DE2364972A1 - Socket element for fuse strip - has swivel lever for fuse mounting, supported on pivot bearing of insulating housing - Google Patents

Abstract

The fuse socket element is preferably in the form of a series clamp in which the fuse is swivelled into the contact space by a lever. The swivelling lever is rotatably and slidably mounted on a bearing pin in the insulating housing so that after pushing the fuse down and its contacting with the respective terminal rails the swivelling lever can be displaced into a rest position, in which the sprung pressure elements in the swivelling lever provide the desired contact stress onto the fuse. The connecting rails are referably in the form of fork- or prism-shaped contact elements, in order to receive fuses of different length and diameter. The sprung pressure elements may hold the fuse within the lever also in non-contacting state.

Description

Patent application

C. A. Weidmüller KG, 4930 Detmold l4

Base element for fuses

The present invention relates to a base element for fuses, especially in the embodiment of a terminal block in which the Fuses swiveled into the contact area with a swivel lever, will.

Such stackable fuse terminals are used in switchgear, Controls and devices to make the necessary protection of the main and control circuits. The possibility of side by side individual fuse terminals on mounting rails to terminal strips offers a number of significant advantages, such as easy interchangeability, good clarity, lower. Clearance requirement. In addition, in this embodiment, the associated with the current input Fuse can also be used as an input terminal.

There are already known base elements in which the fuse element Inserted into a holding device from the side or from the front and is pushed together with this vertically from above into the contact space. The required contact pressure is with this construction applied by U-shaped contact plates. The holding device is only supported by the U-shaped contact plates held securing element secured in the end position. These designs have the overall disadvantage that the holding device is not separately secured against unintentional actuation, that the U-shaped contacts only require the use of fuse elements allow approximately the same diameter and that in the lined up state due to the relatively little freedom of movement of the holding device In the base element, it is difficult to insert or remove fuses, particularly in areas of switchgear that are difficult to access is. Furthermore, to save space, a Proposed construction * in which a hand lever as approximately · U-shaped

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Mound is formed, its flat. Side walls run on both sides of the fuse and are hinged to an axis extending between the contact terminals. The side walls are connected to one another by two transverse webs, one of which engages the fuse, while the other web connects the opposite ends of the side walls of the bracket. To remove the fuse, the lever can be pivoted between a lower and an upper position facing the other contact terminal. Z This arrangement provides \ / ar the advantage of saving space, but has the drawback that the fuse is not arranged beruhrungsgeschützt that in turn the U-shaped contacts only needed the use of security elements is approximately the same diameter allow and _x daß.das inserting or it is difficult to remove fuses. "_

The invention is therefore based on the object of the aforementioned To eliminate disadvantages and to design a base element in such a way that by a special shape and arrangement of the contact and holding elements the use of fuses of different lengths and diameters is possible, the fuse is accomodated with protection against accidental contact and the insertion or removal of fuses even in poorly accessible areas of switchgear without difficulty. can be performed .. In addition, the swivel lever must protect against unintentional Actuation be secured.

According to the invention this object is achieved in that the pivot lever is rotatably mounted on a bearing journal of the insulating housing and is longitudinally displaceable in such a way that after pivoting and contacting the fuse with the associated connecting rails of the pivot lever can be moved into a locking position and thereby the required Contact load, which is applied by spring-loaded pressure pieces arranged in the swivel lever, remains securely in place.

The construction according to the invention offers the advantage that for the first time With such base elements, the optional use of fuses of different lengths and diameters is possible without retooling · This fact is of particular importance when one considers, for example, the large number of fuse sizes used in Europe thinks that so far each has a very specific base element for itself

509828/0046

required for mounting. Another benefit is in it to see that the arrangement of the resilient pressure pieces in the pivot lever in connection with the., integrally formed lifter of the lever with the safety device swiveled completely out of the contact area by up to 180 ° can be. This leads to the backup without difficulty can be easily inserted or removed even in confusing areas of switchgear. Also in manufacturing Regard, the present solution is to be regarded as particularly favorable because the connection contacts consist of simple stamped parts. A complicated bending process into U-shaped contacts, as before usual, can be omitted because the necessary contact pressure is only provided by the separately arranged pressure pieces using commercially available Coil springs is applied. It is also particularly advantageous that only the simply shaped stamped parts from good - ι conductive material. j

The subject matter is based on the drawing using an exemplary embodiment the invention explained in more detail .. It shows:

Fig. 1 with the base element according to the invention in a front view swiveled out pivot lever and an inserted fuse shown in dash-dotted lines,

Fig. 2 the base element according to the invention in plan view without pivot lever with representation of the busbars and the on Insulating housing molded bearing journal,

3 shows the base element according to the invention in a rear view with it pivoted in Swivel lever and illustration of the attachment of the lever on the bearing pin and movement arrows,

4 shows a sectional view through the contact space of the base element with swiveled in and locked swivel lever, also cut, and inserted in contact with the rails Fuse element.

