EP3767750A1 - Electric connector, insulated safety element and method for mounting an electrical connector - Google Patents

Abstract

The invention relates to an electrical connector (1) having an inner conductor contact element (3), an outer conductor contact element (6) and an insulating protection element (9) arranged between the inner conductor contact element (3) and the outer conductor contact element (6). The outer conductor contact element (6) has a mounting recess (10) to provide an assembly access (M) for fastening the inner conductor contact element (3) to an inner conductor (4) of an electrical cable (2). It is provided that the insulating protection element (9) is between an assembly position in which the assembly access (M) is released through the assembly recess (10) to the inner conductor contact element (3) and an insulating protection position in which the assembly access (M) to the inner conductor contact element (3) is blocked by the insulating protection element (9), is displaceable.

Description

The invention relates to an electrical connector having an inner conductor contact element, an outer conductor contact element and an insulating protection element arranged between the inner conductor contact element and the outer conductor contact element, according to the preamble of claim 1.

The invention also relates to an insulating protection element for an electrical connector according to the preamble of claim 14.

The invention also relates to a method for assembling an electrical plug connector which has an inner conductor contact element, an outer conductor contact element and an insulating protection element arranged between the outer conductor contact element and the inner conductor contact element.

As part of the assembly of an electrical connector, the inner conductor contact elements of the connector must be connected to the inner conductors of an electrical cable assigned to them. In the case of shielded electrical plug-in connectors, an outer conductor contact element is also provided which surrounds the inner conductor contact elements and has to be connected to an outer conductor shield of the electrical cable.

As a rule, the outer conductor shield of the electrical cable is designed as an outer conductor shield braid made of several individual wires that are intertwined with one another. In the case of inadequate design and routing of the outer conductor shield braid or generally when connecting the outer conductor shield braid to the outer conductor contact element of the electrical plug connector, individual wires of the braid may separate. These individual wires can finally establish an electrical connection or a short circuit between the inner conductor contact element and the outer conductor contact element.

Regardless of the area of application of the electrical connector, a short circuit between the inner conductor (s) and the outer conductor due to protruding individual wires of a braided cable shield has been a problem that has been known for a long time. In order to reliably prevent contact with the inner conductor contact elements by protruding individual wires of the outer conductor shielding braid of an electrical cable, insulating parts or insulating protection elements are generally used between the inner conductor contact elements and arranged the outer conductor contact element. This can be, for example, electrically insulating plastic rings or insulating housings of the electrical plug connector with individual receptacles for receiving the inner conductor contact elements.

For the production of electrical plug connectors, in addition to process reliability, a particularly economical production process and in particular also a short process time are often required, in particular in order to be able to provide mass production. In this regard, a construction of the electrical connector in which an insulating part or insulating protection element is arranged between the inner conductor contact elements and the outer conductor contact element turns out to be comparatively impractical, since the insulating protection element limits the possibilities for attaching the inner conductor contact element to the inner conductors of the electrical cable. As a rule, an insulating protection element is used that ensures free assembly access through assembly recesses in the outer conductor contact element up to the inner conductor contact elements. Through the assembly access, for example assembly tools, in particular screwdrivers, can then be passed through the outer conductor contact element for fastening the inner conductor contact element to the inner conductor of the electrical cable.

However, through the assembly access there is again the possibility of a short circuit due to protruding individual wires of the outer conductor shielding braid of the electrical cable. The possibility of a short circuit is reduced by the aforementioned insulating protection element, but it is not completely excluded. This is particularly unacceptable for safety-critical applications, for example for high-voltage plug connectors, or for the transmission of critical data signals, for example in the context of autonomous operation of a motor vehicle.

To solve the problem, for example, in the EP 0 665 608 A2 proposed to coat a screw provided for connecting an inner conductor contact element to an inner conductor of the electrical cable with an electrically insulating material in the region of the screw tip, which is connected to the inner conductor of the electrical cable. Even if a single wire of the outer conductor shielding braid of the cable makes electrical contact with the screw head through the assembly access, a short circuit with the inner conductor of the cable can still not occur.

The coating of the screw is, however, comparatively complex and expensive. Furthermore, such a solution, in particular for safety-critical power cables or high-voltage cables, can occasionally still not be sufficiently safe.

In view of the known state of the art, the object of the present invention is to provide an electrical connector which is particularly suitable for safety-critical applications and inexpensive mass production.

The present invention is also based on the object of providing an improved insulating protection element that can be used in an electrical connector in order to prevent a short circuit between an inner conductor contact element and an outer conductor contact element, preferably without significantly increasing the assembly effort for the electrical connector.

Finally, it is also the object of the invention to provide a method for assembling an electrical plug connector which can be advantageously suitable in particular for producing a plug connector suitable for safety-critical applications in the context of mass production.

The object is achieved for the electrical connector with the features listed in claim 1. With regard to the insulating protection element, the object is achieved by the features of claim 14. With regard to the method, the object is achieved by the features of claim 15.

The dependent claims and the features described below relate to advantageous embodiments and variants of the invention.

An electrical connector is provided, having (at least) one inner conductor contact element, an outer conductor contact element and an insulating protection element arranged between the inner conductor contact element and the outer conductor contact element. The outer conductor contact element has (at least) one assembly recess for providing (at least) one assembly access for fastening the inner conductor contact element to an inner conductor of an electrical cable.

In principle, any connector that has any number of inner conductor contact elements can be provided within the scope of the invention. For example, an electrical connector within the scope of the invention can have exactly one inner conductor contact element or more inner conductor contact elements, for example two inner conductor contact elements or more inner conductor contact elements, three inner conductor contact elements or more inner conductor contact elements, four inner conductor contact elements or even more inner conductor contact elements. An electrical connector with exactly two inner conductor contact elements is preferably provided.

If an electrical connector with only one inner conductor contact element is provided, this can preferably be designed as a coaxial connector.

The electrical connector is preferably designed as a connector for power transmission or for supplying electrical assemblies. The connector can be designed as a low-voltage connector or as a high-voltage connector (for supply voltages greater than 60 V). The electrical connector can, for example, be advantageously well suited for the transmission of currents at voltages of less than one volt or else of more than 1,000 volts, for example also at voltages from 5 volts to 500 volts, preferably 12 volts to 400 volts, particularly preferably 24 volts to 230 volts, and very particularly preferably 48 volts to 110 volts, for example also 60 volts. The connector can be well suited for the transmission of direct current as well as alternating current.

The electrical connector is particularly preferably designed as a connector for mobile radio technology, for example for supplying an active mobile radio antenna and / or a so-called remote radio unit, or for vehicle technology, for example for an electric vehicle.

The term “vehicle” describes any means of transportation, in particular vehicles on land, on water or in the air, including spacecraft.

An electrical connector can be a plug, a built-in plug, a socket, a coupling or an adapter. The term "plug connector" used in the context of the invention is representative of all variants.

