MX2012013789A

MX2012013789A - Multi-pole electrical switch.

Info

Publication number: MX2012013789A
Application number: MX2012013789A
Authority: MX
Inventors: Zbynek Augusta; Lukas Kalous; Pavel Mrtvy; Filip Musil; Pavel Naiman; Milos Petracek; Daniel Vavra
Original assignee: Siemens Ag
Priority date: 2011-12-01
Filing date: 2012-11-28
Publication date: 2013-06-17
Also published as: DE102011087582A1; CN103137350B; CN103137350A

Abstract

The electrical switch has a switch housing (10) having pole cassettes (20,30,40) for each electrical pole of switch. Each cassette has electrical contact elements for switching the electric pole. The cassettes with its side walls (21,31) are adjacent to each other. The sidewalls are provided with recesses (22,32) that are partially opposed to each other. A channel (70) is extended in parallel to side walls in longitudinal direction. A connector (50) is pushed into channel, by positive connection between side walls and connector respectively. An independent claim is included for a method for assembling a multi-pole electrical switch.

Description

MULTIPOLAR ELECTRICAL SWITCH FIELD OF THE INVENTION.

The invention relates to a multi-pole electric switch with in each case a polar housing for each electrical pole of the switch, each polar housing having in each case electrical contact elements for switching the respective electrical pole and at least two of the pole housings being located with its adjacent side walls side by side in a switch box.

BACKGROUND OF THE INVENTION.

Such a multipolar electric switch is known, for example, from European patent EP 1 464 063 Bl. In this previously known electric switch the polar housings are spatially arranged side by side and joined together by connecting rods, which extend perpendicular to the side walls through the polar housings.

BRIEF DESCRIPTION OF THE INVENTION The invention is based on the objective of indicating a multipolar electric switch, which has a particularly high mechanical stability.

This object is solved according to the invention by means of a switch with the characteristics according to claim 1.

Advantageous configurations of the switch according to the invention are indicated in the dependent claims.

Therefore, according to the invention, it is provided that the side wall of one of the at least two polar housings has a first recess and the side wall of the adjacent pole housing has a second recess, the two recesses oppose each other at least by segments and form a channel, whose longitudinal direction extends parallel to the two adjacent side walls, and a connecting body is inserted into the channel, which by means of a positive connection between a side wall and the connecting body and by a connection with Shape drag between the adjacent side wall and the connecting body together establishes a positive engagement between the two polar housings located side by side.

An essential advantage of the switch according to the invention is that a firm connection between adjacent pole housings can be established with the aid of the connection body provided according to the invention, so that in case of a high mechanical load, for example in the case of a current of short circuit flowing through one or more of the pole housings of the commutator, a distribution of the mechanical forces by the connecting body or bodies to adjacent polar housings may occur. In other words, therefore, with the connecting bodies provided according to the invention, it is possible to achieve a mechanical load distribution to the polar housings connected to one another through the connecting bodies.

A further essential advantage of the switch according to the invention is that a simple assembly is possible, because the connecting body for joining the polar housings only has to slide between the side walls of the polar housings to be joined, along of a direction parallel to the side walls.

In a particularly simple and therefore advantageous manner, a form-fitting connection can be achieved between the connecting body and the adjacent side walls, when the first recess, the second recess and the two external surfaces directed to the two recesses are of the connecting body they present in each case a notch.

It is considered especially advantageous, that the shape of the first recess is complementary to the shape of the outer surface segment associated with the first recess, of the joining body and that the shape of the second recess is complementary to the shape of the outer surface segment associated with the second. recess, of the connecting body.

In order to enable not only a connection of the pole housings with each other, but also also with other parts of the switch, it is considered advantageous for the connecting body to have a through hole, which extends parallel to the two adjacent side walls and in parallel to each other. the longitudinal direction of the channel.

Preferably, a screw is guided through the through hole, which screws two case parts of the switch box together.

It is considered advantageous if the switch box has a lower casing part, into which the polar housings are inserted, and that an upper casing part is arranged in the lower casing part and is screwed with the lower casing part by means of the lower casing part. screw guided through the through hole.

In order to guarantee a uniform flow of forces between adjacent polar housings, it is considered advantageous if the two adjacent pole housings are connected to each other in a positive manner by means of at least two connecting bodies and that the longitudinal direction is arranged in parallel two bodies of union.

In particular, the side walls of the two adjacent pole housings are kept at a distance by the connecting body (s).

In order to guarantee a defined position of the polar housings relative to each other, it is considered advantageous if at least one positioning element, which belongs to a thermomagnetic activation device, jointly determines at least the relative position between the two adjacent polar housings. A positioning element of this type is preferably formed through a segment of a box of the thermomagnetic activation device. The positioning element is preferably formed in one piece in the box. Preferably the positioning element holds the two adjacent polar housings at a predetermined distance.

