DK9600180U3

DK9600180U3 - valve coupling

Info

Publication number: DK9600180U3
Application number: DK9600180U
Authority: DK
Inventors: Der Blom Nicolaas Van
Original assignee: Nvb International; Blom Nicolaas V D
Priority date: 1996-05-14
Filing date: 1996-05-24
Publication date: 1996-07-12

Description

i DK 96 00180 U3in DK 96 00180 U3

Frembringelsen angår en ventilkobling til pumpeventiler for køretøjsdæk. hvilken kobling består af et koblingshus, som dels er forbundet med en trykkilde, og dels har et tilkoblingshul med en diameter svarende til diameteren på den ventil, som skal tilkobles, hvor tilkoblingshullet er udstyret med et fastgørelsesorgan til fastgørelse 5 på ventilen, samt et tætningsorgan mod ventiler af varierende størrelse, og hvor tætningsorganet er anbragt koaksialt i koblingshuset og etableres i mindst to parallele, diskrete planer, hvis indvendige diametre omtrent svarer til den udvendige diameter på den aktuelle ventilstørrelse, på hvilken koblingen fastgøres under brug, og hvor det tætningsorgan, som ligger nærmest åbningen af tilkoblingshullet i koblingshuset, har 10 størst indvendig diameter, medens det tætningsorgan, som ligger fjernest fra åbningen, har mindst indvendig diameter, og diametre mellem ekstremerne ligger i tilsvarende diskrete afstande mellem yderpositioneme, og hvor der i forlængelse af og koaksialt med koblingshusets centerakse strækker sig en aktiveringspind, som ved aksial forskydning fra en position fjernest fra ventilen føres frem med henblik på aktivering 15 af en central ventilløfter på inderventilen.The production relates to a valve coupling for pump valves for vehicle tires. said coupling consists of a coupling housing which is partly connected to a pressure source and partly has a connection hole with a diameter corresponding to the diameter of the valve to be connected, the connection hole being provided with a fastening means for fastening 5 to the valve, and a sealing means. against valves of varying sizes, wherein the sealing means is arranged coaxially in the coupling housing and is established in at least two parallel, discrete planes whose internal diameters roughly correspond to the outside diameter of the actual valve size to which the coupling is secured during use, and wherein the sealing means; which is closest to the opening of the connection hole in the coupling housing, has the largest internal diameter, while the sealing member which is farthest from the opening has the least internal diameter, and diameters between the extremes are at correspondingly discrete distances between the outer positions, and in extension of and coaxially with the coupling housing center axis st For example, an actuating pin is extended which, by axial displacement from a position furthest from the valve, is advanced for actuation of a central valve lifter on the inner valve.

Der er kendt (PCT/DK96/00055) at en aktiveringspind i koblingshuset er udformet som et med en passende tætning udstyret stempel med en stempelstang, som kan forskydes i det som en cylinder udformede koblingshus, og som uden fysisk påvirkning holdes i en mod cylindervæggen tætnet længdeposition med henblik på, at 20 forskydningen af stemplet efter anbringelsen af ventilkoblingen tilvejebringes automatisk ved hjælp af den trykluft, som fremføres fra trykkilden, og at stemplet i positionen nærmest ventilen, hvor stemplet åbner inderventilen, åbner for luftgennemgang til ventilen og fjernest fra ventilen tætner mindre end 100% mod cylindervæggen. I fig. 8,9,10,14,15 (PCT/DK96/00055) vises diverse aktiveringspinde, som er forsynet med 25 en central blindboring resp. central boring og sideboringer og en V-formede udfræsning forneden, som er vinkelret på stemplets centrale axiale boring. Dette bevirker, at man skal bruge flere kræfter end nødvendigt ved pumpningen, især ved høje lufthastigheder.It is known (PCT / DK96 / 00055) that an actuating pin in the clutch housing is formed as a piston equipped with a suitable seal with a piston rod which can be displaced in the clutch housing shaped as a cylinder and which is held without physical influence in a cylinder wall sealed longitudinal position so that the displacement of the piston after the valve coupling is automatically provided by the compressed air supplied from the pressure source and that the piston in the position closest to the valve where the piston opens the inner valve, opens for air passage to the valve and farthest from the valve seals less than 100% against the cylinder wall. In FIG. 8,9,10,14,15 (PCT / DK96 / 00055), various actuating pins are shown, which are provided with a central blind bore or central bore and side bores, respectively, and a V-shaped cut-out below which is perpendicular to the central axial bore of the piston . This means that more forces are needed than necessary for pumping, especially at high air speeds.

