DE19609571A1 - Coaxial connector for communication technology in automobiles - Google Patents

Abstract

The invention relates to a coaxial plug connector for communications technology, in particular in motor vehicles, comprising a plug (1) on which an interlocking device (10) is externally mounted, and a coupler (21) with interlocking means (27) on its outer surface. Downstream of the plug and socket connection in the direction of the axis (14) of insertion there is arranged on one side the bush (5) of the plug (1) and the external conductor of the coupler (21) and on the other the interlocking device (10) and the interlocking means (27) which engage in each other and are mutually in contact with respect to the internal conductor of the contact (6) and the fixed contact (25). The interlocking device (10) is a locating spring which is mounted at one point (9) in the vicinity of the insulating support (8) to the housing (2) of the plug (1), extends with at least one finger (12, 13) along the bush (5) and has at the tip of the finger (12, 13) a projection (16) counter to the axis (14) of insertion. The fingers (12, 13) extend rearwardly across that point (9) to form levers (18, 19) which can be pressed against the rear component (3) of the housing (2), thereby causing the fingers (12, 13) to pivot resiliently outwards. The interlocking means (27) on the coupler (21) are formed by an external projection or by a notch, behind or in which the fingers (12, 13) engage with the projection (16) thereof.

Description

The invention is based on a coaxial connector with those in the upper part handle of claim 1 specified physical features. Such a Connector is for telecommunications applications under the designation "IEC connector" known (IEC 169-16). With such an IEC connector the outer conductor of the socket is conical on the inside and takes the longitudinally slotted sleeve of the plug, which by a on the plug provided union nut, which is turned on an external thread of the socket is pulled into the socket, with elastic constriction of the sleeve of the connector. The well-known IEC connector has proven itself. With too increasing communication technology in automobiles (radio reception devices, mobile phones, cassette players, CD players, on-board computers,  Distance warning devices, navigation systems, telemetric road use fee entry systems, etc.) there is a need for coaxial connectors bind, which are cheaper than the IEC connectors, miniaturize can be conveniently and under the cramped installation conditions in the automobile assemble and handle.

The present invention has for its object to meet this need to satisfy.

This object is achieved by a connector with the in claim 1 given characteristics. Advantageous developments of the invention are counter the dependent claims.

To connect the connector according to the invention particularly conveniently To be able to cut and disconnect, the plug and socket are different from the IEC connector not screwed together, but with a detent spring locked each other. This detent spring is attached to the connector housing, and preferably set in an annular groove, which is on the outside on the Housing of the plug is located. This ring groove takes the detent spring around the axis se of the connector rotatable, but immovable in the longitudinal direction of the axis. It is conveniently located near the pre in the connector housing insulation support, at the transition from the rear part of the connector housing to the sleeve forming the front part of the connector housing. From this groove extends at least one finger along the lateral surface of the sleeve. If the outer conductor of the socket takes up the sleeve of the plug, then extend the fingers along the outer surface of the sleeve preferably at most to the front end of the sleeve and lie with their projection of the sleeve. Then when the plug is pushed into the outer conductor of the socket the fingers raised by it slide along the outer conductor of the socket and finally snap behind the locking means provided. Takes however, the sleeve of the plug on the outer conductor of the socket, then extend  the fingers along the lateral surface of the sleeve preferably up to over de ren front edge, at the projecting end of the at least one Fingers a projection directed against the axis of the plug is provided. When the plug is pushed onto the socket, the protrusions of the fingers move along the outside of the jack until it connects to one on the outside of the Socket provided incision or projection, especially on a collar to meet; if the plug is pushed further onto the socket the fingers, by sliding onto the waistband, bent radially outwards, and as soon as the protrusions of the fingers have overcome the collar, they spring radially inwards and effect the locking.

