SI26360A - Protective assembly based on electrical resistance fuse with melting element - Google Patents

Protective assembly based on electrical resistance fuse with melting element Download PDF

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Publication number
SI26360A
SI26360A SI202200071A SI202200071A SI26360A SI 26360 A SI26360 A SI 26360A SI 202200071 A SI202200071 A SI 202200071A SI 202200071 A SI202200071 A SI 202200071A SI 26360 A SI26360 A SI 26360A
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Slovenia
Prior art keywords
housing
fuse
cover
slots
side walls
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SI202200071A
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Slovenian (sl)
Inventor
Matej Kavšek
Said Beganović
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Eti Elektroelement, D.O.O.
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Application filed by Eti Elektroelement, D.O.O. filed Critical Eti Elektroelement, D.O.O.
Priority to SI202200071A priority Critical patent/SI26360A/en
Priority to SI202200074A priority patent/SI26361A/en
Priority to PCT/SI2022/000005 priority patent/WO2023214940A1/en
Priority to PCT/SI2022/000007 priority patent/WO2023214941A1/en
Publication of SI26360A publication Critical patent/SI26360A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/545—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers with pivoting fuse carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/165—Casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/47—Means for cooling

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  • Fuses (AREA)

Abstract

Namen izuma je izboljšati učinkovitost odvajanja toplote iz notranjosti bodisi za prejem ene same ali dveh med seboj ločenih ali mehansko povezanih varovalk (3, 3') prirejenega ohišja (1) zaščitnega sklopa (100) ob sočasnem preprečevanju negativnih učinkov v notranjosti ohišja (1) generirane toplote na material samega ohišja (1), in sicer z namenom ohranitve dolgotrajne in učinkovite izolacijske sposobnosti ohišja (1). V ta namen je ohišje (1) na svojih bočnih stenah (12, 13) opremljeno s prekinjenimobrobkom (19', 19") in z nizoma med seboj enakomerno razmaknjenih hladilnih rež (12', 12'', 12'''; 13', 13'', 13'''), tako da sta niza na eni in drugi bočni steni (12, 13) vzdolž ohišja (1) med seboj razmaknjena za vnaprej določeno razdaljo (S). Po drugi strani pa bočni steni (24, 25) z ohišjem (1) zasukljivo povezanega pokrova (2) tvorijo med seboj enakomerno razmaknjeni nosilni trakovi (24', 24'', 24'''; 25', 25'', 25'''), pri čemer so trakovi (24', 24'', 24'''; 25', 25'', 25''') v eni in drugisteni (24, 25) v vzdolžni smeri ohišja (1) prav tako med seboj zamaknjeni, tako da se pri zaprtem pokrovu (2) nahajajo v območjih med hladilnimi režami (12', 12'', 12'''; 13', 13'', 13''') bočnih sten (12, 13) ohišja (1).The purpose of the invention is to improve the efficiency of heat dissipation from the inside, either for receiving a single or two mutually separated or mechanically connected fuses (3, 3') of the modified housing (1) of the protective assembly (100) while simultaneously preventing negative effects inside the housing (1) generated heat to the material of the housing (1) itself, namely with the aim of maintaining the long-term and effective insulating capacity of the housing (1). For this purpose, the housing (1) is equipped on its side walls (12, 13) with an interrupted edge (19', 19") and with sets of equally spaced cooling slots (12', 12'', 12'''; 13 ', 13'', 13'''), so that the arrays on one and the other side wall (12, 13) along the housing (1) are spaced from each other by a predetermined distance (S). On the other hand, the side walls ( 24, 25) with the housing (1) of the rotatably connected cover (2) are formed by equally spaced supporting strips (24', 24'', 24'''; 25', 25'', 25''), whereby the strips (24', 24'', 24'''; 25', 25'', 25'') in one and the other side (24, 25) in the longitudinal direction of the housing (1) are also offset from each other, so that when the cover (2) is closed, they are located in the areas between the cooling slots (12', 12'', 12'''; 13', 13'', 13''') of the side walls (12, 13) of the housing (1) .

Description

Zaščitni sklop na osnovi električne uporovne varovalke s talilnim elementomProtection assembly based on an electric resistance fuse with a fusible element

Izum se nanaša na zaščitni sklopa na osnovi električne uporovne varovalke s talilnim elementom. Po Mednarodni klasifikaciji patentov so izumi te vrste razvrščeni na področje elektrotehnike, namreč k osnovnim električnim komponentam, konkretno pa k zaščitnim napravam, pri katerih električni tok teče skozi del taljivega materiala, tako da se ob pojavu prekomernega toka električni tok prekine zahvaljujoč premeščanju taljivega materiala, še zlasti pa k ohišjem tovrstnih naprav.The invention relates to a protective assembly based on an electric resistance fuse with a fusible element. According to the International Classification of Patents, inventions of this type are classified in the field of electrical engineering, namely to basic electrical components, and specifically to protective devices in which the electric current flows through a part of the fusible material, so that when an excessive current occurs, the electric current is interrupted thanks to the displacement of the fusible material, and especially to the housings of such devices.

Pri tem je izum osnovan na problemu, kako izboljšati učinkovitost odvajanja toplote iz notranjosti bodisi za prejem ene same ali dveh med seboj ločenih ali mehansko povezanih varovalk prirejenega ohišja zaščitnega sklopa prej omenjene vrste ob sočasnem preprečevanju negativnih učinkov v notranjosti ohišja generirane toplote na material samega ohišja z namenom ohranitve dolgotrajne in učinkovite izolacijske sposobnosti ohišja.Here, the invention is based on the problem of how to improve the efficiency of heat removal from the inside, either for the reception of a single or two mutually separated or mechanically connected fuses of a modified housing of a protective assembly of the aforementioned type, while at the same time preventing negative effects inside the housing of the generated heat on the material of the housing itself in order to maintain the long-term and effective insulating capacity of the housing.

Zaščitni sklop na osnovi električne uporovne varovalke s talilnim elementom je opisan v EP 0 718 862 in obsega ohišje s pokrovom, v katerega je vgradljiva električna uporovna varovalka s talilnim elementom. Ohišje v osnovi sestoji iz električno neprevodnega materiala in je na svoji hrbtni strani opremljeno z nasedom in zaskočnim elementom za pritrditev ohišja na standardno priključno letev. Ohišje je na svoji pročelni strani odprto in prirejeno za prejem omenjenega pokrova, ki prav tako v osnovi sestoji iz električno neprevodnega materiala in je k ohišju prigrajen zavihtljivo, obenem pa se ohišju prilega, tako da ga je možno bodisi odvihteti v smeri vstran od ohišja in s tem omogočiti dostop v notranjost ohišja, ali pa z zavihtenjem v nasprotno smer zagotoviti zaprtje ohišja in prileganje pokrova samemu ohišju. Razen tega sta na zunanji površini ohišja predvidena električno prevodna priključka, preko katerih je zaščitni sklop povezljiv v vsakokraten električni tokokrog. Bočni steni ohišja sta načeloma ravni in med seboj vzporedni, kar omogoča vgradnjo več ohišij drugo ob drugem na taisto priključno letev. Omenjeni pokrov je prirejen za prejem električne uporovne varovalke s talilnim elementom, in sicer standardne varovalke s cilindričnim cevastim električno neprevodnim keramičnim okrovom, ki je na obeh koncih zaprt z električno prevodnima okovoma, ki sta med seboj električno povezana preko talilnega elementa, ki poteka po notranjosti omenjenega cevastega okrova varovalke. Kadar je pokrov odvihten iz ohišja, je možno vanj vstaviti ali iz njega odstraniti omenjeno varovalko, ki v takem primeru ni povezana z električnim tokokrogom, v katerega je vgrajen zaščitni sklop. V notranjosti ohišja sta na voljo električno prevodna kontakta, v katera sta vsak zase z zaskočenjem vstavljiva omenjena električno prevodna okova varovalke in ki sta vsak zase električno povezana s po enim izmed omenjenih električno prevodnih priključkov na zunanji površini ohišja in s tem tudi električno povezljiva v vsakokraten električni tokokrog. Po zaprtju pokrova je ohišje zaprto, pri čemer se pokrov popolnoma prilega ohišju, varovalka v notranjosti pokrova oz. ohišja pa je vključena v električni tokokrog zahvaljujoč zaskočenju njenih električno prevodnih okovov v kontakta v notranjosti ohišja. Omenjena kontakta sta lahko zasnovana bodisi v obliki polkrožno ukrivljenih kovinskih trakov ali iz v obliko črke U ukrivljenega električno prevodnega traku, kar je predlagano npr. v US 6,692,315 BI, ali pa kot dvojica med seboj razklenljivih elastično vpetih naslonov, kakor je to predlagano v WO 2007/131868 Al.A protective assembly based on an electric resistance fuse with a fusing element is described in EP 0 718 862 and comprises a housing with a cover in which an electric resistance fuse with a fusing element can be installed. The housing basically consists of an electrically non-conductive material and is equipped on its back with a catch and a snap element for attaching the housing to a standard terminal strip. The housing is open on its front side and adapted to receive the mentioned cover, which also basically consists of an electrically non-conductive material and is attached to the housing in a hinged manner, and at the same time fits into the housing, so that it can either be swung away from the housing and thereby enabling access to the inside of the case, or by swinging in the opposite direction, ensure the case is closed and the cover fits the case itself. In addition, two electrically conductive connectors are provided on the outer surface of the housing, through which the protective assembly can be connected to the respective electrical circuit. The side walls of the housing are generally flat and parallel to each other, which enables the installation of several housings side by side on the same connection strip. Said cover is adapted to receive an electric resistance fuse with a fusing element, namely a standard fuse with a cylindrical tubular electrically non-conductive ceramic cover, which is closed at both ends by electrically conductive fittings, which are electrically connected to each other via a fusing element running along the inside said tubular fuse cover. When the cover is lifted from the housing, it is possible to insert or remove the mentioned fuse, which in such a case is not connected to the electrical circuit in which the protective assembly is installed. There are electrically conductive contacts inside the housing, into which the aforementioned electrically conductive fuse fittings can each be inserted by snapping, and which are each electrically connected to one of the aforementioned electrically conductive connectors on the outer surface of the housing and thus also electrically connectable to each electrical circuit. After closing the cover, the case is closed, whereby the cover fits perfectly into the case, the fuse inside the cover or and the housing is included in the electrical circuit thanks to the snapping of its electrically conductive fittings into the contacts inside the housing. The mentioned contacts can be designed either in the form of semicircular bent metal strips or from an electrically conductive strip bent in the shape of the letter U, which is suggested for example in US 6,692,315 BI, or as a pair of elastically clamped backs that can be opened from each other, as proposed in WO 2007/131868 Al.

