DK158261B

DK158261B - SAFETY DEVICE FOR PISTON VALVES TO DELIVER A FLUIDUM.

Info

Publication number: DK158261B
Application number: DK480683A
Authority: DK
Inventors: Aake Nielsen
Original assignee: Ljungmans Verkstader Ab
Priority date: 1982-10-20
Filing date: 1983-10-19
Publication date: 1990-04-23
Also published as: NO157254B; SE8205947D0; DK480683A; SE8205947L; GB2134882A; NO157254C; FI72587B; FI833796A; DK158261C; GB2134882B; FI72587C; NO833794L; GB8327733D0; SE440641B; DK480683D0; FI833796A0

Description

x DK 15826 IBx DK 15826 IB

Opfindelsen angår en spærreanordning ved pistolventiler af den art, som er angivet i hovedkravets indledning.BACKGROUND OF THE INVENTION This invention relates to a locking device for gun valves of the kind set forth in the preamble of the main claim.

Kendte anordninger af denne art, hvor udløseren for spærring må samvirke med et enkelt hak i ventilens krop, er forbundet med den ulempe, at når udløseren ved ønsket 5 afbrydning af den målerkontrollerede afgivning eller med andre ord ved ønsket ventillukning trækkes tilbage og slippes, kommer udløserens indgrebsdel på uønsket måde alt for let til fornyet indgreb med hakket, hvilket medfører, at den ønskede afbrydning af afgivningen ikke 10 opnas.Known devices of this kind, in which the trigger for interlocking must cooperate with a single notch in the body of the valve, are associated with the disadvantage that when the trigger at the desired interruption of the meter controlled delivery or in other words at the desired valve closure is withdrawn and released, undesirably engages the trigger portion of the trigger too easily for reclosing engagement with the notch, resulting in the desired interruption of delivery not being achieved.

Det er formålet med opfindelsen at eliminere denne ulempe ved de kendte spærreanordninger.The object of the invention is to eliminate this disadvantage of the known locking devices.

1R1R

Dette opnås ifølge opfindelsen ved at indrette en spærreanordning af den i krav l's indledning nævnte art som nærmere angivet i kravets kendetegnende del.This is achieved according to the invention by arranging a locking device of the kind mentioned in the preamble of claim 1 as further specified in the characterizing part of the claim.

Yderligere ejendommeligheder ved opfindelsen vil fremgå 90 af underkravene.Further peculiarities of the invention will be apparent from 90 of the subclaims.

Opfindelsen vil nu blive nærmere forklaret under henvisning til tegningen, på hvilken 25 fig. 1 viser en del af en pistolventil med en udførelsesform for spærreanordningen ifølge opfindelsen i indgangsblokerende stilling, fig. 2 viser samme udførelsesform i spærrende stilling, 30 og fig. 3 viser en anden udførelsesform for opfindelsen, hvor den indgangsblokerende tilstand vises med heloptruk- ne og den spærrede tilstand med stregpunkterede linier.The invention will now be explained in more detail with reference to the drawing, in which FIG. 1 shows a part of a gun valve with an embodiment of the locking device according to the invention in the entry blocking position; FIG. 2 shows the same embodiment in the locking position, 30 and fig. 3 shows another embodiment of the invention, in which the input blocking state is shown with full lines and the blocked state with dashed lines.

35 235 2

DK 15826 1 BDK 15826 1 B

I fig. 1 vises en pistolventil til motorbrændstof med en krop 1, et afgivningsrør 2, et tilførselsrør 3 og en mellem disse rør, 2, 3 anordnet ventilmekanisme 4. Denne er belastet for indtagning af en lukket stilling, hvilken 5 belastning kan hæves ved hjælp af en på pistolventilens krop ved 5 bevægeligt monteret udløser 6, anordnet for indgreb med en ventilstang 7, hvorved ventilen kan åbnes ved trækning af udløseren fra en forreste stilling (hel-optrukket i fig. 1) til en bageste stilling (stregpunk-10 teret i fig. 1) eller til en holdestilling (fig. 2). Udløseren har en ophængningsdel 6a og en fingermodtagende U-formet bøjledel 6b, som ved sin basis ved hjælp af en tap 8 er bevægeligt monteret på ophængningsdelen 6a for svingbarhed i udløserens nævnte bevægelsesplan. Bøjlen 6b 15 danner således en toarmet vægtstang, hvis ene, nederste arm 6c er en indgrebsarm, anordnet til at svinge eller svinges til indgreb med en holdeanordning på kroppen, og en anden, øverste arm 6d er en manøvrearm, anordnet til ved påvirkning med en finger i bøjlen at svinge indgrebs-20 armen 6c ud af indgreb med holdeanordningen. Dette indgreb definerer en åben ventilstilling.In FIG. 1 shows a motor fuel gun valve with a body 1, a delivery tube 2, a supply tube 3 and a valve mechanism 4 arranged between these tubes, 2, 3, which is loaded to take a closed position, which 5 can be raised by means of a on the body of the gun valve at 5 movably mounted trigger 6, arranged for engagement with a valve rod 7, whereby the valve can be opened by pulling the trigger from a forward position (fully drawn in FIG. 1) to a rear position (dashed dots in FIG. 1) or to a holding position (Fig. 2). The trigger has a suspension member 6a and a finger receiving U-shaped hoop member 6b, which at its base is movably mounted to the suspension member 6a for swingability in the said movement plane by means of a pin 8. Thus, the shackle 6b 15 forms a two-arm bar, one lower arm 6c of which is an engagement arm, arranged to pivot or pivot to engage with a holding device on the body, and another upper arm 6d is a maneuvering arm adapted to actuate with a finger in the hoop to swing the engagement arm 6c out of engagement with the holding device. This procedure defines an open valve position.

