Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
  • H01R4/36—Conductive members located under tip of screw
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/46—Bases; Cases
  • H01R13/465—Identification means, e.g. labels, tags, markings
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/28—Clamped connections, spring connections
  • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
  • H01R4/305—Clamped connections, spring connections utilising a screw or nut clamping member having means for facilitating engagement of conductive member or for holding it in position

Definitions

• TITLE Electrical interconnection device for earthing electrical conductors
• the invention relates, on the one hand, to an electrical interconnection device for earthing electrical conductors as well as to an assembly formed of electrical conductors engaged in such a device and, on the other hand, a method of electrical interconnection of electrical conductors using such a device.
• Electrical interconnection devices are known for grounding electrical conductors, in particular devices in the form of a terminal block.
• Such a terminal block is for example provided with a body in which are formed holes provided to receive electrical conductors having stripped ends, and clamping members provided to clamp the stripped ends of the electrical conductors in the holes for their attachment to the terminal block. and their electrical interconnection with an earthing cable, itself mechanically and electrically secured to the terminal block.
• the invention aims to provide an electrical interconnection device for grounding electrical conductors of a similar type and having a terminal block making its use particularly simple and convenient.
• an electrical interconnection device for earthing electrical conductors comprising a terminal block having a main body, first orifices made in the main body and intended reception areas. to accommodate the electrical conductors, and clamping members configured to be introduced into the first holes of the main body and to secure the electrical conductors to the terminal block and electrically interconnect them for grounding; characterized in that it is provided with at least one connecting member secured by a first end to the main body of the terminal block and having attachment areas to which the clamping members are mechanically connected.
• the device according to the invention makes it possible, thanks to the attachment zones provided on the connecting member, to facilitate the positioning of the clamping members in the first reception orifices vis-à-vis the electrical conductors located at the level. reception areas.
• the device facilitates the establishment of an electrical interconnection with these electrical conductors with a view to their earthing.
• the conductors to be interconnected for their grounding can be lugged or bare conductors.
• At least one clamping member may have an actuating portion intended to remain outside the main body and a clamping portion intended to be at least partially introduced into a first orifice.
• At least one attachment area of the connecting member is engaged between the actuating portion and the clamping portion.
• the actuating portion may be a gripping portion provided with a handle electrically insulated from the clamping portion.
• At least one clamping member may have an interface piece arranged between the actuating portion and the clamping portion, and provided with a fixing collar facing the actuating portion and around which is mechanically connected a attachment zone of the connecting member as well as a bearing face from which the clamping portion protrudes.
• the device is configured to receive lugged electrical conductors and the receiving areas are formed on a face of the main body of the terminal block at which the first orifices emerge, opposite these first orifices, and the lugged electrical conductors are supported on reception areas.
• the first orifices may pass through so that the clamping members can be introduced through one side or another of these first orifices.
• the device may include second orifices formed in the main body of the terminal block and forming reception areas for receiving electrical conductors, with the first orifices which join the second orifices in the main body of the terminal block.
• the first orifices and second orifices may be formed substantially at right angles to each other.
• the device is configured to receive stripped or thimbled electrical conductors in the second ports.
• the main body of the terminal block may be generally tubular and the first orifices and second orifices are distributed longitudinally on this body.
• the connecting member may be engaged by its first end on one side of the terminal block, around a groove in the main body.
• the device may include a grounding wire mechanically secured to the side of the terminal block, against a contact washer adjacent to the groove.
• Another subject of the invention is an assembly comprising an electrical interconnection device as described above, electrical conductors interconnected for their grounding, which electrical conductors are located at the level of zones of. receptions of a terminal block of the electrical interconnection device and secured to a main body of the terminal block by clamping members introduced into the first holes of the main body, with the clamping members which are mechanically connected to the attachment zones of at least one connecting member of the device, itself secured by a first end to the main body of the terminal block.
• the conductors to be interconnected for their grounding can be lugged or bare conductors.
