EP3707779A1 - Elektrische verbindungsvorrichtung für ein elektrisches gerät und verbindungsverfahren mit dieser vorrichtung - Google Patents

Elektrische verbindungsvorrichtung für ein elektrisches gerät und verbindungsverfahren mit dieser vorrichtung

Info

Publication number
EP3707779A1
EP3707779A1 EP18814865.4A EP18814865A EP3707779A1 EP 3707779 A1 EP3707779 A1 EP 3707779A1 EP 18814865 A EP18814865 A EP 18814865A EP 3707779 A1 EP3707779 A1 EP 3707779A1
Authority
EP
European Patent Office
Prior art keywords
housing
connection pad
connection
housings
clamping
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.)
Granted
Application number
EP18814865.4A
Other languages
English (en)
French (fr)
Other versions
EP3707779B1 (de
Inventor
Roger Dumont
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.)
Socomec SA
Original Assignee
Socomec SA
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 Socomec SA filed Critical Socomec SA
Publication of EP3707779A1 publication Critical patent/EP3707779A1/de
Application granted granted Critical
Publication of EP3707779B1 publication Critical patent/EP3707779B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/28Clamped connections, spring connections
    • H01R4/38Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44Clamping areas on both sides of screw
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/28Clamped connections, spring connections
    • H01R4/38Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/46Clamping area between two screws placed side by side

