FI77498B - GOLVBRUNN ELLER LIKNANDE. - Google Patents

Description

1 77498

Floor drain or similar

The invention relates to a floor drain or the like, which floor drain comprises a body-part 5 with a water trap, a collar part with a lower opening above the water trap and an upper cover structure comprising a clamping ring with a funnel-like substantially conical clamping surface and clamping means 10 a funnel-shaped clamping surface for clamping a floor mat or the like between said clamping surfaces.

There are quite many types of floor drains, because different floor structures place different requirements on floor drains. Sometimes the floor drain is required to have the lowest possible height, sometimes the best possible traction in relation to its size, etc. In some cases, it is important that the cleaning of the floor drain should be as simple as possible.

In particular, the present invention relates to floor-20 wells for use in floor structures covered with plastic mats. Known floor drains used in connection with plastic mats have proven to be problematic in terms of both installation and functionality. Installation generally requires that the plastic mat be bent parallel to the downhole, i.e. at an angle of about 90 ° to the floor surface, which steep bending - depending on the mat material - often requires the mat to be heated. Such a heated carpet cannot usually be re-scrubbed to remove it and reassemble it in a floor drain, but the carpet must be completely replaced if the floor drain has to be dismantled for one reason or another. Known floor wells comprise a clamping ring which, in order to hold the mat in place, clamps the mat radially against the vertical edges of the flow opening or the collar part. The outer circumference of the clamping rings may have protrusions 2 77498 for the purpose of having the mat firmly and tightly pressed between the clamping ring and the collar part. It has been found that with known floor-membrane structures the connection between the mat and the collar structure 5 cannot be made tight, because the mat materials used today, such as PVC, which tend to deform as a result of temperature fluctuations, place quite high demands on the sealing arrangement. Temperature changes cause the mats to expand and contract. 10 As the carpet expands, it tends to be bagged near the floor drain cover. Moisture and water are easily absorbed into such a bag as a result of the capillary effect, whereby water passes through the smallest gaps between the mat and the collar tube from the floor drain under the mat. Over time, the water that collects in the bag will damage the carpet and the substrate below it. Accumulated water usually also contains bacteria that accelerate pollution. Such a bag can sometimes act like a bellows whenever you step on it, which speeds up the passage of water under the mat.

20 As the carpet shrinks and expands in turn, it is subjected to stresses, which often lead to tearing of the carpet, especially in the sharply bent part of the carpet. Repairing the perimeter of a contaminated floor drain is a laborious and expensive operation as it requires the floor mat ir-25 to be mounted and replaced.

It is an object of the present invention to provide a floor drain structure which is easy to install and which does not cause the above-mentioned operating problems. To achieve this object, the floor drain according to the invention is mainly characterized in that the clamping surface of the deck structure is at an angle cC to the upper surface of the deck structure, which angle is 5-30 °.

The invention is based on the idea of forming a clamping ring in a floor drain which bends the floor mats at the floor drain only slightly and at the same time a good seal can be obtained between the mat and the collar part. The main advantages of the floor drain according to the invention are that it presses the floor mat tightly against the collar part, whereby water cannot accumulate under the mat, which would ruin the floor drain, the floor drain can be dismantled without breaking or new floor mat, the floor drain is easy to install and its cover structure allows the use of carpets of different thicknesses. In addition, in connection with the floor drain according to the invention, it is possible to use upright, durable and only slightly deformable glass fiber mats with temperature changes, the poor bendability of which can hardly be changed by heating to facilitate installation.

The invention will now be described in more detail by means of two embodiments thereof with reference to the accompanying drawing, in which Figure 1 shows a floor drain representing the prior art, Figure 2 shows a floor drain according to the invention with a separate deck and collar and Figure 3 shows a floor drain according to the invention. consists of one part and whose collar part is one part with the floor drain body part. Figure 1 shows a known floor drain comprising a body part 101 with a tongue 102 forming a water trap. A collar part 103 is arranged on the body part 1, at the lower end of which an annular rubber seal 104 is fitted, which seals the collar part against the body part 30. The collar portion 103 is adapted to rest against the shoulders 106 and 107 formed in the concrete floor structure 105. The cover structure, generally indicated by reference numeral 108, comprises a clamping ring 109, and a cover 111 with apertures 110 thereon, which acts as a screen. The clamping ring 109 presses the floor mat 4 77498 112 radially against the vertical inner surface 113 of the collar portion 103 to hold it in place. In practice, the clamping ring 109 is not able to seal the mat 112 against the surface 113 tightly enough, but small gaps remain between the surface and the mat 5, through which water can be absorbed and accumulated under the mat due to the capillary effect, ruining the well area before long.

Figure 2 shows a floor well according to the invention. The floor drain comprises a body portion 201, a tongue 202 10 for forming a water trap, a collar portion 203 above the water trap, an annular rubber seal 204 fitted thereto at its lower end to seal it against the body portion, and a cover structure generally designated 208. The collar portion 153 supports against the shoulders 206 and 207 formed in the field 205. The floor mat 212 is arranged between the cover structure 208 and the collar portion 203. The mat 212 is pressed tightly against the funnel-like tightening surface 213 of the collar portion 203 by the cover structure 208 fitted on the mat. The cover structure 208 20 comprises, against this, a funnel-shaped, corresponding funnel-shaped clamping surface 214 which presses against the tightening surface 213 of the collar part of the mat 212. relative to the upper surface 215 of the deck structure. The second clamping surface of the cone-25 is easy to manufacture and easily provides a firmly secured attachment to the mat 212. The angles are 5-30 °, whereby the bending of the mat 212 on the circumference of the cover structure 208 remains gentle. Due to the slight need for bending, the mat 212 can be installed very easily without heating and does not tend to crack in use.

