DE102005052982B4 - Clamping device for a DIN rail mounted device - Google Patents

Abstract

Clamping device (10) for a modular device for electrically connecting a feeder conductor (16) to a busbar (12) with:
- A clamping frame (20), in which the feed conductor (16) is insertable to be jammed there with him,
- A cage tension spring (26) having a U-shaped body (28), the first leg (30) on a first outer side of the clamping frame (20) is arranged, and on the second leg (32) a terminal fork (34) picked up is, which surrounds the clamping frame (20) and determines a terminal point for the busbar on a second, the first outer side opposite the outer side of the clamping frame, and with
- An actuating element (42) which can press the second leg (32) of the U-shaped body (28) in the direction against the first leg (30) while the clamping fork (34) can push away from the clamping position, so that a busbar connection ( 14) between the clamping fork (34) and clamping frame (20) is insertable, so that at the end of the pressure by the actuating element (42) the ...

Description

The The invention relates to a clamping device for a DIN rail mounted device for electrical Connecting a feeder conductor to a busbar. It concerns also a DIN rail mounted device with such a clamping device and one in the clamping device suitable cage tension spring and a mechanism usable in the clamping device for Actuate the feather.

In The installation technology is generally a trend towards a comfortable and fast connection technology. To be connected Modular devices, being between the device access side (Side of the power plant) and the device outlet side (side of the consumer) a distinction is made.

In In a first step, the prior art has developed plug-in terminals for the device outlet side.

For the device access side The company Hager has launched a plug-in terminal on the market for one Busbar on the access side is suitable. This is however little comfortable. It is based on the previously used arrangement from that the busbar is located at the front and a ladder behind it is located.

From the DE 201 01 435 U1 is an electrical appliance with connections for a single wire and a busbar known. The terminal for the bus bar flag has a spring loaded slug piece. To insert the busbar flag, the oblique piece is pressed back against the force of the spring by means of the flag. A Berührstreifen the Schrägstücks forms a claw edge against simply pulling out the busbar flag from the recording. The claw edge can be pushed away by means of an actuating lever.

The DE 199 05 442 A1 discloses a terminal assembly for wire and bus bar ribbon conductors to be terminated. A clamping screw engages in a clamping frame in order to clamp an electrical conductor can. In the clamping frame also engages a U-shaped clamping piece, which includes a seen from the access side of the screw in front of the screw legs with a spring for inserting a busbar ribbon conductor. The thigh does not hinder access to the screw.

From the EP 1 505 692 A1 An arrangement for fixing an electrical conductor and a busbar is known. To attach an electrical conductor is a screw which can be clamped in a clamping cage. A spring is supported in the clamping cage and serves to clamp a busbar. The busbar is pressed against the outside of the clamping cage during clamping.

The DE 35 04 317 A1 describes a terminal for electrical conductors, in which the clamping can be done either by means of a clamping screw or by means of a clamping spring. The clamping screw is arranged on a clamping base. An energy storage spring is attached to the terminal block and held by latching means in a tensioned position. A conductor can be clamped either by tightening the clamping screw or by releasing the latch on the terminal block.

The DE 198 02 945 C2 discloses an electrical clamp having a clamping spring which, starting from a rear spring bow, comprises a bearing leg and a clamping leg. An existing in the clamping leg end window recess engages approximately at right angles to the end of the plant leg. An inserted into the window recess electrical conductor is clamped by the lower edge of the window recess against the underside of the abutment leg. In the region of the window recess, a material flap is provided which is herausgebo gene with an inclined position outwardly from the clamping spring and serves as a guide tab for the tip of an actuating tool.

The DE 195 29 028 A1 describes a spring terminal with a arranged in the insulating housing of the terminal clamping element for opening and closing the nip. In the insulating housing, a rotary lever mechanism is further incorporated with a control unit, which serves to actuate the terminal.

It The object of the present invention is an improved clamping device especially for the Device Access page to provide in which both the supply conductor is reliably clamped as well as the busbar can be quickly clamped. The clamping device especially for Arrangements are suitable, in which the conductor closer to the Device Access page as the busbar is located.

The Task is solved by a clamping device according to claim 1.