• Another subject of the invention is a method of electrical interconnection and of grounding of electrical conductors to using an electrical interconnection device as described above, comprising the step of mounting the electrical conductors on receiving areas of a main body of a terminal block of the electrical interconnection device, the step of grasping the clamping members of the device which are connected to the attachment zones of at least one connecting member, itself secured by a first end to the main body of the terminal block, and of inserting them into the first orifices of the main body of the terminal block, and the step of securing the electrical conductors to the main body of the terminal block using the clamps and electrically interconnect them for their grounding.
• the conductors to be interconnected for their grounding can be lugged or bare conductors.
• Figure 1 shows schematically an electrical interconnection device according to the invention, on which are interconnected three electrical conductors with flat lugs of an electric motor, with a grounding cable.
• Figure 2 is a view similar to that of Figure 1, with the difference that the electrical conductors are stripped rather than lugged or have tubular lugs.
• FIG. 3 is a front view of the device of FIGS. 1 and 2, showing in more detail a terminal block and a clamp of this device, without the electrical conductors.
• FIG. 4 is a partial perspective view of the terminal block taken in isolation.
• FIG. 5 shows a partial front view of the terminal block taken in isolation.
• Figure 6 is a sectional view of a terminal block mounting member.
• Figure 7 is a perspective view of the main body of the terminal block.
• FIG. 8 is a rear view, partially cut away, of the main body of the terminal block.
• Figure 9 is a top view of the main body of the terminal block.
• Figure 1 schematically shows an electric machine 1, for example a three-phase electric motor, having three first electric conductors 2 which are electrically interconnected with a grounding cable 3, by means of an electric interconnection device 5 .
• the first three electrical conductors 2 have a first predetermined section and are each provided at least at a free end opposite to the electrical machine 1, with a connection terminal (not shown). These are the first electrical conductors 2, called lugs, and preferably flat lugs.
• first electrical conductors 2 with lugs are mechanically and electrically secured to a terminal block 6 of the electrical interconnection device 5, using clamping members 7 which are interconnected by a connecting member 8, itself mechanically secured. by a first end 8 on one side 9 of terminal block 6.
• the first electrical conductors 2 lugs are here mounted on top of terminal block 6.
• the grounding cable 3 is mechanically and electrically secured by a first end 10, on the same side 9 of the terminal block 6.
• the grounding cable 3 is also connected by a second end 11 opposite its first end 10, to a grounding clamp 12, for example called a vice clamp.
• the assembly formed by the electrical interconnection device 5, of a portion of the first three electrical conductors 2 secured to the terminal block 6 and of a portion of the cable earthing 3 also attached to terminal block 6, can be inserted into a waterproof bag (not shown) provided or not with a strap for its suspension and or its carrying, and from which protrude other portions of the first three conductors electrical 2 and the earth cable 3 which pass respectively to the electrical machine 1 and to the clamp 12.
• Figure 2 is similar to Figure 1 in that it shows an electrical machine 1 having three second electrical conductors 4 which are electrically interconnected with a grounding cable 3, using the same electrical interconnection device 5.
• Figure 2 differs from Figure 1 in that the three second electrical conductors 4 have a second predetermined section distinct from that of the three first electrical conductors 2, and are each provided at least at one free end opposite to the electrical machine 1, d 'a stripped portion (not shown). These are the first so-called bare electrical conductors 2.
• the three second electrical conductors 4 are provided with tubular lugs instead of being stripped.
• the second stripped electrical conductors 4 illustrated in FIG. 2 are mechanically and electrically secured to the terminal block 6 of the electrical interconnection device 5, using the clamping members 7 which are interconnected by the connecting member 8, itself mechanically secured by its first end 8 on the side 9 of the terminal block 6.
• the second electrical conductors 4 stripped of Figure 2 are here mounted on the front of the terminal block 6.
• the assembly formed by the electrical interconnection device 5, a portion of the three second electrical conductors 4 secured to the terminal block 6 and a portion of the earthing cable 3 also secured to the terminal block 6, can also be introduced into a waterproof bag.
• FIG. 3 shows in more detail the earthing cable 3 to which is mechanically secured by its first end 10 the electrical interconnection device 5 and by its second end 11 the clamp 12. Neither the first electrical conductors 2 nor the second electrical conductors 4 are not shown in figure 3.
• the earthing cable 3 is provided at its first end 10 with a first terminal 13 and, at its second end 11, with a second terminal 14.
• the first terminal 13 of the cable 3 is mechanically secured to the side 9 of the terminal block 6 of the device 5 using a fixing member 17, of the type here fixing screw.
• the connecting member 8 which is itself mechanically secured to each of the clamping members 7, two of which are mounted on a top face 15 of the terminal block 6 and one is mounted on an underside 16 of terminal block 6.
