SI21771A - Electromagnetic display drive system - Google Patents
Electromagnetic display drive system Download PDFInfo
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- SI21771A SI21771A SI200400127A SI200400127A SI21771A SI 21771 A SI21771 A SI 21771A SI 200400127 A SI200400127 A SI 200400127A SI 200400127 A SI200400127 A SI 200400127A SI 21771 A SI21771 A SI 21771A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
- G09F9/375—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the position of the elements being controlled by the application of a magnetic field
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
Description
Predmet izuma je izvedba, uporabljeni materiali in postopek izdelave magnetnega kroga magnetnega preklopnika, ki se uporablja za pogon lopute posamezne točke prikazovalnika.The subject of the invention is the embodiment, materials used and the manufacturing process of a magnetic circuit of a magnetic switch used to drive the flap of a single point of the display.
TEHNIČNO PODROČJE IZUMATECHNICAL FIELD OF THE INVENTION
Predstavljeni izum spada v skupino bistabilnih magnetnih aktuatoqev, katerega delovanje temelji na interakciji magnetnega polja trajnega magneta lopute prikazovalnika in magnetnega jedra elektromagneta.The present invention belongs to the group of bistable magnetic actuators, the operation of which is based on the interaction of the magnetic field of the permanent magnet of the display flap and the magnetic core of the electromagnet.
Po mednarodni patentni klasifikaciji spada izum, ki vključuje konstrukcijo, izbor materialov, postopek izdelave magnetnega preklopnika in omejevanja raztresenega magnetnega polja v okolico, v skupino H01F 3/14, H01F 7/14 in H01F 7/121 njegova uporaba pa v skupino G09F 3/4 in G09F 9/37.According to the International Patent Classification, the invention includes construction, selection of materials, process for manufacturing a magnetic switch and limiting the scattered magnetic field to the environment, and in its group H01F 3/14, H01F 7/14 and H01F 7/121 its use in group G09F 3 / 4 and G09F 9/37.
TEHNIČNI PROBLEM, KI GA IZUM REŠUJETECHNICAL PROBLEM SOLVED BY THE INVENTION
Predlagani izum predstavlja novo tehnično rešitev magnetnega preklopnika za pogon lopute prikazovalnika z enostavno, kompaktno in ceneno konstrukcijo. Magnetni preklopnik je v bistvu bistabilni aktuator, ki mora omogočati preklop iz ene bistabilne lege v drugo z minimalno porabo energije. To zahteva posebej oblikovani magnetni krog, ki mora biti iz materialov z natančno določenimi magnetnimi lastnostmi. Magnetni krog preklopnika mora tudi zagotavljati minimalni rastros magnetnega polja v okolico, s čemer se prepreči medsebojni vpliv sosednjih točk prikazovalnika. Preklopnik mora zanesljivo delovati v širokem temperaturnem področju in zagotavljati stabilnost položaja lopute v obeh bistabilnih položajih. V kolikor zunanji vplivi kot so tresljaji, udarci, vibracije, in drugo, spremenijo položaj lopute prikazovalnika, mora magnetni preklopnik takoj po odpravi zunanjega vpliva vrniti loputo v prvotni, to je želj eni položaj.The present invention is a new technical solution of a magnetic switch for driving the hatch of the display with a simple, compact and inexpensive construction. A magnetic switch is essentially a bistable actuator, which must be able to switch from one bistable position to another with minimal energy consumption. This requires a specially designed magnetic circuit, which must be made of materials with well-defined magnetic properties. The magnetic circuit of the switch must also ensure a minimum spread of the magnetic field into the surroundings, preventing the adjacent points of the display from interacting. The switch must operate reliably over a wide temperature range and ensure the stability of the flap position in both bistable positions. To the extent that external influences such as vibrations, shocks, vibrations, etc., change the position of the display flap, the magnetic switch must immediately return the flap to its original position, ie a single position, once the external influence has been eliminated.