Accordingly, the clamping device according to the invention has a clamping frame into which the feed conductor can be inserted in order to be jammed there with it. Further, a cage tension spring is provided which has a U-shaped body, the first leg (the U-shape) is disposed on a first outer side of the clamping frame, and at the second leg of which a terminal fork is attached, which surrounds the clamping frame and defines a clamping position on a second outer side of the clamping frame (determined). Finally, the clamping device according to the invention on an actuating element which can press the second leg of the U-shaped body in the direction against the first leg and thereby push away the clamping fork of the terminal point, so that a busbar connection between the clamping fork and clamping frame is inserted, so that at the end the pressure exerted by the actuating element, the cage tension spring pushes the clamping fork back into the clamping position and thus presses the busbar connection from the outside to the clamping frame.

It enough So a relatively simple structure, in addition to the usual Clamping frame only a cage tension spring and an actuator need to be provided to simply and quickly connect a DIN rail mounted device to a Busbar connection and vice versa a simple and fast To solve guarantee. The actuator can be relatively easy (about an actuating mechanism) be controlled so that the total assembly time both when clamping as well as when solving shortened is.

at a preferred embodiment the actuating mechanism a first setting in which he the spring force (the cage tension spring) at least as far as releases, that the clamping fork pressure in direction exerts against the clamping frame. In a second adjustment of the actuating mechanism becomes pressure on the actuator and thus exercised on the spring. In that the actuating mechanism has two settings, he is so executable that from the outside relative A fold visually recognizable, if all busbar terminals are connected. As a result, increased Anklemmsicherheit is given. Especially with screw terminals This is an improvement, since the screwing bad at these can be recognized and not two defined settings are distinguished can.

at a preferred embodiment includes the actuating mechanism a roller, from a first resting position, the first setting the actuating mechanism corresponds, in a printing position, the second setting of the actuating mechanism corresponds, can be turned. For example, the roller has a Recording for a tool (eg a slot for a screwdriver), with the help of which it can be turned. On the basis of the recording can also be well recognized, which position the roller occupies, and whether the busbars are therefore pinched or not.

It There are different mechanisms that allow a rotational movement a roller can be converted into a movement that has a thigh the cage tension spring depressing. Preferably, the roller acts over Film hinges on a slide, which then as an actuator acts by translationally upon rotation of the roller moved (namely when turning through a certain angle by a certain distance in one direction moves and moved back in reverse rotation). Preferably, an intermediate piece is provided between the roller and slide, in particular fork-shaped can be designed. Two legs of the fork can then via film hinges with the Roller can be connected, and a leg of the fork can with be connected to the slide.

Instead of with a roller and film hinges, the operating mechanism can also open be formed other way, for. B. a push-button arrangement, an eccentric shaft assembly or a lever assembly. By push-button or lever action or by action by means of a Eccentric shaft can also be pressed down the leg of the cage clamp.

To the pressing down of the second leg, an extension is preferably provided on this, the over the first leg protrudes. On the one hand, there is the leverage effect especially good. In addition, the actuator, on the extension acts, laterally across the clamping frame are arranged when the first leg of the spring is attached to the clamping frame. This will make room for a screw created.

Prefers from the first outside penetrating into the clamping frame, such a screw is provided, around together with a located in the clamping frame (relative to the clamping frame movable) pressure piece to serve to clamp the feeder in the clamping frame. So while the busbar by means of the spring force in the clamping device is clamped in the preferred embodiment of the invention serves the conventional Screw for clamping the infeed conductor. As then a dining manager and Busbar are both connected to the clamping frame is the made electrical contact.

The Screw is preferred by a screw opening in the two legs the cage tension spring guided. In other words, the actual bolt penetrates the Cage tension spring, during the Head beyond the second leg of the cage tension spring for screwing accessible is.

The invention also relates to a series installation device with a clamping device according to the invention. For example, the DIN rail mounted device is a conventional circuit breaker.

to Invention belongs also a cage tension spring used in her, which is a U-shaped body having a first leg and a second leg and an attached to the second leg clamping fork, which the first leg surrounds the side and a space between itself and the first leg, which increases when against a through the U-shape of the body defined spring pressure of the second leg is pressed against the first. The cage tension spring points a projection on the second leg, which protrudes beyond the first leg and is adapted to receive a pressure effect, wherein the second Leg is pressed against the first leg. Through the extension Thus, the action of the actuating element in the clamping device according to the invention guaranteed. As mentioned above, this makes the leverage particularly good, and by sticking out of the second leg the first leg can such an actuator on the side the spring act. It is in an embodiment of the invention the cage tension spring one for the implementation a bolt suitable opening in the two legs.

