EP1746686B1 - Electrical terminal - Google Patents

Abstract

The socket has a circular connection plate (12) with a central opening for attaching the socket on a ground pin (30). An attachment region (16) for an electrical conductor is longitudinally elongated in a radial direction with respect to the connection plate. An anti-twist device (22) interacts with the ground pin running through the central opening. Locking recesses (17-19) are provided at the connection plate external-laterally by the central opening, where the locking recesses serve for locking of the two sockets with each another. An independent claim is also included for a combination of two electrical cable sockets with circular connection plates.

Description

The present invention relates to an electrical connection element for connecting an electrical conductor to a bolt, in particular a ground bolt. Such connection elements are also referred to as cable lugs. Among other things, they are frequently used in motor vehicles, wherein usually several such connection elements are connected to a common ground bolt.

Cable lugs are known from the prior art, in which for connecting the electrical conductor to the connection element, a groove-like elongated receiving area with raised wall areas, in which the electrical conductor can be attached by producing a crimp connection. For connecting the connecting element to the above-mentioned ground bolt is often used in known from the prior art cable lugs an opening with which the cable lug can be plugged onto the ground bolt, said opening is generally arranged centrally in a connection plate, which is located on the long elongated receiving area connects.

The ground bolt is usually provided with a thread on which a nut can be screwed after one or more lugs have been plugged with their aforementioned opening on the bolt. If several lugs on top of each other are to be plugged onto a same ground bolt, so you assigns them for reasons of space preferably radially offset from each other. The assembly of individual lugs with the already crimped on it conductors on the ground bolt but can be troublesome and time-consuming just in a motor vehicle due to the prevailing narrowness. In particular, when several lugs to be attached to the bolt, but even in the attachment of a single lug, also the problem arises that the cable lug is tightened when tightening the nut by the resulting friction also with respect to the bolt, which is not desirable is, because in the worst case this can lead to the fact that the electrical conductor comes loose from the crimped connection.

From the prior art connection elements of the type mentioned are already known, which are provided with locking elements, which serve to connect two axially mutually arranged connection elements rotatably with each other.

So revealed the EP-A-0 663 703 a connection element according to the preamble of claim 1. From the US-A-5 759 056 is also a connection element is known, which has latching elements which are rotatably locked with corresponding latching elements of a further connection element.

It is therefore an object of the present invention to provide an electrical connection element of the type mentioned above, which enables an electrically and mechanically reliable mounting of several connection elements on a bolt in an accelerated and simplified manner. In particular, it should be avoided that the cable lug is also rotated when tightening the nut by the resulting friction with respect to the bolt.

This object is achieved by an electrical connection element according to claim 1. According to the invention, the connection element has an anti-twist device which is suitable for interacting with the bolt passing through the central opening.

The locking elements provided on the outside of the central opening may be designed differently, but all have in common, regardless of the specific embodiment, that when two identical or provided with each corresponding locking elements connecting elements are set axially against each other, the locking elements of the two connection elements lock together. A twisting of the two connection elements against each other is then no longer possible. The locking of the connecting elements together can be made before placing them on the ground bolt, so that the subsequent mounting on the bolt can be done in a single step.

Preferred embodiments of the invention are described in the subclaims and in the description which follows, as well as the description of the attached figures.

According to a particularly preferred embodiment of the invention, the rotation of one of the locking elements is formed. The rotation of the connection element relative to the bolt passing through the central opening is thus prevented by a latching element which simultaneously serves to latch two electrical connection elements together. At least one of the latching elements, which can latch with corresponding latching elements on a second connection element, thus has a double function. In this embodiment of the invention, no specially designed connection element is necessary which makes the non-rotatable connection with the bolt, but the connection elements can all be of the same design and, depending on their location with respect to any other connection elements, either a rotationally fixed connection with an overlying or underlying other connection element or a rotationally fixed connection with the bolt.

The latching elements preferably have latching recesses, wherein these latching recesses may comprise latching lugs formed radially outwardly. By such locking recesses - with or without locking lug formed therein - corresponding locking elements, which are formed on another connection element, are inserted therethrough. The latching lugs formed in the latching recesses offer numerous possibilities for producing a latching connection with a further connecting element.

