EP1816707B1 - Terminal block for electrical apparatus , especially for plugs - Google Patents

Abstract

The block has rows of ports, where each port has an insulation-permeating contact such as edge contact (14) arranged in a one-side open connection chamber (5) of an insulation material housing (2). Operating units (19) are assigned to the contacts. Slots (10) are formed between partition walls (6) of the chambers and the operating units or between the adjacent operating units for inserting a screw driver. The operating units have step like attachment contours, at which the operating units are attachable, such that the units lever out from the connection chambers for disconnecting the contacts.

Description

The invention relates to a terminal block according to the preamble of claim 1.

The state of the art is the EP 0 936 697 A1 , the EP 1 191 633 A2 and the EP 1 191 634 A2 called. To connect and disconnect here in a Isolierstoffgehäuse each contact actuators are movable, in particular slidably guided, with which the actual contacts or metal parts of the connecting devices and switches off and the ladder can be moved in and out of the contacts.

The attachment of an actuating tool, in particular a screwdriver, takes place on opposite sides of the contact actuation pieces in order to push the conductor out of the IDC contact during the switching process and out of it during the disconnection. The direction of movement of the screwdriver when loading and unloading is thus offset by 180 ° to each other. This type of actuation according to the prior art has proven itself very well, in particular, since very high loading and disengaging forces are absorbed.

The DE 30 34 570 A1 discloses an electrical conductor connection terminal having a terminal for conductors with an actuator provided with lug contours.

From the generic DE 20 2004 013 363 U1 It is also known to provide the contact actuator with a flexible portion which is for example band-like and guided and deflected in such an insulating housing, that it is possible to perform the actuation of the Kontaktbetätigungsstückes for loading and final switching from the same direction, which especially simple and easy to understand handling of Kontaktbetätigungsstückes or the entire terminal block allows. Although this handling is very simple, the band needs some additional space.

The invention has the object to create a space-optimized terminal block, which is constructed cost-effective and space-optimized while still being easy to handle against this background.

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

The wiring is done in a single operation. To release a conductor or to switch it off, one or more, e.g. three lever movements required. The release is thus somewhat more complicated than the wiring. This is offset by the extremely compact design and the high reliability of the terminal block, which allows a particularly secure loading and Endschalt.

The actuating element has a blind hole-like Leitereinführöffhung with an inner conductor stop, which is particularly compact construction aligned at an acute angle to the operating direction or direction of movement of the actuating element. Preferably, this acute angle is 20 to 70 °, in particular 30 to 60 °.

It is expedient if the conductor insertion opening merges into the outer surface of the actuating element in a channel-like or groove-like conductor receiving area. When the actuator is pressed in, the conductor lays against the intermediate wall to the adjacent row of terminal chambers and then into the conductor receiving area.

Preferably, the groove or groove-like conductor receiving area extends parallel to the actuating direction of the actuating element and the conductor is pressed after its contacting in the conductor receiving area and protrudes outwardly from the open side of the connecting chamber.

Preferably, the actuator has a lug which engages a slot in one of the walls defining the terminal chambers, the lug and the slot having corresponding latching contours and wherein the lug is latchable in the slot in at least one or more positions. As a result, the disconnected and the switched position are easily recognizable or even noticeable and the conductor extension resistance is increased.

Further advantageous embodiments can be found in the remaining subclaims.

Fig. 1

eine teilweise aufgebrochene, perspektivische Ansicht einer ersten Anschlussleiste;

Fig. 2a,b bis 4a,b

die Anschlussleiste aus Fig. 1 mit einem teilweise aufgebrochen dargestellten Kontaktbetätigungsstück mit einem eingeführten Leiterstück während verschiedener aufeinander folgender Phasen der Beschaltung;

Fig. 5

eine teilweise aufgebrochene, perspektivische Ansicht einer zweiten Anschlussleiste;

Fig. 6a,b bis 7a,b

die Anschlussleiste aus Fig. 5 mit einem teilweise aufgebrochen dargestellten Kontaktbetätigungsstück mit einem eingeführten Leiterstück während verschiedener aufeinander folgender Phasen der Beschaltung; und

Fig. 8a-c

eine weitere Anschlussleiste in verschiedenen Ansichten und Montagezuständen; und

Fig. 9a-c

die Betätigung der Anschlussleiste aus Fig. 8 mit einem Schraubendreher in verschiedenen Ansichten.

