EP3293833A1 - Current rail connector - Google Patents

Abstract

A busbar connector for the electrically conductive connection of lines (7) of comb-like current-carrying profiles (2), which are accessible via via ridge webs (6) of the current-carrying profile (2) laterally limited grooves (8) will be described. The busbar connector has plug contacts (1) which are each designed to be plugged into a groove (8) of a current-carrying profile (2). The plug contacts (1) each have a contact lug (9), a spring contact tongue (10) protruding from the plane of the contact lug (9) and a stop surface (11) projecting from the plane of the contact lug (9). The spring contact tongue (10) is arranged in the space between the stop surface (11) and the free end of the contact lug (9).

Description

The invention relates to a busbar connector for electrically conductive connection of lines of comb-like current-carrying profiles, which are accessible via ridges of the current-carrying profile laterally limited grooves, wherein the busbar connector has plug contacts, which are each designed for insertion into a groove of a current-carrying profile.

Such busbar connectors are used in particular for lighting systems in buildings in order to electrically connect lines of comb-like current-carrying profiles to one another. With such current management profiles devices, in particular lights or other energy and / or data to be supplied with easily variable installation site can be supplied inexpensively, easily and visually appealing.

DE 10 2010 032 383 B4 discloses a bus bar connector for electrically conductive connection of associated leads received in open grooves of a comb-like current-carrying profile of two adjacent bus bars and extending in the longitudinal direction of the bus bars. The housing of the busbar connector has a length compensating portion, which connects two housing parts relative to each other movable. The busbar connector is plugged from the top of the current guide profiles on this.

US 3,831,130A shows a coupling element for current-carrying profiles, which is inserted frontally into the current-carrying profiles. The electrical leads of the current-carrying profiles are contacted in an electrically conductive manner by pairs of opposing leaf spring contacts.

US 4,053,194 A discloses a busbar connector for frontal insertion in busbars with protruding laterally from tabs blade contacts.

DE 35 02 864 C2 shows a device for blunt electrical connection of the ends of parallel juxtaposed busbars in busbar trunking. The connecting pieces are formed as flexible metal bands, which are frictionally clamped with contact ends between the busbar ends and Isolierstoffstücken.

Proceeding from this, it is an object of the present invention to provide an improved busbar connector with which the risk of contact movements between the spring contact tongue and the thus contacted line of a current-carrying profile is further reduced.

The object is achieved with the busbar connector having the features of claim 1. Advantageous embodiments are described in the subclaims.

It is proposed that the plug contacts of the busbar connector each have a contact lug, a projecting from the plane of the contact lug spring contact tongue and projecting from the plane of the contact lug stop surface, wherein the spring contact tongue is disposed in the space between the stop surface and the free end of the contact lug.

The electrically conductive contacting of the busbar connector is thus effected by a protruding from a contact tab spring contact tongue. The position fixation of the spring contact tongue on the thus contacted line is improved by a stop surface, which also protrudes from the contact lug and forms a stop between the contact lug and the ridge of the current-carrying profile. With the help of this stop surface of the insertion of the contact lug is limited in the direction of extension of the comb webs in the current-carrying profile inside. With that you can Contact movements between the spring contact tongue and contacted by the spring contact tongue line can be prevented by means of the stop surface.

The spring contact tongue can be exposed from the contact lug and connected in a root area with the contact lug. The spring contact tongue is thus formed in one piece from the contact lug. The contact lug then has in the area of the exposed spring contact tongue at least one remaining web which merges into the root area. Thus, a current transition between the spring contact tongue and the contact lug is ensured and the spring contact tongue by the root area and the adjoining web stably supported on the contact lug.

In a corresponding manner, the stop surface can be exposed from the contact lug and connected to a root region with the contact lug. The contact lug then has in the area of the exposed stop surface at least one remaining leading to the spring contact tongue and the free end web. In this way, the stop surface is integrally formed from the contact lug and it is provided in the region of the stop surface, a current-conducting cross section through the web.

The stop surface may be arranged perpendicular to the contact lug. Thus, the risk of elastic movement of the stop surface in the contact state is counteracted and given a precise contact position of the contact lug, which rests with the stop surface on the end face of a ridge web of the contacted current-carrying profile.

The stop surface may also be designed differently than a vertically bent tab. Thus, it is conceivable that the stop surface is formed by an obliquely placed against the axial end of the line material portion. This is then aligned opposite to the spring contact tongue. Conceivable are also variants in which the stop surface is formed by a crank or an offset of the contact lug.

Unlike a slanted stop surface further bending out of a vertical stop surface is then difficult.

The contact lug of a plug contact can each have a spring contact tongue at the opposite end sections. Thus, two in a flight one behind the other arranged flow guide profiles with the aid of the opposite end portions of the contact lug and the spring contact tongues arranged thereon can be electrically conductively contacted with each other.

