DE102021111651A1 - drain filter - Google Patents

Abstract

The present invention relates to a drain filter (1) for preventing foreign bodies from entering the drain (2) of a washbasin or sink, a tub or the like, the drain filter (1) being formed from a flat ring-like or disc-like filter body (10). , which has a continuous filter or holding structure (101) in the circumferential direction of the filter body (10) at least on its outer circumference (1010), wherein numerous filter means (100) are arranged and/or formed on the surface of the filter body (10). The drain filter (1) according to the invention is characterized in that several filter sections (103 ) are arranged, wherein the filter sections (103) and / or at least one connecting section (104) between the filter or holding structure (100) and the filter sections (103) are at least partially flexible and / or elastic.

Description

technical field

The present invention relates to a drain filter according to the preamble of patent claim 1.

State of the art

According to the prior art, drain filters for preventing foreign bodies from penetrating into the drain of a washbasin or sink, a tub or the like are already known in various embodiments.

This is how the utility model specification shows DE 203 09 768 U1 a catching device for foreign bodies, in particular hair, for use at the outlet of a washbasin, which consists of a ring made of Velcro foil, which can be arranged surrounding the outlet of a washbasin with plastic spikes (velcro hooks) directed into the water flow.

In addition, from the DE 20 2011 101 098 U1 a hair catcher device for the drain of shower trays is known, which comprises a ring-shaped hair catcher arranged around the drain opening of the shower tray, in whose hooks or prongs catch floating hair in the draining water.

The disadvantage of the conventional drain filters is that their effective area is limited, so that the draining water does not accumulate. The wider the ring is designed, the more the water drainage is impeded. For this reason, the drains of sinks, showers and bathtubs, for example, are not adequately protected by conventional drain filters against the ingress of foreign bodies such as hair and can cause water to build up as a result.

Presentation of the invention

The present invention is based on the object of eliminating the aforementioned disadvantages and creating a drain filter by means of which the effective filter surface can be increased, but by means of a targeted design of an additional effective surface the flow capacity of the drain is impeded as little as possible.

According to the invention, the above object is achieved according to the preamble of claim 1 in conjunction with the characterizing features. Advantageous configurations and developments of the drain filter according to the invention are specified in the dependent subclaims.

According to the invention, a drain filter of the type mentioned at the outset is characterized in that a plurality of filter sections which are radially aligned in the direction of the center point of the filter body and are separated from one another by a recess and/or cut are arranged on the filter or holding structure, with the filter sections and/or at least one connecting section between Filter or support structure and the filter sections are at least partially flexible and / or elastic.

It was surprisingly found that the present invention, by the design of the flexible and/or elastic filter sections protruding into the drain due to the compressive force of the draining water, can hold a large part of the hair out of the draining water compared to conventional drain filters, without reducing the flow capacity of the particularly impede the process. The greater the pressure of the outflowing water, the more the filter sections incline, giving a larger space for the outflowing water. A further advantage of the outflow filter according to the invention can be seen in the fact that the effective surfaces of the filter sections, which are directed inwards due to the radial division, adapt flexibly and/or elastically to the pressure of the water running off.

character list

• In den Zeichnungen zeigen
  • 1 den erfindungsgemäßen Abflussfilter in einer vorteilhaften Ausführungsform in der Draufsicht;
  • 2 den erfindungsgemäßen Abflussfilter wie in 1 in der Draufsicht an einer Ablaufgarnitur;
  • 3 den erfindungsgemäßen Abflussfilter wie in 1 in perspektivischer Ansicht an einer Ablaufgarnitur;
  • 4 den erfindungsgemäßen Abflussfilter in einer weiteren vorteilhaften Ausführungsform in der Draufsicht;
  • 5 den erfindungsgemäßen Abflussfilter wie in 1 in perspektivischer Ansicht an einer Ablaufgarnitur.

Further goals, features, advantages and possible uses of the drain filter according to the invention result from the following description of an exemplary embodiment with reference to the drawings.

• Show in the drawings
  • 1 the drain filter according to the invention in an advantageous embodiment in plan view;
  • 2 the drain filter according to the invention as in 1 in the plan view of a drain fitting;
  • 3 the drain filter according to the invention as in 1 in a perspective view of a drain fitting;
  • 4 the drain filter according to the invention in a further advantageous embodiment in plan view;
  • 5 the drain filter according to the invention as in 1 in a perspective view of a drain fitting.

implementation of the invention

How out 1 As can be seen, the drain filter 1 according to the invention is formed from a flat ring- or disk-like filter body 10, e.g. made of plastic or another suitable material, and has a continuous filter or holding structure 101 in the circumferential direction of the filter body 10, at least on its outer circumference 1010, which preferably is designed as a support surface on a corresponding corresponding drain fitting. Numerous filter means 100 are arranged and/or formed on the surface of the filter body 10, by means of which foreign bodies are to be stopped. Filter means known from the prior art, such as hooks or prongs, can be considered here.

