WO2005047754A1

WO2005047754A1 - Detachable adapter coupling

Info

Publication number: WO2005047754A1
Application number: PCT/EP2004/011529
Authority: WO
Inventors: Christian Freiseisen; Thomas Freiseisen
Original assignee: Christian Freiseisen; Thomas Freiseisen
Priority date: 2003-10-29
Filing date: 2004-10-14
Publication date: 2005-05-26
Also published as: DE10350511A1

Abstract

The invention relates to an adapter coupling to be slid onto the water-delivering end (4) of a water outlet (5), especially of a water faucet, thereby producing a water-tight connection with an approximately hood-shaped or bell-shaped sleeve (2). Said sleeve has a sleeve opening (6), pointing towards the water-delivering end and enclosed by an annular sleeve rim (21), said sleeve being adapted to receive the water-delivering end (4) in its sleeve interior (7). The adapter coupling is also provided with a water outlet (9), and an elastic seal (12). Said seal has a center opening (13), is located in the area of the sleeve opening (6) and bridges the sleeve opening (6). The water-delivering end (4) of the water outlet (5) can be introduced into the sleeve interior (7) through the center opening (13). The seal can be expanded by the inserted end (4) of the water outlet (5) and can sealingly rest on the peripheral surface of the water-delivering end (4). It seals the sleeve opening (6) and thus the sleeve interior (7) from the exterior in a fluid-tight manner. The adapter coupling also comprises a supporting unit (14) that forms an expandable funnel, is located axially outside the seal (12) and supports said seal (12). The adapter coupling of the invention is characterized in that the supporting unit (14) is composed of a first annular disk reinforcement (18) and a second annular disk reinforcement (22) that have respective outer, peripheral and continuous annular areas (19, 23), from which a plurality of tongues (20, 24) extends radially inwards and at an angle to the longitudinal axis (3). Said tongues are evenly distributed across the periphery of the annular area, and are linked with the annular areas (19, 23) on their base (25, 27). The tongues (20) of the first annular disk reinforcement (18), in the non-expanded condition of the seal (12), define a clearance (28) between them which substantially corresponds to the size and dimensions of the tongues (24) of the second annular disk reinforcement (22) in terms of size and dimension. The tongues (24) of the second annular disk reinforcement (22), in the non-expanded condition of the seal (12), define a clearance (29) between them which substantially corresponds to the size and dimensions of the tongues (20) of the first annular disk reinforcement (18) in terms of size and dimension. The annular disk reinforcements (18, 22) are designed in such a manner that in the mounted state the tongues (20) of the first annular disk reinforcement (18) come to rest in the clearance (29) between the tongues (24) of the second annular disk reinforcement (22) and at least substantially fill or cover the clearance (2) and vice versa and the tongues (20, 24) cooperate to form the expandable funnel.

Description

Title: Removable adapter coupling

The invention relates to an adapter coupling for pushing onto the water-emitting end of a water outlet, in particular a tap, with the production of a watertight connection with an approximately hood-shaped or bell-shaped socket, which has a socket opening, which faces towards the water-emitting end and is surrounded by an annular socket edge, in its Socket interior can receive the water-releasing end and which is provided with a water outlet, with an elastic seal which has a central opening and is arranged in the region of the socket opening and spans the socket opening and through the central opening of which the water-releasing end of the water outlet can be introduced into the socket interior. which can be widened by the inserted end of the water outlet and can seal against the outer jacket surface of the water-emitting end and which fluid-tightly seals the sleeve opening and thus the interior of the sleeve to the outside and a support unit which forms an expandable funnel and is arranged axially outside of the seal and supports this seal.

To establish a connection between a tap and a hose, it is known to provide the tap with an extension piece which has a standardized thread which can be screwed onto the likewise standardized thread of the water-emitting end of the water outlet of taps. A sleeve connected to the hose can be pushed onto this extension piece, which represents a kind of spigot end, to produce a pressure-tight and fluid-tight connection. To make such a connection, however, the faucet must be equipped with the specially designed adapter. In order to connect a faucet of any design, which is therefore not provided with a special extension piece, with a hose, US Pat. No. 3,515,413 teaches a coupling which is equipped with a sleeve which has a seal or sealing collar on the faucet side, which extends from an annular base body in the direction of entry of the water outlet of the tap and which is also inclined towards the center. This known coupling can be pushed onto a water pipe, which expands the sealing sleeve. Similar devices are described in US-A 3 844 586, US-A 5 743 570, US-A 2 688 499 and US-A 2 094 889 and DE-GM 1 826 455. These couplings have in common that they are not are able to seal against the water outlet of a tap and / or not withstand the prevailing water pressures.

