FI130954B1 - Bottom sieve for a basin - Google Patents

Abstract

The object of the invention is a pool bottom strainer (1), which includes a body (2), which is designed to fit into place in connection with the outlet opening (10') of the pool (10). At least in the central part of the body (2), perforations or holes (3) forming the strainer part are formed. The body (2) is formed from the area of the central part into a concave or basket-like shape, whereby the edge area of the body (2) forms the edge part of the body (4). The edge part (4) is equipped with gripping elements (5), which, when the bottom strainer (1) is fitted, are dimensioned to extend upwards by a distance (h) from the upper surface (4a) of the edge part (4) so that the upper edge (5a) of the gripping elements (5) extends to the bottom of the pool above the level determined by (11).

Description

Pool bottom strainer

The object of the present invention is a pool bottom strainer, which includes a body that is designed to be adapted to the outlet opening of the pool, and at least — in the central part of the body, perforations or holes forming the strainer part are formed, that the body is formed from the area of the central part to be concave or basket-like, in which case the edge area of the body forms the body edge part.

Already known as different variations is the bottom strainer shown in figure 1 to be fitted in connection with the outlet opening formed in the bottom of the pool, which includes a body 2' formed by a basket-like strainer part, which has perforations or holes 3". Through them, the water can flow through the bottom strainer to the outlet opening 10'. In the middle of the strainer part there is a knob or handle 5' extending upwards and at the same point a positioning pin 6" extending below the strainer part, which can be pushed into the opening 21 arranged in the middle of the perforated plate 20' which is connected to the outlet opening 10" of the bottom strainer and which functions as an outlet valve.

At the same time, the bottom strainer is positioned in place. Typically, this kind of bottom strainer also has a gasket, with which the outlet hole can be plugged by positioning the bottom strainer via a positioning pin to a height that enables plugging in relation to the outlet opening.

The problem with such bottom strainers is their structure, where the knob 5" extending upwards in the center of the strainer part (Figure 1) is located at the point that collects the most filtered garbage and other dirt during use. In this case, when lifting the bottom strainer out of its place, several fingers must be pushed into the dirtiest part of the pool, i.e. the center of the bottom strainer.

A 25 — to the slatted part, so that the knob can be grasped and pulled out of its place. This one

In addition, such a dual-function structure (strainer and plug) easily causes accidental clogging of, for example, a container or other object placed at the bottom of the pool

S applying a vertical force to the bottom strainer, causing the bottom strainer to slide

I through the pin to the plugging position. Such a structure also easily leads to > 30 — that a dish or other item is placed on top of the bottom strainer at the bottom of the pool so that

S the flow of water is blocked as it is without the bottom strainer sliding into the clogging gun-

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The purpose of the present invention is to create a bottom strainer in which the aforementioned drawbacks are avoided.

This above-mentioned purpose is achieved with the characteristics according to the hallmarks of the invention, which are presented in the hallmark part of the attached independent claim 1.

With this bottom strainer according to the invention, compared to known bottom strainers, the advantage is achieved that the gripping elements arranged in the edge area and, when installed in place from its surface, extend upwards above the level of the bottom of the pool, allow water (liquid) to flow into the outlet of the pool unblocked past the bottom strainer.

The structure of the bottom strainer therefore does not block the water flow under any circumstances when it is in place. The location of the gripping elements in the peripheral area, and not in the center of the body according to the state of the art, enables the bottom strainer to be applied with one finger, if necessary, with the force that can be used to lift the bottom strainer hygienically and thus comfortably.

The attached independent patent claims present advantageous embodiments with which the above-mentioned purpose of the invention can be further implemented.

Next, the invention is explained in more detail by referring to the attached drawings, where:

Figure 1 shows a bottom strainer according to the state of the art, a 25 o Figure 2 shows a bottom strainer according to an advantageous embodiment of the invention, which is connected to the pool,

S

I Figure 3 shows the bottom strainer according to the embodiment of Figure two > 30 as an axonometric section view,

N Figures 4 and 5 show examples of external

of N edge shapings, and

Figures 6 and 7 show examples of grippers according to an advantageous embodiment.

