Sanitary outlet piece, sanitary fitting and use of an outlet piece
10968613 · 2021-04-06
Assignee
Inventors
Cpc classification
E03C1/0404
FIXED CONSTRUCTIONS
Y10T137/9464
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
International classification
Abstract
For a sanitary outlet piece (1), it is proposed to have at least two hose connection points (3, 4, 5), which are laterally offset to each other, formed on an inlet side (6) and are guided in the sanitary outlet piece (1) separate from one another from the inlet side (2) to an outlet side (6) of the sanitary outlet piece (1).
Claims
1. A sanitary outlet piece (1) for inserting into a fitting outlet, the sanitary outlet piece comprising a basic body (33) configured for insertion in a discharge opening of a sanitary fitting, the basic body including an inlet side (2), an outlet side (6) and more than two hose connection points (3, 4, 5) that are formed spaced apart from one another on the inlet side (2) and are each guided to the outlet side (6), a holding plate (57) having at least three recesses (58, 59, 60) corresponding to the hose connection points (3, 4, 5), one hose (21, 22, 23) being insertable into a corresponding one of the hose connection points by an insertion movement oriented transversely with respect to a longitudinal direction of the respective hose (21, 22, 23), resulting in a plug-in system arrangement of the hoses which are connectable to the hose connection points (3, 4, 5) without being screwed in, wherein the hose connection points (3, 4, 5) are guided to the outlet side (6) at a fitting discharge end that discharges to atmosphere separately from one another.
2. The sanitary outlet piece as claimed in claim 1, further comprising at least one housing edge (50, 51) arranged between the inlet side (2) and the outlet side (6).
3. The sanitary outlet piece as claimed in claim 1, wherein the inlet side (2) and the outlet side (6) are arranged spaced apart from each other.
4. The sanitary outlet piece (1) as claimed in claim 1, wherein the inlet side (2) and the outlet side (6) enclose an angle.
5. The sanitary outlet piece as claimed in claim 1, wherein the hose connection points (3, 4, 5) and the outlet side (6) are formed at mutually opposite ends (7, 8) of the outlet piece (1).
6. The sanitary outlet piece as claimed in claim 5, further comprising outer wall (10) formed between the opposite ends (7, 8) of the outlet piece (1).
7. The sanitary outlet piece as claimed in claim 6, wherein individual or all of the hose connection points (3, 4, 5) are formed on the outer wall (10).
8. A sanitary outlet piece (1) for inserting into a fitting outlet, the sanitary outlet piece comprising a basic body (33) configured for insertion in a discharge opening of a sanitary fitting, the basic body including an inlet side (2), an outlet side (6) and more than two hose connection points (3, 4, 5) that are formed spaced apart from one another on the inlet side (2) and are each guided to the outlet side (6), a holding plate (57) having at least three recesses (58, 59, 60) corresponding to the hose connection points (3, 4, 5), one hose (21, 22, 23) being insertable into a corresponding one of the hose connection points by an insertion movement oriented transversely with respect to a longitudinal direction of the respective hose (21, 22, 23), resulting in a plug-in system arrangement of the hoses which are connectable to the hose connection points (3, 4, 5) without being screwed in, wherein at least one of the hose connection points (3, 4, 5) is guided to the outlet side (6) at a fitting discharge end to atmosphere in at least one of a valve-free or junction-free manner.
9. The sanitary outlet piece as claimed in claim 1, wherein water outlets (11, 12, 13) which are separated from one another are formed on the outlet side (6) and are each connected to one of the hose connection points (3, 4, 5).
10. The sanitary outlet piece as claimed in claim 1, wherein at least one of the hose connection points (3, 4, 5) has a different opening diameter (17, 18) than remaining ones of the hose connection points (3, 4, 5).
11. A sanitary outlet piece (1) for inserting into a fitting outlet, the sanitary outlet piece comprising a basic body (33) with an inlet side (2), an outlet side (6) and more than two hose connection points (3, 4, 5) that are formed spaced apart from one another on the inlet side (2) and are each guided to the outlet side (6), a holding plate (57) having at least three recesses (58, 59, 60) corresponding to the hose connection points (3, 4, 5), one hose (21, 22, 23) being insertable into a corresponding one of the hose connection points by an insertion movement oriented transversely with respect to a longitudinal direction of the respective hose (21, 22, 23), resulting in a plug-in system arrangement of the hoses which are connectable to the hose connection points (3, 4, 5) without being screwed in, and an internal thread (19) into which a connecting piece (20) of the outlet piece (1) is screwable, insertable or fixable formed at least at one of the hose connection points (3, 4, 5).