The Invention also relates to the actuating mechanism, in the clamping device according to the invention is used. This has a roller around a fixed axis is rotatable to take at least two angular positions, the thereby in two translational positions of a (plate-shaped) Slider translated be that roller and slider over an intermediate piece with each other are connected, the compounds of roller and intermediate piece on the one hand and slide and intermediate piece on the other hand are designed as film hinges.

Prefers is the intermediate piece Y-shaped, where the roller ever over a film hinge is connected to each of the two legs of the Y-shape and the slider over a movie hinge with a foot of Y-shape is connected.

Roller, connecting piece and slides can be integrally formed be. For example, they can be injection molded from (elastic) plastic. In this embodiment is the operating mechanism especially inexpensive produced.

It will now be a preferred embodiment of the invention with reference to the drawing, in which:

1 schematically shows an inventive rail mounted device with a busbar and a feed conductor open from the side;

2 the modular device open from the side obliquely front shows;

3 shows a cross section through the DIN rail mounted device with feed conductor, busbar and a tool;

4 the clamping device according to the invention in a perspective view shows;

5 the cage tension spring used in the invention shows in perspective view;

6 shows the actuating mechanism used in the invention in perspective.

1 shows the clamping device according to the invention 10 on a busbar 12 how to be in an installation cabinet. From the busbar 12 stand cones 14 away, which serve as a busbar connection. Arranged on the busbar is a feed conductor 16 with a stripped part 18 , The situation illustrates an installation cabinet in which the feed-in manager 16 in front of the busbar 12 located. In 1 Here is the upper side of the front. This arrangement is increasingly being used.

The task is now the feed-in manager 16 electrically with the busbar 12 connect to. The object is achieved in that an electrically conductive clamping frame between the stripped part 18 the infeed conductor and the pin 14 is performed, wherein the stripped part 18 the feed-in manager 16 is clamped to the clamping frame and on the other hand a pin 14 is brought into electrical contact with the clamping frame by being pressed against it.

The solution looks in detail like this:
In the clamping device 10 becomes the clamping frame 20 provided. In the clamping frame penetrates a screw 22 from the front, ie in the picture from above. In the clamping frame is a pressure piece 24 that of the screw against the in the clamping frame 20 introduced stripped part 18 the feed-in manager 16 is pressed when the screw 22 is turned. With regard to the feed-in conductor, the clamping device is thus designed as a screw terminal.

In a first setting of the clamping device (clamping position) prevents a cage tension spring 26 in that the busbar connection (pin 14 ) can be pulled out of the clamping device and the required clamping force is applied.

The cage tension spring 26 is in the whole in 5 shown. It has a U-shaped body 28 on. According to the U-shape, the body has 28 a first leg 30 and a second leg 32 , Usually, the first leg 30 attached to a base and the second leg 32 stays mobile. The second leg 32 is then elastic against the first leg 30 pressed. Accordingly (see 2 ) the cage tension spring so attached to the clamping frame, that the first leg is disposed on a first outer side of the clamping frame. Attached to the second leg 32 is a clamping fork 34 , This surrounds (at a narrowed place 36 of the first thigh 30 ) the first leg 30 and gives a free space 38 between itself and the first leg. The open space 38 increases when the second leg 32 against a defined by the U-shape of the body spring pressure in the direction against the first leg 30 is pressed. To facilitate that the second leg 32 against the first leg 30 can be pressed is on the second leg 32 an extension 40 provided, which over the first leg 30 protrudes and due to the leverage the depression of the second leg 32 facilitated. Through the extension of the second leg 32 record a pressure effect of an actuator. There are several ways that this actuator may look like. In the preferred embodiment described herein, the actuator is a plate-shaped slider 42 , which is part of a mechanism for actuating the spring 26 is that in 6 shown in the whole and with 44 is designated.

The actuating mechanism comprises a roller 46 around a fixed axis 48 (fixed in the clamping device) is rotatable. Attached to the roller is a fork-shaped intermediate piece 50 , and at the fork-shaped intermediate piece fitted is the slider 42 , The attachment takes place via film hinges.

