DE2019415A1 - Magnetic tongue contact - Google Patents

Description

PHN. DipL-Ing. F..J. COPPER MAPW

dJo / ¥ JM <

Applicant: _{ΝΛ r: i |; p} . _G; _. _fa

- 4049

Magnetic tongue contact.

The invention relates to a magnetic tongue contact with two contact tongues and with at least one Permanent magnet, the field of which keeps the contact tongues in the closed state,.

In the known magnetic tongue contacts of the type mentioned at the beginning, the permanent magnet is in the vicinity of the Contact tongues attached. When the contact blades are in a hermetically sealed envelope are housed, lies the Permanent magnet outside the cover «A disadvantage of pincer contact with a permanent magnet placed near the contact tongues is that part of the flow through that Kontaktzungsn runs, while a significant part of the same runs through the Lufit {and therefore not to © Fes thai-

009846/1599

PHN. hok9. «. 2 -

ten of the contact tongues in the closed state contributes. The invention aims at the disadvantage mentioned

significantly reduce »

To this end, the invention has the feature that the permanent magnet is on the one facing the other contact tongue Side of one of the contact tongues near the overlap area of the two Kontaktsungen is arranged, where di © Polarization direction of the permanent magnet transversely to the longitudinal direction of the contact tongues and parallel to their direction of movement runs and that a significant part of the flux of the permanent magnet through the free. End of the other contact tongue mentioned above.

Since at least one of the contact tongues on the mentioned Way with a transverse to the longitudinal direction of the contact tongues polarized permanent magnet is provided, only a relatively small part of the flux of the permanent magnet runs only through the air, so that it is less powerful and fewer large dating magnets can be used.

Magnetic Zrasgenkoixtakte of the type mentioned at the beginning are effective as a working contact or rutie contact, depending on the strength of the permanent magnet.

Bei de! "Is an execution form as a working contact the strength of the Bauei * iaagsaeü; s not sufficient to

% wh. ± ltema3am <3 of an externally generated by the desa oiTfeaesi state iai d @ si closed 'Znatand su ΐ ⁾ ®κ · ©? ί, _!? - atoos ¹ si © is enough to do this by sms, the eirnsal im

be £ iE2dlM.efe © si Kontaktsuassgoa oiine Ztihilfe-

PHN.

would take an externally generated magnetic flux to keep it in the closed state. The interruption one time Established connection, which is only available through the field of the Permanent magnet is maintained, is done by applying an externally generated magnetic flux, the direction of which at the contact point corresponds to the flow of the permanent magnet at the contact point opposite and whose size is at least equal to that of the flux of the permanent magnet. Both with one of an excitation coil as an external flux coming from a permanent magnet, it can happen that the to interrupt the The connection required 'flow has been exceeded to such an extent becomes that without counterinas samen after the interruption of the contact die. Contacts close again or that even the contact remains closed and is not even briefly interrupted.

In the embodiment as a normally closed contact is the Sufficient strength of the permanent magnet without the aid of a externally generated magnetic flux to lead the contact tongues from the open to the closed state. The interruption of the closed contact is made by applying an externally generated magnetic flux, whose Direction at the contact point to the flux of the permanent magnet opposite to the contact point and at least its size that of the flux of the permanent magnet is equal. Aubh in the embodiment As a normally closed contact, it can easily happen that the flow required for interruption is exceeded to the extent that, without countermeasures, after the interruption

009846/1599

if the contact breaks, the contacts close again or the contact even remains in the closed state «

An advantageous embodiment of the magnetic 2-tongue contact according to the invention is characterized in that in the case of a magnetic flux generated on the outside and running through the contact connections in series, "its direction at the contact point is opposite to the flux of the permanent magnet or the permanent magnet and its value is such that the difference between. two mentioned streams can cause the contact tongues from the open state to the closed state ,, which adjoins the permanent magnet on part of the clock K tongue is unambiguously magnetically saturated.

