EP2234211B1 - Spring clip connection for an electrical conduit - Google Patents

Description

The invention relates to a conductor connection for an electrical conductor with the features of the preamble of claim 1. Such connections serve to connect an electrical conductor to a connection contact. Usually, the electrical conductor is configured as a stripped individual conductor. The contact element may be a plug pin, a socket contact or any differently designed contact. The present invention relates to a conductor connection with a clamping spring.

In the field of conductor connections with spring force u.a. so-called cage springs and so-called plug springs known. In the known cage springs, an electrically conductive contact body is initially provided, to which the stripped electrical conductor is clamped with the aid of the cage spring. For this purpose, the cage spring has an approximately perpendicular to the conductor extending clamping arm. The clamp arm is pierced by an eye through which the conductor is passed. The force is applied by a running approximately perpendicular to the clamping arm spring arm, which largely closes the eye again after insertion of the conductor, so that the head rests clamped by the edges of the eye on the contact body. Since the clamping arm has a certain projecting length and is arranged next to the contact body with the spring arm formed on it, the cage spring requires a relatively large installation space.

Another embodiment of a conductor connection has a contact body which is interrupted by a bearing eye. On the contact body with a spring arm a spring loaded. Such a spring plug according to the preamble of claim 1 is for example from the DE 20 2007 001 701 U1 known. To the spring arm, a clamping arm connects, which abuts with its front side obliquely on an edge of the contact body by cross-eye. To connect the conductor, the front side of the oblique to the conductor extending clamping arm is deflected, so that the conductor between the end face of the clamping arm and the associated edge of the bearing eye is clamped. This type of conductor connection initially has the advantage that a stiffer conductor in its consistency can be inserted by simply inserting it into the slot formed between the end face of the clamping arm and the edge of the bearing eye. For multicore conductors of ductile consistency, a tool, such as a screwdriver blade, is needed to deflect the clamp arm to create the slot into which the conductor can be inserted. An advantage of this design is the oblique course of the clamping arm to the conductor, whereby when pulling out of the conductor a certain tilting of the front side of the clamping arm against the conductor occurs, which effectively inhibits the seat of the conductor in the bearing eye automatically. In this embodiment, the fact in turn is disadvantageous that the plug-in spring is arranged next to the contact element and in turn claimed additional installation space.

Based on this known prior art, the present invention seeks to make a conductor connection as space-saving. This object is achieved by the conductor connection with the features of claim 1 in an inventive manner. The dependent claims contain some expedient and partly for themselves inventive developments of claimed in claim 1 conductor terminal.

The invention is based on the basic idea that the most space-saving variant of a spring-applied connection could be realized by a clamping arm of the contact spring running parallel to the contact body. However, there is the problem that the spring forces acting on the clamping point are too small. To solve this problem, the contact body and the clamping arm of the contact spring are interleaved, namely by the contact leg is inclined to the clamping arm. As a result of the oblique, in particular acute-angled course of the clamping arm to the contact body almost parallelism between the two components and the associated small footprint is realized. The oblique course of the clamping arm to the contact body is made possible in that the contact body in turn left the clamping arm in a free Penetrated clamping window. After the example of the previously known cage spring, the conductor penetrates the clamping arm in a freely released clamping window. In addition, following the example of the plug-in spring, the upper, transversely extending edge of the clamping window slants obliquely into the conductor and thus unfolds the self-locking clamping known from the plug-in spring onto the conductor.

The space requirement of the contact body on the one hand and the contact spring on the other hand is particularly low in the transverse direction. This is based on the basic principle of the conductor connection to switch the clamping arm and the spring arm of the contact spring in the longitudinal direction as it were one behind the other. The spring arm is thereby arranged in the longitudinal direction below the terminal space for the conductor. The terminal space for the conductor is thus used at the same time for the deflection of the clamping arm and as a terminal space. For this purpose, the spring arm is housed below the corresponding space in the longitudinal direction below the intermediate leg.

In addition to the advantage of smaller footprint of erfindungsmäß conductor connection combines advantages of a known conductor terminal with cage spring on the one hand and a prior art conductor terminal with plug spring on the other.

