SE465998B

SE465998B - Arrangement for suction appliances

Info

Publication number: SE465998B
Application number: SE8903766A
Authority: SE
Inventors: Karl-Aake Karlsson
Original assignee: Karl Aake Karlsson
Priority date: 1989-11-09
Filing date: 1989-11-09
Publication date: 1991-12-02
Also published as: SE8903766D0

Abstract

The invention concerns an arrangement for suction appliances of the type having a suction unit to which it is possible to connect one end of suction hoses 7, which at their other ends have suction nozzles 1. According to the invention, each suction nozzle has a ball 2 serving as a valve body which is held pressed sealingly against the nozzle mouth by means of an elastically resilient line 4 which runs through the ball and whose end parts are fixed to opposite wall parts of the nozzle 1, 1'. The distance between the points of attachment of the line to the nozzle and the mouth of the nozzle is such that the ball, when moved aside, is located to the side of the nozzle and almost completely behind the nozzle mouth. The suction hose 7 is designed in such a way, for example in a bellows shape, that when the ball is moved to the closure position, it automatically contracts to such a degree that it does not constitute an obstruction at the workplace where suction is to take place. <IMAGE>

Description

465 998 2 10 15 20 25 30 För genomförande av dessa och andra syften är uppfinningen utformad i enlighet med efterföljande patentkrav. 465 998 2 10 15 20 25 30 For carrying out these and other objects, the invention is designed in accordance with the following claims.

På bifogade ritning visas en såsom exempel angiven utföringsform av uppfinningen jämte en modifikation därav.The accompanying drawing shows an exemplary embodiment of the invention together with a modification thereof.

Fig. 1 visar därvid den munstycksförsedda delen av en sugslang sedd från sidan och i inaktivt dvs. stängt läge under det att Fig. 2 utgör ett snitt genom samma del av sugslangen men taget 900 mot vyn enligt fig. l Fig. 3 visar samma vy som fig. 1 men med munstycket i aktivt, dvs. öppet, läge Fig. 4 slutligen utgör ej sidovy, delvis i snitt av ett något modi- fierat munstycke.Fig. 1 then shows the nozzle-provided part of a suction hose seen from the side and in inactive ie. closed mode while Fig. 2 is a section through the same part of the suction hose but taken 900 to the view of Fig. 1 Fig. 3 shows the same view as Fig. 1 but with the nozzle in active, ie. open, location Fig. 4 finally does not constitute a side view, partly in section of a somewhat modi- celebrated nozzle.

Som inledningsvis nämts omfattar anordningen en i och för sig känd centralsuganläggning, vilken på likaledes känt sätt uppvisar ett antal uttag, till vilka sugslangar kan anslutas. Dessa uttag är därvid på känt sätt så utformade, att de är stängda så länge ingen sugslang är ansluten. Detta innebär således att det ej sker någon sugning genom dessa uttag så länge ingen slang är ansluten till dem. Så fort ena änden av en sugslang ansluts igàngsätts emellertid en sugning. Varje sugslang uppvisar därför i sin ena ände en ej visad anslutningsdel, medelst vilken den ansluts till ett uttag. I sin andra ände uppvisar varje sugslang ett munstycke vilket enligt fig. l-3 utgörs av en i resp. slangände inskjuten rörformad och i sitt ändparti något konisk del l, vilken lämligen kan vara framställd av något ändamålsenligt plastmaterial såsom PVC. En kula eller boll 2, vilken lämpligen är framställd av ett eftergivande material såsom gummi eller mjukgjord plast och vilken antingen kan vara massiv eller ihålig, uppvisar ett genomgående, företrädesvis bollen diametralt genomgående, hål 3, genom vilket är förd en fjädrande elastisk sträng 4, vilken likaledes kan vara framställd av gumi eller mjukgjord plast. Denna strängs ändpartier är på sätt som framgår av fig. 2 fixerade vid delen 1 genom att vara 10 15 20 25 30 J' 465 998 förda genom härför avsedda främre och bakre hål 5 i munstycksdelens l varandra diametralt motsatta väggpartier. En tätningsmanschett 6 är krängd på den i fig. nedre och utanpå munstycksdelen l befintliga delen av strängen 4 samtidigt som den är krängd över den i fig. övre delen av den sugslang 7, i vilken munstycket är inskjutet. Som framgår av ritningen kan denna sugslang ha ett spiralformat väggparti, men den kan även ha bälgform. I Den nu beskrivna anordningens funktionssätt framgår bäst genom en jämförelse mellan fig. 1 och fig. 3. iSugs1angen är därvid i bägge fallen ansluten till ett uttag. Vid läget enligt fig. 1 ligger bollen 2 tätande antryckt mot mynningen av mun- stycksdelen 1 och det inses att någon sugning genom denna mynning därför ej äger rum. Då man önskar verkställa en ut- eller uppsugning för man endast undan bollen genom att trycka den i någon av pilrikt- ningarna i fig. l. Genom strängens 4 elasticitet kommer bollen 2 därvid att rulla ut till det i fig. 3 visade läget helt bakom mynningen där den är helt ur vägen. Avståndet mellan strängens 4 anslutning till munstycksdelen 1 och bollen överstiger nämligen bollens 2 diameter.As mentioned in the introduction, the device comprises a known per se central suction system, which in a similarly known manner has a number sockets, to which suction hoses can be connected. These sockets are then on known manner so designed that they are closed as long as there is no suction hose connected. This means that there is no suction through these sockets as long as no hose is connected to them. So fast one however, the end of a suction hose is connected, a suction is initiated. Each suction hose therefore has at its one end a connection part (not shown), by means of which it is connected to an outlet. At its other end exhibits each suction hose a nozzle which according to Fig. 1-3 consists of an i resp. hose end inserted tubular and in its end portion slightly conical Part 1, which may suitably be made of something expedient plastic materials such as PVC. A ball or ball 2, whichever is suitable made of a resilient material such as rubber or plasticized plastic and which can be either solid or hollow, exhibits one through, preferably the ball diametrically through, hole 3, through which is carried a resilient elastic string 4, which likewise can be made of rubber or plasticized plastic. The end portions of this string are fixed to the part 1 in the manner shown in Fig. 2 by being 10 15 20 25 30 J '465 998 passed through dedicated and rear holes 5 in the nozzle part diametrically opposite wall portions. A sealing sleeve 6 is tilted on the existing one in Fig. lower and on the outside of the nozzle part 1 the part of the string 4 at the same time as it is tilted over it in fig. upper part of the suction hose 7, into which the nozzle is inserted. As As can be seen from the drawing, this suction hose can have a helical wall portion, but it can also have a bellows shape. IN The mode of operation of the device now described is best illustrated by a comparison between Fig. 1 and Fig. 3. In both cases, the suction plug is connected to an outlet. At the location according to Fig. 1, the ball 2 is sealingly pressed against the mouth of the mouth. piece 1 and it is realized that some suction through this mouth therefore does not take place. When you want to perform a suction or suction to move the ball only by pushing it in one of the arrow directions Due to the elasticity of the string 4, the ball 2 then comes into contact with it to roll out to the position shown in Fig. 3 completely behind the mouth there it's completely out of the way. The distance between the connection of the string 4 to namely the nozzle part 1 and the ball exceed the diameter of the ball 2.

