AT517768A2 - Bypass device for meter connection terminal - Google Patents

Abstract

Bridging device (1) for a counter connection terminal (4, 5) for bridging a current meter connected to the counter connection terminal (4, 5), wherein a number of electrically conductive terminal blocks (4) are arranged in the housing (3) of the counter connection terminal (4, 5) which are contactable with the bridging contacts of the lockup device (1) when the lockup device is mounted on the housing (3) of the counterconnector terminal (4, 5), with a manually operable lock (6, 7) or jamming between the lockup device (1) and the housing (3) of the counter connection terminal (4, 5) is present.

Description

Bridging device for counter terminal

The invention relates to a bridging device for a meter terminal according to the preamble of claim 1. Such a bridging device has become known, for example, with the subject matter of DE 102 16 913 A1. The bridging device shown there consists essentially of a self-contained bracket, on whose underside electrically conductive contacts are arranged, which are designed as blade contacts. In the case of application of the bridging device, this is plugged onto the top of a meter connection terminal and the blade contacts reach through slots in the cover of the terminal and contact the arranged in the interior of the housing spring contact strips.

The purpose of the lock-up device is to allow replacement of an energy meter connected to the terminal block of the meter connection terminal without a power interruption occurring.

For this purpose, the bridging device bridges with its bridging contacts the connected counter by the blade contacts of the lock-up device produce a conductive connection with the terminals and thereby cause a bridging of the connected counter.

A similar subject is apparent from DE 22 56 373 B2, in which a bridging device shows U-shaped staples at the bottom, which bridge the bridging distance between the Zählzu- and the meter outlet.

In both documents there is the disadvantage that the lock-up device is placed only loosely on the terminal block and it must be ensured that the arranged on the underside of the lock device blade contacts engage in the terminal-side spring contacts.

The assignment of layers is therefore only by inserting the bridging contacts the terminal-side contacts. Further holding forces do not exist. In particular, a position secured position is missing.

It may even happen that the lock-up device is tilted or not fully seated on the lid of the terminal housing.

An even greater danger is that because of the unsafe position assurance of the bridging device - because the holding force is given solely by the contact of the bridging contacts - there is a risk that vibrations are placed on the housing of the terminal during disassembly of the energy meter, creating the risk in that the electrical contacts of the bridging device are disengaged from the connection contacts in the housing and an uncontrolled interruption of the power supply occurs.

The result is that an arc can occur and the installer, who is busy with the dismantling of the energy meter, can be injured by the resulting arc.

With the subject matter of DE 10 2014 101 067 B3 bridging device for a meter terminal for bridging a meter connected to the meter terminal is known, wherein in the housing of the meter terminal a number of electrically conductive terminal blocks are arranged, which are contacted with the bridging contacts of the bridging device, if the Bridging device is mounted on the housing of the meter connection terminal, wherein a lock or jamming between the lock-up device and the housing of the meter connection terminal is arranged on both sides on the side surfaces of the lock-up device and cooperates with latching projections on the housing and / or on the cover.

The document describes a so-called

Locking prevention arrangement, which

Electricity meter connection systems with bridging plug is necessary in case when plug-in terminals are used, the jumper plug can be snapped onto the terminal block only when no electricity meter is plugged. The insertion tab located on the electricity meter prevents latching of the locking element on the bridging plug as soon as the electricity meter is plugged onto the terminal block. A manual release is not provided in this document. The locking device works with two spring-loaded swiveling pawls that do not allow manual operation. Locking takes place automatically when plugging the jumper plug into the terminal block when no electricity meter is plugged in. The unlocking is done by hand.

Disadvantage of this arrangement is the arrangement of compression springs, which bias the spring-loaded pivotable locking pawls. Such compression springs can be lost or broken as separate parts. In case of failure, the lock is unusable.

Another disadvantage is the poor accessibility of the locking pawls whose free pivotable ends can be found only by sensing a lateral recess on the terminal block.

The invention is therefore based on the DE 10 2014 101 067 B3 the object of developing a lock-up device for meter connection terminals of the type mentioned so that the lock-up device can be handled easier and more reliable.

To solve the problem, the invention is characterized by the technical teaching of claim 1.

Feature of the invention is that a hand-operated latching and unlatching between the lock-up device and the housing of the

Terminal is given and the locking device is formed in each case a latch, which consists of a one- or two-armed lever, the resilient pivot bearing is designed as a flexible connecting part on the plastic material of the lock-up device.

