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EP-3477792-B1 - PICKUP CONNECTOR AND GROUNDING CONTACT FOR SAME

EP3477792B1EP 3477792 B1EP3477792 B1EP 3477792B1EP-3477792-B1

Inventors

  • Stolze, Herr Henry
  • BIES, Herr Henryk

Dates

Publication Date
20260513
Application Date
20181012

Claims (14)

  1. Protective earth contact (1) for electrically conductive connection of a protective earth conductor of a current-carrying profile to an electrically conductive carrier element for the current-carrying profile, wherein the protective earth contact (1) comprises a sheet metal element (2) which is designed to be placed against a tap connector (17) which can be plugged onto the current-carrying profile, and comprises a protective earth contact element (11) which is relatively movable to the sheet metal element (2) by means of a spring element (9, 32) and is designed for electrically conductive contacting of the protective earth conductor of the current-carrying profile by means of a force-fit connection of the protective earth contact element (11) to the protective earth conductor by means of a spring force applied by the spring element (9, 32), wherein the protective earth contact element (11) is designed as a needle contact, characterized in that the needle contact has a tip for contacting the protective earth conductor and in that the sheet metal element (2) comprises tabs (5a, 5b) which are designed for clamping to the carrier element for electrically conductive connection of the sheet metal element (2) to the carrier element.
  2. Protective earth contact (1) according to claim 1, characterized in that the spring element (9) is formed integrally with the sheet metal element (2).
  3. Protective earth contact (1) according to one of the preceding claims, characterized in that the spring element (9) is a spring tongue that is free from a support plane (3) of the sheet metal element (2) and bent away from the support plane (3).
  4. Protective earth contact (1) according to one of the preceding claims, characterized in that the protective earth contact element (11) is formed integrally with the spring element (9) and the sheet metal element (2).
  5. Protective earth contact (1) according to one of claims 1 to 3, characterized in that the protective earth contact element (11) is a part separate from the sheet metal element (2) which rests against the spring element (9, 32).
  6. Protective earth contact (1) according to one of the preceding claims, characterized in that the sheet metal element (2) comprises a conductor connection (13) for clamping an electrical conductor (16).
  7. Protective earth contact (1) according to claim 6, characterized in that the conductor connection (13) is designed as a spring clip connection with at least one clamping leg (15).
  8. Protective earth contact (1) according to one of the preceding claims, characterized in that the tabs (5a, 5b) are arranged on opposite sides of the sheet metal element (2), wherein a side web (4a, 4b) projecting from the support plane (3) in each case, which merges into a lug (5a, 5b) extending into a horizontal plane spanned by the support plane (3).
  9. Protective earth contact (1) according to claim 8, characterized in that the tabs (5a, 5b) comprises at least one end stop (7) bent on the tab (5a, 5b) for form-fitting locking of the tab (5a, 5b) on the support element.
  10. Protective earth contact (1) according to one of claims 8 or 9, characterized in that spring-loaded contact tongues (8) protrude from the tabs (5a, 5b) in a direction opposite to the direction of extension of the tab (5a, 5b) away from the support surface (3).
  11. Tap connector (17) comprising an insulating housing (18), conductor contact elements (19) for electrically conductive contacting of electrical conductors of a current-carrying profile, wherein the electrical conductors are arranged in grooves of the current-carrying profile, and a protective earth contact (1) according to one of the preceding claims for electrically conductive connection of a protective earth conductor of the current-carrying profile arranged in one of the grooves to an electrically conductive carrier element in which the current-carrying profile is arranged, characterized in that the protective earth contact (1) comprises a protective earth contact element (11) which is relatively movable to the sheet metal element (2) by means of a spring element (9, 32) and is designed for electrically conductive contacting of the protective earth conductor of the current-carrying profile by a force-fit connection of the protective earth contact element (11) to the protective earth conductor by means of a spring force applied by the spring element (9, 32), wherein the protective earth contact element (11) is designed as a needle contact and wherein the needle contact has a tip for contacting the protective earth conductor.
  12. Tap connector (17) according to claim 11, characterized in that the conductor contact elements (19) are mounted movably in the insulating material housing (18) and a spring element is arranged between a support of the insulating material housing (18) and the conductor contact element (19), wherein the conductor contact element (19) can be acted upon by a spring force by means of the spring element.
  13. Tap connector (17) according to claim 11 or 12, characterized in that the insulating material housing (18) comprises a plurality of webs (29) extending parallel to one another and the conductor contact elements (19) are mounted in the webs (29) and the protective earth contact element (11) is also displaceably mounted in one of the webs (29).
  14. Tap connector (17) according to one of claims 11 to 13, characterized in that the protective earth contact element (11) is ahead of the conductor contact elements (19).

