided a way of ensuring that the system really fits with the panel and that the inserts are secured to the frame.
According to a fifth aspect, there is provided a cable entry insert, formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in a cable entry frame, wherein the body presents a front side and a rear side, and wherein the rear side is provided with locking means adapted for mechanically locking together said cable entry insert with a second, similar cable entry insert, or with a cable entry frame, when said cable entry insert and said second cable entry insert, or cable entry frame, are arranged adjacent each other and in a common plane.
According to a sixth aspect, there is provided a cable entry frame, comprising a rectangular body having a cable entry insert reception space, wherein the cable entry has locking means for mechanically locking together the frame with a cable entry insert received in the frame.
According to a seventh aspect, there is provided a cable entry installation, comprising: a cable entry frame, comprising a rectangular body having a cable entry insert reception space, a cable entry insert, formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in the cable entry frame, and panel having a cable entry cut-out, wherein the cable entry insert is clamped between the frame and the panel.
According to a eighth aspect, there is provided a method for installing a cable entry system, comprising, providing at least one cable entry insert as set forth above, providing a cable entry frame as set forth above, and arranging the cable entry insert in the reception space of the cable entry frame. The method may further comprise arranging the frame in the panel, such that the cable entry insert is clamped between the frame and the panel. Thus, attaching the frame to a panel is the only measure that the user needs to take in order to ensure that the cable entry system is securely fastened and e.g. gas-tight. The method may according to one embodiment further comprise providing at least two cable entry inserts. Since the insert is easily fitted into any frame and the user only needs to select the appropriate frame the method provides an easy and feasible way of putting together an cable entry system. The method may comprise interconnecting the at least two cable entry inserts prior to arranging them in the frame.
By the possibility for combining different sizes of or same-sized inserts there is provided an even more feasible system for cable entries.
Brief Description of the Drawings
Embodiments of the present solution will now be described, by way of example, with reference to the accompanying schematic drawings.
Fig. 1 is a schematic top view of a cable entry system according to the present disclosure. Figs 2a and 2b. are respective schematic cross sectional views along the line A-A of a cable entry system according to Fig. 1.
Fig. 3 is a schematic cross sectional view along the line B-B of a cable entry system according to Fig. 1.
Figs 4a-b are schematic side views of seals according to the present disclosure.
Fig. 5 is a schematic rear view of a cable entry insert.
Fig. 6 is a schematic cross sectional side view of a cable entry insert.
Fig. 7 is a schematic perspective rear view of a cable entry insert. Fig. 8 is a schematic front view of a cable entry insert.
Fig. 9 is a schematic perspective front view of a cable entry insert.
Figs 10a-b are schematic perspective views of cable entry system and a cable entry system installation according to the present disclosure. Fig. 11 a is schematic top views of different standard panel cut-outs.
Fig. 11 b is schematic top views of different combinations of cable entry systems according to the present solution.
Figs 12a-12b are schematic perspective views of another embodiment of a cable entry insert.
Description of Embodiments
In the following description the term "insert" refers to "cable entry insert". The term "frame" refers to "cable entry frame".
Fig. 1 illustrates an assembled and installed cable entry system 30 according to the present disclosure. In the illustrated embodiment, three cable entry inserts 1 have been inserted in a cable entry frame 2. The frame 2 has been arranged on a panel 20, which is provided with a cut-out for receiving a cable entry device.
Fig. 2a illustrates a cross section along line A-A of Fig. 1 and Fig. 3 illustrates a cross section along line B-B of Fig. 1. Fig. 2b provides an enlarged view of a portion of the cross section of Fig. 2a. The figures illustrate one embodiment of the present solution, where these inserts 1 have been arranged in a frame 2.
Figs 5-9 illustrate an embodiment of a cable entry insert 1 ("insert"). The insert has a rectangular body, with a front side 3 and a rear side 4, where the main side lengths L1 , L2 are integer multiples of about 17 mm. The body has a planar shape, i.e. a plate-like shape.
The insert 1 body may be square, or have side lengths which are uneven multiples of 17 mm, i.e. have side lengths L1 , L2 of 17x17 mm, 34x34 mm, 68x68 mm or 17x34 mm, 17x68 mm, 34x68 mm etc.
