EP3136519A1 - Connection device for connecting a conductor to a busbar - Google Patents

Abstract

The invention relates to a connection device (10) for connecting a conductor (100) to a busbar (200). The connection device (10) comprises a spring-loaded terminal (20), a conductor connection device (40), which is electrically conductively connected to the spring-loaded terminal (20), and an insulating housing (60) which has a housing section (62). The spring-loaded terminal (20) and the conductor terminal device (40) are received in the housing section (62). The housing portion (62) has a Aufstecknut (66) for receiving a portion (202) of the busbar (200). The spring terminal (20) protrudes into the slip groove (66) to be brought into contact with the portion (202) and to electrically connect the spring force terminal (20) to the bus bar (200). The insulating housing (60) comprises a closure section (64) which is suitable for assuming an open position (S o) and a closed position (S v). The connection device (10) can be plugged onto the busbar (200) in the open position (S o) in a direction of attachment (A) extending approximately transversely to an extension direction (E) of the busbar (200) in order to place the section (202) in the attachment groove (66). The closure portion (64) closes the Aufstecknut (66) in the closed position (S v) to hold the portion (202) in the closed position (S v) positively in the Aufstecknut (66).

Description

The invention relates to a connection device for connecting a conductor to a busbar, in particular a busbar of a distribution device.

Connection devices of the type mentioned in the introduction are known from the prior art which are suitable for producing a mechanical as well as an electrical connection between the conductor and the busbar. To connect the conductor and the busbar to the terminal device, screw terminal connection elements are mainly used.

From the publication DE 10 2008 032 037 A1 a connection device is known, which is made of a stamped sheet metal part and is adapted to receive a portion of the busbar form-fitting manner and to be connected to a stripped end of the conductor.

From the publication EP 1 322 000 A2 a connection device is known, which is on the one hand connected to a portion of the busbar and on the other hand comprises a Zugfederanschluss which can be connected to an end of the conductor. The connection device comprises an insulating housing, which is provided with an actuating lever, by means of which the Zugfederanschluss can be opened for insertion of the conductor.

It is the object of the present invention to provide a connection device which is easy to maintain, enables easy and safe handling and which can be securely connected to the busbar.

According to the invention, this object is achieved by a device according to claim 1.

According to the invention, the connection device comprises a spring-loaded terminal, a conductor connection device which is electrically conductively connected to the spring-loaded terminal, and an insulating material housing which has a housing section. The spring-loaded terminal and the conductor connection device are accommodated in the housing section. The housing section has an attachment groove for receiving a portion of the busbar. The spring clamp protrudes into the slip-on groove to be brought into contact with the section and to electrically connect the spring-loaded terminal to the busbar. The insulating housing comprises a closure portion which is adapted to assume an open position and a closed position. The connection device can be plugged onto the busbar in the open position in a mounting direction extending approximately transversely to an extension direction of the busbar, in order to receive the section in the attachment groove. The closure portion closes the Aufstecknut in the closed position to hold the portion in the closed position positively in the Aufstecknut.

As a result of the embodiment according to the invention, the connection device can be connected to the busbar in a simple and reliable manner. If the closure section adopts the closed position, then the connection device is connected in a form-fitting manner to the section of the busbar and an inadvertent tearing of the connection device from the busbar is made more difficult. If the closure section assumes the open position, then the connection device can be removed from the busbar in a simple manner by a movement counter to the attachment direction.

Preferably, the conductor connection means is adapted to be electrically conductively connected to the conductor.

Preferably, the conductor has a cross-sectional area which is between 1.5 mm ² and 35 mm ² .

In a preferred embodiment, the closure portion is movably held on the housing portion and by a movement in one Displacement direction from the open position into the closed position can be transferred.

Preferably, the conductor can be connected to the conductor connection device in such a way that the conductor emerges from the insulating material housing along an exit direction.

Preferably, the exit direction is substantially parallel and opposite to the mounting direction. That is, according to this embodiment, the connection device can be plugged by a movement in the outlet direction of the section. Alternatively, the exit direction may be substantially opposite to the attachment direction. According to this embodiment, the connection device can be attached to the section by a movement counter to the outlet direction.

This embodiment has the advantage that the positive connection between the section and slip-on is improved.

In a preferred embodiment, the displacement direction is approximately orthogonal to the mounting direction and / or approximately orthogonal to the extension direction.

