SE123716C1

SE123716C1 -

Info

Publication number: SE123716C1
Authority: SE
Publication date: 1948-01-01

Description

Uppfinnare: P. L. S.-S. Clementz. Inventor: P. L. S.-S. Clementz.

Foreliggande uppfinning avser en s. k. miniatyrmotor for mycket sma effektbelopp sasom upp till nagra watts effekt och av sm.a dimensioner. De sma dimensionerna medfora, att man maste konstruera en sad:an motor helt eller delvis efter andra principer an de, som kunna tillampas vid storre motorer. Om--ant kunna vid en miniatyrmotor vissa principer och konstruktionsdetaljer, som aro olampliga -vid motorer for stone effektbelopp, komma till anvandning. The present invention relates to a so-called miniature motor for very small power amounts such as up to a few watts of power and of small dimensions. The small dimensions mean that a sad engine must be designed in whole or in part according to other principles than those that can be applied to larger engines. If - ant in a miniature engine certain principles and construction details, which are unsuitable - in engines for stone power amounts, can be used.

Det är kant att utfora motorer med en rotor, som bringas i rotation medelst stotvisa stromstotar och darigenom fororsakad periodiskt aterkommande magnetisering av rotor och stator och vilken har en i motorholj et stational-, till en stromkfilla anslutningsbar stromspole, som med sin ena dude är forbtmden med en mot en a rotorn fastsatt kollektor anliggande slapsko och som koncentriskt omsluter rotorn, medan Ovriga i den magnetiska kretsen ingaende delar i sin tur omsluta stronaspolen. Enligt uppfinningen utnyttjas en del av den fasta stromspolens kraftiga falt till att fixera motorn i axiell led, i det att i motorn ingàr ett element, som är anordnat att genom magnetverkan halla det roterande systemet i motorn tryckt mot den i motorholjet belfigna axelandens .axiallager. Det namnda axiallagret kan med fordel bestd. helt enkelt av en .spets, mot vilken det roterande systemet stoder i alla lagen av motorn, alltsa liven da den utgaende axelfinden fir riktad nedat. Man undviker salunda stodlager vid denna axelande, vilket skulle medfora hog friktion genom dä-Hg smorjning. Hdr kunna ju spetsfarmiga lager icke komma till anvandning. Genom att stromspolen är stationar, blir det roterande systemet latt som elementet ifraga har till uppgift att paverka. It is possible to design motors with a rotor, which is brought into rotation by means of shock-current currents and thereby causes periodically occurring magnetization of the rotor and stator, and which has a current coil which can be connected in the motor housing to a current file and which is connected to one dude. with a slack shoe attached to a collector attached to a rotor and concentrically enclosing the rotor, while other parts of the magnetic circuit in turn enclose the strona coil. According to the invention, a part of the strong field of the fixed current coil is used to fix the motor in axial direction, in that the motor includes an element which is arranged to keep the rotating system in the motor pressed against the axial bearing of the shaft housing located in the motor housing. The said axial bearing can advantageously last. simply by a .pex, against which the rotating system stands in all layers of the engine, i.e. the life when the outgoing shaft fin is directed downwards. Thus, thrust bearings are avoided at this shaft, which would cause high friction due to lubrication. After all, pointed-layer bearings cannot be used. Because the current coil is stationary, the rotating system becomes easy for the element in question to have the task of influencing.

Ett lankmotstand, eventuellt kombinerat med en kondensator, är foretradesvis inkopplat Over brytstallet mellan slapskon och kollektorn. Detta motstand medfor i fareliggande fall den speciella fordelen, att elementet halles i viss grad magnetiserat awn under intervallen mellan strOmstotarna, vilket ytterligare bidrager till att hindra det roterande systemet att falla nedat under tyngdkraftens inverkan. A longitudinal resistor, possibly combined with a capacitor, is preferably connected across the breaker between the slack shoe and the collector. This resistance entails in the dangerous case the special advantage that the element is kept to a certain extent magnetized awn during the intervals between the electric shocks, which further contributes to preventing the rotating system from falling downwards under the influence of gravity.

