DE202008000888U1 - plug - Google Patents

Abstract

Plug with a contact receiving holes (4) for receiving electrical contacts (5) having contact cap (2) and a contact holder (3) for fixing the contacts (5) in the contact cap (2), wherein the contact holder (3) on the contact cap (2 ) and apertures (17) for passing connecting cables (15) to the contacts (5), characterized in that in the assembled state of the contact cap (2) and contact holder (3) between a contact in a contact receiving hole (4) recorded contact (5) and the contact holder (3) an elastic element (13, 27) is received with a passage for the connecting cable (15).

Description

The The invention relates to a plug with a particular more, eg. 24, contact receiving holes for receiving electrical contacts having contact attachment and a contact holder for fixing the contacts in the contact cap, wherein the contact holder on the Contact attachment is fixable and openings for the Make connection cables to the contacts. As a plug in the context of the present application is generally a Plug-in part of a plug connection for producing an electrical To understand the connection, put together with the corresponding opposite can be. In particular, it also includes a contact insert for Insert into a socket or a plug. The inventive Plug is in particular a plug for producing electrical Connections in the automotive field, for example. For electrical Connecting a trailer to a towing vehicle.

Such a plug in the form of a recorded in a socket contact carrier insert is from the EP 0 327 701 B1 Known in which a contact attachment and a contact carrier to form a contact carrier insert while fixing recorded in the contact attachment contacts are latched together. In order to equip the contact carrier insert with contacts, the contact carrier is pre-latched to the contact attachment in a mounting position by means of a latching or plug connection, wherein in this mounting position, the contacts can be pushed through the contact carrier until locking tongues of the contact carrier engage in a recess of the contact and this hold on to the contact carrier. Only when the contact is held in the manner provided on the contact carrier, the contact carrier and the contact attachment can be converted by final latching in their use state in which engage the locking tongues in recesses of the contact cap, whereby a radial deflection of the locking tongues is avoided. In this state, the contact is therefore secured in the contact carrier insert. In this connector, however, there is the problem that, in particular, the foot portion of the contact is not secured against ingress of moisture when the contact carrier insert, for example, is not inserted into a socket, but is used as a free plug in the outer area of the vehicle.

task The present invention is therefore a plug of the above provided, in which the foot portion of a contact easy can be sealed.

These Task is in a connector in particular with the features of Claim 1 solved. It is envisaged that in the assembled state of contact attachment and contact holder between one in a contact receiving hole recorded contact and the contact holder an elastic element taken up with a passage for the connection cable is. This is preferably for each contact pickup hole, in which a contact is provided or selected contact receiving holes. By the invention, elastic element may be the foot portion of the contact and / or the contact receiving hole Simply be easily sealed against ingress of moisture. Further, the received in the contact receiving hole contact by the elastic element in particular in the axial direction a certain agility on which the findability of the plug improved.

According to one preferred embodiment of the invention is the elastic Element therefore designed as a seal, which preferably the rearward, the contact holder facing opening the contact receiving hole that passed through the seal Connecting cable and / or the foot portion of the contact seals against ingress of moisture. The foot section the contact is as the trained as a pin or socket Contact section defines opposite end of the contact.

to Sealing of the contact receiving hole may be the elastic element one or more abutting on the wall of the contact receiving hole sealing lips exhibit. To seal the connection cable can in the passage be formed for the connecting cable a corrugated sealing area, which forms a sealing surface with the insulation of the cable and therefore the entry of moisture into the foot section of the contact can prevent. At the same time, the corrugated sealing area form a holding function for the cable by the corrugated area firmly presses on the performed connection cable. To reinforce the holding function in the sense of a strain relief Can also make one of the corrugated structure of the sealing area around the cable be formed corresponding holder. For sealing the foot section of the contact itself, the elastic element can be attached to the foot section have contact surface abutting the contact surface, in particular, an axially formed in the foot section Connection opening for inserting the contact area of Connecting cable encloses. With such an elastic Element with one or preferably all three described sealing effects therefore the entry of moisture into the electrical connection area the contacts of the plug can be reliably prevented.

According to a further development of the present invention, the elastic element in the particular slightly longer than the distance remaining between the contact and the contact holder in the assembled state of the contact cap and contact holder, so that the elastic element is compressed by the contact and the contact holder in the assembled state of the contact cap and contact holder. As a result, the elastic member, which may be made of a rubber material in particular, is slightly deformed to generate a sufficient contact pressure for the sealing effect and to better fix the connection cable in the elastic member due to the deformation of the passage for the connection cable. If the cable is additionally set in the contact foot, for example, by crimping, screwing or the like, the compressed elastic element simultaneously acts as a strain relief due to the fixation of the connecting cable achieved in this way.