Due to manufacturing tolerances the lengths L1 , L2 may differ from the integer multiple of 17 mm by between about - 0.1 mm to about + 0.1 mm, or between about - 0.05 mm to about + 0.05 mm. At the rear side 4 of the insert 1 , mechanical connectors for interconnecting one insert 1 with at least one other insert or with a frame 2 may be provided. The mechanical connectors may comprise a locking groove 5 or ridge (subsequently only referred to as a "groove") and a protruding part 6, which is engageable with the locking groove 5 or ridge of another insert 1. The protruding part 6 may also be engagable with a locking groove 8 or ridge of the frame 2. The mechanical connectors may be arranged in a similar manner at all four sides of the insert 1.
The protruding part 6 may also, or as an alternative, protrude in a direction normal to the main plane of the insert 1 , to such an extent that it will contact a panel 20 when the insert, mounted in a frame 2, is arranged on the panel. Hence, the protruding part may operate so as to activate e.g. a seal 11 between the panel 2 and the insert 1.
By "similar manner" is meant, in one embodiment, that one locking groove 5 is placed adjacent to one locking device 6 at the same edge 12 of the insert 1.
In particular, the mechanical connectors may be arranged to provide complete (two-way) mechanical locking in a first direction, which is parallel with the main plane of the insert and perpendicular to the edge associated with the respective mechanical connector.
The mechanical connectors may also be arranged to provide partial (one-way) locking in a direction perpendicular to the main plane of the insert.
The mechanical connectors may also be arranged to provide complete (two-way) or partial (one-way) locking in a direction parallel to the edge associated with the respective mechanical connector.
As can be seen in a perspective view, e.g. in Fig. 7, the locking groove 5 may extend in parallel to and over at least a part of the entire length of the first edge 12a. The locking groove 5 may also be spaced apart from said first edge 12a, as seen in a direction perpendicular to the edge 12 and parallel with the main plane of the cable entry insert 1.
The locking device 6, formed as a protruding part, may be arranged in parallel to the groove 8 and in the proximity of the groove 8, and extend outside of a second edge 12b, which second edge 12b is perpendicular to the first edge 12a. The protruding locking device 6 may extend outside of the second edge 12b such as to be engageable with a locking groove 5 of a second insert 1 or with a locking groove 8 of a frame. Thus, the locking device 6 may be formed to extend behind the second insert, whereby a ridge or groove on the locking device may engage the groove or ridge, respectively of the edge of the second insert. The locking device 6 may be formed as a protruding strip, extending along a part of its associated edge.
According to one embodiment, the locking device 6 may be formed as a hook which may be fitted in a groove 5 or 8. In an alternative embodiment, the outermost part of the hook may even be formed as to fit exactly into corresponding design of a groove 5, e.g. by having a shape which is complementary to that of the groove.This arrangement may be repeated at all four edges 12 of the insert 1 or at least at two edges 12 of the insert 1. Hence an insert 1 may be connected with a second insert 1 of the same size at any edge, i.e. a 17x17 mm insert 1 may be connected at any edge with a second 17x17 mm insert and also with a third 17x17 mm insert. According to one alternative embodiment if, e.g. a first insert of 17x34 mm, is to be connected with a second insert of e.g. 34x34 mm, preferably only the 34 mm side of the first insert 1 is connected to any side of the second insert 1 etc. The insert 1 may be formed as a two-component molded detail, and may thus have a core 14 of a rigid material (e.g. HDPE) and a covering 13 formed of a rubber or rubber-like material. The rubber or rubber-like material may e.g. be any one of TPE (thermoplastic elastomer), TPU (thermoplastic urethane elastomer), EPDM (ethylene propylene diene monomer), polyamide and chloroprene. Different materials, with desirable characteristics such as gas-sealing, liquid-sealing, flame and spark proofing, etc. which may be used for the core and covering, are known to a person skilled in the art.
The covering 13 may extend outside the edge of the core 14 of the insert 1 in a plane parallel with the main plane of the insert 1. When two or more inserts 1 are interconnected, the part of the covering 13 which extends outside of the core 14, may operate as a compressible sealing lip and enable sealing between the inserts 1. The part of the covering 13 extending outside of the core 14, may also enable sealing between a frame 2 and the insert 1. The core 14 may be integrated with the locking device 6 or the locking device may be formed in one piece with the core 14.
In an alternative embodiment, the insert 1 is only provided with grooves or ridges 5 intended for receiving locking devices (not shown) in the form of separate components. The two or more inserts 1 may then be interconnected by, e.g. a generally U-shaped hook, which may join two adjacent inserts 1 together.