The hinges look like that from the roller 46 two cones 52 stand out, which conically rejuvenate. The intermediate piece 50 has two legs, each of which pins 54 stand out, which conically rejuvenate. The cones 52 and 54 are in pairs over a narrow elbow 56 connected together, which ensures the elasticity. Accordingly, a foot tapers 58 the fork-shaped intermediate piece 50 down to a jetty 60 , with the plate-shaped slider 42 is connected, wherein the plate-shaped slide is also a web 62 rejuvenated. The elasticity of the film hinges 56 and between the jetties 60 and 62 formed film hinge is ensured by the fact that the main body of the mechanism 44 to Be acting of the spring 26 (except the axis 48 ) is integrally formed and made of elastic plastic.

As in 3 To see, is in a rest position ensures that the slider 42 not as an actuator on the extension 40 the feather 26 acts. From the rest position, however, is the actuating mechanism 44 be brought. Here the roller points 46 a recording 64 into which a screwdriver or other tapered tool can be inserted. By turning the tool that acts as a lever (see arrow 66 in 3 ) can the roller 46 to be turned around. While the intermediate piece 50 in his in 3 shown rest position is tilted by an angle of 30 degrees to 50 degrees, it turns during rotation of the roller 46 in the direction of the clockwise direction perpendicular, causing the slider 42 moved down and on the extension 40 the feather 26 acts. The slider 42 presses the second leg with it 32 the cage tension spring 26 against the first leg 30 the cage tension spring 26 , As a result, the clamping fork moves 34 from a clamping position on the clamping frame 20 (at which it rests in the rest position) away (see, for. 2 ). It is then possible between clamping fork 34 and clamping frame 20 a pin serving as a busbar connection 14 insert or the entire clamping device on the unit of feed 16 and cones 14 aufzustecken. Now is the feed conductor in the clamping frame and is over the screw 22 connected and the pin 14 below the clamping frame and between clamping frame 20 and clamping fork 34 , so with the help of the tool, the roller 64 turned back to the in 3 illustrated rest position. As a result, the force of the spring, and the clamping frame acts 34 no longer presses directly against the clamping frame 20 but pushes the pin 14 against the clamping frame 20 , This is an electrical contact between pins 14 and clamping frame 20 produced.

The entire process of clamping to the busbar is done by pressing the tool twice, once in the direction of the arrow 66 ( 3 ) and back again, wherein preferably the clamping device is already provided open, so that the operator even has to work only once with the tool. It only has to be the feed-in manager 18 electrically with the clamping frame 20 get connected. This is the screw 22 intended. To pass through the screw, the spring 26 in the two thighs 30 and 32 suitable openings 67 and 68 on (see 5 as well as the representation with screw 22 in 4 ). On the screw can now by means of a conventional screwdriver through an open access 70 in the case 72 the clamping device can be accessed, and the feeder can be clamped to the clamping frame.

Thus, over the clamping frame 20 an electrical contact between the feed conductor 16 and busbar 12 produced.

Disconnecting the DIN rail mounted device 10 with the clamping device is just as fast as the clamping. Again, with the help of the tool according to the arrow 66 in 3 a movement of the roller 46 done in a clockwise direction, which causes the intermediate piece 50 sets up and the slide 42 against the extension 40 is pressed, causing the clamping fork 34 is pressed down again and the pin 14 releases. Is also the screw 22 with the pressure piece 24 from the feed ladder 18 solved, then the DIN rail mounted device can be easily pulled out of the installation cabinet again.

The advantage of the clamping device according to the invention is not only that the assembly can be done very quickly both when clamping and when loosening. In particular, unlike clamping devices of the prior art can be used in installation cabinets, in which the head 16 in front of the busbar 12 located.

