DE102017215524A1 - Polklemme - Google Patents

Abstract

The invention relates to a pole terminal for providing an electrical contact to a pole (10), whose polar axis (16) defines an axial direction, with a force element and a contact element, wherein the force element which serves to exert a force on the contact element, a Compression area and a force range comprises, the contact element, which serves to provide the electrical contact, a base body having a receptacle for receiving the pole, wherein in the base body a number of joints is provided, the force element and the contacting arranged in such a manner in that the force element at least partially surrounds the contacting element and that the force element and the contacting element are interconnected at least in sections via respective contact surfaces along which the force element and the contacting element move relative to each other when the pole terminal (12) is actuated n.

Description

The invention relates to a pole terminal for a pole, in particular a battery pole, for providing an electrical contact to this pole.

State of the art

Pole terminals are used to make electrical contact to a pole, such as a pole of a battery. If an electrical contact to a battery terminal is to be provided, this is also referred to as a battery pole terminal or battery terminal.

As battery terminals for use in motor vehicles, for example, forged components are used. These forging clamps are very stable, but relatively heavy. Battery pole terminals are also known, which are designed to make electrical contact with conical poles of car batteries, in particular those terminals in which the tightening process is connected during assembly with a tangential sliding movement relative to the pole surface.

It is an object of the invention to provide a pole terminal structure which permits a sliding-resistant fixation of an electrical contact on cone-shaped battery poles. In known pole terminals, it is known that during the tightening process, i. H. after pushing the pole terminal onto the pole and during the actuation of a tightening mechanism, slide the pole terminals out of the pole without any elaborate precautions. Furthermore, it shows that after mounting on the pole, the pole terminals do not generate a sufficiently high clamping force to meet the requirements of the clamping strength.

In this context, it should be noted that the mechanically and electrically reliable contacting of the battery to supply the electrical systems has a safety-relevant significance in automotive applications. In the vehicle manufacturers are battery systems with cone-shaped poles, z. B. according to DIN EN 50342-2 , without the possibility of positive engagement with the contact customer widespread and still required.

A mechanically fixed and simultaneously reversible detachable electrical contacting of such poles must therefore be realized by friction. In addition to the relatively soft and within certain limits malleable lead poles significantly harder poles, z. As poles made of brass, have an increasingly higher market share. The latter complicate a firm frictional contact, since plastic Einformungseffekte, as with lead poles, are hardly feasible. At the same time, the function as an electric current collector greatly restricts the selection of possible materials and surface modifications. Also known is the use of metal materials, such. B. tin-plated Cu or Al alloys, in forging and stamping-bending production.

Particular challenges for the mechanical strength of the pole connection against sliding caused by stresses during operation, such as by vibration, thermal expansion cycles, and in particular by excessive forces during handling and under crash conditions. The latter challenges are formulated as standardized test requirements with regard to torque and pull-off force. These must be guaranteed not only when connecting for the first time, but also after multiple attachments and detachments of the same clamping mechanism. Consequently, the aging of the components must be taken into account.

The terminal mounting on the pole should be uncomplicated and fast to accomplish. This means, in particular, the use of standard tools, such as screwdrivers, the use of only one operating element, such as. A screw or a lever, with reasonable manual forces and moments for their operation and no complex positioning or holding aids. Finally, the correct fit after tightening by easily visible optical criteria, eg. B. in terms of gap width, lever position, terminal seat on the pole, be verifiable.

The Zuziehvorgang itself often leads in practice to partial to complete slipping of the terminal from the pole. The reason for this lies in the conical shape of the pole, which always draws a force component in sliding Polachsrichtung at clamping forces F _A perpendicular to the pole axis in addition to the surface-normal contact forces. It is on this 1 directed.

The mechanical clamping strength can be optimized by maximum contact forces at maximum friction coefficients at the pole contact surfaces. The challenge here is the realization as a compact mechanism, which also in lightweight construction, z. B. with sheet materials, can be displayed, for example. By addition of a tangential looping.

Against the background of these requirements, a division of the functions Anpresskraftaufbringung and electrical or mechanical Polkontaktierung on two separate components: clamping force component, hereinafter also referred to as a force element, and Kontaktierkomponente, hereinafter also referred to as an intermediate element known.

Due to the structural division into two coordinated design elements, the respective properties can be optimally optimized by material and geometry design. In the foreground were so far the electrical terminal resistance, namely design Kontaktierkomponente, and the mechanical clamping strength, namely design clamping force component.

