EP0786827A2 - Dispositif de serrage pour la connexion électrique d'un câble - Google Patents

Dispositif de serrage pour la connexion électrique d'un câble Download PDF

Info

Publication number
EP0786827A2
EP0786827A2 EP96119786A EP96119786A EP0786827A2 EP 0786827 A2 EP0786827 A2 EP 0786827A2 EP 96119786 A EP96119786 A EP 96119786A EP 96119786 A EP96119786 A EP 96119786A EP 0786827 A2 EP0786827 A2 EP 0786827A2
Authority
EP
European Patent Office
Prior art keywords
flange
nut
holding part
cable lug
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96119786A
Other languages
German (de)
English (en)
Other versions
EP0786827A3 (fr
EP0786827B1 (fr
Inventor
Günther Nölle
Bernd Meyer
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.)
Auto Kabel Hausen GmnH and Co Betriebs KG
Original Assignee
Auto Kabel Hausen GmnH and Co Betriebs KG
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 Auto Kabel Hausen GmnH and Co Betriebs KG filed Critical Auto Kabel Hausen GmnH and Co Betriebs KG
Publication of EP0786827A2 publication Critical patent/EP0786827A2/fr
Publication of EP0786827A3 publication Critical patent/EP0786827A3/fr
Application granted granted Critical
Publication of EP0786827B1 publication Critical patent/EP0786827B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • 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 a cable lug with screw connection for the electrical connection of a cable, which cable lug consists of sheet metal and has a U-shaped pre-bent holding part, which compresses the conductive end of the cable by compressing the U cross-section and in particular the U-leg curved cross-section - receives in a clamped manner, and which has an essentially flat or flat fastening part in the form of an eyelet with a perforation and a screw connection for pressing onto a mating contact, in particular integrally connected to the holding part, the screw connection either with the aid of a pin which engages a bolt, the nut overlapping the eyelet or a screw passing through the eyelet is carried out with its head overlapping the eyelet and the nut or the head of the screw has a circumferential flange which projects radially from the nut or the head in the region of its contact surface resting on the eyelet.
  • the holding part and the fastening part are preferably connected in one piece.
  • Such a cable lug is known from practice.
  • the nut or screw must be fed in, which represents a corresponding operation.
  • the advantage of the flange consists in increasing the contact area and thus the contact area without requiring a correspondingly large thread, so that relatively space-saving tools can be used.
  • the U-shaped pre-bent holding part must maintain a sufficient distance from the mother so that a tool can attack this mother, so that there is only a narrow and thin web between the holding part and the eyelet, which can be easily bent. Due to the special nut provided with a groove, the screw connection differs from that of the generic cable lug with screw connection.
  • the invention has for its object to provide a cable lug with screw connection of the type mentioned, in which a nut with flange or a screw with screw head with flange can be used for the screw connection, these parts belonging to the screw connection not in a separate operation must be supplied, but can be connected to the cable lug pre-assembled.
  • the screw connection should be easily accessible for a tool, but the transition area between the holding part and the fastening part or eyelet should nevertheless have improved flexural rigidity.
  • the generic cable lug with screw connection is characterized in that that at least one projection and / or a retaining tongue protrudes on the fastening part and overlaps the upper side of the flange of the nut or screw head facing away from the contact surface for axial securing and that the holding part extends to the outer circumference of the flange and acts on it at least in the radial direction and / or specifies.
  • a commercially available flange nut or flange screw can also be used, the flange also being used to secure it to the cable lug, while at the same time maintaining the advantage of forming the largest possible contact area.
  • the overall cross section of the cable lug can also be kept relatively large at the transition between the eyelet and the holding part, since this area can also extend as a U-shaped bent area to the circumference of the flange of the nut or the screw, so no undercut is required at this point , because due to the flange there is still enough space for a tool to grip the nut or the screw head.
  • the enlarged cross section in this transition area of the cable lug which benefits the transmission of electrical energy, also leads to a fixing of the nut or screw in the radial direction, so that even a single overlapping the top of the flange retaining tongue in cooperation with this also radial fixing can suffice to at least temporarily fix the screw connection on the cable lug sufficiently to be able to store it together with the cable lug and to carry it out for assembly.
  • a contact that can be overcome when twisting or a play is provided between the holding part and the flange that is smaller than the extent of the overlap of the protrusion or protrusions in the radial direction.
