EP1515397A1 - Connector clamp for a direct plug in connection of electrical conductors - Google Patents

Abstract

The connecting device (1) has a clamping spring (4) acting on a stripped conductor end (2) to clamp it against a support so the conductor can be directly inserted into the clamping point (5) without tools. The clamping spring has a first arm (6) with a window aperture (7) joined to a closed loop (8) ending in a clamping arm (9) that passes through the aperture, into which the conductor end can be inserted and clamped between the clamping arm and the window aperture wall or a current rail (3).

Description

The invention relates to a connection device according to the preamble of the claim 1.

There have long been terminals for single or multi-wire electrical Ladder known in direct plug-in technology, where in a power rail with a recess and a collar engages a U-shaped, open clamping spring, which indeed on the one hand easy to install, but the problem is that relatively large Forces when inserting and contacting conductors on other elements of the Connecting device, so on a power rail or on an insulating material must be transferred.

The invention has the object of this problem as simple as possible constructive To solve means.

The invention solves this problem by the subject matter of claim 1.

Thereafter, the clamping spring on a first spring leg, with a window-like Recess - closed on at least three sides or all around four sides is provided, wherein the first spring leg is followed by a closed loop, which ends in a clamping leg, the window-like recess interspersed, so that the conductor end, which from the side of the loop ago in the window-like Recess is inserted, between the clamping leg and a wall the window-like recess and / or a recess passing through Busbar as an abutment tool-free and direct hiding firmly and contacted is.

Advantageous embodiments can be found in the dependent claims.

Preferably, the first spring leg with the window-like recess on a Busbar or other element fixed, in particular immovable.

Alternatively, it is conceivable that the first spring leg spaced from a busbar leg lies.

The invention provides a connection device which in the minimum case only one Clamping spring exists, which itself takes over the contacting function integrating. The clamping spring has a geometry that is reminiscent of a tension spring. But the difference lies in the fact that a conductor from the opposite side - that is from the side of the resilient loop ago - automatically tool-free in the window-shaped recess is inserted to there, for example, between the Clamping leg, which passes through the window-shaped recess, and the edge of the Notch or a recess also passing through the busbar clamped to become.

Although this plugging direction of the conductor is in principle also evident in DE 35 24 097 C2, but there they did not realize that with many leaders it is even possible on an actuating handle (ie an actuating tool in the sense of the claim) to dispense with the clamping spring and use it in direct plug-in technology, in particular, when the spring leg with the recess (for example, on the busbar or on a Isolierstoffgehäuse) fixed and unlike the prior art of the window passing through free legs is movable.

The thus formed clamp is readily from one side without tools connectable, whereas a leader against the spring action is not without a tool is removable from this again.

The terminal thus offers high reliability at minimum cost and is can be connected without tools and can be deactivated with a tool.

It is conceivable that the busbar bordered on one side or one on one side having an open recess, which favors the insertion of a conductor end.

According to the features of the subclaims, the connection device can also be used on different Be arranged on a power rail, which is the need for Use of another part - the busbar - brings with it, but on the other hand the not to be underestimated advantage that spring and contact the busbar each of the most suitable materials can be selected while at the absence of a busbar a material compromise must be sought namely, a material that has both good resilience and good contacting properties having.

Preferably, the busbar is aligned in a simple manner perpendicular to the recess, e.g. by several times in their end to the clamping spring so um um in particular 90 ° is bent, that a kind U-shaped space at the end of the busbar is formed, on which one side of the Klemmfedem is placed, so that the U-shaped space ideally as multilateral protected or closed Reception room for ladder to be inserted is used. In this variant both the material waste on the busbar with particularly compact dimensions minimizes as well as the contacting properties in a particularly ideal manner optimized.

Fig. 1

eine perspektivische Ansicht einer ersten Anschlußvorrichtung;

Fig. 2

eine perspektivische Ansicht der Anschlußvorrichtung aus Fig. 1 ein einer Aussparung eines Klemmengehäuses;

Fig. 3

das Ausführungsbeispiel aus Fig. 2 während des Entschaltens;

Fig. 4

eine perspektivische Ansicht einer zweiten Anschlußvorrichtung;

Fig. 5

eine Stromschiene für die Anschlussvorrichtung aus Fig. 4;

Fig. 6

eine dritte Anschlußvorrichtung für mehrere - hier zwei - Leiter in Reihe;

Fig. 7

eine vierte Anschlußvorrichtung für mehrere - hier zwei - Leiter in Reihe;

Fig. 8

eine fünfte Anschlußvorrichtung für mehrere - hier zwei - Leiter nebeneinander;

Fig. 9

eine perspektivische Ansicht einer sechsten Anschlußvorrichtung;

Fig. 10

ein Klemmengehäuse mit weiteren Anschlussvorrichtungen;

Fig. 11

eine perspektivische Ansicht einer siebten Anschlußvorrichtung; und.

