DK152157B - GROUP SWITCH - Google Patents

Description

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DK 152157 BDK 152157 B

Opfindelsen angår en gruppeafbryder med et hus med klemmer for indkobling af gruppeafbryderen i en ledning og med en skuffe til en sikring, hvilken skuffe er indskydelig i huset til tilvejebringelse af kontakt mellem sikringens ene kontaktorgan og husets ene klemme, 5 hvilken gruppeafbryder endvidere er forsynet med en ved hjælp af en fjeder ekscentrisk kraftpåvirket vippeafbryder med et manøvreorgan, hvilken vippeafbryder er indrettet til ved hjælp af en knæledsvægtstang at slutte og afbryde en forbindelse mellem husets anden klemme og sikringens andet kontaktorgan, samt hvor skuffen er 10 låst i sin indskudte stilling og først kan udtages efter bevægelse af vippeafbryderen til afbrydelse af forbindelsen mellem husets anden klemme og sikringens andet kontaktorgan.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a group switch with a housing with terminals for connecting the group switch in a line and with a drawer for a fuse, which drawer is slid into the housing to provide contact between one contact member of the fuse and the one terminal of the housing, which group switch is further provided with a spring eccentric actuated rocker switch with a maneuvering means, which rocker switch is adapted to terminate and sever a connection between the second clamp of the housing and the second contact member of the housing, and by means of a knee joint bar, and wherein the drawer is locked in its inserted position and first may be removed after movement of the rocker switch to disconnect the connection between the second terminal of the housing and the second contact member of the fuse.

Der kendes en afbryder af denne art fra beskrivelsen til USA patent nr. 3339Π8. Ved denne kendte konstruktion er skuffen låselig 15 i sin indskudte stilling ved hjælp af et håndtag, som er anbragt på skuffens forside, og som står i forbindelse med låseplader på indersiden af skuffens forside, hvilke låseplader ved hjælp af vippeafbryderen låses i en stilling, hvori de forhindrer skuffens udtrækning, når vippeafbryderens manøvreorgan står i sluttestilling. Derved sik-20 res det, at sikringsskuffen først kan udtages, efter at vippeafbryderen er blevet bevæget til brydestillingen. Til denne kendte konstruktion kræves der imidlertid et separat håndtag til skuffen og særlige låseplader ved indersiden af skuffens forside.A switch of this kind is known from the disclosure of U.S. Patent No. 3339Π8. In this known construction, the drawer is lockable in its inserted position by means of a handle located on the front of the drawer which communicates with locking plates on the inside of the drawer's front, which locking plates are locked in a position in which the rocker switch they prevent the drawer pull-out when the rocker switch's actuator is in final position. In this way, it is ensured that the fuse box can only be removed after the rocker switch has been moved to the breaking position. However, for this known construction, a separate handle for the drawer and special locking plates are required at the inside of the front of the drawer.

Gruppeafbryderen ifølge den foreliggende opfindelse er kende-25 tegnet ved, at skuffen er vippelig i sin i huset indskudte stilling for ind- og udkobling af kontakten mellem sikringens ene kontaktorgan og husets ene klemme, og at vippeafbryderen er forsynet med en anlægsflade, der i vippeafbryderens sluttestilling er indrettet til låsning af skuffen i dennes indskudte stilling, og at forbindelsen mel-30 lem husets anden klemme og sikringens andet kontaktorgan udgøres af en kontaktbro, der er vippeligt og forskydeligt lejret i huset, idet fjederen er forbundet med denne kontaktbro mellem dennes ender.The group switch according to the present invention is characterized in that the drawer is tiltable in its position inserted in the housing for switching on and off the contact between one contact member of the fuse and one terminal of the housing, and that the rocker switch is provided with a contact surface which in the flip switch the final position is arranged for locking the drawer in its inserted position, and that the connection between the other clamp of the housing and the other contact means of the fuse is constituted by a contact bridge which is tiltably and slidably mounted in the housing, the spring being connected to this contact bridge between its ends. .

