JP2009544127A - Plug-in type surge protection combination device - Google Patents

Abstract

The invention relates to a pluggable device combination for protection against surges, comprising a socket-like U-shaped lower part for accommodating at least one plug-type module (14) accommodating a surge protection element, wherein latching means acting between the plug-type module (14) and the socket-like lower part are provided which comprise, on opposite end sides (3) of the plug-type module (14), latching tabs which are formed on a hinge joint (1) under pre-stress and each engage in an associated latching cutout on the plug-type module (14), wherein the latching connection can be released by pressure being applied to the hinge joint (1) on the end sides (3) of the plug-type module. According to the invention, the respective hinge joint (1) is located in the transition region between the upper side and the respective end side (3) of the plug-type module (14), wherein the hinge joint merges with an actuating face (5) pointing towards the socket-like lower part. Formed on the lower end of the actuating face (5) is a hook-shaped latching tab (6), whose latching face (7) encloses an angle of less than 90° with the actuating face (5). Finally, the U limbs of the lower part each have a hook-shaped, recessed latching cutout (8), which is designed to be substantially complementary to the latching tab.

Description

  The present invention comprises a U-shaped socket-like lower body for accommodating at least one insertion module containing a surge protection element, and the locking means acts between the insertion module and the socket-like lower body. The locking means includes locking protrusions formed on prestressed hinge joints disposed on both end faces of the plug-in module, and the locking protrusions are respectively provided on the U-shaped socket-like lower body. 2. The superordinate concept according to claim 1, wherein the engagement is engaged with a corresponding locking recess, and the engagement is released by a pressure acting on the hinge joint disposed on the both end faces of the insertion module. The present invention relates to a plug-in type surge safety combination device.

  Prior art surge safety devices are often configured as plug-in combination devices that include a lower body and a plug-in module.

  The lower body is provided with a connection terminal for forming a conductor contact, and is provided with the accommodating portion for the insertion module to be inserted. The lower body further comprises means for gripping one or more plug contacts of the plug module so that the desired mechanical and electrical contact of the plug module within the lower body as well as proper retention is provided.

  The plug-in module houses the original surge protection element such as a spark gap, a varistor, a gas suppressor and the like. The lower body is often formed as a U-shaped body, with the arms of the U-shaped body gripping the insertion module from the side and the insertion module resting on the arm connection bridge. Furthermore, the lower body has a receiving tool on its mounting side, which enables a so-called top hat rail mounting.

  The advantage of the functional separation between the lower body and the plug module as outlined above is that the plug module can be removed for inspection or maintenance work without having to open the connection terminals or shut down the device. There is in point that can.

  The removed plug-in module can then be inspected with a special inspector outside the electrical device and optionally replaced or reused.

  As for the prior art, for example, German Patent No. 36 39 533, German Registered Utility Model No. 295 19 313, German Patent No. 100 01 667 Specification and German Registered Utility Model No. 20 2004 006 227 Specification Please refer to the book.

  As a matter of construction of the plug-in contact device between the lower body and the plug-in module, the device is designed for surge currents of 10/350 μs and 8/20 μs of surge current flowing through it during lightning protection or short circuit currents of the power supply frequency It must be noted that it must be.

  In particular, in the case of a surge voltage / lightning current suppressor as required by the market, a very large surge current of up to 100 kA must be induced many times through the contact point with almost no wear or wear. Tests commensurate with this have been established in the product specifications for surge protection devices.

  Depending on the contact force between the contact pieces, the plug-in module can be removed without a tool or only with a tool. Unless supplementary measures are taken, there is a risk that the plug-in module will pop out of the lower body under the influence of the current force action during a surge current event, so unless a series of protective measures are taken, Normal overall function is not given.

  From WO 95/12905, it also comprises a U-shaped lower body for accommodating at least one insertion module containing a surge protection element, between the insertion module and the socket-like lower body. Solutions are known which are provided with locking means that act. Locking protrusions formed on the hinge joint are provided on both side end surfaces of the insertion module, and these locking protrusions engage with corresponding locking recesses provided in the insertion module, respectively. It can be released by pressure acting on both end faces of the plug-in module and thus acting on the hinge joint.

