DE1538749A1 - DC motor for the direct drive of a capstan or the like. - Google Patents

Description

PATENT ADVOCATE Dlpi.-f ng. Rudolf MSbut

? 4! ReuMingen / Wörtl;
Hlndtnburg.tr. 65-T «t« foo 34718

Patent--

Gebr ° Bühler Ifeclif Ig ₀ GmbH

Köraeretraße 14!

Same fastromaotpr for any direct intrigue

The j ^? Findingiing concerns a direct current motor »in particular a brushless direct current motor, which is suitable for direct drive of a sound wave or another rotating object»

So far, it is in battery-operated tape recorders, common to drive the izitriebiswelle for as "tape by a DC motor via a reduction gear" The Spfindung had the object of "a particular brushless DC motor to create the _t for

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© a direct belt drive can be used, de * So one has a relatively small number of revolutions, a sufficient torque on the rotor shaft, which is on the same side the so-called © Tonwell © forms, develops and the one has sufficient efficiency to make good use of it which are stored in the battery. Achieve energy »

This object is achieved by a multi-pole equetromial motor which, according to the invention, is provided with a multi-pole permanent magnet coil, in which the poles are evenly distributed over its circumference. " and which has a stator with the rotating permanent magnet poles opposite individual coils · In this motor, several coils, which are each offset from one another by the same coil steps & t on the stator, are connected in series or parallel to one another and controlled via a well-known control circuit, in this way in that the individual coil groups are applied to the DC power source to a coil switching step of, preferably by 120 electrical degrees in sequence "is a function of the selected number of individual coils and the orbiting Permanentmagnetpoiö in this case $ eu.m by the control circuit caused Wide erschalt en mechanical Sehaltschritt © raiele “he is only one lover! des- electrical

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Sehelfcschrittes _β corresponds this AVX catfish the Rew & nechte the one hand relatively small and on the other JDrehsaal beits EIA uniform and sufficiently powerful torque on the rotor shaft

The direct current motor is designed in advance as a flat design, whereby according to the invention the permanent magnet poles as KreiBringsegpönt® on a? Runner washer can be arranged. _B the one? Statoraeheiba ait Btnzelepulea konaentrisoh opposite _ö Here k & mi the Sta $ o? Shelf as leuaellierfeex * Magnetic inference kÖEpes? According to the invention, it is designed as a spiral wound from a soft iron strip _t can βά which the mutual distance of the two discs and dealt the air gap in the motor Magnetkreieen eiaetöllbaa? is",

Further features of the iür-invention result from the following description in connection with the drawing » on which different embodiments of one he « DC motor trained according to the invention more or are shown in a less Scheaian way *

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Show in detail:

Fig. 1 is a plan view of the running disk of a motor t trained according to the invention

FIG. 2 shows a plan view of one of the runner discs according to Figure 1 assigned Stsndersoheibe dee Motors .;

Fig. 5 is a central cross-section through one of the ropes shown in figure t and 2 " put DC motor j

Figo 4 shows an echematic cross section through a other implementation of a farm according to the invention trained GleichstrouBotorst

Flg. 5 is a plan view of a detector assembly for one more execution example DC motor designed according to the invention »

The rotor disk 1 shown in Figure 1 is adt sixteen evenly distributed over its Uaf and closely spaced Peraaaent magnetic fiingeogiients arranged from one another

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alternating polarity, i.e. nlt eight pairs of poles. The Btatorschdlbe 3 _t, which forms the back door for the Bearfflanentaagneten, is laminated in the radial direction. This can be achieved in a simple manner "that the disc 3 is wound in a spiral shape from a narrow soft iron strip 5"

I ⁵ IgUr 3 shows a flat direct current motor built up from an ötatoracheibe 1 and an ötatoracheibe 3 ο The Iaäuferersheehle 1 is attached to a so-called sound wave of a tape recorder forming shaft 6 by means of a lift 7 »The shaft is vertical and down from your lower 6a on a bearing ball 6i, which in turn rests against a housing 9 of the engine mounted on a housing 9 of the engine. By means of the adjusting screw 10, the H can ieniftge the shaft 6 and the "it its associated run adjusted ereoheib · 1, and thus üez air gap 11» wieohan the PeraanentmagneteegÄonten 2 of the rotor disk 1 and the flat Hingapulen 4 of the stator 3 are changed to set a low Iaduktionswirkung ·

As shown in Figure 4 in a highly schematic way · & aa ~ BATH ORIGINAL

As a guide, a direct current motor designed for charging can also be designed in a conventional cylinder design Circumference several, alternating an on-board pole and a south pole having Pernenentsagaetatege 14 equally distributed attached * are »These Permsnentaagnetetege * W · lie through an air gap 15 separates stationary fiinzelepulen 16 opposite, which are arranged on the inside of the concentric, hollow cylinder and laaelliert designed as a magnetic backlash body 17 »

