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

Definitions

• the present invention relates to a fairlead assembly for passing and guiding a cable, also headed, in an opening, for example of a container, such as an electrical cabinet, so that the cable is retained and sealed, preventing fluids and/or gases and/or dusts from entering or exiting from said container and at the same time preventing the cable from being torn or mistakenly moved from its predefined position during installation.
• the present invention relates to assemblies which are used when a secure connection between machinery and equipment is required, and which are robust and reliable, even in applications where there is abundant presence of water, dust, vibrations or extreme temperatures.
• the present invention relates to fairlead assemblies which allow carrying out a fast and safe passage of headed cables, particularly useful also in the maintenance and overhaul of installations and machinery.
• the divisible strip and the openable grommets prevent the cutting and wiring of already headed cables. In this way, the guarantee of shielding and sealing of cables is preserved, not only electrical cables but also sheaths of various diameters, is preserved .
• the grommets have their own housing in the frame which guides them on opposite sides and are securely fixed to the frame even during assembly.
• connecting elements indicated with V
• ribs indicated with 5
• cables for example, headed electrical cables, as well as cables without connectors, can be quickly inserted into electrical equipment, electrical panels or machines. At the same time, the cables are sealed with a high degree of tightness.
• FIG. 1 is an axonometric view of a closed fairlead assembly
• FIG. 3 is a cross section, according to the line III-
• FIG. 6 is an axonometric view from the opposite side with respect to what is shown in figure 5, of the half-frame of figure 5;
• FIG. 7 is an axonometric view of a cable gripping element ;
• FIG. 12 is axonometric views of four assembly steps, according to a second method, of a cable gripping element to a half-frame, in which the cable gripping element is coupled to the half-frame with a sliding movement in axis or parallel to the half-frame itself;
• FIG. 16 is an axonometric view of the final insertion step of two more cable gripping elements in the assembly of figure 15;
• FIG. 20 and figure 21 are two axonometric views of a further embodiment of the cable gripping element, where hooking elements are provided on opposite sides of the cable gripping element, for connecting said cable gripping element to two opposite sides of the frame, for example to both the first half-frame and the second half-frame when coupled together and connected in the operating position;
• FIG. 22 is a front view of four different cable gripping elements, of different sizes and with cable openings of different width and in some cases in different numbers for each cable gripping element;
• . - figures 23 and 24 are lateral views of 30 fairlead assemblies of different sizes, with a different number of cable gripping elements for each frame and different sizes and/or different numbers of cable openings for each cable gripping element;
• FIG. 27 is an axonometric view in separate parts of a frame, connecting screws and bolts for connecting the half-frames, as well as the means for fastening the frame to a wall;
• FIG. 28 is an axonometric view of an assembly according to an embodiment in which the half-frames house a single gripping element and a threaded tubular frame body protrudes from the frame for connecting the frame to a wall;
• FIG. 29 is an axonometric view of the assembly of figure 28 in which the closest half-frame has been removed to better visualize the parts of the assembly;
• FIG. 30 is an axonometric view of an assembly according to an embodiment in which the half-frames house four gripping elements and a threaded tubular frame body protrudes from the frame for connecting the frame to a wall;
• FIG. 31 is an axonometric view of the assembly of figure 30 in which the closest half-frame has been removed to better visualize the parts of the assembly;
• . - figures 32 and 33 are axonometric views from different angles of a cable gripping element in which at least a portion of the peripheral grommet surface is a flat grommet surface;
• FIG. 34 is an axonometric view of a snap-hooking counter-frame adapted to be fixed to a wall and to receive with snap-hooking assembly a fairlead assembly according to the invention
• FIG. 35 is an axonometric view and in separate parts of a fairlead assembly in which two half-frames are about to be connected with their connecting screws and bolts, provided with snap-hooking frame seats adapted to receive elastic counter-frame hooks for the snap-hooking in a counter-frame;
• FIG. 36 is an axonometric view of a closed fairlead assembly according to a still further embodiment, in which four headed cables are inserted and retained;
• FIG. 38 is an axonometric view partially in separate parts of the frame of the fairlead assembly of figure 35 closed with a seal and a tightening nut;
• FIG. 42 is an axonometric view in separate parts of the open frame of figure 41.
• a fairlead assembly 1 for passing and guiding a cable in an opening so that the cable is retained and sealed;
• said cable gripping element 9 comprises at least one hooking element 14; said at least one hooking element 14 comprises at least one undercut hooking extension 15;
• said cable gripping element 9 comprises at least one cable opening 11, or at least one pierceable membrane which forms said cable opening 11.
• said frame side 5 comprises at least one peripheral frame surface 6 facing said central opening 4.
• said frame seat 7 is obtained in said frame side 5 and comprises said at least one undercut portion 8 placed in an undercut position with respect to said peripheral frame surface 6.
• said hooking element 14 is inserted into said frame seat 7 so as to allow said peripheral grommet surface 10 to be coupled to said peripheral frame surface 6.
• said undercut hooking extension 15 of said hooking element 14 fits in an undercut position in said undercut portion 8.
• said undercut hooking extension 15 of said hooking element 14, when it is inserted in an undercut position into said undercut portion 8, is accommodated with clearance in said undercut portion 8, so that said cable gripping element 9, when it is not force-coupled to said frame 2 yet, can slide in said frame seat 7.
