EP3477792A1 - Pickup connector and grounding contact for same - Google Patents

Abstract

A protective earth contact (1) for the electrically conductive connection of a protective earth line of a current-carrying profile with an electrically conductive carrier element for the current-carrying profile is described. The protective earthing contact (1) has a sheet-metal element (2) which is designed to bear against a tapping plug-in connector (17) which can be plugged onto the current-carrying profile. The protective earth contact (1) has a contact element (11) which is relatively movable with a spring element (9, 32) to the sheet metal element (2) and for electrically conductive contacting the protective earth line of the current-carrying profile by a non-positive connection of the contact element (11) with the protective earth line is formed by means of a by the spring element (9, 32) applied spring force.

Description

The invention relates to a protective earthing contact for the electrically conductive connection of a protective earth conductor of a current-carrying profile with an electrically conductive carrier element for the current-carrying profile, wherein the protective earth contact has a sheet metal element which is designed to bear against a plug-in on the current-carrying profile connector.

The invention further relates to a tapping connector with an insulating housing, with conductor contact elements for electrically conductive contacting of electrical conductors of a current-carrying profile, and with such a protective ground contact for electrically conductive connection of a protective earth conductor of the current-carrying profile with an electrically conductive support member in which the current-carrying profile is arranged.

For distribution of electrical energy in a building and for connecting luminaires to selectively selected positions, bus bar systems with profiled elements are known, which have a comb-like cross-section with webs and grooves formed therethrough and electrical conductors accommodated in the slots. In such current-carrying profiles, these electrical conductors are inserted in the grooves, e.g. received on the side walls of the webs and can be contacted by a tap connector with protruding into the grooves contacts electrically conductive.

DE 10 2011 056 043 B4 shows a Stromschienenabgriffelement with an insulating housing and provided for contacting an electrical conductor of a comb-like busbar electrically conductive contact arm. Parallel to the contact arm extends an electrically conductive support arm, wherein a free space for receiving a comb-toothed rail of the busbar between the contact arm and the support arm is present. The electrical conductors are laterally contacted by the contact arm electrically conductive.

DE 10 2015 114 741 A1 discloses a connector for terminal attachment to a power guide profile. In the upper, lateral area of the connector has a raised protective earth contact area with a plug contact for electrically conductive connection with the power supply profile. In the cover portion of the connector part, a protrusion adapted thereto is provided with a contact pin which cooperates with a protective earth contact of the connector.

DE 9404548 U1 discloses a luminaire assembly in which a protective conductor connection is made with a prefabricated assembly unit of a connecting line and a clamping element.

DE 20 2008 001 961 U1 shows a contacting system for light bands, in which an electrically conductive line of the current-carrying profile is designed as a protective conductor. A contact finger of the contact device is designed as a leading electrical connection when placing the contact device on the current-carrying profile. With the contact fingers an electrical connection between the protective conductor of the current-carrying profile and the support rail is achieved as Zwangskontaktierung.

EP 1 475 565 B1 discloses a lighting arrangement in which a grounding plate is arranged in the region of the electrical adapter, which serves the electrical connection between the protective conductor and the mounting rail. A plug contact of the grounding plate, which is integrally formed in the mounting direction parallel to clamping fingers on the connecting surface, when plugged into an opening of a socket of the electrical adapter and contacts the protective conductor contact.

Based on this, it is an object of the present invention to provide an improved protective earth contact and a tap connector.

The object is achieved with the protective earth contact having the features of claim 1 and the tap connector having the features of claim 12. Advantageous embodiments are described in the subclaims.

It is proposed that the protective earthing contact has a protective earth contact element, which is relatively movable with a spring element to the sheet metal element and electrically conductive contacting a protective earth conductor of the current-carrying profile by a non-positive connection of the protective earth contact element with the protective earth line at least one spring force applied by the spring element is when a equipped with the protective ground contact tap connector is plugged onto the power supply profile.

With the help of such with the aid of a spring element under spring force protective earth contact element can be made in a very simple, compact and reliable way, a protective earth contact with a protective earth conductor of a current-carrying profile. In this case, an electrically conductive connection between the protective earth line and a carrier element electrically connected to the sheet metal element is produced. The protective earth contact element may be e.g. Contact the protective earth wire as a needle contact with its tip.

The protective earth contact is very simple and easy to install.

