DK2804266T3

DK2804266T3 - Plug connector and stikforbindelsesstykkehus.

Info

Publication number: DK2804266T3
Application number: DK14166064.7T
Authority: DK
Inventors: Rainer Hunger
Original assignee: Wieland Electric Gmbh
Priority date: 2013-05-13
Filing date: 2014-04-25
Publication date: 2016-10-10
Also published as: EP2804266B1; DE102013008036B4; ES2594555T3; EP2804266A1; DE102013008036A1

Description

Description Connector housing

The invention relates to a connector housing comprising a line lead-in and a strain relief. A connector housing of this kind is firstly known from DE 101 55 414 A1. Said connector housing comprises a strain relief in which a slotted dome comprises two mutually facing sets of teeth. The edges of a locking tongue engage in the sets of teeth such that the locking tongue forms a locking mechanism together with the two sets of teeth. A disadvantage of said connector housing is the space conditions. Both the housing and the strain relief occupy an excessively large installation space. A space-saving strain relief for a connector housing is known from G 9412042.0. The disadvantage of this is the need to use assembly tools in order to be able to effectively prestress the clamping elements of the strain relief. A connector housing comprising a strain relief is known from US 2003/0013345 A1. The strain relief consists of two resilient clips which are enclosed in a housing shell and fasten an electrical line therebetween in a clamped manner. To permanently fasten the electrical line and thus close the strain relief, the housing shell is inserted into an outer housing, which is flush in the assembled state, and is locked therein. The side walls of the outer housing completely surrounding the housing shell also serve to positively lock the resilient clips in their clamping position, which fastens the electrical line in place.

Proceeding from said prior art, the problem addressed by the invention is that of providing a space-saving connector housing comprising a strain relief for the electrical line to be installed which can be assembled without using tools. The problem is solved according to the invention by the combination of features in claim 1. Some of the dependent claims contain advantageous developments of said invention and some contain developments that are inventive per se.

The invention is based on the consideration of being able to cost-effectively produce the connector housing and the strain relief from plastics moulded parts. For this purpose, a housing body is provided which produces a line lead-in at one end. At said end comprising the line lead-in, two clamping jaws are mounted on a guide bar so as to be movable transversely to the lead-in direction of the electrical line. The inner surfaces of the clamping jaws fasten the electrical line to be connected therebetween in a clamped manner. The outer surfaces of the clamping jaws diverge in an inclined manner towards the housing body. A carriage having a V-shaped inner contour is slid onto the clamping jaws. The V-shaped inner contour of the carriage covers the outer surfaces of the clamping jaws. The outer surfaces of the clamping jaws and the V-shaped inner contour of the carriage form a shape drive such that the clamping jaws are pushed towards one another by means of the slip-on movement of the carriage towards the housing body and thus fasten the electrical line positioned between their inner surfaces in a clamped manner. A continuously adjustable strain relief is produced by the invention, which makes it possible to install electrical lines having different line diameters in a type of connector housing.

In an advantageous embodiment, the carriage is U-shaped. The inner sides of the U-shaped legs comprise inclines diverging towards the housing body, which form the V-shaped inner contours. In an advantageous embodiment, locking elements are integrally moulded on the outer sides of the U-shaped legs for latching, preferably for incremental latching on the housing.

In another advantageous embodiment, the U-shaped legs of the carriage are each provided with a slot in a forked manner. The inner wall of the slot supports the inclined inner contour on its outer side of the slot facing the clamping jaw in order to form a V-shaped leg of the V-shaped inner contour of the carriage. The outer wall of the slot comprises teeth on its inner side of the slot facing the inner wall of the slot. The housing wall comprises corresponding counter teeth on its outer side. If the two housing walls are inserted together with their counter teeth into the slots on the U-shaped legs, they each form a locking mechanism together with the teeth on the inner sides of the slot of the outer wall of the slot. In this way, the carriage can be slid in small increments onto the housing body and can gradually prestress the clamping jaws. In this way, the clamping force acting on the electrical line can be built up continuously and without using tools.

In another embodiment, the carriage is designed as a plastics moulded part that is consistently free of undercuts. The carriage is composed of two identical sub-bodies that are placed one on top of the other in a mirror-inverted manner. The sub-bodies are preferably interconnected by a film hinge.

