EP0069803B1 - Battery clamp - Google Patents

Battery clamp Download PDF

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Publication number
EP0069803B1
EP0069803B1 EP81109356A EP81109356A EP0069803B1 EP 0069803 B1 EP0069803 B1 EP 0069803B1 EP 81109356 A EP81109356 A EP 81109356A EP 81109356 A EP81109356 A EP 81109356A EP 0069803 B1 EP0069803 B1 EP 0069803B1
Authority
EP
European Patent Office
Prior art keywords
fact
ring
terminal
battery terminal
compression sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81109356A
Other languages
German (de)
French (fr)
Other versions
EP0069803A3 (en
EP0069803A2 (en
Inventor
Dieter Sander
Norbert Büchele
Karl Kübler
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.)
Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
Original Assignee
Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co 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 Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG filed Critical Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
Priority to AT81109356T priority Critical patent/ATE21191T1/en
Publication of EP0069803A2 publication Critical patent/EP0069803A2/en
Publication of EP0069803A3 publication Critical patent/EP0069803A3/en
Application granted granted Critical
Publication of EP0069803B1 publication Critical patent/EP0069803B1/en
Expired 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
    • 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
    • H01R11/28—End pieces consisting of a ferrule or sleeve
    • H01R11/281—End pieces consisting of a ferrule or sleeve for connections to batteries
    • H01R11/286—End pieces consisting of a ferrule or sleeve for connections to batteries having means for improving contact between battery post and clamping member, e.g. uneven interior surface
    • 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
    • H01R11/28—End pieces consisting of a ferrule or 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
    • 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
    • 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