The spring element may be formed integrally with the sheet metal element. This has the advantage that the protective earth contact is extremely simple in construction and manageable. In this case, the spring element may be a free from a support plane of the sheet metal element and bent from the support plane spring tongue. The spring tongue can in this case be connected in a root area with the support plane of the sheet metal element and be released adjacent to the root area by free cuts or free punching of the sheet metal element, so that between the spring tongue and the adjacent part of the sheet metal element, a gap or gap or slot is present and the Spring tongue is movable with respect to the adjacent region of the sheet metal element.

By the deflection of the spring tongue out of the plane of the support plane, the spring force direction is predetermined for the cooperating with the spring tongue protective earth contact element.

The protective earth contact element may be integrally formed with the spring element, such as the exempted from the sheet metal element spring tongue and thus integrally formed with the sheet metal element. Thus, the protective earthing contact is formed only from a single part, namely the sheet metal element, wherein the protective earth contact element integrally connects to the spring element and possibly forms the end region of the spring element.

However, the protective earth contact element can also be a separate part from the sheet metal element, which bears against the spring element.

It is also conceivable that a separate spring element of the sheet metal element is provided, which rests on the sheet metal element and cooperates with the protective earth contact element. The protective earth contact element can be formed integrally with this separate spring element or as a separate part. Thus, it is conceivable that the protective earthing contact is formed in three parts from the sheet metal element, the spring element and the protective earth contact element, wherein the spring element between the sheet metal element and the protective earth contact element is arranged so that the protective earth contact element is relatively movable to the sheet metal element and under spring force the spring element is.

The sheet metal element may have a conductor terminal for clamping an electrical conductor. In addition, a further protective earth line can additionally be connected to a tap connector equipped with the protective earth contact. This is particularly advantageous when the protective earthing contact is used with its Abgriffsteckverbinder as a feed connector to lead electrical potential to the electrical lines of the current-carrying profile. Such a conductor connection can be designed as a spring clamp connection with at least one clamping leg. The one or more clamping legs are designed as elastic springs to clamp an electrical conductor to the sheet metal element. The clamping legs can be integrally formed from the material of the sheet metal element.

The sheet metal element may according to a preferred embodiment of the invention have tabs which are designed for clamping to the carrier element. These may be arranged, for example, on opposite sides of the sheet metal element. Thus, the sheet metal element of the protective ground contact can be resiliently clamped on both sides in a carrier element.

From the support surface of the sheet metal element can each protrude a side web, which merges into a to the plane defined by the support plane horizontal plane extending tab. With the aid of such tabs formed on side webs of the sheet metal element, it is possible to clamp the sheet metal element and thus a tap connector connected to the sheet metal element to the carrier element and to produce an electrically conductive connection between the carrier element and the sheet metal element for the protective earth.

The tabs may have at least one bent on the tab end stop for locking the tab on the support element. With such an end stop, the sheet metal element can be positively fixed to the support element and secured against pulling out. At the same time, such an end stop can also be used when attaching the sheet metal element to the carrier element in order to scratch paint or oxide layers on the carrier element and in this way to provide a reduced contact resistance for the electrically conductive connection between the sheet metal element and the carrier element.

At the tabs resilient contact tongues may protrude in a direction opposite to the direction of extension of the tab direction of the support surface away. In order to provide additional spring arms are provided, the sheet metal element resilient in pinch the support element and make electrical contact. With the help of such contact tongues a tolerance compensation for height variations of the support element is ensured.

A tap connector of the type mentioned, may be equipped with a protective earth contact described above.

In such a tap connector, the conductor contact elements may be movably mounted in the insulating housing, wherein a spring element between a support of the insulating material and the conductor contact element is arranged. The conductor contact element can be acted upon by the spring element with a spring force. By means of such conductor contact elements, the further electrical conductors of the current-carrying profile, which are provided for electrically conductive potential or data, can be contacted. These conductor contact elements are equally as the protective earth contact element for the protective earthing contact spring loaded and contact the associated electrical conductor of the current-carrying profile in the manner of a tip-contacting.

