EP2559110B1 - Device for electrically connecting a cable, in particular a plug-in connector part having a shielded contact element - Google Patents

Description

The invention relates to a combination of a cable and a device for electrically connecting a cable, in particular a plug connection part with a shield contact element.

In the case of electrical plug connectors, a plug element and a socket element are usually plugged together, the contact elements of the plug element and the socket element coming into electrical contact with one another and the electrical current being conducted via the contact surfaces thus produced. In electrical engines or in vehicle technology, for example, a generic device connects an energy supply line or a cable to a motor or unit, the device being mounted on the line end or cable end.

If a cable with a cable shield is used for the power supply line, it is recommended or necessary to clamp the cable shield to a predeterminable potential, for example to ground potential. For this purpose, a shield contact element is used, which is also referred to below as a shield element.

The EP 1 587 165 A1 and the US 5,429,529 A each describe a combination of a cable and a device for electrically connecting the cable to a housing with the features in the preamble of claim 1, in which a shield element is arranged for electrically contacting a cable shield and for electrically connecting the cable shield to the housing, the shield element is in several parts and a first part of the shield element is in electrically connecting contact with the housing, and the first part is connected to the cable shield in an electrically conductive manner via at least a further part of the shield element.

Another device for electrically connecting a cable is shown in FIG WO 2007/101435 A1 out.

The invention has for its object to provide a combination of a cable and a device for electrically connecting a cable, in particular a plug-in connection part, with which a permanently reliable electrical contacting of the cable shield is guaranteed. In one embodiment, a high degree of contact reliability and a sufficiently high current carrying capacity are to be ensured, in particular the shield contacting should be insensitive to mechanical and / or thermal loads.

This object is achieved by the combination determined in claim 1. Particular embodiments of the invention are defined in the subclaims.

According to the characterizing part of claim 1, it is provided that the shield element has, as the first further part, a third part arranged in the housing, which has at least one first sleeve-shaped section, with the inside of which is the insulation of the cable with that lying thereon Cable shield is enclosed by the third part, and that on the outside of the first sleeve-shaped section of the third part, with the interposition of the cable shield folded around the free end of the first sleeve-shaped section, a second part of the shield element, which is arranged in the housing, is applied as a further part connects the first part of the shielding element to the cable shield in an electrically conductive manner and the cable shield is thereby electrically contacted.

In one embodiment, the device has a housing in which a shield element is arranged for electrically contacting a cable shield and for electrically connecting the cable shield to the housing. The shielding element is in several parts, with a first part of the shielding element being in electrically connecting contact with the housing part. The first part can be connected to the cable shield in an electrically conductive manner via at least one further part of the shielding element. The multi-part design of the screen element makes it possible to adapt the individual parts to the required properties, for example the first part of the screen element can be optimized with regard to the electrical contact and connection to the housing. This ensures permanent, reliable contact.

Furthermore, the multi-part design of the shield element ensures that the electrical contacting of the cable shield is ensured even when strong vibrations or forces occur. For this purpose, the other parts of the screen element can be optimized. In addition, the multiple parts ensure in a simple manner and yet with a high degree of contact reliability that a predeterminable distance between the contacting of the cable shield and the main contact of the device can be achieved.

In one embodiment, the first part of the screen element is essentially sleeve-shaped and resiliently deformable in the circumferential direction. For this purpose, the first part can, for example, run in the axial direction Have slot, preferably a continuous slot. As a result, the first part is resiliently deformable in the circumferential direction with comparatively small forces. This ensures a secure contact, in particular the outside of the first part, with the housing. In the undeformed state, the first part can be conical on the outside, the cone angle being between 0.5 ° and 10 °, in particular between 0.8 ° and 5 ° and preferably between 1 ° and 3 °. The first part can be resiliently deformable when inserted into a housing with a cylindrical or conical cavity.

It is advantageous that the contact-making contact of the first part of the screen element is ensured by a resilient deflection, the deflection being oblique and in particular transverse to the occurrence of tensile forces on the cable, as typically occurs in the event of vibrations or a vibration test. As a result, when vibrations occur, the first part is not subjected to any load in the direction of its contact-giving deflection, so that the shield contact provides a particularly high vibration resistance or vibration resistance.

In one embodiment, the first part has at least one contact means on its outside, which can be held by the spring-elastic deformation of the first part in an electrically connecting system on the housing. The resilient deformation or the acting restoring force provides the contact force. In one embodiment, the first part has a plurality of, in particular three, contact means which are preferably arranged uniformly distributed in the circumferential direction. The contact means can be formed in one piece from the first part. The contact means can be formed by embossing or shaping the first part.

In one embodiment, the inside of the first part has at least one further contact means, which is in electrical connection with one another another part of the screen element is durable. The first part can have a plurality of, in particular three, further contact means which are preferably arranged uniformly distributed in the circumferential direction. The further contact means can be formed in one piece from the first part. The further contact means can be formed by embossing or shaping the first part.

In one embodiment, the contact means on the outside and the further contact means on the inside are each arranged in pairs along a line parallel to the longitudinal axis of the shield element, in particular the first part of the shield element. As a result, the shield current flows in a straight line and / or parallel to the cable in the first part. The further contact means can form a stop for the axial movement of the first part relative to a further part of the screen element. The section of the first part which has the further contact means can be bent inwards relative to an adjacent or adjacent section, the angle being more than 0.2 ° and less than 6 °, in particular more than 0.5 ° and less than 4 ° and preferably can be more than 0.5 ° and less than 2.5 °. This ensures reliable contacting of the further part of the shield element and / or above all prevents the section from being subjected to bending stress with the further contact means in the event of the first part being pivoted. The first part can have means for avoiding or reducing eddy currents, for example longitudinal slots, which preferably extend parallel to the longitudinal axis of the first part or the screen element.

