DE3119957A1 - Circuit connecting block for holding low-voltage hrc fuses - Google Patents

Abstract

The connecting block has pairs of contact pieces for the low-voltage hrc fuses on its block body. Switching flaps, which are used as support for one low-voltage hrc fuse in each case, can be fitted to the block body so that they can pivot on bearing points. The bearing points are arranged between two successive pairs of contact pieces such that they are at equal distances from respectively adjacent contact pieces. At these very same distances from the respectively outermost contact piece of the block body, a bearing point is provided on each of its two outer ends. In consequence, the switch flaps can be arranged thereon, before any installation of the block body, such that the switch flaps are opened in each case by pivoting them downwards. <IMAGE>

Description

ο «ι -ι QQrti Η · Bartels

Registration number. 126 367 ° '' ^ J 0 / DIpL-Chem. Dr. Brandes

Dr.-Ing. Hero Dlpl.-Phys. Wolff

KARL PPISTERER ELEKTROTECHNISCHE

SPEZIALARTIKEL GMBH & CO KG. . APPROVED REPRESENTATIVES AT

EUROPEAN PATENT OFFICE

7000 Stuttgart 60 (Baden-Württemberg) representatives before the

EUROPEAN PATENT OFFICE

'' MANDATAIRES PRES L ¹ OFFICE

EUROPEENDESBREVETS

Circuit switching strip for Lange Str. Si, d-7000 Stuttgart

_ -. "" _. '' Tel. (0711) 296310 and 297295

Integration of NH fuses Telex0722312 (patwo d)

Telegram address:

- ~. tlx 0722312 Wolff Stuttgart

PA Dr. Brandes: Headquarters Munich

May 13, 1981 487333 rrp

The invention relates to a switching strip with a strip body on which pairs of contact pieces are arranged one behind the other in the longitudinal direction for receiving an NH fuse, with conductor rails arranged in the area of the rear wall of the strip body, via which a contact piece
each pair with the one provided for the cable outlet
Terminal end of the strip body is connected by the
Rear wall of the strip body forwardly protruding side walls as well as with each serving as a carrier for one of the NH fuses switching flaps, which are pivotable for a movement between a closed position and an open position in the area between the contact pieces of adjacent
Pairs as well as at a first end of the last body to the
Side walls of the same bearing points provided can be attached.

Switching strips of this type are already known, see DE-AS
1.805 354. The installation of such switching strips is generally carried out in such a way that the switching flaps for moving from the closed position to the open position can also be folded downwards individually without opposing each other.

Post shock office Stuttgart 7211-700 BLZ 600 100 70 Telephone information and

Dsuische Bank AG ₁ 14/286 30 BLZ 600 70070 Orders are only possible after written

Confirmation binding

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to hinder laterally. Depending on the conditions at the installation site However, on the safety edges, the cable outlet is at the upper end or at the lower end of the safety edge. If it is to be ensured that the switching flaps in both cases have the usual positional arrangement in which they are used for open to be folded downwards, one is accordingly forced to use either two types of safety edges, namely once with an outlet on top and once with an outlet on the bottom, to be provided or, if necessary, a conversion of the switching strip undertake, in which the position of the discharge rails is changed to connect to the other end of the strip body relocate.

The invention is based on the object of creating a switching strip of the type in question, which can be used without modification is suitable for the cable outlet at the upper or lower end, without the independent operability the switching flaps is impaired.

In a switching strip of the type mentioned, this object is achieved according to the invention in that the contact pieces are arranged lying in a parallel to the rear wall of the strip body, common plane that the bearing points the bearings of the switching flaps located between successive pairs of contact pieces, measured in the longitudinal direction of the strip body, are arranged from the respective adjacent contact pieces at the same intervals, which the Distance of the bearing point of the bearing provided at the first end of the strip body from the adjacent contact piece corresponds, and that a further storage is provided at the opposite second end of the strip body, whose bearing point is arranged at the same distance from the adjacent contact piece as the bearing point of the storage at the first end of the last body.

In a preferred embodiment it is provided that an extinguishing chamber is present for each pair of the contact pieces which end on the strip body and / or on the contact piece either in the area of one or the other contact piece of the subject f Pair is releasably attachable. This ensures that in every installation position of the strip body and when it is present only a single arcing chamber for each pair of contact pieces, which is used on the upper contact piece, on which the circuit is disconnected when the flap is folded down.

The invention is explained in detail below with reference to an embodiment shown in the drawing.

Show it:

Fig. 1 is a front view of the strip body according to an embodiment of the Switching strip, whereby the switching flaps are omitted and the strip body for the cable outlet upwards possesses intended location;

Fig. 2 shows a longitudinal section of the embodiment in the same positional arrangement as in Fig. 1, but with attached switching flaps;

Fig. 3 is a larger-scale view of the in Fig. 1 with III, IV designated area of the last body;

FIG. 4 shows a longitudinal section of the in FIG. 1 drawn on the same scale as FIG III, IV designated area of the inguinal body and

5 and 6, corresponding to FIGS. 1 and 2, are a front view and a longitudinal section, respectively, wherein the strip body is the positional arrangement provided for the downward cable outlet owns.