Another such coupling or adapter coupling, which can be pushed onto any taps, is described in PCT / EP99 / 05680 (WO 00/08371). In one of the embodiments of this adapter coupling described there, the sealing sleeve is supported by a reinforcement unit which is located between two layers of this sealing sleeve or is virtually embedded in it.

An improved sealing unit for such an adapter coupling is disclosed in PCT / EP00 / 11642 (WO 01/38776). This sealing unit not only has a reinforcement unit of the type described, but is also provided with a sliding funnel which is arranged on the outside of the sealing collar or the seal and thus points towards the water-emitting end of a tap, etc. This sliding funnel consists of a radially outer circumferential, continuous ring, from which a plurality of tongues articulated thereon extend radially inward to the central opening of the sealing sleeve.

A further improved adapter coupling of the type in question is described in DE-A 101 57 445.2. The latter clutch is with a funnel unit, which is formed from several separate, the sealing supporting elongated reinforcing ribs. These reinforcing ribs are arranged next to one another on the circumference of the sleeve edge in such a way that they together form the funnel unit.

To produce the latter adapter coupling, it is necessary to assemble a large number of individual parts.

Starting from this prior art, it is an object of the present invention to provide a more simply constructed, easily assembled and functionally reliable adapter coupling. This problem is solved by the adapter coupling according to the teaching of the claims.

In the adapter coupling according to the invention, the support unit is constructed from only two elements, namely from a first washer reinforcement and a second washer reinforcement. Both ring disk reinforcements have an outer, circumferential and continuous ring area, from which a plurality of tongues, distributed uniformly over the circumference and articulated at their base on the ring area, extend radially inwards and obliquely to the longitudinal axis. Together, these tongues form the expandable funnel. In other words, the support unit performing a funnel function tapers inwards from the side toward the interior of the socket and thus centers the water-emitting end of the water outlet when this end is inserted into the interior of the socket.

In the unexpanded state of the seal, the tongues of the first annular disk reinforcement define a free space between them or leave a space free, which in terms of size and dimensions at least essentially corresponds to the size and dimensions of the tongues of the second annular disk reinforcement. The tongues of the second washer reinforcement also define a space between them when the seal is not expanded or leave one Free space which at least essentially corresponds in size and dimensions to the size and dimensions of the tongues of the first annular disk reinforcement.

The annular disk reinforcements are designed in such a way that, based on the unexpanded state, the tongues of the first annular disk reinforcement lie in the space between the tongues of the second annular disk reinforcement and at least essentially fill or cover this free space. This also applies vice versa. Thus, the washer reinforcements are also designed such that, in relation to the unexpanded state, the tongues of the second washer reinforcement come into contact in the space between the tongues of the first washer reinforcement and at least substantially fill or cover this free space.

The tongues of both ring disk reinforcements thus form a kind of flat ring. The tongues of both ring washer reinforcements are in particular in a surface on which the seal is supported. If it is mentioned in the context of the present documents that the free space corresponds in size and dimensions to the size and dimensions of the tongues, then this information relates to this flat ring or this ring surface formed by the tongues of the two ring disk reinforcements ,

According to a preferred embodiment, the tongues and free spaces of both ring disk reinforcements are approximately the same. This means that the surface area is the same. Furthermore, the number of tongues of an annular disk reinforcement preferably corresponds to the number of free spaces in between.

Furthermore, the tongues are preferably trapezoidal in plan view, the side edges of the tongues forming the side edges of the trapezoid. The parallel edges of the trapezoid are defined by the

Base and the radially inner end of the tongues formed, the Base is longer than the radially inner end. In other words, the tabs taper radially inward from the base. The same applies to the free spaces between the tongues.