Around to simplify the assembly and contacting of the plugs, can the contact holder and the contact attachment according to the invention in a different state of assembly of the assembly state to each other be fixed, preferably in the assembled state, a greater distance between a contact received in a contact pickup hole and the contact holder is as in the mounting state.

there is the invention provided elastic Element preferably slightly shorter than that between the contact and the contact holder in the assembled state of Contact attachment and contact holder remaining distance, so that the elastic element in the assembled state in an uncompressed Condition is in which a cable is still through the elastic element push through into a connection opening of the contact leaves. Optionally, has a contact terminal of the connection cable also adapted to the corrugated sealing area in the mold Wavy area in the assembled state in the corrugated sealing area of the elastic element is located and through the compressed elastic element is fixed there. Especially if the elastic element, as according to a preferred embodiment of the invention can be provided after picking up the contact in the contact receiving hole as well inserted into this, for example, sealing tabs of the elastic member pre-fix the elastic member in the contact receiving hole and hold the contact in such a way that it is without external Force application does not slip out of the contact receiving hole. This simplifies the assembly considerably, as the contacts in this way already prefixed in the contact attachment, wherein the contact holder in its mounting position also on the contact attachment can be fixed. The electrical connection can then easily through Insert the connection cable with its respective contact connection in the openings of the contact holder through the passage for the connection cable in the elastic element through to a Contact or connection opening of the contact pushed through become. Then the connection cable can be fixed by setting the contact holder on the contact cap in the assembled state final be determined.

Especially around the elastic element in the compression of contact attachment and deform contact holders in a defined manner Provided around the openings of the contact holder around retaining tongues which are in the assembled state of contact attachment and contact holder protrude into the contact receiving holes and the elastic Press the element against the contact foot. Thus, a high sealing effect on the contact foot and / or a reliable fixation of the connection cable in the achieved elastic element.

According to a particularly preferred embodiment of the plug according to the invention, the contact attachment and the contact holder locking and / or insertion means for fixing the two parts together. Since a latching can withstand significantly stronger release forces than, for example, a pre-latching caused only by a plug-in, latching means are provided according to the invention, in particular for the assembly state. For the type of Vorverrastung performing mounting state both locking and plug means can come into question. The catch or plug means can, for example, as in the EP 0 327 701 B1 be described described.

In In a particularly preferred embodiment, the Locking means on the edge of the contact holder or contact attachment arranged locking tabs with an inner profiling, which with an external profiling on the outer periphery of the contact cap or contact holder detent interacts. Especially easy then achieve the locking connection with a low installation depth, when the locking tabs with an internal profiling on the contact holder and the outer profiling formed on the contact cap are, since then the contact holder formed comparatively thin can be and in the overall height of the plug respectively Contact insert does not apply strong.

The inner profiling and / or the outer profiling can each have two spaced-apart ribs in the latching direction. By such an arrangement, complete locking can be achieved both in the assembled state and in the assembled state. By a rib in the inner profiling and the external profiling The assembly state and the mounting state can also be implemented in a suitable manner. In this case, a complete latching takes place only in the assembly state between contact attachment and contact holder. By contrast, in the mounting state forming a type of pre-latching, the ribs of the inner profiling and of the outer profiling abut against one another, whereby a clamping effecting the pre-locking is achieved by a certain elastic deflection of the locking straps at a defined position.

According to one further, even independent aspect of the present invention it is further provided that the contact receiving holes in the contact attachment are formed differently deep or Contact sections of the contacts in the plug in the plug-in direction in are arranged at different heights. This leaves reduce the force required in the manufacture of the connector according to the invention, typically in the assembly of a connector at the meeting of the opposite electrical Contacts a force proportional to the holding force can be expended got to. With a multipolar plug, the expended adds Force according to the number of provided contacts, which merged simultaneously become. By forming different contact heights for the various contacts becomes the force to be expended when plugging the plug on the different times distributed in which the respective contacts in their contact height meet. This concept according to the invention can both by a different high arrangement of pin sections of the Contacts as well as by a different height arrangement of Socket portions of the contacts in the axial direction of insertion of the Contacts take place.

Further Advantages, features and applications of the present Invention will become apparent from the following description of a Embodiment and the drawing. All form described and / or illustrated features for itself or in any combination the subject matter of the present Invention, also independent of its summary in the claims or their remittances.

