WO2006084421A1

WO2006084421A1 - Electromagnetic switch device in particular a contactor

Info

Publication number: WO2006084421A1
Application number: PCT/DE2005/000205
Authority: WO
Inventors: Johann Drexler; Peter Hartinger
Original assignee: Siemens Aktiengesellschaft
Priority date: 2005-02-07
Filing date: 2005-02-07
Publication date: 2006-08-17
Also published as: CN1918684A; EP1846944A1; EP1846944B1; HK1097346A1; CN100521034C; DE112005003539A5

Abstract

The invention relates to an electromagnetic switch device (15), in particular a contactor. According to the invention, the manipulation of coil connectors for an electromagnetic switch device may be improved with the use of a coil connector clamping block (1, 2, 3, 4) with at least one coil connector clamp (5, 6), whereby the at least one coil connector clamp (5, 6) lies on a plane (8) with an auxiliary switch connection (30).

Description

description

Electromagnetic switching device, in particular contactor

The invention relates to an electromagnetic switching device, in particular a contactor.

To control a contactor, a voltage must be applied to the contactor drive. For this purpose, it is known to provide at least two fixed to the contactor housing coil terminals. Since contactors can be combined in different ways with other switching devices, these coil terminals are often covered, so that they are partially provided elsewhere in the contactor housing again. In particular, if the coil terminals are arranged next to the connection terminals for the main current flow or auxiliary current path, so that the coil terminal is accessible from the front, at least one coil terminal is less accessible when combined with other switching devices. In addition to these devices, where the coil terminals are located in a terminal level with the main and auxiliary conductor terminals, switching devices are known in which the coil terminals are located under the main conductor terminals. In such switching devices accessibility is further complicated due to the even more complex structure when the

Main conductor is connected. When attaching additional switching devices, such as a circuit breaker and / or an overload relay, the coil terminals in these cases are no longer accessible.

An object of the invention is to improve the manageability of coil terminals in an electromagnetic switching device.

This object is achieved by an electromagnetic switching device according to claim 1. Thereafter, an electromagnetic switching device with a number of auxiliary switch terminals and a coil terminal block provided with at least one coil len terminal, wherein at least one coil terminal of the coil terminal block is in a plane with an auxiliary switch terminal of the switching device. This ensures that the coil terminal can be contacted together with the auxiliary terminals, for example by means of a plug. Through the use of a common connector, the connection and thus the handling of the switching device is much easier.

With the invention, coil terminals, irrespective of various structures and connection techniques, can be provided flexibly and in a much more accessible manner compared with the known solutions.

Advantageous embodiments of the invention are specified in the subclaims.

Particularly advantageous is an arrangement of the coil connection on the front side of the switching device. Coil connection terminals can then be arranged universally in such a way that accessibility from above, from below and from the front can be realized without the coil connection terminals having to be provided at several different locations. Thus, not only the construction of switching devices is greatly simplified. The handling of such a switching device is significantly improved because a connection from the front is possible.

With the use of a front electrically and mechanically pluggable coil terminal block a particularly simple handling is achieved. By making a single connector, the coil terminal block is not only mechanically but also electrically connected to the switching device. Elaborate additional connections omitted.

The coil connection terminal block allows optimal accessibility for any configuration of the switching device. To the terminals of the coil terminal and thus prevents wires must be routed through other switching devices.

In this case, terminals with different connection techniques, such as screw connection, insulation displacement terminal, push-in technology, cage tension spring, etc., can be plugged into the switching device. If the switching device is a contactor in which, for example, the main conductor terminals are screwed, all possible connection variants, including the auxiliary and control conductors, can be plugged. In other words, the switching device is prepared for a plug-in connection at auxiliary and control conductors.

With the aid of the invention, it is possible to reduce the number of different required designs for switching devices. Even if the switching devices provide different connection techniques at the control terminals, they can be combined with each other by means of the invention. Due to the plug connection, replacement of the coil connection terminal block and thus a change in the connection technology is possible in a simple way and can also be carried out by the user.

Preferably, the front insertable Spulenanschlussklem- block is provided as the sole coil connection. Further coil connections in the direction of the upper connection side or in the direction of the lower connection side of the switching device are not provided in other words. As a result, the structural design of the switching device is greatly simplified, without the functionality of the switching device suffers. Of course, it is also possible to use the coil terminal block according to the invention as a supplement to existing stationary coil terminals. It when the coil terminals are arranged in stages one above the other is particularly advantageous. As a result, different contacting levels can be defined.

A coil connection terminal block with coil terminals arranged one above the other in stages can preferably be turned in its connection direction. The coil terminal block is then j e after contact with the switching device both from below and from above contacted. In other words, it is possible, for example, to insert the coil terminal block with its higher level toward the upper terminal side or toward the lower terminal side of the switching device. As a result, the universal applicability of the Spulenanschlussklemmen- block invention is further improved. Depending on which device combinations or connection variants are desired, the different connection levels can be aligned upwards or downwards.

