RU2365004C2 - Plug-in overvoltage protection device - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: proposed invention serves to protect contact plates against overvoltage. Proposed device comprises a magazine with electric contact elements to be connected to the contact plate and to sectionalise appropriate current circuit. It comprises also grounding bus or terminal. Aforesaid magazine comprises detachable part and housing to accommodate protection elements, the detachable part interacting with the contact plate. Visible top part of the said magazine, when plugged in, feature accessible contact pins plugged in the contact plate. First overvoltage protection elements seat nearby and sideways the magazine pin contacts. There is a contact bow arranged between detachable part contact elements and first overvoltage protection elements.

EFFECT: interconnection or measurement without detaching overvoltage protection devices.

12 cl, 14 dwg

Description

Technical field

The present invention relates to a removable surge protection device on contact strips for connecting components and wires that do not require soldering, cutting or stripping insulation, in particular in the field of telecommunication technologies, as well as a technology for collecting, transmitting and processing data, which contains a store with electrical contact elements for making connections with the contact strip, as well as for sectioning the corresponding current circuit and incorporating surge protection elements into the corresponding the current circuit, and also contains a grounding bar or a clamp for grounding, and the store contains a removable part and a housing, where the housing serves as a receiving part for basing surge protection elements, and the removable part interacts with the contact strip in accordance with the restrictive part of the claims, presented in paragraph 1.

State of the art

The modern standard for contact systems in the field of long-distance communication systems is characterized by the so-called LSA-PLUS technology (registered mark of Krone GmbH), which provides very fast, clean and reliable connection of wires and components. “LSA” here means technology that does not require soldering, cutting and stripping insulation. In the case of LSA-PLUS technology, the contacts are essentially at an angle of 45 ° so that contacting is carried out under optimal conditions and the tensile stress of the cable is reduced.

For LSA-PLUS technology, connection strips, disconnect strips, ground strips, and similar contact strips are previously known. Disconnecting strips allow to achieve sectioning due to a simple plug-in connector, providing the ability to connect or change the direction of the wires. In the case of connecting contact strips, the connection can be made using a simple plug-in connector. In the case of grounding strips, also referred to as grounding strips, the application aims to ensure that various components or also wires can be reliably brought to the ground potential required by the surge protection system, which can be connected via plug connectors so that in order to divert an appropriate amount of energy to the ground and prevent the destruction of connected communication systems.

Product Information by Phoenix Contact GmbH & Co. KG, Blomberg, regarding the removable surge protection system on the LSA-PLUS strips for the COMTRAB arrester, shows a surge protection plug for one to ten pairs of wires or two to twenty single wires, respectively.

As a typical application, they refer to a cross telephone installation with LSA-PLUS disconnect strips or connecting mounting strips. The COMTRAB surge protection magazine can be combined with a wide variety of plug-in connectors with protective contacts. The store itself has a receiving capacity for up to ten plugs for surge protection, and the protection circuit consists of a combination of reversible current protection components and powerful gas arresters with fail-safe contact.

By installing surge protection plugs in the LSA-PLUS disconnecting strips or in the connecting mounting strip, the protection circuit is partitioned and simultaneously connected to the current circuit.

In the case of a COMTRAB device, the connection to the potential equalization circuit is made using the ground bus integrated in the magazine.

A disadvantage of the Phoenix COMTRAB quick disconnect surge protection system is that when a plug with protective contacts is inserted into the LSA-PLUS connection strip, the latter becomes inaccessible for cross-linking, disconnection and measurement purposes. If it is necessary to solve the measurement tasks, the corresponding surge protection element or the surge protection plug, or even the entire surge protection magazine, must be removed from the LSA-PLUS bracket.

As for other embodiments of connection strips for telecommunications equipment with an integrated grounding element for forming an electrically conductive connection comprising an overvoltage protection unit and / or a shielding unit, DE 20000506 U1 is hereby referred to, for example.

Regarding the mounting of the contact strip to the mounting frame, attention should be paid to DE 19881273 C2, and with respect to the embodiment of the contact strip with plug contacts for mounting printed circuit boards, to EP 1286420 A2.

The prior art devices for surge protection of various designs. On the one hand, there are surge protection shops for basing gas arresters. On the other hand, surge protection devices are known in advance that comprise combinations of low sensitivity protection elements and high sensitivity protection elements. These devices are made in the form of structures for the installation of a pair of wires, up to the installation of ten pair of wires, in accordance with the previous explanation.

In relation to the state of the art in the field of surge protection stores, mention should be made, for example, of patent documents PCT / EP99 / 02621, DE 19917824 A1 and DE 19900759 A1.

Surge protection devices in combination of low-sensitivity and highly sensitive protection elements, including in the form of a detachable connection, are known from patent document DE 10007173 A1, and with respect to the internal structure of the surge protection device for paired cores - from EP 0797379 B1.

