DE351147C - Electric switch with swinging handle - Google Patents

Description

GERMAN EMPIRE

ISSUED APRIL 3, 1922

REICH PATENT OFFICE

PATENT LETTERING

- M 351147 CLASS 21 c GROUP 28

Robert Alkan in Paris.

Electric switch with swinging handle. Patented in the German Empire on June 12, 1920.

According to the Union Treaty of June 2, the priority for this registration is due of the application in France of August 19, 1919.

There are known switches in which between the controlled by the handle and the Contact plates carrying parts a spring is provided, the final movement of the moved parts accelerated. Initially, the movement of the

Handle caused by special intermediate fixed parts without the involvement of Feather. The latter only serves to finally accelerate the movement of the switching part.

According to the present invention »the one

Claims (2)

Switches with a swinging lever like the tumbler switch are concerned, the vibration of the handle is transmitted from the start and immediately only by a helical spring to the contact carrier without other auxiliary organs, and this is achieved by the fact that this spring is on a certain length at both ends on the one hand on the swinging lever and on the other hand on the contact carrier; ίο is fastened in such a way that it is subjected to pressure along its entire length, but only to bending in its central part. Another characteristic of the invention is that the individual parts of the switch are mounted on a single support made of insulating material, which can also be the housing. The drawing shows: Fig. Ι a horizontal section through the overall arrangement on an enlarged scale. Fig. Ι a is a section along line A-A of the j Fig. I. j Fig. 2 shows a simple contact spring. : Fig. 3 shows a double contact spring. j The housing of the switch consists of j a porcelain body α made of one piece, in which the contacts b, b are embedded. This ; The whole of the lower part of the housing is hollow and has a circular opening c at the top, through which the oscillating lever g j emerges, which can rotate about the axis e. The contact springs / are between two! Insulating washers g · mounted on a support h, j which can rotate about a transverse axis / which; is mounted in the lower part of the block in vertical bearing jaws and bayonet slots. According to the invention, a very strong, spiral spring k is attached on the one hand to the lower end of the oscillating lever d and on the other hand on the rounded head I of the carrier h for the contact springs / in such a way that when the hand lever d swings out, the spring k is only in its central part is subject to bending, but is subjected to compression along its entire length. As a result, without the interposition of other parts between the hand lever and the contact carrier, ie. <l through the spring alone, a vigorous and constant pressing of the contact spring against the contacts and a sudden interruption are achieved and prevent any intermediate points and the occurrence of arcs. The insulation of the button d1, which forms the only outer metal part, is secured by the two washers g. The cables can be connected either from below or from the side, the clamping screws can be exchanged as desired, for which purpose two holes η, ο provided with nut threads are provided in each contact. The embodiment shown in Fig. 1 shows a simple switch that has only simple leaf springs f (Fig. 2). An oscillating switch can also be made with double interruption according to the same principles as described above by using double contact springs p (Fig. 3), and then correspondingly two auxiliary terminals. Sponsorship τ claims: 1. Electrical switch with swinging handle and spiral spring between the handle and the contact carrier, characterized in that the handle (d) consisting of a swinging lever carries a pin at the end protruding into the switch housing (a) on which one end of the spiral spring (k) is pushed, the other end of which is pushed onto a support pin (I) of the oscillating contact carrier (K) , in such a way that the ends of the spiral spring are rigid to a certain length with respect to bending, while the middle part of the spring (k ) can bend freely, but the entire length of the spring (k) is subjected to pressure when switching over. 2. Switch according to claim 1, characterized in that the axis (i) of the contact carrier (A) is mounted in bayonet slots (/), which makes it possible to arrange all pieces on a single carrier made of insulating material (housing a). 1 sheet of drawings.