Herved opnås der en væsentlig simplificering af gruppeafbryderen, idet vippeafbryderen kommer til at tjene et dobbelt formål, idet den på 35 den ene side tjener til betjening af gruppeafbryderen og på den anden side tjener som låseorgan for skuffen i dennes indskudte stilling, og desuden vil kontaktbroen takket være dennes særlige lejring og 2Hereby, a substantial simplification of the group switch is achieved, the rocker switch serving a dual purpose, serving on the one hand to operate the group switch and on the other hand serving as locking means for the drawer in its inserted position, and in addition, the contact bridge thanks to its special enclosure and 2

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fjederbelastning udøve et veldefineret kontakttryk mod sikringens anden endekontakt, hvilket kontakttryk endvidere ved udløsning af skuffen fra dennes låsede stilling vil påvirke skuffen til udskydning i forhold til huset, således at en afbrændt sikring let kan udskiftes.spring load exerts a well-defined contact pressure against the other end contact of the fuse, which contact pressure, moreover, when releasing the drawer from its locked position, will affect the drawer for extension relative to the housing, so that a burnt fuse can be easily replaced.

5 Derved kommer fjederen til at tjene flere formål, idet den for det før ste tjener som kontakttrykgiver mellem kontaktbroen og sikringens andet kontaktorgan, samt mellem kontaktbroen og husets anden klemme, og endvidere som middel til at holde vippeafbryderen sikkert i dennes siuttestilling og i dens brydestilling.5 In doing so, the spring serves several purposes, first serving as a contact pressure sensor between the contact bridge and the second contact member of the fuse, as well as between the contact bridge and the other clamp of the housing, and further as a means of securely holding the rocker switch in its seated position and in its breaking position. .

10 Til tilvejebringelse af kontakten mellem sikringens ene kontaktor gan og husets ene klemme er skuffen ifølge en foretrukket udførelsesform for opfindelsen forsynet med et ledende palfremspring eller et palhul til indgreb med et palhul, henholdsvis et palfremspring i et i huset fastholdt kontaktstykke, der er forbundet med husets ene klemme, samt 15 at vippeafbryderen har en affasning, der i vippeafbryderens brydestilling befinder sig i afstand fra skuffen og derved tillader dennes vip-ning. Denne udførelsesform er fordelagtig derved, at palfremspringet og palhullet kan holde skuffen i dennes indskudte stilling efter bevægelse af vippeafbryderen til dennes brydestilling, således at en betje-20 ningsperson selv er herre over udløsning af skuffen og derved udløsning af fjederens kraftpåvirkning på denne ved udskiftning af en sikring.10 In order to provide the contact between one contact member of the fuse and one clamp of the housing, the drawer according to a preferred embodiment of the invention is provided with a conductive pawl projection or a pawl hole for engagement with a pawl hole or a pawl projection in a contact piece held in the housing which is connected to the housing. the one clamp of the housing, and also that the rocker switch has a bevel which in the breaking position of the rocker switch is at a distance from the drawer, thereby permitting its tilting. This embodiment is advantageous in that the pawl projection and pawl hole can hold the drawer in its inserted position after movement of the rocker switch to its breaking position, so that an operator himself is in control of the release of the drawer and thereby releasing the spring force on it by replacing it. a fuse.

Ifølge endnu en udførelsesform for opfindelsen er knæleds vægtstangen svingeligt forbundet med vippeafbryderen og er forskydeligt 25 anbragt i huset for samvirkning med kontaktbroen. Herved opnås der en meget simpel og alligevel effektiv afbrydelse af forbindelsen mellem kontaktbroen og husets anden klemme ved bevægelse af vippeafbryderen til brydestillingen, hvorunder fjederen tilvejebringer en hurtig afbrydelse af forbindelsen.According to yet another embodiment of the invention, the knee joint lever is pivotally connected to the rocker switch and is slidably disposed in the housing for interaction with the contact bridge. This results in a very simple yet effective disconnection of the connection between the contact bridge and the other terminal of the housing by moving the rocker switch to the breaking position, during which the spring provides a quick disconnection of the connection.

30 Opfindelsen skal herefter forklares nærmere under henvisning til tegningen, som viser et lodret snit gennem en udføreisesform for gruppeafbryderen ifølge opfindelsen.The invention will then be explained in more detail with reference to the drawing, which shows a vertical section through an embodiment of the group switch according to the invention.