The invention is explained in more detail with reference to the drawing. Show it:

Fig. 1 schematically on a greatly enlarged scale an advantageous embodiment of a magnetic tongue contact according to the invention, wherein one of the contact tongues is provided with a permanent magnet;

Fig. 2 schematically 'a further advantageous

Execution of a magnetic tongue contact according to the Invention, wherein both contact tongues are provided with a permanent magnet.

The illustrated in Fig. 1 magnetic tongue contact 1 contains two in an airtight sealed Sheath housed, mutually partially overlapping contact tongues 5 and 7 made of magnetizable material “Die

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The contact tongue 5 is provided with a cylindrical magnet 9 which is attached to the side of the contact tongue 5 facing the contact tongue 7, near the free end of the 'contact tongue 7'. The dimension of the permanent magnet 9 in the direction transverse to the contact tongue 5 (perpendicular to the plane of the drawing) is equal to the width of the contact tongue 5 · It should be noted that the aforementioned transverse dimension of the permanent magnet may be than the width of the contact tongue also great. The permanent magnet 9 is arranged at such a distance from the free end of the contact tongue 7 that a substantial part of the flux of the permanent magnet 9 runs through the mentioned free end. The direction of polarization of the permanent magnet 9 is transverse to the longitudinal direction of the contact tongues 5 and 7 and parallel to the direction of movement of the contact tongues, wherein in the case shown (the reverse is also possible) the magnetic south pole near the part of the permanent magnet 9 and adjacent to the contact tongue 5 the magnetic north pole are close to the part of the permanent magnet 9 opposite the first-mentioned part. The magnetic field lines of the permanent magnet 9 essentially have the course indicated in FIG. The stasimeside from the permanent magnet 9 flow in the contact opening is not sufficient, the con ~ taktzungexx 5 and 7 without the contribution of one of a the sleeve 3 surrounding the excitation coil 11 aiassesnseitig generated flow from the in Zeichnimg: specified open state ± n zn the geschlosseneäi state lead, but he is hisireicheiad.gross, once closed the »Hosstaktsramgen-

0098 46/1599 bad ORIGINAL

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5 and 7 i "to maintain this state without the contribution of a © 11 flux generated by the Erregerspul so that the tongue contact 1 forms a working contract" the transfer of the contact tongues 5 and 7 in the closed state by means .One of the exciter coil 11 produced flow in the direction P (see Figure _e 1) whose direction is present at the site of -between the contact tongues 5 and 7 contact 8 £ 13 is equal to the direction of already existing at this point flow is fxiusig of the permanent magnet 9 "If the Erre "supply through the coil 11 is removed ₉ remain the tongues 5 and 7 ^{in the} closed state _s inter alia, as said, the permanent magnet 9 sufficiently strong" is raa the contact tongues in the closed state to included the interruption of the maintained only by the Bafasrraagnet 9 contact success -e by means of a flow generated by the exciter spial © 1 t with the direction Q (see Fig. ₀ i) _e

In the contact tongue 5 two zones 15 and 17 can be used by the permanent magnet 9 i * i the Rieh = · t'tiiiig-si! A bsw, B premagnetized s ± Hd _o The premagnetization of the Έοάθμ. 15 taiid 1-7 becomes according to the direction of one of the two contact tongues! 5 and 7 amplifies in series continuous mag3ie ~ tables flow or geschwä "CHT ₉ of the B ₀ dtarcfe a current through the coil 11 or by äusssre 'means S ₀ © i sow;..! I s attached DSIR Hala © the Kosataktssangan ( not dai-gasteil-

aitssa t'7ä.3rd.o by eiiaera. outside ear— Flisss isa dov RicSattasag P ₉ d © r daa xn d @ r KontaktSff-S x? i "8sas & OQ Data © roag3ffl © ts f) reinforced" is "