To pre-assemble the carriage, a guide projection and a receiving recess are each preferably formed in the region of the gusset between the U-shaped crossbar and the U-shaped legs. The parts are complementary to one another such that the two sub-bodies are guided onto one another and in addition are reinforced in the assembled state due to their mutual engagement during assembly.

The clamping jaws are preferably guided on a guide bar that is T-shaped in cross section. Sliding claws that are designed to be complementary to the T-shape of the guide bar are formed on the clamping jaws. The sliding claws can be easily slid on the guide bar and the clamping jaws can be continuously moved on the guide bar.

The connector housing can consist of a housing body formed in a single piece. Said housing body is preferably cuboid. In this case, the long sides of the cuboid form the housing walls, while the short sides of the cuboid form the ends having the line lead-in on one side and the plug or socket contacts on the other side. The line lead-in in turn comprises a rectangular opening cross section. In this case, at least one of the long sides of the opening cross section supports the guide bar. However, it is also entirely possible to form a guide bar on the two long sides, i.e. on the upper side and the lower side of the line lead-in opening, on which guide bar the sliding claws each fastened to the clamping jaws can be slid.

In another embodiment, the connector housing can be divided into two parts such that the housing body is formed by a base part and a by cover that closes the base part. In this embodiment, the guide bar is generally mounted on the base part. The cover can be either simply placed on the base part or pivotably mounted on the connector housing.

The clamping jaws preferably support C-shaped grip claws on the side thereof facing away from the sliding claws. Strips formed on the cover edges engage in said grip claws in order to form a hinged joint between the cover and the clamping jaws. The cover, which is pivotally mounted on the clamping jaws by means of the hinged joint, can be simply lowered towards the base part in order to lock the connector housing.

In a preferred embodiment, the base part is formed as a plastics moulded part. The clamping jaws are movably mounted on the base part by means of film hinges. For assembling, the clamping jaws are pivoted into their assembled position by means of the film hinges and, as already mentioned above, are slid on the guide bar by means of the sliding claws.

The base part and the cover comprise locking hooks and locking eyes in order to form additional locking parts for securing the cover to the base part in the final assembled position.

The above-mentioned hinge-like mounting of the housing cover on the grip claws of the clamping jaws is effectively supported by a track guide acting between the cover and base part. The lowering and locking movement of the cover for the final assembly of the connector housing is facilitated as a result.

The clamping jaws according to the invention form an effective strain relief for the electrical line to be installed in the connector housing. The clamping jaws can be moved virtually as desired in the radial direction relative to the electrical line. Axial tensile and compressive forces are introduced into the housing body and thus into the connector housing by means of the sliding claws and grip claws.

The clamping forces of the clamping jaws act perpendicularly to the central longitudinal axis of the electrical line. The clamping forces are introduced via the V-shaped inner contour and the inclined outer surfaces of the clamping jaws. By selecting a suitable angle of inclination of both the V-shaped inner contour and the inclined outer surface of the clamping jaws, the clamping forces acting on the electrical line can be multiplied.

The connecting contacts and the electrical line can be easily pre-assembled in the connector housing according to the invention. The strain relief can be retrofitted on the completely connected connector due to the two-part form of both the clamping jaws and the carriage.

The invention is described in more detail with the aid of the embodiment shown in the figures of the drawings, in which:

Fig. 1 shows a base part comprising clamping jaws movably mounted on film hinges,

Fig. 2 shows the base part from Fig. 1, comprising sliding claws of the clamping jaws slid onto the T-shaped guide bar,

Fig. 3 shows the base part from Fig. 1 and Fig. 2, comprising inserted plug-in contacts and showing an electrical line to be connected and completely opened clamping jaws,

Fig. 4 shows the base part from Fig. 3, comprising inner surfaces of the clamping jaws positioned on the electrical line,

Fig. 5 shows the base part from Fig. 4, comprising a cover which is in the open position and is adapted to the grip claws of the clamping jaw,

Fig. 6 shows the view from Fig. 5 but with the cover closed on the base part,

Fig. 7 shows the carriage formed by two sub-bodies before it is adapted to the housing wall,

Fig. 8 shows the connector housing in the final assembled state and

Fig. 9 is a sectional view of the carriage locked on the housing.

