EP1763107B1 - Terminal with an insulating housing - Google Patents

Description

The invention relates to a terminal with an insulating housing, in which a busbar and at least one clamping spring is arranged, wherein a fixed end of the clamping spring on the busbar and a flexible end of the clamping spring elastically abuts against an abutment, and at least one conductor opening is provided in the insulating housing , through which a conductor between the abutment and the clamping spring can be plugged.

From the DE 101 03 107 A1 and from further state of the art busbars are known which have terminals with bent portions for contacting conductors. These busbars are manufactured in several steps, which include a bending of these sections of the busbar, making the production of the busbar more expensive.

From the document EP 1 353 407 A1 is known a terminal in which a busbar and at least one clamping spring are formed. With the help of the clamping spring a plug-in conductor is pressed against the busbar after insertion. In one embodiment, the busbar is mounted upright on a further busbar. With the help of the clamping spring here also a plug-in conductor is pressed against the abutment-forming busbar.

The object of the invention is to provide a busbar that is easier to manufacture.

This object is achieved in a generic terminal in that the abutment is plugged onto the busbar and the flexible end of the clamping spring presses a stop surface of the abutment against the busbar.

The clamping spring is advantageous for producing a contact pressure firmly against the abutment surface of the abutment.

Preferably, the clamping spring is a leaf spring and has a U-shape. In an advantageous embodiment, the clamping spring is attached with its fixed end to the busbar.

Preferably, the busbar is a flat stamped part and has a holding claw.

The abutment may have a plug-in opening for plugging onto the busbar and be produced as a stamped part, wherein the plug-in opening is advantageously formed slot-shaped for receiving the retaining claw of the busbar.

According to a further feature of the invention, the abutment in a cross section perpendicular to the insertion direction of the conductor has a U-shape, wherein the busbar between the legs of the U-shaped abutment is arranged. Advantageously, the legs of the U-shaped abutment taper conically.

In an alternative embodiment, a flange of the U-shaped abutment has an angled flange at a right angle, which is provided with a centering recess starting from the outside.

Fig. 1

eine Seitenansicht eines Widerlagers zum Aufstecken auf eine Stromschiene der erfindungsgemäßen Anschlußklemme;

Fig. 2

eine Frontansicht des Widerlagers der Fig. 1;

Fig. 3

eine Draufsicht des Widerlagers der Fig. 1;

Fig. 4

eine perspektivische Ansicht des Widerlagers der Fig. 1;

Fig. 5

eine Seitenansicht einer alternativen Ausführungsform eines Widerlagers zum Aufstecken auf eine Stromschiene der erfindungsgemäßen Anschlußklemme;

Fig. 6

eine Frontansicht des Widerlagers der Fig. 5;

Fig. 7

eine Draufsicht des Widerlagers der Fig. 5;

Fig. 8

eine perspektivische Ansicht des Widerlagers der Fig. 5;

Fig. 9

eine perspektivische Ansicht der Stromschiene der erfindungsgemäßen Anschlußklemme;

Fig. 10

eine weitere perspektivische Ansicht der Stromschiene der Fig. 9;

Fig. 11

einen Teilausschnitt einer Frontansicht der Stromschiene der Fig. 9, die ein Aufstecken des Widerlagers der Fig. 1 auf die Stromschiene zeigt;

Fig. 12

eine Ansicht ähnlich zu der Fig. 11, wobei jedoch eine Klemmfeder auf die Stromschiene aufgesteckt ist und mit einem elastischen Ende gegen das Widerlager drückt;

Fig. 13

eine Ansicht ähnlich zu der Fig. 12, wobei jedoch ein Leiter zwischen dem flexiblen Ende der Klemmfeder und dem Widerlager angeordnet ist; und

Fig. 14

eine Frontansicht der erfindungsgemäßen Anschlußklemme.

Embodiments of the invention are explained below with reference to a drawing. Show it:

Fig. 1

a side view of an abutment for mounting on a power rail of the terminal according to the invention;

Fig. 2

a front view of the abutment of the Fig. 1 ;

Fig. 3

a plan view of the abutment of Fig. 1 ;

Fig. 4

a perspective view of the abutment of Fig. 1 ;

Fig. 5

a side view of an alternative embodiment of an abutment for mounting on a busbar of the terminal according to the invention;

Fig. 6

a front view of the abutment of the Fig. 5 ;

Fig. 7

a plan view of the abutment of Fig. 5 ;

Fig. 8

a perspective view of the abutment of Fig. 5 ;

Fig. 9

a perspective view of the busbar of the terminal according to the invention;

Fig. 10

another perspective view of the busbar the Fig. 9 ;

Fig. 11

a partial section of a front view of the busbar the Fig. 9 putting on the abutment of the Fig. 1 pointing to the power rail;

Fig. 12

a view similar to the Fig. 11 However, wherein a clamping spring is attached to the busbar and presses with an elastic end against the abutment;

Fig. 13

a view similar to the Fig. 12 but wherein a conductor is disposed between the flexible end of the clamping spring and the abutment; and

Fig. 14

a front view of the terminal according to the invention.