• said hooking element 14 is elastic, and said hooking element 14 has a dimension which also allows inserting said hooking element 14 snappingly into said frame seat 7 in a direction transverse to the longitudinal extension of said frame seat 7.
• said assembly 1 comprises at least one connecting screw 29.
• said first and second sides 19, 22; 20, 23 of said first and second half-frames 17, 21 are rectilinear sides.
• said frame seat 7 opens outside the half-frame so as to insert said hooking element 14 into said frame seat 7 by virtue of the clearance 16 provided between said hooking element 14 and said frame seat 7.
• said hooking element 14 comprises a pair of opposite undercut hooking extensions 15.
• said hooking element 14 comprises an elastic hooking element body.
• said cable gripping element 9, or grommet is a plurality of cable gripping elements 9 which are available being adjacent to one another.
• said plurality of cable gripping elements 9 is force-coupled to one another and to said frame 2 while applying a compression action to the cable 12 or the cables 12 accommodated in said cable openings 11, thus sealing the cable 12 and forcedly retaining the cable 12 itself.
• said cable gripping element 9 comprises at least one grommet ridge 24 which protrudes from at least one said peripheral grommet surface 10 and is adapted to be geometrically coupled to at least one grommet seat 25 provided in an adjacent cable gripping element 9 and/or in at least one frame side 5; 19, 20, 22, 23.
• said cable gripping element 9 comprises at least one grommet ridge 24 which protrudes from at least one said peripheral grommet surface 10 and is adapted to be geometrically and intimately coupled to at least one grommet seat 25 provided in an adjacent cable gripping element 9 and/or in at least one frame side 5; 19, 20, 22, 23.
• said at least one grommet ridge 24 comprises tapered or conical flanks.
• said grommet seat 25 comprises tapered or conical flanks which are complementary to said tapered or conical flanks of at least one grommet ridge 24.
• said cable gripping element 9 comprises at least one of said peripheral grommet surfaces 10 which is a flat grommet surface 45 and is adapted to rest on a flat surface of an adjacent cable gripping element 9 or at least one frame side 5; 19, 20, 22, 23.
• said assembly comprises a plurality of cable gripping elements 9 and at least one of the cable gripping elements 9 is free from said cable opening 11 and is used as an element for closing a portion of said central opening 4.
• said assembly comprises a plurality of cable gripping elements 9 and at least one of the cable gripping elements 9 is free from said gripping element 14.
• said central opening 4 having a predetermined extension evaluated with respect to said rim 3 and said predetermined extension of said central opening 4 corresponds to an extension multiple of a cable gripping element 9, so that this multiplicity of cable gripping elements 9 when placed side by side completely obstructs said central opening 4 and is forcedly coupled to said frame 2 when it is closed and under operating conditions.
• said frame 2 comprises at least one frame side 5; 19, 22 of predominant extension with respect to the other frame sides and wherein said frame seat is provided in said one frame side 5; 19, 22.
• said frame 2 comprises a resting surface 31 for resting said frame 2 on a wall 32 in which a cable passage opening 34 is provided.
• said assembly comprises at least one frame seal 35 arranged on said resting surface 31 and adapted to be interposed between said frame 2 and said wall 32 for a sealed coupling.
• said frame seal 35 is a plurality of frame seals 35, each adapted to be coupled to a half frame 17, 18.
• said frame seal 35 comprises at least one seal hooking element 39 adapted to be inserted into at least one seal hooking seat 40 provided in said frame 2.
• said frame 2 comprises at least one fastening seat 36 forming a through hole adapted to accommodate means 38 for fixing frame 2 to a wall 32, e.g. of a container 33 in which a cable passage opening 34 is obtained, which opening is completely obstructed by said assembly 1 when it is closed under operating conditions and resting against the wall 32 in the edge portion thereof which is adjacent to said container cable passage opening 34.
• said snap-hooking counter frame 42 comprises at least one elastic counter-frame hook 43 adapted to be snappingly connected into said frame snap-hooking seat
• the tubular frame body 46 comprises a resting flange 48 adapted to cooperate with said wall
• said tubular frame body 46 comprises a plurality of half-frame bodies 49, each protruding from a respective half-frame 17, 18 to form a tubular frame 46 when the half-frames 17, 18 are mutually assembled and connected.
• said frame seat 7 is a pair of frame seats 7 which extend parallel to each other.
• said hooking elements 14 are four in number, for example two for each opposite side of the cable gripping element 9.
• said cable gripping elements 9 comprise at least one cable opening 11 which between one cable gripping element 9 and another cable gripping element 9 present in the same fairlead assembly 1 have different widths, for example different diameter.
• said cable gripping elements 9 comprise more than one cable opening 11, for example two or three or four cable openings 11.
• each fairlead assembly 1 comprises from 1 to 10 cable gripping elements 9.
• At least one of said hooking elements 14 is in a single piece with said cable gripping element 9 or with a part of said cable gripping element 9.
• said frame 2 comprises a plurality of half-frames 17, 18 adapted to be mutually connected to form said rim 3 which encircles said central opening 4 when said plurality of half-frames 17, 18 is mutually connected.
• each half-frame 17, 21 comprises in one first side a snap-hooking tab 60 and in a second side a snap-hooking recess 63 adapted to receive a portion of said snap-hooking tab 60.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Installation Of Indoor Wiring (AREA)
• Details Of Indoor Wiring (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=66166344

Family Applications (1)

Country Status (3)

Families Citing this family (2)

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• 2019
  • 2019-01-03 IT IT102019000000034A patent/IT201900000034A1/it unknown
  • 2019-12-16 WO PCT/IB2019/060856 patent/WO2020141382A1/en unknown
  • 2019-12-16 EP EP19835757.6A patent/EP3906600A1/en active Pending

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