DE102017216443B3 - Contact pin and kit - Google Patents

Abstract

The invention relates to a contact pin (1), comprising a plug-in section (12) for mating with a mating plug element (120) and a press-in section (11) for pressing into a printed circuit board (110), wherein the contact pin (1) has two modules (4) fixedly connected to one another. 21, 22) and the press-in section (11) is formed by a first module (21) and the plug-in section (12) is formed by a second module (22), wherein the contact pin (1) comprises a third module (23), having a functional portion (60). The invention further relates to a kit for producing a contact pin (1), comprising at least one first module (21) with a press-in section (11) for pressing into a printed circuit board (110) and a plurality of second modules (22) which can be joined to the first module (21) ) with different plug-in sections (12) for plugging together with a mating plug element (120) and / or at least one second module (22) with a plug-in section (12) for mating with a mating plug element (120) and a plurality of first mating with the second module (22) Modules (21) with various press-in sections (11) for being pressed into a printed circuit board (110), the kit comprising a third module (23) comprising a functional section (60). The solutions given enable a further function on a contact pin.

Description

The invention relates to a contact pin, comprising a plug-in section for mating with a mating plug element, and a press-in section for pressing into a printed circuit board, wherein the contact pin comprises two fixedly interconnected modules and the press-in portion is formed by a first module, and the plug portion of a second module is formed. Furthermore, the invention relates to a kit for producing such a contact pin.

From the prior art, for example, contact pins are known, which are made of wires. These are well suited for mating with a mating connector. The disadvantage of such a configuration, however, is that they must be fixed by soldering to a printed circuit board. This creates a thermal load on the one hand. On the other hand, such a solution is expensive. The object of the invention is to provide a solution that is less expensive and avoids thermal stress.

From the DE 20 2004 017 255 U1 a connector for receiving a number of signal and / or power contacts is disclosed. The signal and / or current contacts to be inserted into the connector are formed in two parts, wherein the signal and / or current contacts are each provided with a contact insert and a Öseneinsatz. The contact insert is formed corresponding to the male connector as a socket or pin. The contact inserts are designed as a rotating part or as a rolling part, while punched parts are provided as Öseneinsätze. The eyelet inserts can be pressed into the material during installation.

According to the invention this is achieved in that the contact pin comprises a third module having a functional portion.

By means of the solution according to the invention, the plug-in section and the press-fit section can each be optimized for their respective function. As a result, for example, can be dispensed with a soldering and assembly thereby be easier. Due to the third module, it is possible that the contact pin fulfills another function.

A kit according to the invention comprises at least a first module with a press-in section for pressing into a printed circuit board and a plurality of second modules which can be joined to the first module with different plug-in sections for mating with a mating plug element and / or at least one second module with a plug-in section for mating with a mating plug element and a plurality with the second module joinable first modules with different press-in sections for pressing in a circuit board.

The solution according to the invention can be further improved by means of the following embodiments, which are each advantageous and which can be combined with one another as desired.

In order to enable a particularly simple coupling to the respective other module, the first module and / or the second module can have coupling sections for coupling to the other module. The coupling sections may, at least partially, be complementary to one another in order to allow a particularly secure coupling.

The coupling sections may have a cross-section which is constant along a coupling direction and / or a constant clear opening or outer shape, in order to facilitate plugging together.

A light cross-section or an outer shape may be approximately circular in order to allow a mating in different rotational positions to each other. If the mating is to be possible in only a certain rotational position, a light cross-section or an outer shape can not be rotationally symmetrical.

A particularly simple contacting is possible if each module forms one end of the contact pin.

Advantageously, the first module may be made of a different material than the second module. After that, an even more accurate adaptation to the respective function may be possible. For example, the press-fit portion may be made of a material having better elastic properties than the plug portion which should be more stable.

A particularly good connection is possible if the first module is plugged into the second module. A reverse embodiment is possible. The coupling sections may in particular be a pin and a socket.

To produce a durable connection, one module, in particular the first module, can be pressed into the other module, in particular the second module.

In order to improve the holding force, the first module may be welded, soldered and / or crimped to the second module. This can especially in addition to pressing or plugging be present.

In an advantageous embodiment, the press-in section may have a spring section. As a result, an elastic press-fitting may be possible. Such spring sections may, for example, already have known configurations, which are known for example as Actionpin, Multispring or Nanospring. In this case, for example, spring elements can be embedded between two arms configured as a needle eye. Such spring sections can be produced for example by embossing.