The assembly access for fastening the inner conductor contact element to the inner conductor of the electrical cable can in particular be designed for inserting or passing through an assembly tool, for example a screwdriver for fastening a screw or a pressing tool.

According to the invention it is provided that the insulating protection element can be displaced between an assembly position in which the assembly access through the assembly recess to the inner conductor contact element is released, and an insulating protection position in which the assembly access to the inner conductor contact element is blocked by the insulating protection element.

According to the invention, insulation protection against short circuits can thus advantageously be provided between an inner conductor contact element of an electrical connector or an inner conductor of an electrical cable and an outer conductor contact element of the electrical connector or an outer conductor shield of the electrical cable.

In an advantageous manner, an insulating protection element can be provided which can be preassembled between the outer conductor contact element and the inner conductor contact element before the inner conductor contact element is attached to an associated inner conductor of the electrical cable.

Due to the possibility of moving the insulating protection element after the at least one inner conductor contact element has been attached to the respective inner conductor of the cable, the assembly access can be blocked, so that undesirably protruding individual wires of an outer conductor shield braid of the cable cannot penetrate through the assembly access to the inner conductor contact element or the inner conductor. A short circuit due to protruding individual wires can thus be practically excluded , which is why a connector according to the invention can be particularly suitable for safety-critical applications.

At the same time, a cost-effective assembly with a short process time can be maintained, whereby the electrical connector can be manufactured extremely economically in large numbers in the context of mass production.

In an advantageous development of the invention, it can be provided that the insulating protection element has (at least) one access opening which, in the assembly position, is aligned with the assembly recess such that assembly access to the inner conductor contact element is released through the assembly recess and the access opening.

In the insulating protection position, the access opening can also be aligned with the assembly recess in such a way that the assembly access through the assembly recess to the inner conductor contact element is blocked by a continuous wall of the insulating protection element.

It is thus possible to provide assembly access in the manner of an assembly channel through the outer conductor contact element and the insulating protection element up to the inner conductor contact element.

The access opening and the mounting recess are preferably aligned or coaxially aligned with one another in the mounting position of the insulating protection element.

A corresponding mounting recess is preferably provided in the outer conductor contact element for each inner conductor contact element. If, for example, two inner conductor contact elements are provided, two assembly recesses can preferably also be provided in the outer conductor contact element to provide a respective assembly access.

In principle, however, a mounting recess can also be provided in the outer conductor contact element, which provides a common assembly access for assembling a plurality of inner conductor contact elements. However, the configuration of the outer conductor contact element with one mounting recess per inner conductor contact element is preferred.

When using several inner conductor contact elements, the insulating protection element preferably has one access opening per inner conductor contact element. If, for example, two inner conductor contact elements are provided, two access openings can preferably be formed in the insulating protection element, which are arranged in the assembly position of the insulating protection element to the one or more assembly recesses in the outer conductor contact element that at least one assembly access to the Assembly of one of the two inner conductor contact elements is released, preferably both assembly accesses to both inner conductor contact elements are released at the same time.

If several inner conductor contact elements are provided, the insulating protection element can also have a smaller number of access openings than inner conductor contact elements, for example only a single access opening. The insulating protection element can then, for example, be displaceable between several assembly positions and the insulating protection position. For example, a first assembly position can be provided in which a first assembly access is released through a first assembly recess to a first inner conductor contact element. Furthermore, a second assembly position can be provided in which a second assembly access is released through a second assembly recess to a second inner conductor contact element. However, an embodiment of the invention is preferred, according to which the insulating protection element has precisely one mounting position and one insulating protection position and is only displaceable between these two positions.

The number of inner conductor contact elements preferably corresponds to the number of mounting recesses and the number of access openings.

According to a development of the invention, it can be provided that an insulating part is arranged between the inner conductor contact element and the outer conductor contact element, which has a mounting opening which, together with the mounting recess of the outer conductor contact element, is able to provide assembly access.

In particular, the insulating part can be provided in order to provide (at least) one receptacle for the (at least one) inner conductor contact element in the electrical connector. The insulating part can, for example, be designed as an inner housing shell of the electrical connector.

The insulating part can primarily ensure that no short circuit can occur between the outer conductor contact element and the inner conductor contact element or elements. This primary insulation protection can then be advantageously combined with the insulation protection element according to the invention, after which the assembly access for fastening the inner conductor contact element to the at least one inner conductor of the cable is released or blocked by the insulation protection element. The dimensions of the insulating protection element can be reduced and the structure simplified if the connector additionally has the static or immovable insulating part between the inner conductor contact element (s) and the outer conductor contact element and essentially only the dynamic portion or the movable part of the insulation is provided by the insulating protection element must become.

The insulating part and the insulating protection element are preferably parts that are independent of one another.

According to a development of the invention it can be provided that the electrical connector has a round geometry (or is designed as a round connector), the outer conductor contact element, the inner conductor contact element, the insulating part and / or the insulating protection element having a substantially round cross section, in particular a hollow cylindrical, have round cross-section.

The invention can be particularly well suited for use with round plug connectors, although the construction of the plug connector can in principle be any. For example, rectangular connectors can also be provided, for example flat connectors.

The electrical connector is not restricted to a specific connector type, the invention being particularly suitable for connectors for power transmission and for connectors for high-frequency technology. It can in particular be connectors of the type PL, BNC, TNC, SMBA (FAKRA), SMA, SMB, SMS, SMC, SMP, BMS, HFM (FAKRA-Mini), H-MTD, BMK, Mini-Coax or MATE -AX trade.

The invention is particularly advantageously suitable for plug connectors with inner conductor contact elements with a large cross section for high power transmission. An electrical connector for supplying electrical assemblies with electrical power can thus be provided.

In a development of the invention it can be provided that the insulating protection element in a groove of the outer conductor contact element, in a groove of the inner conductor contact element, in a groove of the insulating part, in a groove formed between the insulating part and the outer conductor contact element and / or in one between the insulating part and the Inner conductor contact element formed groove is guided.

The groove or the corresponding recess in the outer conductor contact element can preferably be designed in such a way that it intersects the assembly recess.

The groove or the corresponding recess in the insulating part can preferably be designed in such a way that it intersects the assembly opening.

The groove or the corresponding recess is particularly preferably formed in a transition region between the outer conductor contact element and the insulating part, since this can be implemented particularly easily in terms of production technology. In particular, however, a groove or a corresponding recess can also be possible only in the outer conductor contact element or only in the insulating part. Even a groove in the inner conductor contact element can be provided.

In a development of the invention it can be provided that the assembly recess of the outer conductor contact element, the access opening of the insulating protection element and / or the assembly opening of the insulating part is designed as a bore or elongated hole.

A bore or an elongated hole can be easily realized in terms of production technology. In principle, however, other geometries can also be provided for the assembly recess, the access opening and / or the assembly opening, in particular also a rectangular geometry.