In the connector according to the invention in contrast to the IEC connector to push the sleeve of the plug over the outer conductor of the socket, he enables a particularly compact connector. With the outside diameter ser of the coaxial cable to which the connector is attached are the minimum external dimensions are essentially firm, both with regard to the rear Part of the connector housing, which is mounted on the jacket of the coaxial cable is, as well as with respect to the front part of the connector housing, which as Sleeve is formed and coaxially surrounds the inner conductor contact pin. Against it The socket cooperating with the plug can be more easily disguised nern, especially if it is a device socket on the housing an electrical or electronic device is provided; with a The socket, which is inserted into the sleeve of the plug, is a miniature The easiest way to set the coaxial connector.

The fingers are used to unlock and disconnect the connector going beyond the point (the groove) at which the detent spring is fixed, extended backwards to form levers, which extend from the lateral surface of the rear housing part of the connector have a distance so that they against the outer surface of the rear housing part can be pressed. One does  that, swing the fingers outwards and give the waistband, behind them they give way were locked, free.

The detent spring is preferably made of plastic and is made by injection molding produced. The catch spring preferably has a ring or a holder Bracket, which or which in the groove on the outside of the connector housing ses is locked and from which or from which in one direction the fingers and in the other direction the levers for operating the fingers going out.

It is best to have exactly two diametrically opposed fingers see which two diametrically opposite levers belong to each other. These can be put together even in tight spaces press easily and quickly, easier and faster than with a throw mother, with the further advantage that despite the inevitable Er vibrations that occur in the automobile, the latched detent spring The plug connection remains locked, whereas a screw can loosen the bond. In addition, the proposed snap connection billi is more than a screw connection.

Even with fingers arranged on one side only one can be sufficient achieve reliable interlocking of the plug and socket. A sided fingers are particularly useful in an advantageous development of the invention, in which the Klam intended for snapping onto the fingers mer to accommodate multiple connector housings next to each other as multiple clips is trained. This measure is advantageous primarily because this way several coaxial connectors side by side into one dependent group can be summarized. This will not only Bring order into an otherwise possible tangle of cables; this way tied group of plugs also hand together have with a handle on the associated sockets and the  The various plugs and sockets can be locked together a single common part. This embodiment of the invention is favorable in terms of small dimensions, easy handling and price worth manufacturing. The plugs can float in the multiple clamp will hold. Preferably, the bracket is part of the whole of the connector housing encompassing the frame or a whole of the plug kermehäuse encompassing half-shell, which makes the whole of the connector given more support and easier handling. At this frame or this half shell is preferably not only seen egg ne multiple brackets in front, but two multiple brackets, which in the direction the longitudinal axis of the connector are spaced apart; this measure also contributes to easier handling of the plug as a whole unit and enables the arrangement in an advantageous development of the invention of several fingers side by side, which a common lever to ih have actuation.

Such a locking spring fitting on a whole group of plugs can be found in one piece from plastic by injection molding. One poses such Latching springs with double, triple or quadruple brackets, then you can with a single type of single plugs as needed very easily double, three Make a multiple or quadruple connector.

With such multiple plugs, there is the possibility of locking the nenden fingers to save space, namely, that they in the zwickelför space between adjacent connector housings men, so that the multiple connector is hardly thicker despite the locking means as a single plug without locking means. Another advantage comes to that the fingers are sunk in the gusset spaces and are therefore useful when handling narrow cable spaces or when pulling in can hardly get caught or bump into wiring harnesses anywhere, so that Risk of unintentional unlocking is reduced. This training  The invention is particularly suitable in connection with sockets that egg ner corresponding unit are summarized, which in the gusset between neighboring bushes has protrusions or cuts behind which or in which the fingers engage with their projections in a form-fitting manner can.

The attachment of the connector to a coaxial cable can be known Way. E.g. can the rear housing part with a self-tapping or even better be equipped with a self-tapping thread with which it is screwed directly onto the jacket of the coaxial cable. Before preferably the rear housing part of the plug is designed as a crimp sleeve and is crimped onto the cable jacket. A crimp connection can be produced faster than a screw connection and offers Sufficient tensile strength in the automotive conditions. The In NEN conductor contact pin is preferably also designed as a crimp sleeve to the inner conductor of the coaxial cable with sufficiently secure contact to be able to connect the inner conductor contact pin of the plug.

Embodiments of the invention are in the accompanying drawings shown.