The locking elements may also comprise locking recesses arranged in axially projecting and provided with an opening locking projections. Such projections can then engage, for example, in recesses in an underlying or overlying connection element, and in this way produce a rotationally fixed connection between two connection elements. The opening in the latching projections may in turn serve to receive a radially outwardly facing latching lug, as mentioned above, so that even with latching recesses, which have such a latching lug, a stable rotationally fixed connection can be made.

According to a further preferred embodiment of the invention, in each case two identically designed latching elements are arranged symmetrically with respect to an axial center extending through the central opening thereof on the connection plate. If, for example, two or three different types of latching elements are formed in the connection plate of a connection element, this symmetrical arrangement of the latching elements means that two identical connection elements can be plugged on one another in as many different angular positions as possible and locked in rotation with each other.

Preferably, various, at a certain angle radially offset from one another arranged latching elements are provided on the connection plate, wherein when two identical connection elements are radially offset from each other by this angle axially offset, the locking elements of the two connection elements are locked together. For example, two different types of locking elements to form a cross in each case be arranged opposite one another, so that in each case two different locking elements adjacent to each other and offset by an angle of 90 ° to each other. The latching elements can be designed so that when two such connection elements are offset from one another by 90 ° to each other, each lock the then superposed different locking elements together.

According to a further preferred embodiment of the invention, a plurality of locking elements, in particular six or eight locking elements, arranged at uniform intervals between two adjacent locking elements concentrically around the central opening of the connecting plate.

The angle at which the adjacent latching elements are radially offset from one another is then also the same in each case. As a result of the uniform distances, as in the case described above, connecting elements which are radially offset from one another by a suitable angle, for example the offset angle between adjacent latching elements, can be placed on top of one another such that their respective latching elements come to rest on one another and thus latch together. With a suitable arrangement and choice of locking elements can be selected in this embodiment from a variety of different angular positions for successive inserted and rotatably locked together connection elements.

According to a preferred embodiment of the invention, various types of locking elements, in particular two or three different types of locking elements are provided. For example, two different types of locking elements can be provided, which are each arranged alternately with uniform spacing between two adjacent locking elements concentrically around the central opening of the connecting plate.

According to a particularly preferred embodiment of the invention, a plurality of rotationally symmetrically arranged, substantially identically shaped latching recesses are formed in the connection plate, which either taken alone or together with a latching lug or a latching projection form a latching element. This type of locking elements allows compatibility of different types of locking elements each with each other. For example, a latching element, which consists solely of a latching recess, with a second latching element, which is formed from a similar recess with a latching projection, lock.

According to a further preferred embodiment of the invention, locking tongues can be formed on the outside at the central opening of the connection plate, which have radially inward and form latching elements. Of course, this is only possible if the diameter of the central opening, at least in the areas in which the latching tongues are formed, is greater than the diameter of the bolt on which the connection plate is plugged, otherwise the latching elements would prevent the plugging onto the bolt , For example, if a cross-shaped opening is provided in the connection plate, latching tongues may be formed on the outside in the end regions of the arms of the cross, which nevertheless permit the attachment of the connection element on the bolt, and allow latching with a further connection element.

According to an advantageous embodiment of the invention, the rotation can be formed on the outside of the connection plate integrally formed elastic gripping tongues. These can for example be brought to bear against the outside of a foot of a bolt and thus prevent twisting of the connecting element with respect to the foot.

The receiving region for the electrical conductor is preferably substantially channel-shaped and has raised wall regions for producing a crimp connection. These wall portions are pressed down during the crimping process in the channel-shaped receiving area, so that the conductor is clamped in this.

Such a receiving area allows a simple and quick installation of an electrical conductor to the connection element and is also relatively easy to manufacture.

The connecting element is preferably formed in one piece, in particular it may be formed from a metal sheet. The one-piece design of the connection element enables a favorable mass production of connection elements.

