DE8223327U1 - FILLING AND EMPTYING VALVE FOR INFLATABLE HOLLOW BODIES - Google Patents

Description

Filling and emptying valve for inflatable hollow bodies

The invention relates to a filling and emptying valve for inflatable hollow bodies, in particular rubber boats, with a valve housing which can be fastened with a radial flange on the inflatable body and one of the interior of the has inflatable body facing valve seat which cooperates with a plate-shaped valve member, one in the Valve housing arranged, the valve member in the closing direction biasing spring and with holding means that the valve member hold in the open position.

Filling valves for inflatable boats or the like are usually self-closing, i.e. so-called one-way

... 12

European Patent Attorneys Admitted to the European Patent Office Deutsche Bank AG Hombuij; Jir.'OS / Ssyö? Χΰ & Ζ. 'äpö'ΓΟΟ00) - Postscheck Hamburg 2842-206 Dresdner: Bink * AG "Hamburg; Nt. 993 60 35 (BLZ 2OO 800 00)

III l (i · I · · · · »

DE-Gm 27 16 65Ό · ^ ¹³ first Pall, the membrane has a solid plastic core with an upwardly protruding approach. In normal operation, the extension protrudes into an opening in the valve body so that the membrane can lie against the valve seat in order to keep them in the open position, »In the last-mentioned embodiment, the pin has a transverse pin which is axially displaceable in a longitudinal slot in the valve body. If the pin is pressed in axially far enough against the spring force, the cross pin can be swiveled ± ^ t and brought under a stop in order to keep the valve in the open position »

valves, the valve body of which is in go to the open position and close the valve immediately, when the compressed air supply is turned off, valve members are ™ ' mostly membranes made of flexible material or plate-shaped elements. To empty the air from the hollow body, the Valve member opened by tapping on a corresponding pin connected to the membrane. In this Zussimmenhang has also become known to accomplish the opening with the help of an approach ain closure s top fen of the filling valve (DE-OS 20 20 302).

It has also become known that associated with a membrane

tr *

Both last-described valve constructions allow also dea the use of a suction pump to quickly remove the hollow body and completely emptied. However, they are relatively complex to set up. Most of all, they need one Metal spring to bias the valve member into the closed position. Such springs are mostly coil springs formed from metal that are exposed to severe corrosion, in particular when using the valve in inflatable boats. Finally, there is a disadvantage with known valve arrangements also the large number of individual parts as well as their complex assembly «

The invention is therefore based on the object of providing a filling and emptying valve for inflatable hollow bodies, in particular To create inflatables, which consists of a minimum number of parts and is simple to manufacture and easy to assemble is"

This object is achieved according to the invention in that above the valve member with this one a dead center Spring is connected, which is fixed in its scope on the valve housing.

When the valve according to the invention, the Ventileleraent is means the dead center spring is pre-tensioned in the closed position. If, on the other hand, the valve element is adjusted axially in the opening direction, it snaps

in »ti« it ·· ·· tr

the dead center spring over the dead center and thus holds the vantile member in its opening position. This lets the air out escape the hollow body and / or pumped out by means of a pump verden. Simply gripping the dead center spring can cause it to snap over again so that the Valve is biased again in the closed position. When inflating with the help of a pump, which is usually a check valve it is also easily possible to close the valve member when there is sufficient pressure in the hollow body can also be brought about by compressed air. The pressure difference acting on the valve member is then sufficient, the restoring force of the Apply dead center spring and this in the starting position

In the case of the filling and emptying valve according to the invention, the dead center spring is not only the closing spring for the valve, but also the holding member for fastening the valve element in the valve housing. Finally, the dead center spring also takes over the task of the valve element in its open position keep. It goes without saying that the valve according to the invention by the assumption of three functions by the dead center spring can consist of a minimum number of parts, which are also easy to manufacture and assemble.

In a further embodiment of the invention it is provided that the dead center spring and valve member are made in one piece from plastic are shaped. This further reduces the number of parts,

c · tit · ι

IC | (CCI

lit IC Cf CC

¥ ± e already mentioned, is a connection between dead center spring and valve element necessary. An embodiment (? Er For this purpose, the invention provides that the valve member has a pin to which the dead center spring is connected. The cone can also stand up beyond the dead center spring in order to adjust the valve element in the closing or closing position. Opening position to be effected by hand «

The dead center spring can be formed, for example, by a curved membrane. However, a further configuration is preferable of the invention, according to which the dead center spring has a plurality of circumferentially spaced segments which are in recesses of the valve housing and the flexible arms that are arched upward in the closed position of the valve are connected to the valve member. Compared to a membrane, the segments connected by arms have the advantage that they can be assembled more easily. The arms are preferably molded in one piece on the pegs of the valve element.

