DK145530B

DK145530B - Solder WEEKS

Info

Publication number: DK145530B
Application number: DK67971AA
Authority: DK
Inventors: W S Fortune
Original assignee: Fortune William S
Priority date: 1970-02-16
Filing date: 1971-02-15
Publication date: 1982-12-06
Also published as: JPS4924785B1; CA925376A; DK145530C; US3604610A; DE2106982C2; GB1310148A; DE2106982A1

Description

1 145530 o1 145530 d

Opfindelsen angår en loddemiddelsuger af den i krav l's indledning angivne art.BACKGROUND OF THE INVENTION This invention relates to a solder vacuum cleaner of the kind set forth in claim 1.

Loddemiddelsugere af denne art kendes blandt andet fra US-patentskrift nr. 3.393.854. I de således kendte lodde-5 middelsugere vender den ende af udløserarmen, der er indrettet til at påvirkes manuelt med henblik på at igangsætte sugningen, bort fra sugedysen, hvilket medfører, at når man - som normalt -holder sugeren med den ene hånd med en finger i beredsskab til at påvirke udløserarmen, vil man holde om sugeren på et sted, 1Q der ligger forholdsvis langt fra sugedysen. Dette er uhensigtsmæssigt med henblik på en god styring af sugedysen, da denne skal kunne holdes med ret god præcision i nærheden af det lodde-sted, hvorfra der skal fjernes loddemiddel.Solder vacuum cleaners of this kind are known, inter alia, from US Patent No. 3,393,854. In the so-called solder vacuum cleaners, the end of the trigger arm, which is adapted to be actuated manually to initiate the suction, turns away from the suction nozzle, which means that when - as usual - the suction is held with one hand with a finger in readiness to actuate the trigger arm, one will hold the suction in a location 1Q that is relatively far from the suction nozzle. This is inappropriate for good control of the suction nozzle, since it must be able to be held with fairly good precision near the soldering point from which solder must be removed.

Loddemiddelsugeren ifølge opfindelsen er ejendommelig ved den i krav l's kendetegnende del angivne udformning. Herved opnås, at udløserarmen vender i den modsatte retning af, hvad der er tilfældet v.ed de tidligere kendte sugere, og det bliver således muligt at anbringe den del af udløserarmen, som betjenes manuelt, så tæt op ad sugedysen som man ønsker. Herved op-2Q nås en væsentligt forbedret mulighed for præcis styring af sugedysen.The solder vacuum cleaner according to the invention is peculiar to the design according to the characterizing part of claim 1. In this way, the release arm is turned in the opposite direction to that of the prior art suckers and thus it is possible to position the manually operated part of the release arm as close to the suction nozzle as desired. This provides a significantly improved opportunity for precise control of the suction nozzle.

Dersom loddemiddelsugeren er af den art, der er angivet i krav 2's indledning, kan de i krav l's kendetegnende del angivne træk ved at suppleres med de i;krav 2's kendetegnende del angivne træk, udnyttes til at opnå en mulighed til at ud-25 drive sugedysen af cylinderen ved hjælp af udløserarmen, som i dette tilfælde bevæges i den modsatte retning af den normale udløseretning. Det skal i denne sammenhæng erindres, at sugedyser i sugere af denne art kan være ret små og svære at gribe med fingrene eller værktøj, hvorfor denne mulighed til at drive dem ud ved tryk indefra vil være særdeles nyttig.If the solder vacuum cleaner is of the kind specified in the preamble of claim 2, the features specified in the characterizing part of claim 1, by supplementing the features specified in the characterizing part of claim 2, can be utilized to provide an opportunity to perform the suction nozzle of the cylinder by means of the release lever, which in this case is moved in the opposite direction of the normal release direction. In this context, it should be remembered that suction nozzles in suckers of this kind can be quite small and difficult to grasp with the fingers or tools, which is why this ability to drive them out from the inside will be particularly useful.

Ved den i krav 3 angivne udformning opnås, at stemplet kan fjernes i bagudgående retning, f.eks. med henblik på vedligehold, smøring eller udskiftning.In the embodiment of claim 3, it is achieved that the piston can be removed in the backward direction, e.g. for maintenance, lubrication or replacement.