When the water-emitting end is pushed into the interior of the sleeve, the funnel formed by the tongues expands, in which the tongues are pivoted inward about their base. This naturally increases the space between the tongues. This creates areas in which the seal is no longer supported by the tongues of the support unit.

In order to cover the latter areas, the tongues are preferably equipped on one side with a wing, the width of which preferably increases from radially outside to radially inside. When the seal is not expanded, the wings of the tongues of the first annular disk reinforcement lie axially on the inside of the tongues of the second annular disk reinforcement. The same applies to the wings of the tongues of the second washer reinforcement, which rest on the tongues of the first washer reinforcement.

The tongues preferably have at their radially inner end or region two radially spaced apart, axially inwardly extending extensions which form a U-shaped groove between them. In this groove there is a sealing ring that surrounds the central opening of the seal. The seal preferably has approximately the shape of a round plate. In the center of the plate base, the central opening is preferably formed, which is enclosed by the sealing ring mentioned. The side wall of the plate runs obliquely to the longitudinal axis and comes into contact with the tongues or the wings described. The plate rim is sealed between the edge of the sleeve and the ring cover.

According to a preferred embodiment, the second, axially inner annular disk reinforcement is on the radially outer extension Flap process articulated, preferably in the form of a film hinge. This tab extension can be inserted into a pocket that is attached to the seal axially on the outside.

The adapter coupling according to the invention is explained in more detail below with reference to the drawings below, which represent a preferred embodiment. From the figures show:

1 shows a side view of an adapter coupling according to the invention, which is pushed onto the water-releasing end of a water outlet of a tap, FIGS. 2 and 3 show an exploded view of the adapter coupling shown in FIG. 1,

FIG. 4 shows a hood-shaped or bell-shaped sleeve in a side view,

Figure 5 is a sectional view of the sleeve shown in Figure 4 along line A-A.

Figure 6 is a plan view of the sleeve shown in Figure 4 from below.

7 shows a side view of a ring cover which can be screwed onto the sleeve of the adapter coupling, FIG. 8 shows a sectional view through the ring cover shown in FIG. 7,

FIG. 9 shows a perspective view of the ring cover shown in FIGS. 7 and 8 inward,

FIG. 10 shows a perspective view of the ring cover 30 from the outside,

FIG. 11 shows a side view of an adjusting ring, FIG. 12 shows a sectional view through the adjusting ring shown in FIG. 11,

FIG. 13 is a top view from the inside, and thus from the inside of the sleeve, of a first annular disk reinforcement arranged axially on the outside,

FIG. 14 shows a top view of the annular disk reinforcement shown in FIG. 13 from the outside,

FIG. 15 shows a perspective view of the annular disk reinforcement shown in FIG. 13,

FIG. 16 shows a sectional view of the annular disk reinforcement shown in FIGS. 13-15,

FIG. 17 shows detail A from FIG. 16,

FIG. 18 shows a top view from the inside axially of a second annular disk reinforcement,

FIG. 19 shows the second annular disk reinforcement shown in FIG. 18 in a perspective view,

FIG. 20 shows a sectional view through the second annular disk reinforcement shown in FIG. 18,

FIG. 21 shows detail I of FIG. 20,

FIG. 22 shows a longitudinal sectional view through the adapter coupling shown in FIGS. 2 and 3 in the assembled state, but without an inserted seal,

FIG. 23 shows detail B according to FIG. 22,

FIG. 24 shows a top view of a seal from the inside,

FIG. 25 shows the seal shown in FIG. 24 in a perspective view, Figure 26 is a sectional view of the seal shown in Figure 24 along line AB

FIG. 27 shows a sectional view through the support unit of the adapter coupling according to the invention with built-in seal along the line A-A of FIG. 24,

FIG. 28 shows a front view of a securing bracket,

FIG. 29 shows a side view of the securing bracket shown in FIG. 28,

FIG. 30 shows a top view of the securing bracket shown in FIG. 28,

FIG. 31 shows a side view of an insert 38,

FIG. 32 is a top view of the insert shown in FIG. 31,

FIG. 33 is a perspective view of the insert shown in FIG. 31,

FIG. 34 shows a section along the line A-A of FIG. 32,

FIG. 35 is a perspective view of a conical cylinder,

FIG. 36 is a longitudinal sectional view of the conical cylinder shown in FIG. 35,

FIG. 37 shows a side view of a valve insert,

FIG. 38 shows a sectional view along the line A-A of the valve insert shown in FIG. 37,

FIG. 39 is a bottom view of the valve insert shown in FIG. 37, FIG. 40 is a top view of a support ring,

FIG. 41 shows a section along line A-A of the support ring of FIG. 40,

FIG. 42 shows a section along the line B-B in FIG. 40 and FIG. 43 shows a section along the line D-D in FIG. 40.

