EP1897192B1 - -base part for electrically and mechanically receiving at least one surge arrester which can be inserted in the base - Google Patents

Abstract

The invention relates to a base part (21) for electrically and mechanically receiving at least one surge arrester (20) that can be inserted in the base. Said base part comprises a U-shaped housing having a bottom or base unit (3) in which a switching device (8) for the display or remote indication of error conditions is arranged. The housing has at least one cutout section accommodating at least one spring-loaded push-pin (1) which is functionally connected to the switching device, said push-pin mechanically contacting the surge arrester or a trigger element present in the arrester when the surge arrester is inserted. The invention is characterized in that the spring-loaded push-pin is movably guided in a lock-in gate of the bottom or base unit, a lower projection (4) which is oriented perpendicular to the direction of travel of the push-pin having a sloping surface that corresponds with a sloping surface of a slide (7) which is arranged in the bottom or base unit (3) so as to be displaceable perpendicular to the direction of movement of the push-pin for converting a movement of the push-pin to a displacing movement that is substantially perpendicular thereto so that the slide can be transferred from a first position to a second position for actuating the switching device. The slide is loaded by a spring element in such a manner that the sloping surfaces non-positively engage with each other.

Description

The invention relates to a base part for the electrical and mechanical recording of at least one insertable into the base surge arrester, wherein the base part has a U-shaped housing having a bottom or base part, in which a switching device is arranged for displaying or remotely reporting error conditions, the Housing has at least one opening which receives at least one spring-loaded Taststößel which is in operative connection with the switching device, wherein the Taststößel passes with plugged surge arrester in mechanical contact with this or with a detonator located in the arrester, according to the preamble of claim 1.

From the German utility model DE 20 2004 006 227 The triggering of the potential-free mechanism is carried out in this doctrine by means of thermal monitoring varistors used or the trigger unit used network radio links in the corresponding plug-in parts, which forwarded via biased springs by means of slide or flexible board becomes.

In the base part of the known overvoltage protection device, this mechanical movement is transmitted by means of actuating plunger and a rotatably mounted rocker switch on a microswitch, which provides a potential-free changeover contact at its outputs.

From the DE 100 01 667 C1 is a multi-pole surge arrester for use in low-voltage power supply systems previously known, comprising a single, substantially U-shaped base with terminals in the body for the active lines and PE or ground potential, wherein in the cover of the base guide means for releasably receiving electrically with the Terminals contactable plug-in parts are provided with Varistor- or spark gap elements.

In an embodiment of the teaching DE 100 01 667 C1 is provided in the base support of the base part a recess for receiving a micro-button for a telecommunications display.

For the telecommunications display is still in the base support a longitudinal or horizontally extending slot and arranged in the slot a continuous planar rocker switch. The rocker switch is in operative connection with the aforementioned micro-probe. The base support comprises in the region of each protective element to be inserted a transversely or vertically extending opening with access to the rocker switch. In each case a rocker actuating part is inserted into the openings, the vertically projecting cam engages in an associated opening in the cover and interacts with a release pin for monitoring the function in the respective protective element. The rocker actuation parts have a rocker cam directed to further cams and a molded pin for leading receiving a helical compression spring, which is supported against the rocker switch.

With the aid of the rocker switch and the rocker actuators, the functions of the inserted protective elements can be monitored with a single micro-pushbutton, whereby assembly control is also possible.

The above-described solutions have in common that they each require a rocker switch, wherein a microswitch is actuated by a rotational movement. Due to existing tolerances and a forming tolerance chain, which results from the individual elements, the end point of the micro probe is problematic adjustable, so there is a risk of faulty triggering. In addition to the tolerances, the function-related bearing play of the axis of rotation also adds to the necessary rotational movements.

From the foregoing, it is therefore an object of the invention to provide a developed base for electrical and mechanical recording of at least one insertable into the base surge arrester, wherein the base part has a U-shaped housing with a bottom or base part and a switching device for display or remote message of error conditions.

According to the object, a triggering of the switching device should also be possible with slight relative movements, with unavoidable tolerances in any way having a disadvantageous effect on the switching and tripping behavior by simple movement-direction transformation. Furthermore, the entire unit required for actuating the switching device should be arranged in the base part, so that it is possible to reduce the costs for the production with respect to the pluggable overvoltage protection arresters or such modules.

The object of the invention is achieved by a base part for the electrical and mechanical absorption of at least one insertable into the base part surge arrester according to the feature combination according to claim 1, wherein the dependent claims represent at least expedient refinements and developments.

The housing of the base part has at least one opening in order to accommodate at least one spring-loaded feeler plunger. The Taststößel penetrates this breakthrough and can interact with its free ram end with the underside of the surge arrester or a tripping element located there.

