DE19517622C2 - Push button switch - Google Patents

Description

The invention relates to a push button switch according to the preamble of claim 1.

From DE 30 43 133 A1 a push button switch is known, the spring-loaded Push button has a plunger, which hits two inclined planes when actuated. This Levels are located on a rocker switch that is pivoted when actuated. in the In contrast, the inclined planes of the present invention are oblique to each other offset and separated by a partition. In addition, the invention Slider on which the levels are linearly displaced. Compared to the known Rocker contact system is the contacting of the present invention by a Friction contact system.

The object of the invention is to develop a push button switch, which is used both as an ON / OFF switch and as a changeover switch bar, with the actuation button in its after each actuation Initial position resets. This object is achieved according to the invention solved by the features specified in the characterizing part of claim 1. Advantageous embodiments of the invention are in the subclaims specified.

The invention is based on one in the drawing figures illustrated embodiment explained in more detail.

Show it:

Figure 1 is a central section through the push buttons switch according to the invention.

FIG. 2 shows a top view according to FIG. 1, but without an actuation button and return spring;

Fig. 3 is a section along the line AB of Fig. 2;

Fig. 4 is a view of the pushbutton switch according to the line CD in FIG. 2.

The push button switch shown in the drawing figures 1 to 4 consists of a housing 1 in which an actuating button 3 with a tongue 3 'acts against the restoring force of a spring 4 , which resets both the actuating button 3 and the contacting of the switching contact 5 with the Fixed contacts 6 , 7 and 7 'is used. In addition, a slide 2 is arranged in the housing, which engages with a pin 2 "in the fork 5 'of a switch contact 5. The fixed contacts 6 , 7 and 7 ' in the housing 1 become ON / OFF or alternate switching of the switch contact depending on the type of switching 5 bridged, which is controlled by the slide 2 .

For this purpose, the slide has two inclined planes ( 2 ', 2 ''') which are separated by a partition 2 "" and offset at an angle to one another. As can be seen from FIGS. 1 and 2, but in particular from FIG. 3, the switching contact 5 has an angled portion 5 'opposite its fork 5 '. With this angled portion, the switching contact 5 lies in one of two recesses 8 , which the switch contact is prevented from inadvertently bridging the push-button contacts 6 , 7 or 7 'when the push-button switch is shaken. An elevation 8 ' is placed between the two depressions 8 , which must always be overcome by the switch contact 5 when a switch trigger occurs .

The push button switch now works as follows:

When the actuation button 3 is depressed, the tongue 3 'bumps into an inclined plane 2 ' or 2 '''of the slide 2, whereupon the slide is placed in a switch position, the elastic tongue 3 ' being deflected by the partition 2 "". The pin 2 ″ is in engagement with the switching contact 5 via the fork 5 ′, which in turn is rotatable about the housing pin 1 ′.

Due to the sliding movement and the associated rotary movement of the switching contact 5 , the fixed contacts 6 and 7 are bridged for the ON / OFF switching or the contacts 6 , 7 and 7 'for the two-way switching. In this sequence of movements, the angled portion 5 of the switching contact 5 is placed from one recess 8 via an elevation 8 'into the other recess 8 , as a result of which the corresponding switching position is fixed. After actuation, the tongue 3 'automatically rests and is above the other inclined plane ( 2 ' or 2 ''').

Reference list

1

- Casing

1

'- Housing pin

2nd

- slider

2nd

'- inclined plane

2nd

"- cones

2nd

'''- inclined plane

2nd

"" - Partition wall

3rd

Button

3rd

' - Tongue

4th

- return spring

5

- switching contact

5

' - Fork

5

"- Figure bending

6

- Contact

7

- Contact

7

' - Contact

8th

- Deepening

8th

- increase

Claims (5)

1. Pushbutton switch with actuation button and return spring, in a housing, to obtain an ON / OFF or changeover switch, characterized in that the actuation button ( 3 ) in addition to a return spring ( 4 ) also has a tongue ( 3 '), with which it in Actuating case alternately on one of two inclined planes ( 2 ', 2 ''') of a slide ( 2 ), which are offset from one another and separated by a partition ( 2 "") arranged at an angle to the direction of displacement of the slide, and that thereupon one Sliding movement of the slide ( 2 ) takes place in a switching position, a pin ( 2 ") formed on the slide ( 2 ) engaging in a fork ( 5 ') of a switching contact ( 5 ) which is rotatable about a housing pin ( 1 ') and the fixed contacts ( 6 , 7 ) in the housing ( 1 ) for an ON / OFF circuit or the fixed contacts ( 6 , 7 , 7 ') bridged for a two-way circuit. 2. Push button switch according to claim 1, characterized in that the return spring 4 serves to retrieve the actuation button 3 , and for the switching contact 5 generates the necessary pressure on the fixed contacts ( 6 , 7 , 7 '). 3. Push button switch according to claim 1 and 2, characterized in that when the actuating button ( 3 ) is pressed again, the tongue ( 3 ') is placed on a second inclined plane ( 2 '''), as a result of which the slide ( 2 ) is in its first layer is put back. 4. Push button switch according to claim 1 to 3, characterized in that to avoid incorrect bridging of the fixed contacts ( 6 , 7 , 7 ') of the switching contact ( 5 ) has an angled portion ( 5 "), making it in the rest position in one of two Wells ( 8 ) lies. 5. Push-button switch according to claim 4, characterized in that the switching contact ( 5 ) leaves one depression ( 8 ) when actuated and moves via an elevation ( 8 ') into the other depression ( 8 ).