EP3070209B1 - Corps de robinetterie pour une armature sanitaire et procede de fabrication - Google Patents

Corps de robinetterie pour une armature sanitaire et procede de fabrication Download PDF

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Publication number
EP3070209B1
EP3070209B1 EP16000557.5A EP16000557A EP3070209B1 EP 3070209 B1 EP3070209 B1 EP 3070209B1 EP 16000557 A EP16000557 A EP 16000557A EP 3070209 B1 EP3070209 B1 EP 3070209B1
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EP
European Patent Office
Prior art keywords
partial shell
partial
shell
molding compound
fitting body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16000557.5A
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German (de)
English (en)
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EP3070209A1 (fr
Inventor
Thomas Loi
Pia Theyson
Hartwig Philipps-Liebich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grohe AG
Original Assignee
Grohe AG
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Publication of EP3070209A1 publication Critical patent/EP3070209A1/fr
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Publication of EP3070209B1 publication Critical patent/EP3070209B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • E03C1/0404—Constructional or functional features of the spout

Definitions

  • the present invention relates to a fitting body for a sanitary fitting and a method for producing a fitting body for a sanitary fitting.
  • the fitting body is in particular a part or a component of a sanitary fitting.
  • Sanitary fittings are, in particular, thermostatic fittings and / or mixing fittings, in particular thermostatic mixing fittings, for bathtubs, basins, hand showers or the like.
  • the sanitary fittings regularly have a hot water inlet for hot water and a cold water inlet for cold water.
  • the sanitary fittings regularly have an outlet opening for mixed water.
  • the hot water and the cold water can be mixed within the sanitary fitting by means of a thermostatic valve in order to achieve a predeterminable water temperature.
  • the water flow or the amount of water can be adjusted by means of a volume control valve.
  • the valves can be actuated by means of separate actuators or by means of a common actuator.
  • Water fittings are known in which the water channels or the waterways are formed in a base body.
  • a base body is formed, for example, from metal, plastic or the like.
  • the water channels are introduced into the base body during the manufacturing process, in particular during a casting process or injection molding process, using appropriate molding tools.
  • Another possibility of avoiding undercuts in the demolding direction is to demold the water channels or the water paths in the molding tool in parallel. This creates, based on a parting surface of the base body, open water channels that are not undercut in the viewing direction of the parting surface.
  • a fitting consisting of two sub-shells arranged to match one another can be found, for example, in US 4649958 ,
  • a production has the disadvantage that the open water channels have to be closed after demolding.
  • a corresponding cover can be applied to the separating surface.
  • Such a cover can be fixed by means of gluing, screwing, friction welding, vibration welding or the like. This also depends on whether the base body is made of plastic or metal.
  • Such a manufacturing process generally takes place in several stages, because the closing of the open channels follows the manufacture of the base body and the demolding of the base body.
  • Such manufacturing processes are subject to fluctuations, so that the result can only be guaranteed with great effort, reliably and uniformly in the context of series production.
  • the present invention is based on the object of at least partially solving the problems described with reference to the prior art.
  • a fitting body for a sanitary fitting can be specified which is simple to manufacture, requires a small installation space and has as few sealing points as possible.
  • the mold release should be facilitated and undercuts in the mold removal direction avoided.
  • the valve body should appear in one piece when viewed from the outside.
  • a manufacturing method for a fitting body is also to be specified, which enables a compact fitting body to be manufactured as simply as possible with as few sealing points as possible or with high tightness.
  • the individual components should be easy to remove from the mold and undercuts should be avoided.
  • the present invention provides a fitting body for a sanitary fitting.
  • the valve body has an outer side which is formed with at least one first partial shell and at least one second partial shell.
  • the at least one first partial shell and the at least one second partial shell are arranged to match one another.
  • At least one water path is formed between the at least one first partial shell and the at least one second partial shell.
  • the outside is mainly covered by a molding compound by injection molding, so that the separating surface of the two partial shells is sealed by the molding compound.
  • This type of waterway formation results in a solid component, in particular a plastic part, without unnecessary external sealing points. Due to the covering with the molding compound and in particular the extrusion coating with the molding compound, a high level of tightness of the fitting body is guaranteed over a long period of use, which in addition has a one-piece effect on the outside.
  • the outside of the fitting body is formed with the at least one first partial shell and the at least one second partial shell, the partial shells together practically forming the entire outside (possibly excluding sensors, connections, openings, etc.).
  • the outside is located on the side of the partial shells facing away from the at least one waterway.
  • the outside can also be understood as the outer surface of the partial shells.
  • the fitting body is usually itself not visible from the outside in the fitting housing, so that the outside mentioned here is not basically to be equated with an outer surface of the sanitary fitting itself.
  • the at least one first partial shell and the at least one second partial shell are preferably each a half shell of the fitting body.