When the surge arrester is plugged in, the push rod is therefore in mechanical contact with the surge arrester or the aforementioned triggering element, which in turn is connected to a thermal disconnecting device or can be actuated by it.

The at least one spring-loaded Taststößel is movably guided in a backdrop of the bottom or base part.

A lower, perpendicular to the direction of movement of the Taststößels extension has an inclined surface which corresponds to a complementary inclined surface of a slider.

The slider is arranged perpendicular to the movement of the Taststößels displaceable in the base or base part to transform a movement of the Taststößels in a substantially perpendicular thereto sliding movement, so that the slider is convertible from a first position to a second position for actuating the switching device.

Furthermore, the slide is biased by means of a spring element, that the inclined surfaces of the extension of the Taststößels and the slide are positively connected.

The Taststößel may in a preferred embodiment, two spaced extensions, which are each provided with an inclined surface, wherein between the extensions a pin for leading receiving a biasing spring in the form of a helical compression spring is befindlich.

In the bottom or base part at least one elongated, rectangular in cross-section chamber for receiving the extensions of the Taststößels and the slider is provided.

The slider may include an angled leg for maximum spatial utilization of the available space or the chamber volume, which has a shaped piece, which in turn merges into a wedge surface to a cam, in particular switching cam of the switching device or a Press micro button.

The switching device, in particular a micro-probe, is arranged in an extension space of the aforementioned chamber within the base or base part.

Within the chamber is a rail, oriented parallel to the direction of movement of the slider.

The slide has a groove corresponding thereto, so that the slide is guided along the rail displaced.

In the groove of the slider, a spring element can be used. This spring element is preferably arranged captive in the region of the groove, for which purpose there are two opposing bolts or pin parts which fix the spring, in particular a helical compression spring in turn.

On the slider, a plurality of spaced inclined surfaces can be formed in order to enter with a plurality of associated Taststößel extensions in a respective operative connection, so that the monitoring of multipolar arrester, which are received by the respective base part, is possible.

The one or more Taststößel are biased in the direction of the plug-in or plug-in surge, wherein with correct execution of the insertion process biased the biasing spring and the slider passes under the action of its spring element in a first end position.

When pulling the pluggable surge arrester or activated trigger element, the respective Taststößel moves using the increased biasing force of the biasing spring counter to the direction of insertion. Under the action of the inclined surfaces of the slider reaches a second end position, wherein a voltage of the slider-spring element takes place.

From the basic construction, therefore, the telecommunications operation in the base part according to the invention requires only two, preferably as a plastic injection or -pressteil running elements, namely the Taststößel with at least a first inclined surface and the slide with at least one second, complementary shaped inclined surface. If the two inclined surfaces are in positive engagement and a movement, this is transmitted under the resulting wedge effect on the second element, but with the desired reversal of the direction of movement, namely by moving the Taststößels up and down to a longitudinal sliding movement of the slider. On the slide a micro button or its plunger is operated on the local wedge surface to transmit the necessary telecommunications functions.

The invention will be explained in more detail below with reference to a Ausfühhrungsbeispiels and with the aid of figures.

Hereby show:

Fig. 1 a perspective view of a module, comprising two inserted surge arresters, which are located in the base part, with partially cutaway view in the base part and located there telecommunications triggering device;

Fig. 2 a representation similar to the one after Fig. 1 in which, however, the front surge arrester is partially pulled out of the base part, with the result that the plunger of the telecommunication direction comes to its upper position and an error function is indicated;

Fig. 3 a side view of an overvoltage protection module with fully inserted surge arrester and correct function;

Fig. 4 a representation analogous to that in Fig. 3 shown, but with activated trigger element and released Taststößel, representing a defect of the inserted surge arrester;

Fig. 5 a representation analogous to that after Fig. 3 , but with partially pulled surge arrester and appropriately activated telecommunications device;

Fig. 6 a plan view of the bottom or base part of the base part with cut away housing cover and recognizable slide and recognizable Taststößeln in the representation normal state, ie remote control switch actuated;

Fig. 7 a representation analogous to those according to Fig. 6 , but in the state of a canceled telecommunications operation, ie the defect or the absence of the inserted surge arrester;

Fig. 8 a perspective view of the bottom or base part with Taststößeln and slide in the state actuated telecommunications switch;

Fig. 9 a representation analogous to that after Fig. 8 but in the state of suspended telecommunications operation;

Fig. 10 a detailed representation of the construction of the error message in the state operated remote switch;

Fig. 11 a detailed representation analogous to those after Fig. 10 , but in the state of canceled telecommunications operation.

