EP4210174A1 - Manchon conducteur amélioré et procédé de connexion d'une section de conducteur à l'aide du manchon conducteur - Google Patents

Manchon conducteur amélioré et procédé de connexion d'une section de conducteur à l'aide du manchon conducteur Download PDF

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Publication number
EP4210174A1
EP4210174A1 EP22216797.5A EP22216797A EP4210174A1 EP 4210174 A1 EP4210174 A1 EP 4210174A1 EP 22216797 A EP22216797 A EP 22216797A EP 4210174 A1 EP4210174 A1 EP 4210174A1
Authority
EP
European Patent Office
Prior art keywords
section
receiving section
sleeve
conductor
receiving
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.)
Pending
Application number
EP22216797.5A
Other languages
German (de)
English (en)
Inventor
Wilhelm Engst
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.)
Engstkabel & Co Kg GmbH
Original Assignee
Engstkabel & Co Kg GmbH
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 Engstkabel & Co Kg GmbH filed Critical Engstkabel & Co Kg GmbH
Publication of EP4210174A1 publication Critical patent/EP4210174A1/fr
Pending legal-status Critical Current

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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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H01R43/0484—Crimping apparatus or processes for eyelet contact members
    • 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
    • H01R4/20—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 using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork

Definitions

  • the invention relates to an electrically conductive sleeve, in particular a sleeve configured as a compression sleeve, having at least one connecting section and at least one receiving section for receiving at least one stripped conductor section of an electrically conductive conductor. Furthermore, the invention relates to a method for connecting the electrically conductive sleeve to a stripped conductor section.
  • connection elements such as cable lugs or end sleeves are usually used, which are designed to form a plug connection or a screw connection at the end.
  • these end sleeves have a tubular receiving section.
  • a stripped electrical conductor of the cable or one of the stripped electrically conductive cores of the cable is inserted into this receiving section.
  • the conductor is fixed in the sleeve either by screws or by deforming compression. This forms the contact between the conductor material and the electrically conductive material of the end sleeve for the transmission of current.
  • pressing tools are usually used in which pressing inserts suitable for each conductor and sleeve cross-section have to be used.
  • Which crimping inserts are to be used is regulated by various standards and can be noted by an embossing on the crimping point of the end sleeve.
  • the necessary pressing points are usually marked with thin, long lines.
  • connection elements or end sleeves are used for the connection of aluminum conductors, the mounting sections of which are designed to be significantly longer than the mounting sections for copper conductors. With aluminum conductors, the required electrical safety is guaranteed by the extended mounting section and multiple pressing. However, the lengthened receiving section requires more installation space, which is often not available in junction boxes or distributor boxes, since these are designed for the use of copper conductors.
  • the resulting shape of the pressed receiving section is predetermined by the geometry of the pressing tool. If the actual cross section of the conductor used is smaller than the nominal cross section of the conductor due to manufacturing tolerances or material savings, this can result in the conductor not being mechanically and electrically fixed sufficiently in the deformed receiving section. In extreme cases, such a connection can fail due to thermal overheating. Furthermore, the type of press markings used hitherto cannot ensure the correct alignment and positioning of the press tool in relation to the end sleeve. The pressing tool can thus be attached to the edge or end of the receiving section in such a way that the conductor or individual wires are sheared off. This affects the mechanical stability and reduces the electrical conductivity.
  • New pressing methods for plastically deforming receiving sections are already known, in which no pressing inserts are required.
  • a conical mandrel is extended under hydraulic force control and pressed into the receiving section of the end sleeve with the conductor section located therein.
  • the advantages of this pressing technology are a very high mechanical and electrical quality, which can be achieved with one tool for a wide range of different conductor cross-sections without changing tools.
  • the large asymmetrical deformation of the receiving section caused by the pressing technique has a disadvantageous effect if more than one pressing is carried out one after the other in the longitudinal direction of the end sleeve. In this case, the compression sleeve deforms in the shape of a segment of a circle or like a banana.
  • this pressing method the precise central alignment of the mandrel on the receiving section is made more difficult.
