EP1096606B1 - Connecting terminal - Google Patents

Abstract

A casing (14) holds a lift-up retainer (22) and has a first alignable opening to insert a cable end (24) and a second alignable opening to insert part of a wire carrier (10) into the lift-up retainer. A U-shaped clamp protector slides over part of the wire carrier that has a finger-shaped projecting part (30b) that can be inserted into a terminal connector to produce a power connection with the cable end.

Description

Technical field

The present invention relates to a connection terminal for connecting one end of the cable to one Conductor track of a circuit board, which is a housing has, in which a lift cage is arranged, the housing and the lift cage in each case a first alignable opening for insertion of a Have the cable end in the lift cage.

State of the art

Such terminals are generally known and are in the form of a Special embodiment shown in Figures 1A, 1B, 2A, 2B.

Starting from further connecting terminals known from the prior art, those with at least one solder pin per pole on an electronic carrier Circuit are attached, these form an improvement in terms mechanical and electrical reliability. In Figure 1A, the Reference number 10 a circuit carrier, single-layer or multi-layer, or one Busbar. Openings 12a, 12b are provided in the circuit carrier 10. in the Housing 14, two screws 16a, 16b are countersunk.

Figure 1B shows a section along the line A-A of Figure 1A. To recognize is the opening 12b in the circuit carrier 10 and the recessed in the housing 14 Screw 16b, which on a meandering solder pin 18th suppressed. The housing 14 has an opening 20 for inserting a cable. The housing 14 has an opening 20 for inserting a cable end 24 (see Fig. 2B). A lift cage 22 is arranged in the housing 14, which are moved relative to the housing 14 by turning the screw 16b can. In the lift cage 22 there is an opening 21 which is aligned with the opening 20 of the Housing 14 is aligned.

FIGS. 2A and 2B correlate with the representations of FIGS. 1A and 1B, with a cable end 24 now in the opening 20 of the housing 14, as well as into the opening 21 of the lift cage 22, the solder pin 18 in the opening 12b was inserted and fixed in this position by means of solder 26 has been. The cable end 24 is now - after moving the lift cage 22 through Turn the screw 16b upwards - conductively connected to the solder pin 18. The solder pin 18 in turn is conductive via the solder 26 with a conductor track 28 connected to the circuit carrier 10. Due to the meandering shape of the solder pin 18 increases the torsional elasticity and thus the solder joint relieved.

FR-A 2728107 discloses a connection block with two openings for Connect two cables. There is a movable one within the connection block Lift cage arranged with two openings as well as a fixed, electrical conductive connector. The lift cage encloses the fixed connecting part and is against the bottom of the connection block using a Spring supported. The lift cage is movable such that the openings of the Connecting blocks and the lift cage can be aligned to the both ends of the cable through the openings into the interior of the lift cage to be able to introduce. When assembled, the two are to be connected Cable ends inside the lift cage using one in the lift cage screw screwed in from above to the upper or lower side of the fixed, electrically conductive connecting part clamped.

Presentation of the invention

The present invention is based on the prior art according to FIGS. 1A, 1B, 2A, 2B the task of developing a generic terminal in such a way that the electrical resistance resulting from the solder joint is reduced becomes.

This problem is solved by a connection terminal with the features of claim 1. Characterized in that the housing and lift cage in alignment have orientable opening into which a finger-shaped projection of a Circuit carrier can be inserted into the lift cage, enables that a conductor track on the circuit board through a different position of the lift cage is pressed against one end of the cable. The fact that a Solder pin can be completely eliminated, the manufacturing costs are reduced. by virtue of the fact that there is no longer any need for soldering disappears the electrical resistance of the solder joint completely.

Because of the finger-shaped training and because of the fact that it is between several Terminal housing projecting vertically through the fingers of the circuit board the air and creepage distances and increase in an advantageous manner thus the dielectric strength between the individual poles of the terminal, provided several individual terminals according to the invention in a common housing be summarized. The terminal is more advantageous Way of insulating material.

In a particularly advantageous embodiment, the first and the second opening of the lift cage designed and connected together or these two openings merge into one another such that a conductive Connection between the cable end and a conductor track on the finger-shaped Projection of the circuit carrier can be produced. The lift cage can opposite the first and second opening of the housing, in particular through Turn a screw to be movable so that the conductive connection is fixable between the cable end and the conductor track. Alternatively, the Movability of the lift cage can be realized by a spring that extends to the Introducing the circuit carrier and the cable end in a first position and for fixing the cable end and the circuit carrier in a second Position. For ease of use, it has proven to be cheap the first and second openings on diametrically opposite sides of the To arrange the housing and the lift cage. A particularly stable embodiment results, however, when the first and second openings are on the same side the housing and the lift cage are arranged, in particular by a common Opening are formed.