A surge arrester embodiment, eg multi-pole for use in a TN circuit with L and N input terminals on one side and PE and ground connection on the opposite side comprises two pluggable ones Surge arrester 20, which are located in a base part 21. This common base part 21 is suitable by appropriate design of its underside 22 for DIN rail mounting ( Fig. 1 ).

In the base part is a telecommunications device to detect or signal error conditions of the plug-in surge arrester 20 or when one or both surge arresters 20 have not been correctly inserted. A corresponding telecommunications contact is potential-free via a terminal 23 electrically contacted.

Furthermore, the base part 21 known per se conductor terminals 24 are present.

As shown Fig. 2 the front pluggable surge arrester 20 was pulled with the result that the Taststößel 1 is no longer in contact with the underside of the pluggable surge arrester 20 or a triggering element located there. As a result, the height position of the Taststößels 1 shifts upward and it is the switching device 8, for example, a micro-probe activated.

According to the illustration according to Fig. 3 can be seen in the local section section, as the Taststößel 1 is in mechanical contact with a triggering element 25 in the surge arrester 20. This triggering element 25 is connected to a plug-in surge arrester 20, not shown, thermal separation device in combination, the triggering element 25 then changes its position when the thermal separation device is activated.

The relevant error state, ie released Taststößel 1, the representation after Fig. 4 ,

Similarly, the Taststößel 1 is released when the surge arrester 20 is pulled out of the base part 21 (see Fig. 5 ).

The one or more Taststößel 1 cause in their change in altitude, a change in position of the slider 7, so that there is a fitting 13 with wedge surface 14 is capable of triggering the switching device respectively to realize a switching on or off.

This actuation function of the switching device 8 is again based on the perspective views of the Fig. 8 and 9 illustrated.

Fig. 8 shows the state of the operated button of the switching device 8, ie here are the Taststößel 1 in its lowest position under tension of the local springs 10th

In the state of Fig. 9 have relaxed the springs 10 and it get the Taststößel 1 in its upper position. Corresponding inclined surfaces (see Fig. 10 and 11 ) cause a reversal of the direction of movement (up and down movement of the Taststößel) in a sliding movement of the slider. 7

Details of the mechanical construction for reversing the direction of motion and for transmitting the release movement is based on the Fig. 10 and 11 explained as follows.

The Taststößel 1 are guided in a backdrop 2 of the bottom or base part 3.

A lower, perpendicular to the direction of movement of the Taststößels 1 extension 4 has an inclined surface 5, wherein in the figurative representations, two spaced extensions 4, each with an inclined surface 5 are present.

This slide surface 7 corresponds to an inclined surface 6 of the slider 7. This slide 7 is arranged perpendicular to the direction of movement of the Taststößels 1 slidably in the base or base part 3 to transform a movement of the Taststößels 1 in a substantially perpendicular thereto sliding movement according to a wedge thrust gear.

As a result, the slider is from a first position to a second position for corresponding actuation of the switching device 8 can be transferred.

The slide 7 is biased by means of a spring element 9, in such a way that the inclined surfaces 5 and 6 enter frictionally in connection.

Between the extensions 4 of the respective Taststößels 1 is a pin for leading receiving a biasing spring 10th

In the bottom or base part 3 is a chamber 11 (see, eg Fig. 2 ) for receiving the extensions 4 of the Taststößels 1 and the slider 7 is provided.

The slider 7 includes an angled leg 12, which merges into the fitting 13 with the local wedge surface 14 to actuate the cam 15 of the switching device 8 (see Fig. 11 ).

The switching device 8 is located, such as in the Fig. 8 and 9 can be seen, in an extension space of the chamber 11 within the bottom or base part. 3

Within the chamber 11, a rail 16 is also provided, which is parallel to the direction of movement of the slider. The slider 7 has a groove 16 corresponding to the rail 17. Thus, the slider is mounted leading with its groove with respect to the rail 16.

In the groove 17 of the slider 7, the spring element 9, which serves to bias the slider 7 sits.

This spring element 9 is arranged captive in the region of the groove 17, wherein two opposing bolts 18 are provided for this purpose.

These bolts each receive one end of the spring element 9 designed as a helical compression spring.

On the slide 7 a plurality of inclined surfaces 6 can be formed to occur with several associated Taststößel extensions in a respective operative connection, for the purpose of monitoring a multi-pole embodiment, in which a plurality of surge arresters are located at corresponding slots in a base part.

The one or more Taststößel 1 are spring-biased in the direction of the respective plug-in surge arrester 20, wherein the biasing spring 10 is stretched with correct execution of the insertion movement and the slider 7 passes under the action of its spring element 9 in a first end position.