The assembly recess of the outer conductor contact element is particularly preferably designed as an elongated hole or rectangular recess.

The access opening of the insulating protection element and the assembly opening of the optional insulating part are particularly preferably designed as a bore.

In an advantageous development of the invention it can be provided that the inner conductor of the cable is fastened to the inner conductor contact element by means of a screw. The assembly access preferably runs in such a way that the screw can be actuated by inserting an assembly tool into the assembly access

The screw can be viewed as part of the electrical connector within the scope of the invention.

A metallic screw is preferably provided.

In an advantageous development of the invention it can be provided that the screw is completely covered by the insulating protection element in the insulating protection position of the insulating protection element.

This makes it possible to provide particularly reliable insulation protection against short circuits.

In a further development of the invention it can be provided that the diameter of a screw head of the screw is larger than the diameter of the access opening of the insulating protection element.

If the diameter of the screw head of the screw is greater than the diameter of the access opening of the insulating protection element, for example greater than the diameter of a hole in the insulating protection element, inadvertent loss of the screw through the access opening in a pre-assembled delivery condition can be prevented in an advantageous manner.

In particular, the diameter of the access opening of the insulating protection element can be larger than the diameter of the assembly tool and smaller than the diameter of the screw head. In this way, the assembly tool can be passed through the access opening, but at the same time a screw that has already been inserted cannot be lost through the access opening of the insulating protection element.

In an advantageous development of the invention it can be provided that the insulating protection element has latching means for latching with a corresponding latching element of the outer conductor contact element, the inner conductor contact element and / or the insulating part in order to latch the insulating protection element in the assembly position and / or in the insulating protection position.

The insulating protection element can preferably be latched at least in the insulating protection position. Particularly preferably, however, the insulating protection element can be latched both in the assembly position and in the insulating protection position.

The latching is preferably carried out with the insulating part or with another housing component of the electrical connector.

Provision can be made for a latching lug or a pin formed laterally on the insulating protection element to be guided over a rail guide with one or two latching recesses in the mounting recess of the outer conductor contact element. However, the locking lug or the pin is preferably guided in a corresponding rail guide with one or two locking recesses in the insulating part.

Axial catches or axially extending catch means can be provided in the insulating protection element, but also radially running catch means. Axial locking means are preferably provided.

The latching means, for example latching lugs, of the insulating protection element can for example be formed on an elastic spring arm of the insulating protection element, for example at a free end of the spring arm or in the middle (or in a central section) of a spring arm connected on both sides.

The spring arm can be implemented particularly advantageously by means of an elongated hole or one or more slots along the circumference of the insulating protection element.

The deformability or elasticity of the spring arm can be selected such that the spring arm provides sufficient holding force for the latching and can bend sufficiently reversibly during the latching or during the releasing of the latching without undergoing (irreversible) plastic deformation.

The spring mechanism, in particular based on a spring arm, can serve to only deliberately trigger a displacement of the insulating protection element from the insulating protection position to the assembly position (or vice versa). The spring mechanism can be defined by the material of the insulating protection element and by the geometry of the insulating part and the outer conductor contact element. The interaction between the insulating part, the outer conductor contact element and the insulating protective element can be coordinated in order to set the force required to move the insulating protective element (based on the assembly position and / or insulating protective position).

In an advantageous development of the invention, it can be provided that the insulating protection element is partially ring-shaped or ring-shaped, the insulating protection element being able to be displaced rotationally and / or axially between the mounting position and the insulating protection position relative to the longitudinal axis of the electrical connector.

The insulating protection element is particularly preferably designed in the form of a partial ring or ring and is rotatable relative to the longitudinal axis of the electrical connector. The movement of the insulating protection element between the mounting position and the insulating protection position can therefore take place by a rotary movement about the central axis of the connector. In principle, however, an axial displacement can also be provided.

In principle, the displacement of the insulating protection element between the mounting position and the insulating protection position can even have a rotary or radial as well as an axial component. For example, a link guide for guiding a link block of the insulating protection element in the electrical connector, for example in the insulating part or the outer conductor contact element, can be provided for such a movement.

The use of a partially ring-shaped or ring-shaped insulating protection element can be particularly well suited for use with an electrical connector with a round geometry.

Several insulating protection elements (partially ring-shaped, ring-shaped or plate-shaped) can also be provided within the scope of the invention, for example one insulating protection element for each inner conductor contact element or for each screw for fastening the inner conductor contact element. In particular, a respective partially annular insulating protective element or a respective (to be described below) plate-shaped insulating protective element can then be provided for each inner conductor contact element or for each screw provided for fastening the inner conductor contact elements.

As indicated above, in one embodiment of the invention it can also be provided that the insulating protection element is designed in the form of a plate, the insulating protection element based on the The longitudinal axis of the electrical connector is axially displaceable between the mounting position and the insulating protection position.

A plate-shaped insulating protection element can be particularly well suited for use with an electrical plug connector with a rectangular, in particular flat, geometry.

In a further development of the invention it can be provided that the insulating protection element has at least one guide means, in particular a radially or axially protruding lug or a web, in order to be able to move the insulating protection element in its assembled state within the outer conductor contact element.

Thus, the insulating protection element can advantageously be displaced from the outside, for example by means of the assembly tool or also a finger of the fitter or user of the connector.

The at least one guide means can also be designed in the form of at least one groove or at least one recess, for example also in the form of grooves in the outer wall of the insulating protection element.

If necessary, however, a separately designed guide means can also be dispensed with. For example, the insulating protection element itself or the access opening of the insulating protection element can be used to move the insulating protection element. For example, the assembly tool (or a finger of the fitter) provided for fastening the inner conductor contact element can be partially inserted into the access opening and the insulating protection element can then be displaced by initiating the movement at the access opening. In particular, a mounting recess designed as an elongated hole or a rectangular, elongated recess in the outer conductor contact element can be well suited for this variant.

According to a further development of the invention it can be provided that several inner conductor contact elements, preferably two inner conductor contact elements or even more inner conductor contact elements, and a number of corresponding assembly recesses and access openings are provided.

As already mentioned, the invention is basically suitable for use with a plug connector with any number of inner conductor contact elements. Particularly preferably, however, two inner conductor contact elements are provided, the respective fastening of which to an inner conductor of the electrical cable is made possible by a respective assembly access through corresponding assembly recesses or access openings.

The invention also relates to an insulating protection element for an electrical connector, the insulating protection element being arranged between (at least) one inner conductor contact element and an outer conductor contact element of an electrical connector. The insulating protection element can be displaced between a mounting position and an insulating protection position. In the assembly position, the insulating protection element releases (at least) one assembly access through a (at least one) assembly recess provided in the outer conductor contact element for fastening the inner conductor contact element to an inner conductor of an electrical cable. In the insulation protection position, the insulation protection element blocks the assembly access.