• the second thimble 14 of the cable 3 is mechanically secured to a body 25 of the clamp 12 by a screw-nut system 18.
• the vice-gripper 12 is provided with a vice jaw 21 and a mounting tab 24 which each project from the body 25 and which define between them a clamping space 23 configured to receive, for example, a setting stud. earth or a main earth cable (not shown).
• the vise grip 12 is further provided with a clamping mechanism 20 having a crank configured to rotate a threaded rod mounted through the mounting tab 24, and a complementary jaw 22 attached to the end of the rod. threaded of the mechanism 20 and disposed opposite the vice jaw 21 in the clamping space 23.
• the actuation of the clamping mechanism 20 via its crank makes it possible to clamp the stud or the main earthing cable between the vice jaw 21 and the complementary jaw 22 for the electrical interconnection with the earthing cable. earth 3 secured to the clamp 12.
• the earthing cable 3 can be provided with a marking system 19, formed for example by a support mounted on the cable and a label fixed on the support or directly with a label having tabs and being attached to the cable.
• a marking system 19 formed for example by a support mounted on the cable and a label fixed on the support or directly with a label having tabs and being attached to the cable.
• the electrical interconnection device 5 will now be described in more detail with reference to FIGS. 5 to 9.
• the terminal block 6 of the device 5 comprises a main body 30 here generally tubular.
• the connecting member 8 has at a first end 27 a main attachment area 25, here in the form of a collar, for its mechanical attachment to the side 9 of the terminal block 6.
• the main attachment zone 25 engages around a groove 33 formed in the main body 30 of the terminal block 6 and here forming a contact washer 34, adjacent to the groove 33, for securing the first terminal 13 of the cable 3 via its fixing member 17.
• a threaded hole 35 is made in the main body 30 of the terminal block
• the connecting member 8 further comprises other attachment areas 26 to which the clamping members 7 are mechanically connected.
• FIG 4 two attachment areas 26 are shown mechanically connected to two clamping members 7 on the top face 15 of the terminal block 6, while an attachment area 26 is shown free (then that a clamping member 7 is on the side of the underside 16 of the terminal block 6).
• the connecting member 8 thus forms a link, for example made of plastic and insulated, making it possible in particular to make the clamping members 7 attached to it captive.
• First orifices 28 are formed in the main body 30 and open here through the top faces 15 and below 16 of the terminal block 6, and second orifices 29 are made in the main body 30 and open here through the end faces and rear of terminal block 6.
• the first holes 28 and the second holes 29 meet in the main body 30 of terminal block 6.
• first orifices 28 and the second orifices 29 are formed substantially at right angles to each other in the main body 30 of the terminal block 6.
• the first orifices 28 and the second orifices 29 are here distributed longitudinally on the main body. 30 of terminal block 6.
• Reception areas are provided on terminal block 6 to accommodate the first and / or second electrical conductors 2 and 4.
• these reception areas are formed on the main body 30 of the terminal block 6, facing the first orifices 28, and the first lugged electrical conductors 2, with flat lugs, can be received by resting on these reception areas.
• the first orifices 28 are through so that the reception areas of the first lugged electrical conductors 2 are formed on the top face 15 and / or on the underside 16 of the terminal block 6.
• the clamping members 7 can be introduced by one side or another of these first orifices 28, in other words by the top face 15 or by the underside 16 of the terminal block 6.
• the first holes 28 may have a threaded portion for the screw mounting of the clamping members 7.
• the receiving areas are formed by the main body
• the second orifices 29 pass through so that the second bare electrical conductors or with tubular lugs 4 can be introduced through the front face 31 or through the rear face 32 of the terminal block.
• Footprints 36 are made here on the front and rear faces 31, 32 of the main body 30 of the terminal block, around the second orifices 29.
• the tightening of the first and / or second electrical conductors 2, 4 is always carried out with the clamping members 7 introduced into the first holes 28.
• clamping members 7 are configured to be introduced into the first orifices 28 of the main body 30, by its top face 15 or by its bottom face 16.
• Each clamping member 7 thus makes it possible to attach to the terminal block 6 a first electrical conductor 2 or a second electrical conductor 4 and electrically interconnect it for its earthing.
• the clamping members 7 are provided with an actuating portion 37 which is intended to remain outside the main body 30 of the terminal block 6, and with a clamping portion 38 intended to be at least partially introduced into a first orifice 28 respective.
• the clamping portion 38 may be formed of a threaded rod intended to be screwed into the threaded portion of a respective first hole 28.
• the actuating portion 37 is here a gripping portion provided with a handle 39 electrically insulated from the tightening portion 38.
• the handle 39 is formed from a block of plastic material and is overmolded on the actuating portion 37.
• the clamping members 7 are furthermore each provided with an interface piece 40 disposed between the actuating portion 37 and the clamping portion 38.
