EP0599346B1 - Borne de branchement à phase multiple - Google Patents

Borne de branchement à phase multiple Download PDF

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Publication number
EP0599346B1
EP0599346B1 EP93119129A EP93119129A EP0599346B1 EP 0599346 B1 EP0599346 B1 EP 0599346B1 EP 93119129 A EP93119129 A EP 93119129A EP 93119129 A EP93119129 A EP 93119129A EP 0599346 B1 EP0599346 B1 EP 0599346B1
Authority
EP
European Patent Office
Prior art keywords
terminal according
branch
bolt
contacts
conductors
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.)
Expired - Lifetime
Application number
EP93119129A
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German (de)
English (en)
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EP0599346A3 (fr
EP0599346A2 (fr
Inventor
Georg Czernek
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.)
Arcus Elektrotechnik Alois Schiffmann GmbH
Original Assignee
Arcus Elektrotechnik Alois Schiffmann GmbH
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Publication of EP0599346A2 publication Critical patent/EP0599346A2/fr
Publication of EP0599346A3 publication Critical patent/EP0599346A3/fr
Application granted granted Critical
Publication of EP0599346B1 publication Critical patent/EP0599346B1/fr
Anticipated expiration legal-status Critical
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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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2408—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by clamping screws
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/031—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for multiphase cables, e.g. with contact members penetrating insulation of a plurality of conductors

Definitions

  • the invention relates to a multiphase junction terminal for cables with a plurality of insulated phase conductors running in the longitudinal direction of the cable, with a divided body encompassing the cable, the parts of which can be clamped together and in which main contacts with teeth are arranged in isolated receptacles in corresponding receptacles for penetrating the insulation of the phase conductors, and with clamping parts inserted into the terminal body, which are assigned to the main contacts and are used for connecting branch conductors, first and second pairs of clamping parts for groups of phase conductors and branch conductors being provided in first and second housing halves.
  • Such a branch terminal is known for example from DE-As 23 35 654 and serves to connect connecting cables to a main cable laid in the ground, for example for a so-called house connection.
  • Such connection connections must be possible without cutting the main cable, without interrupting the power supply and without stripping the individual conductors of the main cable.
  • Another requirement is that the security of the connections made must be reliably guaranteed for very long periods of many years.
  • each housing half accommodates a group of two phase conductors and two branch conductors.
  • the two halves of the housing are connected with two screws. These two screws pull the two housing halves against each other, with corresponding teeth on the contact pieces penetrating the insulation of the phase conductor or the neutral conductor and ensuring the electrical connection from the wires of the main cable to the assigned wires of the branch cable.
  • the object of the invention is to provide a branch terminal of the type mentioned, which can be connected in a particularly convenient manner, without requiring specialist knowledge of the fitter, and at the same time ensures a high degree of security in the connections made.
  • the solution according to the invention is that a single through screw is provided as an actuator, which passes through the clamping parts and can be screwed into the other housing half from one housing half; and that between the through-screw and the clamping parts drivers predetermined maximum torque load capacity are provided, which at the same time form temporarily effective stops in the feed direction of the through-screw, so that when the through-screw is tightened, the pairs of clamping parts are first tightened by contacting the branch conductors and only afterwards when the through-screw is advanced the housing halves are tightened against each other while contacting the phase conductors.
  • the task is solved in a satisfactory and surprisingly simple manner, the fitter being able to attach the branch clamp with the single through screw in an advantageous manner so that he essentially passes through the through screw can operate, so that the branch clamp is easy to handle and connect for the fitter.
  • the phase conductors both the actual phase conductors and the neutral conductors are understood here and below
  • the through screw is exactly vertical can usually be found, a position in which the through screw can be positioned and actuated at an angle of less than 45 ° with respect to the vertical.
  • the single through screw is easy to apply and operate and is easily accessible by the fitter even in the cable trench.
  • the drivers expediently consist of positive and / or non-positive complementary pairs of driver parts, in which the driver engagement breaks off when the predetermined maximum torque load capacity is exceeded.
  • both pairs of clamping parts can be tightened first by contacting the branch conductors, whereupon the phase conductors are then contacted.
  • the drivers viewed in the longitudinal direction of the through screw, are arranged one behind the other in different planes, and that the through screw when actuated in a first position, it tightens a first pair of clamping parts until the assigned first driver tears off, then in a second lower position it tightens a second pair of clamping parts until the assigned second driver tears off, and only then in a third position with the second housing half comes into threaded engagement and pulls the housing halves against each other in order to make contact with the phase conductors. This further improves security when making contact.
  • the clamping parts have a threaded bushing or a nut on the through screw, the one component of the threaded bushing or nut on the one hand and the through screw on the other hand having a shear pin, while the other component has a complementary recess.
  • the through screw in the area of the one housing half can have a radially projecting shear pin which engages in a radial groove of a bushing, while the through screw in the area of the other housing half has a radial groove, for example on the end face, which has a corresponding shear pin can be brought into engagement.
  • an insulating hollow wedge which can be driven between pairs of phase conductors lying one above the other and which has a tubular interior as a guide for the through screw, and an insulating transverse wedge which can be received by the hollow wedge transversely to the hollow wedge.