Figure 2 therefore shows a base strainer according to an advantageous embodiment of the invention, marked with reference number 1. The figure also shows a basin 10, in which the base strainer 1 can be installed in place. The invention does not apply to pool 10, but is presented here to better understand the purpose of the inventive structures of the bottom strainer.

Here, the basic shape of the bottom strainer 1 is a circle and it includes the body 2 and the gripping elements 5. The body 2 consists of the central part forming the strainer part, which is formed in this area to be concave or basket-like. As an extension of the central part, especially its outer edge (away from the center), an edge part 4 preferably made of the same material is arranged, which here surrounds the central part as a ring-like element

In the central part, well-known perforations or holes 3 are arranged, through which water or liquid can flow through the outlet of the pool, for example into the drain when the bottom strainer 1 is installed. The perforations or holes 3 can also be located or extend into the area of the edge part 4, such as the elongated holes 3 in figure 2.

The material of the body of the bottom strainer 2 is a rigid material that does not bend at least slightly when using manual force. This type of material is typically the metal used in bottom filters. Other materials for the bottom strainer body are plastic, ceramic, rubber, silicone, glass, composite (fiberglass, carbon fiber). Other materials can also be used

N 25 — use. The shape of the frame 2 has been achieved in a way suitable for the material. Eg-

Any metal can be pressed or bent into shape. Other methods are, for example, casting with different methods. The surface of the body 2 can also be coated with body ma-

With different (or the same) material from S terial. The coating material can be selected

For example, from a group of materials from which dirt comes off more easily than other frame materials - > 30. An example can be mentioned polytetrafluoroethylene (i.e. Teflon).

N The edge part 4 is thus formed as an extension of the outer edge of the central part. In this case

N edge part 4 extends radially outwards from the center of the circular bottom strainer 1. Thus, the upper surface 4a of the edge part 4 is a flat or substantially flat ring-like surface, which is located on the same plane, or in other words flanks the imaginary plane passing through the upper surface 4a. Here, therefore, the shape of the edge part 4, and especially its outer edge 4b, is a circle. This shape therefore corresponds to the 10" shape of the 10" outlet of the pool shown in the pictures. Naturally, the shape of the outlet 10" can vary, for example polygon or oval, in which case the shape of the bottom strainer 1 can be adapted to the shape of the outlet 10". Thus, the shape of the edge part 4 and especially its outer edge 4b is a polygon or an oval. Other forms are also possible and the ones presented here are only examples.

In addition to this, the outer edges 4b have a design 4b', the advantageous embodiments of which are shown in Figures 4 and 5. The design 4b' is here made below the outer edge 4b from the outward extension of the edge part 4, bent or, for example, cast, depending on the material. The purpose of this is both to strengthen the structure of the bottom strainer and to facilitate and in general enable the bottom strainer 1 to be supported in connection with the outlet opening 10" of the basin 10. In the cross-sectional direction, the spout forms a structure that removes the rounded or otherwise sharp edge of the outer edge, thereby preventing the otherwise too sharp edge part and further the entire bottom strainer from getting caught and wedged on the edge of the pool outlet. —The bottom strainer 1 according to the invention includes gripping elements 5 arranged in its edge part 4. An example of gripping elements 5 according to an advantageous embodiment of the invention is shown in Figures 2 and 3. Here, the gripping elements 5 are a part made from a separate piece in relation to the body 2 during the manufacturing stage, which can be the same or different material than body 2. Examples of materials are given above. grab-

N 25 — in order to attach the cleats to the edge part 4, a cross-section is formed in Fig. 3

The fastening opening 4c shown as O, through which the grip design 5d made in the lower part of the grip elements 5 is carried to the side opposite to the upper surface 4a of the edge part 4

S naos 4. Thus, the gripping elements 5 are attached either releasably or fixedly

I to the edges of opening 4c. The number of gripping elements 5 is not limited in any way, > 30, but taking into account the limited length (circumferential length) of the edge part 4, there are

S nakin one, but preferably their number is 1 — 12. Grippers, regardless of their number, can cover 5 — 100% of the length of the edge part 4.