Den ovenfor beskrevne konstruktion er konventionel og behøver ingen nærmere forklaring.The construction described above is conventional and needs no further explanation.

25 I det første udførelseseksempel på opfindelsen er indgrebsarmens 6c forreste ende nedadbukket og indrettet til at gå i indgreb med en holdeansats 9, som er defineret mellem et forreste, tykt parti 9 a og et bages te, smalt 30 parti 9b af en i kroppen 1 indsat cirkulær tap 9c.In the first exemplary embodiment of the invention, the front end of the engaging arm 6c is bent downwardly and arranged to engage a holding arm 9 defined between a front thick portion 9a and a baked tea, narrow portion 9b of one in the body 1 inserted circular pin 9c.

På det smalle parti 9b af tappen er der giidbart anbragt en cylindrisk bøsning 10, som ved hjælp af en fjeder 11 er belastet til at indtage en stilling, hvor en indvendig 35 del af bøsningens forkantsflade 10a er presset an mod ansatsen 9. Fjederen er i det viste eksempel en skruefjeder, som, idet den omslutter det smalle parti 9b med 3On the narrow portion 9b of the pin, a cylindrical sleeve 10 is provided, which is loaded by means of a spring 11 to assume a position in which an inner part of the leading edge surface 10a of the sleeve is pressed against the shoulder 9. The spring is the example shown shows a coil spring which, as it encloses the narrow portion 9b by 3

DK 188261 BDK 188261 B

sin ene ende, støtter sig på en ansats i bøsningens indervæg og med sin anden ende støtter sig på kroppen. Bøsningens udvendige diameter, i det mindste ved bøsningsforkanten, er større end det tykke partis 9a 5 diameter, så at en yderdel af bøsningens forkantsflade danner et stop for indgrebsarmens 6c nedadbukkede ende, når indgrebsarmen 6c indtager en nedadsvunget tilstand.its one end, relies on an abutment in the inner wall of the sleeve and with its other end rests on the body. The outer diameter of the sleeve, at least at the sleeve leading edge, is larger than the diameter of the thick portion 9a, such that an outer portion of the leading edge surface of the sleeve forms a stop for the downwardly bent end of the engaging arm 6c when the engaging arm 6c assumes a downwardly swinging state.

Når pistolventilen skal åbnes for afgivning, trækkes ud-10 løseren 6 bagud med en finger på sædvanlig måde. Hvis udløseren skal hænges op i holdestilling, svinges indgrebsarmen 6c nedad, og når dens nedbukkede ende er kommet til anslag mod stoppet på bøsningens 10 forkants flade, fortsættes trækningen bagud, nu mod indvirkning af 15 fjederen 11, og med fingeren svinges indgrebsarmen 6c omkring ledtappen 8 yderligere nedad og ind i den indgang til holdeansatsen 9, som foreligger mellem denne ansats og bøsningens forkantsflade 10a. Udløseren slippes nu fremad, så at dens bukkede ende kommer til indgreb med 20 ansatsen 9.. Udløseren kan nu slippes helt, hvorved den standses i denne ophængte spærrestilling.When the gun valve is to be opened for delivery, the release 6 is pulled back with a finger in the usual manner. If the trigger is to be suspended in the holding position, the engaging arm 6c is pivoted downwards and when its downward end has come to a stop against the stop on the front edge of the sleeve 10, the pull is continued backwards, now against the action of the spring 11, and with the finger the engaging arm 6c is pivoted about the articulated pin. 8 further downwards and into the entrance to the holding shoulder 9 which exists between this shoulder and the leading edge surface 10a of the sleeve. The trigger is now released forward so that its bent end engages with the shoulder 9. The trigger can now be fully released, thereby stopping it in this suspended locking position.

Når brugeren vil afbryde afgivningen, gribes udløseren 6 påny, og indgrebsarmen 6c svinges ud af indgrebet med 25 ansatsen 9 ved hjælp af manøvrearmen 6d. Fjederen 11 trykker bøsningen fremad, indtil dennes inderste forkantsflade ligger an mod ansatsen 9, hvorved bøsningen 10 blokerer ovennævnte indgang mod fornyet, utilsigtet indtræden af den nedadbukkede ende.When the user wants to interrupt delivery, the trigger 6 is gripped again and the engagement arm 6c is swung out of the engagement with the shoulder 9 by means of the maneuvering arm 6d. The spring 11 pushes the sleeve forward until its innermost leading edge surface abuts the abutment 9, whereby the sleeve 10 blocks the above mentioned entrance to the new, inadvertent entry of the downwardly bent end.