Definitions

  • the invention relates to a battery clamp with a metallic clamp body in the form of a ring, which on its side facing the center has teeth integrally formed with it, the head surfaces serving as the contact surface forming part of a conical surface, and with a connecting device for one with the clamp connecting electrical conductor.
  • the invention is based on the object of providing a battery terminal which is also suitable for very high currents and which makes it possible, with little effort, to ensure a high contact quality which does not deteriorate, or at least not significantly deteriorates, even over long periods of time.
  • a battery clamp of the type mentioned at the outset in that the part of the clamp body which forms the ring has a radial slot, that a clamping device acts on the ring ends and that the teeth arranged in the region between the radial slot and the point opposite it are inclined with respect to the radial direction in the circumferential direction of the clamp body against the point opposite the radial slot.
  • the teeth Due to their inclined course, the teeth experience a certain elastic deformation when the clamping device is closed. This relatively low tooth suspension is not only sufficient to compensate for large tolerances.
  • the resilient pre-tensioning of the teeth when assembled ensures, above all, that negative influences on contact quality are suppressed by thermal expansion. In addition, this bias counteracts a displacement of the battery terminal and a resulting deterioration of the contact. Thanks to the radial slot of the ring and the clamping device acting on the ring ends, the clamping force required for good contact quality can always be applied regardless of tolerances.
  • the cross section of the annular part of the clamp body which supports the teeth is preferably rectangular in the region of the base of the grooves present between the teeth.
  • This rectangular cross-section also leads to grooves, the longitudinal axis of which runs parallel to the longitudinal axis of the channel formed by the annular part of the clamp body, which is of great advantage for the production of the battery clamp from a drawn profile, but also for the working out of the grooves from an annular body.
  • the cross section of the part of the clamp body forming the ring of a particularly advantageous embodiment decreases from the ring ends towards the point opposite the radial slot. It is particularly advantageous here if the cross section of the ring has a size that results in an at least approximately the same bending stress.
  • connection device for the electrical conductor is also of great importance.
  • the connection device is therefore designed as a compression sleeve with a wall thickness that varies in the circumferential direction.
  • a press sleeve is advantageous in many respects compared to differently designed connection devices. For example, only the usability for aluminum cables and the achievable high contact pressure should be mentioned.
  • a form of the compression sleeve according to claim 5 is particularly advantageous with regard to the manufacturing and assembly effort, because a circular cylindrical longitudinal bore_ of the compression sleeve is particularly favorable in terms of production technology and the compression can be carried out by means of a compression tool having a circular cylindrical compression channel. Since with increasing number of corners of the polygon forming the outer contour of the press sleeve, the differences in the radial pressing become smaller, it is expedient to choose the number of corners not greater than eight.
  • a tight closure of the press sleeve which prevents the contact quality between the press sleeve and the conductor from being impaired by external interference, can be achieved in a particularly simple manner if the press sleeve is designed according to claim 8, since then the inside of the press sleeve lies when pressing End portion of the cable insulation forms a seal.
  • the compression sleeve is formed on one flange coaxially with its through hole, the head of the tensioning screw being located after the section of the sleeve longitudinal bore serving to accommodate the conductor end.
  • the clamp body and the press sleeve are formed by a piece cut to length from a profile bar. This minimizes the manufacturing effort.
  • the rectangular or square outer contour of the compression sleeve, which results when a profile bar is cut to length, is particularly advantageous for a radial compression which differs in the circumferential direction of the conductor when the compression sleeve is pressed round.
  • the round pressing of the pressing sleeve during pressing is also advantageous in that the pressing tool required for this is particularly simple and can be attached to the pressing sleeve in any angular position.
  • a battery connection terminal for establishing a connection suitable for high currents between an aluminum cable 1 and the pole of a battery formed by a conical bolt has a terminal body 2 in the form of a radially slotted ring.
  • a flange 3 is formed on one ring end, and a flange 4 lying parallel to it is formed on the other ring end, between which the radial slot 7 of the clamp body 2 continues outwards.
  • a through hole 5 of the flange 3 is perpendicular with its longitudinal axis on the radially extending central plane of the slot 7 dividing the clamp body 2 and passing through the center of the clamp channel 6 formed by the clamp body 2.
  • the other flange 4 which is provided with a through hole 8 aligned with the through hole 5, is formed on the side facing away from the flange 3 in one piece with a compression sleeve 9, the longitudinal axis of which is aligned with the longitudinal axis of the through hole 8.
  • the material from which these two parts are made is a compressible aluminum.
  • the clamp body 2 and the compression sleeve 9 are cut to length from a drawing profile.
  • the press sleeve 9 therefore has a rectangular outer contour in the uncompressed state, as shown in FIG. 2. It consists of an aluminum alloy that is much harder than the aluminum from which the finely stranded core 11 is made.
  • the inside diameter of the longitudinal bore 10 of the compression sleeve 9 is adapted to the outside diameter of the core 11 of the aluminum cable 1 which is designed as a rope.
  • the inside diameter of the longitudinal bore 10 is matched to the outside diameter of the insulation 12 of the aluminum cable 1. It is then ensured that in a round pressing, in which the compression sleeve receives a substantially circular cylindrical outer surface, as shown in FIG. 3, the compression sleeve in the region of the schematically indicated pressing points 13 not only an optimal contact formation with the core 11 including an optimal compression of this Soul is achieved thanks to the uneven radial compression, but also a completely tight seal in the end portion receiving the insulation 12. From this free end of the compression sleeve 9, no moisture or other external interference can get into the interior of the compression sleeve and to the stripped end section of the core 11.
  • a clamping screw 15 which in the exemplary embodiment is made of stainless steel, and which penetrates the two through bores 5 and 8 of the flanges 4 and 3, respectively. Since the press sleeve 9 is pressed in the area surrounding the head 14 in such a way that a tight seal is formed, no moisture or other interferences can get into the interior of the press sleeve 9 through the through bores 8.
  • Contact grease which is filled into the compression sleeve 9 before pressing, prevents air pockets in the interior of the compression sleeve 9.
  • the clamping screw 15 can not rotate relative to the compression sleeve 9 and the flanges 4 and 3.
  • a nut 16 resting on the side of the flange 3 facing away from the flange 4 can therefore be tightened without having to secure the clamping screw 15 against rotation by means of a tool.
  • the center of the clamping channel 6 formed by the clamp body 2 is, as shown in FIG. 1, offset from the center of the cylindrical outer surface of the clamp body 2 towards the point of the clamp body 2 opposite the slot 7.
  • the cross section of the annular part of the clamp body 2 decreases from the ends carrying the flanges 3 and 4 towards the point opposite the slot 7, in such a way that when the two flanges are clamped together, an approximately equal bending stress of the annular part of the Terminal body is reached.
  • the clamping channel 6 delimit teeth 17, between each of which there is a groove 18.
  • nine teeth are provided.
  • the longitudinal axis of all grooves 18 runs parallel to the longitudinal axis of the clamping channel 6.
  • the cross section of the annular part of the clamp body 2 is therefore a rectangle in the region of the groove base of each groove 18, which leads to the same bending stress over the entire axial length of the clamp body 2.
  • the grooves 18 can be provided on the drawing profile, which is advantageous in that it is then unnecessary to incorporate the grooves 18. But even if the grooves 18 have to be machined in laterally, a position parallel to the longitudinal axis of the clamping channel 6 is advantageous.
  • all the teeth are inclined in the circumferential direction towards this location in relation to the radial direction, which promotes an even contact of all head surfaces 17 on the battery pole because so the teeth 17 can better compensate for tolerances.
  • all the grooves 18, with the exception of the two grooves lying next to the central tooth, are formed with parallel flanks.

Landscapes

  • Connection Of Batteries Or Terminals (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Seal Device For Vehicle (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

1. Battery terminal with a) a metallic terminal body (2) in the shape of a ring having teeth (17) on its centre-facing side which are designed in one piece with the ring and whose crests (17') serving as contact surfaces form a part of a conical surface, and b) with a connecting device (9) for an electric conductor to be connected with the terminal. The battery terminal is characterized by the fact that the part of the terminal body (2) forming the ring is provided with a radial slot (7), that a tensioning device (14, 15, 16) grips in the ring ends, and that the teeth (17) arranged in the zone between the radial slot (7) and the point situated opposite the radial slot are, as compared with the radial direction, inclined in circumferential direction of the terminal body (2) toward the point situated opposite the radial slot (7).

Description

Die Erfindung betrifft eine Batterieklemme mit einem metallischen Klemmenkörper in Form eines Ringes, der auf seiner dem Zentrum zugekehrten Seite einstückig mit ihm ausgebildete Zähne aufweist, deren als Kontaktfläche dienenden Kopfflächen einen Teil einer konischen Fläche bildet, und mit einer Anschlußvorrichtung für einen mit der Klemme zu verbindenden elektrischen Leiter.The invention relates to a battery clamp with a metallic clamp body in the form of a ring, which on its side facing the center has teeth integrally formed with it, the head surfaces serving as the contact surface forming part of a conical surface, and with a connecting device for one with the clamp connecting electrical conductor.