Definitions

  • the present invention relates to an electrical connection device for an electrical appliance, this device comprising a connection pad and two fixing flanges, including an upper fixing flange and a lower fixing flange, arranged on each side of the connection pad and arranged for fixing at least one conductor on said connection pad.
  • the invention also relates to a connection method for electrical apparatus, in which at least one conductor is fixed to a connection pad by means of a fastening flange.
  • connection pads which are coupled to internal electrical contacts.
  • the connection areas leave the housing of said devices by faces, to allow to connect conductors ensuring arrival and departure of current.
  • connection pads are flat and traversed by a fixing hole. They are supplemented by accessories, or connection kits, in which is fixed the stripped end of said conductors. These accessories are superimposed on said connection areas to be fixed via the through hole.
  • a connection pad may receive a number of conductors greater than one and for example two, four, or six, which may be in the form of single or multi-strand cables of diameters identical or different, or flat busbars.
  • the clamping force is not the same depending on the type of conductor considered (single-stranded cable, multi-stranded cable, bar).
  • the tightening needs to be checked periodically to compensate for the accidental maladjustment due to the fatigue of the fasteners, and the vibrations generated for example in the event of a short circuit.
  • JP S50 26388 U proposes a solution making it possible to connect on the same connection pad a main conductor and two bypass conductors parallel to each other, by means of two fixing clamps arranged on either side of the connection pad and each provided with dedicated clamping screws, a total of three screws to tighten for three conductors, which does not solve the whole problem.
  • the present invention aims to overcome these disadvantages by proposing a new compact connection device because it offers significant space saving in electrical cabinets, ergonomic, user friendly, easy and quick to implement thanks to the few components to screw, versatile to be able to answer several configurations of connection, multifunction because it makes it possible to add functionalities, reliable and secure because of an automatic compensation of the tightening in the event of fatigue or vibrations.
  • the invention relates to a connecting device of the kind indicated in the preamble, characterized in that each fastening flange comprises two open and parallel indentations, in that said connection pad has on each of its faces two open-ended cavities and parallel, opposed to the fingerprints of said fixing flanges for delimiting between said fingerprints four housings for conductors, including two lower housings and two upper housings, and in that said clamping means are through and arranged to pass through the assembly formed by superposition of the upper fastening flange, the connecting flange and the lower fastening flange, and comprise a bearing abutment disposed between the connecting flange and one of the fastening flanges so said clamping means make it possible to differentiate the clamping between at least the two lower housings and the two upper housings, or conversely.
  • the through clamping means may comprise a single central tie rod.
  • the fixing flanges and the connection pad comprise a single central through hole disposed between the parallel impressions to receive said single central tie rod, and said single central tie rod comprises said support stop so that said clamping means allow to differentiate the clamping between the two lower housing and the two upper housing.
  • the through clamping means may comprise two lateral tie rods.
  • the fastening flanges and the connection pad comprise two through-holes arranged outside the parallel cavities, to each receive a lateral tie, and said lateral tie rods each comprise a bearing stop so that said means for tightening makes it possible to differentiate the tightening between the four housings.
  • the single central tie rod or the lateral tie rods advantageously comprise a shoulder forming said abutment stop disposed between said connection pad and the upper attachment flange. They are preferably threaded at least on two end sections, including an upper section and a lower section, the lower section cooperating with a tapping provided in the lower flange, the upper section cooperating with a clamping nut, and said upper section. having an axial imprint for a tool.
  • the through clamping means may further comprise a central rod parallel to said lateral tie rods.
  • the fixing flanges and the connection pad further comprise a third through hole arranged between the parallel impressions to receive said rod.
  • said central rod has a thread at least on a lower end section arranged to cooperate with a thread provided in the lower fastening flange so as to tighten the four housings simultaneously.
  • the tapping provided in the lower fastening flange may advantageously consist of a captive nut housed in a corresponding recess of said lower fastening flange.
  • the connecting device may comprise a cover fixed to the lower fixing flange for retaining said captive nut.
  • the connecting device comprises return means arranged between the fixing flanges and the connection pad to keep said housings open when the clamping means are not tight.
  • return means may comprise two return members disposed around said single central tie rod or said central rod between respectively the connection pad and each of the fastening flanges. They may comprise four return members arranged in pairs around the lateral tie rods respectively between the connection pad and each of the clamps. They may finally comprise a single return member disposed around the central rod between the fastening flanges and freely passing through the connection pad.
  • At least the upper attachment flange comprises a countersink whose depth corresponds at least to the thickness of said bearing abutment or said compressed return member.
