WO2014124475A2

WO2014124475A2 - Contacting or connecting terminal

Info

Publication number: WO2014124475A2
Application number: PCT/AT2014/000026
Authority: WO
Inventors: Peter Moser
Original assignee: Tridonic Connection Technology Gmbh & Co Kg
Priority date: 2013-02-15
Filing date: 2014-02-06
Publication date: 2014-08-21
Also published as: AT13705U1; EP2956996A2; CN105075022A; CN105075022B; WO2014124475A3; EP2956996B1

Abstract

The invention relates to a contacting or connecting terminal (1) for electrically connecting at least one conductor (26) and at least one electrical contact body - comprising a housing (2) in which the contact body is arranged - wherein the electrical contact body comprises a conductor-clamping connection for the at least one electrical conductor (26) - wherein the electrical contact body has at least one punched part (5) - wherein the punched part (5) has at least one perforation (34) - wherein the punched part (5) has at least one spring element (6) for the conductor-clamping connection, wherein the spring element (6) is arranged at least partially in the perforation (34), - wherein the conductor-clamping connection may be opened by operating the spring element (6).

Description

Connection or connection terminal

The invention relates to a connection or connection terminal for at least one electrical conductor, according to the preamble of claim 1, and a circuit board and a lamp. For applications with light emitting diodes (LEDs) connecting or

Connecting terminals used with preferably a small design.

The connection or connection described in DE 102010014143 A1

Connecting terminal shows a connection or connection terminal with an insulating material and at least one pusher, arranged on the insulating housing. Furthermore, a contact frame with a spring element

provided, wherein an actuation of the pusher acts on the spring element and opens a Leiterklemmanschluss. The pusher arm extends along at least a portion of two surfaces of the insulating material housing arranged at an angle to one another, thereby being sufficient

Opening force can be attached to the spring element in a small way.

The invention is based on the object, a connection or

Connect terminal block so that the connection or

Connecting terminal has a very smaller design, especially with a very low height, with a secure clamping of rigid or flexible conductors with different diameters is guaranteed. It should also allow easy handling during assembly and disassembly of the electrical conductor.

The object is achieved by the features specified in the independent claims. The invention relates to a connection or connection terminal for electrically connecting at least one conductor and at least one electrical

Contact body, with a housing in which the contact body is arranged, wherein the electrical contact body comprises a conductor clamp connection for the at least one electrical conductor, wherein the electrical contact body has at least one stamped part, wherein the stamped part at least one

Breakthrough, wherein the stamped part has at least one spring element for the conductor clamp connection, wherein the spring element is at least partially disposed in the opening, wherein an opening of the conductor clamp connection is made possible by actuation of the spring element.

It has the advantage that a sufficient opening stroke of the

Laderklemmanschlusses can be achieved at a very low height of the connection or connection terminal to introduce or solve an electrical conductor. It is also possible to use different conductors, rigid and / or flexible conductors, with different diameters, preferably from 0.2 mm ² to 0.5 mm ² . The design of the spring element may be essential to determine the opening travel of the conductor clamp connection.

This makes it possible to make the spring leg longer and to achieve better spring properties and better springback.

The actuation of the spring element can preferably be effected by means of a tool, for example with a screwdriver.

It is also advantageous if the stamped part is formed in two pieces. "The carrier part is preferably made of good conductive material, preferably copper and the spring made of spring steel. For this purpose, the stamped part can be locked in the housing, for example. There may be hooks on the contact frame of the stamped part, which are snapped into the housing of the connection or connection terminal. The connection or connection terminal according to the invention can be used for example as a connection or connection terminal for printed circuit boards. Due to its small or low design in height and width, it can be used preferably in LED applications. The connection or connection terminal according to the invention may preferably be a screwless connection or connection terminal.

The invention also relates to a printed circuit board with the connection or connection terminal according to the invention.

The invention also relates to a lamp with the connection or connection terminal according to the invention.