Uppfinningen skall nedan narmare beskrivas under hanvisning till a bifogade ritning sam exempel visade utforingsform av densamma. The invention will be described in more detail below with reference to the accompanying drawing and an exemplary embodiment thereof.

I fig. 1 visas en enligt uppfinningen utford miniatyrmotor i en langdsektion efter Iinjeni fig. 2 och 3, yilka i sin tur aro sektioner efter respektive linjernaoch III—III 1 fig. 1. Fig. 1 shows a miniature motor challenged according to the invention in a longitudinal section according to lines 2 and 3, which in turn are sections along the respective lines and III-III in Fig. 1.

A ritningen betecknar 10 motorns holje, vilket Or av ledande icke magnetiserbart material, sasom massing, och a vars cylindriska insida ár anbragt en stator i foreliggan.de fall i form av tre mjukjarnstavar 12, som dro jamnt fordelade runt periferien. Dessa jamstavar kunna hallas i sitt lage darigenom att de aro fastklamda mellan motorns andgavlar 13 och 15. En axel 14 gar genom Wets 10 andgavel 13 och slutar inne i motorn med .ett lager i form av en spets 16, som anligger mot motorns andgavel 15. Det fir harvid lampligt att medelst skruvar eller dylikt anbringa en plat 18 pa utsidan av .sistndmnda gavel, mot vilken plat spetsen 16 anligger. I urhorrningen fCir axelanden i gayeln 15 kan pa kant salt vara inlagd oljedrankt lilt eller dylikt. Axeln 14 uppbar en rotor lampligen i form av tvenne pa ett avstand frail varandra anbragta platar 20 respektive platpaket av mjukjarn, som aro utbildade med samma antal poler som antalet statorsta-var 12. Vidare är en kollektor 22 fast forbunden med axeln 14 invid dennas ur motorholjet utgaende ande. Denna kollektor är p i och for sig kant satt appdelad i runt dess omkrets f8rdelade fall i motsvarighet till antalet poler pa rotorn och statorn. I foreliggande fall har kollektorn salunda tre fall 24 (fig. 2) sam staI ledande forbindelse med axeln och som aro atskilda av tre fall, som medelst skikt 26 Aro isolerade Iran forstnamnda falt och claimed fran .axeln. In the drawing, 10 denotes the housing of the motor, which is made of conductive non-magnetizable material, such as massing, and in the cylindrical inside of which a stator is arranged in the present case in the form of three soft iron rods 12, which are evenly distributed around the periphery. These jamming rods can be held in their position by being clamped between the motor end caps 13 and 15. A shaft 14 passes through Wets 10 end cap 13 and terminates inside the motor with a bearing in the form of a tip 16 which abuts the motor end cap 15. It is then convenient to apply by means of screws or the like a plate 18 on the outside of the latter end, against which plate the tip 16 abuts. In the perforation for the shoulder ends in the gayel 15, salt-soaked oil or the like may be added to the edge of the salt. The shaft 14 suitably carried a rotor in the form of two spaced apart plates 20 and soft iron plate packs, respectively, which are formed with the same number of poles as the number of stator rods 12. Furthermore, a collector 22 is fixedly connected to the shaft 14 adjacent thereto. the engine outgoing spirit. This collector is in itself perpendicularly distributed in cases distributed around its circumference corresponding to the number of poles on the rotor and the stator. In the present case, the collector thus has three cases 24 (Fig. 2) simultaneously connected to the shaft and which are separated by three cases, which by means of layers 26 are isolated from the first-mentioned field and claimed from the shaft.

Mellan rotorplatarna 20 Or anbragt en omkring axeln liggande stationar stromspole 28. Between the rotor plates 20 Or arranged a stationary current coil 28 lying around the shaft.

Denna stromspole Or i sin ena ande genom en ledningssladd 30 anslutbar till en strom- 2-- — kdlla och i sin andra ande ansluten till det ledande motorholjet 10 via en platskena 32 sasom antytts rid 34. Spolens av icke shornforande material, sasom bakelit, utforda karna 36 dr anbragt mellan av samma material utfarda gavlar 38, som na ut emot motorholjet och hava urtagningar, i vilka statorstavarna 12 passa in. This current coil Or is connected in one end by a lead cord 30 to a current source and in its other spirit connected to the conductive motor housing 10 via a seat rail 32 as indicated by rod 34. The coil of non-horn-bearing material, such as bakelite, challenge the vessels 36 which are arranged between ends 38 made of the same material, which reach out towards the engine housing and have recesses in which the stator rods 12 fit.