DOSLEJ ZNANE TEHNIČNE REŠITVETECHNICAL SOLUTIONS Known So far
Elektromagnetni prikazni panoji so poznani že več kot dve desetletji in imajo pomembno vlogo v aplikacijah, kjer je zahtevan relativno velik prikaz z zelo kontrastnim napisom in odlično vidljivostjo pri dobrih svetlobnih pogojih. Bistabilni elektromagnetni prikazni panoji (US 3,871,945, US 4,577,427, US 4,860,470, EP 0 084 959, EP 0 731 435 Al, US 4,243,978, US 5,771,616, US 6,272,778, US 6,025,825, US 5,898,418, US 6,603,458,...) dobro izpolnjujejo zgornje zahteve. Uporabljajo se kot prikaz destinacije poti oz. relacije vožnje na avtobusih in vlakih, prikazni panoji na letališčih, avtobusnih in železniških postajah in na športnih igriščih. V dobrih svetlobnih pogojih imajo ti prikazi dober kontrast in odlično stransko vidljivost. To je doseženo z uporabo svetle odbojne barve na izbranih prikaznih elementih in črno mat plastiko na neizbranih prikaznih elementih.Electromagnetic display panels have been known for over two decades and play an important role in applications where a relatively large display with very contrasting inscription and excellent visibility under good light conditions is required. The bistable electromagnetic display panels (US 3,871,945, US 4,577,427, US 4,860,470, EP 0 084 959, EP 0 731 435 Al, US 4,243,978, US 5,771,616, US 6,272,778, US 6,025,825, US 5,898,418, US 6,603,458, ...) meet the above requirements. They are used to show the destination of the route or. bus and train routes, display boards at airports, bus and train stations and at sports fields. In good light conditions, these displays have good contrast and excellent lateral visibility. This is achieved by using a bright reflective color on the selected display elements and black matte plastic on the non-selected display elements.
Princip delovanja obstoječih rešitev je osnovan v glavnem na vrtljivi loputi, ki se ima možnost zavrteti okoli svoje osi za < 180° med mehanskima omejilcema zasuka in ima velikost celotne prikazne točke. Na sprednji in zadnji strani je loputa pobarvana z visoko kontrastnima barvama (EP 0327250, US 6,272,778, US 6,025,825, US 5,898,418,...). Za preklop med “on” in “off’ položajem prikazne točke, te rešitve tipično uporabljajo v loputo vgrajen trajni magnet in v točko vgrajeno tuljavo navito okoli bodisi ravnega (EP 0327250, US 6,603,458, US 6,272,778,...) ali U oblikovanega magnetnega jedra (US 4,243,978, US 6,025,825, US 5,898,418, US 5,005,305,...). Nekatere tehnične rešitve vsebujejo dodaten permanentni magnet za izboljšanje stabilnosti obeh pozicij lopute (US 4,243,978, US 4,531,318).The principle of operation of existing solutions is based mainly on a rotary flap that can be rotated about its axis by <180 ° between the mechanical rotary limiters and has the size of the entire display point. The flap is painted in high contrast colors on the front and back (EP 0327250, US 6,272,778, US 6,025,825, US 5,898,418, ...). To switch between the "on" and "off" positions of the point of view, these solutions typically use a permanent magnet integrated into the flap and a coil coiled around the point (EP 0327250, US 6,603,458, US 6,272,778, ...) or U shaped magnetic in the flap. sails (US 4,243,978, US 6,025,825, US 5,898,418, US 5,005,305, ...). Some technical solutions include an additional permanent magnet to improve the stability of both flap positions (US 4,243,978, US 4,531,318).
