EP3685471B1 - Connecteur pour courants forts muni d'une douille isolante - Google Patents

Connecteur pour courants forts muni d'une douille isolante Download PDF

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Publication number
EP3685471B1
EP3685471B1 EP18773929.7A EP18773929A EP3685471B1 EP 3685471 B1 EP3685471 B1 EP 3685471B1 EP 18773929 A EP18773929 A EP 18773929A EP 3685471 B1 EP3685471 B1 EP 3685471B1
Authority
EP
European Patent Office
Prior art keywords
current
connector
cable
connection
current connector
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.)
Active
Application number
EP18773929.7A
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German (de)
English (en)
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EP3685471A1 (fr
Inventor
Stefan Schnieder
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.)
Harting Electric Stiftung and Co KG
Original Assignee
Harting Electric GmbH and Co KG
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Application filed by Harting Electric GmbH and Co KG filed Critical Harting Electric GmbH and Co KG
Publication of EP3685471A1 publication Critical patent/EP3685471A1/fr
Application granted granted Critical
Publication of EP3685471B1 publication Critical patent/EP3685471B1/fr
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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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/5025—Bases; Cases composed of different pieces one or more pieces being of resilient material
    • 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
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H01R13/5816—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part for cables passing through an aperture in a housing wall, the separate part being captured between cable and contour of aperture
    • 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
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0521—Connection to outer conductor by action of a nut
    • 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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

  • the invention is based on a high-current connector according to the preamble of independent claim 1.
  • Plug connectors are basically required to reversibly connect electrical lines or connections with one another.
  • connectors and mating connectors are used to establish an electrical and mechanical connection between two electrical conductors or an electrical conductor and a device or an installation.
  • high-current connectors are required to generate a particularly high electrical current of, for example, more than and including 100 amps (A), in particular more than and including 200 A, preferably more than and including 400 A and in particular an electrical current of more than and including 600 A and in some cases possibly even to transmit up to 800 A and more via a high-current contact element belonging to the high-current connector, for example via a pin or socket contact.
  • the high-current plug-in connectors can carry voltages of several thousand volts (V) compared to their ground potential, e.g. at least 2000 V, in particular at least 3000 V, for example 4000 V and more, e.g. up to 4800 V or even more.
  • the ground potential can be applied to at least one cable screw connection of the high-current connector and in particular to an at least partially metallic connector housing for shielding and / or grounding purposes.
  • the pin and / or socket contacts of the high-current connectors can have an outer or inner diameter of more than 1 cm, for example at least 1.5 cm, preferably at least 2 cm, particularly preferably at least 2.5 cm or in some cases even 3 cm and more.
  • the electrical conductors of the high-current cables that are connected to such high-current contact elements can, for example, have a cross-sectional area of at least 70 mm 2 , in particular at least 95 mm 2 , preferably at least 120 mm 2 , particularly preferably 150 mm 2 , for example 185 mm 2 and more. As a rule, these are stranded conductors.
  • Such a stranded conductor can be connected on the cable connection side to the respective connection area of a high-current contact element, for example crimped to a crimp connection or, for example, screwed to an axial screw connection known from the prior art, in order to establish a reliable and low-resistance electrical contact.
  • a high-current contact element for example crimped to a crimp connection or, for example, screwed to an axial screw connection known from the prior art, in order to establish a reliable and low-resistance electrical contact.
  • Such high-current connectors are used, for example, in the railway sector. Applications in power plants, transformer stations, industrial plants and high-current distributions are also common.
  • the DE 20 2006 003 204 U1 shows a connector which is designed as a plug or add-on housing.
  • the connector consists of a connector housing in which an insulating body with electrical contacts is received. The electrical contacts are provided for the connection of electrical lines which are led out of the plug or add-on housing on the rear of the connector.
  • the connector has a connector housing in which a multi-part shield element is arranged.
  • the screen element is used for electrical purposes Contacting a cable shield and electrically connecting the cable shield to the connector housing.