Ved den i krav 4 angivne udformning opnås, at det 35 ikke er nødvendigt at forlænge stemplet yderligere i bagudgående 2 145530 o retning med en spændestang til spænding af sugefjederen, idet spændingen kan udføres ved hjælp af fingergrebet, som rager ud gennem slidsen i cylinderen, og ved den i krav 5 angivne udformning opnås yderligere, at stemplet ikke forhindres af g fingergrebet i - at blive taget ud i bagudgående retning.In the configuration of claim 4, it is achieved that it is not necessary to extend the piston further in the backward direction with a tensioning rod for tensioning the suction spring, the tensioning being carried out by the finger grip projecting through the slot in the cylinder. and in the configuration of claim 5, it is further achieved that the plunger is not prevented by the g finger grip in - being taken out in the backward direction.

Ved den i krav 6 angivne udformning med en drejelig stop-bøsning opnås, at loddemiddelsugeren til enhver tid kan indstilles således, at kun de funktioner, som man ønsker at udføre, kan udføres, mens der er spærret for de øvrige funktio-ner. Dette kan hensigtsmæssigt opnås ved den i krav 7 og/eller 8 angivne udformning.By the design of claim 6 with a rotatable stop bush, it is achieved that the solder vacuum cleaner can be adjusted at any time so that only the functions which one wishes to perform can be performed while the other functions are locked. This may conveniently be achieved by the design of claims 7 and / or 8.

Opfindelsen skal i det følgende forklares nærmere under henvisning til tegningen, på hvilken fig. 1 i perspektiv viser en udførelsesform for en loddemiddelsuger ifølge opfindelsen i uspændt tilstand, 15 fig. 2 et længdesnit gennem den i fig. 1 viste loddemidde1suger, fig. 3 et længdesnit af den i fig. 1 viste lodde-middélsuger i en stilling med udskudt mundstykke, fig. 4 delvis i snit loddemiddelsugeren i en stilling med udløst stempel, fig. 5 i perspektiv loddemiddelsugerens bageste dækselelementdel, fig. 6 et væsentligt tværsnit, der viser visse 2^ operationsmæssige sider af loddemiddelsugeren, og fig. 7, 8 og 9 udførelsesformer for loddemiddelsugeren ifølge opfindelsen med vigtige alternative konstruktive træk.The invention will now be explained in more detail with reference to the drawing, in which: 1 is a perspective view of one embodiment of a solder vacuum cleaner according to the invention in an unstressed state; FIG. 2 is a longitudinal section through the embodiment of FIG. 1 solder suction; FIG. 3 is a longitudinal sectional view of the embodiment of FIG. 1 solder vacuum cleaner shown in a position with extended nozzle; FIG. 4 is a partial sectional view of the solder vacuum in a position with the triggered piston; FIG. 5 is a perspective view of the rear cover element portion of the solder vacuum cleaner; FIG. 6 is a substantial cross-sectional view showing certain 2 ~ operative sides of the solder vacuum cleaner; and FIG. 7, 8 and 9 are embodiments of the solder vacuum cleaner according to the invention with important alternative constructive features.

I fig. 1 omfatter loddemiddelsugeren 10 en i ho-^ vedsagen cirkulærcylindrisk cylinder 12, en forreste spids 14 og et stempel 16, der begge hovedsageligt bæres udtageligt i cylinderen, en udløserarm 18, der er vippeligt lejret uden på cylinderen ved indgreb af et par bæretappe 20, og et stop 22, der er drejeligt lejret på cylinderen ^ ved indgreb med en til højre i tegningen vist, perifer holderrille 24, der er udformet i nærheden af cylinderens bageste ende.In FIG. 1, the solder vacuum cleaner 10 comprises a generally circular cylindrical cylinder 12, a front tip 14 and a plunger 16, both of which are substantially removably carried in the cylinder, a release lever 18 which is tiltably mounted on the cylinder by the engagement of a pair of supporting pins 20; and a stop 22 pivotally mounted on the cylinder 1 by engagement with a peripheral holder groove 24 shown in the drawing, formed near the rear end of the cylinder.