Bei einer bekannten Klemme dieser Art (US-A-1 786 369) ist der Ring vollständig geschlossen und die starren Zähne weisen alle in radialer Richtung gegen das Zentrum des Ringes hin. Dies hat zur Folge, daß die Kontaktverhältnisse sich erheblich verschlechtern, wenn die Batterieklemme sich auch nur geringfügig in Richtung von dem im Durchmesser größeren Ende des konischen Batteriepols zu dem im Durchmesser kleineren Ende hin, beispielsweise infolge von Erschütterungen, bewegt. Daher ist bei dieser Klemme eine gleichbleibend gute Kontaktbildung ebenso wenig gewährleistet wie bei denjenigen bekannten Batterieklemmen, bei denen die Innenmantelfläche des den Batteriepol aufnehmenden Ringes nur durch einen radialen Schlitz unterbrochen ist.In a known clamp of this type (US-A-1 786 369) the ring is completely closed and the rigid teeth all point radially towards the center of the ring. This has the consequence that the contact conditions deteriorate considerably if the battery terminal moves only slightly in the direction from the larger-diameter end of the conical battery pole to the smaller-diameter end, for example as a result of vibrations. Therefore, with this terminal, consistently good contact formation is no more guaranteed than with those known battery terminals in which the inner surface area of the ring receiving the battery pole is only interrupted by a radial slot.

Der Erfindung liegt die Aufgabe zu Grunde, eine auch für sehr hohe Ströme geeignete Batterieklemme zu schaffen, die es ermöglicht, mit geringem Aufwand eine hohe und sich auch über lange Zeiträume hinweg nicht oder zumindest nicht wesentlich verschlechternde Kontaktqualität zu gewährleisten.The invention is based on the object of providing a battery terminal which is also suitable for very high currents and which makes it possible, with little effort, to ensure a high contact quality which does not deteriorate, or at least not significantly deteriorates, even over long periods of time.

Diese Aufgabe wird bei einer Batterieklemme der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß der den Ring bildende Teil des Klemmenkörpers einen radialen Schlitz aufweist, dass an den Ringenden eine Spannvorrichtung angreift und dass die im Bereich zwischen dem radialen Schlitz und der ihm gegenüberliegenden Stelle angeordneten Zähne gegenüber der radialen Richtung in Umfangsrichtung des Klemmenkörpers gegen die dem radialen Schlitz gegenüberliegende Stelle hin geneigt sind.This object is achieved according to the invention in a battery clamp of the type mentioned at the outset in that the part of the clamp body which forms the ring has a radial slot, that a clamping device acts on the ring ends and that the teeth arranged in the region between the radial slot and the point opposite it are inclined with respect to the radial direction in the circumferential direction of the clamp body against the point opposite the radial slot.

Infolge ihres geneigten Verlaufes erfahren die Zähne, wenn die Spannvorrichtung geschlossen wird, eine gewisse elastische Verformung. Diese relativ geringe Federung der Zähne reicht nicht nur aus, um selbst große Toleranzen auszugleichen. Die federnde Vorspannung der Zähne im montierten Zustand gewährleistet vor allem auch, negative Einflüsse auf die Kontaktqualität durch Wärmedehnung zu unterdrücken. Außerdem wirkt diese Vorspannung einer Verschiebung der Batterieklemme und einer daraus resultierenden Kontaktverschlechterung entgegen. Dank des radialen Schlitzes des Ringes und der an den Ringenden angreifenden Spannvorrichtung kann unabhängig von Toleranzen stets die für eine gute Kontaktqualität erforderliche Klemmkraft aufgebracht werden.Due to their inclined course, the teeth experience a certain elastic deformation when the clamping device is closed. This relatively low tooth suspension is not only sufficient to compensate for large tolerances. The resilient pre-tensioning of the teeth when assembled ensures, above all, that negative influences on contact quality are suppressed by thermal expansion. In addition, this bias counteracts a displacement of the battery terminal and a resulting deterioration of the contact. Thanks to the radial slot of the ring and the clamping device acting on the ring ends, the clamping force required for good contact quality can always be applied regardless of tolerances.

Um eine gleichmäßige Biegebeanspruchung des Ringes sicherzustellen, was im Hinblick auf eine gleichmäßige Anlage der Zähne am Batteriepol ebenfalls vorteilhaft ist, ist vorzugsweise der Querschnitt des die Zähne tragenden, ringförmigen Teils des Klemmenkörpers im Bereich des Grundes der zwischen den Zähnen vorhandenen Nuten rechteckförmig. Dieser rechteckförmige Querschnitt führt außerdem zu Nuten, deren Längsachse parallel zur Längsachse des vom ringförmigen Teil des Klemmenkörpers gebildeten Kanalsverläuft, was für die Herstellung der Batterieklemme aus einem Ziehprofil, aber auch für ein Herausarbeiten der Nuten aus einem ringförmigen Körper, von großem Vorteil ist.In order to ensure a uniform bending stress of the ring, which is also advantageous with regard to a uniform contact of the teeth on the battery pole, the cross section of the annular part of the clamp body which supports the teeth is preferably rectangular in the region of the base of the grooves present between the teeth. This rectangular cross-section also leads to grooves, the longitudinal axis of which runs parallel to the longitudinal axis of the channel formed by the annular part of the clamp body, which is of great advantage for the production of the battery clamp from a drawn profile, but also for the working out of the grooves from an annular body.