In one embodiment, the shield element has a second part which connects the first part to the cable shield in an electrically conductive manner. The second part has a sleeve-shaped section with which the second part can be crimped onto the cable shield. The second part forms a bridge from the radially inner cable to the radially outer cable Casing. The second part can also transmit a force in the axial direction with which the main contact of the device is held in contact with the housing.

In one embodiment, the second part with an edge section is in electrically connecting contact with the first part. The edge section can protrude with a radial directional component from a longitudinal axis of the second part, in particular project transversely to the longitudinal axis. The edge section can rest against an inside of the sleeve-shaped section of the first part. This ensures safe contact. The edge section can form a stop for an axial relative movement between the first and second part, in particular through the interaction with the further contact means of the first part.

In one embodiment, the shield element has a third part, which has at least one first sleeve-shaped section, with the inside of which the insulation of the cable with the cable shield lying thereon can be enclosed by the third part. The third part can in particular be fixed in a clamped manner on the cable, in particular the cable shield and / or the cable sheath. This ensures a secure mechanical attachment of the third part.

In one embodiment, the second part of the shield element can be applied to the outside of the first sleeve-shaped section of the third part with the interposition of the cable shield folded around the free end of the first sleeve-shaped section, and thereby the cable shield can be electrically contacted. The first sleeve-shaped section forms the counterhold for the application of the second part and thereby ensures reliable electrical contacting of the cable shield.

In one embodiment, the third part has a second sleeve-shaped section with which a jacket of the cable can be enclosed by the third part. The second sleeve-shaped section can be clamped to the jacket, which further improves the fastening of the third part to the cable. The second sleeve-shaped section has a larger inner diameter than the first sleeve-shaped section of the third part.

In one embodiment, a force can be transmitted in the axial direction within the housing by means of the shield element, by means of which a connecting element, which can be mechanically fixedly connected to an inner conductor of the cable, and thus the inner conductor of the cable, is immovably fixed in the housing when a tensile force occurs by positive locking. The power transmission takes place through positive locking, d. that is, the power transmission is not significantly determined by frictional forces. On axially opposite sides, parts of a fixing element are in contact with the screen element, in particular in contact with the second part of the screen element. The abutment of a first part of the fixing element, for example an insulating sleeve, on the screen element, for example on the second part, can be radially different from the abutment of a second part of the fixing element, for example a sealing sleeve, on the screen element. In particular, the contact of the first part of the fixing element can lie radially further inwards than the contact of the second part of the fixing element.

In one embodiment, the connector parts are designed for electrical voltages in the range of more than 12V and less than 2400 V, in particular more than 24 V and less than 1000 V and preferably up to an operating voltage of 700 V. In one embodiment, the connector parts in the Vehicle technology used, especially in electric or hybrid vehicles, or in electrical engines.

Fig. 1

zeigt eine perspektivische Ansicht eines ersten Ausführungsbeispiels eines Steckverbindungssystems;

Fig. 2

zeigt eine perspektivische Ansicht eines zweiten Ausführungsbeispiels eines Steckverbindungssystems;

Fig. 3

zeigt eine perspektivische Ansicht eines dritten Ausführungsbeispiels eines Steckverbindungssystems;

Fig. 4

zeigt eine Seitenansicht des Steckverbindungssystems der Fig. 3;

Fig. 5

zeigt eine perspektivische Ansicht des Steckverbindungssystems in einem teilweise getrennten Zustand;

Fig. 6

zeigt in perspektivischer Ansicht einen vergrößerten Ausschnitt im Bereich der Rastmittel;

Fig. 7

zeigt einen vergrößerten Ausschnitt im Bereich der Rastelemente;

Fig. 8

zeigt einen Ausschnitt eines Schnitts durch das Gehäuse des ersten Steckverbindungsteils;

Fig. 9

zeigt eine perspektivische Ansicht eines Abschnitts der Leitung mit der am Leiterende abgesetzten Isolation;

Fig. 10

zeigt eine perspektivische Ansicht eines Abschnitts der Leitung mit einer alternativen Ausführungsform eines Schirmelements;

Fig. 11

zeigt eine Ansicht von oben auf das erste Teil des Schirmelements;

Fig. 12

zeigt eine Seitenansicht auf einen Schnitt durch das erste Teil des Schirmelements;

Fig. 13

zeigt einen Schnitt durch ein zweites Teil des Schirmelements;

Fig. 14

zeigt einen Ausschnitt eines Schnitts durch ein zweites Ausführungsbeispiel eines Gehäuses des ersten Steckverbindungsteils;

Fig. 15

zeigt eine perspektivische Ansicht eines Ausschnitts des zweiten Steckverbindungsteils im Bereich des Pilotkontakts;

Fig. 16

zeigt einen Ausschnitt eines Schnitts durch das Gehäuse des ersten Steckverbindungsteils;

Fig. 17

zeigt eine perspektivische Ansicht eines ersten Ausführungsbeispiels eines Steckverbindungselements;

Fig. 18

zeigt eine perspektivische Ansicht eines zweiten Ausführungsbeispiels eines Steckverbindungselements;

Fig. 19

zeigt ein Ausführungsbeispiel eines Steckverbindungselements für einen Winkelstecker; und

Fig. 20

zeigt ein weiteres Ausführungsbeispiel eines Steckverbindungselements für einen Winkelstecker.

Further advantages, features and details of the invention emerge from the subclaims and the following description, in which several exemplary embodiments are described in detail with reference to the drawings. The features mentioned in the claims and in the description can each be essential to the invention individually or in any combination.