  • An upper or lower half-shell relates in particular to an upper or lower half of a fitting body. If the partial shells are formed as half shells, the separation or the separating surfaces of the half shells lie in one plane, in particular a division plane or separation plane. Such an arrangement with the upper and lower half-shells is not mandatory, however, because a large number of first and / or second partial shells can also be present, as a result of which the separating surfaces of the respective partial shells lie in several, in particular inclined, planes.
  • the partial shells are arranged to match each other at their respective separating surfaces and / or are connected to one another. The separating surfaces can be brought into contact with one another, for example, and / or brought into shape engagement, for example, by means of positioning elements.
  • At least one water path is formed between the at least one first partial shell and the at least one second partial shell. In other words, this also means that the waterway is enclosed by the partial shells along the flow direction of the water.
  • Several waterways are usually provided, which for example guide cold water, warm water and / or mixed water through the valve body.
  • the outside of the fitting body - according to assembled partial shells - is predominantly covered by a molding compound, in particular at least 70% or 80%. It is very particularly preferred that the outside is completely covered by the molding compound. In particular, all border areas of the two sub-circuits are also included with one another (sealing surfaces). Preferably, the outside is almost completely covered with the molding compound, with openings of the fitting body, such as. B. inlet openings, outlet openings, connecting pieces or the like are not covered by the molding compound. In other words, this means in particular that the outer surface of the partial shells can also be (completely) covered by the molding compound.
  • the at least one first partial shell and the at least one second partial shell are extrusion-coated with the molding compound.
  • the partial shells which were previously connected to one another, are encapsulated in an injection molding tool using a liquid molding compound.
  • the half-shells are designed and connected to each other so that they can withstand the high spray pressure in the Withstand the injection molding tool and are sealed against the liquid molding compound.
  • the covering with the molding compound can advantageously be carried out as quickly as possible and in particular in series production.
  • At least the at least one first partial shell, the at least one second partial shell or the molding compound is or are formed with a plastic or silicone.
  • At least the at least one first partial shell, the at least one second partial shell or the molding compound preferably consists of a plastic or has a plastic.
  • the partial shells themselves can be formed by means of a casting process, in particular by means of an injection molding process. However, it is not imperative that all partial shells are made of the same plastic.
  • the molding compound is formed with or from a particularly strong or dimensionally stable plastic. This advantageously leads to the component strength of the fitting body being largely determined by the molding compound.
  • the at least one first partial shell and the at least one second partial shell are connected to one another by means of a tongue and groove connection.
  • a tongue and groove connection is formed, for example, with at least one groove in a separating surface of a second partial shell and with at least one projection corresponding to the groove on an associated separating surface in a first partial shell.
  • the separating surfaces relate here to the contact surfaces or contact surfaces of the contacting partial shells.
  • the respective projection engages at least partially in the corresponding groove.
  • a partial shell can have several grooves and / or projections.
  • the tongue and groove connection not only serves to join the partial shells in a form-fitting manner, but also to seal the water paths between and within the partial shells.
  • a tightness is to be provided from the outside inwards, which is necessary for the process downstream of the connection, the covering and in particular the extrusion coating with the molding compound.
  • Such a downstream process can, for example, be carried out in a second mold, the individual partial shells being able to be cast in a first mold beforehand.
  • the tightness of the connection points of the partial shells is of secondary importance for later use in a sanitary fitting, because all the sealing points that go outward are only formed when the molding compound is covered and in particular when it is encapsulated.
  • a tongue and groove connection between the partial shells is not mandatory (to be provided alone) because the partial shells can also be joined by means of an adhesive connection or a material connection, in particular under the influence of heat. Connections in which the connection partners are held together by atomic or molecular forces are referred to here as "cohesive".
  • a cavity be formed in the region of an outlet opening of the at least one waterway by means of the molding compound.
  • the cavity extends beyond an end region of the at least one first partial shell and the at least one second partial shell.
  • the cavity can also extend in a direction transverse to the conveying direction or flow direction of the waterway beyond the outlet opening of the waterway or beyond the end region of the partial shells. In other words, this means in particular that a diameter of the cavity is larger than a diameter of the waterway.
  • a cross section of the waterway or the cavity is here understood to be essentially perpendicular to a flow direction or conveying direction of the waterway.
  • the waterway and / or the cavity can be circular, oval or angular in cross section.
  • the cavity be designed with at least one sealing means or a connecting means.
  • a connecting means can be implemented here in the manner of a thread, by means of locking tongues or by means of at least one clip or the like.
  • a sealant can be designed here in the manner of an additional seal, such as an O-ring seal or a disk seal or the like.
  • the cavity can also be understood as a sealing area, wherein, for example, a projection formed with the molding compound extends further inward from an inner circumference of the sealing area.
  • the cavity can also be designed to receive an insert that is formed with or from metal or plastic.
  • an insert can be used, for example, for connection to a valve or a water connection.