In yet an alternative embodiment, the insert 1 may not comprise any locking groove 5 or locking device 1 , and may hence simply be placed in a reception space 7 of a frame 2, without any interconnection or locking to another insert 1 and/or frame 2.
The insert may be provided with, e.g. predefined knock-out cable entry holes, an integrated grommet 40 (as illustrated in the figures), standardised holes for receiving grommets or cable glands, a strain relief or any other device for cable or pipe entry known by a person skilled in the art. The insert 1 may also simply be intended for drilling a hole through the insert 1.
In one particular embodiment, the insert may be a blind/dummy insert formed as a single component or two-component (core+covering) insert.
In another particular embodiment, the insert may comprise a rigid knock-out portion.
In yet another particular embodiment, the insert may comprise a knockout membrane, which may be formed of a rubber or rubber-like material.
The membrane may either be designed to be completely knocked out, leaving a relatively large hole in the insert, or it may be designed such that only a part of it is knocked out, thereby leaving a flexible membrane portion around the hole.
The grommet or knock-out hole may be formed in one piece with the covering 13.
Each insert 1 , 1' may be provided with one or more of the above cable entry arrangements. Combinations of two or more types are also possible.
The cable entry insert may also be provided with a seal (not shown) arranged to seal against edges of a reception space 7 of a cable entry frame 2. The seal may further be formed in one piece with the covering 13 and may be of the rubber or rubber-like materials mentioned above.
Figs 2 and 3 illustrate one embodiment of the cable entry frame 2 ("frame"). The frame 2 has a substantially rectangular body, which is substantially planar, and a reception space 7, for receiving one or more cable entry inserts 1. The reception space 7 has a side length R1 and a side width R2, essentially defining the reception space 7.
The frame 2 may also be formed as a two-component molded detail. The frame 2 may thus have a core 15 and a covering 16. The core 15 may be of a rigid material and the core 16 may be formed from a rubber or rubber-like material, such as the materials mentioned above.
The reception space 7 may have side lengths R1 , R2 that are integer multiples of about 17 mm. In analogy with the insert 1 , the reception space 7 of the frame 2 may be provided with other side lengths R1 , R2 than integer multiples of 17 mm. Hence, while an integer multiple of 17 mm is a preferred embodiment the reception space 7 of the cable entry frames 2 of the present disclosure may be provided with any side length R1 , R2. Due to manufacturing tolerances the lengths R1 , R2 may differ from the integer multiple of 17 mm by between about - 0.1 mm to about + 0.1 mm, or preferably between about - 0.05 mm to about + 0.05 mm.
The reception space 7 may be at least partially surrounded by a locking groove 8. The locking groove 8 may be spaced from the edges of the reception space 7, and may extend essentially along the entire circumference of the reception space 7. In an alternative embodiment, the locking groove 8 may extend partially along the circumference of the reception space 7, e.g. such as to correspond substantially to the positions of locking devices 6 of the inserts 1. The distance between the reception space 7 edge and the locking groove 8 may thus be adapted to fit with a locking device 6 of an insert 1. According to one embodiment, a hook-like projection 17 of a locking device 6 of an insert 1 may engage the locking groove 8.
Surfaces defining the reception space 7 may be at least partially provided with the covering 16. The frame 2 may also have a first seal 9 (Fig. 4a), which may be arranged substantially along the circumference of the entire frame 2. The first seal 9 may comprise a sealing lip, arranged such that it, in an installed state, may extend towards and sealingly contact the surface of a panel 20. In one embodiment, the frame 2 may further have second seal 10 ( Fig.
4a), which may comprise an inner sealing lip. The second seal 10 may be arranged similarly to the first sealing means 9, i.e. it may extend towards and sealingly contact the surface of a panel 20.
A third seal 11 (Fig. 4b) may be arranged in the reception space 7, in order to provide sealing, and optionally pretension, against the inserts when received in the reception space. The third seal 11 may substantially enclose the reception space 7. The third seal 11 may comprise a sealing lip, which may be arrangedsuch that it, in an installed state, extends towards and sealingly contacts a front side 3 of an insert 1. According to an alternative embodiment, the third seal 11 may be formed in one piece with a covering 16 of the frame 2.
The first, second and third seals (9, 10, 11) may be formed in one piece with the covering 16.
The seals (9, 10, 11) may thus be integrated with the core 15 and may be formed of a rubber or rubber-like material, such as the materials mentioned above.
