Cable lead through device

Abstract

A cable lead through device (1) with a framework (3) formed by a base beam (4), an upper beam (6), and lateral uprights (9) extending from the base beam (4) to the upper beam (6) on two opposite lateral sides (34) of the framework (3) to form receiving seats (12), wherein the framework (3) is divided into a first framework part (15) and a second framework part (16) connectable to each other in a closed position to lock cable grommets (19) in the receiving seats (12), wherein the lateral uprights (9) comprise a first base upright (91) and a second base upright (92) protruding from the base beam (4) and forming, together with the base beam (4), a first "U"-shaped receiving seat boundary (22), as well as a first upper upright (93) and a second upper upright (94) protruding from the upper beam (6) and forming, together with the upper beam (6), a second "U"-shaped receiving seat boundary (23), wherein, in the closed position, the first upper upright (93) is accommodated in a first upright seat (95) of the first base upright (91) and the second base upright (92) is accommodated in a second upright seat (96) of the second upper upright (94).

Description

DESCRIPTION"CABLE LEAD THROUGH DEVICE"

[0001] The present invention relates to a cable lead through device mountable to a wall, e.g., of an electric cabinet, at a passage opening through which electric cables or signal cables or fluid tubes must be guided, in an orderly and stable manner such as to ensure a desired degree of sealing and obviate the risk of undesired damage and movement of the same cables.

[0002] Threaded cable lead through devices are known from WO2018210892 A1 , having two frame parts connectable to each other in a closed position to form together an internally rectangular framework and a threaded tubular portion, protruding from the framework, and separable from each other in the open configuration. The two frame parts delimit a plurality of through seats for accommodating one or more elastic cable grommets applied around the cables or tubes, where

[0003] - when the two frame parts are in the open position, the cable grommets, together with the cables or ducts surrounded by them, can be positioned in the through seats or removed from the through seats,

[0004] - when the two frame parts are in the closed position, the cable grommets are in close contact with each other and against the frame parts, and, together with the frame parts, form a substantially waterproof body, crossed by the cables surrounded by the cable grommets.

[0005] It is further known to obtain a first U- or comb-shaped frame part with a base from which two lateral uprights protrude and, possibly, one further intermediate upright, where the through seats are delimited between two adjacent uprights, respectively, thus allowing a temporary insertion and positioning of the cable grommets into the first frame part only.

[0006] It is further known to provide a second frame part in the shape of a beam or cover connectable to the initially free ends of the lateral and (if provided) intermediate uprights of the first frame part to close the through seats and tighten the cable grommets in the closed position.

[0007] It is also known to obtain the threaded tubular portion in two separable parts, each belonging to one of the two frame parts, respectively, and having a different circumferential extension, like the division of the frame into different parts (U-shaped part, beam part) having a different extension.

[0008] It is further known to obtain the cable grommets with an outer surface, grooved or forming ribs, and obtain the through seats of the frame parts with a grooved or ribbed intrados surface, in order to increase a localized contact pressure, and thus the sealing, between the through seats and the cable grommets when the cable lead through device is in the closed position.

[0009] The fastening of the cable lead through device to the application wall is carried out byinserting the tubular threaded portion through an opening in the application wall until the framework abuts against the application wall and the screwing of a ring nut onto the threaded portion against the application wall on the opposite side to the framework.

[0010] The cable lead through devices of the prior art nonetheless have several drawbacks.

[0011] The radically non-symmetrical shapes and having a different size and rigidity of the two frame parts forming the internally rectangular framework and delimiting the through seats in order to accommodate the cable grommets, are the cause of unplanned and non-uniform deformations of the through seats with the cable lead through device assembled, and therefore of non-uniform sealing pressures. This non-uniform sealing makes it necessary to design the cable lead through device with greater interference values between the size of the framework and the size of the cable grommets, making it more difficult to insert the cable grommets into the through seats.

[0012] The radically non-symmetrical shapes with different size and rigidity of the two frame parts forming the threaded tubular portion cause threading misalignments due to the inevitable deformation differences of the two frame parts when they are tightened around the cable grommets and up to the worst case in which, when tightening the ring nut on the threaded portion, the threading part having a smaller circumferential extension bends inwards interrupting the circular continuity of the thread.

[0013] Furthermore, in cable lead through devices of the prior art, sealing barrier continuity is not fully ensured satisfactorily between the interface regions between the cable grommets and the through seats and the sealing regions between the different frame parts and the sealing regions between the frame parts and the wall.

[0014] The correct positioning of an additional gasket between the cable lead through device and the application wall is not always convenient.

