EP3518345A1 - Connector with secondary securing - Google Patents

Abstract

Described and illustrated is a connector, in particular direct connector for contacting contact openings of a printed circuit board, with a contact carrier, which may have coding, in particular coding pins and a reverse polarity, in particular in the form of Polungsvorsprüngen with formed by the contact carrier conductor insertion channels for receiving connecting conductors and with Contact recesses for receiving plug contacts, with a contact carrier on the circuit board holding primary fuse, in particular in the form of locking elements, wherein the contact carrier is provided with a secondary fuse which defines the contact carrier in addition to the primary fuse to the circuit board and is independent of the primary fuse manageable.

Description

The invention relates to a connector, in particular direct connector for contacting contact openings of a printed circuit board, with a contact carrier, which may have coding, in particular coding pins and a reverse polarity, in particular in the form of Polungsvorsprüngen with formed by the contact carrier conductor insertion channels for receiving connecting conductors and contact recesses for receiving plug contacts and with a contact carrier on the circuit board holding primary fuse, in particular in the form of locking elements.

Such connectors, in particular for contacting a connecting conductor to a printed circuit board by means of a plug contact, are well known from the documentally unassignable prior art. As a direct connector is called plug-in devices whose contacts directly contact conductor sections of printed circuit boards. The direct connectors are provided with plug contacts for specially shaped printed circuit boards. For this purpose, the printed circuit boards have openings whose inner peripheral surfaces are provided with an electrically conductive layer. The contact fingers of the plug contacts come directly into contact with this conductive layer of the printed circuit board.

There are generic connectors are known which have a primary fuse to the contact carrier fixed to the circuit board and to protect against inadvertent release of the contact carrier of the circuit board, for example by tensile forces, which are applied by the connecting conductors. The primary fuse also holds the connector firmly against the PCB during vibration. This ensures a secure and permanent contact.

This primary fuse comprises locking elements. These locking elements are arranged on the contact carrier and cooperate with cutouts in the circuit board to arrange the contact carrier to the circuit board firmly. For this purpose engage under latching means, which are formed by the locking elements, the circuit board on the side facing away from the connector underside.

Connectors are subject to constant miniaturization. The requirements for securing the connector to the circuit board remain at least constant.

The object of the invention is to provide a connector whose configuration enables a secure arrangement on the circuit board.

The invention is achieved by a connector with the features of claim 1, in particular with its characterizing features, according to which the contact carrier is provided with a secondary fuse which defines the contact carrier in addition to the primary fuse on the circuit board and is independent of the primary fuse manageable.

The essential advantage of the invention is that the connector has a secondary fuse. This sets the contact carrier in addition to the primary fuse to the circuit board, with no effect dependence between primary and secondary fuse. This makes it possible, in case of failure or loss of a primary fuse continue to set the contact carrier safely on the circuit board.

Above all, the secondary fuse ensures that the connector withstands higher tensile forces than would be possible with the primary fuse alone. The holding forces of primary and secondary fuse add up at least partially.

Equally advantageous is the possibility to provide the secondary fuse only in those cases where additional holding forces to secure the connector to the circuit board are required.

It is initially provided that the secondary fuse is a separately mountable on the contact carrier detent pin.

It is particularly preferred that the detent pin pre-locked in a mounting position on the contact carrier and in a functional position, in which this determines the contact carrier on the circuit board is endverrastet on the circuit board.

Due to the Vorverrastung the locking pin in the contact carrier a possible loss or damage to the locking pin, for example, during transport of the connector, avoided.

Specifically, it is provided that the detent pin is provided with a first detent geometry, which is used for pre-assembly and has a second detent geometry, which cooperates with the circuit board for fixing the contact carrier.

Furthermore, it is provided that the locking pin is movable in a locking position and an unlocking position, wherein the locking pin in the locked position defines the contact carrier on the circuit board and in unlocking the fixing effect of the locking pin is repealed.

Finally, it is provided that the locking pin is rotatably disposed in a contact carrier passing through, plug-in direction parallel bore.

In addition, it is provided that the second detent geometry surrounds the outer circumference of the detent pin only part of the circumference and that the second detent geometry has two diametrically opposite latching projections. If the detent pin is rotatably mounted in the contact carrier, this detent geometry in conjunction with suitable breakthroughs of the printed circuit board makes it possible to release the pre-locking.