Poznan pa je še en bistveno drugačen način delovanja, ki je osnovan na prikazni točki razdeljeni na dva dela. Vsaka točka ima vgrajeno bistabilno rotirajočo loputo, ki je asimetrična glede na rotacijsko os. V vsakem od bistabilnih položajev loputa pokriva enega od obeh delov prikazne točke. Stran lopute, ki je obrnjena proti točki in površina točke, ki jo loputa prekriva, sta pobarvani z eno barvo, nasprotna stran lopute in ostali del površine točke pa z drugo barvo, ki je napram prvi zelo kontrastna (US 6,603,458, DE 3501912C2, DE 3601018A1). Za preklop med “on” in “off’ stanjem točke, ta rešitev uporablja trajni magnet, kije vgrajen v vsako loputo v bližini rotacijske osi. Loputo zavrti iz enega v drugi stabilni položaj elektromagnet, ki ima ravno magnetno jedro in se nahaja na zadnji strani vsake prikazne točke. Taka konstrukcija ima napram ostalim rešitvam to prednost, da je celotna konstrukcija lahko znatno tanjša (samo polovica površine točke rotira okoli osi)There is, however, another substantially different mode of operation based on a point of view divided into two parts. Each point has a built-in bistable rotary damper that is asymmetrical with respect to the rotary axis. In each of the bistable positions, the flap covers one of the two parts of the display point. The side of the flap facing the point and the surface of the point flap covered by the flap are painted in one color, and the opposite side of the flap and the rest of the surface of the dot with the second color contrasting the first with very contrast (US 6,603,458, DE 3501912C2, DE 3601018A1). To switch between the "on" and "off" state of the point, this solution uses a permanent magnet embedded in each flap near the rotary axis. The flap rotates from one stable position to the other an electromagnet having a flat magnetic core located at the back of each display point. Such a construction has the advantage, over other solutions, that the whole structure can be significantly thinner (only half of the point surface rotates about an axis)
OPIS IZUMADESCRIPTION OF THE INVENTION
Ključni namen izuma je povečati zmogljivost in zanesljivost delovanja elektromagnetnega pogonskega sistema za menjavanje položaja lopute prikazovalnika med “ON” in “OFF” položajem posamezne prikazne točke ob minimalni porabi električne energije, povečati stabilnost položaja lopute v obeh bistabilnih položajih, zmanjšati medsebojne magnetne vplive sosednjih točk prikazovalnika, povečati kompaktnost konstrukcije magnetnega preklopnika ob zmanjšanem številu sestavnih delov, možnostjo avtomatske sestave in pocenitev izdelave prikazovalnika ter zmanjšati debelino prikazovalnika.The key purpose of the invention is to increase the performance and reliability of the operation of the electromagnetic drive system for changing the position of the display flap between the "ON" and "OFF" position of each display point with minimum electricity consumption, to increase the stability of the flap position in both bistable positions, to reduce the magnetic interactions of neighboring points to increase the compactness of the magnetic switch design with a reduced number of components, the possibility of automatic assembly and low cost of construction of the display, and to reduce the thickness of the display.
Bistvo magnetnega preklopnika po izumu je v obliki magnetnega kroga, ki ustvajja vrtilni moment na loputo prikazovalnika na dveh krajevno ločenih področjih v skladu s patentno zahtevo 1. Z dvema področjema seje povečala skupna sila, ki deluje na loputo.The essence of the magnetic switch according to the invention is in the form of a magnetic circuit which applies torque to the hatch of the display in two locally separated areas according to claim 1. With two areas of the session, the total force acting on the hatch is increased.
V izumu predlagani rešitvi je to izvedeno z U obliko jedra elektromagneta in magnetom oziroma magnetoma na loputi. Pri tem je jedro 3u (Sl. 1) postavljeno vzdolžno na os vrtenja lopute, česar podobnega ni v drugih tehničnih rešitvah, ki uporabljajo U obliko jedra elektromagneta. Takšen položaj jedra zagotavlja manjši vpliv položaja lopute na vrtilni moment, kot pa je to v primeru tehničnih rešitev prej navedenih patentov, prav tako pa se z uporabo U oblike jedra zmanjša debelina prikazovalnika. Magnet na loputi je lahko v enem kosu z antiparalelno smeijo magnetenja, ki je hkrati tudi pravokotna na površino lopute in os vrtenja lopute, ali pa je deljen na dva ločena dela, ki sta prav tako antiparalelno magnetena. Magneti so izdelani iz plastično vezanih NdFeB prahov ali iz plastično vezanega feritnega prahu po postopku dvokomponentnega brizganja.In the invention, the proposed solution is implemented with the U-shaped electromagnet core and the magnet or magnets on the flap. In this case, the core 3u (Fig. 1) is positioned longitudinally on the axis of rotation of the flap, which is not the case in other technical solutions that use the U-shaped core of the electromagnet. Such a kernel position provides less influence of the flap position on torque than is the case with the technical solutions of the aforementioned patents and also reduces the thickness of the display using the U-shaped kernel. The magnet on the flap can be in one piece with antiparallel laughing magnetization, which is also perpendicular to the surface of the flap and the axis of rotation of the flap, or it can be divided into two separate parts which are also antiparallel magnet. The magnets are made of plastic bonded NdFeB powders or of plastic bonded ferrite powder by a two-component injection molding process.