To facilitate assembly and the sealing properties

To improve the valve according to the invention, sees one.

Another embodiment of the invention that in the Bohx-ung of the valve housing a ring made of elastomer sealing material is attached to which the dead center spring is fixed and _;

on which the valve seat is formed. During assembly, |

first the sealing ring and valve element with the dead center spring | be brought together. Then the sealing R

ring can be inserted into the bore »

In connection with the last-described embodiment Another embodiment of the invention provides that in the bore of the valve housing one each up and down downwardly directed annular groove is formed, engage in the corresponding annular lugs of the sealing ring. To this The sealing ring is axially secured in both directions «

The arrangement of a sealing ring has the further advantage that, according to a further embodiment of the invention, the outside of the sealing ring can be shaped as a sealing seat which can be brought into sealing engagement with a valve cover.

An exemplary embodiment of the invention is explained in more detail below with reference to drawings.

Fig. 1 shows a section through a valve according to the invention in the open state.

FIG. 2 shows a representation similar to FIG. 1, but with closed valve.

Fig. 3 shows half in view, half in section, the valve member of the Pig valve. 1 and 2.

FIG. K shows a plan view of the illustration according to FIG. 3.

* · Il * ■ f f I I I I I I IJ IMI

1 II ·· ·· · β # ■ I

ι t I Il til · · · · 51

Before going into the details shown in the drawings, it should be noted that each of the The features described is of essential importance to the invention either in and of itself or in conjunction with features of the claims.

In Figures 1 and 2 (in Fig. 1 in HaIbschnitv) a valve housing 10 is in cross-section illustrated _f having a conical ring-shaped flange 11 and a cylindrical portion 12 aufweisto The tapered annular flange 11 is vulcanized, for example, on the outside of an inflatable boat. The cylindrical portion 12 has a Schnellschlußgowinde 13 "on which a lid 14 can be screwed (Fig» i) _t which is articulated about a loop 15 on the valve housing 10 at the outer periphery.

On the inside of the cylindrical portion has an annular collar 12 i6 _t in the at the upper side a groove 17

and also an annular groove 18 formed on the lower side

yy, j is. In this way two axially extending are annular Projections 19 or 20 are formed.

In the cylindrical section 10, a ring seal '21 is used, the outer circumference of which is complementary to the contour of the Inner wall of the cylindrical portion 12 is formed, i.e. with the Nxiten 17 »18 engaging portions as well with an area that adapts to the contour of the federal government 16 *. Only the section engaging in the lower groove 18

4 «· * ti ι ι ι ι ι ι» ι Ii till

• ••• ft ■ JtI I

• · · Il I Il

.."/8th

does not completely fill the groove 18 and has some wall clearance, in order to facilitate the introduction of the sealing ring 21. The sealing ring 21 is slightly above the cylindrical section 12 to the outside and forms a sealing seat 22, against which the inside of the cover 14 comes to the sealing contact when it is screwed onto the thread 13.

A valve member is located within the valve housing 10 23, the structure of which can be seen in more detail in FIGS. 3 and 4.

The valve member 23 has a valve disk 24 with a conical ring or spherical segment-shaped sealing flange 25 on the underside of the valve disk 23 are several evenly spaced around the circumference arranged rounded downwardly facing projections 26 formed. At the top of the valve disk 24 is central a pin 27 is formed on which four arms 28 are formed offset by 90 ° in the circumferential direction, which extend radially extend outside. At the free ends of the arms circular segments 29 are formed, which in cross section approximately are semicircular, as can be seen, for example, from FIG. as Handle to be gripped by hand is above the arms 28, a grip section 30 upwards, the circumference of which

may possibly be roughened.