Formålet med denne frembringelse er at tilvejebringe en aktiveringspind, som frembyder ringe luftmodstand, er billig og pålidelig.The purpose of this generation is to provide an actuating pin which provides low air resistance, is inexpensive and reliable.

30 Denne opgave løses ifølge frembringelsen ved hjælp af den i krav 1 angivne frembringelse, hvor aktiveringspinden er udformet som et stempel med en stempelstang, der kan forskydes i det som en cylinder udformede koblingshus, hvor aktiveringspinden 2 DK 96 00180 U3 har en centralboring med en i centralboringen aksialt bevægelig ventil, som holdes lukket af en fjeder hvor den centrale boring i aktiveringspinden med henblik på at sikre en pålidelig styring og en effektiv luftpassage har et blomsterformet tværsnit (X-X , Fig. 2B) over størstedelen af stempelstangen, at den centrale boring i hver ende udvides gradvist med et cirkelrundt tværsnit. Væggene i de gradvise udvidelser danner en vinkel α resp. β mellem 0°og 20°, og ligger normal i intervallet mellem 6° og 12°. Væggen af den gradvise udvidelse ved stempeldelen af den centrale boring danner et ventilsæde for ventilens tætningsflade. Ventilens tætningsflade trykkes på plads af en fjeder, som fx. kan udgøres af et elastisk bånd. I en særlig hensigtsmæssig udformning er ventilen udstyret med mindst én finne eller en lignende anordning, som træder på toppen af kanten af Dunlop-Woods inderventil.This task is solved according to the invention by the method of claim 1, wherein the actuating pin is formed as a piston with a piston rod which can be displaced in the cylinder housing, the actuating pin 2 having a central bore having a central bore in the central bore axially movable valve held closed by a spring in which the central bore of the actuating pin to ensure reliable control and effective air passage has a flower-shaped cross section (XX, Fig. 2B) over most of the piston rod that the central bore at each end, gradually expand with a circular cross section. The walls of the gradual extensions form an angle α and β, respectively, between 0 ° and 20 °, and are normally in the range between 6 ° and 12 °. The wall of the gradual expansion at the piston portion of the central bore forms a valve seat for the sealing surface of the valve. The sealing surface of the valve is pressed into place by a spring which e.g. can be constituted by an elastic band. In a particularly convenient embodiment, the valve is provided with at least one fin or similar device which enters the top of the Dunlop-Wood's inner valve.

Frembringelsens mangel på sideboringer samt den gradvise udvidelse af den centrale boring giver mindre luftmodstand, og dette bevirker, at den er komfortabel at pumpe med, selv med (lavtryks)pumper uden indbygget kontraventil. Desuden er frembringelsen billig.The lack of side bore generation as well as the gradual expansion of the central bore give less air resistance and this makes it comfortable to pump with, even with (low pressure) pumps without a built-in non-return valve. In addition, production is cheap.

Frembringelsen gør at aktiveringspinden er pålidelig, idet ventilen virker uafhængigt af en pasning med andre dele af ventilkoblingen. Desuden virker ventilen uafhængigt af den pågældende ventils tolerancer. Frembringelsen kan bruges i alle typer universelle ventilkoblinger.The production makes the actuating pin reliable, the valve acting independently of a fit with other parts of the valve coupling. In addition, the valve operates independently of the tolerances of that valve. Generation can be used in all types of universal valve couplings.

Frembringelsen vises på fig. 1 og 2. På tegninger viser: fig. 1 frembringelsen, vist i den distale position i en ventilkobling, som kan klemmes på ventiler, fig. 2A viser frembringelsen forstørret, hvor ventilen i aktiverings-pinden er i aktiveret tilstand, fig. 2B viser snittet X-X af fig. 2A, fig. 2C viser frembringelsen forstørret, hvor ventilen i aktiveringspinden holdes lukket af Rederen, fig. 3 gengivelse af matematisk model for det blomsterformede tværsnit X-X af fig. 2B.The production is shown in FIG. 1 and 2. In the drawings: FIG. 1 shows the projection shown in the distal position of a valve coupling which can be clamped on valves; FIG. 2A shows the enlarged representation where the valve in the actuating pin is in the activated state; FIG. 2B shows the section X-X of FIG. 2A, FIG. 2C shows the enlarged production where the valve in the actuating stick is kept closed by the shipowner; FIG. 3 shows a mathematical model for the flower-shaped cross section X-X of FIG. 2B.