Furthermore, it is considered advantageous if the housing of the thermomagnetic activation device and / or the switch box, for example the lower housing part and / or the upper part of the switch housing, have reinforcement ribs. At least one of the reinforcing ribs is preferably located in the lower casing part and preferably extends transversely or perpendicular to the side walls of the polar housings.

The invention also relates to a method for mounting a multi-pole electric switch, in which a polar housing is inserted in a switch box for each electrical pole of the switch in such a way that at least two of the polar housings are they place their adjacent side walls side by side.

According to the invention, with respect to such a method it is provided that the side wall of one of the at least two polar housings has a first recess and the side wall of the adjacent polar housing has a second recess and that the two recesses are placed opposite each other. each other at least by segments and a channel is formed, the longitudinal direction of which extends parallel to the two adjacent side walls, and a connecting body is inserted into the channel, with which a connection is established with a positive fit between a side wall and the connecting body and a positive engagement between the adjacent side wall and the connecting body and thus together a positive engagement between the two polar housings located side by side.

With respect to the advantages of the method according to the invention, reference is made to the above embodiments in relation to the switch according to the invention, because the advantages of the method according to the invention essentially correspond to those of the switch according to the invention.

It is considered advantageous for the connecting body to have a through hole, which extends parallel to the two adjacent side walls and parallel to the longitudinal direction of the channel, through which a screw is guided through the through hole and which is screwed with this screw. screw together two box parts of the commutator box.

Then . the invention is explained in more detail by way of exemplary embodiments; in this respect they show by way of example BRIEF DESCRIPTION OF THE FIGURES. 1 shows a segment of a three-pole electric switch according to the invention, it being possible to recognize the arrangement of polar housings is guided through a connecting body, as shown by the switch in a commutator switch box as well as the operating mode of two connecting bodies for the union of the polar housings, 2 shows an exemplary embodiment for a connecting body, such as can be used for joining two polar housings in the switch according to FIG. 1, in more detail, 3 is an exemplary embodiment for a connection between a lower housing part of the switch housing and an upper housing part of the switch housing with the aid of a screw, which in FIG. 2, FIG. 4 shows an exemplary embodiment for the design of a thermomagnetic activation device box, whose positioning elements jointly determine at least the position or relative position between adjacent polar housings, FIG. 5 shows an exemplary embodiment for the configuration of the side walls of the polar housings in such a way that for the connection of adjacent pole housings in each case two connecting bodies can be used, and 6 shows an exemplary embodiment for the configuration of a lower casing part of the commutator box with a transverse reinforcing rib.

In figures for reasons of clarity, for identical or comparable components the same reference numbers are always used.

DETAILED DESCRIPTION OF THE INVENTION.

Figure 1 shows parts or parts segments of a three-pole electric switch. A segment of a switch box 10 is recognized, comprising a lower box part 11. In the lower housing part 11 there are three polar housings 20, 30 and 40, which are arranged side by side and which have a predetermined distance from each other.

For joining the three polar housings 20, 30 and 40 to one another, among other things, two connecting bodies 50 and 60 are provided.

Figure 1 shows that the connecting body 50 is disposed between the polar housing 20 and the polar housing 30, and joins these two polar housings together. To make this connection possible, a first recess 22 is provided in the side wall 21 of the polar housing 20, in which the connection body 50 engages. For joining the two polar housings 20 and 30, the connecting body 50 cooperates with a second recess 32, which is provided in the side wall 31 of the polar housing 30. The first recess 22 in the side wall 21 and the second recess 32 in the side wall 31 oppose each other, so that a channel 70 is formed by the two recesses 22 and 32.

The channel 70 extends parallel to the two lateral walls 21 and 31 and enables an insertion of the connecting body 50 in one direction, which is parallel to the two lateral walls 21 and 31. The two recesses 22 and 32 as well as the connecting body 50 are formed in such a way that a positive connection between the two polar housings 20 and 30 is achieved through the connecting body 50. To form this connection with form drag, the shape of the first recess 22 · is complementary to the shape of the outer surface segment 51 associated with the first recess 22, of the joint body 50. Both the first recess 22 and the complementary outer surface segment 51 have notch zones, through which the connection between the two parts is made possible by positive engagement.

Correspondingly, the second recess 32 is formed in the side wall 31 of the polar housing 30. It also has notches, which enable the outer surface segment 52 associated with the second recess 32 of the connecting body 50 to establish a form-fitting connection between the connecting body 50 and the polar housing 30. The first recess 22 as well as the second recess 32 preferably form guiding rails, which are oriented parallel to each other and make it possible to guide the connecting body 50 along the rail direction and therefore along the longitudinal direction of channel 70.