• the interface part 40 may have the general shape of a nut, and is provided with a fixing collar 41 facing the actuating portion 37 and with a bearing face 42 from which the clamping portion protrudes. 38.
• the interface part 40 can be fixed to the actuating portion 37 and therefore to the handle 39, for example by gluing, or by welding or by screwing or by any other fixing means.
• Each attachment area 26 of the connecting member 8 is here for example in the form of a collar and is configured to engage around the attachment flange 41 of the respective interface part 40, between the actuating portion 37 and the clamping portion 38 of the respective clamping member 7.
• the clamping members 7 keep the possibility of being free in rotation with respect to the attachment zones 26 of the connecting member 8 so as to be introduced and screwed into the first orifices 28.
• the device 5 allows, thanks to to the attachment zones 25 and 26 provided on the connecting member 8, to facilitate the positioning of the clamping members 7 in the first receiving holes 28 and resting against the flat lugs of the first electrical conductors 2 located at the level of the reception areas on the top face 15 or on the underside 16 of the terminal block 6, or else resting on the stripped ends or against the tubular lugs of the second electrical conductors 4 located in the second orifices 29.
• the device 5 facilitates the establishment of an electrical interconnection with the first and / or second electrical conductors 2, 4 with a view to their earthing.
• a clamping member 7 can only secure one conductor at a time, either a first electrical conductor 2 placed on a first orifice 28, or a second electrical conductor 4 introduced into a second orifice 29.
• the device 5 is used to interconnect similar conductors and the clamping members 7 secure these conductors, either first electrical conductors 2 each placed on a first orifice 28, or second electrical conductors 4 each introduced into a second orifice 29.
• the device 5 it is possible to use the device 5 to secure different types of conductors, for example with two clamping members 7 which secure two first electrical conductors 2 each placed on a first orifice 28 and another clamping member 7 attached to a second one. electrical conductor 4 introduced into a second orifice 29; or rather with a clamping member 7 which secures a single first electrical conductor 2 placed on a first orifice 28 and two other clamping members 7 which secure two second electrical conductors 4 each introduced into a second orifice 29.
• the method comprises the steps below.
• first electrical conductors 2 with flat lugs they are placed resting on the receiving areas of the terminal block 6. For example, two are placed on the top face 15 in front of the first holes 28 and another is placed on the underside 16 in front of another first orifice 28, clamping members 7 suspended by the attachment zones 26 of the connecting member 8 are gripped by the respective handles 39 and the clamping portions 38 are introduced into the through flat terminals and screwed into the first holes 28 at the level of the top face 15 or the bottom face 16 (depending on the positioning of the conductor), with the support faces 42 of the interface pieces 40 from which the clamping members 38 protrude which bear tightly against the flat lugs of the first electrical conductors 2 and allow electrical interconnection.
• the second electrical conductors 4 stripped or with tubular lugs they are introduced into the second orifices 29.
• Clamping members 7 suspended by the attachment zones 26 of the connecting member 8 are gripped by the clamps.
• respective handles 39 and the clamping portions 38 are introduced and screwed into the first holes 28 at the level of the top face 15 or the bottom face 16.
• the clamping portions 38 bear against the stripped or thimbled ends of the second respective conductors 29, at the junction between the respective first and second orifices 28, 29, and allow the electrical interconnection.
• the fact of being able to arrange the clamping members 7 on the top face 15 and on the underside 16 of the main body 30 makes it possible to have a particularly compact terminal block.
• the main body of the terminal block may have more or less first and / or second orifices.
• the main body of the terminal block may have a shape other than tubular, for example square.
• the device may have more or less clamping members.
• the ground wire can be secured on the other side of the terminal block, opposite the groove for the main attachment area of the linkage.
• the main attachment area of the link member can be secured to the terminal block via a screw type fastener or be glued rather than mounted in a groove.
• the vise grip can be replaced by an elastic clip, for example an alligator clip, or an earth vise with a lockout padlock or even a micro-clip.
• the actuation portions may not have a gripping handle but rather have, for example, screw heads that can be actuated with a tool.
• the clamps can be devoid of an interface piece but instead have a flange formed directly at the junction between the actuating portion and the clamping portion.

Landscapes

• Connections Arranged To Contact A Plurality Of Conductors (AREA)
• Distribution Board (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=71094562

Family Applications (1)

Country Status (3)

Family Cites Families (4)

• 2020
  • 2020-04-17 FR FR2003889A patent/FR3109477B1/fr active Active
• 2021
  • 2021-04-16 EP EP21717938.1A patent/EP4136710A1/de active Pending
  • 2021-04-16 WO PCT/EP2021/059988 patent/WO2021209626A1/fr unknown

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