EP3066719B1 - Connection device for connecting electrical conductors - Google Patents

Description

The invention relates to a connecting device for connecting electrical conductors, which comprises a sheath clamp with a sheath clamp lower part and a sheath clamp upper part.

In many cases, terminals for connecting electrical conductors are inserted into the terminal point in the direction of the conductor. If, for reasons of space or because of the available handling space, the terminal point is to be filled from above, a jacket clamp open at the top can be used for inserting and stacking cut or uncut conductors. The terminal compartment is closed and the ladder fixed by attaching the upper part and screwing it down.

The advantage of free and open accessibility is paid for by the disadvantage of a non-fixed and therefore removable upper part. The joining of the upper and lower part of the jacket clamp requires accuracy or multiple placement until the pressure piece is inserted into a fork.

In the WO 91/04590 discloses a terminal block for electrically connecting wires.

It is therefore an object of the present invention to provide a connection device with a jacket clamp that simplifies the connection of electrical conductors.

This object is achieved by an object with the features according to the independent claim. Advantageous embodiments are the subject of the dependent claims, the description and the drawings.

According to a first aspect, the object is achieved by a connecting device for connecting electrical conductors, which comprises a sheath clamp with a sheath clamp lower part and a sheath clamp upper part, with a contact carrier in which the sheath clamp lower part is fastened; and a removable insulating cap, which is captively connected to the contact carrier, for rotatably receiving the upper part of the jacket terminal. For example, the technical The advantage achieved is that it is possible to insert electrical conductors into the sheath clamp from above and to prevent the sheath clamp upper part from being lost. Since the upper part of the mantle clamp remains within reach of the connection device, the connection of the electrical conductors is simplified.

In one embodiment of this connection device, the insulating cap comprises a swivel arm for tiltably fastening the insulating cap to the contact carrier. This has the technical advantage, for example, that the insulating cap can be tilted to the side for inserting the electrical conductors.

In a further embodiment of this connection device, the insulating cap is fastened to the contact carrier with a flexible section. In this way, for example, the technical advantage is achieved that captive fastening of the insulating cap is achieved in a simple manner.

In a further embodiment of this connecting device, the insulating cap comprises a plug pin for rotatably fastening the insulating cap to the contact carrier, which pin runs parallel to the axis of rotation of the upper part of the jacket terminal. In this way, for example, the technical advantage is achieved that the insulating cap can be turned to the side about the axis of the plug pin when it is pulled out.

The upper part of the mantle clamp remains within reach of the connection device, making it easier to connect the electrical conductors.

The connection device can be used in a functional component of automation technology, for example in a component assembly system, in particular a fieldbus system.

In an advantageous embodiment of the connection device, the insulating cap can be inserted into the contact carrier. In this way, for example, the technical advantage is achieved that insertion of the upper part of the mantle clamp into the contact carrier is simplified.

In a further advantageous embodiment of the connection device, the contact carrier comprises two opposite guide grooves for guiding the insulating cap inside the contact carrier. In this way, for example, the technical advantage is achieved that the insulating cap can be easily brought to the intended position in relation to the lower part of the jacket terminal.

In a further advantageous embodiment of the connection device, the insulating cap comprises two guide sections for insertion into the opposite guide grooves of the contact carrier. This achieves the technical advantage, for example, that the insulating cap can be brought to the lower part of the jacket terminal without jamming.

In a further advantageous embodiment of the connection device, the swivel arm comprises two opposite pivot pins. This has the technical advantage, for example, that the insulating cap is reliably rotatably mounted.

In a further advantageous embodiment of the connection device, the contact carrier comprises two trunnion guide grooves for slidably inserting the insulating cap by means of the opposite trunnion. This has the technical advantage, for example, that the insulating cap can be inserted into the contact carrier and tilted in a pulled-out position.

In a further advantageous embodiment of the connection device, a metallic contact bridge is attached to the insulating cap for exerting a pressing force on the electrical conductors. This has the technical advantage, for example, that the contacting of the electrical conductors is improved.

In a further advantageous embodiment of the connection device, the metallic contact bridge is fastened to the guide sections. This has the technical advantage, for example, that a stable attachment of the metallic contact bridge can be achieved.

In a further advantageous embodiment of the connection device, the metallic contact bridge overlaps the upper part of the terminal block. This also achieves the technical advantage, for example, that a large contact surface is created.

In a further advantageous embodiment of the connecting device, the upper part of the terminal block comprises a pin for exerting a compressive force on the metallic contact bridge, which is arranged on the axis of rotation of the upper part of the terminal block.

