DK163155B

DK163155B - BUTTON SWITCH

Info

Publication number: DK163155B
Application number: DK152583A
Authority: DK
Inventors: Peter Hans Neumann
Original assignee: Neumann F Elektroapp
Priority date: 1982-04-07
Filing date: 1983-04-06
Publication date: 1992-01-27
Also published as: DK152583A; DK163155C; IT1160176B; DE3212937C2; DE3212937A1; DK152583D0; IT8319095A0

Description

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DK 163155 BDK 163155 B

Opfindelsen angår en trykknapafbryder, hvis trykknap betjener en koblestift, der drejer sig skridtvis ved trykknappens betjening, er forskydelig mellem to aksialstillinger og bærer en mod den frie ende med 5 en fjeder belastet ringkontakt, som alt efter koblestiftens aksialstilling forbinder to i huset forhåndenværende faste kontakter med hinanden eller adskiller dem fra hinanden, og som medbringes i drejningsretning af koblestiften, der ved trykknapbetjening omskifter 10 gennem en fastlagt drejningsvinkel.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a pushbutton switch, the pushbutton actuating a coupling pin which rotates stepwise by the pushbutton operation, is slidable between two axial positions and carries a spring-loaded ring contact which, depending on the axial position of the coupling pin, connects two existing permanent contacts in the housing. with or apart from each other and which are brought in the direction of rotation of the coupling pin which, by push-button operation, switches 10 through a predetermined angle of rotation.

Man kan ikke længere forestille sig belysningslegemer, elektriske småapparater osv. uden sådanne trykknapafbrydere. Følgelig er der også fremsat talrige forslag om sådanne.One can no longer imagine lighting bodies, electric small appliances, etc. without such pushbutton switches. Consequently, numerous proposals have also been made.

15 Fra US patentskrift nr. 2 945 111, som viser en afbryder ifølge indledningen til krav 1, kendes eksempelvis en trykknapafbryder, ved hvilken medbringningen af ringkontakten sker ved hjælp af den ringkontakten belastende fjeder. Da fjederen såvel ved koblestiften 20 som ved ringkontakten kun ligger an i en gnidningsforbindelse, er det ikke udelukket, at kontaktgivningen, eksempelvis åbningen, i hovedsagen sker på et og samme sted, hvilket forårsager lokal materialeoverbelastning, som kan føres tilbage til afbrænding, der, når den 25 først én gang er indtruffet, stiger pludseligt og fører til standtider, som ikke kan overkommes, dvs. den kendte trykknapafbryder har en fdr ringe levetid.For example, from US Patent No. 2,945,111 which discloses a switch according to the preamble of claim 1, there is known, for example, a pushbutton switch, in which the bringing of the ring contact is effected by the spring contact straining the ring contact. Since the spring, at both the coupling pin 20 and at the annular contact, rests only in a rubbing connection, it is not excluded that the contacting, for example the opening, is essentially at one and the same place, which causes local material overload, which can be returned to burning, which once it has occurred, it suddenly rises and leads to non-overcoming stand-off times, ie. the known pushbutton switch has a very low life.

Ved opfindelsen tilsigtes tilvejebragt en trykknapafbryder, som med sikkerhed undgår anvendelse af et 30 og samme koblingspunkt således, at uafhængigt af de aktuelle friktionsforhold sikres både en udjævning af kontaktbelastningen og en fordelagtig glidebevægelse af kontakterne på hinanden. Derudover skal denne forbedring kunne opnås med et ringe komponentforbrug.The invention aims at providing a push-button switch which safely avoids the use of a 30 and the same switching point so that, regardless of the current frictional conditions, both a smoothing of the contact load and an advantageous sliding of the contacts on each other are ensured. In addition, this improvement should be achievable with low component consumption.