2018415

PHN,

the bias in zone 17 is strengthened and the bias in zone 15 is weakened in the first instance. In the case of a flow in the direction Q which is opposite to the direction P, the reverse is the case. Furthermore, in the case of the tongue contact according to FIG. 1, by suitable selection of the strength of the permanent magnet 9, the premagnetization of the zone 17 is such that with a flux generated on the outside in the direction P, which leads the contact tongues 5 and 7 into the closed state (further below Called work flow) the zone 17 is not yet saturated, while the premagnetization of the zone 15 is such that in the case of an externally generated flux in the direction Q _f , it is necessary to transfer the contact tongues 5 and 7 from the closed state to the open state ( below called idle flow), zone 15 becomes saturated. When the externally generated flux that runs through the contact tongues in series and which is directed in the opposite direction to the flux of the permanent magnet at the contact point, has such a value that the difference between the two mentioned flows can lead the contact tongues from the open to the closed state zone 15 is therefore unequivocally saturation "Since the size of the part of the total flow generated on the outside, which runs through the contact tongues 5 and 7 in series as a rest flow or working flow (the remaining part runs through an airway), is caused by the zone which is the strongest pre-magnetized and thus forms the highest magnetic resistance, the contact tongues can

009848/1599

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5 and 7 in series running through rest flux in the direction Q even if it exceeds the external @@ itig zu @ TZ & ugend & n total magnetic flux relatively far «due to the saturation of zone 15 does not reach such a high» value that after the interruption of the contact again The end occurs, during which the contact tongues 5 and 7 pass through in series in the direction P, since the zone 17 is not yet saturated, is always large enough to close the contact On the contact tongue S wnd through the premagnetization of the zones 15 and 17 there is a magnetic tongue contact, the dimensions of which do not exceed those of the usual tongue contacts, while the circuit only occurs after an interruption with a relatively high flux generated on the outside.

If the magnetic tongue contact 1 as a normally closed contact is formed, the same, aforementioned result is of course achieved.

It should be noted that even when using a

displaceable permanent magnet instead of a coil to be generated on the outside to achieve the required quiescent flux Total flow e.g. «, as a result of inaccuracies occurring in practice when moving such a magnet can be easily overstepped, so that in this too Trap one attached to one of the contact tongues Permanent magnet received VosTuagsietisiertrag the danger .a eliminated again "

0098 46/1599

From the one shown in Fig. 2, other advantageous Execution form of a magnetic tongue contact according to the invention, the essential part here is now shown. The magnetic tongue contact 19 contains two mutually partially overlapping contact tongues 21 and 23 Made of magnetizable material · The contact tongues 21 and 23 are provided with identical permanent magnets 25 or * 27, which are on the side facing the other contact tongue of the relevant Contact tongue are attached. The permanent magnets 25 and 27 are equidistant from the free end of the Contact tongues 21 and 23 near the free end of the contact tongues 23 and 21 attached. The direction of polarization of the two Permanent magnet is transverse to the longitudinal direction of the contact tongues and parallel to their direction of movement and is for both Magnets the same, with the magnetic north * and south poles are at the points indicated in FIG. 2 and the magnetic field lines are essentially those indicated in FIG Show course. The total strength of the identical permanent magnets 25 and 27 is sufficient, the contact tongues 21 and I.

! '■ ■ "■ ■ I -

23 to hold in the closed state without the aid of a The magnetic flux generated externally, but it is not sufficiently large, the contact tongues which are in the open state (see Fig * 2) to lead into the closed state without the aid of an externally generated magnetic Flux «D # r magnetic tongue contact Ij) is thus a working contact. As a result of the permanent magnet 23, two zones and 31 in the contact tongue 21 are premagnetized. The direction C

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the bias of zone 29 is the direction D of the bias opposite to zone 31. ' In the contact tongue 23 are two zones 33 and 27 due to the permanent magnet 35 premagnetized, the direction E of the premagnetization of the zone 33 of the direction F of the premagnetization of the Zone 35 is opposite.