The proposed in claim 2 insertion at the free end of the clamping arm allows the automatic tool-free connection of a rigid conductor in the nip. In a further embodiment it is provided to also bevel or bend out the free end of the contact leg to form an insertion bevel or to optimize the insertion bevel already created by the bulged free end of the clamping arm. If the free end of the clamping arm and the free end of the contact leg are chamfered or bent, they complement each other to form an insertion funnel for the conductor.

Claim 4 relates to the embodiment of the clamping arm. The clamping arm takes in the manner of a frame in this case a contact leg on which the conductor rests in its connection position, in itself. For this purpose, the clamping arm has two contact arms of the contact body between them receiving longitudinal arms.

The transverse yoke connecting the longitudinal arms in the region of their free end forms the clamping edge of the clamping arm for clamping the conductor. In other words, the conductor is in its connection position between the effective as a clamping edge lower edge of the transverse yoke on the one hand and the corresponding point of the Konktaktschenkels on the other hand a clamped. In order to improve the clamping effect of effective as a jaw portion of the contact leg on a protruding contact strip. The contact strip can either be bent out of the contact leg or be formed by an accumulation of material on the contact leg.

In a further embodiment, the longitudinal arms of the clamping arm taper from its fixed end towards its free end. As a result of this trapezoidal taper each longitudinal arm forms a bending beam of equal strength or a bending beam of the same voltage. As a result of the over the longitudinal arm in the longitudinal direction changing material cross section also changes the respective moment of resistance against bending of the longitudinal arm over its length. In the area of the free ends, the longitudinal arms deform more than in the area of the fortifications. This favors the deflection of the clamping arm when connecting the conductor. In this way, the stresses introduced as a result of the reversible deformation of the clamping arm when connecting the conductor are evenly distributed over the length of the clamping arm or the longitudinal arms forming the clamping arm. The voltage curve within the contact spring is thereby optimized.

The measure proposed in claim 7, in turn, serves to improve the space economy of the inventive conductor connection. Since, for example, in the case of plug connectors or plug connectors, a plurality or multiplicity of conductor connections is arranged next to one another, the installation space in the transverse direction is particularly critical. In order to minimize the installation width in the transverse direction, according to the teaching of claim 7 of the clamping arm spring-mounted spring arm is connected in the longitudinal direction of the clamping arm. At the end of the clamping arm is initially followed by an arcuate spring portion of the spring arm, which opens into a straight bearing region of the spring arm. With the straight bearing area of the spring arm is in turn mounted on the contact body. In a further embodiment, the spring portion according to claim 8 consists of two the longitudinal arms of the clamping arm extending arcuate spring arms. The longitudinal arms and the spring arms are thus continuously sliding into each other.

Particularly advantageous is the configuration of the storage area of the spring arm according to claim 9. Here, the storage area of the spring arm is designed to save space as a bearing plate with fork-like projections. On the fork-like projections facing away from the bearing plate, the spring arm are integrally formed with their ends.

To improve the spring characteristics of the spring arms open the spring arms in a V-shaped gusset. The V-shaped gusset forms as it were the lower end of the released in the clamping spring clamping window. The upper end is accordingly in the connection position on the conductor fitting, the longitudinal arms interconnecting transverse yoke.

To reduce the notch effect of the V-shape of the gusset, the V-legs are each rounded in the form of a circle segment. It is a circle segment with 45 ° connection. Through this circle segment, the notch shape of the gusset is changed, so that the stress distribution is further optimized.

To further optimize the space-saving design of the conductor connection, the contact body is executed cranked according to the teaching of claim 12. At the contact leg is perpendicular to an intermediate leg. This intermediate leg also serves as a stop of the conductor in the insertion direction. In the insertion direction below the intermediate leg, so facing away from the contact leg, so runs the arcuate spring portion of the spring arm of the contact spring. In the insertion of the conductor so the contact legs of the contact body or the clamping arm of the clamping spring and the intermediate leg of the contact body and the arcuate spring portion of the contact spring are placed one behind the other. From the intermediate leg turn the connecting leg of the contact body is bent. The connecting leg thus extends a little way next to the arcuate spring portion and carries at its free end the contact elements, such as socket contacts, pins or the like.

The claims 13 and 14 relate to the storage of the contact spring on the contact body. Manufacturing technology, both parts are simply plugged together and inhibited each other due to the spring force of the contact spring in the final assembly state itself.