35 For at opfylde dette formål foreslås det ifølge opfindelsen, at den mellem den ved trykknapbetjening 235 In order to fulfill this purpose, it is proposed according to the invention that it be switched between the push button operation 2

DK 163155BDK 163155B

omskiftende koblestift og ringkontakten forhåndenværende og sidstnævnte belastende fjeder er udformet som medbringer, at denne medbringerf jeder omgiver koblestiften spiral- eller skruelinieformet og forspændt, 5 hvor denne fjeder dels ligger an mod et fremspring på koblestiften, dels ligger an mod ringkontakten, som mod stiftenden samvirker med et endestop, og at den medbringeren udgørende fjeder med den øverste og den neder s te ende ligger an mod anslag, hvoraf det ene hører 10 til koblestiften, og det andet hører til ringkontakten.switching coupler pin and ring contact present and latter load spring is designed to carry this coil spring surrounding the coupling pin spirally or helically and biased, 5 which this spring abuts against a protrusion on the coupler pin and abuts against the ring contact, with an end stop, and that the spring constituting the spring with the upper and lower ends abuts against the stop, one of which belongs to the coupling pin and the other belongs to the ring contact.

1 kraft af udformningen af fjederen som medbringer opfylder den to funktioner, nemlig belastningen af ringkontakten og sikring af medbringningen, således at den frygtede afbrænding på en vis måde med en ringe indsats 15 så godt som forhindres, således at materialeoverbelastningen ikke optræder, altså at væsentligt højere standtider lader sig opnå, hvilket svarer til en længere levetid .By virtue of the design of the spring carrying, it fulfills two functions, namely the loading of the ring contact and securing of the carrying, so that the dreaded burning in a certain way with a low insert 15 is almost prevented, so that the material overload does not occur, ie substantially higher durations are achievable, which corresponds to a longer service life.

Det kan ganske vist være, at ringkontakten ved 20 den kendte udformning ifølge US patentskrift nr.Admittedly, the ring contact of the known embodiment of U.S. Pat.

2 945 111 drejer med i kraft af den givne gnidningsforbindelse, men dette er ikke som ved ansøgningens genstand tvangsmæssigt, hvorfor den opfindelsesmæssige konstruktionsform er den kendte udformning klart over- 25 legen. Her skal det også bemærkes, at ved den kendte konstruktion er diameterforholdet mellem ringkontakten og medbringerf jederen ugunstigt, dvs. fjederens vægtarmsvirkning er ringe i forhold til den væsentlig større ringkontakt, hvorfor en sikker medbringning må be-30 tvivles. Ganske anderledes ved opfindelsens genstand, ved hvilken det tilvejebragte anslag medfører, at ringkontaktens medbringning er tvunget. Som væsentlig fordel ved tvangsmedbringningen, skal endvidere nævnes, at ved afbrydning virker medbringerfjederen også som tor-35 sionsfjeder, hvorved den i samvirke med trykbelastningen fører til en glidning af ringkontakten mod modkon- 32,945,111 rotates by virtue of the given rubbing connection, but this is not as in the subject matter of the application, therefore the inventive constructional form of the known design is clearly superior. It should also be noted here that in the known construction, the diameter relationship between the ring contact and the carrier spring is unfavorable, ie. The spring arm action of the spring is poor in relation to the substantially larger ring contact, so a safe carrying must be doubted. Quite different from the subject matter of the invention, in which the abutment provided causes the bringing of the ring contact to be forced. In addition, as a significant advantage of the forced attachment, it should be mentioned that when the disconnection is interrupted, the carrier spring also acts as a torsion spring, whereby in conjunction with the pressure load it leads to a sliding of the ring contact against the counter-3.

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takten, hvilket medfører en rengøringseffekt. Torsionsbelastningen eller den drejende kraft fra fjederen bliver således større desto mere den bremsende afbrænding, som aldrig helt kan udelukkes, stiger. Med andre ord 5 betyder dette, at ved tiltagende afbrænding indtræder også en tiltagende afstrygningseller rengøringseffekt, altså opnås i forhold til det kendte såvel en yderligere udjævning af kontaktbelastningen som en fordelagtig glidebevægelse af kontakterne mod hinanden.the rate, which results in a cleaning effect. Thus, the torsional load or the rotational force of the spring becomes greater the more the braking firing, which can never be completely eliminated, increases. In other words, 5 this means that with increasing firing, an increasing stripping or cleaning effect also occurs, that is, relative to the known, a further leveling of the contact load as well as an advantageous sliding of the contacts against each other is achieved.