  • the hollow wedge and the cross wedge ensure, in a manner known per se, permanent insulation of the phase conductors from one another when these are struck by the teeth of the main contacts.
  • the hollow wedge also has the function of guiding the through screw of the clamp according to the invention, at least in the central region of the clamp.
  • the hollow wedge and the cross wedge are designed in such a way that they can be easily driven into the space between the phase conductors and at the same time assume a reliable fit between the phase conductors.
  • the through screw expediently has an engagement part at one end for an actuating tool, which engages via a torque limiting device to the shaft of the through screw. This ensures that a predetermined force is also applied to the phase conductors, which ensures reliable contact and ensures defined conditions inside the terminal. Further details of the engagement part of the through screw are explained below and specified in the subclaims.
  • each pair of clamping parts has a movable pressure piece, each with two branch contacts, which, when the through screw is tightened, can be moved in the longitudinal direction at the same time against an abutment formed by the main contacts, around the branch conductors between the main contacts and the branch contacts to clamp.
  • the branch contacts and the main contacts are expediently designed as profile pieces, wherein the opposite sides of the branch contacts and the main contacts can have concave surfaces of complementary shape in cross-section for fixing branch conductors.
  • the main contacts and the branch contacts form continuous channels running between one another in the longitudinal direction of the cable and in the middle there are removable, transverse dividing walls.
  • two branch conductors can be accommodated from opposite sides in each continuous channel.
  • loop-through branch conductors can be accommodated in these channels if the Partitions have been broken out.
  • the dividing walls can also be arranged at the end of the channels in order to serve as a stop for the branch conductors inserted from the opposite side.
  • branch conductors with appropriately stripped ends or non-stripped branch conductors can be connected.
  • the main contacts and / or the branch contacts are provided with teeth or cutting edges on their sides opposite one another with respect to a branch conductor for penetrating insulation on branch conductors.
  • At least one component of the main contact and the branch contact has a concave, in particular an arc-shaped or elliptical, profile on its opposite sides in cross section, this shape being provided for all channels for receiving the branch conductors.
  • the pressure piece is expediently arranged with a certain play transversely to the through screw, so that a pendulum-shaped contact pressure is exerted on the branch contacts. In this way, any tolerances in the dimensions or the spatial position of the conductors can be compensated.
  • the maximum tightening torques for the pressure pieces on the one hand and the housing halves on the other hand can be specified independently of one another, expediently such that smaller forces act on the branch conductors than on the housing halves, with which the phase conductors are finally contacted through their insulation.
  • these maximum torques can be 20 Nm or 30 Nm.
  • the pressure pieces and associated threaded bushings can be designed in various ways and can be in engagement with one another, with corresponding details being apparent the subclaims and the description below.
  • one housing half is provided with a molded thread or a built-in or non-rotatably fastened nut which serves to receive the threaded end of the through screw.
  • the attachment and dimensioning of this nut or thread depends on the spatial conditions and the forces to be applied. Further details can be found in the description below.
  • the thread of the through screw and the associated receiving thread have a smaller diameter than the other components used for clamping conductors through which the through screw passes. This allows the through screw to be carried out easily and is protected against damage at its threaded end.
  • a terminal 10 consists of two housing halves 12 and 14, which have an approximately U-shaped cross-section and are provided with corresponding recesses in their interior in order to accommodate contacts with associated insulation and to store them practically non-rotatably.
  • insulating parts 16 and 18, for example are arranged in the housing halves 12 and 14, into which main contacts 20 with corresponding projections can be inserted non-rotatably.
  • the main contacts 20 have cutting edges or teeth 22 pointing inside the terminal 10 for penetrating insulations on phase conductors to be contacted, which are shown in FIG. 1 as cutting edges.
  • the main contacts 20 are opposite branch contacts 24, which form channels 23 for receiving branch conductors with their opposing concavely curved contact surfaces.
  • Thrust pieces 30 and 32 are T-shaped in cross section and provided with insulating pieces 26 and 28, on which the respective branch contacts 24 sit. The shape of the pressure pieces 30 and 32 ensures a positive fit of the branch contacts 24.
  • Each pressure piece 30 or 32 carries a pair of branch contacts 24, which are opposite a pair of main contacts 20.
  • the upper pressure piece 30 has a through opening 31 and a guide cylinder 33 with a larger diameter for receiving a threaded bushing 34, which has an external thread 38 at its upper end and is seated with its lower end in the guide cylinder 33 of the pressure piece 30 .
  • the external thread 38 of the threaded bushing 34 can be screwed into an internal thread 42 in the upper region of the housing half 12, a recess being provided above the internal thread 42, which forms a receptacle 80 for a spring 78, which consists, for example, of a package of disc springs.
  • the lower pressure piece 32 in FIG. 1 has an internal thread 44 into which a threaded bushing 36 with its external thread 40 can be screwed.
  • the lower end of the threaded bush 36 is cylindrical in shape on the outer circumference and is received by a sleeve 50 which is inserted into a receptacle 52 in the lower housing half 14. This sleeve 50 forms a bearing for the threaded bushing 36.