In a further advantageous embodiment, the plug portion may have a round cross-section. For example, it can be made of a wire, such as by pulling.

The press-in portion may be made of sheet metal, such as punching and stamping.

The plug portion may have a larger cross-section than the press-fit. As a result, the plug-in section can be made more stable than the press-fit section.

In order to allow a particularly space-saving coupling, the second module can be bent. This can be made possible by a plug that is not perpendicular to the PCB. In particular, the second module may be bent by 90 °. As a result, a particularly space-saving parallel plugging is possible in particular.

In an advantageous embodiment, a collar may be formed on the second module. The collar can serve to exert forces, in particular a plug-in force or a press-in force. In particular, the collar can be integral with the second module to allow a particularly simple production. It can be formed for example by a stamping process. Also, shaping by upsetting is possible and may be easier to perform, for example.

The third module can be positively connected or connected to the first or second module in order to attach the third module as needed. In particular, the third module with the first and / or second module can be positively connected or connected to allow a particularly good connection. On the first and on the second module corresponding positive locking elements may be present. Positive locking elements may for example be recesses, such as impressions or protruding elements, such as shoulders.

In particular, two third modules may be present, which together enclose the first and second module. The two third modules can be configured identically in order to ensure easy manufacturability.

The functional portion may include a collar to allow, for example, a gripping.

The collar may have a force introduction surface in order to initiate a insertion force and / or a press-in force particularly efficiently. The force introduction surface may extend perpendicular to a longitudinal direction of the module to prevent lateral slippage.

The collar, the first module / or the second module may at least partially have a non-rotationally symmetrical cross section in order to prevent incorrect orientation when inserting the contact pin into an injection mold and / or during the subsequent encapsulation of the contact pin. For example, a non-rotationally symmetric shape can be easily generated by compression or compression or other mechanical processing.

In an advantageous embodiment, a kit comprises several different third modules with different functional sections. If necessary, then a third module, which is most suitable for the particular purpose, can be used.

In a further advantageous embodiment, a type of a third module may be combined with different first or second modules in a kit.

In a particularly simple embodiment, the plug portion and / or the press-in portion may be arranged at a free end.

In the following, the invention will be explained in more detail by way of example with reference to advantageous embodiments with reference to the drawings. The illustrated advantageous developments and refinements are each independent of each other and can be combined with each other, depending on how this is necessary in the application.

• 1 eine schematische Schnittansicht durch eine erste Ausführungsform eines Kontaktstifts an einem Stecker und einer Leiterplatte;
• 2 eine schematische Perspektivansicht der ersten Ausführungsform eines Kontaktstifts;
• 3 eine Explosionsansicht der Ausführungsform aus 2;
• 4 eine Seitenansicht der Ausführungsform aus 2;
• 5 eine schematische Perspektivansicht einer zweiten Ausführungsform eines Kontaktstifts;
• 6 eine Explosionsansicht der Ausführungsform aus 5;
• 7 eine Seitenansicht der Ausführungsform aus 5;
• 8 eine schematische Seitenansicht einer dritten Ausführungsform eines Kontaktstifts;
• 9 eine Topansicht der Ausführungsform aus 8;
• 10 eine vierte Ausführungsform eines Kontaktstifts;
• 11 eine schematische Schnittansicht weiterer Ausführungsformen eines Kontaktstifts;
• 12 eine teilweise geschnittene Perspektivansicht der Ausführungsform aus 11;
• 13 eine der Ausführungsformen aus 11 in einer Perspektivansicht;
• 14 eine weitere Ansicht der Ausführungsform aus 13.

Show it:

• 1 a schematic sectional view through a first embodiment of a contact pin on a plug and a printed circuit board;
• 2 a schematic perspective view of the first embodiment of a contact pin;
• 3 an exploded view of the embodiment 2 ;
• 4 a side view of the embodiment 2 ;
• 5 a schematic perspective view of a second embodiment of a contact pin;
• 6 an exploded view of the embodiment 5 ;
• 7 a side view of the embodiment 5 ;
• 8th a schematic side view of a third embodiment of a contact pin;
• 9 a top view of the embodiment 8th ;
• 10 a fourth embodiment of a contact pin;
• 11 a schematic sectional view of further embodiments of a contact pin;
• 12 a partially sectioned perspective view of the embodiment of 11 ;
• 13 one of the embodiments 11 in a perspective view;
• 14 another view of the embodiment of 13 ,

In 1 the general principle is shown. A contact pin 1 , a press-fit section 11 for pressing into a circuit board 110 and a plug-in section 12 for mating with a mating plug element shown only schematically 120 includes, is composed of two modules 21 . 22 constructed, wherein the press-in section 11 from a first module 11 and the plug-in section 12 from a second module 22 is formed. The two modules 21 . 22 are originally separate parts, which are now firmly connected and form a unit.

