Set with a push-open drain fitting

Abstract

Set with a push-open drain fitting (1) for insertion into the bottom opening of a washbasin, sink, bathtub or shower tray, wherein the drain fitting (1) is equipped with a flow element (2) with a drain opening (22) for water for insertion and fastening in the bottom opening, a plug (3) with a seal (31) which can be selectively brought into a closed position relative to the flow element (2) in which the seal (31) closes the drain opening (22) watertight, and into a flow position relative to the flow element (2) in which the seal (31) leaves the drain opening (22) open so that water can flow out through the drain opening (22), a change-position mechanism (4) mechanically connected to the flow element (2) and the plug (3), which is such that each time the plug (3) is pressed down, the plug (3) alternately assumes the flow position and the closure position, characterized by the fact that the set includes blocking agents which can be inserted into and removed from the drain fitting (1) as often as desired and which are designed in such a way that, when inserted into the drain fitting (1), the blocking means prevent the plug (2) from being moved from the flow position to the closed position by pressing down and the blocking devices can be inserted and removed when the plug (3) is removed from the changeover mechanism (4), and the changeover mechanism (4) is in the position it would be in when the plug (3) is in the flow position.

Description

[0001] The invention relates to a set with a push-open drain fitting for insertion into the floor opening of a washbasin, sink, bathtub or shower tray.

[0002] A set with a drain fitting for installation in the floor opening of a vanity unit, sink, bathtub, or shower tray typically includes a flow element with a drain opening for water, as well as other small parts. The drain fitting includes a plug with a seal for temporarily closing the drain opening. Traditional faucets have a mechanism for raising and lowering the plug. This mechanism must be connected to the controls on the vanity unit or faucet and calibrated after the drain fitting is installed.Using the operating elements, the plug can be moved either into a closed position relative to the flow element, in which the seal closes the drain opening watertight, or into a flow position relative to the flow element, in which the seal leaves the drain opening open so that water can drain through the drain opening. A further development is the push-open or pop-up drain fitting, which has an alternating position mechanism mechanically connected to the flow element and the plug. This mechanism is such that each time the plug is pressed down, the plug alternates between the flow position and the closed position, similar to a ballpoint pen. This simplifies installation, as no additional operating elements need to be mounted and adjusted. An alternating position mechanism is generally known from US 7 152 892 B2, and a pop-up drain fitting from US 8 214 942 B2.

[0003] Modern washbasins and similar devices often lack an overflow, and therefore, such closable drain fittings cannot be installed by a professional. Therefore, there are usually drain fittings that match the design of the manufacturer's respective product line, but are not closable, but have the appearance of the closable drain fittings. Unfortunately, the manufacturer and retailer must keep both versions in stock. The installer is also often faced with the problem of being confronted with the "wrong" washbasin on site and not having the right drain on hand.

[0004] GB 2 233 894 A discloses a drain fitting for insertion into the floor opening of a washbasin, sink, bathtub or shower tray, with a flow element with a drain opening for water for insertion and fastening in the floor opening, a plug with a seal, which can be brought into a closed position or a flow position relative to the flow element and with a bayonet-like mechanism mechanically connected to the flow element and the plug, which can be locked or unlocked in the closed position by a conscious turning movement of the user under pressure.

[0005] DE 202 03 611 U1 discloses a tub-like body for holding a sealing ring and a hood.

[0006] It is therefore an object of the present invention to provide an improved set with a push-open drain fitting.

[0007] This problem is solved by a set with a push-open drain fitting having the features of the main claim. Advantageous embodiments are the subject of the subclaims.

[0008] According to the invention, it was initially recognized that in a set with a push-open drain fitting, a closable and a non-closable version of the fitting can be combined into a single set if the set includes blocking devices which can be inserted and removed from the drain fitting as often as required and which are designed in such a way that, when inserted into the drain fitting, the blocking devices prevent the plug from being moved from the flow-through position to the closed position by pressing down. For example, the installer can simply remove the blocking device already inserted into the fitting at the factory if they have to install a drain fitting that the user can move into either the flow-through or closed position. Otherwise, the fitting can be installed as a non-closable fitting. Manufacturers, dealers, and installers all benefit from the reduction in variants.A blocking device here is any reversible measure that can hold the plug in the flow position, be it a sleeve against which the plug hits when pressed down or a lock / pin that blocks the change position mechanism.