Figur 1 -

perspektivische Darstellung eines Schutzerdungskontaktes;

Figur 2 -

perspektivische Seiten-Schnittansicht eines Abgriffsteckverbinders mit einem Schutzerdungskontakt nach Figur 1;

Figur 3 -

perspektivische Darstellung einer weiteren Ausführungsform eines Schutzerdungskontaktes;

Figur 4 -

perspektivische Darstellung des Schutzerdungskontaktes aus Figur 3 mit Blick auf das Schutzerde-Kontaktelement;

Figur 5 -

Frontansicht des Schutzerdungskontaktes aus Figur 3;

Figur 6 -

perspektivische Darstellung des Blechelementes des Schutzerdungs-kontaktes aus Figuren 3 bis 5;

Figur 7 -

perspektivische Darstellung des Blechelementes des Schutzerdungs-kontaktes nach Figur 4;

Figur 8 -

perspektivische Darstellung eines Abgriffsteckverbinders;

Figur 9 -

perspektivische Darstellung des Abgriffsteckverbinders mit Blick auf das Blechelement des Schutzerdungskontaktes an der Unterseite;

Figur 10 -

perspektivische Ansicht des Isolierstoffgehäuses für den Abgriffsteckverbinder;

Figur11 -

perspektivische Seiten-Schnittansicht eines Abgriffsteckverbinders mit einer weiteren Ausführungsform eines Schutzerdungskontaktes;

Figur 12 -

Seiten-Schnittansicht des Abgriffsteckverbinders aus Figur 10;

Figur 13 -

perspektivische Darstellung der weiteren Ausführungsform des Schutzerdungskontaktes aus Figuren 10 und 11;

Figur 14 -

perspektivische Darstellung des Blechelementes für den Schutzerdungskontakt aus Figur 12;

Figur 15 -

perspektivische Darstellung des Federelementes und Schutzerde-Kontaktelement für den Schutzerdungskontakt aus Figur 12;

Figur 16 -

perspektivische Darstellung des Federelementes mit Schutzerde-Kontaktelement aus Figur 14 mit Blick von der gegenüberliegenden Seite;

Figur 17 -

perspektivische Darstellung eines Abgriffsteckverbinders im in ein Trägerelement eingesetzten Zustand.

The invention will be explained in more detail with reference to embodiments. Show it:

FIG. 1 -

perspective view of a protective earth contact;

FIG. 2 -

perspective side sectional view of a tap connector with a protective ground contact after FIG. 1 ;

FIG. 3 -

perspective view of another embodiment of a protective ground contact;

FIG. 4 -

perspective view of the protective earth contact FIG. 3 with a view to the protective earth contact element;

FIG. 5 -

Front view of the protective earthing contact FIG. 3 ;

FIG. 6 -

perspective view of the sheet metal element of the protective earthing contact FIGS. 3 to 5 ;

FIG. 7 -

perspective view of the sheet metal element of the protective earthing contact after FIG. 4 ;

FIG. 8 -

perspective view of a tap connector;

FIG. 9

perspective view of the tap connector with a view of the sheet metal element of the protective ground contact at the bottom;

FIG. 10 -

perspective view of the insulating housing for the tapping connector;

Figure 11 -

side perspective sectional view of a tap connector with another embodiment of a protective ground contact;

FIG. 12 -

Side sectional view of the tapping connector FIG. 10 ;

FIG. 13

perspective view of the further embodiment of the protective earth contact Figures 10 and 11 ;

FIG. 14 -

perspective view of the sheet metal element for the protective earthing contact FIG. 12 ;

FIG. 15 -

perspective view of the spring element and protective ground contact element for the protective ground contact FIG. 12 ;

FIG. 16

perspective view of the spring element with protective earth contact element FIG. 14 with view from the opposite side;

FIG. 17

perspective view of a tap connector in the inserted state in a carrier element.

FIG. 1 shows a perspective view of a protective earthing contact 1, which has a sheet metal element 2 with a support plane 3. The protective earth contact 1 has an integrally formed with the sheet metal element 2 spring element 9. This spring element 9 is connected in a root area with the support plane 3 of the sheet metal element 2 and adjacent thereto with a slot S exempted from the support plane 3. The spring element 9 is designed as a spring tongue, which is bent from the support plane 3 upwards. At the upper free end of the spring element 9, a support 10 is formed for supporting a separate protective earth contact element, not shown. The bearing surface forming between the support 10 and the protective earth contact element is fundamentally variable in this case; for example, the protective earth contact element can cross the support with an underside or be aligned parallel thereto. It is also conceivable that the protective earth contact element is formed integrally with the spring element 9 and forms the free end region of the spring element 9.

It can also be seen that the protective earth contact 1 has an additional conductor connection contact 13, which is likewise formed in one piece from the sheet metal element 2. In this case, a metal strip 14 projects out of the support plane 3 and is reshaped so that on the sheet metal strip 14 two opposing contact tongues 15 are bent out, between which the stripped end of an electrical conductor can be clamped. It is also conceivable, however, an embodiment in which only a single resilient contact tongue 15 is provided, which cooperates with an opposite contact edge of the metal strip 14.

