NO753946L

NO753946L -

Info

Publication number: NO753946L
Application number: NO753946A
Authority: NO
Inventors: Bjoern Ericson
Original assignee: Asea Ab
Priority date: 1974-11-27
Filing date: 1975-11-24
Publication date: 1976-05-31
Also published as: NL7513687A; FI753322A; SE7414867L; SE387013B; DK536675A; FR2293082A1; DE2551192A1

Description

Frakoplingsbar koplingsplintDetachable terminal block

Oppfinnelsen angår en frakoplingsbar kolings-The invention relates to a disconnectable coal-

plint av den type som er angitt i innledningen til, patentkravplinth of the type specified in the introduction to, patent claim

1. 1.

Koplingsplinter med frftkoplingspropp er tidligere kjent. Ved en på markedet forekommende utførelse er frakoplingsproppen løstagbar og kan i plintens frastilling forvares innskjøvet i plintlegemet med proppens kontaktelement vendende utad. Dette medfører imidlertid den ulempe at kontaktelementene Terminal blocks with quick connection plugs are previously known. In the case of a version available on the market, the disconnection plug is removable and can be stored when the terminal is in the off position, pushed into the terminal body with the plug's contact element facing outwards. However, this entails the disadvantage that the contact elements

på denne måte blir utsatt for forurensninger av fett og smuss, hvilket kan ødelegge en pålitelig kontaktfunksjon. En annen ulempe ved denne utførelse er at proppene lett kommer bort. in this way is exposed to contamination from grease and dirt, which can destroy a reliable contact function. Another disadvantage of this design is that the plugs easily come off.

Også utførelser'der frakoplingsproppen er umistbart anordnet i plintlegemet, er tidligere kjent (tysk bruks-mønster 1 664 980 og svensk utlegningsskrift 367 515). Ved Also designs in which the disconnection plug is irremovably arranged in the terminal body are previously known (German utility model 1 664 980 and Swedish specification 367 515). By

disse sistnevnte utførelser der det imidlertid en viss fare for at proppene utilsiktet kan skyves inn i tilstillingen, these latter designs where, however, there is a certain risk that the plugs can be inadvertently pushed into the fitting,

særlig når sentrumavstanden mellom inntil hverandre beliggende plinter/i en plintrekke er forholdsvis liten (vanligvis er denne avstand bare ca. 6-7 mm). Dessuten er stillingsindikeringen especially when the center distance between adjacent terminals/in a terminal row is relatively small (usually this distance is only approx. 6-7 mm). In addition, the position indication is

ved disse utførelser ikke helt tilfredsstillende, da man ved betraktning av en.plintrekke rett forfra bare med vanskelighet kan avgjøre i hvilken koplingsstilling frakoplingsproppen befinner seg. with these designs not completely satisfactory, since by looking at a row of terminals straight from the front it is only with difficulty to determine in which connection position the disconnection plug is located.

Formålet med oppfinnelsen er å tilveiebringeThe purpose of the invention is to provide

en frakoplingsbar koplingsplint med frakoplingspropp som i uttrukket stilling på enkel måte kan sperre mot utilsiktet inntrykking, og som dessuten muliggjør en tydelig stillings-indikering. Dette oppnås ved hjelp av de foranstaltninger a disconnectable terminal block with a disconnection plug which, in the extended position, can easily block against accidental impact, and which also enables a clear position indication. This is achieved by means of the measures

som er angitt i den kjennetegnende del av patentkrav 1. which is stated in the characterizing part of patent claim 1.

Fordelaktige utførelser av oppfinnelsen og hvilke spesielle fordeler disse medfører, fremgår av den etterfølgende f igurbeskrivelse og underkravene..Advantageous embodiments of the invention and what special advantages these entail are evident from the following figure description and the sub-claims.

Oppfinnelsen skal beskrives nærmere i det følgende i forbindelse med tegningen,, der fig. la og lb viser en frakoplingsbar koplingsplint i tilstillingen, sett hhv. fra siden og forfra, fig. 2a og 2b viser samme plint i frastillingen, og fig. 3 viser et antall sådanne plinter montert i en rekke på en monteringsskinne. The invention shall be described in more detail below in connection with the drawing, where fig. la and lb show a disconnectable terminal block in the configuration, set respectively. from the side and from the front, fig. 2a and 2b show the same plinth in the removed position, and fig. 3 shows a number of such terminals mounted in a row on a mounting rail.