[0009] As known from the prior art, the invention uses a pop-up drain fitting for insertion into the floor opening of a vanity unit, washbasin, bathtub, shower tray, or the like. This comprises a flow-through element with a water outlet opening for insertion and fastening in the floor opening. This is connected at the bottom to the siphon / drain pipe and has a plug with a seal at the top. This plug can be moved either into a closed position relative to the flow-through element, in which the seal closes the drain opening watertight, or into a flow-through position relative to the flow-through element, in which the seal leaves the drain opening open so that water can drain through the drain opening.

[0010] Furthermore, the drain fitting features a pop-up mechanism mechanically connected to the flow element and the plug, which creates a pop-up action similar to the push button on a ballpoint pen or the push-to-open elements on cabinet doors. This mechanism is such that each time the plug is pressed down, the plug alternates between the flow position and the closed position.

[0011] Since the blocking means according to the invention can be inserted and removed when the plug is removed from the change-position mechanism and the change-position mechanism is in the position it would assume in the flow-through position of the plug, conversion is possible at any time, even when installed. Furthermore, it ensures that the blocking means only functions when installed in the flow-through position, and not in the closed position, which is to be avoided.

[0012] Conveniently, the operator can push down the plug by applying pressure to its visible top side and is therefore intuitive to perform.

[0013] If the change-over mechanism is located inside the drain fitting, particularly the flow element and / or the drain opening, the usual appearance of a drain fitting is achieved, and no external elements are visible or need to be connected. This applies in particular if the change-over mechanism has no external elements.

[0014] Preferably, the plug is detachably attached to the change-position mechanism, particularly for maintenance and cleaning purposes, and also to enable retooling. To prevent accidental retooling, attachment via a threaded connection is particularly useful. This can, for example, be tightened so tightly that accidental loosening is impossible.

[0015] The change-position mechanism preferably comprises the usual, proven designs and components. It extends, for example, coaxially or at least parallel to the longitudinal axis of the flow element, or is arranged in such a way. It can further comprise elements, in particular sleeves and / or bolts, that are movable relative to one another in the axial direction and guided into one another, which essentially slide into one another in a telescopic manner. Finally, a spring is preferably provided for pushing the elements, in particular the sleeves and / or bolts, apart from one another.

[0016] The change-position mechanism has a free end on the element that is movable relative to the flow element. This serves as a fastening means for releasably securing the plug. For this purpose, the locking means are designed such that they cannot be removed when the plug is attached to the free end, preventing the movement of the movable element when the plug is pressed down. The locking means can be removed or inserted when the plug is not attached to the free end.

[0017] In an embodiment of the invention, which, however, does not limit itself to the features of Fig.1, the free end 43 of the element 42 of the change-position mechanism 4, which is movable relative to the flow element 2, is designed as a thread. The plug 3, which has a circumferential seal 31, is screwed onto this with its mating thread 33. The movable element 42 of the change-position mechanism 4 can be inserted, at least partially, telescopically into the other element 41 of the change-position mechanism 4, which is connected to the flow element 2 and is therefore immobile, without this being shown precisely in the section here. It is a proven pop-up mechanism.