It is also conceivable that a spring connection contact for an electrical conductor with an additional contact spring is formed, even if this is more complex than in the illustrated embodiment.

FIG. 2 shows a perspective side sectional view of a Abgriffsteckverbinders 17 with a protective earthing contact 1. The Abgriffsteckverbinder 17 has a Isolierstoffgehäuse 18 and built-in conductor contact elements 19 for electrically conductive contacting of electrical conductors in current management profiles.

The protective earthing contact 1 described above is inserted into the insulating housing 18 in such a way that it contacts and supports a protective earth contact element 11 provided separately in this embodiment with the spring element 9. As a result, the protective earth contact element 11 for the protective earth contact 1 protrudes with its contact tip 12 out of the insulating material housing 18, in order to contact a protective earth line arranged there. The protective earth contact element 1 is supported by a bearing 10 formed at the upper free end of the spring element 9 in such a way that it is approximately perpendicular with respect to the support plane 3 of the sheet metal element 2. The protective earth contact element 11 then applies a contact force in the extension direction to an electrical protective conductor in a current-carrying profile when the protective earth contact 1 is placed on a current-carrying profile. In order for a so-called tip-contacting is provided, with which the tapered in the illustrated embodiment, the contact end 12 of the protective earth contact element 11 rests on a protective earth line. It is thus designed as a needle contact.

In FIG. 2 is clearly visible that the spring element 9 is integrally formed from the sheet metal element 2 and bent out of this. The bending angle can in this case be selected according to a direction suitable for the contact force of the adjacent protective earth contact element 11 and, for example, be between 0 and 90 ° with respect to the support plane 3. In addition, however, in principle also blunt bending angles are conceivable.

FIG. 3 shows a perspective view of another embodiment of a protective earthing contact 1, which has a sheet metal element 2 with a support plane 3. From the support plane 3 protrude from each other opposite side webs 4a, 4b, which in the view of the representation of the support plane 3 obliquely extend away down. These side webs 4a, 4b pass over into a lug 5a, 5b which extends again in the opposite direction to the horizontal plane formed by the support plane 3.

The outer corners 6 of the tabs are bent away from the support plane 3 to the outside, to provide in this way a flared for contacting a support rail contour. Thus, the tabs 5a, 5b dig with the flared corners 6 in the sheet material of a mounting rail when the protective earth contact is inserted into a support member for a current-carrying profile.

Furthermore, it is clear that from the tabs 5a, 5b each end stops 7 are bent, which also project obliquely outwardly from the support plane 3. These end stops 7 are adapted for latching the respective tabs 5a, 5b on a support element.

It is also clear that on the tabs 5a, 5b each resilient contact tongues 8 are formed, which extend in a direction opposite to the extension direction of the respective tabs 5a, 5b direction of the support surface 3 away. These tabs 8 may be oriented obliquely to the space below the support plane 3 hinweisend to form a support for support on a plane of the support element.

With the help of these contact tongues 8, the sheet metal element 2 is resiliently (not shown) on the support element held so that the end stops 7 rest against a locking edge of the support element.

It can also be seen that the protective earthing contact 1 has a spring element 9 formed integrally with the sheet metal element 2. This spring element 9 is connected in a root area with the support plane 3 of the sheet metal element 2 and released therefrom with slots S of the support plane 3. The spring element 9 is designed as a spring tongue, which is bent from the support plane 3 transversely upwards in the opposite direction to the side webs 4a, 4b. To the upper free end of the spring element 9, a support 10 is formed by a bent-out material tab on which a separate protective earth contact element 11 superimposed. The protective earth contact element 11 then applies a contact force K in the extension direction to an electrical protective conductor in a current-carrying profile when the protective earth contact 1 is placed on a current-carrying profile. In order for a so-called tip-contacting is provided, with which the tapered in the illustrated embodiment, the contact end 12 of the protective earth contact element 11 rests on a protective earth line. It is thus designed as a needle contact.

It can also be seen that the protective earth contact 1 has an additional conductor connection contact 13, which is likewise formed in one piece from the sheet metal element 2. In this case, a sheet metal strip 14 is bent out of the support plane 3 and reshaped so that on the sheet metal strip 14, two opposing contact tongues 15 are bent out, between which the stripped end of an electrical conductor 16 can be clamped. It is also conceivable, however, an embodiment in which only a single resilient contact tongue 15 is provided, which cooperates with an opposite contact edge of the metal strip 14.

