DE19714636C2 - Actuator for safety position switch - Google Patents

Description

The invention relates to an actuator according to the preamble of Claim 1.

An actuator for a safety position switch is, for example known from DE 295 04 673 U1. He is flexible in movement where through you with him a game of movement or warping of the door or Can compensate hood. To ensure the function, the mounting distance to the associated drive head is relatively ge are strictly observed, otherwise there is a risk that the loading does not intervene correctly if the distance is too large or strongly abuts at a short distance.

Doors whose play fluctuates more than normal Play in the lock, a door wake can be locked Position can not be caught. One from DE 295 10 071 U1 disclosed actuator, which is provided with springs, solves this Not a problem either.

DE 295 16 230 U1 is a generic actuator for security posi tion switch known with a key element that a si Safety-relevant functional state of a machine or system monitors and / or ver access to dangerous areas prevents the actuator from a protective cover or egg nem associated frame is mounted so that it when Closing the protective cover into a key in a drive head of the Si attached to the frame or protective cover engages safety position switch and thus a switching and previously activated an unlock mechanism if necessary, being between the key element and the protective cover or an associated frame at least one door bumper damping spring is arranged in the direction of movement and the damping spring in a tunnel-like receptacle of a fastening element,  that on the protective cover or the associated is attachable to the frame, is embedded, the key selelement is displaceable in the direction of movement such that a door overrun can be caught in the locked position can.

From DE 35 44 578 A1 and GB 16 03 606 it is for known between a key element and a protection cover a damping spring in the direction of movement in one to arrange tunnel-like recording.

The object of the invention is therefore to provide an actuator according to the The preamble of claim 1 to create the explanat solves the problem in a simple manner.

The object of the invention is by the characterizing note male of claim 1 solved while in the subclaims particularly advantageous developments of the invention are drawn.

Based on the drawing, in which an embodiment Darge represents, the invention, further refinements and Improvements of the invention and other advantages be closer are written and explained.  

It shows:

Fig. 1 is an exploded view of a first embodiment of the actuator,

Fig. 2 is an exploded view of another variant of the first embodiment of the actuator,

Fig. 3 is an illustration of the actuator from above with presetting.

The actuator 1 shown in the figures is used for safety position switches. It is provided with a key element 2 , which monitors a safety-relevant functional state of a machine or system and / or prevents access to dangerous areas, the actuator 1 being mounted on a protective cover or an associated frame in such a way that when the protective cover is closed it is key-like engages a drive head of the safety position switch attached to the frame or protective cover and thus activates a switching mechanism and, before that, an unlocking mechanism.

Between the key element 2 and the protective cover, not shown, or an associated one. At least one door shock-absorbing damping spring 3 is arranged in the direction of movement B, the key element 2 being displaceable in the direction of movement in such a way that a door wake can be absorbed in the locked position.

In an embodiment with different variants, which is shown in the first two figures, a damping spring 3 is embedded in a tunnel-like receptacle 4 of a fastening element 5 for fastening the protective cover or the associated frame.

The key element 2 is mounted the fastening element 5 in a slot-shaped recess 6, wherein the fastening element 5 is above and / or below each other in the area of the recess 6 and is provided right and left of the damper spring 3 arranged in the direction of long holes. 7 Pins 8 are inserted into the elongated holes and are also inserted into holes 9 of the key element 2 .

The width of the elongated holes 7 and / or the holes 9 are larger than the pins 8 , so that the pins 8 are also mounted so that they can move laterally. The recess 6 is provided with a side play, whereby the key element 2 can be rotated by a limited angle under spring action, as shown in FIG. 3.

The holes 9 can also be designed as elongated holes.

The fastening element 5 is provided on the recess side with bores 10 or threaded bores extending up to the elongated holes.

A grub screw is inserted into each of the threaded bores, whereby it can press the pins 8 against the spring force in such a way that a presetting or lateral rotation of the key element 2 is achieved, as can be seen in FIG. 3.

In Fig. 1 the actuator shown is suitable for a vertical and in Fig. 2 for a horizontal attachment.

According to the embodiment shown in FIGS. 1 to 3, the aforementioned pins 8 are used, which have an integrally formed head 12 at one end and an annular groove 13 for a locking ring 14 at the other end.

The fastening element 5 can be provided with vertically or horizontally arranged fastening holes 15 and rubber-like grommets 16 fastened thereon, which brings about additional play or damping.

List of reference numbers

1

actuator

2

key element

3

damping spring

4

admission

5

fastener

6

recess

7

slots

8th

pencils

9

holes

10

drilling

11

screw

12

head

13

ring groove

14

circlip

15

mounting holes

16

spouts

Claims (6)

1. Actuator ( 1 ) for safety position switch with a key element ( 2 ) that monitors a safety-relevant functional state of a machine or system and / or prevents access to dangerous areas, the actuator ( 1 ) being mounted on a protective cover or an associated frame in this way is that when the protective cover is closed, it engages in a drive head of the safety position switch fastened to the frame or the protective cover and thus activates a switching mechanism and, if appropriate, a locking mechanism beforehand, being between the key element ( 2 ) and the protective cover or an associated frame is arranged in the movement direction at least one türstoßaufnehmende damping spring (3) and the damping spring (3) is in a tunnel-like recess (4) actuating element of a buildin (5) which can be fastened to the protective cover or the associated frame is embedded, Where when the key element ( 2 ) is slidable in the direction of movement in such a way that a door wake can be caught in the locked position, characterized in that the key element ( 2 ) is mounted in a slot-shaped recess ( 6 ) of the fastening element ( 5 ) that the fastening element ( 5 ) with respect to the plane running through the recess ( 6 ) on the upper and / or lower side in the region of the recess ( 6 ) and to the right and left of the damping spring ( 3 ) with elongated holes ( 7 ) arranged in the direction of movement (B) is provided, are inserted into the pins ( 8 ) perpendicular to the plane mentioned, which are also used in holes ( 9 ) of the key element ( 2 ), the elongated holes ( 7 ) and / or the holes ( 9 ) being dimensioned in this way , the pins ( 8 ) are movably mounted and the recess ( 6 ) is provided with a side play such that the key element ( 2 ) by a limited angle under spring action g is rotatable. 2. Actuator according to the preceding claim, characterized in that the holes ( 9 ) are designed as elongated holes. 3. Actuator according to one of the preceding claims, characterized in that the fastening element ( 5 ) on the recess side with up to the elongated holes ( 7 ) through holes ( 10 ) is provided, in each of which a screw ( 11 ) can be used, so that the pins ( 8 ) are pressed against the spring force in such a way that a presetting or lateral rotation of the key element ( 2 ) is sufficient. 4. Actuator according to the preceding claim, characterized in that the screw ( 11 ) is a grub screw. 5. Actuator according to one of the preceding claims, characterized in that the pins ( 8 ) have at one end a molded head ( 12 ) and at the other end an annular groove ( 13 ) for a locking ring ( 14 ). 6. Actuator according to one of the preceding claims, characterized in that the fastening element ( 5 ) has parallel or perpendicular to the direction of movement fastening holes ( 15 ) with rubber-like grommets ( 16 ).