[0015] The frame parts made of synthetic material by injection molding have planarity tolerances which add to the planarity tolerances of the application wall and are not always completely compensated for by the elastic deformation of a flat gasket interposed between the cable lead through device and the application wall.

[0016] Finally, when assembling and wall-mounting the cable lead through device, both the additional gasket and the connection nuts for the connection between the two frame parts can easily detach from the frame parts and fall or get lost.

[0017] Therefore, it is the object of the present invention to provide a cable lead through device, in particular (but not only) an improved threaded cable lead through device having features such as to obviate at least some of the drawbacks of the prior art.

[0018] It is a particular object of the invention to provide a cable lead through device having features such as to simplify the assembly and mounting of the frame parts, and facilitate thereception of the cable grommets in the frame parts.

[0019] It is a further particular object of the invention to provide a cable lead through device having features such as to improve the sealing of the cable lead through device against the penetration of humidity and water.

[0020] At least some of the objects are achieved by a cable lead through device according to claim 1 .

[0021] The dependent claims relate to advantageous and preferred embodiments.

[0022] Brief description of the invention

[0023] According to an aspect of the invention, a cable lead through device, e.g., of the threaded type, comprises:

[0024] A) an internally rectangular framework formed by:- a base beam on a lower side of the framework,- an upper beam on an upper side of the framework opposite to the lower side,

[0025] - a plurality of uprights comprising at least two lateral uprights extending from the base beam to the upper beam on two lateral sides 34 opposite to the framework, and possibly one or more intermediate uprights parallel to the lateral uprights and extending from the base beam to the upper beam in an intermediate region between the two lateral uprights,

[0026] where the uprights delimit one or more through receiving seats therebetween in a cable passage direction, transverse to a framework plane of the framework,

[0027] where the framework is divided at least into a first framework part formed by a first frame part of the cable lead through device and a second framework part formed by a second frame part of the cable lead through device, connectable to each other in a closed position constituting a use configuration of the cable lead through device, and separable from each other in an open position which allows inserting cable grommets into the receiving seats,

[0028] where the framework forms a mounting side intended to face an application wall and a visible side opposite to the mounting side,

[0029] B) one or more cable grommets made of elastomeric material, positionable in the receiving seats in an operating position,

[0030] where the lateral uprights comprise a first base upright and a second base upright protruding from the base beam on the two opposite sides of the framework and extending, in the closed position, to the upper beam,

[0031] where, in the open position, the first base upright and the second base upright form, together with the base beam, a first “U”-shaped receiving seat boundary,

[0032] where the lateral uprights further comprise a first upper upright and a second upper upright protruding from the upper beam on the two opposite sides of the framework and extending, in the closed position, to the base beam,

[0033] where, in the open position, the first upper upright and the second upper upright form, together with the upper beam, a second “U”-shaped receiving seat boundary,

[0034] where, in the closed position:

[0035] - the first receiving seat boundary and the second receiving seat boundary are overlapping at the lateral uprights,

[0036] - the first upper upright is accommodated in a first upright seat of the first base upright and the second base upright is accommodated in a second upright seat of the second upper upright.

[0037] The special configuration of two “U”-shaped receiving seat boundaries, both extending in a complete manner from the base beam to the upper beam (therefore, along the entire height of the receiving seats), and insertable, the one into the other, in the closed position, significantly reduces the difference in shape, extension and rigidity between the first framework part and the second framework part. This reduces unplanned and uneven deformations of the receiving seats, making the sealing pressures more uniform.

[0038] The special configuration of two “U”-shaped receiving seat boundaries, both extending in a complete manner from the base beam to the upper beam (therefore along the entire height of the receiving seats), further facilitates the insertion of the cable grommets into the receiving seats in the open position, keeping the cable grommets in the receiving seats in the closed position when the two frame parts are not yet fastened to each other, for example by means of connection bolts.

[0039] The special configuration of two “U”-shaped receiving seat boundaries, both extending in a complete manner from the base beam to the upper beam (therefore along the entire height of the receiving seats), and insertable into each other in the closed position, increases the rigidity and shape precision of the cable lead through device and thus improves all the sealing interfaces between the components of the cable lead through device and between the cable lead through device and the application wall.

[0040] According to an aspect of the invention, the first framework part and the second framework part are substantially the same or almost the same in shape, size and rigidity.

[0041] According to an aspect of the invention, the cable lead through device further comprises a threaded tubular portion protruding from the framework in the cable passage direction divided at least into a first threaded part formed by the first frame part and a second threaded part formed by the second frame part, as well as a ring nut screwable onto the threaded tubular portion.