In this case, the opposing spring contact tongues can be aligned with their ends facing each other. With an increase in the distance between the opposing contacts to the contacted line of the current-carrying profile, the spring contact tongues are then clawed in opposite directions further with the respective contacted line. In a distance reduction is ensured by the opposite orientation of the spring contact tongues and by the abutment surfaces on the contact lug that no relative movement between the spring contact tongue and line, since the contact lug with the abutment surface then rests against a current-carrying profile and the spring contact tongue faces the abutment surface.

The contact lug may have length compensating bends in an area between the opposing spring contact tongues. Thus, the risk of contact displacements between spring contact tongue and line is further reduced if the length of the current-carrying profiles or the length of the lines arranged thereon changed by heat.

If adjacent to each spring contact tongue a stop surface is arranged, then a contact movement is prevented at each spring contact tongue itself.

It is also conceivable that the contact lug at its end, which is opposite to the spring contact tongue, has a blade contact. Thus, the contact lug on the one hand for electrically conductive contacting a line of a current-carrying profile using the spring contact tongue and on the other hand for plug-in contact with a Connectors, such as an opposite busbar connector for an adjacent power supply profile can be used. For a pair of complementary bus bar connectors, the contact tab of a bus bar connector may have a fork contact at its end opposite the spring contact tongue, a blade contact, and the contact tab of the complementary connector at its end opposite the spring tongue. A pair of blade and fork contacts thus provide a plug connection for a complementary pair of bus bar connectors.

The spring contact tongue may extend with its free end toward the associated adjacent stop surface. In a contact movement then the spring contact tongue digs either further in the line or it is a stop formed with the stop surface, by which a relative movement between the spring contact tongue and line is prevented.

Figur 1

- perspektivische Ansicht einer Anordnung aus Stromführungsprofil in einem Haltetrog und einem Stromschienenverbinder an dem Stromführungsprofil;

Figur 2

- perspektivische Ansicht des Stromführungsprofils mit Stromschienenverbinder;

Figur 3

- perspektivische Ansicht eines Stromschienenverbinders;

Figur 4

- perspektivische Ansicht des Stromschienenverbinders aus Figur 3 mit daran anliegender Leitung;

Figur 5

- Skizze eines Stromschienenverbinders mit Federkontaktzungen und Anschlagflächen an einander gegenüberliegenden Enden;

Figur 6

- Skizze einer Variante des Stromschienenverbinders mit einer durch eine Anschlagzunge gebildeten Anschlagfläche;

Figur 7

- Skizze einer Variante des Stromschienenverbinders mit durch Abkröpfung der Kontaktfahne gebildeten Anschlagfläche.

The invention will be explained in more detail with reference to an embodiment with the accompanying drawings. Show it:

FIG. 1

- Perspective view of an arrangement of current-carrying profile in a holding trough and a busbar connector to the current-carrying profile;

FIG. 2

- Perspective view of the current-carrying profile with busbar connector;

FIG. 3

- Perspective view of a busbar connector;

FIG. 4

- Perspective view of the busbar connector FIG. 3 with adjoining line;

FIG. 5

- Sketch of a busbar connector with spring contact tongues and stop surfaces at opposite ends;

FIG. 6

- Sketch of a variant of the busbar connector with a stop surface formed by a stop tongue;

FIG. 7

- Sketch of a variant of the busbar connector with stop surface formed by bending the contact lug.

FIG. 1 allows a perspective view of an arrangement of a plug contact 1 and a power guide profile 2 recognize. The current-carrying profile 2 is clamped in a metal trough. The example. Made of plastic material current guide profile 2 has this Raststege 4, which dive into a detent recess 5 of the holding trough 3 and lock the current-carrying profile 2 to the holding trough 3.

The current-carrying profile 2 has a plurality of adjacently arranged comb webs 6, which extend parallel to each other. On the side walls of the comb webs 6 electrical lines 7 are arranged. These electrical lines 7 may be, for example, in the comb webs 6 inserted busbar bars. In the illustrated embodiment, each electrical lines are arranged offset in height to each other on the opposite side walls of a comb web 6. These lines 7 are on the limited by adjacent comb webs 6 grooves. 8 accessible. By a shrinking process of the plastic material of the current-carrying profile 2, the metallic lines 7 can protrude axially at least to a small extent from the end face of the current-carrying profile 2.

In order to now contact the electrical lines 7 via a plug connection, a busbar connector is provided which has at least one plug-in contact 1 in an insulating material housing (not shown). The plug contacts 1 are designed to be inserted from the end face of the current-carrying profile 2 in each case in a groove 8. In this case, the plug contact 1 extends in the longitudinal direction of the associated line. 7

It is clear that the plug contact 1 has a contact lug 9, at the end of a spring contact tongue 10 protrudes from the plane of the contact lug 9.