Magnetni krog preklopnika je ob premišljeno izbranih materialih dimenzioniran s pomočjo metode končnih elementov tako, da je za preklop potrebna minimalna energija. Zmogljivost magnetnega preklopnika, zanesljivost delovanja in stabilnost položajev lopute v bistabilnih položajih so zagotovljeni z velikostjo vrtilnega momenta lopute. Zmanjšanje magnetnih vplivov med sosednjimi točkami je v izumu doseženo z obliko magnetnega kroga, ki zagotavlja minimalni raztros magnetnega polja. Zaradi tega ni potrebe po izmenjujoči orientaciji magnetov loput sosednjih točk, kot je to primer pri US 6,603,458.The magnetic circuit of the switch is dimensioned with deliberately selected materials using the finite element method so that minimal energy is required for switching. The capacity of the magnetic switch, the reliability of operation and the stability of the positions of the flap in bistable positions are guaranteed by the magnitude of the torque of the flap. In the invention, the reduction of magnetic influences between adjacent points is achieved by the design of a magnetic circuit that provides a minimum spread of the magnetic field. As a result, there is no need for alternating orientation of the flaps of adjacent points, such as in US 6,603,458.
OPIS SLIKDESCRIPTION OF THE IMAGES
V nadaljevanju je izum kot izvedbeni primer prikazan in obrazložen s pomočjo slik, ki prikazujejo:Hereinafter, the invention is exemplified and illustrated by way of figures showing:
Sl. 1. - Magnetni sistem magnetnega preklopnika z U obliko jedra elektromagneta (3u+5), ki vključuje:FIG. 1. - Magnetic magnetic switch system with U-shaped electromagnet (3u + 5), comprising:
• Vrtljivo loputo 2 z vgrajenima magnetoma (NdFeB plastomagnet ali plastoferit) 2ci, 2c2 in osjo vrtenja 2d; Površini lopute 2a in 2b sta pobarvani z zelo kontrastnima barvama, • solenoidno tuljavo 5 • U obliko magnetnega jedra 3u• Rotating flap 2 with integrated magnets (NdFeB plastomagnet or plastoferrite) 2ci, 2c 2 and 2d rotation axis; The surfaces of the flap 2a and 2b are painted in very contrasting colors, • solenoid coil 5 • U-shaped magnetic core 3u
Sl. 2. - Zgradba segmenta prikazovalnika z vgrajenim magnetnim preklopnikom.FIG. 2. - Display segment structure with built-in magnetic switch.
Sl. 3. - Razstres magnetnega polja v okolico magnetnega preklopnika.FIG. 3. - Explosion of the magnetic field into the vicinity of the magnetic switch.
• Sl. 3a - Računalniška simulacija magnetnih razmer v stabilnem položaju lopute pri U jedru.• Fig. 3a - Computer simulation of magnetic conditions in the stable position of the flap at the U core.
• Sl. 3b - Računalniška simulacija magnetnih razmer v nestabilnem položaju lopute pri U jedru.• Fig. 3b - Computer simulation of magnetic conditions in unstable flap position at U core.
• Sl. 3c - Računalnišk a simulacija magnetnih razmer v stabilnem položaju lopute pri ravnem (paličastem) jedru.• Fig. 3c - Computer simulation of magnetic conditions in the stable position of the flap at a straight (rod) core.
• Sl. 3b - Računalnišk a simulacija magnetnih razmer v nestabilnem položaju lopute pri ravnem (paličastem) jedru.• Fig. 3b - Computer simulation of magnetic conditions in an unstable flap position at a straight (rod) core.
Sl. 4. - Set loput prikazovalnika po brizganju.FIG. 4. - Set of display flaps after injection molding.
PODROBNI OPIS IZUMADETAILED DESCRIPTION OF THE INVENTION
Elektromagnetni pogonski sistem prikazovalnika po izumu je podrobno opisan s pomočjo slik 1-4The electromagnetic drive system of the display according to the invention is described in detail by means of Figures 1-4
Magnetni preklopnik za menjavanje položaja lopute prikazovalnika med “ON” in “OFF” stanjem posamezne točke po izumu je značilen po tem, da ima elektromagnet U obliko jedra, ki je postavljeno v smeri osi vrtenja lopute in da je orientacija magnetov na loputah enaka na vseh točkah prikazovalnika.The magnetic switch for changing the position of the display flap between the "ON" and "OFF" states of a single point according to the invention is characterized in that the electromagnet U is in the form of a nucleus positioned in the direction of the axis of rotation of the flap and that the orientation of the magnets on the flaps is identical at all points of the display.