[0042] The cable lead through device is lockable to an application wall at a passage opening (e.g., for the passage of cables) by inserting the threaded tubular portion through the passage opening until the framework abuts against the application wall and the screwing of the ring nuton the threaded portion against the application wall on the side opposite to the framework.

[0043] Brief description of the figures

[0044] In order to better understand the invention and appreciate the advantages thereof, some non-limiting exemplary embodiments will be described below with reference to the drawings, in which:

[0045] figure 1 is a front perspective view (“visible side”) of a cable lead through device provided with four cable grommets according to an embodiment,

[0046] figure 1 A is a diagrammatic sectional side view of a threaded cable lead through device applied to an application wall,

[0047] figure 2 is a rear perspective view (“mounting side”) of the cable lead through device in figure 1 ,

[0048] figure 3 is a front perspective view (“visible side”) of a cable lead through device provided with only one cable grommet according to an embodiment,

[0049] figure 4 is an exploded front perspective view of the cable lead through device in figure1 ,

[0050] figure 5 is an exploded rear perspective view of the cable lead through device in figure2,

[0051] figure 6 is a front perspective view of a first frame part of the cable lead through device according to an embodiment,

[0052] figure 7 is a rear perspective view of the first frame part in figure 6,

[0053] figure 8 is a view from above of the first frame part in figure 6,

[0054] figure 9 is a front perspective view of a second frame part of the cable lead through device according to an embodiment,

[0055] figure 10 is a perspective and sectional view from above of a cable lead through device according to an embodiment, provided with cable grommets,

[0056] figure 1 1 is a perspective and sectional view from below of the cable lead through device in figure 10, devoid of cable grommets,

[0057] figure 12 is a rear perspective view (“mounting side”) of a gasket divided into a first gasket part and a second gasket part of the cable lead through device according to an embodiment,

[0058] figure 13 is a front perspective view (“visible side”) of a gasket in figure 12.

[0059] Description of embodiments

[0060] With reference to the figures, a single or multiple cable lead through device 1 (i.e., suitable for obtaining a sealing passage of only one or of a plurality of cables or ducts (not shown) through an application wall 2), e.g., a cable lead through device of the threaded type, comprises:

[0061] A) an internally rectangular framework 3 formed by:- a base beam 4 on a lower side 5 of the framework 3,- an upper beam 6 on an upper side 7 of the framework 3 opposite to the lower side 5,- a plurality of uprights 8 comprising at least two lateral uprights 9 extending from the base beam 4 to the upper beam 6 on two opposite lateral sides 34 of the framework 3, and possibly one or more intermediate uprights 10 parallel to the lateral uprights 9 and extending from the base beam 4 to the upper beam 6 in an intermediate region 11 between the two lateral uprights 9.

[0062] The uprights 8 delimit one or more through receiving seats 12 therebetween in a cable passage direction 13, transverse to a framework plane 14 of the framework 3.

[0063] The framework 3 is divided at least into a first framework part 15 formed by a first frame part 17 of the cable lead through device 1 and a second framework part 16 formed by a second frame part 18 of the cable lead through device 1 , connectable to each other in a closed position (Figures 1 , 2) constituting a use configuration of the cable lead through device 1 , and separable from each other in an open position (Figures 4, 5) which allows inserting cable grommets 19 into the receiving seats 12.

[0064] The framework 3 forms a mounting side 20 intended to face an application wall 2 and a visible side 21 opposite to the mounting side 20.

[0065] The cable lead through device 1 can be provided alone or together with one or more of the aforesaid cable grommets 19 made of elastomeric material, positionable in the receiving seats 12 in an operating position.

[0066] The lateral uprights 9 comprise a first base upright 91 and a second base upright 92 protruding from the base beam 4 on the two opposite sides of the framework 3 and extending, in the closed position, to the upper beam 6, where, in the open position, the first base upright 91 and the second base upright 92 form, together with the base beam 4, a first “U”-shaped receiving seat boundary 22.

[0067] The lateral uprights 9 further comprise a first upper upright 93 and a second upper upright 94 protruding from the upper beam 6 on the two opposite sides of the framework 3 and extending, in the closed position, to the base beam 4, where, in the open position, the first upper upright 93 and the second upper upright 94 form, together with the upper beam 6, a second “U”-shaped receiving seat boundary 23.