Um den Materialaufwand und die mit der Spannvorrichtung aufzubringende Spannkraft sowie den Raumbedarf der erfindungsgemäßen Klemme so gering wie möglich zu halten, nimmt der Querschnitt des den Ring bildenden Teils des Klemmenkörpers einer besonders vorteilhaften Ausführungsform von den Ringenden gegen die dem radialen Schlitz gegenüberliegende Stelle hin ab. Besonders vorteilhaft ist es hierbei, wenn der Querschnitt des Ringes eine Größe hat, die eine wenigstens annähernd gleiche Biegebeanspruchung ergibt.In order to keep the cost of materials and the clamping force to be applied with the clamping device as well as the space requirement of the clamp according to the invention as low as possible, the cross section of the part of the clamp body forming the ring of a particularly advantageous embodiment decreases from the ring ends towards the point opposite the radial slot. It is particularly advantageous here if the cross section of the ring has a size that results in an at least approximately the same bending stress.

Für eine hohe und über lange Zeiträume hinweg zumindest annähernd gleichbleibende Kontaktqualität ist auch die Ausbildung der Anschlußvorrichtung für den elektrischen Leiter von großer Bedeutung. Bei einer bevorzugten Ausführungsform ist deshalb die Anschlußvorrichtung als eine Preßhülse mit in Umfangsrichtung variierender Wandstärke ausgebildet. Eine Preßhülse ist in mancherlei Hinsicht gegenüber anders ausgebildeten Anschlußvorrichtungen vorteilhaft. Erwähnt sei hierbei beispielhaft nur die Brauchbarkeit auch für Aluminiumkabel und der erzielbare hohe Kontaktdruck. Eine optimale Kontaktqualität erhält man mit einfachen Mitteln jedoch erst durch die variable Wandstärke der Preßhülse, weil hierdurch beim Verpressen eine unterschiedlich starke radiale Druckbeanspruchung des Leiters erreicht wird, was bei Seilen, und zwar auch bei sehr feindrähtigen Seilen und solchen aus Aluminium, zu einer optimalen Kontaktierung des Seiles und einer optimalen, eine hervorragende Querleitfähigkeit ergebenden Verdichtung des Seiles führt.For a high and at least approximately constant contact quality over long periods of time, the design of the connection device for the electrical conductor is also of great importance. In a preferred embodiment, the connection device is therefore designed as a compression sleeve with a wall thickness that varies in the circumferential direction. A press sleeve is advantageous in many respects compared to differently designed connection devices. For example, only the usability for aluminum cables and the achievable high contact pressure should be mentioned. Optimal contact quality can only be obtained with simple means through the variable wall thickness of the compression sleeve, because this results in a different radial pressure load on the conductor during crimping, which leads to an optimum with ropes, even with very fine-stranded ropes and those made from aluminum Contacting the rope and an optimal compression of the rope resulting in an excellent transverse conductivity.

Hinsichtlich des Fertigungs- und Montageaufwandes besondersvorteilhaft ist eine Form der Preßhülse gemäß Anspruch 5, weil eine kreiszylindrische Längsbohrung_ der Preßhülse fertigungstechnisch besonders' günstig ist und die Verpressung mittels eines einen kreiszylindrischen Preßkanal aufweisenden Preßwerkzeuges erfolgen kann. Da mit zunehmender Anzahl der Ecken des'die äußere Kontur der Preßhülse bildenden Polygons die Unterschiede in der radialen Verpressung geringer werden, ist es zweckmäßig, die Eckenzahl nicht größer als acht zu wählen.A form of the compression sleeve according to claim 5 is particularly advantageous with regard to the manufacturing and assembly effort, because a circular cylindrical longitudinal bore_ of the compression sleeve is particularly favorable in terms of production technology and the compression can be carried out by means of a compression tool having a circular cylindrical compression channel. Since with increasing number of corners of the polygon forming the outer contour of the press sleeve, the differences in the radial pressing become smaller, it is expedient to choose the number of corners not greater than eight.

Einen dichten Verschluß der Preßhülse, der eine Beeinträchtigung der Kontaktqualität zwischen der Preßhülse und dem Leiter durch äußere Störeinflüsse verhindert, läßt sich in besonders einfacher Weise erreichen, wenn die Preßhülse gemäß Anspruch 8 ausgebildet ist, da dann beim Verpressen der im .Inneren der Preßhülse liegende Endabschnitt der Kabelisolation eine Dichtung bildet.A tight closure of the press sleeve, which prevents the contact quality between the press sleeve and the conductor from being impaired by external interference, can be achieved in a particularly simple manner if the press sleeve is designed according to claim 8, since then the inside of the press sleeve lies when pressing End portion of the cable insulation forms a seal.