This achieves the technical advantage, for example, that the pressure is applied uniformly over the entire pressure surface.

In a further advantageous embodiment of the connection device, an electrically insulating contact protection element is arranged between an upper side of the upper part of the jacket terminal and the insulating cap. This achieves the technical advantage, for example, that an undesired touching of the upper part of the jacket clamp is prevented.

In a further advantageous embodiment of the connection device, the contact protection element comprises a slot for inserting a turning tool. This achieves the technical advantage, for example, that the upper part of the mantle clamp can be screwed in by means of a turning tool despite the contact protection element.

Fig. 1

eine Ansicht einer Anschlussvorrichtung;

Fig. 2

eine vergrößerte Querschnittsansicht der Anschlussvorrichtung;

Fig. 3

unterschiedliche Ansichten einer Isolierkappe und ein Mantelklemmenoberteil;

Fig. 4

eine Ansicht einer weiteren Ausführungsform der Anschlussvorrichtung;

Fig. 5

eine Ansicht einer weiteren Ausführungsform der Anschlussvorrichtung; und

Fig. 6

eine Ansicht einer weiteren Ausführungsform der Anschlussvorrichtung.

Further embodiments are explained with reference to the accompanying drawings. Show it:

Fig. 1

a view of a connection device;

Fig. 2

an enlarged cross-sectional view of the connection device;

Fig. 3

different views of an insulating cap and an upper part of a jacket clamp;

Fig. 4

a view of a further embodiment of the connection device;

Fig. 5

a view of a further embodiment of the connection device; and

Fig. 6

a view of another embodiment of the connection device.

Fig. 1 shows a view of a connection device 100. The connection device 100 serves for the electrical connection of electrical conductors and forms a terminal block with ten connections. For this purpose, the connection device 100 comprises a plurality of electrical ones Connectors that are arranged inside the connection device 100 in a specially designed contact carrier 103.

The electrical connectors each include a jacket terminal and a plug contact pin. The jacket terminal enables the connection of several unassembled fine-wire conductors in different cross-sections without restricting the clarity in an assembly area. The contact carrier 103 comprises a plurality of jacket terminal openings 131, via which the electrical conductors run laterally into the contact carrier 103. The jacket terminal openings 131 are arranged on the side wall of the contact carrier 103. The contact carrier 103 is an insulating body, which supports the holding of the lower part of the jacket terminal and the supplied electrical lines.

The jacket clip comprises a jacket clip lower part and a jacket clip upper part which is screwed onto the jacket clip lower part. The electrical conductors are inserted and pressed against one another between the lower part of the mantle clamp and the upper part of the mantle clamp, so that an electrical contact is made between the electrical conductors. The lower part of the mantle clamp is fixed and immovable in the contact carrier 103, whereas the upper part of the mantle clamp is rotatably arranged in an insulating cap 107. The insulating cap 107 for the upper part of the mantle clamp permits free rotation of the upper part of the outer mantle clamp without the upper part of the mantle clamp sliding out of the insulating cap 107. The insulating cap 107 is formed, for example, by an insulating plastic part which laterally surrounds the cylindrical upper part of the jacket clamp.

The insulating cap 107 is fastened to the contact carrier 103 in such a way that it cannot be lost. The insulating cap 107 can be pulled out of the contact carrier 103 and then folded away to the side, so that the electrical conductors can be inserted into the contact carrier 103 from above. This creates a parking position of the insulating cap 107 in an open, open position that does not impede the processing. Any device can be attached to the contact carrier 103 that makes the upper part of the terminal clamp 105-2 captive. In addition, the upper part of the mantle clamp 105-2 can hold in defined parking positions in two assembly states.

To attach the electrical conductors, the insulating cap 107 is first tilted back into a vertical position and then pushed into the contact carrier 103. Then the upper part of the mantle clamp is screwed onto the lower part of the mantle clamp by means of a turning tool, for example with a flat-blade screwdriver. In order to improve the contact between the electrical conductors, a contact bridge 123 is arranged on the underside of the insulating cap 107 and is pressed onto the electrical conductors by the upper part of the jacket terminal.

Fig. 2 shows an enlarged cross-sectional view of the connection device 100 with a section through the clamping point. The lower jacket clamp part 105-1 is screwed to the contact carrier 103 by means of a nut 133, so that the lower jacket clamp part 105-1 is fixedly and non-rotatably arranged in the contact carrier 103. By contrast, the upper part of the mantle clamp 105-2 is rotatably arranged in the insulating cap 107. The jacket clamp lower part 105-1 and the jacket clamp upper part 105-2 can be formed from steel or brass.