12. The sanitary outlet piece as claimed in claim 1, wherein the holding plate (57) is adapted to be engaged over on both sides by a holding groove (61) formed on the hose (21, 22, 23) or on one side by a holding edge (63) formed on the hose (21, 22, 23).
13. The sanitary outlet piece as claimed in claim 12, further comprising a holding stop (62) formed on an outlet element (42) fitted onto the basic body (33) on the outflow side, at which holding stop the basic body (33) is pressable against the holding plate (57), which is supported from outside.
14. The sanitary outlet piece as claimed in claim 13, wherein the basic body (33) is pressable with a screw sleeve (41) against a holding plate (57), which is supported from the outside.
15. The sanitary outlet piece as claimed in claim 14, wherein the basic body (33) is pressable via the holding stop (62) against the outlet element (42) which is fitted on the basic body (33) on the outflow side.
16. The sanitary outlet piece as claimed in claim 15, wherein the screw sleeve (41) has a thread for screwing to a mating thread provided on a fitting outlet (38).
17. The sanitary outlet piece as claimed in claim 1, wherein at least one of the hose connection points (3, 4, 5) is guided via a distribution chamber (26, 28) to a plurality of outlet openings (25, 27) of the outlet piece (1).
18. The sanitary outlet piece as claimed in claim 17, wherein the outlet openings (25, 27) are formed in at least one groove base (29, 31) of an outwardly open annular groove (30, 32), and the hose connection points (3, 4, 5) are formed on a first part (34) of the basic body (33) and the outlet side (6) is formed on a second part (35) of the basic body (33).
19. The sanitary outlet piece as claimed in claim 18, wherein the first part (34) and the second part (35) are connected to each other in at least one of an integrally bonded, form-fitting, or force-fitting manner.
20. The sanitary outlet piece as claimed in claim 1, further comprising a jet regulator or a jet former connected downstream of at least one of the hose connection points (3, 4, 5).
21. The sanitary outlet piece as claimed in claim 1, wherein at least two of the at least three hose connection points (3, 4, 5) are guided separately to a common outlet nozzle (56).
22. A sanitary fitting (37), comprising: a fitting outlet, a sanitary outlet piece (1) as claimed in claim 1 inserted into the fitting outlet (38), and at least one of said hose connection points (3, 4, 5) is connected to an output of at least one of a metering or mixing device (43).
23. The sanitary fitting (37) as claimed in claim 22, wherein the outlet piece (1) is held by an outlet element (42).
24. The sanitary fitting as claimed in claim 23, wherein the outlet piece (1) is an outlet sieve or outlet rectifier or a jet regulator or jet former.
25. The sanitary fitting as claimed in claim 22, further comprising a respective hose (21, 22, 23) which has a holding groove (61) arranged on each of said hose connecting points (3, 4, 5), and the holding plate (57) includes a recess (58, 59, 60) that engages laterally in the holding groove (61) in order to fix the hose (21, 22, 23) in a longitudinal direction thereof on the hose connection point (3, 4, 5).
26. The sanitary fitting as claimed in claim 22, wherein the inlet side (2) and the outlet side (6) of the outlet piece (1) are formed on a single-piece basic body (33), a jet former cartridge (64) connected downstream of the basic body (33) and lies with a supporting edge (66) against the basic body (33), and a connecting piece (65) of the jet former cartridge (64) projects over the supporting edge (66) and engages in a corresponding connecting-piece receptacle (67) on the basic body (33).
27. The sanitary fitting as claimed in claim 26, wherein the connecting piece (65) of the jet former cartridge (64) engages in a sealing manner in the corresponding connecting-piece receptacle (67) on the basic body (33).
