JP2009541958A - Base for electrically and mechanically housing at least one lightning arrester of insertion type - 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 present invention comprises a base for electrically and mechanically housing at least one insertable lightning arrester, comprising a bottom or base unit on which a switch device for error status indication or remote notification is arranged A U-shaped housing, the housing having at least one notch for receiving at least one spring biased push pin operatively connected to the switch device; 2. The base part according to claim 1, wherein the push pin mechanically contacts a lightning arrester or a trigger member provided in the lightning arrester when the lightning arrester is inserted.

  A lightning arrester with a remote signal contact for reporting an error is already known from the German utility model DE 20 2004 006 227. According to this prior art, the operation of a potential-free mechanism is achieved by thermal monitoring of the inserted varistor or the spark gap of the main line, the actuation force being applied by the biasing spring and the slide or flexible plate Passed by.

  In the base of this conventional overvoltage protection device, this mechanical movement is transmitted by means of a drive pin and a rotatably mounted switch rocker to a microswitch having a potential-free switching contact at the output. Is done.

  A multi-pole lightning arrester for use in a low-voltage power supply system is known from DE 100 01 667 C1, where only one substantially U-shaped base is used for live and PE or ground potentials. Guiding means for detachably receiving a plug-in part having a connection terminal and having a varistor or a spark gap member is provided in the cover hood of the base part, and the part is electrically connected by the connection terminal. It is possible to touch

  In an embodiment in accordance with the teachings of DE 100 01 667 C1, a recess is provided in the base carrier of the base for accommodating a microswitch for a remote signal indicator.

  In addition, a longitudinally or horizontally extending slot is incorporated in the base carrier for remote signal display, and a continuous and flat switch rocker is disposed in the slot. A switch rocker is operatively connected to the microswitch described above. The base carrier has an opening in the area of each protective element to be inserted that extends laterally or vertically to provide access to the switch rocker, and a rocker drive component is inserted into each opening A vertically projecting rocker drive part cam engages the associated opening in the cover hood. A cam interacts with a release pin for monitoring the function of each protection element. The rocker drive member includes another cam directed to the switch rocker and an integral pin for receiving and guiding a compression coil spring supported against the switch rocker.

  The switch rocker and the rocker drive component allow the monitoring of the function of the inserted protection element with just one microswitch. Also, insertion control is possible.

  All the technical solutions described above are common in that they all require a drive rocker and the microswitch is actuated by a rotational movement. Due to the existing tolerances and the chain of tolerances caused by the individual members, it is difficult to adjust the end points of the microswitch and there is a risk of false release. In addition to tolerances, the necessary rotational movement is further accompanied by bearing clearance on the function of the fulcrum.

  Based on the above, the object of the present invention is therefore to provide a base part for electrically and mechanically housing at least one lightning arrester of insertion type, a U-shaped housing comprising a bottom part or a base unit, an error condition, And a further developed base unit with a switch device for remote display or remote notification.

  According to this purpose, actuation of the switching device is possible with a small relative movement, so that a simple transformation of the direction of movement prevents inevitable tolerances from adversely affecting the switching and actuation behavior of the switch. Guarantee. Furthermore, the entire unit necessary for operating the switch device is arranged in the base part, and the manufacturing cost of the insertion type lightning arrester or module can be reduced.

  The technical solution to the object of the invention is achieved by a base part for electrically and mechanically housing at least one lightning arrester of insertion type, the base part having a combination of features as defined in claim 1. . The dependent claims describe at least useful embodiments and advances.

  The base housing has at least one notch for receiving at least one spring biased push pin. The push pin can penetrate the notch and interact with the trigger member located on the underside of the lightning arrester or the underside of the lightning arrester at the free end of the pin.

  Thus, when a lightning arrester is inserted, the push pin mechanically contacts the lightning arrestor or the trigger member described above (which can be connected to or actuated by the thermal decoupling device).

  At least one spring biased push pin is movably guided to the bottom or gate of the base unit.

  A lower extension oriented perpendicular to the direction of movement of the push pin has an inclined surface that corresponds complementarily to the inclined surface of the slide. A slide is disposed on the bottom or base unit so that it can be displaced perpendicular to the movement of the push pin to convert the movement of the push pin into a displacement movement substantially perpendicular to the movement of the push pin; Thus, the slide can be moved from the first position to the second position for actuating the switch device.

  Furthermore, the slide is biased by the spring member in such a way that the inclined surface of the extension of the push pin and the inclined surface of the slide are disengaged from each other.

