DE7238313U - VALVE ARRANGEMENT FOR INFLATABLE HOLLOW BODIES IN PARTICULAR MADE OF RUBBER-ELASTIC FABRICS - Google Patents

Description

Valve arrangement for inflatable hollow bodies, in particular made of rubber-elastic materials

The innovation relates to a valve arrangement for inflatable hollow bodies, in particular made of rubber-elastic ones Substances in which a valve body is inserted into an opening in the hollow body and fastened in a gas-tight manner, and in the Valve body, a valve insert is arranged which is in communication with a valve opening in the valve body and both by an external gas pressure greater than the internal pressure in the hollow body and by a gas pressure in the valve opening insertable element can be brought into its open position

Inflatable hollow bodies made of a rubber elastic material are, for example, sports ball bladders that are enclosed in a leather cover introduced and inflated therein. The valve arrangement provided for the bladder must pass through both an external one higher pressure, which is applied, for example, with the help of a hand pump, as well as by a mandrel or the like

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let open. An opening with a spike is done, if Air is to be deflated

Various valves which operate with springs, balls, flaps, cones, etc., have become known for such purposes. The valve housing or the valve body are screwed or glued to the bladder

Valves made of natural rubber have also become known which, due to the elastic material, by stretching the Ensure the desired tightness on the valve seat Such rubber valves are normally glued to the bladder

A disadvantage of the other known valves is the large number of individual parts required. This results a not inconsiderable installation effort · Often the valve assemblies are too heavy in their construction, so that for example Quality sports balls must also be balanced

The task of the innovation is to create a valve arrangement,

and is

which are easy to manufacture / easy to assemble / and a low one Owns weight.

In a valve arrangement of the type mentioned

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this problem dadtntch solved) that the valve body is one piece is molded from thermoplastic plastic.

Such a valve body, which is preferably rotationally symmetrical is, can be produced in a simple manner and connected to the hollow body, for example by gluing. In addition, such a valve body made of thermoplastic material has a low weight, so that, for example wisely arranged in a football bubble, no significant imbalance is given to the ball

Gluing the valve body to the hollow body is also associated with disadvantages if, during the final inspection, the glued valve assemblies it turns out that the hollow body or the valve is leaking · In this case the entire Hollow bodies are declared as rejects · Therefore, the innovation in a preferred embodiment suggests that the valve body is rotationally symmetrical and with a sleeve-shaped section in the neck-shaped Opening protrudes, and that a retaining ring is provided which can be pushed onto the sleeve-shaped section, that the neck of the opening is held between these parts · In this embodiment of the valve arrangement according to the innovation the retaining ring is first inserted into the opening and then the valve body · Then the Retaining ring pushed over the sleeve-shaped section, with the edge lying around the opening between the

Retaining ring and the outside of the sleeve-shaped section is led and held.

Another embodiment of the innovation sees in this Context before that the retaining ring has one or more projections on the inside, and that the sleeve-shaped Section has a recess or undercut on the outside into which the projection can be snapped is. In this way, the retaining ring is securely held on the sleeve-shaped section of the valve body.

The one held between the retaining ring and the sleeve-shaped section At this point, the skin of the hollow body should be in the most effective sealing engagement possible with the valve body. To this end, a further embodiment of the innovation proposes that the retaining ring be one or more circular on the inside Has circumferential grooves, and that the sleeve-shaped Section on the outside has complementary shaped circular circumferential ribs, which with the grooves in Are brought into engagement. The skin of the hollow body is squeezed sealingly into the grooves by the sealing ribs in order to to ensure a gas-tight connection between the valve body and the hollow body in its opening.

By connecting the valve body to the hollow body with the help of a retaining ring, the advantage is obtained that

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if the valve is found to be leaking or of the hollow body of the valve body can be removed again in a simple manner, so that not the entire unit as Committee "must be dealt with. In addition, with help The retaining ring enables quick assembly of the entire valve arrangement, thanks to the interaction of the valve body and retaining ring should now be obtained not only an effective seal, but also a perfect fastening of the valve body. In order therefore to have a sufficient frictional effect between the sleeve-shaped section and the skin of the hollow body on the one hand and clamping ring and skin on the other hand *, provides a further embodiment of the innovation, that the sleeve-shaped section and / or the retaining ring with the opening neck with the help of an adhesive with permanent or reversible adhesive effect is connected. If an effective permanent adhesive is used, under certain circumstances also the above described & äESEE snap a projection in there is no undercut.

