DE2013295A1 - tentwesen, Ost-Berlin WP139468 Electrical switch with magnetically controllable contacts - Google Patents

Description

Combine PA 370

VEB Lokomotivbau-Elektrotechnische Works by "Hans Beimler"

Hennigsdorf - DDE 20 13295

Electrical switch with magnetically controllable contacts.

The invention relates to an electrical switch with magnetically controllable contacts, preferably protective tube contacts, which are arranged axially parallel to a drive axle, and one rotating with the drive axle, formed from several permanent magnets lying next to one another in the direction of movement with poles of the same name Magnetic system that closes the protective tube contacts.

An electrical switch with magnetic is known controllable contacts, with the axially parallel to a "

Drive shaft protective tube contacts are arranged, and with the drive shaft one of two permanent magnets educated. Magnet system with permanent magnets in the direction of movement with poles of the same name next to each other, rotates,

However, this electrical switch has the disadvantage that the switching angle range of a protective tube contact is determined by the size of the permanent magnet and consequently cannot be made arbitrarily large «Another disadvantage is the relatively large spatial dimensions of the electrical switch and that through the weio outside

0 09848/1105 '~ 2-

BATH ORIGINAL

the axis rotating permanent magnet in addition to conditional large Moment of inertia, especially at high switching speeds is unfavorable.

In a further known electrical switch with magnetically controllable contacts is one with a drive shaft rotating magnet system composed of several permanent magnets in such a way that in the direction of movement of the Magnet system right and left on one pole of the middle one Permanent magnets each have an oppositely polarized permanent magnet is arranged.

However, such an arrangement has the additional disadvantage that the composite permanent magnets as a result the opposite fields change after a certain time demagnetize. Furthermore, the moment of inertia is due the larger masses of the one formed from several permanent magnets Magnet system ^ further enlarged.

The purpose of the invention, which concerns an electrical switch with magnetically controllable contacts, consists in the size of such an eiektrischen switch, with reduction of the moment of inertia of the rotating magnet system, and reduce the switching conditions to improve.

The invention is based on the object of developing an electrical switch with magnetically controllable contacts, preferably protective tube contacts, which, when the protective tube contact *} is arranged, is as small as possible Full rotation of the, Ma ^ noh ^ ystoma, with non-turachiodllch selectable one-way and one-way angles,

00984,) / MOS _BAD0R1Q , NAL

According to the invention the object is achieved in that between three poles of the same name on a drive axis Axially adjacent permanent magnets rotating around their magnet axis are designed as sector disks Pole plates are arranged, and that on the outer free poles of the permanent magnets over the diameter of the Permanent magnets protruding disks are arranged, and that on the disks a to the central axis of the sector disks formed pole sheets offset by 180 °, at a distance from the outer circumference of the permanent magnets in the longitudinal direction to the drive axis, an arcuate web is arranged.

The electrical switch can also be designed so that the P.olbleche designed as sector disks with several sectors, and that between the sectors the arcuate Bars are arranged »

There is still the possibility to choose the individual sector. ren of the pole plates designed as sector disks with perform different angular ranges.

The central position of the magnet system enables the construction of an electrical switching device with small spatial dimensions Dimensions and smallest possible moment of inertia of the rotating Magnet system. This is especially true at high levels Switching speeds that can be achieved with protective tube contacts are advantageous. Different selectable Allow switching on and off with the smallest switching hysteresis a versatile applicability of the electric switch.

The invention is to be explained in more detail below using an exemplary embodiment.

009848 / 110B

Show in the accompanying drawing;

Fig »1: an electrical switch with on a drive axle arranged permanent magnets, between which pole sheets are arranged, above this Arrangement is a magnetic short-circuiter, and axially parallel to the drive axis protective tube contacts are arranged;

FIG. 2: a side view according to FIG. 1;

Fig. 3 * is a side view of FIG. 1 with discs formed from sectors with multiple sectors PoI-blechen _o

According to FIGS. 1 and 2, two-pole axially magnetized permanent magnets 3 »3a; 3a ¹ arranged in such a way that each pole of the central permanent magnet has a pole of the same name in each case one of the two outer permanent magnets 3a; 3a ^f . Between the permanent magnets 3; 3a or 3; 3a ^f are arranged as sector disks pole plates 4 which have an angular range <^. At the outer free poles of the permanent magnets 3a; 3a ¹ are arranged on the drive shaft 2 disks 5, the diameter of which is greater than that of the permanent magnets 3, which are preferably designed in the same shape; 3a; 3a ¹ . On the disks 5 is an arcuate web 6 in the longitudinal direction to the drive shaft 2, at a distance a from the outer circumference of the permanent magnets 3 »3a; 3a ^f to the central axis of the sector-shaped pole sheets offset by 180 °, arranged. Around the drive shaft 2 arranged axially parallel, there are reed relays \ with magnetizable contact springs 1a; 1b. An electrical switch with a magnet system designed in this way, in which pole plates are used to transmit the magnetic flux to the protective tube contacts, enables a considerable reduction in the switching hysteresis. The stray fields of the middle permanent magnet 3 and the two outer permanent magnets 3a; 3a ¹ are directed in opposite directions and are superimposed so that at a certain distance from the drive axis, which is preferably about

00984a / 1105

corresponds to the distance of the treasure ring contacts Λ_ from the drive axis, a field-free space is created. Due to the additional arrangement of a magnetic short-circuiter, consisting of the disks 5 and the arched web 6, over the permanent magnets 3} 3a; 3a- the resulting stray fields are screened or "short-circuited and at the same time an" amplification of the magnetic flux over the pole pieces Tierreich b. Sheets Λ magnetic field formed in the immediate vicinity of the same is effective _o

In Pig. 3, the arrangement shown pole plates are divided into ^L V drei'Sektoren, wherein the individual sectors unberschiedliche angle ranges ^ have. 'Between the secbors are at a distance a from the permanent magnets 3 »3a; 3a ¹ in the longitudinal direction to the drive shaft 2, arc-shaped webs 6 resting on the disks 5, are arranged. Such a design of the pole plates 4 · enables the magnetizable contact springs Ta to respond several times; Tb of the push tube contact 1_, with switch-on areas of different sizes, during one revolution of the magnet system »

Ü (J Π 8 4 R / I I 0 5

Claims (1)

P ate η construction.> Ρ r \: .. ο h · ^Ώ : Electrical switch with magnetically controllable contacts, preferably protective tube clocks, which are arranged axially parallel to a drive axis, and a magnet system rotating with the drive axis and formed from several permanent magnets lying next to one another in the direction of movement with poles of the same name, which closes the protective tube contacts,
characterized in that between άυί with poles of the same name on a drive axis (2) adjacent axially magnetize, rotating about their magnetic axis
Permanent magnets (3; 3a; 3a ¹ ), pole plates (4) designed as sector disks, are arranged: mcl that the permanent magnet η (3a; 3a ¹ ) on the outer free poles
beyond the diameter of the permanent magnets (3; 3a; 3a ¹ ) protruding disks (5) are arranged, and that on dan disks (5) a to the central axis of the sector disks designed as pole plates (4) offset by 180 °, in one
Distance (a) from the outer circumference of the permanent magnets (3; ') i \; 3a ¹ ) in the longitudinal direction to the drive axis (2), an arcuate web (6) is arranged. Electrical switch according to claim 1, characterized in that that the pole plates (4 ·) as champagne disks with several Sectors formed, and that between the sectors the arcuate web3 (6) are arranged. 3 "Electrical switch according to claim 2, by ^ eke net, dixL · the individual sectors of the ¹ Us sector disks
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