Električna uporovna varovalka je ena izmed standardiziranih varovalk po standardu IEC 60947-1:2004 (E) oz. 60947-1:2020, ena izmed izpeljank pa je opisana tudi v WO 2021/101453 Al.The electric resistance fuse is one of the standardized fuses according to IEC 60947-1:2004 (E) or 60947-1:2020, and one of the derivatives is also described in WO 2021/101453 Al.

Pri rešitvi zaščitnega sklopa po EP 0 718 862 gre za razmeroma obsežno ohišje, ki je prirejeno za sodelovanje z razmeroma majhno varovalko s temu primemo nizko nazivno vrednostjo. V takem primeru se med prevajanjem električnega toka skozi talilni element varovalke v slednji sicer generira določena količina toplote, ki pa je praktično zanemarljiva in ne privede do znatnega povišanja temperature v ohišju zaščitnega sklopa, še posebej pa ne do tolikšnega, da bi to lahko privedlo do strukturnih sprememb v materialu ohišja, kar bi lahko imelo za posledico poslabšanje izolacijske sposobnosti samega ohišja. Zato sta bočni steni ohišja ravni, gladki in med seboj vzporedni, kar omogoča nameščanje več ohišij drugo ob drugem na taisto priključno letev.In the solution of the protective assembly according to EP 0 718 862, it is a relatively large housing, which is adapted to cooperate with a relatively small fuse, thus taking a low nominal value. In such a case, during the conduction of the electric current through the fuse's fusing element, a certain amount of heat is generated in the latter, but it is practically negligible and does not lead to a significant increase in the temperature in the protective assembly housing, especially not to such an extent that this could lead to structural changes in the housing material, which could result in a deterioration of the insulation capacity of the housing itself. That is why the side walls of the housing are flat, smooth and parallel to each other, which enables the installation of several housings side by side on the same connection rail.

Po drugi strani pa je pri rešitvi iz WO 2007/131868 Al razvidno, da je ohišje zaradi možnosti odvajanja toplote iz njegove notranjosti na svojih bočnih stenah opremljeno s skoznjimi prehodi oz. režami. Če po vgradnji varovalke s talilnim elementom pride do generiranja znatnejše količine toplote, se toplota deloma s prevajanjem, deloma pa z odvajanjem preko izstopajočega zraka, odvaja iz notranjosti ohišja navzven. Vendar pa je tak ukrep pogosto nezadosten, in sicer iz več razlogov. Razlog za to so okoliščine, ki se v praksi pogosto pojavijo zaradi vedno višjih zahtev glede vgradnje vse bolj zmogljivih varovalk in tudi zaradi namestitve več ohišij drugo ob drugem na taisto priključno letev. V takem primeru se pri tesno drugo ob drugem nameščenih ohišjih omenjene reže vsakokrat sosednjih ohišij med seboj prekrivajo, tako da vroč zrak iz notranjosti enega ohišja po izstopu skozi vsakokratno režo lahko teče kvečjemu skozi režo sosednjega ohišja v notranjost slednjega. Če je tudi v notranjosti sosednjega ohišja temperatura povišana, hlajenje ne enega ne drugega ohišja v takem primeru praktično ni možno. Zlasti v enosmernih električnih tokokrogih, npr. na področju fotovoltaike, se dogaja, da tokokrog dlje časa obratuje v razmeroma zahtevnih okoliščinah, ko so električne obremenitve razmeroma visoke, vendar še vedno v mejah regularnega obratovanja, torej brez kratkega stika ali preobremenitev v smislu preseganja vnaprej določenih mejnih vrednosti električnega toka, obenem pa je lahko tudi temperatura okolice razmeroma visoka. V takih primerih prihaja do znatnega generiranja toplote v območju varovalke v notranjosti ohišja, odvajanje toplote ven iz ohišja pa je močno oteženo. V takem primeru so stene ohišja še zlasti v območjih v bližini varovalke izpostavljene razmeroma visokim temperaturam. Se zlasti v primeru dolgotrajnejše izpostavljenosti razmeroma visokim temperaturam, v materialu ohišja lahko pride celo do spremembe strukture, kar je običajno že na prvi pogled vidno kot sprememba barve, v fizikalnem smislu pa to privede tudi do spremembe trdnosti materiala ter hrapavosti in poroznosti površine, posledično pa tudi spremembe električne prevodnosti oz. prebojnosti. Sprememba hrapavosti namreč poveča možnost zadrževanja vlage in prahu na površini, kar lahko prevede do pojava električne prevodnosti preko same površine ohišja. V tem pogledu so najbolj izpostavljena prav območja stene ohišja med omenjenimi režami, v katerih so tudi spremembe že na pogled najbolj opazne. Zato v praksi varnostna pravila narekujejo, da je potrebno takoj po identifikaciji vsakršne spremembe barve, npr. porumenelosti, površine ohišja nemudoma zamenjati celoten zaščitni sklop.On the other hand, in the solution from WO 2007/131868 Al, it can be seen that the housing is equipped with through passages on its side walls due to the possibility of heat dissipation from its interior. slits. If a significant amount of heat is generated after installing a fuse with a fusible element, the heat is removed from the inside of the housing to the outside, partly by conduction, and partly by exhausting it through the escaping air. However, such a measure is often insufficient for several reasons. The reason for this is the circumstances that often arise in practice due to the ever-increasing requirements regarding the installation of more and more powerful fuses and also due to the installation of several housings side by side on the same terminal strip. In such a case, when the housings are installed close to each other, the aforementioned gaps of the neighboring housings overlap each other, so that the hot air from the inside of one housing, after exiting through each gap, can at most flow through the gap of the neighboring housing into the interior of the latter. If the temperature inside the adjacent case is also elevated, cooling of neither case is practically not possible in such a case. Especially in DC electrical circuits, e.g. in the field of photovoltaics, it happens that the circuit operates for a long time in relatively demanding circumstances, when the electrical loads are relatively high, but still within the limits of regular operation, i.e. without a short circuit or overloads in the sense of exceeding predetermined limit values of the electrical current, and at the same time the ambient temperature can also be relatively high. In such cases, significant heat generation occurs in the fuse area inside the case, and heat dissipation out of the case is greatly hindered. In such a case, the housing walls are exposed to relatively high temperatures, especially in the areas near the fuse. Especially in the case of long-term exposure to relatively high temperatures, there may even be a change in the structure of the housing material, which is usually visible at first glance as a change in color, but in a physical sense this also leads to a change in the strength of the material and the roughness and porosity of the surface, as a result as well as changes in electrical conductivity or penetration. The change in roughness increases the possibility of retaining moisture and dust on the surface, which can lead to the appearance of electrical conductivity through the surface of the case itself. In this regard, the areas of the housing wall between the mentioned slots are the most exposed, in which the changes are also most noticeable at a glance. Therefore, in practice, safety rules dictate that immediately after identification of any color change, e.g. yellowing of the housing surface, immediately replace the entire protective assembly.

Pričujoči izum se nanaša na zaščitni sklop na osnovi električne uporovne varovalke s talilnim elementom, pri čemer tovrsten sklop v splošnem obsegaThe present invention relates to a protective assembly based on an electric resistance fuse with a fusible element, whereby this type of assembly generally comprises

- škatlasto zasnovano ohišje, ki v osnovi sestoji iz električno neprevodnega materiala in je na svoji pročelni strani odprto in prirejeno za prejem pokrova, v katerega je vstavljiva omenjena električna uporovna varovalka, in ki je nadalje na svoji hrbtni steni opremljeno z zaskočnim nasedom za pritrditev ohišja na primemo priključno letev in ki na vsaki izmed svojih dominantnih, v splošnem ravnih in gladkih bočnih sten obsega niz med seboj enakomerno razmaknjenih hladilnih rež, razen tega pa je ohišje v območju izven omenjene odprte pročelne strani opremljeno z električno prevodnima priključnima sponkama, prirejenima za vgradnjo zaščitnega sklopa v vsakokraten električni tokokrog, poleg tega pa sta v notranjosti omenjenega ohišja na primernih lokacijah predvidena električno prevodna kontaktna naseda, ki sta prirejena za prejem in zaskočenje omenjene varovalke in ki sta vsak zase električno povezana s po eno izmed omenjenih priključnih sponk na ohišju;- a box-shaped housing, which basically consists of an electrically non-conductive material and is open on its front side and adapted to receive a cover into which the aforementioned electrical resistance fuse can be inserted, and which is further equipped on its back wall with a snap-on catch for attaching the housing for example, a connection strip and which on each of its dominant, generally flat and smooth side walls comprises a series of evenly spaced cooling slits, and in addition, the housing in the area outside the said open front side is equipped with electrically conductive connection terminals adapted for installation of the protective assembly into each electrical circuit, and in addition, two electrically conductive contact pads are provided inside the said housing at appropriate locations, which are adapted to receive and latch the said fuse and which are each electrically connected to one of the said connection terminals on the housing;

- električno uporovno varovalko s cilindričnim cevastim okrovom iz električno izolativnega materiala, ki je na obeh koncih zaprt z električno prevodnima okovoma, med katerima je v notranjosti omenjenega okrova vgrajen z vsakim izmed njiju električno povezan električni uporovni talilni element;- an electric resistance fuse with a cylindrical tubular casing made of an electrically insulating material, which is closed at both ends with electrically conductive fittings, between which an electric resistance melting element electrically connected to each of them is built into the interior of the mentioned casing;

