EP2365586A1 - Cable connector, in particular multi-terminal cable connector - Google Patents

Abstract

The connector has a plug-in part (10) with multiple contact elements (14) formed as contact bar. A cable receiver includes a strand carrier element for receiving strands of a multi-core flexible cable. The carrier element includes hook elements mounted in a rotatably-movable manner, and the strands are fixed among the hook elements and an inner wall of the carrier element in an installed condition by pivot movement of the hook elements. The strands are inserted into the carrier element, and the hook elements are pivoted along a direction of the strands.

Description

The invention relates to a cable connector, in particular a multi-pole cable connector for connecting a multi-core stranded cable.

From the DE 44 18 259 C1 a cable connector is known, which consists of a distribution piece for receiving the individual strands of a stranded cable, constructed of a handle and a cable gland with pressure screw cable receptacle and a contact carrier with contact chambers arranged in contact spikes and a cap nut for attaching the cable receptacle formed on the distributor plug-in part. The cable-side end portion of the distribution piece is formed in the cross section as an octagon, wherein the eight flat lateral surfaces taper conically towards the free end. The inner contour of the plug-side portion of the handle is adapted in shape to the outer contour of the cable-side end portion of the distributor. The distributor is penetrated by four axially parallel channels for receiving non-stripped stranded conductors, wherein the intermediate walls of each two channels and the opposite outer walls between the channels and the corresponding lateral surfaces have slots, whereby two resilient outer parts are formed. The diameter of the channels is slightly smaller than the outer diameter of the individual strands, so that with the help of insertion funnels and the resilient outer parts, a slight clamping of the strands in the clamping region of the distributor, whereby the desired position of the strands is to be secured. In a further step, the distribution piece is pressed into the handle, wherein the cooperating conical surfaces a radial Force component is created, which should ensure the required clamping of the strands in the terminal area. In such an embodiment of a cable connector, however, only a relatively small clamping effect in the distribution piece on the individual strands is achievable, so that the risk of pushing back the strands during Kontaktiervorgangs with the contact spikes formed as contact elements is relatively large, so that a secure contact of the individual Strands of the stranded cable can not be guaranteed.

The object of the invention is therefore to provide a cable connector, in particular a multi-pole cable connector, available, by means of which an improved clamping effect of the inserted strands can be achieved in the cable connector in order to ensure a secure contact can.

The object is achieved by the features of claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

The cable connector according to the invention, in particular multi-pole cable connector for connecting a multi-core stranded cable has a plug part, which has a plurality of contact spikes formed as contact elements, and a cable receptacle comprising a Litzenträgerelement for receiving the strands of multi-core stranded cable, wherein the Litzenträgerelement pivotally mounted hook elements, which by a pivoting movement introduced into the heald carrier element strands between those in the direction of strands pivoted hook elements and an inner wall of the Fix the conductor element in the mounted state by clamping.

The cable connector according to the invention is characterized in that on the Litzenträgerelement additional hook elements are provided as a safeguard against undesired axial displacement of the strands along its longitudinal axis within the Litzenträgerelements, in particular when contacting with the contact pads formed as contact elements, which by a pivoting movement of the hook elements the Can fix strands in the desired position to ensure a secure contact of the strands with the contact elements can. When inserting the strands into the strand carrier element, the hook elements are preferably pivoted in such a way that they do not obstruct the insertion of the strands and thus are not arranged in the region of the insertion opening of the strand carrier element for inserting the strands into the strand carrier element or protrude into this region. Only when the strands are positioned in the desired position in the strand support member are the hook members pivoted to transfer to an assembled state toward the strands positioned in the strand support member such that the hook members engage the outer peripheral surface of the strands and abut them against an interior wall of the strands Press Litzenträgerelements and thus fix between the hook elements and the inner wall of the Litzenträgerelements clamping. The pivotal movement of the hook elements preferably takes place in that a sleeve is pushed over the outer peripheral surface of the Litzenträgerelements and thereby the hook elements of the sleeve, in particular an inner side surface of the sleeve, in the direction of the inner region of the Litzenträgerelements where the inserted strands are arranged, moved, preferably pressed. In this clamped fixed position a movement of the strands in the axial direction along its longitudinal axis is no longer possible. As a result, a pushing back of the strands opposite to the insertion direction of the strands into the strand carrier element during the contacting process of the strands with the contact elements can be prevented. The hook elements can exert a permanent contact pressure in the radial direction on the strands in the assembled state, in which abut the hook elements on the outer circumferential surface of the strands, in order to realize a secure fixation of the strands can. By the pivotable arrangement of the hook elements on the Litzenträgerelement both a simple, unhindered insertion of the strands can be ensured in the Litzenträgerelement as well as a subsequent secure clamping of the strands by means of the hook elements. The strands, as soon as they are fixed in a clamping manner by means of the hook elements, can be contacted axially along their longitudinal axis by the contact elements designed as contact spikes by connecting the plug part to the cable receptacle. By means of the pivotally mounted hook elements, a defined pressure can be exerted radially on the inserted strands. This ensures a secure fixation of the strands during contact.