  • the pamphlet WO 2015/185511 A2 discloses an electrical device with a housing which has at least one molded cable inlet connector through which a cable is guided into the interior of the housing, and with a clamping device which is arranged on at least one cable inlet connector and which is fixed to the cable and attached to the housing, wherein the clamping device has two clamping bodies connected to one another, each clamping body having several molded-on clamping ribs, and wherein the clamping ribs of interconnected clamping bodies are interlaced with one another, and wherein the clamping device is arranged at the inlet opening of the at least one cable inlet connector and is attached to the at least one cable inlet connector by latching means .
  • the pamphlet WO 2014/084052 A1 discloses an L-shaped connector with an L-shaped metal terminal which can be reliably connected both electrically and mechanically to a further terminal.
  • a connecting part is formed on a metal clamp, to which the other clamp is connected.
  • the connecting part has a wire metal fitting.
  • a bolt portion is formed on either the terminal metal fitting or the wire metal fitting, and a mating screw hole is formed on the other side of the terminal metal fitting or the wire metal.
  • a tool engaging member is disclosed for rotating the metal clamp.
  • the pamphlet DE 10 2014 112 701 A1 describes a high-current plug contact, the crimping area of which is made of aluminum and the plug area of which is made of copper, in order to avoid electrical problems when connecting a high-current aluminum cable to a high-current copper cable or to reduce a high-current copper contact in the area of the material transition.
  • a form and a function of a high-current plug connector / a high-current contact element are also implicitly explained.
  • the object of the invention is to provide a construction that is as compact as possible for a high-current connector, by means of which the necessary air and creepage distances are maintained at the same time.
  • a high-current connector has a connector housing and a metallic high-current contact element.
  • the high-current connector has a plug-in side and a connection side.
  • the high-current contact element is arranged in the interior of the connector housing.
  • the high-current contact element has a plug-in area and a connection area to which an electrical conductor, in particular a Stranded conductor, an electrical high-current cable can be connected.
  • the electrical high-current cable can be fastened to the connection side of the high-current plug connector by means of a cable fastener, in particular a screwed cable connection.
  • the high-current plug connector has an insulating sleeve fastened or at least fastenable on its connection side.
  • This insulating sleeve is characterized in that it has a hollow cylindrical section at a first end, namely on the cable connection side. Towards an opposite end, namely on the housing connection side, the inner diameter of the insulating sleeve increases, as a result of which the insulating sleeve has a funnel-shaped fastening section on the housing connection side.
  • the high-current cable described below is connected or at least connectable to the high-current plug connector.
  • the current-carrying electrical conductor of the high-current cable is surrounded by insulation.
  • the electrical conductor preferably consists of cable strands, so that it is a stranded conductor and the insulation surrounding it is stranded insulation, which is also referred to as such in the following.
  • the stranded insulation of the high-current cable is normally surrounded by a braided shield, which in turn is covered by an outer sheath.
  • the outer jacket is also preferably formed from an insulating material or has at least one insulating outer layer.
  • the braided shield is then usually bent away from the end of the high-current cable to be connected by 180 ° and can be fastened in the cable fastening, in particular the cable gland, together with the further high-current cable on the preferably at least partially metallic but possibly also electrically insulating connector housing, e.g. screwed, and possibly electrically conductive be connected to it.
  • connection-side end of the high-current cable is ultimately stripped, i.e. the stranded insulation is removed at the connection-side end in order to enable the stranded conductor to be connected to the high-current contact element.
  • the insulating sleeve with its funnel-shaped fastening section can be attached to the connector housing.
  • the insulating sleeve can preferably be insertable into the connector housing with its fastening section.
  • the insulating sleeve can, for example, snap into the high-current connector.
  • the insulating sleeve can be inserted into a negative mold of the insulating sleeve which is molded into the interior of the connector housing.
  • a one-piece design of the connector housing and insulating sleeve is also conceivable. Then the connector housing and the insulating sleeve are produced in a common process.
  • Another possible embodiment consists in snapping the insulating sleeve onto the connector housing, preferably in connection with a rubber and / or plastic seal and / or a rubber and / or plastic overlap.
  • the insulating sleeve with its hollow cylindrical section can be pushed onto the high-current cable, in particular onto its stranded insulation.