It demonstrate:

1 a three-dimensional view of a plug according to the invention in the assembled state;

2 a longitudinal section through the plug according to 1 ;

3 an enlarged detail 2 ;

4 a longitudinal section through the plug according to 1 in assembly condition;

5 a detail according to 4 and

6 a second embodiment of a connector according to the invention with elastic element in a detail section.

The in 1 illustrated connector 1 has a contact attachment 2 and a contact holder 3 which can be fixed to each other.

In the contact article 2 are contact receiving holes 4 formed, in which electrical contacts 5 are plugged in with their contact section 6 each from the contact receiving hole 4 and the contact attachment 2 protrude. On the contact section 6 opposite side of the contact attachment 2 is the contact holder 3 for fixing the contacts 5 in the contact receiving holes 4 provided by the contact holder 3 the contact receiving holes 4 at least partially closes.

The contact holder 3 has at opposite side edges in each case a locking tab 7 with an internal profiling 8th on that with an exterior profiling 9 on the outer circumference of the contact attachment 2 cooperates such that the contact attachment 2 and the contact holder 3 can be fixed to each other in an assembled state and an assembling state. In 1 the mounting state is shown, in which the contact holder 3 from the contact attachment 2 still with a gap 10 is spaced.

The detailed structure of the connector according to the invention is described below with reference to 2 and 3 described.

The contact receiving holes 4 in the contact article 2 have at their upper in the representation, the contact section 6 the contacts 5 associated end of a shoulder 11 on, on which the foot section 12 of contact 5 abuts and the displacement path of the contact 5 in the contact receiving hole 4 limited.

After inserting the contact 5 in the contact receiving hole 4 is an elastic element 13 in the contact receiving hole 4 plugged in, which the contact 5 already in the contact receiving hole 4 holds and a passage 14 for a only in 6 in connection with a weitren embodiment illustrated connection cable 15 having. The passage 14 is axial with a connection opening 16 in the foot section 12 of contact 5 aligned so that the connection cable 15 through the passage 14 in the elastic element 13 through into the connection opening 16 of contact 5 can be inserted.

In particular 2 can be seen, the arrangement of the shoulder 11 in the receiving holes 4 in its axial height in the contact cap 2 not for all contacts 5 equal. The middle two contacts 5 a contact row are arranged such that their contact portions 6 project further than the contact portions of the middle two contacts 5 surrounded outer contacts 5 of the contact attachment 2 , Thus meet the mating two contacts when mating a connector 5 earlier on corresponding sockets of a mating connector, not shown. As for introducing the example here as pins formed contact areas 6 the contacts 5 in corresponding sockets a force proportional to the holding force must be reduced in this contact arrangement, the Aufsteckkraft because not all of the according 1 all in all 24 Contacts this force must be applied simultaneously.

To the contacts 5 safely in the contact attachment 2 to fix is at the contact sections 6 the contacts 5 opposite end of the contact attachment 2 a contact holder 3 provided the contact receiving holes 4 partially closes at its rear end and for each contact receiving hole 4 an opening 17 for performing connection cables 15 to the contacts 5 exhibit.

According to the different axial height of the shoulders 11 in the different contact receiving holes 4 also has the contact holder 3 a stepped arrangement on to the contacts 5 in each case to the shoulders 11 inserted position in the contact receiving holes 4 to fix.

The contact holder 3 is by means of two locking tabs 7 with an internal profiling 8th on an external profiling 9 of the contact attachment 2 Pre-locked in an assembled state, in which between the contact holder 3 and the contact attachment 2 A gap 10 remains. In this mounting condition, tabs touch 18 on the contact attachment 2 facing side of the contact holder 3 around the breakthroughs 17 are arranged around, each in the contact receiving holes 4 absorbed elastic elements not yet.

This is the detailed representation according to 3 particularly clear to see which the retaining tongues 18 around the breakthroughs 17 of the contact holder 3 at a considerable distance from the elastic elements 13 in the contact receiving holes 4 shows.

Because the retaining tongues 18 can dodge elastic, it is also possible on a connecting cable 15 an elastic element 13 postpone and then a contact 5 with its connection opening 16 on a stripped end of the connection cable 15 aufzustecken and there, for example, set by crimping. This preassembled contact arrangement can then through the Durchbre Chung 17 and the elastically evasive retaining tongues 18 the pre-locked contact holder 2 in a contact hole 4 be inserted. It is particularly advantageous according to the invention that the elastic element 13 is constructed substantially annular and in its outer periphery in the outer periphery of the contact foot 12 equivalent. The further protruding sealing lips 24 the elastic element described in more detail below 13 can thereby plug in through the openings 17 of the contact holder 3 Dodge elastically.

