DE19650490A1

DE19650490A1 - Holding or lifting magnet with reduction, or switch-off of holding force

Info

Publication number: DE19650490A1
Application number: DE1996150490
Authority: DE
Inventors: Bruno Gruber
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-05
Filing date: 1996-12-05
Publication date: 1998-06-10

Abstract

The ferromagnetic bar (2) has a non-magnetic or weakly-magnetic zone (4) in its middle region in transverse direction. The two magnets (1) are held together by a frame (5), serving also as a displaceable handle (9). Pref. a magnet is displaceably fitted between two stationary ferromagnetic bars. Typically the non- or weakly magnetic zone extends up to the handle and consists of a non-magnetic material, such as non-ferrous metal or plastics, while it is soldered, screwed, or glued to the ferromagnetic bar. The zone may be formed by a series of transverse bores, or slots.

Description

Die Erfindung betrifft einen Haftmagnet bei dem die Haftkraft verringert oder abgeschaltet werden kann, damit dieser von einem anhaftenden Teil oder von einer Metallplatte mit geringem Kraftaufwand wieder getrennt werden kann.The invention relates to a holding magnet in which the holding force is reduced or can be switched off so that this is from an adherent part or separated from a metal plate with little effort can be.

Aufgabe der Erfindung ist es, einen Haft- oder Hebemagneten zu schaffen, der einerseits die volle Haftkraft aufweist, und andererseits sich von Hand mit geringer Abzugskraft wieder lösen läßt. Auch soll der Haft magnet mit demselben Handgriff durch Andrücken befestigt und durch Weg ziehen wieder gelöst werden können.The object of the invention is to provide a holding or lifting magnet, which on the one hand has full adhesive force and on the other hand is different from Let the hand release with little pulling force. Also detention magnet with the same handle attached by pressing and by way pull can be solved again.

Erfindungsgemäß wird die Aufgabe entsprechend dem Patentanspruch 1 gelöst.According to the invention the object is achieved according to claim 1.

Die Zeichnung zeigt den erfindungsgemäßen Haftmagnet, mit zwei Mag neten 1, der ferromagnetischen Stange 2, mit der Befestigungsbohrung 3 und dem Handgriff 9, die nicht- oder schwachmagnetische Zone 4, den auch als Betätigungsgriff dienenden Halterahmen 5 für die Magneten 1, die Magnetbefestigung 6 mit den Haltezapfen 7 die in einer Bohrung 8 des Halterahmens 5 lose gehalten werden, und eine der beiden gegenüber liegenden Griffplatten 11.The drawing shows the holding magnet according to the invention, with two mag nets 1 , the ferromagnetic rod 2 , with the mounting hole 3 and the handle 9 , the non- or weakly magnetic zone 4 , the holding frame 5 also serving as an actuating handle for the magnets 1 , the magnet attachment 6 with the holding pins 7, which are held loosely in a bore 8 of the holding frame 5 , and one of the two opposite handle plates 11 .

In der Arbeitsstellung besitzt der Haftmagnet volle Haftkraft im Bereich der Ebene 10.In the working position, the holding magnet has full holding force in the area of level 10 .

In der Ruhestellung ist der Halterahmen 5 entlang der ferromagnetischen Stange 2 über die nicht- oder schwachmagnetische Zone 4 hinaus zurück gezogen, und die Haftkraft auf der Ebene 10 ist wesentlich reduziert.In the rest position, the holding frame 5 is pulled back along the ferromagnetic rod 2 beyond the non- or weakly magnetic zone 4 , and the adhesive force on the plane 10 is significantly reduced.

Das Abheben des Haftmagneten von einem festgehaltenen Gegenstand oder einer ferromagnetischen Platte geschieht durch Festhalten und Hoch ziehen der beiden gegenüberliegenden Oberflächen 12, die als ver schiebbarer Handhabungsgriff dienen.The lifting of the holding magnet from a held object or a ferromagnetic plate is done by holding and pulling up the two opposite surfaces 12 , which serve as a slidable handle.

Soll ein Gegenstand hochgehoben werden, so dienen dafür die Befesti gungsbohrung 3, der Handgriff 9, oder die beiden gegenüberliegenden Griffplatten 11, die durch Zusammendrücken mit den Fingern die beiden Magneten 1 fest an die ferromagnetische Stange 2 pressen.If an object is to be lifted, the fastening bore 3 , the handle 9 , or the two opposite handle plates 11 serve to press the two magnets 1 firmly against the ferromagnetic rod 2 by pressing with the fingers.

Claims

1. Holding magnet with device for reducing or switching off the adhesive force, characterized in that on both sides of a longitudinally slidable ferromagnetic rod ( 2 ) magnets ( 1 ) are introduced that the ferromagnetic rod in the central region in the transverse direction a non-magnetic or weakly magnetic narrow zone ( 4 ), and that both magnets are held together by a frame ( 5 ) which also serves as a slidable handle.

2. Holding magnet according to claim 1, characterized in that a magnet ( 1 ) between 2 fixed ferromagnetic rods ( 2 ) is attached bar.

3. Holding magnet according to claim 1 and 2, characterized in that the non- or weakly magnetic zone ( 4 ) extends to the handle ( 9 ), and consists of a non-magnetic material such as non-ferrous metal or plastic.

4. Holding magnet according to claim 1 to 2, characterized in that the non- or weakly magnetic zone ( 4 ) consists of plastic or non-ferrous metal, and is soldered, screwed or glued to the ferromagnetic rod ( 2 ).

5. Holding magnet according to claim 1 and 2, characterized in that the non- or weakly magnetic zone ( 4 ) is formed from a series of transverse bores or slots.

6. Holding magnet according to claim 1 to 5, characterized in that the frame ( 5 ) has the shape of a cap closed at the top.

7. Holding magnet according to claim 1 to 6, characterized in that the holding pins ( 7 ) protrude beyond the holding frame ( 5 ) and are firmly connected to the handle plates ( 11 ).

8. Holding magnet according to claim 1 to 7, characterized in that the holding frame ( 5 ) has an edge length of 10 to 50 mm.

9. Holding magnet according to claim 1 to 8, characterized in that the ferromagnetic rod ( 2 ) with a handle ( 9 ), a Boh tion ( 3 ) or a hook is provided.

10. Holding magnet according to claim 1 to 6 and 9, characterized in that the ferromagnetic rod is round, and has an annular magnet ( 1 ).