Abstract
A circuit board connecting terminal for connecting electrical conductors to a printed circuit board, having a contact insert that has a contact part and a clamping spring, wherein an electrical conductor inserted into the circuit board connecting terminal can be clamped against the contact part with the clamping spring. The circuit board connecting terminal has a connection element for joining the circuit board connecting terminal. Also, a contact part for a circuit board connecting terminal and a printed circuit board having a circuit board connecting terminal are provided.
Claims
1. A circuit board connecting terminal to connect electrical conductors to a printed circuit board, the circuit board comprising: a contact insert that has a contact part and a clamping spring, wherein an electrical conductor inserted into the circuit board connecting terminal is adapted to be clamped against the contact part with the clamping spring; and a connection element to join the circuit board connecting terminal to the printed circuit board, wherein the contact part has a through opening that is delimited by an opening edge, and wherein the conductor is adapted to be clamped to the opening edge of the through opening via the clamping spring.
2. The circuit board connecting terminal according to claim 1, wherein the opening edge has an edge collar.
3. The circuit board connecting terminal according to claim 2, wherein the edge collar surrounds the through opening in sections or completely.
4. The circuit board connecting terminal according to claim 1, wherein the edge collar is formed as one piece with the contact part.
5. The circuit board connecting terminal according to claim 1, wherein the through opening is produced as a plunged feature.
6. The circuit board connecting terminal according to claim 1, wherein the connection element has a connection to join the connection element to the printed circuit board.
7. The circuit board connecting terminal according to claim 6, wherein the connection is spaced apart from a contact part plane such that the through opening and/or an edge collar of the contact part is spaced apart from the printed circuit board when the circuit board connecting terminal is connected to the printed circuit board via the connection.
8. The circuit board connecting terminal according to claim 6, wherein the connection is spaced apart from contact part plane such that the through opening and/or an edge collar of the contact part lies in the circuit board plane when the circuit board connecting terminal is connected to the printed circuit board via the connection.
9. The circuit board connecting terminal according to claim 8, wherein the contact part is configured for sections of it to project into a recess in the printed circuit board when the circuit board connecting terminal is connected to the printed circuit board via the connection.
10. The circuit board connecting terminal according to claim 6, wherein the connection element transitions into the connection at a free end of the connection element without angling or bending.
11. The circuit board connecting terminal according to claim 6, wherein the connection is bent down or angled from the connection element.
12. The circuit board connecting terminal according to claim 6, wherein the connection is a soldered connection or a plug-in connection.
13. The circuit board connecting terminal according to claim 1, wherein the connection element is formed to be integral with the contact part.
14. The circuit board connecting terminal according to claim 1, wherein the connection element is a contact pin.
15. The circuit board connecting terminal according to claim 1, wherein the connection element is bent down from the contact part.
16. The circuit board connecting terminal according to claim 1, wherein the connection element projects from the contact part in the contact part plane.
17. The circuit board connecting terminal according to claim 2, wherein at least sections of the edge collar of the contact part extend essentially parallel to the connection element.
18. The circuit board connecting terminal according to claim 1, wherein the connection element is bent down or projects from an outer contour of the contact part.
19. The circuit board connecting terminal according to claim 1, wherein the connection element is arranged on a corner region of the contact part or between two corner regions of the contact part.
20. The circuit board connecting terminal according to claim 1, wherein the circuit board connecting terminal has at least two connection elements.
21. The circuit board connecting terminal according to claim 20, wherein the at least two connection elements are arranged on at least two different outer contour sides of the contact part.
22. The circuit board connecting terminal according to claim 21, wherein at least one connection element is provided per outer contour side of the contact part.
23. The circuit board connecting terminal according to claim 20, wherein the at least two connection elements extend essentially parallel to one another.
24. The circuit board connecting terminal according to claim 20, wherein at least one connection element has a greater linear dimension than another connection element of the contact part.
25. The circuit board connecting terminal according to claim 2, wherein the edge collar has at least one radially inward extending contact edge.
26. The circuit board connecting terminal according to claim 25, wherein a clamping edge of a clamping leg of the clamping spring is arranged opposite the contact edge when an electrical conductor is clamped to the edge collar.