28. A sanitary outlet piece (1) for inserting into a fitting outlet, the sanitary outlet piece comprising a basic body (33) with an inlet side (2), an outlet side (6) and more than two hose connection points (3, 4, 5) that are formed spaced apart from one another on the inlet side (2) and are each guided to the outlet side (6), a holding plate (57) having at least three recesses (58, 59, 60) corresponding to the hose connection points (3, 4, 5), one hose (21, 22, 23) being insertable into a corresponding one of the hose connection points by an insertion movement oriented transversely with respect to a longitudinal direction of the respective hose (21, 22, 23), resulting in a plug-in system arrangement of the hoses which are connectable to the hose connection points (3, 4, 5) without being screwed in, at least one of the hose connection points (3, 4, 5) is guided via a distribution chamber (26, 28) to a plurality of outlet openings (25, 27) of the outlet piece (1), and at least two of the distribution chambers (26, 28) are connected to one said hose connection point (3, 4, 5) each and are each guided to one of the plurality of outlet openings (25, 27).
29. The sanitary outlet piece as claimed in claim 28, further comprising at least two concentric arrangements of the outlet openings (25, 27) formed on the outlet side (6), each said arrangement of the outlet openings is connected to a hose connection point (3, 4, 5).
30. A sanitary outlet piece (1) for inserting into a fitting outlet, the sanitary outlet piece comprising a basic body (33) with an inlet side (2), an outlet side (6) and more than two hose connection points (3, 4, 5) that are formed spaced apart from one another on the inlet side (2) and are each guided to the outlet side (6), a holding plate (57) having at least three recesses (58, 59, 60) corresponding to the hose connection points (3, 4, 5), one hose (21, 22, 23) being insertable into a corresponding one of the hose connection points by an insertion movement oriented transversely with respect to a longitudinal direction of the respective hose (21, 22, 23), resulting in a plug-in system arrangement of the hoses which are connectable to the hose connection points (3, 4, 5) without being screwed in, at least one of the hose connection points (3, 4, 5) is guided via a distribution chamber (26, 28) to a plurality of outlet openings (25, 27) of the outlet piece (1), and the distribution chamber (26, 28) is formed at a connecting point (36) between a first part (34) and a second part (35) of the basic body (33).
31. A sanitary outlet piece (1) for inserting into a fitting outlet, the sanitary outlet piece comprising a basic body (33) with an inlet side (2), an outlet side (6) and more than two hose connection points (3, 4, 5) that are formed spaced apart from one another on the inlet side (2) and are each guided to the outlet side (6), a holding plate (57) having at least three recesses (58, 59, 60) corresponding to the hose connection points (3, 4, 5), one hose (21, 22, 23) being insertable into a corresponding one of the hose connection points by an insertion movement oriented transversely with respect to a longitudinal direction of the respective hose (21, 22, 23), resulting in a plug-in system arrangement of the hoses which are connectable to the hose connection points (3, 4, 5) without being screwed in, and at least one leakage outlet (70) formed on the basic body (33), said leakage outlet connecting a space adjacent to the more than two hose connection points (3, 4, 5) to an external environment.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The invention will now be described in more detail with reference to an exemplary embodiment, but is not restricted to said exemplary embodiment. Further exemplary embodiments emerge from a combination of the features of individual or of a plurality of claims with one another and/or with individual or a plurality of features of the exemplary embodiment.
(2) In the drawings
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DETAILED DESCRIPTION
(45) First of all,
(46) A sanitary outlet piece denoted as a whole by 1 has an inlet side 2 on which three hose connection points 3, 4, 5 are formed.
(47) It is apparent from
(48) Each of the hose connection points 3, 4, 5 is guided in a manner still to be described in more detail to an outlet side 6 of the sanitary outlet piece.
(49) The inlet side 2 and the outlet side 6 are formed here at mutually opposite ends 7, 8 of the sanitary outlet piece 1. The ends 7, 8 are arranged one behind another here in an insertion direction 9 (cf.
(50) Two annularly encircling housing edges 50, 51 are formed between the inlet side 2 and the outlet side 6 (cf.
(51) Between the ends 7, 8, the sanitary outlet piece 1 has an encircling outer wall 10 (cf.
(52) In the exemplary embodiment, the outer wall 10 is of substantially cylindrical design and is inserted into a fitting outlet 38 of a sanitary fitting 37 from below, i.e. counter to a direction of flow.