[0068] In the closed position, the first receiving seat boundary 22 and the second receiving seat boundary 23 are mutually overlapping at the lateral uprights 9, and the first upper upright 93 is accommodated in a first upright seat 95 of the first base upright 91 and the second base upright 92 is accommodated in a second upright seat 96 of the second upper upright 94.

[0069] Detailed description of the framework 3

[0070] According to an embodiment, the first framework part 15 forms (in a single piece) the base beam 4, the first base upright 91 and the second base upright 92 in the “U”-shaped configuration and (if provided) the at least one intermediate upright 10 in a comb-shaped configuration (figures 6, 7). The second framework part 16 forms (in a single piece) the upper beam 6, the first upper upright 93 and the second upper upright 94 in the “U”-shaped configuration (Figures 4, 9) and (optionally or if provided) the at least one intermediate upright 10 in the comb-like configuration (not shown).

[0071] Advantageously, the intermediate upright 10 is formed in only one of the first 15 and second 16 framework parts, because in the intermediate region 1 1 , the resultants of the elastic compression forces exerted by the cable grommets 19 are cancelled out and do not require any particular framework 3 rigidity in such an intermediate region 1 1 .

[0072] According to an embodiment, the first framework part 15 and the second framework part 16 are substantially the same or almost the same in shape, size and rigidity, except for the possible additional presence of the intermediate upright 10 in only one of the first 15 and second 16 framework parts and except for possible gasket extension differences which are however negligible with reference to the shape and rigidity of the framework 3.

[0073] According to an embodiment, the base beam 4 and the first base upright 91 form a reinforced “L”-shaped framework corner and both have a thickness and / or a resistance module or a cross-section area (with respect to a longitudinal extension thereof) greater than a thickness and / or a resistance module or a cross-section area (with respect to the longitudinal extension) of the second base upright 92 (Figures 4, 6, 7).

[0074] Likewise, the upper beam 6 and the second upper upright 94 form a reinforced “L”- shaped framework corner and both have a thickness and / or a resistance module or a crosssection area (with respect to a longitudinal extension thereof) greater than a thickness and / or a resistance module or a cross-section area (with respect to the longitudinal extension) of the first upper upright 93 (Figures 4, 9).

[0075] According to an embodiment, the first upright seat 95 forms a groove which is open towards the second base upright 92 and which can be extended along the whole longitudinal extension of the first base upright 91. In the closed position, the first upright seat 95 accommodates the first upper upright 93 by embracing it on two opposite sides facing in the cable passage direction 13 and on a third side facing away from the second upper upright 94, and where a first receiving surface 97 of the first upper upright 93 facing the second upper upright 94 is not embraced by the first upright seat 95 and / or protrudes out of the first upright seat 95, possibly along the entire longitudinal extension of the first upright seat 95. This particular configuration ensures a mutual engagement between the first base upright 91 and the first upper upright 93 and, at the same time, an engagement between the cable grommet19 with at least also the first upper upright 93.

[0076] Likewise, according to an embodiment, the second upright seat 96 forms a groove which is open towards the first upper upright 93 and which can be extended along the whole longitudinal extension of the second upper upright 94. In the closed position, the second upright seat 96 accommodates the second base upright 92 by embracing it on two opposite sides facing in the cable passage direction 13 and on a third side facing away from the first base upright 91 , and where a second receiving surface 98 of the second base upright 92 facing the first base upright 91 is not embraced by the second upright seat 96 and / or protrudes out of the second upright seat 96, possibly along the entire longitudinal extension of the second upright seat 96. This particular configuration ensures a mutual engagement between the second base upright 92 and the second upper upright 94 and, at the same time, an engagement between the cable grommet 19 with at least also the second base upright 92.

[0077] More advantageously, in the closed position, a free end of the first upper upright 93 is inserted into a blind hole of the base beam 4 and a free end of the second base upright 92 is inserted into a blind hole of the upper beam 6.

[0078] The first framework part 15 and the second framework part 16 are connectable to each other by connection screws 24 insertable into connection holes of the first framework part 15 and the second framework part 16 and screwable with connection nuts 25, e.g., accommodated or interlocked in a captive and non-rotatable manner (in hexagonal seats) formed in both framework parts 15, 16, so as to obviate a risk of mounting two first or two second framework parts together which, due to the very similar shape thereof, could otherwise be confused.

[0079] According to an embodiment, the cable lead through device 1 is configured so that the two connection screws 24 are insertable and screwable onto the respective connection nuts 25 in opposite directions. This obviates the risk of mounting two first or two second framework parts together which, due to the very similar shape thereof, could otherwise be confused.