Preferably, the insulating housing has a dovetail-shaped spring in cross-section and a dovetailed groove in cross-section, wherein the spring and the groove are arranged on the insulating housing, that the spring engages in the groove to the closure portion on the housing portion in the direction of displacement between the open position and the lock position to keep moving.

This configuration makes it possible to hold the closure section in a simple manner on the housing section such that the closure section is movably held between the open position and the closed position and is positively connected to the housing section.

Preferably, the spring is arranged on the closure portion and the groove on the housing portion. Alternatively, the spring can be arranged on the housing section and the groove on the closure section.

In a preferred embodiment, the insulating material housing has at least one nose, at least one first notch and at least one second notch, wherein the nose, the first notch and the second notch are arranged on the insulating housing, that the nose in the open position in the first notch engages to hold the closure portion in the open position, and engages in the closed position in the second notch to hold the closure portion in the closed position.

Preferably, the nose and the first notch are formed such that a displacement of the closure portion against the displacement direction is prevented beyond the open position addition.

This embodiment has the advantage that it can be prevented that the closure section can be removed from the housing section by a movement counter to the direction of displacement and can thus be lost.

In a preferred embodiment, the nose is arranged on the closure portion and the first notch and the second notch are disposed on the housing portion. Alternatively, the nose may be disposed on the housing portion and the first notch and second notch may be disposed on the closure portion.

Preferably, the closure portion is connected via a hinge to the housing portion, wherein the hinge allows pivoting of the closure portion from the open position to the closed position and wherein preferably the closure portion and the hinge are integrally formed on the housing portion.

Preferably, the insulating material housing in the closed position surrounds the portion in a circumferential direction extending transversely to the direction of extent.

Preferably, the spring clamp comprises a reinforcing element, which is preferably made of steel.

This configuration makes it possible to improve the clamping force of the spring terminal and / or to increase the life of the spring terminal.

In a preferred embodiment, the reinforcing element is formed from a wire.

Preferably, the reinforcing element is formed from a formed, further preferably bent wire.

In a preferred embodiment, the wire in cross-section is approximately circular-shaped or rectangular or elliptical surface-shaped.

Preferably, the spring clamp comprises a clamping portion which is substantially U-shaped and comprises two clamping legs.

This embodiment allows a simple and secure way to achieve a mechanical and an electrical connection of the connection device with the section.

In a preferred embodiment, the reinforcing element is formed substantially U-shaped and comprises two reinforcing legs, which bear against an outer side of the clamping legs.

By this configuration, the clamping force of the spring terminal can be increased and the life of the spring terminal can be extended.

Preferably, the clamping legs have a free end, wherein the clamping legs adjacent to the free end comprise a recess and the reinforcing legs have a projection which projects into the recess.

This embodiment has the advantage that the reinforcing element can be connected in a simple manner positively and / or non-positively with the clamping leg.

Preferably, the recess is formed as a depression or as a trough. Alternatively, the recess may also be formed as a cutout, through which the projection at least partially passes.

The invention further relates to a connection device for connecting an electrical installation device to a busbar, wherein the connection device comprises a connection device according to the invention and a conductor, wherein the conductor is electrically conductively connected to the conductor connection device by means of a permanent connection.

According to this embodiment means permanently that the connection between the conductor and the connection device can only be separated by destruction of this connection, that is, that the permanent connection can not be solved nondestructive.

According to this embodiment, the terminal device and the conductor form a unit. This embodiment has the advantage that the conductor can not accidentally come off the conductor connection device and thus a loss of the conductor or the connection device is difficult.

Preferably, the permanent connection is a material connection, furthermore preferably a solder connection or a welded connection. Alternatively or additionally, the permanent connection is a crimp connection.

In a preferred embodiment, the conductor comprises a first portion, which is electrically conductively connected to the conductor connection means and is received in the insulating housing, and a second portion which protrudes from the insulating material and is provided with an insulation.

According to this embodiment, an installer installing the connection device is particularly well protected against electric shock.