Den på tegningen viste koplingsplint omfatter et elektrisk isolerende, plateformet plintlegeme 1 som er forsynt med festeorganer 2 for fastsettelse på en monteringsskinne 3 (fig. 3) av standard type' .(f .-.eks. ifølge SEN R 36 03 13). Plinten er forholdsvis smal (f.eks. 7 mm) og er beregnet for å monteres i en rekke av et.antall liknende plinter på skinnen 3, idet plintlegemets plan står vinkelrett på skinnen slik det fremgår av fig. 3. Plintrekken låses i sideret-ningen ved hjelp av endestøtter 4. Plintlegemet bærer to tilkoplingsorganer for innkommende og utgående ledere. Det ene tilkoplingsbrgan utgjøres av to massive kontaktstifter 5 som er festet på en kontaktskinne 6, mens det andre tilkoplingsorgan utgjøres av en skrueklemme 7 anordnet på en kontaktskinne 8. The connection terminal shown in the drawing comprises an electrically insulating, plate-shaped terminal body 1 which is provided with fastening means 2 for fixing on a mounting rail 3 (fig. 3) of a standard type (e.g. according to SEN R 36 03 13). The plinth is relatively narrow (e.g. 7 mm) and is intended to be mounted in a series of a number of similar plinths on the rail 3, the plane of the plinth body being perpendicular to the rail as shown in fig. 3. The terminal strip is locked in the lateral direction by means of end supports 4. The terminal body carries two connection elements for incoming and outgoing conductors. One connection bridge consists of two massive contact pins 5 which are attached to a contact rail 6, while the other connection means consists of a screw clamp 7 arranged on a contact rail 8.

De massive kontaktstifter 5 er innrettet til å samvirke med fjærende kontakthylser som er fastpresset på de ledninger som skal tilkoples. For strekkavlasting av disse ledninger finnes spesielle fastholdelsesorganer 9 som er festet i plintlegemet 1. Disse organer kan med fordel ut-gjøres av fjærende låseplater av den i svensk patent 321 730 viste utførelse, men de trenger i det foreliggende tilfelle ikke nødvendigvis å være utført av metallisk materiale. The massive contact pins 5 are arranged to cooperate with springy contact sleeves which are firmly pressed onto the wires to be connected. For strain relief of these cables, there are special retaining means 9 which are attached to the terminal body 1. These means can advantageously be made of spring-loaded locking plates of the design shown in Swedish patent 321 730, but in the present case they do not necessarily need to be made of metallic material.

Kontaktskinnen 6 er forsynt -med et gjenget hull 10 i hvilket det ved behov kan anordnes et måleuttak i The contact rail 6 is provided with a threaded hole 10 in which, if necessary, a measuring outlet can be arranged in

form av en for en såkalt bananpropp beregnet hylse 11 (fig. form of a sleeve 11 intended for a so-called banana plug (fig.

3). Måleinstrumenter kan også tilkoples til kontaktskinnen3). Measuring instruments can also be connected to the contact rail

8 ved at klemmen 7 er forsynt med en hylseskrue 12 i hvilken en bananpropp kan innskyves. Plintlegemet er forsynt med en uttagning 13 for en merkebrikke 14. 8 in that the clamp 7 is provided with a sleeve screw 12 into which a banana plug can be inserted. The terminal body is provided with a recess 13 for a tag 14.

Koplingsplintens f rakoplingsanord.ning utgjøresThe connecting terminal's remote connection device is made up

av en i lengderetningen forskyvbar, langstrakt propp av isolermateriale hvis indre del utgjøres av en kontaktelementholder 15 og hvis ytre del utgjøres av en som håndtak utformet man-øverdel 16. Kontaktelementholderen 15 bærer et av f.eks. en profilstang fremstilt kontaktelement 17 som i plintens tilstilling (fig. 1) forbinder kontaktskinnene 6 og 8. Kontakt-trykket tilveiebringes da ved hjelp av en i holderen 15 inn-bygget trykkfjær 18. Kontaktelementholderen 15 er utført med to fjærende ben som er forsynt med fremspring 19 som er slik anordnet at de i plintens til- hhv. frastilling danner inngrep med spor 20 hhv. 21 i plintlegemet 1. of a longitudinally displaceable, elongated plug of insulating material whose inner part is made up of a contact element holder 15 and whose outer part is made up of a man-top part 16 designed as a handle. The contact element holder 15 carries one of e.g. a contact element 17 made of a profile rod which in the plinth position (fig. 1) connects the contact rails 6 and 8. The contact pressure is then provided by means of a pressure spring 18 built into the holder 15. The contact element holder 15 is made with two springy legs which are provided with projections 19 which are arranged in such a way that they in the plinth respectively relinquishment forms engagement with track 20 respectively. 21 in the terminal body 1.