Kot je razvidno iz Sl.l., je magnetni sistem preklopnika zgrajen iz lopute 2 in elektromagneta.As can be seen from FIG. 1, the magnetic switching system is constructed of flap 2 and an electromagnet.
V loputo preklopnika je vgrajen trajni magnet, ki je po smeri magnetenja razdeljen na dve področji 2ci in 2c2. Smeri magnetenja prvega in drugega področja sta antiparalelni in hkrati pravokotni na os vrtenja lopute 2d in na površino lopute. Magnet na loputi 2 je lahko razdeljen tudi na dva ločena segmenta 2ci in 2c2, kot je to razvidno iz primera na Sl. 1. Na tej sliki prikazan sistem je sestavljen iz lopute 2 z dvema permanentnima magnetoma in elektromagneta (3u+5). Za smeri magnetenja segmentov v tem primeru velja enako kot prej za področji. Za izdelavo magnetov so uporabljeni trdomagnetni materiali na osnovi plastično vezanih NdFeB prahov ali plastično vezanih feritov (plastoferitov). Izdelava lopute prikazovalnika je izvedena po postopku dvostopenjskega injekcijskega brizganja. V prvi stopnji se zabrizga magnet, v drugi pa z umetno maso ves ostali del volumna lopute. Magnet se zabrizga ob prisotnosti magnetnega polja, ki ustvari anizotropijo magnetnih lastnosti in s tem boljše magnetne lastnosti v smeri polja, zaradi česar se poveča gostota magnetnega pretoka in posledično vrtilni moment lopute. Na ta način je dosežen zadosten vrtilni moment lopute tudi ob uporabi plastično vezanih trdomagnetnih materialov, ki imajo slabše magnetne lastnosti od sintranih materialov. Magnetenje magnetov je v primeru uporabe plastoferita izvedeno s trajnimi magneti iz redkih zemelj, v primeru uporabe vezanih NdFeB pa s posebej oblikovano tokovno zanko, kije napajana s tokovnim impulzom. Magnetenje poteka hkrati za vse lopute, ki so povezane v set (glej Sl. 4). Magneti vseh loput prikazovalnika so magnetno enako orientirani, kar bistveno poenostavi izdelavo in olajša avtomatizacijo proizvodnje. Po tem se tudi razlikuje rešitev v izumu od rešitev s paličastim jedrom, kot je to na primer US 6,603,458.A permanent magnet is built into the switch flap, which is divided into two areas 2ci and 2c 2 by the magnetization direction. The magnetization directions of the first and second regions are antiparallel and at the same time perpendicular to the axis of rotation of the flap 2d and to the surface of the flap. The magnet on flap 2 can also be divided into two separate segments 2ci and 2c 2 , as shown in the example in FIG. 1. The system shown in this figure consists of a flap 2 with two permanent magnets and an electromagnet (3u + 5). In this case, the direction of magnetization of the segments is the same as before for the areas. Solid magnet materials based on plastically bonded NdFeB powders or plastically bonded ferrites (plastoferites) are used to make magnets. The display flap is manufactured using a two-stage injection molding process. In the first stage, a magnet is injected and in the second stage, the rest of the flap volume is plastic. The magnet is ejected in the presence of a magnetic field, which creates anisotropy of the magnetic properties and thus better magnetic properties in the direction of the field, which increases the magnetic flux density and, consequently, the flap torque. In this way, sufficient torque of the flap is achieved even with the use of plastic bonded rigid magnetic materials which have poorer magnetic properties than sintered materials. In the case of plastoferrite magnetization, magnetization is performed with permanent rare earth magnets and, in the case of coupled NdFeB, with a specially designed current loop, which is powered by a current pulse. The magnetization is performed simultaneously for all the flaps connected to the set (see Fig. 4). The magnets of all the flaps of the display are magnetically equally oriented, which significantly simplifies production and facilitates production automation. Thereafter, the solution of the invention also differs from the rod-core solution, such as US 6,603,458.