The connecting body 60 is formed with respect to its two outer surface segments in the same way as the connecting body 50. In this way, the connecting body 60 enables a positive engagement between the polar housing 30 and the polar housing 40, because there are also recesses in the side walls in the contact area between the polar housings 30 and 40. the two outer surface segments of the connecting body 60 can be engaged in a positive manner.

The function of the two joining bodies 50 and 60 therefore consists in establishing a connection with form drag between the three polar housings 20, 30 and 40 and keeping them at a distance in a defined manner. If, for example, in the case of a short-circuit current, a high mechanical force acts on one or more polar housings, this force is transmitted through the connecting bodies 50 and 60 in a uniform manner to the polar housings 20, 30 and 40 and : therefore also to the switch box 10, so that a particularly high stability is achieved.

Figure 2 shows in more detail an embodiment for the configuration of the joint body 50 as well as for the configuration of the corresponding recess 22 in the side wall 21 of the polar housing 20 according to figure 1. It is observed that the side wall 21 it has a notch segment 23, through which the side wall 21 forms a guiding rail 24, in which the connecting body 50 can slide along the direction of the arrow P.

In order to provide a guide with a positive engagement in the guide rail 24, the external surface segment 51 of the connecting body 50 is also provided with a notch, which is complementary to the notch segment 23 and therefore to the shape of the rail 24. of guided. The configuration of the outer surface segment 51 may correspond, for example, to the configuration of the external surface segment 52, with which the connecting body 50 can be hooked in the second recess 32 (see FIG. 1) of the side wall 31 of the housing 30 polar.

Figure 2 further shows a screw 100, which is guided through a through hole 54 of the connecting body 50. With the screw 100 the lower case part 11 shown in Fig. 1 can be screwed with an upper case part not shown in Fig. 1, of the commutator case 10.

The . Figure 3 shows the function of the screw 100 in more detail. The lower housing part 11 of the switch housing 10 as well as an upper housing part 12 located thereon, of the switch housing is recognized. The two box parts 11 and 12 are screwed together by means of the screw 100. It can be recognized in FIG. 3 that the screw 100 is guided through the through hole 54 in the connecting body 50 and that it joins firmly the two parts 11 and 12 of box with each other.

However, the function of the screw 100 is not limited to just joining the two box parts 11 and 12 together. Rather, the function of the screw 100 is also to determine the position of the connecting body 50 with respect to the switch housing 10, whereby together the location of the two polar housings 20 and 30 within the housing 10 of switch; because the connecting body 50 joins the two polar housings 20 and 30 with shape-to-form engagement with each other, as explained above.

Figure 4 shows the arrangement of the two polar housings 20 and 30 in the switch box 10 in a top view. The connecting body 50, which joins the two polar housings 20 and 30 with form-fitting together and which provides a through hole for guiding the screw 100 therethrough, can be recognized.

In addition, in FIG. 4, two positioning elements 200 and 210 can be recognized, which are configured in a housing 230 of a thermomagnetic activation device 240.

The function of the two positioning elements 200 and 210 is to determine the location of the two polar housings 20 and 30 with respect to each other. In case of a high mechanical load, for example in the case of a short circuit, the mechanical force that is produced will be distributed starting from the affected polar housing to the adjacent polar housings, so that a concentration of spatial forces - altogether dangerous for the electric switch in a few Space segments of the switch.

Figure 5 again shows the configuration of the side wall 21 of the polar housing 20 in another view without the corresponding connecting bodies. It can be recognized that in the side wall 21 of the polar housing 20 two recesses are provided for inserting connecting bodies, namely the aforementioned recess 22 in relation to FIG. 2 as well as an additional recess, which in FIG. 5 is characterized by the number reference 27. The two recesses 22 and 27 in each case allow the insertion of a connecting body, as already explained in relation to figures 1 to 5, especially figures 1 and 2.

The distance between the two recesses 22 and 27 is as large as possible to enable optimum force transmission between adjacent polar housings. Preferably the recess 22 is in the region of a front end 20a of the pole housing 20 and the recess 27 in the region of a rear end 20b of the pole housing 20.

Figure 6 shows an exemplary embodiment for the design of the box bottom 30 of the lower box part 11. A reinforcing rib 310 can be recognized, the longitudinal axis of which is oriented perpendicular to the side walls of the pole housings. Figure 6 further shows a further reinforcing rib 320, which is oriented parallel to the side walls of the pole housings and which also contributes to increasing the mechanical stability of the switch housing 10.

Although the invention has been illustrated and described in detail by preferred embodiments, the invention is not limited by the disclosed examples and from these the skilled person can deduce other variations without abandoning the scope of protection of the invention.