- pokrov, ki sestoji iz električno neprevodnega materiala in je dovolj tog, da je je v vrtišču na ohišju zasukljivo vgrajen v območju odprte pročelne strani ohišja in prirejen za prejem vsakokratne električne varovalke na tak način, da je po odvihtenju pokrova v smeri ven iz ohišja omogočen dostop do notranjosti ohišja in je v tem položaju pokrova vsakokratna varovalka izključena iz vsakokratnega električnega tokokroga ter bodisi v pokrov vstavljiva ali iz njega odstranljiva, medtem ko se po zavihtenju pokrova v smeri proti ohišju pokrov popolnoma prilega ohišju, obenem pa je v njem vstavljena varovalka zahvaljujoč zaskočenju v omenjena kontaktna naseda v notranjosti ohišja preko priključnih sponk na ohišju električno povezana v vsakokraten električni tokokrog, pri čemer je omenjena električna uporovna varovalka s cilindričnim cevastim okrovom iz električno izolativnega materiala, ki je na obeh koncih zaprt z električno prevodnima okovoma, v območju katerih je omenjena varovalka zaskočljiva v omenjena električno prevodna kontaktna naseda v notranjosti ohišja in med katerima je v notranjosti omenjenega okrova vgrajen z vsakim izmed njiju električno povezan smiselno v vzdolžni geometrijski osi potekajoč talilni element varovalke, in pri čemer pa so omenjene hladilne oz. prezračevalne reže v bočnih stenah ohišja razporejene zgolj preko osrednjega območja vsakokratne stene in na zadostni oddaljenosti od električno prevodnih okovov varovalke in tudi od omenjenih kontaktnih nasedov za prejem varovalke v ohišju.- a cover that consists of an electrically non-conductive material and is rigid enough to be rotatably installed in the pivot on the housing in the area of the open front side of the housing and adapted to receive the electrical fuse each time in such a way that after the cover is lifted, it is in the direction out of the housing access to the inside of the housing is enabled, and in this position of the cover, each fuse is disconnected from each electrical circuit and can either be inserted into or removed from the cover, while after turning the cover in the direction towards the housing, the cover fits perfectly into the housing, and at the same time, the fuse is inserted in it thanks to snapping into the said contact jam inside the housing via the connection terminals on the housing electrically connected to each electrical circuit, the said electric resistance fuse with a cylindrical tubular housing made of electrically insulating material, which is closed at both ends with electrically conductive fittings, in the area of which the said fuse is snapable into the said electrically conductive contact socket inside the housing and between which a fuse fuse element running along the longitudinal geometric axis is installed in the inside of the said casing and is electrically connected to each of them, and in which the said cooling or ventilation slits in the side walls of the housing arranged only over the central area of each wall and at a sufficient distance from the electrically conductive fittings of the fuse and also from the mentioned contacts for receiving the fuse in the housing.

Po izumu je v kontekstu reševanja uvodoma zastavljenega problema predvideno, da je vsakokraten niz med seboj enakomerno razmaknjenih hladilnih oz. prezračevalnih rež vnaprej določene in enakomerne širine vsakokratne reže na omenjenih bočnih stenah med pročelno stranjo in hrbtno steno ohišja tako zasnovan, da širina vsakokratne reže ne presega medsebojne oddaljenosti med vsakokrat sosednjima režama. Nadalje je predvideno, da sta oba vsakokrat razpoložljiva niza rež na bočnih stenah, namreč rež na eni bočni steni in rež na preostali bočni steni, v vzdolžni smeri ohišja, namreč smiselno v vzdolžni smeri osrednje geometrijske osi varovalke, med seboj zamaknjena za vnaprej določeno razdaljo, ki pa je vsakokrat tako izbrana, da se pri vnaprej določeni širini rež in vsakokrat izbrani razdalji med vsakokrat sosednjima režama reže na eni bočni steni in reže na preostali bočni steni med seboj ne prekrivajo, tako da se tudi po namestitvi dveh ohišij drugo ob drugega na taisto priključno letev reže na bočni steni prvega ohišja in reže na proti njej obrnjeni bočni steni drugega ohišja med seboj ne prekrivajo. Še nadalje je po izumu predvideno, da je vsaka izmed sicer ravnih in gladkih bočnih sten vsakokratnega ohišja opremljena z navzven štrlečim obrobkom, ki je prirejen za naleganje na smiselno enakem obrobku vsakokrat sosednjega ohišja, pri tem pa je vsakokraten obrobek prekinjen v vsaj dveh med seboj nasprotnih območjih, velikost omenjenih prekinitev obrobka in tudi sama višina obrobka pa sta tolikšni, da je v območju prekinitve obrobka zagotovljen neoviran prehod skozi hladilne oz. prezračevalne reže v bočnih stenah ohišja pretakajočega se zraka.According to the invention, in the context of solving the problem posed in the introduction, it is envisaged that each set of evenly spaced cooling or of ventilation slits of a predetermined and uniform width of each slit on the mentioned side walls between the front side and the back wall of the housing designed in such a way that the width of each slit does not exceed the mutual distance between each adjacent slit. It is further provided that the two sets of slots on the side walls available each time, namely the slots on one side wall and the slots on the remaining side wall, in the longitudinal direction of the housing, namely meaningfully in the longitudinal direction of the central geometric axis of the fuse, are offset from each other by a predetermined distance , which is each time chosen in such a way that, with a predetermined width of the slots and a distance between adjacent slots each time selected, the slots on one side wall and the slots on the remaining side wall do not overlap each other, so that even after installing two cases next to each other on the same connecting strip, the slots on the side wall of the first housing and the slots on the opposite side wall of the second housing do not overlap with each other. Furthermore, according to the invention, it is provided that each of the otherwise flat and smooth side walls of each case is equipped with an outwardly projecting edge, which is adapted to rest on a meaningfully identical edge of each adjacent case, while each edge is interrupted in at least two of them opposite areas, the size of the mentioned border interruptions and the height of the border itself are such that in the area of the border interruption, an unobstructed passage through the cooling or ventilation slits in the side walls of the casing of the flowing air.

V kontekstu rešitve uvodoma zastavljenega problema pa je po izumu še nadalje predvideno, da je za prejem varovalke prirejeni pokrov sicer v osnovi škatlasto zasnovan in obsega primemo oblikovano, za prileganje ohišju prirejeno in navzven vidno ter z upravljalnim nastavkom opremljeno pročelno steno, v notranjosti ohišja razporejeno in za naleganje varovalke prirejeno hrbtno steno, obenem pa tudi rešetkasto zasnovani bočni steni, ki sta prirejeni za pozicioniranje vsakokratne varovalke v notranjosti pokrova. Pri tem je omenjeno vrtišče pokrova, ki omogoča vihtenje slednjega relativno na ohišje, razporejeno izven območja omenjenih bočnih sten. Po izumu pa je vsaka izmed omenjenih bočnih sten formirana iz niza med seboj vzporedno razmaknjenih in prečno glede na vzdolžno os varovalke potekajočih nosilnih trakov vnaprej določene širine, pri čemer pa omenjena širina vsakega izmed nosilnih trakov ne presega medsebojne oddaljenosti med hladilnimi režami na bočnih stranicah ohišja. Tudi omenjeni nosilni trakovi ene bočne stene so glede na nosilne trakove na preostali bočni steni pokrova v vzdolžni smeri ohišja oz. v smeri vzdolžne geometrijske osi varovalke medsebojno zamaknjeni za vnaprej določeno razdaljo, ki je usklajena z zamikom hladilnih oz. prezračevalnih rež na bočnih stranicah ohišja in je tako izbrana, da se pri zaprtem, v notranjost ohišja zavihtenem pokrovu vsakokraten nosilni trak na pokrovu nahaja v območju med vsakokrat sosednjima hladilnima režama na bočnih stranicah ohišja, oziroma izven območja omenjenih rež na ohišju, tako da med trakovi pokrova in režami na ohišju ni medsebojnega prekrivanja.In the context of the solution to the problem posed in the introduction, according to the invention, it is further provided that the cover adapted to receive the fuse is otherwise basically box-shaped and includes a shaped grip, adapted to fit the housing and externally visible and equipped with a control attachment, a front wall arranged inside the housing and a back wall adapted for fitting the fuse, and at the same time, side walls designed with a grid, which are adapted for positioning each fuse inside the cover. In this case, the pivot of the cover, which enables the latter to be swung relative to the housing, is arranged outside the area of the mentioned side walls. According to the invention, each of the mentioned side walls is formed from a set of support strips of predetermined width, spaced parallel to each other and running transversely to the longitudinal axis of the fuse, and the mentioned width of each of the support strips does not exceed the mutual distance between the cooling slots on the sides of the housing . Even the mentioned support strips of one side wall are in relation to the support strips on the remaining side wall of the cover in the longitudinal direction of the housing or in the direction of the longitudinal geometric axis of the fuse, offset from each other by a predetermined distance, which is coordinated with the offset of the cooling or of the ventilation slots on the sides of the case and is chosen so that when the cover is closed and folded inside the case, each carrying strap on the cover is located in the area between the adjacent cooling slots on the sides of the case, or outside the area of the said slots on the case, so that between there is no overlap between the cover strips and the slots on the case.

Pri eni od izvedb zaščitnega sklopa po izumu je pokrov vstavljiv v ohišje vnaprej določene debeline in prirejen za prejem ene same električne uporovne varovalke s talilnim elementom, ki je s svojima okovoma vstavljiva v kontaktna naseda v ohišju in preko slednjih električno povezljiva s priključnima sponkama na ohišju.In one of the versions of the protective assembly according to the invention, the cover can be inserted into the housing of a predetermined thickness and adapted to receive a single electric resistance fuse with a melting element, which can be inserted with its two fittings into the contact sockets in the housing and via the latter can be electrically connected to the connection terminals on the housing .

Pri nadaljnji izvedbi zaščitnega sklopa po izumu je pokrov vstavljiv v ohišje vnaprej določene debeline in prirejen za prejem dveh druge ob drugi razporejenih ter med seboj po nazivni moči, obliki in dimenzijah enakih električnih uporovnih varovalk s talilnim elementom, ki sta s svojima okovoma vstavljivi v kontaktna naseda v ohišju in preko slednjih električno povezljiva s priključnima sponkama na ohišju.In a further embodiment of the protective assembly according to the invention, the cover can be inserted into a housing of a predetermined thickness and adapted to receive two electric resistance fuses with a fusible element arranged next to each other and of the same nominal power, shape and dimensions, which can be inserted into the contact stuck in the housing and via the latter can be electrically connected to the connection terminals on the housing.