  • the insulating sleeve then rests in the stripped area of the high-current cable with its hollow cylindrical section on the stranded insulation and is arranged at least in sections between its braided shield and the stranded insulation.
  • the inner diameter of the hollow-cylindrical section of the insulating sleeve on the cable connection side can correspond to the outer diameter of the strand insulation of the high-current cable.
  • the high-current contact element is intended to transmit high electrical currents and, for this purpose, can in particular also lead to particularly high electrical voltages.
  • the high-current contact element in particular its connection area, is thus a live component of the high-current connector.
  • Another live part is the electrical conductor, in particular the stranded conductor, of the high-current cable.
  • the cable fastening, in particular the cable gland, of the high-current connector and, if applicable, the connector housing, which is preferably at least partially electrically conductive, can, on the other hand, carry ground potential.
  • Another part carrying ground potential is the shield, in particular the braided shield of the high-current cable.
  • the connector housing is not electrically conductive, for example consists of an electrically insulating plastic
  • at least the cable fastening, in particular the cable gland, and the shield attached to it, for example the braided shield of the High-current connector connected electrical high-current cable, are regarded as a mass-carrying part.
  • the two creepage distances can be the same.
  • the two clearances can also be made the same size. Both have the reason that the electric current always seeks the path of least resistance, so increasing the clearance or creepage distance, which is larger anyway, does not make any particular sense from the point of view of dielectric strength.
  • the outer creepage distance runs from the connection area of the high-current contact element over the outer area of the insulating sleeve to the braided shield and / or to the cable fastening, in particular a cable gland that is at ground potential, e.g. by being in electrical contact with the braided shield of the high-current cable.
  • the outer creepage distance can be increased by the shape of a circumferential gradation formed on the outside of the funnel-shaped fastening section.
  • the gradation can be one or more, so two, three, four, five or six or even have even more elevations to extend the outer creepage distance.
  • the aforementioned gradation ultimately increases the outer surface of the insulating sleeve and thus also the distance that a leakage current may have to cover on the outer surface of the insulating sleeve, e.g. to get from the connection area of the high-current contact element to the cable gland / braided shield.
  • at least one, preferably two, of the elevations belonging to the gradation can also be used to fasten the insulating sleeve to the connector housing.
  • the gradation thus consists of at least one circumferential elevation.
  • the gradation advantageously has at least two circumferential elevations, namely a first elevation and a second elevation.
  • the first elevation which is arranged in the direction of the cable connection side of the insulating sleeve, is preferably made higher than the second elevation, which is arranged in the direction of the device connection side of the insulating sleeve.
  • the gradation can also consist of a circumferential depression.
  • the connection side has at least two, i.e. two, three, four, five, six or more circumferential depressions in order to further increase the external creepage distance of the current and at the same time to at least preserve or even preserve the compact design of the connector housing to be able to reduce it.
  • the recess that is more in the direction of the plug side of the Is arranged insulating sleeve, executed deeper than the recess, which is arranged more in the direction of the connection side of the insulating sleeve.
  • the at least one recess can also be used to attach the insulating sleeve to the connector housing.
  • the inner creepage distance runs within the insulating sleeve from the connection area of the high-current contact element through the hollow-cylindrical section of the insulating sleeve to the braided shield of the high-current cable and is thus essentially influenced by the length of the hollow-cylindrical section.
  • An increase in the length of the hollow cylindrical section thus increases the length of the inner creepage distance without affecting the geometric size of the high-current connector, in particular its connector housing.
  • the funnel shape of the fastening section of the insulating sleeve can be used to lengthen the outer air path by, in simple terms, leading the air path around the fastening section in a detour.
  • the outer air gap can therefore be enlarged by the shape of the funnel-shaped fastening section. Depending on the specific design, this can be supported in particular by using a plug connector housing that is at least partially made of plastic.
  • the direct air gap runs along a straight connecting line from the connection area of the high-current contact element to the cable gland / the braided shield and crosses the material of the insulating sleeve.