According to the invention, a captive electrically insulating protective insulating element can be provided for protection against a short circuit between the inner conductor or the inner conductors and an outer conductor shield of an electrical cable.

In the insulation protection position, conductive screws used in particular for fastening the inner conductor contact element to the inner conductor can be completely electrically insulated, so that no electrical connection can arise between the outer conductor shield of the cable and the inner conductor contact element.

The insulating protection element can also be used for permanent protection against the loss of clamping screws or screws for fastening inner conductor contact elements to inner conductors of the cable.

The insulating protection element according to the invention is particularly cost-optimized and can be extremely easy to install in the context of an assembly of the electrical plug connector and in particular also suitable for mass production of plug connectors.

The insulating protection element can optionally also have an assembly prevention, for example a nose extending axially in the direction of the cable, in order to positively block final assembly of the electrical connector, in particular with regard to the screwing on of a locking nut, a locking sleeve or other connector component, if the insulating protection element is not is in the insulation protection position.

1. a) Verschieben des Isolierschutzelements in eine Montageposition, in der (wenigstens) ein Montagezugang zu dem Innenleiterkontaktelement durch (wenigstens) eine in dem Außenleiterkontaktelement bereitgestellte Montageausnehmung freigegeben ist;
2. b) Befestigen des Innenleiterkontaktelements an einem Innenleiter eines elektrischen Kabels durch den freigegebenen Montagezugang; und
3. c) Verschieben des Isolierschutzelements in eine Isolierschutzposition, in der der Montagezugang zu dem Innenleiterkontaktelement durch das Isolierschutzelement versperrt wird.

The invention also relates to a method for assembling an electrical plug connector which has (at least) an inner conductor contact element, an outer conductor contact element and an insulating protection element arranged between the outer conductor contact element and the inner conductor contact element. As part of the method according to the invention, at least the following method steps are provided:

1. a) moving the insulating protection element into an assembly position in which (at least) one assembly access to the inner conductor contact element is released through (at least) one assembly recess provided in the outer conductor contact element;
2. b) fastening the inner conductor contact element to an inner conductor of an electrical cable through the released assembly access; and
3. c) Moving the insulating protection element into an insulating protection position in which the assembly access to the inner conductor contact element is blocked by the insulating protection element.

The above-mentioned first method step (moving the insulating protection element into the assembly position) can in particular already take place implicitly in the context of a pre-assembly of the insulating protection element.

The method step of fastening the inner conductor contact element or elements to corresponding inner conductors of the cable can preferably be carried out by pressing or clamping the inner conductor in a cylindrical inner conductor contact element by means of a screw.

To fasten the inner conductor contact element, an assembly tool, for example a screwdriver, can be passed through the assembly access when the insulating protection element is in the assembly position.

The insulating protection element can be moved between the mounting position and the insulating protection position in particular by rotating it.

In an advantageous manner, it can be ensured that in particular screw heads for fastening the inner conductor contact elements are not unintentionally visible and there is thus the possibility of a short circuit.

It can be provided that the insulating protection element latches in the assembly position and / or (in particular) in the insulating protection position with a plug connector component, for example an inner housing shell or an insulating part. In particular, if latching is provided in the insulation protection position, the insulation protection element cannot be unintentionally moved back into its assembly position or turned over. It can thus be ensured that the insulating protection element does not move back automatically due to vibrations or shocks during assembly, transport and / or use of the connector. Only with a conscious, increased expenditure of force can the insulating protection element be brought back into the assembly position if necessary.

Since the insulating protection element according to the invention is optionally in the outer conductor contact element, preferably within a groove of the outer conductor contact element, an insulating part or one between the outer conductor contact element and the groove formed in the insulating part, can be preassembled, this cannot be forgotten by the installer during cable installation.

If the diameter of the access opening of the insulating protection element is smaller than the diameter of a screw head of a screw used, the insulating protection element can also prevent the clamping screws from being lost at any time - even in the assembly position. The screws used cannot be lost within the insulating protection element even in a loose delivery condition.

Conventional screwdrivers can advantageously be used to mount the inner conductor contact elements on the inner conductors of the cable. Special tools are therefore not absolutely necessary.

The invention is particularly suitable for use with circular connectors and especially for circular connectors in which one or more inner conductor contact elements must be clamped to the inner conductor of an electrical cable with screws and must be separated from an outer conductor shield of the cable.

The invention also relates to an advantageous use of an electrical plug connector according to the statements above and below for supplying power to active mobile radio antennas.

For example, comparatively high currents are required to supply power to active cell phone antennas (e.g. 50 amps at 60 volts). The cross-section of the inner conductors of the transmission cables used on a cell phone tower is designed to be correspondingly large. In a corresponding power connector, the inner conductors of the cable can therefore preferably be fastened by means of a screw connection. As a rule, a metallic screw is used for each inner conductor, which is fed radially through the mounting recess of the outer conductor contact element and screwed into an aligned threaded hole provided in the insulating part or in the inner conductor contact element. Finally, a ground shield or an outer conductor shield of the electrical cable can be passed over the outer surface of the outer conductor contact element.

The insulating protection element according to the invention can then reliably prevent an undesired short circuit between an inner conductor and the outer conductor shield of the cable by moving the insulating protection element into the insulating protection position according to the invention.

The invention also relates to an electrical plug connection made up of an electrical plug connector according to the above and following statements and to an electrical mating connector that can be plugged together with the electrical plug connector.

Finally, the invention also relates to a vehicle, having at least one electrical connector according to the preceding and following statements, or a mobile radio antenna with an electrical connector according to the preceding and following statements.

The invention also relates to an assembly prevention device for an insulating protection element. The insulating protection element can preferably be designed in accordance with the information given above and below. In principle, however, the assembly prevention can be suitable for any insulating protection elements. The assembly prevention can be designed to block final assembly of an electrical connector in a form-fitting manner if the insulating protection element is not in an insulating protection position (in particular an insulating protection position described above and below). The assembly prevention can also be designed to block a mating connector from being plugged into the connector in a form-fitting manner when the insulating protection element is not in an insulating protection position (in particular an insulating protection position described above and below). The assembly prevention can preferably have a nose extending axially and / or radially in the direction of the cable.

Features that have been described in connection with the electrical connector according to the invention can of course also be implemented advantageously for the insulating protection element, the electrical plug connection, the use according to the invention, the vehicle, the mobile radio antenna, the assembly method and assembly prevention - and vice versa. Furthermore, advantages that have already been mentioned in connection with the electrical connector according to the invention can also be understood in relation to the insulating protection element, the electrical plug connection, the use according to the invention, the vehicle, the mobile radio antenna, the assembly method and assembly prevention - and vice versa.

In addition, it should be pointed out that terms such as “comprising”, “having” or “with” do not exclude any other features or steps. Furthermore, terms such as “a” or “the” which refer to a single number of steps or features do not exclude a plurality of features or steps - and vice versa.