3030

Det er åbenbart, at denne indgangsblokering foreligger selv i det tilfælde, at udløseren ikke har været hængt op, men fra den forreste stilling er blevet trukket direkte, uden ovennævnte nedsvingning åf indgrebsarmen 6c, 35 til den i fig. 1 med stregpunkteret linie viste bageste stilling og ved ønsket afbrydelse af afgivningen slippes. Udløseren kan således vende tilbage til sin forreste 4It is evident that this input blockage exists even in the event that the trigger has not been suspended, but has been pulled from the front position directly, without the aforementioned oscillation of the lever 6c, 35 to the one in FIG. 1 in the dotted line shown in the rear position and in case of desired interruption of delivery is released. The trigger can thus return to its front 4

DK 158261 BDK 158261 B

stilling uden risiko for uønsket ophængning i holdestillingen.position without the risk of unwanted suspension in the holding position.

For at undgå den sjældent aktuelle eventualitet, at man 5 efter gribning af udløseren for afbrydelse af afgivningen fortsætter på unaturlig måde at påvirke indgrebsarmen 6c med nedadrettet kraft, samtidigt med at udløseren trækkes bagud for ophævelse af spærrestillingen, kan det smalle parti 9b have en opadstyrende kamflade 9d.In order to avoid the rare current eventuality that, after gripping the release interrupt release lever, the lever 6c continues to act unduly downward, while pulling the trigger backward to release the locking position, the narrow portion 9b may have an upwardly controlling comb surface 9d.

10 Bøsningen 10 behøver ikke nødvendigvis at være fjederbelastet; med den viste skrå placering af den kan tyngdekraften tjene som forbelastning på bøsningen, så at den indtager en blokerende stilling over indgangen til an-15 slaget 9.The sleeve 10 need not necessarily be spring loaded; with the oblique position of it shown, gravity can act as a preload on the bushing to assume a blocking position over the entrance to the impact 9.

I udførelsesformen ifølge fig. 3 er der på kroppen 1 for pistolventilen fastgjort et hus 12 til en båndfjeder 13, som med sin forende er indsat i huset og fastgjort f.In the embodiment of FIG. 3, on the body 1 of the gun valve is attached a housing 12 to a belt spring 13, which with its front end is inserted into the housing and fastened f.

20 eks. ved hjælp af nitter på afstand fra en hustagdel 12a og med sin bageste ende frit ligger an mod indersiden af en anden hustagdel 12b. Fjederen 13 har en mellem nævnte endedele ud fra huset, forbi tagdelene fremskydende pukkel 13a, som er anordnet for indgreb med udløserbøjlens 25 indgrebsarm 6c. En indgang 14 for indgrebsarmens 6c forende er defineret mellem fjederen 13 og hustagdelen 12a.20, for example, by means of rivets spaced from one roof roof portion 12a and with its rear end freely abutting the inside of another roof roof portion 12b. The spring 13 has a hump 13a extending between said end portions from the housing, which extends past the roof members 13a, which is arranged for engagement with the engagement arm 6c of the release bracket 25. An entrance 14 for the front end of the engaging arm 6c is defined between the spring 13 and the roof member 12a.

For afspærring af udløseren i ventil-åbentholdende stilling nedtrykkes fjederen ved puklen med hjælp af ind-30 grebsarmen 6c, og denne arm slippes eller føres fremad ind i nævnte indgang, hvorved fjederen holder armen i indgreb med tagdelen 12b. Når afgivningen skal ophøre, trækkes udløsren tilbage, hvorved fjederen 13 fjedrer opad og blokerer indgangen 14.In order to lock the trigger in the valve-opening position, the spring is depressed at the bend by means of the engaging arm 6c, and this arm is released or advanced forwardly into said input, whereby the spring holds the arm in engagement with the roof part 12b. When dispensing is to cease, the trigger is retracted, the spring 13 springing upward and blocking the entrance 14.

3535

Claims

A gun valve locking device for delivering a fluid, particularly motor fuel, and arranged to lock the gun valve trigger (6) in a valve open holding position by engagement between a portion (6c) of the trigger and a housing located on the gun valve (1) suspension device (9), which for suspension has an entrance to said trigger part, characterized in that the locking device also has a securing device (10, 13) which is preloaded to take a position which blocks said input and can be moved away from the entrance by means of the trigger part (6c) after manual force actuation 15 thereof, in a direction different from the normal release and return direction of the trigger, for which purpose said trigger part (6c) is movably mounted.

Locking device according to claim 1, characterized in that the entrance is defined by a shoulder (9) between a front, thick portion (9a) and a rear, narrow portion (9b) of the housing (1) and by one at the rear. narrow portion (9b) slidable leading edge surface (10a), said slot forming said securing device, and said leading edge surface (10a) 25 having a stop for a release member (6c) at a level above said thick portion (9a).

Locking device according to claim 1 or 2, characterized in that the preload is provided by a spring (11, 13).

Locking device according to any one of claims 1-3, characterized in that said trigger part (6c) is formed by a shackle (6b) movable on the trigger for movement of the trigger.