The connection to the ground of surge protection devices for paired cores through group grounding, which covers all surge protection devices of the contact strip, shows EP 1290760 B1.

In relation to the aforementioned prior art, it remains to state that, on the one hand, LSA-PLUS technology is very widespread, and that, on the other hand, removable surge protection modules for such strips are previously known, namely in the form of plugs for surge protection that are based in the store.

However, when installing an overvoltage protection system using a known technology, the usually available access to the contacts of the contact strip is terminated.

Surge protection devices currently available on the market are either in the form of surge protection stores for gas dischargers, or they contain low-sensitivity and highly sensitive protection elements, as well as the necessary decoupling resistance, combined into one single device.

The combination of surge protection stores with a surge protection device that has highly sensitive protection elements, from the electrical as well as from the mechanical point of view, is not provided in accordance with the prior art, and is also completely impossible without structural changes.

Disclosure of invention

Therefore, based on the foregoing, the objective of the invention is to provide an improved removable surge protection device designed for contact strips for connecting components and wires that do not require soldering, cutting and stripping insulation, in particular in the field of telecommunication and collection, transmission and data processing, moreover, the surge protection device, when installed in or for contact strips, must ensure that the contacts there are not were employed in order to marshalling or measurement were possible, as before, without having to dismantle the overvoltage protection elements or protection against overvoltages store.

The objective of the invention is solved by means of a removable surge protection device on the contact strips for connecting components and wires that do not require soldering, cutting and stripping insulation, in accordance with the combination of features according to claim 1, wherein the dependent claims contain at least reasonable options implementation and improvement.

In accordance with this, the main idea of the invention is that in the inserted state, the visible upper side of the magazine has directly accessible plug contacts, each of which corresponds to the appearance of the connector of the strip with plug contacts and is electrically connected to it in the aforementioned inserted position.

In addition, the first elements for surge protection are located next to the plug contacts of the store, and they are located on their side, preferably on both sides.

Between the corresponding contact elements of the removable part and the corresponding first elements for surge protection, an electrical connection is provided in the form of a contact yoke or in the form of a contact part.

In an improved embodiment of the invention, there is provided an additional plug-in part for surge protection (hereinafter referred to as the plug-in part), which has second protection elements, this plug-in part comprising an insertable jumper which, when mounted on the magazine from above, interacts with the free plug-in contacts there.

This plug portion preferably has a two-piece housing comprising a backplane mounting plate for a second element or surge protection elements.

At the same time, the free end of the backplane mounting plate protruding from the housing can form a plug-in jumper to minimize the total number of parts.

In addition, an earthing yoke, preferably made of a metal shaped part, is provided in the plug part.

The housing of the plug part for surge protection has an opening oriented in the direction of the plug-in jumper so as to enable electrical contact with the grounding yoke.

In turn, the grounding yoke is made with the possibility of contacting with the grounding bus through a connecting grounding device.

In accordance with the invention, there is an intermediate frame adapted to be mounted on and fixed onto the magazine, the intermediate frame being used to base and fix a plurality of plug parts. In this case, the intermediate frame can be mounted first, and then the plug-in parts are inserted, or an embodiment is possible in which the intermediate frame can slide over these plug-in parts already inserted.

A connecting grounding device or, accordingly, a plurality of connecting grounding devices are located inside the intermediate frame and are fixed there. These grounding connecting devices can also be made in the form of a metal part obtained flexible in the stamp.

In a preferred embodiment and improvement of the invention, the first overvoltage protection elements are made in the form of two- or three-electrode gas arresters, each of which is electrically connected through clamping or spring contacts and fixed mechanically.

The case of the store is designed in such a way that gas arresters are easily accessible from the side and / or top for installation and control purposes.

The second overvoltage protection elements in the plug part comprise a protection circuit attached to the first overvoltage protection elements and consisting of a highly sensitive protection element and decoupling resistances.

In a preferred embodiment of the invention, the plug parts can be plugged directly onto the LSA connector block, without the need for an advanced magazine with additional, directly accessible plug contacts. This ensures the universal applicability of the plug parts as a modular component of the entire surge protection system.

In general, the improved surge protection store is designed in such a way that a contact device is formed on its upper side containing pairs of contacts that, in their design, correspond to the appearance of the connector of the LSA-PLUS contact strip. This contact device of the voltage protection device thus constructed according to the LSA-PLUS standard is suitable for plug contacts which, for example, are used in cross-connection cords or other accessories of the LSA-PLUS system.

In order to achieve a central arrangement of these pairs of contacts, as is common in LSA-PLUS contact strips, the first surge protection elements, preferably gas arresters, can be located on both sides of the contacts. The corresponding receiving sections of the store for surge protection make it possible to base the aforementioned three-electrode gas dischargers, as well as two-electrode dischargers.