This has the advantage that the considered as disadvantageous pressure springs for producing the spring preload can be omitted on the pivot bearings of the latches and a given by the bendable plastic material of the connecting part spring bias acts both in the opening direction and in the closing direction of the locking pawls.

Another advantage is that the latches are material integral with the plastic material of the bridging plug and thus the arrangement of separate latches can be omitted with associated Schwenklagem.

In a first, preferred embodiment, it may be provided that the latching device is arranged in each case on the two opposite narrow sides of the approximately bow-shaped bridging device and the latching projections on the side surfaces of the housing, for. B. are provided on the lid or on a peripheral or partially existing edge of the housing. Thus, the locking device is easily accessible and can be both locked and unlocked by hand.

In a kinematic reversal to the above solution, it is provided that the latching device is arranged on the side surfaces of the housing and the latching projections are respectively arranged on the narrow side of the bow-shaped bridging device.

In a preferred embodiment, it is provided that the locking device is designed as a two-armed lever, which means that a lever part serves as a handle and the pivot bearing of the lever is formed as a bendable part on the side surface of the lock-up device and the other part at its free end the Latch hook carries.

Instead of a two-armed latching device, it may also be provided in another embodiment, this latching device one-armed form.

In a preferred embodiment, it is provided that the bridging device consists of an approximately mirror-symmetrical part, which consists of a transverse part, on which mutually mirror-symmetrical arcuate sheet parts are integrally formed on both sides.

The purpose of this measure is that the lock-up device can be grasped for operation with the terminal only with two hands, with one hand, the locking device on one side and the other hand actuates the locking device on the opposite side, to avoid that the Bridging device is operated with only one hand, which can lead to incorrect operation. It is therefore a deadman operation, because it is ensured by the bent-out parts of the bow on the bridging device that only one locking device can be operated with one finger at a time by the fingers.

For this purpose, the arch parts each have inner abutment surfaces, which are formed approximately in the same radius of curvature, as the abutment surface associated with this, opposite stop surface on a lever part, which is designed as a handle of the latching device.

Accordingly, the locking device is formed in a preferred embodiment as a two-armed lever, of which a lever is the handle, and the pivot bearing of this lever is molded as a bending part in the form of a bendable pin-shaped connecting part to the plastic material of the lock-up device.

Thus, the one lever part continues in training as a handle on the pivot bearing away as the lower hook part, and at the free lower end of this hook part of the inwardly directed latching hook is arranged.

In a preferred embodiment, it is provided that these latching hooks engage on a lateral latching edge of the housing.

In another embodiment, it may be provided that, instead of a latching on the housing edge, a latching takes place on the underside of the lid of the housing.

In another, modified embodiment, it can also be provided that the bridging device is not formed with two mutually opposing parts of the sheet, but forms a self-contained bow member defining a central inner and self-contained recess, which is for the penetration of one hand is determined.

Important in all embodiments is that the lock-up device allows only a two-handed operation, because the respective locking device is formed in each case on opposite sides symmetrical to each other and can be operated only with one hand.

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the abstract, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are novel individually or in combination with respect to the prior art.

As far as individual items are referred to as "essential to the invention" or "important", this does not mean that these items necessarily have to form the subject of an independent claim. This is determined solely by the current version of the independent claim.

In the following, the invention will be explained in more detail with reference to drawings illustrating several execution paths. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

Show it:

Figure 1: exploded view of the lock-up device in connection with the parts of the terminal in the non-contacted state

Figure 2: the same view as Figure 1 in the contacted state

Figure 3: the side view of the device according to Figures 1 and 2 from one side

Figure 4: the view from the front

Figure 5: compared to Figure 3 rotated by 180 ° side view

Figure 6: the top view of the top of the lock-up device

Figure 7: the top view of the bottom side of the housing

FIG. 8 shows an embodiment of a bridging device modified from FIGS. 1 to 7

FIG. 9 shows the latching principle of the bridging device according to FIG

Embodiment of Figures 1 to 8

FIG. 10 shows an example of a modification compared to FIG

locking device

In the figures 1 to 7, the bridging device 1 consists of an electrically insulating plastic, in the bottom surface of the associated bridging contacts 15 are embedded in the form of embedding 29.

