EP1735876B1 - Angled electric plug-in connector comprising a first angled limb and a second angled limb - Google Patents

Abstract

An angled plug-in connector ( 1 ) is provided having an insulating body that is located in a first angled limb ( 2 ) and that contains electric contacts. The conductor or conductors that extend from the insulating body extend through a second angled limb ( 3 ). The opposing end faces ( 2 a , 3 a) of the angled limbs ( 2,3 ) that lie in the angled region are oblique, generally forming a mitre and are interconnected by an articulation or in a detachable manner. At least one of the two angled limbs is provided with a recess or annular groove ( 10 ), which extends over the greater part of a circumference thereof, is open to an exterior over at least a part of its length, and in which a fitted spring-loaded ring ( 11 ) can be placed. The ring ( 11 ) is open or includes a gap ( 12 ) and has two end sections ( 13 ). At least one of the end sections projects beyond the recess or annular groove ( 10 ), extending from the angled limb when in the working position and engages in a retaining element ( 9 ) on the other angled limb, when in the locked or working position of the plug-in connector.

Description

The invention relates to an electrical angle-shaped connector, in particular with an electrical contacts having insulating body, which is arranged in the use position in a first angle leg of this connector, said emanating from the insulating body and the electrical contacts line or lines through a second angle leg to a consumer or to a Current source, wherein the two abutting in the angular range end faces of this angle leg obliquely and substantially mitred and - in particular in the region of an outer meridian - at least in the use position articulated or releasably connected to each other and wherein also a the use position of the two angle leg defining holder is provided ,

Such an angular connector is off DE 200 03 976.8 U1 known and has proven itself. For mutual fixing of the two angle legs in the use position flanges or flange pieces are provided on both angle legs, which can each be secured by a mutually enforcing screw together and on a housing wall or the like. This results in a determination of the two angle legs to each other, however, a greater effort is required for this mutual determination of the position of use when closing the two relatively pivotable angle leg. Especially the screwing is time consuming, especially when multiple screws must be set.

Although is off DE 34 03 772 C2 and from DE 37 09 963 C1 each an angular cable entry, which has no insulating body with electrical contacts, known in which the two angle legs are locked together, the locking devices must be attached to the angle legs themselves. The mutual connection is therefore no longer possible if, for example, one of the catches is damaged or breaks off due to material fatigue or overstressing.

There is therefore the task of creating an angular connector of the type defined, in which the assembly and in particular the acquisition of the position of use take less time and the risk that the mutual connection of the angle leg is unusable, is reduced.

To solve this problem, the angular connector defined above is characterized in that at least one of the two angle legs extending over the greater part of its circumference, at least over a part of its course outwardly open recess or annular groove is provided, in which a suitable in it Federring can be inserted or latched that this spring ring is open or interrupted in its course and at the opening or interruption has two end portions, of which at least one in the use position relative to the recess or annular groove and protrudes from the angle leg and in the closed or use position of Connector detects the holder on the other angle leg, is connected to or engages.

In this way, there is a closure for the angle-shaped connector, in which no time-consuming screwing must be performed to determine the two angle legs in their position of use. Rather, a snap-lock spring ring is present, which can engage due to its running over more than half of the circumference of an angle leg shape of this angle leg and then detected with at least one or both end portions of the holder on the other angle leg, so that both angle leg thereby in particular releasably are connected. Thus, the risk is reduced or eliminated that serving for mutual connection, integrally connected to the angle leg itself locking parts are damaged or even break and thereby weaken the mutual connection or make impossible.

Especially good is the mutual connection of the first and the second angle leg with each other when the two particularly symmetrical end portions of the spring ring in the position of use detect the holder on the other angle leg or engage in or are connected thereto. The two end parts, which emanate from the interruption or opening of the ring, so both can be used to connect to the other angle leg, which improves the mutual connection. Since the spring ring is open, so has an interrupted course, it can also be good for latching to him carrying angle leg bent something against its restoring force, then spring back in the use position and over more than half the circumference of this angle leg of this or in the recess or annular groove abut.

Thus the spring ring over more than 180 ° along the circumference of a run in an arbitrary cross-sectional contour having angle leg and may include these detent, the two arranged on both sides of the interruption of the spring ring end portions in use position have a smaller distance from each other, as it corresponds to the largest cross section of the angle leg or the diameter of the spring ring and the two end portions can relative to the Spring ring course bent outwards and in particular be arranged in the plane spanned by the spring ring plane. The spring ring may thus have approximately the shape of a "C", but the two free ends carry outwardly projecting end portions, which detect the second angle leg and the existing there bracket in the closed position of the connector.

The relative to the annular groove of an angle leg and relative to the spring ring in the direction of the other angle leg projecting end portions of the spring ring may have a distance from each other, in which a conical expansion body of the holder under expansion of at least these end portions or their distance can be pressed, at the other angle leg is arranged and under the conical spreader for the end portions has a distinction, wherein the conical spreader is about mushroom-shaped or has an approximately mushroom-shaped longitudinal section and engages in the use position with the spreader the spring ring end portions.

In this way, a quick release for the mutual connection of the two angle legs are formed, since the two angle legs must be pivoted or folded only in their position of use, whereby the holder with its spreader at the end portions of the spring ring, which is already locked with one angle leg , can engage by the spreader, the two end portions initially opposite Restoring force auseinancerbewegt until the under-spreading located in the region of the end parts is reached, so that they can then spring back into the closer position and thereby set the spreader behind them. The dimensions are coordinated so that this mutual determination is achieved when the two angle legs touch with their facing surfaces in the closed position.