Fig. 1 shows a connector according to the invention half in a side view and half in longitudinal section,

Fig. 2 shows a matched to the plug in Fig. 1 female half in a side view and half in longitudinal section,

Fig. 3 shows the in Figs. 1 and 2 connector shown Fig. Sammengesteckt to in a side view, on a housing wall mounted,

Fig. 4 shows the plug connector illustrated in Figs. 1 and 2 sammengesteckt in a side view, wherein the sleeve is set back arranged in a recess of a housing wall,

Fig. 5 shows a detent spring with triple clamps to receive three plugs,

Fig. 6 shows the detent spring of Fig. 5 in a view of its underside,

Fig. 7 shows the section VII-VII of FIG. 6,

Fig. 8 shows the section VIII-VIII of FIG. 6,

Fig. 9 shows the view of the detent spring looking in the direction of the arrow IX in Fig. 6,

Fig. 10 shows the view of the detent spring in the direction of arrow X in Fig. 6,

Fig. 11 shows a coaxial triple-socket in a front view, due, to the group of plugs in Fig. 5

Fig. 12 shows the section XII-XII of FIG. 11,

FIG. 13 shows the section XIII-XIII according to FIG. 11, and

Fig. 14. Figure 14 shows the top view looking in the direction of arrow to the triple socket according to Fig. 11.

The same or corresponding parts are in the different figures designated with matching reference numbers.  

Fig. 1 shows a coaxial connector 1 , the one-piece housing 2 is designed as an outer conductor and has a rear part 3 , which receives a coaxial cable 4 , and has a front part 5 , which is designed as a sleeve and in a coaxial arrangement as an inner conductor serving contact pin 6 surrounds wel cher is formed as a hollow pin and the inner conductor of the Koa xialkabel 4 , not shown. Between the rear part 3 and the front part 5 of the housing 2 there is a middle housing section 7 , which inside carries egg ne insulating support 8 , in which the contact pin 6 is inserted, and which has an annular groove 9 on the outside, into which one by injection molding made of plastic locking spring 10 is inserted. The detent spring 10 consists of an engaging in the annular groove 9 ring 11 , from which two fingers 12 and 13 extend to the front, which are arranged diametrically with respect to the axis 14 , rest against the lateral surface of the sleeve 5 and gene over its front edge 15 In the section protruding beyond the edge 15 , the fingers 12 and 13 each have a projection 16 directed against the axis 14 , which is followed by a run-up slope 17 . In the alignment of the fingers 12 and 13 , a ring 18 and 19 extends from the ring 11 in the rearward direction, which extends at a distance from the rear part 3 of the connector housing.

The rear part 3 of the connector housing is designed as a crimp sleeve. In order to attach the connector 1 to the coaxial cable 3 , a piece of the cable jacket is first removed, thereby exposing the cable outer conductor 20 , which in the example shown consists of a metal braid. The cable outer conductor 20 is turned back so that it comes to rest on the cable jacket, the cable dielectric freed from the cable outer conductor is removed and in this way a piece of the cable inner conductor is exposed and the cable thus prepared is inserted into the connector 1 as far as it will go and the rear part 3 of the plug kergehäuses fixed by crimping on the cable jacket and the cable outer conductor 20 and the inner cable by crimping in the hollow inner conductor contact pin 6 .

The socket 21 shown in Fig. 2 is shown as a device socket whose one piece housing forms the outer conductor and is connected to a housing wall 22 of the device in question. In the socket 21 there is an insulating support 23 , in which an inner conductor contact socket 25 is provided which is provided with two longitudinal slots 24 and which is connected to a conductor 26 leading into the device. An annular collar 27 is located on the outside of the bushing 21 .

If the socket 21 and the plug 1 are plugged together, the sleeve 5 slides over the outer conductor of the socket -1 and at the same time the contact pin 6 is inserted into the inner conductor contact socket 25 , which widens elastically. In order to achieve good electrical contact between the outer conductor of the socket 21 and the sleeve 5 , the sleeve 5 should preferably be designed so that it can be elastically expanded, be it that it is designed to be thin-walled, be it that it is slit lengthways. Alternatively or additionally, a good end-face contact between the plug outer conductor and the outer conductor of the socket 21 can be achieved in that the projections 16 engaging behind the collar 27 not only have run-up bevels on one side, but also have run-off bevels on the other side ( Fig. 1), with which they pull the connector outer conductor against egg nen on the socket 21 stop when snapped.