Pri še nadaljnji izvedbi zaščitnega sklopa po izumu je pokrov vstavljiv v ohišje vnaprej določene debeline in prirejen za prejem dveh druge ob drugi razporejenih, med seboj nerazstavljivo in tudi električno povezanih ter med seboj po nazivni moči, obliki in dimenzijah enakih električnih uporovnih varovalk s talilnim elementom, ki sta s svojima okovoma vstavljivi v kontaktna naseda v ohišju in preko slednjih električno povezljiva s priključnima sponkama na ohišju. Pri tem sta vsakokratni varovalki prednostno medsebojno zvarjeni v območju njunih okovov in v položaju, ko se njuna okrova nahajata drug ob drugem in ko sta njuni vzdolžni geometrijski osi med seboj vzporedni, skupna dolžina obeh varovalk v sestavu pa ustreza dolžini vsake izmed njiju.In a further embodiment of the protective assembly according to the invention, the cover can be inserted into a housing of a predetermined thickness and adapted to receive two side-by-side, non-detachable and electrically connected to each other and identical in nominal power, shape and dimensions electric resistance fuses with a fusible element , which can be inserted into the contact slots in the housing with their fittings and can be electrically connected to the connection terminals on the housing via the latter. In this case, each fuse is preferably welded to each other in the area of their fittings and in a position where their casings are located next to each other and when their longitudinal geometric axes are parallel to each other, and the total length of the two fuses in the composition corresponds to the length of each of them.

Izum bo v nadaljevanju obrazložen tudi s primeri izvedbe in v povezavi s priloženo skico, kjerIn the following, the invention will also be explained with implementation examples and in connection with the attached sketch, where

Sl. 1 kaže zaščitni sklop z zaprtim pokrovom in vstavljeno varovalko v narisu;fig. 1 shows the protective assembly with the cover closed and the fuse inserted in the drawing;

Sl. 2 kaže sestav dveh med uporabo neposredno drug ob drugem razporejenih sklopov, in sicer v prerezu v ravnini A - A po Sl. 1;fig. 2 shows the composition of two assemblies arranged directly next to each other during use, namely in a section in the plane A - A according to Fig. 1;

Sl. 3 kaže sklop v prerezu v ravnini C - C po Sl. 1;fig. 3 shows the assembly in section in the plane C - C of FIG. 1;

Sl. 4 kaže sklop z vstavljeno dvojno varovalko in zaprtim pokrovom v prerezu ravnini B - B po Sl. 2;fig. 4 shows the assembly with an inserted double fuse and a closed cover in a cross-section plane B - B according to FIG. 2;

Sl. 5 kaže zaščitni sklop po Sl. 4, tokrat z odprtim pokrovom;fig. 5 shows the protective assembly according to FIG. 4, this time with the lid open;

Sl. 6 kaže povečan prerez v ravnini A - A po Sl. 1;fig. 6 shows an enlarged section in the plane A - A of FIG. 1;

Sl. 7 pa podobno kot Sl. 2 kaže sestav dveh sklopov v prerezu v ravnini A - A po Sl. 1, vendar v povečanem merilu.fig. 7, similarly to FIG. 2 shows the composition of two sets in cross-section in the plane A - A according to Fig. 1, but on an increased scale.

Zaščitni sklop 100 na osnovi električne uporovne varovalke 3, 3' s talilnim elementom v osnovi obsega škatlasto ohišje 1 in pokrov 3, ki je prirejen za vstavljanje enojne varovalke 3 ali tandemske, iz dveh med seboj po velikosti, obliki in nazivni moči enakih ter med seboj tudi električno povezanih in sodelujočih varovalk 3, 3'.The protective assembly 100 based on an electric resistance fuse 3, 3' with a fusible element basically comprises a box-like housing 1 and a cover 3, which is adapted for inserting a single fuse 3 or a tandem fuse, from two of the same size, shape and rated power, and between also electrically connected and cooperating fuses 3, 3'.

Omenjeno škatlasto zasnovano ohišje 1 v osnovi sestoji iz električno neprevodnega materiala in je na svoji pročelni strani 11 odprto in prirejeno za prejem pokrova 2, v katerega je vstavljiva vsakokratna varovalka 3, 3'. Ohišje 1 je na svoji hrbtni steni 14 opremljeno z zaskočnim nasedom 140 za pritrditev ohišja 1 na primerno priključno letev. V praksi se namreč običajno na eno in isto priključno letev tesno drug ob drugem namesti po več zaščitnih sklopov 100 določene širine D, po izbiri v kombinaciji tudi z drugimi električnimi komponentami, če so te opremljene s podobnim nasedom za pritrditev na priključno letev.The above-mentioned box-shaped housing 1 basically consists of an electrically non-conductive material and is open on its front side 11 and adapted to receive a cover 2 into which the individual fuse 3, 3' can be inserted. The housing 1 is equipped on its back wall 14 with a catch 140 for attaching the housing 1 to a suitable connection bar. In practice, several protective assemblies 100 of a certain width D are usually installed closely side by side on one and the same connection strip, optionally in combination with other electrical components, if they are equipped with a similar attachment for attachment to the connection strip.

Omenjeno ohišje 1 sklopa 100 je na vsaki izmed svojih dominantnih, v splošnem ravnih in gladkih bočnih sten 12, 13 opremljeno z nizom med seboj enakomerno razmaknjenih hladilnih oz. prezračevalnih rež 12', 12, 12'; 13', 13, 13' (Sl. 2) . Razen tega je ohišje 1 v območju izven omenjene odprte pročelne strani 11 opremljeno z električno prevodnima priključnima sponkama 15, 16 (Sl. 4), ki sta namenjeni za vgradnjo zaščitnega sklopa 100 v vsakokraten električni tokokrog. Še nadalje sta v notranjosti omenjenega ohišja 1 na primernih lokacijah predvidena električno prevodna kontaktna naseda 17, 18, ki sta prirejena za prejem in zaskočenje omenjene varovalke 3, 3' in ki sta vsak zase električno povezana s po eno izmed omenjenih priključnih sponk 15, 16 na ohišju 1.On each of its dominant, generally flat and smooth side walls 12, 13, said housing 1 of assembly 100 is equipped with a set of equally spaced cooling or ventilation slots 12', 12, 12'; 13', 13, 13' (Fig. 2) . In addition, the housing 1 in the area outside the mentioned open front side 11 is equipped with electrically conductive connection terminals 15, 16 (Fig. 4), which are intended for the installation of the protective assembly 100 in each electrical circuit. Furthermore, in the interior of the mentioned housing 1, there are electrically conductive contact pads 17, 18 provided at suitable locations, which are adapted to receive and engage the mentioned fuse 3, 3' and which are each electrically connected to one of the mentioned connection terminals 15, 16 on housing 1.

Omenjen zaščitni sklop 100 nadalje vključuje električno uporovno varovalko 3, 3' s cilindričnim cevastim okrovom 31 iz električno izolativnega materiala, ki je na obeh koncih zaprt z električno prevodnima okovoma 32, 33, med katerima je v notranjosti omenjenega okrova 31 vgrajen z vsakim izmed njiju električno povezan električni uporovni talilni element.Said protective assembly 100 further includes an electric resistance fuse 3, 3' with a cylindrical tubular casing 31 made of electrically insulating material, which is closed at both ends by electrically conductive fittings 32, 33, between which inside said casing 31 is embedded with each of them electrically connected electrical resistance fusing element.

Zaščitni sklop 100 nadalje obsega pokrov 2, ki tako kot omenjeno ohišje 1 sestoji iz električno neprevodnega materiala in je dovolj tog, da je je v vrtišču 21 na ohišju (1) zasukljivo vgrajen v območju odprte pročelne strani 11 ohišja 1. Pokrov 2 je prirejen za prejem vsakokratne električne varovalke 3, 3' na tak način, daje po odvihtenju pokrova 2 v smeri ven iz ohišja 1 omogočen dostop do notranjosti ohišja 1, v takem položaju pokrova 2 pa je vanj vstavljiva ali po potrebi iz njega tudi odstranljiva varovalka 3, 3' tudi zanesljivo izključena iz vsakokratnega električnega tokokroga. Po drugi strani pa se po zavihtenju pokrova 2 v smeri proti ohišju 1 pokrov 2 popolnoma prilega ohišju 1, obenem pa je v njem vstavljena varovalka 3, 3' zahvaljujoč zaskočenju v omenjena kontaktna naseda 17, 18 v notranjosti ohišja 1 preko priključnih sponk 15, 16 na ohišju 1 električno povezana v vsakokraten električni tokokrog.The protective assembly 100 further comprises a cover 2, which, like the mentioned case 1, consists of an electrically non-conductive material and is rigid enough to be rotatably installed in the pivot 21 on the case (1) in the area of the open front side 11 of the case 1. The cover 2 is adapted for receiving each electrical fuse 3, 3' in such a way that, after the cover 2 is lifted outwards from the housing 1, access to the interior of the housing 1 is enabled, and in this position of the cover 2, the fuse 3 can be inserted into it or, if necessary, also removable from it, 3' is also reliably disconnected from the current electrical circuit. On the other hand, after turning the cover 2 in the direction towards the housing 1, the cover 2 fits perfectly into the housing 1, and at the same time the fuse 3, 3' is inserted in it thanks to its snapping into the mentioned contact recesses 17, 18 inside the housing 1 via the connection terminals 15, 16 on the housing 1 electrically connected in each electric circuit.

Omenjene hladilne oz. prezračevalne reže 12', 12, 12'; 13', 13, 13' v bočnih stenah 12, 13 ohišja 1 so načeloma razporejene preko osrednjega območja vsakokratne stene 12, 13 na zadostni oddaljenosti od električno prevodnih okovov 31, 32 varovalke 3 in kontaktnih nasedov 17, 18 v ohišju 1.The mentioned cold stores or ventilation slots 12', 12, 12'; 13', 13, 13' in the side walls 12, 13 of the housing 1 are in principle arranged over the central area of each wall 12, 13 at a sufficient distance from the electrically conductive fittings 31, 32 of the fuse 3 and contact pads 17, 18 in the housing 1.