The adapter coupling 1 according to the invention has, according to FIG. 1, an approximately hood-shaped or bell-shaped sleeve 2, which has a water outlet 9 in the form of an outlet connection 16 provided with an external thread 15 and into which the interior 7 of the sleeve has the water-emitting end 4 of a water outlet 5 inserted or inserted is. The actual water tap or its valve is not shown in FIG. 1.

At the outlet 16, a conventional water hose can be connected with a threaded cap or the like in a manner known per se.

The outlet opening 16 is located axially opposite the sleeve opening 6, which is bordered by the peripheral edge 21, see FIG. 5. Outside on the sleeve 2 there is an external thread 17 at the end of the sleeve opening, onto which an annular cover 30 with an internal thread 31 can be screwed. The ring cover 30 (FIGS. 7-10) has an axial section 32 and a radial section 33 which surrounds a central opening 105 through which the water outlet 5 can be inserted. Said internal thread 31 is formed on the inner lateral surface of the axial section 32 of the ring cover 30.

The radial section 33 of the ring cover 30 merges radially on the inside into a cylindrical extension 34 which extends axially inwards and outwards. If the present documents refer to the axial direction, this means in the direction of or parallel to the axis 3 of the sleeve 2.

In the axially extending cylindrical extension 34 of the ring cover 30, an adjusting ring 40 with a cylindrical portion 41 engages, on the outer surface of which an external thread 42 is arranged, which has a thread 35 (see FIGS. 8, 9 and 10) on the inner surface of the cylindrical extension 34 cooperates. This adjusting ring 40 also has a central opening 39.

Axially on the outside, the cylindrical section 41 of the adjusting ring 40 merges into a radially extending knurled flange 43. If the user grasps this flange 43 and rotates the adjusting ring 40, then this shifts in the axial direction and thus in the direction of the axis 3, depending on the direction of rotation, axially inwards or outwards.

An elastic seal 12, which is described in more detail below, is used to seal the interior of the sleeve to the outside and to the inserted water outlet 5.

In order to prevent this seal 12 from being pressed axially outwards by the water pressure prevailing in the socket interior 7, a support unit 14 is used, which is constructed from a first washer reinforcement 18 and a second washer reinforcement 22, see FIG. 2.

The axially outer first annular disk reinforcement 18 is shown in more detail in FIGS. 13 to 16. This annular disk reinforcement 18 has a circumferential, continuous ring area 19, from which trapezoidal tongues 20 extend radially inward when viewed from above. They are articulated to the ring area 19 at their base 36 with the aid of a film hinge. The tongues 20 are evenly spaced apart from one another on the circumference. Between these tongues 20 will a free space 10 is defined or a space 10 is left blank. Thus, the free spaces 10 are arranged evenly distributed in the circumferential direction.

The tongues 20 have at their radially inner end two radially spaced extensions 44, 45 which extend axially inward in the direction of the axis 3 and which form a U-shaped groove 46 between them. Compare in particular Figure 17.

The tongues 20 have on one of their side edges a wing 47 which is articulated to the associated tongue 20 and whose width increases from radially outside to radially inside.

The tongues 20 are not connected directly to the ring area 19 but to the ring area 19 via an approximately axially extending connecting area 48, which will be discussed in more detail below.

The second element of the support unit 14 is the second annular disk reinforcement 22 shown in greater detail in FIGS. 18-21, which is constructed similarly to the first annular disk reinforcement 18 described above. Thus, the second annular disk reinforcement 22 also has a circumferential ring region 23, which a plurality of tongues 24 evenly distributed over the circumference extend radially inward. Clearances 1 1 are formed between these tongues 24. The tongues 24 are trapezoidal in plan view and articulated at their base on the circumferential ring region 23. They have a wing 49 on one of their side edges, which is configured approximately the same as the wing 47 of the tongues 20.