It is important that the bridging contacts 15 do not form a current conducting connection with each other, as is known in the art. In these known arrangements there is a current-conducting connection between the individual bridging contacts 15. This has the disadvantage that in the case of bridging high current flows are given by the bridging device 1, which are connected to an undesired heating of the bridging device 1. In this case, unwanted increased power losses arise.

In the singular and insulating embedding of the bridging contacts 15 according to the invention in the form of embedding 29 in the plastic material of the bridging device 1, there are no current flows between the bridging contacts 15 and thus a substantial increase in operating safety and a reduction of current flows are associated.

In the embodiment shown, the bridging contacts 15 consist of blade contacts, which are formed in a single embodiment of a solid material and have front tips.

In other embodiments, other forms of bridging contacts 15 may be used.

The bridging device 1 consists essentially of a central part 13, which is elongate and at its two opposite ends in each case outwardly directed arch parts 14 are formed.

Each arch part 14 forms on its underside a stop surface 26, which is arranged in the region of an arc surface 27.

Respectively on the opposite narrow sides of the bridging device 1, the inventive locking device 7 is formed. After the locking devices 7 are formed the same on both sides, the description of a single locking device 7 is sufficient.

In another embodiment, it may be provided that the locking devices 7 according to the invention are arranged on the front and back of the lock-up device.

Each locking device 7 consists in the illustrated embodiment of a connecting part 9, which is integrally formed on the side wall of the lock-up device 1. The connecting part 9 forms the pivot bearing for a two-armed lever, in which a lever part is designed as a handle 10 and the other lever part is designed as a hook part 25, which adjoins the pivot bearing 8.

By finger pressure on the arcuate finger recess 11 this is in the direction of arrow 22 (see Figure 4) with the associated inner stop surface 28 against the device-side stop surface 26 moves until it abuts there. Upon actuation of the latching device, the arch part 14 can be pulled upwards at the same time.

During this movement, the latching hook 12 is brought out of engagement with its latching projection in the direction of arrow 23 and the lock-up device can be pulled off at the same time upwards.

The housing of the terminal consists essentially of a self-contained housing 3 made of an insulating plastic material, in the interior of a number of terminal blocks 4 are arranged, which consist of an electrically conductive material.

On one side of the terminal blocks 4, the connection sides for the cable connections are arranged in the form of electrical conductors, while on the opposite side, the meter connection pins are inserted and clamped there.

The housing is sealingly closed by a cover 2, in whose upper side a number of slots 16 are arranged, through which engage the knife-like bridging contacts 15 of the lock-up device 1.

The terminal blocks 4 consist of a number of separate from each other and isolated by partition walls arranged terminals 5, which consist of an electrically conductive material.

The locking device 7 of the lock-up device 1 shown locked with a side grid edge 6 on the outside of the housing. 3

2 shows the latched state, where it can be seen that the latching hooks 12 of the disengaging latching devices 7 engage under the latching edge 6 of the housing 3.

Figures 3 to 7 show the different views of the arrangement of Figure 2, where the same parts have been given the same reference numerals.

It can be seen that the latching hook 12 extends beyond the side surface of the housing 3 and in Figure 7, the view is also shown on the bottom side 19 of the housing.

From Figures 3 and 5 shows that the locking device 7 is not symmetrical attaches to the side surface of the housing 3, but that a lateral offset is present.

The bridging of the terminal blocks 4 takes place in that the bridging contacts 15 of the lock-up device 1 engage in the associated terminal-side contact slots 17 between the individual electrically isolated from each other terminals 5 and produce an electrically conductive connection between adjacent terminals 5, which arranged on both sides of the contact slot 17 and beyond are.

FIG. 1 also shows that the bridging device 1 can be connected on its underside to a test pin 18, which engages in an assigned test opening in the cover 2 and can be contacted with a special connection terminal 5.

FIG. 8 shows, as a further exemplary embodiment of a bridging device 21, that instead of the oppositely arranged middle parts 11, which are each bent outwards and partially overlap the latching device 7, a bracket part 24 can also be provided instead, which defines a self-contained recess 20 , The locking device 7 is no longer covered in this case by an arch member 14, but arranged freely on the outer surface of the lock-up device 21.

Otherwise, the same explanations apply to the same parts.

FIG. 9 shows the latching principle according to FIGS. 1 to 8, where it can be seen that with finger pressure on the arcuate handle 10 in the direction of arrow 22 the hook part 25 is pivoted outwards in the direction of arrow 23 and comes out of engagement with the latching rim 6.