The invention also relates to a combination of a first electrical connection element according to claim 1 with a second electrical connection element. According to the invention, the second electrical connection element, like the first electrical connection element, has a substantially circular connection plate with a central opening for attaching the connection element to the bolt and an receiving region, elongated in a radial direction relative to the connection plate, for an electrical conductor. At least two locking elements are provided on the connection plate of the second electrical connection element, which, when the second connection element is placed axially on the latter in a predetermined angular position with respect to the first connection element, can be locked in a rotationally fixed manner with corresponding latching elements. The second electrical connection element thus corresponds to the first connection element except for the one provided at the first connection element and missing in the second connection element anti-rotation, which can cooperate with the bolt. Although the second connection element can thus produce no rotationally fixed connection with the bolt, but otherwise has all the advantages of the connection element already described. It is used for producing a rotationally fixed connection with the bolt always together with a connection element which has an anti-rotation, for example in the form of externally formed on the connection plate gripping tongues, which can cooperate with the bolt. This connection element establishes the non-rotatable connection with the bolt, and one or more connection elements, which have no such rotation, can be successively placed axially on this first connection element and each lock with a lower connection element rotationally fixed. One thus obtains a stack of superimposed and rotatably connected to the bolt either directly or via at least one underlying connection element connection elements.

According to a particularly preferred embodiment of the invention, the central opening of the second electrical connection element is substantially cross-shaped, and on the four arms of the cross a latching element is arranged in each case. Depending on the choice and arrangement of the locking elements, two identical connection elements in this embodiment, at least in two different positions, namely with a radial offset of 90 ° or 270 °, placed on each other and locked together.

Fig. 1

eine perspektivische Ansicht eines auf einen Bolzen aufgesteckten Anschlusselementes gemäß einer ersten Ausführungsform der Erfindung,

Fig. 2

eine perspektivische Ansicht der Anordnung aus der Fig. 1 mit zwei weiteren auf den Bolzen aufgesteckten Anschlusselementen,

Fig. 3

eine perspektivische Ansicht eines Anschlusselementes gemäß einer zweiten Ausführungsform,

Fig. 4

eine perspektivische Ansicht eines zweiten Anschlusselementes, welches mit dem in Fig. 3 dargestellten Anschlusselement kombiniert werden kann,

Fig. 5

eine perspektivische Ansicht der Anschlusselemente aus den Fig. 3 und 4 in miteinander verrastetem Zustand.

In the following, the invention will be described in more detail with reference to three different preferred embodiments and with reference to the accompanying figures. The figures show in detail:

Fig. 1

a perspective view of a plugged on a bolt connection element according to a first embodiment of the invention,

Fig. 2

a perspective view of the arrangement of the Fig. 1 with two further connection elements plugged onto the bolt,

Fig. 3

a perspective view of a connection element according to a second embodiment,

Fig. 4

a perspective view of a second connection element, which with the in Fig. 3 illustrated connecting element can be combined

Fig. 5

a perspective view of the connection elements of the 3 and 4 in a locked state.

All in the FIGS. 1 to 5 The connecting elements 10, 10 ', 10 "shown have, for one thing, a substantially circular connection plate 12, 12', 12" and, on the other hand, an elongate receiving region 16, 16 ', 16 "which adjoins the connection plate 12 Connecting plate 12, 12 ', 12 "and the channel-shaped receiving portion 16, 16', 16" is like the connection plate 12, 12 ', 12 "plate-like flat, but already in comparison to the diameter of greatly tapered intermediate region 15, 15', 15th The connecting elements 10 are each formed in one piece, as can be seen in the 3 and 4 recognizes the individual connection elements 10, 10 'in a perspective Show view. For example, they can first be punched out of a sheet and then bent into shape.

The receiving area 16, 16 ', 16 "is channel-shaped in all illustrated connecting elements 10, 10', 10" and has on both sides raised wall portions 40, 40 ', 40 ", which produce a crimped connection with a in the receiving area 16, 16'. , 16 "allow lying, not shown in the figures electrical conductor.