  • the retaining projection in the form of a tongue or the like which extends over the flange for securing in the axial direction may not overlap the flange over its entire radial width. It is enough if only one part the radial width of the flange is overlapped. A certain amount of play can then remain between your holding part and the flange at the location provided for radial securing, in order nevertheless to prevent a screw or nut from sliding out of this provisional holder. The smaller this play or, if the holding part and the outer circumference of the flange come into direct contact, the provisional fixing of the nut or screw becomes correspondingly better.
  • the U-shaped cross section of the holding part partially merges into the fastening part and if the ends of the U-legs facing the eyelet with their end faces or transition surfaces on the circumference of the flange of the nut or the screw head, seen in the radial direction, lie at an acute angle or tangentially.
  • the U-legs receive an additional function by supporting the nut or screw in the radial direction, so that practically a single tongue-like holding projection is sufficient on an opposite diameter, which engages over the top of the flange, so that the nut or screw is captive but overall rotatable to connect with the cable lug.
  • a further embodiment of the invention for improving the mounting of the screw connection can consist in that at the end of the or the U-leg of the holding part in the area of contact with the flange a protrusion projecting beyond the top of the flange or a protrusion extending over the upper side of the flange or a tongue which can be bent over onto the upper side of the flange is provided.
  • this leads to an improvement in the fixing, in particular when it is combined with an axial fixing by overlapping the flange. Since the cable lug made of sheet metal can be bent and shaped in one piece, such protrusions or initially protruding and then bendable tongues can be provided in a simple manner.
  • Another or additional configuration for in particular radial support and mounting of the flange of the nut or the screw head can consist in that a step-shaped or approximately Z-shaped transition is provided between the holding part and the fastening part, which in the use position on the outside or the Circumferential surface of the flange has a clearance or is present and, in the case of the Z cross-sectional shape, overlaps at least the edge of the flange.
  • a step-like design of the transition between the holding part and the fastening part can thus be used to prevent radial evasion of the nut or the screw head, and can thus serve as radial securing. In the case of a Z-shaped cross-sectional shape, this gradation can even additionally form an axial partial securing.
  • a further embodiment, in particular of such a step-shaped transition serving for radial securing, can consist in that a tongue is partially punched out of the step-shaped transition between the holding part and the fastening part in such a way that it starts from the U-transverse web of the fastening part, which is higher than the bearing surface, such that the height the transition corresponds approximately to the axial thickness of the flange and that the tongue engages over the top of the flange in the use position. Together with another tongue across the flange, which crosses the diameter, this results in a very stable Fixing a nut or a screw head, whereby these screw parts - as with the previously described design options - remain easily rotatable.
  • the step-shaped transition can have a rounded longitudinal profile oriented in the circumferential direction of the flange and adapted to the circumference of the flange and, with its rounded longitudinal extent, run along the outside of the flange and / or overlap the upper edge of the flange facing away from the bearing surface. This results in the radial securing over a larger circumference of the flange, so that a nut can not escape in the radial direction and slip out between this radial holder and a tongue serving for axial fixing.
  • the improvement of the mounting of the screw connection on the cable lug can also be provided in the region of the protrusion or crossings.
  • Simple bendable tabs or tongues have the advantage of simple manufacture, but it is also possible that the projection overlapping the flange is widened, at least in the area above the flange on its side facing away from the bearing surface and contact surface, in particular in the circumferential direction of the flange. As a result, it may be possible to use fewer such projections or even only one such projection instead of a plurality of tongue-shaped tongues or projections which overlap the flange in the axial direction.
  • the widening of the overlapping projection can be shaped from this to two sides in a fork or arc shape approximately according to the ring shape of the flange and this widening can in particular overlap about a quarter to more than half of the flange in its circumferential direction or even as a closed ring on the run around the entire top of the flange.
  • the flange on the nut or the screw head rotates in a ring and on its upper side facing away from the contact surface has a good and wide ring surface on which a correspondingly widened or even a projection configured to rest can rest, whereby it can have so much play that the nut or the screw head can be used without problems can be rotated, but can not be moved away from its use position in the axial and / or radial direction.
