DE407677C - Switch for switching electrical circuits step by step - Google Patents

Description

GERMAN EMPIRE

ISSUED DECEMBER 30, 1924

REICH PATENT OFFICE

PATENT LETTERING

- JVl: 407677 CLASS 21 c GROUP 30

(S 64793

Siemens & Halske Akt-Ges. in Siemensstadt b. Berlin. Switch for switching electrical circuits step by step.

Addendum to patent 333313.

Patented in the German Empire on January 18, 1924. Longest duration: August 23, 1937.

In the main patent, a switch for the push pin is coupled to the knee joint

On and off switching mechanism to be carried out abruptly brought over its extended position

switch electrical circuits is treated, which then automatically by spring

The arrangement of the switch is made in such a way that the effect is that which is attached to the switchgear

that by pressing a button a j current connector with the switch contact

Claims (3)

th can be brought into engagement immediately. The opening of the circuit also takes place in leaps and bounds, in that when the button is released, a spring pushing the pressure pin upwards suddenly brings the knee-joint-like switching mechanism and thus also the current connection pieces back into their starting position. . The invention relates to a further training ^: ίο education and perfecting of the switch! in such a way that it can be used for sudden switching over of electrical circuits. | According to the invention this is made possible i that the current connection pieces of the between two; parallel, appropriately similar isola-; tion plates lying knee-joint-like switching mechanism both cause the closure of the switch contacts attached to one and the other insulation plate alternately. The arrangement is preferably such made that the connection terminals of both insulation plates can be accessed from one side are borrowed, which is particularly important for the M011 days of the switch, because it is a convenient Connecting the switch and adequate protection of the switch mechanism; mus is guaranteed. Furthermore, the insulation of the current connection pieces with respect to the contacts have been improved according to the invention. So far, the strip connected to the knee joint arms consisted of insulation material on which a sheet metal (current connector) was attached to make contact, while the spindles were made of metal. This arrangement has the disadvantage that is protected · the creepage distance between the metal parts low and further the insulating strips against i combustion is not always sufficient. According to the invention, the strip connecting the articulated arms is made of metal, while an insulating piece, expediently a bush, is pushed over the spindles. In the figures, the new switch is illustrated in one embodiment. ; Fig. Ι and 2 illustrate the switch j in plan view from different sides; 'Fig. 3 illustrates the switch is in plan view. The knee-like switching mechanism is explained in detail in \ main patent. According to: Fig. Ι the switching mechanism is also housed in a [housing 19, onto which a cover 20, which serves to guide the bolt 21, is screwed onto the upper end. The arrangement of the upper insulation plate 3 by the bracket 1 is the same as that according to the main patent. The brackets 4 of the second insulation plate 5 are screwed to the brackets 6a of the first insulation plate by screws 2 and to the housing by further screws 6. 7 are the switch contacts belonging to the upper and 8 are the switch contacts belonging to the lower insulation plate. The metal strip 9 serving as a current connection piece is provided on both sides with slots 10 which serve as a guide for the spindles 11. These are isolated from the metal strip 9 by insulating pieces, suitably insulating bushes 12. The terminal plates 13 arranged in the switch carry connection terminals 14 (FIGS. 2 and 3) which are connected to the connection terminals 15 (FIGS. 1 and 2) by connecting wires 16. The purpose of this arrangement is to make all the connection terminals of the switch accessible from one side. In Fig. 2 is the connection of the two insulation plates 3 and 5 by the bracket 4 illustrated. The metal sheets 18 (Figs. 2 and 3) serve to protect the switchgear assembly. The figure also shows the increase in the creepage distance between the The insulating bushes 12 pushed over the spindles 11 and the current connection pieces 9 closed recognize. Fig. 3 shows the plan view of the switch with the protective plates 18 and the terminal plates 13. Pa te ν t-An s ρ odor: ι. Switch for steps to be carried out Switching electrical circuits according to patent 333313, characterized in that that the current connection pieces of the between two parallel, appropriately similar Isolation plates lying knee-joint-like switching mechanism both the closure of the one as well as the cause switch contacts attached to the other insulation plate to alternate. 2. Switch according to claim 1, characterized in that that consists of a metal strip Existing current connection pieces are isolated from the spindles by insulating pieces (sockets) pushed over them. 3. Switch according to claim 1 and 2, characterized in that the terminals so arranged for the switch contacts no of the lower insulation plate at the level of the upper insulation plate are that all terminals are accessible from one side. 1 sheet of drawings.