The publication EP 2 333 905 A1 describes a battery terminal that is used to make electrical contact with a battery post, with an inner shell and an outer shell. The inner shell is designed as a contact clip. The outer shell is used for mechanical stabilization and assumes additional functions, such as. A rotation of a screw, a captive mother, a stabilization of a departure plate, a recording of a connection box, a label of battery poles u. ä.

Disclosure of the invention

Against this background, a pole terminal according to claim 1 is presented. Embodiments emerge from the dependent claims and from the description.

The presented pole terminal serves to provide an electrical contact to a pole. The pole axis or central axis of the pole defines an axial direction. The pole terminal comprises a force element and a contact element. The force element, which serves to transmit a force to the contact element, comprises a compression region and a force region. The contact element serves to provide the electrical contact to the battery pole, to ensure the current transport and to make the mechanical friction contact with the pole surface and the contact surface to the force element. It has a base body which has a receptacle for receiving the pole, wherein a number of parting lines are provided in the base body. These joints, which are typically substantially in the axial direction, d. H. are aligned substantially parallel to the pole axis, when the contacting is arranged on the pole, facilitate the deformation of the contacting, as soon as the pole terminal is actuated, d. H. when the force element transmits an introduced force to the contacting element. During this actuation, the contacting element or the segments of the contacting element which are formed between the parting lines conforms to the pole. The segments are pressed against the pole, without causing the segments to slide over the pole surface.

In the presented pole terminal, the force element and the contact element are arranged to each other such that the force element at least partially surrounding the contact element and that the force element and the contact element are at least partially connected to each other via respective contact surfaces along which the force element and the contact element upon actuation of the pole terminal itself move relative to each other. This means that upon actuation or closing of the pole terminal takes place a relative movement between the force element and contacting element, typically a sliding movement along the facing contact surfaces.

With the presented pole terminal, at least in some of the embodiments, the problems mentioned above can be solved. The assembly process is simplified by reducing the tendency to slip, the resistance to external pull-off forces or twisting torques is increased. In particular, the pole terminal described also allows the realization of a corresponding pole terminal with sheet metal bending components.

The presented pole terminal is based on the functional division into two design elements, namely a force element and a contacting element. Basically, a one-piece or one-piece or a multi-part, in particular a two-part construction is possible. Both components can also consist of several subcomponents. The pole terminal goes beyond the state of the art in the coordination of the two design elements by specifying the aspects of contact geometry and friction: Constructive measures are described which address the fitting behavior during assembly as well as the resulting sliding behavior and thus the reliable provision of the necessary Clamping strength and electrical contact.

It is thus described the design of a pole terminal, which can be easily positioned on the pole and mount without sliding and simultaneously optimizes the clamping connection in terms of their mechanical clamping strength and their electrical contact resistance, the disadvantages mentioned above, at least in some of Designs, to be avoided. Such a pole terminal can be realized in particular from sheet metal bending components.

Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.

It is understood that the features mentioned above and those yet to be explained not only in the combination given, but also in other combinations or alone, without departing from the scope of the present invention.

list of figures

• 1 shows a pole with Polklemme to illustrate the force on contact surfaces.
• 2 an embodiment of a contacting element.
• 3 shows a schematic representation of a geometric design of a contacting, which compensates a cone shape of a pole relative to a force element.
• 4 shows a further embodiment of the presented pole terminal.
• 5 shows a Polklemme that works on the pliers principle.
• 6 shows a Polklemme that works on the train principle.

Embodiments of the invention

1 shows a pole 10 that with a pole clamp 12 will be contacted. For this purpose, a clamping force F _A 14 applied perpendicular to the polar axis 16 , which is defined by the central axis of the pole is directed. The conical shape of the pole results in addition to the surface normal contact force F _N 18 also a force component in sliding Polachsrichtung, the so-called Abgleitkraft F _T 20 , This must in many cases by a holding force F _H 24 be compensated.

2 shows on the left side an embodiment of a contact element, the whole with the reference numeral 50 is designated. This contacting element 50 includes a main body 52 which encloses a receptacle which is not recognizable in this representation, since it lies inside. For making the electrical contact, the contacting element 50 so put over a pole, that this is included in the recording. In the main body 52 are parting lines 54 provided substantially in the axial direction, ie substantially parallel to the pole axis (reference numeral 16 in 1 ). Furthermore, the figure shows a derivative 56 for dissipating electrical current, in this case on the body 52 is formed.