It can be seen that a stop surface 11 protrudes from the contact lug 9 adjacent to the free end of the spring contact tongue 10. In the illustrated plug state, this abutment surface 11 bears against the contact web 6 or the line 7 to be clamped against the contact web 6. This prevents further insertion of the plug-in contact 1 into the groove 8 of the current-carrying profile 2. The spring contact tongue 10 extends with its freely movable end in the direction of this stop surface and can claw with the clamping edge 12 at the free end of the spring contact tongue 10 on the line 7 to be clamped. In this way, pulling out of the plug contact 1 is prevented. A contact movement between the clamping edge 12 of the spring contact tongue 10 and the contacted electrical line 7 is further prevented by the stop surface 11. At a thermal expansion, for example, the line 7 and / or the comb web 6 is prevented by the adjoining the comb web 6 and the line 7 abutment surface 11 that the spring contact tongue 10 moves out of the illustrated clamping state. It is held by the stop surface 11 rather in the verkrallten clamping state.

A contact movement between the spring contact tongue 10 and to be contacted line 7 is thus on the one hand by the stop surface 11 and on the other hand by the Alignment of the associated spring contact tongue 10 reaches with its free, the clamping edge 12 bearing end towards stop surface 11.

FIG. 2 shows a perspective view of the current-carrying profile 2 with a plug-in contact plugged therein 1. Here is again clear that the plug-in contact 1 is held firmly at a movement in the extension direction of the spring contact tongue 10 on the contacted line 7, since the clamping edge 12 then on the contacted line 7 digs. The direction of extension of the spring contact tongue 10 is the direction of the contact lug 9 of the root portion 15, ie the connection of the spring contact tongue 10 to the contact lug 9, to the clamping edge 12 of the spring contact tongue 10. In an opposite movement of the plug contact 1 further into the groove 8 in the Slide spring contact tongue 10 along the line 9. This can affect the quality of the electrical contact between plug contact 1 and electrical line 7. By the stop surface 11 such further movement is prevented with a therefore going sliding of clamping edge 12 and line 7 to each other. With the help of this protruding from the plane of the contact lug 9 abutment surface and arranged in the space between the stop surface 11 and the free end of the contact lug 9 spring contact tongue 10 thus a contact movement between the spring contact tongue 10 and line 7 is prevented in the illustrated plug state.

FIG. 3 shows a perspective view of the plug contact 1. In the illustrated embodiment of the plug contact 1, the spring contact tongue 10 is provided with the associated, adjacent stop surface 11 on one side. The spring contact tongue 10 opposite end is formed as a blade contact 13. The width of this blade contact 13 is, for example, less than the width of the opposite free end of the plug contact 1 with the spring contact tongue 10 arranged thereon.

It is clear that the spring contact tongue 10 and the stop surface 11 are integrally formed from the sheet material of the plug contact 1. For this purpose, the spring contact tongue 10 is exposed (eg cut or punched free) and bent out of the plane of the contact lug 9. At least one, in which illustrated embodiment on two opposite sides webs 14. The spring contact tongue 10 is connected in a root region 15 with the end portion of the contact lug 9. This root region 15 then merges into the webs, which extend in the direction of the opposite blade contact 13.

In a corresponding manner from the plane of the contact lug 9, the stop surface 11 is exposed and bent out. This contact surface 11 is in particular perpendicular to the plane of the contact lug 9. The spring contact tongue 10 extends with its freely movable, the clamping edge 12 bearing end in the direction of the adjacent, associated stop surface 11. The stop surface 11 is in a root region 16 in the contact lug 9 on , At the root region 16, at least one web 17 connects, which extends to the adjacent webs 14 in the region of the spring contact tongue 10 back. Alternatively, the root portion 16 may also be disposed adjacent to the webs 14, so that the lateral an opening in the contact lug 9 limiting webs 17 are arranged on the side of the bent-out abutment surface 11, which faces away from the spring contact tongue 10.

The spring contact tongue 10 opposite end of the contact lug 9 may also carry a different type of connector, such as. A spring terminal connection or a fork contact and are connected directly to an electrical conductor, for example with a crimp contact or a solder connection. With the help of a fork contact a complementary pair of busbar connectors is created, which can be plugged in each case on the front side on a current-carrying profile and then plug-in contact with each other. In this case, then a fork contact (not shown) of a plug-in contact 1 would electrically conductively come into electrically conductive contact with the blade contact 13 of the complementary plug-in contact 1.