27. The circuit board connecting terminal according to claim 2, wherein the edge collar has a lead-in chamfer.
28. The circuit board connecting terminal according to claim 1, wherein the through opening has a quadrilateral passage contour.
29. The circuit board connecting terminal according to claim 28, wherein the passage contour has narrow sides and long sides, wherein the long sides are longer than the narrow sides, and wherein the connection element is arranged on an outer contour side of the contact part that extends essentially parallel to a narrow side of the passage contour.
30. The circuit board connecting terminal according to claim 1, wherein the circuit board connecting terminal has an insulating housing.
31. The circuit board connecting terminal according to claim 30, wherein the insulating housing has a conductor receiving space for the conductor end of a conductor clamped onto the contact part.
32. The circuit board connecting terminal according to claim 30, wherein the insulating housing has a lateral installation opening for insertion of the contact part or contact insert transverse to a conductor insertion direction.
33. The circuit board connecting terminal according to claim 1, further comprising a conductor stop.
34. The circuit board connecting terminal according to claim 1, wherein the circuit board connecting terminal has a conductor insertion passage.
35. The circuit board connecting terminal according to claim 1, wherein the circuit board connecting terminal has an actuating element.
36. A contact part for a circuit board connecting terminal, the contact part comprising: a through opening with an opening edge delimiting the same, onto which edge an electrical conductor is adapted to be clamped via a clamping spring; and a connection element to join the contact part to a printed circuit board.
37. A printed circuit board comprising: a circuit board connecting terminal to connect electrical conductors to the printed circuit board, the circuit board connecting terminal comprising: a contact insert that has a contact part and a clamping spring, wherein an electrical conductor inserted into the circuit board connecting terminal is adapted to be clamped against the contact part with the clamping spring, and wherein the circuit board connecting terminal is joined to the printed circuit board via a connection element; and a through opening formed in the contact part, the through opening being delimited by an opening edge, wherein the conductor is adapted to be clamped to the opening edge of the through opening via the clamping spring.
38. The printed circuit board according to claim 37, wherein the printed circuit board has a recess into which at least sections of the contact part of the circuit board connecting terminal project.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0047] The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:
[0048] FIGS. 1a-1d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0049] FIGS. 2a-2d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0050] FIGS. 3a-3d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0051] FIGS. 4a-4d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0052] FIGS. 5a-5d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0053] FIGS. 6a-6d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0054] FIGS. 7a-7d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0055] FIGS. 8a-8d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0056] FIGS. 9a-9d show a contact part for a circuit board connecting terminal according to an example in a front view, side view, top view, and perspective view;
[0057] FIGS. 10a-10c show three connection variants for connecting a contact part of a circuit board connecting terminal to a printed circuit board in front views; and
[0058] FIGS. 11a-11d show a conductor connection terminal in a sectional front view, a top view, a side view, and a perspective view.
DETAILED DESCRIPTION
[0059] FIGS. 1a to 9d show different example of contact parts 5 for a circuit board connecting terminal 1 shown by way of example in FIGS. 11a to 11d. The circuit board connecting terminal 1 serves to connect an electrical conductor 2 shown in FIG. 11a to a printed circuit board 21 shown by way of example in FIGS. 10a to 10c. The circuit board connecting terminal 1 has a contact insert 4 with a contact part 5 and a clamping spring 6, with which the electrical conductor 2 inserted into the circuit board connecting terminal 1 can be clamped against the contact part 5 in order to produce an electromechanical connection between the conductor 2 and the contact part 5.
[0060] The contact parts 5 have one or more connection elements 7 for joining the circuit board connecting terminal 1 to the printed circuit board 21, depending on the example. The contact parts 5 have a through opening 8 that is designed as a plunged feature in the examples, which is delimited by an opening edge 20 and framed by a surrounding edge collar 9. The conductor 2 can be clamped to the opening edge 20 and the edge collar 9 by means of the clamping spring 6. The edge collar 9 is made as one piece with the contact part 5 and formed from the contact part 5 via the plunging method. In the examples shown, the edge collar 9 has a contact edge 14 and a lead-in chamfer 15. The through opening 8 can have a quadrilateral passage contour 16 with narrow sides 17 and long sides 18 that are longer than the narrow sides 17.
