DE102013005106B3 - Plug device for making electrical contact with socket device in e.g. electrical vehicle, has multiple separate contact sections independently, individually and electrically contacted with one another - Google Patents

Abstract

The device (20) has a contact part (22) provided with a front side contact surface that is connected to an electrical contact. A free space (F20) is formed between a first insulating sheath (20a) and the contact part perpendicular to plug direction (y). The space receives a second insulating sheath of a socket device. A recess (23) and an insulating part of the contact part are completely divided into multiple separate contact sections, which are independently, individually and electrically contacted with one another. An interface (21) comprises a central case arranged in the contact part. Independent claims are also included for the following: (1) a socket device (2) a connector system.

Description

The invention relates to a connector device according to the preamble of claim 1. Furthermore, the invention relates to a corresponding socket device and a connector system formed from the socket device and the connector device.

In the assembly of electrically conductive components, in particular components of a high-voltage circuit, for. As components of a battery system, dangerous voltages for people to be connected to the contacts. This danger exists z. As in connecting the modules of high-voltage batteries for electric and hybrid vehicles. Since the legislature prescribes safe working conditions, in these cases, to ensure occupational safety, special protective equipment and usually also additional training for the installation personnel is often required. Often isolated special tool is used, but even with it can continue to be given a high risk, because the connector components, in particular a plug or a corresponding socket, usually consist of a metallic material or have protruding conductive parts.

There are a variety of different protective housing, protective caps or insulation known by means of which connector components can be electrically isolated, but these additional insulation usually complicate the mating or coupling or decoupling of plug and socket, or they have no great practicality, for example because they are expensive, too space consuming, can not meet requirements for a required cable cross-section for streams to be transmitted or because it can not be guaranteed that they insulate the connector components as desired during the handling before mating. Safe handling would be particularly advantageous because the specialist staff would not have to be laboriously overqualified and also the use of protective equipment could be omitted. Some plug connections attempt to overcome these insulating problems by including all electrically conductive parts of an insulating sleeve-like element to ensure at least rudimentary touch protection. However, this type of contact protection is not useful in many situations. Male-female connector with such a structure usually have a complex construction with a large number of individual parts and / or are not without special knowledge (de) mountable. In addition, they require a large amount of space and / or are limited in cross-section.

In order to enable a simpler and safer handling of the connector components, it must be ensured in particular that a standardized contact protection is provided, in particular according to one of the so-called International Protection (IP) codes standardized contact protection, z. In accordance with IP1X or IP2X. The IP1X standard regulates a back protector, in particular a protection against foreign bodies (human body parts) with a diameter of more than 50 mm, and the more stringent IP2X standard regulates finger protection, in particular protection against foreign bodies (human fingertips) with a diameter over 12 mm. A relevant in connection with a shock protection standard is z. As well as the VDE 470, in which a so-called standard finger with a certain width, in particular 12.5 mm, is defined, which must not come into contact with an electrically conductive contact surface.

In some cases, an attempt is made to provide a Berührschutz characterized in that in a plug-in direction extending pin-like plug insulators are provided which extend parallel to the plug contacts and protrude further than the plug contacts. The insulation can surround the plug contacts case-like manner or also be arranged in a pin-like manner next to them.

The patent application EP 2 418 743 A1 shows a plug with a connector housing and at least one arranged therein by an insulating contact-protected contact pin, wherein the insulating body is arranged at a free end of the contact pin and is designed as a base body with arranged on the lateral surface surrounding webs and has a high tracking resistance, and wherein the connector housing is designed as a hollow cylindrical contact pin projecting plastic injection molded part. The insulating body covers the contact pin from the front side.

The publication DE 10 2010 035 943 A1 shows a connector for high voltage applications, in which in a connector housing a flat pin is held, which is surrounded by an insulating connector collar and bordered by two insulating walls and each dominated, wherein the plug collar and the insulating walls can be arranged with respect to the tab pin, that a human finger can not get in contact with the tab pin.