How out 3 As can be seen, the filter sections 103 are at a common inner radius I from their initial flat position (see 3 ) can be brought into an angled position in relation to the filter or holding structure 100. The effect of this is that the filter sections 103 can also intercept foreign bodies that have already passed the threshold to the outflow without affecting the water outflow.

The filter sections 103 are particularly advantageously designed in such a way that they have a free flow opening D in a defined, angled position about the center point M, on which they are aligned (see Fig 2 ) to ensure the uninterrupted drainage of the water.

How from the 1-5 As can be seen, the plan view of the individual filter sections 103 preferably has a wedge-shaped, triangular, trapezoidal or sector-shaped outline.

Also from the 1-5 it can be seen that the recesses 102 and/or cuts are advantageously designed in the manner of slits, it also being advantageous if the recesses 102 and/or alternate in size and/or in their extension in relation to their origin on the circumference of the filter body 10 Sections are provided. So are in the in the 1-3 In the illustrated embodiment of the drain filter, both slot-like recesses 102 are provided, which run almost to the edge region of the continuous filter or holding structure 101, while further on the inner circumference, the recesses 102 and/or cuts also extend over one or more sections of the filter body 10 in the circumferential direction. As a result, the recesses 102 and/or cuts can form, for example, connecting cuts 104, which are preferably web-shaped (see FIG 1-3 ). This "constriction" of the connection of the inwardly directed active surfaces of the filter sections 103 allows the flexibility to be further increased.

The show similarly 4 and 5 different characteristics of the recesses 102 and/or cuts, the filter sections 103 themselves having at least one further recess 103 and/or cuts here. This embodiment of the invention has the advantage that the flexibility of the active surfaces is further increased, for example by additional radial recesses 102 or severing, for example in the form of slits.

How from the 1-5 As can be seen, the filter sections 103 can also have a concave ( 4 and 5 ) or convex ( 1-3 ) have curvature.

Reference List

1

drain filter

2

waste set

10

filter body

100

Filter media of the filter body

101

filter or support structure

102

recess / cut through

102'

further recess / severance

103

filter sections

104

connecting gate

1010

Outer perimeter of the filter or support structure

D

flow opening

I

Common inner radius of the filter sections

M

center of the filter body

QUOTES INCLUDED IN DESCRIPTION

This list of the documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 20309768 U1 [0003]
• DE 202011101098 U1 [0004]

Claims (10)

Drain filter (1) for preventing foreign bodies from penetrating into the drain (2) of a washbasin or sink, a tub or the like, the drain filter (1) being formed from a flat ring-like or disk-like filter body (10) which has an in Circumferential direction of the filter body (10) has a continuous filter or holding structure (101) at least on its outer circumference (1010), numerous filter means (100) being arranged and/or formed on the surface of the filter body (10), characterized in that on the Filter or holding structure (101) has a plurality of filter sections (103) aligned radially in the direction of the center point (M) of the filter body (10) and separated from one another by a recess (102) and/or severing, the filter sections (103) and/or at least one connection section (104) between the filter or holding structure (100) and the filter sections (103) is at least partially flexible and/or elastic t are Drain filter (1) after claim 1 , characterized in that the filter sections (103) can be brought from their flat starting position at a common inner radius (I) into an angled position in relation to the filter or holding structure (100). Drain filter (1) after claim 2 , characterized in that the filter sections (103) are designed in such a way that they form a free flow opening (D) in a defined, angled position about the center point (M) on which they are aligned. Drainage filter (1) according to one of the preceding claims, characterized in that the filter sections (103) have a wedge-shaped, triangular, trapezoidal or sector-shaped outline when viewed from above. Drainage filter (1) according to one of the preceding claims, characterized in that the recess (102) and/or severing is designed in the manner of a slit. Drainage filter (1) according to one of the preceding claims, characterized in that there are alternating recesses (102) and/or cuts in their dimension and/or in their extent in relation to their origin on the circumference of the filter body (10). Drain filter (1) according to one of the preceding claims, characterized in that the filter sections (103) themselves have at least one further recess (102') and/or cut-through. Drainage filter (1) according to one of the preceding claims, characterized in that the recess (102) and/or severance additionally extends over one or more sections of the filter body (10) in the circumferential direction. Drainage filter (1) according to one of the preceding claims, characterized in that the connecting section (104) formed by the recess (102) and/or the severance is web-shaped. Drainage filter (1) according to one of the preceding claims, characterized in that the filter sections (103) have a concave or convex curvature on their side directed towards the center point (M).

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