• Fig. 1: eine perspektivische Ansicht der Anschlussvorrichtung nach einem ersten Ausführungsbeispiel;
• Fig. 2: eine perspektivische Ansicht der Anschlussvorrichtung nach einem zweiten Ausführungsbeispiel;
• Fig. 3: eine perspektivische Ansicht der Anschlussvorrichtung nach dem ersten Ausführungsbeispiel;
• Fig. 4: eine perspektivische Ansicht der Anschlussvorrichtung nach dem ersten Ausführungsbeispiel;
• Fig. 5: eine perspektivische Ansicht der Anschlussvorrichtung nach dem ersten Ausführungsbeispiel;
• Fig. 6: eine perspektivische Ansicht der Anschlussvorrichtung nach dem ersten Ausführungsbeispiel;
• Fig. 7: eine perspektivische Ansicht der Anschlussvorrichtung nach dem ersten Ausführungsbeispiel;
• Fig. 8: eine perspektivische Ansicht der Anschlussvorrichtung nach dem ersten Ausführungsbeispiel, wobei zur Veranschaulichung das Isolierstoffgehäuse nicht dargestellt ist; und
• Fig. 9: die Anschlussvorrichtung nach dem ersten Ausführungsbeispiel, wobei zur Veranschaulichung eine Wandung des Isolierstoffgehäuses nicht dargestellt ist.

Details and further advantages of the device according to the invention and of the method according to the invention will be explained with reference to the exemplary embodiments described below. In detail, they illustrate:

• Fig. 1 a perspective view of the connecting device according to a first embodiment;
• Fig. 2 a perspective view of the connecting device according to a second embodiment;
• Fig. 3 a perspective view of the connecting device according to the first embodiment;
• Fig. 4 a perspective view of the connecting device according to the first embodiment;
• Fig. 5 a perspective view of the connecting device according to the first embodiment;
• Fig. 6 a perspective view of the connecting device according to the first embodiment;
• Fig. 7 a perspective view of the connecting device according to the first embodiment;
• Fig. 8 a perspective view of the connecting device according to the first embodiment, wherein the insulating material housing is not shown for illustrative purposes; and
• Fig. 9 the connection device according to the first embodiment, wherein for illustrative purposes, a wall of the insulating material is not shown.

FIG. 1 shows a connection device 1 according to a first embodiment. The connection device 1 comprises a connection device 10. The connection device 10 serves to connect a conductor 100 to a busbar 200. The connection device 10 comprises a spring force terminal 20, a conductor connection device 40, which is electrically conductively connected to the spring force terminal 20, and an insulating housing 60 Insulating housing 60 comprises a housing portion 62 and a closure portion 64. The closure portion 64 is connected to the housing portion 62 such that the closure portion 64 is movably supported between an open position S _O and a closed position S _V. The closure portion 64 can be moved by a movement in a direction of displacement V of the open position S _O in the closed position S _V.

In particular FIG. 9 to recognize, the spring terminal 20 and the conductor terminal device 40 is received in the housing portion 62. Preferably, the spring-loaded terminal 20 and / or the conductor connection device 40 can be held in the housing section 62 in a form-fitting manner.

The housing section 62 has an attachment groove 66, which is suitable for receiving a section 202 of the busbar 200. The spring terminal 20 protrudes into the slip-on groove 66 to be brought into contact with the portion 202 and to electrically connect the spring force terminal 20 to the bus bar 200. The spring-loaded terminal 20 preferably protrudes at least partially out of the insulating housing 60, in particular out of the housing section 62.

The connection device 10 can be plugged onto the busbar 200 in an attachment direction A extending approximately transversely to an extension direction E of the busbar 200 in order to receive the section 202 in the attachment groove 66 when the closure section 64 assumes the open position S _O. This is especially true of the FIGS. 3 and 4 seen.

The connection device 1 according to the first embodiment further comprises a conductor 100, wherein the conductor 100 is electrically conductively connected to the conductor connection device 40 of the connection device 10 by means of a permanent connection.

The conductor 100 emerges from the insulating material housing 16, in particular from the housing section 62 in an exit direction L.

In the connection device 1 according to the first embodiment, the exit direction L runs opposite and parallel to the mounting direction A.

According to a second embodiment of the connecting device 1, the in FIG. 2 is reproduced, the exit direction L is parallel and in the same direction as the slip A.

How in particular the Figures 2 and 5 indicate the insulating housing 60 in the closed position S _V, the portion 202 in a direction transverse to the extension direction E extending circumferential direction of the busbar 200 completely. By means of this embodiment, an accidental removal of the connection device 1 from the busbar 200 is made more difficult.

Preferably, the slip-on groove 66 and / or the busbar 200 is substantially rectangular in cross-section. With this configuration, the connection device 1 can be securely fastened to the busbar 200.

How the particular FIGS. 1, 2 . 6 and 7 indicate, the displacement direction V may be approximately orthogonal to the mounting direction A and / or approximately orthogonal to the extension direction E.