Električna uporovna varovalka 3, 3' obsega cilindričen cevast okrov 31 iz električno izolativnega materiala, ki je na obeh koncih zaprt z električno prevodnima okovoma 31, 32, v območju katerih je omenjena varovalka 3, 3' zaskočljiva v omenjena električno prevodna kontaktna naseda 17, 18 v notranjosti ohišja 1 in med katerima je v notranjosti omenjenega okrova 31 vgrajen z vsakim izmed njiju električno povezan smiselno v vzdolžni geometrijski osi 30 potekajoč talilni element varovalke 3,3'.The electric resistance fuse 3, 3' comprises a cylindrical tubular casing 31 made of an electrically insulating material, which is closed at both ends with electrically conductive fittings 31, 32, in the area of which said fuse 3, 3' can be snapped into said electrically conductive contact socket 17, 18 in the interior of the housing 1 and between which a fuse fuse element 3,3' running in the longitudinal geometric axis 30 is installed in the interior of the mentioned cover 31, electrically connected to each of them.

Za sklop 100 po izumu je značilno, daje vsakokraten niz med seboj enakomerno razmaknjenih hladilnih rež 12', 12, 12', 13', 13, 13' vnaprej določene in enakomerne širine W, kar pomeni širino vsakokratne reže (Sl. 6), na omenjenih bočnih stenah 12, 13 med pročelno stranjo 11 in hrbtno steno 14 ohišja 1 tako zasnovan, da širina W vsakokratne reže 12', 12, 12', 13', 13, 13' ne presega medsebojne oddaljenosti L med vsakokrat sosednjima režama 12', 12, 12', 13', 13, 13'. Razen tega sta oba vsakokrat razpoložljiva niza rež 12', 12, 12', 13', 13, 13' na bočnih stenah 12, 13, namreč rež 12', 12, 12' na eni bočni steni 12 in rež 13', 13, 13' na preostali bočni steni 13, v vzdolžni smeri ohišja 1, smiselno v vzdolžni smeri osrednje geometrijske osi 30 varovalke 3, 3', med seboj zamaknjena za vnaprej določeno razdaljo S, ki je vsakokrat tako izbrana, da se pri vnaprej določeni širini W rež 12', 12, 12', 13', 13, 13' in vsakokrat izbrani razdalji L med vsakokrat sosednjima režama 12', 12, 12', 13', 13, 13' reže 12', 12, 12' na eni bočni steni 12 in reže 13', 13, 13' na preostali bočni steni 13 med seboj ne prekrivajo, tako da se tudi po namestitvi dveh ohišij 1 drugo ob drugega (Sl. 2 ali 7) na taisto priključno letev reže 12', 12, 12' na bočni steni 12 prvega ohišja 1 in reže 13', 13, 13' na proti njej obrnjeni bočni steni 13 drugega ohišja med seboj ne prekrivajo.It is characteristic of the assembly 100 according to the invention that it provides each set of evenly spaced cooling slots 12', 12, 12', 13', 13, 13' of predetermined and uniform width W, which means the width of each slot (Fig. 6), on the mentioned side walls 12, 13 between the front side 11 and the back wall 14 of the housing 1, designed so that the width W of each slot 12', 12, 12', 13', 13, 13' does not exceed the mutual distance L between each adjacent slot 12 ', 12, 12', 13', 13, 13'. Apart from that, both sets of slots 12', 12, 12', 13', 13, 13' are available on the side walls 12, 13, namely slots 12', 12, 12' on one side wall 12 and slots 13', 13 , 13' on the remaining side wall 13, in the longitudinal direction of the housing 1, i.e. in the longitudinal direction of the central geometric axis 30 of the fuse 3, 3', offset from each other by a predetermined distance S, which is each time selected so that at a predetermined width W slots 12', 12, 12', 13', 13, 13' and each time selected distances L between adjacent slots 12', 12, 12', 13', 13, 13' slots 12', 12, 12' on one side wall 12 and the slots 13', 13, 13' on the remaining side wall 13 do not overlap with each other, so that even after two housings 1 are placed next to each other (Fig. 2 or 7) on the same connection rail, the slots 12' 12, 12' on the side wall 12 of the first housing 1 and the slots 13', 13, 13' on the facing side wall 13 of the second housing do not overlap each other.

Se nadalje je vsaka izmed sicer ravnih in gladkih bočnih sten 12, 13 vsakokratnega ohišja 1 opremljena z navzven štrlečim obrobkom 19', 19, ki je prirejen za naleganje na smiselno enakem obrobku 19', 19 ohišja 1 vsakokrat sosednjega zaščitnega sklopa 100, pri tem pa je vsakokraten obrobek 19', 19 prekinjen v vsaj dveh med seboj nasprotnih območjih, velikost omenjenih prekinitev obrobka 19', 19' in sama višina H obrobka 19', 19 (Sl. 6) pa sta tolikšni, da je v območju prekinitve obrobka 19, 19, zagotovljen neoviran prehod skozi hladilne oz. prezračevalne reže 12', 12, 12', 13', 13, 13' v bočnih stenah 12, 13 ohišja 1 pretakajočega se zraka.Furthermore, each of the otherwise flat and smooth side walls 12, 13 of each housing 1 is equipped with an outwardly projecting edge 19', 19, which is adapted to rest on a substantially identical edge 19', 19 of the housing 1 of each adjacent protective assembly 100, whereby and each edge 19', 19 is interrupted in at least two areas opposite each other, and the size of the mentioned edge interruptions 19', 19' and the height H of the edge 19', 19 (Fig. 6) are such that in the area of the edge interruption 19, 19, guaranteed unobstructed passage through cold stores or ventilation slots 12', 12, 12', 13', 13, 13' in the side walls 12, 13 of the housing 1 of flowing air.

Nadalje je za prejem varovalke 3, 3' prirejeni pokrov 2 škatlasto zasnovan in obsega primemo oblikovano, za prileganje ohišju 1 prirejeno in navzven vidno ter z upravljalnim nastavkom 220 opremljeno pročelno steno 22, v notranjosti ohišja 1 razporejeno in za naleganje varovalke 3, 3' prirejeno hrbtno steno 23, kot tudi rešetkasto zasnovani bočni steni 24, 25, ki sta prirejeni za pozicioniranje vsakokratne varovalke 3, 3' v notranjosti pokrova 2, pri čemer pa je omenjeno vrtišče 21 pokrova 2, ki omogoča vihtenje slednjega relativno glede na ohišje 1, razporejeno izven območja omenjenih bočnih sten 24, 25, namreč v območje same pročelne stene 23.Furthermore, the cover 2 designed to receive the fuse 3, 3' is box-shaped and includes a shaped grip, adapted to fit the housing 1 and visible from the outside, and equipped with a control attachment 220, the front wall 22, arranged inside the housing 1 and for fitting the fuse 3, 3' adapted back wall 23, as well as lattice-designed side walls 24, 25, which are adapted for positioning each fuse 3, 3' inside the cover 2, and the pivot 21 of the cover 2 is mentioned, which allows the latter to be rotated relative to the housing 1 , arranged outside the area of the mentioned side walls 24, 25, namely in the area of the front wall 23 itself.

Vsaka izmed omenjenih bočnih sten 24, 25 pokrova 2 je formirana iz niza med seboj vzporedno razmaknjenih, prečno glede na vzdolžno os 30 varovalke 3, 3' potekajočih nosilnih trakov 24', 24, 24'; 25', 25, 25' vnaprej določene širine T (Sl. 6), pri čemer pa omenjena širina T vsakega izmed nosilnih trakov 24', 24, 24'; 25', 25, 25' ne presega medsebojne oddaljenosti L med hladilnimi oz. prezračevalnimi režami 12', 12, 12', 13', 13, 13' na bočnih stenah 12, 13 ohišja 1, in pri čemer so tudi nosilni trakovi 24', 24, 24' ene bočne stene 24 glede na nosilne trakove 25', 25, 25' preostale bočne stene 25 pokrova 2 v vzdolžni smeri ohišja 1 oz. v smeri vzdolžne geometrijske osi 30 varovalke 3 medsebojno zamaknjeni za vnaprej določeno razdaljo S, ki je usklajena s predhodno obravnavanim zamikom hladilnih oz. prezračevalnih rež 12', 12, 12', 13', 13, 13' na bočnih stranicah 12, 13 ohišja 1 in je torej tako izbrana, da se pri zaprtem, v notranjost ohišja 1 zavihtenem pokrovu 2 vsakokraten nosilni trak 24', 24, 24'; 25', 25, 25' na pokrovu 2 nahaja v območju med vsakokrat sosednjima hladilnima oz. prezračevalnima režama 12', 12, 12', 13', 13, 13' na bočnih stranicah 12, 13 ohišja 1, oziroma izven območja omenjenih rež 12', 12, 12', 13', 13, 13', tako da med trakovi 24', 24, 24'; 25', 25, 25' in režami 12', 12, 12', 13', 13, 13' ni medsebojnega prekrivanja.Each of the mentioned side walls 24, 25 of the cover 2 is formed from a set of supporting strips 24', 24, 24' running parallel to each other, transversely with respect to the longitudinal axis 30 of the fuse 3, 3'; 25', 25, 25' of a predetermined width T (Fig. 6), wherein said width T of each of the support strips 24', 24, 24'; 25', 25, 25' does not exceed the mutual distance L between the cooling or ventilation slits 12', 12, 12', 13', 13, 13' on the side walls 12, 13 of the housing 1, and wherein the support strips 24', 24, 24' of one side wall 24 are also in relation to the support strips 25' , 25, 25' of the remaining side walls 25 of the cover 2 in the longitudinal direction of the housing 1 or in the direction of the longitudinal geometric axis 30 of the fuse 3 mutually offset by a predetermined distance S, which is coordinated with the previously discussed offset of the cooling or. ventilation slits 12', 12, 12', 13', 13, 13' on the sides 12, 13 of the housing 1 and is therefore chosen in such a way that when the lid 2 is closed and folded inside the housing 1, each carrying strap 24', 24 , 24'; 25', 25, 25' on cover 2 is located in the area between each adjacent cooling or ventilation slots 12', 12, 12', 13', 13, 13' on the sides 12, 13 of the housing 1, or outside the area of said slots 12', 12, 12', 13', 13, 13', so that between strips 24', 24, 24'; 25', 25, 25' and slots 12', 12, 12', 13', 13, 13' do not overlap.

