DE230728C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- M 230728 CLASS 21 c. GROUP

Pressure pin happens.

Patented in the German Empire on November 11, 1909.

There are push button switches with a push button known, in which the straight line Movement of the pressure pin is transferred to a ratchet wheel, which in a known manner as with the commonly used rotary switches, it causes the current to be short-circuited.

This transfer of motion makes the switch expensive and does not provide any Advantage in front of the switches with immediate ίο rotary movement, so that this type of push-button switches nnr has found little entry.

In contrast to this, a push-button switch is known from German patent 61556 become, in which the rectilinear movement of the pressure pin directly to the power supply is exploited in that a switching element connected to the pressure pin closes or opens the current.

However, this switch does not comply with the association's regulations, which is an instantaneous Request disconnection regardless of the will of the disconnector.

The invention is intended to solve the problem with a push-button switch with back and forth moved switching element the prescribed, caused by spring force instantaneous To bring about deactivation.

For this purpose, the arrangement generally shown by FIGS. 1 and 2 results first.

When switching on (Fig. 1), the pressure pin D transmits its movement through a locking device Sp ² to a freely movable peeling element 5, which is connected to the contacts K. During this movement, two springs i ⁷² and F ^{1 are} tensioned, of which F ² acts on the pressure pin D and F ¹ on the switching element 5.

In the switched-on position (Fig. 2) the switching element S is held by a second locking device Sp ¹ against the pressure of the spring F ¹ , while the pressure pin D is returned to the initial position by the tension of F ^2.

When switching off the locks Sp ² and Sp ¹ , which must be specially designed for this purpose, are triggered simultaneously or one after the other by pressing the pin again, so that the now free switching element S is snapped back by the spring F ¹ and the contacts K suddenly disconnect (Momentary switching).

The released pressure pin D follows the tension of the spring F ² so far that the lock Sp ' ¹ is set correctly again for the next circuit.

The design of the locks Sp ¹ and Sp ² , the arrangement of the springs F ¹ and F ² , their connections with the pressure pin and the switching element can be of various kinds without affecting the basic device of the push-button switch on which the protection is claimed something changes.

As illustrative examples, two push-button switches are described below;

Embodiment i. 3 and 4 show an embodiment in the switched-on position. When pressing down, the pressure

D pin with the switching element S through the lock Sp ² in connection that the springs attached to the switching element f ² lie against the shoulder a ^{2 of} the pressure pin.

The lock Sp ¹ to hold the switching element in the switching position is in a similar manner by the springs f ¹ attached to the switch housing in conjunction with a

ίο causes approach a ¹ on the switching element. The arrangement and effect of the springs F ¹ and F ² can be readily seen from the drawings.

The release of both locks when the button is pressed a second time for the purpose of switching off takes place in that the springs f ¹ and f ² are lifted off the projections a ¹ and a ² by pushing the tubes R ¹ and R ^{2 underneath.} R ² is a tube that is firmly attached to the base and, when the pressure pin D and the springs f ^{2 are} pressed down, slides between the two and lifts the springs beyond the approach a ^%. The tube R ¹ slides loosely on the switching element S and lifts the springs f ¹ over the shoulder a ¹ during the downward movement. :

The switch-off movement, which opens the contacts K , ■ is brought about by the described solution of the locks S ^ ¹ and Sp ² only by the pressure of the spring F ¹ and is accordingly instantaneous. This movement is limited by a second approach a ^z on the switching element, which lies against the fixed springs f ^1.

After switching off the released pressure pin is pushed so far up by the spring F ² that the approach a ² is above the locking springs f ² .

In FIGS. 3 and 4, the switched-on position is expressed at the moment when, for the purpose of switching off, the pressure pin has already been moved down so far that the approach a ² becomes visible.
Embodiment 2. In the push-button switching device shown in FIGS. 5 to 7, the locking Sp ^{2 is} effected by the springs f ² firmly connected to the pressure pin D , which lie against the shoulder a of the switching element 5 and take it with them when the pressure pin is pressed down. In the switched-on position (Fig. 5), the blocking S ^ ¹ takes place by the same approach a, which now rests against the springs f ¹ attached to the housing. Both locks are released at the same time in that when the pressure pin D is pressed down further, the springs p connected to it move with their lower edges on the sliding surfaces g , whereby they and the springs Z " ^{1 spread} so far apart from one another (FIG. 7) that the approach α is free and the switching element 5 with the contacts K is snapped back by the pressure of the spring F ¹ .

Here, too, this momentary movement is limited by an approach and the pressure pin D is pressed so far upwards by its spring F ² that the springs f ^{2 are} again above the approach α and the next switching cycle is prepared.

The pressure pin D and the switching element S receive their guidance in this case by a tube R firmly connected to the housing, in which the springs F ¹ and F ² are located, but are made independent of each other by a partition located in the middle .

For the sake of clarity, the arrangement of the switching element S and the sliding surfaces g is shown in FIG. 8 on a larger scale.

In the described embodiments 1 and 2 (Fig. 3 to 8) must be switched off the pressure pin are pressed down deeper than when switching on; but this is not a general one Characteristics of the claimed innovation, but embodiments are conceivable in which the switch-off movement of the pressure pin is as long or shorter than the switch-on movement.

Claims (4)

Patent Claims: 1. Push button switch with only one push button, in which both switching on and switching off is done by depressing a push pin connected to the button, characterized in that when the push pin (D) is depressed for the purpose of switching off, the connection of the latter with the at the pressure pin longitudinally movable contact piece (S) is released and this is consequently snapped back into the switched-off position by spring force regardless of the will of the person switching off. 2. Push-button switch according to claim i, in which the holding of the switching element in the current short position is carried out by a lock which is released during the switching-off movement of the pressure pin, characterized in that the connection between the switching element (S) and pressure pin (D) during the switching-on movement a second blocking (Sp ² ) takes place, which is also released during the switch-off movement. 3. Push button switch according to claim 1 and 2, wherein the the switching element in the current short position holding blocking by fixed springs in connection with an approach to the switching element and the solution of the block by pushing it a pipe section takes place, thereby characterized in that the locking (Sp ' ² ) used to connect the pressure pin (D) to the switching element (S) is effected in the same way by an attachment (a ² ) on the pressure pin and its release by pushing a tube (R ² ) under ( Fig. 3 and 4). 4. Pushbutton switch according to claim ι "and 2, characterized in that both the serving for the connection of the pressure pin with the switching element (S) blocking (Sp ^2), as well as serving to hold the switching element (S) in the current closing position blocking (Sp ¹ ) is effected by a single approach (a) on the switching element in connection with springs (f ² ) attached to the pressure pin and springs (f ^l ) attached to the housing, and their solution is achieved by the springs (f ¹ ) attached to the pressure pin are inevitably spread by sliding surfaces (g) over the shoulder (a) and at the same time the springs (f ¹ ) attached to the housing lift off (Fig. 5 to 7). 1 sheet of drawings.