Ut- eller uppsugning kan därför ske helt obehindrat. Då man önskar av- bryta sugningen för man endast bollen mot verkan av den av den fjäd- rande strängen utövade fjäderverkan tillbaka till läget enligt fig. 1 och sugningen avbryts därvid omedelbart. I Det inses att man därigenom dels blir befriad från arbetet att efter varje sugoperation losskoppla slangen från dess uttag och dels hela tiden har kontroll över sugningen eftersom man hela tiden kan hålla i munstycket eller den munstycket närbelägna delen av slangen..Extraction or suction can therefore take place completely unhindered. When you wish to break the suction for the ball only against the action of that of the spring the spring string exerted a spring action back to the position according to Fig. 1 and the suction is then stopped immediately. IN It is realized that one thereby is partly freed from the work that follows each suction operation disconnect the hose from its socket and partly the whole time has control over the suction because you can hold all the time in the nozzle or the nozzle adjacent part of the hose ..

Genom att välja slangens spiral- eller bälgform på sâdant_sätt, att ett visst-vakuum ger en viss förkortning av sugslangen ernás dessutom den väsentliga fördelen att man kan arrangera sugslangarna hängande ned över en arbetsplats så att munstyckena då de är stängda kommer att befinna sig på en sådan höjd att de ej är till hinders samtidigt 465 998 4 10 15 20 25 30 som de är lätt åtkomliga. Så snart ett munstycke öppnas genom att bollen 2 skjuts bort från sitt mot munstycksdelens mynning tätande läge kommer emellertid vacuet i sugslangen att upphöra, vilket medför en förlängning av slangen, vilken därigenom snabbt och lätt kan föras till önskat ställe. Så snart munstycket efter verkställd sug- ning ånyo stängs förkortas slangen och intar därigenom automatiskt ett beredskapsläge på lämplig höjd.By choosing the spiral or bellows shape of the hose in this way, that a certain vacuum also gives a certain shortening of the suction hose ernás the essential advantage that you can arrange the suction hoses hanging down over a workplace so that the nozzles when they are closed come to be at such a height that they are not obstructive at the same time 465 998 4 10 15 20 25 30 as they are easily accessible. As soon as a nozzle is opened by the ball 2 is pushed away from its sealing against the mouth of the nozzle part position, however, the vacuum in the suction hose will cease, which causes an extension of the hose, which thereby can quickly and easily taken to the desired place. As soon as the nozzle after the suction is When closed again, the hose is shortened and thus takes over automatically a standby position at a suitable height.