It is also conceivable that the locking projections are formed thread-like section. The threaded sections allow for a rotatably mounted detent pin a bracing of the contact carrier and circuit board.

In a particularly preferred embodiment, the locking pin allows a holding force of up to 72 Newton.

The locking pin may have a tool attachment, for example a groove. Thus, the locking pin with a tool, such as a screwdriver, can be rotated in the hole. For this purpose, it is provided that a rotation of 90 ° moves the locking pin from its locking position to its unlocking position.

Fig. 1:

Explosionsdarstellung einer ersten Ausführungsform eines erfindungsgemäßen Steckverbinders mit als Raststift ausgebildeter Sekundärsicherung und Leiterplatte,

Fig. 2a:

Seitenansicht des Raststifts gemäß Fig. 1,

Fig. 2b:

Ausschnittsvergrößerung gemäß Ausschnittskreis IIb in Fig. 2a mit Ansicht der Rastvorsprünge des Raststiftes,

Fig. 3:

Ansicht von oben auf das Kopfteil des Raststiftes gemäß Fig. 2a mit Werkzeugansatz,

Fig. 4:

Ansicht von oben auf eine Leiterplatte,

Fig. 5:

perspektivische Ansicht des Kontaktträgers des Steckverbinders gemäß Fig. 1 von oben,

Fig. 6:

perspektivische Ansicht des Kontaktträgers gemäß Fig. 5 von unten,

Fig. 7:

perspektivische Seitenansicht des Kontaktträgers gemäß Fig. 5,

Fig. 8:

Schnittdarstellung eines ersten Rastarmes einer Primärverriegelung des Steckverbinders gemäß Fig. 1 entlang der Schnittebene XII-XII gemäß Fig. 7,

Fig. 9:

Schnittdarstellung eines zweiten Rastarmes einer Primärverriegelung des Steckverbinders gemäß Fig. 1 entlang der Schnittebene XIV-XIV gemäß Fig. 7,

Fig. 10:

Ansicht des Steckverbinders gemäß Fig. 1 von oben, welcher auf der Leiterplatte gemäß Fig. 4 aufsitzt,

Fig. 11:

Ansicht von unten auf die Leiterplatte gemäß Fig. 4 mit angeordnetem Steckverbinder gemäß Fig. 1 und Raststift in Entriegelstellung,

Fig. 12:

Ansicht des auf der Leiterplatte gemäß Fig. 4 angeordneten Steckverbinders gemäß Fig. 1 mit Raststift in Riegelstellung,

Fig. 13:

Ansicht von unten auf die Leiterplatte gemäß Fig. 4 mit angeordnetem Steckverbinder gemäß Fig. 1 und Raststift in Verriegelungsstellung,

Fig. 14:

perspektivische Ansicht von unten des auf der Leiterplatte angeordneten Steckverbinders gemäß Fig. 1 mit Raststift in Riegelstellung,

Fig. 15:

Explosionsdarstellung einer zweiten Ausführungsform des Steckverbinders,

Fig. 16:

Ansicht des Steckverbinders gemäß Fig. 15 von oben,

Fig. 17:

Schnittdarstellung des Steckverbinders gemäß Fig. 15 entlang der Schnittebene XV-XV gemäß Fig. 16 mit Kontaktträger in Vormontagestellung,

Fig. 18:

Schnittdarstellung des Steckverbinders gemäß Fig. 15 entlang der Schnittebene XVI-XVI gemäß Fig. 16 mit Kontaktträger in Montagestellung.

The invention will now be explained with reference to embodiments, from which further advantages of the invention will become apparent. Show it:

Fig. 1:

Exploded view of a first embodiment of a connector according to the invention with trained as locking pin secondary fuse and circuit board,

Fig. 2a:

Side view of the locking pin according to Fig. 1 .

Fig. 2b:

Section enlargement according to section circle IIb in Fig. 2a with view of the locking projections of the locking pin,

3:

View from above on the head part of the locking pin according to Fig. 2a with tool approach,

4:

Top view on a circuit board,

Fig. 5:

perspective view of the contact carrier of the connector according to Fig. 1 from above,

Fig. 6:

perspective view of the contact carrier according to Fig. 5 from underneath,

Fig. 7:

perspective side view of the contact carrier according to Fig. 5 .