When pulling the pluggable surge arrester 20 or activated trigger element 25, the respective Taststößel moves using the increased biasing force of the biasing spring 10 against the insertion direction. Under the action of the inclined surfaces 5 and 6, the slide 7 reaches a second end position, in which case a tension of the spring element 9, which is associated with the slide 7, takes place.

The kinetic energy of the Taststößels is summarized by the pairing of the inclined surfaces transmitted to the slide, which changes its position within the chamber, as a result of this process, the respective cam of the respective switching device can be actuated.

All in all, it is possible with the above-described invention to make in a structurally simple way, a multi-pole monitoring of surge arresters, which are located in an associated base part. The device is designed so that both unplugged or partially drawn surge arresters detected, but also a malfunction via a trigger element, which is located in the surge arrester, can be determined.

LIST OF REFERENCE NUMBERS

1 Taststößel

2 backdrop

3 base or base part

4 extension

5; 6 inclined surface

7 slides

8 switching device

9 spring element

10 biasing spring

11 chamber

12 angled leg

13 fitting

14 wedge surface

15 cams

16 rail

17 groove

18 bolts

20 plug-in surge arresters

21 base part

22 Bottom of the base

23 connection terminal

24 conductor terminal

25 triggering element

Claims (11)

1. Base part for electrically and mechanically receiving at least one surge arrester insertable into the base part, wherein the base part comprises a U-shaped housing with a bottom or base unit in which a switching device for the display or remote indication of error conditions is arranged, wherein further the housing has at least one cutout section receiving at least one spring-preloaded push-pin which is operatively connected to the switching device, wherein the push-pin is in mechanical contact with the surge arrester or with a trigger element provided in the arrester when the surge arrester is inserted,
   characterized in that
   the spring-preloaded push-pin (1) is movably guided in a gate (2) of the bottom or base unit (3), wherein a lower extension (4), which is oriented perpendicular to the direction of motion of the push-pin (1), has a sloping surface (5) that corresponds with a sloping surface (6) of a slide (7), the slide is arranged in the bottom or base unit (3) so as to be displaceable perpendicular to the direction of motion of the push-pin (1) for transforming a motion of the push-pin (1) into a displacing motion extending substantially perpendicular thereto, so that the slide (7) can be transferred from a first position into a second position for actuating the switching device (8), and that further the slide (7) is preloaded by a spring element (9) in such a manner that the sloping surfaces (5; 6) are non-positively engaged with each other.
2. Base part according to claim 1,
   characterized in that
   the push-pin (1) has two spaced-apart extensions (4) each provided with a sloping surface (5), wherein a pin is located between the extensions (4) to guidingly receive a preloading spring.
3. Base part according to claim 1 or 2,
   characterized in that
   in the bottom or base unit (3) a chamber (11) is provided to receive the extensions (4) of the push-pin (1) and the slide (7).
4. Base part according to one of the preceding claims,
   characterized in that
   the slide (7) comprises an angled leg (12) having a shaped part (13), which shaped part (13) extends into a wedge surface (14) so as to actuate a cam (15) of the switching device (8).
5. Base part according to claim 3 or 4,
   characterized in that
   the switching device (8) is arranged in an extended space of the chamber (11) within the bottom or base unit (3).
6. Base part according to one of claims 3 to 5,
   characterized in that
   a rail (16) is located inside the chamber (11), which is oriented parallel to the direction of motion of the slide (7), the slide (7) comprising a groove (17) corresponding thereto.
7. Base part according to claim 6,
   characterized in that
   the spring element (9) is arranged in the groove (17) of the slide (7).
8. Base part according to claim 7,
   characterized in that
   the spring element (9) is captively arranged in the region of the groove (17) and is, to this end, received by two oppositely arranged bolt parts (18).
9. Base part according to one of the preceding claims,
   characterized in that
   a plurality of sloping surfaces (6) is formed on the slide (7), so as to be operatively connected to several associated push-pin extensions (1; 4).
10. Base part according to claim 2,
    characterized in that
    the push-pin(s) (1) is/are spring-preloaded in the direction of the insertable surge arrester, wherein, if the insertion procedure is performed correctly, the preloading spring (10) is loaded further and the slide (7) reaches a first end position under the influence of its spring element (9).
11. Base part according to claim 10,
    characterized in that
    when pulling out the insertable surge arrester (20), or when the trigger element (25) is activated, the respective push-pin (1) is moved oppositely to the insertion direction of the surge arrester (20) by using the increased preloading force of the preloading spring (10) and, under the influence of the sloping surfaces (5; 6), the slide (7) reaches a second end position, with the spring element (9) of the slide being loaded.

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