[0018] As a special feature of the invention, the blocking means is designed as a spacer sleeve 5, which is pushed onto the part of the movable element 42 protruding from the change-over position mechanism 4 and has the length of the protruding part of the movable element 42. The spacer sleeve 5 supports the plug 3 and this cannot be pushed in. The drain fitting is always in the flow-through position and can only be put into pop-up mode by temporarily unscrewing the plug 3 and removing the spacer sleeve 5. The spacer sleeve 5 can be designed accordingly so that it can be supported against the plug 3 or other components. In the present case, a shoulder running radially inwards is attached to the upper edge of the spacer sleeve 5 so that it can press against the bottom of the plug. The person skilled in the art will recognize that the blocking effect can also be achieved in other ways, e.g.: by a sufficiently long pin, insertable from above into an axial bore in the movable element 4.For aesthetic reasons, the spacer sleeve 5 can be adapted to the surface and appearance of the visible top of the plug, in particular by a chrome-plated surface.

Claims

[1] Set with a push-open drain fitting (1) for insertion into the floor opening of a washbasin, sink, bathtub or shower tray, whereby the drain fitting (1) is equipped with a flow element (2) with a drainage opening (22) for water to be inserted and fixed in the bottom opening, a plug (3) with a seal (31), which can be selectively brought into a closed position relative to the flow element (2), in which the seal (31) closes the drain opening (22) in a watertight manner, and into a flow position relative to the flow element (2), in which the seal (31) leaves the drain opening (22) open so that water can flow out through the drain opening (22), a change-position mechanism (4) mechanically connected to the flow element (2) and the plug (3), which is such that each time the plug (3) is pressed down, the plug (3) always alternately assumes the flow position and the closed position, characterized by , that the set includes blocking agents which can be inserted and removed from the drain fitting (1) as often as required and which are designed in such a way that the blocking means, when inserted into the drain fitting (1), prevent the plug (2) from being moved from the flow-through position into the closed position by pressing it down, and the blocking means can be inserted and removed when the plug (3) is removed from the change-position mechanism (4) and the change-position mechanism (4) is in the position it would assume when the plug (3) is in the flow-through position. [2] Set according to claim 1, characterized by that the pressing down of the plug (3) can be achieved by an operator by pressure on its visible upper side (34). [3] Set according to one of the preceding claims, characterized by that the change position mechanism (4) is provided inside the drain fitting (1) and in particular the flow element (2) and / or the drain opening (22) [4] Set according to claim 3, characterized by that the change position mechanism (4) has no elements outside the drain fitting (1) and in particular the flow element (2) and / or the drain opening. [5] Set according to one of the preceding claims, characterized by that the plug (3) is detachably fastened to the change position mechanism (4), in particular by means of a threaded connection (33). [6] Set according to one of the preceding claims, characterized by that the change position mechanism (4) extends and is arranged coaxially or at least parallel to the longitudinal axis of the flow element (2), comprises elements (41, 42) which are movable relative to one another in the axial direction and guided into one another, in particular sleeves and / or bolts, a spring for axially pushing the elements (41,42), in particular sleeves and / or bolts, apart from one another. [7] Set at least according to claim 5 and 6, characterized bythat the free end (43) of the element (42) of the change-position mechanism (4) which is movable relative to the flow element (2) has fastening means for releasably fastening the plug (3) and the blocking means are designed such that, when the plug (3) is fastened to the free end (43), they cannot be removed and prevent the movement of the movable element (42) when the plug (3) is pressed down, and the blocking means can be removed or inserted when the plug (3) is not fastened to the free end. [8] Set according to claim 7, characterized bythat the free end (43) of the element (42) of the change-position mechanism (4) which is movable relative to the flow element (2) is designed as a thread (33) onto which the plug (3) can be screwed, and / or the movable element (42), preferably designed as a bolt or sleeve, can be pushed at least partially into the other immovable element (41) of the change-position mechanism (4). [9] Set according to one of claims 7 or 8, characterized by that the blocking means is designed as a spacer sleeve (5), suitable for sliding onto a part of the movable element (42) projecting from the change-position mechanism (4) so that the spacer sleeve (5) bears against the plug (3) to prevent the plug (3) from being pushed in. [10] Set according to one of the preceding claims, characterized bythat the blocking means, in particular the spacer sleeve (5), is adapted to the surface and appearance of the visible upper side (34) of the plug (3), in particular by a chrome-plated surface of the plug and the spacer sleeve (5).

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