Fig. 8:

Sectional view of a first latching arm of a primary locking of the connector according to Fig. 1 along the cutting plane XII-XII according to Fig. 7 .

Fig. 9:

Sectional view of a second latching arm of a primary locking of the connector according to Fig. 1 along the cutting plane XIV-XIV according to Fig. 7 .

Fig. 10:

View of the connector according to Fig. 1 from above, which on the circuit board according to Fig. 4 seated,

Fig. 11:

View from below on the PCB according to Fig. 4 with arranged connector according to Fig. 1 and locking pin in unlocking position,

Fig. 12:

View of the on the circuit board according to Fig. 4 arranged connector according to Fig. 1 with locking pin in the locked position,

Fig. 13:

View from below on the PCB according to Fig. 4 with arranged connector according to Fig. 1 and locking pin in the locking position,

Fig. 14:

perspective view from below of the arranged on the circuit board connector according to Fig. 1 with locking pin in the locked position,

Fig. 15:

Exploded view of a second embodiment of the connector,

Fig. 16:

View of the connector according to Fig. 15 from above,

Fig. 17:

Sectional view of the connector according to Fig. 15 along the section XV-XV according to Fig. 16 with contact carrier in pre-assembly,

Fig. 18:

Sectional view of the connector according to Fig. 15 along the sectional plane XVI-XVI according to Fig. 16 with contact carrier in mounting position.

In the figures, a connector according to the invention is provided overall with the reference numeral 10.

In the FIGS. 1 to 14 a first embodiment of the connector 10 is disclosed. A second embodiment is in the FIGS. 15 to 18 shown. Identical or equivalent components are named with identical reference numerals and terms. Unless otherwise specified, the comments on an embodiment apply mutatis mutandis to the alternative embodiment.

In the Fig. 1 is shown in addition to the connector 10 with a contact carrier 11 and a secondary fuse 26, a printed circuit board 19.

The connector 10 has the contact carrier 11 which forms a housing 13 for plug contacts 12. The housing 13 of the contact carrier 11 is provided with conductor insertion channels 14, which serve to receive connecting leads, not shown here. These are electrically connected via insulation displacement forks 48 with the plug contacts 12. The plug contacts 12 form the contact fingers 49, which engage under the contact opening 36 of a printed circuit board 19 as soon as the plug connector 10 is arranged on the printed circuit board 19, such as in Fig. 11 shown.

In addition, the housing 13 is provided with contact recesses 15, in which the plug contacts 12 are inserted. The housing 13 carries on its outer surface a plurality of Kodierstifte 16, which project the connector 10 in the insertion direction and the connector 10 on the circuit board 19 with a corresponding coding, in particular in the form of Codierbohrungen 37, assign.

The housing 13 has on its front side 20 snap hooks 21, by means of which a plurality of connectors 10 can be arranged for confectioning purposes together. On the back 22 of the contact carrier 11, the housing 13 forms contours for receiving 23 of latching hooks 21, by means of which more connectors 10 can be arranged on the contact carrier 11.

Furthermore, the contact carrier 11 is equipped with a reverse polarity fuse 18. The polarity reversal fuse 18 is intended to prevent a short-circuiting contacting of the plug contacts 12 with the contact openings 36 of the printed circuit board 19. The reverse polarity fuse 18 is from three of the underside of the contact carrier 11 springing Polungsvorsprüngen 56 formed, such as in Fig. 6 shown. In this case, two of the polarity projections 56 are formed on the contact carrier 11 with respect to the paper plane right, whereas only one Polungsvorspung 56 is formed on the left with respect to the paper plane.

The housing 13 of the contact carrier 11 is plug-in direction parallel with a bore 24 passes. This bore 24 has a first notch 25A and a second notch 25B. The second notch 25B is an optional and non-mandatory feature of the bore 24.

The bore 24 serves to receive the secondary fuse 26, in particular in the form of a latching pin 27. The latching pin 27 has a head portion 28 and a pin-like base body 29.