The base part 1 comprises at one end thereof a guide bar 3 that is T-shaped in cross section and extends in the transverse direction 2. Film hinges 6 are integrally moulded onto the housing walls 5 extending in the longitudinal direction 4 that extends perpendicularly to the transverse direction 2. Clamping jaws 7 are pivotally mounted on the base part 1 by means of the film hinges 6. The clamping jaws 7 have rounded inner surfaces 8. The inner surfaces 8 are hollow-cylindrically rounded in order to be able to receive an electrical line 9 that is cylindrical in cross section therebetween. The clamping jaws 7 are composed of a plurality of clamping jaw segments 10 that are arranged so as to be spaced apart from one another. The clamping jaw segments 10 of the interacting clamping jaws 7 are designed such that they mesh in the assembled state in the manner of fingers of clasped hands.

In addition, sliding claws 11 are formed on one side of the edges of the clamping jaws 7 facing the base part 1 and grip claws 12 are formed on the other side. The clamping jaws 7 are slid onto the guide bar 3 by means of the sliding claw 11. Moreover, Fig. 2 shows the outer surfaces 13 of the clamping jaw 7 diverging in the longitudinal direction 4 towards the base part 1. The embodiment in Fig. 3 shows the three-pin insert connector 14 comprising three plug-in contacts surrounded by protective envelopes having codings. In addition, the electrical line 9 to be connected is shown. The electrical line 9 is inserted into the base part between the clamping jaws 7 in the insertion direction extending in the longitudinal direction 4. In another processing step, the clamping jaws 7 are slid in the transverse direction 2 so far onto the electrical line 9 that the inner surfaces 8 of the clamping jaws 7 are flush with the electrical line 9.

To complete the connector housing, the cover 15 is adapted to the clamping jaws 7 by means of its strips 16 meshing in the grip claws 12. The cover 15 also comprises housing walls 5' extending in the longitudinal direction 4 which correspond to the housing walls 5 of the base part 1. For locking, the housing wall 5' of the cover 15 supports locking eyes 17, which fit around the locking hooks 18 projecting from the housing wall 5 of the base part 1 in the transverse direction 2. In addition, a part-circular guide track 19 is integrally moulded in the housing wall 5 of the base part 1. In said guide track 19, a tab-type extension 20 engages on the housing wall 5' of the cover 15. The extension 20 and the guide track 19 together form a track guide that additionally guides the cover 15 on the base part 1. While the region of the housing wall 5' of the cover 15 facing the insert connector 14 in the longitudinal direction 4 is smooth, the region of the housing wall 5' facing the clamping jaws 7 and the electrical line 9 supports counter teeth 21.

The embodiment thus shows a two-part housing, composed of a base part 1 and a cover 15. In the alternative embodiment having only a housing body, the base part 1 and the cover 15 would fuse together into a monolithic housing body. First the insert connector 14 would be slid into the monolithic housing in the longitudinal direction 4 via a line lead-in opening, in order to then fit the clamping jaws 7 and the remaining parts.

The carriage 22 consists of two sub-bodies 24 that are interconnected by a film hinge 23. The sub-bodies 24 are identical and are placed one on top of the other in a mirror-inverted manner in the final assembled state of the carriage 22. The sub-bodies 24 and the carriage 22 have a U-shaped cross section. The U-shaped legs 25 each comprise a slot 26. The inner walls 27 of the slot facing the clamping jaws 7 each support an inclined inner contour 28 in the final assembled state. The outer wall 29 of the slot facing away from the inner wall 27 of the slot in the transverse direction 2 supports teeth 30 on its side facing the slot 26.

For the final assembly, the two sub-bodies 24 of the carriage 22 are folded onto one another via the electrical line 9, so that the electrical line 9 is inserted in the carriage 22.