The DC motors according to the invention can without Collectors be trained, and the control of their Windings can be controlled via an electronic control circuit take place, the ta ready proposed way via «agnet« - Field-dependent organs is influenced as a function of the speed and which can also have an electronic rotation regulating device

He is an ingenious trained equetromeot he can in order to avoid an electronic renewal circuit, however can also be provided with a collector, over which the operating DC current of the individual motor windings in one

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The order is not guided, J & n execution betepiöl for an "old" rollelcfcoranardniing let Aa figure $ shown The collector arrangement shown there leads to two ski tracks 18 and 19 arranged concentrically in one plane, of which the grinding track 18 is designed as a closed bit is, while the grinding balm 19 is divided into one of the number of vibrating pulses of the motor · entepreeheadon number, of evenly distributed lamellae 20: is «, work with each of the slip rings 18 and 19!» connected and both with the Ij & uf he circulate _f as indicated in the drawing by a wire arrow »

A collector order, figure 5 old one in twelve Segaente shared slip ring 19 knew for example for a motor according to Figure 1-3 use and arranged on the ätatorscheibe 5 within the coils “Every lanelle is 20 years old Coils 4 shown in Figure 2 connected »their other Bathing, for example, in catfish not shown, su one The star point can also be combined from FIG. 5 As can be seen, every fourth segment 20 and thus every fourth stator coil 4 are connected to one another. This results in three eohematically indicated fucking groups

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23 to 25, which mratn successively in the same sense of rotation via the rotating brushes 21 and 22 to a direct current source 26. * Through the selected Spulonachritt and the öpu.3 engi / uppcn ^ -ahl is tob. a Kollektorlamolle 20 to the next, an electrical circuit Esch ride of 120 ° achieved, while the mechanical SchaltungsBchritt only 30 ° _e By vielpolpaerig © training of the machine therefore is a

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electrical speed subdivision achieved, which allows the division of an exact speed, so that a mechanical gearbox can be omitted. With DC motors designed according to the invention, a simple and cheap drive mechanism for tape recording and playback devices can be designed, whereby experience shows that the device runs very well which is better than with the interposition of a mechanical reduction gear ₀

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Claims (1)

Patent discussions DC motor, especially collector-less DC motor, for the direct drive of a ToDiiallö. - o «dgl _B> characterized by a multi-pole pair of permanent magnets (liijS), in which the poles (2,14) are evenly distributed over its circumference» and. each -um same steps coils offset by a stator with the rotating Permanentoagoetpolea (2.14 x) opposite Mnzelspulen (4.16), and characterized in that a plurality of coils {4.16) _t against each other are arranged on the stator, with each other in line · Or are connected in parallel to each other and a control circuit, also known per se, is provided »via which the individual coil groups (scB. 2> -25) are successively connected to a direct current source (30Bo26)» in such a way that a coil switching step of preferably 120 electrical degrees each appear « DC motor according to claim 1, characterized in that the connecting pole (4) is a circular ring * segment © on a 3Üufej? soheibe (1) are arranged » 90988S / 0548 BATH ORIGINAL « ₁₀ - ρ 517 ■ ■ «ίο - that of a stator washer (3) ait the J & nzelapulon concentrically opposite, and that the stator disk (3) as laminated or magnetic return path body in Shape of a spiral wound from an iSisenbend 0) » trained o 5ο. DC motor according to claim 1 and claim 2 »characterized in that the rotor disk (t) and the rotor disk (3) are arranged horizontally and a vertical rotor shaft (6) as lower .END (6a) on an adjustable bearing in the axial Hchtuag point _rests% at which the mutual distance of the two discs (1,3) and thus the! air gap (11) in the Hagnetkreisen de »motor is adjustable _c '! · Ο DC motor according to claim 3, characterized by the fact that the point bearing is formed by a ball (8) on which the face of the rotor shaft (6) on and which one on the opposite. Side is a coaxial adjusting screw (10) <, DC motor according to Claim 1, characterized in that the rotor (13) and the stator (17) are cylindrical 909885/0548 badöwöinal DC motor according to one of the claims 1.-Jj ₁ da *, characterized in that it is provided for mechanical control with a stationary collector and a pair of brushes (21, 22) rotating with the rotor, the two brushes being connected to one another and the one (21) cooperates with a closed contact track (18) and the other (22) with a fused contact track (19) in which each lamella (20) is connected to the end of a spool (4) DC motor according to claim 6 and one of claims 2 ~ 4, characterized in that it has a Has plan collector, in which the contact banks (18,19) run on concentric circles and preferably on the ligament disc and concentric to the coil arrangement are formed * BATH 909685/0548 \ 4X. Blank page