  • a hollow wedge 54 with an associated transverse wedge 66 can be seen between the two housing halves 12 and 14, which can be plugged into one another and form a cross-shaped insulation between the phase conductors of a cable to be contacted, which is shown in FIG. 4.
  • the hollow wedge 54 has at its lower end a tip 56 which connects to the main body of the hollow wedge 54 via a predetermined breaking point 58.
  • the hollow wedge 54 has vertically extending teeth 64 on its outer circumference for penetrating the insulation of the main conductors, as well as a recess 60 in its central region which serves to receive the transverse wedge 66.
  • a tubular interior 62 of the hollow wedge 54 forms a through opening for a through screw 70 described below.
  • the transverse wedge 66 has outer teeth 68 and, together with the hollow wedge 54, forms a cruciform arrangement for the positioning and insulation of the phase conductors shown in FIG. 4.
  • the transverse wedge can be fork-shaped and inserted into the hollow wedge 54 in lateral recesses 60, which, in relation to FIG. 1, follow one another in a plane transverse to the plane of the drawing lie.
  • the cross wedge 66 can be plate-shaped with a through hole and inserted transversely into the hollow wedge 54 through a central recess in the hollow wedge 54, the arrangement being such that the tubular interior 62 and the through hole of the cross wedge 66 are flush with one another.
  • the shape of the hollow wedge 54 is chosen so that it can be easily driven between superimposed pairs of conductors of the main cable.
  • the breakable tip 56 is provided, which is removed after the hollow wedge 54 has been driven in.
  • the hollow wedge 54 expediently has a shape that tapers towards the ends, for example in the form of the contour of a boat.
  • the through screw 70 can be seen, which has an engagement part 76, a predetermined breaking point 74, a head part 75, a shaft 71 and a threaded end 72 from top to bottom.
  • the counterpart to the threaded end 72 is formed by a nut 82 under the housing half 14.
  • This nut 82 can be non-rotatably attached to the housing half 14, for example can be received in a form-fitting manner.
  • the nut 82 can be replaced by a thread that is cut or embedded in the body of the threaded part 14.
  • a groove 73 can be seen which runs in the radial direction. Such a groove 73 is designed so that it can be brought into engagement with a driver 48 which is attached to the lower threaded bush 36 and is designed for a maximum torque provided.
  • the threaded bushing 34 is equipped with a corresponding driver 46 which can be driven by a counterpart of the through screw 70.
  • the threaded bushing 34 can carry a radially inwardly projecting shear pin which can be brought into drive engagement in a bore 77 of the through screw 70.
  • the drivers between the through screw on the one hand and the threaded bushings 34 and 36 are not limited to this embodiment. Rather, constructive measures are possible in which the threaded bushings have radial grooves which can be brought into engagement with corresponding shear pins of the through screw 70.
  • the drivers can also consist of other positive or non-positive complementary pairs of driver parts, which are in engagement with one another by friction or corrugations, the driver engagement then tearing off or tearing off when a predetermined maximum torque load capacity is exceeded.
  • the through screw 70 has an engagement part 76 in the form of an external hexagon, which can be actuated with a corresponding, attachable wrench.
  • a predetermined breaking point 74 can be provided between the engagement part 76 and the shaft 71 in order to form a torque limiting device.
  • a torque wrench can be used to tighten the through screw 70.
  • the engagement part 76 is provided with an internal hexagon recess, which tears out or expands when a predetermined maximum torque is exceeded.
  • the engagement part 76 can consist of electrically insulating material or be coated with it.
  • the head part 75 on the through screw 70 forms an abutment for the spring 78 and can be provided with an external hexagon, the diameter of which differs considerably from the diameter of the engagement part 76. This ensures that after the attacking part 76 has been torn off, there is no accidental further tightening or loosening of the through screw 70 with the same actuating tool.
  • the head part 75 can optionally be used to open the clamp 10 at a later time with another tool.
  • the pressure pieces 30 and 32 are designed as T-shaped parts which are transverse to the through screw 70 extending bending beams and thus exert an elastic contact pressure on the branch contacts 24. This allows existing tolerances to be compensated for.
  • the threaded bushings 34 and 36 can also have a spherical bearing surface at their ends in order to allow a certain tilting of the pressure pieces 30 and 32 into engagement with the branch conductors to be contacted.
  • the spring 78 in the upper region of the housing half 12 ensures long-term maintenance of the contact pressure, which can decrease without a spring element, for example due to the creeping deformation of aluminum cable conductors or as a result of other setting processes.
  • Fig. 2 shows the clamp of FIG. 1 in the fully assembled state.
  • the hollow wedge 54 without its chipped tip 56 and the transverse wedge 66 are arranged in a cruciform arrangement between phase conductors 84, while branch conductors 88 are clamped between the respective pairs of main contacts 20 and 24.
  • the through screw 70 passes through the aligned through openings of the housing halves 12 and 14, the threaded bushings 34 and 36, the pressure pieces 30 and 32 and the hollow wedge 54 and is screwed with its external thread 72 into a nut 82. The intended maximum torque was reached when the through screw was tightened, so that the engagement part 76 is torn off over the predetermined breaking point.