How the particular FIGS. 6 and 7 The insulating housing 60 can have a dovetail-shaped spring 68 and a dovetail-shaped groove 70 in cross-section. In this case, the spring 68 can be arranged on the closure section 64 and the groove 70 can be arranged on the housing section 62. Alternatively, the spring 68 on the housing portion 62 and the groove 70 may be disposed on the closure portion 64. Preferably, groove 70 and spring 68 extend substantially parallel to the direction of displacement V.

In the embodiments according to both embodiments, the spring 68 and the groove 70 are arranged on the insulating housing 60 such that the spring 68 engages the groove 70 to hold the closure portion 64 on the housing portion 62 such that the closure portion 64 in the direction of displacement V between the open position S _O and the closed position S _{V is} movable.

The insulating housing 60 according to both embodiments comprises at least one lug 72, at least one first notch 74 and at least one second notch 76. According to both embodiments, the lug 72 is disposed on the closure portion 64 and the first and second notches 74, 76 are on the housing portion 62 arranged. Alternatively, the nose 72 may be disposed on the housing portion 62 and the notches 74, 76 on the closure portion 64.

The nose 72, the first notch 74 and the second notch 76 are arranged on the insulating housing 60 such that the nose 72 engages in the open position S _O in the first notch 74 to hold the closure portion 64 in the open position S _O , and in the closed position S _V in the second notch 76 engages to hold the closure portion 64 in the closed position S _V.

The opening position S _O is in the FIGS. 1 . 3 . 4 and 9 played. The closure position S _V is in the Figures 2 and 4 played.

How the particular FIGS. 8 and 9 can be seen, the spring clamp 20 and a reinforcing element 22 may include that preferably steel is made. The reinforcing element 22 serves on the one hand to increase the spring force of the spring-loaded terminal 20 and on the other hand to maintain the spring force over the life of the connecting device 1. Preferably, the reinforcing element 22 is formed of a wire. The wire can, as in both embodiments shown to be approximately circular in cross section. Alternatively, the wire may also be approximately elliptical in cross section or rectangular in cross section.

According to both embodiments, the spring-loaded terminal 20 may comprise a clamping portion 24 which is formed substantially U-shaped and has two clamping legs 26. According to both embodiments, the reinforcing element 22 may also be formed substantially U-shaped and comprise two reinforcing legs 23 which bear against an outer side 25 of the clamping legs 26.

The clamping legs 26 may each have a free end 27. The clamping legs 26 may include a recess 28 adjacent to the free end 27. The reinforcing legs 23 may have a projection 29, which protrudes into the recess 28 or is received in the recess 28. According to both embodiments, the recess 28 may be formed as a trough or depression, which is in each case adapted to the contour of the projections 29 of the reinforcing legs 23.

The clamping legs 26 are according to both embodiments on its inner side 21, in particular in the region of the recess 28 to the section 202 can be applied. The free ends 27 of the clamping legs 26 may project outwardly with respect to the U-shape to facilitate insertion of the section 202 in the clamping section 24.

According to both embodiments, the permanent connection between the conductor 100 and the conductor connection device 40 by means of a material connection, in particular a solder connection 42 or a welded connection can be made. Alternatively, the permanent connection can also be done by means of a crimp connection.

According to both embodiments, the housing portion 62 of the insulating housing 60 may include a first wall 61 which forms the bottom of the slip-66. The first wall 61 may be formed substantially U-shaped and preferably extends in sections along the inner side 21 of the clamping legs 26th

The housing portion 62 may further comprise a second wall 63, which may be formed substantially L- or U-shaped. The second wall 63 preferably extends along an outer side of the reinforcing element 22 and / or along the outer side 25 of the clamping section 24. By means of the first wall 61 and / or the second wall 63, the clamping section 24 and / or the reinforcing element 22 can be positively locked in the housing section 62 be held.

According to both embodiments, the conductor 100 may include a first portion 102 which is electrically connected to the conductor terminal means 40 and received in the insulating housing 60, and a second portion 104 which protrudes from the insulating housing 60 and is provided with insulation 106 ,

According to a preferred embodiment, which is not shown in the embodiments, the closure portion 64 is connected via a hinge to the housing portion 62, wherein the hinge allows pivoting of the closure portion 64 from the open position S _O in the closed position S _V , and preferably the closure portion 64 and the hinge are integrally formed on the housing portion 62.

Of course, the invention is not limited to the described and illustrated embodiments. Changes, eg. As in the embodiments of the various components or substitutions by technical equivalents, as far as they remain within the scope of the claimed protection, at any time possible.