Claim 15 finally relates to a stiffening the contact leg bead.

Finally, claims 16 to 20 relate to an actuating device for the conductor connection in a housing.

The actuating device initially has a carriage fixed in a housing and mounted so as to be longitudinally displaceable. The carriage also forms a housing cover closing a housing opening. The carriage is pierced by at least one passage opening for a conductor to be connected. Conveniently, the number of openings passing through the carriage corresponds to the number of conductors to be connected in the housing. At its end facing the interior of the housing, the carriage carries a deflection bevel, which is kinematically coupled to the free end of the clamping arm of the contact spring. With the help of the deflection bevel so the clamping arm of the contact spring can be pivoted between its rest position and its open position during insertion of the conductor. The deflection bevel is for this purpose at the free end of the clamping arm and forms a surface guide with the free end of the clamping arm. As a result of the longitudinal sliding movement of the carriage, the free end of the clamping arm slides on the corresponding guide surfaces of the deflection bevel and thus opens or closes the connection for the electrical conductor.

In an advantageous embodiment, the deflection bevel and the contact arm of the contact spring form a cam mechanism.

In a further advantageous embodiment, a locking mechanism is provided on the actuating device to hold the carriage in the open position of the actuating device. In this way, it is easily possible to insert the conductor into the conductor connection and to lock the actuator after the insertion of the conductor by the release of the locking mechanism.

In a further advantageous embodiment, a positive guide with a guide slot in the housing and spring jaws on the carriage is provided as a return drive for the carriage in its starting position.

In a further advantageous embodiment, another in the slide and housing effective securing mechanism is provided as captive for the carriage in the housing.

Fig. 1

die Hinteransicht einer erfindungsmäßigen Kontaktfeder,

Fig. 2

die Vorderansicht der Kontaktfeder gemäß Fig. 1,

Fig. 2a

den Federbereich eines ungebogenen Kontaktfederrohlings,

Fig. 3

die Hinteransicht eines erfindungsmäßigen, gekröpften Kontaktkör- pers,

Fig. 4

die Vorderansicht des Kontaktkörpers gemäß Fig. 3,

Fig. 5

den aus der Kontaktfeder und dem Kontaktkörper zusammengesetz- ten Leiteranschluss in der Ruheposition,

Fig. 6

den Leiteranschluss aus Fig. 5 mit angeschlossenem Leiter in Mon- tageendstellung,

Fig. 7

den Leiteranschluss mit aufgesetztem Schlitten in der Öffnungsstel- lung der Betätigungsvorrichtung vor dem Einführen des Leiters,

Fig. 8

den Leiteranschluss gemäß Fig. 7 beim Einführen des Leiters,

Fig. 9

den Leiteranschluss gemäß Fig. 7 in der Montageendposition des angeschlossenen Leiters,

Fig. 10

eine Explosionsdarstellung des Gehäuses mit eingelegtem Leiteran- schluss und dem im Gehäuse zu montierenden Schlitten,

Fig. 11

eine teilweise geschnittene Darstellung des Gehäuses mit eingesetz- tem Leiteranschluss und eingesetztem Schlitten analog der Explosi- onszeichnung in Fig. 10 in der Ruheposition der Betätigungsvorrich- tung,

Fig. 12

die Darstellung der Fig. 11 mit angeschlossenem Leiter,

Fig. 13

die Rückansicht des Gehäuses gemäß Pfeil XIII in Fig. 11,

Fig. 14

die Vorderansicht des in Fig. 11 dargestellten Gehäuses gemäß Pfeil XIV in Fig. 11, welche die Ruheposition der Betätigungsvorrich- tung zeigt,

Fig. 15

eine Darstellung gemäß Fig. 14, welche die Öffnungsstellung der Betätigungsvorrichtung zeigt.

With reference to the drawing figures, the invention is described in more detail. Show it:

Fig. 1

the rear view of an inventive contact spring,

Fig. 2

the front view of the contact spring according to Fig. 1 .

Fig. 2a

the spring region of an unbent contact spring blank,

Fig. 3

the rear view of an inventive, cranked contact body pers,

Fig. 4

the front view of the contact body according to Fig. 3 .