[0061] The connection elements 7 of the contact parts 5 shown in the figures are designed as soldered contact pins and each have a connection 12 designed as a soldered connection for joining the connection elements 7 to the printed circuit board 21. The connection elements 7 are designed to be integral with the contact parts 5 and, depending on the example, project flat from the outer contour 11 of the contact part 5 or are bent down from the outer contour 11 of the contact part 5.
[0062] FIGS. 1a to 1d show a contact part 5 according to an example. The contact part 5 has two connection elements 7, each with a connection 12 that the connection element 7 transitions directly into without further angling or bending. The connection elements 7 are arranged on mutually opposite outer contour sides 19 and are bent down, essentially at right angles, from the contact part 5 whose main extent lies in the contact part plane K. The connection elements 7 are bent down from outer contour sides 19 that extend essentially parallel to narrow sides 17 of the passage contour 16. The two connection elements 7 extend essentially parallel to one another and project from the contact part 5 in the same spatial direction as the edge collar 9. The connection elements 7 are placed essentially centered between two corner regions 13 of the contact part 5. The two connection elements 7 have essentially the same linear dimension L between their free end and the contact part plane K. In the region of the clamping point that is provided on a narrow side 17 of the passage contour 16, the contact part 5 can be well supported on the printed circuit board 21 by the adjacent connection element 7.
[0063] FIGS. 2a to 2d show a contact part 5 according to an example. The contact part 5 has two connection elements 7, each with a connection 12 that the connection element 7 transitions directly into without further angling or bending. The connection elements 7 are arranged on mutually opposite outer contour sides 19 and are bent down, essentially at right angles, from the contact part 5 whose main extent lies in the contact part plane K. The connection elements 7 are bent down from outer contour sides 19 that extend essentially parallel to narrow sides 17 of the passage contour 16. The two connection elements 7 extend essentially parallel to one another and project from the contact part 5 in the same spatial direction as the edge collar 9. The connection elements 7 are placed essentially centered between two corner regions 13 of the contact part 5. The second example differs from the first example shown in FIGS. 1a to 1d in particular in that the two connection elements 7 have different linear dimensions L between their free end and the contact part plane K. In this way, an inclined position of the contact part 5 relative to the printed circuit board 21 is achieved, which can make easier conductor insertion possible.
[0064] FIGS. 3a to 3d show a contact part 5 according to example. The contact part 5 has four connection elements 7, each with a connection 12 that the connection element 7 transitions directly into without further angling or bending. Arranged on two mutually opposite outer contour sides 19 are two connection elements 7 each that are bent down, essentially at right angles, from the contact part 5 whose main extent lies in the contact part plane K. The connection elements 7 are bent down from outer contour sides 19 that extend essentially parallel to long sides 18 of the passage contour 16. The four connection elements 7 extend essentially parallel to one another and project from the contact part 5 in the same spatial direction as the edge collar 9. Two connection elements 7 in each case are placed between two corner regions 13 of the contact part 5. A stabile and secure joining of the circuit board connecting terminal 1 to the printed circuit board 21 is made possible with the contact part 5.
[0065] FIGS. 4a to 4d show a contact part 5 according to an example. The contact part 5 has two connection elements 7, each with a connection 12 that the connection element 7 transitions directly into without further angling or bending. The two connection elements 7 are arranged on two mutually opposite outer contour sides 19 and are bent down, essentially at right angles, from the contact part 5 whose main extent lies in the contact part plane K. The connection elements 7 are bent down from outer contour sides 19 that extend essentially parallel to long sides 18 of the passage contour 16. The two connection elements 7 extend essentially parallel to one another and project from the contact part 5 in the same spatial direction as the edge collar 9. One connection element 7 in each case is placed mainly centered between two corner regions 13 of the contact part 5. Good accessibility of the clamping point that, in the example shown, is present on a narrow side 17 of the passage contour 16 is provided with the contact part 5.