  The hinge joint of the known solution is located in the lower part of the plug-in module, and the pressing surface is slightly above the locking projections provided on the side faces of the module. In order to apply pressure to the locking projection or the pressure surface, it is necessary to provide a recess or recess in the region of the U-shaped lower body. The pressure surface of this prior art is very small and it is very disadvantageous and difficult to grip the plug-in module by the required depressions or recesses in the lower body. Due to the fact that the original hinge is located below the plug-in module, a very large pressure travel is required to release the complementary lock. Further, since the locking surface of the locking projection provided on the plug-in module and the bounce return surface provided on the lower main body extend in parallel, there is a possibility that the unexpected locking of the complementary locking may occur upon shaking or vibration. .

  For the above reasons, an object of the present invention is to include a U-shaped socket-like lower body for accommodating at least one insertion module containing a surge protection element, and the insertion module and the socket-like lower body. It is an object of the present invention to provide a plug-type surge safety combination device in which the structural surface of the locking means acting between them and the improvement of the operational surface are realized.

  The solution to the above-mentioned problem of the present invention is achieved by the feature combination of claim 1. The dependent claims describe at least preferred embodiments and developments.

  An insertion type surge protection combination device comprising a U-shaped socket-like lower body for accommodating at least one insertion module containing a surge protection element, wherein each hinge joint is connected to the upper surface of each insertion module and each It has a specially configured locking means located in the transition zone between the side end faces.

  Each of the hinge joints is continuous with the operation surface which is directed to the socket-like lower main body side and is much larger than the conventional technique.

  A hook-shaped locking projection is formed at the lower end of the operation surface, and the locking surface of the locking projection forms an included angle of 90 ° or less with the operation surface.

  Finally, each U-shaped leg portion of the lower main body has a locking recess formed in a complementary manner with the locking protrusion and undercut into a hook shape.

  Since the hinge joint having a rotation center point or a joint point is arranged in the upper region of the insertion module, the pressure necessary for releasing the engagement can be generated very easily when the side operation surface is operated. be able to. In addition, since the spread of the operation surface is very large, the disengaged insertion module can be easily removed upward from the U-shaped lower body.

  Furthermore, due to the structural arrangement of the hinges, as described above, only a slight pressure travel is required to release the complementary lock to extract the module.

  Since the locking surface of the insertion module and the spring return surface provided on the lower main body have surfaces extending obliquely in opposite directions, the lock surface and the spring return surface are mutually related. And thus complementary locking automatically occurs. In order to improve the operability at the time of extracting the insertion module, the surface of each operation surface has a pattern.

  Since the lower part of the insertion module has a conical tapered end face, the module can be easily inserted even under adverse mounting conditions.

  An inner surface of the U-shaped leg portion of the U-shaped socket-like lower body has a shape complementary to the conical end surface portion.

  The hinge joint has a thin-walled portion that can be formed as a groove on the inner surface of the joint to improve operability in the region of the joint point.

  The hook-shaped locking projection has a wedge-shaped sliding surface so that the insertion module can be easily fitted in a region where the complementary locking of the lower body occurs.

  In this case, the wedge angle of the sliding surface is equal to or less than the locking surface angle, that is, the included angle between the locking surface and the operation surface.

  In the lower body, the U-shaped leg portion provided with the locking recess and facing the insertion module side is further provided with a rounded corner to facilitate insertion of the module into the lower body. It is integrally molded.

  Even if the insertion module is inserted into the operation surface and is complementarily locked, it can be freely reached. It is not necessary to provide any recess or depression in the lower body.

It is a side view of the insertion module which cut | disconnected and showed the area | region of the operation surface and the latching protrusion. FIG. 5 is a detailed view of the hinge joint, the locking projection and the locking recess in a complementary locked state, ie, when the plug-in module is correctly and fully fitted in the lower body. It is a whole view of the insertion module of the state inserted completely in the lower main body and complementarily locked.

  In the following, the invention will be described in detail on the basis of examples and with reference to the drawings.

  The illustrated insertion module 14 comprises a housing, which houses a surge protection element such as a varistor. In the lower region, known plug contacts and guides or matching pins are formed.

  Both end surfaces 3 of the insertion module 14 have an operation surface 5, and the operation surface is continuous with the hinge joint 1. Each hinge joint is arranged in the region of the upper side 2 of the plug-in module 14.

  A hook-like locking projection 6 is provided at the lower end of the operation surface representing the extension of the hinge joint 1.

  The locking surface 7 of the locking protrusion 6 forms an included angle of preferably 90 ° or less with the operation surface.

  In order to improve operability, the operation surface 5 includes a surface pattern 9.

  In order to reduce the pressure that must be applied to the operating surface 5 to release the engagement, a groove is carved in the inner surface of the joint in the region of the hinge joint 1 as an intended thinning means.

