DE1141000B - Electrical switch operated by permanent magnets - Google Patents

Description

Electrical switch operated by permanent magnets is the subject of the Invention is an electrical switch in which by moving the magnetic fields two permanent magnets arranged one above the other and separated by a non-magnetic tube momentary switching processes are triggered.

There are electrical switches known for a long time, in which by Effect of a permanent magnet on a switching element made of magnetic material With the help of springs, instantaneous switching processes can be triggered. These switches have the disadvantage that they are due to the release of the spring force, by breaking the Springs or aging can become unreliable. Besides, the are moving Switching elements subject to wear. The switching mechanism must be particularly important Switches for larger capacities can be complicated and take up a lot of space. she are relatively expensive.

These disadvantages are in the new switch, the subject of the invention is avoided.

The momentary interruption and closure of the stream is at this Switch solved in an amazingly simple way by using the Natural law of the repulsive forces of two magnets at their poles of the same name.

If you bring a permanent magnet of cylindrical shape into a non-magnetic one Tube in which he can move freely up and down and slides over the Tube a ring-shaped permanent magnet, the north and south poles of which are on opposite sides The ends of its longitudinal axis are located like the north and south poles of the one in the pipe Magnet, the inner magnet is drawn into the cavity of the outer magnet and when the external magnet is moved it inevitably follows all its movements.

However, if the two magnets are arranged in such a way that their names are identical Poles are at the same ends of their longitudinal axes, the inner magnet remains always outside the cavity of the ring magnet and is the same when moving pushed ahead of the same at some distance.

These phenomena are due to those that have been known since ancient times Laws of attraction and repulsion of magnetic poles of unequal or equal polarity.

But if you limit the movement of the inner magnet down by a stop and moves the outer magnet down over the inner one Magnet away, so the pressure that has to be applied increases around the outside To push magnets over the inner magnet, the more the two are closer together Approach unlike poles of the two magnets and until they are in one plane.

However, at the moment when the two magnetic fields intersect, the inner magnet is suddenly thrown upwards like a bullet, because the repulsive Forces of the two magnetic fields now take effect in the opposite direction.

According to the invention, the movable contact piece of the protective tube contact is now attached to the face of a cylindrical permanent magnet, and over the protective tube an annular permanent magnet arranged displaceably with a polarity such that the facing surfaces of the annular and the cylindrical permanent magnet have unequal polarity.

An embodiment of the electric operated by permanent magnets Switch is shown in FIG.

In a glass tube a, which is expediently filled with an inactive gas is e.g. B. hydrogen, the two contacts e and d are melted at the lower end.

The cylindrical permanent magnet is located inside the glass tube a c, at the lower end of which the contact plate f is attached. The magnet c is in its movement inside the glass tube a downwards through the two contacts e and d limited, upwards by the limit pin g.

The ring magnet b is arranged displaceably above the glass tube a. This ring magnet b is limited in its movement on the glass tube a upwards by the stop i and downwards by the stop h. Both stops are appropriately set up adjustable.

Both permanent magnets b and c are arranged to each other that their facing surfaces have unequal polarity. If you move the ring magnet b up to the stop i, the cylindrical magnet c is suddenly after is thrown down and rests on the two contacts e and d under pressure. Of the The circuit is closed, as shown in FIG. 1.

If the magnet b is now moved down to the stop iz, so the cylindrical magnet c snaps up to the limit pin g, where it is held until the ring magnet b is moved back down. The circuit is interrupted as shown in FIG.

Fig. 3 shows an embodiment in which both the lower and at the upper end of the glass tube a two contacts are melted, whereby one receives a toggle switch.

Fig. 4 shows an embodiment in which the limit pin g is adjustable.

In the case of the switch shown in FIG. 5, there is only one contact at the bottom d melted down and another contact e at the upper end, the one with the contact plate f is in a conductive connection.

Claims (4)

PATENT CLAIMS: 1. Protective tube contact controlled by permanent magnets, characterized in that the movable contact piece (f) is attached to the end face of a cylindrical permanent magnet (c), and that via - the protective tube (a) an annular permanent magnet (b) is slidably arranged with a polarity such that the mutually facing surfaces of the annular and the cylindrical permanent magnet have unequal polarity. 2. Electrical switch according to claim 1, characterized in that in addition to the contact (e, d) attached to the lower end of the protective tube (a), another (g1, g2) are provided at the upper end of the tube. 3. Electrical switch according to claim 1, characterized in that a Stop pin (g) at the upper end of the tube (a) is adjustable. 4th Electrical switch according to Claim 1, characterized in that at the lower end Only one contact piece (d) is attached to the protective tube and a second (e) is attached to the upper end, which is in conductive connection with the contact plate (f). Into consideration Drawn pamphlets: French patent specification No. 1127 548.