The tongues 24 as well as the tongues 20 have at their radially inner end 37 two radially spaced apart, axially inwardly extending extensions 50 and 51, which form a U-shaped groove 52 between them, compare in particular Figure 21. The radial outer extension 50 is movably connected to a tab extension 53 via a film hinge. The tongues 20 of the first annular disk reinforcement are reinforced on their axially outer surface with radially extending ribs 54, compare in particular FIG. 14. The tongues 24 of the second annular disk reinforcement 22 can also have such ribs 54, compare FIG. 2 and there the second Washer reinforcement 22, as well as Figure 21.

The circumferential ring region 19 of the first annular disk reinforcement forms a U-shaped groove 55 (FIG. 16), the base of which points axially outwards and which is thus open axially inwards. The circumferential ring region 23 of the second ring disk reinforcement 22 is designed such that it can be inserted as positively as possible into this groove 55 of the first ring disk reinforcement; this state is shown in FIG. 22, in which the first annular disk reinforcement 18 and the second annular disk reinforcement 22 are virtually set one inside the other.

When the first annular disk reinforcement 18 is inserted into the second annular disk reinforcement 23 or when it is placed one against the other, the tongues 20 and 24 come to lie approximately at the same axial height or level. The tongues 20 fill the free space 11 between the tongues 24, while the tongues 24 fill the free space 10 between the tongues 20. So that the tongues 20 and 24 are arranged at approximately the same axial height, the tongues 20 of the first annular disk reinforcement 18 are connected to the cylindrical extension 34 described above with the associated ring region 19. The tongues 20 and 24 thus form an almost continuous ring area for contact with the seal 12.

So that the wings 47 of the first annular disk reinforcement 18 come to lie on the axially inner surface of the wings 24 of the second annular disk reinforcement 22, it is necessary to widen the tongues 20 and 24 of the two annular disk reinforcements 18 and 19 so that the free space 11 between the tongues 24 so far (seen in the circumferential direction) that the wings 47 of the axially outer first annular disk reinforcement 18 through the free space 11 and can thus swing axially inward between two adjacent tongues 24 of the second annular disk reinforcement 22. When the tongues 20, 24 are folded back, the wings 47 come to lie axially on the inside on the tongues 24 of the second annular disk reinforcement 22.

In the unexpanded state, the free spaces 10, 11 of an annular disk reinforcement 18, 22 are approximately filled by the tongues 20, 24 of the respective other annular disk reinforcement 18, 22. When the water-emitting end 4 is inserted, these tongues are pivoted outward, widening the central opening 13 of the seal. Of course, this also increases the free spaces 11 and 10 between the associated tongues. This expanded free space is now covered by the wings 47 and 49, so that an essentially continuous complete contact surface or contact surface of the support unit 14 is still available for the seal 12 and the elastic sealing material cannot be pressed outward at any point ,

In order to align the annular disk reinforcements 18, 22 with one another, they are provided with bores 56 and 57, which are aligned when assembled. To fasten these two annular disk reinforcements 18, 22, conical pins 59 are pushed from the outside axially through bores 58 in the radial section 33 and connect the two annular disk reinforcements 18, 22 to the ring cover 30 by frictional engagement. These pins 59 have a head, so that they cannot be pushed through the bores 58, but rather ensure a connection that can be made by plugging between the ring disk reinforcements 18, 22 and the ring cover 30.

Two adjacent pins 54 can be connected to a ring-shaped flat connection area 60 (FIG. 2). The elastic seal 12 shown in FIG. 24 consists of an elastic material, e.g. B. a rubber material or a silicone material, and has a central opening 13 through which the water-emitting end 4 of a water outlet 5 can be inserted. This opening 13 is enclosed (FIG. 26) by a sealing ring 26, around which a further sealing ring 61 connected radially on the outside rotates. Between the sealing ring 26 and the further sealing ring 61 (FIG. 26) there is a circumferential, U-shaped groove 62 which is open to the outside and in which the radially inner extensions 50 and 51 of the tongues 20 and 24 come to rest. The seal 12 is otherwise in one piece; the elements mentioned here, e.g. B. sealing rings 26, 61, etc. serve to explain sections and areas of the seal 12th

Radially outside of the further sealing ring 61 there is a further U-shaped groove 63 which is open to the outside and in which the radially outer extensions 44, 50 of the tongues 20, 24 come to rest.