In the 2 to 14 are different embodiments of contact pins 1 shown.

In the 2 and 3 a first embodiment is shown. Like the other embodiments, this embodiment has a spring portion 16 , with which an elastic press-fitting into the circuit board 110 is possible. Such spring sections 16 are already known from the prior art, for example under the name Actionpin, Multispring, Nanospring etc.

The spring section 16 is at the press-fit section 11 that of the first module 21 is formed, arranged. At the first module 21 is also a collar 40 formed, which can be used to the force for pressing into the circuit board 110 initiate. The first module 21 also has a coupling section 31 in the form of a pin 141 , with a coupling section 32 of the second module 22 in the form of a socket 142 interacts. The first coupling section 31 and the second coupling section 32 are designed to be complementary, so that a good fit and a good grip between the two can be achieved.

At the second module 22 are also positive locking elements 62 molded, with positive locking elements 63 of third modules 23 interact. The two third modules 23 serve a collar 40 to provide, with the contact pin in the circuit board 110 or the plug 121 can be pressed. The two third modules 23 are identically constructed and enclose the second module when assembled 22 completely along the circumferential direction.

The coupling sections 31 . 32 have along a longitudinal direction L a constant cross section 130 to facilitate a mating. The pin 31 has a consistent outer shape 131 along the longitudinal direction L on. Also the socket 142 has a consistent clear opening 132 on.

The first module 21 is in the second module 22 inserted and inserted. This can be done under effort, so the two modules 21 . 22 are pressed relative to each other and the first module 21 in the second module 22 is pressed.

To further strengthen the cohesion, the first module 21 with the second module 22 welded, soldered and / or crimped.

The third module 23 includes a functional section 60 , in the present example as a collar 40 is trained. Other functions that may facilitate gripping, for example, are conceivable. The functional section 60 includes in particular a force introduction surface 65 in which an insertion force can be introduced particularly efficiently if this perpendicular to the longitudinal direction L of the contact pin 1 runs.

The plug-in section 12 has a larger cross-section than the press-fit 11 , In the area of the plug-in section 12 therefore larger forces can be applied. The width B2 of the plug-in section 12 is greater than the width B1 of the press-in section 11 , Further, the cross-sectional area 18 in the plug-in section 12 greater than in the press-in section 11 ,

The length LE of an insertion section 52 is about one third of the total length LT of the contact pin 1 ,

The press-fit section 11 has a slightly angular cross-section, as it consists of a sheet metal 71 was formed by punching and embossing. In the area of the coupling section 31 However, it may have been converted by appropriate measures in a round cross-section. In contrast, the plug section 22 a rather round cross-section, as it is made of a wire 72 was formed.

For easy contacting are the press-fit 11 and the plug-in section 12 or the first module 21 and the second module 22 each at a free end 50 arranged the contact pin.

In the 5 to 7 is a second embodiment of a contact pin 1 shown, which does not fall under claim 1, unless a third module 23 with a functional section 60 is available. In the embodiment shown there is on the second module 22 or at the plug-in section 12 a collar 40 formed, which is integral with the second module 22 is. On the collar 40 again forces can be applied, which at a force introduction surface 65 can attack and for pressing into a circuit board 110 or in a plug 121 to be used.

The collar 40 is flattened to two sides in order to prevent incorrect insertion or twisting when inserted into an injection mold and the subsequent encapsulation. Such a flattening 41 For example, by a compression of the collar 40 be generated in a transverse direction.

In the embodiment according to the 8th and 9 is the collar 40 in the longitudinal direction L of the contact pin 1 a bit shorter.

In the embodiment according to the 10 it can be seen that on the first module 21 no collar 40 is formed. Pressing in the press-in section 11 is, for example, by force on a third element 23 , this in 10 not shown, possible, wherein the third element 23 via positive locking elements 62 on the second module 22 and thus at the contact pin 1 is attached.