  • connection pad may consist of a one-piece piece, or of two parts symmetrical with respect to a median plane parallel to the fastening flanges, including an upper piece and a lower piece each comprising two of the four parallel footprints.
  • connection pad may be arranged to receive between its two parts a flat conductive bar.
  • the invention also relates to an electrical appliance comprising an electrical connection device as defined above in which the connection pad is an integral part of said electrical appliance.
  • connection method for which a first connecting device is used, the through-clamping means of which comprise a single central tie rod, and in which the following steps are chronologically carried out. connect four conductors:
  • a first conductor is positioned in one of the lower housings, said first housing,
  • the single central tie rod is screwed by means of a first tool engaged with the axial recess, to bring the lower fastening flange closer to the connection pad and to clamp only said first and second conductors in said first and second housings ,
  • a third conductor is positioned in one of the upper housing units, said third housing,
  • a fourth conductor is positioned in the other upper housing said fourth housing
  • the central tie is screwed only by means of a second tool engaged with the clamping nut to bring the upper fastening flange closer to the connection pad and tighten only the third and fourth conductors in said third and fourth housings .
  • connection method for which a second connection device is used, the clamping means of which traverses comprise two lateral tie-rods, and in which the following steps are chronologically performed to connect four conductors:
  • a first conductor is positioned in one of the lower housings, said first housing,
  • the lateral tie rod located on the side of the first housing is screwed by means of a first tool engaged with the corresponding axial recess to bring the lower fixing flange closer to the connection area on the side of the said first housing and to tighten only said first conductor in said first housing,
  • the lateral tie rod located on the side of the second housing is screwed by means of the said first tool engaged with the corresponding axial cavity to bring the lower fastening flange closer to the connection pad on the side of the said second housing and to tighten only the said second conductor in said second housing,
  • a third conductor is positioned in one of the upper housing units, said third housing,
  • the lateral tie rod located on the side of the third housing is screwed by means of a second tool engaged with the corresponding clamping nut to bring the upper fastening flange closer to the connection pad on the side of said third housing and tighten only said third conductor in said third housing,
  • a fourth conductor is positioned in the other upper housing said fourth housing
  • connection method can be completed by screwing the central rod with a third tool formed by a torque wrench to simultaneously tighten the four conductors in their housings.
  • the invention achieves the goals set by the use of the connecting device as defined below to connect a number of conductors greater than or equal to one and less than or equal to six, these conductors may have different diameters between the lower dwellings and the upper dwellings.
  • This connection device can also be used to connect a busbar. It can also be used as a current distributor.
  • FIG. 1 is a perspective view of an electrical apparatus equipped on one of its poles with a connection device according to the prior art, and on the other pole with a connection device according to the invention, showing the differences between the two technologies
  • FIG. 2 is an exploded view of the connection device according to the invention of FIG.
  • FIG. 3 is a detailed view of a tightening tie rod of the connection device of FIG. 2,
  • Figures 4 to 11 are perspective views of the connection device of the invention in different connection configurations detailed in the description, and Figures 12 to 17 are views in axial section of the connecting device of the invention showing the different steps of the method of connecting four conductors. Illustrations of the invention and different ways of making it:
  • FIG. 1 makes it possible to clearly illustrate the differences in design between a connection device 1 according to the prior art and a connection device 10 according to the invention, and the results obtained in particular in terms of ergonomics for accessing the screws of fixing, user-friendliness as to the number of fastening screws to screw, and congestion in an electrical cabinet (not shown), in accordance with the disadvantages of the state of the art and advantages of the invention described above.
  • These two connection devices 1, 10 are illustrated side by side and each equip a pole P1, P2 of an electrical appliance 2 of the switch type, circuit breaker, or any other electrical device requiring a power supply. They each comprise four housings L1, L2, L3, L3 (jointly or individually L) for connecting four conductors C1, C2, C3, C4 (not shown, referred to jointly or individually C).
  • the connecting device 1 of the prior art has a flat connection area 3 which comes out of a wall 4 of the housing 5 of the electrical appliance 2, and an accessory 6, in the form of a two-level staircase, attached and attached to the connection area 3 by a fixing screw 7.
  • the accessory 6 comprises four housings L, including two lower housings L1, L2 at the first level which cooperate with two fixing screws 7, and two upper housings L3, L4 at second level which cooperate with two other clamping screws 7.
  • the connection of four conductors C therefore requires to screw five fixing screws 7, the two of the lower level located at the rear of the upper level may be more difficult to access.
  • the connecting device 10 of the invention comprises a connection pad 11 which leaves a wall 4 of the housing 5 of the electrical appliance 2, and two fixing flanges 12, 13, including an upper fixing flange 12 and a lower fixing flange 13, arranged on each side of the connection pad 11 and retained by through clamping means.