  • the invention is based on the object of creating a modified, electrically conductive sleeve and a method for precisely connecting compression sleeves to conductors by means of a compression mandrel.
  • an electrically conductive sleeve in particular a sleeve designed as a compression sleeve, is provided.
  • the sleeve can be designed as an end sleeve.
  • the sleeve can be made of an electrically conductive material, such as copper, a copper alloy, aluminum, an aluminum alloy and the like.
  • the sleeve can have an insulator arranged on the outside or be provided with an outside coating. In this case, the coating can be insulation, protection against corrosion, mechanical protection and the like.
  • the sleeve has at least one connecting section and at least one receiving section for receiving at least one stripped conductor section of an electrically conductive conductor.
  • the connecting section and the receiving section are designed to be electrically conductive with one another.
  • the receiving section and the connecting section of the sleeve can be configured integrally.
  • the receiving section has at least one positioning aid for positioning a press mandrel of a pressing tool on the outside of the receiving section.
  • the positioning aid By using the positioning aid, a starting point for the mandrel or press mandrel of the press tool can be provided.
  • the positioning aid enables precise control of the deformation by the press mandrel and avoids a lateral displacement or "slipping" of a tip of the press mandrel on the receiving section of the sleeve.
  • a method of connecting a conductor to an electrically conductive sleeve is provided.
  • the sleeve according to the invention can preferably be used.
  • a stripped conductor section is arranged in a volume of a receiving section of the sleeve.
  • the sleeve is then positioned with the conductor section arranged in the receiving section in such a way that a tip of a pressing mandrel of a pressing tool interacts in a form-fitting manner with a positioning aid arranged on the outside of the receiving section.
  • the tip of the press mandrel can interact with the positioning aid in a form-fitting and/or force-fitting and/or friction-fitting manner.
  • the tip of the press mandrel can protrude into the positioning aid, collide with the positioning aid, or be decelerated at the positioning aid or blocked with regard to movement.
  • a lateral movement and a movement of the press mandrel directed towards the sleeve can be prevented by the positioning aid.
  • the pressing mandrel is pushed in with the aid of the positioning aid in the direction of the receiving section and a volume of the receiving section is deformed.
  • This movement of the press mandrel can be force-controlled, for example.
  • the receiving section is supported on a side opposite the positioning aid by an abutment of the pressing tool, so that the receiving section of the sleeve is compressed at least in regions between the pressing mandrel and the abutment.
  • the positioning aid enables a precise point of contact for the tip of the press mandrel, so that the entire deformation process can be carried out by the mandrel at specific points and in a repeatable manner.
  • the positioning aid can be designed in the form of a depression into which the tip of the press mandrel can protrude.
  • the positioning aid is preferably arranged or introduced along a circumference of the receiving section of the sleeve.
  • the positioning aid offers a function of a grain for the press mandrel.
  • the positioning aid can be used to set the pressings with the pressing tool so precisely along the receiving section that several pressings acting in opposite directions can be carried out one after the other in the longitudinal direction of the pressing sleeve in order to counteract banana-like deformations of the sleeve.
  • the sleeve is thus optimally suited for such force-controlled pressing methods using a press mandrel, in particular because the press mandrel is prevented from shearing off in the direction of an edge region of the sleeve.
  • the sleeve can preferably be adapted to be connected to aluminum lines.
  • the possibility of precise centering of the pressing point eliminates the need for a second pressing or connection point in the longitudinal direction of the receiving section, so that the sleeve can be designed to be shorter in the longitudinal direction and thus requires less installation space.
  • the at least one positioning aid can have a particularly simple technical design if it is designed as at least one indentation with a square, circular or triangular cross-section, with the cross-section tapering or being constant with increasing depth.
  • the positioning aid can also be implemented as a local perforation or granulation, which can fix a tip of the press mandrel in a frictionally and/or form-fitting manner.
  • the recess can have a conical shape or a cone shape or a pyramid shape pointing in the direction of the volume of the receiving section.
  • the at least one positioning aid is designed as a single-stage or multi-stage indentation.
  • Corresponding steps of the depression here have a different depth, and the respective steps can be shaped symmetrically, in particular coaxially, or asymmetrically.