[0066] FIGS. 5a to 5d show a contact part 5 according to an example. The contact part 5 has two connection elements 7, each with a connection 12 that the connection element 7 transitions directly into without further angling or bending. One connection element 7 in each case is arranged on every outer contour side 19 of the contact part 5. The connection elements 7 are bent down essentially at right angles from the contact part 5, whose main extent lies in the contact part plane K. The connection elements 7 extend essentially parallel to one another and project from the contact part 5 in the same spatial direction as the edge collar 9. One connection element 7 in each case is placed mainly centered between two corner regions 13 of the contact part 5. Uniform and stabile joining of the circuit board connecting terminal 1 to the printed circuit board 21 is possible with the contact part 5.
[0067] FIGS. 6a to 6d show a contact part 5 according to an example. The contact part has two connection elements 7, each with a connection 12 that the connection element 7 transitions directly into without further angling or bending. The connection elements 7 are arranged on a common outer contour side 19 of the contact part 5 that extends essentially parallel to a narrow side 17 of the passage contour 16. The connection elements 7 project from the contact part 5 without angling or bending in the contact part plane K. The connection elements 7 extend essentially parallel to one another and project from the contact part 5 in a different spatial direction than the edge collar 9. One connection element 7 in each case originates at a corner region 13 of the contact part 5. With the contact part 5 according to the example, a circuit board connecting terminal 1 can be joined to the printed circuit board 21 in such a manner that a conductor insertion is possible from a different spatial direction than with the first to fifth examples. The conductor insertion can take place essentially parallel to or at small angles to the printed circuit board 21 in this case. Moreover, a very small-profile circuit board connecting terminal 1 can be created.
[0068] FIGS. 7a to 7d show a contact part 5 according to an example. The contact part has a connection element 7 with a connection 12 that the connection element 7 transitions directly into without further angling or bending. The connection element 7 is arranged on an outer contour side 19 of the contact part 5 that extends essentially parallel to a narrow side 17 of the passage contour 16. The connection element 7 projects from the contact part 5 without angling or bending in the contact part plane K. The connection element 7 projects from the contact part 5 in a different spatial direction than the edge collar 9. The connection element 7 is arranged approximately centered between two corner regions 13 of the contact part 5. An even more compact circuit board connecting terminal 1 can be created with the contact part 5 according to the seventh example as compared with the sixth example.
[0069] FIGS. 8a to 8d show a contact part 5 according to an example. The contact part has a connection element 7 with a connection 12 that the connection element 7 transitions directly into without further angling or bending. The connection element 7 is arranged on an outer contour side 19 of the contact part 5 that extends essentially parallel to a narrow side 17 of the passage contour 16. The connection element 7 is bent down from the contact part 5 in relation to the contact part plane K and projects from the contact part 5 at an angle that is greater than approximately 10?. The connection element 7 projects from the contact part 5 in a different spatial direction than the edge collar 9. The connection element 7 is arranged approximately centered between two corner regions 13 of the contact part 5. An inclined position of the contact part 5 relative to the printed circuit board 21, which can make easier conductor insertion possible, can be achieved with the contact part 5.
[0070] FIGS. 9a to 9d show a contact part 5 according to an example. The contact part 5 has two connection elements 7, each with a connection 12 that the connection element 7 transitions into with a bend that is essentially 90?. The connection elements 7 are arranged on mutually opposite outer contour sides 19 and are bent down, essentially at right angles, from the contact part 5 whose main extent lies in the contact part plane K. The connection elements 7 are bent down from outer contour sides 19 that extend essentially parallel to narrow sides 17 of the passage contour 16. The two connection elements 7 extend essentially parallel to one another and project from the contact part 5 in the same spatial direction as the edge collar 9. The connection elements 7 are placed essentially centered between two corner regions 13 of the contact part 5. Improved joining of the conductor connection terminal 1 to the printed circuit board 21 is possible with the angled connections 12 because the connections 12 can rest against a surface on the conductor connection terminal 1. In this way, the circuit board connecting terminal 1 can also be designed as an SMD component. Moreover, a low-profile conductor connection terminal 1 can be created herewith that is also suitable for an arrangement in a recess 22 of the printed circuit board 21 as shown in FIG. 10b or 10c.