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In other respects, the gripping elements 5 therefore extend away from the upper surface 4a of the edge part 4, in other words, when the bottom strainer 1 is installed, the gripping elements 5 are dimensioned to extend upwards by a distance h from the upper surface 4a of the edge part 4. It is essential that the dimensions of the gripping elements 5 have been chosen so that in this case the upper edge 5 5a of the gripping elements 5 extends to the level above the bottom 11 of the pool. The upper edge of the gripping element 5 refers to the part of the gripping element 5 that extends furthest by the above-mentioned distance h from the plane passing through the upper surface 4a of the edge part 4 or from the uppermost point of the upper surface 4a (when installed in place). The distance h depends on the structure of the bottom strainer and the basin 10, for which the bottom strainer 1 is suitable, but typically a distance of 0.5—3 cm. In this way, the upwardly extending upper edge 5a realizes one of the goals of the invention, in which the bottom strainer does not accidentally block the outlet opening 10' or make it possible to block it. In this case, for example, flat-surfaced dishes, such as plates or pot bottoms, which would typically otherwise be placed on the bottom of the basin, rest against the upper edge 5a of the gripping members 5, allowing water to flow, for example — between the underside of the plate and the bottom 10' of the basin to the outlet opening 10". In particular, if the length of the gripping elements 5 is 100% of the length of the edge part 4, it should be taken into account that even then the water can completely flow past the gripping elements 5 covering the edge part 4. This can be implemented, for example, with holes passing through the gripping surfaces 5a and 5b of the gripping elements 5 described below. This can be realized — also by forming the dimension of the upper edges 5a to the level above the bottom 11 of the basin, so that the upper edges 5a are at different levels in the longitudinal direction of the gripping elements 5.

Figure 3 shows the cross-sectional shape of the gripping members 5, which shows

N 25 — two adhesion surfaces or adhesion areas 5b and 5c. Grip surfaces 5a and 5b are here

O elongated in the longitudinal direction of the edge part 4 (or in the circumferential direction of the edge part 4). Their basic direction is transverse to the direction of the plane of the upper surface 4a of the edge part 4, i.e.

S installed on a slope upwards or at an upward angle. Thus, the upper edge of the attachment organs 5

I 5a remains between said adhesion surfaces or adhesion areas 5b and 5c. A force can be applied to the first adhesion surface or adhesion area 5b, which is > 30 inches out of these, to lift the bottom strainer 1 upwards, out of place. The first infectious

N pin surface 5a can be shaped with grip surfaces 5b going in different directions to reduce the force

N to get timing belt alignment. The force is illustrated by the arrow F in figure 3. The force F is therefore produced by a person who can apply it with one finger to the gripping elements 5 arranged in the edge part 4. In this case, when the force F is applied to the gripping elements 5, the bottom strainer bulges out of its place, resting on the opposite edge of the bottom strainer 1 in relation to the gripping elements 5. to the location at the 10' edge of the outlet. In this sense, it must also be noted that the above-mentioned unique design 4b' of the outer edges 4b is important in terms of the functionality and durability of such a bottom strainer equipped with a new structure.

The gripping elements 5 according to the invention preferably also include a second gripping surface or gripping area 5c, which is inward, i.e. towards the center of the bottom strainer 1, so that the first and second gripping surfaces or gripping areas 5b and 5c can be gripped with tweezers (e.g. thumb and forefinger ) from the edge area 4 of the bottom strainer 1. Consequently, the grippers 5 and further the bottom strainer 1 can be gripped in another way throughout its handling (removal and reinsertion) in such a way that the fingers do not come into contact with the concave central part and the dirt still accumulated in it. The second gripping surface 5c here is a surface extending diagonally from the upper surface 4a of the edge region 4 towards the upper edge 5a, which therefore acts as a counter surface to the first gripping surface 5b, enabling the above-mentioned tweezer grip.