The cover structure 208 comprises a clamping ring 209 having six evenly spaced and equidistant centers of the clamping ring against a hole 216 against screws 35 (not shown) 35 which tighten the clamping ring against the collar portion 203 using the corresponding holes 217 therein, using 212 presses very tightly against the tightening surface 213 of the collar part. The tightening ring 209 tapers towards its outer circumference so that it 5 does not cause a harmful point of discontinuity on the surface of the floor structure 205. The lower surface 218 abutting the collar portion 203 of the tension ring 209 is substantially horizontal and forms an angle jf> in the untensioned, i.e., stress-free state, against the corresponding support surface 10 219 of the collar portion, which angle is 1-3 °. When the clamping ring 209 is tightened in place due to the elasticity of the clamping ring /? = 0. Due to the angle effect, the clamping surfaces 213 and 214 are pressed against each other with high force even if the clamping ring 209 is made of a relatively soft material such as plastic. Said six holes 216 are preferably located in the lower surface of the clamping ring 209 located against the collar part 203, whereby it is not necessary to make holes in the mat 21 for screws. In addition, the holes made in the mat 212 would be disadvantageous in providing a good seal between the mat and the collar portion 203.

In addition, the cover structure 208 comprises a cover 211 provided with openings 210, which is fitted on a recess formed in the upper part of the clamping ring 214 so that the upper surface of the clamping ring 216 and the upper surface of the cover are in the same plane. The cover 211 covers the holes 217 of the clamping ring and can be easily lifted up to clean the floor drain.

Figure 3 shows another embodiment of a floor-30 well according to the invention. The embodiment shown in Fig. 3 differs from the embodiment according to Fig. 3 in that the clamping ring 309 and the cover acting as a screen are one piece. Thus, the clamping ring 309 comprises water openings 310 in addition to holes 317 for screws, with which screws the clamping ring is fixed to the collar-like part 303. 49498. The embodiment according to the figure also differs from the above embodiment in that the collar part and the body part are one piece 301. surrounded by cement on all sides.

The device well according to the invention enables the floor mat to be attached to the floor as a detached installation, i.e. without the need for gluing, which may be advantageous in temporary solutions. However, in a "normal installation", it is advantageous to apply glue under the carpet at least in the immediate vicinity of the floor drain.

The floor drain according to the invention (with the exception of the sealing ring and the tightening screws) can advantageously be made of PVC plastic.

The invention has been described above by means of only two of its preferred embodiments. Within the scope of the appended claims, the invention can be implemented in many ways. Thus, the tightening surfaces of the clamping ring and the collar portion may differ slightly from the cone shape: in some applications where high surface pressure is required between the mat 20 and the collar portion, the clamping surface of the cover structure may be curved so that its curvature differs from the collar portion. In this case, an annular sealing line or two such centrally located sealing lines is obtained between the mat and the collar part, which ensures good tightness even if the first sealing line is not completely tight, for example due to a material defect. As the tightening means for tightening the deck structure against the mat, it is not necessary to have a hole-screw system, and of course the number of holes does not have to be six. With an angle <Xkas, the more the carpet has to be bent, which is disadvantageous, and therefore it is recommended to use a small angle. Instead of a plastic mat, the floor drain according to the invention is preferably also suitable for use in connection with a tiled floor 35, whereby a tile frame made of plastic comes into contact with the cover structure instead of a plastic mat.

Claims (6)

A floor well or the like, comprising a well (202,302) body portion (201, 301), an above-water outlet, a discharge opening neck portion (203,303), and a top portion (208,308) comprising a clamping ring (209,309) having a substantially cone-shaped press surface (214,314), and clamping means (216) for pressing it against a corresponding funnel-shaped press surface (213,313) located in the neck portion (213,313) or the like between said pressing surfaces (214,213,314,313), characterized in that the pressing surface (214,314) of the lid part (204,314) is angular with respect to the upper surface (215,315) of the lid part, which angle is 5-30 °. 2. A floor well according to claim 1, characterized in that the substantially cone-shaped press surface of the lid part is curved and its curvature deviates from the shape of the press surface in the neck part. 3. A floor well according to claim 2, characterized in that the curvature of the pressing surface of the lid part is greater than the curvature of the neck part, the pressing surfaces which are adapted to each other press the floor mat against the neck part along two annular lines. 25 4. Floor well according to claims 1, 2 or 3, characterized in that the clamping ring (209,309) tapers towards its periphery. Floor well according to any of the preceding claims, characterized in that the lower surface of the clamping ring (209,309) which is laid against the neck part (203,303) is substantially horizontal and forms, where the clamping ring is in an unstressed state, ie. is free from stresses, an angle / mot to the corresponding supporting surface of the neck portion, which angle (i is 1-3 °. Floor well according to any of the preceding claims, characterized in that the neck part and the body part are one and the same piece (301).