  • the terms "upper” and “lower” used in the description are in relation to the vertical position of the device shown in the figures, which is not necessarily the actual position of its use, these terms not to be interpreted in a sense restrictive.
  • the fastening flanges 12 and 13 consist of identical parts, making it possible to simplify the manufacture, without this exemplary embodiment being limiting.
  • the traversing clamping means comprise, in the example shown, three threaded rods common to the two fastening flanges 12, 13, of which two identical ones called lateral tie rods 14 and a central rod 15, which are parallel, aligned, on the same level and thus easily accessible.
  • the connection of four conductors C therefore requires only the three threaded rods which pass through the entire connection device 10 to be screwed in.
  • the connection device 10 of the The invention is designed to facilitate the connection operation since it makes it possible to differentiate the tightening of the conductors C, housing by housing L, by selectively tightening the two lateral tie rods 14, then the central rod 15.
  • the operator can thus put in place one conductor C after the other, by tightening or at least pre-tightening each conductor C in its housing L before setting up the next, thus reducing the difficulty of the operation.
  • the exemplary embodiment illustrated corresponds to the preferred form of the invention, but is not the only one possible. Indeed, the two lateral tie rods 14, without the central rod 15, or a Single central pull 14 could be sufficient to allow the invention to solve the problem posed.
  • the electrical connection device 10 illustrated in FIGS. 1, 2 and 4 to 10 is an equipment part of an electrical appliance 2, while the electrical connection device 120 illustrated in FIG. 11 is used alone, not connected to a electrical apparatus, as a current distributor between for example a power supply network and one or more electrical appliances 2. These examples show the flexibility of use of said device.
  • connection pad 11 consists of a single piece connected to the electrical apparatus 2, while the Fastening flanges 12, 13 are removable parts and reported on the connection pad 11.
  • These three parts (connection pads 11 and clamps 12, 13) have a general shape which is part of a rectangular parallelogram, without this form is not limiting, and each comprise three through holes 16, aligned and regularly distributed, preferably smooth holes, to allow the passage of the lateral rods 14 and the central rod 15.
  • These parts have the function of conducting the current and are therefore made of an electrically conductive material, such as, for example, aluminum, copper, an alloy of these materials.
  • the fastening flanges 12, 13 further include on their side facing the connection pad 11 two parallel and outgoing cavities 17, and the connection pad 11 has on each of its faces opposite the fastening flanges 12, 13 same indentations 17 open and parallel opposed to the footprints 17 of the clamps 12, 13 to delimit between each pair of opposite cavities 17 a housing L passing through a conductor C, a total of four housings L1, L2, L3, L4 for four conductors C1, C2, C3, C4, including two upper housings L3, L4 and two lower housings L1, L2 (see Figures 12-17).
  • the number of housing units L Four are provided, which allows a symmetrical distribution up / down, right / left, and a differentiated housing-by-housing clamping as explained below.
  • the length of the housing L corresponds to the depth of the connecting device 10 and defines the clamping length of the conductors C which is standardized for a given tightening torque depending on the type of cable and its material.
  • These cavities 17 have in the example shown a generally semi-cylindrical recessed shape, making it possible to form substantially cylindrical housings L corresponding to the circular section of the majority of the conductors C.
  • the diameter of these housings L is self-supporting. adaptable and thus compatible with several diameters of conductors C, since they consist of two opposing half-cylinders whose spacing is adjustable by the clamping means therethrough.
  • the semi-cylindrical shape of the housing L is of course not limiting and extends to any other form compatible with the shape of the conductors C to be connected.
  • the impressions 17 may be coated with a material promoting electrical contact, such as for example silver or the like.
  • the indentations 17 may further comprise a structured surface state to increase their anchoring capacity between the bare metal part of the conductor C and the housing L during tightening in order to prevent the extraction of the conductor C from the housing L by traction .
  • This structured surface state can be achieved by a relief obtained by striations, a grid, pins, or any other design having the same technical effect.
  • the purpose of the through clamping means is to maintain the clamps 12, 13 on the connection pad 11 on the one hand in a passive position in which the housings L are open and empty (see FIGS. 11 and 12), and secondly in an active position in which the housings L are closed on conductors C with a sufficient clamping force to secure the conductors C to the connecting device 10.
  • This clamping force is normally adjusted to a normalized value, for example using a torque wrench.
  • the lateral rods 14 of the clamping means comprise a cylindrical rod provided with a shoulder between its lower and upper ends, this shoulder forming a bearing abutment 18 arranged to be arranged.
  • the lateral tie rods 14 are threaded at least on their two end portions, including an upper section 19 and a lower section 20, without this example being limiting, these threads being able to extend as far as the abutment stop 18.
  • the upper section 19 is arranged to cooperate with a clamping nut 21 via a washer 22, which may advantageously be a spring washer Belleville type to automatically compensate for dimensional changes due to thermal expansion.