Fig. 1

shows a perspective view of a first embodiment of a connector system;

Fig. 2

shows a perspective view of a second embodiment of a connector system;

Fig. 3

shows a perspective view of a third embodiment of a connector system;

Fig. 4

shows a side view of the connector system of FIG Fig. 3 ;

Fig. 5

shows a perspective view of the connector system in a partially separated state;

Fig. 6

shows a perspective view of an enlarged section in the area of the locking means;

Fig. 7

shows an enlarged section in the area of the locking elements;

Fig. 8

shows a section of a section through the housing of the first connector part;

Fig. 9

shows a perspective view of a portion of the line with the insulation offset at the end of the conductor;

Fig. 10

shows a perspective view of a portion of the line with an alternative embodiment of a shield element;

Fig. 11

shows a view from above of the first part of the screen element;

Fig. 12

shows a side view of a section through the first part of the screen element;

Fig. 13

shows a section through a second part of the screen element;

Fig. 14

shows a section of a section through a second embodiment of a housing of the first connector part;

Fig. 15

shows a perspective view of a section of the second connector part in the area of the pilot contact;

Fig. 16

shows a section of a section through the housing of the first connector part;

Fig. 17

shows a perspective view of a first embodiment of a connector element;

Fig. 18

shows a perspective view of a second embodiment of a connector element;

Fig. 19

shows an embodiment of a connector for an angled connector; and

Fig. 20

shows a further embodiment of a connector for an angled connector.

The Fig. 1 shows a perspective view of a first embodiment of a connector system 1 with a first connector part 2 and a second connector part 4 in the not yet plugged-in state. The first plug-in connection part 2 is designed as a three-pole plug, with which three single-pole electrical lines 6, each designed as a cable with a cable jacket, can be electrically connected to the second plug-in connection part 4. For this purpose, for example, in a housing 48 Fig. 17 and 18 Shown socket-shaped contact members shown, which can be brought into electrical contact when the first and second connector parts 2, 4 are plugged together with preferably cylindrical contact pins 22 in the second connector part 4.

In the exemplary embodiment, the second plug-in connection part 4 is arranged on a housing wall 8 of an assembly, for example on an alternator or on an electric motor. The first and second plug connection parts 2, 4 each have three load contacts 12, 14, 16, which serve for electrical connection of the electrical lines 6, and a pilot contact 18 of which in the Fig. 1 only the associated pilot contact of the second connector part 4 is partially visible.

The two plug-in connection parts 2, 4 also have components 20 for guiding the first plug-in connection part 2 when plugging together with the second plug-in connection part 4, whereby on the side of the second plug-in connection part 4 an at least sectionally cylindrical pin 24 is arranged as a guide component, which on its first plug-in connection part 2 facing end is tapered, in particular is rounded and / or has a conical surface.

Between the components 20 for the guide and the pilot contact 18, the two connector parts 2, 4 have components for locking the first connector part 2 on the second connector part 4, which in the exemplary embodiment has a connecting screw 26 on the side of the first plug-in connection part 2 and a threaded bore 28 on the side of the second plug-in connection part 4. The second plug-in connection part 4 is preferably releasably attachable to the housing wall 8 by means of a connecting strip 30, and is screwed on in the exemplary embodiment.

In the first embodiment of the Fig. 1 the first plug-in connection part 2 has a line guide running parallel to the plug-in direction. The Fig. 2 shows a second exemplary embodiment of a plug-in connection system 1, in which the first plug-in connection part 102 has an angled line routing of the electrical lines 6, in particular a line routing angled by 90 °. The second connector part 4 is identical to the second connector part 4 of the first embodiment of the Fig. 1 constructed, in particular, both a first connector part 2 with parallel to the direction of the line, as in the Fig. 1 shown, as well as a first plug-in connection part 102 with angled to the plug-in direction of the cable routing with the same second plug-in connection part 4.

The components of a first component group with components for the pilot contact 18 and the components for the three load contacts 12, 14, 16 are independent of a number of poles of the first plug connection part 102 determined by the number of load contacts 12, 14, 16, in particular the pilot contact 18 always identical, regardless of whether it is a one, two or n-pin connector; the same applies to the load contacts 12, 14, 16 in the straight version and the load contacts 212, 214 in the angled version ( Fig. 3 ). The components 20 for guiding when plugging together and the components 26 for fixing the first plug connection part 2 to the second plug connection part 4 are also formed independently of the number of poles.

The housing 48 of the first plug-in connection part 2 has a number of receiving chambers for the components of the load contacts 12, 14, 16, which number corresponds to the number of poles determined by the number of load contacts 12, 14, 16. The components of the load contacts 12, 14, 16 arranged within the housing 48 are constructed identically. The components 20 for guidance when plugging together, as well as the components of the pilot contact 18 and the fixing 26 are between the in the Fig. 1 and 2 arranged first load contact 12 and the middle load contact 14 arranged on the left. In one embodiment, this arrangement is retained even with two-pole or multi-pole plug connections, in particular the arrangement of the components 20 for the guide, the pilot contact 18 and the connecting means 26 is always between two adjacent load contacts 12, 14 regardless of the number of poles of the plug connection system 1 arranged.

The second plug-in connection part 4 has a sleeve-shaped section 32 projecting beyond the contact pin 22 in the axial direction, which can serve to further guide the first plug-in connection part 2, 102 when it is plugged together with the second plug-in connection part 4. The sleeve-shaped section 32 has an opening 34 which extends in the plug-in direction and which is open in the direction of the first plug-in connection part 2, 102 and, in the exemplary embodiment, is formed by a slot. When plugged together, the first plug-in connection part 2, 102 projects with its housing 48 beyond an end 36 of the opening 34 facing the second plug-in connection part 4. This is followed by an annular and preferably cylindrical or conical section 38, to which a sealant can be brought into contact when plugged together and thereby seals the contact elements of the plug connection system 1. On its inside, the sleeve-shaped section 32 preferably has guide means 40 formed in one piece, which in the exemplary embodiment extend in the axial direction extend and are designed as webs, and by means of which a further guidance and / or polarity reversal security is ensured when plugging together. In one embodiment, the guide means or webs and the associated cutouts can form a customer-specific, selectable coding of the plug connection system 1.