The retaining ring must sit on the sleeve-shaped section of the valve body so that it can be securely fastened of the valve body and sealing is ensured. In this context, the innovation suggests that the retaining ring sits clamped on the sleeve-shaped section · For this purpose, the retaining ring is preferably designed to be more elastic than the valve body or its sleeve-shaped section

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Instead of a positive connection between the retaining ring and the sleeve-shaped section of the valve body, According to the invention, it can also be provided that at least part of the outer surface of the sleeve-shaped section is at an angle is inclined to the axis of the valve body and that at least part of the inner surface of the retaining ring is shaped accordingly is that the latter sits self-locking on the sleeve-shaped section · Of course, can be used for additional fastening a permanent or only temporary adhesive is applied to the retaining ring and / or the sleeve-shaped section will·

Another embodiment of the innovation is that the valve body has a plate-shaped radially outward has protruding flange which rests against the outer skin of the hollow body. This ensures that the The valve body is held securely in place and cannot be pushed into the hollow body through the opening can.

In this context, the innovation also provides that

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the retaining ring has a / radially outwardly extending flange which comes to rest against the flange of the valve body, whereby the intermediate skin of the hollow body is deflected and held between these parts. This design of the valve assembly according to the innovation

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it is achieved that the material of the hollow body in the area of the opening into which the valve arrangement is inserted, is largely spared by the fact that it is primarily subjected to train.

Many inflatable Hohlkäper, such as sport ball bladders are inflated with hand air pump "D _a ago, a further embodiment of the innovation is that the valve body has a neck-shaped portion whose inner bore is tapered from the outside inwards and serves to guide a pump mouthpiece or the like. With the help of the tapering of the bore, the pump mouthpiece can be sealed against the bore wall. In order to prevent the pump mouthpiece from penetrating too deeply into the valve arrangement, it is also provided in this context that the inner bore has a shoulder at the inner end. This shoulder prevents the pump mouthpiece from further penetrating the valve arrangement.

Vie already mentioned several times above is the one in accordance with the innovation Valve arrangement in an advantageous Veise suitable for ball bubbles, which are enclosed by a leather cover. For this application, a further advantageous embodiment provides that the valve body has a retaining collar has, which is at a distance and approximately parallel to the flange of the

Valve body runs. The edge of the opening in the leather sleeve can thus be pushed into the space between the outer retaining collar and the flange, whereby the relative Position of the bladder to the sleeve is secured.

j The valve that closes or releases the valve opening

element can be formed in any suitable manner

and be arranged. A preferred innovation according to the invention; staltung provides for this that the valve insert on a

j the bottom part of the retaining ring is supported.

Be 'The valve insert / is preferably made of a one-piece

j rubber-elastic element that is produced in one production

is adjustable · For this purpose, the innovation further provides that the Valve insert has an elastic sealing cuff which has a cylindrical protruding inward into the valve body Surrounding section from the outside in a sealing manner, through which the valve opening is guided. The sealing collar expediently surrounds it not only a sealing surface of the casing part of the cylindrical section, but also lies in a sealing manner against the edge of the free end face of the cylindrical section.

In the event that the valve insert is seated on the bottom part of the retaining ring, it is useful if nierfür one Fixation took place therefore provides a further embodiment

the innovation that the Ventileineatz non-positively or positively is connected to the bottom part. A preferred embodiment also provides for this purpose that the bottom part has a pin which protrudes into the interior of the retaining ring and which is inserted into a corresponding recess in the valve insert is insertable ©

If the valve insert should also lie against the lower end face of the cylindrical section in a sealing manner, it turns out it is particularly advantageous if, according to the innovation, the bottom part is designed to be elastic and in the direction of the Valve body is biased. In the idle state, the bottom is then expediently slightly curved upwards and then becomes when placing the retaining ring on the sleeve-shaped section pressed down under spring action.