  • the lower section 20 cooperates with either a tapping provided in the lower flange 13 (not shown) or with a captive nut 23 housed in a corresponding recess 24 (see Fig. 12) of the lower fastening flange 13, in accordance with FIG. example shown.
  • the upper portion 19 further comprises an axial recess 25 arranged to cooperate with a first tool 26 (see Fig. 13), provided for example with a hexagon Allen key-type bit, without this example being limiting.
  • the clamping nut 21 is arranged to cooperate with a second tool 27 (see Fig. 15), provided for example with a hexagon socket, without this example being limiting.
  • the shape of the axial recess 25 and that of the clamping nut 21 are not restricted to those shown and can extend to any other form adapted to the tools used.
  • the central rod 15 of the clamping means comprises a cylindrical rod terminated at its upper end by a head 28 which bears on the upper flange 12 via a washer 22, preferably a Belleville type washer, as for the lateral tie rods 14.
  • the head 28 is for example hexagonal to cooperate with a third tool 29, provided with a hexagon socket, without this example is not limiting. It is threaded at least on its lower section 30, without this example being limiting, this thread being able to extend to the head 28.
  • the lower section 30 cooperates with either a tapping provided in the lower flange 13 (not shown) or with a captive nut 23 housed in a recess 24 (see Fig. 12) corresponding to the lower fastening flange 13, as for the lateral tie rods 14.
  • the connecting device 10 further comprises return means disposed between the clamps 12, 13 and the connection pad 11 to automatically maintain the open housing L when the clamping means are not tight (see fig. 1, 8, 10, 11 and 12 to 15), thus facilitating insertion of the conductors L into said housings L.
  • the return means as illustrated in the figures comprise two return members 31, of helical spring type without that this example is not limiting, arranged around the central rod 15 between respectively the connection pad 11 and each of the clamps 12, 13 ( Figure 2).
  • the two return members 31 may be replaced by a single return member disposed around the central rod 15 between the two fastening flanges 12, 13, and passing freely through the connection pad 11.
  • the fastening flanges 12, 13 each comprise three countersinks 32, the depth of which corresponds at least to 1 the thickness of the bearing abutment 18 and the return member 31 compressed to avoid the realization of a hyperstatic assembly that would prevent proper tightening of the conductors C in their housing L.
  • the two countersinks 32 side of the fastening flange 12 are provided to fully accommodate the bearing abutment 18 of the lateral rods 14 when they are screwed and the upper housings L3 and L4 are empty (see fi 4) allowing the upper fastening flange 12 to bear on the connection pad 11.
  • the central countersink 32 of the upper and lower fastening flanges 13 is provided for axially positioning the return member 31 corresponding, and to completely accommodate said return member 31 as well as the abutment 18 when the upper housing L3, L4 are empty.
  • the clamps 12, 13 are identical and interchangeable. This is the reason why they have the same recesses 24 and the same counters 32, even if they are not useful according to the position in which they are used.
  • the connection pad 11 is symmetrical with respect to a median plane parallel to said clamps 12, 13 to be reversible.
  • the connecting device 10 also comprises a cover 33 fixed to the lower attachment flange 13 for retaining the captive nuts 23 (FIG. 2).
  • This cover 33 has three smooth through holes 16 in the extension of the through holes 16 of the clamps 12, 13 and the connection pad 11 to receive the end of the lower sections 20, 30 of the lateral rods 14 and the central rod 15 (see Fig. 12).
  • the cover 33 is fixed to the lower fastening flange 13 by two clips 34 in opposition and engaged with an outer flange 35 provided on the corresponding faces of said flange.
  • any other reversible attachment means may be suitable.
  • FIG. 4 shows the connection of two single conductors C1, C2 of the same diameter, in the two lower housings L1, L2, leaving the upper housings L3, L4 vacant.
  • This configuration shows that after tightening the lateral tie rods 14 and the central rod 15, the upper fastening flange 12 bears tightly on the connection pad 11 while the lower fastening flange 13 is tightened on the stripped ends of the conductors.
  • C1, C2 leaving a gap with the connection pad 11.
  • Figure 5 shows the connection of four C1, C2, C3, C4 conductors of the same diameter, in the four slots L1, L2, L3, L4.
  • connection pad 11 has three threaded holes 38 parallel to one another, perpendicular to the through holes 16, including two side holes and a central hole.
  • FIG. 6 shows the connection of four conductors C1, C2, C3, C4 in the four housings L1, L2, L3, L4, the two upper conductors C3, C4 having a diameter smaller than that of the lower conductors C1, C2.
  • This configuration shows that the displacement of the fastening flanges 12, 13 with respect to the connection area 11 may be different in order to adapt the section of the housings L to the diameter of the conductors C.
  • FIG. 7 shows the case where the conductors C arrive from below perpendicularly to the axis of the housings L of the connecting device 10.
  • the same connection device 10 is not used, but a connection device 100 with a bevel gear is designed, by mounting on the connection area 11 coming out of the electrical apparatus 2, an extended connection area 11 '. oriented perpendicularly and fixed by three screws 37 in the three threaded holes 38 of the connection pad 11.
  • the fixing of the four conductors C1, C2, C3, C4 is effected in the same manner. in FIG. 5 by means of the fixing flanges 12, 13 attached to the extended connection pad 11 'with the lateral tie rods 14 and the central rod 15.
  • Figure 8 shows an alternative configuration for connecting more than four conductors and for example six conductors C1, C2, C3, C4, C5 and C6.