The contact tongues 21 and 23 are brought into the closed state by means of an external device (e.g. by a coil) generated magnetic working flux in the direction P (see Fig. 2), the direction of which at the point the existing between the contact tongues 21 and 23 contact opening 37 is the same as the direction of the already at this point existing flux of the permanent magnets 25 and 27 1st »the outside generated flux is eliminated when the contact tongues 21 and 23 are in the closed state. the Interruption of the only by the permanent magnets 25 and -7 The held contact takes place by a flow of rest generated on the outside in the direction Q (see FIG. 2).

Furthermore, the strength of the permanent magnets 25 and 27 is such that in the case of an externally generated work flow in the direction P, the pre-magnetized zones 31 and not yet reach saturation, while in the case of an externally generated rest flow in the direction Q, the pre-magnetized zones 29 and 35 in the saturation come. Even if the total flow to be generated externally in the direction Q is largely exceeded, the aa.xtn in the saturation zones 29 and 35 prevent that

0 09848 / t599

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the rest flow passing through the contact tongues 21 and 23 in series reaches such a value that it closes again
the contact reeds can occur after the interruption.

Similar to the tongue contact 1 according to FIG. 1
the tongue contact 19 according to FIG. 2 does not have any larger dimensions than the usual tongue contacts.

Venn the magnetic tongue contact 19 by a suitable choice of the strength of the permanent magnets 25 and 2? a normally closed contact forms, the above-mentioned is of course also Result achieved.

If the magnetic tongue contact is dimensioned in such a way that a strong pre-magnetization is necessary, "a magnetic material is used for the permanent magnet or the permanent magnets" around 50
Contains atomic percent platinum and about 50 atomic percent cobalt.
This magnetic material has the property that relatively small permanent magnets with a high field strength can be obtained

• To illustrate the dimensions of an embodiment of a tongue contact according to the invention
in Fig. 2 the most essential dimensions with the letters
a, b, c, d, e and f indicated «where:

a = 0.33 mm »b« Q, 85 mn, c = 1.00 mm, d == 0.10 mn, e -_ 0.10 mm, f 'se- 0.30 mm »

You permanent ^one used in this Ausführungsfone magnets contain 50 Atöwprozent platinum and 5O Atcisprozent
Cobalt and are through after being attached to the contact tongue

009846/1589

9415

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a field with © Isier ladtuktloa of about 2.5 Weber / m magnetized 0

Let it be toeraerist ρ that the tongue contact after. Fi 2 symmetrize !! formed is by no means not ₀ what jedocii

g is «"

0 0 9 ^cr i ¹ t 9 -3

Claims (2)

PHN. -; 13 - ■; .. ■■ '. P AT EN T A N S P R UC HE. Magnetic tongue contact with two contact tongues and at least one permanent magnet, the field of which holds the contact tongues in the once closed state, thereby characterized in that the dating magnet is close to one of the contact tongues on the side facing the other contact tongue the overlap area of the two contact tongues arranged is, wherein the polarization direction of the permanent magnet is transverse to the longitudinal direction of the contact tongues and parallel to them Direction of movement and a significant part of the flux of the permanent magnet through the free end of the mentioned other contact tongue runs. 2. Magnetic tongue contact according to claim 1, characterized in that each of the two contact tongues with a permanent magnet attached to the described © Welse is provided, which polarizes magnets in the rectification are. 3 »Magnetic tongue contact according to claim 1 or 2 characterized in that one of the contact tongues in series running through, externally generated magnetic River whose direction at the point of contact corresponds to the flow of the Permanent magnet or the permanent magnet opposite and its value is such that the difference between the two The flow of the contact tongues from the open to the closed state can lead to the permanent magnet subsequent part of the contact tongue unambiguously becomes magnetically saturated, ■ ⁷ 009846/1599 PHN. He magnetic tongue contact according to claim 1 or Z dadtarcSi ^ indicates that the! Magnetic. The material of the permanent magnet or the two permanent magnets contains about 50 atomic percent platinum and 50 atomic percent cobalt. 5 «Magnetic two-way contact according to one of the preceding claims, characterized in that the Kcmtaktzungöxi -are housed in an airtight sealed envelope. 9846/1539