SE507597C2

SE507597C2 - Connectors for detachable fixing at a pipe end

Info

Publication number: SE507597C2
Application number: SE9604660A
Authority: SE
Inventors: Olle Nordstroem
Original assignee: Hycop Ab
Priority date: 1996-12-18
Filing date: 1996-12-18
Publication date: 1998-06-22
Also published as: WO1998029680A1; SE9604660L; SE9604660D0

Abstract

Coupling device (1) for detachable fixing at a pipe end (2), which around its periphery has a radially projecting flange (3) against which an O-ring seal (4) bears. The coupling device (1) is characterised by a tubular inner part (5), which at a first end has a sealing surface (6), conforming to the O-ring seal (4). The inner part (5) has at least three arms (7) arranged around the periphery, which resiliently project radially out past the first end of the tubular inner part and are directed so that hooks (8), formed at their ends and directed radially inwards, can pass freely over the flange (3) and O-ring seal (4) when pushed onto the pipe end (2). A tubular outer part (9) is adapted to be passed over the inner part (5) from its second end and to press the spring arms (7) radially inwards until the hooks (8) are brought into engagement behind the radially projecting flange (3). The inner and outer parts have interacting elements (11, 12), which allow these to be fixed to one another by means of a twisting movement relative to one another. At least one window (18), through which a part of the inner part (5) is adapted to become visible when fixing has been accomplished, is incorporated into the outer part (9).

Description

507 597 10 15 20 25 30 35 2 Fig 2a visar en sprängskiss av ett uppfinningsenligt kopplingsdon, som förhindrar ett ﬂuidﬂöde ut genom kopplingsdonet, sett från en första vinkel. 507 597 10 15 20 25 30 35 2 Fig. 2a shows an exploded view of a connector according to the invention, which prevents a de uid ﬂ fate out through the connector, seen from a first angle.

Fig 2b visar en sprängskiss av kopplingsdonet enl ﬁg 2a, sett från en andra vinkel.Fig. 2b shows an exploded view of the connector according to g 2a, seen from a second angle.

F ig 3a visar ytterdelen av kopplingsdonet enl ﬁg la och lb i en uppbruten vy.Fig. 3a shows the outer part of the connector according to g 1a and 1b in a broken view.

Fig 3b visar ytterdelen av kopplingsdonet enl fig 2a och 2b i en uppbruten vy.Fig. 3b shows the outer part of the connector according to Figs. 2a and 2b in a broken view.

F ig 4 visar det uppﬁnningsenliga kopplingsdonet med inner- och ytterdel fixerade till varandra, men för tydlighet ej fixerade vid en rörände.Fig. 4 shows the inventive connector with inner and outer part fixed to each other, but for clarity not fixed at a pipe end.

F ig 5 visar ett delsnitt genom det uppﬁnningsenliga kopplingsdonet ﬁxerat vid en rör- ände.Fig. 5 shows a partial section through the suitable connector mounted at a pipe end.

För lika eller analoga detaljer används samma hänvisningsbeteckningar vid beskrivning av samtliga ﬁgurer.For identical or analogous details, the same reference numerals are used when describing all ﬁ gures.

I fig la och lb visas ett kopplingsdon 1 för lösbar fixering vid en rörände 2, vilken kring sin periferi har en radiellt utskjutande ﬂäns 3 mot vilken anligger en O-ringstätning 4 på dess mot röränden vända sida.Figures 1a and 1b show a connector 1 for releasable fixing at a pipe end 2, which around its periphery has a radially projecting end 3 against which an O-ring seal 4 abuts on its side facing the pipe end.