The Fig. 3 shows a perspective view of a third exemplary embodiment of a connector system 201 with a two-pin first connector part 202 and a two-pin second connector part 204, the first connector part 202 being an angled connector in which the line runs at right angles to the direction of insertion.

The Fig. 4 shows a side view of the connector system 201 of FIG Fig. 3 , The Fig. 5 shows in one opposite the 3 and 4 An enlarged view is a perspective view of the connector system 201 in a partially separated state.

The first plug-in connection part 202 has a bow-shaped actuating element 242, with which the two plug-in connection parts 202, 204 emerge from the in the 3 and 4 fully assembled condition in one in the Fig. 5 The state shown can be converted, in which the pilot contact 218 is either already disconnected, or in any case when the actuating element 242 has been completely transferred to the one shown in FIGS 3 and 4 is separated by 90 ° rotated position, the load contacts 212, 214 but are still electrically connected. The actuating element 242 can be pivoted about an axle pin 244, which is preferably formed in one piece by the first plug connection part 202, whereupon a control curve 246, which is introduced into the actuating element 242, for example by a groove, is moved along a guide pin 250 arranged on the second plug connection part 204 in such a way that the first connector part 202 lifts from the second connector part 204.

When the actuator 242 is opposite the position in the Fig. 3 Assumes a position rotated by 90 °, the pilot contact 218 of the first connector element 202 is no longer in electrical connection with the pilot contact of the second connector element 204, whereas the load contacts 212, 214 of the first connector element 202 are still in electrical connection with the load contacts of the second connector element 204 ,

The actuating element 242 can in its 3 and 4 illustrated first end position and / or releasably latchable in a second end position rotated by 90 °. Due to the lever action of the actuating element 242, only a small actuating force is required both when opening and when closing the connection between the first and the second plug connection part 202, 204. This is particularly advantageous at high temperatures and / or dirty environmental conditions.

The first plug connection part 202 and the second plug connection part 204 have corresponding latching means 252, 254, wherein in the exemplary embodiment the latching means 252 of the first plug connection part 202 is formed by a recess in a housing wall into which the associated latching means 254 of the second plug connection part 204 engages when plugged on and locked with the opening. For this purpose, the latching means 254 of the second plug connection part 204 has a run-on slope, by means of which the latching means 254 is deflected when it is plugged together and snaps back as soon as the latching means 254 engages in the opening in the first plug connection part 202.

After transferring the first plug connection part 202 from the into the 3 and 4 position shown in the Fig. 5 Position shown or beyond in a position in which the actuating element 242 has been pivoted by 90 °, the locking means 254 of the second connector 204 is in contact with the edge of the opening of the locking means 252 of the first connector 202. This is a complete removal of the first connector part 202 prevented. Only after the latching means 254 has been disengaged from the latching means 252, for example by means of a screwdriver or another suitable tool, which can be inserted into the opening and then rotated, for example, can the first plug connection part 202 be completely removed.

The fact that the actuating element 242 must first be actuated and the pilot contact 218 is thereby disconnected while the load contacts 212, 214 are still connected, and then the latching means 252, 254 are disengaged, for example by means of a tool, alternatively also without tools must be brought before the first connector part 202 can be completely removed, in practice there is a time delay of, for example, at least 0.5 or 1 second. This enables a higher-level control to switch the load contacts 212, 214 off after the pilot contact 218 has been disconnected to signal that the connection is to be disconnected.

Also when plugging together there is the possibility that first the connection of the load contacts 212, 214 is established by plugging in the first plug connection part 202, and the pilot contact 218 is only closed by the subsequent pivoting of the actuating element 242, whereupon a superordinate control line connects the load lines Can put electricity. Thus, both the plugging and the disconnection of the electrical connection of the load contacts 212, 214 can be de-energized take place, whereby the electrical contacts are protected and a permanently reliable electrical connection can be provided.

The Fig. 6 shows a perspective view of an enlarged detail in the area of the latching means 252, 254 in a state in which the first plug connection part 202 is completely plugged together with the second plug connection part 204 and both the load contacts 212, 214 and the pilot contact 218 are closed. The Fig. 7 shows an enlarged detail in the area of the latching elements 252, 254 in a state in which the first plug connection part 202 is detached from the second plug connection part 204 to such an extent that the pilot contact 218 is separated, but the load contacts 212, 214 are still connected.

The latching element 252 of the first plug-in connection part has a first opening section 256, which is slightly larger than a first section 258 of the second latching element 254, but smaller than a second section 260 of the second latching element 254 Fig. 7 Position shown the second section 260 in contact with the housing 48 of the first connector part 2 and blocks a complete removal of the first connector part 202 from the second connector part 204. Only by deflecting the second locking element 254, for example by means of a tool, the second section 260 in Covered with a second, larger than the first opening portion second opening portion 262 of the first locking element 254, which is slightly larger than the second portion 260 of the second locking element 254, so that the first connector part 202 can be removed from the second connector part 204.

The Fig. 8 shows a section of a section through the housing 48 of the first connector part 2 in an area in which the electrical line 6 shown in a view is connected to the first connector part 2. The line 6 is a cable with a Inner conductor 53, which is surrounded by insulation 55, on the outside of which a metallic conductive cable shield 57 is applied. At its end covered by a sleeve-shaped connecting element 78, the inner conductor 53 is provided with an electrical connector element 10 ( Fig. 17 . 18 ) electrically and mechanically connected.

The plug connection part 2, which is a device 11 for electrically connecting the cable shield 57 of the electrical line 6 to the housing 48, furthermore has a three-part fixing element 81, 85, 87 in the exemplary embodiment shown, by means of which the connecting element 78 and thus the inner conductor 53 when Occurrence of a tensile force on the line 6 is immovably fixed in the housing 48 by positive locking. The connecting element 78 is at least in sections sleeve-shaped and mechanically firmly connected to the inner conductor 53 by clamping, in particular pressed to the inner conductor 53. The pressing is carried out with the interposition of two contact plates 72, 74, which also form the contact element of the connector element 10 in one piece.