In such an embodiment of the invention, it is therefore sufficient to mount the spring ring latching in its position of use on the one angle leg, after which the two angle legs only have to be folded together to close the connector and thereby locked to the end portions of the spring ring. This is much less time consuming than the fitting and tightening of usually several screws and moreover the risk that one of the mutual latching parts is damaged or broken, significantly reduced. If the spring ring with its end parts are damaged or overloaded, it can be easily moved without the entire connector is unusable.

The end portions of the spring ring may at least partially extend approximately parallel to each other or lying on parallel lines sections or points and their distance may be greater than the smallest dimension of the spreader of the holder but smaller than its largest dimension, what the starting position of these end parts or their location in the closed position. Thus, the spreader can enter into the space between the two end portions, when the two angle legs are folded to each other, and then due to its wedge shape or its conical training the press the two end portions against their spring force apart until the spreader moved through the gap between the two end portions and thereby the two angle legs are folded into their position of use. Thereafter, the end parts spring back by themselves in the approximate position and thus determine the position of use of the two angle legs.

In this case, the region of the holder located below the conical expansion body can have a dimension or width which corresponds approximately to the spacing of the two end parts of the spring ring or is slightly smaller or possibly slightly larger. If this dimension is equal to or smaller than the distance between the two end parts of the spring ring, they can practically spring back to their starting position. However, if the dimension or width of this portion of the holder is slightly larger than the distance between the two end portions in their relaxed position, they are in the closed position even with some spring pressure at this area of the holder.

The end portions of the spring ring may be straight, wavy or curved in its parallel course, in particular in opposite directions to each other. As a result, the latching can possibly be promoted and at the same time the end parts can be reinforced by such profiling against unwanted permanent deformation.

A modified embodiment of the connector according to the invention can provide that the detent spring or the spring ring receiving recess or annular groove after the pre-assembly - free end of the associated angle leg is limited by a separately attachable holding or flange and that the detent spring or the spring ring before attaching the separate holding or flange axially on the associated angle leg and the then still open recess or groove is attachable and that after attaching the detent spring or the spring ring, the recess or annular groove limiting part of the angle leg is attached. So if the annular groove and the detent spring having angle leg has a separate holding or flange optionally a rotatable intermediate piece, which allows a rotation of the angle leg and thus the entire connector - on, this can be exploited to form a boundary of the annular groove, so that Spring ring may not be widened for insertion into its annular groove, but can be plugged in the axial direction before the subsequently attachable boundary of the annular groove is provided.

The recess or annular groove may have an enlargement or broadening as a recess in its course, which may be sized so large that the spring ring located in the recess or annular groove can be detected by means of a tool. In this case, the widening of the recess may extend to one or both sides of the recess or annular groove. Thus, the user can attach a tool to the spring ring in the region of this spread and move the spring ring partially out of the annular groove, which leads to its spreading in the region of its interruption or opening. In this way, so the two end portions can be spread so that they release the cross-spreading or holding body and the connector can be opened.

It is expedient if the broadening of the annular groove of the opening or interruption of the spring ring approximately on a diameter or the cross-sectional center of the angle leg is arranged opposite. If the spring ring is moved out of its annular groove transversely with respect to the central axis of the angled limb by means of a tool and is thereby spread open in the region of its opening or interruption, this movement is distributed correspondingly uniformly over both end parts.

The cross section of the spring ring forming part or wire may be at least partially circular and / or polygonal, in particular rectangular. In particular, a cross-sectionally rectangular spring ring can fill a corresponding annular groove well and form a largely smooth course on the outside of the angle leg. It is advantageous if the cross section of the spring ring forming part or wire is consistent over its entire course.

In particular, the spring ring can fit in the recess or annular groove, so they practically fill, and be flush with its outer edge or its outer dimension with the edge of the recess or annular groove or recessed against the groove edge. This can avoid that the spring ring protrudes from the outline of the angle leg and possibly unauthorized or unintentionally solved.

A useful for the stability of the entire angled connector training may consist in that the particular provided with the spreader holder has a groove or the like recess which is open to the angle leg, on which the spring ring is arranged, and that this spring ring having Angle leg has a matching into the groove or recess locking projection. Thereby, the mutual connection of the two angle legs is stabilized in the transverse direction, so that forces exerted on the exposed angle leg in arbitrary directions well into the other angle leg and its attachment to a counterpart or a housing wall can be initiated.

An easy-to-use arrangement provides that the two end portions of the spring ring are independent of each other and can be spread apart easily accordingly. However, it may be appropriate that the end portions of the spring ring are connected to each other, in particular integrally connected and optionally the spring ring together with the end portions against a restoring force elastically over the cross section of the receiving angle leg is expandable. Such a spring ring can then be so far expanded so that it can be pushed axially over the not yet mounted angle leg until it has reached the annular groove, in which he then can be latched in the same way as an open at the end parts angle leg. The interconnected end portions can then still project relative to this angle leg in an approximately radial direction and cooperate with an expansion body and a holding part on the other angle leg in the manner already described. Also, such a spring ring also closed at the end parts can be expanded and expanded as far as possible by partial withdrawal from the annular groove in the region of the end parts, so that the expansion element of the holder is released again in order to be able to pivot the angle legs apart.

In all embodiments, it is advantageous if the recess or annular groove is arranged in a direction perpendicular to the central axis of the angle leg extending plane and if the end portions of this spring ring at right angles to the course of this angle leg in particular eccentrically to the center of this protrude. As a result, they correspond particularly well a bracket and its course at an angle or at right angles to the spring ring having the angle leg arranged other angle leg.