Den i fig. 4 visade modifikationen av munstycket skiljer sig från det nyss beskrivna därigenom att vid munstycksdelen 1' är anordnat ett fäste 8 i form av en vid munstycksdelen 1” genom fastpressning och/eller limning fäst plastdetalj med ett rörformigt flänsparti 9 samt diametralt motsatta slitsar 10 genom vilka strängen är förd.The modification of the nozzle shown in Fig. 4 differs from it has just been described in that it is arranged at the nozzle part 1 ' a bracket 8 in the form of one at the nozzle part 1 ”by pressing and / or gluing plastic part with a tubular flange portion 9 and diametrically opposite slots 10 through which the strand is passed.

Strängen 4 uppvisar härvid i sina ändar lämpligen kulformade för- tjockningar ll, vilka ej kan passera genom slitsarna, varigenom strängens 4 ändar blir fixerade. Vid detta utförande kan tätnings- manschetten' undvaras.The string 4 here has at its ends suitably spherical thicknesses ll, which can not pass through the slots, whereby the 4 ends of the string are fixed. In this embodiment, the sealing the cuffs' are dispensed with.

Den nu beskrivna anordningen kan givetvis varieras på ett flertal sätt inom ramen för patentkraven. Det inses t.ex. att ventilorganet 2 ej behöver vara utformat som en boll utan kan ha varje annan lämplig form. Fjäderelementen 4 behöver ej heller bestå av en fjädrande sträng men en sådan utforming är att föredra.The device now described can of course be varied on a plurality within the scope of the claims. It is realized e.g. that the valve means 2 need not be shaped like a ball but may have each other suitable form. The spring elements 4 also do not have to consist of a resilient string but such a design is preferable.

Sugslangarna kan vardera bestå av två längder och en mellan dessa an- ordnad bälgformad del, varvid denna bälgformade del har en längd och utformning som ger den i varje enskilt fall önskade kontraktionen av sugslangen vid anlagt vacuum. Det blir på sådant sätt möjligt att "skräddarsy" slangar efter varje aktuellt behov. Strängens infästning vid munstycksdelen kan likaså varieras på ett flertal sätt. Istället för att vid utförandet enligt fig. 4 använda sig av en sträng med kul- förmiga ändpartier kan man t.ex. utforma ändpartierna som öglor, vilka kan hakas i krokformiga delar hos fästet 8.The suction hoses can each consist of two lengths and one between these arranged bellows-shaped part, this bellows-shaped part having a length and design that provides the desired contraction of in each individual case suction hose at applied vacuum. In this way it becomes possible to "tailor" hoses to each current need. Fastening the string at the nozzle part can also be varied in a number of ways. Instead for using in the embodiment according to Fig. 4 a string with ball shaped end portions, one can e.g. design the end portions as loops, which can be hooked into hook-shaped parts of the bracket 8.

Claims

5,465,998 PATENT CLAIMS:

Device in such suction systems which comprise a suction device, to which one or more suction nozzles (7) provided with suction nozzles (1) are connected and in which each suction nozzle (1) has a valve means (2), which from a normal position, the closing position, in which it prevents suction through the nozzle, can be brought to a position, the opening position, in which suction can take place through the nozzle in question, characterized in that the valve means consists of a ball made preferably of elastic material ( 2), which has a diameter exceeding the diameter of the nozzle orifice and that said ball through resilient means (4) connected to the ball (2) and the nozzle (1,1 ') can be kept resiliently and sealingly pressed against the nozzle orifice, and said spring means to the nozzle part is arranged at such a distance from the nozzle orifice that the ball, after being manually removed from contact with the nozzle orifice by said resilient means (4) will be moved to a position in which it is held in abutment against the nozzle part with substantially the entire ball located axially behind the nozzle orifice.

Device according to claim 1, characterized in that the resilient members consist of elastic strands (4) or string parts.

Device according to claim 1, characterized in that the resilient means consist of parts of a ball (2) diametrically continuous string (4), the parts of which are fixed to the nozzle part (1) by being threaded through in the diametrically opposite wall portions occupied, axially successively located holes (5).

Device according to claim 3, characterized in that a sealing sleeve (6) is passed partly over the rear of said holes and the string parts extending backwards from said holes and partly over the hose end (7) in which the nozzle part (1 ) is introduced.

Device according to claim 1, characterized in that the resilient means consist of an elastic string 465 998 é (4), which passes through the ball (2) and which at its ends has fastening loops, thickenings (11) and the like. which are connectable to hooks, slit pockets (9,10) ed of a bracket attached to the nozzle part (1 ') or integrated therein (8).

Device according to claim 5, characterized in that the bracket (8) consists of a nozzle enclosing, substantially circular disc, provided with an upwardly directed outer flange portion (9) and having two diametrically opposite slots (10), through which the string (4) but not its thickened end portions (11) can pass.

Device according to claim 1, wherein the suction hose (7) is of the type which is wholly or partly so designed, e.g. by spiral or bellows shape, that when exerted on it by a certain axial tensile force it will expand, characterized in that said spiral or bellows shape and the elasticity and wall thickness of the hose material are selected in such a way that the hose during construction of the vacuum, i.e. when the valve means is moved to the normal position, will decrease so much in length that its nozzle from being in a position adjacent to the intended suction location, e.g. a workbench, will be moved to a position in which it is at such a distance from it that it is not obstructed but at the same time easily accessible.