Elektromagnet je zgrajen iz solenoidne tuljave 5 in magnetnega jedra 3u. Nameščen je pod osjo lopute, kar je razvidno iz Sl. 1 in Sl. 2 tako, da je magnetno jedro poravnano z osjo lopute. Takšna lega jedra zagotavlja manjši vpliv lege lopute na vrtilni moment, kot pa je to v primeru tehničnih rešitev s prečno lego jedra na os lopute.The solenoid is constructed of solenoid coil 5 and magnetic core 3u. It is mounted below the flap axis, as can be seen from FIG. 1 and FIG. 2 such that the magnetic core is aligned with the axis of the flap. Such a kernel position provides less influence of the hatch position on the torque than in the case of technical solutions with the kernel cross position on the hatch axis.
Solenoidna tuljava je navita na tuljavnik iz umetne mase, kije del ogrodja prikazovalnika le (Sl.2), ki je del monolitnega bloka 1 in tvori več prikaznih točk. Konca navitja sta prispajkana na priključna pina 4a in 4b, ki sta vstavljena v ogrodje prikazovalnika lc in ld.The solenoid coil is wound on a plastic coil that is part of the display frame only (Fig. 2), which is part of monolithic block 1 and forms several display points. The ends of the winding are soldered to the terminal pins 4a and 4b, which are inserted into the display frame lc and ld.
Magnetno jedro 3u ima U obliko in je narejeno iz magnetno pol trdega materiala okroglega profila, ki dobi zadovoljive magnetne lastnosti s termično obdelavo po opravljeni mehanski obdelavi. En krak jedra je vstavljen v luknjo tuljavnika 5, drugi pa se nahaja v utoru ogrodja prikazovalnika 1, ki fiksira njegov položaj. U oblika jedra omogoča tanjšo izvedbo prikazovalnika kot je to možno pri paličastem jedru.The magnetic core 3u has a U shape and is made of a magnetically solid semi-rigid material, which has satisfactory magnetic properties by thermal treatment after mechanical treatment. One arm of the core is inserted into the hole of the coil 5 and the other is located in the groove of the frame of display 1, which fixes its position. The u-shaped kernel allows the display to be thinner than is possible with a stick core.
Magnetni krog preklopnika, ki ga sestavljajo magnetno jedro elektromagneta, magneti na loputi in zračna reža med jedrom in magneti, je konstruiran in optimiziran s pomočjo 3D metode končnih elementov, ter je prilagojen magnetnim lastnostim uporabljenih materialov. Prikaz magnetnega polja za dve skrajni legi lopute je podan na Sl. 3.The magnetic circuit of the switch, consisting of the magnetic core of the electromagnet, the magnets on the flap and the air gap between the core and the magnets, is designed and optimized using the 3D finite element method and is adapted to the magnetic properties of the materials used. The magnetic field representation for the two extreme positions of the flap is given in Figs. 3.
Za predmet izuma sta karakteristični tudi dve področji delovanja magnetne sile na loputo prikazovalnika, ki ustvarjata vrtilni moment. Zaradi tega se moment poveča, dodatno pa se še ta poveča zaradi povečanja gostote magnetnega pretoka v prostoru med magnetnim jedrom in magneti na loputi, kar je posledica U oblike jedra, pri katerem je manjši raztres magnetnega polja (Sl. 3) kot pa je pri paličasti obliki. To omogoča izdelavo večjih točk prikazovalnika. Povečanje vrtilnega momenta poveča tudi stabilnost lopute prikazovalnika v želenem »ON« ali »OFF« položaju. Zaradi zmanjšanega raztresanja magnetnega polja se zmanjša tudi medsebojni magnetni vpliv sosednjih točk prikazovalnika, kar omogoča enako orientacijo magnetov loput vseh točk prikazovalnika.The object of the invention is also characterized by two fields of action of magnetic force on the hatch of the display, which generate torque. As a result, the momentum increases and is further increased due to the increase in the magnetic flux density in the space between the magnetic core and the magnets on the flap, which is due to the U-shape of the nucleus, in which the magnetic field scattering is smaller (Fig. 3). rod-shaped. This makes it possible to produce larger display points. Increasing the torque also increases the stability of the display flap in the desired "ON" or "OFF" position. Due to the reduced scattering of the magnetic field, the mutual magnetic influence of adjacent points of the display is also reduced, which enables the same orientation of the flap magnets of all points of the display.