0 3 145530 I fig. 2 ses cylinderen 12 at bestå af et i ét stykke støbt formstoflegeme, der har en konstant indre diameter i den største del af en længde fra sin åbne bageste ende 26 til et fjederholdende bryst 28 i nærheden ® af dets forreste ende, idet brystet 28 er dannet af o-vergangen fra den største del 29 med større diameter til en mundstykkeholdende del 30 med formindsket diameter. Cylinderen 12's yderligere vigtige konstruktive trask omfatter: Holderillen 24 og en radialt indad til-10 spidset, endehætteoptagende del 32, der straskker sig fra holderillen 24 bagud til enden 26 af cylinderen, en stempelspasndingsadgangsslids 34, der strækker sig fra en forreste ende 36 til og igennem den yderste bageste ende 26 af cylinderen 12, en udløserarmmodtagende slids 38, 15 og et fingergrebformet stykke 40 med reduceret diameter udformet stødende op til den forreste ende 42 af cylinderen 12. Udløserarmen 18 er også i denne udførelsesform en i et stykke støbt formstofdel og omfatter en stem-pelindgribende armdel 44, i hvilken der er udformet en 20 skulder 46, der ligger an imod en stophætte, og som strækker sig i hovedsagen bagud og indad fra slidsen 48, jfr. fig. 3, der danner et vippeleje i indgreb med en bæretap 20. Udløserarmen 18's kropdel 60 strækker sig fremad og i hovedsagen parallelt med cylinderen 12 således, 25 at den forreste spidsdel er aksialt anbragt stødende op til denne og således, at den i samvirke med en ydre formet del 40 med reduceret ydre diameter af cylinderen 12 kan betjenes med en fingerspids. Symmetrisk anbragt på hver side af kropdelen 50 findes et par skørtdele 54, 30 der afstiver den letvægtsstøbte arm, og som er bueformede for ved deres bageste, over cylinderen skrævende ende at indeholde bæreslidsen 48 til holdende indgreb med cylinderen 12's bæretappe 20.In FIG. 2, the cylinder 12 is seen to consist of a one-piece molded body having a constant internal diameter for the greater part of a length from its open rear end 26 to a spring-holding chest 28 in the vicinity of its front end, the chest 28 being formed by the o-transition from the larger portion 29 of larger diameter to a nozzle holding portion 30 of reduced diameter. The further important structural features of the cylinder 12 include: The retainer groove 24 and a radially inwardly pointed, end cap receiving portion 32 extending from the backing groove 24 rearwardly to the end 26 of the cylinder, a piston tension access slot 34 extending from a front end 36 to and through the outer rear end 26 of cylinder 12, a release arm receiving slot 38, 15 and a reduced diameter finger grip shaped 40 adjacent to the front end 42 of cylinder 12. Also, in this embodiment, the release arm 18 is a molded mold part and comprises a piston engaging arm portion 44 in which a shoulder 46 is formed which abuts a stop cap and extends substantially backwards and inwards from the slot 48, cf. FIG. 3, which forms a rocker bearing in engagement with a supporting pin 20. The body portion 60 of the trigger arm 18 extends forwardly and substantially parallel to the cylinder 12 such that the front tip portion is axially disposed adjacent to it and so as to cooperate with a outer shaped portion 40 with reduced outer diameter of cylinder 12 can be operated with a fingertip. Symmetrically disposed on each side of the body portion 50 are a pair of skirt portions 54, 30 which support the lightweight cast arm and which are arcuate at their rearwardly projecting end over the cylinder to contain the carrier slot 48 for firmly engaging the carrier pin 20 of the cylinder 12.

En lille udløserfjeder 56 er holdt sammentryk-35 ket omkring en indadrettet bæretap 58, der er støbt sammen med den nedre overflade af udløserarmen 18's kropdel 50. Fjederen 56 tjener for det første til at holde en stil- 0 4 145530 ling for stempelindgrebsarmen 44, hvorved spænding af stemplet tillades, og når det først er spændt, holdes stemplet i sin forreste, spændte stilling, og for det andet at tillade et sugelagfrembringende tilbageløb af 5 stemplet, når den forreste spidsdel 52 på udløserarmen 18 trykkes indad af operatørens fingerspids imod cylinderen 12's formede del 40. Ved denne udløseoperation sker der en lille sammentrykning af udløserfjederen 56 mellem den nederste side af udløserarmen 18's kropdel 10 50 og cylinderen 12.A small release spring 56 is held compressed around an inwardly supporting pin 58 molded together with the lower surface of the trigger portion 18 of the trigger arm 18. The spring 56 first serves to hold a position for the piston engaging arm 44. thereby allowing tension of the plunger and once it is tensioned, the plunger is held in its anterior, tensioned position, and secondly to permit a suction layer-producing return of the plunger when the forward tip portion 52 of the trigger arm 18 is pressed inward by the operator's fingertip against the cylinder. Shaped portion 40 of this release operation. During this release operation, a small compression of the release spring 56 occurs between the lower side of the body portion 10 50 of the trigger arm 18 and the cylinder 12.