The reception space may be substantially lined with the covering of the frame, as illustrated in Fig. 2b. By having all, or substantial parts of the reception space lined with a sealing material 18a, such as a rubber or rubber- like material, additional sealing between the frame and the insert may be provided.
For example, the reception space may be lined on surfaces facing side edges of the insert 1. As an alternative, or complement, the reception space may be lined with a sealing material 18b, such as a rubber or rubber-like material, on surfaces facing the front side 3 or rear side 4 of the insert 1.
In one embodiment, the third seal 11 may be a separate sealing part which may be arranged in the reception space 7. In another embodiment, the third seal 11 may be a sealing compound, which may seal between the reception space 7 and an insert 1.
In an alternative embodiment, the first seal 9 may be a sealing compound, which may be applied to seal against the panel 20. According to an alternative also the second seal 10 may be a sealing compound.
The frame 2 may be designed to fit with a conventional standard panel cut-out as illustrated in Figs 11a illustrating, from top to bottom, a FL21 standard, a FL13 standard, a KEL24 standard and a KEL16 standard.
According to the present solution, the reception space 7 may, however, have the same dimensions, i.e. side lengths which are integer multiples of about 17 mm, regardless of the panel cut-out dimensions.
A cable entry system 30 comprises a frame 2 and at least one insert 1 as can be seen in Fig. 11b and Figs 1-2b. The entry systems 30a, 30b, 30c, 3Od shown in Fig. 11b correspond to the different standard cut-out patterns 29a, 29b, 29c, 29d illustrated inFig. 11a.
Examples of combination possibilities for the cable entry system 30 are outlined in Tables 1-4 below. The different example combination possibilities A-F can be read from the tables, where an empty square means that the combination is not possible or not desirable. For instance, in table 2, the combination E shows that one insert 1 having a size of 34x34 mm may be used together with four inserts 1 having a size of 34x17 mm in a frame adapted to fit in an FL13 standard cut-out panel. In table 1 , combination C shows that five inserts having a size of 68x34 mm can be used together a frame adapted to fit in an FL21 standard cut-out panel.
Table 1. Combinations for the FL21 standard cut-out panel
Table 2. Combinations for the FL13 standard cut-out panel
Table 3. Combinations for the KEL24 standard cut-out panel
Table 4. Combinations for the KEL16 standard cut-out panel
No. of inserts No. of inserts No. of inserts No. of inserts
Size of insert A B C D
68x34 mm 1
34x34 mm 2 1
34x17 mm 1 1 3 5
A cable entry system 30 may be arranged in a panel 20 to form a cable entry installation 25. The insert 1 may then be clamped between the frame 2 and the panel 20. The seals 9 and 10 may be pressed against the panel 20 to create a gas- water-, and/or dust-tight sealing. The seal 11 may be pressed against the insert 1 to create, e.g. a gas-, water-, and/or dust-tight seal between the frame 2 and the insert 1. Thus, both the first and second seals 9, 10 and the third seal 11 may provide pretensioning between the panel 20 and the frame 2. A cable entry installation 25 according to the above combinations (see e.g. tables 1-4) may be arranged as is illustrated in Figs 10a-IOf.
First, (Fig. 10a) the appropriate frame 1 may be selected to fit with the desired panel 20 cut-out, i.e. any one of the standards mentioned above, and one or more inserts 1 of optional appearance, i.e. with knock out cable entry holes, an integrated grommet, standardised holes for receiving grommets or cable glands or a strain relief, etc..
According to one embodiment (Figs 1Ob-IOc) two or more inserts 1 may be connected to each other. The interconnected inserts 1 may then be arranged in the reception space 7 of the frame 2 (Fig. 10d) to form a cable entry system 30.
The one or more inserts 1 may, according to one alternative, be arranged separately in the reception space 7, without prior interconnection. The system 30 may then be arranged on a panel 20 (Fig. 10e), and may then be fastened with screws or any other appropriate means for attachment (Fig. 10 T), which is readily conceived by a person skilled in the arts.
The attachment of the frame 2 to the panel 20 may provide a compression/pretension in a direction normal to the panel, whereby the seals 9, 10 between the frame and the panel and the seal 11 between the insert and the panel are activated.