In the following, the invention will be described in more detail with reference to embodiments, which should, however, be considered by way of example only and not by way of limitation.

FIG. 1a shows a perspective view of a connection or connection according to the invention

Connection terminal with a first form of contact surfaces.

Fig. 1 b: another perspective view of a connection or connection terminal according to the invention with a first shape of the contact surfaces.

Fig. 2a: exploded view of another embodiment of the connection or connection terminal according to the invention with a second form of

Contact surfaces .. Fig. 2b: exploded view of another embodiment of the connection or connection terminal according to the invention with a second form of

Contact surfaces.

Fig. 3a: perspective view of a connection or

Connection terminal with a printed circuit board.

3b: another perspective view of a connection or connection terminal according to the invention with a printed circuit board.

4 shows a perspective view and sectional view of the stamped part with a first shape of the contact surfaces.

5 shows another perspective view of the stamped part with a second shape of the contact surfaces.

6 is a perspective view and sectional view of a connection or connection terminal according to the invention on a printed circuit board, wherein the introduction of the electrical conductor in the connection or

Connection terminal is indicated.

Fig. 7: sectional view of a connection or invention

Connecting terminal.

8 shows another sectional view of a connection or

Connecting terminal.

Fig. 9: perspective view of a connection or invention

Connecting terminal and lateral view of the mounting on a printed circuit board.

Fig. 10: further views of the stamped part In Fig. 1a to Fig. 2b shows an embodiment of an inventive

Connection or connection terminal 1 shown, advantageously as a screwless connection or connection terminal. The connection or connection terminal 1 has a housing 2, which is designed as an insulating body. On the housing 2 is at least one

Conductor insertion opening 4 is provided, in this embodiment, two conductor insertion openings 4 are present, for preferably two conductors 26, which are not shown in Fig. 1a and 1b.

Furthermore, the connection or connection terminal 1 at least one

Stamping 5 on.

The stamped part 5 is arranged in the housing 2 and forms the conductor clamp connection for the conductors 26. The stamped part 5 has inter alia a spring element 6, as well as a contact frame 7 and contact areas 8, 9 for electrical

Contacting with a printed circuit board 27.

The contact frame 7 of the stamped part 5 has a transverse embossing 38. This transverse embossing 38 is embodied as an elongate embossing and serves for improved contacting of the conductor 26, in that a defined transition for the contacting of the conductor 26 is created by the shape of the transverse embossing 38.

The spring element 6 has a first leg 61 and a second leg 62. The two legs 61, 62 are connected to each other at a Spangenbogen, hereinafter simply referred to with connection point 63. This will be discussed in more detail with reference to FIGS. 6 and 7. The contact frame 7 is also provided on the stamped part 5 for the conductor clamp connection, so that the conductor 26 between the spring element 6, or its spring leg 61, and the

Contact frame 7 can be held and contacted. The spring element 6, or its spring leg 61, can preferably be actuated with a tool 29, since due to the small size of the connection or connection terminal 1, an operation with hands or fingers of the

Skilled could be perceived as more difficult. The housing 2 may have release holes 33, e.g. here as a passage for the positioning of a

Screwdriver as a tool 29. Corresponding to the release holes 33, the release tabs 64 of the contact frame 7 are arranged such that the tool 29 can be guided by the release hole 33 on the release tab 64 to actuate the spring element 6.

When the tool 29 presses on the release tab 64 and thus on the associated spring leg 61 of the spring element 6, this allows the opening of the spring element 6 for the removal or optionally also for the introduction of the conductor 26 from the connection or connection terminal. 1

The spring element 6 can be manufactured, for example, in one piece with the stamped part 5. Preferably, the spring element 6 and stamped part 5 are manufactured in timely fashion. Upon actuation of the spring leg 61 in the direction of actuation F, this spring leg 61 is pressed in the direction of the spring leg 62 and a

Removal or introduction of the conductor 26 allows.