According to an advantageous embodiment of the invention, the hook elements are designed such that by means of a hook element two strands are simultaneously clamped fixable. The hook elements are preferably designed such that they are so wide that they extend with their width over the outer diameter of two strands. This can reduce the number of necessary Components, in particular the hook elements, for fixing the strands in the strand carrier element can be reduced. In addition, the most uniform clamping of multiple strands can be ensured simultaneously by a constant pressure on several strands can be exercised simultaneously by a respective hook element.

Further, it is preferably provided that the hook elements are wedge-shaped. Due to the wedge-shaped design, the hook elements can hook particularly effectively along the outer peripheral surface of the strands and thereby fix them by clamping. The wedge-shaped formation is preferably provided in the region of the hook elements, which forms a free end of the hook elements, which is not arranged directly on the heddle element itself. The wedge-shaped hook elements may have a tip, which presses into the insulation of the strands and thereby achieve a particularly secure fixation of the strands in the desired position against axial displacement along its longitudinal axis.

The strand carrier element further preferably has guide elements for guiding the strands along their inner peripheral surface of the guide elements, wherein the guide elements are adaptable in their inner circumferential surface to the outer diameter of the strands inserted into the strand carrier element. The guide elements preferably each have a through bore formed as an inner circumferential surface, through which the strands can be guided during positioning on the cable receptacle. The guide elements are preferably arranged separately from the hook elements on the strand carrier element. Before the introduction of the strands in the Guide elements or in the through hole of the guide elements, the guide elements in the region of the through hole on an inner peripheral surface, which is adaptable to the outer diameter of the introduced strands. For this, the inner circumferential surface or the through-bore preferably has a diameter which is at least partially smaller than the outer diameter of the strands, wherein the guide elements are configured such that the guide elements can widen along their inner peripheral surface during insertion of the strands, so that the diameter the inner peripheral surface can increase according to the outer diameter of the inserted strands. This makes it possible to achieve a slight clamping of the strands already during insertion of the strands in the guide elements. The guide elements may preferably be so wide in their inner circumferential surface that they can just absorb the strands, so that in the inserted state of the strands essentially corresponds to the diameter of the inner peripheral surface of the outer diameter of the inserted strands.

The guide elements are preferably designed such that they exert a spring force radially on the strands in the region of a contact point in which the contact elements are inserted into the strands in a contacting state. By the radially applied to the contact point spring force a particularly secure contact between the strands and the contact elements is possible, which can be particularly effectively prevented that the contact, for example, by slipping out of the clamping elements from the strands dissolves.

The guide elements are preferably adaptable in their inner peripheral surface to the diameter of the inserted strands such that the guide elements have a slot-shaped opening along their longitudinal surface. The slot-shaped opening preferably does not extend over the entire longitudinal surface of the guide elements, but is formed only in one or more sections of the longitudinal surface of the guide elements. Through the slot-shaped opening, the guide elements in the region of this slot-shaped opening can be so wide when inserting the strands into the through-hole of the guide elements that it is just possible for the strands to be pushed through the guide elements or through the through-hole of the guide elements. As a result, an optimal and individual adaptation of the diameter of the inner peripheral surface to the outer diameter of the introduced strands is possible.