The Fig. 2a shows the locking pin 27 in side view. The outer circumference of the pin-like base body 29 of the locking pin 27 is partially surrounded by mounting load projections 47 and locking latch projections 33. The mounting loader protrusions 47 is used for pre-assembly of the locking pin 27 on the contact carrier 11. The locking latch projections 33 engage under the circuit board 19 and hold the connector 10 to the circuit board 19th

The locking latch projections 33, which increases in Fig. 2b are shown are threaded portion-like and serve the bracing of the contact carrier 11 on the circuit board 19. At the same time the thread pitch also allows compensation of board tolerances.

The pin-like base body 29 of the locking pin 27 has a slot 41 which is bounded by a first side wall 40A and a second side wall 40B. The slit 41 permits a diameter-reducing backward displacement of the side walls 40A and 40B supporting the latch detent projections 33.

In the head region 28, the rib 31 is shown. This cooperates with the first or the second notch 25A, 25B of the bore 24 (see Fig. 1 . Fig. 5 ). Depending on the locking position of the latching pin 27, this rib 31 cooperates with the first or second notch 25A, 25B and thus holds the latching pin 27 or its latching latching projections 33 in the latching or unlocking position of the secondary safety device 26.

The rib 31 and the head portion 28 of the locking pin 27 are in the Fig. 3 shown. The head portion 28 forms a groove 30A, which serves to receive a tool, not shown here, and thus displaces the locking pin 27 in the locking or unlocking position. In the groove 30A, for example, a screwdriver can be introduced, by means of which the locking pin 27 can rotate in the bore 24 by 90 °.

The Fig. 4 shows the circuit board 19 from above. The printed circuit board 19 forms the contact openings 36 for receiving the plug contacts 12 of the contact carrier 11. Furthermore, the circuit board 19 has a formed in the middle of the circuit board 19 opening 39 with a keyhole-like contour. This contour is subdivided into a stalk section 58 and a beard section 38. The stalk section 58 serves to receive the pin-like basic body 29 of the detent pin 27. The beard section 38 serves to receive a coding pin 16 of the contact carrier 11. Adjacent to this beard section 38 are two coding holes 37 in FIG the printed circuit board 19 is formed, which serve to receive the remaining coding pins 16 of the contact carrier 11.

Adjacent to the opening 39, the printed circuit board 19 has a first and a second slot 35A, 35B. These elongated holes 35A and 35B have portions which cooperate on the one hand with a primary fuse 17 and on the other hand with the polarity projections 56 of the polarity reversal fuse 18. The slot 35A cooperates on the one hand with the primary fuse 17 and with a Polungsvorsprung 56. The slot 35B cooperates with the primary fuse 17 and with two polarity projections 56 and is accordingly made longer than the slot 35A. An incorrect positioning of the connector 10 on the circuit board 19 is thus excluded.

The primary fuse 17 is for example in the Fig. 5 to 7 represented and serves the arrangement of the contact carrier 11 on the circuit board 19. The primary fuse 17 is formed by two Rastarmpaaren. Each pair of latching arms has a first latching arm 44 and a second latching arm 45. The latching arms 44, 45 each originate from a latching arm root 52 which is remote from the free end and which is arranged on the contact carrier 11. The latching arms 44, 45 each have a release cam 53, which serve the return displacement of the latching arms 44, 45 in a release position to disconnect the connector 10 of printed circuit board 19, if a corresponding pressure is applied here, the release cam an optional and thus no mandatory feature of the locking arms 44, 45 are.

The latching arms 44, 45 have at their free end latching members 50 and 51, which have different locking surfaces 54 and 55.

In the Fig. 8 the first locking member 50 of the second locking arm 45 is shown. The first latching element 50 of the second latching arm 45 forms a latching surface 54 which engages under the printed circuit board 19. This latching surface 54 is aligned substantially orthogonal to the insertion direction of the connector, that is approximately parallel to the bottom 46 of the circuit board 19, as shown for example in the Fig. 11 and 13 can be seen. The connector 10 is thus secured against a tensile force that can be applied, for example, by the connection conductors, not shown, secured. The latching surface 54 of the first latching member 50 allows a holding force of up to 60 Newtons.