The insulating cap 107 surrounds the upper part of the terminal clamp 105-2. The insulating cap 107 is inserted into the contact carrier 107. The insulating cap 107 comprises two laterally arranged, outstanding guide sections 111 for insertion into the opposite guide grooves 109 of the contact carrier 103. The insulating grooves 107 can be displaced in the interior of the contact carrier 103 in the direction of the jacket terminal part 105-1 by means of the guide grooves 109.

The jacket clamp upper part 105-2 has an internal thread which is screwed onto an external thread of the jacket clamp lower part 105-1. In the pulled-out state, the insulating cap 107 can be folded away to the side so that the electrical conductors can be inserted into the contact carrier 103 from above. For this purpose, the insulating cap 107 comprises a swivel arm 113, which is slidably fastened with two pivots in a pivot guide groove 117. The pivot arm 113 extends parallel to the axis of rotation of the upper part of the mantle clamp 105-2 in the insulating cap 107. The pivot pins of the pivot arm 113 slide downward when the insulating cap 107 is inserted in the pivot guide grooves 117.

A contact bridge 123 is arranged on the underside of the insulating cap 107 and presses on the inserted electrical conductors when the sheath clamp 105 is screwed together. A pin 125, which supports the contact bridge 123 centrally, is arranged in the center of the cylindrical upper part 105-2. The contact bridge 123 can be inserted in the correct position via the insulating cap 107. The contact bridge 123 makes it possible to dispense with a rotatable and internally spring-loaded pressure piece in the upper part of the terminal clamp 105-2. As a result, the manufacturing effort that results from an internal suspension and the assembly effort for the pressure piece can be reduced.

This creates a fastening mechanism of the insulating cap 107 on the contact carrier 103 for the lower part 105-1 of the jacket terminal. A pre-locking position of the upper part of the upper part of the terminal block 105-2 is provided above the lower part of the terminal block to expose the adjacent terminal areas.

Fig. 3 shows different, enlarged views of the insulating cap 107, the upper jacket clamp part 105-2 and a contact protection element 127. The insulating cap 107 comprises the two laterally protruding guide sections 111. In the laterally protruding guide sections 111, a receptacle 137 is formed for the contact bridge 123. The bow-shaped contact bridge 123 is pressed into the two receptacles 137 with the parallel arms 139. The sawtooth profile arranged on the arms 139 digs into the inside of the receptacles 137, so that the contact bridge 123 is fastened to the insulating cap 107.

At the top of the insulating cap 107 there is an opening 135 through which the upper part of the mantle clamp 105-2 can be rotated. For this purpose, the upper jacket clamp part 105-2 has a slot 145, into which a screwdriver can be used to turn the upper jacket clamp part 105-2. In addition, the insulating cap 107 includes a marker receptacle 141 in which a marker or a label can be inserted.

On the side of the insulating cap 107, the swivel arm 113 is formed, at the lower end of which the two opposite pivot pins 115 are located. The swivel arm 113 runs parallel to the axis of rotation of the upper jacket clamp part 105-2 used. The Pivots 115 of the swivel arm 113 are slidably inserted in a pivot guide groove 117, so that the insulating cap 107 can be slid within the contact carrier 103 and can be tilted in a pulled-out position.

The electrically insulating contact protection element 127 is used between an upper side of the upper part of the terminal block 105-2 and the insulating cap 107, which covers the upper side of the upper part of the terminal block 105-2 up to the slot 129, so that protection against accidental contact is created by a touch-proof insulating body covering. When the jacket terminal upper part 105-2 is rotated, the contact protection element 127 also rotates. Through the slot 129, the turning tool can be inserted into the upper part of the mantle clamp 105-2.

Fig. 4 shows a view of a further embodiment of the connection device 100. In this embodiment, the jacket clamp upper part 105-2 comprises a hexagon recess 143, into which a hexagon screwdriver can be used for rotating the jacket clamp upper part 105-2. In this case, the contact protection element 127 can be dispensed with. In this embodiment too, the insulating cap 107 is pulled back and then folded away laterally in order to be able to insert the electrical conductors into the contact carrier 103 from above.