The proposed surge protection store can be used for several paired cores in an amount of up to ten pieces, one of which is inserted into each of them.

The plug-in connection between the surge protection magazine and the plug-in part, as mentioned above, is made in such a way that it is compatible with LSA-PLUS clamping strips. Accordingly, the contacts located on the upper side are designed so that the installation of LSA-PLUS plug systems is possible immediately.

Thanks to plug-in parts equipped with highly sensitive protection elements, in combination with a universal magazine for surge protection, the user can create surge protection that is optimal for a particular installation, and the plug-in parts are designed to be retrofitted in such a way as to ensure easy adaptation to possible changes in the installation.

Since the contacts on the upper side of the surge protector in accordance with the invention function as the contacts of the LSA-PLUS clamping plate, all maintenance work, such as disconnecting, measuring and cross-linking, can also be carried out with the surge protector inserted and during the operation of the surge protection elements located therein.

In accordance with the invention, the contacting of the plug parts with the “ground” can be carried out through the magazine for surge protection in the direction of the mounting tray.

The invention is explained below on the example of implementation, as well as using the drawings,

where in Fig.1 is a view in section of a store according to the invention with an intermediate frame located on top of it, as well as a plug part for surge protection, shown in the upper part of the drawing;

in Fig.2 is a horizontal projection of the device according to Fig.1 with the central arrangement of freely accessible plug contacts and, respectively, adjacent receiving sockets for basing surge protection elements shown here;

figure 3 - store for surge protection with inserted side grounding yoke, top view with the housing open;

figure 4 is a General view, as well as a detailed representation of the parts obtained flexible in the stamp and representing a PE-contact for low-sensitivity protection elements;

figure 5 is a possible embodiment of the grounding yoke in the form in which it can be used in the plug part for surge protection as a part obtained flexible in the stamp for PE-contact;

6 is a detail obtained flexible in the stamp as a PE-strip for the side of the connector in the form in which it can be used in the intermediate space;

in Fig.7 - various representations of the connector pads with spring sockets as contacts for low-sensitivity protection elements as the first overvoltage protection elements for installation inside the store, and from the images it is clear that these contacts serve both for electrical and mechanical connection, and for fixing the overvoltage protection elements, while forming an additional freely accessible plug contact in the area of the U-shaped yoke;

on Fig - an embodiment similar to the variant according to Fig.7, but with longer yokes for low-sensitivity protection elements;

figure 9 is an image of the contacts for low-sensitivity protection elements, namely from the output side;

figure 10 is a perspective view of the lower part of the case of the store for basing low-sensitivity protection elements and the corresponding contacts and connecting parts;

in Fig.11 - the upper part of the store as a closing part of the housing with recesses for basing the contact elements shown in Fig.4, 6, as well as Fig.7-9;

12 is a perspective view of an intermediate frame for holding and accommodating a plurality of plug parts for surge protection;

Fig.13 is an exploded view of the plug part for surge protection with both half-shells, a grounding yoke and a backplane mounting panel, and

on Fig - image of the store without the upper part of the housing, but with all the contact elements for the base of the surge protection elements for low-sensitivity protection and with accessible plug contacts, which in appearance are made similar to the connector strips with plug contacts.

The implementation of the invention

In accordance with figure 1, the store 1 for surge protection is made in such a way that on its upper side there are accessible plug contacts 2. The contacts of the removable part 3 are electrically connected to this top accessible device with plug contacts. Thus, the contacts of the removable part 3 are not only connected, as in traditional stores for surge protection, with surge protection elements, for example with gas arresters, but at the same time a corresponding pair of contacts is formed, which in its design externally corresponds to the connector of a conventional LSA contact strip -PLUS.

Accordingly, the LSA-PLUS plug contacts are suitable for plug contacts 2 in the form in which they are used in jumper cords or other LSA-PLUS accessories.

Shop 1 serves to base the first overvoltage protection elements located on both sides of the plug contacts, for example, in the form of two or three electrode gas arresters.

The plug part 6 for surge protection has a backplane mounting plate 20, which serves to base the highly sensitive protection elements and decoupling resistors 7. The plug part 6 consists, as can be seen in Fig. 13, of two plastic half-cases in which the backplane mounting panel 20 and grounding yoke 21.

The housing 22 has an opening 23, oriented in the direction of the plug-in jumper, which can be made in the form of the end part of the backplane mounting plate 20, so as to provide electrical contact with the grounding bracket 21 located in the housing.

The grounding yoke 21 through the grounding connecting device 9 is in electrical contact with the PE-contact shown in Fig.4.

The intermediate frame 8 according to FIG. 1 and, respectively, FIG. 12 also consists of a die-cast or extruded plastic part and can serve to base, hold and fix several plug parts 6.