List of reference numbers 10 switch box 11 part of box 12 part of box 20 polar housing 20th previous end 20b rear end 21 side wall 22 recess 23 notch segment 24 guide rail 27 recess 30 polar housing 31 side wall 32 recess 40 polar housing 41 side wall 50 union body 51 outer surface segment 52 external surface segment 54 through hole 60 union body 70 channel 100 screw 200 placement element 210 positioning element 230 box 240 thermomagnetic activation device 300 housing bottom 310 reinforcement nerve 320 reinforcement nerve P direction of the arrow

Claims

NOVELTY OF THE INVENTION The invention having been described as an antecedent, the content of the following is claimed as property: ' CLAIMS

1. Multipole electrical switch with a switch box (10) and in each case a polar housing (20, 30, 40) for each electrical pole of the switch, each housing (20, 30, 40) having polar electrical contact elements in each case to switch the respective electric pole and at least two of the polar housings (20, 30) with their adjacent lateral walls (21, 31) being located side by side, characterized in that the side wall (21) of one of the at least two pole housings (20) has a first recess (22) and. the lateral wall (31) of the polar housing (30) adjacent a second recess (32), - the two recesses (22, 32) oppose each other at least by segments and form a channel (70), whose longitudinal direction extends parallel to the two adjacent side walls (21, 31), and - a connecting body (50) is inserted in the channel (70), which by means of a positively-shaped connection between a lateral wall (21) and the connecting body (50) and by means of a connection with a positive connection between the adjacent side wall (31) and the joint body (50) together establishes a positive engagement between the two polar housings (20, 30) located side by side.

2. Switch according to claim 1, characterized in that the first recess (22), the second recess (32) and the two external surfaces directed to the two recesses (22, 32) of the joint body (50) each have a notch .

3. Switch according to one of the preceding claims, characterized in that - the shape of the first recess (22) is complementary to the shape of the outer surface segment (51) associated with the first recess (22), of the joining body (50) and - the shape of the second recess (32) is complementary to the shape of the outer surface segment (52) associated with the second recess (32), of the joining body (50).

4. Switch according to one of the preceding claims, characterized in that the connecting body (50) has a through hole (54), which extends parallel to the two adjacent side walls (21, 31) and parallel to the longitudinal direction of the channel (70)

5. Switch according to claim 4, characterized in that a screw (100) is screwed through the through hole (54), which bolts two box parts (11, 12) of the switch box (10) together.

6. Switch according to claim 5, characterized in that - the switch box (10) has a lower box part (11), into which the polar housings (20, 30, 40) are inserted, and - in the lower box part (11) an upper box part (12) is disposed and screwed with the lower box part (11) by the screw (100) guided through the through hole (54).

7. Switch according to one of the preceding claims, characterized in that - the two adjacent pole housings (20, 30) are in each case connected to each other with a positive engagement by means of at least two connecting bodies and - the longitudinal direction is arranged parallel to the two connecting bodies.

8. Switch according to one of the preceding claims, characterized in that the side walls (21, 31) of the two adjacent pole housings (20, 30) are kept at a distance by the joining body (s) (50).

9. Switch according to one of the preceding claims, characterized in that at least one positioning element (200, 210), belonging to a thermomagnetic activation device (240), jointly determines at least the relative position between the two housings (20, 30) adjacent polar

10. Switch according to claim 9, characterized in that the at least one positioning element (200, 210) keeps the two adjacent polar housings (20, 30) at a distance.

11. Switch according to one of the preceding claims, characterized in that the lower box part (11), for example in the receiving area of at least one of the polar housings (20, 30, 40), has at least one rib (310, 320), which extends transversely or perpendicular to the lateral walls (21, 31) of the polar housing.

12. A method for mounting a multi-pole electric switch, in which a pole housing (20, 30, 40) is inserted in a switch box (10) for each electrical pole of the switch in each case in such a way that at least two of the Polar housings are located with their adjacent lateral walls (21, 31) side by side, characterized in that the side wall (21) of one of the at least two pole housings (20) has a first recess (22) and the side wall (31) of the pole housing (30) adjacent a second recess (32) and the two recesses ( 22, 32) are placed opposite each other at least by segments and a channel (70) is formed, whose longitudinal direction extends parallel to the two adjacent side walls (21, 31), and a connecting body (50) is inserted into the channel (70), with which a form-fit connection is established between a lateral wall (21) and the connecting body (50) and a positively fit connection between the adjacent side wall (31) and the connecting body (50) and thus a joint with a positive fit between the two polar housings (20, 30) located side by side.

13. Method according to claim 12, characterized in that the connecting body (50) has a hole. (54) through which, parallel to the two adjacent side walls (21, 31) and parallel to the longitudinal direction of the channel (70), a screw (100) is guided through the through hole (54) and with this screw two box parts (11, 12) of the switch housing (10) are screwed together.