  In a preferred embodiment, the push pin can have two spaced apart extensions, each provided with an inclined surface, between which the biasing spring in the form of a compression coil spring is received. A pin for guiding is arranged.

  The bottom or base unit is provided with an elongate at least one chamber having a rectangular cross section for receiving push pin extensions and slides.

  In order to make the best use of the available configuration space or chamber volume, the slide can be provided with an angled leg having a profile, which profile can be a cam (in particular a switch cam or a switch device). To actuate the microswitch, it extends to the wedge surface.

  A switch device (especially a microswitch) is arranged in the expanded space of the aforementioned chamber in the bottom or base unit. Inside the chamber, a rail is arranged which is oriented parallel to the direction of movement of the slide. For this purpose, the slide is provided with a corresponding groove, which can be guided and displaced along the rail.

  A spring member can be inserted into the groove of the slide. This spring member is preferably constrained in the region of the groove. For this purpose, two bolts or pin parts arranged opposite to each other are provided, fixing a spring (in particular a compression coil spring).

  A plurality of spaced apart inclined surfaces can be formed on the slide so as to be operatively connected to a plurality of extensions of the corresponding push pin, and monitoring of the multi-pole lightning arresters housed in the respective base portions is possible. It becomes possible further.

  If the push pin is urged in the direction of the insertion type lightning arrester and the insertion procedure is carried out correctly, the urging spring is further accumulated and the slide is moved under the influence of its own spring member. 1 end position is reached.

  When the insertion type arrester is pulled out or when the trigger member is actuated, the corresponding push pin moves in the direction opposite to the direction of insertion by using the increased biasing force of the biasing spring. Under the action of the inclined surface, the slide reaches the second end position while accumulating the spring member of the slide.

  Thus, as far as the basic structure is concerned, the remote signal action in the base according to the invention preferably consists of two members, preferably formed of molded or pressed plastic parts, ie a push pin having at least a first inclined surface, and at least Only a slide having a second complementary shaped ramp is required. When both ramps are actively engaged and movement occurs, this movement is transmitted to the second member by the resulting wedge effect, but the direction of movement is changed as desired, i.e. It is converted from the vertical movement of the push pin to the longitudinal movement of the slide. In the slide, the microswitch or the push pin of the microswitch is manipulated by the slide wedge surface to transmit the required remote signal function.

  In the following, the invention will be described in more detail by means of embodiments with the aid of the drawings.

The perspective view of the module by which two lightning arresters are inserted in the base part is shown with the remote signal trigger apparatus arrange | positioned at the base part and the base part as a partial cutaway view. FIG. 1 shows a view similar to FIG. 1, except that the lightning arrester shown at the front of the drawing is pulled out partway from the base, so that the push pin of the remote signaling device is in the upper position to indicate an error function. Has reached. A side view of the lightning arrestor module is shown, with the lightning arrestor fully inserted and functioning correctly. FIG. 3 shows a view similar to FIG. 3, but the trigger member is activated and the push pin is released, indicating an abnormality of the inserted lightning arrester. FIG. 3 shows a view similar to FIG. 3, but the lightning arrestor has been withdrawn halfway, with the result that the remote signaling device has been activated. A top view of the bottom of the base or the base unit is shown with the housing cover cut away, and the slide and push pin shown in the normal state, ie, with the remote signal switch activated, can be seen. FIG. 7 shows a view similar to FIG. 6, but shows a state where the remote signal is not activated, that is, when the inserted lightning arrester is abnormal or when the lightning arrester is not inserted. Fig. 6 shows a perspective view of the bottom or base unit, with the push pin and slide operating the remote signal switch. FIG. 9 shows a view similar to FIG. 8, but with the remote signal not activated. FIG. 2 shows a detailed view of a configuration for issuing an error signal, with a remote signal switch activated. FIG. 11 shows a detailed view similar to FIG. 10, but with the remote signal not activated.

  For example, an embodiment of a lightning arrester, such as a multi-pole lightning arrester for use in a TN circuit with L and N input terminals on one side and PE and ground connections on the other side, is disposed on the base 21. Two insertion type lightning arresters 20 are included. The common base 21 is suitable for mounting on a top hat rail by designing the lower surface 22 accordingly (FIG. 1).

  The base portion is provided with a remote signal device for detecting or notifying an error state of the insertion type lightning arrester 20 when one or both of the lightning arresters 20 are not properly inserted. The corresponding remote signal contact can optionally be electrically connected via the connection terminal 23.