The publication DE 10 2008 030 337 A1 shows a touch-protected high-voltage connector for motor vehicles, in which one of two cable-side plug contacts each associated with a pre-locking position, in the there is no electrical contact and a mechanical connection is ensured. The mechanical connection can only be solved if both plug contacts are arranged in the pre-locking position by a two plug contacts blocking latch is moved orthogonal to the direction of insertion. As a result, contact protection can be realized by a position dependency on two individual plug contacts.

The utility model DE 90 04 383 U1 shows a designed with a view to a simplified preliminary or final hermaphroditic connector with a electrical contacts superior housing, wherein in the area enclosed by the housing elevations and triangular cover surfaces are provided, which ensure a contact protection for the electrical contacts.

The patent application WO 96/15567 A1 shows a male-female connection with a plug with two touch-protected electrical contacts, eg. B. for use in the household sector as well as a widely used so-called Schuko plug, wherein the electrical contacts are each covered by a spring-mounted insulating sleeve of an electrically insulating material, which are stored and guided in the plug and the plug operation against the spring force in the Plug can be pushed and release the electrical contacts.

The DE 197 14 693 A1 describes a plug-in connection unit of a face coupling system and a coaxial connector provided with this. The plug-in connection unit of a front surface coupling type is provided with a first one a second plug-in connection, the end surfaces of which are brought into contact with each other to provide an electrical connection. The first connector has an insulator protruding from the end surface thereof, and the second connector has a slot for receiving the insulator in the end surface. Furthermore, an insulator can also be provided on the end face of the second plug connection, which can be received by a corresponding slot in the end face of the first plug connection. The insulators can be designed, for example, plate-shaped or cylindrical and as insulator. The arrangement of the insulators on the end surfaces to prevent contact with a finger of an operator.

It is an object of the invention to provide a socket or a plug provided for electrical contact plug-socket connection with a good contact protection with a view to safe handling, in particular to reduce the risk of electric shock to a human.

This object is achieved by a plug device with the features of patent claim 1 and by a socket device and by a connector system having the features of the respective independent patent claim. Advantageous embodiments with expedient developments of the invention are specified in the dependent claims.

• – mindestens einem Kontaktteil zum elektrischen Kontaktieren eines korrespondierenden Kontaktteils der korrespondierenden Buchsenvorrichtung; und
• – einem den mindestens einen Kontaktteil umgebenden und in einer Steckrichtung überragenden Berührschutz in Form eines Isoliermantels aus einem elektrisch isolierenden Material.

The invention is based on a plug device for contact-safe electrical contacting of a corresponding socket device, with

• - At least one contact part for electrically contacting a corresponding contact part of the corresponding socket device; and
• - A surrounding the at least one contact part and superior in a plug direction contact protection in the form of an insulating jacket made of an electrically insulating material.

According to the invention, it is provided that the contact part has an end face contactable contact surface for the electrical contacting, wherein the contact surface is formed perpendicular to the insertion direction. Furthermore, the contact part in the contact surface on at least one recess which is coupled to a corresponding insulating part of the socket device, which protrudes from a corresponding contact surface of the socket device, and / or on the contact part at least one Berührschutz further forming insulating part is arranged, which in its plugging direction projecting from the contact part and with a corresponding recess which is provided in the corresponding contact part of the socket device, can be coupled. In this case, a clearance is formed between the insulating jacket and the contact part perpendicular to the insertion direction, which is formed for receiving a corresponding insulating jacket of the jack device. In addition, the at least one recess and / or the at least one insulating part completely subdivide the contact part by providing a plurality of separate contact part sections which are independent of each other and can each be electrically contacted individually.

In this way, an electrical insulation of the frontal contact surface of the corresponding socket device can be done and a Berührschutz be ensured without thereby complicating the plug-in process or the components of the male-female connection must be elaborately constructed. In addition, the invention also provides the possibility of the contact part of the connector device with the to screw corresponding contact part of the corresponding socket device, while still both parts, so both the socket device and the plug device are touch protected.

In this case, at least one contact part is provided, and it can optionally be provided a plurality of contact parts and / or the contact part can each be dissected by the recess one or more pieces, in particular in function of a required number of different electrical poles.