In the in the Fig. 1 to 5 For example, connecting elements 10, 10 ', 10 "are provided in each case in approximately mutually opposite elevated wall regions 40, 40', 40" at the end of receiving area 16, 16 ', 16 "opposite terminal plate 12, 12', 12". which are tapered from bottom to top. On the other hand, further in the direction of the connecting plate 12, 12 ', 12 "on both sides of the receiving area 16, 16', 16" raised wall portions 40, 40 ', 40 "are formed, which have a substantially rectangular contour the raised wall portions 40, 40 ', 40 "but also have different shapes, and in addition to a crimp connection, other connections of the receiving area 16, 16', 16" are conceivable with an electrical conductor.

The in the FIGS. 1 to 3 and 5 shown different embodiments of a connecting element 10, 10 ', 10 "according to the invention, as well as with a connecting element 10' according to the invention, as shown in the Fig. 3 is shown, to be combined connecting element 10, which in the Fig. 4 are substantially different only in the design of the terminal plate 12th

That in the Fig. 1 individually and in Fig. 2 together with two identical connection elements 10 ', 10 "shown connecting element 10 has in the middle of the connection plate 12, as well as the connecting plate 12 itself circular opening 14 through which, as in the Fig. 1 and 2 represented, a ground bolt 30 can be inserted. The symmetry axis m of the ground bolt then extends axially to the connection plate 12 through the center thereof.

Around the central opening 14, a total of eight latching recesses 17, 18, 19 are disposed on a concentric with this opening 14 circle, all of which have the shape of circular ring sections with rounded corners. The distance between two adjacent latching recesses 17, 18, 19 is the same in each case, so that therefore two adjacent latching recesses 17, 18, 19 are offset in each case by an angle of approximately 45 ° radially to each other.

There are a total of three different types of locking recesses 17, 18, 19 are provided, with always two identical recesses 17, 18, 19 opposite each other in pairs. In the simplest form, the recesses 17 have no further locking elements. Exactly two such a simple recess forming recesses 17 are provided opposite each other.

Clockwise next to these two simple recesses 17 are each two adjacent, ie a total of four, recesses 18 formed on the facing in the direction of the central opening 14 side of the recess 18 with a radially outward pointing latch 20 are provided. The thickness of the locking lugs 20 in the axial direction corresponds to the thickness of the connection plate 12 and the width of the locking lugs 20 is about 1/4 to 1/3 of the extension of a recess 18 in the circumferential direction.

In each case between one of the simple latching recesses 17 and one of the latching lugs 20 provided with locking recesses 18, a further latching recess 19 is finally arranged, which has a latching projection 22 provided with an opening 24. The latching projections 22 in the two pairs of locking recesses 19 which are likewise opposite one another extend from the inner sides of the latching recesses 19 pointing in the direction of the opening 14 in the connection plate 12 initially in the plane of the connection plate 12 and then extend in the axial direction perpendicular to this plane opposite to the raised wall portions 40 of the receiving area 16, ie in the Fig. 1 and 2 downward. The opening 24 formed in the latching projections 22 has a rectangular cross section and is dimensioned such that essentially only one frame-like edge remains of the latching projections 22. The width in the circumferential direction of the openings 24 of the connection plate 12 corresponds to the width of the locking lugs 20 or is slightly larger than this, so that the locking lugs 20, as will be explained later, can engage in the openings 24.

The in the Fig. 1 and 2 to be recognized, a total cylindrical ground bolt 30 is provided with a thread 32 for a nut and has at its in the Fig. 1 and 2 almost completely of the or the connecting elements 10, 10 ', 10 "hidden underside an octagonal, pedestal-like foot 34, which is an anti-rotation of a plugged onto the bolt 30th Connection element 10 allows. This rotation is effected by the interaction of the octagonal foot 34 with the locking projections 22 described above, which are provided in the two locking recesses 19 formed in the connection plate 12. The diameter of the octagonal foot 34 and the position and shape of the locking projections 22 are chosen so that, as in Fig. 1 can best be seen, when choosing a suitable angular position, the two locking projections 22 each outside the side surfaces of the octagonal foot 34 abut. In order to obtain a suitable angular position, the connecting element 10 must be aligned when plugging onto the bolt 30 so that the eight side surfaces of the foot 34 are each aligned with a latching recess 17, 18, 19 of the connecting element 10. In this position, the connecting element 10 is rotationally fixed on the foot 34 of the bolt 30 and is held by the two locking projections 22 in this position. As can be easily understood, eight different angular positions between the foot 34 and a connection element 10 are possible.