In a puristic embodiment of the invention, however, it can also be provided that the features introduced in the invention with the terms “comprising”, “having” or “with” are conclusively enumerated. Accordingly, one or more lists can be regarded as complete within the scope of the invention, for example considered for each claim. The invention can consist exclusively of the features mentioned in claim 1, for example.

It should also be emphasized that the values and parameters described here have deviations or fluctuations of ± 10% or less, preferably ± 5% or less, more preferably ± 1% or less, and very particularly preferably include ± 0.1% or less of the specified value or parameter, provided that these deviations are not excluded when implementing the invention in practice. The specification of ranges by start and end values also includes all those values and fractions that are included in the respective named range, in particular the start and end values and a respective mean value.

Exemplary embodiments of the invention are described in more detail below with reference to the drawing.

The figures each show preferred exemplary embodiments in which individual features of the present invention are shown in combination with one another. Features of an exemplary embodiment can also be implemented separately from the other features of the same exemplary embodiment and can accordingly be easily combined by a person skilled in the art to form further useful combinations and sub-combinations with features of other exemplary embodiments.

In the figures, functionally identical elements are provided with the same reference symbols.

Figur 1

einen erfindungsgemäßen elektrischen Steckverbinder und ein elektrisches Kabel in perspektivischer Darstellung;

Figur 2

einen Teilschnitt des elektrischen Steckverbinders und des elektrischen Kabels der Figur 1;

Figur 3

eine weitere Schnittdarstellung des elektrischen Steckverbinders der Figur 1 bei ausgeblendetem Kabel;

Figur 4

ein erfindungsgemäßes, ringförmiges Isolierschutzelement in einer perspektivischen Darstellung;

Figur 5

einen Querschnitt durch den elektrischen Steckverbinder der Figur 1 zur Verdeutlichung der Befestigung der Innenleiterkontaktelemente mittels eines durch den Montagezugang eingeführten Montagewerkzeugs;

Figur 6

einen Ausschnitt eines elektrischen Steckverbinders gemäß einem zweiten Ausführungsbeispiel mit einem ringförmigen Isolierschutzelement in der Montageposition mit einer aus dem Außenleiterkontaktelement axial herausragenden Fahne zum Einleiten der Verschiebung;

Figur 7

den elektrischen Steckverbinder der Figur 6 mit ausgeblendetem Außenleiterkontaktelement;

Figur 8

den elektrischen Steckverbinder der Figur 6 mit ausgeblendetem Außenleiterkontaktelement in einer um 90° verdrehten Ansicht zur Darstellung von Rastmitteln des Isolierschutzelements;

Figur 9

den elektrischen Steckverbinder der Figur 6 mit dem Isolierschutzelement in der Isolierschutzposition;

Figur 10

den elektrischen Steckverbinder der Figur 6 mit dem Isolierschutzelement in der Isolierschutzposition und ausgeblendetem Außenleiterkontaktelement;

Figur 11

den elektrischen Steckverbinder der Figur 6 mit dem Isolierschutzelement in der Isolierschutzposition, ausgeblendetem Außenleiterkontaktelement und einer um 90° verdrehten Ansicht zur Darstellung von Rastmitteln des Isolierschutzelements;

Figur 12

ein erfindungsgemäßes, teilringförmiges Isolierschutzelement in einer perspektivischen Darstellung;

Figur 13

eine vordere Gehäusebaugruppe eines elektrischen Steckverbinders in perspektivischer Darstellung mit dem teilringförmigen Isolierschutzelement der Figur 12 in der Montageposition;

Figur 14

die vordere Gehäusebaugruppe des elektrischen Steckverbinder der Figur 13 mit dem teilringförmigen Isolierschutzelement der Figur 12 in der Isolierschutzposition;

Figur 15

einen ersten Verfahrensschritt eines Montageverfahrens für einen erfindungsgemäßen Steckverbinder;

Figur 16

einen zweiten Verfahrensschritt eines Montageverfahrens für einen erfindungsgemäßen Steckverbinder;

Figur 17

einen dritten Verfahrensschritt eines Montageverfahrens für einen erfindungsgemäßen Steckverbinder;

Figur 18

einen vierten Verfahrensschritt eines Montageverfahrens für einen erfindungsgemäßen Steckverbinder;

Figur 19

einen fünften Verfahrensschritt eines Montageverfahrens für einen erfindungsgemäßen Steckverbinder; und

Figur 20

einen sechsten Verfahrensschritt eines Montageverfahrens für einen erfindungsgemäßen Steckverbinder.

They show schematically:

Figure 1

an electrical connector according to the invention and an electrical cable in a perspective view;

Figure 2

a partial section of the electrical connector and the electrical cable of Figure 1 ;

Figure 3

a further sectional view of the electrical connector of the Figure 1 with hidden cable;

Figure 4

an inventive, annular insulating protection element in a perspective view;

Figure 5

a cross section through the electrical connector of Figure 1 to illustrate the attachment of the inner conductor contact elements by means of an assembly tool introduced through the assembly access;

Figure 6

a section of an electrical connector according to a second embodiment with an annular insulating protection element in the assembly position with a flag axially protruding from the outer conductor contact element to initiate the displacement;

Figure 7

the electrical connector of the Figure 6 with hidden outer conductor contact element;

Figure 8

the electrical connector of the Figure 6 with hidden outer conductor contact element in a view rotated by 90 ° to show latching means of the insulating protection element;

Figure 9

the electrical connector of the Figure 6 with the insulation protection element in the insulation protection position;

Figure 10

the electrical connector of the Figure 6 with the insulating protection element in the insulating protection position and hidden outer conductor contact element;

Figure 11

the electrical connector of the Figure 6 with the insulating protection element in the insulating protection position, hidden outer conductor contact element and a view rotated by 90 ° to show latching means of the insulating protection element;

Figure 12

an inventive, partially annular insulating protection element in a perspective view;

Figure 13

a front housing assembly of an electrical connector in a perspective view with the partially annular insulating protection element of Figure 12 in the mounting position;

Figure 14

the front housing assembly of the electrical connector of the Figure 13 with the partially annular insulating protection element of Figure 12 in the insulation protection position;

Figure 15

a first method step of an assembly method for a connector according to the invention;

Figure 16

a second method step of an assembly method for a connector according to the invention;

Figure 17

a third method step of an assembly method for a connector according to the invention;

Figure 18

a fourth method step of an assembly method for a connector according to the invention;

Figure 19

a fifth method step of an assembly method for a connector according to the invention; and

Figure 20

a sixth method step of an assembly method for a connector according to the invention.

Figure 1 shows an electrical connector 1 according to the invention in a perspective view. The electrical connector 1 is shown as an example connected to an electrical cable 2.