The assembly of the arrangement shown in FIGS can be done as follows. The valve member 23 is in front

1 <Il · · ι

ιι · ι · ι at

<III · ι «ι · ι ι

> <ι <ι ι ι ι

ι <(ι ι ι ι ι ι ι ι ι ι if

Installation in the vulcanized valve housing 10 inserted into the sealing ring 21. The valve element can either be inserted completely ready in the sealing ring or in a preliminary position, e.g. the ring segments 29 rest on the inner cone of the sealing ring and the valve head rest against the valve seat 32. After complete assembly, the arms 28 are inclined in the direction of the valve head 23 so that, as shown in FIG. The arms 28, which are under spring tension, therefore pretension the valve disk 2k with respect to the sealing ring 21 and prevent air from escaping within the hollow body, which is closed by the valve shown.

If air is blown from the outside through the valve shown into the hollow body (not shown) with the aid of an air pump or a bellows, the arms 28 yield so far that the valve disk 2k lifts off the sealing seat 32 due to the blowing pressure. When the blowing pressure ceases, the valve disk and the sealing seat come into contact again, with the contact force of the valve disk increasing as the internal pressure in the hollow body increases,

If the air is to be released from the hollow body, the pin 27 can be pushed downwards by finger pressure or in some other way be pressed. The arms 28 behave like a dead center spring and hold the valve element 23 in the position shown in FIG.

... / 10

* · * · · ·· BItIfI

··· »· i · I Il I

tr · i »i it ι

ι ι ··· t # ι · ι ι ι

I · I β I I (1 I

(IWt 'lit ·) I.

~ 10 -

provided position. The air can now flow out of the hollow body unhindered escape or can be pumped out of this.

Should the valve from the position shown in FIG are brought into the closed position again, the handle portion 30 can be grasped and pulled upwards, so that the Valve element 23 again assumes the position shown in FIG. But also with an inflation with the help of a Pump or bellows, which have a non-return valve, will be closed anyway after some inflation an almost instantaneous closing of the valve when the blow connector is removed from the valve. It is still flowing some air to the outside, but the differential pressure prevailing at the valve member 23 is by far sufficient to push the valve element | ment 23 again from the one shown in FIG. 1 into the one shown in FIG Adjust back position shown in Fig. 2.

The projections 2.6 on the valve element 23 prevent the skin of the inflatable hollow body from coming too close to the valve member and impairing its function.

The individual parts of the filling and emptying valve shown in Figures 1 to h are molded from a suitable plastic material. It goes without saying that the material of the valve element must have sufficient spring properties. The Di-3htring 21 consists of a softer material than the material for the valve element; at 23 or the housing 10.

... / 11

Claims (1)

Claims j 1. Filling tuid emptying valve for inflatable hollow bodies, in particular inflatables, with a valve housing that with a radial flange is attachable to the inflatable body and one inside the inflatable Has the valve seat facing the body with a plate-shaped valve member cooperates, one arranged in the valve housing, the valve member in the closing direction pretensioning spring and holding means - which hold the valve member in the open position, characterized in that A that above the valve member (23) with this one one Dead center arfweisende spring (28) is connected, which is fixed at its periphery on the valve housing (1O). 2. Valve according to claim 1, characterized in that the dead center spring (28) and valve member (2k) are molded in one piece from plastic. 3. Valve according spoke 1 or 2, characterized in that the valve member (23) has a pin (27) with to which the dead center spring (28) is connected. k. Valve according to one of Claims 1 to 3, characterized in that the dead center spring has several segments (29) arranged at a circumferential distance, which are seated in recesses (31) of the valve housing (10) and which are connected via flexible, ... / 12 Il β Q Λ 1 «5 ·" · · * · * * * ■ ΐι «c ·« · »Λί« is «« β «ί · * • ι ι I it ^ τ · - 12 - in the closed position of the valve upwardly curved arms (28) are connected to the valve member (23). 5. Valve according to claims 2, 3 and h, characterized in that the arms (28) are connected to the pin (27). 6 "Valve according to one of Claims 1 to 5, characterized in that a ring (21) made of elastomer sealing material is attached to the bore of the valve housing (10), to which the dead center spring (28) is fixed and to which the valve seat (3 ² ) is formed. 7 * valve according to claim 6, characterized in that in the bore of the valve housing (10) each has a flat and downwardly directed annular groove (17 »18) is engaged in the corresponding annular lugs (19, 20) of the sealing ring (21). 8. Vantil according to claim 7 »characterized in that the Outside of the sealing ring (21) complementary to the assigned Bore wall is shaped * 9. Valve according to one of claims 6 to 8, characterized in that that the upper end of the sealing ring (21) is shaped as a sealing seat (22) which seals with a valve cover (i4) is engageable. ... / 13