Electrical plug connector with plug-in connection and cable outlet member

Abstract

An electrical plug connector with a plug-connection member and a cable outlet member is provided. The cable outlet member has a cable guidance channel for guiding and a cable clamping arrangement for fixing a cable which is connected to the plug-connection member. The cable outlet member has a first and a second housing shell and also a cap nut. The second housing shell is movable between an open position which releases the first housing shell and a closed position which covers the first housing shell. The cable clamping arrangement has clamping wedges which are arranged on the inner sides of the housing shells which face each other. The cap nut in the closed position of the second housing shell is able to be screwed onto the two housing shells.

Claims

1. An electrical plug connector, comprising: a plug-connection member which is adapted to be plug-connected to a complimentary plug-connection member configured to produce an electrical connection, a cable outlet member comprising a cable guidance channel for guiding a cable and a cable clamping arrangement for fixing the cable which is connected to the plug connection member, the cable outlet member comprising a first and a second housing shell and a cap nut, the second housing shell being movable between an open position which releases the first housing shell and a closed position which covers the first housing shell, the cable clamping arrangement comprising clamping wedges which are arranged on inner sides of the first and second housing shells which face each other, and in the closed position of the second housing shell, the cap nut being adapted to be screwed onto the first and second housing shells, wherein: the cable clamping arrangement further comprises a cable clamping element with at least two clamping jaws which are connected rigidly to at least one guide bar, with the at least one guide bar being held so as to be linearly displaceable parallel to a central longitudinal axis and to resist rotation on at least one of the first or second housing shell, and the at least two clamping jaws are adapted to be introduced into the cable guidance channel by screwing the cap nut onto the first and second housing shells and laid against the clamping wedges when the cap nut is screwed onto the first and second housing shells.

2. The electrical plug connector according to claim 1, wherein the second housing shell is mounted on the first housing shell so that the second housing shell is movable back and forth between the open position and the closed position.

3. The electrical plug connector according to claim 2, wherein the second housing shell is mounted pivotably on the first housing shell.

4. The electrical plug connector according to claim 1, wherein the two housing shells form a housing of the cable outlet member, the housing having a cylindrical end section which bears an external thread and has at least one elongate aperture in which the at least one guide bar is held so as to be displaceable.

5. The electrical plug connector according to claim 4, wherein the at least one elongate aperture is arranged between the two housing shells.

6. The electrical plug connector according to claim 4, wherein the at least one elongate aperture extends at least over an entire length of the external thread.

7. The electrical plug connector according to claim 1, wherein: the at least one guide bar comprises two guide bars; and the two guide bars are located diametrically opposed to one another and are each adapted to be introduced into an elongate aperture arranged between the two housing shells.

8. The electrical plug connector according to claim 1, wherein the at least two clamping jaws and the at least one guide bar are held on a supporting ring which together with the at least two clamping jaws and the at least one guide bar is insertable into the cap nut.

9. The electrical plug connector according to claim 8, wherein the cap nut has a step which is directed radially inwards, against which the supporting ring lies.

10. The electrical plug connector according to claim 8, wherein the at least two clamping jaws are directed with end regions thereof which are remote from the supporting ring obliquely inwards into the cable guidance channel.

11. The electrical plug connector according to claim 1, wherein the cable clamping element has a holding ring which is connected to the at least one guide bar and surrounds the two housing shells in a peripheral direction.

12. The electrical plug connector according to claim 11, wherein the holding ring is adapted to be placed on the cap nut.

13. The electrical plug connector according to claim 12, wherein a shield contact element is held at least on the second housing shell.

14. The electrical plug connector according to claim 1, wherein a resilient shield contact element is held on at least one housing shell, which resilient shield contact element is adapted to be pressed against shielding of the cable.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1: shows a perspective view of an electrical plug connector with a cable outlet member which has two housing shells and a cap nut screwed onto the housing shells;

(2) FIG. 2: shows a perspective view of the electrical plug connector of FIG. 1, the cap nut having been removed;

(3) FIG. 3: shows a perspective view of the cable outlet member of FIG. 1;

(4) FIG. 4: shows a perspective view of a cable clamping element of the electrical plug connector of FIG. 1;

(5) FIG. 5: shows a sectional view of the cable outlet member of FIG. 3, with a second housing shell assuming an open position relative to a first housing shell, and the cap nut together with the cable clamping element being arranged at a distance from the housing shells;

(6) FIG. 6: shows a sectional view of the cable outlet member corresponding to FIG. 5, the second housing shell assuming a closed position;

(7) FIG. 7: shows a sectional view of the cable outlet member corresponding to FIG. 5, the cap nut being screwed onto the two housing shells; and

(8) FIG. 8: shows a sectional view of the cable outlet member corresponding to FIG. 5, the cap nut which is screwed onto the housing shells having reached its end position.