Fig. 12

eine perspektivische Ansicht einer achten Anschlußvorrichtung.

The invention will be described in more detail below with reference to the drawing with reference to exemplary embodiments. It shows:

Fig. 1

a perspective view of a first connection device;

Fig. 2

a perspective view of the terminal device of Figure 1 a recess of a terminal housing.

Fig. 3

the embodiment of Figure 2 during the Ausschschalts;

Fig. 4

a perspective view of a second connection device;

Fig. 5

a busbar for the connection device of FIG. 4;

Fig. 6

a third connection device for several - here two - conductors in series;

Fig. 7

a fourth connection device for several - here two - conductors in series;

Fig. 8

a fifth connection device for several - here two - conductors next to each other;

Fig. 9

a perspective view of a sixth connection device;

Fig. 10

a terminal housing with further connection devices;

Fig. 11

a perspective view of a seventh connection device; and.

Fig. 12

a perspective view of an eighth connecting device.

Fig. 1 shows a first embodiment of a connecting device 1 for direct plug-in connection a stripped conductor end 2. This has a busbar 3, acting as a compression spring on the conductor end 2 clamping spring 4 for clamping of the conductor end 2 is arranged on the busbar 3, which is designed such is that the conductor end 2 without actuating tool directly into the nip 5 between Clamping spring 4 and busbar is inserted without tools.

The clamping spring 4 has a first spring leg 6, which with a window-like Recess 7 is provided. At the first spring leg 6 with the window-like Recess 7, the clamping spring 4 is arranged on the busbar (fixed). Here it is aligned with the spring leg 6 parallel to the busbar and flat on these are laid up and / or attached. The spring leg 6 can also be separated from Busbar legs may be arranged (see Fig. 3).

Then it describes a closed loop 8, wherein they are in the loop. 8 to the window-like recess 7 extends back and this with a free clamping leg 9 - which here only has the width of the recess - interspersed. Of the free clamping leg 9 presses the conductor end 2 against the busbar. 3

The loop 8 has an elongate shape with two almost substantially parallel aligned spring legs 10, 11 and a spring leg 10, 11 connecting Elbow 12 and is inclined to the conductor insertion direction, in particular such that the angle α between the clamping leg and the conductor insertion direction L - here vertically from above - smaller than 45 °, in particular smaller than 30 ° is.

The clamping spring 4 has a geometry which corresponds to the geometry of so-called Tension spring connections reminds. But it is arranged and designed such that a Ladder can be inserted from the opposite side of the loop without tools is. A very particular advantage of this clamping spring 4 is that it on the one hand a direct plug connection allows, because a conductor can easily into it introduced but not readily against the edge in the area of the nip again 5 are pulled out. For this purpose, the user rather needs a tool. In addition, on the other hand, it also offers the advantage of a self-contained Systems, that is, the clamping spring 4 itself takes all forces between the conductor end 2 and 4 clamping spring. For this it is advantageous if the spring leg 6 with the recess 7 is fixed to the busbar 3.

The busbar 3 has a Eckwinkelform, wherein one of the two busbar legs 14, 15 of the busbar 3 for direct support of the first spring leg. 6 serves with the window-like recess 7 and even a separate window-like recess 16, which with the window-like recess 7 of the first spring leg 6 is aligned.

Preferably, the window-like recess 16 of the busbar 3 by a punched formed, in particular such that still a busbar piece 17 at a Side is connected to the busbar 3, which is bent over in such a way that he Busbar leg 15 extends through the recess 16 through or continues. A bulge 18 in the busbar 3 in the region of the clamping point 5 is improved the contact between busbar and conductor end 2.

Figure 2 shows the arrangement of the connecting device 1 of Figure 1 in an insulating material 19. This insulating housing 19 is provided with at least one window or at least one recess 20 into which the at least one (or more) Connecting device (s) can be used laterally / are.

Here are webs 21, 22, which enforce the interior of the loop 8, the spring support or as an abutment to the clamping spring 4 defined in the insulating material to fix and proper operation and a limitation of the spring movement to ensure.

A conductor insertion opening 23a is used to introduce the conductor end 2 in the nip. An insertion opening 23b on the other hand serves to insert an actuating tool 24 (Fig. 3) and thus enables the disconnection of the terminal device, the in this arrangement, for example, is usable for a terminal block.

When wiring simply the conductor end 2 through the Leitereinführöfnung 22 in inserted the connecting device, whereby the clamping leg so bends, that the clamping point 5 opens and the conductor end 2 in the nip 5 insertable and is definable there.

By means of the trained as a screwdriver operating tool 24 (Figure 3), which is inserted into the insertion opening 23 b, it is possible, the clamping leg 9 of wegzubiegen the nip 5, so that it is possible to remove the conductor end 2.