Den forreste spids 14 kan på lignende måde være fremstillet ved formstofstøbning med en central boring 60, der strækker sig aksialt gennem dens fremadragende mundingsdel 62 med lille diameter. Spidsen omfatter en 15 bageste og forreste cylindrisk overflade 64, 66, som er aksialt adskilte ved hjælp af en midterdel 68 med reduceret diameter, til indgreb med cylinderen. Et forreste holdebryst er dannet, hvor overfladen 66 forbinder en forreste del 70 med en større diameter, som pas- 20 ser til og afslutter cylinderen 12's formede del 40.The anterior tip 14 may similarly be made by mold casting with a central bore 60 extending axially through its small diameter projecting mouth portion 62. The tip comprises a rear and anterior cylindrical surface 64, 66 which are axially spaced by a reduced diameter center portion 68 for engagement with the cylinder. An anterior holding breast is formed where the surface 66 joins a front portion 70 of a larger diameter which fits and terminates the shaped portion 40 of the cylinder 12.

I fig. 3 ses det klart, at når spidsen presses et kort stykke fremad under frigørelse af overfladen 66, der griber ind i cylinderen, tillader delen 68 med formindsket diameter operatøren at fjerne spidsen res-25 ten af vejen ved at svinge den sideværts, medens han/-hun trækker det fremad med sine fingerspidser.In FIG. 3, it is clearly seen that when the tip is pressed a short distance forward during release of the surface 66 engaging the cylinder, the reduced diameter portion 68 allows the operator to remove the tip the remainder of the road by pivoting it sideways while -She pulls it forward with her fingertips.

For at fuldende beskrivelsen af fig. 2 ses stemplet 16, der også er formstofstøbt ud i ét stykke, at omfatte en cylindrisk kropdel 72, der har en stempelring-30 holdende rille 74, der er udformet med en tilspidset bagud konvergerende overflade, hvorved en O-ring 76, der holdes fanget, i hovedsagen er fri under stemplets bevægelse fremad eller tilspænding, men i tæt, glidende, forseglende forhold til cylinderen 12, når det bevæger 35 sig tilbage under tilbageløbssugeslaget. Udformet foran 0 5 145530 på sterape1kropdelen 72 findes en del 78 med reduceret tværsnit, om hvilken den bageste endedel af hovedfjederen 80, der holdes aksialt sammentrykket mellem stemplet 16's kropdel 72 med større diameter og det fjeder-5 holdende bryst 28 ved cylinderen 12's forreste ende, i det ringformede mellemrum mellem delen 78 og den indre cylindriske overflade af cylinderen 12's del 29. I praksis er delen 78 med reduceret diameter i hovedsagen støbt med korsformet tværsnit, idet det tilbageløbsrekyl, som 10 cylinderen er genstand for under sugeslaget, derved reduceres betydeligt. En mundstykkeboringsrensestang 82 strækker sig fremad fra midten af delen 78 med reduceret tværsnit og renser automatisk mundstykkeboringen for fremmedlegemer ved hvert af stemplet 16's tilspændings-15 slag.To complete the description of FIG. 2, the plunger 16, also molded in one piece, is seen to comprise a cylindrical body portion 72 having a piston ring-holding groove 74 formed with a tapered rearward converging surface, thereby holding an O-ring 76 trapped, is substantially free during forward movement or tightening of the piston, but in close, sliding, sealing relationship with the cylinder 12 as it moves back during the reflux suction stroke. Shaped in front of 0 5 145530 on sterile body portion 72 is a reduced cross section portion 78 about which the rear end portion of the main spring 80 is axially compressed between the larger diameter body portion 72 of the plunger 16 and the spring-holding chest 28 at the forward end of the cylinder 12 , in the annular space between the portion 78 and the inner cylindrical surface of the portion 29. Of the cylinder 12, in practice, the reduced diameter portion 78 is generally cast with a cruciform cross section, the reflux recirculated by the cylinder during the suction stroke being substantially reduced. . A nozzle bore cleaning rod 82 extends forwardly from the center of the reduced cross section 78 and automatically cleans the foreign body nozzle bore at each of the piston 15's tapping stroke.

En spændestangdel 84 fra stemplet 16 strækker sig bagud fra dettes kropdel 72 og er afsluttet med et endeelement 86, der omfatter en fingerbetjent spændefa-ne 88, der rager ud til siden. Også stangen 84's 20 radialt udragende midterdel kan støbes i en skeletagtig korsform til opnåelse af stivhed med mindst mulig masse.A clamping rod portion 84 of the piston 16 extends rearwardly from its body portion 72 and is terminated by an end member 86 comprising a finger-operated clamping member 88 projecting to the side. Also, the radially projecting center portion of the rod 84 20 can be molded in a skeleton-like cruciform to provide stiffness with the least possible mass.