For a better fixation of the connection between the circuit board and the housing the housing can have latching means which are connected to the circuit carrier interact.

In particular for weaker circuit carrier material can be used for manufacturing a conductive connection between at least one finger-shaped projection the circuit carrier and a terminal according to the invention be provided that a U-shaped pinch protection over the finger-shaped Projection of the circuit carrier is slidable to produce a Insert the conductive connection with the cable end into the connection terminal is.

The anti-trap device can have an anti-tip device Tilt at least the part of the circuit carrier inserted into the terminal prevented. For this purpose, a projection in the housing Interact the connection terminal with a recess in the clamping protection. A head start of the pinch protection as well as a cooperation with it Recesses in the connection terminal naturally have the same effect.

The pinch protection can be made of an electrically conductive and / or resilient Be made of material and have locking means that interact with the housing, to fix the pinch protection in the housing.

The invention also includes a circuit carrier for use with a Terminal according to the invention or for use in a system comprising a connecting terminal according to the invention and a clamping protection, wherein the circuit carrier has at least one finger-shaped projection, to establish a conductive connection with a cable end in the terminal is insertable. The finger-shaped projection can have locking means have with the locking means of the housing of the terminal interact. It can also have an anti-tip device, which prevents the finger-shaped projection from tilting in the connection terminal.

Further advantageous developments of the invention are in the subclaims Are defined.

Description of the drawings

Figur 1A

in Draufsicht eine schematische Darstellung eines Schaltungsträgers und einer Anschlußklemme aus dem Stand der Technik;

Figur 1B

eine teilweise entlang der Linie A-A von Figur 1A geschnittene Ansicht;

Figur 2A

eine mit Figur 1A korrespondierende Ansicht, bei der der Schaltungsträger und ein Kabelende in die Anschlußklemme eingeführt sind;

Figur 2B

eine entlang der Linie B-B von Figur 2A geschnittene Ansicht;

Figur 3A

eine teilweise entlang der Linie D-D von Fig. 3B geschnittene Ansicht einer erfindungsgemäßen Anschlußklemme sowie einen Teil eines erfindungsgemäßen Schaltungsträgers;

Figur 3B

eine teilweise entlang der Linie C-C von Figur 3A geschnittene Ansicht;

Figur 4A

eine teilweise entlang der Linie D-D von Fig. 4B geschnittene Ansicht einer erfindungsgemäßen Anschlußklemme nach Einführen eines erfindungsgemäßen Schaltungsträgers;

Figur 4B

eine entlang der Linie C-C von Figur 4A geschnittene Ansicht;

Figur 5

eine teilweise entlang der Linie C-C von Figur 4A geschnittene Ansicht, wobei nunmehr in die Anschlußklemme zusätzlich zum Schaltungsträger ein Kabelende eingeführt ist;

Figur 6

einen erfindungsgemäßen Klemmschutz;

Figur 7A

eine teilweise entlang der Linie D-D von Fig. 7B geschnittene Ansicht einer erfindungsgemäßen Anschlußklemme sowie einen Teil eines erfindungsgemäßen Schaltungsträgers;

Figur 7B

eine teilweise entlang der Linie C-C von Fig. 7A geschnittene Ansicht;

Figur 8A

eine teilweise entlang der Linie D-D von Fig. 8B geschnittene Ansicht einer erfindungsgemäßen Anschlußklemme nach Einführen eines erfindungsgemäßen Schaltungsträgers;

Figur 8B

eine entlang der Linie C-C von Figur 8A geschnittene Ansicht; und

Figur 9

eine teilweise entlang der Linie C-C von Figur 8A geschnittene Ansicht, wobei nunmehr in die Anschlußklemme zusätzlich zum Schaltungsträger ein Kabelende eingeführt ist.

Exemplary embodiments of the invention are described in more detail below with reference to the accompanying drawings. They represent:

Figure 1A

in plan view a schematic representation of a circuit carrier and a connecting terminal from the prior art;

Figure 1B

a view partially cut along the line AA of Figure 1A;

Figure 2A

a view corresponding to Figure 1A, in which the circuit carrier and a cable end are inserted into the terminal;

Figure 2B

a sectional view taken along line BB of Figure 2A;

Figure 3A

a partially cut along the line DD of Figure 3B view of a terminal according to the invention and part of a circuit carrier according to the invention;

Figure 3B

a view partially cut along the line CC of Figure 3A;

Figure 4A

a partial sectional view along line DD of Figure 4B of a terminal according to the invention after insertion of a circuit carrier according to the invention.