Figure 4 shows a variant of Figure 1, which is characterized in that in particular becomes clear that here the compression spring or clamping spring 4 as a self-contained, formed the forces for contacting the conductor end 2 receiving system is.

The busbar 3 'of FIG. 4 in this case has the geometry of Figure 5, i. she is bent from a strip and has three busbar legs 25a, b, c on, of which the middle 25b bent over to transfer sufficiently large currents by 90 ° is and such a side wall of the one-sided open recess 16 '(which is the It is easier to insert the conductor), due to its width and design allowing enough large currents to be transmitted in this area. To the Busbar leg 25c, which is arranged at the nip 5, in turn a bulge 26 is provided for contacting.

The clamping spring 4 is spaced here parallel to one of the busbar legs 25a. This spacing is provided by the busbar section 25b and a web 27 realized by the busbar leg 25a upwards in the direction of the clamping spring 4 is bent and this spaced with their free ends.

The particular advantage lies here in the good current-carrying property of Busbar 3 'also in the region of the recess 16' in particular by the busbar section 25b side of the recess (or recess here) 16 ', wherein It should also be emphasized that this busbar 3 is particularly favorable as a stamped and bent part can be made.

Otherwise, all variants of FIG. 1 can be achieved with this direct connection spring to 5, but for example also multiple connections in the manner of Figure 6 with two connection devices 1, 1 'realize.

In Fig. 6, the two connection devices on a busbar 3 in the manner of Fig. 1 arranged, but which is behind a fold 28 behind the first clamping spring 4 continues to a second clamping spring 4 '. Here is also the position of See clamping spring 4 in the unused state.

Fig. 7 shows an analog arrangement with a busbar 3, which via a Connecting web 29 integrally connects two connecting devices, which ever for are constructed in the manner of Figs. 4 and 5.

Fig. 8 again shows the corresponding arrangement of two clamping springs 4, 4 ' a busbar 3, which is similar in principle to that of FIG. 1, parallel to each other.

FIG. 9 again differs from this embodiment. Here prevail the two ends 30, 32 of the end portions respectively stepped, U-shaped bent Conductor rail 31 vertically per a recess 7 in the first spring legs. 6 of two Klemmfedem 4, wherein the Klemmfedem 4 rest on the gradations. This variant offers the particular advantage that the conductors the busbar 3 at all do not have to enforce what makes the wiring even easier.

In particular, too - as can be seen a through connection for an otherwise Not shown through terminal 3 easy to implement. Otherwise, the equivalent Arrangement turn the arrangement of Figure 1 et seq.

Fig. 10 shows the arrangement of two further connecting devices with spaced Power rail in a terminal housing 19, wherein the terminal housing 19th assumes an additional supporting function for the connection devices can and wherein the busbar of the right in this Fig. Connection device additionally a U-shaped receiving space (designed as a deflection of the busbar) 33 in the insertion direction for receiving the conductor end. Serve again here in the right section of the figure at least one or more webs 21, the Inside the loop 8 enforce the spring support or as an abutment, to fix the clamping spring 4 defined in the terminal housing 19 of insulating material and to ensure proper operation.

However, it is conceivable (not shown here), on a separate busbar 3 completely closed dispense, if a sufficiently conductive spring material for the realization of the clamping spring 4 is selected so that it acts as a busbar 3 "itself the area of the window-shaped recess 7 directly as the end a busbar 3 may be formed - see Fig. 11. This embodiment builds on minimal costs and yet realizes a self-contained Power system for absorbing the forces during insertion and contacting the conductor end 2 in the terminal point 5. An additional support can in turn by walls and / or webs of a corresponding auszuformenden (not shown here) Isolierstoffgehäuses done. A more detailed view of FIG. 11 shows that here one or both ends of a band-like spring material with conductor property directly each a clamping spring 4 is formed in the manner of Fig. 1. On the separate Busbar, however, is omitted as explained above. The spring material Acts rather as the busbar 3 "is advantageous when punching the window-shaped recess 7 each left a piece of equipment 34 left that after the Punching the window on three sides and about 90 ° from the plane of the spring band is folded, so that a conductor between the clamping leg 9 of the clamping spring 4 and this piece of equipment 34 would be clamped.

The variant of FIG. 12 in turn has a busbar 3, which consists of a good electrically conductive metal strip consists, in its end to the clamping spring 4 out repeatedly bent in such a particular 90 ° that a kind of U-shaped space 36 is formed at the end of the busbar 3. On this U-shaped space is laterally (perpendicular to the main extension plane of the busbar following the U) one of the Klemmfedem 4 placed on the type of Fig. 1, so that the interior of the U-shaped Room 36 serves as a receiving space for the conductor to be inserted. The Recess 7 can from the side of the busbar 4 ago can from a busbar piece 35 be penetrated, which facilitates the contact of a conductor or for contacting in interaction with the clamping leg 9 of the clamping spring. 4 serves. The clamping leg 9 has two turns against the direction of the bend the loop 8, which optimize the function.