(53) The hose connection points 3, 4, 5, in each case taken by themselves, are guided separately from the inlet side 2 to the outlet side 6 in such a manner that no valves and no junctions for adding additional liquids or for mixing the volumes of water from the hose connection points 3, 4, 5 with one another takes place between the ends 7, 8.
(54) Water outlets 11, 12, 13 which are separated from one another are formed on the outlet side 6. The water outlet 11 is connected here only to the hose connection point 3, the water outlet 12 is connected only to the hose connection point 4, and the water outlet 13 is connected only to the hose connection point 5.
(55) In other words, a junction-free water duct 14 is formed between the hose connection point 3 and the water outlet 11 in the sanitary outlet piece 1. Similarly, a junction-free water duct 15 is formed between the hose connection point 4 and the water outlet 12 in the sanitary outlet piece 1. Finally, a water duct 16 is formed between the hose connection point 5 and the water outlet 13.
(56) It can be seen in
(57) An internal thread 19 into which a connecting piece 20 is in each case screwed is formed on each of the hose connection points 3, 4, 5.
(58) A hose 21, 22, 23 which is in each case fastened in a manner known per se with a crimp sleeve 24 is plugged onto each of said connecting pieces 20.
(59) An annular arrangement of outlet openings 25 which are connected to the hose connection point 3 via the water duct 14 is formed in the water outlet 11. A distribution chamber 26 is formed here in the water duct 14, via which distribution chamber water flowing in from the hose connection point 3 is substantially uniformly distributed to the outlet openings 25.
(60) It is apparent in
(61) It is apparent in
(62) The outlet openings 27 are connected to the hose connection point 4 via a distribution chamber 28.
(63) It is apparent in
(64) The outlet openings 25 are formed here in a groove base 29 of an annular groove 30. By contrast, the outlet openings 27 are formed in a groove base 31 of an annular groove 32.
(65) The annular groove 30 is formed and arranged concentrically with respect to the annular groove 32.
(66) The sanitary outlet piece 1 has a basic body 33 which is comprised of a first part 34 and a second part 35.
(67) The hose connection points 3, 4, 5 are formed on the first part 34 while the outlet side 6 is formed on the second part 35 of the basic body 33.
(68) The first part 34 and the second part 35 are connected to each other in an integrally bonded manner. In further exemplary embodiments, the parts 34 and 35 are alternatively or additionally connected in a form-fitting and/or force-fitting manner.
(69) The distribution chambers 26, 28 are formed at the connecting point 36 between the first part 34 and the second part 35. The distribution chambers 26, 28 are formed here in the first part 34 onto which the second part 35, which is designed as a distribution plate, is finally placed and connected.
(70) A jet regulator (not illustrated specifically) and/or jet former is connected downstream of the sanitary outlet piece 1 on the outlet side 6.
(71) For use of the sanitary outlet piece 1, the outlet piece 1 is inserted into a sanitary fitting 37 indicated in
(72) For this purpose, the sanitary fitting 37 has an outlet fitting 38 on which a tubular receptacle 39 is formed. The inner contour of the tubular receptacle 39 is coordinated with the outer contour of the outer wall 10 in such a manner that the sanitary outlet part 1 fits with its basic body 33 into the tubular receptacle 39.
(73) During use according to the invention, the sanitary outlet piece 1 is therefore inserted into the tubular receptacle 39 until said sanitary outlet piece lies against the stop 40.
(74) Subsequently, a screw sleeve 41 as a mouthpiece with an outlet element 42 is screwed into the fitting outlet 38. The sanitary outlet piece 1 is thereby clamped between the stop 40 and the outlet element 42. The outlet element 42 can have, for example, a jet regulator, a jet former, an outlet rectifier and/or an outlet sieve. Sealing rings 55 provide a seal with respect to the second part 35.
(75) In addition, the hose 21 is connected to a metering and/or mixing device 43 which is illustrated schematically in
(76) The hose connection point 4 can thereby be used, for example, as a cold hose connection point and the hose connection point 5 as a hot hose connection point.
(77) Alternatively or additionally, one of the hoses 22, 23 is usable with an outlet for enriched water, for example for water enriched with CO.sub.2, as a result of which an enrichment hose connection point can be formed at the hose connection point 4 or 5. A hose connection point can also be charged with taste and/or odor additives, for example syrup.