På tegningen betegner 1 gruppeafbryderens hus, og i dette er der anbragt to klemmer 2 og 3 til henholdsvis den strømførende leder 35 og den leder, som skal forbinde gruppeafbryderen med den pågældende gruppe. Hver klemme består af en skrue, henholdsvis 4 og 5, og en ringformet bøjle, henholdsvis 6 og 7, i hvis ene side den pågældende 3In the drawing, 1 denotes the group of the circuit breaker, and in this are provided two terminals 2 and 3 for the live conductor 35 and the conductor respectively, which are to connect the group switch to the group concerned. Each clamp consists of a screw, 4 and 5, respectively, and an annular bracket, 6 and 7, respectively, on one side of which the respective 3

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skrue er indskruet. Hver klemme samvirker med et kontaktstykke, henholdsvis 8 og 9. Kontaktstykket 8 udgøres af en U-formet bøjle, hvis ene gren bærer en kontakt 10, og hvis anden gren 11 indgriber i den tilhørende klemmes bøjle, således at der ved tilspænding af 5 skruen 4 opnås god kontakt mellem den strømførende leder og kontakt stykket 8. Kontaktstykket 9 har L-form, og dets ene gren 15 indgriber i den tilhørende klemmes bøjle 7, og den anden gren 16 forløber langs oversiden af en sideudsparing 17 i huset. Ved enden af grenen 16 er der i denne tilvejebragt et palhjul 18, hvori der også indgriber enden 10 af en fjeder 19.screw is screwed in. Each clamp cooperates with a contact piece 8 and 9, respectively. The contact piece 8 is constituted by a U-shaped bracket, one branch of which carries a contact 10 and the other branch 11 engaging in the associated clamp bracket, so that by tightening the screw 5 4, good contact is achieved between the live conductor and the contact piece 8. The contact piece 9 is L-shaped and its one branch 15 engages in the clamp 7 of the associated clamp and the other branch 16 extends along the upper side of a side recess 17 in the housing. At the end of the branch 16 there is provided a pawl wheel 18 in which also the end 10 of a spring 19 engages.

I sideudsparingen 17 er der forskydeligt lejret en skuffe 20 til optagelse af en sikring 23. Skuffen har ikke nogen sidevægge, således at sikringen 23 let kan gribes oppefra i skuffens udtrukne stilling. Undersiden 24 af skuffens bund 25 forløber i den på tegningen 15 viste stilling lidt skråt opad og fremefter i forhold til oversiden 26 af et par sideafsatser i sideudsparingen 17, således at der mellem undersiden 24 af skuffen og oversiderne 26 af sideafsatserne findes kileformede mellemrum 27.In the side recess 17, a drawer 20 is slidably mounted for receiving a fuse 23. The drawer has no side walls, so that the fuse 23 can be easily gripped from above in the extended position of the drawer. The underside 24 of the bottom 25 of the drawer extends slightly upwardly in the position shown in the drawing 15 and forwardly relative to the top side 26 of a pair of side ledges in the side recess 17, so that wedge-shaped spaces 27 are wedged between the underside 24 of the drawer and the upper sides 26 of the side ledges.

I skuffen er der fastgjort et kontaktorgan 28 af plademateriale, 20 der ved sin opadvendende ende er forsynet med et palfremspring 29 til indgreb med palhullet 18 i kontaktstykket 9. Kontaktorganet 28's anden ende er gaffelformet og tjener som anlæg for sikringen 23*s ene endekontaktorgan 30, således at en markeringsknap, som markerer, hvorvidt sikringen er intakt, kan iagttages mellem gaflens ben. I 25 den pågældende endevæg af skuffen er der indsat en gennemsigtig hætte 31 til optagelse af markeringsknappen, såfremt sikringen skulle brænde over.In the drawer is mounted a contact material 28 of sheet material 20, which at its upward end is provided with a pawl projection 29 for engagement with the pawl hole 18 in the contact piece 9. The other end of the contact member 28 is fork-shaped and serves as an installation for the one end contact member 30 of the fuse 23 , so that a marking button which marks whether the fuse is intact can be observed between the legs of the fork. In the respective end wall of the drawer, a transparent cap 31 is inserted to receive the marking button should the fuse burn.