  • the height of the U-legs of the holding part running in the axial direction of the screw or nut can be reduced in the contact area and in the neighboring area of the nut or the screw head compared to the total height or cross-sectional length of these U-legs - in the area of the holding part - in such a way that above the flange the circumference of the nut or screw is also accessible in the area of the holding part for an assembly tool. If the assembly tool itself has a larger outer circumference than the flange, due to this reduced height of the U-legs, it can nevertheless engage in particular on the outside of the parts of the nut or the screw head which project correspondingly in the axial direction. If the screw head or a correspondingly designed nut is twisted by an internal polygon or the like, the reduction in the cross-sectional length of the U-legs in the neighboring region of the nut or the screw could also be omitted.
  • a cable lug with screw connection results, in which known flange nuts can be used, which have a large pressure area relative to their thread cross section.
  • the cable lug itself can have greater stability, especially against bending and a lower voltage drop, because the U-cross section used to grasp the conductive end of the cable, which is pressed onto the cable to clamp it, extends as far as the screw connection - possibly with a reduced height in order to leave space for an attacking tool, so that the stiffer U-cross section is already present immediately adjacent to the screw connection.
  • a cable lug designated as a whole is used for the electrical connection of a cable 2, this being done with the aid of a screw connection 3.
  • the cable lug 1 is made of sheet metal and can be gem. 3 first be shaped as a flat stamped part in order then to form the actual cable lug 1 according to FIG. Figures 1, 2 and 4 to 7 to be bent.
  • the cable lug 1 has a U-shaped pre-bent holding part 4, which according to the conductive end 5 of the cable 2 by compressing the U-cross section and in particular the U-leg 6.
  • Fig. 1 and 2 clamps.
  • the U-legs 6 are adapted to the generally round cross-sectional shape of the cable 2 and its conductive end 5.
  • the holding part 4 also has a second holder 7, which can grip around an insulated region of the cable 2, this additional holder 7 not being absolutely necessary, but also in the embodiments according to FIG. 4 to 7 could also be present.
  • Adjacent to the holding part 4 is an essentially flat or flat fastening part 8 in the form of a perforated eyelet and the perforation 9 forming this eyelet can be clearly seen especially in FIG. 3.
  • This eyelet or the fastening part 8 can be pressed against a mating contact 10 (FIG. 1) by means of a screw connection 3 passing through this hole 9 of the eyelet, in which case the screw connection 3 consists of a bolt 11 and a nut that engages over the eyelet 12 exists.
  • a screw with its head which penetrates the fastening and contact part 8, that is to say the eyelet at its perforation 9.
  • the nut 12 - or the head of a screw - has in the area of its bearing surface on the eyelet an annular circumferential flange 13 protruding radially from the nut 12 itself, through which the bearing surface is enlarged so that there is a correspondingly large contact with one can produce smaller threads.
  • the cable lug 1. 6 shows a single projection or a holding tongue 14, while in the exemplary embodiment according to FIG. 7 there are two holding tongues 14 still to be described and the exemplary embodiments according to FIG. Fig. 1 to 4 and acc. 5 have three such projections or retaining tongues 14, which overlaps the upper side 15 of the flange 13 of the nut 12 facing away from the bearing surface - or a screw head - in the axial direction and for axial securing.
  • Figures 2 and 4 to 7 it can be clearly seen that the nut 12 can not be removed in the axial direction due to these retaining tongues or projections 14 from the position shown.
  • the holding part 4 also extends in a manner to be described up to the cylindrical outer circumference 16 of the flange 13, which acts on it at least in the radial direction, so that it is also fixed in this direction.
  • a nut 12 or the head of a corresponding flange screw can thus be captively connected to the cable lug 1, but remain rotatable due to a corresponding play or a correspondingly slight contact force.
  • the cable lug 1 with the screw connection 3 can be made available as a prefabricated part, which considerably simplifies assembly or repairs and in particular allows automation.
  • a contact that can be overcome when twisting is provided between the holding part 4 and the flange 13.
  • a certain amount of play could possibly remain free, but this should then be chosen to be smaller than the extent of the overlapping of the protrusions or tongues 14 in the radial direction, so that even with an arrangement with only one or two such tongues, the flange is not between these axially and radial fuses could be pushed out.
  • the U-shaped cross section of the holding part 4 merges into the fastening part 8 and the eyelet, so that this transition region also has good flexural rigidity.
  • two advantages are achieved at the same time, namely good rigidity and stability and a lower voltage drop in this transition area, which now has a larger cross section, and moreover, with the help of the U-legs 6, the radial securing of the nut 12 - or possibly a screw head - be carried out in that the ends 17 of the U-legs 6 facing the eyelet and the holding part 8 bear with their end faces 18 or transition surfaces on the circumference 16 of the flange 13, as seen in the axial direction, that is to say according to FIG.