Figure 4B

a view cut along the line CC of Figure 4A;

Figure 5

a view partially cut along the line CC of Figure 4A, with a cable end is now inserted in addition to the circuit carrier in the terminal;

Figure 6

a pinch protection according to the invention;

Figure 7A

FIG. 7B shows a view, partly in section along line DD of FIG. 7B, of a connecting terminal according to the invention and part of a circuit carrier according to the invention;

Figure 7B

a view partially sectioned along the line CC of Fig. 7A;

Figure 8A

a partially sectioned line DD of Figure 8B view of a terminal according to the invention after insertion of a circuit carrier according to the invention;

Figure 8B

a view cut along the line CC of Figure 8A; and

Figure 9

a view partially cut along the line CC of Figure 8A, with a cable end is now inserted in addition to the circuit carrier in the terminal.

In FIGS. 1A to 9, identical components have the same reference symbols and are therefore not described separately. The easier representation half a connection terminal is shown in FIGS. 3A, 4A, 7A, 8A, which is constructed in two parts for the connection of two segments one Circuit carrier. Both parts of the connection terminal are constructed identically, one part being shown in plan view, the other in sectional view.

FIG. 3A shows a connecting terminal in a partially sectioned view a housing 14 which is for connection to two finger-shaped projections 30a, 30b of a circuit carrier 10 is provided. In the housing 14 is per connection unit a lift cage 22 is provided which is relative by means of a screw 16b can be moved to the housing 14. There are latching means 32a, 32b on the housing provided with locking means 34a, 34b on the finger-shaped projections 30a, 30b cooperate to form the connection between circuit carrier 10 and housing 14 to fix the terminal.

Figure 3B shows a section along the line C-C of Figure 3A. Conversely the section of Figure 3A is a view along the section line D-D of Figure 3B.

3B shows that the housing 14 has an opening 20 for feeding has a cable end and also an opening 36 for feeding of a finger-shaped projection 30a, 30b of the circuit carrier 10. By Lift 22 can rotate screw 16b as shown in FIG. 3B are moved up and down, whereby openings 21, 37 of the Lift cage 22 can be moved relative to the openings 20, 36 of the housing 14 can.

Figure 4A corresponds to the view of Figure 3B, but now the finger-shaped projection 30a through the opening 37 of the lift cage 22 aligned opening 36 of the housing 14 through into the lift cage 22 was introduced.

Figure 4B corresponds to Figure 3B and shows in a partially sectioned Cross-sectional view of the terminal after insertion of the finger-shaped Projection 30b in the lift cage 22.

FIG. 5 corresponds to FIG. 4B and now additionally shows the state after inserting a cable end 24 through the aligned openings 20 and 21 and then turning the screw 16b to the Lift 22 to move up, thereby tracing the trace 28 with the cable end 24 bring in electrically conductive connection. Because of the thread angle the screw 16b, the lift cage 22 can be fixed in this position.

Figure 6 shows a U-shaped pinch protection 38, as it is particularly for connection weaker circuit carrier material by an inventive Terminal with a cable end can be used. The Pinch protection is preferably made of resilient, especially electrical conductive material. It has a cavity 40 into which the finger-shaped Projection of the circuit carrier material is to be introduced. Furthermore has it on its upper and / or lower side locking means 42, around it in the housing 14 to fix the terminal. As anti-tip are closed on his End two recesses 44a, 44b (see also Figure 7A) provided the interact with projections 46a, 46b of the housing 14 of the connecting terminal, about a tilting of the circuit carrier material in the connection terminal to prevent.

FIG. 7A shows a connecting terminal in a partially sectioned view a housing 14 which is for connection to two finger-shaped projections 30a, 30b of a weaker circuit carrier 10 is provided.

Figure 7B shows a section along the line C-C of Figure 7A. Conversely the section of Figure 7A is a view taken along section line D-D of Figure 7B.

FIG. 7A shows a section through the closed end of the Pinch protection 38. FIG. 7B shows the pinch protection 38, arranged in the housing 14 of the connection terminal. The latching means 42 cooperate with the housing 14 and prevent the pinch protection from falling out of the housing 14.

FIG. 8A corresponds to the representation of FIG. 7A, the now Finger-shaped projection 30a of the circuit carrier 10 in the lift cage 22 of the Terminal was introduced.