DETAILED DESCRIPTION OF THE INVENTION

(9) The drawings show diagrammatically an advantageous embodiment of an electrical plug connector according to the invention which is assigned overall the reference numeral 10. The electrical plug connector 10 has a plug-connection member 12 and a cable outlet member 14. The cable outlet member 14 can be connected detachably to the plug-connection member 12. To this end, a total of four connection lugs 18, 20, 22, 24 are arranged on an end face 16 of the cable outlet member 14 which faces the plug-connection member 12, which lugs each have an aperture 26 and can be introduced into associated recesses which are arranged on the rear side of the plug-connection member 12 which faces the cable outlet member 14.

(10) The plug-connection member 12 can be inserted with a front end section 28 remote from the cable outlet member 14, which section is configured as a connecting plug, into a connecting socket known to the person skilled in the art. On the front end section 28, the plug-connection member 12 has electrical contact elements for producing an electrical connection with corresponding electrical contact elements of the connecting socket. In the example of embodiment illustrated, the front end section 28 including the electrical contact elements of the connection member 12 is covered by a protective cap 30 which can be placed on the front end section 28. The front end section 28 could alternatively also be configured as a connecting socket into which a complementarily configured connecting plug can be inserted.

(11) The cable outlet member 14 has a cable guidance channel 32 through which a cable connected to the electrical contact elements of the plug-connection member 12 can be passed. In the example of embodiment illustrated, the cable guidance channel 32 is formed angled and comprises a front end section 34 which faces the plug-connection member 12 and a rear end section 36 remote from the plug-connection member 12, the rear end section 36 in the example of embodiment illustrated being oriented perpendicular to the front end section 34. Provision may however also be made for the rear end section 36 to be oriented flush or at an acute angle to the front end section 34.

(12) The cable outlet member 14 has a first housing shell 38 and a second housing shell 40. The first housing shell 38 can be connected detachably to the plug-connection member 12 by means of the connection lugs 18, 20, 22 and 24, and the second housing shell 40 in the embodiment illustrated is mounted on the first housing shell 38 so as to be pivotable about a pivot axis 44 oriented perpendicular to a longitudinal axis 42 of the plug-connection member 12. The second housing shell 40 can be pivoted back and forth between an open position illustrated in FIG. 5, in which it releases the first housing shell 38, and a closed position illustrated in particular in FIGS. 6, 7 and 8, in which it covers the first housing shell 38.

(13) The two housing shells 38, 40 form a housing 46 of the cable outlet member 14 with a cylindrical end section 48 remote from the plug-connection member 12, which section bears an external thread 50.

(14) The cylindrical end section 48 has two elongate apertures 52, 54 located diametrically opposed to one another which extend over the entire length of the external thread 50 and open into the end 60 of the housing 46 which is remote from the plug-connection member 12. The elongate apertures 52, 54 are arranged between the two housing shells 38, 40 and are thus on one hand delimited by the first housing shell 38 and on the other hand by the second housing shell 40.

(15) A cap nut 62 can be screwed onto the external thread 50. The second housing shell 40 can thus be secured in its closed position on the first housing shell 38 by means of the cap nut 62.

(16) The cap nut 62 has a front edge 64 which faces the housing 46, and on its rear side 66 remote from the front edge 64 the cap nut 62 has a cable passage 68 which is surrounded by a step 70 which is directed radially inwards.