På fig. 1 vises aktiveringspinden med stemplet 1 i sin distale position i et koblingshus af en ventilkobling, som klemmes på ventiler. Stemplet 1 har en stempelstang 2, og erIn FIG. 1, the actuating pin with the piston 1 is shown in its distal position in a coupling housing of a valve coupling which is clamped on valves. The piston 1 has a piston rod 2 and is

3 5 10 15 DK 96 00180 U3 forsynet med en centralboring 3. På fig. 2A vises aktiveringspinden i aktiveret tilstand, hvor en aksialt bevægelig ventil 4 har en tætningsflade 5. Luften strømmer gennem en udvidelse 6 af centralboringen 3 gennem sidstnævnte til den distale gradvise udvidelse 7. Væggen 8,9 danner en vinkel α resp. β med væggen 10 i centralboringen 3, og disse er større end 0°og mindre end 20°, og ligger normal i intervallet mellem 6° og 12°. Begge udvidelser 6,7 har distalt fra overgangen til centralboringen 3 et cirkelrundt tværsnit. På fig. 2B vises snittet X-X fra fig. 2A, som er blomsterformet - endvidere vises en finne 12. På fig. 2C vises aktiveringspinden med ventilen lukket. Fjederen 11, som er fastgjort i stemplet 1, udgøres af et elastisk bånd og trykker den aksialt bevægelige ventil 4 ned, således at ventilens tætningsflade 5 trykkes mod væggen 8 i udvidelsen 6. På fig. 3 vises et matematisk model for det blomsterformede tværsnit X-X af fig. 2B, som er passende approximalt. Den generelle formel er: M r = ro3 5 10 15 GB 96 00180 U3 provided with a central bore 3. In FIG. 2A, the actuating pin is shown in the activated state, where an axially movable valve 4 has a sealing surface 5. The air flows through an extension 6 of the central bore 3 through the latter to the distal gradual extension 7. The wall 8,9 forms an angle α and β respectively with the wall 10. in the central bore 3 and these are greater than 0 ° and less than 20 °, and are normally in the range between 6 ° and 12 °. Both extensions 6.7 have a circular cross section distal from the transition to the central bore 3. In FIG. 2B, section X-X of FIG. 2A, which is flower-shaped - a fin 12 is also shown. 2C, the actuating stick is shown with the valve closed. The spring 11, which is fixed in the piston 1, is constituted by an elastic band and depresses the axially movable valve 4 so that the sealing surface 5 of the valve is pressed against the wall 8 in the extension 6. In FIG. 3 shows a mathematical model for the flower-shaped cross section X-X of FIG. 2B, which is suitably approximate. The general formula is: M r = ro

sin(|(p) hvor r0 > 0, a > 0, m ^ 0, m e 1 n 0, η € M 0 s φ s 2π og hvor r = cirkelformede snits resp. kronbladenes størrelse r0 = radius af cirkelformede snit i centrum, a s m = kronbladenes bredde, n = antal kronblade.sin (| (p) where r0> 0, a> 0, m ^ 0, me 1 n 0, η € M 0 s φ s 2π and where r = circular incisions or petals size r0 = radius of circular incision in the center , asm = width of petals, n = number of petals.

I det viste model er: ro s °·4 rrnax , m =4 og n = 6.In the model shown are: ro s ° · 4 rrnax, m = 4 and n = 6.

Claims

An actuating pin for a valve tire for pump valves for vehicle tires, which actuating pin in the valve coupling housing is formed as a piston (1) with a piston rod (2) which can be displaced in the cylinder housing coupling housing, wherein the actuating pin has a central bore (3 ) with a valve (4) axially movable in the central bore (4) which is held closed by a spring (11) which is new in that the central bore (3) of the actuating pin for reliable control and efficient air passage has a flower-shaped cross-section (XX) over most of the piston rod (2) that the central bore (3) at each end is gradually expanded by a circular cross-section.

Activation pin according to claim 1, which is new in that the spring (11) is constituted by an elastic band.

Activation stick according to claim 1, which is new in that the wall (8), (9) in the gradual extension (6), (7) forms an angle α and β respectively greater than 0 ° and less than 20 °.

Activation pin according to claim 3, which is new in that the angle α and β are in the range between 6 ° and 12 °.

Activation pin according to claim 1, which is new in that the wall (8) of the gradual extension (6) at the piston part of the central bore (3) forms a valve seat for the sealing surface (5) of the valve (4).

Activation pin according to claim 1, which is new in that the valve (4) is equipped with at least one fin (12). 25 30