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

Fig. 1

a partially broken, perspective view of a first terminal block;

Fig. 2a, b to 4a, b

the terminal block off Fig. 1 a contact actuator, partially broken away, having an inserted conductor portion during various successive phases of the circuitry;

Fig. 5

a partially broken, perspective view of a second terminal block;

Fig. 6a, b to 7a, b

the terminal block off Fig. 5 a contact actuator, partially broken away, having an inserted conductor portion during various successive phases of the circuitry; and

Fig. 8a-c

another terminal block in different views and mounting conditions; and

Fig. 9a-c

the actuation of the terminal block Fig. 8 with a screwdriver in different views.

Fig. 1 to 4 show a first terminal block 1 with a housing 2 made of insulating material, which has two rows 3, 4 of unilaterally open connection chambers 5.

The connection chambers 5 have a kind of rectangular shape in their plan view from their open side. The adjacent connection chambers 5 of each row 3, 4 are separated from each other on the longer sides of the rectangles by intermediate walls 6. The shorter inner walls 7 of the connection chambers separate the two connection rows 3, 4 from one another in the manner of a center wall. At the opposite ends or on the outer sides of the connection chambers, the connection chambers 5 are additionally delimited by outer walls 8, 9 which each have a slot 10 extending in the direction of actuation x (which will be explained in more detail below) in the area of each connection chamber 5 is provided in the upper and lower region with a constriction-like constriction 11.

In each of the connection chambers 5, a connection device 12 for connection of a conductor 13 with one or more conductor wire (s) and a surrounding this insulation is arranged.

The connecting devices 12 here each have an insulation-penetrating contact, in particular an (IDC) cutting contact 14, with two completely or substantially lying in a plane or slightly angled contact knives 15, at their free ends an insertion mouth is formed with cutting edges and between which there is a contacting gap.

A U-shaped over-spring 13 serves to press the contact blades 15 on each other to produce a sufficient contact force. This U-shaped over-spring 13 is here in the manner of the generic state of the art DE 20 2004 013 363 U1 oriented perpendicular to the contact blades 15 so that their base leg is penetrated by the contact blades 15 in the area facing away from the insertion of the IDC contact area.

At the ends facing away from the insertion of the cutting contacts 14 16 further contacts, here female contacts 17 are integrally connected or attached, which are located in second connection chambers 18 of the housing 2 and, for example, for attachment to a row of pins and for contacting the row of pins (not here shown) of an electrical device - eg a plug or other device - used. The contacts 14 and 17 are produced from a profiled milled band.

As an aid for introducing the conductor into the cutting contact 14 is a movable in the housing, in particular displaceably guided actuator 19, which may be formed in one or more pieces and preferably consists of an insulating plastic.

The actuators 19 are in the non-contacted state, in which a conductor 26 is inserted into the actuator 19, in each case from the open ends of the connection chambers 5 to the outside. In this case, a blind hole-like conductor insertion opening 20 (FIG. Fig. 2b ), which is aligned at an angle of 90 ° or less, here at an acute angle, preferably at an angle of 30 to 60 °, to the actuating direction or movement direction X of the actuating element 19.

If a conductor 26 is inserted into the conductor insertion opening 20, its end region in the blind hole-like conductor insertion opening is also at this angle alpha acute angle to the plane of the cutting contact 14. The conductor 26 is therefore also cut and contacted at an acute angle to its longitudinal axis when pushed onto the isolationsdurchdringenden contact 14.

The conductor insertion opening 20 merges with the outer surface of the actuating element into a groove-like or ladder-type conductor receiving region 25 which is here formed on the side of the actuating element 19 lying to the middle wall 7 and which extends into the region of the upper corner of the actuating element 19.

This has the following effect.

For wiring is on the type of Fig. 2 a conductor 26 is inserted into the conductor insertion opening 20 as in Fig. 2 can be seen, the conductor 26 is aligned at an acute angle at an acute angle to the direction of movement X of the contact actuating piece. The conductor 26 lies in front of the insertion of the cutting contact 14th

Now, the actuator 19- preferably with a tool such as a screwdriver - in the connection chamber 5 inward or in the representation of Fig. 1 moved down.