The connecting element 78 has a flange-like widening 84 at at least one end, which forms a preferably annular annular contact surface 79 for a first part 81 of the fixing element in the direction of the tensile force. The first part 81 of the fixing element is sleeve-shaped and encompasses the connecting element 78 and extends in the direction of an end pointing away from the contact element of the plug-in connecting element 10 beyond the connecting element 78. At its front end, the first part 81 of the fixing element, with the interposition of a radially outwardly extending connecting line 83 for the cable screen 57, is in contact with a second part 85 of the fixing element, which is also sleeve-shaped and accommodates the line 6. At its end opposite the first part 81 the second part 85 has a contact surface for a third part 87 of the fixing element, which forms a positive connection with the housing 48 in the direction of the tensile force.

In the exemplary embodiment, the third part 87 of the fixing element is designed in the form of a clamp, the associated clamp being inserted into an opening 89 ( Fig. 1 ) can be inserted into the housing 48 in an oblique direction and in particular transversely to the plugging direction or to the longitudinal direction of the line 6 and thereby locks the fixing element in the housing 48. When a tensile force occurs on the cable 6, this tensile force is transmitted via the inner conductor 53 to the connecting element 78, which is in a form-fitting contact with the first part 81 of the fixing element, which in turn is in a form-fitting contact with the second part 85, and this in turn in a form-fitting contact on the third part 87, the third part 87 being in positive engagement with the housing 48. As a result, a fixed connection between the line 6 and the housing 48 is provided, which is only based on a positive contact and is independent of frictional forces.

The device 11 is part of a receiving chamber assigned to each pole for a load contact 12, 14, 16, 212, 214 in each embodiment of the housing 48 of the first plug-in connection part 2. The device 11 can be used for straight connectors as well as for the design of the contact elements be the same for angled connectors.

The device 11 also has an intermediate element 91, which can be made of a plastic. The intermediate element 91 can also be referred to as an insulating sleeve. The intermediate element 91 comprises the connecting element 78 at least in sections and projects beyond the connecting element 78 in the direction of the contact element of the plug-in connecting element 10. In the illustrated embodiment, this forms Intermediate element 91 in one piece a sleeve-shaped guide section 75 which, when the first and second plug connection parts 2, 4 are plugged together, abuts the sleeve-shaped section 32 ( Fig. 1 ) of the second connector part 4 comes and is guided.

The device 11 has a spring element 93, with which the connecting element 78 is biased in the housing 48 in the direction of the positive contact with the fixing element, in the exemplary embodiment it is biased in the direction of the first part 81 of the fixing element. The spring element 93 is on the one hand in abutment with a radially outwardly projecting shoulder of the intermediate element 91 and on the other hand in abutment with a radially inwardly projecting shoulder of the housing 48 can be claimed, for example up to 30% compression.

The first part 81 of the fixing element has, in a section between the form-fitting contact on the connecting element 78 and the form-fitting contact on the second part 85 or the connecting line 83 for the cable shield 57, a latching means 95, with which the first part 81 during assembly the device 11 can be locked with the intermediate element 91. In the exemplary embodiment, the latching means 95 is formed by a section with a larger radial dimension, which can engage in a correspondingly shaped recess in the intermediate element 91. The intermediate element 91 can have a slotted section at its end pointing away from the contact element of the plug-in connection element 10, and a stop bevel 97 can be arranged at the end thereof for snapping the first part 81 into place.

The second part 85 of the fixing element protrudes over the end of the end of the fixing element which points away from the contact element of the connector element 10 Housing 48 also, whereby the electrical line 6 is guided. On the inside, near this axial end, a sealing element 99 is arranged between the second part 85 and the line 6, which forms a plurality of sealing surfaces in the axial direction and, in the exemplary embodiment, has the cross-sectional shape of a corrugated hose. The sealing element 99 also provides guidance of the line 6 in the housing 48. In the area of the sealing element 99, the third part 87 of the fixing element is in contact with the inner surface of the housing 48 by a further sealing element 77; the third part 87 can also be referred to as a lock.

The Fig. 9 shows a perspective view of a section of the line 6 with the insulation 55 deposited at the end of the conductor and the inner conductor 53 exposed thereby. In the region of the insulation 55 the cable shield 57 ( Fig. 8 ) electrically contacted by a substantially annular shield element 59. The shield element 59 can be formed from a flat sheet metal part produced by stamping and, in the shaped state, has an annular section with which the shield element 59 can be brought into contact with the line 6 to be connected. In addition, the shield element 59 preferably has radially protruding contact tongues 61 which are distributed uniformly in the circumferential direction and which can be brought into contact with the housing 48 and thereby electrically contact the housing 48. The shield element 59 has slots 63 which extend in the direction of the inner conductor 53 and are preferably arranged uniformly distributed in the circumferential direction, through which the eddy currents occurring in the shield element 59 are reduced.

The Fig. 10 shows a perspective view of a section of the line 6 with an alternative embodiment of a screen element 159, which is formed in several parts. A first part 131 of the screen element 159 can be designed as a stamped / bent part and a continuous axial part Have slot 133 through which the first part 131 is resiliently deformable; the first part 131 can also be referred to as a shield contact. The Fig. 11 shows a top view of the first part 131 and the Fig. 12 a side view of a section through the first part 131. The first part 131 forms a contact element for the cable shield 57 of the line 6. Die Fig. 13 shows a section through a second part 135 of the screen element 159, with which the cable screen 57 can be electrically contacted and in particular an electrically conductive connection between the cable screen 57 and the first part 131 can be established; the second part 135 can also be referred to as a screen crimp.