The invention is described merely by way of example with reference to the electrical plug connector 1 shown in the figures. In principle, an electrical connector according to the invention can have any structure, for example a coaxial structure, a triaxial structure or some other structure. In the exemplary embodiment, the electrical connector 1 has, for example, a round geometry. In principle, however, the invention can also be suitable for use with a rectangular connector, for example a flat connector.

The Figures 2 and 3 show sectional views of the in Figure 1 connector 1 shown in the longitudinal direction, ie along the longitudinal axis L or along the central axis of the electrical connector 1, wherein Figure 2 a partial section through the rear area of the connector 1 together with the electrical cable 2 and Figure 3 show a complete section through the connector 1 without the electrical cable 2.

The electrical connector 1 has two inner conductor contact elements 3 (cf. in particular Figure 3 ). This is only to be understood as an example. In principle, the electrical connector 1 can have any number of inner conductor contact elements 3, for example only one inner conductor contact element 3. The inner conductor contact elements 3 are provided for contacting mating contact elements of a corresponding mating connector (not shown) and are to be electrically connected to the inner conductors 4 of the electrical cable 2, like this particularly well in Figure 2 is recognizable.

The illustrated electrical connector 1 is designed as an example for the transmission of high currents. For this purpose, the inner conductors 4 of the cable 2 can particularly advantageously be fastened to the inner conductor contact elements 3 or clamped to them by means of a screw 5 (see, inter alia, FIG. 3). For this purpose, the screws 5 can be particularly advantageously mountable from opposite sides of the connector 1, as shown in the exemplary embodiments. For example, a first screw 5 for connecting a first inner conductor 4 to a first inner conductor contact element 3, starting from a first side of the connector 1 and a second screw 5 for mounting a second inner conductor 4 on a second inner conductor contact element 3, starting from a side opposite the first Side of the connector 1 may be provided. In principle, however, assembly can also be provided from the same side of the connector 1 or starting from any direction.

The electrical connector 1 also has an outer conductor contact element 6 which runs around the inner conductor contact elements 3 for electromagnetic shielding. The outer conductor contact element 6 is connected to an outer conductor shield, in particular an outer conductor shield braid 7 of the electrical cable 2 (cf. inter alia Figure 2 ). The outer conductor shielding braid 7 can for this purpose, for example, be pressed or clamped between the outer conductor contact element 6 and a - preferably electrically conductive - outer housing 8 of the plug connector 1, for example in FIG Figure 2 shown. For this purpose, the outer housing 8 can be screwed onto the outer conductor contact element 6, for example, as will be shown below in the context of the assembly process in FIG Figures 15 to 20 is shown.

In order to prevent protruding individual wires of the outer conductor shield braid 7 from inadvertently producing short circuits with one of the inner conductor contact elements 3, an insulating protection element 9 is arranged between the outer conductor contact element 6 and the inner conductor contact elements 3. The insulating protection element 9 in the Figures 1 to 3 , 5 to 11 such as 15 to 20 The connector 1 shown is ring-shaped and is exemplified in FIG Figure 4 shown in perspective.

For the provision of assembly access M (for example in Figure 5 for fastening the inner conductor contact elements 3 to the respective inner conductors 4 of the electrical cable 2, corresponding assembly recesses 10 are provided in the outer conductor contact element 6, which in the exemplary embodiments are particularly advantageously designed as elongated holes (cf. e.g. Figures 6 , 9 as well as 13 and 14).

According to the invention, the insulating protection element 9 is between a mounting position (cf., for example, the alignment in Figure 6 or in Figure 13 ) and an insulation protection position (see e.g. the alignment in Figure 9 or in Figure 14 ) movable. In the assembly position, the insulating protection element 9 is arranged relative to the outer conductor contact element 6 such that the assembly access M is released through the assembly recess 10 of the outer conductor contact element 6 up to the respective inner conductor contact element 3. In the insulation protection position, however, the assembly access M is blocked by the insulation protection element 9.

For this purpose, the insulating protection element 9 preferably has at least one access opening 11. In the exemplary embodiments, a separate access opening 11 and a separate assembly recess 10 are provided for each inner conductor contact element 3 or for each assembly access M. In the assembly position, the access opening 11 is aligned with the assembly recess 10 such that the assembly access M to the respective inner conductor contact element 3 through the assembly recess 10 and the access opening 11 is released. In the insulating protection position, however, the access opening 11 is shifted accordingly and the assembly access M is blocked as a result.

The electrical plug connector 1 optionally has an insulating part 12 between the inner conductor contact elements 3 and the outer conductor contact element 6. In the present case, the insulating protective element 9 is guided between the insulating part 12 and the outer conductor contact element 6, wherein the insulating protective element 9 can in principle also be guided between the insulating part 12 and the inner conductor contact elements 3. In order to ensure the assembly access M in the case of the insulating protection element 9 in the assembly position, the insulating part 12 has assembly openings 13 corresponding to the assembly recesses 10 (cf. Figure 5 ), which are arranged in alignment with the mounting recesses 10 of the outer conductor contact element 6.

In the in the Figures 1 to 11 As well as in the exemplary embodiments shown in FIGS. 15 to 20, the insulating protection element 9 can be displaced in a rotational manner between the assembly position and the insulating protection position with respect to the longitudinal axis L of the electrical connector 1. For this purpose, the insulating protection element 9 is guided in a recess or groove 14 formed between the insulating part 12 and the outer conductor contact element 6. In principle, however, the insulating protection element 9 can, for example, also be guided exclusively in a groove in the outer conductor contact element 6, in a groove in the inner conductor contact element 3 or even in a groove in the insulating part 12. The insulating protection element 9 can also be guided in a groove formed between the insulating part 12 and the inner conductor contact element 3.

The access opening 11 of the insulating protection element 9 is designed, for example, as a bore in the exemplary embodiments. The access opening 11 can, however, also be designed as an elongated hole or some other recess, for example also as a rectangular recess. This also applies analogously to the assembly recess 10 of the outer conductor contact element 6 and the assembly opening 13 of the insulating part 12.

In Figure 5 the fastening of the inner conductor contact elements 3 to the inner conductors 4 of the electrical cable 2 through the released assembly access M is illustrated by way of example using a cross section through the plug connector 1. Through the assembly access M, which can be provided by the alignment of the insulating protection element 9 in the assembly position, an assembly tool, for example the screwdriver 15 shown, can be guided through the assembly recesses 10, assembly openings 13 and access openings 11 up to the screws 5, around the inner conductor 4 to clamp within the hollow cylindrical inner conductor contact elements 3 by tightening the screws 5. Torx screws 5 are shown purely by way of example; in principle, any screw types can be provided. Alternatively, crimping or pressing or soldering of the inner conductor contact elements 3 and the inner conductor 4 with a corresponding suitable assembly tool can also be provided.