Furthermore, it can be clearly seen in FIG. 6 that the two spring limbs 61, 62 of the spring element 6 are connected at the connection point 63 via a bend which spans a range of more than 90 °. With reference to FIG. 6, therefore, as seen from the first spring leg 61 in the direction of the connection point 63, a bend of more than 90 ° also referred to below as bending and then a transition into the second spring leg 62nd Die

Spring forces arise both in the two spring legs 61, 62 and at the connection point 63, wherein the advantageous shape of a

Overstretching of the spring element 6 can be avoided. This increases the security of the contact. The connecting element 63 is arranged in the region of the opening 34. Upon actuation of the spring element 6, this can oscillate within the opening 34, that is, if, for example, by the tool 27, a pressure with the actuating force F is exerted on the spring element 6, and the connecting element 63 in the direction of the actuating force F move down It will through the opening 34 a spring travel for the spring element 6 and in particular the connecting element 63 allows. In this way, a very flat structure of the stamped part 5 and the entire connection or

Connection terminal 1 possible.

The underside of the stamped part 5 is slightly pulled up in the region between the contact regions 8 and 9, that is to say the underside of the stamped part 5 has a higher level in the region between the contact regions 8 and 9. This offers the advantage that when contacting the contact areas 8 and 9 by soldering is avoided that solder in the area below the

Breakthrough 34 can get.

The stamped part 5 is arranged in the housing 2 of the connection or connection terminal 1, wherein if the connection or connection terminal 1 has a plurality of conductor leads, preferably several stamped parts 5 are present in the housing 2. The stamped part 5 is provided in a chamber of the housing 2, and is positioned between the housing side walls 19 and / or housing partitions 20. On the stamped part 5, latching hooks 32 can preferably be provided, which are latched into hook holes 3, which are provided in the housing 2, in order to be able to fix the stamped part in the housing, as can be seen in FIG.

Furthermore, the stamped part 5 can have contact regions 8 or 9 at the respective ends, which can respectively rest on a positioning surface 21 in the region of the housing front side 7 or on a positioning surface 22 in the region of the housing rear side 18. The contact areas 8 and 9 can

For example, for electrical contact with a circuit board 27, they can be soldered, for example, on the circuit board 27. The contact areas 8, 9 can, for example, for a SMD assembly

(Contact by SMD soldering, see Fig. 1 a and 1) or a mounting with contacting by wave soldering (see Fig. 2a and Fig. 2b) may be provided. It is preferred that the stamped part 5 is made of a material, wherein the material is conductive.

In Figs. 3a and 3b, the state of the connection or connection terminal 1 is shown prior to assembly on a printed circuit board 27, wherein the conductor 26 has not yet been inserted into the connection or connection terminal 1.

As can be seen in the illustrations, the connection or

Connection terminal 1 are mounted or fixed in the example shown on a printed circuit board 27. On the circuit board 27 LEDs 28 are arranged, which via electrical lines with each other and with the connection or

Connecting terminal 1 or with the stamped part 5 of the connection or

Connecting terminal 1 are connected.

In the illustrated embodiment of Fig. 4, the stamped part 5 a

Spring element 6 on.

The stamped part 5 has at least one opening 34. The spring element 6 is arranged at least partially in the opening 34. The spring leg 61 of the spring element 6 forms the first spring leg of the spring element 6 with a free end which rests in the unactuated state and without a conductor 26 on the contact frame 7 of the stamped part 5 and the

Conductor terminal connection forms. Furthermore, the spring element 6 by its shape connection point 63 and a second spring leg 62. The connection point 63 is then arranged to the second spring leg 62. The second spring leg 62 rests on the underside of the stamped part 5. Both in the unactuated state and without a conductor 26 and in the actuated state and without a conductor 26, the underside of the stamped part 5 supports the second spring leg 62 from. The connection point 63 is located in the region of the opening 34. Upon actuation of the spring element 6 by insertion of the conductor 26 or by actuation by the tool 29, the first spring leg 61 is moved in the direction of the second spring leg 62 by the bending angle of the

Junction 63 increased.