Fig. 5 shows a view of a further embodiment of the connection device 100. In this embodiment, the insulating cap 107 is fastened to the contact carrier 103 by means of a flexible section 119, such as, for example, a flexible ribbon or a flexible plastic section. After detachably pulling out the insulating cap 107 from the contact carrier 103, the insulating cap 107 with the flexible section 119 remains attached to the contact carrier 103. After inserting the insulating cap 107, the insulating cap 107 can snap into a pre-locking position to free up the adjacent terminal areas.

Fig. 6 shows a view of a further embodiment of the connection device 100. In this embodiment, the insulating cap 107 comprises a plug pin 121 for rotatably fastening the insulating cap 107 to the contact carrier 103. The plug pin 121 runs parallel to the axis of rotation of the upper part of the terminal clamp 105-2. After pulling out the Insulating cap 107, the insulating cap 107 can be rotated together with the sheath clamp upper part 105-2 around the axis of the plug pin 121 in order to be able to insert the electrical conductors into the contact carrier 103 from above.

The connection device 100 realizes a loss and material-reduced connection solution for several fine-wire conductors, which can also have different cross-sections. The connection device 100 improves handling and increases the acceptance of the jacket clamp and a riser clamp. The connection device 100 enables a holistic construction concept (Power & Drive - P&D) that solves the task of efficient energy distribution in the field, i.e. outside a control cabinet.

The connection device 100 enables a handling advantage due to smaller operating tools in the electrical installation. In addition, modular systems or motor switches can be implemented in the field with a high degree of protection, which are arranged inside or outside a control cabinet.

All of the features explained and shown in connection with individual embodiments of the invention can be provided in different combinations in the subject matter of the invention in order to simultaneously realize their advantageous effects.

The scope of the present invention is given by the claims and is not limited by the features explained in the description or shown in the figures.

REFERENCE SIGN LIST

100

Connection device

103

Contact carrier

105

Coat clamp

105-1

Lower part of the jacket clamp

105-2

Sheath clamp upper part

107

Insulating cap

109

Guide groove

111

Guide sections

113

Swivel arm

115

Pivot

117

Trunnion guide groove

119

flexible section

121

Pin

123

Contact bridge

125

pen

127

Contact protection element

129

slot

131

Sheath clamp opening

133

mother

135

opening

137

admission

139

poor

141

Marker holder

143

Hexagon recess

145

slot

Claims (10)

1. Connection device (100) for connecting electrical conductors, which comprises a sheath clamp (105) with a sheath clamp lower part (105-1) and a sheath clamp upper part (105-2), comprising:

   a contact carrier (103), in which the sheath terminal lower part (105-1) is fastened;

   and characterized by

   a removable insulating cap (107) for rotatably receiving the sheath clamp upper part (105-2), wherein the removable insulating cap (107) is captively connected to the contact carrier (103) by a swivel arm (113) for a pivotable connection, or by a flexible section (119), or by a pin (121) for a rotatable connection, which runs parallel to the axis of rotation of the sheath clamp upper part (105-2) for a rotatable connection.
2. Connection device (100) according to claim 1, wherein the insulating cap (107) can be inserted in the contact carrier (103).
3. Connection device (100) according to one of the preceding claims, wherein the contact carrier (103) comprises two opposite guide grooves (109) for guiding the insulating cap (107) within the contact carrier (103).
4. Connection device (100) according to claim 3, wherein the insulating cap (107) comprises two guide sections (111) for insertion into the opposite guide grooves (109) of the contact carrier (103).
5. Connection device (100) according to one of the preceding claims, wherein the swivel arm (113) comprises two opposite rotatable pins (115) and the contact carrier (103) comprises two rotatable pin guide grooves (117) for slidably inserting the insulating cap (107) by means of the opposite rotatable pin (115).
6. Connection device (100) according to any one of the preceding claims, wherein at the insulating cap (107) a metallic contact bridge (123) is attached for exerting a pressing force on the electrical conductors.
7. The connection device (100) according to claim 6, wherein the metallic contact bridge (123) is attached to the guide sections (111) and engages over the sheath clamp upper part (105-2).
8. Connection device (100) according to claim 6 or 7, wherein the sheath clamp upper part (105-2) comprises a pin (125) for exerting a pressing force on the metallic contact bridge (123), which is positioned on the axis of rotation of the sheath clamp upper part (105-2).
9. Connection device (100) according to any one of the preceding claims, wherein an electrically insulating contact protection element (127) is arranged between an upper side of sheath clamp upper part (105-2) and the insulating cap (107).
10. The connection device (100) according to claim 9, wherein the contact protection element (127) comprises a slot (129) for inserting a turning tool.

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