The recess or annular groove may be provided on the housing wall or a counterpart closer, in particular obliquely or at right angles thereto arranged angle leg and the holder for the or the end part can be located at the angle leg opposite this pivotable or detachable angle leg. The detent spring is then provided on the after attachment to the housing wall or a counterpart no longer movable angle leg, so that the pivoting of the other angle leg in its position of use causes the holder located thereon can be pressed between the end portions of the spring ring and locked it ,

But it is also possible that the recess or annular groove on which a housing wall or a counterpart more distant, in particular approximately parallel arranged angle leg is provided and that the holder for the or the end portion of the pivotable this angle leg in use position fixed to the housing wall or a counterpart installed angle leg is located. To close the connector, the angle leg is then pivoted together with the annular spring and its end parts, whereby they are then moved over the fixed support and its expansion body, wherein a spreading takes place, which ends with the locking already described.

In all embodiments, it is expedient if the holder on the angle leg carrying it in an area forming the inside of the angle in the position of use is arranged and in particular has a small width, as it corresponds to the largest cross-sectional width or the diameter of the angle leg. The holder is characterized practically invisible from the outside and especially for unkown and unauthorized persons thus opening of such a connector is difficult.

It is advantageous if the holder and in the position of use thus detected or engaging end portions of the spring ring in the use position below the angle legs in the angular space of the angular connector and are outwardly shielded from the angle legs in their width or cross-sectional dimension. As a result, the holder and the locking of the angle legs is protected and not easily accessible for unauthorized opening or even destruction.

The cross section of the angle legs can be circular or elliptical or square or rectangular, wherein these different cross-sectional shapes can also be provided differently on the two angle legs. The course of the spring ring is adapted to the cross-sectional shape of him carrying angle leg.

The connected to a housing wall or a counterpart angle leg may have a coaxial, a pivot bearing for the angle leg and the connector adapter and be connected thereto and this adapter can in particular for a connector with a fixed angle leg arranged on the annular groove or recess for the spring ring limit the recess to one side. Thus, such an adapter can have a dual function by one hand, the annular groove for the spring ring or the Ring spring limited and on the other hand allows the connector can be rotated relative to a housing wall or a counterpart about the central axis of the immediately adjacent angle leg.

It should be mentioned that in the contact region of the two angle legs, a sealing ring or O-ring can be arranged, which bears sealingly against both facing contact surfaces of the angle leg within the coupling region. In this case, the sealing ring or O-ring can be arranged in the use position in the radial direction deeper than the recess or annular groove, in particular in one of the mutual coupling or connecting serving recess or annular groove adjacent annular groove or the like may be arranged. It can therefore be accommodated despite the annular groove for the annular spring or the spring ring for mutual connection of the two angle legs at the contact area and a seal.

Especially when combining one or more of the above-described features and measures results in an electrical angle-shaped connector whose two relatively movable or pivotable angle leg can be connected by a quick release in their position of use. At the same time, at least on one of the angle legs so that integrally connected locking element, which could be damaged or break off, avoided and replaced by an easily replaceable ring spring or a spring ring, can serve on the protruding end portions as locking elements.

• zum Beispiel auf eine zunächst zur Hälfte noch offene Ringnut
• nicht möglich ist.

Thus, the spring ring is not too easily from the receiving him annular groove can be pulled across the course of the angle leg, it is advantageous if the annular groove and the spring ring over about three quarters or more, for example, about four fifths or about tenteenths of the circumference of the associated angle leg extends. Such a large wrap angle of the spring ring or the annular spring is held securely in its position of use, but can still be plugged well due to their elastic property transverse to the longitudinal central axis of the associated angle leg and locked, if an axial plugging

• For example, on an initially half still open annular groove
• not possible.

Fig. 1

in schaubildlicher Darstellung einen Steckverbinder gemäß der Erfindung mit zwei relativ zueinander schwenkbaren Winkelschenkeln, deren einer an einer Gehäusetrennwand durch einen Flansch angeschraubt ist und deren anderer in einer Ringnut einen Federring trägt, der in seinem Verlauf offen ist und an seiner Öffnung zwei abstehende Endteile hat, die zu einer an dem mit der Gehäusewand verbundenen Winkelschenkel angeordneten Halterung passen, von dieser aber noch getrennt sind, da dieser Steckverbinder noch nicht geschlossen ist,

Fig. 2

eine der Fig. 1 entsprechende Darstellung nach dem Verschwenken des oberen Winkelschenkels in Gebrauchsstellung, in der die beiden einander zugewandten, auf Gehrung geformten Stirnseiten dieser beiden Winkelschenkel aneinanderliegen, wobei die Endteile des Federrings mit der Halterung verrastet sind,

Fig. 3

eine der Fig. 1 entsprechende Darstellung, wobei die Ringnut und der Federring an dem mit einer Gehäusewand oder dergleichen verbundenen Winkelschenkel angeordnet sind und die Halterung an dem demgegenüber schwenkbaren Winkelschenkel vorgesehen ist, wobei außerdem die Ringnut durch einen Adapter einseitig begrenzt ist, der eine Drehlagerung enthält, die eine Verdrehung des gesamten winkelförmigen Steckverbinders um die Mittelachse des mit der Gehäusewand verbundenen Winkelschenkels erlaubt, in noch nicht geschlossener Offenstellung,

Fig. 4

eine der Fig. 2 entsprechende Darstellung der Ausführungsform nach Fig. 3 nach dem Verschwenken des freien Winkelschenkels in die Gebrauchsstellung, in der er mit dem mit der Gehäusewand verbundenen Winkelschenkel verbunden und durch die Endteile des Federrings verrastet ist,