  • Fig. 1 shows the clamp of FIG. 1 in the fully assembled state.
  • the hollow wedge 54 without its chipped tip 56 and the transverse wedge 66 are arranged in a cruciform arrangement between phase conductors 84, while branch conductors 88 are clamped between the respective pairs of main contacts 20 and 24.
  • the branch contacts 24 and the main contacts 20 are designed as profile pieces and have concave surfaces of complementary shape in cross section on their opposite sides for fixing the branch conductors 88, which are seated in corresponding continuous channels 23.
  • the pressure pieces 30 and 32 with their branch contacts 24 are non-rotatably arranged between adjacent pairs of main contacts 20, so that the branch contacts 24 are moved in the axial direction of the through screw when they are driven by the through screw 70. If the driver 46 or 48 is torn off, the pressure piece remains in the position reached and presses its branch contacts against the respective branch conductors.
  • the inner edges of the main contacts 20 form lateral guides for the branch contacts 24.
  • branch contacts 24 A certain lateral play is provided between the branch contacts 24 and the main contacts 20 for this feed movement, the branch contacts 24 being able to be advanced relative to the main contacts 20 until, in extreme cases, main contact and branch contact 24 abut against each other.
  • branch conductors with very small cable cross sections can also be reliably clamped without changing the design of the terminal 10. It only changes the length of the feed path of the pressure pieces with the corresponding branch contacts.
  • the assembly of such a clamp according to the invention is explained in more detail with reference to FIGS. 5a to 5c.
  • the hollow wedge 54 is first driven in from above between pairs of phase conductors 84 lying one above the other. Then its tip 56 is cut off, so that only the body of the hollow wedge 54 sits between the phase conductors 84.
  • the cross wedge 66 is then inserted between adjacent pairs of phase conductors in the recess 60 of the hollow wedge 54.
  • Fig. 5a also shows the upper half of the terminal 10.
  • the housing half 12 can be seen in which two main contacts 20 opposite branch contacts 24 are arranged.
  • the through screw 70 engages through the through hole in the threaded bushing 34 and the pressure piece 30 and is engaged with the driver 46 with the threaded bushing 34.
  • the lower end of the through screw 70 can now be pushed through the tubular interior 62 of the hollow wedge 54.
  • FIG. 5b shows the upper half of the clamp 10, which is inserted through the hollow wedge 54, with jammed branch conductors 88.
  • the lower housing half 14 of the clamp 10 can be plugged in. It can be seen that in the lower part of the driver 48 is not yet in engagement with the groove 73 at the end of the through screw 70. There are still no branch conductors 88 in the channels 23 of the lower part between the main contacts 20 and the branch contacts 24.
  • 5c shows the next assembly step, the through screw 70 having already applied the corresponding pressure pieces via the threaded bushings, so that the branch conductors 88 are clamped between corresponding pairs of main contacts 20 and branch contacts 24.
  • the through screw 70 has therefore assumed a lower position.
  • the threaded end 72 of the through screw 70 is not yet in engagement with the nut 82, so that the cutting edges or teeth 22 of the main contacts 20 have not yet penetrated the insulations 86 of the phase conductor 84.
  • Fig. 2 shows the finished assembly state, wherein the housing halves 12 and 14 have reached their end position in which the main contacts 20 are engaged with the phase conductors in the required manner. Since the predetermined maximum torque for the engagement part 76 has been reached, it is torn off. The attack part 76 and the tip 56 of the hollow wedge 54 form waste parts which are considered as proof of a proper jamming after completion of the assembly.
  • 6 to 8 show special configurations in the fully assembled state of the clamp according to the invention.
  • FIG. 6 shows a modified special embodiment of the clamp according to the invention.
  • the left part of FIG. 6 shows the situation for a branch conductor 88 with a small cross section, while the right half in FIG. 6 shows the situation for branch conductor 88 with a large cross section.
  • the phase conductors 84 have the same cross sections.
  • a nut 100 can be seen on the upper side of the housing half 12, which nut is in threaded engagement with an external thread 106 of a socket 102.
  • the housing half 12 has a through bore 108, which forms a free passage for the external thread 106 of the bush 102, which has transverse arms 104 in its lower region.
  • the arms 104 carry main contacts 20, while in this case the branch contacts 24 are non-rotatably supported in the housing halves 12 in corresponding receptacles.
  • the housing half 12 forms a pressure part in this case.
  • a bushing 112 can be seen in the lower area of FIG. 6, which has an external thread 116 and an internal thread 44.
  • the component with the projecting arms 114 is provided with an internal thread 42 and carries corresponding main contacts 20.
  • the external thread 116 of the socket 112 engages through a through hole 118 in the housing half 14 into the component with the internal thread 42.
  • connection contacts 24 and the main contacts 20 to improve the contact.
  • the fine-toothed grooving 25 can of course also be provided in the other embodiments of the terminal described above or below, even if these are shown in the drawing is not specifically shown.
  • a first driver 46 is provided between the through screw 70 and the nut 100.
  • the nut 100 is continuously screwed onto the external thread 106 of the socket 102 during assembly, so that the housing part 12 with the connecting contacts 24 is moved against the main contacts 20 and thereby clamps the branch conductors 88 located between them.