The grippers 5 presented above is just one example of a working solution. Figures 6 and 7 show embodiments of gripping elements that are made directly to the material of the edge part 4 of the frame 2. In these, the features corresponding to figure 3 are formed in the strip or flap formed between the incisions or cuts 6 made in the edge area 4 of the frame. These corresponding features are formed, for example, by bending or casting them into a strip. The corresponding brackets shown in Figure 3 are numbered

N 25 — in Figures 6 and 7 with the same reference numbers.

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— The invention is not limited only to the presented embodiments, but can be

S owes in many ways within the scope of protection defined by the patent requirements.

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Claims (9)

Patent Claims 1. Pool bottom strainer (1), which includes a body (2), which is designed to fit into place in connection with the outlet opening (10) of the pool (10) and whose body (2) has perforations or holes (3) forming the strainer part at least — in the middle part , that the body (2) is formed from the area of the central part to be concave or basket-like, whereby the edge area of the body (2) forms the edge part (4) of the body, characterized by the fact that the edge part of the body (4) is equipped with at least one gripper (5) which with the bottom strainer (1) fitted in place, they are dimensioned to extend upwards from the upper surface (4a) of the edge part (4) of the distance (h) so that the upper edge (5a) of the gripping elements (5) extends above the level defined by the bottom (11) of the basin , and that the outer edges (4b) of the edge part (4) have a design (4b"), which is a groove bent from the outward extension of the edge part (4) made below the outer edge (4b), which enables the bottom strainer (1) to rest on the basin (10) ) in connection with the edge of the outlet opening (10). 2. A bottom strainer according to claim 1, characterized in that the upper surface (4a) of the edge part (4) is located on the same plane that parallels the imaginary plane passing through the upper surface (4a). 3. A colander according to one of the above-mentioned claims 1 or 2, characterized by the fact that the shape of the outer edge (4b) is a circle. 4. A bottom wing according to one of the above-mentioned claims 1-3, characterized in that the shape of the edge part (4) is a polygon or an oval. 2 25 < 5. A bottom strainer according to one of the above-mentioned claims 1-4, characterized by the fact that perforations or holes (3) are formed in the edge part (4). 2 I 6. A bottom strainer according to one of the above-mentioned claims 1-5, characterized > 30 — in that the gripping elements (5) include at least two gripping surfaces or gripping areas S (5b and 5c), the basic direction of which is transverse to the upper surface (4a) of the edge part (4) ) from the direction of plane N, whereby the upper edge (5a) of the gripping elements (5) remains between said gripping surfaces N or gripping areas (5b and 5c), and that the outward gripping surface or gripping region (5b) can be aligned with the bottom strainer (1) upwards, away the lifting force. 7. A bottom strainer according to one of the aforementioned claims 1-6, characterized — in that the gripping elements (5) include at least two gripping surfaces or gripping areas (5b and 5c), whose basic direction is transverse to the direction of the plane of the upper surface (4a) of the edge part (4), whereby the upper edge (5a) of the gripping elements (5) remains between said gripping surfaces or gripping areas (5b and 5c), and that the first and second gripping surfaces or gripping areas (5b and 5c) can be gripped with tweezers from the edge area of the bottom strainer (1) (4). 8. A bottom strainer according to one of the above-mentioned claims 1-7, characterized in that the length of the gripping elements in the longitudinal direction of the edge part is 5-100% of the length of the edge part. 9. A bottom strainer according to one of the above-mentioned claims 1-8, characterized in that the number of gripping elements is 1-12. 0 N O N K <Q O I = O O O O N N O N