[0071] FIGS. 10a to 10c show different options for connecting conductor connection terminals 1 to printed circuit boards 21, wherein only the contact part 5 of the conductor connection terminals 1 is shown in order to promote understanding. Shown in FIG. 10a is the way a contact part 5 according to the example is joined to the surface of a printed circuit board 21 by means of the connections 12. The connections 12 in this case are spaced apart from the contact part plane 5 in such a manner that the through opening 8 and the edge collar 9 of the contact part 5 are spaced apart from the printed circuit board 21. For this purpose, a distance D is present between the connection plane A and the contact part plane K. The contact part 5 is arranged above a circuit board plane P on a top of the printed circuit board 21. Shown in FIG. 10b is that the printed circuit board 21 has a recess 22 into which projects a contact part 5 according to the example. The connections 12 are joined to the printed circuit board 21 on a bottom thereof opposite the top mentioned with regard to FIG. 10a. Here, too, a distance D is present between the connection plane A and the contact part plane K, but it is possible to arrange at least sections of the contact part 5 in the circuit board plane P owing to the recess 22 in the printed circuit board 21. In this way, an extremely low-profile circuit board connecting terminal 1 can be created that scarcely projects beyond the circuit board plane P. A conductor 2 to be connected is therefore connected virtually within the circuit board plane P. In FIG. 10c, the printed circuit board 21 likewise has a recess 22. Joined to the printed circuit board 21 is a contact part 5, in accordance with which the connection elements 7 project from the contact part 5 in the contact part plane K on two mutually opposing outer contour sides 19. The connection elements 7, together with the connections 12 into which the connection elements 7 transition in a flat manner with no angling, serve to join the contact part 5 to the printed circuit board 21 on both sides of the recess 22. The edge collar 9 of the contact part 5 can protrude into the recess 22 in this case, as shown. A very compact circuit board connection solution can be provided in this way, as well.
[0072] FIGS. 11a to 11d show a circuit board connecting terminal 1 having a contact insert 4 that has a contact part 5 and a clamping spring 6 with a clamping leg 10. The contact insert 4 is inserted into an insulating housing 3 that has appropriate receiving and support bays for the contact insert 4. The connection elements 7 extend partially inside, partially outside the insulating housing 3. The connections 12 of the connection elements 7 are arranged to be exposed outside the insulating housing 3 and consequently are easily accessible for a joining of the circuit board connecting terminal 1 to a printed circuit board 21. The insulating housing 3 has an essentially cylindrical conductor insertion passage 27, through which a conductor 2 can be guided in a conductor insertion direction R to the clamping point at the edge collar 9 of the through hole 8 for clamping the conductor 2. The insulating housing 3 has a conductor receiving space 23 for the conductor end 24 of the conductor 2 clamped to the contact part 5. At its floor, the conductor receiving space 23 simultaneously forms a conductor stop 26 for the inserted conductor 2 in order to limit the insertion travel thereof. As can be seen in FIG. 11d, the insulating housing 3 can be designed as two pieces with a base housing as shown in FIG. 11d and with a cover part. Let into the base housing is an installation opening 25, through which lateral installation of the contact insert 4 transverse to the conductor insertion direction R in the insulating housing 3 is possible. For this purpose, the installation opening 25 has an outline that corresponds approximately to the outer contours of the contact insert 4, so that intuitive and reliable installation is possible.
[0073] A compact circuit board connecting terminal 1 with a flat structure and a material-reduced contact part 5 can be made possible with the conductor connection terminal 1 presented and the described contact parts 5. As is shown with the examples, versatile options can now be provided for connecting conductors 2 that can be brought to the through opening 8 of the contact part 5 from different spatial directions. The circuit board connection solution presented is very compatible in design terms with different actuation types, and can be actuated easily with a lever, pushbutton, or separate tool, for example. The opening edge 20 and/or an edge collar 9 of the through hole 8 forms a defined contact region with good current transfer properties. In a connection position, sections of the conductor 2 can project into the through opening 8 so that a reliable clamping of the conductor 2 to the opening edge 20 and/or edge collar 9 is possible.
[0074] The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.