In this case, a recess which divides the contact surface into at least two surface sections is preferably a recess which extends at least through the contact surface. The recess completely subdivides the contact part by providing a plurality of separate contact part sections, which are independent of each other and are each individual electrically contactable components or elements, eg. B. for different poling, z. B. at a nine-pin connector. The recess can pass completely through the contact part, in particular in a direction perpendicular to the insertion direction. The recess may be formed, for example, as a groove or as a web-shaped recess, which completely and / or only partially pass through the contact surface and / or only partially protrude into the contact surface. In this case, a plurality of recesses formed in this way can also be provided; in particular, a plurality of recesses may also be provided which differ from each other in their design.

In this case, a contact surface which can be contacted at the end face or an end-face contact surface is preferably a contact surface which can be seen, at least to a large extent, in a plan view of the plug device on the side of the plug-in side. In other words, the contact surface extends with respect to the plugging direction y at an angle of 90 degrees, that is perpendicular. In this way, an end-side contact can be made, in which a Berührschutz is ensured, in particular a contact with a well-adjustable contact force.

In this arrangement, a low-resistance (large) contact surface can be provided without the plug device having to have a large extension in a plugging direction. At the same time it can be prevented that the electrically conductive contacts are bent during a plug-in operation. In other words, a particularly robust connector device can be realized by a contact surface aligned perpendicular to the plug-in direction. The contact part may be formed either as an independent component or as an integral part of the connector device.

Preferably, a plurality of similar recesses are provided, which are distributed uniformly with respect to the surface area of the contact surface on the contact surface and are arranged on the contact surface. More preferably, the recesses are formed to an outer edge in the contact surface. In this way, a simple coupling of the recesses can be done with corresponding insulating parts, especially because tilting in the recess itself is not likely, even if plug and socket are arranged at the beginning of the plug-in operation at an angle to the direction of insertion.

As a result, a simple plug movement can be ensured, and a contact can be ensured by a linear movement in a single direction, with a contact force at the corresponding contact surfaces can be well dosed. The contact can be made over a large area even with not 100% exactly made to measure jack or plug, without a sensitive or inaccurate contact is present.

Through the free space, a guide can be provided, by means of which a meshing or coupling of socket and plug device is facilitated. Preferably, the free space is circumferentially formed as the contact surface surrounding gap or trench. As a result, a coupling between the plug and socket can be ensured in a simple and unambiguous manner. Optionally, protruding portions or lobes or shoulders may be formed in the circumferential gap to allow only one coupling in a certain angular orientation circumferentially about an axis in the insertion direction, e.g. B. with regard to a definable electrical polarity.

According to an advantageous embodiment, the recess extends radially or concentrically with respect to an interface for mechanically connecting the socket device to the plug device, in particular in the form of a column or groove. As a result, the contact surface can be easily protected from contact. The geometry of the recesses can be realized in a simple manner, and a corresponding insulating part can have a simple, corresponding geometry which is easy to produce and which is also associated with a clear, easily understood insertion movement. Preferably, the recess has in the insertion direction extending inner circumferential surfaces which are parallel to each other. In this way, an accurate guidance of the bushing device with respect to the plug device can be ensured, in particular during the entire plugging operation and also in individual intermediate positions. As a column-like recess In this case, it is preferable to understand a recess which divides the contact part and optionally also isolates individual surface sections from each other and also allows a different polarity.

According to a variant, the inner circumferential surfaces are aligned at a (small) angle to the insertion direction, so do not extend parallel to each other, but run against the direction of insertion pointed towards each other, thus widening in the insertion direction with increasing distance from each other. In this way, a particularly smooth connector can be provided, and a friction between the (inner) surfaces (inner circumferential surfaces) of the recess and the (outer) surfaces (outer circumferential surfaces) of the corresponding insulating part can be minimized. The angle or the slope is preferably only a few degrees, z. B. 1 to 10 degrees, preferably 5 degrees.

According to a variant, the contact part is formed from a plurality of individual contact parts, which are arranged relative to one another such that the recess or the recesses is or are formed between them and which are electrically coupled to one another, in particular on a side facing away from the plug-in direction.

