DE202005011694U1 - Plug esp. for electrical connection of motor vehicle trailer, has contact insert and housing cap interconnected via bayonet seal - Google Patents

Abstract

A plug has a housing cap (3) receiving a contact insert (1) with at least one contact pin (6) and on its front end (3a) is a bayonet connection part (2) for joining the socket outlet, preferably rotatably. The contact insert (1) and housing cap can be connected together via a bayonet seal.

Description

The The invention relates to a plug for an electrical connector, especially for the electrical connection of motor vehicle trailers, with a contact insert with at least one contact pin receiving housing cap, at the front end of a bayonet connector for the connection with a socket, preferably rotatable, is arranged.

Such a connector is, for example, from the EP 0 249 181 B1 known. This plug consists of at least a cap and a bayonet connector for connection to a socket and a cover support platform for the support of the socket cover in the open position, wherein the bayonet fitting consists of an inner sleeve and a rotatably mounted on this bayonet ring, wherein the inner sleeve the bayonet ring with the socket side surmounted by a Ringwulstansatz whose outer diameter is greater than the inner diameter of the bayonet ring, wherein the inner sleeve with a plug side facing outer shoulder to an inner shoulder of the bayonet ring in the axial direction applies, and wherein the contact insert by screwing the cap with the inner sleeve and pressing the contact insert against an inner shoulder the inner sleeve is fixed axially. Such connectors have proven themselves in practice diverse.

task The present invention is a plug of the aforementioned To design art so that it has fewer parts and easy and faster to assemble and disassemble.

These Task is in a connector of the type mentioned in particular eg solved by that contact insert and housing cap over a Bayonet are connected to each other.

On this way, it becomes unnecessary to provide a separate inner sleeve, which pressed into the bayonet ring known type and a separate contact insert must be provided. Besides, they are at the invented new plug assembly and disassembly easy and fast to accomplish.

In special design According to the invention, the contact insert comprises e.g. trained as bayonet grooves bayonet guides and the housing cap in the bayonet guides intervening e.g. as bayonet cams trained bayonet projections on, or vice versa.

there it is advantageous if the contact insert with a rear insert section in the front sleeve-like End of the housing cap is included where the bayonet lock can take place.

Of the Bayonet lock is preferably designed for safety reasons that closing (Twisting) of the bayonet lock between contact insert and housing cap required force is less than that for opening (untwisting).

contact insert and housing cap can do it be locked together in their bayonet lock position.

A such locking can be easily achieved, for example, by that at least one of the bayonet projections of the bayonet closure between contact insert and housing cap, e.g. due to a recess, in the associated bayonet guide, e.g. by a matching backdrop, is latched.

The Assembly is made even easier if, according to another optional Invention feature the bayonet guides designed as bayonet grooves at one end for the insertion of the bayonet projection formed as a bayonet cam in relation to the guide width the bayonet groove is slightly widened.

A Development of the invention is that the bayonet connection part designed as a bayonet sleeve and is rotatably mounted on the front end of the housing cap.

in this connection can the bayonet connector in its bayonet closure position relative to the housing cap be locked to secure the connector.

a functional structure of the plug receives one then when the bayonet fitting with a front sleeve section the housing cap protrudes and on a likewise protruding from the housing cap front Insertion portion of the contact insert is rotatably mounted.

A safe guidance between contact insert and bayonet connection part is obtained when the contact insert at least one forward facing annular shoulder forms, at which the bayonet connector with a corresponding Counter shoulder is present.

For easy handling of the plug when plugged into a socket, it is a bayonet connector relative to the housing cap in bayonet unlocking position, which in the plug is a prerequisite, preferably having a self-locking, which is further preferably unlocked when plugged into a socket. Here, the lid support platform always has the correct starting position.

Further Goals, benefits and applications The invention will become apparent from the following description of a embodiment the invention with reference to the accompanying drawings. All form described and / or illustrated features alone or in any combination, the subject matter of the invention, regardless of their summary in individual claims or their relationship.

It demonstrate:

1 a connector having the invention schematically in longitudinal section, and

2 compared to enlarged a detail of a bayonet projection in its locking end position in a bayonet guide.

The in 1 shown plug for an electrical connector has a contact insert 1 with several pins 6 , The contact insert 1 is with its rear insert part 1b in the front end 3a a housing cap 3 recorded, at the rear end 3b a flexible grommet 16 for the supply of the (not shown) connecting cable inserts.

On the front end 3a the housing cap 3 is a lid cover platform 9 carrying bayonet connector 2 rotatably mounted for connection to a (not shown) outlet. The contact insert 1 and the housing cap 3 are connected by a bayonet lock. In this case, the contact insert 1 distributed over the circumference trained as a bayonet bayonet guides 4 and the housing cap 3 matching in the bayonet guides 4 engaging, designed as a bayonet cam bayonet projections 5 on. Conversely, the bayonet guides 4 also on the housing cap 3 and the bayonet projections 5 accordingly at the contact insert 1 be provided.