The spring element 6 is designed so that in the unconfirmed state and without a conductor 26 abuts the spring leg 61 on the contact frame 7. The spring legs 61, 62 and the connection point 63 are advantageously designed so that they can ensure a lever force during the actuation of the spring element 6.

The bending radius of the spring element 6, so the bending angle of

Junction 63 and thus the angle of the two spring legs 6, 62 to each other is preferably dimensioned such that the spring element 6 on the inserted conductor 26 exerts a sufficient contact force, so that the conductor 26 is sufficiently fixed in the connection or connection terminal 1. On the other hand, the spring element 6 is fixed in the stamped part 5 by the acting spring force, which acts from the spring element 6 and in particular by the two spring legs 61, 62 on the contact frame 7 and the underside of the stamped part 5, even if the conductor 26 is not inserted. The spring element 6 preferably has a slight bias.

In Fig. 5 is a view of the stamped part 5 is shown. Dor is arranged on the underside of the stamped part a support 35, this may for example be an embossing. This is used in addition to the contact areas 8, 9 for secure stabilization of the connection or connection terminal 1 on the circuit board 27th 6 shows the change of the position of the first spring leg 61 to the surface of the second spring leg 62 when actuated by a tool 29 by way of example. Upon actuation of the spring element 6 by means of the tool 29 in the direction of the actuating force F, the presser travel WDi causes an approximately uniform opening travel of the conductor clamp connection WFi.

The first spring leg 61 was pressed in the direction of the actuating force F until the first spring leg 61 of the spring element 6 at least partially rests on the second spring leg 62 of the spring element 6 of the connection or connection terminal 1, here on the circuit board 27.

The surface of the first spring leg 61 is preferably at this conductor 26 at this conductor 26 inserted. In Fig. 7, the state without actuation of the spring element 6 is shown, wherein the surface of the first spring leg 61 on the contact frame 7 of

Stamped part 5 is present.

The advantage here is that the overall height of the connection or connection terminal 1 can be kept very low and still allow a sufficient opening path for the conductor clamp connection. For applications, especially with LEDs, it is particularly advantageous because a small size is usually required for such products. In addition, the housing 2 offers the advantage that a bevel 37 is made possible at the rear end (in the region of the housing rear side 18), as a result of which the emission angle of the LED 28 is limited as little as possible by the connection or connection terminal 1. The housing 2 preferably has a higher level in the area of the conductor insertion opening 4 than in the remaining (middle) area of the housing 2, and in the rear area, ie in the area of the housing rear side 18, an even lower level than in the remaining area of the housing 2 The construction according to the invention of the stamped part 5 with the spring element 6 makes it possible to realize a bevel 37 for such a connecting or connecting terminal 1. The conductor 26 may be in the conductor insertion opening 4 of the connection or

Connection terminal 1 are inserted and pushed into the Leiterklemmanschluss. It is also advantageous if the maximum opening travel of the conductor clamp connection WF _{max is} greater than the diameter of the conductor 26 to be clamped in. When removing the tool 29, the spring element 6 will clamp the conductor 26 in the conductor clamp connection due to its restoring force.

When disassembling the conductor 26 and the conductor 26 from

Ladder terminal connection to solve, the first spring leg 61 of the

Spring element 6 are pressed by means of the tool 29 in the direction of the actuating force F, even up to the maximum presser travel WD _max , whereby an actuation of the spring element 6 is triggered and an opening of the

Laderklemmanschlusses to the maximum opening path WF _max in turn allows. The conductor 26 can then be removed from the conductor insertion opening 4.