Manøverdelens 16 indre ende utgjøres av en sylindrisk, hodeforsynt tapp 22 som står i koplingsinngrep med et spor i kontaktelementholderen 15. Forøvrig er manøverdelen . utformet i hovedsaken som et rettvinklet parallellepiped med avlangt kvadratisk tverrsnitt og er styrt i et ., til dette tverrsnitt svarende hull i plintlegemets frontplate. Tverr-snittets diagonal er tilnærmet like stor som plintlegemets bredde. The inner end of the maneuvering part 16 is made up of a cylindrical, head-provided pin 22 which is in coupling engagement with a slot in the contact element holder 15. Otherwise, the maneuvering part is . mainly designed as a right-angled parallelepiped with an elongated square cross-section and is guided in a ., corresponding to this cross-section hole in the terminal body's front plate. The diagonal of the cross-section is approximately as large as the width of the terminal body.

Strømkretsen gjennom plinten brytes ved at frakoplingsproppen 15, 16 trekkes,ut fra den på fig. 1 til den på fig. 2 viste stilling. For å hindre at proppen trekkes helt ut av plintlegemet, er. sistnevnte forsynt med frem-stikkende veggpartier 23 som sperrer veien for kontaktelementholderen 15. The current circuit through the terminal is broken by pulling the disconnect plug 15, 16, from the one in fig. 1 to the one in fig. 2 shown position. To prevent the plug from being pulled completely out of the terminal body, is. the latter provided with protruding wall parts 23 which block the way for the contact element holder 15.

I plintens frastilling befinner manøverdelensThe maneuvering part is located in the recess of the plinth

16 parallellepipedformede del seg foran plintlegemets frontflate hvorved manøverdelen kan vris 90° i forhold til kontaktelementholderen 15. En del av manøverdelens bakre kvadratiske over-flate vil da ligge an mot plintlegemets frontflate, slik at frakoplingsproppen sperres mot utilsiktet inntrykkihg. 16 parallelepiped-shaped part in front of the front surface of the terminal body, whereby the maneuvering part can be turned 90° in relation to the contact element holder 15. A part of the rear square surface of the maneuvering part will then rest against the front surface of the terminal body, so that the disconnection plug is blocked against accidental impact.

Manøverdelens kvadratiske frontflate er forsynt med et langsgående midtspor 24 som tjener som stillingsindi-.kering og tydelig viser i hvilken koplingsstilling plinten befinner seg. Dette fremgår av fig. 3 der plint nr. 4 befinner seg i sperret, frastilling, mens de øvrige plinter befinner seg i tilstillingen. The square front surface of the maneuvering part is provided with a longitudinal central groove 24 which serves as a position indicator and clearly shows in which connection position the terminal is located. This is evident from fig. 3 where terminal no. 4 is in the blocked, off position, while the other terminals are in the position.

Ved å benytte passende plastmateriale i frakoplingsproppen 15, 16, og å utføre koplingen mellom dens manøverdel 16 og kontaktelementholder 15 eksempelvis på By using suitable plastic material in the disconnect plug 15, 16, and making the connection between its operating part 16 and contact element holder 15, for example on

den på tegningen viste måte, kan det oppnås en viss liten aksial fjæring mellom de nevnte deler 15 og 16. Dette i kombi-nasjon med et til manøverdelens bakre kvadratiske endeflate svarende, grunt tverrgående spor i plintlegemets frontflate, gjør at den person som foretar vridningen av manøverdelen in the manner shown in the drawing, a certain small axial suspension can be achieved between the aforementioned parts 15 and 16. This, in combination with a shallow transverse groove in the terminal body's front surface corresponding to the rear square end surface of the maneuvering part, means that the person who performs the twisting of the maneuvering part

16, oppnår en distinkt markering av manøverdelens sperrestilling hhv. frikoplingsstilling. 16, achieves a distinct marking of the locking position of the maneuvering part or release position.

Den på tegningen viste kontaktutførelse er passende for en merkestrøm på eksempelvis 20 A og kan uten vanskelighet dimensjoneres for å tåle en strøm på f.eks. The contact design shown in the drawing is suitable for a rated current of, for example, 20 A and can easily be dimensioned to withstand a current of, for example

350 A under 1 sek. uten utillatelig temperaturstigning. For lavere merkestrøm, f.eks. 10 A, kan kontaktanordningen ut-føres på enklere måte slik at det ikke kreves noen spesiell kontaktfjær. Eksempelvis kan det bevegelige kontaktelement utføres som en U-formet gaffel med fjærende ben innrettet til å innskyves over eller mellom de to kontaktskinner 6 og 8 som da med fordel er' vridd eller bøyd 90° i forhold til den på tegningen viste stilling. 350 A under 1 sec. without an unacceptable temperature rise. For lower rated current, e.g. 10 A, the contact device can be designed in a simpler way so that no special contact spring is required. For example, the movable contact element can be designed as a U-shaped fork with spring legs arranged to be inserted over or between the two contact rails 6 and 8 which are then advantageously twisted or bent 90° in relation to the position shown in the drawing.