Highly sensitive protection elements and decoupling resistances in the plug part 6 are energetically matched with low-sensitive protection elements that act as the first overvoltage protection elements in such a way that it is possible to easily adapt to specific protection conditions.

In the plug parts 6 there are corresponding surge protection elements for each pair of conductors. Thus, on the overvoltage protection system, which is designed, for example, for ten pair cores, for example, ten plug parts 6 can be mounted.

FIG. 2 shows a top view of the magazine according to FIG. 1, namely with distinguishable basing zones 5, which serve for electrical contacting and mechanical holding of three-electrode gas arresters or two-electrode gas arresters.

Shop 1 for surge protection without a casing, but with a grounding yoke 11 is shown in figure 3.

The contacts shown in FIGS. 7 and 9 for the input side of the low-sensitivity protection elements in the form of parts obtained by being flexible in the die perform a dual function in such a way that, on the one hand, they can contact as the low-sensitivity first overvoltage protection elements and be fixed mechanically, and, on the other hand, additional plug contacts arise, freely accessible from above, namely due to the U-shaped reed parts.

The contact elements shown in FIGS. 4 and 6–9 can, as can be seen from FIG. 14, be inserted into the corresponding recesses and slots in the lower part of the magazine (FIG. 10) and fixed there so that the manufacture and installation of the device surge protection can be realized with low costs and high automation conditions.

Claims (12)

1. A removable device for surge protection of contact strips for connecting components and wires that do not require soldering, cutting or stripping insulation, in particular in the field of telecommunication technologies, as well as data collection, transmission and processing technologies, which contains a store with electrical contact elements for making connections with the contact strip, as well as for sectioning the corresponding current circuit and embedding overvoltage protection elements in the corresponding current circuit, and also contains a bus for a clamp or a grounding clip, wherein the magazine contains a removable part and a housing, where the housing serves as a receiving part for basing surge protection elements, and the removable part interacts with the contact strip, characterized in that the visible upper side of the magazine, being in the inserted state, has directly accessible plug contacts (2), each of which corresponds to the appearance of the connector strip with plug contacts and connected to it;
in addition, the first elements (4) for surge protection are located next to the plug contacts (2) of the store (1), and they are located on their side, and between the corresponding contact elements of the removable part (3) and the corresponding first elements (4) of protection from overvoltages an electrical connection is provided in the form of a contact yoke or in the form of a contact part. 2. A removable surge protection device according to claim 1, characterized in that a plug-in part (6) for surge protection is provided, which has second surge protection elements (7), this plug-in part (6) comprising an insert jumper (20) ), which, when mounted on a magazine (1) from above, interacts with the plug contacts (2) located there. 3. A removable surge protection device according to claim 2, characterized in that the plug part (6) has a housing made of two parts (22), which contains a backplane for the second element or elements (7) of surge protection, and free The end of the backplane mounting plate protruding from the housing forms an insert jumper (20). 4. A removable surge protection device according to claim 2 or 3, characterized in that a grounding yoke (21) is provided in the plug part (6). 5. A removable surge protection device according to claim 4, characterized in that the housing (22) has an opening (23) oriented in the direction of the plug-in jumper (20) so as to ensure electrical contact with the grounding yoke (21). 6. A removable surge protection device according to claim 5, characterized in that the grounding yoke (21) is made with the possibility of contacting the grounding bus through the grounding connecting device (9). 7. A removable surge protection device according to one of claims 1 to 3, 5, 6, characterized in that there is an intermediate frame (8) made with the possibility of mounting on the magazine (1) and fixing on it, and the intermediate frame (8 ) serves for basing, fixing and, accordingly, holding a plurality of plug parts (6). 8. A removable surge protection device according to claim 7, characterized in that the grounding connecting device (9) is held in the intermediate frame (8). 9. A removable surge protection device according to one of claims 1 to 3, 5, 6, characterized in that the first overvoltage protection elements (4) are made in the form of two or three electrode gas arresters, each of which is electrically connected and mechanically fixed by means of clamping or spring contacts, the case of the magazine being designed in such a way that gas arresters are accessible from the side and / or top for installation and control purposes. 10. A removable surge protection device according to one of claims 2, 3, 5, characterized in that the second surge protection elements (7) in the plug part (6) for surge protection contain a protection circuit assigned to the first protection elements (4 ) from overvoltage and consisting of a highly sensitive protection element and decoupling resistance. 11. A removable surge protection device according to claim 2 or 3, characterized in that the plug parts (6) are also made with the possibility of fitting directly onto the strip with plug contacts. 12. A removable surge protection device according to claim 4, characterized in that the plug parts (6) are also made with the possibility of fitting directly onto the strip with plug contacts.

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