  • the through screw 70 engages with the socket 112 and screws the socket 112 into the component with the internal thread 42, so that the branch contacts 24 are moved against their main contacts 20 in the housing half 14, the corresponding branch conductors 88 are clamped.
  • the threaded end 72 of the through screw 70 can engage with the internal thread 44 of the bush 112 and thereby pull the two housing halves 12 and 14 against one another. Depending on the diameter of the branch conductors 88, the through screw 70 emerges more or less from the lower housing half 14.
  • FIG. 7 shows a further embodiment of the clamp according to the invention.
  • main contacts 20 are used in corresponding recesses provided with insulating parts 16 and 18, which are provided with recesses for receiving branch conductors 88.
  • these cutouts have the shape of elongated holes 124, which are provided with openings 126 on the inside facing the through screw 70.
  • the pressure pieces 30 and 32 engage with their possibly angled down arms through these openings 126 into the elongated holes 124.
  • the threaded bushings 34 and 36 are pivotably mounted on the pressure pieces 30 and 32 made of insulating material.
  • the threaded bushings 34, 36 and the pressure pieces 30, 32 have complementary concave and convex contact surfaces in the embodiment in FIG. 7.
  • the threaded bushings 34 and 36 are with their external threads 38 and 40 screwed into corresponding internal threads of the two housing halves 12 and 14 and can be acted upon by the through screw 70 via drivers 46 and 48.
  • the pressure pieces 30 and 32 are formed in one piece with the branch contacts 24 and can be provided with schematically indicated teeth or cutting edges on their contact areas opposite the branch conductors.
  • the right half of FIG. 7 shows the situation for branch conductors 88 with a large cross section, while the left half in FIG. 7 shows the positioning of the parts within the clamp when the branch conductors 88 have small diameters. It can be seen that in this case too, a large number of branch conductors 88 with different cross sections can be clamped with one design.
  • the main contacts 20 have trough-shaped areas in which the branch conductors 88 adjust themselves. If the branch contacts 24 are brought into clamping engagement, the branch conductors 88 cannot undesirably dodge.
  • the main contacts 20 have, in cross section, approximately circular troughs 130 for the self-aligning reception of the branch conductors 88, while the opposite branch contacts 24 have contact areas 132 which are narrower in cross section than the troughs 130.
  • the pressure pieces 30 with their branch contacts 24 can be pushed sufficiently far into the troughs 130 in order to adapt to any conventional cross sections of branch conductors 88.
  • the main contacts 20 are non-rotatably supported with insulating parts 16 and 18 in receptacles of the housing halves 12 and 14.
  • the main contacts 20 for contacting the branch conductors 88 have angular regions with contours that are circular segment in cross section. They lie opposite angular branch contacts 24 with contours of circular segment shape in cross section, the branch contacts 24 being seated on transversely projecting arms of pressure pieces 148 and 158.
  • the thrust pieces 148 and 158 have internal threads 150 and 160 for engagement with corresponding external threads 146 and 156 on threaded bushes 142 and 152.
  • the threaded bushes 142 and 152 are provided at their upper ends with ring flanges 144 and 154, which form stops or supports as is results from Fig. 8.
  • the upper ring flange 144 of the threaded bush 142 sits on the housing half 12 and can be driven by the through screw 70, the threaded bush 142 reaching unhindered through a corresponding recess in the housing half 12.
  • the through screw 70 is actuated, the pressure piece 148 can be moved upward against the branch conductors 88, while the pressure piece 158 can be moved downward against the corresponding branch conductors 88.
  • the conditions for a branch conductor 88 with a small cross section are shown on the left in FIG. 8, while the remaining clamping areas for branch conductors 88 are drawn with large cross sections.
  • the drivers 46, 48 and the groove 73 have the same function as already explained in connection with FIG. 1.
  • the housing halves 12 and 14 are also screwed together in the same manner as already explained in connection with FIG. 1.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Claims (35)

  1. Borne de branchement à phases multiples pour un câble comprenant plusieurs conducteurs de phases (84) isolés et s'étendant dans la direction longitudinale du câble,
    - avec un corps de borne partitionné agrippant la périphérie du câble, parties qui sont susceptibles d'être serrées ensemble et dans lequel sont agencés des contacts principaux (20) isolés les uns des autres dans des cavités correspondantes et munis de dents (22) pour traverser l'isolation des conducteurs de phases (84), et
    - des pièces de borne installées dans le corps de borne qui sont agencées par rapport aux contacts principaux (20) et qui servent à la connexion à des conducteurs secondaires (88),
    borne dans laquelle sont prévues dans des première et seconde moitiés de boîtier (12,14) des première et seconde paires de pièces de borne pour des groupes de conducteurs de phases (84) et de conducteurs secondaires (88),
    caractérisée en ce que
    - il n'est prévu qu'une unique vis traversante (70) en tant qu'organe de commande qui traverse les pièces de borne et qui peut être vissée à partir d'une moitié de boîtier (12) dans l'autre moitié de boîtier (14),
    - et en ce qu'il est prévu, entre la vis traversante (70) et les pièces de borne, des doigts d'entraînement (46,48) de résistance au couple de rotation maximale prédéterminée, ces doigts constituant simultanément des butées à surmonter effectivement dans la direction d'avance de la vis traversante (70),
    de telle sorte que, lors de l'installation de la vis traversante (70), la paire de pièces de borne soit tirée l'une en direction de l'autre, les mettant en contact avec les conducteurs secondaires (88) et que seulement après, lors d'une avance supplémentaire de la vis traversante (70), les moitiés de boîtier (12,14) soient fermement tirées l'une contre l'autre les mettant en contact avec les conducteurs de phases (84).