Sowohl im Hinblick auf den Widerstand, den die Klemme für den zu übertragenden Strom bildet, als auch aus Raum- und Fertigungsgründen ist bei einer bevorzugten Ausführungsform der erfindungsgemäßen Klemme, die sich an die Ringenden anschliessende Flansche aufweist, die mit je einer Durchgangsbohrung zur Aufnahme einer Spannschraube versehen sind, die Preßhülse an den einen Flansch gleichachsig mit dessen Durchgangsbohrung angeformt, wobei im Anschluß an den der Aufnahme des Leiterendes dienenden Abschnitt der Hülsenlängsbohrung der Kopf der Spannschraube liegt. Beim Verpressen der Preßhülse im Bereich des Kopfes dieser Schraube wird die Schraube gegen ein Verdrehen gesichert. Außerdem wird die Preßhülse mit Hilfe des Schraubenkopfes auch an diesem Ende dicht verschlossen.Both in terms of the resistance that the terminal forms for the current to be transmitted, and for space and manufacturing reasons, in a preferred embodiment of the terminal according to the invention, which has flanges adjoining the ring ends, each with a through hole for receiving a Tensioning screw are provided, the compression sleeve is formed on one flange coaxially with its through hole, the head of the tensioning screw being located after the section of the sleeve longitudinal bore serving to accommodate the conductor end. When pressing the compression sleeve in the area of the head of this screw, the screw is secured against twisting. In addition, the compression sleeve is sealed at this end with the help of the screw head.

Bei einer bevorzugten Ausführungsform sind der Klemmenkörper und die Preßhülse durch ein von einem Profilstab abgelängtes Stück gebildet. Hierdurch wird der Fertigungsaufwand minimiert. Außerdem ist die rechteckförmige oder quadratische äußere Kontur der Preßhülse, die sich beim Ablängen von einem Profilstab ergibt, für eine in Umfangsrichtung des Leiters unterschiedliche radiale Verpressung beim Rundpressen der Preßhülse besonders vorteilhaft. Das Rundpressen der Preßhülse beim Verpressen ist auch insofern vorteilhaft, als das hierzu erforderliche Preßwerkzeug besonders einfach ausgebildet ist und in beliebiger Winkellage an die Preßhülse angesetzt werden kann.In a preferred embodiment, the clamp body and the press sleeve are formed by a piece cut to length from a profile bar. This minimizes the manufacturing effort. In addition, the rectangular or square outer contour of the compression sleeve, which results when a profile bar is cut to length, is particularly advantageous for a radial compression which differs in the circumferential direction of the conductor when the compression sleeve is pressed round. The round pressing of the pressing sleeve during pressing is also advantageous in that the pressing tool required for this is particularly simple and can be attached to the pressing sleeve in any angular position.

Im folgenden ist die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels im einzelnen erläutert.The invention is explained in detail below using an exemplary embodiment shown in the drawing.

Es zeigen :

  • Figur 1 das Ausführungsbeispiel teils in Ansicht und teils im Längsschnitt,
  • Figur 2 einen Schnitt nach der Linie II-II der Fig. 1,
  • Figur 3 einen schematisch dargestellten Schnitt entsprechend Fig. 2 nach dem Verpressen.
Show it :
  • 1 shows the exemplary embodiment partly in view and partly in longitudinal section,
  • 2 shows a section along the line II-II of FIG. 1,
  • 3 shows a schematically represented section corresponding to FIG. 2 after the pressing.

Eine Batterieanschlußklemme zur Herstellung einer für hohe Ströme geeigneten Verbindung zwischen einem Aluminiumkabel 1 und dem durch einen nicht dargestellten, konischen Bolzen gebildeten Pol einer Batterie weist einen Klemmenkörper 2 in Form eines radial geschlitzten Ringes auf. An das eine Ringende ist ein Flansch 3, an das andere Ringende ein zu ihm parallel liegender Flansch 4 angeformt, zwischen denen sich der radiale Schlitz 7 des Klemmenkörpers 2 nach außen hin fortsetzt. Eine Durchgangsbohrung 5 des Flansches 3 steht mit ihrer Längsachse lotrecht auf der durch das Zentrum des vom Klemmenkörper 2 gebildeten Klemmkanals 6 gehenden, radial verlaufenden Mittelebene des den Klemmenkörper 2 teilenden Schlitzes 7.A battery connection terminal for establishing a connection suitable for high currents between an aluminum cable 1 and the pole of a battery formed by a conical bolt (not shown) has a terminal body 2 in the form of a radially slotted ring. A flange 3 is formed on one ring end, and a flange 4 lying parallel to it is formed on the other ring end, between which the radial slot 7 of the clamp body 2 continues outwards. A through hole 5 of the flange 3 is perpendicular with its longitudinal axis on the radially extending central plane of the slot 7 dividing the clamp body 2 and passing through the center of the clamp channel 6 formed by the clamp body 2.

Der andere Flansch 4, der mit einer mit der Durchgangsbohrung 5 fluchtenden Durchgangsbohrung 8 versehen ist, ist auf der dem Flansch 3 abgekehrten Seite einstückig mit einer Preßhülse 9 ausgebildet, deren Längsachse mit der Längsachse der Durchgangsbohrung 8 fluchtet.The other flange 4, which is provided with a through hole 8 aligned with the through hole 5, is formed on the side facing away from the flange 3 in one piece with a compression sleeve 9, the longitudinal axis of which is aligned with the longitudinal axis of the through hole 8.