  • the direct air gap between the connection area and the cable gland can thus also be increased. This can prevent a direct breakdown from the connection area to the cable gland.
  • the relevant area of the insulating sleeve lies on the direct connection line that leads from the connection area of the high-current contact element to the cable gland.
  • the direct air gap can be of particular importance if the connector housing consists at least partially of an electrically insulating material, for example plastic. Furthermore, it can also be of importance for metallic connector housings if the cable attachment or the braided shield, due to the design of the high-load connector, are arranged closer to the connection area than the high-current contact element to any earthed, metallic area of the connector housing.
  • the connector housing can be formed at least partially from an electrically conductive material, such as metal, in particular aluminum.
  • the connector housing can also be formed partly from metal and partly from plastic.
  • the housing can be made of metal, for example aluminum, on the outside and have a plastic coating or an inner plastic cladding or the like on the inside.
  • the plastic is generally used to reliably exclude a direct electrical connection between the connector housing and current-carrying elements of the high-current connector. In order to be sufficiently effective against air gaps, that is, punctures or the like, the plastic material might also have to have sufficient strength.
  • the direct air gap is initially shorter than the path from the high-current contact element to the possibly electrically conductive and grounded connector housing.
  • the material thickness of the insulating sleeve in the relevant area is of particular importance, and the insulating sleeve increases the direct air gap in this case as well. Otherwise, measures could first be taken to increase the air gap between the high-current contact element and the connector housing.
  • the connector housing is preferably an angled connector housing.
  • the plug-in side and the connection side are arranged at an angle, in particular a right angle, to one another.
  • the high-current contact element can be designed in two parts and can thereby enable a right-angled connection area which, compared to a curved area, provides the particular advantage of a particularly large saving in space.
  • the preferably metallic high-current contact element thus consists of a first part and a second part, which are connected to one another in the connection area.
  • the first part has a plug-in area which can have a contact pin or a contact socket.
  • the second part is formed from a connection area which, in particular, has a crimp or axial screw connection.
  • One of the two parts, preferably the second part can have a connection opening for electrical and mechanical connection to the other, preferably the first part.
  • the other of the two parts, preferably the first part has a connection section which interacts mechanically and electrically with the connection opening of the second part and can preferably be received therein in a form-fitting and force-fitting manner.
  • the connecting section can have an external thread and the connecting opening can have a matching internal thread, so that the connecting section can be screwed into the connecting opening.
  • the electrical and mechanical connection of the two parts is produced by said shrink-fitting, that is to say by a shrink-fit connection.
  • the technique of shrinking on consists in that the part which has the connection opening, preferably the second part, is heated, as a result of which the connection opening expands.
  • the other part, preferably the first part, is then inserted into the connection opening, for example with its connecting section.
  • the connection opening and the connection section can have a circular cross-section in order to interlock in a form-fitting manner, so that there is no risk of tilting.
  • connection opening is then reduced in size (shrunk) again by cooling, so that the connection opening encloses the connection section in a form-fitting and force-fitting manner.
  • the angled contact can be produced at right angles - compared to a contact produced in the bending process with a corresponding bending radius - whereby the space requirement of the high-current connector is reduced, especially in the plug-in direction.
  • the holding and contact force of this connection can - depending on the material thickness and material properties - be particularly large and stable in this way.
  • Said cable fastening, in particular cable gland, which holds the high-current cable on the connector housing, is of course primarily used for strain relief, i.e. to relieve the connection of the stranded conductor with the connection area of the high-current contact element from mechanical stress in the form of tensile forces.
  • the cable fastening in particular the cable screw connection, possibly also serves to connect the shield to an at least partially metallic connector housing.
  • an additional protective grounding contact (“Protection Earth contact” / "PE contact”), which is not described in detail here.
  • Cable glands are known in the prior art.
  • the DE 103 11 473 B3 a cable gland in which the strain relief is combined with the seal.
  • the cable fastener is mounted on the connection side of the high-current connector and attaches the high-current cable to the connector housing.
  • the cable fastening in particular the cable screw connection, can ensure a ground connection of the braided shield to the high-current connector, in particular its connector housing.