Preferably, the interface is provided centrally in the contact part. In this way, a force for mechanical connection can be symmetrically introduced into the contact part and a tilt-free mounting can be ensured. This is with regard to the coupling by means of the recess and the corresponding insulating part of advantage. The force can z. B. be applied via a screw, so that in particular thanks to the front-side contacting a tensile force of the screw leads directly to a contact force on the contacting contact surfaces. In this way, a very safe and reliable electrical contact can be made with a precisely adjustable contacting force.

By the insulating part, which is designed for coupling with a corresponding recess of the socket device, a contact protection can be improved because the contact surface of the connector device can be protected in addition to the protection provided by the Isolierkragens contact again by a thin human finger by the Contact surface is delimited into individual areas, from or between each of which an insulating part protrudes.

Preferably, the insulating part is formed according to an insulating part provided on the corresponding bushing device, that is, as a web-like and / or ring-like or tubular protruding part, which is arranged on the contact surface. Preferably, the insulating part in the plug-in direction extending outer circumferential surfaces which are parallel to each other.

More preferably, the recess and the insulating part are formed as mutually corresponding geometries, ie in the manner of a negative mold, and also arranged in the same manner to each other, in particular in a respective plurality of recesses or insulating parts. As a result, a symmetrical structure can be ensured, by which tilting during the insertion process can be avoided. Alternatively or additionally, an anti-rotation can also be done by a geometry coding on an outer side of the connector device.

According to an advantageous embodiment, the interface has a sleeve arranged centrally in the contact part. This allows a functional separation of electrical contact and mechanical connection. Preferably, the sleeve or socket is made of an electrically insulating material. As a result, a mechanical connection can be produced in a more contact-safe manner than with an electrically conductive interface.

• – mindestens einem Kontaktteil zum elektrischen Kontaktieren des korrespondierenden Kontaktteils der korrespondierenden Steckervorrichtung; und
• – einem den mindestens einen Kontaktteil umgebenden und in einer Steckrichtung überragenden Berührschutz in Form eines Isoliermantels aus einem elektrisch isolierenden Material zum Koppeln mit dem Freiraum der Steckervorrichtung.

The object is also achieved by a socket device for contact-safe electrical contacting of the corresponding connector device, with

• - At least one contact part for electrically contacting the corresponding contact part of the corresponding connector device; and
• - A surrounding the at least one contact part and superior in a plug direction contact protection in the form of an insulating jacket made of an electrically insulating material for coupling with the free space of the connector device.

According to the invention, it is provided that the contact part has a contact surface which can be contacted on the face side for the electrical contacting, which is aligned perpendicular to the plugging direction. In this case, the contact part in the contact surface on at least one recess which can be coupled with a corresponding insulating part of the connector device, which protrudes from a corresponding contact surface of the connector device, and / or on the contact part at least one protection against contact further forming insulating part is arranged, which in its plugging direction projecting from the contact part and with a corresponding recess which is provided in the corresponding contact part of the connector device, can be coupled. Furthermore, the at least one recess and / or the at least one insulating part divides the Contact part completely, by several separate contact portions are provided, which are independent of each other and each individually electrically contacted.

As an insulating part further developing the contact protection, an insulating part is preferably to be understood, which at least partially also has a shock protection function. In other words, the insulating part is designed such that a contact protection does not have to be ensured solely by the insulating sheath, but the contact protection (in addition) by the insulating part, in particular in an improved manner, for. With respect to a stricter standard than the standard, which may be satisfied solely by the insulating jacket. The insulating part therefore also enables contact-protected sockets or plugs with a large contact surface, in particular with a low electrical resistance.

As an end-face contact surface is preferably a contact surface to understand, which is at least largely recognizable in plan view of the jack device side of the plug side. In other words, the contact surface extends with respect to the plugging direction y at an angle of 90 degrees, that is perpendicular. In this way, an end-side contact can be made, in which a Berührschutz is ensured, in particular a contact with a well-adjustable contact force. In this arrangement, a low-resistance (large) contact surface can be provided without the socket device having to have a large extension in a plugging direction. At the same time it can be prevented that the electrically conductive contacts are bent during a plug-in operation. In other words, a particularly robust bushing device can be realized by a contact surface aligned at least perpendicular to the plug-in direction. The contact part may be formed either as an independent component or as an integral part of the socket device.