In the Fig. 9 the second locking member 51 of the locking arm 44 is shown. The second latching member 51 of the latching arm 44 has a latching surface 55, which is formed sloping starting from the first latching arm 44 in the insertion direction.

The latching surface 55 serves to compensate for tolerances between the contact carrier 11 and the circuit board 19. The arranged on the circuit board 19 locking arms 44 are for example in the Fig. 11 and 13 shown. Printed circuit boards 19 with minimum thickness fully engages below the sloping latching surface 55, so that the surface origin located near the first latching arm 44 provides the plug connector 10 with support on the printed circuit board 19 in addition to the latching surface 54. Circuit boards 19 with a maximum strength engages below the sloping locking surface 55 only with its end facing away from the origin, which provides the connector 10 complementary to the locking surface 54 hold. Depending on the intermediate strength of the circuit board 19 is a Teiluntergreifen the locking surface 55 instead.

In a particularly preferred embodiment, the sloping locking surface 55 with the bottom 46 of the circuit board 19 forms an angle of 20 ° and thus allows a tolerance compensation of up to 10% of the nominal thickness of the circuit board 19. The sloping locking surface 55 contributes to the anchoring of the connector 10th at the circuit board 19 at. However, the tensile load that can be compensated by them is low due to the sloping locking surface 55.

The latching arms 44, 45 rush to the contact carrier 11 and are arranged parallel to each other. The connector 10 has two Rastarmpaaren which are arranged on opposite sides of the connector 10. The locking members 50 and 51 of the same locking geometry are opposite each other diagonally on the contact carrier 11. The example of Figure 11 can be seen that the locking member 51 of the left with respect to the paper plane Rastarmpaares front, the locking member 50, however Rear is arranged. By contrast, the right-hand pair of latching arms with respect to the plane of the paper has a front latching element 50, whereas the latching element 51 is located at the rear. In this way, the aforementioned diagonality is ensured.

By the diagonally opposite locking members 50 and 51 of the same configuration with their locking surfaces 54 and 55, the tilting of the connector 19 is prevented under tensile load and thus the contact point load between the plug contacts 12 and the contact holes 36 evened.

In the Figures 10 and 11 the secondary fuse 26 is mounted in unlocking position and in top view ( Fig. 10 ) and from below ( Fig. 11 ). The unlocking position is indicated here by the groove 30A pointing to the word "release". Another form of optical display is possible. In the unlocking position, the rib 31 of the head region 28 of the latching pin 27 cooperates with the first notch 25A associated with the term "release". In this position, the rib 31 and the first notch 25A hold the detent pin 27 in the unlocked position. An independent turning of the locking pin 27 or by vibration is not possible. The secondary fuse 26 is merely mounted in the blade section 58 of the opening 39 in such a way that the locking latch projections 33 of the latching pin 27 do not engage under the printed circuit board 19.

In the FIGS. 12 to 14 the locking pin 27 is displaced in the locked position. The rotatably mounted locking pin 27 allows the contact carrier 11 to be clamped to the circuit board 19 by the locking pin 27 is rotated at mounted on the circuit board 19 connector 10 from the unlocking into the locked position. The locking pin 27 is mounted in the locking position so in the stalk area 58 of the opening 39 that the locking latch projections 33 of the locking pin 27, the circuit board 19th engage under and clamp the contact carrier 11 with the circuit board 19 by the threaded portion-like configuration of the locking latch projections 33.

Alternatively, the locking pin 27 may already be in the locked position when placed on the printed circuit board 19. Then the locking latch projections 33 run on the edge of the opening 39. The vertically arranged in the locking pin 27 slot 41 allows for the continuation of the detent pin 27 is a resilient rearward displacement of the locking latch projections 33 of the detent pin 27 so that they dive through the opening 39 through and so engage the circuit board 19.

In the locking position of the locking pin 27, the rib 31 of the head portion 28 of the locking pin 27 now cooperates with the second notch 25 B of the bore 24. The locking position is marked with the word "lock". The groove 30A points to the word "lock". The connector 10 is securely mounted on the circuit board 19.

In the FIGS. 15 to 18 a second embodiment of the connector 10 is disclosed. In addition to the designated components of the connector 10 of the first embodiment, this connector 10 has a securing hood 60.