Fig. 5

eine der Fig. 4 entsprechende Darstellung, wobei an dem Federring auf dessen den Endteilen abgewandter Seite ein Werkzeug oder Hilfswerkzeug angreift und den Federring soweit zurückzieht, dass die Endteile durch die Aufweitung des Federrings aufgespreizt und dadurch von der Halterung an dem anderen Winkelschenkel gelöst werden,

Fig. 6

in schaubildlicher Darstellung einen Federring vor seiner Montage, wobei das den Federring bildende beziehungsweise zu dem Federring gebogene Teil oder der den Federring bildende Draht einen runden oder vieleckigen Querschnitt hat,

Fig. 7

eine der Fig. 6 entsprechende Darstellung, wobei die beiden Endteile etwas bogenförmig ausgebildet und über einen Bogen einstückig miteinander verbunden sind,

Fig. 8

einen der Fig. 7 entsprechende Darstellung eines abgewandelten, geschlossenen Federrings, der einen quadratischen oder rechteckigen Querschnitt hat.

Hereinafter, exemplary embodiments of the invention are described in more detail with reference to the drawing. It shows in partly schematized representation:

Fig. 1

in perspective view of a connector according to the invention with two pivotable angle legs relative to each other, one of which is screwed to a housing partition by a flange and the other carries in an annular groove a spring ring which is open in its course and has at its opening two projecting end portions, which are fitted to a bracket arranged on the angle leg connected to the housing wall, but are still separated therefrom, since this connector is not yet closed,

Fig. 2

one of the Fig. 1 corresponding representation after the pivoting of the upper angle leg in the use position in which the two facing each other, mitred end faces of these two angle legs abut each other, wherein the end portions of the spring ring locked to the holder are,

Fig. 3

one of the Fig. 1 corresponding representation, wherein the annular groove and the spring ring are arranged on the associated with a housing wall or the like angle leg and the holder is provided on the opposite pivotable angle leg, wherein also the annular groove is bounded by an adapter on one side, which contains a pivot bearing, which is a rotation the entire angular connector is allowed around the central axis of the angle leg connected to the housing wall, in open position not yet closed,

Fig. 4

one of the Fig. 2 corresponding representation of the embodiment according to Fig. 3 after pivoting the free angle leg in the position of use, in which it is connected to the angle leg connected to the housing wall and locked by the end portions of the spring ring,

Fig. 5

one of the Fig. 4 corresponding representation, wherein on the spring ring on the side facing away from the end portions of a tool or auxiliary tool and retracts the spring ring so far that the end portions are spread by the expansion of the spring ring and thereby solved by the holder on the other angle leg,

Fig. 6

in perspective view of a spring ring before its assembly, wherein the spring ring forming or bent to the spring ring part or the spring ring forming wire a round or has polygonal cross section,

Fig. 7

one of the Fig. 6 corresponding representation, wherein the two end parts are slightly curved and integrally connected to each other via an arc,

Fig. 8

one of the Fig. 7 corresponding representation of a modified, closed spring ring, which has a square or rectangular cross-section.

In the description of the various embodiments obtained in their function matching parts even with a modified shape matching reference numerals.

A generally designated 1 electrical angle connector includes within a first angle leg 2 a non-illustrated and unrecognizable, electrical contacts having insulating body, wherein the outgoing of this insulator and the electrical contacts in a known manner outgoing line or lines by a second angle leg 3 a consumer and / or to a power source. The second angle leg 3 is attached to a housing wall 4 or a comparable counterpart, for example, to a pipe connection, in the use position.

The two abutting in the angular range in functional position end faces 2 a and 3 a of this angle leg 2 and 3 are inclined and arranged substantially mitred, as it is particularly clear in Fig. 1 and 3 , but also in the Fig. 2 . 4 and 5 recognizes.

Approximately in the area of an outermost meridian line are the two Angle leg 2 and 3 articulated and possibly releasably connected to each other, wherein the first angle leg 2 in the exemplary embodiment has a radially projecting flat or flange piece 5 as part of a common joint 6, while at the second angle leg 3 two a gap between them exposed flange pieces 7 are provided , between which the first flange piece 5 can engage, wherein the flange pieces 5 and 7 are connected by a transverse pin 8 rotatable or pivotable with each other.

But it would also be conceivable any other joint shape. For example, the individual flange piece 5 could also be provided on the second angle leg 3, while the flange pieces 7 engaging on both sides in the position of use could be arranged on the first angle leg 2.

In a manner to be described is also a the use position of the two angle legs 2 and 3 defining, generally designated 9 holder provided, wherein the use position in the Fig. 2 and 4 is shown and provides that the two end faces 2a and 3a are in their greatest mutual approach or touch each other.

In all embodiments, it can be seen that at one of the two angle legs, in the embodiment according to Fig. 1 and 2 on the first angle leg 2, in the embodiment according to 3 and 4 on the second angle leg 3, a running over the greater part of the circumference of this angle leg, practically over its entire course outwardly open recess or annular groove 10 is provided, in which a matching spring ring 11 is inserted or latched, wherein in Fig. 6 to 8 various embodiments of such Spring washers 11 are shown. In the Fig. 1 to 5 In this case, the respective spring ring 11 is already inserted or engaged in the recess or annular groove 10.

This spring ring 11 is in all embodiments, even in accordance with FIGS. 7 and 8 interrupted in the sense open or in its course that the ring form ends before its completion to a closed ring. One recognizes above all in the Fig. 6 to 8 clearly that the spring ring 11 with respect to its annular course has an opening or interruption 12, on which two end portions 13 depart from the course of the spring ring 11 and projecting outwards, ie beyond the outline of the spring ring 11.