Menjavanje položaja lopute je izvedeno s tokovnim impulzom skozi tuljavo 5 elektromagneta, katerega jedro se ob vsaki menjavi položaja lopute premagneti. S tem postane prvotno stabilna lega lopute nestabilna, zaradi česar se loputa prevrne v nasprotni položaj, ki je zaradi premagnetenja jedra tuljave postal stabilen. Na ta način je dosežena stabilnost novega položaja lopute tudi po končanem tokovnem impulzu tuljave elektomagneta.The flap position is changed by a current pulse through the coil 5 of the solenoid whose core is magnetized every time the flap position is changed. This makes the initially stable position of the flap unstable, causing the flap to flip into the opposite position, which has become stable due to the magnetization of the coil core. In this way, the stability of the new flap position is achieved even after the electromagnet coil current pulse is completed.
PRIMEREXAMPLE
Elektromagnetni prikazni pano je tipično sestavljen iz števila pretežno kvadratnih prikaznih točk sestavljenih v prikazno matriko. Zaradi velikega števila prikaznih točk se običajni izdelovalni koncept, ki temelji na montaži delov posamezne točke direktno na tiskano vezje prikaznega panoja, izkaže kot kompleksen in drag postopek. Da se zmanjša stroške in poenostavi izdelava je 7 prikaznih točk združeno v monolitni blok, ki je osnovni element za izdelavo prikazne matrike. Monolitni blok 1 (S1.2) je izdelan iz črne mat plastike na stroju za brizganje plastike. Po brizganju blok pobarvamo s kontrastno barvo na la površinah. Potem vstavimo električne kontakte 4a in 4b v ležišča lc in ld. Naslednja operacija je navitje 7 tuljav na monolitni blok 1 in spajkanje koncev navitja na priključne pine. Temu sledi še testiranje ohmske upornosti navitja.An electromagnetic display panel typically consists of a number of predominantly square display points assembled into a display array. Due to the large number of display points, a conventional manufacturing concept based on mounting parts of a single point directly to the printed circuit board of the display panel proves to be a complex and expensive process. To reduce costs and simplify production, 7 display points are combined into a monolithic block, which is the basic element for creating a display array. Monolithic block 1 (S1.2) is made of black matte plastic on a plastic injection molding machine. After injection, the block is painted with a contrasting color on the surfaces. Then insert the electrical contacts 4a and 4b into the lc and ld bearings. The next operation is winding 7 coils onto monolithic block 1 and soldering the winding ends to the connecting pins. This is followed by testing the ohmic resistance of the winding.
Magnetno jedro 3u ima obliko črke U in je izdelano iz cilindrične palice poltrdega magnetnega materiala, ki dobi zahtevane magnetne lastnosti po ustrezni termični obdelavi. En krak jedra je vstavljen v tuljavo 5, drugi krak pa je vstavljen v blok 1 in ga s tem pozicioniramo. Konca obeh krakov jedra ležita pod rotacijsko osjo lopute 2 in sta orientirana paralelno z omenjeno osjo.The 3u magnetic core is U-shaped and is made of a cylindrical rod of semi-solid magnetic material, which obtains the required magnetic properties after proper thermal treatment. One arm of the core is inserted into coil 5 and the other arm is inserted into block 1 to position it. The ends of the two arms of the core lie below the rotational axis of the flap 2 and are oriented parallel to said axis.
Rotirajoče lopute 2 izdelamo posebej. Ker morajo lopute imeti vgrajena trajna magneta 2ci in 2c2, so lopute izdelane po postopku dvokomponentnega brizganja. Prav tako kot monolitni blok 1, pobarvamo eno površino lopute 2a z enako svetlo flourescentno barvo medtem, ko druga stran lopute 2b ostane nepobarvana - črna mat plastika.Rotary flaps 2 are manufactured separately. Since the flaps must have permanent magnets 2ci and 2c 2 installed, the flaps are manufactured by a two-component injection molding process. Just like monolithic block 1, we paint one surface of flap 2a with the same bright fluorescent color while the other side of flap 2b remains unpainted - black matt plastic.
