DE1515688A1 - Device for feedback of the movement and / or tightening position of the armature of an electromagnet - Google Patents

Description

« ^: Β '^; Frankfurt / M., October 22nd 1965

Dr. Expl.

E 15 P 14 M / Bu

!Company

Eichner Organization G.m.b.H.

Electronics and office machine factory

Prankfurt a./Main
Unterlindau 21-29

"Device for feedback of the movement and / or Tightening position of the armature of an electromagnet "

The invention relates to a device for feedback the position or movement of the armature of an electromagnet.

The armature bending of electromagnets is usually by a contact mechanically actuated by the armature, the closes or opens a circuit, reported. The contact is therefore always actuated when the armature is at its Has reached work position. Movement or displacement of the anchor due to other causes that are not generated by the electromagnet itself is at such an arrangement also indicated * An equivalent Signal can also be by photoelectric means or

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other devices, such as by a permanent magnetically operated protective gas contact generates v / earth.

The invented device is intended to indicate mib security, whether the reported movement or position of the armature is accompanied by an electrical excitation of the solenoid ".

The direction for the feedback of the movement and / or tightening position of the armature of an electromagnet is characterized according to the invention in that · that a soft iron pole connected to the armature of the electromagnet and arranged so that at least part of the magnetic The flux of the magnet goes through the Pole of the Vistula, and that at least part of the river passing through the pole at the one caused by the excitation of the magnet Armature movement is guided past a protective gas contact, actuating it. With such an arrangement .must-en all conditions for actuating the contact, namely armature movement or end position and electromagnet excitation, be fulfilled.

The soft iron pole and the other parts of the arrangement that take part in the build-up and breakdown of the magnetic fields can be designed according to the invention in such a way that the protective gas contact is only actuated when the magnetic field generated by the winding and a movement of the armature at the same time ; appear. The protective gas contact does not speak to one; certain position of the anchor, but only if the anchor is in motion.

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The invention is shown below at one in the drawing illustrated embodiment explained in more detail.

A protective gas contact 1 with the contact tongues 2 and 3 is into an insulating stuffing plate 4 designed as a printed circuit with conductor tracks that have been left standing accordingly soldered in at 5 and 6. The contact lies in one Cutout 7 in plate 4. The arrangement is used to report back the position of armature 9, which is extended at 8 A solenoid 10 for this excitation. The anchor extension 8 carries a soft iron pole 11. For the purpose of concentrating those emanating from the soft iron pole 11 Stray backfiuses on the contact tongue 3 or the contact tongues 3 and 4 is a plate 4 partially surrounding Bracket 12 is provided, the end 13 of which is located near the contact tongue 3.

When the electromagnet 10 is energized, the armature moves in the direction of arrow 14 and when the coil is de-energized in the opposite direction. In a certain position of the armature 9, which is to be reported by the Schnju £ gas contact 1, the pole 11 is so close to the contact point of the two tongues 2 and 3ν that the tongues are magnetized and close the contact between them, provided that the Pole actually also carries the magnetic flux originating from the coil 10. If the coil does not carry an excitation current, the contact will not respond even if the pole 11 is in the position required for the response. On the other hand, this contact (back contact avoidance) also does not close, but if the sink zwai * j energized the armature does not 'M for the magnetic influence of the Schutzgaskoätaii Tess ^ i

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has the required position. Precondition for addressing of the contact -is the correct position of the pole 11, i.e. the armature 9 and the excitation of the coil 10.

Dynamic magnetic fields and magnetic forces also occur during armature movement. The fields change during the whole movement. This fact can be used according to the invention Feedback of the armature movement can be used. The appropriate shape for this use of the pole 11 and the remaining magnetically conductive or otherwise effective parts are expediently determined experimentally, because the most favorable shape depends largely on the overall arrangement.

Patent claims:

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Claims (2)

Patent claims: 1. Device for feedback of the movement and / or Tightening position of the armature of an electromagnet, thereby g e k e η η ζ ei c h η e t that a soft iron pole is connected to the armature of the electromagnet and is arranged so that at least a portion of the magnetic flux of the magnet passes through the soft iron pole goes, and that at least part of it goes through the pole-going flux when the armature movement at a protective gas contact is caused by the excitation of the magnet, pressing this is passed. 2. Device according to claim 1 for feedback of the armature movement, characterized in that the magnetically effective parts are arranged so that the inert gas contact only responds to the armature movement. mb; .. ■ ■ ..... ■■■ j 0985 0/024 Blank page