The insulating part can be in a freely selectable geometry, for. B. as a cross, ring, single web or individual webs, pins or the like projections. The insulating part is arranged on the contact part such that a contact of the contact part, in particular by a human finger, is no longer possible. In other words, the insulating part is shaped such that gaps resulting in the bushing device within the insulation are smaller than the diameter or dimensions of a (standard) finger. The design and arrangement of the insulating part can also be designed so that the socket device and / or the plug device another standard, such as IP 1X (hand back safe), met.

Preferably, the (mechanical) interface is provided centrally in the contact part. In this way, a force for mechanical connection can be symmetrically introduced into the contact part and a tilt-free mounting can be ensured. This is advantageous in terms of the coupling by means of the insulating part and the corresponding recess. The force can z. B. be applied via a screw, so that in particular thanks to the front-side contacting a tensile force of the screw leads directly to a contact force on the contacting contact surfaces. In this way, a very safe and reliable electrical contact can be made with a precisely adjustable contacting force.

Preferably, a plurality of similar insulating parts are provided, which are distributed uniformly with respect to the surface area of the contact surface on the contact surface and are arranged on the contact surface. More preferably, the insulating parts are provided to an outer edge on the contact surface. In this way, a simple coupling of the insulating parts can take place with corresponding recesses, in particular because tilting in the recesses itself is not likely, even if plug and socket are arranged at the beginning of the plug-in operation at an angle to the direction of insertion.

By aligning the contact surface perpendicular to the insertion direction, a simple insertion movement can be ensured, and a contact can be ensured by a linear movement in a single direction, with a contact force at the corresponding contact surfaces can be well dosed. The contact can be made over a large area even with not 100% exactly made to measure jack or plug, without a sensitive or inaccurate contact is present. Preferably, the insulating part in the plug-in direction extending outer circumferential surfaces which are parallel to each other.

According to an advantageous embodiment, the insulating part extends radially or concentrically with respect to the interface, in particular web or tubular. As a result, the contact surface can be easily protected from contact. The geometry of the insulating part can be realized in a simple manner, and a corresponding recess can have a simple corresponding geometry, which is easy to produce and is also associated with a clear, easy-to-understand insertion movement. The insulating part preferably has outer circumferential surfaces which extend in the plugging direction and which are parallel to one another. In this way, an accurate guidance of the connector device with respect to the bushing device can be ensured, in particular during the entire insertion process and also in individual intermediate positions. According to a variant, the outer circumferential surfaces are aligned at a (small) angle to the plugging direction, so do not extend parallel to each other, but run in the direction of insertion towards each other. As a result, a particularly smooth connector can be provided, and a friction between the (outer) surfaces (outer circumferential surfaces) of the insulating part and the (inner) surfaces (inner circumferential surfaces) of the corresponding recess can be minimized. The angle or the slope is preferably only a few degrees, z. B. 1 to 10 degrees, preferably 5 degrees.

Through the recess which is formed for receiving the recess corresponding to the insulating part of the connector device, a Berührschutz the connector can be further improved because the contact surface of the corresponding connector device can in addition to the protection provided by means of the Isolierkragens again against contact with a thin human fingers are protected by the contact surface is delimited into individual areas, from or between each of which an insulating part protrudes. The recess may be formed according to the recess described in connection with the connector device. Preferably, the recess is formed in accordance with a provided on the corresponding connector device recess, so as a column and / or groove-like recess, which is provided in the contact part. Preferably, the recess extends parallel to a plug-in direction (y). Preferably, the recess has in the insertion direction extending inner circumferential surfaces which are parallel to each other.