In alternative embodiments, the cable entry insert may be provided with other side lengths L1 , L2 than integer multiples of 17 mm. Hence, while an integer multiple of 17 mm is preferred for providing a cable entry insert 1 which may fit with multiple standard cable entry frames, the cable entry inserts 1 of the present disclosure may actually be provided with any desired side length.
In one embodiment, the inserts 1 may be formed as a single component body of e.g. a relatively rigid material, such as a polymer material. Such inserts 1 may be combined with two-component inserts and/or with two component frames.
In yet another embodiment, the frame 2 may be formed as a single component body of e.g. a relatively rigid material, such as a polymer material. Such frames 2 may be combined with two-component inserts and/or single component inserts.
It is furthermore possible to provide the seals 9, 10 and 11 as a protrusion of the core material or of a rigid polymer mateiral, which is flexible enough to provide a sealing effect when contacted against an insert, frame and/or a panel.
In another embodiment, the insert may be formed from a pair of insert parts 1a, 1b, which may be joined along a joint which intersects a through hole of the insert, so as to form the insert. Using such an insert, it is possible to install cables or pipes having pre-installed connectors, since the cable or pipe can be arranged in the frame, after which the insert is formed around the cable or pipe and then connected to the frame.
It is also conceivable to form the frame from a pair of frame parts, which may be joined along a joint which intersects the reception space, so as to form the frame, such that it may be installed after a cable has been arranged in a panel cut-out.

Claims

1. A cable entry insert (1 , 1'), formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in a cable entry frame (2) c h a r a c t e r i s e d in that the lengths of main sides (L1 , L2) of the body are integer multiples of about 15-18 mm.
2. The cable entry insert (1 , 1 ') as claimed in claim 1 , wherein the lengths of the main sides (L1 , L2) of the body are integer multiples of about 16.5-17.5 mm, or about 16.6-17.2 mm.
3. The cable entry insert (1 , 1') as claimed in claim 1 or 2, wherein the bodypresents a front side (3) and a rear side (4), and wherein the rear side (4) is provided with locking means adapted for mechanically locking together said cable entry insert (1) with a second, similar cable entry insert (1), when said cable entry insert (1) and said second cable entry insert (1) are arranged adjacent each other and in a common plane.
4. The cable entry insert (1 , 1 ') as claimed in claim 3, wherein said locking means comprise: a locking groove (5) or locking ridge, arranged on the rear side (4) of the cable entry insert (1 , 1'); and a locking device (6), arranged to engage the locking groove (5) or locking ridge (5) of a second similar cable entry insert (1 ).
5. The cable entry insert (1 , 1') as claimed in claim 4, wherein the locking device (6) is arranged to protrude from a portion of the edge (12) of the cable entry insert (1).
6. The cable entry insert (1 , 1') as claimed in claim 4, wherein said locking groove or ridge (5) extends in parallel with an edge (12) of the cable entry insert (1).
7. The cable entry insert (1 , 1') as claimed in any one of claims 4-6, wherein the locking groove (5) extends along only a portion of the edge (12) of the cable entry insert (1 , 1').
8. The cable entry insert (1 , 1') as claimed in any one of claims 4-7, wherein each edge (12) of the cable entry insert (1) comprises a respective locking groove (5) and a respective locking device (6).
9. The cable entry insert (1 , 1 ') as claimed in any one of claims 4-8, wherein the configuration, as seen in a direction parallel with the edge (12), of the locking groove (5) and the locking device (6) is the same on at least two edges (12) of the cable entry insert (1 , 1'), preferably on all four edges (12).
10. The cable entry insert (1 , 1 ') as claimed in any one of claims 4-9, wherein the locking device (6) is integrated with the cable entry insert (1 , 1').
11. The cable entry insert (1 , 1 ') as claimed in any one of claims 4-10, wherein the locking device (6) is formed in one piece with the cable entry insert (1).
12. The cable entry insert (1 , 1') as claimed in any one of the preceding claims, wherein the cable entry insert (1 , 1 ') comprises sealing means for sealing between said cable entry insert (1 , 1') and said second cable entry insert (1 , 1 ') or a frame (2) in which the insert (1 , 1 ') is arranged.
13. The cable entry insert (1 , V) as claimed in claim 12, wherein the sealing means forms a part of a covering (13).
14. The cable entry insert (1 , V) as claimed in any one of the preceding claims, wherein the cable entry insert (1 , V) comprises a core (14) and a covering (13).