I fig. 3 er loddemiddelsugeren 10 vist i spidsfjernelsesstilling. Ved at svinge udløserarmen 18 bort fra cylinderen 12 berører armen 44's lejeende 90 enden 25 86 af stemplet 16 og presser det fremad som vist, Den forreste ende af stemplets del 78 med formindsket tværsnit ligger atter an imod den bageste flade af spidsen 14 og forskyder denne tilstrækkeligt fremad, hvorved dens forreste, cylinderindgribende overflade 66 fjernes fra 30 cylinderen 12. Den kan derefter gribes udvendigt ved hjælp af operatørens fingerspidser og yderligere fjernes med henblik på erstatning med et nyt eller anderledes formet mundstykke, eller rensning eller smøring af det indre af cylinderen.In FIG. 3, the solder vacuum 10 is shown in the tip removal position. By swinging the trigger arm 18 away from the cylinder 12, the bearing end 90 of the arm 44 contacts the end 25 86 of the piston 16 and pushes it forward as shown. The front end of the diminished cross section portion 78 is again in contact with the rear face of the tip 14 and displaces it. sufficiently forward, thereby removing its front, cylinder engaging surface 66 from cylinder 12. It can then be externally gripped by the operator's fingertips and further removed for replacement with a new or differently shaped mouthpiece, or cleaning or lubricating the interior of the cylinder. .

35 Ved den netop beskrevne vægtarmsbevægelse af ud løserarmen 18 ses skørtdelene 54's slidser 48's sving- 0 6 145530 bare indgreb med cylinderen 12's bæretappe 20 og er angivet ved bevægelsespilen 92. Det bemærkes, at når udløserarmen 18 således løftes bort fra cylinderen 12, fastholdes udløserfjederen 56, fig. 2, på tappen 58 og fø-5 res dermed bort fra sin normale berøring med cylinderens ydre overflade. I den viste udførelsesform er den lille fjeder aldrig udsat for træk, og i nogle udførelsesformer er den et enkelt bladelement, der er støbt ud i et med udløserarmens krop.35 In the just described arm movement of the release arm 18, the pivot 48 of the skirt portions 54 can be seen to engage the support pin 20 of the cylinder 12 and is indicated by the movement arrow 92. It is noted that when the release arm 18 is thus lifted away from the cylinder 12, the release spring is retained. 56, FIG. 2, on the pin 58, thereby being removed from its normal contact with the outer surface of the cylinder. In the embodiment shown, the small spring is never subjected to pull, and in some embodiments it is a single blade element molded integrally with the release arm body.

10 I fig. 4 er der vist en opbygning af elementer ne, hvor stemplet 16 er vist trukket aksialt tilbage fra sit ophold i cylinderen 12 ved at føre stemplets endeelement 86's spændefane 88 bagud langs tilspændingsad- gangsslidsen 34 og ud over cylinderens bageste ende 26.10 In FIG. 4, there is shown a structure of the elements in which the piston 16 is shown to be axially withdrawn from its residence in the cylinder 12 by passing the clamping tab 88 of the piston end member 86 backwards along the feed access slot 34 and beyond the rear end 26 of the cylinder.

1515

En sådan fjernelse udføres, når man ønsker det, for at efterse hovedfjederen 80, ved rensning af cylinderen, eller udskiftning eller rensning af O-ringen 76.Such removal is, when desired, performed to check the main spring 80, by cleaning the cylinder, or replacing or cleaning the O-ring 76.

I fig. 5 er stoppet 22, der styrer udløserarmen 18's virkemåde og fjernelsen eller samlingen af stemp- 20 let 16, vist adskilt fra den resterende del af værktøjet. Stoppet har en form, som det var skåret ud af et i hovedsagen tyndvægget, hult cylinderlegeme 93 med en slids 34' fjernet i sin fulde længde og en anden større del fjernet til dannelse af et holde- eller stempel-25 stopbryst 94. Desuden er der dannet en fremadragende udløserarms topf ane 96. Dannet langs den bageste omkreds findes en indadrettet holdekravedel 24', der er af en sådan art, at den drejeligt fastholdende griber ind i den ringformede rille 24 i cylinderen 12. På lignende måde 30 er der i den bageste del af stoppet 22 udformet et fremspring 100 til indgreb med en spærhage 100', der er udformet på cylinderen 12.In FIG. 5, the stop 22 controlling the operation of the trigger arm 18 and the removal or assembly of the piston 20 are shown separate from the remaining part of the tool. The stopper has a shape as it was cut from a generally thin walled hollow cylinder body 93 with a slot 34 'removed to its full length and another major portion removed to form a holding or piston 25 stop chest 94. In addition, forming a protruding release arm top 96. Formed along the rear circumference is an inwardly directed retaining member 24 'which is of such a nature that it pivotally engages the annular groove 24 of cylinder 12. Similarly, the rear portion of the stop 22 provides a projection 100 for engagement with a catch 100 'formed on the cylinder 12.