In the 11 to 14 Further embodiments are shown in which a bend 80 at the contact pin 1 is available. As far as these embodiments are not a third module 23 with a functional section 60 In particular, it is a 90 ° bend, which allows a mating connector 125 parallel to the PCB level 110 with the plug 121 can be put together. A first longitudinal direction L1 thus runs 90 ° to a second longitudinal direction L2 ,

The second module 22 is via positive locking elements 62 in the plug 121 held.

Some of the contact pins shown serve for contacting a printed circuit board, not shown 110 that are below the printed circuit board shown 110 is arranged.

It is advantageous in all embodiments shown that the two modules 11 . 12 and thus the press-fit section 11 and the plug-in section 12 can be made of different materials, each optimized for the purpose. The press-fit section 11 For example, it may be made of a material that is easier to deform and, consequently, smaller structures such as the spring section 16 can be produced. For example, these may be CuNiSi. The plug-in section 12 Again, it can be made of a harder and more stable material, such as CuZn30.

An inventive kit can at least a first or second module 21 . 22 and a plurality of second and first modules, respectively 22 . 21 include. In this case, the modules can each be compatible with one another, ie, for example, their coupling sections 31 . 32 can be connected to each other. With such a kit, any contact pins 1 depending on the specific application.

reference numeral

1

pin

11

press-in

12

plug-in section

16

spring section

17

cross-section

18

Cross sectional area

21

first module

22

second module

23

third module

31

coupling portion

32

coupling portion

40

collar

41

flattening

50

free end

52

insertion

60

function section

61

Form-fitting element

62

Form-fitting element

65

Force introduction surface

71

sheet

72

wire

80

bend

110

circuit board

120

Mating plug element

121

plug

125

Mating connector

130

cross-section

131

outer shape

132

clear opening

141

spigot

142

Rifle

B1

first width

B2

second width

L

longitudinal direction

L1

first longitudinal direction

L2

second longitudinal direction

LE

Length of the insertion section

Claims (14)

Contact pin (1), comprising a plug-in section (12) for mating with a mating plug element (120) and a press-in section (11) for pressing into a printed circuit board (110), wherein the contact pin (1) has two modules (21, 22) fixedly connected to one another and the press - in section (11) is formed by a first module (21) and the plug section (12) is formed by a second module (22), characterized in that the contact pin (1) comprises a third module (23) a functional portion (60). Contact pin (1) to Claim 1 , characterized in that the first module (21) and / or the second module (22) coupling portions (31, 32) for coupling to the other module (20, 21). Contact pin (1) to Claim 1 or 2 , characterized in that the first module (21) is made of a different material than the second module (22). Contact pin (1) after one of Claims 1 to 3 , characterized in that the first module (21) in the second module (22) is inserted. Contact pin (1) after one of Claims 1 to 4 , characterized in that the first module (21) in the second module (22) is pressed. Contact pin (1) after one of Claims 1 to 5 , characterized in that the first module (21) with the second module (22) is welded, soldered and / or crimped. Contact pin (1) after one of Claims 1 to 6 , characterized in that the press-in portion (11) has a spring portion (16). Contact pin (1) after one of Claims 1 to 7 , characterized in that the plug portion (12) has a round cross-section (17). Contact pin (1) after one of Claims 1 to 8th , characterized in that the plug portion (12) has a larger cross-section (17) than the press-fit portion (11). Contact pin (1) after one of Claims 1 to 9 , characterized in that the second module (22) is bent. Contact pin (1) after one of Claims 1 to 10 , characterized in that on the second module (22) a collar (40) is formed. Contact pin (1) after one of Claims 1 to 11 , characterized in that the functional portion (60) comprises a collar (40). Contact pin (1) after one of Claims 1 to 12 , characterized in that the plug-in portion (12) and / or the press-in portion (11) at a free end (50) are arranged. Kit for producing a contact pin (1), comprising at least one first module (21) with a press-in section (11) for pressing into a printed circuit board (110) and a plurality of second modules (22) with different plug sections (22) joinable to the first module (21) 12) for mating with a mating plug element (120) and / or at least one second module (22) with a plug portion (12) for mating with a mating plug element (120) and a plurality of first module (21) joinable with the second module (22) various press-in sections (11) for pressing into a printed circuit board (110), characterized by a third module (23), which comprises a functional section (60).

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