The invention will be described below with reference to embodiments, which are explained in more detail with the aid of the drawings. Hereby show:

1 shows a first known from the prior art contactor,

2 shows a second known from the prior art

contactor,

3 shows a coil terminal block according to the invention, FIG. 4 shows a coil terminal block according to the invention, FIG. 5 shows a coil terminal block according to the invention, FIG. 6 shows a coil terminal block according to the invention, FIG. 7 shows an inventive switching device, FIG. 8 shows a contactor according to the invention with a plugged-in contactor

Coil terminal block 9 shows a contactor according to the invention with coil terminal block and auxiliary switch block 10 shows a combination of a circuit breaker with a contactor according to the invention, FIG 11 shows a combination of a contactor according to the invention with an overload relay and 12 shows a combination of a circuit breaker with a contactor according to the invention and an overload relay.

1 shows a known from the prior art contactor 101, which is shown with its rear side 102 down and with its front side 103 facing upwards. On the front side 103 of the contactor 101, an upper terminal row 105 is provided in the direction of the contactor upper side 104, and a lower terminal row 107 is provided in the direction of the contactor lower side 106. In each case, the two terminal rows 105, 107 comprise three main current terminals 108, one auxiliary switch terminal 109 and one coil terminal 110. The upper terminal row 105 and the lower terminal row 107 lie in one plane. Main current, auxiliary switch and coil terminal 108, 109, 110 are designed as screw connections. The upper terminal row 105 serves as the input side and the lower terminal row 107 as the outlet side.

In the case of the contactor 111 shown in FIG. 2, which is likewise known from the prior art, instead of five, only three connections each are provided on the same width as that of the contactor 101 from FIG. 1, so that larger connection cross-sections are provided can be used to switch higher currents. Since the main power connections 108 occupy the entire width of the contactor 111, four receptacles 112 for additional auxiliary switches (not shown) are provided on the front side 103 of the contactor 111. However, auxiliary switches can also be clamped laterally on the recesses 113 of the contactor housing provided for this purpose. To connect the coils, two coil terminals 114 are provided on the contactor lower side 106 and on the contactor upper side 104, respectively, which are conductively connected to one another diagonally through the contactor housing. If, for example, a sol- rather contactor 111 is connected on its underside 106 or its upper side 104 to a further switching device or the like, then individual coil terminals 114 are completely concealed in such a way that either coil input or coil output can no longer be contacted.

3 to 6 show coil terminal blocks 1, 2, 3, 4 according to the invention. The coil terminal block 1 shown in FIG. 3 has two coil terminals 5, 6, which are arranged stepwise in two connection layers I ₁ 8 arranged one above the other. On its underside 9, the coil terminal block 1 has two plug contacts 10 in the form of contact pins. These serve the simultaneous mechanical and electrical plug-in contacting of the coil terminal block 1 with a contactor according to the invention. The coil connection terminals 5, 6 can be designed with clamping connections and / or plug connections and / or screw connections (FIG. 6). Alternatively, the arrangement of spring tension terminals (FIG 5) is possible. In the simplest case, the plug contacts 10 on the underside 9 of the Spulenanschlussklem- block 2 are extended upward and protrude as corresponding terminal plug contacts 11 from the top 12 of the coil terminal block 2 addition (Figure 4). Of course, it is also possible that more than two coil connection terminals are integrated in a coil connection terminal block 3, 4. For example, it is possible that in each case two connection contacts are provided on the input side and on the output side (FIGS. 5 and 6). In variation with any gradations to form different connection levels 7, 8, this results in a variety of connection variants. The connection directions are shown in FIGS. 3 to 6 by arrows A. An alternative connection option in FIG. 3 shows arrow A '.

FIG. 7 shows an example of a contactor 15 according to the invention. In addition to the already known from FIG 2 three input-side main power connections 16 in an upper End row 17 and three outlet-side main power connections 18 in a lower terminal row 19 and three receptacles 20 for additional auxiliary switch (not shown), is provided on the front side 21 of the contactor 15, an additional plug-receiving member 22 for forming a plug connection. The receptacle 22 in this case has two receiving openings 23 for receiving the plug contacts 10 of a Spulenanschlussklemmenblocks 1, 2, 3, 4 in such a way that in an inserted coil terminal block terminal block 1, 2, 3, 4 whose plug contacts 10 in an electrical connection with the Coil terminals 24 on the contactor upper side 25 on the one hand and the Schützunters ^' eite 26 on the other hand. This connection can be created for example by a sheet metal part 27, a wire or the like from the connector receptacle 22 to the coil.