  • the insulating sleeve has an anti-twist device.
  • the anti-rotation device can be a chamfer or a recess or a molded part on the connection side of the insulating sleeve.
  • the insulating sleeve according to the invention thus ensures sufficiently large air and creepage distances.
  • the entire high-current connector is also correspondingly compact, i.e. designed to save space and, in particular, also has a comparatively low height in the plugging direction.
  • the insulating sleeve has a design that is simple and therefore inexpensive to manufacture.
  • the Fig. 1 shows a perspective illustration of an insulating sleeve 4 according to the invention.
  • the cable connection side K of the insulating sleeve 4 is shown at the rear on the right.
  • the insulating sleeve 4 has a cylindrical section 4.3.
  • the housing connection side G of the insulating sleeve 4 is shown on the front left in this illustration.
  • the insulating sleeve 4 has an inner radius which increases towards the end on the housing connection side.
  • a step is formed on an outer area of a funnel-shaped fastening section 4.4 formed in this way.
  • the gradation is formed from a first elevation 4.11 and a second elevation 4.12 and is used to increase an external creepage distance along the surface of the insulating sleeve 4.
  • the first elevation 4.11 is arranged more in the direction of the cable connection side K of the insulating sleeve 4 compared to the second elevation 4.12.
  • the first elevation 4.11 is made higher than the second elevation 4.12, which is arranged comparatively more in the direction of the housing connection side G of the insulating sleeve 4.
  • the two elevations 4.11, 4.12 can also be used to fasten the insulating sleeve 4 to the connector housing 2.
  • the insulating sleeve 4 has a first anti-rotation lock 4.21 and a second anti-rotation lock 4.22 on its housing connection side G.
  • the first anti-rotation device 4.21 is an extension to the first elevation 4.11, the extension 4.21 pointing in the direction of the housing connection side G and thus being arranged between the two elevations 4.11, 4.12.
  • the second anti-rotation device 4.22 is a recess with a bevel, which is arranged on the end of the insulating sleeve on the housing connection side and has both an inner and an outer contour.
  • at least two types of anti-rotation locks 4.21, 4.22 are shown, but the use of, for example, only the first anti-rotation lock 4.21 or only the second anti-rotation lock 4.22 is possible.
  • the Fig. 2 shows a perspective illustration of a high-current plug connector 1.
  • the high-current plug connector 1 has a plug-in side S and a connection side A.
  • the plug-in side S and the connection side A are arranged at a right angle to one another.
  • the high-current connector 1 thus has an angled connector housing 2.
  • a high-current contact element 3 is accommodated in the connector housing 2, which in this illustration is covered by the connector housing 2 and is therefore not visible.
  • the high-current contact element 3 is, however, in the Fig. 3 good to see.
  • the insulating sleeve 4 is attached to the connector housing 2, only the hollow cylindrical section in this illustration 4.3 and the first elevation 4.11 of the insulating sleeve 4 can be seen.
  • a high-current cable 5 is passed through the insulating sleeve 4 with its stripped end.
  • the insulating sleeve 4 with its hollow cylindrical section 4.3 is pushed under a braided shield 5.1 of the high-current cable 5.
  • the braided shield 5.1 is bent back by 180 ° in the connection area.
  • the high-current cable 5 can be fastened to the connector housing 2 in this area for strain relief and, if necessary, for the ground connection by means of a cable fastening not shown in the drawing, namely a cable screw connection.
  • the Fig. 3 shows a sectional view of the previous arrangement.
  • the high-current cable 5 can be seen very clearly in cross section. Inside it has an electrical conductor in the form of a stranded conductor 5.0. Above this is the strand insulation 5.3, which has been removed on the connection side, i.e. the high-current cable 5 is stripped on the connection side.
  • the screen in the form of a braided screen 5.1 is usually located on the stranded insulation.
  • the coat is located above it 5.2. of the high-current cable 5.
  • the high-current cable 5 is partially stripped on the connection side. The stripped area is larger than the stripped area. In the intermediate area formed as a result, the braided shield is exposed in a partial section and can be bent 180 ° away from the connection area, as shown in the drawing.