15. The cable entry insert (1 , 1') as claimed in claim 14, wherein the covering (13) extends outside the core (14), as seen in the plane of the insert
16. The cable entry insert (1 , 1') as claimed in claim 14, wherein the core (14) is relatively rigid.
17. The cable entry insert (1 , 1') as claimed in claim 14, wherein the covering (13) is of a rubber or rubber-like material.
18. The cable entry insert (1 , 1') as claimed in any one of claims 2-16, wherein the locking means is formed in one piece with the core (14) of the cable entry insert (1 , 1').
19. The cable entry insert (1 , 1 ') as claimed in any one of the preceding claims, wherein the cable entry insert (1 , 1') presents at least one of a standardised hole for receiving a separate grommet or a separate cable gland, a grommet, a cable gland, a knock-out cable entry hole, an integrated grommet and a strain relief.
20. The cable entry insert (1 , 1 ') as claimed in any one of the preceding claims, wherein the cable entry insert (1 , 1') is provided with sealing means for sealing between the insert (1 , 1') and a cable entry insert frame (2).
21. The cable entry insert (1 ') as claimed in any one of the preceding claims, wherein the cable entry insert is formed from at least two insert parts (1a, 1 b) which are joinable along a joint which intersects a cable or pipe receiving recess of the insert (1').
22. A cable entry frame (2), comprising a body having a rectangular cable entry insert reception space (7), c h a r a c t e r i s e d in that the lengths (R1 , R2) of each main side of said reception space (7) are integer multiples of about 15-18 mm.
23. The cable entry frame (2) as claimed in claim 22, wherein the lengths of the main sides (L1 , L2) of the body are integer multiples of about 16.5-17.5 mm, or about 16.6-17.2 mm.
24. The cable entry frame (2) as claimed in claim 22 or 23, wherein the cable entry frame (2) has locking means for mechanically locking together the frame (2) with a cable entry insert (1) when received in the frame (2).
25. The cable entry frame (2) as claimed in claim 24, wherein the locking means comprises a locking groove (8) spaced from the reception space (7).
26. The cable entry frame (2) as claimed in claim 25, wherein in the locking groove (8) substantially encloses the reception space (7).
27. The cable entry frame (2) as claimed in claims 22-26, wherein theframe (2) is provided with first sealing means (9) for sealing between the frame (2) and a panel (20) on which the frame (2) is arranged.
28. The cable entry frame (2) as claimed in claim 27, wherein said first sealing means (9) comprises a sealing lip arranged substantially along the entire circumference of the frame (2).
29. The cable entry frame (2) as claimed in claims 22-28, wherein the frame (2) is provided with second sealing means (10) for sealing between the frame (2) and a panel (20) on which the frame (2) is arranged.
30. The cable entry frame (2) as claimed in claim 29, wherein said second sealing (10) means comprises a sealing lip arranged substantially along the entire circumference of the frame (2) and within the first sealing means (9).
31. The cable entry frame (2) as claimed in any one of claims 26-30, wherein first (9) and second (10) sealing means comprises rubber or rubber-like material.
32. The cable entry frame (2) as claimed in any one of claims 221-31 , wherein the frame (2) is provided with a third sealing means (11) for sealing between the frame (2) and at least one cable entry insert (1 , 1') received in the reception space (7).
33. The cable entry frame (2) as claimed in claim 32, wherein said third sealing means (11) comprises a sealing lip extending from a surface of the frame, which faces a cable entry insert (1 , 1'), and in the direction of said cable entry insert (1 , 1').
34. The cable entry frame (2) as claimed in claim 33, wherein the third sealing means extend substantially along an inner circumference of the reception space (7).
35. The cable entry frame (2) as claimed in any one of claims 32-34, wherein third sealing means (11) comprises rubber or rubber-like material.
36. The cable entry frame (2) as claimed in any one of claims 22-35, wherein the cable entry frame (2) comprises a core (15) and a covering (16), which are made of different materials.
37. The cable entry frame (2) as claimed in claim 36, wherein the core (15) is relatively rigid.
38. The cable entry frame (2) as claimed in claim 36, wherein the covering (16) is of a rubber or rubber-like material.
39. The cable entry frame (2) as claimed in any one of claims 25-38, wherein at least one of the first, second and third sealing means (9, 10, 11) is made in one piece with the covering (16).
40. The cable entry frame (2) as claimed in any one of claims 22-39, wherein surfaces defining the reception space (7) are covered with a rubber or rubber-like material.