Claims (14)

Clamping device ( 10 ) for a DIN rail mounted device for the electrical connection of a feeder ( 16 ) with a busbar ( 12 ) with: - a clamping frame ( 20 ) into which the feed-in manager ( 16 ) is insertable there to be clamped with him, - a cage tension spring ( 26 ), which has a U-shaped body ( 28 ), whose first leg ( 30 ) on a first outer side of the clamping frame ( 20 ) is arranged, and at the second leg ( 32 ) a clamping fork ( 34 ) is fitted, which the clamping frame ( 20 ) and a terminal point for the busbar at a second, the first outer side opposite outside of the clamping frame determines, and with - an actuating element ( 42 ), the second leg ( 32 ) of the U-shaped body ( 28 ) in the direction of its first leg ( 30 ) and the clamping fork ( 34 ) can push away from the clamping position, so that a busbar connection ( 14 ) between clamping fork ( 34 ) and clamping frame ( 20 ) is insertable, so that upon completion of the pressure by the actuating element ( 42 ) the cage tension spring ( 26 ) the clamping fork ( 34 ) pushes back into the clamping position and so the busbar connection ( 14 ) from the outside to the clamping frame ( 20 ) presses. Clamping device ( 10 ) according to claim 1, characterized in that the actuating element ( 42 ) via an actuating mechanism ( 44 ), which in a first setting, the spring force of the cage tension spring ( 26 ) at least so far releases that the clamping fork ( 34 ) Pressure in the direction against the clamping frame ( 20 ) and in a second setting pressure on the actuating element ( 42 ) and thus on the spring ( 26 ) and keeps a terminal space for the busbar connection open. Clamping device ( 10 ) according to claim 2, characterized in that the actuating mechanism ( 44 ) a roller ( 46 ), which can be rotated from a rest position corresponding to the first setting to a printing position corresponding to the second setting. Clamping device according to claim 3, characterized that the roller is a receptacle for a Having tool with which it can be rotated. Clamping device ( 10 ) according to claim 3 or 4, characterized in that the roller ( 46 ) about film hinges ( 56 ) on a slider ( 42 ) acts as an actuating element, which upon rotation of the roller ( 46 ) moved translationally. Clamping device according to claim 2, characterized that the actuating mechanism a Pushbutton arrangement, an eccentric shaft arrangement or a lever arrangement is. Clamping device ( 10 ) according to one of the preceding claims, characterized in that the actuating element ( 42 ) on an extension ( 40 ) on the second leg ( 32 ), which over the first leg ( 30 protruding). Clamping device ( 10 ) according to one of the preceding claims, characterized in that a screw ( 22 ) in the clamping frame ( 20 ) and a pressure piece located there ( 24 ), whereby screw ( 22 ) and pressure piece ( 24 ) for clamping the infeed conductor ( 16 ) in the clamping frame ( 20 ) serve. Clamping device ( 10 ) according to claim 8, characterized in that the screw ( 22 ) from the first outer side into the clamping frame ( 20 ) penetrates through a screw opening ( 66 . 68 ) penetrates in the two legs of the cage tension spring. Modular device, in particular circuit breaker, with a clamping device according to one of the preceding claims. Cage tension spring ( 26 ) with: - a U-shaped body ( 28 ) with a first leg ( 30 ) and a second leg ( 32 ) - one on the second leg ( 32 ) clamped fork ( 34 ), which the first leg ( 30 ) laterally surrounds and a free space ( 38 ) between itself and the first leg ( 30 ), which increases when, against a spring pressure defined by the U-shape, the second leg ( 32 ) in the direction of the first leg ( 30 ), - an extension ( 40 ) on the second leg ( 32 ), which over the first leg ( 30 ) and is adapted to receive a pressure effect in which the second leg is pressed against the first leg, characterized by a suitable for the implementation of a bolt bolt opening ( 66 . 68 ) in both thighs. Mechanism ( 44 ) for actuating a spring with a roller ( 46 ) around a fixed axis ( 48 ) is rotatable to assume at least two angular positions, which thereby in two translational positions of a slider ( 42 ) that roll ( 46 ) and slides ( 42 ) via an intermediate piece ( 50 ), wherein the compounds of roll ( 46 ) and intermediate piece ( 50 ) on the one hand and slides ( 42 ) and intermediate piece ( 50 ) on the other hand as film hinges ( 56 ; 60 . 62 ) are formed. Mechanism ( 44 ) according to claim 12, characterized in that the intermediate piece ( 50 ) Is Y-shaped, with the roller ( 46 ) in each case via a film hinge ( 56 ) is connected to each of the two legs of the Y-shape and the slide ( 42 ) via a film hinge ( 60 . 62 ) with one foot ( 58 ) is connected to the Y-shape. Mechanism ( 44 ) according to claim 12 or 13, characterized in that roller ( 46 ), Intermediate piece ( 50 ) and slides ( 42 ) are integrally formed.