Further, it is preferably provided that the guide elements have an end portion which is conically shaped. The end portion, which is conically shaped, is preferably the end portion facing the end portion over which the strands are inserted into the guide member. The region of the guide element which is not conical in shape is preferably cylindrical. The conical shape of an end portion can already be a slight clamping of the introduced into the guide elements strands. Preferably, the slot-shaped opening is provided in the region of the conical end portion, so that the clamping caused by the conical shape of the end portion, in particular acting radially on the outer peripheral surface of the inserted strands Clamping force, optimally adapted to the introduced strands.

Preferably, it is further provided that the Litzenträgerelement has an annular surface and one or more integrally formed on the annular surface base plate elements, wherein the hook elements are provided on the annular surface and the guide elements on the base plate elements. Characterized in that the hook elements are arranged on the annular surface and the guide elements on the base plate elements, a separation of the function of the guide elements of the hook elements is possible, so that preferably the function of the hook elements is not influenced by the function of the guide elements and vice versa. The hook elements are preferably arranged pivotably on the annular surface of the Litzenträgerelements.

It is preferably provided that in each case two guide elements are provided on a base plate. A base plate is preferably designed such that it can accommodate two guide elements, so that two strands of a stranded cable can be taken over a base plate. Characterized in that preferably two guide elements are arranged on a base plate, a separation of the strands can be carried out with each other, so that interference in the form of crosstalk can be avoided with each other.

Further, it is preferably provided that a groove-shaped opening for receiving a screen element is provided between two base plates. The shield element is preferably formed on the plug part and can when assembling the plug part with the cable receptacle in the groove-shaped opening between two base plates are inserted. By means of the shielding elements, it is possible to prevent any influencing of two strands arranged on a base plate element. A screen element may be formed, for example, as a shield plate.

The invention will be explained in more detail below with reference to the accompanying drawings with reference to a preferred embodiment.

Fig. 1

eine Explosionsdarstellung eines Steckerteils für einen Kabelsteckverbinder gemäß der Erfindung;

Fig. 2

eine Explosionsdarstellung einer Kabelaufnahme für einen Kabelsteckverbinder gemäß der Erfindung;

Fig. 3

eine schematische Darstellung eines erfindungsgemäßen Litzenträgerelements;

Fig. 4

eine schematische Darstellung des in Fig. 3 gezeigten Litzenträgerelements mit darin eingeführten Litzen;

Fig. 5

eine schematische Darstellung des in Fig. 4 gezeigten Litzenträgerelements mit aufgeschobener Tülle;

Fig. 6

eine schematische Schnittdarstellung der in Fig. 5 gezeigten Anordnung des erfindungsgemäßen Kabelsteckverbinders;

Fig. 7

eine schematische Darstellung des in Fig. 5 gezeigten Litzenträgerelements mit aufgeschobener Tülle, wobei die eingeführten Litzen auf die entsprechende Länge gekürzt sind;

Fig. 8

eine schematische Darstellung einer Stirnseite des Steckerteils des erfindungsgemäßen Kabelverbinders; und

Fig. 9

eine schematische Schnittdarstellung eines Kabelsteckverbinders gemäß der Erfindung, wobei das Steckerteil mit der Kabelaufnahme verbunden ist.

Show it:

Fig. 1

an exploded view of a plug part for a cable connector according to the invention;

Fig. 2

an exploded view of a cable receptacle for a cable connector according to the invention;

Fig. 3

a schematic representation of a Litzenträgerelements invention;

Fig. 4

a schematic representation of the in Fig. 3 shown Litzenträgerelements with inserted strands;

Fig. 5

a schematic representation of the in Fig. 4 shown Litzenträgerelements with deferred grommet;

Fig. 6

a schematic sectional view of in Fig. 5 shown arrangement of the cable connector according to the invention;

Fig. 7

a schematic representation of the in Fig. 5 Shown cable support member shown with deferred grommet, the imported strands are shortened to the appropriate length;

Fig. 8

a schematic representation of an end face of the plug part of the cable connector according to the invention; and

Fig. 9

a schematic sectional view of a cable connector according to the invention, wherein the plug part is connected to the cable receptacle.