I sikringens indlagte stilling er dennes anden ende 32 optaget i en udsparing 21 i skuffens bagvæg, således at denne anden ende 30 rager ud forbi bagvæggen. Denne anden ende udgør sikringens andet kontaktorgan, og dette er forsynet med en krave 33. Diameteren af kraven 33 er afstemt efter sikringens størrelse, altså efter sikringens normerede maksimalstørrelse, og det vil derfor forstås, at man ved valg af udsparingen 21's størrelse kan tilpasse gruppesikringen efter 35 den ønskede størrelse af sikringen. Ved sin udadvendende ende er skuffen forsynet med et riflet fingergreb 34.In the inset position of the fuse, its other end 32 is accommodated in a recess 21 in the rear wall of the drawer, so that this other end 30 protrudes past the rear wall. This other end constitutes the second contact member of the fuse, and this is provided with a collar 33. The diameter of the collar 33 is adjusted according to the size of the fuse, ie according to the normal maximum size of the fuse, and it will therefore be understood that by selecting the size of the recess 21, the group fuse can be adjusted. after 35 the desired size of the fuse. At its outward end, the drawer is provided with a grooved finger grip 34.

Den viste gruppeafbryder er forsynet med en vippeafbryder med et manøvreorqan i form af en vippearm 36. Vippeafbryderen er forsynetThe group switch shown is provided with a rocker switch with a maneuvering device in the form of a rocker arm 36. The rocker switch is provided

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med en fod 37, der ved hjælp af en tap 38 er drejeligt lejret i huset 1 omkring en akse 39. Foden er forsynet med en udsparing 40, hvori der er optaget den ene ende af en fjeder 42. Den pågældende ende er ombøjet og er hægtet omkring en tap 42 i udsparingen 40. Tappen 42 5 er anbragt mellem vippearmen 36 og vippearmens vippeakse 39. Fjederen 41's anden ende er hægtet omkring en tap 44 på en kontaktbro 45, og denne er forskydeligt og vippeligt lejret i en slids 46 i huset 1 ved hjælp af en tap 44a. Den ene ende af kontaktbroen 45 er forsynet med en kontakt 47 til samvirkning med klemmen 2"s kontakt 10, og broens 10 anden ende tjener til tilvejebringelse af kontakt med sikringen 23's kontaktorgan 32. Foden 37 er endvidere forsynet med et hul 48, hvori der svingeligt er lejret den ene ende af en knæ led s vægtstang 49, hvis anden ende 50 kan glide langs en sideflade 51 i huset 1. Hullet 48 er anbragt på den i forhold til tappen 42 modsatte side af aksen 39. Foden 15 37 har endvidere en cylindrisk anlægsflade 52, hvis akse er sammenfal dende med vippeaksen 39, og som i den på tegningen viste stilling hviler mod undersiden 24 af skuffens bund 25 og derved sikrer indgrebet mellem palfremspringet 29 og palhjulet 18. Forsat i forhold til den cirkulære anlægsflade 52 har foden 37 en affasning 53, hvis afstand 20 fra vippeaksen 39, målt vinkelret på affasningen 53's retning, er mindre end den cirkulære anlægsflade 52's radius, nemlig så meget mindre som tykkelsen af det kileformede mellemrum 27 ved indgrebsstedet mellem den cylindriske anlægsflade 52 og skuffens bund 25.with a foot 37 rotatably mounted in the housing 1 around an axis 39 by means of a pin 38. The foot is provided with a recess 40 in which one end of a spring 42 is received. The end in question is bent and is is pivoted about a pin 42 in the recess 40. The pin 42 5 is disposed between the rocker arm 36 and the rocker axis 39 of the rocker arm. The other end of the spring 41 is pivoted about a pin 44 on a contact bridge 45, and this is slidably and tiltably mounted in a slot 46 in the housing. 1 by means of a pin 44a. One end of the contact bridge 45 is provided with a contact 47 for cooperating with the contact 10 of the clamp 2, and the other end of the bridge 10 serves to provide contact with the contact member 32. The foot 37 is further provided with a hole 48, wherein pivotally, the one end of a knee joint's lever 49 is supported, the other end 50 of which can slide along a side surface 51 of the housing 1. The hole 48 is disposed on the opposite side of the axis 39 relative to the pin 42. The foot 15 37 further has a cylindrical abutment surface 52, the axis of which coincides with the pivot axis 39, and which, in the position shown in the drawing, rests on the underside 24 of the bottom 25 of the drawer, thereby ensuring the engagement between the pawl projection 29 and the pawl 18. Continued relative to the circular abutment surface 52 has the foot 37 is a bevel 53, the distance 20 of the tilt axis 39, measured perpendicular to the direction of the bevel 53, is less than the radius of the circular abutment 52, that is, much less than the thickness of the wedge-shaped intermediate space 27 at the point of engagement between the cylindrical abutment surface 52 and the bottom 25 of the drawer.