On the right side of the 2 is the contact element 50 that of a force element 60 is surrounded. This force element 60 serves to be able to initiate a force, with this force on the contact element 50 is transferred so that it rests securely on the pole and a good electrical contact, a contact with low contact resistance, is provided. The force on the force element 60 can be initiated in different ways. This can, for example, according to the pliers principle via lever or train principle, for example. With a screw, so that a tangential tensile force is initiated, be realized.

The dividing lines 54 facilitate deformation of the contacting element 50 during assembly, in particular during fixing by introducing a force on the force element 60 ,

3 illustrates measures for compensating the cone shape of the pole and shows in a schematic representation on the left side of a pole 100 to which a contacting element 102 which is in turn of a force element 104 is surrounded or embraced. Between the force element 104 and the contacting element 102 is a first friction or contact surface 110 educated. Between the contact element 102 and the pole 100 is a second friction or contact surface 112 educated. In one embodiment, it is now provided that by selecting the materials and / or by processing or treating the surfaces of the components at the first contact region 110 There is less friction than at the second contact area 112 in order in this way to slide the contacting element 102 from the pole 100 to prevent during assembly. Furthermore, in the figure, a possible design for current dissipation and power dissipation from the terminal contact to the connected electromechanical system (not shown) indicated. In this case, the external forces and moments generated by the pickup system are based (arrows 116 . 114 ) via the contacting element 102 right on the pole 100 from. Likewise, the electric current through the contact element 102 between pole 100 and external system. The indicated positive engagement in the axial direction between the illustrated Abgangsausführung and the force element also acts as an axial fixation of the force element against slipping.

It may be in an embodiment measures for fixing the force element 104 be provided during assembly. Fixing here means securing against axial slipping and / or securing against twisting, for example by means of positive locking measures.

The illustration also shows on the right side in section a specially trained contacting 120 with a correspondingly formed force element 122 , Due to the concave shape of the contact surface 124 of the contacting element 120 and the corresponding convex shape of the contact surface 126 of the force element 122 results in a curved contact area 128 , which is a relative movement of contacting element 120 and force element 122 in the axial direction and thus prevents slipping.

In 4 a further embodiment of the terminal post is shown, the total with the reference numeral 150 is designated. The illustration shows the contact element 152 with a derivative 154 , which is a force element 156 is surrounded. At the upper boundary edge of the force element 156 are two extensions 158 formed, which is a twisting of the contacting element 152 prevent.

5 shows a pole 200 that of a contact element 202 is surrounded. To the contact element 202 in contact with the pole 200 to bring is a force element 204 provided that works in this case on the pliers principle and the contacting 202 encloses or wraps around. The force element comprises a force range 206 and a compression area 208 , in this case a gap. With two levers 210 becomes the force element 204 closed, ie the compression area 208 shrinks and the force range 206 of the force element 204 pushes in the radial direction inwards on the contact element 202 , which then deforms and to the pole 200 clings without causing a sliding movement between the surface of the pole 200 and contact surface of the contacting, the Pol 200 is facing, comes.

The compression area 208 is shown here as a gap. Alternatively, this may also be an area in which a material other than in the force range is used and / or a lower material thickness than in the force range is used.

6 shows another pole 250 that of a contact element 252 surrounded by a force element 254 is entwined. This also consists of a force range 256 and a compression area 258 for the same as for the compression area 20 out 5 is true. By pressing a screw 260 becomes the compression area 258 compressed and the force region exerts a tensile force in the tangential direction, which causes a force in the radial direction of the contact element 252 is exercised, so that this at the Pol 250 snugly. The possibly occurring thereby by Zugdeformation in the circumferential direction tangential relative movements of the contact surfaces of the force element 254 relative to the pole 250 should be mainly as a relative sliding between force element 254 and contact element 252 affect and not as friction-induced tangential relative movement between contacting 252 and pole surface. This is particularly supported by the force element 254 and the contacting element 252 are formed such that the friction between the contacting 252 and the force element 254 lower than the friction between the contacting element 252 and the surface of the pole 250 ,

The presented pole terminal comprises all embodiments of the force element in which the clamping force structure is connected to a □ lächigen relative movement between the contact surface of the force element and pole surface. These include in particular force elements that are based on the principle of wrap. The structure of a force normal to Polachse force occurs here by actuation of a tightening mechanism, such as by pulling or clamping a loop, whereby the structure of a tangential stress in the loop an associated elongation and thus a relative movement between the loop and pole surface with respect to the circumferential angle, a so-called longitudinal sliding, connected is. In particular, in the case of a diagonal screw as a tightening mechanism it comes in addition to the elongation also to a shear and thus connected to a sliding.