  • a positioning aid can be provided that is adapted to the tip of the press mandrel with a particularly precise fit. This allows the Positioning of the press mandrel on the positioning aid is simplified and the guidance of the press mandrel can be improved by the positioning aid.
  • the at least one positioning aid can also be used as a control window or viewing window for the volume of the receiving section if the at least one positioning aid designed as a recess protrudes through a wall of the receiving section at least in some areas.
  • the section protruding through the wall can be used to check whether the conductor section has been pushed far enough into the volume to ensure an optimal connection through the pressing.
  • the section projecting through the wall can be designed as a through-bore which is arranged symmetrically or asymmetrically at least in some areas.
  • a press mandrel can preferably have a centering section or positioning section, which protrudes into the through hole and have a press section, which can act on the outside of the material of the wall. The positioning section is thus spaced apart from the at least one pressing section.
  • the receiving section is tubular with a round or an oval or an asymmetrically shaped or a polygonal cross-section.
  • the receiving section preferably has a volume for receiving the stripped conductor section, which is delimited at least in regions by the wall. This measure allows the sleeve to be shaped in a particularly versatile manner.
  • the connection section of the sleeve can be set up to form a screw connection, a clamp connection, a plug-in connection and the like.
  • the sleeve can be subjected to particularly small deformations despite several necessary pressings if at least two positioning aids are arranged on opposite sides of the receiving section, with at least two positioning aids being spaced apart from one another along a longitudinal extent of the receiving section.
  • the at least two positioning aids can be arranged at an angle of 180° relative to one another.
  • several positioning aids for example pivoted by 120°, 90° or 60° relative to one another, can be introduced into the receiving section.
  • the receiving section can have a large number of possible positioning aids along one position in the longitudinal direction or along a plurality of positions spaced apart from one another along the longitudinal direction, which can be used as desired. Not all positioning aids have to be used here, but a positioning aid can be used to introduce a pressing, for example.
  • connection or pressing between the conductor section and the receiving section can be formed at a number of positions along an elongate extension of the receiving section in order to create a particularly strong connection with an optimized contact resistance.
  • the tip of the pressing mandrel is placed one after the other on several positioning aids arranged alternately on opposite sides along the longitudinal extension of the receiving section and by the positioning aid pushed through into the receiving section.
  • connection between the conductor section and the receiving section is formed in such a way that an unpressed, minimum edge-side distance of 3 to 20 mm, including 3 mm and 20 mm, is set. This measure can ensure that there is sufficient material at the edge and that parts of the conductor section do not shear off.
  • FIG. 1 1 is a schematic plan view of a sleeve 10 designed as a cable lug according to an embodiment of the invention.
  • the sleeve 10 is made in one piece from an electrically conductive material, which is an aluminum alloy in the illustrated embodiment.
  • the connecting section 11 and the receiving section 12 are connected to one another in an electrically conductive manner.
  • the sleeve 10 has a connecting section 11 and a receiving section 12 for receiving at least one stripped conductor section 21 of an in 2 shown conductor 20 on.
  • the connecting section 11 is set up to enter into a screw connection.
  • the connecting section 11 is designed in the form of a screw eyelet and has a through hole 13 for passing through a screw or threaded rod (not shown).
  • the receiving section 12 is designed as a tubular section which has a substantially circular cross section.
  • the receiving section 12 is elongate along a longitudinal direction L.
  • a peripheral wall 14 of the receiving section 12 delimits a volume 15 into which the conductor section 21 can be inserted at the end.
  • a positioning aid 30 is arranged in the wall 14 of the receiving section 12 on the outside of the receiving section 12 .
  • the positioning aid 30 is designed as a depression and has two steps 31, 32 with different depths.
  • an in 3 shown pressing mandrel 110 of a pressing tool 100 protrude form-fitting end into the positioning aid 30.
  • a first stage 31 of the positioning aid 30 has a lower depth than a second stage 32 .
  • the first stage 31 is coaxial with the second stage 32 and is symmetrical about the second stage 32.
  • the 2 12 shows a schematic plan view of the sleeve 10 from FIG 1 with an introduced connection 40 between the stripped conductor section 21 and the receiving section 12 of the sleeve 10.
  • the conductor section 21 stripped at the end consists of a multiplicity of thin aluminum wires which are stranded or twisted into a bundle.