If several conductors are to be connected to a ground pin 30, then either a plurality of such connection elements 10, 10 ', 10 "successively plugged onto a ground pin 30 and locked against rotation with each other, or you put first several connection elements 10, 10', 10" on each other, so that they lock against each other in a rotationally fixed manner, and then fixes the entire assembly on the ground bolt 30. The latter procedure is particularly advantageous when the ground bolt 30 is in a motor vehicle due to the cramped conditions. Regardless of the chosen procedure, one obtains an arrangement as exemplified in Fig. 2 is shown. Three similar connection elements 10, 10 ', 10 ", the in Fig. 1 Corresponding connection element 10 correspond, are attached to a common ground pin 30. The connection plates 12, 12 ', 12 "of the three connection elements 10, 10', 10" are thus coaxial with each other and are each offset radially to each other.

The lowermost connecting element 10 is non-rotatably connected via the locking projections 22 with the ground pin 30, as it is in Fig. 1 is shown. The middle connection element 10 ', which is sandwiched between the two other connection elements 10, 10', is in turn connected in a rotationally fixed manner to the connection element 10 underneath and radially offset by 45 ° in the counterclockwise direction with respect to the connection element 10. A third connection element 10 "is connected to the middle connection element 10 'rotatably locked and offset in relation to this by 90 ° clockwise radially. The latching projections 22 "of the uppermost connection element 10" can engage, for example, in underlying latching recesses 17 ', 18', optionally one in the latching recess 18 'trained locking lug 20' in the opening 24 "in the locking projection 22" engages.

Since the in the Fig. 1 and 2 shown connecting elements 10, 10 ', 10 "have only a pair of opposing locking recesses 19, 19", in which corresponding latching projections 22, 22 "are provided, a connection element 10' so in six different angular positions corresponding to the six remaining latching recesses 17, 18, each in the Fig. 2 invisible locking projections of the connecting element 10 'can record, placed on a similar connection element 10 and locked in rotation with this. Even for a third, on two mutually rotatably locked and superposed terminal elements 10 ', 10 attached connector 10 "theoretically arise again six possible angular positions with respect to the underlying connection element 10', wherein in practice, however, usually a different angular position for the lowermost connecting element 10, so that sufficient space is available for the receiving areas 16 ', 16 "of the connecting elements 10', 10" rotatably locked, a nut, not shown in the figures, can be screwed onto the ground bolt 30, without thereby a rotational movement of the connecting elements 10, 10 ', 10 "could be caused.

In Fig. 3 is another embodiment of a connecting element 10 'shown, this compared to the representation in the Fig. 1 and 2 is rotated about its longitudinal axis, so that the raised wall portions 40 'of the receiving area 16' downwards instead of upward. As already mentioned, the basic shape with the circular connection plate 12 ', the transition region 15' and the receiving region 16 'is the same as in the Fig. 1 and 2 illustrated embodiment.

The central opening 14 'in the connection plate 12', however, is not circular, but extends in the longitudinal direction in the same direction as the connection region 16 'and has on the longitudinal sides in each case a bulge 11' for receiving the ground bolt 30. At the two Transverse sides of the elongated recess 14 'are respectively in the direction of the center of the opening 14' facing locking lugs 26 'integrally formed, which has a similar shape as the locking lugs 20 in the in the Fig. 1 have illustrated embodiment. The locking lugs 26 extend over 1/4 to 1/3 of the length of the transverse side of the opening 14 and are slightly tapered in the direction of the center of the opening 14 '.

On the outside, two mutually opposite rectangular recesses 29 'are provided on the connecting plate 12', which lie at the level of the bulges 11 'of the opening 14'. In these recesses 29 'an elastic gripping tongue 28' is formed in each case. The curved elastic gripping tongues 28 'have in Fig. 3 axially upwards and form an anti-rotation of the connection element 10 '. You can, for example, when the connection element 10 'to a ground pin 30, as in the Fig. 1 and 2 is shown, is attached to the side surfaces of an octagonal foot 34 of the same.