The presented pole terminal can have the following characteristics in design, which can occur in any combination.

Contacting element with joints in the contact area

The contact element is at least in the region of the force element contact along the circumferential direction by interrupting the structural material cohesion, divided by so-called parting lines, in at least two contact sections or contact segments, so-called contact fingers, wherein the contact segments may belong to the same or to several separate sub-components. In this way, the radial positions and deformations of the individual contact segments in the clamping contact region are largely decoupled from each other in terms of power. Thus, the normal to the pole axis portions of the contact force generated by the external force element on the outside of the contacting substantially largely passed without weakening by structural deformation forces as the contact pressure of the contacting on the pole surface. In particular, this radial polar variations in the contact of the pole surface can be compensated by the contact segments with minimal contact force losses. Conversely, the necessary withdrawal forces during disassembly of the terminal from the pole after release of the force element are determined only by the elastic residual contact forces between the pole and contact fingers.

• 1a) Bei der Montage werden durch axiales Aufschieben des Kontaktelements auf den Pol die Kontaktfinger durch Abgleiten auf der konischen Polober□äche radial nach außen bewegt und die Dehnfugen dadurch in Umfangsrichtung geweitet. Vorteil: Vorfixierung durch elastische Klemmkräfte, die ein Verrutschen der Klemme durch die beim anschließenden Anziehen des Kraftelements wirkenden äußeren Kräfte erschweren.
• 1b) Durch das Anziehen des Kraftelements bei der Montage werden die Kontaktsegmente in radialer Richtung auf die Polober□äche hinbewegt und noch offene innere Kontakte zwischen Pol und Zwischenelement dadurch geschlossen. Das erfordert die Auslegung der Trennfugen als hinreichend breite Schrumpffugen.

Depending on the desired behavior during assembly, two types of joints can be used as expansion joints or as shrink joints distinguish and optimize in their respective function. Depending on the optimization of the overall design for the assembly process, both variants can occur together or exclusively:

• 1a) During assembly, the contact fingers are moved by sliding axially on the conical Polober □ surface radially outwards by axial sliding of the contact element on the pole and the expansion joints thereby widened in the circumferential direction. Advantage: Pre-fixing by elastic clamping forces, which make it difficult for the clamp to slip due to the external forces acting on the subsequent tightening of the force element.
• 1b) By tightening the force element during assembly, the contact segments are moved in the radial direction on the Polober □ ache and still open inner contacts between the pole and intermediate element thereby closed. This requires the design of the joints as sufficiently wide shrinking joints.

Coupling of the tangential movement between the force element and pole of the intermediate element.

• 2a) Die innere Reibung µ_i zwischen Kontaktierelement und Polfläche ist großer als die entsprechend zu gestaltende äußere Reibung µ_a zwischen Kraftelement und Kontaktierelement. Dies geschieht bspw. durch konstruktive Maßnahmen, wie z. B. durch die Wahl von Werkstoff, Beschichtung, Rauigkeiten, Verwendung von Schmierstoffen. Damit wird ermöglicht, dass das Klemmkraftelement während des Anzugsprozesses auf der Außenseite des Kontaktierelements großflächig gleiten kann, während gleichzeitig die Kontaktierung an der Poloberfläche im oder nahe am Haftzustand bleibt. Mit einer generellen Minimierung von µ_a kann darüber hinaus sogar der Anteil der vom Zuzugsmechanismus aufgebrachten Tangentialkraft minimiert werden, der von der tangentialen Reibvorspannung im äußeren Reibkontakt kompensiert wird. Dadurch steht ein höherer Kraftanteil für die strukturmechanische Umleitung als Normalkraft in den inneren Kontakt zur Verfügung. Mit einer davon unabhängigen generellen Maximierung von µ_i kann die Halbtreibkraft maximiert werden, die nach der Montage zum Abgleiten des Zwischenelements vom Pol zu überwinden ist.
• 2b) Durch eine in entsprechender Richtung abgerundete geometrische Gestaltung der Kontaktfinger zusammen mit einer konstruktiven Drehmöglichkeit der Finger um die jeweilige Rundungsachse kann die tangentiale Zuziehbewegung des Kraftelements bei der Montage in eine Abroll-Bewegung der Kontaktfinger auf der Poloberfläche umgesetzt werden. Die Kinematik des Abrollens kann insbesondere durch den axialen Verlauf von Kontakt□ächenradien und Dicke der Kontaktfinger an die Zuziehbewegung des Kraftelements angepasst und auf eine optimale Druckverteilung am Ende des Montageprozesses hin optimiert werden.
• 2c) entsprechend 2b, jedoch befindet sich zwischen Kontaktfinger und Poloberfläche eine zusätzliche Pressfläche des Kontaktelements, auf dessen Außenseite die Kontaktfinger abrollen und dessen Innenseite den eigentlichen Reibschluss zur Poloberfläche herstellt. In dieser Weise wird eine strukturelle Trennung entsprechend den Teilfunktionen „Abstützen der äußeren Kräfte am Pol“ und „Entkopplung von Tangentialkräften zwischen Kraftelementkontakt und Polkontakt“ eingeführt, die eine weitergehende konstruktive Optimierung der Teilfunktionen im Vergleich zu Punkt 2b ermöglicht.