It is also conceivable that a spring connection contact for an electrical conductor 16 is formed with an additional contact spring, even if this is more complex than in the illustrated embodiment.

FIG. 4 shows a perspective view of the protective earth contact 1 from FIG. 3 with respect to the side with the protective earth contact element 11. This is again clear that the spring element 9 is formed as with slots S exempt from the support plane 3 sheet metal strip which is bent or folded and extends from the horizontal plane of the support level 3 away. The bending angle does not have to be approximately perpendicular (90 degrees), as shown. He may also have another suitable for the contact force K of the adjacent protective earth contact element 11 direction. Through these slots S and the common root area, the spring element 9 is resilient and can exert a contact force on the protective earth contact element 11.

The protective earth contact element 11 is formed as a separate part and rests on the spring element 9 and the support 10 on the spring element 9. It is also conceivable that the protective earth contact element 11 is formed integrally with the spring element 9 and forms the free end region of the spring element 9.

It is also clear how the stripped end of the electrical conductor 16 is clamped between the two clamping legs 15 of the formed as a spring clamp connection conductor terminal 13.

FIG. 5 shows a side view of the protective ground contact 1 from FIG. 3 and 4 , Here it is clear that the side webs 4a, 4b is bent from the plane defined by the support plane 3 horizontal plane obliquely downward and pointing away from the ground. The interior angle is about 110 degrees and should be in the range of about 90 degrees to 130 degrees. Tabs 5a, 5b project from these side webs 4a, 4b in the opposite direction, with the side webs 5a, 5b enclosing an (inner) angle of approximately 45 degrees. The tabs 5a, 5b are connected to the respective side web 4a, 4b via a curved connecting surface. In order for a receiving space or a trough is provided in the additional electrical conductors can be stored.

It is also clear that of the tabs 5a, 5b contact tongues 8 protrude in a direction opposite to the extension direction of the tabs 5a, 5b respectively opposite direction. The contact tongues 8 are bent inwardly at an angle of approximately 30 degrees +/- 10 degrees out of the plane of the associated tabs 5a, 5b.

It can also be seen that the end stops 7 are bent outwardly out of the plane of the respective tabs 5a, 5b. Likewise, the corners 6 of the tabs 5a, 5b are issued to provide a contour for contacting the carrier element.

Such a support element is usually formed as a metal profile, whose side walls have contours, in which the tabs 5a, 5b are clamped with their end stops 7.

It is also clear that the spring element 9 is formed as a transversely bent out of the support plane 3 spring tongue. The protective earth contact element 11 rests on the spring element 9, wherein the protective earth contact element 11 and the end portion of the spring element 9 with the support region 10 is approximately perpendicular to the support plane 3.

FIG. 6 shows a perspective view of the sheet metal element 2 for the protective earth contact 1 from Figures 3 and 4 , Here again it is clear that the spring element 9 provides a support for the separate protective earth contact element 11 at its free end with a bent material tongue.

In the perspective view of the sheet metal element 2 in FIG. 7 It is clearer that this support is formed by a bent out of the plane of the spring element 9 and facing away from the support surface 3 material lobes.

FIG. 8 shows a perspective view of a Abgriffsteckverbinders 17, which has a Isolierstoffgehäuse 18 and built-in conductor contact elements 19 for electrically conductive contacting of electrical conductors in current management profiles. These conductor contact elements 19 are, as the protective earth contact element 11 of the protective earth contact 1 movably mounted in the contact force direction K and spring-loaded with a spring element. Thus, a spring contact force of the contact tip of the conductor contact element 19 can be exerted on a voltage applied thereto electrical conductor.

It is clear that the conductor contact elements 19 are arranged in rows of webs 20, which are spaced apart by Nutzwischenräume 21. These ridge rows 20 then dip into grooves of a current-carrying profile to contact electrical conductors introduced therein.

It is also clear that conductor contact elements can also be used as separate insert parts 22 in the insulating material 18. The inserts 22 are adapted to the contour of the web rows 20.

The protective earthing contact 1 described above is inserted into the insulating housing 18 such that the protective earth contact element 11 for the protective earth contact 1 as well as the illustrated conductor contact elements 19 likewise protrude in a web row 20 with its contact tip 12 in order to contact a protective earth line arranged there.

At least one of the end faces of the insulating material housing 18 also has at least one conductor insertion opening 23 for introducing at least one electrical conductor to an associated conductor terminal contact of a conductor contact element 19.