Fig. 1 shows an exploded view of a plug part 10 according to the invention, which for forming a cable connector according to the invention with a, as in Fig. 2 shown, cable receptacle 12 can be connected.

The plug part 10 has, as in Fig. 1 shown, formed as a contact spikes contact elements 14, by means of which arranged in the cable holder 12 strands of a multi-core stranded cable, in Fig. 1 not shown, can be contacted. For positioning the contact elements 14 in the plug-in part 10, the contact elements 14 can be inserted in a formed of a non-conductive material contact carrier element 16, which in turn can be arranged together with the contact elements 14 in a sleeve 18. A screw element 20 with a knurl 22 which can be arranged thereon can be pushed onto the sleeve 18 for connecting the plug part 10 to the cable receptacle 12. For secure connection of the connector part 10 with the cable holder 12 may be on the Knurl 22 a spring 24, a compression ring 26 and a sealing element 28, for example in the form of an O-ring, be formed.

In the Fig. 2 shown cable receptacle 12 has a Litzenträgerelement 30 for receiving the strands of an in Fig. 2 not shown stranded cable. The strand support element 30 can be inserted after receiving the strands in a spout 32, on the outer peripheral surface for attaching the cable holder 12, a nut 34 can be screwed, which may have a formed as an O-ring seal member 36, a crown 38 and a sealing sleeve 40.

In Fig. 3 the inventive wire support member 30 is shown enlarged. The strand support member 30 is preferably made of a non-conductive material, preferably a plastic material, and has an annular surface 42 and a plurality of base plate members 44 disposed on the annular surface 42.

On the annular surface 42 a plurality of hook members 46 are pivotally mounted, which by pivoting the introduced into the Litzenträgerelement 30 strands, not shown here, between those in the direction of strands pivoted hook members 46 and an inner wall 48 of the Litzenträgerelements 30, preferably an inner wall 48 of the base plate elements 44th , can fix in a mounted state by clamping.

The hook elements 46 are preferably wedge-shaped, wherein the hook elements 46 have an angle to the longitudinal surface of the Litzenträgerelements 30 formed surface 50, through which Sliding the grommet 32 over the heald carrier element 30, the hook elements 46 protruding from the annular surface 42 are pivoted radially inwardly toward the inner surface of the Litz carrier element 30 by the grommet 32 slides over the angled surfaces 50 of the hook elements 46 and thus a radially inward on the Apply hook 46 acting force and thereby can push them in the direction of the inner wall 48 of the Litzenträgerelements 30. The hook elements 46 are designed such that in each case a hook element 46 can fix two strands simultaneously by clamping. The hook elements 46 are formed curved along the contact surface 52 of the hook elements 46 on the inserted strands corresponding to the arrangement of the strands in the strand support member 30.

Viewed in the direction of insertion 54 of the strands in the strand carrier element 30, guide elements 56 are provided above the hook elements 46 on the baseplate elements 44 for guiding the strands to be contacted. The guide elements 50 each have a through hole 58 through which the strands can be passed. The guide elements 56 are preferably formed substantially cylindrical, wherein they have a conical end portion 60 formed. The conical end portion 60 faces the end portion 62 over which the guide members 56 are disposed on the base plate members 44. In the region of the conical end section 60, the guide elements 56 have a slot-shaped opening 64, which extends along the end face of the end section 60 and the longitudinal surface of the guide element 56. The slot-shaped opening 64 is formed on a respective guide element 56 such that the Guide member 56 is split by the slot-shaped opening 64 in two mutually movable side portions through which the through hole 58 can expand.

As in Fig. 3 can be seen, two guide elements 56 are arranged on a base plate member 44 so that the fixed by a hook member 46 strands are guided by two on a base plate member 44, parallel to each other guide members 56. The slot-shaped opening 64 of the two guide elements 56 arranged on a base plate element 44 are arranged one behind the other in a plane, so that a uniform widening of the two guide elements 56 arranged parallel to one another can take place on a base plate element 44.

