EP2234212A1 - Actuation device for a conduit connection - Google Patents

Abstract

The actuating device has a slide (23) longitudinally displaced in a housing (24) in cable entry direction from a through opening (28) for a conductor (20). The conductor is connected with a deflecting chamfer kinematically coupled with the free end of the clamp arm for pivoting the clamp arm between its resting position and its open position during insertion or detachment of the conductor.

Description

The invention relates to an actuating device for a connection of an electrical conductor to a contact element. The contact element is in this case arranged in a housing. The contact element is composed of a contact body and a contact spring. When the contact body is in the connected state of the electrical conductor with a stripped end conductive. The contact body is configured in an advantageous embodiment as a stamped and bent part. It is also possible to produce it from solid material, for example, from solid material to milling.

The contact spring has at least one contact arm pivotable relative to the contact body. The actuator is for actuating the pivotable contact arm.

The actuating device initially has a slide fixed in the 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 between its rest position and its open position during insertion of the conductor and between its Montageendposition and its open position when releasing the conductor can be pivoted. 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. Due to the longitudinal sliding movement of the carriage, the free end of the clamping arm slides on the corresponding Guide surfaces of the deflection from and 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 is flowing in the longitudinal direction 5 in the over it associated longitudinal arm 2. 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 Kontaktschenkelfreiende 15 is bent to form an insertion bevel. 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 of the contact body 12 passes through the contact spring 1 in the clamping window 11. The contact leg 13 extends in the longitudinal direction 5, while the longitudinal arms. 2 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, wherein the longitudinal direction 5 is identical to the conductor insertion direction. 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 arms 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 in 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 serves the actuator. 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 of 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 shows therefore the open position of the actuator with the upper portion 27 of the Auslenkschräge 25 fitting transverse yoke 3 and fully inserted stripped end 21 of the conductor 20. Das 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 latching tooth 30 extends through in the longitudinal direction 5 above, both in the rest position and in the clamping position of the conductor connection the lock window 34 arranged quiet window 35 of the pawl 29, while the lower latching tooth 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, discharges the formed by the spring jaws 41 Spring energy storage its tension. The spring jaws 41 spread out against the inner surfaces 40 of the guide slot 39 to the outside and move so 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 5, the spring arm 8 arranged in the longitudinal direction 5 below the terminal space for the conductor 20 from the transverse yoke 3 and the two longitudinal arms 2 existing clamping arm of the contact spring 1 and the spring arm 8 is. 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 (5)

Actuating device for a connector (12) fixed in a housing (24) and a contact spring (1) with a connection for an electrical conductor (20) comprising a clamping arm pivotable relative to the contact body (12),
marked by
a longitudinally displaceable in the housing in the conductor insertion direction, by at least one passage opening (28) for at least one conductor to be connected slide (23) with a kinematically coupled to the free end of the clamping arm deflection bevel (25) for pivoting the clamping arm between its rest position and its open position during insertion or release of the conductor (20). Actuating device according to claim 1,
characterized,
that the mutually facing surfaces of the deflection bevel (25) on the carriage (23) and of the free end of the clamping arm of the contact spring (1), which is curved relative to the contact body (12), slide on one another to form a cam mechanism. Actuating device according to claim 1 or 2,
marked
by at least one latching tooth (30) pointing outward from a slide outer wall extending in the conductor insertion direction and by a pawl (29) engaging behind the latching tooth (30) in the open position of the carriage (23) on the housing (24). Actuating device according to one of claims 1 to 3,
marked by
two runs in the conductor insertion direction transverse einfedernde to the conductor insertion direction of the spring jaws (41) on the carriage and by a V-shaped guide slot (39) on the housing (24) such that the outer surfaces (40) of the spring jaws (41) on the inner surfaces (40) of the Guide slot (39) abut to form a spring-driven reset actuator for the carriage (23) from its open position back to its rest position. Actuating device according to one of the preceding claims,
marked by
at least one housing projection (36) on the housing (24) and a the housing projection (36) in the rest position engages behind Fanghaken (38) on the slide outer side for fixing the carriage (23) in the housing (24).

Images