41. The cable entry frame (2) as claimed in any one of claims 22-40, wherein the frame (2) is adapted to fit a standard panel (20) cut-outcut-out pattern.
42. The cable entry frame (2) as claimed in any one of claims 22-41 , wherein the cable entry frame (2) is formed from at least two frame parts which are joinable along a joint which intersects the reception space (7).
43. A cable entry system (30) comprising a cable entry insert (1 , 1')according to any one of claims 1-21 and a cable entry frame (2) according to any one of claims 22-42.
44. The cable entry system (30) as claimed in claim 43, wherein sealing means for sealing between the insert (1 , 1') and the frame (2) are arranged either on the insert (1 , 1') or on the frame (2).
45. The cable entry system (30) as claimed in claim 43, wherein sealing means for sealing between the insert (1 , 1') and the frame (2) are arranged on both the insert (1 , 1') and on the frame (2).
46. An cable entry installation (25) comprising a cable entry system (30) as claimed in any one of claims 43-45 and a panel (20).
47. The cable entry installation (25) as claimed in claim 46, wherein thecable entry insert (1 , 1 ') is clamped between the frame (2) and a panel (20).
48. A cable entry insert (1 , 1 '), comprising a rectangular, substantially planar body, which is sized and adapted to be fitted in a cable entry frame (2), wherein: the body presents a front side (3) and a rear side (4), and the rear side (4) is provided with locking means adapted for mechanically locking together said cable entry insert (1) with a second, similar cable entry insert (1 , 1 '), or with a cable entry frame, when said cable entry insert (1 , 1') and said second cable entry insert (1 , 1'), or cable entry frame, are arranged adjacent each other and in a common plane.
49. A cable entry frame (2), comprising: a body having a rectangular cable entry insert reception space (7), wherein: the cable entry frame has locking means for mechanically locking together the frame (2) with a cable entry insert (1 , 1') when received in the frame (2).
50. A cable entry installation, comprising: a cable entry frame (2), comprising a body having a rectangular cable entry insert reception space (7), a cable entry insert (1 , 1'), formed as a rectangular, substantially planar body, which is sized and adapted to be fitted in the cable entry insert reception space (7), and a panel (20) having a cable entry cut-out, wherein the cable entry insert (1) is clamped between the frame (2) and the panel (20).
51. A method for installing a cable entry system (30), comprising: providing at least one cable entry insert (1 , 1') as claimed in any one of claims 1-21 or 48; providing a cable entry frame (2) as claimed in any one of claims 22- 42 or 49; and arranging the cable entry insert (1 , 1') in the reception space (7) of the frame (2).
52. The method for installing a cable entry system (30) as claimed in claim 51 , further comprising arranging the frame (2) in the panel (20), such that the cable entry insert (1 , 1') is clamped between the frame (2) and the panel (20).
53. The method for installing a cable entry system (30) as claimed in any one of claims 51 or 52, further comprising providing at least two cable entry inserts (1 , 1').
54. The method according to claim 53, comprising interconnecting the at least two cable entry inserts (1 , 1') prior to arranging them in the frame (2).
EP08716437A 2008-03-11 2008-03-11 Cable entry device Withdrawn EP2269278A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/001930 WO2009112049A1 (en) 2008-03-11 2008-03-11 Cable entry device

Publications (1)

Publication Number Publication Date
EP2269278A1 true EP2269278A1 (en) 2011-01-05

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Application Number Title Priority Date Filing Date
EP08716437A Withdrawn EP2269278A1 (en) 2008-03-11 2008-03-11 Cable entry device

Country Status (2)

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EP (1) EP2269278A1 (en)
WO (1) WO2009112049A1 (en)

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Publication number Priority date Publication date Assignee Title
RU2609773C1 (en) * 2015-08-06 2017-02-02 Общество с ограниченной ответственностью "Тахион" All-weather thermal cabinet

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Publication number Priority date Publication date Assignee Title
GB2337870A (en) * 1998-04-29 1999-12-01 Nokia Telecommunications Oy Modular cable entry system
DE29924372U1 (en) * 1999-01-29 2002-12-05 Gabo Systemtech Gmbh Entry plate for pipe systems
DE102005056214B3 (en) * 2005-11-25 2007-06-21 Rittal Gmbh & Co. Kg Device for guiding cables or lines

Non-Patent Citations (1)

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Title
See references of WO2009112049A1 *

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