According to an advantageous embodiment of the insulating jacket is executed in a touch-safe geometry with safe to touch dimensions by the extent of the insulating jacket in at least one spatial direction is smaller than a standard distance. In this way, the contact protection can be further improved, and a contact surface can also be protected from contact even independently of provided inside the connector device insulating parts. According to a variant, the insulating jacket protects according to a first standard, and the insulating part on the contact part protects according to a second, stricter standard, ie z. B. with regard to particularly small human fingers.

The object is also achieved by a connector system formed from the described socket device and the connector device described.

According to an advantageous embodiment, both the plug device and the socket device each have at least one recess and an insulating part. As a result, an improved contact protection can be provided on both devices, in particular also in the case of large-area frontal contact surfaces. Preferably, the recess and the insulating part are arranged in the circumferential direction at an angle to each other. In this way, a fine subdivision of the respective contact part can take place, and the mutually corresponding recesses or insulating parts can be provided or introduced in a simple manner.

According to an advantageous embodiment, an interface for mechanically connecting the plug device to the socket device is formed on the socket device and the plug device and at one of the interfaces a connecting means, in particular a screw, provided for mechanical connection, which engages positively in at least one of the interfaces. In this way, a backup of the coupling can be done in a particularly simple manner, and a contact force for the defined pressing together of the contact surfaces can be well dosed, in particular by means of a screw which is screwed into one of the interfaces and passed through the other interface without screwing.

The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures or shown alone in the figures can be used not only in the respectively specified combination but also in other combinations or in isolation without the scope of the invention leave.

Further advantages, features and details of the invention will become apparent from the claims, the following description of preferred embodiments and from the drawings, wherein identical or functionally identical elements are provided with identical reference numerals. Showing:

1a in a perspective view in a schematic representation of a connector device according to a first embodiment of the invention;

1b in a perspective view in a schematic representation of a jack device according to a first embodiment of the invention;

2a in a perspective view in a schematic representation of a connector device according to a second embodiment of the invention;

2 B in a perspective view in a schematic representation of a jack device according to a second embodiment of the invention;

3a in a perspective view in a schematic representation of a connector device according to a third embodiment of the invention;

3b in a perspective view in a schematic representation of a jack device according to a third embodiment of the invention;

4 in a plan view in a schematic representation of a connector device according to a fourth embodiment of the invention; and

5 in a plan view in a schematic representation of a connector device according to a fifth embodiment of the invention.

In the 1a is a plug device 20 shown, which has a projecting in the y direction insulation, in particular an insulating jacket 20a , which has a contact part 22 surrounds. The contact part 22 is for electrical contacting with a corresponding jack device (shown in FIG 1b ) intended. Between the insulating jacket 20a and the contact part 22 a clearance F20 is provided, in particular in the form of a radial circumferential cavity. The clearance F20 is designed to receive a corresponding insulation of a bushing device (see. 1b ). Centric within the contact part 22 is an interface for mechanically connecting the connector device 20 formed with the bushing device, not shown, in particular in the form of a thread 21 , namely an internal thread or an internally threaded bore. An electrical contact can via the contact part 22 take place, in particular via the end face of the contact part formed with respect to the y-direction 22 , The contact part 22 is from recesses 23 traversed, here in the form of four radially extending columns, which are adapted to receive correspondingly shaped corresponding protruding parts of the socket device, not shown.

In the 1b is one with the in 1a shown connector device corresponding socket device 10 shown which insulation, in particular an insulating jacket 10a (Collar) which has a contact part 12 , in particular in the form of a frontal contact surface surrounds, and also also a protruding part 13 , in particular in the form of a web or a plurality of individual webs or any mechanical obstacle surrounds. The insulating part 13 is formed here of four individual cross-like arranged Isolierierteilabschnitten, each in the form of a rectangular plate. Centric in the contact surface or the contact part 12 is an opening / passage 11 formed, via which a mechanical coupling to that in the 1a shown plug device can be done. The passage 11 Can be used as a through hole for receiving a female thread in the 1a be shown plug device can be formed detachable screw.

In the 2a is a plug device 20 which has substantially the same functional structure as that in FIG 1a shown connector device. In a modification to the first embodiment, the recess 23 here in the form of a thread 21 formed concentrically surrounding annular recess or groove. Between the insulating collar 20a and the contact part 22 is also the free space F20 formed. The contact part 22 is formed by two concentrically arranged, tubular hollow cylinder sections.