Kopplingsdonet 1 innefattar en väsentligen rörformig innerdel 5, vars innerdiameter väsentligen motsvarar rörets ytterdiameter. Vid en första ände uppvisar innerdelen en tätningsyta 6, som är avpassad att tätande anligga mot O-ringstämingen 4. Innerdelen 5 uppvisar dessutom tre kring periferin anordnade armar 7, vilka radiellt fjädrande sticker ut förbi den rörformiga innerdelens första ände. Armarna 7 är riktade så att vid dess ändar utförda, radiellt inåt riktade hakar 8, fritt kan passera över ﬂänsen 3 och O-ringstätningen 4 vid påskjutning av irmerdelen 5 på röränden 2.The connector 1 comprises a substantially tubular inner part 5, the inner diameter of which substantially corresponds to the outer diameter of the tube. At a first end, the inner part has a sealing surface 6, which is adapted to abut against the O-ring atmosphere 4. The inner part 5 also has three arms 7 arranged around the periphery, which radially resiliently protrude past the first end of the tubular inner part. The arms 7 are directed so that at its ends made, radially inwardly directed hooks 8, can pass freely over the end 3 and the O-ring seal 4 when pushing on the arm part 5 on the pipe end 2.

Kopplingsdonet 1 innefattar dessutom en väsentligen rörformig ytterdel 9, vilken från en första ände är inrättad att föras över innerdelen 5 från dess andra ände och därvid är inrättad att pressa de fjädrande armarna 7 radiellt inåt till en väsentligen axiell orientering, i vilken hakama 8 är inrättade att bringas i ingrepp bakom den radiellt utskjutande ﬂänsen 3. Vid en andra ände har innerdelen 5 en ﬂuidtät förbindelse till ett ﬂödesorgan 10 på ett 10 15 20 25 30 35 507 597 3 sådant sätt, att denna då kopplingsdonet 1 är ﬁxerat vid röränden 2 medger ett ﬂuidﬂöde genom röret via innerdelen 5 och vidare i flödesorganet 10.The connector 1 further comprises a substantially tubular outer part 9, which from a first end is arranged to be passed over the inner part 5 from its second end and is thereby arranged to press the resilient arms 7 radially inwards to a substantially axial orientation, in which the hooks 8 are arranged to be engaged behind the radially projecting ﬂ end 3. At a second end, the inner part 5 has a ﬂ tight connection to a des member 10 in a manner such that when the connector 1 is erat xerted at the pipe end 2 it allows a ﬂ uid ﬂ fate through the tube via the inner part 5 and further in the flow means 10.

Inner- och ytterdel uppvisar samverkande organ, vilka medger att dessa medelst en inbördes relativ vridningsrörelse ﬁxeras till varandra. Dessa organ innefattar åtminstone en vid innerdelens periferi utförd, i omkretsriktningen riktad klack 11, vilken är inrättad att vid vridningsrörelsen gripa in i en på ytterdelens insida komplementärt utbildad urtagning 12 (se även ﬁg 3a resp 3b) och därigenom förhindra att inner- och ytterdel bibringas inbördes axiell förskjutning. Klacken ll och urtagningen 12 har med varandra sam- verkande låsorgan, vilka genom snäpplåsning är inrättade att förhindra att klacken 11 oavsiktli gt bringas att lämna urtagningen 12. Dessa låsorgan är här utförda såsom på klacken respektive i urtagningen utförda samverkande låsklackar 13, 14.The inner and outer parts have cooperating members, which allow these to be till xered to each other by means of a mutually relative rotational movement. These means comprise at least one lug 11 formed at the periphery of the inner part, which is arranged in the circumferential direction, which is arranged to engage in a recess 12 formed on the inside of the outer part in a complementary manner (see also 3 g 3a and 3b, respectively) and thereby prevent inner and outer part from being imparted. mutual axial displacement. The lug 11 and the recess 12 have cooperating locking means, which by snap-locking are arranged to prevent the lug 11 from being inadvertently caused to leave the recess 12. These locking means are here designed as cooperating locking lugs 13, 14 made on the lug and in the recess, respectively.