In the embodiments described above, for the valve assembly three items are used, namely valve body, retaining ring and valve insert. However, it is too possible to get by with only two components. For this purpose, the innovation suggests that the valve body be in a sleeve-shaped Has section protruding, integrally formed with this sealing ring, and that the retaining ring has a Has bottom part, of which a soft elastic, integrally molded cuff on this points upwards and itself sealingly around the sealing ring. The sealing ring is made of a stiffer material than the sleeve. How to know

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the retaining ring with the one-piece molded sleeve not only fulfills retaining and sealing functions, but also also that of the valve insert The bottom part of the retaining ring is again suitably spring-loaded

Embodiments of the innovation are to be described in more detail below with the aid of drawings

Pig. 1 shows in section a valve body for a valve arrangement according to the innovation

Fig. 2 shows in section a retaining ring for the valve body according to Fig. 1.

Fig. 3 shows in section a valve insert for a valve arrangement according to the innovation.

Fig. 4 shows the parts shown in Figs. 1-3 when assembled

Fig. 5 shows in section another embodiment of a valve body.

Fig. 6 shows in section a further embodiment of a valve body.

Fig. 7 shows in section a retaining ring for a valve body according to Fig. 6

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Flg. 8 shows a further embodiment in section a valve body.

Flg. 9 shows in section a retaining ring for a valve body according to FIG. 8th.

The valve body shown in Fig. 1 is rotationally symmetrical andt is composed essentially of a sleeve-shaped section 20 and a cylindrical section 21 which partially protrudes into this and which are formed in one piece made of thermoplastic PLASTIC. At the junction between the cylindrical and the sleeve-shaped section 21 or 20, a plate-shaped flange protruding radially outward is formed. Above the plate-shaped flange 4 is on the cylindrical section 21 a retaining collar 3 is integrally formed, whereby between the flange 4 and retaining collar 3 an approximately triangular cross-section

Gap 22 is formed. In the cylindrical section

themselves

21, a recess 23 is provided into / from a lower end wall 24 of the cylindrical portion 21 a rotationally symmetrical neck 1a extends upwards, which is at the level of the upper end face of the cylindrical portion 21 ends. The neck 1 a surrounds a bore which tapers from top to bottom and which ends at a shoulder 25 which tapers radially inward. The paragraph 25 delimits a valve opening 2,

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which leads into the interior of the sleeve-shaped section 20, the outer wall of the 3 sleeve-shaped sections 20 runs somewhat conically and has below the flange 4 at a distance from one another three circular encircling Ribs 5 on. A circular circumferential undercut is located near the lower end of the sleeve-shaped section 26 is provided, whereby a snap ring 6 is formed as a result of the elastic material.

Pig. 2 shows a Pig valve body. 1 matching retaining ring, one axially running lower Hand part 27 and a slightly conical wall part 28 has. The retaining ring is down by a bit Completed upwardly curved bottom part 14, from which a pin 15 protrudes upward in the center. The edge part 27 has inwardly projecting projections 13 which are triangular in cross section. The conical wall part 28 points on the inside three superimposed grooves 12. A radially outwardly facing puddle 11 forms the upper one Band of the retaining ring

Pig. 3 shows a valve assembly or a valve element, that essentially consists of a soft elastic sealing sleeve 8 and a cylindrically shaped section, the is formed in one piece with the cuff 8, is composed. The sealing collar 8 has a truncated cone

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723821315.2.73

shaped part 30, which is approximately in the middle with the outer wall of the cylindrical portion 29 is connected. The part 30 merges into a cylindrical part 31 smaller Wall thickness, a sealing surface 32 being formed at the transition. At the top of the forehead is a truncated cone Pressure surface 9 molded into the cylindrical section 29. From the lower end is in the cylindrical section

29 a bore 10 is provided which is complementary to the pin 15 of the retaining ring according to FIG. 2. Between the upper one Part of the cylindrical portion 29 and the conical part

30 of the cuff 8, a dirt chamber 17 is formed.

In Pig. 4, the individual parts shown in Figures 1 to 3 are assembled. At the mouth of a sports ball bubble 16, an inwardly projecting neck 33 is provided. The retaining ring is first inserted into the unmarked opening 2 and then the valve element according to FIG. 3 on the pin 15 of the bottom part 14 inserted, which begins in the bore 10 of the valve element. Then the valve body according to Fig. 1 is pressed in, whereby the neck 33 due to the elastic formation of the parts between the conical wall part 28 of the Retaining ring and the outer wall of the sleeve-shaped section is clamped. The pinching or squeezing is for the purpose of bringing about an effective support and

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seal promoted by the ribs 5 of the valve body engaging in the grooves 12. The skin of the bladder 16 is guided through the flanges 4 and clamped. The dimensions of the valve body and the retaining ring are included chosen so that with a secure clamping and sealing of the bladder 16 of the snap ring 6 of the sleeve-shaped Section snaps behind the projections 13 of the retaining ring, whereby the valve body and retaining ring are securely held together are.