In the 2 B is shown in which way the corresponding protruding part 13 can be designed to provide a mechanical coupling between in the 2a shown connector device and the socket device 10 to be able to produce. The protruding part 13 is designed as a kind of pipe section. Through this pipe section, the contact surface or the contact part 12 divided and covered so that a human finger or any other body part is not in contact with the contact surface 12 can get. The extension of the protruding part 13 in a y-direction is chosen accordingly, ie, depending on how large the contact surface to be covered 12 and thus the distance between the protruding part 13 and an insulating collar 10a is, the minimum extent in y-direction must be chosen smaller or larger, to ensure that a human finger with standardized curvature is not in contact with the contact surface 12 can get. In other words, on the one hand, the inner diameter of the protruding part 13 so small that a human finger does not fit into the formed interior, on the other hand, that is between the insulating collar 10a and the protruding part 13 formed gap so narrow that a human finger does not fit through there.

The 3a and 3b show a male-female connection, in which both the connector device 20 as well as the socket device 10 protruding parts 13 . 23.1 as well as corresponding corresponding recesses 13.1 . 23 are formed. The protruding parts are each as a single, radially extending webs 13 . 23.1 formed, and the recesses as a single, radially extending columns accordingly 13.1 . 23 , In this way, a coupling can be done only in a suitable angular alignment of plug and socket to each other. It is both in the connector device 20 as well as the socket device 10 a contact protection ensured. Neither the contact surface 22 still the contact area 12 can be contacted by a human finger. The protruding parts 13 . 23.1 Make sure that the appropriate contact surface 12 . 22 for a curved human finger, especially a fingertip, is unreachable.

In the 4 is a plug device 20 shown, which is designed with their dimensions such that a standard finger NF not in contact with a contact surface 22 the connector device 20 can be achieved by ensuring that the dimensions of the contact surface 22 at least in an extension direction, here the z-direction, are smaller than the diameter x1 or standard distance x1 of the standard finger NF. The contact surface 22 is from an insulating collar 20a completely surrounded and here has a rectangular geometry. In other words, by a matched with respect to the standard finger NF outer geometry of the connector device 20 be ensured that a contact protection is maintained, in particular according to a standard such. As the standard VDE 470th It should be noted that in the 4 shown embodiment of the insulating jacket or Isolierkragens 20a can be combined with the embodiments shown above, ie, in the contact surface 22 the recess described above can be formed. It should also be mentioned that in the 4 embodiment shown may equally relate to a socket device, which then has a corresponding insulating part.

In the 5 is a plug device 20 shown, which is also ensured by a corresponding outer geometry that a standard finger NF not in contact with a contact surface 22 can get to the electrical contact. The standard finger NF has outer dimensions, in particular the outer diameter x1, which are larger than the outer dimensions of the plug device 20 in at least one direction of extent. The outer geometry of the connector device 20 and thus one the contact surface 22 surrounding insulating collar 20a is executed here star-shaped. The insulating collar 20a is in a y-direction opposite the contact surface 22a and ensures that even when resting on a curved human fingertip on the insulating collar 20a a contact between the contact surface 22 and the human finger is not possible. By this construction, a contact protection can be ensured in a particularly simple manner. It should be mentioned that in the 5 shown embodiment of the insulating jacket or Isolierkragens 20a can be combined with the embodiments shown above, ie, in the contact surface 22 the recess described above can be formed. It should also be mentioned that in the 5 embodiment shown may equally relate to a socket device, which then has a corresponding insulating part.