Tilkoplingsorganene 5 og 7 trenger ikke nødvendig-vis være av forskjellig utførelse. I visse tilfeller kan det være passende å benytte tilkoplingsorganer av stikkontakttype på plintens begge sider. The connecting members 5 and 7 do not necessarily have to be of different design. In certain cases, it may be appropriate to use socket-type connection means on both sides of the terminal block.

Claims

1. Detachable connection terminal comprising a mainly flat, insulating terminal body (1) with connection means (5, 7) for at least one incoming and one outgoing conductor, as well as an elongated disconnecting plug (15, 16) of insulating material, whose inner end part (15) constitutes of a holder for a contact element (17) and whose outer end part (16) consists of a handle or similarly designed man-upper part, the disconnection plug (15, 16) being displaceable in its longitudinal direction between an outer position (the disengaged position) in which the incoming conductor is electrically separated from the outgoing conductor, and an internal position (the position) i which the said contact element (17) connects the two conductors to each other, characterized in that the upper control part (16) is arranged so that in the said disengaged position it is rotatable about the longitudinal axis of the plug (15, 16) to a locking position in which the control part (16 ) forms locking engagement with an edge, surface or similar of the terminal body (1), whereby longitudinal displacement of the plug (15, 16) is prevented.

2. Connection terminal according to claim 1, characterized in that the said maneuvering part (16) has a mainly rectangular cross-section whose diagonal is approximately as large as the width of the terminal body (1).

3. Terminal block according to claim 1 or 2, characterized in that the maneuvering part (16) has an elongated rectangular front surface with a longitudinal central groove (24) which. in the aforementioned position is directed parallel to the plane of the terminal body (1) and in the aforementioned locking position essentially perpendicular to this

4. Connection terminal according to claim 1, 2 or 3, characterized in that the disconnection plug (15, 16) is irremovably arranged in the terminal body (1).

5. Connection terminal block according to one of the preceding claims, characterized in that the contact element holder (15) is provided with spring legs which are arranged to engage with the terminal block body (1) for fixing the plug (15, 16) in the said or waiver.

6. Terminal block according to one of the preceding claims, characterized in that the inside of the maneuvering part (16). . end is formed by a cylindrical head-equipped pin (22) which is in coupling engagement with a recess in the contact element holder (15).

7. Terminal block according to one of the preceding claims, characterized in that the maneuver part (16) is as follows arranged so that when twisted in the aforementioned position by spring engagement with grooves or the like in the terminal body (1), it provides a distinct marking of the locking position of the maneuvering part (16) or release position.

8. Terminal block according to one of the preceding claims, characterized in that the contact element (17) is displaceable in the contact element holder (15) against the action of a pressure spring (18) arranged in the holder.

9. Connection terminal block according to one of the preceding claims, characterized in that at least one of the connection elements consists of at least one cylindrical contact pin (5) fixed on a contact rail (6) which is arranged to cooperate with eh on the said incoming or outgoing conductor fixed contact sleeve, as the terminal body (1) is equipped with an automatically acting retaining means (9) for detachable fixed- locking of the contact sleeve when it is pushed into its contact position on the aforementioned contact pin (5).

10. Connection terminal according to claim 5, characterized in that a number of contact pins (5) are attached to the said contact rail (6) which are arranged in a common plane which lies essentially parallel to the terminal body (1).

11. Terminal block according to claim 9 or 10, characterized in that the said contact rail (6) is provided with an outlet (11) for the temporary connection of measuring instruments.

12. Terminal block according to one of the preceding claims, characterized in that the terminal's one connecting o.rgan (7) is of the screw type, while the other connecting member (5) is of the socket type.

13. Connection terminal according to one of the preceding claims, characterized in that the terminal body (1) is provided with fastening means (2) for attachment to e.g. a mounting rail (3) so that the plane of the terminal body is at right angles to the rail (3).

14. Coupling terminal according to claim 9, characterized in that said retaining means (9) comprises one or more springy tongues or the like which are arranged to engage with said contact sleeve when it is pushed into its contact position.