To set the contact holder 3 at the contact attachment 2 surrounds the latching tab 7 of the contact holder 3 with its internal profiling 8th in sections, the contact attachment 2 with its external profiling 9 , wherein the internal profiling 8th and the external profiling 9 each by two spaced in the locking direction ribs 19 is formed, between which form locking grooves, in which the ribs 19 the other profiling can intervene.

In the in 3 shown mounting state are each a rib 19 the internal profiling 8th with a rib 19 the external profiling 9 fixed to each other. However, the mounting state with a similar Vorverrastung can also be achieved in that ribs 19 the internal profiling 8th and external profiling 9 under axial deflection of a certain elasticity having locking tabs 7 abut each other and the contact attachment 2 and the contact holder 3 jam together. In this case, it would be sufficient if the inner profiling and the outer profiling each only one rib 19 exhibit.

The in the 1 to 5 Locking or plug means shown represent only an example of inventively usable latching and plug means. In a simple modification, the locking tabs could 7 also at the contact attachment 2 be formed, wherein the contact holder 3 a suitable Außenpro filing 9 having. Other locking connections, for example by means of locking pins or the like are conceivable.

As the right of the middle contact receiving holes according to 2 to remove, has the contact receiving hole 4 in the area where it is the elastic element 13 takes up a total of three stages 20 . 21 . 22 with himself in the direction of the shoulder 11 tapered diameters. These act advantageously with the elastic element 13 together men, the following with reference to 3 will be described in more detail. The elastic element 13 has a passage 14 for a connection cable 15 on that in a connection opening 16 in the foot section 12 the contact opens.

On the foot section 12 of contact 5 facing side of the elastic element 13 is a sealing flange 23 formed with the lower end face of the contact 5 , ie the front side around the connection opening 16 around, interacts. The sealing flange has 23 in about the inside diameter of the step 21 corresponding outer diameter, wherein the sealing flange 23 preferably not sealingly on the inner wall of the contact receiving hole 4 in the area of the stage 22 is applied.

In the from the sealing flange 23 in the direction of the contact holder 3 extending next section are on the outer circumference of the elastic element 13 two sealing lips 24 provided with the wall of the contact receiving hole 4 in the area of the stage 21 sealingly cooperate. For this purpose, the outer circumference of the elastically yielding sealing lips in the relaxed state is greater than the inner diameter of the contact receiving hole 4 in the area of the stage 21 ,

At the contact holder 3 facing the end of the elastic element 13 , soft in the area of the step 20 is arranged, is a depression 25 in the elastic element 13 provided, in which the retaining tongues 18 of the contact holder 3 engage in the assembly state in which they the elastic element 13 Squeeze.

In the area of the sealing lips 24 and the depression 25 indicates the passage 14 of the elastic element 13 a corrugated sealing area 26 on, in which the elastic element with the insulation of the connecting cable 15 interacts and prevents moisture. At the same time, this corrugated portion becomes a holding and strain relief means in the assembled state.

This assembly condition is in 5 represented, differing from 3 this distinguishes that the gap 10 between the contact attachment 2 and the contact holder 3 disappeared and two locking tongues each 19 the external profiling 9 and the internal profiling 8th from contact attachment 2 and contact holders 3 locked together. Furthermore, the holding tongues abut 18 of the contact holder 3 in the wells 25 which a guide for the retaining tongues 18 on the elastic element 13 and press the elastic element 13 against the contact 5 in the contact receiving hole 4 ,

This will be the sealing flange 23 firmly against the foot section 12 of contact 5 pressed and thus seals the connection opening 16 of contact 5 from. Because the elastic element 13 in the 5 As a whole, the assembly state shown is compressed, so are the sealing lips 24 firmly outward against the wall of the contact receiving hole 4 in the area of the stage 21 pressed and sealed the contact receiving hole 4 thus against moisture ingress of the contact holder 3 facing back off. Furthermore, the corrugated sealing area 26 compressed so that the connection cable 15 for this contact 5 sealed there and fixed in particular for strain relief.

The elastic element 13 is preferably made of a rubber material.

4 shows one 2 corresponding representation of the plug 1 in its assembly state, in which the contact attachment 2 and the contact holder 3 in their working condition without a gap 10 locked together.