In each case a groove-shaped opening 66 is formed between two base plate elements 44, into which screen elements 76 formed on the plug part 10, as in FIG Fig. 8 shown, can intervene.

Furthermore, a coding dome 68 is formed along the center axis of the strand carrier element 30, wherein the guide elements 56 are arranged substantially circularly around the coding dome 68.

Fig. 4 shows that in Fig. 3 Litzenträgerelement shown 30 with inserted therein strands 70 of a stranded cable 82. The stranded cable 82 has two mutually parallel strands 70, each having a common sheath 72. The sheath 72 partially leads into the heald carrier element 30. From the area of the strands 70, where the strands 70 by means of Hook elements 46 can be fixed by clamping, the sheath 72 is removed from the strands 70. However, each individual strand 70 still has its own insulation 74, which surrounds the core 80 of the respective strand 70.

At the in Fig. 4 the individual strands 70 are guided through the through holes 58 of the guide elements 56 of the Litzenträgerelements 30, wherein it can be seen that the guide elements 56 are widened in the region of the conical end portion 60 through the slot-shaped opening 64, whereby the diameter of the through hole 58th or the inner peripheral surface of the guide element 56 is optimally adapted to the outer diameter of the inserted strands 70 in order to already achieve a slight clamping of the strands 70 in the guide elements 56, since preferably in this state, the diameter of the through hole 58 corresponds to the outer diameter of the strands 70. At the in Fig. 4 shown state still no clamping fixation of the strands 70 by means of the hook members 46. In addition, the strands 70 are still arbitrarily far inserted into the Litzenträgerelement 30, so that they protrude beyond the guide elements 56.

As in Fig. 4 can be seen, on the cable 82, a braided shield 86 is arranged, which, as in Fig. 6 can be seen, starting from the in Fig. 4 is turned over, so that the braided shield 86 is placed over the front side of the wire support member 30 and is then cut overlapping with the annular surface 42 of the Litzenträgerelements 30. Im, like in Fig. 6 shown assembled state, the shield braid 86 is pressed with the annular surface 42 against the spout 32, so that a 360 ° screen connection is achieved by means of the shielding braid 86.

For contacting the strands 70, as in Fig. 5 can be seen, preferably in a next step, the spout 32 is slid over the Litzenträgerelement 30, while the hook members 46 are pivoted in the direction of the inserted strands 70, whereby the strands 70 of the hook members 46 between the hook members 46 and the inner wall 48 of the Litzenträgerelements 30 are trapped. This is in the in Fig. 6 shown sectional view of Fig. 5 clearly visible. The hook elements 46 hook with their wedge-shaped surface in the insulation 74 of the strands 70 and thereby prevent the strands 70 can be moved axially along its longitudinal axis.

After the strands 70 are secured against axial displacement by means of the hook elements 46, the strands 70 are preferably cut along the end face of the conical end portion 60 so that all the strands 70 have the same length as in FIG Fig. 7 can be seen. Before cutting the strands 70, it is advantageous if the nut 34 is screwed, whereby a strain relief on the cable 82 can be effected. After cutting off the strands 70, the contacting of the individual strands 70 with the contact elements 14 takes place.

Fig. 8 shows a mating face of an assembled connector part 10, which is connected to the fully assembled cable receptacle 12, as in Fig. 7 shown, is arranged for contacting. It can be seen that preferably two contact elements 14 are arranged parallel to each other, wherein each pair of contact elements 14th are shielded from each other by a shield element 76 in the form of a shielding plate. The arrangement of the contact elements 14 corresponds to the arrangement of the strands 70 in the cable receptacle 12 in order to realize a simple and fast contacting by nesting of the plug-in part 10 with the cable receptacle 12.