  • Such use can also and in particular in one process step with the partial shells covered with the molding compound and preferably overmolded.
  • connection in step b) be carried out by means of a tongue and groove connection.
  • a tongue and groove connection is not mandatory because the connection in step b) can also be carried out by means of an adhesive connection or a material connection, in particular by means of a welding process.
  • step c) at least a partial area of the at least one first partial shell and the at least one second partial shell is extrusion-coated with the molding compound.
  • the overmolding in step c) can be carried out in a second process step and in particular in a second mold.
  • step c) a cavity is formed in the region of an outlet opening of the at least one waterway by means of the molding compound, the cavity extending beyond an end region of the at least one first partial shell and the at least one second partial shell.
  • the cavity and in particular a sealing area can also be formed here in a second process step and in particular in a second tool shape.
  • all sealing points that make the valve body releasably connectable to the outside or to external devices are formed by means of the molding compound.
  • the second mold is preferably designed as a plastic injection mold.
  • the partial shells which are already connected to one another are preferably held within the second mold and are extrusion-coated with the molding compound from the outside.
  • the second tool shape can also be designed to enable the encapsulation of a cavity that is upstream or downstream of the partial shells in or against a flow direction of the waterway.
  • the second mold can for example comprise a casting core, an inner body corresponding to the cavity or the like.
  • Fig. 1 shows a valve body 1 in a sectional view.
  • the valve body 1 has an outer side 2.
  • the outer side 2 is formed here with a first partial shell 3 and a second partial shell 4. Since there are two partial shells here, the first partial shell 3 is, for example, an upper half shell 15 and the second partial shell 4 is a lower half shell 16.
  • the first partial shell 3 and the second partial shell 4 are connected to one another at a separating surface 17.
  • a water path 5 is formed between the first partial shell 3 and the second partial shell 4.
  • the waterway 5 has two outlet openings 7. In the left part of the Fig. 1 is the outlet opening 7 to the left, and in the right part of the Fig. 1 the outlet opening 7 is directed upwards. Whether the outlet opening 7 is an influence or an outflow for water depends on the direction of flow of the water in the water path 5.
  • the outside 2 is predominantly covered by a molding compound 6.
  • the first partial shell 3 and the second partial shell 4 are extrusion-coated with the molding compound.
  • the molding compound 6 surrounds the outer surface of the upper half-shell 15 and the lower half-shell 16.
  • the molding compound 6 enables a particularly homogeneous outer contour of the fitting body 1.
  • first partial shell 3 and the second partial shell 4 are almost completely overmolded with the molding compound, but the outlet openings 7 of the waterways 5 are not closed by the molding compound 6.
  • the upper half shell 15 and the lower half shell 16 are each formed with plastic.
  • the upper half-shell 15 and the lower half-shell 16 are produced in a plastic injection molding tool.
  • the molding compound 6 is also formed here with plastic.
  • the upper half-shell 15 and the lower half-shell 16 were extrusion-coated with the molding compound 6, namely the plastic, in a connected state.
  • the separation of the upper half-shell 15 and the lower half-shell 16 lies in one plane.
  • the separating surface 17 is thus formed in this plane.
  • the upper half shell 15 and the lower half shell 16 are connected to one another by means of a tongue and groove connection 10 along the separating surface 17.
  • the Fig. 1 further shows in the left area that a cavity 8 is subsequently formed and / or in alignment with the outlet opening 7 of the waterway 5 by means of the molding compound 6.
  • the cavity 8 extends beyond an end region 9 of the first partial shell 3 and the second partial shell 4.
  • an inner diameter of the cavity 8 is also larger than an inner diameter of the waterway 5.
  • the in Fig. 1 Cavity 8 shown on the left is designed with a sealing means 11 or a connecting means 12.
  • the cavity 8 has an internal shape in the manner of a thread 13.
  • the left cavity 8 thus also represents a sealing region 14.
  • the cavity 8 extends in the exemplary flow direction 20 beyond the outlet opening 7 and the end region 9.
  • the inner diameter of the cavity 8 is also larger than an inner diameter of the upwardly directed outlet opening 7 of the waterway 5.
  • Fig. 2 a perspective view of the fitting body 1 for a sanitary fitting is shown.
  • the outside 2 of the fitting body is predominantly covered by the molding compound 6.
  • the outside 2 is formed with a first partial shell 3 and a second partial shell 4. Since two partial shells are provided here, the first partial shell 3 is an upper half shell 15 and the second partial shell 4 is a lower half shell 16, which are attached to their respective sides Partitions 17 are interconnected.
  • the upper half-shell 15 and the lower half-shell 16 are connected by means of a tongue and groove connection 10.
  • a tongue and groove connection 10 is shown both on the left side and on the right side.
  • the tongue and groove connection 10 runs along the separating surface 17 of the two partial shells.
  • the upper half-shell 15 has a projection 18 on the left and right and the lower half-shell 16 has a groove 19 on the left and right.
  • the projections 18 engage in the grooves 19.
  • the projections 18 or the grooves 19 extend here in or against a flow direction or direction of expansion of the waterway 5.
  • the perspective view of the Fig. 2 is from the outside on the in Fig. 1 cavity 8 shown on the left.
  • the cavity 8 is designed with a connecting means 12, namely an internal shaping in the manner of a thread 13.
  • a connecting means 12 namely an internal shaping in the manner of a thread 13.
  • a corresponding water supply line with an external thread can be connected.
  • valve body is simple and can be produced in particular in the context of series production and requires a small amount of space.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (10)