An abutment 9 in the FIGS. 1 to 4 has in plan view the FIG. 3 essentially a U-shape with two legs 23 and a flange 25, wherein the legs 23 are conical to each other.

In the flange 25, a plug-in opening 19 is provided, which in the view of FIG. 2 slits from top to bottom. Inside, below the insertion opening 19, a stop surface 15W is provided, as in FIG. 4 shown.

The abutment 9 is punched out of a sheet metal strip so that it is formed as a one-piece stamped part.

FIGS. 9 and 10 show a bus bar 5, which is stamped as a flat punched part of a sheet metal strip. The busbar 5 has at opposite ends in each case a retaining claw 17. Further, a stop surface 15 S is formed at opposite ends of the bus bar 5 respectively.

FIG. 11 shows an intermediate step in the attachment of the abutment 9 of FIGS. 1 to 4 on the busbar 5 of the FIGS. 9 and 10 ,

The retaining claw 17 of the busbar 5 is inserted into the insertion opening 19 of the abutment 9, and the abutment 9 is subsequently pivoted along the pivoting direction S to the retaining claw 17 until the in FIG. 12 is reached, in which the abutment surface 15W of the abutment 9 rests against the stop surface 15S of the bus bar 5.

If the abutment 9 is arranged on the busbar 5, then a clamping spring 7, in the present case a substantially U-shaped leaf spring, is arranged between the abutment 9 and the busbar 5.

For this purpose, a fixed end 7S of the clamping spring 7 is arranged between a first contact surface 311 and an opposing second contact surface 312 of the busbar 5 in order to connect the clamping spring 7 to the busbar 5.

A flexible end 7f of the clamping spring 7 lies elastically on an in FIG. 12 upper end of the abutment 9, whereby the contact surfaces 15W, 15S are pivoted about the retaining claw 17 pressed together.

The attachment of an abutment 9 on the busbar 5 and the holding of the abutment 9 on the busbar 5 by means of the clamping spring 7 has been described with reference to the FIGS. 11 and 12 described and illustrated with respect to one end of the bus bar 5. At the opposite end of the busbar 5, another abutment 9 is held in the same manner on the busbar 5 by a further clamping spring 7.

FIG. 13 shows a view similar to the FIG. 12 However, wherein a conductor 13 between the flexible end 7f of the clamping spring 7 and the abutment 9 is arranged.

A force exerted by the flexible end 7f of the clamping spring 7 on the abutment 9 force is transmitted through the conductor 13 to the abutment 9, so that the contact surfaces 15W, 15 S continue to be pivoted about the retaining claws 17 pressed together.

FIG. 14 shows a terminal 1 according to the invention with an insulating housing 3, in which the busbar 5 is arranged, wherein at opposite ends of the busbar 5 each have an abutment 9 and a clamping spring 7 are arranged.

The insulating housing 3 is injection molded from a plastic material and has two mating crosses 33, to which the busbar 5 is inserted by means of adapted plug-in openings 35 in order to fix the busbar 5 in the insulating housing 3.

The clamping springs 7 are respectively placed around a column-like protruding bending element 37, the lower end 37u can ablieen the busbar 5, to additionally fix the busbar 5 in the insulating housing 3.

An upper bending portion 37 o B of the bending element 37 has a distance from the insulating housing 3, whereby a clearance between the flexure 37 and the insulating housing 3 is formed, through which the clamping spring 7 in FIG. 14 is pivoted down when a conductor 13 inserted through a conductor opening 11 along a plug-in direction 21 in the insulating housing 3 and between the flexible end 7f of the clamping spring 7 and the associated abutment 9 is arranged.

In order to facilitate a release of a plugged into the terminal 1 conductor 13 from this, may be provided parallel to the conductor opening 11, an opening through which a screwdriver in the insulating housing 3 is plugged so that the flexible end 7f of the clamping spring 7 by the screwdriver is pivoted in the direction of the busbar 5, whereby the conductor 13 is no longer pressed by the clamping spring 7 against the abutment 9 and can be removed from the terminal 1.

In the FIGS. 5 to 8 an abutment 9 'is shown, the alternative to the abutment 9 of the FIGS. 1 to 4 usable in the terminal 1 according to the invention.