During the tightening process, the contactors should slide as little as possible or not at all on the pole surface after being pushed onto the pole cone. This can be achieved by the following properties, which can occur individually or in combination:

• 2a) The internal friction μ _i between the contacting element and the pole face is greater than the corresponding external external friction μ _a between the force element and the contacting element. This happens, for example. By constructive measures such. B. by the choice of material, coating, roughness, use of lubricants. This makes it possible for the clamping force element to slide over a large area on the outside of the contacting element during the tightening process, while at the same time the contacting at the pole surface remains in or near the adhesion state. In addition, with a general minimization of μ _a , even the proportion of the tangential force applied by the feed mechanism can be minimized, which is compensated by the tangential frictional bias in the outer frictional contact. As a result, a higher proportion of force is available for the structural mechanical diversion as a normal force in the inner contact. With an independent general maximization of μ _i , the half-drive force can be maximized, which must be overcome after assembly to slide the intermediate element from the pole.
• 2b) By a rounded in a corresponding direction geometric design of the contact fingers together with a constructive rotation possibility of the fingers around the respective rounding axis, the tangential closing movement of the force element can be implemented during assembly in a rolling movement of the contact fingers on the pole surface. The kinematics of unwinding can be adjusted in particular by the axial course of the contact surface radii and the thickness of the contact fingers to the closing movement of the force element and optimized for optimum pressure distribution at the end of the assembly process.
• 2c) according to FIG. 2b, however, an additional pressing surface of the contact element is located between the contact finger and the pole surface, on the outer side of which the contact fingers roll and whose inner side produces the actual frictional connection with the pole surface. In this way, a structural separation according to the sub-functions "supporting the external forces at the pole" and "decoupling of tangential forces between force element contact and pole contact" is introduced, which allows a more constructive optimization of the sub-functions compared to point 2b.

Measures for fixing the force element in the axial pole direction during the tightening process

• 3a) Das innere Kontaktelement kompensiert geometrisch die Konusform des Pols gegenüber der Kontakt□läche des äußeren Klemmkraftelements. Auf der Außenseite des Kontaktierelements können dadurch Klemmkräfte normal zur Polachse aufgebracht werden, ohne dass das entsprechende äußere Klemmkraftelement eine axiale Kraft in abgleitender Richtung erfährt. Insbesondere ist aus Toleranzgründen auch eine Überkompensation möglich und sinnvoll, die unter Anzugsbedingungen eine zum Polboden gerichtete Nettokraft auf das äußere Kraftelement generiert.
• 3b) Das innere Kontaktelement stellt geometrisch in axialer Polrichtung einen Formschluss mit dem äußeren Kraftelement her, bspw. durch eine Halteklammer, eine Stufe, eine umgekehrte Konusform oder eine Nut. Dadurch wird ein axiales Abgleiten des Kraftelements beim Anziehprozess und im Klemmzustand verhindert, während ein tangentiales Gleiten weiterhin möglich bleibt. Der Formschluss kann ausdrücklich auch durch die in Punkt 4 nachstehend geforderten Klemmabgänge dargestellt werden. insbesondere durch einen Klemmabgang an der Poloberseite.

Due to the special geometry of the inner contacting element, the sliding of the outer force element in the axial pole direction during the infeed is to be prevented. This can be done by two measures:

• 3a) The inner contact element geometrically compensates the cone shape of the pole with respect to the contact surface of the outer clamping force element. Clamping forces normal to the polar axis can thereby be applied to the outside of the contacting element, without the corresponding external clamping force element experiencing an axial force in the sliding-down direction. In particular, for tolerance reasons, overcompensation is possible and useful, which generates a net force directed to the bottom of the pole under tightening conditions on the external force element.
• 3b) The inner contact element provides geometric in the axial pole direction a positive connection with the outer force element ago, for example. By a retaining clip, a step, a reverse cone shape or a groove. As a result, an axial sliding of the force element during the tightening process and in the clamping state is prevented, while a tangential sliding remains possible. The fit can be express also be represented by the terminal outlets required in point 4 below. in particular by a terminal outlet on the pole top.