The carriage 22 is slid along the housing wall 5' comprising the counter teeth 21 by means of the slot 26, such that the teeth 30 on the outer wall 29 of the slot and the counter teeth 21 on the housing wall 5' engage and together form a locking mechanism. The two inclined inner contours 28 on the inner walls 27 of the slots form the V-shaped inner contour of the carriage 22.When the carriage 22 is slid in the longitudinal direction 4 onto the counter teeth 21 that are fastened to the housing walls 5' of the cover 15 in the embodiment, the inclined inner contours 28 slide onto the likewise inclined outer surfaces 13 of the clamping jaws 7, which surfaces diverge in the longitudinal direction 4 towards the base part 1, such that the clamping jaws 7 are pushed together in the transverse direction 2 and fasten the electrical line 9 therebetween in a clamped manner. The whole assembly of the connector housing is possible without using tools. In order to detach the strain relief or to disassemble the connector housing, working cavities 31 for screwdriver bits are provided on each side in the region of the outer walls 29 of the slot. In order to open the connector housing or to disassemble the strain relief, a screwdriver bit must be slid into each working cavity 31 in the longitudinal direction 4. With the aid of the screwdriver bits positioned in the working cavities 31, it is then possible to move the outer walls 29 of the slot outwards in the transverse direction 2 such that the teeth 30 and the counter teeth 21 disengage from one another such that the carriage 22 can be easily removed from the base part 1 or from the cover 15 in the longitudinal direction 4.

List of reference signs 1 base part 2 transverse direction 3 guide bar 4 longitudinal direction 5, 5' housing wall 6 film hinge 7 clamping jaw 8 inner surface 9 electrical line 10 clamping jaw segment 11 sliding claw 12 grip claw 13 outer surface 14 insert connector 15 cover 16 strip 17 locking eyes 18 locking hooks 19 guide track 20 extension 21 counter teeth 22 carriage 23 film hinge 24 sub-body 25 U-shaped leg 26 slot 27 inner wall of the slot 28 inclined inner contour 29 outer wall of the slot 30 teeth 31 working cavities

Claims

1. A connector housing having a housing body and a wire insert at one end of the housing body, such that two clamping trays (7) which clampingly fix an electrical wire (9) between its inner surfaces (8) and which are slidably transverse to the insertion direction of the electrical line (9), characterized in that the clamping trays (7) are slidably mounted on a guide rail (3) and that a longitudinally sliding slide (22) having a V-shaped inner contour engages the inclined , in the direction of the housing body, divergent outer surfaces (13), of the clamping trays (7) which drive the clamping trays (7).

Connector housing according to claim 1, characterized in that a U-shaped carriage (22) has divergent internal contours (28) diverging in the direction of a base part (1) as a V-shaped inner contour, formed on the inside of the U-legs ( 25).

Connector housing according to claim 1 or 2, characterized in that the U-legs (25) are each slotted in a fork-like manner with a slit inner wall (27), the slider side facing its associated clamping tray (7) has an inclined interior contour (28), and having a wear side wall (29) which, at its slit interior facing the slit wall (27), has a tooth (30) in such a way that the tooth (30) forms a locking mechanism together with a -toothing (21) arranged on a housing wall (5.5 ') plunging into the slot (26).

Connector housing according to claim 2 or 3, characterized in that two identical U-shaped sub-elements (24), preferably interconnected via a film hinge (23), for forming the carriage (22), are arranged facing each other.

Connector housing according to claim 4, characterized by a guide protrusion projecting perpendicularly to the overlying element (24) and engaging a corresponding complementary shaped receiving pocket on the opposite element (24).

Connector housing according to any one of claims 1 to 5, characterized in that the guide rail (3) has a T-shaped cross-section and a corresponding sliding claw (11), which in cross-section is complementary to the T-shaped at the lower edge of both clamping trays, in the final mounted condition, grips the guide rail (3).

Connector housing according to any one of claims 1 to 6, characterized in that the housing body is composed of a base part (1) and a lid (15) terminating the base part (1).

Connector housing according to any one of claims 1 to 7, characterized by C-shaped gripping claws (12) on the away edges of the lower ends of the clamping trays (7) and by gripping strips (16) engaging in the gripping claws (12). ) at the lid edges to form a hinge joint between the clamping trays (7) and the lid (15).

Connector housing according to any one of claims 1 to 7, characterized in that the clamping trays (7) are movably mounted with film hinges (6) on the base part (1).

Connector housing according to any one of claims 1 to 9, characterized by a partially circular guide path (19) in the housing walls (5) of the base part (1) and an extension (20) on the lid (15) which engages into the guide lane (19) to form a lane guide.