The projections 50 of the second washer reinforcement 22 have - as shown above - a tab extension which is folded radially outwards and comes to rest in pockets 64 (FIGS. 24 and 26) which are formed on the seal 12. These pockets 64 are open radially inwards and are otherwise closed.

The assembled support unit 14 with built-in seal 12 is shown again in section in FIG. 27.

The central opening 13 of the seal 12, which has approximately the shape of a round plate, forms, together with the sealing ring 26 and the further sealing ring 61 described above, approximately the plate bottom 65, which merges into a side wall 66 running obliquely to the longitudinal axis 3. The plate edge 67 is pressed between the edge 21 of the sleeve 2 and the ring area 23 of the second washer reinforcement 22 (see FIG. 27). For this purpose, the ring area 23 has a radially outer circumferential, radially outwardly extending flange 68 which axially on the inside against a shoulder 69 on the ring cover 30 (FIG. 27) comes to rest and is pressed against it, see also Figure 23.

When the adjusting ring 40 is turned, its cylindrical section 41 comes into contact with the tongues 20, 24 of the support unit 14, slides along them and pushes them to the side so that they are pivoted outwards. The tongues 20, 24 take the seal with and widen the central opening 13 and thus the sealing ring 26, so that the water-emitting end 4 can be pushed into the sleeve interior 7 without coming into contact with the seal 12. The adjusting ring 40 is then turned out, so that the sealing ring 26 contracts again and contacts the outer lateral surface of the water outlet 50 with a fluid-tight seal. If the interior of the sleeve is then filled with water and the seal 12 is pressurized, then the seal 12 cannot be pushed outwards due to the support on the support unit 14 or the tongues 20 and 24 and the associated wings 47, 49, because this unit forms a kind of inward-curved coupling.

To remove the adapter coupling 1, the adjusting ring 40 is then screwed back in, so that the water-emitting end 4 of the water outlet 5 can be pulled out without difficulty and without damaging the seal 12 and in particular the sealing ring 26.

Inside the sleeve interior 7 there is a U-shaped securing bracket 8 made of a flat band-like material with a rectangular material cross section. The two free ends 70, 71 of the securing bracket 8 are fastened to the sleeve 2 on the side facing away from the sleeve opening 6. The base 72 of this U-shape lies in front of the central opening 13 of the seal 12. On this base 72 there is arranged a sliding surface 73 which runs obliquely to the longitudinal axis 3 and which represents a kind of vault cutout. When the water-emitting end 4 is inserted, it comes into contact with the sliding surface 73 and pivots the securing bracket 8 to the side. This is important if the water-releasing end 4 is equipped with a aerator 74 (FIG. 1). This aerator 74 is pushed axially inwards over the base 72 of the U-shape of the securing bracket 8. Then the sleeve 2 is rotated with respect to the water-emitting end 4. If the water-emitting end 4 is then somehow pulled out or pushed out, the aerator 74 hooks on the inside at the base 72. To pull out the water-emitting end

4, it is then only necessary to twist the sleeve 2 relative to the water-emitting end 4. In order to facilitate this process, the sleeve 2 is provided on the outside with a marking (not shown in the figures) which indicates to the user how he should push the sleeve 2 onto the water-emitting end 4 with the aerator 74.

The free ends 70 and 71 of the securing bracket 8 each have two free sections 75, 76. The axially inner free section 75 has a recess 77 which can be hung on an insert 38 via a projection 78. This insert 38 is fastened in the socket interior 7 to the outlet connection 16. The insert 38 has an approximately disk-shaped element 79, which rests with its edge against the inner wall of the sleeve 2 (FIG. 22) and is penetrated with numerous bores 80. The disk-shaped element 79 thus extends approximately transversely to the longitudinal axis 3. From this disk-shaped element 79, two crosswise flanks 81 extend in the axial direction, which merge towards the outlet connection 16 into axially extending claws 82, which radially extend at their free end have excellent paragraph 83 on the outside.