Wegen der einstückigen Ausbildung der Preßhülse 9 mit dem Klemmenkörper 2 ist das Material, aus dem diese beiden Teile bestehen, ein verpreßbares Aluminium. Um die erfindungsgemäße Klemme möglichst kostengünstig herstellen zu können, werden der Kleminenkörper 2 und die Preßhülse 9 von einem Ziehprofil abgelängt. Die Preßhülse 9 hat deshalb im unverpreßten Zustand eine rechteckige Außenkontur, wie Fig. 2 zeigt. Sie besteht aus einer Aluminiumlegierung, die wesentlich härter ist als das Aluminium, aus dem die feindrähtige Seele 11 besteht.Because of the one-piece design of the compression sleeve 9 with the clamp body 2, the material from which these two parts are made is a compressible aluminum. In order to be able to manufacture the clamp according to the invention as inexpensively as possible, the clamp body 2 and the compression sleeve 9 are cut to length from a drawing profile. The press sleeve 9 therefore has a rectangular outer contour in the uncompressed state, as shown in FIG. 2. It consists of an aluminum alloy that is much harder than the aluminum from which the finely stranded core 11 is made.

Der Innendurchmesser der Längsbohrung 10 der Preßhülse 9 ist mit Ausnahme eines Abschnittes am freien Ende der Preßhülse 9 auf den Außendurchmesser der als Seil ausgebildeten Seele 11 des Aluminiumkabels 1 angepaßt. Im Bereich des vorstehend erwähnten Abschnittes ist der Innendurchmesser der Längsbohrung 10 auf den Außendurchmesser der Isolation 12 des Aluminiumkabels 1 abgestimmt. Es ist dann gewährleistet, daß bei einem Rundverpressen, bei dem die Preßhülse eine im wesentlichen kreiszylindrische Außenmantelfläche erhält, wie Fig. 3 zeigt, der Preßhülse im Bereich der schematisch angedeuteten Preßstellen 13 nicht nur eine optimale Kontaktbildung mit der Seele 11 einschließlich einer optimalen Komprimierung dieser Seele dank der ungleichmäßigen radialen Verpressung erreicht wird, sondern auch ein völlig dichter Verschluß in dem die Isolation 12 aufnehmenden Endabschnitt. Von diesem freien Ende der Preßhülse 9 her können also keine Feuchtigkeit oder andere äußere Störeinflüsse in das Innere der Preßhülse und zu dem abisolierten Endabschnitt der Seele 11 gelangen.With the exception of a section at the free end of the compression sleeve 9, the inside diameter of the longitudinal bore 10 of the compression sleeve 9 is adapted to the outside diameter of the core 11 of the aluminum cable 1 which is designed as a rope. In the area of the section mentioned above, the inside diameter of the longitudinal bore 10 is matched to the outside diameter of the insulation 12 of the aluminum cable 1. It is then ensured that in a round pressing, in which the compression sleeve receives a substantially circular cylindrical outer surface, as shown in FIG. 3, the compression sleeve in the region of the schematically indicated pressing points 13 not only an optimal contact formation with the core 11 including an optimal compression of this Soul is achieved thanks to the uneven radial compression, but also a completely tight seal in the end portion receiving the insulation 12. From this free end of the compression sleeve 9, no moisture or other external interference can get into the interior of the compression sleeve and to the stripped end section of the core 11.

In dem sich unmittelbar an den Flansch 4 anschließenden Abschnitt der Preßhülse 9 liegt der Kopf 14 einer im Ausführungsbeispiel aus rostfreiem Stahl bestehenden Spannschraube 15, welche die beiden Durchgangsbohrungen 5 und 8 der Flansche 4 bzw. 3 durchdringt. Da die Preßhülse 9 auch in dem den Kopf 14 umgebenden Bereich so verpreßt wird, daß ein dichter Verschluß entsteht, können auch durch die Durchgangsbohrungen 8 hindurch-:keine Feuchtigkeit oder andere Störeinflüsse in das Innere der Preßhülse 9 gelangen. Kontaktfett, das vor dem Verpressen in die Preßhülse 9 eingefüllt wird, verhindert Lufteinschlüsse im Inneren der Preßhülse 9.In the section of the compression sleeve 9 directly adjoining the flange 4, there is the head 14 of a clamping screw 15, which in the exemplary embodiment is made of stainless steel, and which penetrates the two through bores 5 and 8 of the flanges 4 and 3, respectively. Since the press sleeve 9 is pressed in the area surrounding the head 14 in such a way that a tight seal is formed, no moisture or other interferences can get into the interior of the press sleeve 9 through the through bores 8. Contact grease, which is filled into the compression sleeve 9 before pressing, prevents air pockets in the interior of the compression sleeve 9.

Durch die Verpressung der Preßhülse 9 im Bereich des Kopfes 14, der im Ausführungsbeispiel ein Vierkantkopf ist, aber auch ein Sechskantkopf sein könnte, kann sich die Spannschraube 15 nicht relativ zur Preßhülse 9 und den Flanschen 4 sowie 3 verdrehen. Eine an der dem Flansch 4 abgekehrten Seite des Flansches 3 anliegende Mutter 16 kann deshalb angezogen werden, ohne dabei die Spannschraube 15 mittels eines Werkzeuges gegen ein Verdrehen sichern zu müssen.By pressing the press sleeve 9 in the area of the head 14, which is a square head in the exemplary embodiment, but also a six could be square head, the clamping screw 15 can not rotate relative to the compression sleeve 9 and the flanges 4 and 3. A nut 16 resting on the side of the flange 3 facing away from the flange 4 can therefore be tightened without having to secure the clamping screw 15 against rotation by means of a tool.