The Fig. 14 shows a section of a section through a second embodiment of a housing 148 of the first connector part 2. As far as the embodiment of FIG Fig. 8 corresponding features are designated, reference numerals are used, which are by the amount 100 compared to those in the Fig. 8 reference numerals used are increased. In the embodiment of the Fig. 14 is a screen element 159 used, as in the Figures 10 to 13 is shown. The shielding element 159 comprises a third part 137, with which the cable shield 157 of the line 106 is mechanically fixed, in particular crimped; the third part 137 can also be referred to as a support crimp. The third part 137 encloses both the cable shield 157 on the insulation 155 and the outer cable sheath of the line 106. The section of the third part 137, which surrounds the insulation 155 or the cable shield 157, is axially spaced from the section of the third part 137, which surrounds the outer cable jacket. The embodiment of the housing 148 of the Fig. 14 is like the embodiment of the Fig. 8 conical inside. Unlike that Fig. 8 is the housing 148 Fig. 14 the outer shape is also conical, as the wall thickness is almost constant.

The protruding portion, which surrounds the insulation 155 and the cable shield 157, is shortened to a suitable length End of the cable shield 157 folded over and is enclosed by the second part 135 of the shield element 159. The second part 135 is shaped such that its outer edge almost reaches the inner surface of the housing 148. To stiffen the front end of the second part 135, the latter has a stiffening means 139, which in the exemplary embodiment is formed by an annular recess. On the outside, the second part 135 has a preferably peripheral edge section 141, which extends at right angles to the longitudinal axis and is set back from the axial ends of the second part 135 in the exemplary embodiment, the distance to one axial end being smaller than to the opposite other axial end ,

The second part 185 of the fixing element is positively supported on the outer edge in the axial direction; the second part 185 can also be referred to as a sealing sleeve. At the front end of the second part 135 of the screen element 159, the first part 181 of the fixing element is supported in a form-fitting manner in the axial direction, the support of the first part 181 lying radially on the inside opposite the support of the second part 185 of the fixing element; the first part 181 can also be referred to as a spacer sleeve. In the exemplary embodiment, the second part 135 is rotationally symmetrical to its longitudinal axis. By turning the cable shield 157, it is at a defined distance from the main contact.

The first part 131 of the screen element 159 is arranged between the edge section 141 of the second part 135 and the housing 148. In the exemplary embodiment, it consists of a slotted sleeve which, in the undeformed state, has a shape which deviates from the cylindrical shape, in particular is conical. At or near an axial end, the first part 131 has contact tongues 161 or contact lugs, with which the housing 148 can be electrically contacted, on its outer surface, preferably formed in one piece by embossing and preferably distributed uniformly in the circumferential direction. At or near the opposite end that indicates first part 131 on its inside, preferably formed by embossing in one piece and preferably evenly distributed in the circumferential direction, arranged second contact tongues 143 or contact lugs with which the second part 135 of the screen element 159 can be electrically contacted.

In the in the Fig. 14 In the installed state shown, the first part 131 is roughly cylindrical in shape, since the cable of the line 106 with the parts mounted thereon is pushed into the housing 148 during assembly. Due to the restoring force of the first part 131, the latter is in a safe electrical system on the one hand on the inner surface of the housing 148 and on the other hand on the second part 135 of the screen element 159 , in particular for contacting the edge section 141 of the second part 135, by which it is ensured that the first part 131 is axially in a defined position in the housing 148, in particular in a defined position with respect to the second part 135 and thus with respect to the line 106 The stop means can be formed by the second contact tongues 143.

The arrangement of three contact tongues 161 and three second contact tongues 143 in each case ensures that the first part 131 bears radially outwards against the housing 148 and radially inwards. A radially inner second contact tongue 143 is arranged for each radially outer contact tongue 161, the connecting line between associated contact tongues 161, 143 running parallel to the longitudinal axis of the line 106 in order to ensure a corresponding current flow direction for the cable shield current. The small distance between the sleeve-shaped first part 131 and the housing 148 ensures a good capacitive coupling of the shield contact.

The outer diameter of the second part 135 in the region of the edge section 141 is only slightly less than the clear width of the housing 148 minus the thickness of the first part 131, so that there is a play of less than 2 mm, in particular less than 1.2, in this region mm and preferably less than 0.8 mm; in the exemplary embodiment, the distance is approximately 0.5 mm. In the event of a radial movement of the line 106, in particular of the cable with the parts attached to it, i. H. also with the second part 135, the first part 131 also moves at the axial position at which the first part 131 electrically contacts the second part 135, the movement due to the abutment of the first part 131 on the inside of the housing 148 Experiences attack.

At its opposite end, however, the first part 131 does not experience any movement in the radial direction, because the first part 131 is centered by the contact tongues 161 inside the housing 148. This results in a pivoting movement of the first part 131, which has the advantage that a relative movement takes place at the contact points, as a result of which the contact surfaces are cleaned. The end section of the first part 131, with which the first part 131 is in connection with the second part 135, is at an angle of more than 0.2 ° and less than 6 °, in particular more than 0.5 °, with respect to the adjacent section and bent less than 4 °, and preferably more than 0.5 ° and less than 2.5 °, so that this end section does not experience any bending stress when the first part 131 is pivoted, which would be disadvantageous when vibrations occur. The length of the bent section is less than 30% of the length of the first part 131, in particular less than 20% and preferably less than 15%. In the exemplary embodiment, the length of the bent section is up to ± 25% equal to the length of the second contact tongues 143.

The Fig. 15 shows a perspective view of a section of the second plug-in connection part 4 in the area of the pilot contact 18. An electrically conductive, loosely placed sleeve-shaped section 64 on the plug-in unit for the pilot contact 18 has at its end facing the terminal strip 30 a flange-like widening 66, to which one of the connecting strip 30, preferably a one-piece contact lug 65, can be brought into contact-making contact, the contact lug 65 being able to be deflected resiliently with respect to the connecting strip 30 and fixing the sleeve-shaped section 64 to the housing wall 8 and ensuring the shield connection. In one embodiment, the contact lugs 65 are hold-downs for the conductive sleeve, which is bent at the end, with flange-like widening 66, which places the shield connection on the potential of the unit.