The abutment 9 'is substantially identical to the abutment 9, so that following only a difference between the two abutments 9, 9' is described.

Instead of the legs 23, the abutment 9 'has a bent at a right angle relative to the flange 25 flange portion 27 in which a Zentrierausnehmung 29 is formed from the outside.

If the abutment 9 'is placed on the busbar 5, as described above for the abutment 9, the centering recess 29 engages around a centering projection 39 which is formed on the busbar 5, in order in this way an in FIG. 5 align lower end of the abutment 9 'on the busbar 5.

The busbar 5 of the terminal 1 according to the invention can be produced as a flat stamped part of a metal strip, so that the production of the busbar 5 is considerably simplified.

The abutments 9, 9 'are held by the clamping spring 7 on the busbar 5, so that the abutment 9, 9' need not be connected via a welding, soldering or riveting with the busbar 5.

Since the abutment 9, 9 'of the busbar 5 are dissolved components, they can be plugged in different terminal types, on geometrically different busbars, or installed.

List of reference signs:

1

terminal

3

insulating

5

conductor rail

7

clamping spring

7s

fixed end of the clamping spring

7f

flexible end of the clamping spring

9

abutment

9 '

Abutment in an alternative embodiment ( FIGS. 5 to 8 )

11

conductor opening

13

ladder

15W

Stop surface of the abutment

15S

Stop surface of the busbar

17

Retaining claw

19

Plug opening in 9

21

Insertion direction of the conductor

23

Legs of the U-shaped abutment

25

flange

27

Angled flange section

29

centering

311

first contact area of 5

312

second contact surface of 5

33

plug cross

35

plug-in opening

37

columnar bending element

37u

lower end of the bending element

37oB

upper bending section of 37

37uB

lower bend section of 37

39

centering

S

pan direction

Claims (17)

1. Supply terminal (1) with an insulation housing (3) in which is arranged a circuit track (5) and at least one friction spring (7), wherein a fixed end (7s) of the friction spring (7) adjoins the circuit track (5) and a flexible end (7f) of said friction spring (7) elastically adjoins an abutment (9) and at least one aperture for the conductor (11) is provided in said insulation housing (3) through which aperture for the conductor (11) a conductor (13) can be inserted between the abutment (9) and the friction spring (7), characterised in that the abutment (9) is affixed to the circuit track (5) and the flexible end (7f) of the friction spring (7) presses a stopping face (15) of the abutment (9) against the circuit track (5).
2. Supply terminal according to Claim 1, characterised in that the friction spring (7) is permanently in contact with the stopping face of the abutment (9) for the purpose of producing a contact pressure (15).
3. Supply terminal according to Claims 1 or 2, characterised in that the friction spring (7) is a coach spring.
4. Supply terminal according one of the claims 1 to 3, characterised in that the friction spring (7) has a U-shape.
5. Supply terminal according to one of the preceding claims, characterised in that the friction spring (7) is affixed with its fixed end (7s) to the circuit track (3).
6. Supply terminal according to one of the preceding claims, characterised in that the circuit track (5) is a stamped part.
7. Supply terminal according to Claim 6, characterised by a flat stamped part.
8. Supply terminal according to one of the preceding claims, characterised in that the circuit track (5) has a retaining claw.
9. Supply terminal according to one of the preceding claims, characterised in that the abutment (9) is a stamped part.
10. Supply terminal according to one of the preceding claims, characterised in that the abutment (9) exhibits an insert opening (19) for the purpose of affixing to the circuit track (5).
11. Supply terminal according to one of the preceding claims, characterised in that the insert opening (19) is formed in a slit-shaped manner for the accommodation of the retaining claw (17) of the circuit track (5).
12. Supply terminal according to one of the preceding claims, characterised in that the abutment (9) exhibits a U-shape in a cross section that is vertical with respect to the inserting direction (21) of the conductor (13), wherein the circuit track (5) is arranged between the limbs (23) of the U-shaped abutment (9).
13. Supply terminal according to Claim 12, characterised in that the limbs (23) of the U-shaped abutment (9) run towards one another in a tapered form.
14. Supply terminal according to Claim 12 or 13, characterised in that the limbs (23) of the U-shaped abutment (9) are formed elastically.
15. Supply terminal according one of the claims 1 to 12, characterised in that a flange (25) of the U-shaped abutment (9) has an angled flange section (27).
16. Supply terminal according to Claim 15, characterised in that the flange section (27) is angled around a right-angle.
17. Supply terminal towards Claim 15 or 16, characterised in that the flange section (27) has a centering recess (29) commencing from the outside.

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