The end portions 13 are according to the Fig. 1 to 5 Accordingly, with respect to the recess or annular groove 10 and are from the respective angle leg 2 or 3, so that they can detect the holder 9 at the other angle leg 3 or 2 in the closed or use position of the connector 1 and in a manner yet to be described so are connected or intervene in it. Above all, a latching with the holder 9 is provided in a manner to be described.

In this case, illustrate all the figures that the two end portions 13 of the spring ring 11 are arranged symmetrically to each other and capture in the use position, the holder 9 together on the other angle leg. For this purpose, the two end portions 13 of the respective spring ring 11 in a relaxed position according to the FIGS. 6 to 8 and in use position according to the FIGS. 1 to 5 a smaller distance from each other, as it corresponds to the largest cross section of the respective angle leg 2 or 3 or the diameter of the spring ring 11 and at the same time these end portions 13 are opposite to the Spring ring course bent in the region of the opening 12 to the outside and arranged in the plane spanned by the spring ring 11 level. The bends 14, via which the end portions 13 are connected to the actual spring ring 11, are practically located at the opening 12 or limit this opening 12, as shown in the FIGS. 6 to 8 is clearly visible.

In this case, the end portions 13 have a distance from each other, in which a conical or wedge-shaped spreader 15 of the holder 9 can be pressed by widening at least these end portions 13 or their distance, which is arranged on the other angle leg and under the wedge-shaped or conical spreader 15 for End portions 13 an undercut 16 ( Fig. 1 and 3 ), wherein this spreader 15 is approximately mushroom-shaped or has an approximately mushroom-shaped longitudinal section and in the position of use with the spreader 15 and the underside located on its underside 16, the spring ring end portions 13 overlaps.

When comparing the Figures 1 and 2 or 3 and 4 It is clear that the holder 9 passes with its mushroom-shaped expansion body 15 when closing the respective angle leg 2 in the region of the end portions 13, so that they can be pushed apart by the spreader 15 until the undercut 16 enters the region of the end portions 13. In this position ( Fig. 2 and 4 ), the end portions 13 due to their spring force spring back into the relaxed or largely relaxed position and then under the spreader 15 engage the undercut 16, so keep the angle leg 2 in the closed position.

In the exemplary embodiment, the end portions 13 of the spring ring 11 extend in a relaxed position approximately parallel to each other. You could but also have only portions or points lying on parallel lines, wherein it is important in all cases that their distance is greater than the smallest dimension of the wedge-shaped expansion body 15 of the holder 9, but smaller than its largest dimension. Thus, the spreader 15 can first enter with its smaller dimension between the end portions 13 and then press them apart or spread apart due to its increasing dimension in the folding of the angle leg until the undercut 16 is in the region of the end portions 13. It can according to FIG. 1 the spring ring with the end portions 13 relative to the fixed bracket 9 and its spreader 15 or according to FIGS. 3 and 4 conversely, the holder 9 are moved with the spreader 15 relative to the fixed end portions 13 in order to achieve the mutual, pre-described latching.

The located below the conical expansion body 15 in the region of the undercut area 17 of the holder 9 has a dimension or width which corresponds approximately to the clear or inner spacing of the two end portions 13 of the spring ring 11, so that in accordance with the position of use FIG. 2 or 4 practically have their starting position again. Optionally, however, this dimension or width of the region 17 could also be slightly larger, so that then the end portions 13 would rest against it under spring tension.

According to FIGS. 7 and 8 can the end portions 13 of the spring ring 11 in its parallel course also curved, in particular be curved in opposite directions, so that only a portion extends parallel.

The detent spring or the spring ring 11 receiving recess or annular groove 10 is in accordance with the embodiment FIGS. 3 to 5 after the free end of the associated Minkeschenkels 3 back, which end is connected in the position of use, however, on the housing wall 4, limited by a separately attachable holding or flange 18, so that the detent spring or the spring ring 11 before attaching this separate holding or flange 18 axially on the associated angle leg and then to the side still open recess or annular groove 10 can be plugged. After this axial attachment of the detent spring or the spring ring 11 can then be the recess or annular groove 10 to the side limiting part 18 attached to the angle leg 3 to complete the annular groove 10 also after this page and set the spring ring 11 accordingly.

In a frontally on both sides limited annular groove 10, however, a spring ring according to FIG. 6 under widening of its opening 12 approximately in the plane in which the annular groove 10 is located, are plugged until it practically wraps around the annular groove 10 and is then locked in the position of use.

In an analogous manner, the spring ring according to FIG. 6 but also removed again or at least so far withdrawn that the end portions 13 are spread apart, because by a retraction of the spring ring 11 of the groove bottom leads to a corresponding opposite expansion of the detent spring or the spring ring 11, as in FIG. 5 is indicated. In this way it can be achieved by spreading the end parts 13 that they leave the undercut 16, so that then the angle leg 2 can be opened again. The same applies to an arrangement according to the Figures 1 and 2 ,

To make this possible and to facilitate, the recess or annular groove 10 has a magnification or in its course Broadening 19 as a recess which is dimensioned so large that the spring ring 11 located in the recess or annular groove 11 can be detected by means of a tool 20, as in FIG. 5 is indicated. There, a screwdriver is indicated, with which the spring ring 11 can be engaged behind in the region of the widening 19 and then withdrawn to effect the already mentioned spread of the end portions 13.

The widening 19 of the recess may extend to one side. However, they could extend to both sides of the recess or annular groove 10 to capture the spring ring 11, for example, with a pair of pliers.