The Fig. 16 shows a section of a section through the housing 48 of the first connector part 2 and the housing wall 8 of the assembly with the second connector element 4 in the assembled state. A seal 69 is arranged between the sleeve-shaped section 32 of the second plug-in connection element 4 and the housing 48 of the first plug-in connection element 2, in particular in contact with the ring-shaped section 38 ( Fig. 1 ) of the sleeve-shaped section 32 on the one hand and the housing 48 on the other. The guide section 75 of the first plug connection element 2 projects in the direction of the second plug connection element 4 beyond the contact elements of the first plug connection element 2, so that they are arranged in the first plug connection element 2 so that they cannot be touched. A dome 67, which is preferably formed in one piece by the connection strip 30, is in contact-making contact with the housing 48 of the first plug-in connection element 2. In one embodiment, the connection strip 30 thus forms a form-fitting counterhold for the housing 48 in the area of the passage of the load contacts 12, 14, 16.

The Fig. 17 shows a perspective view of a first embodiment of a connector element 10 for use in the first connector part 2 described above. The connector element 10 has two contact plates 72, 74 formed by shaped electrically conductive sheet metal strips, each of which has a connection section 76, which is shown in FIG Fig. 17 is covered by the sleeve-shaped connecting element 78, for the electrical connection of the connector element 10 to the electrical line 6. Furthermore, the contact plates 72, 74 have a contact section 82, for a releasable electrical connection of the connector element 10 to a contact element of the second connector element 4. Furthermore the contact plates 72, 74 have a compensation section 80 arranged between the connection section 76 and the contact section 82 for an elastic deflection of the contact section 82 with respect to the connection section 76.

In the area of the connection section 76, the two contact plates 72, 74 are bent in the shape of a part circle, in particular each approximately semi-circular, and are fixed in the position shown by the sleeve 78. The connecting element 78 has at its end facing the contact section 82 a support element 84 formed by a flange-like widening, by means of which the connecting element 78 can be supported on a counter element. As described above, the connecting element and thus the line 6 can thus be fixed in the housing 48 of the first plug-in connecting element 2 when a tensile force occurs; As a result, tensile forces or, for example, vibrations are not passed on to the contact section 82, as a result of which the electrical connection is particularly reliable.

The line 6 to be connected, which is to be inserted in the connection section 76, is permanently securely connected to the plug-in connection element 10 by crimping the sleeve 78, in particular by forming a hexagon. The support element 84 causes those that occur during crimping Forces and / or deformations are kept away from the compensation section 80. For this purpose, it is particularly advantageous if the support element 84 is also preceded by a first widening section 73, so that the connecting element 78 has a widening in two or more stages.

In the compensating section 80, the two contact plates 72, 74 are each bent in a meandering manner, starting from the connecting section 76, the first contact plate 72 first forming a U-shaped loop and then in the axial direction, the second contact plate 74 being a substantially identically dimensioned U-shaped loop forms. The two contact plates 72, 74 then extend further into the contact section 82. At the bending points of the meandering loops, the two contact plates 72, 74 each have at least one recess 86, through which the strip width of the contact plate 72, 74 is reduced and the bending stiffness is thereby reduced. In the two parallel legs 88 of the meandering loop, the two contact plates 72, 74 have tool engagement surfaces 90, which in the exemplary embodiment are formed by holes by means of which the contact plates 72, 74 can be fixed when the loops are bent; alternatively or in addition, the holes can also be provided to reduce the bending stiffness. In addition, the contact plates 72, 74 have, in the region of the parallel legs 88, stop means 92 which, in the exemplary embodiment, are formed by lugs formed in one piece by the contact plates 72, 74 and bent by 90 °.

In the contact section 82, the two contact plates 72, 74 are bent in a V-shape and thereby form an angle between 60 and 150 °, preferably between 75 and 120 °. As an alternative to the V-shape, the contact plates 72, 74 have a bending shape which deviates from the cross-sectional contour of the contact element of the second plug-in connection part 4, so that one or preferably two line contacts per contact plate 72, 74 result.

A foreign spring 94 is placed on the contact plates 72, 74 bent in this way, with which the contact plates 72, 74 can be held in contact-making contact with the contact element of the assigned second plug connection part 4. The foreign spring 94 has an annular section 96 which limits the maximum widening of the contact plates 72, 74 in the contact section 82. Spring arms 98 protrude from the annular section 96 in the axial direction, which in the undeformed initial state are bent or kinked inwards and exert the contact force. In the exemplary embodiment, two spring arms 98 are arranged on opposite sides.

Offset by 90 ° to the spring arms 98, the external spring 94 has guide means 68, which are bent radially inwards at or near their free end and thereby engage in a gap formed between the two contact plates 72, 74 and thereby the external spring 94 when plugged on lead to the contact section 82. At the transition from the contact section 82 to the compensating section 80, the two contact plates 72, 74 form a stop means 70 for pushing on the foreign spring 94 by means of a radial expansion.

The Fig. 18 shows a perspective view of a second embodiment of a connector element 110 for use in the first connector part 2 described above. In the contact section, the first and second contact plates 172, 174 have outwardly projecting lugs 111, 113, which together form a guide and a stop for form the attachment of the foreign spring 194. The annular section 115 of the foreign spring 194 is arranged at an end facing the second plug connection part 4. Guide means 117 protrude from the annular section 115 on opposite sides and are inserted between the two lugs 111, 113 when the foreign spring 194 is fitted. The guide means 117 have a rounded or beveled end section. The guide means 117 alternatively or additionally form spacers which prevent the two contact plates 172, 174 from being excessively compressed.