  • FIG. 6 is an example that the U-legs 6 with their ends 17 or end faces 18 only touch the outer circumference 16 of the flange 13, while in the exemplary embodiments according to FIG. Fig.1, 2, 4 and 5, the possibility is shown that at the end 17 of the or the U-leg 6 of the holding part 4 in the contact area with the flange 13, a top 15 of the flange 13 projecting overhang and at the same time the top of the flange 13 overlapping projection 14 (Fig.5) can be provided, but according to. 2 and 4 can also be designed as a tongue which can be bent over onto the upper side 15 of the flange 13. In these cases, there are a total of three such projections or tongues 14, which are effective both on the outer circumference 16 and on the top 15 of the flange.
  • the U-legs 6 and their ends 17 are also used to increase the stability of the cable lug, to reduce the voltage drop in this transition area and at the same time to secure the nut 12 radially and axially - together with a further tongue-shaped projection 14 on the holding part 8 opposite side of the nut 12 to form.
  • a step-shaped transition 19 is provided between the holding part 4 and the fastening part 8, which has or is in play in the position of use on the outside or the peripheral surface 16 of the flange 13 and in the case of a Z-shaped cross-sectional shape even the edge of the flange 13 could spill over.
  • This also leads to a securing in the radial direction, which prevents the nut from escaping to this side.
  • an opposite tongue-shaped projection 14 it is again achieved that less than half of the outer circumference 16 of the flange 13 remains free between the axial and radial securing means, so that the nut has practically no possibility of being pushed out of this position of use.
  • a tongue from the step-shaped transition 19 20 is partially punched out and bent out so that it starts from the U-transverse web 21 of the fastening part 4, which is higher than the bearing surface, so this continues approximately, the height of the transition 19 being approximately the axial thickness of the flange 13 in the region of its outer edge or circumference 16 corresponds so that this tongue 20 according to the flange 13 in the use position.
  • Fig. 7 also overlaps on the top. It would also be possible to continue to extend the U-legs 6 to the outer circumference 16 of the flange 13.
  • the step-shaped transition 20 has a rounded longitudinal profile oriented in the circumferential direction of the flange 13 and adapted to the circumference 16 of the flange 13 and, with its rounded longitudinal extent, runs along the outside of the flange 13, whereby it can have some play or the flange with so little Force touches that he and the nut 12 remains rotatable for the screwing process, as is the case with the other embodiments.
  • the projection 14 overlapping the flange 13 can be widened in the circumferential direction of the flange 13 in the region above the flange 13 on its upper side 15 facing away from the support surface, this widening according to the exemplary embodiment. 6 is forked or curved in two directions towards the ring course of the flange 13. This widening 22 overlaps about half of the flange circumference, but could also run as a closed ring on the entire upper side 15 of the flange 13 and thereby result in an even better securing of the nut 12 without impairing its rotatability.
  • An effective securing in the radial direction therefore starts from a deformation of the holding part 4, namely from the U-legs 6 extended up to the flange and their ends 17 and / or from the transition 19.
  • the height h of the ends 17 of the U-legs of the holding part 4 running in the axial direction of the screw or nut 12 in the contact area and in the neighboring area of the nut 12 compared to the total height H or cross-sectional length of these U-legs 6 - before it is deformed to pinch the cable 2 - is reduced in such a way that above the flange 13 the circumference of the nut 12 - or a screw head - is also accessible in the region of the holding part 4 for an assembly tool.
  • the nut 12 can thus be held captive in the illustrated embodiments but rotatably for screwing it with a threaded bolt 11, the captivity not being the only advantage of the entire arrangement, but also improving the stability and the voltage drop between the holding part 4 and the fastening part 8 due to the larger material cross section is reduced. Since a nut 12 - or possibly a screw head - with a circumferential flange on the contact surface is used for the screw connection 3, a large contact area can be achieved with a relatively small thread, the for this advantage significant flange 13 can be used to produce the captivity described.
  • the cable lug 1 with screw connection 3 is bent in one piece from a stamped sheet metal part and has a U-shaped holding part 4 and a flat fastening part 8 which forms an eyelet with a hole 9, the screw connection 3 acting on this hole 9.
  • the nut 12 has an annular flange 13, which rests on the eyelet in the position of use and projects radially from its outer circumference, on which at least one projection or a holding tongue 14 can engage in the radial and axial direction, which is integrally connected to the holding part 4 and can be bent relative to the latter .
  • the holding part 4 is so ge and deformed that it extends to the outer periphery 16 of the flange 13 and forms a radial securing, this by a continuation 17 of the U-leg 6 of the holding part 4 to the flange 13 and / or by a approximately step-shaped transition 19 can be accomplished on the U-transverse web of the holding part 4, so that the nut 12 - or a screw head - is fixed in the radial and axial direction but is rotatable.