In the Fig. 15 is shown in addition to the stretch connector 10 with contact carrier 11 and fuse cover 60, the circuit board 19.

The securing hood 60 surrounds the contact carrier 11 on the outside, the contact carrier 11 being movably arranged in the securing hood 60. The contact carrier 11 has plug-in direction parallel locking pin 61, which lead the contact carrier 11 and position it in the safety cap 60 in the pre-assembly.

In addition, the contact carrier 11 forms latching profiles 63 and locking grooves 66, which lead the contact carrier 11 in the insertion direction and cooperate according to the pre- or assembly position of the contact carrier 11 in the safety cap 60 with locking webs 65 of the safety cover 60.

Furthermore, the contact carrier 11 has latching tabs 62 which originate from the housing 13 on the respective short sides of the contact carrier 11. The locking tabs 62 are formed resiliently and cooperate with detent openings 64 which are formed by the securing hood 60, as shown in FIG Fig. 16 is shown. Through the cooperation of latching tabs 62 and latching openings 64, the contact carrier 11 is latched to the securing hood 60. By pressure, the locking tabs 62 can be shifted back so that the contact carrier 11 can be released from the safety cap 60.

In addition, the latching tab 62 forms a latching nose 67 which cooperates with a corresponding latching recess 68, which is formed by the securing hood 60. As soon as the contact carrier 11 is moved into the assembly position, the latching nose 67 cooperates with the latching recess 68, as in the sectional illustration in FIG Fig. 17 shown. The latching nose 67 dives through the recess 68 and thus secures the contact carrier 11 in addition in the safety hood 60. By shifting back the locking tabs 62 and the locking lugs 67 are rearranged so that the contact carrier 11 can be solved by the safety hood 60.

In contrast to the first embodiment of the connector 10, the primary fuse 17, the reverse polarity assurance 18 and the coding pins 16 of the fuse cover 60 do not originate from the contact carrier 11. The primary fuse 17 has in this second embodiment of the connector 10 on both sides identical Rastarmpaare 44, which with the locking members 51 are formed. The locking members have the locking surface 55, which serve the tolerance compensation between contact carrier 11 and the circuit board 19.

However, it is also conceivable that the primary fuse 17 is configured identically to the first embodiment of the connector 10, such as in Fig. 5 shown.

The reverse polarity fuse 18 may be configured according to the first embodiment of the connector 10, as exemplified by Fig. 6 can be seen.

For assembly of the connector 10 to the circuit board 19, the contact fingers 49 of the plug contacts 12 must be received in the contact openings 36 of the circuit board 19 to produce an electrical contact.

The contact carrier 11 is positioned by means of locking pins 61 in the securing hood 60, wherein the locking grooves 66 of the contact carrier 11 in the pre-assembly position cooperate with the locking webs 65 of the securing hood 60. The plug contacts 12 are inserted into the contact recesses 15 of the contact carrier 11. Since the contact carrier 11 and accordingly also the plug contacts 12 are present in the pre-assembly spaced from the circuit board 19, an electrical contact of the connector 10 with the circuit board 19 in the pre-assembly position of the connector 10 is excluded.

In order to finish the connector 10 ready, the contact carrier 11 is moved in the insertion direction and thus displaced in the mounting position. The latching webs 66 now engage in the latching profiles 63 of the contact carrier 11 and thus arrange the contact carrier 11 in the safety hood 60. In addition, the locking tabs 62 snap to the Locking openings 64 of the safety cover 60 fixed. With the displacement of the contact carrier 11 in the insertion direction, the plug contacts 12 are displaced in the insertion direction in addition to the coding pins 16, which penetrate the coding holes 37 of the circuit board 19. As a result, the contact fingers 49 of the plug contacts 12 cooperate with the contact openings 36 in the printed circuit board 19 and thus enable the electrical contact.

The Fig. 17 shows the connector 10 located in the pre-assembly position on the printed circuit board 19th

In the Fig. 17 the fuse cover 60 of the circuit board 19 is arranged. The locking surfaces 55 of the locking arms 44 engage under the circuit board 19 and put the fuse cover 60 on the circuit board 19.