Stoppet 22 kan fremstilles af metal, men har i praksis været støbt af formstof. Ved samling af loddemid-35 delsugeren 10 kan stoppet 22 påføres på vilkårligt tidspunkt ved at skubbe det bagfra og presse holdekraven 24' over den tilspidsede endedel 32 af cylinderen, indtil den smækker ind i holderillen 24. Stoppet kan derefter 0 7 145530 drejes til en stilling, der tillader indføring af stemplet 16 gennem slidsen 341. Når først stemplet er bragt på plads, kan stoppet 22 drejes til sådan en stilling, at det bageste af slidsen 34 i cylinderen er blokeret 5 at stempelstopbrystet 94.The stopper 22 may be made of metal, but has in practice been molded of plastic. By assembling the solder vacuum cleaner 10, the stop 22 can be applied at any time by pushing it from behind and pressing the retainer collar 24 'over the tapered end portion 32 of the cylinder until it snaps into the retainer groove 24. The stop can then be turned to a position permitting insertion of the plunger 16 through the slot 341. Once the plunger is inserted, the stop 22 can be turned to such a position that the rear of the slot 34 in the cylinder is blocked 5 by the piston stop chest 94.

Der henvises nu til fig. 6. Under normal betjening af loddemiddelsugeren er spærhageparret 100, 100' 1 indgreb og holder derved stoppet 22 i den i fig. 1 og 2 viste drejestilling. Når man ønsker at presse stemp-10 let 16 fremad med udløserarmen 18 for at skyde spidsen 14 frem, drejes stoppet 22 i overensstemmelse med den bevægelse, der fjerner indgrebet mellem spærhageparret 100, 100', og indtil udløserarmstopfanen 96 er anbragt imod stoppet 102 på siden af cylinderen 12 i fig. 3. Denne 15 stilling får stempelstopbrystet 94 til at forblive som et stop tværs over stempeladgangsslidsen 34. Når man ønsker at åbne slidsen 34, fig. 4, drejes stoppet 22 i modsat retning ifølge bevægelsespilen 103, indtil udløserarmstopfanen 96 er i berøring med stoppet 104, 20 der er udformet på den modsatte side af cylinderen 12.Referring now to FIG. 6. During normal operation of the solder vacuum, the pawl pair 100, 100 '1 engages and thereby holds the stop 22 in the embodiment shown in FIG. 1 and 2. When it is desired to push the piston 10 lightly forward with the trigger arm 18 to push the tip 14 forward, the stop 22 is rotated in accordance with the movement which removes the engagement between the pawl pair 100, 100 'and until the trigger arm stop tab 96 is positioned against the stop 102 on the side of cylinder 12 of FIG. 3. This position causes piston stop chest 94 to remain as a stop across piston access slot 34. When opening slot 34, FIG. 4, the stop 22 is rotated in the opposite direction according to the movement arrow 103 until the trigger arm stop tab 96 is in contact with the stop 104, 20 formed on the opposite side of the cylinder 12.