  • the conductor section 21 can be designed as a solid conductor, as a multi-wire round or sector conductor and the like.
  • the stripped conductor section 21 can consist of an electrically conductive material such as copper, aluminum or an electrically conductive alloy.
  • connection 40 has been introduced into the receiving section 12 .
  • the connection 40 has a pattern of mandrel 110 that is cone shaped with a plurality of mandrel steps 111 .
  • only one connection 40 is introduced into the receiving section 12 . Due to the precisely centered connection 40 introduced by means of plastic deformation of the receiving section 12, this one connection 40 is already sufficient to reliably and electrically conductively connect the conductor section 21 made of aluminum to the sleeve 10.
  • the 3 shows a perspective view of a pressing tool 100 with an inserted sleeve 10 according to a further embodiment of the invention.
  • the sleeve 10 shown has the electrically conductive sleeve 10 here on an extended receiving section 12, in which two connections 40, 41 can be introduced by plastic deformation.
  • the correspondingly introduced connections 40, 41 are in figure 5 and in 6 illustrated.
  • a pressing tool 100 designed as a manually operable pressing tongs is shown, into which a sleeve 10 is inserted.
  • the sleeve 10 is inserted in a tool section 120 provided for this purpose, which is located between an abutment 130 and the press mandrel 110 .
  • the receiving section 12 can thus be pressed between the abutment 130 and the press mandrel 110 .
  • the sleeve 10 can be rotated in the inserted tool section 120 and displaced along the longitudinal direction L, so that precise positioning of the connection 40 on the circumference of the receiving section 12 would not be possible.
  • the position provided for the plastic deformation by the press mandrel 110 can be specified precisely by the positioning aid 30 introduced.
  • the positioning aid 30 allows a tip 112 of the press mandrel 110 to engage in the corresponding recess of the positioning aid 30 . This creates an optimal alignment between the abutment 130, the sleeve 10 and the mandrel 110.
  • a correspondingly aligned sleeve 10 is in the 4 shown.
  • the 4 shows a perspective view of the pressing tool 100 with the sleeve 10 aligned by the positioning aid 30.
  • the tip 112 of the pressing mandrel 110 protrudes into the positioning aid 30 and is locked in a form-fitting manner.
  • the press mandrel 110 is pushed through the positioning aid 30 or transversely to the longitudinal direction L into the receiving section 12 .
  • the receiving section 12 is supported here on a side opposite the positioning aid 30 by the abutment 130 of the pressing tool 100 during the pressing process.
  • the press mandrel 110 After pressing in the receiving section 12 on the positioning aid 30, the press mandrel 110 is spaced from the sleeve.
  • a mechanical and electrically conductive connection 40 is already formed between the conductor section 21 and the sleeve 10 .
  • a second connection 41 can be introduced into the receiving section 12 .
  • a second positioning aid 33 can be provided to form the second connection 41 between the conductor section 21 and the receiving section 12 at a further or second position along the longitudinal extension of the receiving section 12 .
  • the second positioning aid 33 is spaced apart from the first positioning aid 30 in the longitudinal direction L.
  • the first positioning aid 30 is offset by 180° relative to the second positioning aid 33 along the longitudinal direction L, so that the press mandrel 110 can be positively attached to opposite sides of the sleeve 10 in order to form electrically conductive connections 40, 41 by means of plastic deformation.
  • the tip 112 of the pressing mandrel 110 is successively attached to a plurality of positioning aids 30, 33 arranged alternately on opposite sides along the longitudinal extension of the receiving section 12 and pushed through the corresponding positioning aid 30, 33 into the receiving section 12 transversely to the longitudinal direction L.
  • FIG 5 and the 6 are perspective views of a sleeve 10 from FIG 3 shown with two introduced connections 40, 41 between a conductor section 21 and the receiving section 12 of the sleeve 10. These represent a result of the method according to the invention.
  • the two connections 40, 41 on two opposite sides 16, 17 of the receiving section 12 are shown.
  • a first connection 40 is introduced into a first side 16 and a second connection 41 is introduced into a second side 17 of the receiving section 12 .
  • traces of deformation 50, 51 of the abutment 130 in the receiving section 12 are visible. Due to the process, the corresponding deformation tracks 50, 51 are formed on opposite sides 16, 17 of the correspondingly introduced connections 40, 41.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
EP22216797.5A 2022-01-05 2022-12-27 Manchon conducteur amélioré et procédé de connexion d'une section de conducteur à l'aide du manchon conducteur Pending EP4210174A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022100191.1A DE102022100191A1 (de) 2022-01-05 2022-01-05 Verbesserte leitfähige Hülse und Verfahren zum Verbinden eines Leiterabschnitts mit der leitfähigen Hülse