In Fig. 10, the structure and the assembly of the stamped part 5 and the spring element 6 is shown schematically. The spring element 6 can be inserted from the rear side of the stamped part 5 in this until it reaches the opening 34. The spring element 6 is preferably designed so that it is narrower than the two spring legs 61, 62 in the region of the connecting element 63 and thus engages in the region of the opening 34 during insertion into the stamped part 5. Optionally, the spring element 6 via a hole 39 in the second

Federschenkel 62 are connected to the stamped part, for example by also the stamped part 5 has a corresponding locking embossing 40 (as a kind of passage) on the underside, wherein the hole 39 engages in the locking embossment 40 to which the spring element 6 in the Punching part 5 to fix and position. Thus, for example, the hole 39 fit snugly over the locking embossment 40 and thus a positionally accurate connection between the stamped part 5 and the spring element 6 are produced. The stamped part 5 preferably has a lateral housing tab 36. This housing tab 36 is used to assemble the stamped part 5, by this is brought into a U-shape (the stamped part 5 can be made as a flat element and then bent accordingly) and then verclincht in the region of the tab (embossed) is.

In this way, first the stamped part 5 can be manufactured and bent and clinched (embossed), and in a further step, the spring element 6 can be inserted from the rear until the spring element 6 engages in the stamped part 5.

Reference numerals:

1. Connection or connection terminal

2nd case

3. hook opening

4. Ladder entry opening

5. stamped part

6. spring element

7. Contact frame

8. Contact area

9. contact area

10th

11th

12. Actuator

13th channel

14. Contact nub

15th

16. stop surface

17. Housing front

18. Case back

19. Housing side wall

20. housing partition

21. Positioning surface

22. Positioning surface

23. spring leg

24th edition

25th edition

26th conductor

27. Circuit board

28. LED (LED)

29. Tool

30th

31. Housing top

32. latching hook 33. release hole

34th breakthrough

35th edition

36. Housing tab (housing clinched) 37. Bevel

38. transverse embossing

39th hole

40. locking embossment 61 first spring leg

62 second spring leg

63 connecting element

64 Release tab F: Operating force

X: distance

Y: distance

WD: pusher path

WF: Opening path of the conductor clamp connection

Claims

claims

1. Connection or connection terminal (1) for electrical connection

at least one conductor (26) and at least one electrical

Contact body

- With a housing (2) in which the contact body is arranged,

wherein the electrical contact body comprises a conductor clamp connection for the at least one electrical conductor (26),

- wherein the electrical contact body has at least one stamped part (5),

- wherein the stamped part (5) has at least one opening (34),

- Wherein the stamped part (5) at least one spring element (6) for the

Conductor terminal has, wherein the spring element (6) is at least partially disposed in the opening (34).

- By pressing the spring element (6) opening the

Laderklemmanschlusses is possible.

2. connection or connection terminal (1) according to claim 1,

characterized in that

the spring element (6) has two spring legs (61, 62) which are connected via a connecting element (63).

3. connection or connection terminal (1) according to claim 2,

characterized in that

the connecting element (63) is arranged in the region of the opening (34).

4. connection or connection terminal (1) according to claim 1 or 2, characterized in that the bending radius of the spring element (6), is dimensioned such that the distance of the end of the first spring leg (61) in the unactuated state to the second spring leg ( 62) is less than the level of the lead-in area.

5. connection or connection terminal (1) according to one of the preceding claims, characterized in that

the stamped part (5) and the spring element (6) are formed in two pieces and / or that the stamped part (5) is latched in the housing (2).

6. connection or connection terminal (1) according to one of the preceding claims, characterized in that

wherein the stamped part (5) has a locking embossment (40) and the

Spring element (6) has a hole (39) which are accurately connected with each other.

7. connection or connection terminal (1) according to one of the preceding claims, characterized in that

in the region of the housing rear side (18) has a bevel (37) is present.

8. connection or connection terminal (1) according to one of the preceding claims, characterized in that

the housing (2) in the region of the conductor insertion opening (4) has a higher level than in the remaining area of the housing (2).

9. printed circuit board with a connection or connection terminal (1) according to one of the preceding claims.

10. luminaire with a connection or connection terminal (1) according to one of the preceding claims.