From the annular section 115, latching means 119 protrude on opposite sides, which cooperate with corresponding latching means 121 of the contact plates 172, 174. In the exemplary embodiment, the latching means 119 of the foreign spring 194 have an opening or recess into which the latching means 121, for example a knob, formed integrally by embossing of the contact plates 172, 174, for example, engage.

The end of the annular section 115 is essentially flush with the contact plates 172, 174. The contact plates 172, 174 form an insertion slope 125 for the contact pin 22 ( Fig. 1 ). Due to its shape, each of the contact plates 172, 174 has two line contacts 123 for the contact-making contact with the contact pin 22.

The connecting element 178 has an adjusting means 127 in the region of the connecting section, in particular at its end on the connecting section side, by means of which the position of the connecting element in relation to the contact plates 172, 174 can be adjusted. The adjustment means 127 can be formed by a recess into which a corresponding position fixation is embossed immediately after the contact sheets 172, 174 have been pushed in, so that the connecting element 178 is held on the contact sheets 172, 174 only in a predeterminable angular position and during further assembly protection against rotation is guaranteed.

The Fig. 19 shows an embodiment of a connector element 210 for an angled plug. In contrast to the connector 10 of the Fig. 17 one of the contact plates 274 is only cranked and does not have to form a complete meander loop. Inserting one Pin 22 ( Fig. 1 ) takes place transversely to the longitudinal direction of the plug connection element 210, which is determined by the sequential arrangement of the connection section 276, compensation section 280 and contact section 282. The foreign spring 294 is produced as a stamped / bent part and is placed on the contact section 282.

The Fig. 20 shows a further embodiment of a connector element 310 for an angled plug. The foreign spring 394 has two legs, each with at least one locking means 319, which interact with corresponding locking means 321 of the contact plates 372, 374. In the exemplary embodiment, the latching means 319 of the foreign spring 394 have an opening or recess into which the latching means 321, which are formed, for example, by stamping in one piece from the contact plates 372, 374, engage in a latching manner.

The contact plates 372, 374 form at the end an insertion bevel 325 for the contact pin 22 of the second plug-in connection part 4. Each of the contact plates 372, 374 has two line contacts 323 due to its shape for the contact-making contact on the contact pin 22.

At least one of the contact plates 372, 374 has a stop means 329, which is preferably formed in one piece, by means of which the contact plates 372, 374 can only be inserted up to a corresponding stop in the connecting element 378; the corresponding stop can be formed by the transition from the support element 384 to the first widened section 373 on the inside of the connecting element 378.

For all of the plug-in connection elements shown, a secure electrical connection is provided by providing a total of four linear electrical contacts. The foreign spring 94, 194, 294, 394 creates a frictional contact with the corresponding one Contact member of the assigned second connector part 4 guaranteed. The compensation section 80, 280 ensures a secure contact of the contact section 82, 282 with all four contact lines, in particular a compensation of a parallel offset or an oblique position of the contact member to be contacted is ensured. The high current carrying capacity is provided by the direct contact of the contact plates 72, 74 having a large cross-sectional area on the contact pin 22; the required flexibility of the contact plates 72, 74 is provided by the compensation section 80, 280, which is formed separately from the contact point and the connection to the line 6.

Claims (8)

1. Combination of a cable and a device (11) for electrically connecting the cable to a housing (148) in which a shielded element (159) is arranged for electrically contacting a cable shield (157) and for electrically connecting the cable shield (157) to the housing (148), wherein the shielded element (159) is multi-part and a first part (131) of the shielded element (159) is in electrically connecting contact with the housing (148), and wherein the first part (131) is electro-conductively connected to the cable shield (157) via at least one further part (135, 137) of the shielded element (159), characterised in that the shielded element (159) has, as a first further part, a third part (137) arranged in the housing (148), which part has at least one first sleeve-shaped portion, the inside of which encloses the insulation (155) of the cable with the cable shield (157) of the third part (137) lying thereon, and in that a second part (135) of the shielded element (159), which is arranged in the housing (148) and which electro-conductively connects the first part (131) of the shielded element (159) to the cable shield (157), is applied as a second further part to the outside of the first sleeve-shaped portion of the third part (137) with interposition of the cable shield (157) which is folded around the free end of the first sleeve-shaped portion and as a result the cable shield (157) is electrically contacted.
2. Combination according to claim 1, characterised in that the first part (131) is substantially sleeve-shaped and resiliently deformable in the circumferential direction, in particular has a continuous slot in the longitudinal direction.
3. Combination according to claim 1 or 2, characterised in that the first part (131) has at least one contact means (161) on its outside, which can be held in electrically connecting contact with the housing (148) by a resilient deformation of the first part (131).
4. Combination according to one of the preceding claims, characterised in that the first part (131) has at least one further contact means (143) on its inside, which can be held in electrically connecting contact with a further part (135) of the shielded element (159).
5. Combination according to one of the preceding claims, characterised in that the second part (135) of the shielded element (159) has a sleeve-shaped portion with which the second part (135) can be crimped onto the cable shield (157).
6. Combination according to one of the preceding claims, characterised in that the second part (135) has an edge portion (141) protruding with a radial directional component from a longitudinal axis of the second part (135), with which edge portion the second part (135) can be brought into electrically connecting contact with the first part (131).
7. Combination according to one of the preceding claims, characterised in that the third part (137) has a second sleeve-shaped portion with which the third part (137) can enclose a sheath of the cable.
8. Combination according to one of the preceding claims, characterised in that a force can be transmitted in the axial direction by the shielded element (159) inside the housing (148), by means of which force a connecting element (178), which can be firmly connected mechanically to an inner conductor (153) of the cable, and therefore the inner conductor (153) of the cable is immovably fastened in the housing (48) by positive locking if a tensile force arises.

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