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(79) The exemplary embodiment according to
(80)
(81) The exemplary embodiment according to
(82) It is apparent from
(83) Also in the case of the exemplary embodiment according to
(84) This makes it possible for the water to be able to emerge transversely at an angle of 90° or at a different angle with respect to a direction of extent of the fitting outlet 38.
(85) The combination of the various embodiments illustrated shows that the inlet from all directions, preferably separated or spaced apart from the outlet side 6, is possible.
(86) The sanitary fitting 37 can therefore be of non-circular or particularly flat design.
(87) In order to be able to fit the sanitary outlet piece 1, an insertion plate 52 is fastened to the sanitary fitting 37 with fastening means 54 (cf.
(88) The screw sleeve 41 is screwed into said insertion plate 52, which is part of the fitting outlet, in order to press the sanitary outlet piece against a stop 40 and to hold it securely there. The insertion plate 52 therefore acts as a clamping plate.
(89) The fastening of the insertion plate 52 is therefore designed in such a manner that the holding forces can be absorbed and dissipated via the sanitary fitting 37.
(90) It can be seen in
(91) In contrast to the preceding exemplary embodiments, the parts 34, 35 are therefore not aligned with each other, but rather holding means are formed on one of the parts 34, 35 in order to hold the other part 34, 35 in a defined orientation.
(92) In
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(95) The exemplary embodiment according to
(96) The hoses 21, 22, 23 are plugged here into the respective hose connection point 3, 4, 5.
(97) For the axial fixing of the hoses 21, 22, 23, there is a holding plate 57 which is designed in the shape of a disk and is provided with recesses 58, 59, 60 corresponding to the hose connection points 3, 4, 5.
(98) A hose 21, 22, 23 is in each case insertable laterally, i.e. transversely with respect to a longitudinal direction of the respective hose 21, 22, 23, into each recess 58, 59, 60 and is inserted in the use position. It can be seen in the figures that the recesses 58, 59, 60 open outward (in a plane defined by the holding plate 57) such that the hoses 21, 22, 23 are insertable into the recesses 58, 59, 60 by an insertion movement directed toward one another.
(99) An encircling holding groove 61 is formed on each hose 21, 22, 23. In the example, said holding groove 61 is formed on the crimp sleeve 24. In the use position, the holding plate 57 engages with its recess 58, 59, 60 in the respective holding groove 61 such that the respective holding groove 61 engages on both sides over the holding plate 57 and fixes same axially, i.e. along the plugging-in direction of the hoses 21, 22, 23. Alternatively, instead of the holding groove 61, a holding edge 63 can be arranged which engages over the holding plate 57 on one side and thus prevents the respective hose 21, 22, 23 from slipping out (cf.
(100) The holding plate 57 is inserted into a fitting outlet 38 which surrounds the recesses 58, 59, 60 in the manner of a ring. The fitting outlet 38 is arranged on the inlet side 2 such that the holding plate 57 is pressed against the basic body 33.
(101) For this purpose, a screw sleeve 41 is formed with a mating thread (internal or external thread) which matches the fitting outlet 38 and is screwed to the fitting outlet 38. The fitting outlet 38 grips behind the basic body 33 (together with an outlet element 42 which is yet to be described, on the supporting edge 66 of said outlet element). The fitting outlet 38 therefore exerts a contact pressure against the holding plate 57. For this purpose, in a further embodiment, the fitting outlet 38 can be screwed to the basic body 33, and therefore the screw sleeve 41 can be dispensed with.
(102) The exemplary embodiment according to
(103) In addition, it can be seen in the figures that the basic body 33, on which the inlet side 2 and the outlet side 6 are formed—separated by two housing edges 50, 51 and therefore at mutually opposite ends 7, 8—is integrally formed, for example by injection molding.
(104) The hose connection points 4 and 5 are guided together to a water outlet 12 which opens into an outlet nozzle 56. Wing-shaped rectifying elements 68 are formed in the outlet nozzle 56, in order to form a calm or laminar water flow.
(105) The outlet nozzle 56 is formed here on the outlet element 42 and completely passes through the latter in the longitudinal direction.