The valve insert according to FIG. 3 is in turn dimensioned so that the upper cylindrical part 31 of the sealing collar sealingly attaches to the outer jacket of the cylindrical part 21 of the valve body. Furthermore, the sealing surface 32 the sealing collar 8 pressed against the sealing surface 7 on the end face of the cylindrical portion 21 as a result of the Spring action of the bottom part 14. As already mentioned above, this is designed to be resilient and in the idle state after arched at the top. When assembling the parts, the floor is brought into an approximately level position and thereby presses the valve insert with its sealing surfaces against the corresponding sealing surfaces of the cylindrical section 21. In order to ensure a good seal, the sealing Äanschette 8 is made of a softer material than the valve body or the cylindrical section 21. How

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can be seen from Fig. 4, the valve arrangement shown is self-sealing when one of a higher internal pressure within the bladder 16 emanates from the external atmosphere. If, however, the internal pressure is applied via the opening 2 excess pressure, for example with the help of a hand air pump, applied, the sealing surfaces of the sealing cuff 8 stand out from the corresponding sealing surfaces of the Valve body to allow the passage of air. The sealing surfaces are also lifted from one another, when a mandrel or the like is inserted through the bore 1 and the valve opening 2 and against the pressure surface 9 is pressed.

The valve arrangement shown in FIG. 4 is intended for a sports ball. The leather sheath placed around the bladder 16 is also provided with an opening which is covered by the collar 3 after the valve arrangement has been installed, wherein the opening edge is seated in the annular gap 22

Fig. 5 shows a valve body which is constructed essentially the same as that of Fig. 1 with the only difference, that the retaining collar according to FIG. 1 is omitted: '. st and only one flange 4a is present.

Fig. 6 shows a valve body which is essentially re-

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the same as the one after Pig. 1 is constructed and has a retaining collar 3 and a puddle 4. The difference lies in the fact that the sleeve-shaped section 20iBine has ribs. For this, the outer surface of the cylindrical Section 20 inclined at an angle <to the axis of the valve body, through which a self-locking with the correspondingly inclined inner surface 12a of the retaining ring after Pig. 7 is reached. Pig's retaining ring. 7 shows in contrast to that according to Pig. 2 no grooves 12 on, but is otherwise the same in shape.

In the pig. 8 and 9 the parts of a valve assembly are shown, which only needs two parts. Of the in Pig. 8 has the same structure as that of Pig. 1 and differs from this only in that a sealing ring 34 extends downward from the end face 24 of the cylindrical section 21. Accordingly points the bottom part 14 of the retaining ring according to Pig. 9 has an upwardly extending sealing collar 7a. Sealing ring 34 and Sealing collar 7a are designed so that when the retaining ring and valve body are joined together, the sealing collar 7a lies around the sealing ring 34 in a sealing manner. The latter consists of a stiffer material than the sealing collar 7a. A base 35 with an upper pressure surface 9a is arranged within the sealing collar 7a. One on the pressure

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surface 9a exercised Druok, for example with the help of a Doms, presses the resilient base part 14 downwards and, in the assembled state, releases the valve body and Retaining ring the sealing insert of sealing collar 7a and Sealing ring 34. The retaining ring according to FIG. 9 is otherwise designed in the same way as that of FIG.

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Claims (1)

