CZ2004169A3 - The title is not available - Google Patents

Abstract

The invention relates to a terminal (1) that comprises a first clamping means (2) and a clamping frame (6) with a first and a second leg (7, 8) and a first receiving compartment (9). The two legs (7, 8), with their free ends (11, 12), configure a second clamping means (3) with a second receiving compartment (13), thereby providing a further possibility of connection.

Description

Technical field

The invention relates to a connection clamp with a first clamping means provided with a clamping piece, a clamping screw and a clamping frame, the clamping frame comprising first and second arms and a space for clamping at least one conductor.

The connection or connection terminal is used for connection, connection and branching of one or more current circuits. which are not interrupted during operation.

BACKGROUND OF THE INVENTION

DE 693 02 103 T2 discloses a connection terminal which is designed as a universal terminal.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a connection terminal which provides additional connection possibilities.

Starting from known prior art split-terminal connection terminals, which also provide multiple connection possibilities, a new idea of the present invention is that in addition to the aforementioned conductor mounting space, a further conductor mounting space is provided.

This object is solved by the aforementioned type of connection clamp such that the free cages of the two arms of the second clamping means form a second conductor receiving space. In addition to the possibility of connecting one conductor in the first space by means of the first clamping means, it is also possible to connect another conductor, in particular another conductor, a second space by means of a second clamping means. As a result, there is no need to use standardized wire receiving holes. The aforementioned arms thus represent a simple and cost-effective design of the second clamping means. The invention is particularly suitable for use in relays, contactors, series devices, line circuit breakers or motor circuit breakers.

The second clamping means is preferably in the form of a collet clamp. In this case, either the conductor is inserted into the other clamping means due to the second conductor clamping space open from one side, or, in the opposite case, the other clamping means is fixed to the conductor. A second open conductor space provides other possibilities, for example, visual inspection of the position of the conductor and / or control of the desired contact with the conductor. The connection clamp thus offers a number of connection options, since the second clamping means designed in the manner of a collet clamp can be used alone or in combination with the first clamping means.

According to a first exemplary embodiment of a connection clamp, the first arm extends through the second arm. In this way, a substantially favorable geometrical design is achieved, in the form of a collet-like clamping means, which also ensures a proper gripping of the conductor depending on its shape.

According to a second exemplary embodiment, the two arms of the clamping means cross each other. According to a simple embodiment, the first arm is provided with an opening for receiving the conductor. In particular, this opening serves to accommodate an uninsulated conductor of a small cross-section. This embodiment is particularly suitable for a single-wire conductor.

The collet-shaped clamping means is provided with at least one cutting edge, by means of which it is possible to make contact with the non-insulated conductor located therein without the need for an additional structural element.

Advantageously, the two arms can also be designed as resilient elements such that the repeated clamping and release of the conductor is achieved by a self-clamping clamp. This embodiment thus does not require additional, possibly necessary, flexible elements.

In the first conductor clamping chamber there is also a clamping wedge which allows the force to be transferred from the clamping screw to the collet.

BRIEF DESCRIPTION OF THE DRAWINGS

Further advantages and exemplary embodiments of the invention are explained in more detail by the accompanying drawings. Here means:

Giant. 1 shows a terminal clamp in side view, with first and second clamping members;

Giant. 2 is a cross-sectional view of the terminal of FIG. 1;

Giant. 3 is a side view of the second clamp of the connection terminal;

Giant. 4 is a top view of the unfolded second clamping means of FIG. 3;

Giant. 5 to 7 show the connection terminal of FIG. 1 housed in the cover shown in partial cutaway, shown in different views;

Giant. 8-10 show the connection terminal according to FIG. 1 with one conductor connected in the second clamping means, shown in different views;

Giant. 11 to 13 show the connection terminal according to FIG. 1 with one conductor connected in the second clamping means, shown in different views;

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Giant. 14 to 16 show the connection terminal of FIG. 1 with one conductor connected in the first clamping means and the other conductor connected in the second clamping means, shown in different views;

Giant. 17-19 show the terminal of FIG. 1 with one conductor connected in the first clamping means, shown in different views;

Giant. 20-22 illustrate the terminal of FIG. 1 in another exemplary embodiment shown in various views;

DETAILED DESCRIPTION OF THE INVENTION

1 and 2 show a connection terminal I with a first clamping means 2 and a second clamping means 3, the first and second clamping means 2 and 3 having a clamping piece 4 and a clamping screw

5. The first clamping means 1 comprises a clamping frame 6, which consists of two arms 7 and 8, thus forming a first space 9 for connecting at least one conductor. The first space 9 comprises a clamping wedge 10, which can thus be a stable part of the connection. The two arms 7, 8 form, at their ends 11 and 12, a second clamping means 3 with a second space 13 for connecting at least one further conductor.