The switching strip shown in the drawing has an elongated strip body 1 with a rear wall 3 and side walls 5 and 7 emerging from the plane of the rear wall

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3 crawls forward so that they come together with the
Rear wall 3 delimit a forwardly open, channel-shaped interior space with a rectangular cross-section. The back wall 3 and
the side walls 5 and 7, which together delimit the channel-shaped interior, consist of an insulating material, the

Side walls 5 and 7 are designed in a mirror-inverted manner to one another. In the embodiment shown, these walls are designed to be continuous over the entire length of the switching strip. However, the walls could also be inserted into one of the number of NH fuses to be included in the switching strip
be divided into a corresponding number of sections.

Within the channel-shaped interior are one behind the other in the longitudinal direction, ie with a normal vertical arrangement of the
Switching strip, arranged in a straight line one above the other pairs of contact pieces 9 and 11, of which one contact piece 9 is in a conductive connection with a discharge rail, which are denoted by 13, 14 and 15. The derivation rails 13, 14, 15 run in the vicinity of the rear wall 3 from the associated contact piece 9 to the connection end 17 of the strip body 1 provided for the line outlet. The other contact piece 11 of each pair is provided with a
Terminal lug 19 conductively connected, the end of which extends through
the rear wall 3 extends through to the outside. The contact pieces 9 and 11 of each of the pairs are arranged at such a mutual distance that an NH fuse 20 can be inserted between the contact pieces 9, 11 so that their contact blades 21 and 22 are in contact with the contact pieces in the usual way. Each NH fuse 20 is detachably arranged on an associated switching flap 25 in the usual manner. The switching flaps 20 can be attached to bearings which are provided on the side walls 5 and 7 in the area between the contact pieces 9 and 11 of adjacent pairs that the switching flaps 20 from a closed position,
in which the contact blades 21, 22 are each in contact with a contact piece 9 or 11, in an open position

can be folded downwards, in which, as in FIGS. 2 and 6 using the example of the uppermost switching flap 25 is shown, both contact blades 21, 22 of the NH fuse 20 out of contact with the contact pieces 9 and 11 of the relevant Couple.

The switching flaps 25 are made of plastic by compression molding and have a cover part 27 and on both sides at the edges of projecting walls 29, which when mounted on the mounting of the strip body 1 switching flap 25 within the side walls 5 and 7 run parallel to these. In the figures, only one of these walls 29 is closed see, namely that wall 29 which, in the illustration of FIG. 2, of the side wall 7 and in the illustration of FIG. 6 of the side wall 5 of the last body 1 is adjacent.

When the switching flap is closed, the cover part 27 forms a cover which, as shown in FIGS the switching flaps located in the closed position is shown, access to the channel-shaped interior of the Safety edge prevented. In the area of the upper end of the Lid part 27 is a handle 31 formed, which is for manual operation is provided by the operator.

For the interaction with the storage on the side walls 5 and 7 of the strip body 1, the side walls of the switching flaps 25 each have an extension 33 of the relevant wall 29, one of which is shown in FIGS. only one can be seen (since only one of the two side walls 29 of the switching flaps 25 is shown). Any approach 33 is through a recessed therein, extending in the longitudinal direction of the extension 33 and at the free end of the same open slot 34 designed like a fork. As FIGS. 2 and 6 show most clearly, this slot 34 is for the engagement of a bearing pin 35 is provided, which is used for mounting the switching flaps 35 on the side walls 5 and 7

-X-

of the last body 1 is part of the exemplary embodiment, as FIGS. 1, 3 and 5 show particularly clearly, from the side wall 5 extends continuously to the side wall 7 and serves to determine the position of the pivot axis of the switching flaps 25 on the switch walls 5, 7 to define.

In addition to the bearing pin 35 belong to the storage for the switching flaps 25 guide grooves 37, 37 'which are worked into the side walls 5 and 7 of the strip body as recesses and have a shape corresponding to one another, which at can best be seen from Fig. 4. The guide grooves 37, 37 'go into one of the front edge of the relevant side wall 5 and 7, straight end sections 38 and 38 'open over, see FIGS. 3 and 4.

The switching flaps 25 have on each approach 33 as a guide body, dor intended for cooperation with the guide track 36 formed by the guide groove 37 or 37 'of the bearing is, in each case a lateral projection 39 which, when the switching flap 25 is attached to the strip body 1, is in the associated guide groove 37, 37 'extends into it. The curvature of the guideway 36 is how Fig. 4 shows most clearly, chosen so that the projection 39 when pivoting the switching flap 25 from the closed Position is guided on a path in which its distance from the bearing pin 35 increases. Through this When the switching flap 25 is pivoted down, a superimposed pivoting movement results from the closed position Translational movement by which the switching flap 25 is displaced so that the bearing pin 35 moves away from the closed end of the slot 34 in the approach 33 removed. As FIGS. 2 and 6 ■ show the example of the closed switching flap 25, is in the closed position of the bearing pin 35 in the area of the closed end of the slot 34 and 6 uppermost switching flap 25 in the open position, the bearing pin 35 is in the area

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the open end of the slot 34.