To provide protection against loss of the screws 5, it can be provided that the diameter of the screw heads of the screws 5 is greater than the diameter of the access opening 11 of the insulating protection element 9. This allows the assembly tool 15 to be passed through the access opening 11, but the screw 5 cannot be lost go, even if this is only present loosely in a delivery state within the insulating protection element 9.

To further clarify the mode of operation of the insulating protection element 9 and the electrical connector 1 are used Figures 6 to 11 .

In Figure 6 is the insulating protection element 9 within the outer conductor contact element 6 in its mounting position and in Figure 9 shown in its insulation protection position. The insulating protection element 9 was, as in Figure 9 shown, shifted rotationally to reach the insulation protection position, whereby the assembly access M is blocked and the screw 5 is thus also covered. Unintentional electrical contacting of the screw 5 or the inner conductor contact element 3 by protruding individual wires of the outer conductor shield braid 7 of the cable 2 is no longer possible.

In the in the Figures 6 to 11 The variant of the insulating protection element 9 shown has the insulating protection element 9 differently from the one in FIG Figures 1 to 5 and 15 to 20 Embodiments shown have additional guide means 16, in the present case axially protruding from the insulating protection element 9, whereby the insulating protection element 9 in its assembled state can be moved particularly comfortably by the user within the outer conductor contact element 6. For better illustration, the outer conductor contact element 6 is in the Figures 7 and 10 hidden. In principle, however, a corresponding guide means 16 can also be omitted. For example, the user or the fitter can also move the insulating protection element 9 with his finger or the assembly tool 15, in particular if the assembly recess 10 of the outer conductor contact element 6 is designed as an elongated hole, as shown, and thus allows sufficient access to the insulating protection element 9 .

The figures also show a possibility of locking the insulating protection element 9 in the assembly position and in the insulating protection position. This is especially good in the Figures 4 , 8th , 11 and 12 recognizable. For this purpose, the insulating protection element 9 has axially protruding latching means 17 which interact with corresponding latching elements 18 of the insulating part 12, which are designed, for example, as a rail guide.

In principle, any number of locking means 17 and locking elements 18 can be provided, for example only one locking means 17 and one corresponding locking element 18; In the exemplary embodiment, two latching means 17 and two latching elements 18 on opposite sides of the insulating protection element 9 and of the insulating part 12 are shown by way of example.

In the exemplary embodiment, latching is provided in the assembly position as well as in the insulation protection position. In principle, however, locking can only be provided in the assembly position or in the insulation protection position. At least one latching in the insulating protection position can be particularly advantageous, since then the insulating protection element 9 cannot be moved back into the "unsafe" assembly position unintentionally (e.g. during the later use of the connector 1).

In order to make the locking releasable at least with increased expenditure of force, the locking means 17 of the insulating protection element 9 is according to FIGS Figures 1 to 11 formed in the middle of an elastic spring arm 19. The spring arm 19 is formed, for example, by a slot-shaped recess in the insulating protection element 9. In principle, however, the spring arm 19 can also be shaped in other ways. The locking means 17 can also be attached to a free end of the spring arm 19.

A latching of the insulating protection element 9 does not necessarily have to take place on the (anyway optional) insulating part 12. A latching of the insulating protection element 9 can also be provided on the outer conductor contact element 6 or even on one of the inner conductor contact elements 3. In principle, a latching with any plug connector component of the plug connector 1 can be provided.

The insulating protection element 9 can also be only partially annular, in which case one insulating protection element 9 can be provided for each inner conductor contact element 3 in a particularly advantageous manner. An exemplary, partially annularly designed insulating protection element 9 is shown in FIG Figure 12 shown in perspective.

The partially annular insulating protection element 9 of the Figure 12 can also be rotatably displaceable with respect to the longitudinal axis L of the electrical connector 1 between the mounting position and the insulation protection position. In the case of a partially annular insulating protection element 9, however, an axial displacement between the mounting position and the insulating protection position can also be advantageous. Such an axial displacement is exemplified in Figures 13 and 14 shown.

Figure 13 shows the partially annular insulating protection element 9 within the outer conductor contact element 6 in its assembly position, whereby the assembly access M to the corresponding inner conductor contact element 3 is released.

In Figure 14 the partially annular insulating protection element 9 is shown in its insulating protection position. Due to the axial displacement of the insulating protection element 9 or its access opening 11 relative to the assembly recess 10 of the outer conductor contact element 6, the assembly access M in the in Figure 14 connector 1 shown thus blocked.

For initiating the axial displacement of the insulating protection element 9, this can be done in the Figures 12 to 14 shown guide means 16 (also an axially protruding flag) can be used. Furthermore, the partially annular insulating protection element 9 can also latch in the outer conductor contact element 6, in the insulating part 12 and / or in the inner conductor contact elements 3 in the assembly position and / or the insulation protection position, for which a laterally protruding latching means 17 is exemplified in Figure 12 is shown.

In particular in the case of an axial displacement of the insulating protection element 9, the insulating protection element 9 can also be designed in the form of a plate (not shown further in the exemplary embodiments).

The Figures 15 to 20 show a method according to the invention for assembling the electrical plug connector 1 using a few exemplary method steps. Basically, it should be mentioned that further method steps can also be provided. In particular, process steps can also be omitted within the scope of the invention; the figures thus in particular also show only optional method steps. Furthermore, the sequence of the method steps can vary.

First of all, it can be provided that the electrical cable 2 is prepared or pre-assembled for contacting the connector 1. For this purpose, the electrical cable 2 can be freed from a cable sheath 20 at its end to be processed. The outer conductor shield braid 7 can then be folded back over the remaining cable sheath 20. A filling layer (not shown in the figures) and any existing cable foil (also not shown) can then be removed in order to separate the inner conductors 4 and make them accessible for further processing. The individual inner conductors 4 can then be freed of their insulation 21 at a front section and the wires of the inner conductors 4 exposed. Then again, wire sleeves 22 can be connected to the exposed wires of the inner conductors 4, for example crimped or soldered. This state of the cable is in Figure 15 shown.

In Figure 15 Furthermore, the outer housing 8 and a locking nut 23 are already pushed onto the cable sheath 20 of the cable 2 for later assembly. In the in Figure 15 The process step shown can finally be pushed onto the inner conductor 4 of the cable 2, consisting of the outer conductor contact element 6, the inner conductor contact elements 3, the insulating part 12, the insulating protective element 9 and a protective cap 24, the front housing assembly 25 (also known as "connector head").

In a subsequent process step according to Figure 16 the insulating protection element 9 for fastening the inner conductor contact elements 3 to the inner conductors 4 of the cable 2 can first be brought into the assembly position (if not already preassembled). Thus, the assembly access M to the inner conductor contact elements 3 through the outer conductor contact element 6 and the insulating part 12 is guaranteed. For example, an in Figure 5 The screwdriver 15 shown can be used to tighten the respective screws 5 for clamping the inner conductor 4 in the inner conductor contact elements 3.