FIG. 9 shows the tap connector 17 from FIG. 8 with a view of the bottom and incorporated therein protective earth contact 1. It is clear that the support plane 3 of the sheet metal element 2 rests on the underside of the insulating housing 18. The sheet metal element 2 can be connected there with the insulating material 18, for example, positively. For this purpose, latching nubs 24 can dive into openings of the sheet metal element 2 in order to fasten the sheet metal element 2 to the insulating material housing 18.

It can be seen that the side webs 4a, 4b protrude in the opposite direction to the extension direction of the web rows 20 and the adjoining straps 5a, 5b protrude beyond the plane of the side walls of the insulating housing 18. The side bars 4a, 4b and tabs 5a, 5b, which are at an angle to one another, form a depression or receiving lug which is suitable for receiving electrical lines led past the insulating housing 18 of the tapping plug connector 17.

At the bottom of the insulating housing 18 also foot sections 25 are also present, which are aligned in a direction opposite to the tabs 5a, 5b direction zuweisend on this.

The insulating housing 18 also has support feet 26 on all four corners.

It can also be seen that on the front side, a conductor insertion opening 27 is introduced into the insulating material housing 18, which is open to the conductor terminal 13 of the protective earth contact 1.

FIG. 10 shows a perspective view of the insulating material 18 without the conductor contact elements 19 inserted therein and without the protective earth contact 1. It is clear that the insulating housing 18 receiving spaces 28 for receiving inserts 22 has. Furthermore, the web portions 20 defining protruding finger-like webs 29 are provided, which are arranged at a distance from each other in web rows. It can also be seen that a receiving opening 30 for the protective earth contact element 11 of the previously described protective earth contact 1 of the insulating housing is introduced adjacent to the left side wall. This protective earth contact element 11 can thus be guided or received slidably in the insulating housing 18. It is clear that adjacent thereto, the conductor insertion opening 27 is introduced for an electrical protective earth conductor, which leads to a spring clamp connection or conductor connection 13 arranged in this region when the protective earth contact 1 is inserted into the insulating material housing 18.

FIG. 11 shows a perspective sectional view of an embodiment of a Abgriffsteckverbinders 17 with a three-piece protective earth contact 1. It is clear that the separate protective earth contact element 11 is slidably received in the receiving opening 30 of the insulating housing 18. The protective earth contact element 11 has a widened end 31, which rests on the bearing surface of a spring element 32. In this embodiment, the spring element 32 is formed from a Federblechteil which is inserted into a turn separate sheet metal element 2. For this purpose, a supporting plane 3 of the sheet metal element 2 is a plug-in opening 33 is provided, on which the tongue 38 of the spring element 32 is inserted, electrically conductively contacted and clamped. The plug-in opening 33 may have spring tabs for this purpose. It is also conceivable that the spring element 32 in the tongue 38 has at least one exposed clamping spring.

By the spring force of the spring element 32, the protective earth contact element 11 is pressed with its contact tip 12 in the extension direction of the finger-like webs 29 to the outside. It is clear that the protective earth contact element 11 is longer than the conductor contact elements 19, so that the contact tip 12 protrudes further outwards. In this way, the protective earth contact element 11 is leading to the other conductor contact elements 19. The protective earth contact 1 is first made in this way when attaching the Abgriffsteckverbinders 17 to a power guide profile before the conductor contact elements 19 contact their respective electrical conductors.

It is also clear that the sheet metal element 2 is arranged on the underside of the insulating housing 18 below the webs 29.

In a similar way is also in the FIGS. 3 to 5 shown embodiment of the protective earthing contact 1 in the insulating material 18 received. The only difference is that the in FIG. 11 illustrated protective earth contact 3-piece and in the previous embodiments is 2-piece. The spring element must therefore not as in FIG. 11 be shown as a separate part. It may also be a bent from the sheet metal element 2 spring element 9.

FIG. 12 shows a side sectional view of the tapping connector 17 from FIG. 11 , Here it is once again clear that the protective earth contact element 11 is displaceably mounted in the receiving opening 30 of the insulating housing 18. He can not only move back and forth in the direction of the contact force K, but also slightly tilt and move in the tolerance range.

It can also be seen that the widened lower end 31 of the protective earth contact element 11 has a concave bearing surface for the spring element 32. It can be seen that the spring element 32 is a leg spring integrally formed with a sheet metal part 34, which has a spring bow 35 and an adjoining spring arm 36.