This variant is structurally particularly easy to implement and still features special good connection properties.

All variants of the preceding figures and claims are suitable in principle for use in or on insulating housings 19 of terminal blocks or other Terminal units and modules, e.g. also for use directly on or in electrical Devices of all kinds such as shooters and the like .. All variants are also as Multiple connections can be realized and there are also other busbar geometries realized with the illustrated clamping spring.

reference numeral

connecting device

1

Manifold

1, 1 '

conductor end

2

conductor rail

3, 3 ', 3 "

feather

4

nip

5

first spring leg

6

recess

7

loop

8th

clamping legs

9

parallel legs

10, 11

elbow

12

Bus bar legs

14, 15

recess

16

Busbar piece

17

bulge

18

Insulated

19

recess

20

web

21

web

22

insertion

23a, b

screwdriver

24

Bus bar legs

25a, b, c

bulge

26

web

27

folding

28

joint

29

end up

30.32

conductor rail

31

accommodation space

33

pad

34

Busbar piece

35

angle

α

Claims (19)

Connection device (1) for connecting a stripped conductor end (2), with a compression spring acting on the conductor end clamping spring (4) for clamping the conductor end (2) to an abutment, wherein the clamping spring (4) is designed such that the conductor without Actuating tool directly into the clamping point (5) can be inserted without tools, characterized in that the clamping spring (4) has a first spring leg (6) which is provided with a window-like recess (7), wherein a closed loop (8) adjoins the first spring leg (6), which terminates in a clamping leg (9) which passes through the window-like recess (7), so that the conductor end (2), which from the side of the loop (8) forth in the window-like recess (7) can be inserted between the clamping leg (9) and a wall of the window-like recess (7) and / or a recess passing through Busbar (3) as an abutment tool-free and direct plug-in firmly clamped and contacted. Connecting device according to claim 1, characterized in that the first spring leg (6) with the window-like recess (7) on a busbar (3) or other element is arranged in particular immovable. Connecting device according to one of the preceding claims, characterized in that the first spring leg (6) is spaced from a busbar leg (25a). Connecting device according to claim 1, 2 or 3, characterized in that the closed loop (2) further comprises two substantially parallel spring legs (10, 11) which are interconnected via a curved piece (12), wherein the parallel spring legs (10, 11) are oriented relative to the conductor insertion direction at an angle of less than 45 °, in particular less than 30 ° to the conductor insertion direction (L). Connecting device according to one of the preceding claims, characterized in that the busbar (3) has a completely limited recess (16 '). Connecting device according to one of the preceding claims, characterized in that the busbar (3 ') has a recess (16') which is open on one side. Connecting device according to one of the preceding claims, characterized in that the clamping spring (4) with its window-shaped recess (7) is placed on the busbar (3) such that its recess (7) engages with the recess (16) of the busbar (3). flees. Connecting device according to one of the preceding claims, characterized in that the first spring leg (6) is aligned perpendicular to the recess (16) of the busbar (3) and that the busbar (3) passes through the recess. Connecting device according to one of the preceding claims, characterized in that the busbar (3) at its end has a tapering gradation, at which the clamping spring (4) with its recess (7) is supported. Connecting device according to one of the preceding claims, characterized in that two or more of the clamping springs (4) are arranged parallel to one another on a single busbar (3). Connecting device according to one of the preceding claims, characterized in that two or more of the clamping springs (4) are arranged in series one behind the other on a single busbar (3). Connecting device according to one of the preceding claims, characterized in that the busbar piece (3) is designed as a corner angle. Connecting device according to one of the preceding claims, characterized in that the busbar (3) is designed as a stamped / bent part. Connecting device according to one of the preceding claims, characterized in that the first spring leg (6) is spaced parallel to one of the busbar legs (25a). Connecting device according to one of the preceding claims, characterized by an arrangement in or on an electrical device. Connecting device according to one of the preceding claims, characterized by an arrangement in an insulating housing (19) of a connection module, in particular a terminal block. Connecting device according to one of the preceding claims, characterized in that the busbar (3) is aligned perpendicular to the recess (7). Connecting device according to one of the preceding claims, characterized in that the busbar (3) in its end to the clamping spring (4) is repeatedly bent over in such a particular 90 °, that a kind of U-shaped space (36) at the end of the busbar (3 ) is formed, on which one side of the clamping springs (4) is placed, so that the U-shaped space (36) serves as a receiving space for inserted conductor. Connecting device according to claim 18, characterized in that the recess (7) is penetrated by a busbar piece (35).

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