I normal arbejdsstilling er spærhageparret 100, 100' i indgreb, stemplet er spændt, og mundstykkeboringen er renset ved at spændefanen 88 er presset helt frem forbi udløserarmdelen 44, der ved enden 861 s bevægelse 25 fremad presses udad imod udløserfjederen 56's kraft, indtil enden 86 er forbi udløserarmen 44, hvorefter udløserfjederen 56 får armen 44 til at vende tilbage indad bagved enden 86 og holde stemplet 16 fremme imod den sammentrykkede hovedfjeder i en spændt stilling. Mund-30 stykkespidsen kan derpå anbringes stødende op til det materiale, f.eks. smeltet loddemateriale, der skal fjernes, og udløserarmen 18's spids 52 presses indad for at bevirke stempeltilbageløbet og det ønskede sugelag. For at danne stødpude for stemplets tilbageløb, er 35 der anbragt en støddæmpende gummistødpude 106 mellem de dele af spændefanen 88 og stempelstopbrystet 94, der ellers ville berøre hinanden.In normal working position, the pawl pair 100, 100 'engages, the piston is tensioned, and the nozzle bore is cleaned by the clamping tab 88 being pushed all the way past the release arm portion 44 which, at the movement of the end 861, 25 is pressed outwardly against the force of the trigger spring 56 until the end 86 is past the trigger arm 44, after which the trigger spring 56 causes the arm 44 to return inwardly behind the end 86 and hold the piston 16 forward against the compressed main spring in a tensioned position. The mouthpiece tip may then be placed adjacent to the material, e.g. molten solder to be removed and the tip 52 of the trigger arm 18 is pressed inward to effect the piston backflow and the desired suction layer. In order to form a cushion for the return of the piston, a cushioning rubber cushion 106 is disposed between the portions of the clamping tab 88 and the piston stop chest 94 which would otherwise touch each other.

δ 145530 ο I fig. 7 og 8 ses det, at gummistødpuden om ønsket kan have form af en O-ring 106, der holdes sammentrykket i den perifere holderille 24. I denne sidste udformning er hele stoppet 22 ifølge de tidligere figurer 5 udeladt fra samlingen. Det skal også bemærkes, at O-ringen 106 ved en sådan indretning tjener til at tilføje en ønsket grad af perifer understøtning af cylinderen 12's ellers delte endedele.δ 145530 ο In fig. 7 and 8, it is seen that the rubber cushion may, if desired, be in the form of an O-ring 106 which is held compressed in the peripheral support groove 24. In this last embodiment, the entire stop 22 of the previous figures 5 is omitted from the assembly. It should also be noted that in such a device, the O-ring 106 serves to add a desired degree of peripheral support to the otherwise shared end portions of the cylinder 12.

I fig. 7 og 8 er der også vist en udskæring ved 108 i stemplet 16's kropdel. Udskæringen skaber radial frigang for udløserarmen 18*s støttende spidsendedel 90.In FIG. 7 and 8, a cutout is also shown at 108 in the body portion of the piston 16. The cutout creates radial clearance for the trigger arm 18 * s supporting tip end 90.

Når loddemiddelsugeren lagres i udstrakte tidsperioder, og når udløserfjederen 56' har form som et blad, der er støbt ud i ét med udløserarmens krop, udelukker frigan-15 gen enhver uelastisk deformation af bladfjederen som følge af langtidsvirkningen af bøjningsspænding på det plastiske materiale.When the solder suction is stored for extended periods of time and when the trigger spring 56 'is in the form of a blade cast integrally with the trigger arm body, the release excludes any inelastic deformation of the leaf spring due to the long-term effect of bending stress on the plastic material.

I en anden foretrukken udførelsesform, der er vist i fig. 7 og 8, er der ved den forreste ende af cylinderen 20 12 støbt ud i ét med denne tilvejebragt fingergrebfaner 110, 112 til hjælp for operatøren ved sammentrykning af hovedfjederen 80 med den bageste, bevægelige spændefane 88.In another preferred embodiment shown in FIG. 7 and 8, at the front end of the cylinder 20 12 are integrally molded therewith, finger grip tabs 110, 112 are provided to assist the operator in compressing the main spring 80 with the rear movable clamping tab 88.

I fig. 8 er også vist en lille, flad udløseram- 25 hviledel 114, der er dannet på den ellers hældende bageste endedel af stemplet 16. Dette giver et afgrænset hvileområde for udløserarmen 18's spids 90, når værktøjet er i spændt tilstand, og driver udløserarmen til en aktiv stilling, så den forreste ende 52 af den er i det 30 mindste rimeligt nær ved cylinderkroppen og derfor helt bekvem og parat til brug. Den hældende del giver også en større aksial forskydning af stemplet fremad ved hjælp af udløserarmen, når man ønsker at skyde den forreste spids 14 ud af cylinderen 12.In FIG. 8 is also shown a small, flat release frame rest portion 114 formed on the otherwise inclined rear end portion of the piston 16. This provides a defined rest area for the tip 90 of the trigger arm 18 when the tool is in a tensioned state, and drives the release arm to a active position so that the front end 52 of it is at least reasonably close to the cylinder body and therefore perfectly comfortable and ready to use. The inclined portion also provides a greater axial displacement of the piston forward by the release arm when it is desired to slide the anterior tip 14 out of the cylinder 12.