The bayonet lock between contact insert 1 and housing cap 3 is designed in such a way that the force required to close it (closing) is less than that required for opening (unscrewing). This can, for example, be realized by the fact that contact insert 1 and housing cap 3 are latched together in their bayonet closure position, as for example in 2 is shown schematically. Thereafter, at least one of the bayonet projections of the bayonet lock between contact insert 1 and housing cap 3 a recess 5a , and the associated bayonet guide 4 a matching backdrop 4a , so that a latching, as shown, can take place. Visible is there designed as a bayonet bayonet guide 4 at its one end for the insertion of the bayonet projection formed as a bayonet cam 5 widened.

In the illustrated embodiment, the bayonet fitting is 2 designed as a bayonet sleeve and on the front end 3a the housing cap 3 rotatably mounted. The bayonet connector 2 can in its bayonet closure position relative to the housing cap 3 be locked to secure the plug connection to the socket. The bayonet connector 2 surmounted with a front sleeve section the housing cap 3 and is there on a likewise from the housing cap 3 outstanding front insert section 1a of the contact insert 1 rotatably mounted. The contact insert has 1 a forward-facing ring shoulder 7 at which the bayonet connector 2 with a corresponding counter-shoulder 8th is applied.

In the drawing is not apparent that the bayonet fitting 2 relative to the housing cap 3 in bayonet unlocking position may preferably have a self-locking, which is further preferably unlocked when plugged into a socket, so that the required for plugging the plug into a socket initial position of the parts always safe each other, but after plugging the plug into the socket the bayonet lock of the plug to the socket can be easily completed while the lid support platform 9 in the right end position comes.

The different sealing rings 12 . 13 and 14 serve to seal against the ingress of dirt and water spray.

1

contact insert

1a

front insert portion

1b

rear insert portion

2

Bayonet connector

2a

front sleeve section

3

housing cap

3a

front end of the housing cap 3

3b

rear end of the housing cap 3

4

Bayonet guides of the contact insert 1

4a

scenery

5

Bayonet projections of the housing cap 3

5a

recess

6

contact pins

7

annular shoulder

8th

counter shoulder

9

Cover-supporting platform

12

seal

13

seal

14

seal

15

Bayonet guides of the bayonet connector 2

16

spout

Claims (12)

Plug for an electrical plug connection, in particular for the electrical connection of motor vehicle trailers, having a contact insert ( 1 ) with at least one contact pin ( 6 ) receiving housing cap ( 3 ), at the front end ( 3a ) a bayonet connector ( 2 ) for connection to a socket, preferably rotatable, is arranged, characterized in that contact insert ( 1 ) and housing cap ( 3 ) are connectable to each other via a bayonet lock. Plug according to claim 1, characterized in that the contact insert ( 1 ), eg as bayonet grooves, bayonet guides ( 4 ) and the housing cap ( 3 ) in the Bejonettführungen ( 4 ) engaging, for example, as a bayonet cam formed, bayonet projections ( 5 ), or vice versa. Plug according to claim 1 or 2, characterized in that the contact insert ( 1 ) with a rear insert section ( 1b ) in the front sleeve-like end ( 3a ) of the housing cap ( 3 ) is recorded. Plug according to one of the preceding claims, characterized in that for the closing (twisting) of the bayonet lock between contact insert ( 1 ) and housing cap ( 3 ) required force is less than that for opening (turning up). Plug according to one of the preceding claims, characterized in that contact insert ( 1 ) and housing cap ( 3 ) are locked together in their bayonet closure position. Plug according to claim 5, characterized in that at least one of the bayonet projections ( 5 ) of the bayonet lock between contact insert ( 1 ) and housing cap ( 3 ), eg due to a recess ( 5a ), in the associated bayonet guide ( 4 ), eg through a suitable backdrop ( 4a ), is lockable. Plug according to one of claims 2 to 6, characterized in that the bayonet guide designed as a bayonet ( 4 ) at its one end for the insertion of the bayonet projection formed as a bayonet cam ( 5 ) is widened. Plug according to one of the preceding claims, characterized in that the bayonet fitting ( 2 ) formed as a bayonet sleeve and on the front end ( 3a ) of the housing cap ( 3 ) is rotatably mounted. Plug according to claim 8, characterized in that the bayonet fitting ( 2 ) in its bayonet closure position relative to the housing cap ( 3 ) is locked. Plug according to one of claims 8 or 9, characterized in that the bayonet fitting ( 2 ) with a front sleeve section ( 2a ) the housing cap ( 3 ) and on a likewise from the housing cap ( 3 ) outstanding front insert section ( 1a ) of the contact insert ( 1 ) is rotatably mounted. Plug according to one of claims 8 to 10, characterized in that the contact insert ( 1 ) at least one forward facing annular shoulder ( 7 ), on which the bayonet fitting ( 2 ) with a corresponding counter-shoulder ( 8th ) is present. Plug according to one of the preceding claims, characterized in that the bayonet fitting ( 2 ) relative to the housing cap ( 3 ) in bayonet unlocking position preferably has a self-locking, which is further preferably unlocked when plugged into a socket inevitably.