DE1067503B - Combination switch actuated by cams with multiple interruptions - Google Patents

Description

GERMAN

There are known switches in which the contact bridge or contact lever by a with the switch shaft connected element, the cam. The number of poles can vary with cam switches Stringing together several switching chambers can be enlarged, in which case it is expedient in one switching chamber a slide operated by a cam opens or closes the contacts.

In order to increase the switching capacity, such switches with multiple interruptions are required and built, but it is still required that with the simplest switch construction at the same time a safe The contacts are lifted off.

With the previous designs of the cam switches, it was difficult to do all of them Meeting demands in a simple way.

In a known construction of a cam roller switch, there is, for. B. the housing from one insulating pressed part of U-shaped cross-section, which by ribs or partitions in pocket-shaped Chambers is divided, the side walls form the guides of the contact slide. This construction does not allow a simple arrangement of a multiple break. Also takes place the guide only on the side walls.

A cam-operated combination switch is described below, the avoids the disadvantages indicated by a favorable construction. The switch can have an on and have multiple interruptions known per se, but in a type of application that is new and has advantages offers.

The subject of the invention is thus a combination switch actuated by cams with multiple interruptions, in which two housing walls are partially arranged one above the other as a guide Serve slides that protrude over the switching chamber halves and each open a contact group or close, the slides made of insulating material guide each other. The interruption per pole can be done by a movable switching bridge, with two in one switching chamber Switching bridges can be provided.

If a quadruple interruption is to be achieved in a simple manner, two movable ones per pole can be used Switching bridges are used, with four switching bridges in each switching chamber are provided.

In the case of a quadruple interruption, there are two moving jumpers between them and one more additional fixed switching bridge arranged.

The individual switching chambers are lined up and then in a common grid system built-in.

Cam operated
Combination switch
with multiple interruptions

Applicant:
ELIN Aktiengesellschaft
for electrical industry,
Vienna

Representative: Dipl.-Ing. C. elements, patent attorney,
Deggendorf, Krankenhausstr. 26th

Claimed priority: Austria from March 22, 1955

Ing.Fritz Mang, Vienna,
has been named as the inventor

The guide carriages are designed in such a way that a rotation-proof recording of the movable Switching bridges and the contact pressure springs is guaranteed. The control of the guide carriage is carried out by means of cam disks, which their rotary movement via provided on the guide carriage Transferring roles and converting them into a lifting movement. The guide carriages can be attached to their Ends have approaches into which the switching bridges and contact pressure springs are inserted to get a good, safe, torsion-proof guide.

An exemplary embodiment of the invention is described with reference to four figures.

1 shows the view of a switching chamber, the individual switching elements being visible;

Fig. 2 shows a section along AB of Fig. 1; 3 shows an enlarged view of a contact formation as a plan view in direction C; the end

FIG. 4 shows a section through the guide carriage and the movable switching bridge, specifically according to DE of FIG. 3.

In the switching chamber 1, two fixed contact pieces 4 with indicated connection points are visible per pole. The two guide carriages 5 provided in a switching chamber 1 are, for the purpose of better guidance, as can be seen from FIGS. 1 and 2, extended beyond the center of the switching chamber

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Claims (5)

and engage (FIG. 3) against the contact compression springs 7 in the movable switching bridges 2. This results in precise dimensional guidance so that the contact rivets 12 of the movable switching bridge 2, which are expediently provided with a hard silver coating, strike the contact rivets 12 of the fixed switching bridge 4 or 3 precisely. The fixed switching bridge 3 establishes the connection or interruption of the current flow via the two fixed contact pieces 4 in the event of a quadruple interruption. The control cam 6, for. B. driven by a shaft, when rotated causes the actuation of the rollers connected to the guide carriage 5 and subsequently the reciprocating movement of the carriage 5, which closes or opens the contacts located on the switching bridges. In these constructions, the guide carriages expediently have approaches into which the switching bridges and contact compression springs can be inserted. The contact bridges themselves are expediently equipped with contact mushroom pads because of their good contact between straight metal sheets. The invention itself is not restricted to the exemplary embodiments in FIGS. Patent claims: 1. Combination switch actuated by cams with multiple interruptions, in which two housing walls serve as a guide for partially superimposed slides that protrude over the switching chamber halves and each open or close a contact group, thereby characterized in that the carriages made of insulating material lead each other. 2. Combination switch according to claim 1, characterized in that the interruption per Pole takes place through two movable switching bridges (quadruple interruption) and in a switching chamber four jumpers are provided (Fig. 1). 3. Switch according to one of claims 1 or 2, characterized in that in the case of the quadruple interruption to the two movable switching bridges (2) an additional fixed switching bridge (3) is provided between these. 4. Switch according to one of the preceding claims, characterized in that the guide carriage (5) have lugs into which the switching bridges (2) and contact springs (7) are inserted (Fig. 4). 5. Switch according to claim 4, characterized in that the switching bridges (2) are made from straight metal sheets with mushroom contact pads. Considered publications:
German patent specification No. 950 932. 1 sheet of drawings © 909 639/246 10 59