In Fig. 4 a further connecting element 10 is shown, which in conjunction with the in Fig. 3 shown connecting element according to the invention can be used. As regards the receiving area 16 with its raised walls 40, the transition area 15 and the contour of the connecting plate 12, it corresponds to the in Fig. 3 illustrated connection element 10 '. However, no elastic gripping tongues 28 'are provided on the outside of the connecting plate 12, so that it thus has no anti-rotation, and the central opening 14 is formed substantially cross-shaped.

At the ends of two opposite arms of the cross locking lugs 26 are formed, which the locking lugs 26 'at the transverse ends of the recess 14' of the in Fig. 3 shown connection element 10 'same. At the ends of the other two arms of the cross formed by the opening 14 a locking projection 22 is formed with a rectangular opening 24 formed therein in each case. These locking projections 22 are similar to those in the Fig. 1 They also extend initially approximately in the plane of the terminal plate 12 and then axially in relation to the terminal plate 12 in the direction opposite the raised walls 40 of the receiving area 16 opposite direction. Through the openings 24, the two locking projections 22 also receive here a frame-like shape.

In Fig. 5 are the two in the 3 and 4 shown connecting elements 10 ', 10 now shown mounted together, wherein the two connecting elements 10', 10 in comparison to the illustration of 3 and 4 rotated about its longitudinal axis by 180 °, so that the raised walls 40 ', 40 of the receiving areas 16', 16 point upward. That in the Fig. 3 illustrated connection element 10 'is below the in Fig. 4 The respective openings 14 ', 14 of the two connection elements 10', 10 are aligned with each other so that the locking projections 22 of the overhead connection element 10 lie on the transverse sides of the opening 14 of the lower locking element 10 'and there the locking lugs 26th 'overlap so that they lie in the openings 24 of the locking projections 22. The locking lugs 26 of the upper connecting element 10, however, are located centrally on a radially outside of the bulges 11 lying portion of the connection plate 12 'of the lower locking element 10' and contribute in this case, nothing to the latching.

Since the opening 14 at the in Fig. 3 illustrated locking element 10 'in the same direction as the receiving portion 16', while the cross-shaped opening 14 with respect to the receiving portion 16 of the in Fig. 5 now lying above the connecting element is radially offset by about 45 °, an angle of approximately 45 ° is made between the terminal portions 16 ', 16 of the two connecting elements 10', 10. The elastic gripping tongues 28 'on the in Fig. 3 shown locking element 10 'are in the Fig. 5 not shown, but can serve to lock the two connection elements 10 ', 10 rotationally fixed to the foot 34, not shown, of a ground bolt 30.

LIST OF REFERENCE NUMBERS

10, 10 ', 10 "

connecting element

11 '

Bulges in opening 14 '

12, 12 ', 12 "

connecting plate

14, 14 ', 14 "

Opening in the connection plate 12, 12 ', 12 "

15, 15 ', 15 "

Transition area

16, 16 ', 16 "

reception area

17, 17 ', 17 "

recesses

18, 18 ', 18 "

recesses

19, 19 ', 19 "

recesses

20, 20 ', 20 "

Locking lugs in locking recesses 18, 18 ', 18 "

22, 22 ', 22 "

Locking projections in recesses 19, 19 ", 19"

24, 24 ', 24 "

Openings in the latching projections, 22, 22 ', 22 "

26, 26 '

Latches on opening 14, 14 '

28 '

grip tongues

29 '

Outside recesses in connection plate 12 '

30

earth stud

32

thread

34

Foot part of the bolt 30

40, 40 ', 40 "

raised wall areas

m

central axis

Claims (15)