[0080] According to an embodiment, the connection nuts 25 are accommodated, one in the base beam 4 at the first base upright 91 and the other in the upper beam 6 at the second upper upright 94, where the second upper upright 94 forms a connection hole extending along the entire length of the second upper upright 94 to accommodate and guide one of the connection screws 24, and where the first base upright 91 forms a connection hole extending along the entire length of the first base upright 91 for accommodating and guiding the other of the connection screws 24, and thereby guiding the first framework part 15 and the second framework part 16 when approaching to each other.

[0081] An end of the base beam 4 opposite to the first base upright 91 and a free end of the second upper upright 94 (in the open position) form, one a connection protrusion 26 and theother a corresponding connection recess 27 for a mutual insertion thereof in the closed position (Figures 6, 9).

[0082] Likewise, an end of the upper beam 6 opposite to the second upper upright 94 and a free end of the first base upright 91 (in the open position) form, one a connection protrusion 26 and the other a corresponding connection recess 27 for a mutual insertion thereof in the closed position.

[0083] This further stabilizes and aligns the first framework part 15 and the second framework part 16 with each other.

[0084] In order to avoid the mounting of two identical framework parts (e.g., two first framework parts 15), the connection protrusion 26 and the connection recess 27 of two first framework parts 15 are incompatible with each other for obtaining a mutual insertion. Likewise, the connection protrusion 26 and the connection recess 27 of two second framework parts 16 are incompatible with each other for obtaining a mutual insertion.

[0085] Description of the mounting gasket 28 and the sealing system

[0086] The framework 3 comprises a mounting gasket 28 (Figures 2, 12), made of elastomeric material, over-molded on the framework 3, in particular on the first framework part 15 and on the second framework part 16 and protruding from the framework 3 on the mounting side 20. The need for a separate gasket and the risk of the incorrect positioning of the gasket are obviated by virtue of the overmolding of the mounting gasket 28 on the frame 3.

[0087] The mounting gasket 28 extends continuously around all the receiving seats 12, in particular along the base beam 4, the lateral uprights 8, and the upper beam 6.

[0088] In order to compensate for factory tolerances of the framework 3, the mounting gasket 28 protrudes from the surface of the frame 3 with a gasket height of at least 1 .5 mm, or in a range from 1 mm to 3 mm, e.g., 2 mm.

[0089] The mounting gasket 28 is also divided into a first gasket part 29 (formed at the first framework part 15), and a second gasket part 30 (formed at the second framework part 16) separate from each other in the open position and joined to each other in the closed position.

[0090] The framework 3 further comprises an upper beam gasket 31 , made of elastomeric material, overmolded on the framework 3, in particular only onto the second framework part 16 and protruding from the upper beam 6 towards the lower side 5 of the framework 3, in order to sealingly engage the first base upright 91 and, if provided, to sealingly engage the intermediate upright 10, and possibly, at least part of the cable grommet / s 19 bordering with the upper beam 6.

[0091] The need for a separate gasket and the risk of the incorrect positioning of the gasket are obviated by virtue of the overmolding of the upper beam gasket 31 on the frame 3.

[0092] According to a preferred embodiment, the upper beam gasket 31 comprises a “U”-shaped portion 31 U extending around the first upper upright 93 (Figure 9).

[0093] The upper beam gasket 31 is formed together with a part of the mounting gasket 28 (specifically the second gasket part 30) extending into the upper beam 6 in a single piece and with material continuity (figures 9, 12, 13).

[0094] The framework 3 further comprises a base beam gasket 32, made of elastomeric material, overmolded on the framework 3, in particular only onto the first framework part 15 and protruding from the base beam 4 towards the upper side 7 of the framework 3, in order to sealingly engage the second upper upright 94 and, only if provided, to sealingly engage an intermediate upright 10, and possibly, at least part of the cable grommet / s 19 bordering with the base beam 4.

[0095] According to a preferred embodiment, the base beam gasket 32 comprises a “II”- shaped portion 32U extending around the second base upright 92 (Figures 6, 7, 8).

[0096] The base beam gasket 32 is formed together with a part of the mounting gasket 28 (specifically the first gasket part 29) extending into the base beam 4 in a single piece and with material continuity (figures 7, 13).

[0097] Figures 12, 13 show the shape of elastomeric bodies obtained by means of injection overmolding on the first framework part 15 and on the second framework part 16 (with the framework parts 15, 16 removed), where both the portions that, in the finished product are outside the framework 3 and form the gaskets, and the portions that, in the finished product, are buried inside the framework 3, can be seen.