Trajni magnet na loputi je sestavljen iz dveh segmentov 2ci in 2c2. Magnetno polje teh segmentov je orientirano antiparalelno in hkrati pravokotno na rotacijsko os 2d in na površino lopute. Magneta sta izdelana iz plastično vezanega NdFeB materiala ali iz plastično vezanega feritnega materiala. Lopute izdelamo s postopkom dvokomponentnega brizganja, pri čemer sta najprej izdelana magneta, nato pa še zapolnimo ostali prostor lopute s plastiko. Magneta brizgamo v prisotnosti magnetnega polja, ki ustvari anizotropične magnetne lastnosti magnetov, poveča gostoto magnetnega toka in tako posledično poveča magnetni moment. S tem procesom izdelave dobimo zadostni magnetni moment na loputi kljub temu, da uporabljamo plastično vezan trdo magnetni material, ki ima slabše magnetne lastnosti od sintranih magnetov. Namagneten) e plastično vezanega ferita je izvedeno s permanentnimi magneti iz redkih zemelj, ki so vgrajeni v orodje za brizganje. V primeru uporabe plastično vezanih NdFeB magnetov pa namagneten)e izvedemo s posebno oblikovano tokovno zanko vgrajeno v orodje za brizganje s kratkim impulzom velikega električnega toka. Namagnetenje plastično vezanih feritnih magnetov je izvedeno hkrati za vseh 14 loput v mreži (S1.4). Vse lopute na prikazu imajo enako magnetno usmerjenost za razliko od rešitve z ravnim magnetnim jedrom US 6,603458. To znatno poenostavi izdelavo in olajša avtomatizacijo procesa izdelave.The permanent magnet on the flap consists of two segments 2ci and 2c 2 . The magnetic field of these segments is oriented antiparallel and at the same time perpendicular to the rotational axis 2d and to the surface of the flap. The magnets are made of plastic bonded NdFeB material or plastic bonded ferrite material. The flaps are produced by a two-component injection molding process, with magnets first made and then the rest of the flap space filled with plastic. The magnet is injected in the presence of a magnetic field, which creates the anisotropic magnetic properties of the magnets, increases the magnetic flux density, and consequently increases the magnetic moment. With this fabrication process, sufficient magnetic moment on the flap is obtained despite the use of plastic bonded hard magnetic material which has worse magnetic properties than sintered magnets. The magnetically bonded plastic ferrite is made with permanent earth permanent magnets that are integrated into the injection molding tool. In the case of the use of plastic-bonded NdFeB magnets, magnetization is performed with a specially designed current loop built into the short-pulse high-current injection molding tool. The magnetization of plastic bonded ferrite magnets was performed simultaneously for all 14 flaps in the grid (S1.4). All the flaps in the display have the same magnetic orientation as opposed to the US 6,603458 flat magnetic core solution. This greatly simplifies production and facilitates the automation of the manufacturing process.
Da dosežemo najbolj ekonomično izdelavo je 14 loput izdelano hkrati v dveh vrstah po 7 loput (glej Sl. 4), ki so povezani v mrežo z distančniki 19 in so med seboj oddaljene točno toliko kot so oddaljeni ležaji osi lf in lg na monolitnem bloku 1, daje optimiran proces končne montaže loput. Prav tako kot monolitni blok 1, pobarvamo eno površino lopute 2a z enako svetlo flourescentno barvo medtem, ko druga stran lopute 2b ostane nepobarvana črna mat plastika. Po barvanju loput v mreži, odrežemo distančnike 19 in dve vrsti po 7 loput 2 simultano vstavimo v ležaje lf in lg 14 rotacijskih osi na dveh blokih 1.To achieve the most economical fabrication, 14 flaps are made simultaneously in two rows of 7 flaps (see Fig. 4), which are connected to the grid by spacers 19 and are spaced exactly as far apart as the remote axes lf and lg on the monolithic block 1 , gives an optimized process for the final assembly of the flaps. Just like monolithic block 1, we paint one surface of flap 2a with the same bright fluorescent color while the other side of flap 2b remains unpainted black matte plastic. After painting the flaps in the grid, cut off spacers 19 and insert two rows of 7 flaps 2 simultaneously into the bearings lf and lg of 14 rotary axes on two blocks 1.
Claims (10)
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SI200400127A SI21771A (en) | 2004-04-28 | 2004-04-28 | Electromagnetic display drive system |
RU2004134003/09A RU2288510C2 (en) | 2004-04-28 | 2004-11-22 | Electromagnetic system of display pixel drive |
CN 200410099759 CN1691095A (en) | 2004-04-28 | 2004-12-31 | Electro magnetic display pixel driving system |
EP05007967A EP1591983A3 (en) | 2004-04-28 | 2005-04-12 | Electro magnetic display pixel driving system |
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