Fig. 5

the conductor connection assembled from the contact spring and the contact body in the rest position,

Fig. 6

the conductor connection Fig. 5 with connected conductor in assembly end position,

Fig. 7

the conductor connection with attached slide in the opening position of the actuator before inserting the conductor,

Fig. 8

the conductor connection according to Fig. 7 when inserting the conductor,

Fig. 9

the conductor connection according to Fig. 7 in the final assembly position of the connected conductor,

Fig. 10

an exploded view of the housing with inserted conductor connection and the carriage to be mounted in the housing,

Fig. 11

a partially cutaway view of the housing with inserted conductor connection and inserted slide analogous to the explosion drawing in FIG Fig. 10 in the rest position of the actuating device,

Fig. 12

the representation of Fig. 11 with connected conductor,

Fig. 13

the rear view of the housing according to arrow XIII in Fig. 11 .

Fig. 14

the front view of the in Fig. 11 shown housing according to arrow XIV in Fig. 11 showing the rest position of the actuating device,

Fig. 15

a representation according to Fig. 14 showing the open position of the actuator.

The contact spring 1 initially has two mutually parallel longitudinal arms 2. The longitudinal arms 2 are connected to each other in the region of their Freiendes from the transverse yoke 3 in the transverse direction 4. The longitudinal arms 2 each taper in the direction perpendicular to the transverse direction 4 longitudinal direction 5 in the direction of the transverse yoke 3. The transverse yoke 3 has at its adjacent to the ends of the longitudinal arms 2 region a clamping edge 6 formed lower edge. Above the clamping edge 6, the transverse yoke 3 is bent forwards.

In the longitudinal direction 5 is followed by the transverse yoke 3 opposite ends of the longitudinal arms 2 in each case an arcuate portion 7 of a spring arm 8 at. In turn, a region of the spring arm 8 designed as a bearing plate 9 adjoins the arcuate region 7. In other words, each spring arm 8 is composed of the bearing plate 9 and the respective arcuate portion 7. The arcuate region 7 merges fluidly in the longitudinal direction 5 in the longitudinal arm 2 assigned to it. The arcuate regions 7 open in front of the bearing plate 9 in a V-shaped gusset 60. To reduce the notch effect of the gusset 60, the spring arms 8 at their inner edges in each case a circular segment-shaped fillet 61 on. These are each circular segment-shaped fillets 61 with 45 ° connection, which in Fig. 2a is shown by a still unbent blank of a contact spring 1.

From the longitudinal arms 2 facing away from the end of the bearing plate 9 are on both sides of two fork-like projections 10 also. The longitudinal arms 2, the transverse yoke 3 and the gusset 60 in the region of the bearing plate 9 frame the clamping window 11 of the contact spring 1. The longitudinal arms 2 and the transverse yoke 3 also form the movable clamping arm of the contact spring. 1

The contact body 12 has a contact leg 13 extending in the longitudinal direction 5. The contact leg 13 is stiffened by means of a bead 14 running in the longitudinal direction 5. The contact leg release 15 is for formation an insertion bevel bent. From the contact leg 13, an intermediate leg 16 is bent at right angles to the end facing away from the contact limb 15 in the longitudinal direction 5. From the intermediate leg 16, in turn, a connecting leg 17 is bent in the longitudinal direction 5. The consisting of the contact leg 13, the intermediate leg 16 and the connecting leg 17 contact body 12 thus has a cranked geometry. From the intermediate leg 16 a jaw 18 is bent in extension of the bead 14 in the longitudinal direction 5. From the connection leg 17, in turn, two tabs 19 are bent out, which protrude from the connecting leg 17 in the manner of forks. Below the bent-out Kontaktschenkelfreiendes 15 an accumulation of material is provided on the contact legs 13 to form a projecting in the direction of the contact spring 1 in the assembled state of the conductor terminal contact strip 62nd

In the assembled state of the conductor connection ( Fig. 5 The contact leg 13 extends in the longitudinal direction 5, while the longitudinal arms 2 of the contact spring 1 extend at an acute angle to the longitudinal direction 5. The contact spring 1 is fixedly mounted on the contact body 12. For this purpose, the fork-like projections 10 of the bearing plate 9 are flat on the two flared out of the connecting leg 17 tabs 19. As an abutment to the support formed by the fork-like projections 10 and the lugs 19 which is bent out of the intermediate leg 16 jaw 18. The jaw 18 is clamped on the bearing plate 9.