Innerdelen 5 är vidare i omkretsriktning kring sin mantelyta försedd med en första vulst 15. Ytterdelen är på samma sätt i omkretsriktning kring sin inneryta försedd med en mot- svarande andra vulst 16, vilken är inrättad att då ytterdelen 9 förs över innerdelen 5 snäppa över innerdelens vulst 15 och kvarstanna bakom denna. Vid sin andra ände har ytterdelen 9 en inåtnktad ﬂäns 17, vilken begränsar hur mycket ytterdelen 9 kan påföras irmerdelen 5. Första respektive andra vulst samt flänsen 17 är samverkande inrättade att begränsa delarnas inbördes förskjutning i axiell riktning och därigenom tillse att inner- och ytterdel bibehåller sin samhörighet när de ej är ﬁxerade till varandra medelst klacken 1 1 och uxtagningen 12.The inner part 5 is further provided in the circumferential direction around its outer surface with a first bead 15. The outer part is in the same way in the circumferential direction around its inner surface provided with a corresponding second bead 16, which is arranged to snap over the inner part 5 when the outer part 9 is passed over the inner part 5. bead 15 and remain behind it. At its other end, the outer part 9 has an inwardly directed ns end 17, which limits how much the outer part 9 can be applied to the inner part 5. The first and second beads and the flange 17 are cooperatively arranged to limit the mutual displacement of the parts in axial direction and thereby ensure that inner and outer part their affiliation when they are not axed to each other by means of the lug 1 1 and the extension 12.

I ytterdelen 9 är upptaget åtminstone ett fönster 18 genom vilket en del av innerdelen 5 är inrättad att synliggöras då ﬁxering av innerdel 5 till ytterdel 9 har uppnåtts.In the outer part 9 at least one window 18 is accommodated through which a part of the inner part 5 is arranged to be made visible when the connection of inner part 5 to outer part 9 has been achieved.

I ﬁg 2a och 2b visas en alternativ utföringsfonn av ett kopplingsdon 1 vars innerdel 5 vid en andra ände har en ﬂuidtät avslutning 19, vilken är inrättad att då kopplingsdonet 1 är ﬁxerat vid röränden 2 förhindra ett ﬂuidﬂöde ut genom detta. Ytterdelen 9 är också vid sin andra ände helt försluten, eftersom i detta utförande ingen öppning för ett ﬂödesorgan krävs. I övrigt uppvisar kopplingsdonet enligt ﬁg 2a och 2b samtliga kärmetecken som kopplingsdonet enligt ﬁg la och lb.2a and 2b show an alternative embodiment of a connector 1 whose inner part 5 at a second end has a tight end 19, which is arranged so that when the connector 1 is fastened at the pipe end 2 it prevents an outflow through it. The outer part 9 is also completely closed at its other end, since in this embodiment no opening for a destiny member is required. In other respects, the connector according to ﬁ g 2a and 2b has all the core characters that the connector according to ﬁ g la and lb.