Landscapes

  • Installation Of Indoor Wiring (AREA)
  • Clamps And Clips (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
EP96119786A 1996-01-25 1996-12-10 Dispositif de serrage pour la connexion électrique d'un câble Expired - Lifetime EP0786827B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19602523A DE19602523C1 (de) 1996-01-25 1996-01-25 Kabelschuh für den elektrischen Anschluß eines Kabels
DE19602523 1996-01-25

Publications (3)

Publication Number Publication Date
EP0786827A2 true EP0786827A2 (fr) 1997-07-30
EP0786827A3 EP0786827A3 (fr) 1997-12-10
EP0786827B1 EP0786827B1 (fr) 1999-09-22

Family

ID=7783579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119786A Expired - Lifetime EP0786827B1 (fr) 1996-01-25 1996-12-10 Dispositif de serrage pour la connexion électrique d'un câble

Country Status (3)

Country Link
EP (1) EP0786827B1 (fr)
DE (2) DE19602523C1 (fr)
ES (1) ES2136934T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021024937A1 (fr) * 2019-08-05 2021-02-11 住友電装株式会社 Connecteur

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29806397U1 (de) * 1998-04-07 1998-06-10 Grote & Hartmann Gmbh & Co Kg, 42369 Wuppertal Kabelschuh
US6126493A (en) * 1998-08-10 2000-10-03 Lear Corporation Electrical fastener
DE10001630A1 (de) 2000-01-17 2001-07-19 Harting Automotive Gmbh & Co Kabelschuh
EP1737072A3 (fr) * 2005-06-21 2008-12-03 Abertax Research And Development Ltd. Système de connexion pour connecteurs de batterie
DE102012215872A1 (de) * 2012-09-07 2014-03-13 Rohde & Schwarz Gmbh & Co. Kg Ausfallsicherungselement sowie Anordnung und Verfahren zur unverlierbaren Montage einer Schraube an einem Kabelschuh
DE102013003802B4 (de) * 2013-03-05 2017-05-11 Leoni Bordnetz-Systeme Gmbh Montageset und Verfahren zur Befestigung eines Kabelschuhs
DE102018203922B4 (de) 2018-03-15 2021-02-04 Volkswagen Aktiengesellschaft Kabelschuh mit definiertem Crashverhalten und Anordnung eines Kabelschuhs
DE102020203619B3 (de) * 2020-03-20 2021-04-01 Volkswagen Aktiengesellschaft Montageset mit einem Kabelschuh und einer Schraubenmutter

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE3624938C2 (de) 1986-07-23 1994-07-14 Bosch Gmbh Robert Verliersicherungs-Anordnung an Zündspulen für Kraftfahrzeuge

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GB1493220A (en) * 1976-10-12 1977-11-30 Pye Ltd Screw or nut and a washer intended to be held captive thereon
GB1585576A (en) * 1978-02-08 1981-03-04 Plessey Co Ltd Electrical connector
US4679888A (en) * 1982-02-05 1987-07-14 Amp Incorporated Electrical terminal and a method of making it
US4905122A (en) * 1989-04-26 1990-02-27 Eaton Corporation Bolt-in circuit breaker with improved terminal fastener retaining structure
DE9412215U1 (de) * 1994-07-28 1994-09-22 Lamson + Sessions GmbH, 58840 Plettenberg Kabelschuh mit Befestigungselement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3624938C2 (de) 1986-07-23 1994-07-14 Bosch Gmbh Robert Verliersicherungs-Anordnung an Zündspulen für Kraftfahrzeuge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021024937A1 (fr) * 2019-08-05 2021-02-11 住友電装株式会社 Connecteur
JP2021026876A (ja) * 2019-08-05 2021-02-22 住友電装株式会社 コネクタ
CN114144941A (zh) * 2019-08-05 2022-03-04 住友电装株式会社 连接器
CN114144941B (zh) * 2019-08-05 2024-03-19 住友电装株式会社 连接器

Also Published As

Publication number Publication date
DE19602523C1 (de) 1997-06-05
EP0786827A3 (fr) 1997-12-10
EP0786827B1 (fr) 1999-09-22
DE59603151D1 (de) 1999-10-28
ES2136934T3 (es) 1999-12-01

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