  • the same connection device 10 is not used, but an increased connecting device 110 is designed, by mounting on the connection pad 11 coming out of the electrical appliance 2, an extended connection area 11 '. oriented parallel and fixed with the upper attachment flange 12 by three threaded rods 14, 15, which may be constituted by three rods 15, in threads or captive nuts provided in the extended connection range 1 G (but not visible).
  • the fixing of the first four conductors C1, C2, C3, C4 is carried out in the same way as in FIG.
  • the electrical apparatus 2 is supplied not by conductors C in the form of cables, but by a conducting bar B.
  • the connection device 10 is used, in the closed position, c that is to say the lateral tie rods 14 and the central rod 15 screwed to close the housing L, and the corresponding end of the busbar B is fixed by three screws 37 in the three threaded holes 38 on the front face of the beach
  • the conducting bar B may have a width different from that of the connecting device 10.
  • FIG. 11 shows a connecting device 120 used alone, not linked to an electrical appliance, to form a current distributor, without additional room .
  • connection pad 11 consists of two pieces 1a, 1b symmetrical with respect to a median plane parallel to the fixing flanges 12, 13, including an upper piece 1a and a lower piece 1b 1 each comprising two of the four parallel footprints.
  • the two pieces lla, l lb are identical to the clamps 12, 13, to simplify the manufacture, without this embodiment being limiting.
  • the connection area 11 " can thus accommodate between its two parts the end of a flat conducting bar B. The latter must be provided with through holes facing the through holes 16 for the passage of the lateral rods 14 and the rod 15 through the assembly formed by the upper attachment flange 12, the upper part 11a, the conductive bar B, the lower part 1b and the lower attachment flange 13.
  • connection device 10 is empty and the four housings L1, L2, L3, L4 are open thanks to the work of the return members 31 which tend to move the fastening flanges 12, 13 away from the connecting range. 11.
  • the assembly is retained by the central rod 15 and its two supports A1, A2 in opposition, respectively formed by its captive nut 23 in contact with the bottom of the recess 24 of the lower fastening flange 13 , and by its head 28 in contact with the upper face of the upper attachment flange 12 via the washer 22.
  • the lateral tie rods 14 are inactive and each retained by their support A3 formed by their captive nut 23 in contact with the bottom of the recess 24 of the lower fastening flange 13.
  • Figure 13 shows the connection of a first conductor C1 in a first housing L1 located in the lower part of the device.
  • a first tool 26 in engagement with the axial recess 25 of the lateral tie rod 14 located on the left in the figure, the operator screws the lateral tie rod 14 into his captive nut 23 which makes the bearing abutment go down. 18 to come into contact with the connection pad 11 creating a new support A5, causing the lower fixing flange 13 to rise towards the connection pad 11 according to the arrow T1 until clamping the conductor C1 in its housing L1 .
  • the lower clamping flange 13 can swing slightly clockwise around its support Al with the central rod 15.
  • Figure 14 shows the connection of a second conductor C2 in a second housing L2 located in the lower part of the device.
  • the operator screws the lateral tie rod 14 into his captive nut 23 which makes the stop 18 to contact the connection pad 11 creating the same support A5 as before, causing the lower attachment flange 13 to rise towards the connection pad 11 according to the arrow T2 until the driver is tightened.
  • C2 in his home L2.
  • the upper attachment flange 13 slightly tilts counterclockwise around the central rod 15 relative to its through hole 16, eliminating the support A2 of its head 28, for generating a differentiated clamping only at the third housing L3, the first and second housing Ll, L2 remaining tight, and the last housing L4 remaining open.
  • Figure 16 shows the connection of a fourth conductor C4 in a fourth housing L4 located in the upper part of the device.
  • the operator screws the tightening nut 21 on the upper section 19 of the lateral tie rod 14 which goes down to enter contact with the upper attachment flange 12 via its washer 22 forming the same support A6, then drives the upper attachment flange 12 with him towards the connection pad 11 according to the arrow T4 until tighten the conductor C4 in its housing L4.
  • the upper attachment flange 13 slightly rotates clockwise around the central rod 15 relative to its through hole 16, to generate a differentiated clamping only at the level of the fourth housing L4, the other three housing Ll, L2, L3 remaining tight.
  • connection device 10 makes it possible to individually tighten or pre-tighten each conductor C1, C2, C3, C4 in its housing L1, L2, L3, L4, and to complete this assembly by a global safety tightening made in a last step of the connection method according to the invention illustrated in Figure 17.
  • the invention achieves the goals set, namely a simple connection method, practical, ergonomic, efficient, user friendly, can reduce the handling and duration of intervention of the operator , for an optimized result in terms of connection quality, durability of this connection, compactness of the device and a multitude of possible connection options.
  • the present invention is not limited to embodiments described but extends to any modification and variation obvious to a person skilled in the art.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
EP18814865.4A 2017-12-21 2018-12-04 Elektrische verbindungsvorrichtung für ein elektrisches gerät und verbindungsverfahren mit dieser vorrichtung Active EP3707779B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1762748A FR3076098B1 (fr) 2017-12-21 2017-12-21 Dispositif de raccordement electrique pour appareil electrique et procede de raccordement mettant en oeuvre ledit dispositif
PCT/EP2018/083457 WO2019120978A1 (fr) 2017-12-21 2018-12-04 Dispositif de raccordement electrique pour appareil electrique et procede de raccordement mettant en oeuvre ledit dispositif