10 Ringkontaktens anslag kan udgøres af et mate rialefremspring på oversiden, der f.eks. er opstået ved et kørnerslag fra neden, mens det øvre anslag for med-bringerfj ederen kan være udformet i ét stykke med den af plast bestående koblestift. Ved denne opbygning er 15 der gået ud fra, at medbringerens fjedertråd trykpåvirkes. I og for sig kunne fjedertråden også trækbelastes, uden at man forlader opfindelsens rammer, dvs. det forekommer muligt, at man ombukker fjederenderne til øskener og haanger dem på passende vederlag. I hvert 20 fald tilkommer der for så vidt den drejningselastiske medbringer en særlig betydning, som der som følge af det af elasticiteten forårsagede efterløb af ringkontaktens drejebevægelse i forhold til koblestiftens dre-jebevægelse optraader en selvrensningseffekt på kontakt-25 stederne, idet kontaktstederne - sammenligneligt med slæbekontakter - på sin vis viskes rene.The stop of the ring contact can be a material protrusion on the upper side, e.g. is formed by a core stroke from below, while the upper stop of the carrier spring may be integrally formed with the plastic coupling pin. In this construction, 15 the assumption is that the spring wire of the carrier is pressurized. In itself, the spring wire could also be tensioned without leaving the scope of the invention, i.e. it seems possible that the spring ends are folded into sashes and hung for appropriate consideration. In every 20 cases, in so far as the pivot elastic carries a special significance, as a result of the elasticity caused by the elasticity of the rotary contact in relation to the rotational movement of the coupler pin, a self-cleaning effect occurs at the contact points, since the contact points - comparable to tow contacts - in a way, erase clean.

Det er endvidere hensigtsmæssigt, at endestoppet for ringkontakten - som kendt fra US patentskrift nr.Furthermore, it is convenient that the end stop of the ring contact - as known from US Patent No. 5,197,197, is disclosed.

3 790 734 - udgøres af en kegleformet fortykkelse, som 30 på kontaktsiden danner et fremspring, og at koblestift-enden har en aksialslids. En sådan koblestift kan fremstilles problemløst, f.eks. ved sprøjtestøbning, hvorhos aksialslidsen giver mulighed for at skyde ringkontakten over den kegleformede fortykkelse ind på koble-35 stiften.3,790,734 - is constituted by a cone-shaped thickening which forms a protrusion on the contact side and the coupling pin end has an axial slot. Such a coupling pin can be manufactured without problems, e.g. by injection molding, wherein the axial slot allows the annular contact to slide over the cone-shaped thickening onto the coupling pin.

Med henblik på med sikkerhed at bringe koblestiften i frakoblingsstillingen anses det i tilslut- 4In order to safely bring the coupling pin into the disconnect position, it is considered in connection 4

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ning til kendt teknik, (jf. GB patentskrift nr.prior art, (cf. GB patent no.

1 142 603) for gunstigt, at den nederste ende af koblestiften har en blindboring, i hvilken en mod koblestiften anliggende fjeder indgriber med forspænding.1 142 603) is advantageous that the lower end of the coupling pin has a blind bore into which a spring abutting the coupling pin engages with bias.

5 Med henblik på sluttelig, som det i og for sig er kendt fra GB patentskrift nr. 1 142 603, at forenkle montagen og dermed at opnå en for massefabrikationsartikler vigtig økonomi foreslås det, at hele koblemekanismen og også de kontakter, der skal forbindes med 10 hinanden, er indsat i plasthuset fra neden, og at huset er lukket med et nedre dæksel.5 In order, finally, as it is known per se from GB patent specification 1 142 603, to simplify assembly and thus achieve an economy important for mass fabrication articles, it is proposed that the entire coupling mechanism and also the contacts to be connected with 10 each other, is inserted into the plastic housing from below and that the housing is closed with a lower cover.

