US-20260125885-A1 - CLOSURE ELEMENT FOR A DRAIN OPENING OF A SANITARY BASIN

US20260125885A1US 20260125885 A1US20260125885 A1US 20260125885A1US-20260125885-A1

Abstract

The invention relates to a closure element for a drain opening of a sanitary basin, in particular a sink, comprising a base body, which has an upper side, and an underside opposite the upper side, wherein a handle device is positioned on the upper side, and wherein the upper side has a recess, in particular positioned centrally on the upper side, in which the handle device is positioned, and wherein at least one sealing element is positioned on the underside in such a way that when the closure element is positioned at least partially in the drain opening of the sanitary basin, the closure element closes the drain opening in a liquid-tight manner.

Inventors

Reinhard Koska
Manuel FRANK
Georg Kahl-Marburger

Assignees

BLANCO GMBH + CO KG

Dates

Publication Date: 20260507
Application Date: 20230904
Priority Date: 20221018

Claims (20)

1 . A closure element for a drain opening of a sanitary basin, in particular a sink, comprising a base body, which has an upper side, and an underside opposite the upper side, wherein a handle device is positioned on the upper side, and wherein the upper side has a recess, in particular positioned centrally on the upper side, in which the handle device is positioned, and wherein at least one sealing element is positioned on the underside in such a way that, when the closure element is positioned at least partially in the drain opening of the sanitary basin, the closure element closes the drain opening in a liquid-tight manner.
2 . The closure element according to claim 1 , characterized in that the closure element is constructed in several parts, in particular in four or five parts, or in one part.
3 . The closure element according to claim 1 , characterized in that the handle device is positioned on the base body so that it is detachable, in particular by means of a latching connection.
4 . The closure element according to claim 1 , characterized in that the handle device can be fixed in an opening of the base body, in particular wherein the opening is in the shape of a cloverleaf.
5 . The closure element according to claim 1 , characterized in that the handle device has a flow interrupting device, in particular a tear-off edge, for the flow of a liquid that flows in the direction of a deeper surface area of the upper side of the base body, in such a way that the flow of the liquid in the deeper area is at least partially interrupted by the flow interrupting device.
6 . The closure element according to claim 1 , characterized in that the handle device is designed in one or more parts, in particular in two parts, comprising at least one handle base body and a cap.
7 . The closure element according to claim 6 , characterized in that the handle device can be fixed on different sides of the base body.
8 . The closure element according to claim 4 , characterized in that the handle device and the opening are designed to interact in order to provide anti-rotation locking of the handle device in the opening, in particular wherein the opening is in the shape of a cloverleaf.
9 . The closure element according to claim 5 , characterized in that the flow interrupting device, in particular the tear-off edge, is positioned on the handle base body.
10 . The closure element according to claim 6 , characterized in that the cap is fixed to the handle base body in a form-fit, material-fit, and/or friction-fit manner, in particular by means of pressing and/or bonding.
11 . The closure element according to claim 6 , characterized in that the cap projects at least partially beyond the flow interrupting device, in particular the tear-off edge.
12 . The closure element according to claim 6 , characterized in that the handle base body has at least two radial projections distributed around the circumference.
13 . The closure element according to claim 2 , characterized in that the flow interrupting device, in particular the tear-off edge, comprises a recess, in particular wherein the recess comprises at least one edge of at least 90 degrees.
14 . The closure element according to claim 1 , characterized in that the surface has at least two passage openings, in particular in the form of slots, which are closed with at least one sealing element.
15 . The closure element according to claim 14 , characterized in that the passage openings are positioned at least partially in the deeper area, and in particular are connected to the opening of the base body.
16 . The closure element according to claim 1 , characterized in that at least one sealing element covers the passage openings and/or can be fixed to the passage openings.
17 . The closure element according to claim 1 , characterized in that at least one sealing element is positioned on a support element, in particular wherein the support element has projections, which can be partially inserted into the passage openings for fixing the support element to the base body-so that it can be detachable.
18 . The closure element according to claim 17 , characterized in that the support element is essentially flat, and in particular extends essentially parallel to the underside of the base body.
19 . The closure element according to claim 18 , characterized in that the support element has at least one vertical projection, which is designed in particular for form-fit abutment with the underside of the base body and/or at least one horizontal projection, which is designed to receive at least one sealing element.
20 . The closure element according to claim 17 , characterized in that at least one sealing element and the support element are produced by means of 2 K spraying.