The contact carrier 11 is arranged in the safety hood 60 in the pre-assembly position. The locking pins 61 of the contact carrier 11 are seated in an upper region A above the latching arms 44. Thus, the space required for a releasable rearward displacement of the latching arms is free. The latching arms 44 can be moved back into the movement space by means of pressure on the release cam 53, and thus the securing hood 60 can be easily detached from the printed circuit board 19.

Will the contact carrier 11, as in Fig. 18 shown displaced in the securing hood 60 in the assembled position, the locking pins 61 are moved in the direction of insertion and penetrate into the aforementioned movement space and block the releasing back displacement of the locking arms 44. Due to the blocking, it is now impossible, the connector 10 of the circuit board 19 to to solve. A secure and permanent contact is guaranteed.

LIST OF REFERENCE NUMBERS

10

Connectors

11

contact support

12

plug contact

13

casing

14

Head insertion channel

15

contact recess

16

Polarizing

17

primary fuse

18

Verpolungssicherung

19

circuit board

20

front

21

latch hook

22

back

23

Contours for recording 21

24

drilling

25A

first notch

25B

second notch

26

Secondary fuse

27

Plunger

28

head area

29

body

30

tool attachment

30A

groove

31

rib

33

Bolt locking projections

35A

first slot

35B

second slot

36

contact openings

37

Kodierbohrung

38

Bart section

39

breakthrough

40A

first sidewall of 29

40B

second side wall of 29

41

slot

42A

Page A of 24

42B

Page B of 24

44

first stop arm

45

second latching arm

46

Bottom of 19

47

Mounting catch projections

48

IDC fork

49

contact fingers

50

first catch member

51

second catch member

52

Rastarmwurzel

53

release cam

54

first catch surface

55

second locking surface

56

Polungsvorsprung

58

stem portion

60

fuse cap

61

locking pin

62

Rest case

63

catch profile

64

latching opening

65

latching web

66

locking grooves

67

locking lug

68

recess

A

Upper portion of the latching arms 44th

IIb

cutout circle

Claims (10)

Connector (10), in particular direct plug connector for contacting contact openings (36) of a printed circuit board (19), - With a contact carrier (11), which on coding means, in particular coding pins (16) and a reverse polarity fuse (18), in particular in the form of Polungsvorsprüngen (56) may have, - with the contact carrier (11) formed conductor insertion channels (14) for receiving connecting conductors and with contact recesses (15) for receiving plug contacts (12), - With a contact carrier (11) on the circuit board (19) holding the primary fuse (17), in particular in the form of locking elements, characterized in that the contact carrier (11) is provided with a secondary fuse (26) which defines the contact carrier (11) in addition to the primary fuse (17) on the printed circuit board (19) and independent of the primary fuse (17) is manageable. Connector (10) according to claim 1, characterized in that the secondary fuse (26) is a separately on the contact carrier (11) mountable latching pin (27). Connector (10) according to claim 2, characterized in that the latching pin (27) in a mounting position on the contact carrier (11) pre-locked and in a contact carrier (11) on the circuit board (19) defining the functional position on the circuit board (19) is endverrastet , Connector (10) according to claim 3, characterized in that the detent pin (27) is provided with a first detent geometry, which serves the pre-assembly and has a second detent geometry, which cooperates with the circuit board (19) for fixing the contact carrier (11) , Connector (10) according to one of claims 2 to 4, characterized in that the latching pin (27) is movable in a latch position and an unlocking position, wherein the latching pin (27) in the latch position the contact carrier (11) on the circuit board (19). determines and in unlocking the fixing effect of the locking pin (27) is canceled. Connector (10) according to any one of claims 2 to 5, characterized in that the locking pin (27) in a contact carrier (11) passing through, plug-in direction parallel bore (24) is rotatably arranged. Connector (10) according to claim 4 and 6, characterized in that the second detent geometry surrounds the outer periphery of the locking pin (27) only partially. Connector (10) according to claim 7, characterized in that the second latching geometry has two diametrically opposite locking latching projections (33). Connector (10) according to claim 5, 6 and 7, characterized in that a rotation by 90 °, the locking pin (27) moves from its locking position to its unlocked position. Connector (10) according to claim 8, characterized in that the locking latch projections (33) form threaded portions.

Images