During assembly, the fingers 12 and 13 meet with their cantilever 17 on the collar 27 , are spread because of the inclined surfaces 17 and pushed over the collar 27 until the projections 16 snap behind the collar against the axis 14 (see FIG. 3 ). To disconnect the connector, press the levers 18 and 19 together in the direction of the arrows 28 and 29 , whereby the fingers 12 and 13 are spread apart. Then you pull it back over the collar, taking plug 1 as a whole and pulling it away.

The exemplary embodiment in FIG. 4 shows a particular advantage of the invention: the fact that the plug 1 can be unlocked by pressing the levers 18 and 19 together, it is possible to reset the socket 21 and protect it in a recess 28 in the housing 29 to accommodate.

Three plugs 1 , similar to those shown in FIG. 1, can be combined into a three-fold plug with the aid of a common locking device 10 , as shown in FIG. 5. Details of such a locking device 10 result from FIGS. 5 to 10. The locking device 10 has a frame which is approximately rectangular in plan view and has two triple clips 31 and 32 on its two longitudinal sides, which the three plugs 1 in parallel next to each other record, tape. In the one triple clamp 31 , the plug 1 is locked or clipped with its annular groove 9 , in the other triple clamp 32 , the crimping sleeve 3 adjoining the plug connector housing or the coaxial cable emerging therefrom is clipped or clipped. The locking device 10 combines the three connectors 1 in this way to a manageable unit. The locking device 10 is also formed in this embodiment as Rastfe and has for this purpose two fingers 12 and 13 which run parallel to one another and extend from that leg of the frame of the locking device 10 which forms the back of the triple clip 31 . The levers 18 used to actuate the two fingers 12 and 13 are connected to one another by a web 33 so that the two fingers 12 and 13 can be actuated together by pressure on the web 33 . The web 33 lies in the area of a window 34 provided in the frame.

The associated sockets 21 are - as shown in FIGS . 11 to 14 - combined into a triple socket with an integrally cast outer conductor. On one side of the triple bushing there are projections 36 in the gussets 35 , which exist between adjacent bushings 21 , but are not so high that they protrude from the gussets 35 . The projections 36 have inclined surfaces 37 , on which the fingers 12 and 13 slide together when plug 1 together with the sockets 21 until they engage with their projections 16 behind the projections 36 and bring about a positive locking.

In contrast to the first exemplary embodiment, the outer conductors of the sockets 21 take up the outer conductors 5 of the plugs 1 in this embodiment. Nevertheless, the construction of the connector remains compact because the fingers 12 and 13 are recessed in the gussets 35 .

The outer conductor of the triple socket is preferably made of die cast. The middle socket 21 is provided on the outer conductor with a longitudinal rib 38 which serves as a carrier for a coding.

Claims (18)