The clamping piece 4 is formed by first and second webs 14 and 14, respectively. 15, the first bridge 14 is provided with a guide 16 for the head 17 of the clamping screw 5. The second bridge 15 serves as a support 18 for the second end 19 of the clamping screw 5. The clamping screw 5 is thus arranged between the two bridges 14, 15. the bridge 15 extends into a clamping frame 6 arranged at right angles to the clamping piece 4. The clamping frame 6 also comprises a second internally threaded guide 20 in which the clamping screw 5 is screwed.

The clamping frame 6 has the shape of an almost rectangular profile, with the arms 7, 8 of the clamping frame 6 being deflected diagonally from one another on the opposite side of the clamping piece 4. In this case, the second arm 8 passes through an opening (not shown), which is not shown here, which is formed in the arm 7. The two arms 7, 8 are subsequently subsequently inclined to form free ends 11, respectively. 12, which are parallel to the longitudinal sides of the clamping frame 6. The free ends 11, 12 are provided with at least one clamp 22 on the inner sides of the second conductor connection space 13. Instead of the opening 21 located in the arm 7 through which the arm 8 passes. the arms 7, 8, formed as resilient elements, also cross or overlap.

The first clamping means 2 and the first conductor connection space 9 are closed and are generally used for connecting or securing the conductor. for attaching the prepared conductor of different cross-section. The second clamping means 3 and the second conductor connection space 13 are open on the one hand and can be used for connection respectively to the first connection space 9, respectively. to hold the non-insulated conductor since the first space 9 is separated from the second space 13. The free ends 11, 12 of the second clamping means 3 are thus designed in the form of a collet clamp.

By rotating the clamping screw 5, synchronous movement is achieved with the clamping piece 4 in the direction of the clamping wedge 10. Upon further tightening of the clamping screw 5, the clamping piece 4 directly pushes the clamping wedge W, and this clamping wedge 7, 8. As a result 8, move relative to each other and thus reduce the second space 13 of the second clamping means 3. This initiates the process of connecting one conductor.

If there is an uninsulated conductor in the second space 13, it is compressed by both free ends H, 12 so that the clamps 22 break the conductor insulation, thereby contacting the conductor. The clamps 22 thus form a positive fit with the stripped conductor. The fixed clamps 22 of the second clamping means 3 allow one conductor to be connected without the clamping screw 5 being required, since the second clamping means 3, in the form of a collet clamp, is open on one side. The clamps 22 may be made of a separate material or may be formed as contact surfaces.

If the conductor is in the first space 9 of the first clamping part 2, the clamping part 4 first pushes on the conductor during further tightening of the clamping screw 5. The conductor thus presses on the clamping wedge 10 so that both the first clamping means 2 and the second clamping means 3 are actuated. The clamping process can also take place without the conductor located in the second space 13; As a result, the two free ends 11, 12 are pressed against each other. As a result, the clamping frame 6 has a sufficiently high rigidity and the conductor in the first clamping means can thus be reliably clamped.

In the so-called rest position of the terminal 1, the terminal formed in the manner of a collet is opened. When the clamping screw 5 is tightened in the connection terminal 1, both clamping means 2 and 3 are activated. When the clamping screw 5 is released, the second clamping means 3 in the form of a collet clamp spring back to its initial position. The second clamping means 3 thus seeks to reach its rest position by the action of the restoring forces.

FIG. 3 shows the second clamping means 3 of FIG. 1, with its arm 7 having a through hole 23a for receiving the conductor. Optionally, this arm 7 may still be provided with a projection 24 in which another through hole 23b is formed.

FIG. 4 shows the second clamping means 3 in the deployed state. The opening 21 provided in the first leg 7, designed to pass through the second leg 8, is approximately square in shape. In this case, the opening 21 can be formed so as to reach the very edge as indicated by the two slots 21a and 21b, thereby facilitating the lateral positioning of the second arm 8 in the first arm 7.