In this case, the separating contact 14 penetrates the conductor insulation and realizes a conductive contact with the conductor or cores ( Fig. 3 to 4 ). Preferably, at the same time, the conductor 26 is bent in its region in which it protrudes outward from the contact actuating piece, from the chamber wall adjacent to the conductor receiving region 25, in this case the middle wall 7, next to the cutting contact 14. Fig. 4 ), so that it lies in its outer (relative to the blind hole-like end of the conductor receiving opening 19 and adjoining the cutting contact 14 area) parallel to the actuating direction in the channel. This arrangement is in Fig. 4 to recognize. The end of the conductor is at an acute angle to the direction of movement of the actuating element 19. In this acute-angled orientation and the contacting of the conductor takes place. In the connected state, the conductor 26 is then parallel to the actuating direction or sliding direction of the actuating element 19th

With this arrangement, it is possible to arrange two rows of terminals 14 on the terminal block 1 directly adjacent to one another even in a small space.

To connect the screwdriver is preferably inserted vertically from above into a lug contour 24 of the actuating element 19.

The switch-off is carried out from the same direction, ie from the open side of the Anschlußkammem ago. For this purpose, the screwdriver is inserted laterally of the lug contour 24 laterally into a free slot-like region 28 between adjacent actuating elements 5 or between the actuating elements 5 and the intermediate walls 6. The actuating element 19 is in turn courage here at least one or more - preferably offset in the sliding direction X, parallel to each other - approach contour (s) 27 provided for attachment of the screwdriver, in which the free end of the screwdriver can be introduced.

Then, the actuating element 19 is levered out of the switched position, wherein the intermediate walls 6 between the connection chambers 5 or the adjacent actuating elements 19 themselves - if the intermediate walls are not formed continuously - are used as an abutment for the screwdriver. If several approach contours 27 are present, the actuating element 19 can be released with several lever movements. Thus, the switching-off of the cutting contact 14 is not quite as easy as the wiring. Since, however, only in rare cases, for example in the case of faulty circuits, it is generally necessary to disconnect the connected contacts again, this additional expenditure is justifiable. It is more than compensated by the extremely compact design. Thus, this terminal block is particularly advantageous where a compact design using a insulation piercing contact with a screwdriver actuated actuator 19 is desired

In particular, in the disconnected state and preferably also in the connected state engages in the lateral slot 10 in the wall 8 a here bone-shaped projection 21 of the contact actuating piece, which locks the contact actuating piece in the disconnected state and possibly also in the connected state. The slot 10 and the projection 21 therefore form cooperating locking elements.

It should be noted that the case here u.a. for the formation of functional elements (miscarriage, anchoring of the metal assembly) consists of an upper housing part with the cutting contacts and the connection chambers 5 and a lower housing part with the tulip contacts 17. Theoretically, another one or more pieces structure are conceivable.

It should also be noted that the actuator 19 when wiring against a stop 29 in the insulating material runs. The metal module is also securely supported in the insulating housing.

To Fig. 1 Two-row arrangements are realized eg with 2 * 20 connection chambers. The wiring and disconnection, as well as the assembly and the ladder extension, are from a single direction.

The embodiment of Fig. 5 in contrast, is particularly suitable for embodiments in which only a single row of connection chambers (eg 20) to be realized. As a result, there is sufficient space available to supply the conductor perpendicular to the actuation direction. Therefore, the blind hole-like Leitereinführöffnung 19 'in the actuator 19 are also aligned perpendicular to the direction of actuation. A conductor receiving area on the outside of the actuating element 19 is not required.

The wiring is again by depressing the actuator, which can also be done by hand. The de-connection is analogous to the embodiment of Fig. 1 with the screwdriver. The wiring and the disconnection, as well as the assembly and the circuit breaker again take place from a single direction, resulting in a compact design.

The embodiment of Fig. 8 and 9 is essentially the same as the Fig. 1 to 4 , But has a special feature over this, which also in the embodiment of Fig. 5 and 6 and 7 or other variants of the invention, which is not limited to the illustrated embodiments, can be used. Operation, ie the switching on and off with the screwdriver 32 (FIG. Fig. 9 ) and the conductor supply and conductor removal takes place as in the embodiment of Fig. 1 to 4 , The connection strip 1 is the Fig. 8 and 9 provided with at least one or more projections 30 for the realization of a false plug protection. These projections 30 - in Fig. 8 and 9 dashed lines are formed on the intermediate walls 6 and project from them in the direction of the actuators 19 in the manner of web-like lugs. Here, the intermediate walls 6 are each provided on both sides with the projections 30, which contributes to a particularly good misfire protection. The projections 30 prevent misfiring of the screwdriver 32 and also optimize the leadership of the actuators 19. Preferably, they are with the open side of the terminal block (in Fig. 8 towards the top) each provided with an insertion bevel 31, which contributes to the screwdriver 32 (FIG. Fig. 9 ) when inserting.