Das Zentrum des vom Klemmenkörper 2 gebildeten Klemmkanals 6 ist, wie Fig. 1 zeigt, aus dem Zentrum der zylindrischen Außenmantelfläche des Klemmenkörpers 2 heraus gegen die dem Schlitz 7 gegenüberliegende Stelle des Klemmenkörpers 2 hin versetzt. Dadurch nimmt der Querschnitt des ringförmigen Teils des Klemmenkörpers 2 von den die Flansche 3 bzw. 4 tragenden Enden aus gegen die dem Schlitz 7 gegenüberliegende Stelle hin ab, und zwar derart, daß bei einem Zusammenspannen der beiden Flansche eine annähernd gleiche Biegebeanspruchung des ringförmigen Teils des Klemmenkörpers erreicht wird.The center of the clamping channel 6 formed by the clamp body 2 is, as shown in FIG. 1, offset from the center of the cylindrical outer surface of the clamp body 2 towards the point of the clamp body 2 opposite the slot 7. As a result, the cross section of the annular part of the clamp body 2 decreases from the ends carrying the flanges 3 and 4 towards the point opposite the slot 7, in such a way that when the two flanges are clamped together, an approximately equal bending stress of the annular part of the Terminal body is reached.

Den Klemmkanal 6 begrenzen Zähne 17, zwischen denen je eine Nut 18 liegt. Im Ausführungsbeispiel sind neun Zähne vorgesehen. Die Kopffläche 17' jedes dieser Zähne 17, welche die Kontaktfläche des Zahnes bildet, liegt in der gemeinsamen konischen Fläche, welche an die konische Außenmantelfläche des Poles der Batterie angepaßt ist. Hingegen verläuft die Längsachse aller Nuten 18 parallel zur Längsachse des Klemmkanals 6. Der Querschnitt des ringförmigen Teils des Klemmenkörpers 2 ist deshalb im Bereich des Nutgrundes jeder Nut 18 ein Rechteck, was zu einer gleichen Biegespannung über die gesamte axiale Länge des Klemmenkörpers 2 führt. Außerdem können infolge dieser Lage der Nutlängsachse die Nuten 18 am Ziehprofil vorgesehen sein, was insofern vorteilhaft ist, als dann das Einarbeiten der Nuten 18 entfällt. Aber auch dann, wenn die Nuten 18 nachträglich eingearbeitet werden müssen, ist eine zur Längsachse des Klemmkanals 6 parallele Lage vorteilhaft.The clamping channel 6 delimit teeth 17, between each of which there is a groove 18. In the exemplary embodiment, nine teeth are provided. The top surface 17 'of each of these teeth 17, which forms the contact surface of the tooth, lies in the common conical surface which is adapted to the conical outer surface of the pole of the battery. On the other hand, the longitudinal axis of all grooves 18 runs parallel to the longitudinal axis of the clamping channel 6. The cross section of the annular part of the clamp body 2 is therefore a rectangle in the region of the groove base of each groove 18, which leads to the same bending stress over the entire axial length of the clamp body 2. In addition, as a result of this position of the longitudinal axis of the groove, the grooves 18 can be provided on the drawing profile, which is advantageous in that it is then unnecessary to incorporate the grooves 18. But even if the grooves 18 have to be machined in laterally, a position parallel to the longitudinal axis of the clamping channel 6 is advantageous.

Wie Fig. 1 zeigt, sind alle Zähne mit Ausnahme desjenigen, welcher an der dem Schlitz 7 gegenüberliegenden Stelle vorgesehen ist, in Umfangsrichtung gegen diese Stelle hin gegenüber der radialen Richtung geneigt, was eine gleichmäßige Anlage aller Kopfflächen 17 am Pol der Batterie fördert, weil so die Zähne 17 besser Toleranzen ausgleichen können. Wie die Figur zeigt, sind alle Nuten 18 mit Ausnahme der beiden neben dem mittleren Zahn liegenden Nuten parallelflankig ausgebildet.As shown in FIG. 1, all the teeth, with the exception of that which is provided at the location opposite the slot 7, are inclined in the circumferential direction towards this location in relation to the radial direction, which promotes an even contact of all head surfaces 17 on the battery pole because so the teeth 17 can better compensate for tolerances. As the figure shows, all the grooves 18, with the exception of the two grooves lying next to the central tooth, are formed with parallel flanks.

Sofern die Nuten 18 bereits im Ziehprofil vorhanden sind, müssen nach dem Ablängen des Klemmenkörpers 2 und der Preßhülse 9 vom Ziehprofil nur dem Klemmkanal 6 seine konische Form gegeben sowie die beiden Flansche 3 und 4 und die Preßhülse 9 durchbohrt werden. Der Fertigungsaufwand ist deshalb relativ gering.If the grooves 18 are already present in the drawing profile, only the clamping channel 6 must be given its conical shape after the clamping body 2 and the compression sleeve 9 have been cut to length from the drawing profile, and the two flanges 3 and 4 and the compression sleeve 9 have to be drilled through. The manufacturing effort is therefore relatively low.