Furthermore, it would be conceivable that the spring ring 11 itself has a holding or barrel projection on which a tool could attack in order to withdraw it from the position of use something or completely.

The broadening 19 of the annular groove 10 is arranged in the embodiment of the opening 12 or interruption of the spring ring 11 approximately on a diameter or in the cross-sectional center of the angle leg 2 or 3, so that distributed by means of an auxiliary tool 20 retraction forces distributed evenly on both end portions 13 and the end parts 13 are moved approximately evenly apart.

In the FIGS. 6 to 8 is indicated that the cross section of the spring ring 11 forming part or wire may be at least partially circular and / or in particular rectangular.

FIGS. 6 and 7 shows spring rings 11 of circular cross section, while FIG. 8 an embodiment with a square or rectangular cross-section of the spring ring 11 forming material.

In this case, this cross section of the spring ring 11 forming part or wire over its entire course is constant. In this case, the spring ring 11 fits into the recess or annular groove 10 and is flush with its outer edge or its outer dimension with the edge of the annular groove or recessed against the groove edge, so that no protrusion on the corresponding angle leg 2 or 3 is formed by the spring ring 11. Particularly well, while the annular groove 10 are filled when a spring ring is used with a rectangular cross-section of it forming wire or part and the cross-sectional shape of the spring ring is adapted to the annular groove 10.

According to FIG. 1 the holder 9 has a groove 21 or the like recess, which is open to the angle leg, on which the spring ring 11 is arranged in the respective embodiment. Accordingly, also in the embodiment FIG. 3 a corresponding groove provided on the holder 9, but from the point of view, in the FIG. 3 is not recognizable. The spring ring 11 having other angle leg has a matching in this groove or recess 21 locking projection 22 so that in the closed position of the two angles and lateral forces can be transferred well. This locking projection 22 can be seen both in FIG. 1 as well as in FIG. 3 ,

In the FIGS. 7 and 8 a special feature is shown to the effect that the end portions 13 of the spring ring 11 are connected together and indeed in one piece, so that the resulting structure despite the opening 12 a total of a closed Course has. It is also this spring ring 11 together with the end portions 13 against a restoring force elastically over the cross section of the receiving angle leg out expandable, so after appropriate expansion in the axial direction of the respective angle leg pushed until then the spring ring 11 is incident and snaps into the annular groove 10 and survive the interconnected end portions 13 in the manner already described. These interconnected end portions 13 can then cooperate in the manner already described with a spreader 15 of the holder 9 are moved apart by this spreader 15 and elastic pass into the undercut 16 behind the respective spreader 15, wherein the spreader 15 and the undercut 16 expediently a 13 may have adapted contour to the course and the connection of the connected end parts. For example, the expansion body 15 in this case, contrary to the rectangular shape of the illustrated embodiments have a round contour.

Conveniently, the recess or annular groove 10 is arranged in all embodiments in a plane perpendicular to the respective central axis of the angle leg extending them and the end portions 13 of this spring ring 11 are perpendicular to the course of this angle leg eccentric to the center of him from, as well in FIG. 1 and 3 can recognize. This leads to a favorable shape and arrangement of the annular groove 10 and also of the spring ring 11 with respect to an arrangement in which the annular groove 10 and the plane spanned by it would be arranged obliquely to the central axis.

In the embodiment according to the FIGS. 3 to 5 is the recess or annular groove 10 in which a housing wall 4 or closer to a counterpart, in particular obliquely or - as provided in the embodiment at right angles to arranged angle leg 3 and the holder 9 for the or the end portion 13 is located at this angle leg 3 against pivotable or detachable angle leg second

In the embodiment according to FIGS. 1 and 2 the recess or annular groove 10 on one of the housing wall 4 or a counterpart ferneren, in particular approximately in use position arranged parallel thereto angle leg 2 and the holder 9 for the or the end portions 13 is located on the pivotable angle leg 2 opposite in the use position fixed to the Housing wall 4 or a counterpart installed angle leg. 3

In both cases, the pivoting of the angle leg 2 results from the open position in the in FIG. 2 and 4 shown closed position the already mentioned locking the holder 9 with the end portions 13, wherein in the case according to FIGS. 3 to 5 the holder 9 between the fixed end portions 13 and in the case of the embodiment according to FIGS. 1 and 2 the end parts 13 are moved relative to the fixed support 9. In both cases, this results in the expansion of the distance or gap between the end portions 13 until they have overcome the expansion part 15 and can engage in the underlying undercuts 16.

In both exemplary embodiments, the holder 9 is arranged on the angle leg supporting it in an area forming the inside of the angle in the use position and has a smaller width than corresponds to the largest cross-sectional width or the diameter of the respective angle leg 2 or 3. Accordingly, the Holder 9 and in the position of use so detected or engaging end portions 13 of the spring ring 11 in the position of use below which they are in their width or cross-sectional dimension superior angle legs 2 or 3 arranged in the angular space of the angled connector and shielded from the angle legs 2 and 3 to the outside, so that the Protected from the end portions 13 and the holder 9 existing closure and is largely inaccessible to unauthorized persons.

In the embodiments, the cross section of the angle legs 2 and 3 is circular. However, it could also be elliptical or square or rectangular, wherein one angle leg could, for example, have a circular and the other a rectangular or square cross section. In all cases, the course of the spring ring 11 is adapted to the cross-sectional shape of the angle leg, wherein the spring ring 11 grasp the respective angle leg extent and must include that the latching and positive retention described is achieved.