The insert 38 is pushed into the connecting piece 16 from the interior of the sleeve 7. The inner contour of the connecting piece 16 (figures

5 and 6) is designed such that the opening 84 there has a plurality of radially outwardly extending recesses 85 through which the claws 82 can be pushed outwards. These claws 82 represent passive claws, because they are dimensioned and designed in such a way that they move axially with them outwardly projecting paragraphs 83 do not engage behind the border 8 of the opening 84.

In order to fix the insert 38, a conical cylinder 86 is pushed in from the outside, which presses the claws 82 radially outward, so that they become active claws and engage behind the border 8. This cylinder 86 has a circumferential flange 87 which extends radially outwards and prevents this cylinder 86 from being pushed too far into the sleeve 2. In this way, the insert 38 can be permanently fixed by simply inserting the cylinder 86 with the sleeve 2 and can also be released again when the cylinder 86 is pulled out again.

The conical cylinder 86 represents a hollow cylinder and has a passage 90 through which water can flow out of the interior 7 of the sleeve 2. The flange 87 is arranged on the axially outer edge of this cylinder 86. The cylinder 86 thus represents a type of cylinder tube.

Provided on the inner wall of the cylinder 86 is a radially inner circumferential projection 91 which has a central bore 92 which widens outwards in the direction of flow of the water and forms a valve seat.

The valve insert 89 shown in FIGS. 37-39 can be inserted into the bore 92 from the outside. This valve insert 89 has a disk-shaped base 93, the outer edge 94 of which is chamfered, so that the valve insert 89 comes to rest with this edge 94 on the outwardly widening edge of the bore 92 and closes the passage 90 or the bore 92.

Extend from the disc-shaped base 93 to the

Sleeve interior 7 out four webs 95 in the axial direction, which at their free

End have a radially projecting shoulder 96. This valve insert 89 is inserted into the cylinder 86. there the shoulders 96 of the webs 95 engage behind the edge of the circumferential projection 91 of the cylinder 86.

When pressurized, the water in the sleeve interior 7 presses the valve insert 89 outwards until the shoulders 96 come into contact with the projection 91. The valve insert 89 is then held in this position. The water can reach the outside through the spaces 97 between the webs 95. Should the water flow back once, the disk-shaped base 94 is pressed onto the projection 91 and closes the bore 92. The cylinder 86, in combination with the valve insert 89, thus represents a check valve.

All parts from which the adapter coupling 1 according to the invention is constructed can be manufactured by injection molding. These parts are therefore preferably made of plastic. Only the seal 12 consists of an elastic rubber or silicone material. The adapter coupling can be completely manufactured by inserting and pushing together the parts and elements that make it up. It is not necessary to generate any screw connections or other connections.

So that the securing bracket 8 can also be permanently attached to the insert 38 only by plugging or hanging in, the securing bracket 8 is hooked onto the projection 78 on the insert 38 with the recess 77 as described above. For this purpose, the safety bracket 8 with the free section 75 is inserted through a continuous recess 98 in the disc-shaped element 79 (see FIG. 33) and hung over the projection 78.

The disk-shaped element 79 represents a type of pre-filter disk. A support ring 99, which is shown in more detail in FIGS. 40, 41, 42 and 43, lies on the disk interior 79 on the disk-shaped element 79. This support ring 99 has two bars 100, 101 which form a cross. Radially outside of the bars 100 there is a tab 102 with a recess 103, which corresponds approximately to the recess 98 in the disc-shaped element 79 and is flush therewith. The free section 75 thus also projects through this recess 103.

The free section 76 arranged closer to the base 72 of the securing bracket 8 is curved towards the longitudinal axis 3 and comes with its free end to lie in a groove 104 which is formed in the beam 100 of the support ring 99. The free sections 75 and 76 of the securing bracket 8 are designed such that the free section 76 resiliently presses against the bottom of the groove 104 in the support ring 99 when the recess 77 is suspended. As a result, the curved free section 76 exerts a force in the direction of the sleeve opening 6 and holds the securing bracket 8 in the desired position.