Publications (2)

Publication Number Publication Date
EP3707779A1 true EP3707779A1 (de) 2020-09-16
EP3707779B1 EP3707779B1 (de) 2021-09-08

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EP18814865.4A Active EP3707779B1 (de) 2017-12-21 2018-12-04 Elektrische verbindungsvorrichtung für ein elektrisches gerät und verbindungsverfahren mit dieser vorrichtung

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US (1) US10892570B1 (de)
EP (1) EP3707779B1 (de)
CN (1) CN111542968B (de)
FR (1) FR3076098B1 (de)
WO (1) WO2019120978A1 (de)

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US11388388B2 (en) 2020-12-01 2022-07-12 Looking Glass Factory, Inc. System and method for processing three dimensional images

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JPS5340703Y2 (de) * 1973-07-02 1978-10-02
US9793619B2 (en) * 2012-05-10 2017-10-17 George Stier Electrical couplers and methods of using them
CN206180132U (zh) * 2016-08-17 2017-05-17 广州番禺电缆集团有限公司 易安装压接牢靠的电表接线夹
CN206022666U (zh) * 2016-08-30 2017-03-15 广东粤创电力科技有限公司 一种配线通用装置

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US10892570B1 (en) 2021-01-12
EP3707779B1 (de) 2021-09-08
US20210013635A1 (en) 2021-01-14
CN111542968B (zh) 2022-01-18
FR3076098B1 (fr) 2020-07-03
FR3076098A1 (fr) 2019-06-28
CN111542968A (zh) 2020-08-14

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