DE162722C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The present invention relates to an electrical power switch in which the in the switch-on position rotated current circuit lever is held by a lock until through The lock is released by pressing a button.

The invention consists in an improvement of this known power switch by a new construction which of wear and tear

ίο little is subject to performing cheaply and only a single, perfect final position is allowed, so that with every other Position of the shift lever, the switching mechanism immediately returns to the final position.

As a result, the service life of the changeover switch is further increased, since it is damaged do not occur due to overheating of the contacts due to insufficient surface contact can.

The flashover of sparks from one current connector to the other is when the Switch prevented by the known arrangement of an insulating wall.

The accompanying drawing shows the new embodiment of the switch; the switch shown is a two-way switch for lighting purposes, and shows
Fig. Ι a vertical section of the switch, Fig. 2 is a side view with the cover and button removed,

Fig. 3 is a plan according to Fig. 2,

Fig. 4 is a front view.

Figures 5 and 6 show a bottom and front view of the button.

On the base plate 1 made of porcelain or the like, the plate 2 is by means of the .Spindel 3 attached. The latter is screwed into the plate 2 and by means of the lock nut 4 secured while the nut 5 secures the plate and spindle on the base plate 1 holds on. The circuit breaker 6 turns on the spindle. Its horizontal arm, which adjoins a U-shaped part (Fig. 1) is at such a distance from the base plate, so that it is placed under the plates of the pole terminals with lightly resilient pressure 7 and 8 match. On the arms there are two side pins 9 to which the downwardly bent tabs 11 of the metallic pawl IO grab through the perforated At the end of the spindle 3 occurs with some leeway. Behind the hole at the end of 12 is the pawl 10 is bent upwards. Between the bottom of the recessed part of the final lever 6 and the pawl 10, a helical spring 14 is pushed onto the spindle 3, the length of which is such that it pushes the pawl upwards. The ends of the Feather cross each other and lie on the sides of the vertical end of the Stromschlusshebeiso and a stop 15 on. The latter is expediently one on the plate 2, for example by means of the pole terminal 16 screwed into the plate. The ends the spring expediently enter sections of parts 6 and 15. The contact pieces the pole terminals 7 and 8 end in a hook 17 (Fig. 2 and 4), which after the The end is tapered.

Claims (1)

On the spindle sits a plunger 18 made of non-conductive material, which is on the The bent end 12 of the pawl 10 rests and passes through the switch button 19. The button 19 made of porcelain or other non-conductive material sits on the pressure stamp 18 and is held by the cover 22. The button 19 widens its lower end in a known manner to one provided with a slot 21 (Fig. 5) Cap 20, with which it reaches over pawl 10 and lever 6 (Fig. 1). The base plate ι is provided with a standing wreath 23, the plate 2 with the exception its extension to the pole terminal 16 surrounds so that through the cap of the Button 19 and the raised edge of the base plate 1 a very effective Shield against the flashover of sparks in the case of current passage is formed. Terminal 16 is with one pole of the line and terminals 7 and 8 are with connected to the other pole in the usual way. If the button 19 is turned to the right, it takes the power release lever 6 and the pawl 10 with. When they reach the contact piece at terminal 7, so will the pawl is lifted by the inclined surface of the hook 17 and snaps behind the same a, as the spring 14 is compressed by the lifting of the front end of the pawl and pushes it back down behind the hook. The lever 6 arrives at the same time under the plate of clamp 7 and rests against it with less pressure, that secures the touch. This way, the certainty of a full circuit achieved, because when the user releases the button, before the latch behind the hook has snapped, the spring 14 turns the lever 6 back into the open position in the drawing position shown. When turning the knob, the vertical end of the lever 6 takes one end of the spring with it, while the other end is held by the opposite side of the bracket 15 so that the spring is tensioned. To cut the power, you press the push button 18, whereby the pawl 10 is released from the hook 17, whereupon the spring 14 immediately snaps the lever 6 back into the central position shown in FIG. By turning the switch button to the left, the terminal 8 with the lever 6 and the pawl 10 is connected in the same way and is also switched off. The lifting the pawl does not interrupt the current immediately, since the lever 6 with the plate of the The clamp remains in contact until the spring 14 interrupts it sparklessly drops off, while accidental switch-off due to vibrations is completely excluded is because the spring 14 presses on the free end of the pawl 10 with great force. By omitting one of the pole terminals 7 or 8, the switch shown becomes one simple on and off switch. Godfather NT-A ν SPRU c η: Electrical switch, whose current switch lever is turned into the current short position there is held by a lock until the lock is released by pressing a button, thereby characterized in that the current circuit lever (6) has a pawl rotatably mounted on it (10), against the inward-facing end of the when turning the The closing lever's tensioning spring (14) pushes in the axial direction, while the Fixed contact piece of the pole terminal (7 or 8) with a beveled nose (17) is equipped so that when you turn the circuit lever (6) by means of a Button (19) the pawl (10) snaps into place behind the nose (17) of the contact piece and so, on the one hand, only a single, wide, short-circuit position securing the contact surfaces guaranteed, on the other hand makes the unintentional switching completely impossible. 1 sheet of drawings.