  1. Corps de robinetterie (1) destiné à une robinetterie sanitaire, pourvu d'une face extérieure (2), qui est créée avec au moins une première demi-coque (3) et au moins une deuxième demi-coque (4), l'au moins une première demi-coque (3) et l'au moins une deuxième demi-coque (4) étant placées en adaptation réciproque et étant assemblées l'une à l'autre sur une surface de séparation (17), entre l'au moins une première demi-coque (3) et l'au moins une deuxième demi-coque (4) étant créé au moins un trajet d'eau (5), caractérisé en ce que la face extérieure (2) est recouverte par moulage par injection en majeure partie d'un composé de moulage (6), de sorte que l'étanchéité de la surface de séparation (17) soit assurée par le composé de moulage (6).
  2. Corps de robinetterie selon la revendication 1, l'au moins une première demi-coque (3) et l'au moins une deuxième demi-coque (4) étant surmoulées avec le composé de moulage (6).
  3. Corps de robinetterie selon la revendication 1 ou 2, au moins l'au moins une première demi-coque (3), l'au moins une deuxième demi-coque (4) ou le composé de moulage (6) étant créé(e) d'une matière plastique ou de silicone.
  4. Corps de robinetterie selon l'une quelconque des revendications précédentes, l'au moins une première demi-coque (3) et l'au moins une deuxième demi-coque (4) étant assemblées l'une à l'autre au moyen d'un assemblage par rainure et languette (10) .
  5. Corps de robinetterie selon l'une quelconque des revendications précédentes, dans la région d'un orifice de sortie (7) de l'au moins un trajet d'eau (5), une cavité (8) étant créée au moyen du composé de moulage (6), la cavité (8) s'étendant au-delà d'une zone d'extrémité (9) de l'au moins une première demi-coque (3) et de l'au moins une deuxième demi-coque (4).
  6. Corps de robinetterie selon la revendication 5, la cavité (8) étant réalisée avec au moins un moyen d'étanchéité (11) ou un moyen d'assemblage (12).
  7. Procédé, de fabrication d'un corps de robinetterie (1) destiné à une robinetterie sanitaire, comprenant au moins les étapes suivantes consistant à :
    a) mettre à disposition au moins une première demi-coque (3) et au moins une deuxième demi-coque (4),
    b) placer en adaptation l'au moins une première demi-coque (3) par rapport à l'au moins une deuxième demi-coque (4), de telle sorte que la première demi-coque (3) et la deuxième demi-coque (4) soient assemblées l'une à l'autre sur une surface de séparation (17), une face extérieure (2) du corps de robinetterie (1) étant créée et entre l'au moins une première demi-coque (3) et l'au moins une deuxième demi-coque (4) étant créé au moins un trajet d'eau (5),
    caractérisé en ce
    c) qu'on recouvre une majeure partie de la face extérieure (2) avec un composé de moulage (6) par moulage par injection, de telle sorte que l'étanchéité de la surface de séparation (17) soit assurée par le composé de moulage (6).
  8. Procédé selon la revendication 7, l'assemblage lors de l'étape b) s'effectuant au moyen d'un assemblage par rainure et languette (10).
  9. Procédé selon la revendication 7 ou 8, dans l'étape c), le composé de moulage (6) étant surmoulé sur au moins une région partielle de l'au moins une première demi-coque (3) et de l'au moins une deuxième demi-coque (4)
  10. Procédé selon l'une quelconque des revendications 7 à 9, dans l'étape c), dans la région d'un orifice de sortie (7) de l'au moins un trajet d'eau (5), une cavité (8) étant créée au moyen du composé de moulage (6), la cavité (8) s'étendant au-delà d'une zone d'extrémité (9) de l'au moins une première demi-coque (3) et de l'au moins une deuxième demi-coque (4).
EP16000557.5A 2015-03-09 2016-03-08 Corps de robinetterie pour une armature sanitaire et procede de fabrication Active EP3070209B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015002898.7A DE102015002898A1 (de) 2015-03-09 2015-03-09 Armaturenkörper für eine Sanitärarmatur und Herstellungsverfahren