  • the high-current contact element 3 includes a plug area 3.1 with a connecting section 3.11 and a plug contact 3.12, which is in this Case designed as a socket contact, so is provided with a contact socket.
  • the plug-in area 3.1 could be provided with a pin contact at this point in the same way, the plug-in contact 3.12 could therefore be designed as a contact pin.
  • the high-current contact element 3 has a connection area 3.2, which in this case is made using crimping technology. In a further embodiment, however, it can also be an axial screw connection.
  • the connection area 3.2 has a circular connection opening 3.0 for connection to the plug-in area, in which the cylindrical connecting section 3.11 of the plug-in area 3.1 is held in a form-fitting and force-fitting manner.
  • the stripped stranded wire 5.0 of the high-current cable 5 is electrically conductively connected within the high-current plug connector 1 to the connection area 3.2 of the high-current contact element 3 for power transmission in the form of a crimping or an axial screw connection.
  • the insulating sleeve 4 has on its funnel-shaped fastening section 4.4 a gradation in the form of two elevations 4.11, 4.12. An unspecified recess is formed between the two elevations 4.11, 4.12. In this recess, an unspecified, inside circumferential mounting projection of the connector housing 2 engages and thus fixes the insulating sleeve 4 on the connector housing 2.
  • the anti-rotation locks 4.21, 422 cannot be seen in this illustration.
  • connection area 3.2 and the stranded conductor 5.0 on the one hand and the cable braid 5.1 and the cable screw connection on the other hand are lengthened by the insulating sleeve 4.
  • the shortest external electrical path through the air leads from the connection area 3.2 past the funnel-shaped fastening section 4.4 on a clear one Detour to the cable mesh 5.1.
  • the direct air gap runs through the insulating sleeve and experiences an effective electrical path extension through its plastic material in accordance with the associated dielectric constant.
  • the outer creepage distance which the gradation in the form of the two elevations 4.11 and 4.12 must traverse, that is to say, covers a much greater distance in order to get from the connection area 3.2 to the cable mesh 5.1, also increases.
  • the insulating sleeve 4 On the cable connection side, the insulating sleeve 4 is pushed with its hollow cylindrical section 4.3 onto the stranded insulation 5.3 and is arranged at least in some areas between the braided shield 5.1 and the stranded insulation 5.3. This also increases the internal creepage distance between the stripped stranded conductor 5.0 and the braided shield 5.1 of the high-current cable 5. Finally, the leakage current cannot flow directly from the connection area 3.2 of the high-current contact element 3 to the braided shield 5.1, but must first completely pass through the cylindrical projection 4.3.
  • the cable mesh 5.1 is also made For reasons of clarity, shown relatively far away from the connection area 3.2. If the connector housing 2 is a plastic housing, then the distance between the connection area 3.2 and the cable mesh 5.1 bent back by 180 ° is relevant for the air and creepage distances. If, on the other hand, it is an at least partially metallic connector housing 2, then this distance can nevertheless also be relevant for the direct air gap, provided the effective air gap between the high-current contact element 3 and electrically conductive areas of the connector housing 2 is greater.

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  • Connector Housings Or Holding Contact Members (AREA)

Claims (15)

  1. Connecteur pour courant fort (1), présentant un boîtier de connecteur (2) et un élément de contact pour courant fort (3),
    le connecteur pour courant fort (1) présentant un côté enfichage (S) et un côté connexion (A),
    l'élément de contact pour courant fort (3) étant disposé à l'intérieur du boîtier de connecteur (2),
    l'élément de contact pour courant fort (3) possédant une zone d'enfichage (3.1) et une zone de connexion (3.2),
    un conducteur électrique (5.0) d'un câble pour courant fort (5) pouvant être connecté à la zone de connexion (3.2),
    le câble pour courant fort (5) pouvant être fixé au côté connexion (A) du connecteur pour courant fort (1) au moyen d'une fixation de câble,
    le connecteur pour courant fort (1) présentant une douille isolante (4) fixée, ou du moins pouvant être fixée, à une partie cylindrique creuse (4.3) côté connexion de câble,
    caractérisé en ce que la douille isolante présente une partie de fixation (4.4) en forme d'entonnoir, côté connexion de boîtier, pour respecter des entrefers et lignes de fuite prédéfinis, la partie cylindrique creuse (4.3) de la douille isolante (4) pouvant être introduite au moins par endroits entre une isolation de fil (5.3) et une gaine de blindage (5.1) du câble pour courant fort (5).