Den viste gruppeafbryder virker på følgende måde: 25 I den på tegningen viste stilling er gruppeafbryderen indkoblet, og fjederen 41 holder kontaktbroen 45 i anlæg mod sikringen 23's kontaktorgan 32 og mod kontakten 10. Anlægsfladen 52 sikrer endvidere skuffen i den viste stilling, hvori der er indgreb mellem palfremspringet 29 og palhullet 18, og vippearmen 36's stilling er sikret takket være 3° tappen 42's ekscentriske stilling i forhold til vippeaksen 39.The shown group switch acts as follows: In the position shown in the drawing, the group switch is engaged and the spring 41 holds the contact bridge 45 in contact with the contact means 32 of the fuse 23 and against the contact 10. The contact surface 52 further secures the drawer in the shown position in which there is engagement between the pawl projection 29 and the pawl hole 18, and the position of the rocker arm 36 is secured thanks to the eccentric position of the pin 42 relative to the rocking axis 39.

Såfremt sikringen 23 brænder over, hvilket kan iagttages gennem hætten 31, således som forklaret i det foregående, afbrydes gruppeafbryderen ved at vippe vippearmen 36 fra den på tegningen viste stilling i urviserretningen ca. 60°. Derved bevæges tappen 42 til den anden side 35 for vippeaksen 39, og fjederen 41 holder derved vippearmen 36 i den omstillede stilling. Samtidig vil den cylindriske anlægsflade 52 blive 5If the fuse 23 burns over, which can be observed through the cap 31, as explained above, the group switch is turned off by tilting the rocker arm 36 from the position shown in the drawing in a clockwise direction approx. 60 °. Thereby, the pin 42 is moved to the other side 35 of the rocker axis 39, and the spring 41 thereby holds the rocker arm 36 in the switched position. At the same time, the cylindrical abutment surface 52 will become 5

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drejet bort fra indgreb med undersiden af skuffen, og i stedet vil affasningen 53 stille sig tilnærmelsesvis parallelt med og i afstand fra undersiden af skuffens bund og i flugt med oversiderne 26 af afsatserne. Hullet 48 vil blive bevæget således, at den deri lejrede knævægt-5 stang 49 vil bevæge sig forbi en stilling, i hvilken den befinder sig rettet mod vippeaksen 39, altså til en over-center-stilling, og samtidig vil enden 50 af knævægtstangen blive forskudt til venstre på tegningen langs sidefladen 51, hvorved broen 45 bevæges til udrykning af kontakten 47 fra kontakten 50 og dermed fra den strømførende leder.turned away from engagement with the underside of the drawer, and instead the bevel 53 will be positioned approximately parallel to and spaced from the underside of the bottom of the drawer and in alignment with the upper sides 26 of the ledges. The hole 48 will be moved such that the knee weight bar 49 therein housed there will move past a position in which it is directed to the tilt axis 39, i.e. to an over-center position, and at the same time the end 50 of the knee weight bar will be offset to the left of the drawing along the side surface 51, whereby the bridge 45 is moved to extend the contact 47 from the contact 50 and thus from the live conductor.

10 Samtlige de i det foregående beskrevne operationer sker samtidigt med vippearmen 36's vipning.All of the operations described above occur simultaneously with the tilt of the rocker arm 36.