To connect the conductor 20, the stripped end 21 of the conductor 20 is pushed with its end face against the bent transverse yoke 3 of the contact spring 1 in the longitudinal direction 5. The stripped end 21 of the conductor 20 can in this case slide along the effective as insertion bevel leg 15, which is also bent, along. The stripped end 21 of the conductor 20 slides further in the longitudinal direction 5 between the clamping edge 6 of the clamping arm formed by the longitudinal arms 2 and the transverse yoke 3 of the contact spring 1 and the contact strip 62 on the contact leg 13 of the contact body 12 and pivots this way the clamping arm of the contact spring 1 in the pivoting direction 22 away from the contact leg 13 of the contact body 12. In the connection position of the conductor 20, the end face of the stripped end 21 of the conductor 20 bears against the intermediate leg 16 of the contact body 12, so that the intermediate leg 16 forms a stop for the conductor 20.

To connect the conductor 20 whose stripped end 21 between the clamping arm of the contact spring 1 and the contact legs 13 of the contact body 12 must be spent. In a single-core rigid conductor this is done automatically by the pivoting away of the clamping arm of the contact spring 1 in the pivoting direction 22 via the effective as insertion funnel together with the bent transverse yoke 3 bent-out leg free 15th

If, however, it is a conductor 20 with a plurality of individual strands, the conductor connection must first be opened in order to be able to introduce the stripped end 21 of the conductor 20 into the conductor connection. For this purpose, the carriage 23 of the actuator is used. The carriage 23 is for this purpose relative to the contact legs 13 of the contact body 12 in the longitudinal direction 5 movable. The carriage 23 has at its the interior of the housing 24 facing the end of a deflection bevel 25. The deflection 25 is in this case designed so that it rests with its active surface on the transverse yoke 3 of the clamping arm of the contact spring 1. By sliding the carriage 23 in the longitudinal direction 5, the deflection bevel 25 slides along the transverse yoke 3, so that at the lower in the rest position of the actuator 26 lower portion 26 of the insertion abutting transverse yoke 3 on the effective surface of the deflection 25 slides along so long until it upper region 27 of the deflection bevel 25 has reached. The clamping arm of the contact spring 1 is completely pivoted in the pivoting direction 22 when the transverse yoke 3 rests against the upper region 27 of the deflection bevel 25. This movement show the Fig. 11 , the Fig. 7 , the Fig. 8 and the Fig. 9 ,

Starting from Fig. 11 the actuator is shown in the rest position. In Fig. 11 It can be seen that the lower region 26 of the deflection bevel 25 bears against the transverse yoke 3 of the clamping arm of the contact spring 1. By a finger pressure on the carriage 23, the carriage 23 is moved in the longitudinal direction 5 in the interior of the housing 24 inside. As a result of this movement, the clamping arm of the contact spring 1 slides along with the transverse yoke 3 on the deflection bevel 25 and disengages from the lower region 26 of the deflection bevel 25 and lies in the in Fig. 7 drawn open position at the upper portion 27 of the deflection bevel 25 at.

The carriage 23 is broken in the embodiment of two passage openings 28 in the longitudinal direction 5. The conductor 20 is inserted with its stripped end 21 through the passage opening 28 into the interior of the housing 24 and strikes in its final assembly position with the end face of its stripped end 21 on the intermediate leg 16 of the contact body 12, which in Fig. 8 is shown. Fig. 8 Consequently, shows the open position of the actuator with the upper portion 27 of the deflection 25 adjacent transverse yoke 3 and fully inserted stripped end 21 of the conductor 20. The stripped end 21 of the conductor 20 is in this case with its lateral surface on the contact legs 13 of the contact body 12 flush.