Description

The invention relates to a closure element for a drain opening of a sanitary basin, in particular a sink, comprising a base body that has an upper side and an underside opposite the upper side, wherein a handle device is positioned on the upper side, and wherein the upper side has a recess, in particular positioned centrally on the upper side, in which the handle device is positioned. The invention further relates to a closure system comprising a basin, in particular a sanitary basin, with a drain opening and a closure element for closing the drain opening. Although the present invention is generally applicable to any closure element, the present invention will be explained in relation to closure elements in drain fittings for sinks. Sinks, for example in kitchens, usually have a drain fitting that is used to drain dishwater from the sink. To prevent dirt from entering the pipe connected to the drain fitting, it has become common practice to use so-called strainer baskets for this purpose, which allow the dirty water to drain away and at the same time retain coarser dirt such as leftover food or similar. Furthermore, it has also become common practice to use a sealing plug instead of the strainer basket, which enables the sink to be sealed more reliably, for example in the event that dirt retention is not desired or insignificant when the drain is reopened. While strainer baskets are generally designed in the form of a flat bowl and have passage openings for the drainage of dirty water, sealing plugs are made of rubber or plastic, for example. In addition, a handle or a chain can also be positioned in the center of the plug in the usual way. The disadvantages include low quality, poor handling, for example if there is no handle but only a chain to pull out the plug, and poor fit, as the plug does not cover and seal the opening of a strainer basket, but only the drain opening directly. In addition, if a jet of liquid hits the plug at an unfavorable angle, for example from an outlet of a sanitary fitting located above the plug, the liquid can flow quickly in the direction of the handle and from there be directed upwards towards the user of the sanitary fitting or create a splash. One objective of the present invention is therefore to provide a closure element and a closure system that can be produced at low cost, which at least partially suppresses or prevents a spray of liquid in the direction of a user in a simple and reliable manner and at the same time provide high visual appeal, good feel, quality, and handling. A further objective of the present invention is to provide an alternative closure element and an alternative closure system. In one embodiment, the present invention solves the aforementioned problems with a closure element for a drain opening of a sanitary basin, in particular a sink, comprising a base body that has an upper side and an underside opposite the upper side, in which a handle device is positioned on the upper side, and wherein the upper side has a recess, in particular positioned centrally on the upper side, wherein the handle device is positioned and wherein at least one sealing element is positioned on the underside in such a way that, when the closure element is positioned at least partially in the drain opening of the sanitary basin, the closure element closes the drain opening in a liquid-tight manner. In one embodiment, the present invention solves the aforementioned problems with a closure system comprising a basin, in particular a sanitary basin, with a drain opening and a closure element for closing the drain opening according to one of claims 1-22. One of the advantages of this is that it provides a closure element with highly effective sealing in a particularly simple way, while at the same time offering good quality, feel, and operability. Another advantage is the high level of user satisfaction and the improved visual appearance. The term “sanitary” is to be understood in the broadest sense and refers, in particular in the claims, primarily in the description, generally to the kitchen area, the bathroom or laundry room area, and the heating area. The term “flow interrupting device” is to be understood in the broadest sense and refers, in particular in the claims, primarily in the description, generally to any device or apparatus having a section, surface, or area adapted to abruptly and/or with discontinuous curvature change the direction of flow of a liquid such that at least a portion of the liquid is directed substantially back in the original direction of flow of the liquid. The flow interrupting device provides the aforementioned effect of an abrupt change in flow direction, especially at slow and/or low liquid flow rates, compared to the volume of the recess and height of the handle device above the deepest area of the recess. Further features, advantages, and further embodiments of the invention are described below or are disclosed thereby. According to a preferr