[0098] According to an embodiment, the base beam 4 and the first base upright 91 form, on the visible side 21 , a first sealing edge 33A protruding towards the upper side 7 and the second base upright 92, respectively (Figures 6, 7), where the cable grommet 19 is positionable against the first sealing edge 33A, obtaining a solid sealing line between the framework 3 and the cable grommet 19.

[0099] Likewise, according to an embodiment, the upper beam 6 and the second upper upright 94 form, on the visible side 21 , a second sealing edge 33B protruding towards the lower side 5 and the first upper upright 93, respectively, (Figure 9), where the cable grommet 19 is positionable against the second sealing edge 33B, obtaining a solid sealing line between the framework 3 and the cable grommet 19.

[0100] Description of the receiving seats 12

[0101] The receiving seats 12 form a plurality of grooves 35 and ribs 36 extending along the uprights 8 and intended to engage, in the operating position, a corresponding block coupling surface 37 of the cable grommet 19 with shape coupling and sealing pressure contact.

[0102] Advantageously, at least one of the ribs 36 also extends continuously in a front surface 38 of a free end (in the open position) of the upright 8 (in particular of the first baseupright 91 and / or of the second upper upright 94 and / or of the intermediate upright 10 (Figures 6, 9) to engage, (in the closed position, creating a solid sealing line), corresponding portions 31 U, 32U of the upper beam gasket 31 and / or of the base beam gasket 32.

[0103] Description of the threaded tubular portion 39

[0104] According to an embodiment, the cable lead through device 1 further comprises a threaded tubular portion 39 protruding from the framework 3 on the mounting side 20 in the cable passage direction 13, as well as a ring nut 40 made in one piece or divisible into several parts (split nut) screwable onto the threaded tubular portion 39.

[0105] The cable lead through device 1 is lockable to the application wall 2 at a passage opening 41 by inserting the threaded tubular portion 39 through the passage opening 41 until the framework 3 abuts against the application wall 2 and the screwing of the ring nut 40 onto the threaded portion 39 against the application wall 2 on the side opposite to the framework 3.

[0106] According to an embodiment, the threaded portion 39 is divided into a first threaded part 42 formed by the first frame part 17 and a second threaded part 43 formed by the second frame part 18, connectable to each other in the closed position (Figure 2) and separable from each other in the open position (Figure 5).

[0107] According to an embodiment, the first threaded part 42 forms a first semi-tubular segment having a circumferential extension of 180°, and the second threaded part 43 forms a second semi-tubular segment having a circumferential extension of 180° complementary to the first semi-tubular segment.

[0108] In order to facilitate the creation of the first frame part 17 and the second frame part 18 by means of injection molding and have a material extension sufficient for a continuous and resistant connection of the threaded parts 42, 43 with the framework parts 15, 16, according to an embodiment, the first threaded part 42 extends along (and is made in one piece with) the base beam 4 and the first base upright 91 , and the second threaded part 43 extends along (and is made in one piece with) the upper beam 6 and the second upper upright 94.Reference numerals cable lead through device 1 application wall 2 framework 3 base beam 4 lower side 5 of the framework upper beam 6 upper side 7 of the framework uprights 8lateral uprights 9 first base upright 91 second base upright 92 first upper upright 93 second upper upright 94 first upright seat 95 of the first base upright second upright seat 96 of the second upper upright first receiving surface 97 of the first upper upright second receiving surface 98 of the second base upright intermediate upright 10 intermediate region 11 receiving seats 12 cable passage direction 13 framework plane 14 first framework part 15 second framework part 16 first frame part 17 second frame part 18 cable grommets 19 mounting side 20 visible side 21 first “U”-shaped receiving seat boundary 22. second “U”-shaped receiving seat boundary 23. connection screws 24 connection nuts 25 connection protrusion 26 connection recess 27 mounting gasket 28 first gasket part 29 second gasket part 30 upper beam gasket 31 “U”-shaped gasket portion 31 U base beam gasket 32“U”-shaped gasket portion 32U first sealing edge 33A second sealing edge 33Blateral sides 34 grooves 35 ribs 36 block coupling surface 37 front surface 38 of the uprights threaded tubular portion 39 ring nut 40 passage opening 41 first threaded part 42 second threaded part 43