  2. Borne selon la revendication 1, caractérisée en ce que les doigts d'entraînement sont constitués d'une paire de pièces de doigts d'entraînement complémentaires liées par la forme ou par la force dans laquelle la liaison est rompue lorsque la résistance au couple de rotation maximum prédéterminé est dépassée.
  3. Borne selon la revendication 1 ou 2, caractérisée en ce que les doigts d'entraînement sont agencés dans différentes rainures, l'une derrière l'autre, tel que vu dans le sens longitudinal de la vis traversante (70),
    et en ce que lorsqu'elle est actionnée en une première position, la vis traversante (70) tire la première paire de pièces de borne jusqu'à ce que le premier doigt d'entraînement correspondant (46) se rompe, puis, dans une seconde position plus profonde, tire une seconde paire de pièces de borne jusqu'à ce que le second doigt d'entraînement correspondant (48) se rompe, et seulement après, dans une troisième position, vient en engagement dans le filetage de la seconde moitié de boîtier (14) et tire les moitiés de boîtier (12,14) l'une contre l'autre.
  4. Borne selon l'une des revendications 1 à 3, caractérisée en ce que les pièces de borne présentent un manchon fileté (34,36) ou un écrou engagé sur la vis traversante (70) dans lesquels l'une des pièces de construction, soit le manchon fileté ou l'écrou d'une part et la vis traversante d'autre part, présente une tige susceptible de se rompre (46,48), l'autre pièce de construction présentant un logement complémentaire.
  5. Borne selon l'une des revendications 1 à 4, caractérisée en ce qu'une clavette creuse isolante (54) peut être mise en place entre les paires de conducteurs de phases (84) agencées l'une au dessus de l'autre, et en ce que cette clavette présente un espace interne cylindrique (62) en tant que guide pour la vis traversante (70), et est susceptible de recevoir une clavette transversale isolante (66) pénétrant transversalement par rapport à cette clavette creuse (54).
  6. Borne selon la revendication 5, caractérisée en ce que la clavette transversale (66) se présente sous la forme d'une fourche et peut être installée dans des ouvertures latérales (50) de la clavette creuse (54).
  7. Borne selon la revendication 5, caractérisée en ce que la clavette transversale (66) se présente sous la forme d'une plaque avec un orifice transversal, peut être enfichée perpendiculairement à la clavette creuse (54) dans une ouverture de cette clavette creuse (54) de telle sorte que l'orifice transversal et l'espace interne cylindrique (62) soient en correspondance l'un par rapport à l'autre.
  8. Borne selon l'une des revendications 5 à 7, caractérisée en ce que la clavette creuse (54) reçoit deux clavettes transversales opposées.
  9. Borne selon l'une des revendications 5 à 8, caractérisée en ce que la clavette creuse (54) présente un contour externe en forme de fuselage, se rétrécissant à la fois dans la direction longitudinale des câbles et dans la direction d'insertion de cette clavette creuse (54).
  10. Borne selon l'une des revendications 5 à 9, caractérisée en ce que la clavette creuse (54) présente en son extrémité une pointe (56) reliée avec le corps cylindrique de la clavette creuse (54) par un pont de rupture prédéterminé (58).
  11. Borne selon l'une des revendications 1 à 10, caractérisée en ce que la vis traversante (70) présente en l'une de ses extrémités une partie de préhension (76) reliée à sa tige (71) au travers d'un dispositif de limitation de couple de rotation.
  12. Borne selon la revendication 11, caractérisée en ce que la partie de préhension (76) présente une tête externe à six pans qui est reliée à la tige (71) par un pont de rupture prédéterminé (74).
  13. Borne selon la revendication 11, caractérisée en ce que la partie de préhension (76) présente un orifice interne à six pans qui s'élargit lors du dépassement d'un couple de rotation maximum prédéterminé.
  14. Borne selon l'une des revendications 11 à 13, caractérisée en ce que la partie de préhension (76) est constituée ou revêtue d'un matériau isolant électrique.
  15. Borne selon l'une des revendications 1 à 14, caractérisée en ce que la vis traversante (70) présente sous le pont de rupture prédéterminé (74) une partie de tête (75) également à six pans extérieurs et constituant un appui pour un ressort (78) agencé entre la partie de boîtier (12) et la vis traversante (70).
  16. Borne selon l'une des revendications 1 à 15, caractérisée en ce que chaque paire de pièces de borne présente une pièce mobile d'appui (30,32) avec chacune deux contacts secondaires (24) qui, lors de l'installation de la vis traversante (70), sont simultanément mobiles dans la direction longitudinale de la vis en direction de contre-appui formé en vis-à-vis dans les contacts principaux (20) pour serrer les conducteurs secondaires (88) entre les contacts principaux (20) et les contacts secondaires (24).