In addition / alternatively, the displaceable actuating element 19 itself may be provided with contours preferably corresponding to the projections 30, such as webs 33 or recesses which, on the one hand, optimize the guidance and / or the incorrectness of the actuating element 19.

reference numeral

terminal block

1

casing

2

string

3.4

connection chambers

5

partitions

6

partitions

7

exterior walls

8, 9

opening slot

10

bottleneck

11

connecting device

12

by spring

13

cutting Contact

14

contact blade

15

Busbar pieces

16

tulip contacts

17

connection chambers

18

actuator

19

Conductor insertion opening

20

bone-like approach

21

Housing top

22

Housing bottom

23

approach contour

24

Conductor receiving area

25

ladder

26

approach contour

27

slot-like area

28

attack

29

projections

30

chamfer

31

screwdriver

32

Stege

33

movement direction

X

Claims (16)

1. Terminal block for electrical devices, with one or several rows of connectors, which respectively comprise an insulation-permeating contact (14) arranged in a connection chamber of an insulating material housing (2), to which is assigned an actuation element (19), wherein the connection and the disconnection takes place with a conductor (26) from an open side of the connection chamber, wherein a slot is respectively formed between the intermediate walls of the connection chambers (5) and the actuation elements (19) or between adjacent actuation elements (19) for introducing a screw driver, characterised in that

   a. the actuation element (19) comprises several lug regions, to which the screw driver can be attached, so that the actuation element can be lifted from the connection chamber for disconnecting the contact (14), and

   b. the actuation element (19) comprises a conductor insertion opening (20) formed as a blind hole with an inner conductor stop, which is aligned with an acute angle to the actuation direction or movement direction of the actuation element (19).
2. Terminal block according to claim 1, characterised in that the conductor insertion opening (20) is aligned with an acute angle with an angle of 20 to 70° to the actuation direction or movement direction of the actuation element (19).
3. Terminal block according to claim 2, characterised in that the conductor insertion opening (20) is aligned with an acute angle with an angle of 30 to 60° to the actuation direction or movement direction of the actuation element (19).
4. Terminal block according to one of the preceding claims, characterised in that the conductor insertion opening (20) passes into a channel- or groove-like conductor reception region (25) towards the outer surface of the actuation element.
5. Terminal block according to claim 4, characterised in that the channel- or groove-like conductor reception region (25) abuts a wall of the connection chambers.
6. Terminal block according to claim 4, characterised in that the channel- or groove-like conductor reception region (25) extends parallel to the actuation direction (x) of the actuation element (19), and that the conductor is pressed into the conductor recption region after contacting and projects outward from the open side of the connection chamber.
7. Terminal block according to one of the preceding claims, characterised in that the lug regions of the actuation element (19) comprise step-like lug contours.
8. Terminal block according to one of the preceding claims, characterised in that the actuation element (19) comprises a lug (21) engaging a slot (10) in one of the walls which limit the connection chambers (5), wherein the lug (21) and the slot (10) comprise corresponding locking contours, and wherein the lug (21) can be locked in the slot (20) in at least one or several positions.
9. Terminal block according to one of the preceding claims, characterised in that each blade contact (14) is connected to a further contact (17) in one piece.
10. Terminal block according to one of the preceding claims, characterised in that the housing consists of an upper housing part (22) with the blade contacts and a spring member and the connection chambers (5) and a lower housing part (23) with a further contact row.
11. Terminal block according to one of the preceding claims, characterised in that the two connection rows (3, 4) of one embodiment with at least two rows are separated by a centre wall.
12. Terminal block according to one of the preceding claims, characterised in that the connection chambers are open on one side.
13. Terminal block according to one of the preceding claims, characterised in that the terminal block (1), preferably one or several of the intermediate walls (6) of the terminal block (1), are provided with at least one projection (30) or several projections (30) for realising a protection against mismating.
14. Terminal block according to claim 13, characterised in that the projections (30) are formed at the intermediate walls (6) and project from these on one or both sides according to web-like ribs.
15. Terminal block according to claim 13, characterised in that the projections (30) are respectively provided with an inclined insertion device (31) towards the open side of the terminal block.
16. Terminal block according to claim 13, characterised in that the actuation element (19) is provided with contours such as webs (33) and/or recesses preferably corresponding to the projections (30), which optimise the guidance on the one hand and/or also the faulty connection safety of the actuation element (19).

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