Claims

CLAIMS1. A cable lead through device (1 ) comprising a framework (3) formed by:- a base beam (4) on a lower side (5) of the framework (3),- an upper beam (6) on an upper side (7) of the framework (3) opposite to the lower side (5),- a plurality of uprights (8) comprising at least two lateral uprights (9) extending from the base beam (4) to the upper beam (6) on two opposite lateral sides (34) of the framework (3), wherein the uprights (8) delimit one or more through receiving seats (12) therebetween in a cable passage direction (13) transverse to a framework plane (14) of the framework (3), wherein the framework (3) is divided at least into a first framework part (15) formed by a first frame part (17) of the cable lead through device (1 ) and a second framework part (16) formed by a second frame part (18) of the cable lead through device (1 ), connectable to each other in a closed position and separable from each other in an open position, which allows inserting one or more cable grommets (19) into the receiving seats (12), wherein the framework (3) forms a mounting side (20) intended to face an application wall (2) and a visible side (21 ) opposite to the mounting side (20), wherein the lateral uprights (9) comprise a first base upright (91 ) and a second base upright (92) protruding from the base beam (4) on the two lateral sides (34) and extending, in the closed position, to the upper beam (6), wherein the first base upright (91 ) and the second base upright (92) form, together with the base beam (4), a first “U”-shaped receiving seat boundary (22), wherein the lateral uprights (9) further comprise a first upper upright (93) and a second upper upright (94) protruding from the upper beam (6) on the two lateral sides (34) and extending, in the closed position, to the base beam (4), wherein the first upper upright (93) and the second upper upright (94) form, together with the upper beam (6), a second “U”-shaped receiving seat boundary (23), wherein, in the closed position, the first upper upright (93) is accommodated in a first upright seat (95) of the first base upright (91 ) and the second base upright (92) is accommodated in a second upright seat (96) of the second upper upright (94).

2. The cable lead through device (1 ) according to claim 1 , wherein the first framework part (15) forms the base beam (4), the first base upright (91 ) and the second base upright (92) in the “U”-shaped configuration, and the second framework part (16) forms the upper beam (6), the first upper upright (93) and the second upper upright (94) in the “U”-shaped configuration.

3. The cable lead through device (1 ) according to claim 2, wherein the first framework part (15)and the second framework part (16) are substantially the same in shape, size, and rigidity.

4. The cable lead through device (1 ) according to any one of the preceding claims, wherein:- the base beam (4) and the first base upright (91) form a reinforced “L”-shaped framework corner and both have a thickness, a resistance module and a cross-section area greater than a thickness, a resistance module and a cross-section area of the second base upright (92),- the base beam (6) and the second upper upright (94) form a reinforced “L”-shaped framework corner and both have a thickness and a resistance module or a cross-section area greater than a thickness, a resistance module and a cross-section area of the first upper upright (93).

5. The cable lead through device (1 ) according to any one of the preceding claims, wherein:- the first upright seat (95) forms a groove which is open towards the second base upright (92), and- in the closed position, the first upright seat (95) accommodates the first upper upright (93) by embracing it on two opposite sides in the cable passage direction (13) and on a third side facing away from the second upper upright (94), and- a first receiving surface (97) of the first upper upright (93) facing the second upper upright (94), and wherein a first receiving surface (97) of the first upper upright (93) facing the second upper upright (94) is not embraced by the first upright seat (95) and / or protrudes out of the first upright seat (95), and / or wherein:- the second upright seat (96) forms a groove which is open towards the first upper upright (93), and- in the closed position, the second upright seat (96) accommodates the second base upright (92) by embracing it on two opposite sides in the cable passage direction (13) and on a third side facing away from the first base upright (91 ), and- a second receiving surface (98) of the second base upright (92) facing the first base upright (91 ), and wherein a second receiving surface (98) of the second base upright (92) facing the first base upright (91 ) is not embraced by the second upright seat (96) and / or protrudes out of the second upright seat (96).

6. The cable lead through device (1 ) according to any one of the preceding claims, wherein in the closed position, a free end of the first upper upright (93) is inserted into a blind hole of the base beam (4) and a free end of the second base upright (92) is inserted into a blind hole of the upper beam (6).

7. The cable lead through device (1 ) according to any one of the preceding claims, wherein the first framework part (15) and the second framework part (16) are connectable to each other by means of connection screws (24) insertable into connection holes of the first framework part (15) and of the second framework part (16) and screwable with connection nuts (25), wherein the two connection screws (24) are insertable and screwable with the respective connection nuts (25) in opposite insertion and screwing directions.

8. The cable lead through device (1 ) according to any one of the preceding claims, wherein an end of the base beam (4) opposite to the first base upright (91 ) and a free end of the second upper upright (94) form one a connection protrusion (26) and the other a corresponding connection recess (27) for a mutual insertion thereof in the closed position, and an end of the upper beam (6) opposite to the second upper upright (94) and a free end of the first base upright (91 ) form one a connection protrusion (26) and the other a corresponding connection recess (27) for a mutual insertion thereof in the closed position.