It can be seen that the tabs 5b of the sheet metal element 2 protrude laterally in the lower area and the spring contact tongues 8 point in the opposite direction to the contact force K down.

It can also be seen that contact inserts 22 with conductor contact elements 19 can be inserted into the insulating housing 18 in order in this way to provide further contact connections for current-carrying electrical lines of a current-carrying profile in addition to the protective earth contact element 11 for a protective earth line.

FIG. 13 shows a perspective view of the second embodiment of the protective earth contact 1 from FIG. 11 and 12 with its 3-part construction. It can be seen that in the support plane 3 of the sheet metal element 2, a plug-in opening 33 is provided with spring tabs, in which a tongue 38 of the spring element 32 is inserted. It is also clear that on this spring element 32, a conductor connection contact 13 is formed in the form of a Federklemmanschlusses with two obliquely facing each other exhibited clamping legs 15. Furthermore, integrally formed with the sheet metal part of the spring element 32 is a U-shaped bent leg spring, on which the protective earth contact element 11 is supported.

The sheet metal element 2 can be designed so that 3 plug-in receptacles or plug-in openings 33 is disposed on opposite outer areas of the support surface. In this way, the position of the spring element 32 and the protective earth contact element 11, if necessary, be adapted depending on the intended plug alignment. It is also possible to use two spring elements 32 so as to provide a redundant protective earth contact with two protective earth contact elements 11.

FIG. 14 shows a perspective view of the sheet metal element 2 for the protective ground contact 1 FIG. 13 , In this case, the openings 37 in the support plane 3 are still visible, which are provided for non-positive or positive fastening of the sheet metal element 2 to an insulating housing 18 of a Abgriffsteckverbinders 17.

For construction of the tabs 5a and 5b, reference may be made to the previously described embodiment.

FIG. 15 shows a perspective view of the spring element 9 and the separate protective earth contact element 11 for the further embodiment. It is clear that the spring element 9 is integrally formed from a sheet metal part 34. A tongue 38 protrudes from the central portion of the sheet metal part 34. The tongue 38 has a raised portion 39 to optimize the Federkraftklemmung to the spring tabs of the insertion opening 33. The raised portion 39 also forms a stiffening of the tongue 38 from.

It is also clear that the clamping legs 15 of the conductor terminal 13 are simply formed as bent from the central portion of the sheet metal part 34 material lids and aligned obliquely facing each other.

The leg spring 32 is also formed from a bent from the central portion of the sheet metal part 34 sheet metal portion. The free end is convex so that the concave support surface 31 of the protective earth contact element 11 is supported there.

FIG. 16 shows the representation of the spring element 32 with the protective earth contact element 11 FIG. 15 from the other side. It is again clear that the clamping legs 15 are issued obliquely assigning zuweisend so as to form a spring clamp connection for an electrical conductor 16.

Visible is also the survey 39 in the tongue 38, the lower end is tapered.

It is also clear that a locking tab 40 is issued from the central portion of the sheet metal part 34 obliquely outward. A support and end stop and a support of the spring element 9 relative to the sheet metal element 2 in the inserted state by an end edge edge of the sheet metal component of the spring element 9, for example, by the sheet metal element 2 facing Edge formed below the conductor terminal 13.

FIG. 17 shows a perspective view of a Abgriffsteckverbinders 17, which is placed on a current-carrying profile 41. The current-carrying profile 41 has electrical conductors 42, for example in the form of conductor bars, which are arranged alternately offset in grooves 43 in the illustrated embodiment on two levels and extend parallel to each other in the longitudinal direction. The current-carrying profile 41 is arranged in a carrier element 44. It is latched with locking tabs 45 on locking contours 46 of the support member 44. The support member 44 is formed as a metal trough, which extends in the longitudinal direction and on the side opposite to the bottom surface 47 with the current-carrying profile 41 lying thereon, an opening. This opening can be covered with a cover part 48 of the support member 44.

The tap connector 17 then rests with its support feet 26 on the cover part 48. It can be seen that the side walls 49 of the cover part 48 have U-shaped folded over edge edges 50. The tabs 5a, 5b of the protective earth contact 1 are resiliently seconded between the bottom of the cover part 48 and the folded-over edges 50. The resilient contact tongues 8 of the tabs 5a, 5b extend obliquely to the support surface of the cover member 48 and lie there on. Thus, the tapping connector 17 is latched to the lid member 48 and the protective earth contact 1 is electrically connected to the lid member 48 to provide a protective earth for the support member 44.