  2. Connecteur pour courant fort (1) selon la revendication 1, caractérisé en ce qu'un épaulement périphérique (4.11, 4.12) est rapporté sur un côté extérieur de la partie de fixation (4.4).
  3. Connecteur pour courant fort (1) selon la revendication 2, caractérisé en ce que l'épaulement périphérique est composé d'au moins un relief périphérique (4.11, 4.12).
  4. Connecteur pour courant fort (1) selon l'une quelconque des revendications 2 et 3, caractérisé en ce que l'épaulement périphérique (4.1) est composé d'au moins un creux périphérique.
  5. Connecteur pour courant fort (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la fixation de câble est réalisée sous la forme d'un presse-étoupe.
  6. Connecteur pour courant fort (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la douille isolante (4) présente au moins un dispositif anti-rotation (4.21, 4.22).
  7. Connecteur pour courant fort (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la douille isolante (4) est composée d'une matière plastique électriquement isolante.
  8. Connecteur pour courant fort (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le connecteur pour courant fort (1) est réalisé de manière coudée.
  9. Connecteur pour courant fort (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de contact pour courant fort (3) est réalisé en deux parties.
  10. Connecteur pour courant fort (1) selon la revendication 9, caractérisé en ce que l'élément de contact pour courant fort (3) est formé à partir d'une zone d'enfichage (3.1) et d'une zone de connexion (3.2) qui sont toutes les deux métalliques.
  11. Connecteur pour courant fort (1) selon l'une quelconque des revendications 9 et 10, caractérisé en ce que la zone d'enfichage (3.1) et la zone de connexion (3.2) sont reliées l'une à l'autre de manière électrique et mécanique par un assemblage vissé ou par un assemblage fretté.
  12. Connecteur pour courant fort (1) selon l'une quelconque des revendications 10 et 11, caractérisé en ce que la zone d'enfichage (3.1) et la zone de connexion (3.2) sont reliées l'une à l'autre à angle droit.
  13. Connecteur pour courant fort (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le boîtier de connecteur (2) est formé au moins partiellement à partir d'une matière plastique électriquement isolante.
  14. Connecteur pour courant fort (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le boîtier de connecteur (2) est composé au moins partiellement d'un matériau électriquement conducteur.
  15. Connecteur pour courant fort (1) selon la revendication 14, caractérisé en ce que le boîtier de connecteur (2) est au moins partiellement métallique.
EP18773929.7A 2017-09-22 2018-09-06 Connecteur pour courants forts muni d'une douille isolante Active EP3685471B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017121976 2017-09-22
PCT/DE2018/100761 WO2019057239A1 (fr) 2017-09-22 2018-09-06 Connecteur pour courants forts muni d'une douille isolante

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EP3685471A1 EP3685471A1 (fr) 2020-07-29
EP3685471B1 true EP3685471B1 (fr) 2021-07-07

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EP18773929.7A Active EP3685471B1 (fr) 2017-09-22 2018-09-06 Connecteur pour courants forts muni d'une douille isolante

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US (1) US10992080B2 (fr)
EP (1) EP3685471B1 (fr)
KR (1) KR102386790B1 (fr)
CN (1) CN111133633B (fr)
WO (1) WO2019057239A1 (fr)

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Also Published As

Publication number Publication date
WO2019057239A1 (fr) 2019-03-28
EP3685471A1 (fr) 2020-07-29
US10992080B2 (en) 2021-04-27
KR102386790B1 (ko) 2022-04-15
KR20200049870A (ko) 2020-05-08
US20200266577A1 (en) 2020-08-20
CN111133633A (zh) 2020-05-08
CN111133633B (zh) 2021-11-30

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