9. The cable lead through device (1 ) according to any one of the preceding claims, wherein the plurality of uprights (8) comprises an intermediate upright (10) parallel to the lateral uprights (9) and extending from the base beam (4) to the upper beam (6) in an intermediate region (1 1 ) between the two lateral uprights (9).

10. The cable lead through device (1 ) according to any one of the preceding claims, wherein the framework (3) comprises a mounting gasket (28) made of elastomeric material, overmolded on the framework (3) and protruding from the framework (3) on the mounting side (20), wherein the mounting gasket (28) extends without sealing interruptions around all the receiving seats (12) along the base beam (4), the lateral uprights (8), and the upper beam (6). wherein the mounting gasket (28) is divided into a first gasket part (29) and a second gasket part (30) separate from each other in the open position and joined to each other in the closed position.

11. The cable lead through device (1 ) according to any one of the preceding claims, wherein the framework (3) further comprises an upper beam gasket (31 ) made of elastomeric material, over-molded on the second framework part (16) and protruding from the upper beam (6) towards the lower side (5) so as to sealingly engage the first base upright (91 ) in the closed position.

12. The cable lead through device (1 ) according to claims 9 and 11 , wherein the upper beamgasket (31 ) is configured to sealingly engage also the intermediate upright (10) in the closed position.

13. The cable lead through device (1 ) according to any one of the preceding claims, wherein the framework (3) further comprises a base beam gasket (32) made of elastomeric material, over-molded on the first framework part (15) and protruding from the base beam (4) towards the upper side (7) so as to sealingly engage the second upper upright (94) in the closed position.

14. The cable lead through device (1 ) according to claims 11 and 13, wherein the upper beam gasket (31) comprises a “U”-shaped portion (31 U) injection molded around the first upper upright (93), and wherein the base beam gasket (32) comprises a “U”-shaped portion (32U) injection molded around the second base upright (92).

15. The cable lead through device (1 ) according to claims 10, 11 and 13, wherein:- the upper beam gasket (31 ) is formed together with the second gasket part (30) of the mounting gasket (28) in a single piece and with material continuity,- the base beam gasket (32) is formed together with the first gasket part (29) of the mounting gasket (28) in a single piece and with material continuity.

16. The cable lead through device (1 ) according to any one of the preceding claims, wherein the base beam (4) and the first base upright (91 ) form, on the visible side (21 ), a first angular sealing edge (33A), protruding towards the upper side (7) and the second base upright (92), respectively, wherein the cable grommet (19) is positionable against the first sealing edge (33A) obtaining a sealing line on the visible side, and wherein the upper beam (6) and the second upper upright (94) form, on the visible side (21 ), a second angular sealing edge (33B), protruding towards the lower side (5) and the first upper upright (93), respectively, wherein the cable grommet (19) is positionable against the second sealing edge (33B) obtaining a sealing line on the visible side, wherein, in the closed position, the first sealing edge (33A) and the second sealing edge (33B) form together a closed rectangular sealing edge extending all around the one or more receiving seats (12).

17. The cable lead through device (1 ) according to any one of the preceding claims, wherein the receiving seat (12) forms a plurality of grooves (35) and ribs (36) extending along the uprights (8) and intended to engage a corresponding block coupling surface (37) of the cable grommet (19),wherein at least one of the ribs (36) also extends continuously in a front surface (38) of a free end of the upright (8) to engage, in the closed position, corresponding gasket portions (31 U, 32U) of the upper beam (6) and / or of the base beam (4).

18. The cable lead through device (1 ) according to any one of the preceding claims, comprising a threaded tubular portion (39) protruding from the framework (3) on the mounting side (20) in the cable passage direction (13) and a ring nut (40) screwable onto the threaded tubular portion (39), wherein the threaded portion (39) is divided into a first threaded part (42) formed by the first frame part (17) and a second threaded part (43) formed by the second frame part (18), and connectable to each other in the closed position and separable from each other in the open position, wherein the first threaded part (42) extends along the base beam (4) and the first base upright (91 ), and the second threaded part (43) extends along the upper beam (6) and the second upper upright (94).

19. The cable lead through device (1 ) according to claim 18, wherein the first threaded part (42) forms a first semi-tubular segment having a circumferential extension of 180°, and the second threaded part (43) forms a second semi-tubular segment having a circumferential extension of 180° complementary to the first semi-tubular segment.

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