For udtagning af skuffen presses fingergrebet 34 nedefter, hvilket der nu er plads til takket være afstanden mellem affasningen 53 og skuffens bund 24. Derved udløses indgrebet mellem palfremspringet 15 29 og palhullet 18, og skuffen vil, når fingertrykket slækkes, blive presset udefter til højre ved hjælp af kontaktbroen 45 og kraften fra fjederen 41. Ved den på tegningen viste udførelsesform er palhullet 18 i kontaktstykket 9 lidt underskåret, og palfremspringet 29 er bukket lidt fremefter, således at der opnås et positivt indgreb.For removing the drawer, the finger grip 34 is pressed downwards, which is now available thanks to the distance between the chamfer 53 and the bottom 24 of the drawer, thereby triggering the engagement between the pawl projection 15 29 and the pawl hole 18, and the drawer, when the finger pressure is relieved, will be pressed outwards to the right. by means of the contact bridge 45 and the force of the spring 41. In the embodiment shown in the drawing, the pawl hole 18 in the contact piece 9 is slightly undercut and the pawl projection 29 is bent slightly forward so that a positive engagement is obtained.

20 For at udløse denne forbindelse kræves det derfor, at skuffen til at begynde med presses lidt indefter mod fjederen 41's virkning, og først derefter kan vipning nedefter til udløsning af indgrebet finde sted. Kontaktbroen 45 er ved sin øverste ende forsynet med et fremspring 55, som befinder sig i en udsparing 56 i huset. Når kontaktbroen 25 har skubbet skuffen et stykke udad, svarende til den vandring, som udsparingen 56 tillader, at fremspringet 55 kan gennemløbe, er skuffen kommet så langt ud, at den let kan gribes med fingrene og trækkes endnu et stykke ud, således at sikringen 23 let kan gribes med fingrene. Den igennem palhullet 18 ragende ende af fjederen 19 sikrer, at skuf-30 fen ikke kan trækkes helt ud, idet oversiden af skuffens bagvæg med en ansiagsfiade 57 vil støde mod enden af fjederen 19. Man kan dog udtage skuffen helt ved at løfte enden af fjederen 19 med en skruetrækker, efter at skuffen er delvis udtrukket, således at skuffen kan erstattes med en anden skuffe, hvis udsparing 21 er tilpasset efter en anden sikringsstørrelse.20 In order to release this connection, it is therefore required that the drawer is initially pressed slightly inwardly against the action of the spring 41, and only then can downward tilting to release the engagement take place. The contact bridge 45 is provided at its upper end with a projection 55 which is located in a recess 56 in the housing. When the contact bridge 25 has pushed the drawer outward, corresponding to the travel that the recess 56 allows the projection 55 to pass through, the drawer has come out so far that it can be easily gripped with the fingers and pulled out one more, so that the fuse 23 can be easily grasped with your fingers. The end 19 of the spring 19 protruding through the pawl hole 18 ensures that the drawer 30 cannot be pulled completely out, since the top of the back wall of the drawer with an impeller 57 will abut the end of the spring 19. However, the drawer can be completely removed by lifting the end of the the spring 19 with a screwdriver after the drawer is partially pulled out so that the drawer can be replaced with another drawer, the recess 21 of which is adapted to a different fuse size.