I ﬁg 3a och 3b visas genom uppbrutna vyer hur de respektive ytterdelarnas insidor är utförda vid utföringsformen enligt ﬁg la och lb respektive 2a och 2b. På ytterdelamas insidor ﬁnns den komplementärt mot innerdelens klack 11 utbildade urtagningen 12, 507 597 10 15 20 25 30 35 4 vilken vidare uppvisar den in i urtagningen 12 riktade låsklacken 14. Den på klacken 1 1 utförda låsklacken 13 är inrättad att snäppas över den i urtagningen 12 utförda låsklacken 14 då klacken 11 vid vridningsrörelsen bringas att gripa in i intagningen 12. Vid upp- hävande av ﬁxeringen mellan inner- och ytterdel måste sedan först den på klacken ll utförda låsklacken 13 bringas att snäppa över urtagningens låsklack 14 innan klacken 1 1 kan vridas ur urtagningen 12. På detta sätt förhindras att klacken l l oavsiktligt bringas att lärrma intagningen 12. Ytterdelarnas insidor är vidare utformade så, att de medger att inbördes relativ vridningsrörelse mellan inner- och ytterdel genom att urtagningar 20 med större bredd än armarna 7 är utförda på ytterdelens insida. Fönstret är placerat på den vid ytterdelens andra ände utförda inåtriktade ﬂänsen 17 och så att klacken 1 l kommer att synliggöras genom detta då ﬁxering har uppnåtts. Det är uppenbart att ett fönster kan upptas på godtyckligt ställe på ytterdelen 9 där någon del av innerdelen 5 endast kommer att synliggöras då ﬁxering uppnåtts. I ﬁg 3a visas ytterdelen 9 för den utföringsfonn där innerdelen 5 har en ﬂuidtät förbindelse till ett flödesorgan 10. Flödesorganet 10 kan då passera genom den av ﬂänsen 17 avgränsade öppningen 21. I fig 3b visas ytterdelen för den utföringsform där innerdelen 5 vid en andra ände har en fluidtät avslutning 19.Figures 3a and 3b show, through broken-down views, how the insides of the respective outer parts are made in the embodiment according to Figures 1a and 1b and 2a and 2b, respectively. On the inside of the outer parts there is the recess 12 formed complementary to the inner part 11 of the inner part 11, 507 597 10 15 20 25 30 35 4 which further has the locking lug 14 directed into the recess 12. The locking lug 13 formed on the lug 1 1 is arranged to snap over the the locking lug 14 made by the recess 12 when the lug 11 is caused to engage in the recess 12 during the turning movement. can be rotated out of the recess 12. In this way the lug 11 is prevented from being inadvertently caused to shield the recess 12. The insides of the outer parts are further designed so that they allow relative relative rotational movement between inner and outer part by recesses 20 having a width wider than the arms 7 being made on the inside of the outer part. The window is placed on the inwardly directed 17 end 17 formed at the other end of the outer part and so that the lug 11 l will be made visible by this when ering xering has been achieved. It is obvious that a window can be accommodated at any place on the outer part 9 where any part of the inner part 5 will only be visible when ﬁ xering has been achieved. Fig. 3a shows the outer part 9 of the embodiment where the inner part 5 has a tight connection to a flow member 10. The flow means 10 can then pass through the opening 21 delimited by the shaft 17. Fig. 3b shows the outer part of the embodiment where the inner part 5 at a second end has a fluid tight seal 19.

Flänsen 17 kan då vara utförd så att dess kanter sammanfaller, dvs så att ytterdelens andra ände, förutom fönstret 18, är helt försluten.The flange 17 can then be designed so that its edges coincide, ie so that the other end of the outer part, in addition to the window 18, is completely closed.

I fig 4 visas det uppfnningsenliga kopplingsdonet l enligt ﬁg la och lb med inner- och ytterdel fixerade till varandra, men för tydlighet ej ﬁxerade vid en rörände. Armarna 7 är här pressade radiellt inåt till den väsentligen axiella orienteringen, i vilken de skulle ha bringats i ingrepp bakom den radiellt riktade ﬂänsen 3 om innerdelen 5 varit påskjuten på röränden 2.Fig. 4 shows the inventive connector 1 according to Figs. 1a and 1b with inner and outer parts fixed to each other, but for clarity not axed at a pipe end. The arms 7 are here pressed radially inwards to the substantially axial orientation, in which they would have been brought into engagement behind the radially directed end 3 if the inner part 5 had been pushed onto the pipe end 2.