The connected with a housing wall 4 or a counterpart in the use position angle leg 3 has in the embodiment according to the FIGS. 3 to 5 a coaxial, a pivot bearing for the angle leg and the connector 1 containing adapter, which has already been mentioned as a holding and flange 18. Through the connection with this adapter 18 so the entire connector 1 is rotatable relative to the housing wall 4, that is, the direction of the angle leg can be changed. As already mentioned, this adapter or flange part 18, in the case that the recess or annular groove 10 is disposed on this fixed angle leg 3, this recess for the Limit spring ring to one side. It would also be conceivable, according to such an adapter 18 in the embodiment FIGS. 1 and 2 to provide, in which the spring ring 11 is disposed in an annular groove 10 on the angle leg 2.

In a manner not shown in the contact region of the two angle legs 2 and 3, a sealing ring or O-ring can be arranged, which can bear sealingly against the two facing contact surfaces 2a and 3a within the coupling region. In this case, this sealing ring or O-ring can be arranged in the use position in the radial direction deeper than the recess or annular groove 10 in an annular groove or the like.

It should be noted that the annular groove 10 and arranged in it in the use position spring ring 11 extends over about three quarters or more, for example about four fifths or about nine tenths of the circumference of the associated angle leg 2 or 3, wherein the annular groove for simplicity even over the entire circumference can run. A correspondingly large loop with a correspondingly large latching force of the spring ring 11 is obtained in this way.

The electrical angle-shaped connector 1 with two relatively movable, in particular pivotable or hinged angle legs 2 and 3 can be held in its closed or use position characterized in that at one of the two angle legs extending over the greater part of its circumference, outwardly open recess or annular groove 10 is provided, in which a matching spring ring 11 is arranged, said spring ring 11 is open or interrupted in its course and at the opening 12 or interruption has two end portions 13, opposite to the Ring course protrude outwards and thus protrude from the angle leg and capture in the closed position of the two angle legs a holder 9 on the other angle leg preferably detent.

The angle-shaped connector 1 has an insulating body containing electrical contacts, which is arranged in a first angle leg 2, wherein the outgoing of the insulating body and the electrical contacts line or lines extending through a second angle leg 3. The two abutting in the angular range end faces 2a, 3a of this angle leg 2, 3 are arranged obliquely and substantially mitred and articulated or releasably connected together. On at least one of the two angle legs extending over the greater part of its circumference, at least over part of its course outwardly open recess or annular groove 10 is provided, in which a spring ring 11 fitting in it can be inserted or latched open or in its course is interrupted and at the opening or interruption 12 has two end portions 13, of which projects at least one in use position relative to the recess or annular groove 10 and projects from the angle leg and detected in the closed or use position of the connector 1, a holder 9 at the other angle leg.

Claims (26)