t * I "I I I I III · t - 18 - Claims t 1 · Valve arrangement for inflatable hollow bodies, in particular made of elastic materials with a valve body is inserted into an opening of the hollow body and fastened in a gas-tight manner, and a valve insert in the valve body is arranged, which is in communication with a valve opening in the valve body and both by a external gas pressure greater than the internal pressure in the hollow body and also through an insertable into the valve openinga Element can be brought into its opening division, thereby characterized in that the valve body is molded in one piece from thermoplastic plastic 2. Valve arrangement according to claim 1, characterized in that that the valve body is rotationally symmetrical and is fastened in the opening by gluing. 3. Valve arrangement according to claim 1, characterized in that that the valve body is rotationally symmetrical and with a sleeve-shaped section 21 in the neck-shaped opening protrudes, and that a retaining ring is provided which can be pushed onto the sleeve-shaped section is that the neck (33) of the opening is held between these parts. - 19 - 4. Valve arrangement according to claim 3, characterized in that the retaining ring has one or more on the inside Has projections (13) and that the sleeve-shaped portion (21) on the outside has a recess or Has undercut (26) into which the projection (13) can be snapped into place. 5. Valve arrangement according to claim 3 or 4, characterized in that the retaining ring on the inside or one has a plurality of circular circumferential grooves (12) and that the sleeve-shaped section (21) on the outside complementary shaped circular circumferential ribs (5) which can be brought into engagement with the grooves (12) are. 6. Valve arrangement according to one of claims 3 to 5, characterized in that the sleeve-shaped portion (21) and / or the retaining ring with the opening neck with the help of an adhesive with permanent or removable Bonding effect is connected. 7. Valve arrangement according to one of claims 3 to 6, characterized in that the retaining ring is clamped the sleeve-shaped section (21) sits. - 20 - • ♦ · • t · • * 4 ft * » - 20 - ^ 8. Valve arrangement according to one of claims 3 to 7, characterized characterized in that the retaining ring is more elastic than the valve body "or its sleeve-shaped section (21). 9. Valve arrangement according to one of claims 5 "to 8, characterized characterized in that at least part of the outer surface of the sleeve-shaped portion (21) is at an angle α is inclined to the axis of the valve body and that at least part of the inner surface of the retaining ring is shaped accordingly so that the latter sits self-locking on the sleeve-shaped section (2T), 10. Valve arrangement according to one of claims 1 to 9, thereby characterized in that the valve body has a plate-shaped, radially outwardly projecting flange (4) has, which rests against the outer skin (16) of the hollow body. 11. Valve arrangement according to claim 10 and one of the claims 3 to 9, characterized in that the retaining ring has a having radially outwardly extending puddle (11) which against the puddle (4) of the valve body comes lying, whereby the intermediate skin (16) of the hollow body is deflected and between these parts is held. - 21 - ■ 1 * I · 1 · - 21 - 12. Valve arrangement according to one of claims 1 to 11, characterized in that the valve body has a shark-shaped portion (1 a), the inner bore of which (1) tapers from the outside to the inside and serves to guide a pump mouthpiece or the like. 15. Valve arrangement according to claim 12, characterized in that that the inner bore (1) has a shoulder (25) at the inner end. 14. Valve arrangement according to one of claims 10 bia 13 »characterized in that the valve body has a retaining collar (3) which is spaced and approximately parallel runs to the splash (4) of the valve body. 15 · valve arrangement according to one of claims 3 to 14, characterized in that the valve insert is on a The bottom part (14) of the retaining ring is supported «, 16. Valve arrangement according to Claim 15 »characterized in that that the valve insert has an elastic sealing sleeve (8) which has a cylindrical section (21) protruding into the valve body near the inside, sealing from the outside surrounds, through which the valve opening (2) is guided. - 22 - 17. Valve arrangement according to claim 15 or 16, characterized in that the valve insert is non-positively or positively connected to the bottom part (14). 18. Valve arrangement according to claim 17 »characterized in that that the bottom part (14) has a pin (15) which projects into the interior of the retaining ring and which is inserted into a corresponding Recess (10) of the valve insert can be inserted 1st. 19 · Valve arrangement according to one of Claims 15 to 18, characterized in that the bottom part (14) is elastic is formed and biased towards the valve body. 20. Valve arrangement according to one of claims 15 to 19 »daduroh characterized in that the valve insert is one of the Has valve opening (2) opposite throaty pressure surface (9). 21. Valve arrangement according to one of claims 3 to 14, daduroh gok shows that the valve body is one in the sleeve-shaped section (20) protruding with this integrally formed sealing ring (34) and that the retaining ring has a bottom part (14), one of which soft elastic mansohette (7a) molded in one piece on this points upwards and sioh twisted around the Dlohtrlng (34) lays. - 23 - 22. Valve arrangement naoh claim (21, characterized in that that the sealing ring (34) is arranged concentrically to the valve opening (2). 23. Valve arrangement according to claim 21 or 22, characterized in that that the bottom part (H) within the sleeve (7a) has a projection (35) whose other Area as pressure area (9a) of the valve opening (2) opposite.