Opfindelsen fremgår eksempelvis af tegningen, hvor fig. 1 viser en trykknapafbryder ifølge opfin-15 delsen delvis i snit og delvis opbrudt, fig. 2 et snit langs linien II-II i fig. 1, og fig. 3 et snit langs linien III-III i fig. 1.The invention can be seen, for example, in the drawing, in which fig. 1 shows a pushbutton switch according to the invention partly in section and partly broken up; FIG. 2 is a section along line II-II of FIG. 1, and FIG. 3 is a section along line III-III of FIG. First

Som det fremgår af tegningen, navnlig af fig. 1, omfatter en trykknapafbryder 1 et hus 2 med et ned-20 re dæksel 3 og en trykknap 4. Trykknappen 4 betjener ved aksialpåvirkning i pilen 5's retning en ikke nærmere vist dreje- og kobleindretning, hvortil der hører en koblestift 6. Denne koblestift 6 bærer en ringkontakt 7, som er skudt ind på koblestiften 6 25 over en kegleformet endefortykkelse 8. Dette er muligt som følge af, at koblestiften 6 har en slids 9.As can be seen from the drawing, in particular from FIG. 1, a pushbutton switch 1 comprises a housing 2 with a lower cover 3 and a pushbutton 4. The pushbutton 4 actuates, in axial action in the direction of arrow 5, a rotating and coupling device not shown, to which a coupling pin 6 belongs. bears a ring contact 7 which is inserted on the coupling pin 6 25 over a cone-shaped end thickness 8. This is possible due to the coupling pin 6 having a slot 9.

En fjeder 10 ligger an mod ringkontakten 7, og det andet vederlag udgøres af et fremspring 11 30 på koblestiften 6. Desuden ses det, og det er væsentligt for opfindelsen, at fjederen 10's fjederender ligger an mod anslag henholdsvis 12 og 13, dvs. ved en drejebevægelse af koblestiften 6 frembyder fjederen 10 en elastisk medbringer for ringkontakten 7.A spring 10 abuts the annular contact 7, and the other remuneration is formed by a protrusion 11 30 on the coupling pin 6. Furthermore, it is seen and it is important for the invention that the spring ends of the spring 10 abut abutment 12 and 13, respectively. by a rotary movement of the coupling pin 6, the spring 10 provides an elastic carrier for the ring contact 7.

35 Det skal også nævnes, at koblestiften i det valgte udførelseseksempel i hvert enkelt tilfælde vide-35 It should also be noted that in each case the coupling pin in each case is

Claims

A pushbutton switch, the pushbutton (4) of which operates a coupling pin (6) which rotates incrementally by the operation of the pushbutton (4), is slidable between two axle positions and carries one towards the free end with a spring ( 10) loaded ring contact (7) which, depending on the axial position of the coupling pin (6), connects or separates two permanently fixed contacts (14, 15) in the housing (2) with each other and which are carried in the direction of rotation of the coupling pin (6) which switches, through a push-button operation, through a predetermined angle of rotation, characterized in that the present spring (10) between the switching pin (6) and the ring contact (7) which is switched by the push-button operation (10) is designed to cause this 163155 Bearing spring (10) surrounds the coupling pin (6) spirally or helically and biased, this spring (10) partly touching a protrusion (11) on the coupling pin (6) and partly abutting the ring contact (7) which 5 founders cooperates with an end stop (cf. 8) and that the spring-shaped spring (10) with the upper and lower ends abuts against stop (12, 13), one of which (12) belongs to the coupling pin (6) and the other (13) belongs to ring contact (7).

Switch according to Claim 1, characterized in that the stop (13) of the ring contact (7) is formed by a material projection on the upper side, e.g. is caused by a grain strike from below.

Switch according to claim 1 or 2, characterized in that the upper stop (12) of the carrier spring (10) is formed in a piece with the plastic pin (6).

Switch according to one or more of claims 1-3, characterized in that the end stop of the ring contact (7) on the coupling pin end is in a known manner in a known cone-shaped thickening (8) which forms on the contact side a projection, and the coupling pin end has an axial slot (9).

Switch according to one or more of claims 25 to 4, characterized in that the lower end of the coupling pin (6) has a blind bore (16) into which a spring (17) abutting against the coupling pin (17) engages. with bias.

Switch according to one or more of claims 30 to 5, characterized in that the entire coupling mechanism (cf. 4,6,10,17) and also the contacts (14,15) to be connected are inserted. in the plastic housing (2) from below, and that the housing (2) is closed with a lower cover (3).