Claims (15)

Connecting device for connecting a conductor (100) to a busbar (200) comprising: a spring-loaded terminal (20), - A conductor terminal device (40) which is electrically connected to the spring terminal (20), and an insulating housing (60) comprising a housing section (62), the spring-loaded terminal (20) and the conductor terminal device (40) being accommodated in the housing section (62),
wherein the housing portion (62) has an attachment groove (66) for receiving a portion (202) of the busbar (200),
wherein the spring force terminal (20) protrudes into the slip-on groove (66) to be brought into contact with the portion (202) and to connect the spring-force terminal (20) in an electrically conductive manner to the busbar (200),
characterized,
in that the insulating housing (60) comprises a closure section (64) which is suitable for assuming an open position (S _O ) and a closed position (S _V ),
wherein the connection device (10) in the open position (S _O ) in an approximately transversely to an extension direction (E) of the busbar (200) extending Aufsteckrichtung (A) on the busbar (200) can be plugged to the portion (202) in the Aufstecknut (66) record and
wherein the closure portion (64) closes the Aufstecknut (66) in the closed position (S _V ) to hold the portion (202) in the closed position (S _V ) positively in the Aufstecknut (66). Connecting device according to claim 1, characterized in that the closure portion (64) on the housing portion (62) is movably held and by a movement in a displacement direction (V) of the open position (S _O ) in the closed position (S _V ) can be transferred. Connecting device according to one of claims 1 or 2, characterized in that the displacement direction (V) is approximately orthogonal to the mounting direction (A) and / or approximately orthogonal to the extension direction (E). Connecting device according to one of claims 1 to 3, characterized in that the insulating housing (60) has a dovetailed in cross-section spring (68) and a dovetail groove in cross-section (70), wherein the spring (68) and the groove (70) in such a way arranged on the insulating housing, that the spring (68) engages in the groove (70) to the closure portion (64) on the housing portion (62) in the displacement direction (V) between the open position (S _O ) and the closed position (S _V ) to keep moving. Connecting device according to one of claims 1 to 4, characterized in that the insulating housing at least one nose (72), at least one first notch (74) and at least one second notch (76), wherein the nose (72), the first notch ( 74) and the second notch (76) are arranged on the insulating housing, that the nose (72) in the open position (S _O ) in the first notch (74) engages to the closure portion (64) in the open position (S _O ) and, in the closed position (S _V ), engages the second notch (76) to hold the closure portion (64) in the closed position (S _V ). Connecting device according to claim 1, characterized in that the closure portion (64) is connected via a hinge to the housing portion (62), wherein the hinge pivoting the closure portion (64) from the open position (S _O ) to the closed position (S _V ) allows and wherein preferably the closure portion (63) and the hinge on the housing portion (62) are integrally formed. Connection device according to one of claims 1 to 6, characterized in that the insulating material housing (60) in the closed position (S _V ) surrounds the section (202) in a circumferential direction running transversely to the extension direction (E). Connecting device according to one of claims 1 to 7, characterized in that the spring-loaded terminal (20) comprises a reinforcing element (22), which is preferably made of steel. Connecting device according to claim 8, characterized in that the reinforcing element (22) is formed from a wire. Connecting device according to one of claims 1 to 9, characterized in that the spring-loaded terminal comprises a clamping portion (24) which is formed substantially U-shaped and comprises two clamping legs (26). Connecting device according to one of claims 8 or 9 and claim 10, characterized in that the reinforcing element (22) is formed substantially U-shaped and two reinforcing legs (23) which bear against an outer side (25) of the clamping legs comprises. Connecting device according to claim 11, characterized in that the clamping legs (26) have a free end (27), wherein the clamping legs (26) adjacent to the free end (27) comprises a recess (28) and the reinforcing legs (23) has a projection (29) which projects into the recess (28). A connection device for connecting an electrical installation device to a busbar (200), comprising a connection device (10) according to one of claims 1 to 12 and a conductor (100), wherein the conductor (100) is electrically connected to the conductor connection device (40) by means of a permanent connection is conductively connected. Connecting device according to claim 13, characterized in that the permanent connection is a material connection, preferably a solder connection (42) or a welded connection, or a crimped connection. Connecting device according to one of claims 13 or 14, characterized in that the conductor (100) has a first portion (102), which with the conductor connection device (40) is electrically conductively connected and accommodated in the insulating housing (60), and a second section (104), which protrudes from the insulating housing (60) and is provided with insulation (106).

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