FIG. 8 shows the contactor 15 from FIG. 7 with the coil connection terminal block 1 attached. The coil terminal block 1 with its plug contacts 10 and the plug receptacle 22 on the front side 21 of the contactor 15 are designed in such a way that the coil terminal block 1 has its higher level 8 in the direction of the upper row of terminals 17 (as shown) can be used. Thus, the coil connection terminals 5, 6 are accessible from below (arrow A). Moreover, it is also possible to connect the coil connection terminals 5, 6 in the manner of installation shown in FIG. 8 from above (arrow B).

Alternatively, however, the coil connection terminal block 1 with its higher stage 8 can also be used (rotated by 180 °) in the direction of the lower connection row 19 of the contactor 15. This ensures that the coil connection terminals 5, 6 are also accessible from above (arrow B). In addition, it is also possible to connect the coil connection terminals 5, 6 in this type of mounting from below (arrow A). Due to the many connection variants, the coil terminal block offers a multitude of possible applications. At the same time, the coil connection terminal block 1 raises at least individual coil connection terminals 6 in the plane of the connection terminals 30 of mounted front-side auxiliary switch blocks 31, as illustrated by way of example in FIG. In this case, the input side upper terminals 30 of the front auxiliary switch blocks 31 can be contacted together with the higher upper terminal plane 8 of the coil terminal block 1 via a common plug (not shown), which facilitates accessibility.

10 shows a schematic representation of a combination of a circuit breaker 36 and a contactor 15 according to the invention. The contactor 15 is arranged below the power switch 36 and connected thereto. In other words, the power switch 36 adjoins the top 25 of the contactor 15. Thus, the hand control unit 37 of the circuit breaker 36 is freely accessible and is not covered by lines, a connection of the contactor 15 from below, ie from the direction of its bottom 26 is required. This uses a front auxiliary switch block (not shown) with the terminals down. The coil terminal block 1 is placed on the front side 21 of the contactor 15 so that the terminals 5, 6 point downward. In other words, all auxiliary lines

(not shown) to the contactor 15 brought from below to this, since the upper input side of the contactor 15 can not be used because of the adjacent circuit breaker 36. The connection direction is shown by arrow A.

FIG. 11 shows a schematic representation of a combination of a contactor 15 with an overload relay 39. The overload relay 39 is on the mechanical side of the output, that is arranged on the bottom 26 of the contactor 15. The coil connection terminal block 1 is arranged with its lower connection stage 7 in the direction of the contactor upper side 25, that is to say on the input side. From there he will be over a wire (not shown) contacted. In other words, the auxiliary conductor and coil are connected from above. The front auxiliary switch block (not shown) is used with the terminals up. The Spulenanschlussklem- block 1 is thus rotated so that the terminals 5, 6 show upward, so that all auxiliary lines are connected to the contactor 15 from above. The connection direction is shown by arrow A.

Finally, FIG. 12 shows a schematic representation of a combination of power switch 36, contactor 15 and overload relay 39. In this combination, in most known contactors the coil connections are concealed both above and below. The use of the coil connection terminal block 1 according to the invention ensures the accessibility of the coil connections. The front auxiliary switch block (not shown) is used with the terminals down. The coil terminal block 1 is also rotated so that the terminals 5, 6 point down so that all the auxiliary lines to the contactor 15 are connected from below. The manual control unit 37 of the circuit breaker 36 thus remains free. With the present invention, a simple contactability in this combination is possible at all. In addition, there is a variably selectable cable routing over only one device, with preferably a cable routing over the overload relay 36 is selected. The connection direction is shown by arrow A.

Claims

claims

1. An electromagnetic switching device (15), in particular a contactor, with a number of auxiliary switch terminals and a coil terminal block (1, 2, 3, 4) with at least one coil terminal (5, 6), characterized in that the at least one coil terminal (5, 6) in a plane (8) with a Hilfsschalteran- circuit (30).

2. Switching device (15) according to claim 1, g e k e n n e c e n e d d e r c h an electrically on the front side (21) of the switching device (15) plug-in coil terminal block (1,

2. 3, 4).

3. Switching device (15) according to claim 1 or 2, e e c e e n e e c h e s e d h e a mechanically on the front side (21) of the switching device (15) pluggable coil terminal block (1, 2, 3, 4).

4. Switching device (15) according to any one of claims 1 to 3, e e c e n e e c h e e s a more, in stages (7, 8) arranged one above the other coil terminal terminals (5, 6) of the coil terminal block (1, 2, 3, 4).

5. Switching device (15) according to claim 4, characterized in that the coil terminal block (1, 2, 3, 4) depending on the arrangement on the switching device (15) can be contacted both from below and from above.