As the contact receiving hole shown without elastic element 4 to remove, the tabs protrude 18 of the contact holder 3 while far in the step 20 of the contact receiving hole 4 into it, in which the depression 25 of the elastic element 13 is in its relaxed state. This ensures that the elastic element 13 in the latched state of contact holder 3 and contact attachment 2 is compressed to the sealing and fixing effect of the elastic element 13 to effect.

6 shows a further embodiment of a plug according to the invention 1 in a detail with a slightly simpler elastic element 27 , which also in the contact receiving hole 4 a contact attachment 2 is plugged in. The elastic element 27 has two sealing lips 24 on which with the wall of the contact receiving hole 4 interact. Further, a depression 25 provided, in which the retaining tongues 18 around the breakthroughs 17 of the contact carrier 3 engage the elastic element made of rubber 27 squeeze and thus the connection cable 15 in the passage 14 to fix and seal, as well as a seal of the foot section 12 of contact 5 and the contact opening 4 to achieve in the manner already described. In contrast to the above-described elastic element 13 has the elastic element 27 however in the passage 14 no corrugated sealing area. This makes it possible, the elastic element 27 a little shorter overall.

The inventively provided elastic element 13 . 27 causes in addition to a seal the contact receiving opening and the contact foot of the contact 5 as well as a fixation or strain relief of the connection cable 15 also a certain mobility of the contact 5 in the axial direction with further compression of the elastic element, thereby improving the ease of finding and handling of the plug proposed according to the invention, since the contacts are better adapted to the mating contacts of the mating connector.

1

plug

2

Contact top

3

contact holder

4

Contact receiving hole

5

contacts

6

Contact section

7

snap tab

8th

internal profiling

9

outside profiling

10

gap

11

shoulder

12

foot section

13

elastic element

14

passage

15

connection cable

16

port opening

17

perforation

18

holding tongue

19

rib

20

step

21

step

22

step

23

sealing flange

24

sealing lip

25

deepening

26

corrugated sealing area

27

elastic element

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 0327701 B1 [0002, 0011]

Claims (9)

Plug with a contact receiving hole ( 4 ) for receiving electrical contacts ( 5 ) contact article ( 2 ) and a contact holder ( 3 ) for fixing the contacts ( 5 ) in the contact article ( 2 ), wherein the contact holder ( 3 ) on the contact article ( 2 ) and breakthroughs ( 17 ) for the passage of connecting cables ( 15 ) to the contacts ( 5 ), characterized in that in the assembled state of contact attachment ( 2 ) and contact holders ( 3 ) between a person in a contact hole ( 4 ) ( 5 ) and the contact holder ( 3 ) an elastic element ( 13 . 27 ) with a passage for the connecting cable ( 15 ) is recorded. Plug according to claim 1, characterized in that the elastic element ( 13 . 27 ) is designed as a seal. Plug according to claim 1 or 2, characterized in that the elastic element ( 13 . 27 ) is longer than that between the contact ( 5 ) and the contact holder ( 3 ) in the assembled state of contact attachment ( 2 ) and contact holders ( 3 ) remaining distance. Plug according to one of the preceding claims, characterized in that the contact holder ( 3 ) and the contact article ( 2 ) are fixable to each other in a different state of assembly from the assembly state. Plug according to claim 4, characterized in that the elastic element ( 13 . 27 ) is shorter than that between the contact ( 5 ) and the contact holder ( 3 ) in the assembled state of contact attachment ( 2 ) and contact holders ( 3 ) remaining distance. Plug according to one of the preceding claims, characterized in that the calculations ( 17 ) of the contact holder ( 3 ) around holding tongues ( 18 ) are provided, which in the assembled state of contact attachment ( 2 ) and contact holders ( 3 ) into the contact receiving holes ( 4 protrude). Plug according to one of the preceding claims, characterized in that the contact attachment ( 2 ) and the contact holder ( 3 ) Latching and / or plug-in means ( 7 . 8th . 9 19 ) exhibit. Plug according to claim 7, characterized in that the latching means on the edge of the contact holder ( 3 ) or the contact article ( 2 ) arranged locking tabs ( 7 ) with an internal profiling ( 8th ), which with an external profiling ( 9 ) on the outer circumference of the contact attachment ( 2 ) or the contact holder ( 3 ) interacts detentively. Plug according to claim 8, characterized in that the internal profiling ( 8th ) and / or the external profiling ( 9 ) two spaced-apart ribs ( 19 ) having.