Prednost tako zasnovanega pokrova 2 je med drugim tudi ta, da pri nespremenjeni širini D ohišja 1, ki v praksi običajno znaša 21,7 mm, omogoča uporabo bodisi enojnih varovalk 3 ali pa tkzv. tandemskih varovalk 3', namreč dveh po obliki, velikosti in nazivni vrednosti enakih varovalk, ki sta v položaju medsebojnega naleganja med seboj mehansko nerazstavljivo in tudi električno povezani, npr.The advantage of the cover 2 designed in this way is, among other things, that with the unchanged width D of the housing 1, which in practice is usually 21.7 mm, it enables the use of either single fuses 3 or so-called tandem fuses 3', namely two fuses of the same shape, size and nominal value, which are mechanically inseparable and electrically connected to each other in the position of mutual abutment, e.g.

zvarjeni, in zato tudi dejansko funkcionirata kot dve paralelno vezani klasični varovalki. Če je bil zaščitni sklop 100 oz. tkzv ločilnik na osnovi klasične varovalke 3 tipa CH 10/14 T po katalogu ETI in standardu IEC 60947-l:2004(E) oz. IEC 60947-1:2020 v praksi doslej izvedljivi za zaščito tokokrogov z nazivnim tokom do 32 A proti preobremenitvi in kratkemu stiku, tovrstna zaščita tokokroga s tandemsko varovalko 3' omogoča zaščito tokokroga z nazivnim tokom do 63 A pri 1500 V enosmerne napetosti.welded, and therefore actually function as two classic fuses connected in parallel. If the protective assembly was 100 or tkzv disconnector based on classic fuse 3 type CH 10/14 T according to ETI catalog and standard IEC 60947-l:2004(E) or IEC 60947-1:2020 is so far feasible in practice for the protection of circuits with a rated current of up to 32 A against overload and short circuit, this type of circuit protection with a tandem fuse 3' enables the protection of a circuit with a rated current of up to 63 A at 1500 V DC voltage.

Pri eni od izvedb sklopa 100 po izumu je pokrov 2 vstavljiv v ohišje 1 vnaprej določene debeline D in prirejen za prejem ene same električne uporovne varovalke 3 s talilnim elementom, ki je s svojima okovoma 31, 32 vstavljiva v kontaktna naseda 17, 18 v ohišju 1 in preko slednjih električno povezljiva s priključnima sponkama 15, 16 na ohišju 1.In one of the embodiments of the assembly 100 according to the invention, the cover 2 can be inserted into the housing 1 of predetermined thickness D and adapted to receive a single electric resistance fuse 3 with a melting element, which can be inserted with its fittings 31, 32 into the contact sockets 17, 18 in the housing 1 and via the latter electrically connectable to connection terminals 15, 16 on housing 1.

Nadaljnja različica izuma predvideva, da je pokrov 2 vstavljiv v ohišje 1 vnaprej določene debeline D in prirejen za prejem dveh druge ob drugi razporejenih ter med seboj po nazivni moči, obliki in dimenzijah enakih električnih uporovnih varovalk 3, 3' s talilnim elementom, ki sta s svojima okovoma 31, 32 vstavljiva v kontaktna naseda 17, 18 v ohišju 1 in preko slednjih električno povezljiva s priključnima sponkama 15, 16 na ohišju 1.A further version of the invention envisages that the cover 2 can be inserted into the housing 1 of a predetermined thickness D and adapted to receive two electric resistance fuses 3, 3' with a fusing element, which are arranged next to each other and have the same nominal power, shape and dimensions with its fittings 31, 32, can be inserted into the contact sockets 17, 18 in the housing 1 and via the latter can be electrically connected to the connection terminals 15, 16 on the housing 1.

Pri nadaljnji različici izuma pa je pokrov 2 vstavljiv v ohišje 1 vnaprej določene debeline D in prirejen za prejem dveh druge ob drugi razporejenih, med seboj nerazstavljivo in tudi električno povezanih ter med seboj po nazivni moči, obliki in dimenzijah enakih električnih uporovnih varovalk 3, 3' s talilnim elementom, ki sta s svojima okovoma 31, 32 vstavljiva v kontaktna naseda 17, 18 v ohišju 1 in preko slednjih električno povezljiva s priključnima sponkama 15, 16 na ohišju 1. Pri tem sta vsakokratni varovalki 3, 3' medsebojno zvarjeni v območju njunih okovov 32, 33 in v položaju, ko se njuna okrova nahajata drug ob drugem in ko sta njuni vzdolžni geometrijski osi 30 med seboj vzporedni, skupna dolžina obeh varovalk 3, 3' v sestavu pa ustreza dolžini vsake izmed njiju.In a further version of the invention, the cover 2 can be inserted into the housing 1 of a predetermined thickness D and adapted to receive two side-by-side, non-detachable and electrically connected electric resistance fuses 3, 3 ' with a fusible element, which can be inserted into the contact sockets 17, 18 in the housing 1 with their fittings 31, 32 and via the latter can be electrically connected to the connection terminals 15, 16 on the housing 1. In this case, each fuse 3, 3' is welded to each other in in the area of their fittings 32, 33 and in the position when their fittings are located next to each other and when their longitudinal geometric axes 30 are parallel to each other, and the total length of the two fuses 3, 3' in the assembly corresponds to the length of each of them.

Kot je bilo omenjeno, sklop 100 navzlic nespremenjeni obliki, velikosti in še zlasti debeline D ohišja 1 omogoča vgradnjo zmogljivejših varovalk 3, 3', pri čemer pa je obenem tudi zagotovljeno sprotno in dovolj intenzivno odvajanje toplote iz notranjosti ohišja 1 v okolico. Odvajanje toplote omogoča razporeditev hladilnih oz. ventilacijskih rež 12', 12, 12'; 13', 13, 13 v bočnih stenah 12, 13 ohišja 1 v kombinaciji z rešetkasto izvedbo bočnih sten 24, 25 pokrova 2, ki sestojita iz nosilnih trakov 24', 24, 24'; 25', 25, 25', ki so razporejeni izven območja hladilnih oz. ventilacijskih rež 12', 12, 12'; 13', 13, 13' oz se z njimi ne prekrivajo. Zamik S med režami 12', 12, 12'; 13', 13, 13' na eni in drugi steni 12, 13 ohišja 1 zagotavlja, da se tudi v sestavu med seboj tesno skupaj nameščenih ohišij 1 sklopa tudi reže 12', 12, 12'; 13', 13, 13' vsakokrat sosednjih ohišij 1 med seboj ne prekrivajo, povrhu vsega pa je zahvaljujoč omenjenim obrobkom 19', 19 tudi v takem primeru med sosednjima ohišjema na voljo vrzel, ki ustreza vsaj dvakratniku višine H obrobka 19', 19. Omenjena vrzel načeloma povsem zadostuje, da zrak iz posameznega ohišja 1 po potrebi lahko nemoteno odteka skozi med seboj zamaknjene reže 12', 12, 12'; 13', 13, 13' in potem ob bočni steni 12, 13 vzdolž omenjene vrzeli med ohišjema 1 in mimo prekinjenih obrobkov 19', 19. Prisotnost in razporeditev omenjenih nosilnih trakov 24', 24, 24'; 25', 25, 25' pokrova 2 pa poleg omogočanja neoviranega prehoda segretega zraka iz območja varovalke 3, 3' v smeri proti režam 12', 12, 12'; 13', 13, 13' v stenah 12, 13 ohišja 1 omogoča tudi dodatno zaščito območij med režami 12', 12, 12'; 13', 13, 13' proti prekomernemu segrevanju. Kot je bilo omenjeno, so prav območja med režami 12', 12, 12'; 13', 13, 13' najbolj izpostavljena toplotnim preobremenitvam, ki v kritičnih primerih lahko privedejo do spremembe strukture ter mehanskih in tudi izolativnih lastnosti ohišja 1. Zahvaljujoč konceptu, ki ga predlaga izum, so omenjena območja med režami 12', 12, 12'; 13', 13, 13' z notranje strani vsaj v pretežni meri zakrita s trakovi 24', 24, 24'; 25', 25, 25' bočnih sten 24, 25 pokrova 2, povrhu tega pa je tudi med vsakokratnim trakom 24', 24, 24'; 25', 25, 25' in bočno steno 12, 13 ohišja 1 na voljo zračna reža, ki kot taka še dodatno ublaži učinke segrevanja varovalke 3, 3' na bočni steni 12, 13 ohišja 1.As mentioned, the set 100, due to the unchanged shape, size and especially the thickness D of the housing 1, enables the installation of more powerful fuses 3, 3', while at the same time it also ensures a continuous and sufficiently intensive heat dissipation from the inside of the housing 1 to the surroundings. Heat dissipation enables the arrangement of cooling or ventilation slots 12', 12, 12'; 13', 13, 13 in the side walls 12, 13 of the housing 1 in combination with the lattice design of the side walls 24, 25 of the cover 2, which consist of the supporting strips 24', 24, 24'; 25', 25, 25', which are arranged outside the cooling area or ventilation slots 12', 12, 12'; 13', 13, 13' or do not overlap with them. Offset S between slots 12', 12, 12'; 13', 13, 13' on one and the other wall 12, 13 of the housing 1 ensures that the slots 12', 12, 12' are assembled even in the composition of the housings 1 placed closely together; 13', 13, 13' always do not overlap the adjacent housings 1 with each other, and on top of all that, thanks to the mentioned edges 19', 19, even in such a case, a gap is available between the adjacent housings, corresponding to at least twice the height H of the edge 19', 19. In principle, the mentioned gap is completely sufficient so that the air from the individual housing 1 can, if necessary, flow smoothly through the offset slots 12', 12, 12'; 13', 13, 13' and then along the side wall 12, 13 along the said gap between the housings 1 and past the interrupted edges 19', 19. The presence and arrangement of the said support strips 24', 24, 24'; 25', 25, 25' of the cover 2, in addition to enabling the unhindered passage of heated air from the area of the fuse 3, 3' in the direction of the slots 12', 12, 12'; 13', 13, 13' in the walls 12, 13 of the housing 1 also enables additional protection of the areas between the slots 12', 12, 12'; 13', 13, 13' against overheating. As mentioned, the areas between the slots are exactly 12', 12, 12'; 13', 13, 13' are the most exposed to thermal overloads, which in critical cases can lead to a change in the structure and mechanical and also insulating properties of the housing 1. Thanks to the concept proposed by the invention, the mentioned areas between the slots 12', 12, 12' ; 13', 13, 13' are at least largely covered from the inside by strips 24', 24, 24'; 25', 25, 25' of the side walls 24, 25 of the cover 2, and on top of that there is also between each strip 24', 24, 24'; 25', 25, 25' and the side wall 12, 13 of the housing 1, an air gap is available, which as such further mitigates the heating effects of the fuse 3, 3' on the side wall 12, 13 of the housing 1.