(106) The outlet element 42 is a jet former cartridge 64 or another cartridge-shaped insert which is pressed by the screw sleeve 41 at a supporting edge 66 against the basic body 33 (via a sealing ring 55). The supporting edge 66 here forms a holding stop 62, against which the screw sleeve 41 presses.
(107) By way of example, a diffuser which is known per se is shown in the interior of the jet former cartridge 64.
(108) In contrast to commercially available jet former cartridges, this is provided on the inflow side with a connecting piece 65 which protrudes from the basic shape and in particular over the supporting edge 66. The connecting piece 65 connects into a corresponding connecting-piece receptacle 67 of the basic body 33. It is therefore possible to prevent a conventional jet former cartridge from being inadvertently installed instead of the special jet former cartridge 64. This is because the attachment screen of said conventional jet former cartridge prevents mounting on the connecting-piece receptacle.
(109) A plurality of longitudinally running grooves or recesses are designed as leakage outlets 70 on the basic body 33, in the outer wall 10 thereof. Water which accumulates at the hose connection points 3, 4, 5 outside the hoses 21, 22, 23 but in the immediate vicinity thereof flows outward through said leakage outlet 70 via the outlet side 6 and the outlet element connected downstream. Leakages at the hoses 21, 22, 23 or the hose connection points 3, 4, 5 can therefore be easily seen from the outside before larger leakage amounts accumulate and cause greater damage. Leakage outlets 70 of this type can also be formed on the basic body 33 in the case of the exemplary embodiment according to
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(111) Only the holding plate 57 with the inserted hoses 21, 22, 23 are shown here; the other details are as per
(112) The holding plate 57 differs from that according to
(113) The contours of the holding plates 57 according to
(114) It is apparent in
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(116) The exemplary embodiment according to
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(118) The exemplary embodiment according to
(119) The illustrations according to
(120) In the case of the sanitary outlet piece 1, it is proposed, on an inlet side 2, to form at least two hose connection points 3, 4, 5 which are offset laterally with respect to one another and are guided separately from one another in the sanitary outlet piece 1 from the inlet side 2 to an outlet side 6 of the sanitary outlet piece 1.
LIST OF REFERENCE SIGNS
(121) 1 Sanitary outlet piece
(122) 2 Inlet side
(123) 3, 4, 5 Hose connection point
(124) 6 Outlet point
(125) 7, 8 End
(126) 9 Insertion direction
(127) 10 Outer wall
(128) 11, 12, 13 Water outlet
(129) 14, 15, 16 Water duct
(130) 17, 18 Opening diameter
(131) 19 Internal thread
(132) 20 Connecting piece
(133) 21, 22, 23 Hose
(134) 24 Crimp sleeve
(135) 25 Outlet opening
(136) 26 Distribution chamber
(137) 27 Outlet opening
(138) 28 Distribution chamber
(139) 29 Groove base
(140) 30 Annular groove
(141) 31 Groove base
(142) 32 Annular groove
(143) 33 Basic body
(144) 34 First part
(145) 35 Second part
(146) 36 Connecting point
(147) 37 Sanitary fitting
(148) 38 Fitting outlet
(149) 39 Tubular receptacle
(150) 40 Stop
(151) 41 Screw sleeve
(152) 42 Outlet element
(153) 43 Metering and/or mixing device
(154) 44 Hot water inlet
(155) 45 Cold water inlet
(156) 46 Outlet for mixed water
(157) 47 Two-way lever
(158) 48 Outlet for hot water
(159) 49 Outlet for cold water
(160) 50, 51 Housing edge
(161) 52 Insertion plate
(162) 53 Holding projection
(163) 54 Fastening means
(164) 55 Sealing ring
(165) 56 Outlet nozzle
(166) 57 Holding plate
(167) 58, 59, 60 Recess
(168) 61 Holding groove
(169) 62 Holding stop
(170) 63 Holding edge
(171) 64 Jet former cartridge
(172) 65 Connecting piece
(173) 66 Supporting edge
(174) 67 Connecting-piece receptacle
(175) 68 Rectifying element
(176) 69 Inner wall
(177) 70 Leakage outlet
(178) 71 Sealing ring
(179) 72 Shoulder
(180) 73 Groove
(181) 74 Further shoulders