LIST OF REFERENCE NUMBERS

Claims

Title: Removable adapter coupling

1. Adapter coupling for pushing onto the water-emitting end (4) of a water outlet (5), in particular a tap, with the production of a watertight connection with an approximately hood-shaped or bell-shaped sleeve (2), which has an annular sleeve edge pointing towards the water-emitting end (21) has a socket opening (6) which can accommodate the water-emitting end (4) in its socket interior (7) and which is provided with a water outlet (9) with a central opening (13) in the area of the socket opening (6) arranged, the sleeve opening (6) spanning, elastic seal (12), through the central opening (13) the water-emitting end (4) of the water outlet (5) can be inserted into the sleeve interior (7), which is introduced by the End (4) of the water outlet (5) can be widened and can seal against the outer surface of the water-emitting end (4) and which the sleeve opening (6 ) and thus seals the socket interior (7) to the outside in a fluid-tight manner, and with a support unit (14) which forms an expandable funnel and is arranged axially on the outside of the seal (12) and supports this seal (12), thereby characterized, that the support unit (14) is constructed from a first annular disk reinforcement (18) and a second annular disk reinforcement (22), each of which has an outer, circumferential and continuous ring area (19, 23), of which several are distributed uniformly on the circumference, at their base (25, 27) on the ring area (19, 23) hinged tongues (20, 24) extend radially inwards and obliquely to the longitudinal axis (3), the tongues (20) of the first washer reinforcement (18) in the unexpanded state the seal (12) has a space between them (28), which, in terms of size and dimensions, corresponds at least substantially to the size and dimensions of the tongues (24) of the second annular disk reinforcement (22), the tongues (24) of the second annular disk reinforcement (22) in the non-expanded state the seal (12) defines between them a free space (29), the size and dimensions of which correspond at least substantially to the size and dimensions of the tongues (20) of the first washer reinforcement (18), the washer reinforcements (18, 22) are designed such that in the installed, non-expanded state, the tongues (20) of the first annular disk reinforcement (18) come to lie in the free space (29) between the tongues (24) of the second annular disk reinforcement (22) and this free space (29) at least essentially fill or cover and vice versa and 15 the tongues (20, 24) together form the expandable funnel.

2. Adapter coupling according to claim 1, characterized in that the tongues (20, 24) and free spaces (10, 11) of the two ring disk reinforcements are approximately the same.

203. Adapter coupling according to claim 1 or 2, characterized in that the tongues (20, 24) are trapezoidal in supervision.

4. Adapter coupling according to one of the preceding claims, characterized in that

25 that the tongues (20, 24) are equipped on one side with a wing (47, 49).

5. Adapter coupling according to claim 4, characterized in that the width of the wings (47, 49) increases radially inwards.

6. Adapter coupling according to one of the preceding claims, characterized in that the tongues (20, 24) have at their radially inner end (36, 37) two radially spaced apart, axially inwardly extending extensions (44, 45; 50, 51) which form a U-shaped groove (46, 52) between them.

7. Adapter coupling according to claim 6, characterized in that a tab extension (53) is articulated on the radially outer extension (50) of the second, axially inner annular disk reinforcement 22), in particular with the aid of a film hinge.

8. Adapter coupling according to claim 7, characterized in that the seal (12) axially outside has at least one pocket (64) into which the tab extension (53) can be inserted.

9. Adapter coupling according to one of the preceding claims, characterized in that the seal (12) has approximately the shape of a round plate, the central opening (13) being formed in the center of the plate base (65) The side wall (66) of the plate extends obliquely to the longitudinal axis (3) and is used for bearing against the tongues (20, 24) and the plate edge (67) is pressed between the edge (21) of the sleeve (2) and the ring cover (30) in a sealing manner is.

10. Adapter coupling according to claim 9, characterized in that the central opening (13) of the seal (12) is bordered by a sealing ring (26),

11. Adapter coupling according to one of the preceding claims, characterized in that a U-shaped securing bracket (8) is made in the sleeve interior (7) a flat band-like material with a rectangular material cross section is attached, the two free ends (70, 71) of the U-shape opposite the sleeve opening (6) are attached to the sleeve (2), the base (72) of the U-shape in front of the central one Opening (13) of the seal (12) comes to rest and on the base (72) a slanted surface to the longitudinal axis (3) (73) is arranged, which is in particular approximately semi-dome-shaped.

12. Adapter coupling according to one of the preceding claims, characterized in that a check valve is attached in the water outlet (9).