Claims (5)

PATENTNI ZAHTEVKIPATENT CLAIMS 1. Zaščitni sklop (100) na osnovi električne uporovne varovalke (3, 3') s talilnim elementom, obsegajoč1. Protective assembly (100) based on an electric resistance fuse (3, 3') with a fusing element, comprising - škatlasto zasnovano ohišje (1), ki v osnovi sestoji iz električno neprevodnega materiala in je na svoji pročelni strani (11) odprto in prirejeno za prejem pokrova (2), v katerega je vstavljiva omenjena električna uporovna varovalka (3, 3'), in ki je nadalje na svoji hrbtni steni (14) opremljeno z zaskočnim nasedom (140) za pritrditev ohišja (1) na primemo priključno letev in ki na vsaki izmed svojih dominantnih, v splošnem ravnih in gladkih bočnih sten (12, 13) obsega niz med seboj enakomerno razmaknjenih hladilnih rež (12', 12, 12'; 13', 13, 13'), razen tega pa je ohišje (1) v območju izven omenjene odprte pročelne strani (11) opremljeno z električno prevodnima priključnima sponkama (15, 16), prirejenima za vgradnjo zaščitnega sklopa (100) v vsakokraten električni tokokrog, poleg tega pa sta v notranjosti omenjenega ohišja (1) na primernih lokacijah predvidena električno prevodna kontaktna naseda (17, 18), ki sta prirejena za prejem in zaskočenje omenjene varovalke (3, 3') in ki sta vsak zase električno povezana s po eno izmed omenjenih priključnih sponk (15, 16) na ohišju (1),- a box-shaped housing (1), which basically consists of an electrically non-conductive material and is open on its front side (11) and adapted to receive a cover (2), into which the aforementioned electric resistance fuse (3, 3') can be inserted, and which is further equipped on its back wall (14) with a snap-on catch (140) for attaching the housing (1) to a fixed terminal strip and which on each of its dominant, generally flat and smooth side walls (12, 13) comprises a series of evenly spaced cooling slots (12', 12, 12'; 13', 13, 13'), and apart from that, the housing (1) in the area outside the mentioned open front side (11) is equipped with electrically conductive connection terminals (15) , 16), adapted for the installation of the protective assembly (100) in each electrical circuit, and in addition, electrically conductive contact pads (17, 18) are provided inside the mentioned housing (1) at suitable locations, which are adapted for receiving and latching the mentioned fuses (3, 3') and which are each electrically connected to one of the aforementioned connection terminals (15, 16) on the housing (1), - električno uporovno varovalko (3, 3') s cilindričnim cevastim okrovom (31) iz električno izolativnega materiala, ki je na obeh koncih zaprt z električno prevodnima okovoma (32, 33), med katerima je v notranjosti omenjenega okrova (31) vgrajen z vsakim izmed njiju električno povezan električni uporovni talilni element,- electric resistance fuse (3, 3') with a cylindrical tubular casing (31) made of electrically insulating material, which is closed at both ends with electrically conductive fittings (32, 33), between which inside said casing (31) is installed with an electric resistance melting element electrically connected to each of them, - pokrov (2), ki sestoji iz električno neprevodnega materiala in je dovolj tog, da je je v vrtišču (21) na ohišju (1) zasukljivo vgrajen v območju odprte pročelne strani (11) ohišja (1) in prirejen za prejem vsakokratne električne varovalke (3, 3') na tak način, daje po odvihtenju pokrova (2) v smeri ven iz ohišja (1) omogočen dostop do notranjosti ohišja (1) in je v tem položaju pokrova (2) vsakokratna varovalka (3, 3') izključena iz vsakokratnega električnega tokokroga ter bodisi v pokrov (2) vstavljiva ali iz njega odstranljiva, medtem ko se po zavihtenju pokrova (2) v smeri proti ohišju (1) pokrov (2) popolnoma prilega ohišju (1), obenem pa je v njem vstavljena varovalka (3, 3') zahvaljujoč zaskočenju v omenjena kontaktna naseda (17, 18) v notranjosti ohišja (1) preko priključnih sponk (15, 16) na ohišju (1) električno povezana v vsakokraten električni tokokrog, pri čemer omenjena električna uporovna varovalka (3, 3') predstavlja varovalko s cilindričnim cevastim okrovom (31) iz električno izolativnega materiala, ki je na obeh koncih zaprt z električno prevodnima okovoma (31, 32), v območju katerih je omenjena varovalka (3, 3') zaskočljiva v omenjena električno prevodna kontaktna naseda (17, 18) v notranjosti ohišja (1) in med katerima je v notranjosti omenjenega okrova (31) vgrajen z vsakim izmed njiju električno povezan smiselno v vzdolžni geometrijski osi (30) potekajoč talilni element varovalke (3, 3'), in pri čemer so omenjene reže (12', 12, 12'; 13', 13, 13') v bočnih stenah (12, 13) ohišja (1) razporejene preko osrednjega območja vsakokratne stene (12, 13) na zadostni oddaljenosti od električno prevodnih okovov (31, 32) varovalke (3) in kontaktnih nasedov (17, 18) v ohišju (1), označen s tem,- the cover (2), which consists of an electrically non-conductive material and is rigid enough to be rotatably installed in the pivot (21) on the housing (1) in the area of the open front side (11) of the housing (1) and adapted to receive any electrical fuses (3, 3') in such a way that, after the cover (2) is lifted out of the housing (1), access to the inside of the housing (1) is enabled, and in this position of the cover (2) each fuse (3, 3') ) disconnected from the current electrical circuit and can either be inserted into the cover (2) or removed from it, while after turning the cover (2) towards the housing (1), the cover (2) fits perfectly into the housing (1), and at the same time it is in the fuse (3, 3') inserted in it thanks to snapping into the mentioned contact sockets (17, 18) inside the housing (1) via the connection terminals (15, 16) on the housing (1) is electrically connected to each electrical circuit, whereby the said electrical the resistance fuse (3, 3') is a fuse with a cylindrical tubular casing (31) made of electrically insulating material, which is closed at both ends by electrically conductive fittings (31, 32), in the area of which said fuse (3, 3') is located which can be snapped into said electrically conductive contact block (17, 18) inside the housing (1) and between which a fuse fusing element (3) running along the longitudinal geometric axis (30) and electrically connected to each of them is installed in the inside of said cover (31) , 3'), and where slots are mentioned (12', 12, 12'; 13', 13, 13') in the side walls (12, 13) of the housing (1) arranged over the central area of each wall (12, 13) at a sufficient distance from the electrically conductive fittings (31, 32) of the fuse (3) and contact pads (17, 18) in housing (1), marked with - da je vsakokraten niz med seboj enakomerno razmaknjenih hladilnih rež (12', 12, 12', 13', 13, 13') vnaprej določene in enakomerne širine (W) vsakokratne reže na omenjenih bočnih stenah (12, 13) med pročelno stranjo (11) in hrbtno steno (14) ohišja (1) tako zasnovan, da širina (W) vsakokratne reže (12', 12, 12', 13', 13, 13') ne presega medsebojne oddaljenosti (L) med vsakokrat sosednjima režama (12', 12, 12', 13', 13, 13'),- that each set of evenly spaced cooling slots (12', 12, 12', 13', 13, 13') is of predetermined and uniform width (W) of each slot on the mentioned side walls (12, 13) between the front (11) and the back wall (14) of the housing (1) designed in such a way that the width (W) of each gap (12', 12, 12', 13', 13, 13') does not exceed the mutual distance (L) between each adjacent slots (12', 12, 12', 13', 13, 13'), - da sta oba vsakokrat razpoložljiva niza rež (12', 12, 12', 13', 13, 13') na bočnih stenah (12, 13), namreč rež (12', 12, 12') na eni bočni steni (12) in rež (13', 13, 13') na preostali bočni steni (13), v vzdolžni smeri ohišja (1), smiselno v vzdolžni smeri osrednje geometrijske osi (30) varovalke (3, 3'), med seboj zamaknjena za vnaprej določeno razdaljo (S), ki je vsakokrat tako izbrana, da se pri vnaprej določeni širini (W) rež (12', 12, 12', 13', 13, 13') in vsakokrat izbrani razdalji (L) med vsakokrat sosednjima režama (12', 12, 12', 13', 13, 13') reže (12', 12, 12') na eni bočni steni (12) in reže (13', 13, 13') na preostali bočni steni (13) med seboj ne prekrivajo, tako da se tudi po namestitvi dveh ohišij (1) drugo ob drugega na taisto priključno letev reže (12', 12, 12') na bočni steni (12) prvega ohišja (1) in reže (13', 13, 13') na proti njej obrnjeni bočni steni (13) drugega ohišja med seboj ne prekrivajo,- that each set of slots (12', 12, 12', 13', 13, 13') are available on the side walls (12, 13), namely slots (12', 12, 12') on one side wall ( 12) and slots (13', 13, 13') on the remaining side wall (13), in the longitudinal direction of the housing (1), meaningfully in the longitudinal direction of the central geometric axis (30) of the fuse (3, 3'), offset from each other for a predetermined distance (S), which is each time selected so that with a predetermined width (W) of the slots (12', 12, 12', 13', 13, 13') and each time selected distance (L) between adjacent slots (12', 12, 12', 13', 13, 13') slots (12', 12, 12') on one side wall (12) and slots (13', 13, 13') on the remaining side wall the walls (13) do not overlap each other, so that even after installing two housings (1) side by side on the same connection rail, the slots (12', 12, 12') on the side wall (12) of the first housing (1) and the slots (13', 13, 13') on the facing side wall (13) of the second housing do not overlap each other, - da je vsaka izmed sicer ravnih in gladkih bočnih sten (12, 13) vsakokratnega ohišja (1) opremljena z navzven štrlečim obrobkom (19', 19), ki je prirejen za naleganje na smiselno enakem obrobku (19', 19) ohišja (1) vsakokrat sosednjega zaščitnega sklopa (100), pri tem pa je vsakokraten obrobek (19', 19) prekinjen v vsaj dveh med seboj nasprotnih območjih, velikost omenjenih prekinitev obrobka (19', 19') in sama višina (H) obrobka (19', 19) pa sta