En sldpsko 40 ãr ledbart lagrad pa platskenan 32 och Mlles medelst en fjader i anliggning mot kollektorns 22 cylindriska, i MIt uppdelade yta. Mellan kollektorn och huset 10 är vidare anbragt ett laclunotstand 42, som foretradesvis ãr inlagt mellan spolens gaylar 38 och lindat omkring motoraxeln pa samma satt som spolen. Detta motstand är i sin ena ande anslutet till slapskon 40 respektive platskenan 32 och i sin andra ande till motorhuset 10. En ledningssladd 44 är i kontaktforbindelse med motorhuset 10. lurid axellagret 16 fOrefinnes en stational- kropp av magnetiserbart material, Id-liken foretradesvis kan besta av en mjukjarnsring 46 inlagd omedelbart innanfor gavellocket 15. Ringen 46 stracker sig ink mot motorns centrum och kan lianas i sitt ldge genom att fastkldmmas me!-Ian gavellocket 15 och statorstavarna 12. A slip shoe 40 is articulated on the seat rail 32 and Mlles by means of a spring in abutment against the cylindrical, divided surface of the collector 22. Between the collector and the housing 10 is further arranged a laclun stand 42, which is preferably inserted between the coils 38 of the coil and wound around the motor shaft in the same way as the coil. This resistor is connected in one end to the slack shoe 40 and the seat rail 32 and in its other end to the motor housing 10. A lead cord 44 is in contact with the motor housing 10. lurid the shaft bearing 16 There is a stationary body of magnetizable material. consists of a soft iron ring 46 inserted immediately inside the end cap 15. The ring 46 extends inwards towards the center of the motor and can be lined in its length by being clamped with the end cap 15 and the stator rods 12.

Motorns verkningssatt ham,* av ovanstaende. Dd strOmmen passerar genom spolen 28 via h5ljet 10, axeln 14, kollektorn 22, slapskon 40 och skenan 32 intraffar under axelns 14 rotation en periodisk magnetisering °eh avmagnetisering av rotorn och statorn, sa att ett 1 samma riktning verkande drivmoment er- Samtidigt framkallar ringen 46 ett i riktning at h6ger i fig. 1 verkande axialtryck. pa axeln och de pa denna fasta delarna, vilket tryck ãr .av sadan storleksordning att det for-mar bara dessa element iiven om axelns utgaende uncle pekar nedat. The engine powered him, * of the above. The current passes through the coil 28 via the housing 10, the shaft 14, the collector 22, the slack shoe 40 and the rail 32 undergoes a periodic magnetization during the rotation of the shaft 14 and demagnetization of the rotor and the stator 46 an axial pressure acting in the direction to the right in Fig. 1. on the shaft and those on this fixed parts, which pressure is of such an order of magnitude that it forms only these elements even if the outgoing uncle of the shaft points downwards.

Uppfinningen ãr givetvis icke begransad till den visade utfOringsformen utan kan varieras i flera avseenden inom ramen for deefterfoljande patentanspraken. The invention is of course not limited to the embodiment shown but can be varied in several respects within the scope of the following patent claims.

Claims

Patent claim:

Miniature motor,'s rotor of cars's is brought into rotation by means of shock current currents and thereby caused periodically occurring magnetization of rotor (20) and stator and which hat in the motor housing stations, to a cold cold connectable current coil (28), which with its one spirit is connected to a collector (22) attached to an O. rotor and abutting the rotor (20) concentrically, while other parts of the magnetic circuit in turn enclose the current coil, which can be marked by an element (46). ), which is arranged to have the rotating system in the engine pressed against the axial bearing of the axle bearing shaft located in the engine housing by magnetic action.

Device according to patent claim 1, characterized in that a paint resistor (42), possibly combined with a capacitor, is connected across the breaking point between the slack shoe and the collector. Stookholin 1948. Kungl, Boktr. P. A. Itiorotedt & Saner 480089