  17. Borne selon l'une des revendications 1 à 16, caractérisée en ce que les contacts secondaires (24) et contacts principaux (20) sont réalisés par des pièces profilées.
  18. Borne selon l'une des revendications 1 à 17, caractérisée en ce que les faces situées en vis-à-vis des contacts secondaires (24) et contacts principaux (20) présentent, vues en coupe transversale, des faces complémentaires de forme concave de maintien ferme des conducteurs secondaires (88).
  19. Borne selon l'une des revendications 1 à 18, caractérisée en ce que les contacts principaux (20) et secondaires (24) forment entre eux des canaux traversants s'étendant dans la direction longitudinale des câbles, ces canaux (23) étant composés de parois séparées pouvant être éloignées transversalement.
  20. Borne selon l'une des revendications 1 à 19, caractérisée en ce que les contacts principaux (20) et/ou secondaires (24) sont munis en leurs faces situées en vis-à-vis d'un conducteur secondaire (88) avec des dents (25) pour pénétrer dans l'isolation des conducteurs secondaires (88).
  21. Borne selon l'une des revendications 1 à 20, caractérisée en ce qu'au moins une partie constructive des contacts principaux (20) et secondaires (24) présente en leurs faces opposées en vis-à-vis un profil concave vu en coupe transversale, plus particulièrement un profil en portion circulaire ou en portion elliptique.
  22. Borne selon l'une des revendications 16 à 21, caractérisée en ce que la pièce d'appui (30,32) présente, vue en coupe transversale, une forme en T et présente une collerette flexible s'étendant perpendiculairement par rapport à la vis traversante (70), collerette appliquant une pression d'appui élastique sur les contacts secondaires (24).
  23. Borne selon l'une des revendications 16 à 22, caractérisée en ce qu'une pièce d'appui (32) présente une ouverture traversante pour la vis traversante (70) ainsi qu'un filetage interne (44) susceptible de venir en engagement avec le filetage externe (40) d'un manchon fileté (36) engagé par la vis traversante (70).
  24. Borne selon la revendication 23, caractérisée en ce qu'au moins le manchon fileté (36) de la moitié de boîtier inférieure (14) est installé dans une douille (50) de la seconde moitié de boîtier (14).
  25. Borne selon l'une des revendications 1 à 24, caractérisée en ce qu'une pièce d'appui (30) présente une ouverture traversante (31) pour la vis traversante (70) ainsi qu'un cylindre de guidage (33) de plus grand diamètre pour un manchon fileté (34) dont le filetage externe (38) est engagé dans le filetage de la moitié de boîtier (12), manchon pouvant être actionné par la vis traversante (70).
  26. Borne selon l'une des revendications 1 à 25, caractérisée en ce que l'une des moitiés de boîtier (12,14) constitue une pièce d'appui et porte des contacts secondaires encastrés (24),
    en ce qu'un manchon (102,112) est installé dans un orifice traversant (108,118) des moitiés de boîtier (12,14) et porte en l'une de ses extrémités des contacts principaux (20), et
    en ce que le manchon (102,112) présente en son autre extrémité un filetage externe (106,116) sur lequel est engagé un écrou (100), respectivement une partie constructive (114), susceptible d'être actionnée par la vis traversante (70) et qui appuie chacune des moitiés de boîtier (12,14) en direction des contacts principaux (20).
  27. Borne selon la revendication 26, caractérisée en ce que l'un des écrous est constitué par un manchon (112) qui présente un filetage interne (44) en prise avec le filetage externe (72) de la vis traversante (70).
  28. Borne selon l'une des revendications 1 à 27, caractérisée en ce qu'une moitié de boîtier (12,14) supporte des contacts principaux (20), qui ont en coupe transversale la forme d'un orifice longitudinal (124) avec une traverse (126) du côté interne orienté vers la vis traversante (70),
    en ce qu'une pièce d'appui (30,32) munie de contacts secondaires (24) en l'une de ses extrémités est engagée au travers de la traverse (126) des contacts principaux (20),
    et en ce qu'un manchon fileté (34,36) pouvant être actionné par la vis traversante (70) peut être vissé par son filetage externe (38,40) dans la moitié de boîtier (12,14) en avançant la pièce d'appui (30,32).
  29. Borne selon l'une des revendications 1 à 28, caractérisée en ce que la pièce d'appui (30,32) est elle-même formée d'un seul tenant avec ses contacts secondaires (24) et est électriquement isolée (128) par rapport aux pièces de la borne dirigée vers l'extérieur.
  30. Borne selon l'une des revendications 1 à 29, caractérisée en ce que les contacts principaux (20) ont une forme transversale en crochet ayant la forme d'un C, avec un siège (130) de réception autocentré des conducteurs secondaires (88), et en ce que les contacts secondaires (24) en vis-à-vis présentent des zones de contact (132) qui sont en coupe transversale plus petites que les sièges (130).