Subsequently, in a subsequent process step according to Figure 17 the screwdriver 15, a finger of the fitter or a possibly existing guide means 16 of the insulating protection element 9 can be used to move the insulating protection element 9 into its insulating protection position, in which the assembly access M to the inner conductor contact element 3 is blocked by the insulating protection element.

In a subsequent process step according to Figure 18 It can be provided that the outer conductor shield braid 7 is placed on the outer conductor contact element 6 of the plug connector 1.

Subsequently, in a further process step, as in Figure 19 shown, the outer housing 8 of the connector 1 together with the locking nut 23 can be pushed onto the outer conductor contact element 6 from behind and screwed to it. The outer conductor braid 7 is thereby clamped between the outer conductor contact element 6 and the outer housing 8 of the plug connector 1. Because the insulating protection element 9 is in its insulating protection position, any protruding individual wires of the outer conductor shielding braid 7 cannot produce a short circuit with the inner conductor contact elements 3.

If necessary, it can be provided that the insulating protection element 9 has an assembly prevention device (not shown) which only allows assembly of the outer housing 8 of the electrical connector 1 when the insulating protection element 9 is in its insulating protection position. For example, a web protruding axially in the direction of the cable 2 can be provided for this purpose, which, in the assembly position of the insulating protection element 9, blocks the outer housing 8 of the connector 1 from being attached to the outer conductor contact element 6 in a form-fitting manner and only in the insulation protection position releases.

In Figure 20 Finally, the fully assembled electrical connector 1 is shown on the cable 2, with finally the locking nut 23 being screwed onto the outer housing 8, on the one hand to provide the seal between the cable 2 and the connector 1 and, on the other hand, to provide a strain relief.

Claims (15)

Electrical connector (1), comprising an inner conductor contact element (3), an outer conductor contact element (6) and an insulating protection element (9) arranged between the inner conductor contact element (3) and the outer conductor contact element (6), the outer conductor contact element (6) having a mounting recess (10) for the provision of an assembly access (M) for fastening the inner conductor contact element (3) to an inner conductor (4) of an electrical cable (2),
characterized in that
the insulating protection element (9) between an assembly position in which the assembly access (M) through the assembly recess (10) to the inner conductor contact element (3) is released, and an insulating protection position in which the assembly access (M) to the inner conductor contact element (3) through the Isolation protection element (9) is blocked, is displaceable. Electrical connector (1) according to claim 1,
characterized in that
the insulating protection element (9) has an access opening (11) which, in the assembly position, is aligned with the assembly recess (10) so that the assembly access (M) to the inner conductor contact element (3) through the assembly recess (10) and the access opening (11) is released. Electrical connector (1) according to claim 1 or 2,
characterized in that
an insulating part (12) is arranged between the inner conductor contact element (3) and the outer conductor contact element (6), which has an assembly opening (13) which, together with the assembly recess (10) of the outer conductor contact element (6), is able to provide the assembly access (M). Electrical connector (1) according to one of Claims 1 to 3,
characterized in that
the electrical connector (1) has a round geometry, the outer conductor contact element (6), the inner conductor contact element (3), the insulating part (12) and / or the insulating protection element (9) having an essentially round cross section. Electrical connector (1) according to one of Claims 1 to 4,
characterized in that
the insulating protection element (9) in a groove in the outer conductor contact element (6), in a groove in the inner conductor contact element (3), in a groove in the insulating part (12), in a groove (14) formed between the insulating part (12) and the outer conductor contact element (6) ) and / or is guided in a groove formed between the insulating part (12) and the inner conductor contact element (3). Electrical connector (1) according to one of Claims 1 to 5,
characterized in that
the mounting recess (10) of the outer conductor contact element (6), the access opening (11) of the insulating protection element (9) and / or the mounting opening (13) of the insulating part (12) is designed as a bore or elongated hole. Electrical connector (1) according to one of Claims 1 to 6,
characterized in that
the inner conductor (4) of the cable (2) is fastened to the inner conductor contact element (3) by means of a screw (5), the assembly access (M) running in such a way that the screw (5) can be inserted into the through the insertion of an assembly tool (15) Assembly access (M) can be operated. Electrical connector (1) according to claim 7,
characterized in that
the screw (5) in the insulation protection position of the insulation protection element (9) is completely covered by the insulation protection element (9). Electrical connector (1) according to claim 7 or 8,
characterized in that
the diameter of a screw head of the screw (5) is greater than the diameter of the access opening (11) of the insulating protection element (9). Electrical connector (1) according to one of Claims 1 to 9,
characterized in that
the insulating protection element (9) has latching means (17) for latching with a corresponding latching element (18) of the outer conductor contact element (6), the inner conductor contact element (3) and / or the insulating part (12) in order to secure the insulating protection element (9) in the mounting position and / or to lock in the insulation protection position. Electrical connector (1) according to one of Claims 1 to 10,
characterized in that
the insulating protection element (9) is partially ring-shaped or ring-shaped, the insulating protection element (9) being rotatable and / or axially displaceable between the mounting position and the insulating protection position relative to the longitudinal axis (L) of the electrical connector (1). Electrical connector (1) according to one of claims 1 to 11,
characterized in that
the insulating protection element (9) has at least one guide means (16), in particular a radially or axially protruding flag or a web, in order to be able to move the insulating protection element (9) in its assembled state within the outer conductor contact element (6). Electrical connector (1) according to one of Claims 1 to 12,
characterized in that
several inner conductor contact elements (3), preferably two inner conductor contact elements (3) or even more inner conductor contact elements (3), and a number of corresponding mounting recesses (10) and access openings (11) are provided. Insulating protection element (9) for an electrical plug connector (1), the insulating protection element (9) being arranged between an inner conductor contact element (3) and an outer conductor contact element (6) of an electrical plug connector (1),
characterized in that
the insulating protection element (9) between a mounting position in which a mounting access (M) for fastening the inner conductor contact element (3) to an inner conductor (4) of an electrical cable (2) is released through a mounting recess (10) provided in the outer conductor contact element (6) , and an insulating protection position in which the assembly access (M) to the inner conductor contact element (3) is blocked by the insulating protection element (9), is displaceable. Method for assembling an electrical plug connector (1) which has an inner conductor contact element (3), an outer conductor contact element (6) and an insulating protection element (9) arranged between the outer conductor contact element (6) and the inner conductor contact element (3), comprising at least the following method steps: a) moving the insulating protection element (9) into an assembly position in which an assembly access (M) to the inner conductor contact element (3) is released through an assembly recess (10) provided in the outer conductor contact element (6); b) fastening the inner conductor contact element (3) to an inner conductor (4) of an electrical cable (2) through the released assembly access (M); and c) Moving the insulating protection element (9) into an insulating protection position in which the assembly access (M) to the inner conductor contact element (3) is blocked by the insulating protection element (9).

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