Claims (10)

1. Battery terminal with a) a metallic terminal body (2) in the shape of a ring having teeth (17) on its centre-facing side which are designed in one piece with the ring and whose crests (17') serving as contact surfaces form a part of a conical surface, and b) with a connecting device (9) for an electric conductor to be connected with the terminal. The battery terminal is characterized by the fact that the part of the terminal body (2) forming the ring is provided with a radial slot (7), that a tensioning device (14, 15, 16) grips in the ring ends, and that the teeth (17) arranged in the zone between the radial slot (7) and the point situated opposite the radial slot are, as compared with the radial direction, inclined in circumferential direction of the terminal body (2) toward the point situated opposite the radial slot (7).
2. Battery terminal to Claim 1, characterized by the fact that the cross section of that part of the terminal body (2) forming the ring is rectangular in the area of the base of the grooves (18) provided for between the teeth (17).
3. Battery terminal to Claim 1 or 2, characterized by the fact that the cross section of that part of the terminal body (2) forming the ring reduces from the ring ends in the direction of the point situated opposite the radial slot (7).
4. Battery terminal to Claim 3, characterized by the fact that the cross section of the ringshaped part of the terminal body (2) is of a size resulting in an at least approximately uniform bending stress.
5. Battery terminal to one of the Claims 1 to 4, characterized by the fact that the connecting device is designed as compression sleeve (9) with a wall thickness that varies in circumferential direction.
6. Battery terminal to Claim 5, characterized by the fact that the cross section surface of the compression sleeve (9) is, prior to compression, limited externally by a preferably regular polygon which is arranged concentrically to the cylindrical longitudinal bore (10).
7. Battery terminal to Claim 5 or 6, characterized by the fact that the compression sleeve (9) is compressed with the skinned aluminium core (11) of a cable and its insulation (12) to an at least mainly circular-cylindrical outer shape.
8. Battery terminal to one of the Claims 5 to 7, characterized by the fact that the compression sleeve (9) has at least on a part of its length an inside diameter of its longitudinal bore (10) which is adjusted to the outside diameter of an insulated cable and which forms, after compression, a tight seal.
9. Battery terminal to one of the Claims 5 to 8 with flanges (3, 4) adjacent to the ring ends, each one provided with a through-hole (5, 8) for the accommodation of a clamp bolt (15), characterized by the fact that the compression sleeve (9) is fitted in one piece to one of the flanges (4), coaxially with the through-hole (8) of the latter, and that the compression sleeve (9) after compression encloses the head (14) of the clamp bolt (15) tightly in that section of its longitudinal bore (10) which serves for taking up the conductor end (11
10. Battery clamp to one of the Claims 1 to 9, characterized by the fact that the terminal body (2) and the compression sleeve (9) are made of a piece that is crosscut from a sectional bar.
EP81109356A 1981-07-10 1981-10-30 Battery clamp Expired EP0069803B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81109356T ATE21191T1 (en) 1981-07-10 1981-10-30 BATTERY CLAMP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3127284 1981-07-10
DE3127284A DE3127284C2 (en) 1981-07-10 1981-07-10 Battery clamp

Publications (3)

Publication Number Publication Date
EP0069803A2 EP0069803A2 (en) 1983-01-19
EP0069803A3 EP0069803A3 (en) 1983-08-24
EP0069803B1 true EP0069803B1 (en) 1986-07-30

Family

ID=6136602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109356A Expired EP0069803B1 (en) 1981-07-10 1981-10-30 Battery clamp

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EP (1) EP0069803B1 (en)
AT (1) ATE21191T1 (en)
DE (1) DE3127284C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221827C2 (en) * 1992-07-03 1995-07-20 Temic Telefunken Kabelsatz Gmb Electrical clamping arrangement
EP0615311B1 (en) * 1993-03-09 1997-10-29 Sumitomo Wiring Systems, Ltd. Battery terminal
DE102009011934B4 (en) * 2009-03-10 2018-09-20 Auto-Kabel Management Gmbh A method of manufacturing a battery pole terminal and a battery terminal made by the method
DE102023203242A1 (en) 2023-03-21 2024-09-26 Continental Automotive Technologies GmbH Adapter ring for battery terminal and battery terminal
DE102023202491A1 (en) 2023-03-21 2024-09-26 Continental Automotive Technologies GmbH Battery terminal

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US1786369A (en) * 1928-07-30 1930-12-23 Ohio Parts Company Battery-charging connecter

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DE715432C (en) * 1938-04-21 1941-12-22 Bbc Brown Boveri & Cie Electrically conductive sleeve for solderless and screwless connection with stranded conductors
US2548782A (en) * 1946-06-08 1951-04-10 Austin G Goodnight Battery terminal clamp
US2793350A (en) * 1954-05-27 1957-05-21 Walter E Anderson Connector for battery charging jumpers
NL198024A (en) * 1954-07-06
GB1002079A (en) * 1963-03-29 1965-08-25 Amp Inc Improvements in coaxial electrical connectors and in coaxial electrical connections
GB1404182A (en) * 1972-01-15 1975-08-28 Rists Wires & Cables Ltd Terminal clamp
US3996417A (en) * 1974-09-12 1976-12-07 Aluminum Company Of America Cable core grip, electrical cable and connector assembly, and electrical connector kit
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ZA796702B (en) * 1978-12-16 1980-11-26 Lucas Industries Ltd Electric storage batteries
FR2462031A1 (en) * 1979-07-20 1981-02-06 Ermeto Battery terminal lead connection - has clamp ring and insulating screw fitting fully over terminal so overall height is not increased
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US1786369A (en) * 1928-07-30 1930-12-23 Ohio Parts Company Battery-charging connecter

Also Published As

Publication number Publication date
DE3127284A1 (en) 1983-01-27
EP0069803A3 (en) 1983-08-24
EP0069803A2 (en) 1983-01-19
DE3127284C2 (en) 1985-02-21
ATE21191T1 (en) 1986-08-15

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