  Further, a known conductor terminal 24 is provided on the base portion 21.

  According to the diagram of FIG. 2, the front insertion type lightning arrester 20 has been pulled out, and as a result, the trigger pin 1 is no longer provided on the lower surface of the insertion type lightning arrester 20 or the lower surface of the insertion type lightning arrester. Not touching. Therefore, the height position of the push pin 1 is displaced upward, and the switch device 8 such as a micro switch can be operated.

  In the view according to FIG. 3, it can be seen in the partial cross section of the figure how the push pin 1 makes mechanical contact with the trigger member 25 of the lightning arrester 20. The trigger member 25 is connected to a thermal disconnection device (not shown) located inside the insertion type lightning arrester 20, and the position of the trigger member 25 changes when the thermal isolation device is activated.

  Such an error condition, i.e. the released push pin 1, is shown in the diagram of FIG.

  Similarly, the push pin 1 is also released when the lightning arrester 20 is pulled out from the base portion 21 (see FIG. 5).

  When the height position of the push pin 1 changes, the push pin 1 changes the position of the slide 7, and the deformed portion 13 provided on the slide 7 and having the wedge surface 14 operates the switch device. A switch-on or switch-off procedure can be realized.

  The function of the operation of the switch device 8 will be described again with reference to the perspective views of FIGS.

  FIG. 8 shows a state in which the push pin of the switch device 8 is in operation, that is, the push pin 1 is in the lowest position and the spring 10 is tensioned.

  In the state according to FIG. 9, the spring 10 is loosened and the push pin 1 has reached the upper position. Corresponding ramps (see FIGS. 10 and 11) convert the direction of movement (the vertical movement of the push pin) into a movement that displaces the slide 7.

  Details of the mechanical configuration for the conversion of the direction of movement and the transmission of the trigger movement are described below with reference to FIGS.

  A push pin 1 is guided to the bottom or the gate 2 of the base unit 3. A lower extension 4, which is oriented perpendicular to the direction of movement of the push pin 1, has an inclined surface 5. In the drawing, an inclined surface 5 is provided on each of two extending portions 4 that are positioned apart from each other.

  The inclined surface 5 corresponds to the inclined surface 6 of the slide 7. This slide 7 is adapted to the direction of movement of the push pin 1 in order to convert the movement of the push pin 1 into a displacement movement extending substantially perpendicular to the movement of the push pin 1 by means of a linear-wedge mechanism. It is arranged on the bottom or base unit 3 so that it can be displaced vertically.

  Thereby, the slide can be moved from the first position to the second position, and as a result, the switch device 8 can be operated.

  The slide 7 is biased by the spring member 9, i.e. biased in such a way that the inclined surfaces 5 and 6 are disengaged from each other.

  A pin is provided between the extensions 4 of each push pin 1 to guide and house the biasing spring 10.

  The bottom or base unit 3 is provided with a chamber 11 (for example, see FIG. 2) for accommodating the extension 4 of the push pin 1 and the slide 7.

  The slide 7 has an oblique leg 12 that extends to a profile 13 with a wedge surface 14 for operating the cam 15 of the switch device 8 (see FIG. 11).

  For example, as can be seen in FIGS. 8 and 9, the switch device 8 is located in the expanded space of the chamber 11 at the bottom or inside the base unit 3. Furthermore, a rail 16 extending in parallel with the moving direction of the slide is provided inside the chamber 11. The slide 7 has a groove 17 corresponding to the rail 16. Therefore, the slide is guided in its own groove and attached to the rail 16.

  A spring member 9 that functions to bias the slide 7 is located in the groove 17 of the slide 7. This spring member 9 is anchored in the region of the groove 17. For this purpose, two opposing bolts 18 are provided. Each of these bolts receives one end of a spring member 9 designed as a compression coil spring.

  A multipolar embodiment in which several inclined surfaces 6 are operatively connected to several extensions of the associated push pin, i.e. a plurality of lightning arresters are arranged at the corresponding insertion position of the base part Can be formed on the slide 7 for the purpose of monitoring.

  When the push pin 1 is urged by a spring in the direction of each insertion type lightning arrester 20 and the insertion movement is properly executed, the urging spring 10 is further accumulated, and the slide 7 becomes a spring member. The first end position is reached under the influence of 9.