For clamping the conductor 20, the carriage 23 is moved in the longitudinal direction 5 out of the interior of the housing 24, as this Fig. 9 shows. The transverse yoke 3 of the clamping arm of the contact spring 1 and the deflection bevel 25 on the carriage 23 are thereby disengaged. The clamping arm of the contact spring 1, so the longitudinal arms 2, and connecting them cross yoke 3 pivot in the direction of rotation 22 back toward the contact legs 13 of the contact body 12, so that the clamping edge 6 abuts the clamp arm of the contact spring 1 at the stripped end 21 of the conductor 20 and so the stripped end 21 of the conductor 20 between them and the contact legs 13 of the contact body 12 firmly clamped. The stripped end 21 of the conductor 20 passes in this clamping position, the clamping arm of the contact spring 1 in the left between the longitudinal arms 2 clamping window eleventh

As an assembly aid when inserting the conductor 20, a pivotable in the pivoting direction 22 pawl 29 is provided on the outside of the housing 24. With the pawl 29 act on the outside of the carriage 23 integrally formed locking teeth 30 together. The ratchet teeth 30 form together with the pawl 29 a Zahnrichtgesperre. The ratchet teeth 30 each have on their underside a guide bevel 31. With the guide slope 31, the pawl 29 is moved in the pivoting direction 22 away from the housing 24 when the carriage 23 is pressed in the longitudinal direction 5 in the direction of the interior of the housing 24. In the in Fig. 7 . Fig. 8 and Fig. 15 illustrated opening position of the conductor terminal engages behind the upper of the two locking teeth 30 with its guide bevel 31 at right angles protruding from the carriage 23 locking surface 32, the upper limiting bracket 33 of the locking window 34 of the pawl 29. This is in the illustration of Fig. 15 particularly recognizable.

In contrast, the upper ratchet 30 passes through both in the rest position and in the clamping position of the conductor terminal arranged in the longitudinal direction 5 above the locking window 34 resting window 35 of the pawl 29, while the lower ratchet 30 abuts in these positions on the limiting bracket 33 of the locking window 34 in this position , Show this Fig. 11 . Fig. 12 and Fig. 14 , The locking teeth 30 are thus effective in the rest position and the clamping position of the conductor connection as a captive for the carriage 23.

In the event of failure of the toothed ratchet lock formed by the pawl 29 and the ratchet teeth 30, a further captive securing device for the carriage 23 is provided on the housing 24. On the housing 24 two housing projections 36 are formed. At each housing projection 36, a flat guideway 37 connects. On the flat guideway 37, a hook attached to the carriage 23 38 slides along when the carriage 23 is moved in the longitudinal direction 5. The outward movement of the carriage 23 out of the housing 24 in the longitudinal direction 5 is limited by the fact that the catch hook 38 in the rest position of the conductor connection and the actuating device engages behind the housing projection 36 assigned to it Fig. 14 is shown particularly well recognizable.

Finally, the actuator with the carriage 23 nor an automatic return mechanism for moving the carriage 23 from its open position during insertion of the conductor 20 back into the final assembly position according to Fig. 6 respectively. Fig. 9 respectively. Fig. 12 , For this purpose, a V-shaped guide slot 39 is introduced into the housing 24 on the housing 24 on the side facing away from the pawl 29 housing side. The V-shaped guide slot 39 has two facing inner surfaces 40. From the carriage 23 are in the longitudinal direction 5 two spring jaws 41 addition. The spring jaws 41 slide with their outer surfaces 42 on their facing inner surfaces 40 of the guide slot 39. Due to the V-shape of the guide slot 39, the spring jaws 41 are moved towards each other during insertion of the carriage 23 in the longitudinal direction 5 and so compressed. If the latching teeth 30 and the pawl 29 existing locking mechanism is released such that the upper latching tooth 30 is disengaged from the locking window 34, the spring force accumulator formed by the spring jaws 41 discharges its voltage. The gespreizte spring jaws 41 so press the inner surfaces 40 of the guide slot 39 to the outside and move the carriage 23 in the longitudinal direction 5 from the housing 24 out in his in Fig. 12 . Fig. 13 . Fig. 14 and Fig. 11 shown rest position or position with clamped conductor.