Fig. 9 shows a fully assembled cable connector, in which the plug member 10 is connected to the cable receptacle 12, wherein the contact elements 14, the strands 70 contact in the axial direction by the contact elements 14 with its spit-shaped end portion 78 is pressed into the wires 80 of the strands 70 in the axial direction be done so that a piercing of the strands 70. The contacting of the individual strands 70 with the respective contact elements 14 is preferably carried out at the same time by joining the plug part 10 with the cable receptacle 12. In the region of the conically shaped end portion 60 of the guide elements 56, the guide elements 56 each press in the radial direction on the strands 70, whereby a particularly secure contact can be made possible. The conical end portions 60 are based on, preferably elliptically shaped, openings 84 formed in the interior of the sleeve, as in FIG Fig. 8 can be seen, and thereby achieve a higher radial spring action on the contact point, where the contacting of the strands 70 takes place with the contact elements 14, and a better centering of the strands 70 and the wires 80 of the strands 70 to the spit-shaped end portion 78 of the contact point 14th at the contact.

The cable connector according to the invention, for example, as an Ethernet cable with PIMF shielding be formed, in which the strands 70 may be shielded in pairs by the sheath 72 formed as a metal foil. In the assembled cable connector, the sheath 72 of the individual strands 70 arranged as pairs may be introduced into the region of the strand support element 30 on which the hook elements 46 are formed, as in FIG Fig. 4 shown, so that in the assembled state, an overlap with the shield elements 76 of the male part 10 is provided. As a result, crosstalk of the side-by-side arranged as pairs strands 70 can be minimized.

LIST OF REFERENCE NUMBERS

plug part

10

cable storage

12

contact element

14

Contact support element

16

shell

18

screw element

20

knurled

22

feather

24

press ring

26

sealing element

28

Litzenträgerelement

30

spout

32

mother

34

sealing element

36

Crown

38

sealing sleeve

40

ring surface

42

Base element

44

hook element

46

inner wall

48

area

50

contact surface

52

insertion direction

54

guide element

56

Through Hole

58

end

60

end

62

Slot-shaped opening

64

Grooved opening

66

Codierungsdom

68

braid

70

jacket

72

insulation

74

screen element

76

Pike-shaped end section

78

Vein

80

stranded

82

opening

84

braided shield

86

Claims (10)

Cable connectors, in particular multi-pole cable connectors, for connecting a multi-core stranded cable (82), with
a plug part (10) which has a plurality of contact spikes formed as contact spikes (14), and
a cable receptacle (12) comprising a strand carrier element (30) for receiving the strands (70) of the multicore stranded cable (82),
wherein the strand carrier element (30) has pivotably mounted hook elements (46) which by means of a pivoting movement introduce the strands (70) inserted into the strand carrier (30) between hook elements (46) pivoted in the direction of strands (70) and an inner wall (48) of the strand Fix the cable carrier element (30) in an assembled state by clamping. Cable connector according to claim 1, characterized in that the hook elements (46) are formed such that by means of a hook element (46) two strands (70) are simultaneously clamped fixable. Cable connector according to claim 1 or 2, characterized in that the hook elements (46) are wedge-shaped. Cable connector according to one of claims 1 to 3, characterized in that the Litzenträgerelement (30) guide elements (56) for guiding the strands (70) along an inner peripheral surface of the guide elements (56), wherein the guide elements (56) in its inner peripheral surface of the Outside diameter of the in the Litzenträgerelement (30) inserted strands (70) are adjustable. Cable connector according to claim 4, characterized in that the guide elements (56) are formed such that they have a spring force radially on the strands (70) in the region of a contact point, in which the contact elements (14) in the strands (70) in a contacting State are exercised. Cable connector according to claim 4 or 5, characterized in that the guide elements (56) along their longitudinal surface have a slot-shaped opening (64). Cable connector according to claim 6, characterized in that the guide elements (56) have an end portion (60) which is conical in shape. Cable connector according to one of claims 1 to 7, characterized in that the strand-carrier element (30) has an annular surface (42) and one or more base plate elements (44) integrally formed on the annular surface (42), wherein the hook elements (46) engage on the annular surface (44). 42) and the guide elements (56) on the base plate elements (44) are provided. Cable connector according to claim 8, characterized in that in each case two guide elements (56) are provided on a base plate element (44). Cable connector according to claim 8 or 9, characterized in that in each case between two Base plate elements (44) has a groove-shaped opening (66) for receiving a screen element (76) is provided.

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