(17) In order to clamp a cable introduced into the cable guidance channel 32 securely, the cable outlet member 14 comprises a cable clamping arrangement with a cable clamping element 72 which is shown enlarged in FIG. 4, and with clamping wedges 93, 95 which are explained in greater detail below. The cable clamping element 72 has two elastically deformable clamping jaws 74, 76 which are located diametrically opposed to one another, and also two guide bars 78, 80 which are located diametrically opposed to one another between the clamping jaws 74, 76. The clamping jaws 74, 76, just like the guide bars 78, 80, are connected in one piece with a supporting ring 82 and can be inserted into the cap nut 62 before the cap nut 62 is screwed onto the external thread 50. The supporting ring 82 can be supported on the step 70 of the cap nut 62 which is directed radially inwards. This becomes clear in particular from FIG. 5.

(18) The clamping jaws 74, 76 have a constant material thickness practically over their entire length, but the external diameter and the internal diameter of the clamping jaws 74, 76 decrease with increasing distance from the supporting ring 82. With their front end regions which are remote from the supporting ring 82, the clamping jaws 74, 76 are thus inclined radially inwards into the cable guidance channel 32.

(19) In addition to the supporting ring 82, the cable clamping element 72 has a holding ring 84 which upon insertion of the cable clamping element 72 into the cap nut 62 can be positioned on the front edge 64 of the cap nut 62. The holding ring 84 is connected in one piece to the guide bars 78, 80.

(20) The guide bars 78, 80 protrude over the holding ring 84 with their front end regions 86, 88 which are remote from the supporting ring 82. When screwing on the cap nut 62, into which the cable clamping element 72 has previously been inserted, the front end regions 86, 88 of the guide bars 78, 80 may be inserted in each case into an elongate aperture 52, 54. Then the cap nut 62 can engage with the external thread 50 and be screwed onto the external thread 50. In such case, the guide bars 78, 80 slide along the two housing shells 38, 40 in the apertures 52, 54. The guide bars 78, 80 ensure that when the cap nut 62 is screwed onto the external thread 50 the cable clamping element 72 is moved merely in the axial direction, but cannot execute a rotary movement.

(21) The clamping wedges 93, 95 of the cable clamping arrangement which have already been mentioned are arranged on the inner sides of the housing shells 38, 40 which face each other, directly adjacent to the end 60 of the housing 46. The clamping wedges 93, 95 have inclined faces 94, 96 which are directed obliquely inwards. When the cap nut 62 is screwed on, the free end regions of the clamping jaws 74, 76 which are inclined radially inwards slide along the inclined faces 94, 96 and are supported thereby in the radial direction to the outside. This becomes clear in particular from FIGS. 7 and 8.

(22) The second housing shell 40 bears on its inner side an elastically deformable shield contact element 98 which protrudes into the cable guidance channel 32, and just like the first housing shell 38 and the second housing shell 40 is manufactured from an electrically conductive material, preferably a metal. The housing shells 38, 40 are preferably manufactured from a die-casting material. The plug-connection member 12 too has an electrically conductive housing, so that effective electromagnetic shielding is achieved by the use of the electrically conductive housing shells 38, 40 and the use of the electrically conductive housing of the plug-connection member 12.

(23) As has already been mentioned, a multi-strand electrical cable can be connected to the electrical contact elements of the plug-connection member 12. To this end, the cable can be guided through the cable passage 68 of the cap nut 62 and the supporting ring 82 and the holding ring 84 of the cable clamping element 72. The cable can then be guided through the cable guidance channel 32, the second housing shell 40 being able to assume its open position in order to facilitate the introduction of the cable into the cable guidance channel 32. Before introduction of the cable into the cable guidance channel 32, the shielding of the cable can be released. The individual strands of the cable can be connected to electrical contact elements of the plug-connection member 12. Then the second housing shell 40 can be pivoted into its closed position, with the cable being bent and the shield contact element 98 contacting the shielding of the cable. Finally, then the cap nut 62 can be screwed onto the external thread 50, the holding ring 84 surrounding the external thread 50 in the peripheral direction and the two clamping jaws 74, 76 receiving the cable between them. If the cap nut 62 has reached its end position, the clamping jaws 74, 76 clamp the cable in the cable guidance channel 32, so that tensile loading of the cable is not transmitted to the electrical contact elements to which the individual strands of the cable are connected. If a relatively thick cable is used, the cable clamping element 72 can be dispensed with and the cable can be clamped between the clamping wedges 93, 95.