1. An electrical connector element (10, 10', 10") for the connection of an electrical lead to a bolt (30), in particular to a ground bolt, comprising a substantially circular connector plate (12, 12', 12") with a central opening (14, 14') for plugging the connector element (10, 10', 10") onto the bolt (30), and a receiving region (16, 16', 16") for an electrical lead, said receiving region being elongated in a radial direction with respect to the connector plate (12, 12', 12"), with at least two latch elements (17, 17", 20, 20', 20", 22, 22", 26') being provided at the connector plate (12, 12', 12") outside of the central opening (14, 14') which are rotationally fixedly latchable to corresponding latch elements (17, 17", 20, 20', 20", 22, 22", 26') of the first connector element (10, 10', 10") when a further connector element (10, 10', 10") is mounted axially onto said first connector element (10, 10', 10") in a predetermined angular position with respect to the first connector element (10, 10', 10"),
   characterized in that
   the connector element (10, 10', 10") has a security against rotation (22, 22", 28') which is suitable to cooperate with the bolt (30) extending through the central opening (14).
2. An electrical connector element (10, 10', 10") in accordance with claim 1, characterized in that the security against rotation is formed by one of the latch elements (22, 22").
3. An electrical connector element (10, 10', 10") in accordance with claim 1 or claim 2, characterized in that the latch elements include latch recesses (17, 17", 18, 18"), in particular with radially outwardly facing latch noses (20, 20', 20") formed therein.
4. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that the latch elements include axially projecting latch projections (22, 22") provided with an opening (24, 24") and arranged in latch recesses (19, 19").
5. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that two identically formed latch elements (17, 17", 20, 20', 20", 22, 22", 26') are in each case arranged symmetrically on the connector plate (12, 12', 12") with respect to an axial central axis (m) extending through its central opening (14, 14').
6. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that different types of latch elements (17, 17", 20, 20', 20", 22, 22") are provided at the connector plate (12, 12', 12") and are arranged radially offset to one another by a specific angle, with the latch elements (17, 17", 20, 20', 20", 22, 22") of the two connector elements (10, 10', 10") being latchable to one another when two identical connector elements (10, 10', 10") are mounted axially on one another radially offset to one another by this angle.
7. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that a plurality of latch elements (17, 17", 20, 20', 20", 22, 22"), in particular six or eight latch elements (17, 17", 20, 20', 20", 22, 22"), are arranged concentrically around the central opening (14) of the connector plate (12, 12', 12") with uniform intervals between two adjacent latch elements (17, 17", 20, 20', 20", 22, 22").
8. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that different types of latch elements (17, 17", 20, 20', 20", 22, 22"), in particular two or three different types of latch elements, are provided.
9. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that a plurality of rotationally symmetrically arranged, substantially like-shaped latch recesses (17, 17", 18, 18", 19, 19") are formed in the connector plate (12, 12', 12") and form a latch element either on their own or together with a latch nose (20, 20', 20") or with a latch projection (22, 22").
10. An electrical connector element (10') in accordance with any one of the preceding claims, characterized in that latching tongues (26') are formed outside of the central opening (14') which face radially inwardly and form latch elements.
11. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that the security against rotation is formed by gripping tongues (28') shaped at the outside on the connector plate (12').
12. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that the receiving region (16, 16', 16") for the electrical lead is made substantially groove-shaped and has raised wall regions (40, 40', 40") to establish a crimp connection.
13. An electrical connector element (10, 10', 10") in accordance with any one of the preceding claims, characterized in that it is made in one piece.
14. A combination of a first electrical connector element (10') in accordance with any one of the preceding claims and of a second electrical connector element (10) comprising a substantially circular connector plate (12) with a central opening (14) for plugging the connector element (10) onto the bolt (30), and a receiving region (16) for an electrical lead, said receiving region being elongated in a radial direction with respect to the connector plate (12), with at least two latch elements (22, 26) being provided outside of the central opening (14) on the connector plate (12) which are rotationally fixedly latchable to corresponding latch elements (26'), when the second connector element (10) is axially mounted onto the first connector element (10') in a predetermined angular position with respect to the first connector element (10').
15. A combination in accordance with claim 14, characterized in that the central opening (14) of the second electrical connector element (10) is essentially cruciform and a respective latch element (22, 26) is arranged at each of the four arms of the cross.

Images