Claims (8)

Plug device ( 20 ) for contact-safe electrical contacting of a corresponding socket device ( 10 ), with - at least one contact part ( 22 ) for electrically contacting a corresponding contact part ( 12 ) of the corresponding socket device ( 10 ); - one the at least one contact part ( 22 ) surrounding and in a plug-in direction (y) superior contact protection in the form of an insulating jacket ( 20a ) made of an electrically insulating material; wherein the contact part ( 22 ) has a frontally contactable contact surface for the electrical contacting, wherein the contact surface is oriented perpendicular to the plugging direction (y), wherein the contact part ( 22 ) in the contact surface at least one recess ( 23 ) having a corresponding insulating part ( 13 ) of the socket device ( 10 ), which of a corresponding contact surface of the bushing device ( 10 ) protrudes, is detachable and / or on the contact part ( 22 ) at least one protection element which further develops the contact protection ( 23.1 ) is arranged, which in its plugging direction (y) of the contact part ( 22 protruding) and with a corresponding recess ( 13.1 ), which in the corresponding contact part ( 12 ) of the socket device is provided, can be coupled, wherein between the insulating jacket ( 20a ) and the contact part ( 22 ) a clearance (F20) is formed perpendicular to the direction of insertion (y), which for receiving a corresponding insulating jacket ( 10a ) of the socket device ( 10 ) is formed, characterized in that the at least one recess ( 23 ) and / or the at least one insulating part ( 23.1 ) the contact part ( 22 ) are completely subdivided by providing a plurality of separate contact portions which are independent of each other and each individually electrically contacted. Plug device ( 20 ) according to claim 1, characterized in that the insulating jacket ( 20a ) protrudes in the insertion direction (y) relative to the contact surface, that the contact surface in resting a curved human fingertip on the Insulating jacket ( 20a ) is not contacted by the fingertip. Plug device ( 20 ) according to one of the preceding claims, characterized in that the at least one recess ( 23 ) radially or concentrically with respect to an interface ( 21 ) for mechanically connecting the plug device ( 20 ) with the socket device ( 10 ), in particular column-like or groove-shaped. Plug device ( 20 ) according to claim 3, characterized in that the interface ( 21 ) a centrally in the contact part ( 22 ) has arranged sleeve. Bushing device ( 10 ) for contact-safe electrical contacting of a corresponding connector device ( 20 ) according to one of claims 1 to 4, characterized by - at least one contact part ( 12 ) for electrically contacting the corresponding contact part ( 22 ) of the corresponding connector device ( 20 ); - one the at least one contact part ( 12 ) surrounding and in a plug-in direction (y) superior contact protection in the form of an insulating jacket ( 10a ) of an electrically insulating material for coupling with the free space (F20) of the plug device ( 20 ); wherein the contact part ( 12 ) has a frontally contactable contact surface for the electrical contacting, wherein the contact surface is formed perpendicular to the plugging direction (y), wherein the contact part ( 12 ) in the contact surface at least one recess ( 13.1 ) having a corresponding insulating part ( 23.1 ) of the connector device ( 20 ), which of a corresponding contact surface of the connector device ( 20 ) protrudes, is detachable and / or on the contact part ( 12 ) at least one protection element which further develops the contact protection ( 13 ) is arranged, which in its plugging direction (y) of the contact part ( 12 protruding) and with a corresponding recess ( 23 ), which in the corresponding contact part ( 22 ) of the connector device ( 20 ) is provided, can be coupled, wherein the at least one recess ( 13.1 ) and / or the at least one insulating part ( 13 ) the contact part ( 12 ) are completely subdivided by providing a plurality of separate contact portions which are independent of each other and each individually electrically contacted. Bushing device ( 10 ) according to claim 5, characterized in that the insulating part ( 13 ) radially or concentrically with respect to an interface ( 11 ) for mechanically connecting the plug device ( 20 ) with the socket device ( 10 ), in particular bar or tubular. Connector system with a connector device ( 20 ) according to one of claims 1 to 4 and a bushing device ( 10 ) according to one of claims 5 or 6. Connector system according to claim 7, characterized in that on the bushing device ( 10 ) and the connector device ( 20 ) each have an interface ( 11 ; 21 ) for mechanically connecting the plug device ( 20 ) with the socket device ( 10 ) and at one of the interfaces ( 11 ; 21 ) a connecting means, in particular a screw, is provided for mechanical connection, which in the other interface ( 21 ; 11 ) of the interfaces ( 11 . 21 ) engages positively.

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