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Sikringen udtages ved, at den først skydes lidt indefter, hvorved enden 30 bringes klar af kontaktorganet 28, hvorefter sikringen kan udtages ved at vippe bagenden op først. En frisk sikring indlægges på tilsvarende måde, og når dette er sket, trykkes skuffen ind ved 3 hjælp af fingergrebet 34, og når indskydning har fundet sted, vippes skuffen lidt opefter til tilvejebringelse af indgreb mellem palfremspringet 29 og paJhullet 18. Under den sidste del af indskydningen vil sikringen blive fastklemt mellem broen 45 og kontaktstykket 28 med et veldefineret kontakttryk, nemlig svarende til kraften i fjederen 41. Nu kan vip-10 pearmen 36 og dermed foden 37 vippes til den på tegningen viste stilling, hvorved skuffens stilling låses i kraft af anlægget af den cylindriske anlægsflade 52 mod undersiden af skuffen, og samtidigt er vippearmen 36 sikret i sin stilling, takket være tappen 42's over-center-stilling. Samtidigt vil knævægtstangen 49 blive bevæget til højre på teg-13 ningen, således at der nu også er tilvejebragt et veldefineret anlægs-tryk mellem kontakten 47 og kontakten 10.The fuse is removed by first sliding it inwards, thereby clearing the end 30 of the contact 28, after which the fuse can be removed by tilting the rear end first. A fresh fuse is inserted in a similar manner and when this is done, the drawer is pressed in by means of the finger grip 34, and when insertion has taken place, the drawer is tilted slightly upwards to provide engagement between the pawl projection 29 and the hole 18. of the insertion, the fuse will be clamped between the bridge 45 and the contact piece 28 with a well-defined contact pressure, corresponding to the force of the spring 41. Now the tilting arm 36 and thus the foot 37 can be tilted to the position shown in the drawing, thereby locking the position of the drawer in force. of the abutment of the cylindrical abutment surface 52 towards the underside of the drawer, and at the same time the rocker arm 36 is secured in its position, thanks to the over-center position of the pin 42. At the same time, the knee bar 49 will be moved to the right of the drawing, so that a well-defined abutment pressure is now also provided between the switch 47 and the switch 10.

Det vil forstås, at i den på tegningen viste sluttede stilling er kraften af fjederen 41 opdelt mellem sikringen og kontakten 10 svarende til afstandene fra tappen 44 og til de to kontaktsteder. Ved at vælge 2® tappen 44's placering midt på broen 45 vil kontakttrykkene blive lige store. Det vil endvidere forstås, at tappen 42's over-center-stilling og hullet 48's over-center-stilling i afbryderens afbrudte stilling er valgt på en sådan måde, at fjederen 41 giver et resulterende moment på broen 45 omkring enden 50 af knævægtstangen 49 i urviserretningen, 25 således at den i det foregående forklarede udadgående påvirkning på sikringen 23 og derigennem på skuffen sikres under skuffens udskydning.It will be appreciated that in the closed position shown in the drawing, the force of the spring 41 is divided between the fuse and the contact 10 corresponding to the distances from the pin 44 and to the two contact points. By selecting the 2® pin 44's location in the middle of the bridge 45, the contact pressures will be equal. It will further be understood that the over-center position of the pin 42 and the over-center position of the hole 48 in the cut-off position of the switch are selected such that the spring 41 provides a resultant torque on the bridge 45 about the end 50 of the knee bar 49 in the clockwise direction. 25 so that the outwardly explained exerting influence on the fuse 23 and thereby on the drawer is secured during the extension of the drawer.

Fjederen 41 tjener således til flere forskellige formål. I den på tegningen viste sluttede stilling tilvejebringer den kontakttryk ved begge 30 ender af sikringen 23 samt kontakttrykket mellem kontakterne 47 og 10, samtidig med at den sikrer vippearmen 36 i den stilling, hvor anlægsfladen 52 spærrer for skuffen 20's udløsning. I vippearmen 36's vippede stilling giver fjederen 41 en kraftpåvirkning på skuffen, således at denne føres delvis ud af sin udsparing 17, når skuffen ud-35 løses på den i det foregående beskrevne måde. Også i denne stilling sikrer fjederen 41 vippearmen 36's afbrudte stilling, og endvidereThe spring 41 thus serves a variety of purposes. In the closed position shown in the drawing, it provides contact pressure at both ends of the fuse 23 as well as the contact pressure between contacts 47 and 10 while securing the rocker arm 36 in the position where the abutment surface 52 blocks the release of the drawer 20. In the tilted position of the rocker arm 36, the spring 41 exerts a force on the drawer so that it is partially released from its recess 17 when the drawer 35 is released in the manner described above. Also in this position, the spring 41 ensures the disengaged position of the rocker arm 36, and furthermore

Claims (3)