From the view of the Fig. 11 and Fig. 12 is also apparent that the conductor connection shown there and the actuator shown there for opening and closing the conductor connection are particularly well suited for connectors. The socket contact or plug contact of the connector is conductively connected to the conductor connection via the connecting leg 17. From the view of the Fig. 11 and Fig. 12 It is also clear that the space requirement of the contact body 12 on the one hand and the contact spring 11 on the other hand in the transverse direction and in the direction between the pawl 29 and the guide slot 39 is particularly low. This is based on the basic principle of the conductor connection, the same from one another in the longitudinal direction of the transverse yoke 3 and the two longitudinal arms 2 clamping arm of the contact spring 1 and the spring arm 8, wherein the spring arm 8 in the longitudinal direction 5 below the Clamping space for the conductor 20 is arranged. The terminal space for the conductor 20 is also used for the deflection of the existing of the transverse yoke 3 and the longitudinal arms 2 clamping arm of the contact spring 1 in the pivoting direction 22. Since the corresponding installation space in the longitudinal direction 5 beyond the intermediate leg 16 as installation space for the conductor 20 and Swing space for the contact spring 1 does not need to be used, the use of the arrangement of the spring arm 8 is very space-saving. All the more so as next to the spring arm 8 only the connection leg 17 in the corresponding space in the longitudinal direction 5 below or beyond the intermediate leg 16 must be accommodated.

LIST OF REFERENCE NUMBERS

1

contact spring

2

longitudinal arm

3

crosshead

4

transversely

5

longitudinal direction

6

clamping edge

7

arcuate area

8th

spring arm

9

bearing plate

10

fork-like projection

11

terminal window

12

Contact body

13

contact legs

14

Beading

15

Contact free arm end

16

intermediate leg

17

connecting leg

18

jaw

19

cloth

20

ladder

21

stripped end

22

pan direction

23

carriage

24

casing

25

inclined deflection

26

lower area

27

upper area

28

Through opening

29

pawl

30

ratchet

31

guide slope

32

blocking surface

33

limiting strap

34

lock window

35

idle windows

36

housing projection

37

guideway

38

hook

39

guide link

40

palm

41

spring-loaded jaw

42

outer surface

60

gore

61

rounding

62

contact strip

Claims (20)

1. Wire connection having an electrically conductive contact body (12) and having a contact spring (1) mounted on the contact body (12), said contact spring (1) having a clamping arm movable in relation to the contact body (12), wherein

   • the clamping arm is pierced by a clamping window (11),

   • the contact body (12) enters the clamping window (11) with a contact flange (13), and

   • the clamping arm is inclined relative to the contact flange (13),
   characterised in that
   the contact body (12) has a contact flange (13) extending in the lengthwise direction (5) and that an intermediate flange (16) is bent at a right angle from the contact flange (13) and that the contact spring (1) has at least one lengthwise arm (2) with a crescent-shaped zone (7) of a spring arm (8) and that the crescent-shaped zone (7) of the spring arm (8) is arranged underneath the intermediate flange (16) in the lengthwise direction (5).
2. Wire connection according to claim 1,
   characterised in that
   the free end of the clamping arm is bent outwards relative to the contact flange (13) to form a guide slope for the wire (20) to be connected.
3. Wire connection according to claim 1 or claim 2,
   characterised in that the free end (15) of the contact flange (13) is inclined and/or bent outwards relative to the clamping arm to form a guide slope for the wire (20) to be connected.
4. Wire connection according to one of claims 1 to 3,
   characterised in that

   • the clamping arm has lengthwise arms (2) bordering the contact flange (13) and a crossmember (3) joining the lengthwise arms (2) and forming the free end of the clamping arm, and

   • in a normal position, the bottom edge of the crossmember (3) facing the contact flange (13) fits on the contact flange (13), and

   • in a connecting position, the end of the wire (20) to be connected is clamped between the contact flange (13) and the bottom edge of the crossmember (3).
5. Wire connection according to claim 4,
   characterised by
   a contact strip (62) protruding from the contact surface of the contact flange (13) facing the clamping arm in such a way that the connected wire (20) is fastened between the bottom edge of the crossmember (3) configured as a clamping edge (6) and the contact strip (62) by clamping, in the manner of clamping jaws.
6. Wire connection according to claim 4 or 5,
   characterised in that
   the lengthwise arms (2) of the clamping arm taper trapezoidally from their fixed end toward their free end, the fixed end facing away from the free end.
7. Wire connection according to one of claims 1 to 6,
   characterised by
   a spring arm (8) of the contact spring (1) attaching to the fixed end of the clamping arm with a crescent-shaped spring zone (7) attaching to the clamping arm and a straight bearing zone borne on the contact body (12).
8. Wire connection according to claim 7,
   characterised in that
   the spring zone is composed of two crescent-shaped spring arms (8) prolonging the lengthwise arms (2) of the clamping arm towards the bearing zone.
9. Wire connection according to claim 7 or claim 8,
   characterised in that