FIG. 5 is a perspective view of the terminal 1 of FIG. 1 housed in the housing 25 shown in partial cut-out; 3 are open, ie in a state where they are not performing their activity. 6 and 7, the terminal 1 of FIG. in section.

FIG. 8 is a perspective view of the terminal 1 of FIG. 1 with the conductor clamped in the second clamping means 3, the first clamping means 2 being clamped almost to the stop by the clamping screw 5; 9 and 10, the terminal 1 of FIG. in section.

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FIG. 11 is a perspective view of the terminal 1 of FIG. 1 with the conductor clamped in the second clamping means 3, wherein the first clamping means 2 is screwed in to the stop. 12 and 13, the terminal 1 of FIG. in section.

Fig. 14 is a perspective view of the terminal 1 of Fig. 1 with one conductor clamped in the first clamping means 2, and a second conductor clamped in the second clamping means 3. Figs. 15 and 16 show the terminal clamp Ί of Fig. 14. shown in side view, respectively. in section.

FIG. 17 is a perspective view of the terminal 1 of FIG. 1 with one conductor clamped in the first clamping means 2, the second clamping means 3 being clamped by the clamping screw 5. 18 and 19, the terminal 1 of FIG. in section.

It is apparent from the above-described figures that the two conductor connection spaces 9 and 13 are independent of each other and can be used as desired.

The connection terminal 1 represents a combination of a conventional clamping means with another clamping means with a device provided with contacts or a wire stripping device. This combination connector is also capable of being used within a single clamping means alone.

FIG. 20 shows a variant of the terminal 1 according to FIG. 1. The U-shaped clamping frame 6 is made of a flat material and consists of two free arms 7 and 8. The free arm 8 of the clamping frame 6 is provided with a plurality of longitudinal holes. 21, wherein the opposite arm 7 is provided with bent lamellas 26 extending through the longitudinal openings 21, and together they form a second enclosed space 13 for connecting at least one conductor.

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Also in this exemplary embodiment, a relative movement or relative displacement between the clamping frame 6 and the clamping wedge 10 is achieved by the force exerted by the clamping screw 5.

The clamping movement according to this embodiment is similar to that of the scissor mechanism, and the clamping force is only exerted when one conductor is inserted into the other space 13. Advantageously, the conductor located in the second space 13 can also be stripped off. Sharp edges occurring after the pressing process on the slats 26 may possibly act as cutting edges when clamping the conductor. When the conductor is clamped over its entire circumference, the clamping force is distributed due to the plurality of slats 26, resulting in only a slight notch effect and deformation of the conductor, including a small risk of conductor break. 21 and 22 show a side view of the terminal I of FIG. 20 without a conductor and a conductor.

An essential inventive idea of the present invention is that the tightening of the clamping screw 5 in the plane perpendicular to the longitudinal axis of the clamping screw is used to strip the conductor and / or to make contact between the conductor and the terminal 1.

Connection terminals of this kind can be used, inter alia, in relays, contactors, series devices, line circuit breakers or motor circuit breakers.

Claims (9)

PATENT CLAIMS A connection clamp (1) with a first clamping means (2), a clamping piece (4), a clamping screw (5) and a clamping frame (6), the clamping frame (6) having a first arm (8) and a second arm ( 7) and a first conductor connection space (9), characterized in that both arms (7, 8) form, with their free ends (11, 12), a second clamping means (3) with a second conductor connection space (13). Connection terminal (1) according to claim 1, characterized in that the second clamping means (3) is designed as a collet terminal. Connection terminal (1) according to claim 1 or 2, characterized in that the second arm (8) extends through the first arm (7). Connection terminal (1) according to claims 1, 2 or 3, characterized in that the two arms (7, 8) cross each other. Connection terminal (1) according to one of the preceding claims, characterized in that the first arm (7) is provided with through holes (23a, 23b) for receiving the conductor. Connection terminal (1) according to one of the preceding claims, characterized in that the collet-like terminal (22) is provided with at least one cutting edge. Connection clamp (1) according to one of the preceding claims, characterized in that the two arms (7, 8) are designed as resilient elements. Connection terminal (1) according to one of the preceding claims, characterized in that the first space (9) comprises a clamping wedge (10). Connection clamp (1) according to one of claims 1, 3-5, 7 or 8, characterized in that the two arms (7, 8), simply bent, form a second enclosed space