10 Patentkrav.10 Patent Claims. 1. Gruppeafbryder med et hus (1) med klemmer (2,3) for indkobling af gruppeafbryderen i en ledning og med en skuffe (20) til en sikring (23), hvilken skuffe (20) er indskydelig i huset (1) til tilvejebringelse af kontakt mellem sikringens (23) ene kontaktorgan (30) 15 og husets ene klemme (3), hvilken gruppeafbryder endvidere er forsynet med en ved hjælp af en fjeder (41) ekscentrisk kraftpåvirket vippeafbryder med et manøvreorgan (36), hvilken vippeafbryder er indrettet til ved hjælp af en knæledsvægtstang (49) at slutte og afbryde en forbindelse mellem husets anden klemme (2) og sikringens andet kontaktorgan 20 (32), samt hvor skuffen (20) er låst i sin indskudte stilling og først kan udtages efter bevægelse af vippeafbryderen til afbrydelse af forbindelsen mellem husets anden klemme (2) og sikringens andet kontaktorgan (32), kendetegnet ved, at skuffen (20) er vippelig i sin i huset (1) indskudte stilling for ind- og udkobling af kontakten 25 mellem sikringens ene kontaktorgan (30) og husets ene klemme (3), og at vippeafbryderen er forsynet med en anlægsflade (52), der i vippeafbryderens sluttestilling er indrettet til låsning af skuffen (20) i dennes indskudte stilling, og at forbindelsen mellem husets anden klemme (2) og sikringens andet kontaktorgan (32) udgøres af en kontaktbro (45), 30 der er vippeligt og forskydeligt lejret i huset (1), idet fjederen (41) er forbundet med denne kontaktbro mellem dennes ender.A group switch with a housing (1) with terminals (2,3) for connecting the group switch in a line and with a drawer (20) to a fuse (23), which drawer (20) is slidable in the housing (1) to providing contact between the one contact member (30) 15 of the fuse (23) and the one terminal (3) of the housing, which group switch is further provided with an eccentric force-operated rocker switch with a maneuvering means (36) which is a rocker switch arranged to terminate and disconnect by means of a knee joint bar (49) a connection between the second clamp (2) of the housing and the second contact member 20 (32) of the fuse, and where the drawer (20) is locked in its inserted position and can only be removed after movement of the rocker switch for disconnecting the connection between the second terminal (2) of the housing and the second contact means (32), characterized in that the drawer (20) is tiltable in its position inserted in the housing (1) for switching on and off the contact 25 between the fuse one contact member (30 ) and the one clamp (3) of the housing, and that the rocker switch is provided with a contact surface (52) arranged in the final position of the rocker switch for locking the drawer (20) in its inserted position, and that the connection between the second clamp (2) and the second contact member (32) of the fuse is constituted by a contact bridge (45) 30 which is tiltably and slidably mounted in the housing (1), the spring (41) being connected to this contact bridge between its ends. 2. Gruppeafbryder ifølge krav 1, kendetegnet ved, at skuffen (20) er forsynet med et ledende palfremspring (29) eller et palhul til indgreb med et palhul (18), henholdsvis et palfremspring 35. et i huset (1) fastholdt kontaktstykke (9), der er forbundet med DK 152157 B husets ene klemme (3)# samt at vippeafbryderen har en affasning (53), der i vippeafbryderens brydestilling befinder sig i afstand fra skuffen (20) og derved tillader dennes vipning.Group switch according to claim 1, characterized in that the drawer (20) is provided with a conductive pawl projection (29) or a pawl hole for engagement with a pawl hole (18) and a pawl projection 35. A contact piece (1) held in the housing (1) 9), which is connected to one terminal (3) # of the housing (DK) 152157 B and that the rocker switch has a bevel (53) which, in the switch position of the rocker switch, is at a distance from the drawer (20) and thereby allows its tilting. 3. Gruppeafbryder ifølge krav 1, kendetegnet ved, 5 at knæledsvægtstangen (49) er svingeligt forbundet med vippeafbry deren og er forskydeligt anbragt i huset (1) for samvirkning med kontaktbroen (45).Group switch according to claim 1, characterized in that the knee joint bar (49) is pivotally connected to the rocker switch and is slidably arranged in the housing (1) for interaction with the contact bridge (45).