FIG. 10 shows the modification to FIG. 9, where it can be seen that the latching device 7a can also be designed as a one-armed lever. In this case, the hook portion 25 is continued with a handle 10 down and the disengagement of the latching hook 12 must be accomplished by the spring member is pulled in the direction of arrow 23 against the spring force of the connecting part 9 to the outside.

In the present application is not shown that it is not necessary for the solution, when the locking device 7 is formed material integral with the lock-up device 1 as a plastic injection molded part. It can also be provided to form the entire latching device 7 as a metal part and not to provide the spring force on the bending capacity of the connecting part and the two lever parts 10 and 25, but instead use bending springs or compression springs.

The invention is not limited to the locking device shown. Instead of a locking device and clamping connections between the lock-up device and the housing of the terminal can be used.

A preferred embodiment of a clamping connection is given in the form that in each case on the narrow sides of the lock-up device, a rotary shaft is arranged, which is rotatably mounted in the lock-up device and-with respect to the figure 1 - is vertically aligned. The upper end of the rotary shaft is rotatably connected to a suitable handle, while the lower end of the rotary shaft is rotatably connected to a clamp eccentric. Thus, the clamp eccentric is pivotable upon rotation of the shaft in an open position and in a clamping position. In the open position, the clamping eccentric is disengaged from an associated housing edge 6 on the housing 3, while in the closed position, the clamping surface of the clamp eccentric engages under the housing edge 6 of the housing 3.

In the arrangement of two spaced-apart rotary shafts, each with a handle and a clamp eccentric is ensured that such an arrangement is operated simultaneously with two hands.

Drawing legend 1 Bridging device 2 Lid 3 Housing 4 Clamping blocks 5 Connecting clamps 6 Rastrand 7 Locking device 7a 8 Swivel bearing 9 Connecting part 10 Handle 11 Finger recess 12 Detent hook 13 Middle part 14 Bow part 15 Bridging contact 16 Slot 17 Contact slot 18 Test pin 19 Base side 20 Recess 21 Bridging device 22 Arrow direction 23 Arrow direction 24 Ironing part 25 hook part 26 abutment surface (from 1) 27 arch surface 28 abutment surface (from 7) 29 embedding

Claims (9)

claims 1. Bridging device (1) for a counter connection terminal (4, 5) for bypassing an electricity meter connected to the counter connection terminal (4, 5), wherein in the housing (3) of the counter connection terminal (4, 5) a number of electrically conductive terminal blocks (4) are arranged, which are contactable with the bridging contacts of the lock-up device (1), when the lock-up device on the housing (3) of the counter connection terminal (4, 5) is placed, wherein a latch (6, 7) or jamming between the lock-up device (1) and the housing (3) of the meter connection terminal (4, 5) is arranged on both sides on the side surfaces of the lock-up device (1), which consists of pivotable detents which cooperate with latching projections on the housing (3) and / or on the cover (2), characterized in that the latching device (7, 7a) is formed in each case from a latch which consists of a one- or two-armed lever (11, 25) consists, the spring-elastic pivot bearing is formed as a flexible connecting part (9) on the plastic material of the lock-up device (1). 2. Bridging device according to claim 1, characterized in that the detents are material integral with the plastic material of the bridging plug. 3. Bridging device according to claim 1 or 2, characterized in that the latching device (7, 7a) is arranged on both sides outside of the side surfaces of the housing (3) and cooperates with the latching projections on the bridging device (1). 4. bridging device (1) according to one of claims 1 to 3, characterized in that the one lever part of the latching device (7, 7a) as a handle (10) and the other lever part as a latching hook (25) is formed. 5. Bridging device (1) according to one of claims 1 to 4, characterized in that the latching device (7, 7a) with a latching hook (12) engages under a latching edge (6) of the housing (3). 6. bridging device (1) according to one of claims 1 to 5, characterized in that as a handle (10) formed a lever part of the latching device (7) is formed as a half-open, bent finger recess (11). 7. bridging device (1) according to one of claims 1 to 6, characterized in that at the two ends of a central part (13) at opposite ends of each arcuate, outwardly directed arch parts (14) are formed, which are formed as a handle , 8. bridging device (1) according to claim 7, characterized in that the latching device (7) with its handle (10) respectively below the arcuate arch portion (14) of the bridging plug (1) is arranged. 9. bridging device (1) according to one of claims 1 to 8, characterized in that the latching devices (7) on the two sides of the lock-up device (1) are actuated only with two hands.