I fig. 9 er svingtappe 116, der understøtter udløserarmen, vist i indgreb med dennes skørtdel 54. Tappene 116 er i den foreliggende udførelsesform støbt ud 35 0 9 145530 i ét med cylinderen 12, og ved samling anbringes skørtdelen 54 med passende i denne tilvejebragte tapoptagende boringer 118 på cylinderen 12 ved elastisk at sprede skørtdelen ud over enderne af tappene 116. Et yderligere 5 træk, der skal bemærkes ved denne udførelsesform er, at der kan tilføjes små fremspring 120 til den bageste del af spændefanen 88, der berører O-ringen 106, for effektivt at blødgøre O-ringens stempelstoppevirkning.In FIG. 9, pivot pin 116 supporting the release arm is shown in engagement with its skirt portion 54. In the present embodiment, the pins 116 are cast out integrally with the cylinder 12, and upon assembly, the skirt portion 54 is appropriately positioned in this pin receiving bore 118. on the cylinder 12 by elastically extending the skirt portion beyond the ends of the pins 116. A further feature to be noted in this embodiment is that small projections 120 can be added to the rear portion of the clamping tab 88 touching the O-ring 106; to effectively soften the piston stop action of the O-ring.

Claims

145530 o Patent claims.

A solder suction of the kind comprising a) a cylinder (12) having a substantially airtightly sliding bearing piston (16); b) a suction nozzle (60,62) located on the front end of the cylinder (12); nozzle channel (60) connects the interior of the cylinder (12) with the surroundings; (c) a suction spring (80) which seeks to move the piston (16) away from the front end of the cylinder (12); in the first position, the piston (16) holds at a first position located near the front end of the cylinder (12) against the force of the suction spring (80), and which in a second position does not retain the piston (16), thereby allowing it under the influence of the suction spring (80) to: (15) moving backward to a second position (Fig. 2); (e) a pawl spring (56) seeking to hold the pawl (90) in said first position; and (f) a release lever (18) which is designed as one on the outside of the cylinder (12) and about a transverse axis (20) mounted two-arm 20 bar, the first arm of which cooperates directly with its end with the holding pawl (90) and whose second arm is arranged to be manually actuated substantially radially towards the cylinder (12), characterized in: g) that the first lever arm of the trigger arm (18) is located on that side of the transverse axis (20) ), which faces away from the front end of the cylinder (12), and h) the piston (16) is formed with a rearward extension (84), the rear part (86) of which is arranged to cooperate with the holding pawl (90) in the said one first position.

Solder suction according to claim 1 and of the kind in which the suction nozzle (60,62) is inserted from the front and is held with friction at the front end of the cylinder (12), characterized in that the rear part (86) of the rear extension of the piston (16) (84) is formed with a rearwardly facing surface substantially located across the longitudinal axis of the cylinder (12) and adapted to be actuated by the holding pawl (90) during a movement of the second arm of the trigger arm 14S530 o (18) away from the cylinder ( 12) for forward movement of the piston (16) from said first position to a third position (Fig. 3), during which the forward movement of the piston pushes the suction nozzle (60,62) at least partially out of the front of the cylinder (12) end.

Solder suction according to claim 1 or 2, characterized in that: (a) the suction spring is a compression spring (80) which is clamped between a rearward-facing shoulder (28) in the cylinder (12) and a forward-facing surface of the piston (16), and b) the cylinder (12) proceeds with the same or larger internal cross-section behind the place where the piston (16) is in said second position.

Solder suction according to claims 1-3, characterized in that: (a) a longitudinal slot (34) extending at one side of the cylinder (12) extending substantially from the location of the piston (16) is in said second position, and (b) that on or near the rear portion (86) of the rearward extension (84) of the piston (16) a finger grip (88) is projected laterally out of the cylinder (12) through the slot (34).

Solder suction according to claim 4, characterized in that the slot (34) extends all the way to the rear end of the cylinder 25 (12) and is open at the rear.

Solder suction according to claims 1-5, characterized in that a stop sleeve (22) formed with stop and / or stop means (94, pivotally, but axially displaceably) is mounted on the rear end of the cylinder (12). 96) 30 for selectively limiting the movement of the trigger arm (18) and / or the finger grip (88).

Solder suction according to claim 6, characterized in that the stop bush (22) is formed with a) an open longitudinal slot (34 ') open at both ends of at least the same width as the slot (12) formed in the cylinder (12). 34)