Publications (2)

Publication Number Publication Date
EP3070209A1 EP3070209A1 (fr) 2016-09-21
EP3070209B1 true EP3070209B1 (fr) 2020-02-12

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DE (1) DE102015002898A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016007359A1 (de) * 2016-06-17 2017-12-21 Grohe Ag Armaturenkörper für eine Sanitärarmatur, aufweisend einen Deckel mit einem Hohlraum
JP7222198B2 (ja) * 2018-08-09 2023-02-15 Toto株式会社 湯水混合水栓
DE102019102723A1 (de) * 2019-02-04 2020-08-06 Grohe Ag Verfahren zur Herstellung einer Sanitärarmatur und Sanitärarmatur mit einem Kunststoffkern
DE102022104380A1 (de) 2022-02-24 2023-08-24 Grohe Ag Verfahren zur Herstellung eines Armaturengehäuses für eine Sanitärarmatur und Sanitärarmatur mit einem Armaturengehäuse
DE102022104381A1 (de) 2022-02-24 2023-08-24 Grohe Ag Verfahren zur Herstellung eines Armaturengehäuses für eine Sanitärarmatur und Sanitärarmatur mit einem Armaturengehäuse

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2367809A (en) * 1942-12-03 1945-01-23 Sears Roebuck & Co Spout
US2795844A (en) * 1954-04-21 1957-06-18 Jacobs Co F L Method of making a hollow article
US4649958A (en) * 1982-06-28 1987-03-17 Masco Corporation Of Indiana Faucet and spout construction
TWM277839U (en) * 2005-05-12 2005-10-11 Ways Technical Corp Faucet of composite structure
ES2561047T3 (es) * 2010-07-28 2016-02-24 Grohe Ag Elemento de grifería sanitaria

Non-Patent Citations (1)

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Title
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EP3070209A1 (fr) 2016-09-21
DE102015002898A1 (de) 2016-09-15

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