1. Angled electric plug-in connector (1) particularly comprising an insulating member having electrical contacts which is arranged, in the position of use, in a first angled limb (2) of this plug-in connector, wherein the lead or leads proceeding from the insulating member and the electrical contacts extend through a second angled limb (3) to a consumer appliance or to a current source, the two end faces (2a, 3a) of these angled limbs (2, 3) which abut on one another in the angle region being arranged diagonally and substantially in a mitred position and - particularly in the region of an external meridian line - being jointed to one another or releasably connected to one another, at least in the position of use, and wherein additionally a clamp (9) is provided that fixes the position of use of the two angled limbs (2, 3), characterised in that on at least one of the two angled limbs is provided a recess or annular groove (10) extending over the major part of its circumference and opening outwards over at least part of its extent, into which a spring clip (11) designed to fit it can be placed or engaged, in that this spring clip (11) is open or interrupted in its configuration and has two end portions (13) at the opening or interruption, at least one of which projects relative to the recess or annular groove (10) in the position of use and is spaced from the angled limb and in the closed position or position of use of the plug-in connector (1) grips the clamp (9) on the other angled limb, is connected thereto or engages therein.
2. Plug-in connector according to claim 1, characterised in that the two, particularly symmetrical end portions (13) of the spring clip (11) In the position of use grip the clamp (9) on the other angled limb or engage therein or are connected thereto.
3. Plug-in connector according to claim 1 or 2, characterised in that the two end portions (13) of the spring clip (11) in the position of use are at a smaller spacing from one another than the maximum crors-section of the angled limb (2, 3) or the diameter of the spring clip (11), and In that the end portions (13) are bent outwards relative to the configuration of the spring clip and In particular are arranged in the plane spanned by the spring clip (11).
4. Plug-in connector according to one of claims 1 to 3, characterised in that the end portions (13) of the spring clip (11) that project relative to the annular groove (10) of one angled limb and relative to the spring clip (11) towards the other angled limb are at a spacing from one another into which a conical expansion member (15) of the clamp (9) can be forced, thereby expanding at least these end portions (13) or the distance between them, being arranged on the other angled limb and having an undercut (16) under the conical expansion member (15) for the end portions (13), the conical expansion member (15) being substantially mushroom-shaped or having a substantially mushroom-shaped longitudinal section, and in the position of use with the expansion member (15) engaging over the end portions (13) of the spring clip.
5. Plug-in connector according to one of claims 1 to 4, characterised in that the end portions (13) of the spring clip (11) extend substantially parallel to one another, at least in parts, or have portions or points located on parallel lines, and their spacing is greater than the smallest dimension of the expansion member (15) of the clamp (9), but smaller than its largest dimension.
6. Plug-in connector according to one of claims 1 to 5, characterised in that the area (17) of the holder located underneath the conical expansion member (15) has a dimension or width that substantially corresponds to the spacing between the two end portions (13) of the spring clip (11) or is slightly smaller or optionally somewhat larger.
7. Plug-in connector according to one of claims 1 to 6, characterised in that the end portions (13) of the spring clip (11) are straight, corrugated or curved in their parallel configuration, and in particular are curved in the opposite direction to one another.
8. Plug-in connector according to one of the preceding claims, characterised in that the recess or annular groove (10) which accommodates the latching spring or the spring clip (11) is delimited by a separately mountable retaining or flange portion (18) towards the free end of the associated angled limb (3) and in that, before the mounting of the separate retaining or flange portion (18), the latching spring or the spring clip (11) can be pushed axially onto the associated angled limb and the still open recess or annular groove (10) and that, after the latching spring or the spring ring (11) has been pushed on, the portion (18) that delimits the recess or annular groove (10) can be mounted on the angled limb (3).
9. Plug-in connector according to one of claims 1 to 8, characterised in that the recess or annular groove (10) has, along its path, an enlarged or widened portion (19) forming a clearance which is of such dimensions that the spring clip (11) located in the recess or annular groove (10) can be grasped using a tool (20).
10. Plug-in connector according to claim 9, characterised in that the widening (19) of the recess (10) extends on one or both sides of the recess or annular groove (10).
11. Plug-in connector according to claim 9 or 10, characterised in that the widening (19) of the annular groove (10) is arranged opposite the opening (12) or interruption in the spring clip (11) substantially on a diameter or the centre of the cross-section of the angled limb (2, 3).
12. Plug-in connector according to one of claims 1 to 11, characterised in that the cross-section of the part or wire that forms the spring clip (11) is circular and/or polygonal, particularly rectangular, at least in parts.
13. Plug-in connector according to claim 12, characterised in that the cross-section of the part or wire that forms the spring clip (11) remains constant over its entire path.
14. Plug-in connector according to one of claims 1 to 13, characterised in that the holder (9) has a groove (21) or similar depression which is open towards the angled limb, on which the spring clip (11) is arranged, and In that this angled limb comprising the spring clip (11) has a locking projection (22) fitting Into the groove or depression (21).
15. Plug-in connector according to one of claims 1 to 14, characterised in that the end portions (13) of the spring clip (11) are joined together, particularly joined together in one piece and optionally the spring clip (11) together with the end portions (13) can be elastically expanded, counter to a restoring force, beyond the cross-section of the angled limb that accommodates it.
16. Plug-in connector according to one of claims 1 to 15, characterised in that the recess or annular groove (10) is arranged in a plane that extends at right-angles to the central axis of the angled limb and the end portions (13) of this spring clip (11) protrude at right angles to the path of this angled limb, particularly eccentrically to the centre thereof.
17. Plug-in connector according to one of claims 1 to 16, characterised in that the recess or annular groove (10) is provided on the angled limb (3) which is closer to a housing wall (4) or a mating part, particularly diagonally or at right angles thereto, and in that the clamp (9) for the or each end portion (13) is located on the angled limb (2) that is pivotable or releasable relative to this angled limb (3).
18. Plug-in connector according to one of claims 1 to 16, characterised in that the recess or annular groove (10) is provided on the angled limb (3) which is more remote from a housing wall (4) or a mating part, particularly arranged substantially parallel thereto, and in that the clamp (9) for the or each end portion (13) is located on the angled limb (3) which, in the position of use, is Installed fixedly opposite this pivotable angled limb (2) on the housing wall (4) or a mating part.
19. Plug-in connector according to one of claims 1 to 18, characterised in that the clamp (9) is arranged on the angled limb carrying it in a region that forms the inside of the angle, in the position of use, and in particular has a width that is less than the maximum cross-sectional width or the diameter of the angled limb (2, 3).
20. Plug-in connector according to one of claims 1 to 19, characterised in that the clamp (9) and the end portions (13) of the spring clip (11) that are gripped thereby or that engage, in the position of use, underneath the angled limbs (2, 3) that exceed it in width or cross-sectional dimensions are arranged in the angle space of the angled plug-In connector (1) and are shielded to the outside by the angled limbs (2, 3).
21. Plug-in connector according to one of claims 1 to 20, characterised in that the cross-section of the angled limbs (2, 3) is circular or elliptical or square or rectangular and in that the configuration of the spring clip (11) is matched to the cross-sectional shape of the angled limb.
22. Plug-in connector according to one of claims 1 to 21, characterised in that the angled limb (3) connected to a housing wall (4) or a mating part has a coaxial adapter (18) containing a rotary bearing for the angled limb and the plug-in connector (1) and is connected thereto and in that this adapter (18) particularly for a plug-In connector with an annular groove (10) or recess for the spring clip (11) arranged on the fixed angled limb this adapter delimits the recess (10) to one side.
23. Plug-In connector according to one of claims 1 to 22, characterised in that the spring clip (11) fits into the recess or annular groove (10) and its outer edge or its outer dimension is flush with the edge of the recess or annular groove (10) or countersunk relative to the edge of the groove.
24. Plug-in connector according to one of claims 1 to 23, characterised in that in the area of contact between the two angled limbs (2, 3) is provided a gasket or O-ring which sealingly abuts on both of the facing contact surfaces of the angled limbs within the coupling area.
25. Plug-in connector according to one of claims 1 to 24, characterised in that the gasket or O-ring in the position of use is arranged radially deeper than the recess or annular groove (10) in an annular channel or the like.
26. Plug-in connector according to one of the preceding claims, characterised in that the annular groove (10) and the spring clip (11) extend over about three-quarters or more, for example over about four-fifths or nine-tenths of the periphery of the associated angled limb.

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