1. Coaxial connector for communication technology in automobiles
Consisting of a plug ( 1 ) with a one-piece housing ( 2 ) forming the outer conductor of the plug, which by means of an insulating support ( 8 ) holds the inner conductor of the plug forming a hollow contact pin ( 6 ) and one behind the insulating support ( 8 ) rear part ( 3 ) for attachment to the jacket of a coaxial cable ( 4 ) and in front of the insulating support ( 8 ) has a contact pin ( 6 ) coaxially surrounding sleeve ( 5 ) and outside a locking device ( 10 ) carries a locking device
and from a socket ( 21 ) with a rigid outer conductor and with a longitudinally slotted inner conductor contact socket ( 25 ) arranged coaxially therein and held by an insulating support ( 23 ) and with locking means ( 27 ) on the outside of the socket ( 21 )
whereby after the plug connection on the one hand the sleeve ( 5 ) of the plug ( 1 ) and the outer conductor of the socket ( 21 ) and on the other hand the locking device ( 10 ) and the locking means ( 27 ) interlock and the inner conductor contact socket ( 25 ) receives the contact pin ( 6 ) ,
characterized in that the locking device ( 10 ) is a latching spring which is attached to the housing ( 2 ) of the plug ( 1 ) at one point ( 9 ) near the insulating support ( 8 ), with at least one fin ger ( 12 , 13 ) extends along the sleeve ( 5 ) and projects beyond its front edge ( 15 ) and there has a projection ( 16 ) directed against the axis ( 14 ),
that the fingers ( 12 , 13 ) are extended beyond that point ( 9 ) to the rear to form levers ( 18 , 19 ) which can be pressed towards the rear part ( 3 ) of the housing ( 2 ), whereby the Swing fingers ( 12, 13 ) elastically outwards,
and that the locking means ( 27 ) on the bushing ( 21 ) are formed by an outer projection or by an incision, behind which or in which the fingers ( 12 , 13 ) engage with their projection ( 16 ). 2. Connector according to claim 1, characterized in that the sleeve ( 5 ) of the plug ( 1 ) receives the outer conductor of the socket ( 2 ). 3. Connector according to claim 2, characterized in that the locking means ( 27 ) on the socket ( 21 ) are formed by a collar. 4. Connector according to claim 3, characterized in that the Rastfe ( 10 ) in an on the outside of the connector housing ( 2 ) provided annular groove ( 9 ) is fixed. 5. Connector according to one of the preceding claims, characterized in that the detent spring ( 10 ) has a ring ( 11 ) with which it is fixed on the outside of the connector housing ( 2 ) and one of which the fingers ( 12 , 13th ) and on the other hand the levers ( 18 , 19 ) go out to actuate them. 6. Connector according to one of the preceding claims, characterized in that exactly two fingers ( 12 , 13 ) and two levers ( 18 , 19 ) are vorgese hen and these are diametrically opposed to each other in pairs. 7. Connector according to one of claims 1 to 4, characterized in that the detent spring ( 10 ) has a bracket ( 31 , 32 ) with which it is fixed on the outside of the connector housing ( 2 ). 8. Connector according to claim 7, characterized in that the Klam mer ( 31 , 32 ) is designed as a multiple clip for receiving a plurality of connector housings ( 2 ) side by side. 9. Connector according to claim 8, characterized in that the Klam mer ( 31 , 32 ) is part of the entirety of the connector housing ( 2 ) around the frame ( Fig. 5) or a half-shell. 10. Connector according to claim 9, characterized in that on the frame men ( Fig. 5) or on the half-shell two in the direction of the longitudinal axis of the connector spaced brackets or multiple clamps ( 31 , 32 ) are provided. 11. Connector according to one of claims 8 to 10, characterized in that a plurality of fingers ( 12 , 13 ) are provided side by side, which have a common lever ( 18 ) for their actuation. 12. Connector according to one of claims 8 to 11, characterized in that the fingers ( 12 , 13 ) with respect to the multiple clamps ( 31 , 32 ) are arranged so that they lie in gusset gaps between adjacent connector housings ( 2 ), and that a plurality of bushings ( 21 ) are combined to form a structural unit in which the projections ( 27 ) lie behind the fingers ( 12 , 13 ) in the gussets between the bushings ( 21 ). 13. Connector according to claim 12, characterized in that the book sen ( 21 ) receive the sleeves ( 5 ) of the plug ( 1 ). 14. Connector according to one of the preceding claims, characterized in that the detent spring ( 10 ) consists of plastic. 15. Connector according to one of the preceding claims, characterized in that the rear part ( 3 ) of the housing ( 2 ) of the plug ( 1 ) is designed as a crimp sleeve. 16. Connector according to one of the preceding claims, characterized in that the contact pin ( 6 ) of the plug ( 1 ) is ausgebil det as a crimp sleeve. 17. Connector according to one of the preceding claims, characterized in that the sleeve ( 5 ) and / or the socket ( 21 ) is formed radially resilient. 18. Coaxial connector ( 1 ) with the features contained in one of the preceding claims.