Design of the contact element for current dissipation and initiation of the mechanical loads

The contacting element has above and / or below the Anpressbereichs a departure for the current dissipation and for introducing the outer mechanical loads. In this way, the latter are supported via the contact with the pole directly on the pole. The battery currents must then pass only the contact resistance between the pole and contact element. Both can be specifically optimized by constructive design of the inner contact surface of the intermediate element, so that the contact friction is maximum and the contact resistance is minimal.

Positive rotation of the force element on the contact element

The contacting element contains a constructive expression. which serves as a positive rotation of the force element about the pole axis relative to the contact element. Such a support contact can be realized for example by one or more axial extension on the upper or lower boundary edge of the contacting, which are supported in corresponding recesses of the intermediate element against rotation. The support can also be made directly at the terminal outlet.

Positioning aid in the axial sliding of the contact element on the pole

The contacting contains constructive forms for support on the bottom of the pole and / or for support on the top as a stop when sliding the terminals on the pole. Both act individually or in combination as a positioning aid of the terminal in Polachsrichtung. This simplifies the control of the assembly process with regard to the seat height and the paraxial alignment of the clamp.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2333905 A1 [0013]

Cited non-patent literature

• DIN EN 50342-2 [0005]

Claims (10)

A pole terminal for providing an electrical contact with a pole (10, 100, 200, 250) whose polar axis (16) defines an axial direction, with a force element (60, 104, 122, 156, 204, 254) and a contact element (50 , 102, 120, 152, 202, 252), wherein the force member (60, 104, 122, 156, 204, 254) for applying a force to the contacting member (50, 102, 120, 152, 202, 252), a compression portion (208, 258), and a force portion (206, 256), the contacting element (50, 102, 120, 152, 202, 252), which serves to provide the electrical contact, has a base body (52) which has a receptacle for receiving the pole, wherein in the base body (52) a number of separating joints (54) is provided, the force element (60, 104, 122, 156, 204, 254) and the contacting element (50, 102, 120, 152, 202, 252) are arranged relative to one another such that the force element (60, 104, 122, 156, 204, 254) at least in sections surrounds the contacting element (50, 102, 120, 152, 202, 252) and that the force element (60, 104, 122, 156, 204, 254) and the contacting element (50, 102, 120, 152, 202 , 252) are connected to each other at least in sections via respective contact surfaces, along which the force element (60, 104, 122, 156, 204, 254) and the contacting element (50, 102, 120, 152, 202, 252) during actuation of the pole terminal ( 12, 150) move relative to each other. Pole clip after Claim 1 in which the parting lines (54) of the contacting element (50, 102, 120, 152, 202, 252) are aligned substantially in the axial direction. Pole clip after Claim 1 or 2 in that the force element (60, 104, 122, 156, 204, 254) and the contacting element (50, 102, 120, 152, 202, 252) are designed such that the friction between the contacting element (50, 102, 120 , 152, 202, 252) and the force element (60, 104, 122, 156, 204, 254) is lower than the friction between the contacting element (50, 102, 120, 152, 202, 252) and the surface of the pole ( 10, 100, 200, 250). Pole clamp after one of Claims 1 to 3 in which, by shaping the force element (60, 104, 122, 156, 204, 254) and / or the contacting element (50, 102, 120, 152, 202, 252), a compensation of the conical shape of the pole (10, 100, 200 , 250) is reached. Pole clamp after one of Claims 1 to 4 in which the force element (60, 104, 122, 156, 204, 254) works according to the forceps principle. Pole clamp after one of Claims 1 to 5 in which the force element (60, 104, 122, 156, 204, 254) operates on the train principle. Pole clamp after one of Claims 1 to 6 in which measures for fixing the force element (60, 104, 122, 156, 204, 254) are provided during assembly. Pole clamp after one of Claims 1 to 7 in which the contacting element (50, 102, 120, 152, 202, 252) has a discharge line (56, 154) for conducting current Pole clamp after one of Claims 1 to 8th , in which a positive rotation is provided. Pole clamp after one of Claims 1 to 9 in which a positioning aid is provided.

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