As Fig. 4 shows particularly clearly, the guide groove 37, 37 'is designed as a double guide, i.e. the guide groove is available twice, so that two guideways 36, with donon the projection 39 serving as a guide body can be optionally brought into engagement. Like Figs. 2, 6 and in particular FIG. 4 clearly shows, the guide grooves 37, 37 'are symmetrical about an axis of symmetry, which in FIG relevant side wall 5, 7 extends perpendicular to the plane of the rear wall 3 and through the bearing pin 35 therethrough.

The latter is, measured in the longitudinal direction of the strip body 1, at the same distance from both adjacent contact pieces 9 and 11 consecutive pairs arranged as this can be seen most clearly from FIGS. 1 and 5.

This type of arrangement of the bearing pin 35 and the formation of the guide grooves 37, 37 'as a double guide it that a between adjacent pairs of contact pieces 9, 11 mounted switching flap 25 optionally with the one or the other pair of contact pieces 9, 11 cooperate can, depending on the orientation in which the fork-shaped lugs 33 are attached to the bearing pin 3 5, wherein In one case, the projection 39 is pushed into the guide groove 37 through the end section 38 which is open to the outside or is pushed through the other end portion 38 'into the guide groove 37'. This enables the safety edge to be installed in the position shown in FIGS. 1 to 4, the connection end 17 being at the top and the projections 39 of the lugs 33 serving as guide bodies in the guide groove 37 intervene. In the case of the one shown in FIGS. 5 and 6, the reverse The connection end 17 is located at the bottom. In this case, the switching flaps 25 are stocked so that the Protrusion 39 engages in guide groove 37 'at lugs 33. In both cases, the switching flaps 25 are correct Positional arrangement, i.e. aligned so that they are to

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Transfer from the closed to the open position can be folded from top to bottom.

In order to avoid the when moving from the closed to the open Position to extinguish any arcing occurring at the respective upper contact piece 9 5 or 11, is for each Pair of contact pieces 9, 11 an extinguishing chamber 41 is provided. This can be plugged onto one or the other contact piece 9, 11, since depending on the installation position dos Loistenkörpers once the Kontaktstücko 9 are upper contact pieces on which it can lead to arcing, see Fig. 1 to 4, where the connection end 17 is at the top, and in a different installation position Contact pieces 11 are on top, as in the example of Fig. and 6 is the case where the terminal end 17 is down, so that at the Kontaktstückon 11 the arc can occur.

- 1O / claims -

Claims (4)

Claims (1.ySwitching strip with a strip body, on which pairs of contact pieces are arranged one behind the other in a longitudinal direction to accommodate an NH fuse, with conductor rails arranged in the area of the rear wall of the strip body, via which a contact piece of each pair with the connection end provided for the line outlet of the strip body is connected, from the rear wall of the strip body forwardly protruding side walls and with each serving as a carrier for one of the NH fuses switching flaps, which can be pivoted for a movement between a closed position and an open position in the area between the contact pieces of adjacent pairs as well bearing parts provided at a first end of the strip body can be attached to the side walls of the same, characterized in that the contact pieces (9, 11) are arranged lying in a common plane parallel to the rear wall (3) of the strip body (1), that the bearing points ( 35) the between au successive pairs of contact pieces (9, 11) located bearings of the switching flaps (25), measured in the longitudinal direction of the strip body (1), from the respective adjacent contact pieces (9, 11) are arranged at the same intervals, to which the distance of the bearing point (35) corresponds to the storage provided at the first end of the strip body (1) from the adjacent contact piece (9, 11), and that at the opposite second end of the strip body (1) a further bearing is provided, the bearing point (35) of which is at the same distance from the adjacent The contact piece (9, 11) is arranged like the bearing point (35) of the bearing at the first end of the strip body (1). 2. Switching strip according to claim 1, characterized / that each switching flap (25) has a guide body in the area provided for cooperation with the bearing, which is guided during the pivoting movement in a guide in the associated side wall area of the strip body (1), and that -Ϋ-ι at those between successive pairs of contact pieces (9, 11) located bearings the guide as a double guide with two optionally with the guide body engaging guideways (36) is formed, which are arranged symmetrically to an axis of symmetry, in the side wall (5, 7) centrally between the adjacent contact pieces (9, 11) of successive pairs and runs perpendicular to the plane of the rear wall (3). 3. Switching strip according to claim 2, characterized in that the cooperating with the storage part of the switching flap (25) is designed as a fork-shaped projection (33) which has an open slot (34) for the engagement of a bearing pin (35) and on which a lateral projection (39) is provided as a guide body, which protrudes into a guide track (36). engages ^{forming guide groove (37, 37 r} ) incorporated in the associated area of the side wall (5, 7) of the strip body (1). 4. Switching strip according to one of claims 1 to 3, characterized in that for each pair of the contact pieces (9, 11) an extinguishing chamber (41) is present, which on the strip body (1) and / or on the contact piece either in the area of one or of the other contact piece (9 or 11) of the pair concerned is releasably attachable.