Figure 8B shows this state in cross section. It can be clearly seen that the pinch protection 38 on both sides of the housing 14 in this way with the housing 14 is connected that tipping is prevented.

Figure 9 corresponds to the representation of Figure 8, but shows the state after inserting a cable end 24 and turning the screw 16b to the combination of pinch protection 38, circuit carrier 10 with conductor track 28 as well as to connect and fix the cable end 24 in an electrically conductive manner.

The use of a pinch protection 38 also offers the advantage that optionally both sides of the circuit carrier used for contacting can be, which is accompanied by a reduction in contact resistance or alternatively the upper or lower side of the circuit board can be contacted. Contacting the top of the circuit carrier 10 in the embodiment illustrated in FIGS. 3A to 5, achieved by appropriate arrangement of the openings 36, 20 and 37, 21 become.

In embodiments that are not shown, the fixing of the conductive Connection of a conductor track of the circuit carrier 10 to a cable end 24 by using a resilient snap mechanism. The snap mechanism can be done by hand or by a screwdriver be operable.

Claims (14)

1. Connecting terminal for connecting a cable end to a conductor track on a circuit board and having a housing (14) in which a lift cage (22) is arranged, with the housing (14) and the lift cage (22) each having a first opening (20,21) which can be aligned such that it is flush, for inserting a cable end (24) into the lift cage (22),
   characterized in that the housing (14) and the lift cage (22) each have a second opening (36,37), which can be aligned such that it is flush, and in that each of the second openings (36, 37), which can be aligned such that they are flush, in the housing (14) or in the lift cage (22) are designed for inserting a projection (30a,30b), which is in the form of a finger, of a circuit board (10) into the lift cage (22), and in that the first and the second opening (21,37) of the lift cage (22) are designed and connected to one another or merge into one another in such a way that a conductive connection can be produced between the cable end (24) and a conductor track (28) on the projection (30a,30b), which is in the form of a finger, of the circuit board (10).
2. Connecting terminal according to Claim 1, characterized in that the lift cage (22) is moveable with respect to the first and the second opening (20,36) in the housing (14) in such a way that the conductive connection between the cable end (24) and the conductor track (28) can be fixed.
3. Connecting terminal according to Claim 2, characterized in that the lift cage (22) can be moved by rotating a screw (16a,16b).
4. Connecting terminal according to one of the preceding claims, characterized in that the first and the second opening (20,21,36,37) are arranged on diametrically opposite sides of the housing (14) and of the lift cage (22).
5. Connecting terminal according to in one of Claims 1 to 3, characterized in that the first and the second opening (20,21,36,37) are arranged on the same side of the housing (14) and of the lift cage (22), and, in particular, are formed by a common opening.
6. Connecting terminal according to one of the preceding claims, characterized in that the housing (14) has latching means (32a,32b) which interact with the projection (30a,30b), which is in the form of a finger, of the circuit board (10) which is used for fixing the connection between the circuit board (10) and the housing (14).
7. Connecting terminal according to one of the preceding claims, characterized in that the connecting terminal furthermore comprises a U-shaped crushing protection device (38) which can be pushed over the part (30a,30b) of the circuit board (10).
8. Connecting terminal according to Claim 7, characterized in that the crushing protection device (38) has a tilting protection apparatus (44a, 44b) which prevents tilting of at least that part (30a,30b) of the circuit board (10) which is inserted into the connecting terminal.
9. Connecting terminal according to Claim 8, characterized in that the tilting protection apparatus comprises at least one cut-out (44a;44b) which interacts with at least one projection (46a;46b) in the housing of the connecting terminal.
10. Connecting terminal according to one of Claims 7 to 9, characterized in that the crushing protection device (38) is produced from an electrically conductive and/or resilient material.
11. Connecting terminal according to one of Claims 7 to 10, characterized in that the crushing protection device (38) has latching means (42) which interact with the housing (14) in order to fix the crushing protection device (38) in the housing (14).
12. Circuit board for use with a connecting terminal according to one of Claims 1 to 11, characterized in that the circuit board (10) has at least one projection (30a,30b) which is in the form of a finger and can be inserted into the connecting terminal in order to produce a conductive connection to a cable end (24).
13. Circuit board according to Claim 12, characterized in that the projection (30a,30b) which is in the form of a finger has latching means (34a,34b) which interact with the latching means (32a,32b) on the housing (14) of the connecting terminal according to Claim 6.
14. Circuit board according to one of Claims 12 or 13, characterized in that the projection (30a,30b) which is in the form of a finger has a tilting protection apparatus which prevents tilting of at least the projection, which is in the form of a finger, in the connecting terminal.

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