It can be seen that the outer corners 6 of the straps 5a, 5b, which are bent away towards the outside from the support plane 3, provide a contour issued for contacting the carrier element 44. The tabs 5a, 5b dig with their flared corners 6 in the sheet material of the side walls 50 of the cover part 48 of the support member 44 a.

It is further shown that bundles of electrical conductors 51 are inserted into a respective trough formed by the tabs 5a, 5b and the side webs 4a, 4b of the sheet metal part of the protective earth contact 1 which are connected to a bend. The troughs are also limited by the support feet 26, on which the bundles of electrical conductors 51 can rest laterally.

Claims (15)

Protective earth contact (1) for the electrically conductive connection of a protective earth line of a current-carrying profile with an electrically conductive carrier element for the current-carrying profile, wherein the protective earth contact (1) has a sheet-metal element (2) which is designed to rest on a tap-off connector (17) which can be plugged onto the current-carrying profile, characterized in that the protective earthing contact (1) has a protective earth contact element (11) which is relatively movable with a spring element (9, 32) to the sheet metal element (2) and for electrically conductive contacting the protective earth line of the current-carrying profile by a frictional connection of the protective earth Contact element (11) with the protective earth line by means of a by the spring element (9, 32) applied spring force is formed. Protective earth contact according to claim 1, characterized in that the protective earth contact element (11) is designed as a needle contact. Protective earth contact according to claim 1 or 2, characterized in that the spring element (9) is formed integrally with the sheet metal element (2). Protective earth contact (1) according to claim 2 or 3, characterized in that the spring element (9) is one of a support plane (3) of the sheet metal element (2) and exempted from the support plane (3) bent spring tongue. Protective earth contact (1) according to claim 2, 3 or 4, characterized in that the protective earth contact element (11) is formed integrally with the spring element (9) and the sheet metal element (2). Protective earth contact (1) according to one of claims 1 to 4, characterized in that the protective earth contact element (11) is a separate from the sheet metal element (2) part which bears against the spring element (9, 32). Protective earth contact (1) according to one of the preceding claims, characterized in that the sheet metal element (2) has a conductor connection (13) for clamping an electrical conductor (16). Protective earth contact (1) according to claim 7, characterized in that the conductor connection (13) is designed as a spring clamp connection with at least one clamping leg (15). Protective earth contact (1) according to one of the preceding claims, characterized in that the sheet metal element (2) has tabs (5a, 5b) which are designed to be clamped to the carrier element and arranged on opposite sides of the sheet metal element (2), wherein the support plane (3) in each case a side web (4a, 4b) protrudes, which in a to the plane of the support plane (3) spanned horizontal plane extending tab (5a, 5b) passes. Protective earth contact (1) according to claim 9, characterized in that the tabs (5a, 5b) at least one on the tab (5a, 5b) bent end stop (7) for positive locking of the tab (5a, 5b) have on the support element. Protective earth contact (1) according to any one of claims 9 or 10, characterized in that on the tabs (5a, 5b) resilient contact tongues (8) protrude in a direction opposite to the extension direction of the tab (5a, 5b) opposite direction of the support surface (3) , Tap connector (17) with an insulating housing (18), with conductor contact elements (19) for the electrically conductive contacting of electrical conductors of a current-carrying profile, and having a protective earth contact (1) according to one of the preceding claims for the electrically conductive connection of a protective earth conductor of the current-carrying profile to an electrically conductive carrier element in which the current-carrying profile is arranged, characterized in that the protective earth contact (1) is a protective earth contact element ( 11) which is relatively movable with a spring element (9, 32) to the sheet metal element (2) and for electrically conductive contacting the protective earth conductor of the current-carrying profile by a non-positive connection of the protective earth contact element (11) with the protective earth line by means of a by the spring element ( 9, 32) applied spring force is formed. Tap connector (17) according to claim 12, characterized in that the conductor contact elements (19) are movably mounted in the insulating housing (18) and a spring element between a support of the insulating material (18) and the conductor contact element (19) is arranged, wherein the conductor contact element (19) can be acted upon by the spring element with a spring force. Tap connector (17) according to claim 12 or 13, characterized in that the insulating housing (18) has a plurality of mutually parallel webs (29) and the conductor contact elements (19) in the webs (29) and the protective earth contact element (11 ) is also displaceably mounted in one of the webs (29). Tap connector (17) according to any one of claims 12 to 14, characterized in that the protective earth contact element (11) is leading in relation to the conductor contact elements (19).

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