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 support element for the current-carrying profile, wherein the protective earthing contact has a sheet metal element and a protective earth contact element which is movable relative to the sheet metal element by means of a spring element and is designed for electrically conductive contacting of the protective earth conductor of the current-carrying profile by means of a force-fit connection of the protective earth contact element with the protective earth conductor arranged in a groove of the current-carrying profile by means of a spring force applied by the spring element. The invention further relates to a tap 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 earthing contact for electrically conductive connection of a protective earth conductor of the current-carrying profile with an electrically conductive support element in which the current-carrying profile is arranged. For distributing electrical energy in a building and connecting luminaires at selected positions, busbar systems with profile elements are known. These elements have a comb-like cross-section with webs and the grooves formed by them, and electrical conductors are accommodated in the grooves. In such busbar profiles, these electrical conductors are received in the grooves, for example, on the side walls of the webs, and can be electrically connected by a tap connector with contacts projecting into the grooves. DE 10 2011 056 043 B4 Figure 1 shows a busbar tap element with an insulating housing and an electrically conductive contact arm designed for contacting an electrical conductor of a comb-like busbar. An electrically conductive retaining arm extends parallel to the contact arm, with a space between the contact arm and the retaining arm to accommodate a comb tooth of the busbar. The electrical conductors are electrically contacted laterally by the contact arm. DE 10 2015 114 741 A1 The figure reveals a connector for end-mounting onto a conductor profile. In its upper, lateral area, the connector has a raised protective earth contact area with a plug-in contact for electrically conductive connection to the conductor profile. The cover section of the connector part features a corresponding protrusion with a contact pin that interacts with a protective earth contact of the connector. DE 9404548 U1 discloses a lighting arrangement in which a protective conductor connection is made with a prefabricated mounting unit consisting of a connecting cable and a clamping element. DE 20 2008 001 961 U1 Figure 1 shows a contacting system for linear lighting systems in which an electrically conductive conductor of the current-carrying profile is designed as a protective conductor. A contact finger of the contact device acts as a pre-connecting electrical connection when the contact device is placed on the current-carrying profile. This contact finger establishes a positive electrical connection between the protective conductor of the current-carrying profile and the mounting rail. EP 1 475 565 B1 Disclosing a lighting arrangement, in which an earthing plate is arranged in the area of the electrical adapter, serving as the electrical connection between the protective conductor and the mounting rail. A plug contact of the earthing plate, which is molded parallel to clamping fingers on the connection surface in the insertion direction, engages an opening of a socket of the electrical adapter when plugged in and makes contact with the protective conductor contact. EP 1 361 632 A1 The document discloses a support element comprising a fastening element for attachment to the busbar and a space for routing additional wires or cables. The support has a U-shaped cross-section and features undercuts at at least one end of the U-legs, forming a space for routing wires or cables. JP S56 50069 U The diagram reveals a conductor connection contact in which the rear end of a conductor of the same width is bent obliquely from the back to the front to contact and conduct another conductor. The contact portion is bent obliquely upwards at the front. In the middle of the conductor is a bent portion for locking the connection, a downward-bent cable stop in the form of a thick plate, an open upper portion for cable insertion, a hanging portion, a lower surface portion, and a front portion. DE 20 2010 004783 U1 Disclosing a busbar adapter for attaching a luminaire or spotlight to a U-shaped busbar and for connecting conductors running within the busbar, the adapter has a T-shaped housing in cross-section. It comprises a central part designed to engage with the busbar and a base part adjoining the central part and oriented transversely to it. When