   • the bearing zone of the spring arm (8) is configured as a bearing plate (9),

   • the ends of the spring arms (8) are formed on the bearing plate (9), and

   • the end of the bearing plate (9) facing away from the spring arms (8) bears two fork-like projections (10).
10. Wire connection according to claim 9,
    characterised in that
    the spring arms (8) form a V-shaped gusset (60) between themselves as a transverse margin of the clamping window (11) rimmed by the crossmember (3), the lengthwise arms (2) of the clamping arm, and the gusset (60), said transverse margin facing away from the crossmember (3).
11. Wire connection according to claim 10,
    characterised in that
    each "V" leg of the gusset (60) is rounded by means of a notch in the form of a circular segment.
12. Wire connection according to one of claims 1 to 11, characterised by

    • an intermediate flange (16) bent at a right angle from the contact flange (13) and serving as a mounting block for the end face of the wire (20) to be connected, and

    • a connection flange (17) for forming an offset contact body (12), said connection flange being bent at a right angle on the end of the intermediate flange (16) facing away from the contact flange (13).
13. Wire connection according to claim 12,
    characterised in that the connection flange (17) of the contact body (12) is wider than the contact flange (13) and the intermediate flange (16) in the crosswise direction (4).
14. Wire connection according to claim 9 and claim 13,
    characterised in that

    • the end of the intermediate flange (16) joining the intermediate flange (16) with the connection flange (17) is received between and bordered on both sides by the fork-like projections (10) of the bearing plate (9) of the contact spring (1),

    • two lugs (19) are bent outwards from the end of the connection flange (17) joining the intermediate flange (16) with the connection flange (17), on the flat sides of which the flat sides of the fork-like projections (10) fit flush, and

    • a clamping jaw (18) impinging on the bearing plate (9) is bent outwards from the intermediate flange (16) towards the contact spring.
15. Wire connection according to claim 14,
    characterised in that
    a rib (14) extending to the contact strip (62) and moulded in the contact body (12) attaches to the clamping jaw (18).
16. Wire connection according to one of the preceding claims,
    characterised in that
    said wire connection is arranged in the connection compartment of a housing (24) and that in said housing (24) is arranged a slide (23) capable of sliding in the lengthwise direction (5) and pierced by a through-opening (28) for at least one wire (20) to be connected, said slide (23) having a deflection slope (25) cinematically coupled to the free end of the clamping arm of the contact spring (1) for pivoting the clamping arm to and from its normal position and its open position when inserting the wire (20).
17. Wire connection according to claim 16,
    characterised in that
    the surface of the deflection slope (25) on the slide (23) and the surface of the free end of the clamping arm of the contact spring (1) bent outwardly relative to the contact body (12) face one another and slide upon one another to form a cam mechanism.
18. Wire connection according to claim 16 or claim 17,
    characterised by

    • at least one click tooth (30) pointing outwardly from the outside wall of the slide extending in the lengthwise direction (5), and

    • a catch (29) on the housing (24) which, in the open position of the slide (23), engages behind the click tooth (30).
19. Wire connection according to one of claims 16 to 18,
    characterised by
    two spring jaws (41) running in the lengthwise direction (5) and deflecting perpendicular to the lengthwise direction (5) on the slide (23) and further characterized by a V-shaped guide slot (39) on the housing (24) such that the outside surfaces (42) of the spring jaws (41) lie flat on the inside surfaces (40) of the guide slot (39) to form a spring-tensioned drive for returning the slide (23) from its open position to its normal position.
20. Wire connection according to claim 16 to 19,
    characterised by
    at least one housing projection (36) on the housing (24) and a catch hook (38) on the exterior of the slide, which engages behind the housing projection (36) in the normal position for securing the slide (23) in the housing.

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