  When the insertion type lightning arrester 20 is pulled out or when the trigger member 25 is actuated, the corresponding push pin uses the increased biasing force of the biasing spring 10 to reverse the direction of insertion. Exercise. Under the action of the inclined surfaces 5 and 6, the slide 7 reaches the second end position while accumulating the spring member 9 combined with the slide 7.

  The energy of the movement of the push pin is transmitted to the slide through a pair of inclined surfaces, and the slide changes its position in the chamber, so that each cam of each switch device can be actuated. .

  Overall, the above-described invention also allows multi-pole monitoring of lightning arresters arranged on the associated base in a structurally simple manner. This device is configured to be able to detect both that the lightning arrester is not inserted and that the lightning arrester is not inserted sufficiently, so that an abnormality can be detected by a trigger member located in the lightning arrester. It is configured.

DESCRIPTION OF SYMBOLS 1 Push pin 2 Gate 3 Bottom or base unit 4 Extension part 5, 6 Inclined surface 7 Slide 8 Switch apparatus 9 Spring member 10 Energizing spring 11 Chamber 12 Diagonal leg 13 Deformation part 14 Wedge surface 15 Cam 16 Rail 17 Groove 18 Bolt DESCRIPTION OF SYMBOLS 20 Insertion type lightning arrester 21 Base part 22 Bottom surface of base part 23 Connection terminal 24 Conductor terminal 25 Trigger member

Claims (11)

A base for electrical and mechanical housing of at least one lightning arrester of insertion type,
A U-shaped housing with a bottom or base unit on which a switch device for error status indication or remote notification is located;
The housing has at least one notch that houses at least one spring-biased push pin operatively connected to the switch device;
The push pin is a base part that mechanically contacts a lightning arrester or a trigger member provided in the lightning arrester when the lightning arrester is inserted;
The spring biased push pin (1) is movably guided to the bottom or the gate (2) of the base unit (3);
The lower extension (4) oriented perpendicular to the direction of movement of the push pin (1) has an inclined surface (5) corresponding to the inclined surface (6) of the slide (7);
For the slide to convert the movement of the push pin (1) into a displacement movement extending substantially perpendicular to the movement of the push pin (1), relative to the direction of movement of the push pin (1). Arranged on the bottom or base unit (3) so that it can be displaced vertically, thus moving the slide (7) from a first position to a second position for actuating the switch device (8) It is possible,
Base part, characterized in that the slide (7) is biased by a spring member (9) in such a way that the inclined surfaces (5; 6) are disengaged from each other.   The push pin (1) has two extended portions (4) that are spaced apart and each provided with an inclined surface (5), and a biasing spring is provided between the extended portions (4). The base part according to claim 1, wherein a pin for receiving and guiding is disposed.   2. A chamber (11) for receiving an extension (4) of the push pin (1) and the slide (7) in the bottom or base unit (3). Or the base part of 2.   The slide (7) is provided with an oblique leg (12) having a profile (13), the profile (13) being a wedge for actuating the cam (15) of the switch device (8). 4. Base part according to any one of claims 1 to 3, characterized in that it extends to the surface (14).   5. Base part according to claim 3 or 4, characterized in that the switch device (8) is arranged in an expanded space of the chamber (11) of the bottom part or base unit (3).   A rail (16) oriented parallel to the direction of movement of the slide (7) is disposed inside the chamber (11), and the slide (7) has a groove ( The base portion according to any one of claims 3 to 5, comprising 17).   The base part according to claim 6, characterized in that the spring member (9) is arranged in the groove (17) of the slide (7).   The spring member (9) is anchored in the region of the groove (17) and for this purpose is received by two bolt parts (18) arranged opposite to each other. The base part according to claim 7.   A plurality of inclined surfaces (6) are formed in the slide (7) so as to be operatively connected to a plurality of extensions (1; 4) of the corresponding push pin. Item 9. The base portion according to any one of Items 1 to 8.   The push pin (1) is urged by a spring in the direction of the insertion type lightning arrester, and when the insertion procedure is correctly executed, the urging spring (10) is further accumulated and the slide ( 7. Base part according to claim 2, characterized in that 7) reaches the first end position under the influence of its own spring member (9).   When the insertion type lightning arrester (20) is pulled out or when the trigger member (25) is activated, the corresponding push pin (1) uses the increased biasing force of the biasing spring (10). Accordingly, the slide (7) moves in the direction opposite to the insertion direction of the lightning arrester (20), and under the action of the inclined surface (5; 6), the slide member (9) of the slide The base part according to claim 10, wherein the base part reaches the second end position while storing energy.

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