  31. Borne selon l'une des revendications 1 à 30, caractérisée en ce que les contacts principaux (20) et secondaires (24) présentent en coupe transversale des zones de forme angulaire avec des contours ayant la forme de segments de cercle, et sont déplaçables les uns par rapport aux autres, réduisant de manière continue l'espace intermédiaire délimité entre eux.
  32. Borne selon l'une des revendications 1 à 31, caractérisée en ce que les contacts principaux (20) et secondaires (24) sont à distance les uns par rapport aux autres dans le sens transversal par rapport à la direction d'avance de la vis traversante (70), et se guident mutuellement les uns en direction des autres.
  33. Borne selon l'une des revendications 1 à 32, caractérisée en ce qu'il est prévu un manchon fileté (142,152) mobile en rotation qui présente un orifice traversant pour la vis traversante (70) ainsi qu'un filetage externe (146,156) avec lequel une pièce d'appui (148,158) est engagée par des filets, et en ce que ce manchon fileté (142,152) peut être actionné par la vis traversante (70) de telle sorte que la pièce d'appui (148,158) soit mobile par rapport au manchon fileté (142,152) en direction des contacts principaux (20).
  34. Borne selon la revendication 33, caractérisée en ce que le manchon fileté (142,152) présente une collerette annulaire (144,154) formant un appui plan ou sphérique, respectivement une butée, et contre laquelle la vis traversante (70) peut être amenée en contact d'actionnement.
  35. Borne selon l'une des revendications 1 à 34, caractérisée en ce que le filetage (72) de la vis traversante (70) et le filetage correspondant de l'ouverture présentent un diamètre transversal plus petit que celui des parties constructives restantes servant au maintien ferme de conducteurs au travers desquels la vis traversante (70) passe.
EP93119129A 1992-11-27 1993-11-26 Borne de branchement à phase multiple Expired - Lifetime EP0599346B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4240001 1992-11-27
DE4240001A DE4240001A1 (de) 1992-11-27 1992-11-27 Mehrphasige Abzweigklemme

Publications (3)

Publication Number Publication Date
EP0599346A2 EP0599346A2 (fr) 1994-06-01
EP0599346A3 EP0599346A3 (fr) 1995-04-05
EP0599346B1 true EP0599346B1 (fr) 1997-07-02

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EP93119129A Expired - Lifetime EP0599346B1 (fr) 1992-11-27 1993-11-26 Borne de branchement à phase multiple

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DE (2) DE4240001A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946885C1 (de) * 1999-09-30 2001-05-23 Arne Karusseit Kabelabzweigklemme
FR2817662B1 (fr) * 2000-12-06 2003-02-21 D App Et De Materiel Electr S Dispositif de jonction de cables isoles multiconducteurs equipe d'une prise de derivation multiconducteurs
DE10341997A1 (de) * 2003-09-03 2005-03-31 Pfisterer Kontaktsysteme Gmbh & Co. Kg Vorrichtung zum elektrischen Verbinden von mindestens zwei isolierten Hauptleitern eines Energieversorgungskabels, insbesondere Kabelabzweigklemme
DE102006037720A1 (de) * 2006-08-03 2008-02-07 Pfisterer Kontaktsysteme Gmbh & Co. Kg Vorrichtung zum elektrischen Verbinden von midestens zwei Hauptleitern eines Energieversorgungskabels, insbesondere Kabelabzweigklemme
EP2871720B1 (fr) * 2013-11-08 2017-06-28 Tyco Electronics Simel S.A.S. Plaque préformée pour connecteur à perforation d'isolant

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1215233B (de) * 1963-10-11 1966-04-28 Pfisterer Karl Abzweigklemme zum gleichzeitigen Verbinden einzelner isolierter Adern eines Mehrleiterkabels mit abisolierten Abzweigleitern
CH557724A (de) * 1972-02-08 1975-01-15 X 4 Corp Drehmomentbegrenzer.
DE2335654B1 (de) * 1973-07-13 1974-08-08 Pfisterer Elektrotech Karl Abzweigklemme
DE2430066C3 (de) * 1974-06-22 1980-10-30 Arcus Elektrotechnik Alois Schiffmann Gmbh, 8000 Muenchen Mehrphasige elektrische Verbindungsoder Abzweigklemme
US4131257A (en) * 1977-11-14 1978-12-26 Eby Company Stacking cable clamp
DE3243384C1 (de) * 1982-11-24 1984-04-19 Minnesota Mining and Manufacturing Co., 55101 Saint Paul, Minn. Elektrische Mehrphasen-Abzweigklemme
DE3246878A1 (de) * 1982-12-17 1984-06-20 Rema Lipprandt GmbH & Co KG, 5300 Bonn Kompaktkabelabzweigklemme
GB8600285D0 (en) * 1986-01-07 1986-02-12 B & H Nottingham Ltd Cable clamps
DE4116876A1 (de) * 1991-05-23 1992-11-26 Arcus Elektrotech Kontaktschraube

Also Published As

Publication number Publication date
EP0599346A3 (fr) 1995-04-05
DE4240001A1 (de) 1994-06-01
EP0599346A2 (fr) 1994-06-01
DE59306839D1 (de) 1997-08-07

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