Publications (1)

Publication Number Publication Date
EP4210174A1 true EP4210174A1 (fr) 2023-07-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22216797.5A Pending EP4210174A1 (fr) 2022-01-05 2022-12-27 Manchon conducteur amélioré et procédé de connexion d'une section de conducteur à l'aide du manchon conducteur

Country Status (2)

Country Link
EP (1) EP4210174A1 (fr)
DE (1) DE102022100191A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635901A1 (fr) * 1993-07-19 1995-01-25 AEROSPATIALE Société Nationale Industrielle Procédé de raccordement d'un câble électrique sur un élément d'extrémité et élément d'extrémité correspondant
JPH0878131A (ja) * 1994-06-27 1996-03-22 Seiko Epson Corp 導線接続方法と導線接続端部構造
DE19523514A1 (de) * 1995-06-30 1997-01-02 Alcatel Kabel Ag Elektrische Verbindung von zwei kunststoffisolierten Hochspannungskabeln und Verfahren zum Herstellen einer solchen Verbindung
EP1988604A2 (fr) * 2007-05-01 2008-11-05 TRI-STAR TECHNOLOGIES (a California Partnership) Ensemble de contacts électriques incorporant un élément de manchon
FR3050579A1 (fr) * 2016-04-25 2017-10-27 A M C Dispositif et procede de reparation des cosses de connexion electroqie
JP2021163727A (ja) * 2020-04-03 2021-10-11 古河電気工業株式会社 圧着部、ジョイント端子、ジョイント構造、圧着部の製造方法及びジョイント端子の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635901A1 (fr) * 1993-07-19 1995-01-25 AEROSPATIALE Société Nationale Industrielle Procédé de raccordement d'un câble électrique sur un élément d'extrémité et élément d'extrémité correspondant
JPH0878131A (ja) * 1994-06-27 1996-03-22 Seiko Epson Corp 導線接続方法と導線接続端部構造
DE19523514A1 (de) * 1995-06-30 1997-01-02 Alcatel Kabel Ag Elektrische Verbindung von zwei kunststoffisolierten Hochspannungskabeln und Verfahren zum Herstellen einer solchen Verbindung
EP1988604A2 (fr) * 2007-05-01 2008-11-05 TRI-STAR TECHNOLOGIES (a California Partnership) Ensemble de contacts électriques incorporant un élément de manchon
FR3050579A1 (fr) * 2016-04-25 2017-10-27 A M C Dispositif et procede de reparation des cosses de connexion electroqie
JP2021163727A (ja) * 2020-04-03 2021-10-11 古河電気工業株式会社 圧着部、ジョイント端子、ジョイント構造、圧着部の製造方法及びジョイント端子の製造方法

Also Published As

Publication number Publication date
DE102022100191A1 (de) 2023-07-06

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