FIG. 4 shows a perspective view of the plug contact 1 FIG. 3 It is clear that the spring contact tongue 10 rests with its clamping edge 12 on the electrical line 7 to be contacted and is aligned at an acute angle to the electrical line 7. When the electrical line 7 contracts in operation due to the influence of heat and becomes shorter, then the clamping edge 12 would dig into the adjacent line 7. A contact movement between the spring contact tongue 10 and line 7 is almost impossible in this direction anyway. If now the electrical line 7 expands, then such an expansion movement is limited and / or prevented by the stop surface 11, which forms a stop for the electrical line 7. The spring contact tongue 10 thus remains clawed to the electrical line 7. The stop position, in which the electrical line 7 rests against the stop surface 11, is thus possibly achieved only in the course of operation of a lighting device equipped with the busbar connector according to the invention.

FIG. 5 can recognize an embodiment of a plug-in contact 1 for a busbar connector 1, which is constructed in principle as the previously described plug-in contact. It is clear that at the opposite ends of the contact lug 9 each a spring contact tongue 10 protrudes. Adjacent to each of a spring contact tongue 10, a stop surface 11 is then arranged, which protrudes from the plane of the contact lug 9. The stop surface 11 is perpendicular to the contact lug 9 (90 degrees +/- 5 degrees). The spring contact tongue 10 and the stop surface 11 protrude from the contact lug 9 preferably in each case in the same direction and are each assigned to the same electrical line. The associated spring contact tongue 10 extends with its free, the clamping edge 12 bearing end in the direction of the adjacent stop surface 11. The pair of spring contact tongues 10 at the opposite ends of the contact lug 9 is aligned facing each other and protrudes at an acute angle obliquely from the Level of the contact lug 9 from.

FIG. 6 shows a sketch of a variant of a contact lug 9 for a busbar connector. In this case, in addition to the spring contact tongue 10, a stop tongue 18 is exposed from the contact lug 9 and bent out of the plane of the contact lug 9. The spring contact tongue 10 and the stop tongue 18 are aligned opposite to each other. The distance between the stop surface 11 formed at the free end of the stop tongue 18 to the clamping edge 12 of the adjacent spring contact tongue 10 is thus smaller than the distance of the root portion 15 in the transition of the Spring contact tongue 10 to the contact lug 9 to the root area 16 in the transition of the stop tongue 18 to the contact lug. 9

FIG. 7 shows a sketch of another variant of a contact lug 9 for a busbar connector, in which the contact lug is bent or has a plane offset by bending. By the bend 19, a stop surface 11 is formed on the contact lug 9. It can be seen that the contact lug 9 has an out of the main plane of the contact lug 9 bent portion, which is then returned with a transverse to the main plane of the contact lug 9 bent portion in the main plane. This bent back, transverse to the main plane section provides the stop surface 11 ready.

Claims (11)

Busbar connectors for the electrically conductive connection of cables (7) of comb-like current-carrying profiles (2) which are accessible via ridges (6) of the current-carrying profile (2) laterally limited grooves (8), wherein the busbar connector plug contacts (1) has, for insertion each formed in a groove (8) of a current-carrying profile (2), characterized in that the plug contacts (1) each have a contact lug (9), one of the level of the contact lug (9) projecting spring contact tongue (10) and one of the plane the contact lug (9) projecting abutment surface (11), wherein the spring contact tongue (10) in the space between the stop surface (11) and the insertable in the respective groove free end of the contact lug (9) is arranged. Busbar connector according to claim 1, characterized in that the spring contact tongue (10) from the contact lug (9) exposed and in a root region (15) with the contact lug (9) is connected, wherein the contact lug (9) in the region of the exposed spring contact tongue (10 ) has at least one remaining, in the root area (15) merging web (14). Busbar connector according to claim 1 or 2, characterized in that the abutment surface (11) is exposed from the contact lug (9) and connected to a root region (16) with the contact lug (9), wherein the contact lug (9) in the region of the exposed stop surface (11) has at least one remaining, the spring contact tongue (10) and the free end leading web (17). Busbar connector according to one of the preceding claims, characterized in that the stop surface (11) is arranged perpendicular to the contact lug (9). Busbar connector according to one of the preceding claims, characterized in that the contact lug (9) of a plug contact (1) at the opposite end portions in each case has a spring contact tongue (10). Busbar connector according to claim 5, characterized in that the mutually opposite spring contact tongues (10) are aligned with their ends facing each other. Busbar connector according to claim 5 or 6, characterized in that the contact lug (9) has length compensation bends in a region between the mutually opposite spring contact tongues (10). Busbar connector according to one of claims 5 to 7, characterized in that adjacent to each spring contact tongue (10) a stop surface (11) is arranged. Busbar connector according to one of claims 1 to 4, characterized in that the contact lug (9) at its end, which is opposite to the spring contact tongue (10) has a blade contact (13) or fork contact. Busbar connector according to one of the preceding claims, characterized in that the spring contact tongue (10) extends with its freely movable end to the adjacent stop surface (11). Busbar connector according to one of the preceding claims, characterized in that the stop surface (11) rests in the inserted state of the respective plug contact (1) on one of the comb webs (6).

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