The embodiment shown in the figures clearly shows that the base element according to the invention basically consists of two main parts, the Isolierciehäuse (l) and the pivot lever (2). In turning and

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23S4972

Shift point of the pivot lever (2) is a slot-shaped ^coulter: nierauge (7) is provided into which a bearing journal (l4) of the insulating housing (l) engages. The hinge eye (7) ensures both a rotary movement and a longitudinal displacement of the lever (2) on the bearing pin (l4).

In the pivot lever (2) pressure pieces (5) are embedded, which simultaneously serve as a spring cage for · the compression springs (6) »the compression springs C6-) can, for example, together with the pressure pieces (5) in the The chambers provided for this purpose in the swivel lever are inserted and fixed by means of molded lugs (l6). The pressure pieces (5) opposite j A lifter (4) is provided lying on the pivot lever C «S). The Si ! Securing element (3} - can be placed between the lifter (4) and the under tension standing pressure pieces (5) are inserted. This arrangement prevents the lever (2) from falling out when the lever (2) is pivoted out the fuse. (4) *

In the contact space (8) there are only two busbar pieces (ll) with j connections at the ends for incoming and outgoing '. Head provided. The connections consist, for example, of a ', clamping screw (I3) and a tension bracket (l2j. In order to be able to securely accommodate fuses of different diameters, the busbar pieces (ll) are, for example, fork-shaped or prism-shaped on their front side in the contact space (8) particularly favorable in terms of production technology.

The introduction of a fuse (3) into the contact space (8.) is now preferably done in such a way that the fuse (3) is inserted between the lifter (4) and pressure pieces (5) when the lever (2) is pivoted out (2) pivoted around the bearing pin (l4) of the insulating housing (l) into the contact space (8), the fuse (3) being clamped resiliently between the pressure pieces (5) and the, for example, fork-shaped busbars (ll). After the fuse (3) has made contact with the busbars (ll), the pivoting lever Ce) «ur.Er Moving the entire lever {2) by hand \ a locking of the ßastnäsen (lO) of the lever (2) with a rännase (9)

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of the insulating housing (l) and so the required contact pressure persists. By continuing the swivel lever (2) into the Contact space (8) is simultaneously in the contacting state of the Siclierung (3) the lifter (4) removed from the securing element (3), which is particularly important for thermal reasons. The pivot lever (2) is also secured against unintentional actuation because he only disengages by pushing and sliding at the same time.

Detmold, December 20, 1973.

PAT hl-kg ·.

Patent claim

50982 8/004 6

Claims (6)

Claims / ll base member for fuses, in particular in the execution ^ - 'the form of a terminal, wherein the backup is pivoted to a pivot lever in the contact space, characterized in that the pivot lever is mounted on a bearing journal of the insulating housing rotatably and so a longitudinally displaceable manner, that after pivoting and contacting the fuse with the associated connecting rails, the pivot lever can be moved into a latching position and thereby the required contact load, which is applied by resiliently mounted pressure pieces arranged in the pivot lever, remains. 2. Base element according to claim 1, characterized in that the Ahschlussschieneh as fork-shaped or prism-shaped contact pieces are formed and thereby fuses of different lengths and diameters can be added. 3. Base element according to claim 1 and 2, characterized in that the resilient pressure pieces mounted in the swivel lever also secure within the lever in the non-contacting state fix and the lever is designed as a lifter ". 4. Base element according to claim 1 to 3 »characterized in that Latching lugs are arranged in the insulating material housing, which form the pivot lever reaches under in its end position. 5. Base element according to claim 1 to 4, characterized in that the insulating material housing has an opening for inserting a cross-connecting rail in the area of the contact pieces. 6. Base element according to claim 1 to 5, characterized in that an optical control element or a viewing window is provided in the pivot lever. Detmold, December 20, 1973
PAT hl-ko 509828/0046