I ﬁg 5 visas ett delsnitt genom det uppfrnningsenliga kopplingsdonet enligt ﬁg 2a och 2b fixerat vid en rörände 2. Snittet visar hur den väsentligen rörforrniga ytterdelen 9 ﬁån en första ände förts över innerdelen 5 från dess andra ände och därvid pressar de fjädrande armarna 7 radiellt inåt till en väsentligen axiell orientering i vilken hakarna 8 har bringats i ingrepp bakom den radiellt utskjutande ﬂänsen 3. Man ser också hur en del av innerdelen 5 har synliggjorts genom ett i ytterdelen 9 upptaget fönster 18 genom att en arms bakparti vridits in framför detta.Fig. 5 shows a partial section through the inventive connector according to Figs. 2a and 2b fixed to a pipe end 2. The section shows how the substantially tubular outer part 9 from a first end is passed over the inner part 5 from its second end and thereby the resilient arms 7 press radially inwards to a substantially axial orientation in which the hooks 8 have been brought into engagement behind the radially projecting end 3. It is also seen how a part of the inner part 5 has been made visible through a window 18 accommodated in the outer part 9 by turning the rear part of an arm in front thereof.

Det är uppenbart för en fackman inom området, att uppﬁnningen ej är begränsad till de ovan beskrivna utföringsformema, utan att den istället kan genomgå modifikationer inomIt will be apparent to one skilled in the art that the invention is not limited to the embodiments described above, but may instead undergo modifications within the art.

Claims

A connector (1) for releasable mounting at a pipe end (2), which around its periphery has a radially projecting shaft (3) against which an O-ring seal (4) abuts against its pipe end. facing side, characterized in that the connector (1) comprises a substantially tubular inner part (5), the inner diameter of which substantially corresponds to the outer diameter of the tube and which at a first end has a sealing surface (6) which is adapted to abut against the ring seal (4), and that the inner part (5) has at least three arms (7) arranged around the periphery, which radially resilient project beyond the first end of the tubular inner part and are directed, so that radially inwardly directed at the ends of the arms hooks (8), can pass freely over the end (3) and the O-ring seal (4) when pushing on the inner part (5) on the pipe end (2) so that the coupling device (1) comprises a substantially tubular outer part (9), which from a first end is set to f ear over the inner part (5) from its other end and is thereby arranged to press the resilient arms (7) radially inwards to a substantially axial orientation, in which the hooks (8) are arranged to be brought into engagement behind the radially projecting ns end (3) and that the inner and outer part have cooperating means, which allow these to be fixed to each other by means of a relative relative rotational movement and that in the outer part (9) at least one window (18) is accommodated through which a part of the inner part (5) is arranged to be made visible when fixation has been achieved. Coupling device (1) according to claim 1, characterized in that said cooperating means which allow fixing of inner and outer part to each other by means of the rotating movement comprises at least one lug (1 1) formed in the circumferential direction of the inner part, which is arranged to engage in a recess (12) formed on the inside of the outer part during the rotational movement and thereby prevent the inner and outer part from being imparted with mutual axial displacement. Coupling device (1) according to claim 2, characterized in that the lug (11) and the recess (12) have cooperating locking means (13, 14) which are arranged by snap locking to prevent the lug (11) from being inadvertently caused to learn the recess (12). Connector (1) according to any one of claims 1 to 3, characterized in that the inner part (5) at a second end has a än tight connection to a ﬂ means (10) in such a way that this when the connector (1) is fixed at the pipe end (2) allows an ﬂ uid ﬂ fate through the pipe via the inner part (S) and further in the ﬂ means (10). Connector (1) according to one of Claims 1 to 3, characterized in that the inner part (5) at a second end has a non-tight end (19) arranged so that when the connector (1) is fixed at the pipe end (2) prevent a fluid ut fate out through this. Connector (1) according to one of the preceding claims, characterized in that the inner part (5) is provided with a first bead (15) in the circumferential direction around its outer surface and that the outer part is provided with a corresponding second bead in the circumferential direction around its inner surface (15). 16), which is arranged that when the outer part (9) is passed over the inner part (5) snaps over the bead of the inner part (15) and remains behind it and that the outer part (9) has at its other end an inwardly directed end (17), which limits how much the outer part (9) can be applied to the inner part (5) and that the first and second beads (15, 16) and the flange (17) cooperatively are arranged to limit the mutual displacement of the parts in the axial direction and thereby ensure that the inner and outer part maintains its belonging when they are not fixed to each other.