  As can be seen from FIG. 2, when the insertion module 14 is correctly inserted, the hook-shaped locking projection 6 engages with the locking recess 8 of the lower body 4.

  In order to facilitate the engagement, the hook-shaped locking projection 6 has a wedge-shaped sliding surface 11. Similarly, a rounded corner 12 is formed in the region of the locking recess 8.

  When the insertion module 14 is inserted, the wedge-shaped sliding surface 11 contacts the surface of the rounded corner 12. As a result, the hook-shaped locking projection 6 is displaced to the left starting from the position corresponding to FIG. 2 under the load of the operation surface 5 and the hinge joint 1. Next, when reaching the locking recess 8, the hook-shaped locking projections bounce back in the opposite direction, and thus the complementary engagement between the opposing surfaces, that is, the locking surface 7 and the surface of the locking recess 8 facing it. Stop occurs.

  From the above description, the hinge joint 1 is prestressed and, for example, suitable for the plastic material of the housing member or the housing cap that includes the hinge joint 1, the locking surface 5 and the locking projection 6 as an integral element. It becomes clear that you are prestressed based on your choice.

  As can be seen from the drawing in FIG. 3, the plug-in module 14 has a tapered end face at its lower part, which allows easy fitting and reliable engagement with the complementary U-shaped lower body 4. Retention is achieved. From the drawing of FIG. 3, even when the insertion module 14 is inserted and complementarily locked, the respective operation surfaces 5 can be freely reached, so that the engagement is released by the pressure from the side. It can be clearly seen that the plug-in module 14 can be removed from the U-shaped socket-like lower body by applying a sufficient force in the same place.

DESCRIPTION OF SYMBOLS 1 Hinge joint 2 Plug module upper side surface 3 Plug module end surface 4 Socket-like lower main body 5 Operation surface 6 Hook-like latching protrusion 7 Locking surface 8 Locking depression 9 Pattern 10 Groove carved in joint inner surface 11 Wedge shape Sliding surface 12 Rounded portion 13 Tapered end surface portion 14 Insertion module

Claims (9)

Comprising a U-shaped socket-like lower body for accommodating at least one plug-in module containing a surge protection element;
Locking means acting between the insertion module and the socket-like lower body is provided, and the locking means includes locking protrusions formed on prestressed hinge joints disposed on both side end surfaces of the insertion module. Each of the locking projections engages with a corresponding locking recess provided in the plug-in module,
The engagement is a plug-type surge safety combination device configured to be released by a pressure acting on the hinge joint disposed on both side end surfaces of the plug-in module,
Each said hinge joint (1) is located in the transition area between the upper surface (2) of the said insertion module (14) and the end surface (3) of each said side, The said hinge joint (1) is the said Continuing on the operation surface (5) facing the socket-like lower body (4) side,
A hook-shaped locking projection (6) is formed at the lower end of the operating surface (5), and the locking surface (7) of the locking projection is at an angle of 90 ° or less between the operating surface (5). Form the
Each of the U-shaped leg portions of the lower body (4) has a locking recess (8) formed in a complementary manner with the locking protrusion (6) and undercut into a hook shape. Built-in surge safety combination device.   The plug-type surge safety combination device according to claim 1, wherein the surface of the operation surface (5) has a pattern (9).   The insertion type surge safety combination device according to claim 1 or 2, characterized in that the lower part of the insertion module (14) forms a conical tapered end face (13).   4. A plug-in surge according to claim 3, characterized in that the inner surface of the U-shaped leg of the U-shaped socket-like lower body (4) has a shape complementary to the conical end surface (13). Security combination equipment.   The said hinge joint (1) has a thin part formed as a groove | channel (10) in the said joint inner surface in order to improve operativity, The preceding any one of Claims 1-4 characterized by the above-mentioned. Plug-in type surge safety combination device.   The plug-type surge safety combination device according to any one of claims 1 to 5, wherein the hook-shaped locking projection (6) has a wedge-shaped sliding surface (11).   The plug-type surge safety combination device according to claim 6, wherein the wedge angle of the sliding surface (11) is equal to or less than the locking surface angle.   A rounded corner (12) is formed on the U-shaped leg portion of the lower body (4), which is provided with the locking recess (8) and faces the insertion module (14). The plug-type surge safety combination device according to any one of claims 1 to 7, characterized by the above.   9. The preceding one of claims 1 to 8, characterized in that the respective operating surfaces (5) can be reached freely even if they are inserted and complementarily locked. Plug-in type surge safety combination device.

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