tolikšni, daje v območju prekinitve obrobka (19, 19), zagotovljen neoviran prehod skozi hladilne oz. prezračevalne reže (12', 12, 12', 13', 13, 13') v bočnih stenah (12, 13) ohišja (1) pretakajočega se zraka;- that each of the otherwise flat and smooth side walls (12, 13) of each housing (1) is equipped with an outwardly projecting edge (19', 19), which is adapted to rest on a meaningfully identical edge (19', 19) of the housing ( 1) in each case of an adjacent protective assembly (100), and in each case the border (19', 19) is interrupted in at least two areas opposite each other, the size of said interruptions of the border (19', 19') and the height (H) of the border itself ( 19', 19) are such that, in the area of the edge break (19, 19), an unobstructed passage through the cooling or ventilation slits (12', 12, 12', 13', 13, 13') in the side walls (12, 13) of the casing (1) of flowing air; in s tem, da je za prejem varovalke (3, 3') prirejeni pokrov (2) škatlasto zasnovan in obsega primemo oblikovano, za prileganje ohišju (1) prirejeno in navzven vidno ter z upravljalnim nastavkom (220) opremljeno pročelno steno (22), v notranjosti ohišja (1) razporejeno in za naleganje varovalke (3, 3') prirejeno hrbtno steno (23), kot tudi rešetkasto zasnovani bočni steni (24, 25), ki sta prirejeni za pozicioniranje vsakokratne varovalke (3, 3') v notranjosti pokrova (2), pri čemer pa je omenjeno vrtišče (21) pokrova (2), ki omogoča vihtenje slednjega relativno glede na ohišje (1), razporejeno izven območja omenjenih bočnih sten (24, 25), in pri čemer je vsaka izmed omenjenih bočnih sten (24, 25) formirana iz niza med seboj vzporedno razmaknjenih, prečno glede na vzdolžno os (30) varovalke (3, 3') potekajočih nosilnih trakov (24', 24, 24'; 25', 25, 25') vnaprej določene širine (T), pri čemer omenjena širina (T) vsakega izmed nosilnih trakov (24', 24, 24'; 25', 25, 25') ne presega medsebojne oddaljenosti (L) med hladilnimi režami (12', 12, 12', 13', 13, 13') na bočnih stenah (12, 13) ohišja (1), in pri čemer so tudi nosilni trakovi (24', 24, 24') ene bočne stene (24) glede na nosilne trakove (25', 25, 25') preostale bočne stene (25) pokrova (2) v vzdolžni smeri ohišja (1) oz. v smeri vzdolžne geometrijske osi (30) varovalke (3) medsebojno zamaknjeni za vnaprej določeno razdaljo (S), ki je usklajena z zamikom hladilnih rež (12', 12, 12', 13', 13, 13') na bočnih stranicah (12, 13) ohišja (1) in je tako izbrana, da se pri zaprtem, v notranjost ohišja (1) zavihtenem pokrovu (2) vsakokraten nosilni trak (24', 24, 24'; 25', 25, 25') na pokrovu (2) nahaja v območju med vsakokrat sosednjima hladilnima režama (12', 12, 12', 13', 13, 13') na bočnih stranicah (12, 13) ohišja (1) oziroma izven območja omenjenih rež (12', 12, 12', 13', 13, 13'), tako da med trakovi (24', 24, 24'; 25', 25, 25') in režami (12', 12, 12', 13', 13, 13') ni medsebojnega prekrivanja.and by the fact that the cover (2) designed to receive the fuse (3, 3') is box-shaped and includes a front wall (22) designed to fit the housing (1) and visible from the outside and equipped with a control attachment (220) , a back wall (23) arranged inside the housing (1) and adapted for fitting the fuse (3, 3'), as well as side walls (24, 25) designed in a grid pattern, which are adapted for positioning each fuse (3, 3') inside the cover (2), wherein said pivot (21) of the cover (2), which enables the latter to be pivoted relative to the housing (1), is arranged outside the area of said side walls (24, 25), and wherein each of the mentioned side walls (24, 25) formed from a series of supporting strips (24', 24, 24'; 25', 25, 25) running parallel to each other, transverse to the longitudinal axis (30) of the fuse (3, 3') ') of predetermined width (T), whereby said width (T) of each of the supporting strips (24', 24, 24'; 25', 25, 25') does not exceed the mutual distance (L) between the cooling slots (12' , 12, 12', 13', 13, 13') on the side walls (12, 13) of the housing (1), and wherein the supporting strips (24', 24, 24') of one side wall (24) are to the supporting strips (25', 25, 25') of the remaining side walls (25) of the cover (2) in the longitudinal direction of the housing (1) or in the direction of the longitudinal geometric axis (30) of the fuse (3) offset from each other by a predetermined distance (S), which is coordinated with the offset of the cooling slots (12', 12, 12', 13', 13, 13') on the sides ( 12, 13) of the housing (1) and is selected so that when the cover (2) is closed and folded inside the housing (1), each carrying strap (24', 24, 24'; 25', 25, 25') on cover (2) is located in the area between each adjacent cooling slots (12', 12, 12', 13', 13, 13') on the sides (12, 13) of the housing (1) or outside the area of said slots (12', 12, 12', 13', 13, 13'), so that between the strips (24', 24, 24'; 25', 25, 25') and slots (12', 12, 12', 13', 13 , 13') there is no mutual overlap. 2. Zaščitni sklop po zahtevku 1, označen s tem, daje pokrov (2) vstavljiv v ohišje (1) vnaprej določene debeline (D) in prirejen za prejem ene same električne uporovne varovalke (3) s talilnim elementom, ki je s svojima okovoma (31, 32) vstavljiva v kontaktna naseda (17, 18) v ohišju (1) in preko slednjih električno povezljiva s priključnima sponkama (15, 16) na ohišju (1).2. The protective assembly according to claim 1, characterized by the fact that the cover (2) can be inserted into the housing (1) of a predetermined thickness (D) and adapted to receive a single electric resistance fuse (3) with a fuse element, which with its fittings (31, 32) can be inserted into the contact sockets (17, 18) in the housing (1) and via the latter can be electrically connected to the connection terminals (15, 16) on the housing (1). 3. Zaščitni sklop po zahtevku 1, označen s tem, daje pokrov (2) vstavljiv v ohišje (1) vnaprej določene debeline (D) in prirejen za prejem dveh druge ob drugi razporejenih ter med seboj po nazivni moči, obliki in dimenzijah enakih električnih uporovnih varovalk (3, 3') s talilnim elementom, ki sta s svojima okovoma (31, 32) vstavljiva v kontaktna naseda (17, 18) v ohišju (1) in preko slednjih električno povezljiva s priključnima sponkama (15, 16) na ohišju (1).3. The protective assembly according to claim 1, characterized by the fact that the cover (2) can be inserted into the housing (1) of a predetermined thickness (D) and adapted to receive two adjacently arranged and identical to each other in nominal power, shape and dimensions resistance fuses (3, 3') with a fusing element, which can be inserted with their fittings (31, 32) into the contact sockets (17, 18) in the housing (1) and via the latter can be electrically connected to the connection terminals (15, 16) on housing (1). 4. Zaščitni sklop po zahtevku 3, označen s tem, da je pokrov (2) vstavljiv v ohišje (1) vnaprej določene debeline (D) in prirejen za prejem dveh druge ob drugi razporejenih, med seboj nerazstavljivo in tudi električno povezanih ter med seboj po nazivni moči, obliki in dimenzijah enakih električnih uporovnih varovalk (3, 3') s talilnim elementom, ki sta s svojima okovoma (31, 32) vstavljiva v kontaktna naseda (17, 18) v ohišju (1) in preko slednjih električno povezljiva s priključnima sponkama (15, 16) na ohišju (1).4. The protective assembly according to claim 3, characterized by the fact that the cover (2) can be inserted into the housing (1) of a predetermined thickness (D) and adapted to receive two arranged next to each other, mutually inseparable and also electrically connected and to each other according to the rated power, shape and dimensions of the same electric resistance fuses (3, 3') with a melting element, which can be inserted with their fittings (31, 32) into the contact sockets (17, 18) in the housing (1) and electrically connected via the latter with connection terminals (15, 16) on the housing (1). 5. Zaščitni sklop po zahtevku 4, označen s tem, da sta vsakokratni varovalki (3, 3') medsebojno zvarjeni v območju njunih okovov (32, 33) in v položaju, ko se njuna okrova nahajata drug ob drugem in ko sta njuni vzdolžni geometrijski osi (30) med seboj vzporedni, skupna dolžina obeh varovalk (3, 3') v sestavu pa ustreza dolžini vsake izmed njiju.5. Protective assembly according to claim 4, characterized by the fact that each fuse (3, 3') is welded to each other in the region of their fittings (32, 33) and in the position when their fittings are located next to each other and when their longitudinal the geometric axes (30) are parallel to each other, and the total length of the two fuses (3, 3') in the composition corresponds to the length of each of them.
SI202200071A 2022-05-06 2022-05-06 Protective assembly based on electrical resistance fuse with melting element SI26360A (en)

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Application Number Priority Date Filing Date Title
SI202200071A SI26360A (en) 2022-05-06 2022-05-06 Protective assembly based on electrical resistance fuse with melting element
SI202200074A SI26361A (en) 2022-05-06 2022-05-10 Protective appliance on the basis of a fuse with a melting member, prevented against insertion of false fuse
PCT/SI2022/000005 WO2023214940A1 (en) 2022-05-06 2022-08-08 Protective appliance on the basis of a fuse with a melting member
PCT/SI2022/000007 WO2023214941A1 (en) 2022-05-06 2022-12-12 Protective appliance on the basis of a fuse with a melting member, prevented against insertion of a false fuse

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US2259142A (en) * 1941-06-05 1941-10-14 Gen Electric Fuse device and clip therefor
DE102010028685B4 (en) * 2010-05-06 2015-07-23 Wöhner GmbH & Co. KG Elektrotechnische Systeme Device for receiving a cylindrical fuse and switching device
CN113745074A (en) * 2021-09-30 2021-12-03 吴茂义 Quick-recovery surge and short-circuit protector

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