EP2281955A1 - Drain with plug and overflow function of the plug - Google Patents
Drain with plug and overflow function of the plug Download PDFInfo
- Publication number
- EP2281955A1 EP2281955A1 EP10164527A EP10164527A EP2281955A1 EP 2281955 A1 EP2281955 A1 EP 2281955A1 EP 10164527 A EP10164527 A EP 10164527A EP 10164527 A EP10164527 A EP 10164527A EP 2281955 A1 EP2281955 A1 EP 2281955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plug
- drain
- head
- elastic
- flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 10
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C1/232—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms combined with overflow devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C1/2306—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms the plug being operated by hand contact
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C2001/2311—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms the actuation force being magnetic or electromagnetic
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/22—Outlet devices mounted in basins, baths, or sinks
- E03C1/23—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms
- E03C2001/2317—Outlet devices mounted in basins, baths, or sinks with mechanical closure mechanisms transmission of actuation force involves a spring
Definitions
- the present invention relates to a drain for baths, sinks, washbasins or other collection basins of a liquid.
- a drain for baths comprises a substantially cylindrical body suitable for being housed in a hole made in the bath and communicating with a drain pipe.
- Such body terminates at the bottom with a grid and at the top with an annular flange which defines the intake for the passage of water into the drain body.
- a plug is lodged in the drain body and comprises a head bearing a sealing element suitable for cooperating with the inner rim of the annular flange to hermetically seal the intake for the passage of the water when the head of the plug is level with said flange.
- the head of the plug projects above the drain body, leaving the passage of the water towards the drain open.
- the head is manually pressed downwards, so that it rests with its sealing element on the flange, hermetically sealing such passage.
- the plug projects upwards from the drain, and therefore from the bottom of the bath is considered by some to be a disadvantage, for example when the area where the plug is situated is also used for having a shower.
- the protruding plug gets in the way and may inadvertently be pressed down, closing the drain.
- a protruding plug negatively influences the aesthetic appearance of the bath in that it interrupts the continuity of the bottom of the bath.
- the overflow requires that a hole be made in the side wall of the bath, that a cover plate be attached to conceal said hole, allowing the water to pass through it and that connection to a drain pipe be provided, for example between the bath and the structure it is mounted in.
- a drain pipe for example between the bath and the structure it is mounted in.
- the purpose of the present invention is to propose a drain able to overcome the drawbacks complained of above.
- - figure 1 is an axial cross-section of the drain according to the invention, in a first embodiment, with the plug in the normal, open position;
- - figure 2 is an axial cross-section of the drain with the plug in the closed position, preventing the passage of water;
- - figure 3 is an axial cross-section of the drain with the plug in the open position, permitting the passage of water when acting as an "overflow";
- FIG. 4-6 are cross-section views, analogous to those above, of a drain in a second embodiment
- FIG. 7-9 are cross-section views, analogous to those above, of a drain in a third embodiment
- FIG. 10 and 11 are cross-section views of a drain in a further embodiment variation, respectively with the plug in the position preventing the passage of water and with the plug permitting the passage of water when acting as an "overflow";
- FIG. 12 shows a tool for unscrewing the flange of the drain from the drain body.
- reference numeral 1 globally denotes a drain according to the invention in its entirety.
- the parts common to the various embodiments of the drain will be identified by the same reference numerals.
- the drain comprises a substantially cylindrical drain body 10 suitable for being housed in a hole made in a bath, washbasin, sink or the like.
- the body 10 terminates underneath with a bottom grid 12 and above with an annular flange 14 which defines the intake 16 for the passage of water to the drain body 10.
- a plug 18 is lodged in the drain body 10 to open/close the intake 16 and thereby allow/prevent the passage of water to the drain pipe.
- the plug 18 comprises a plug body 20 and a head 22 bearing a sealing element 24 suitable for cooperating with the inner rim 14' of the annular flange 14 to hermetically seal the intake 16 when the head 22 of the plug is level with said flange.
- the head 22 is axially movable in relation to the plug body 20 between a lowered position, wherein said head 22 is below the flange 14 to open the intake, and a raised position, wherein said head 22 is level with the flange 14 to hermetically seal the intake 16.
- the plug 18 never protrudes above the annular flange 14, and therefore above the floor of the bath, sink or the like.
- the plug 18 is of the type with a trip movement, wherein the head 22 passes automatically, for example when thrust by an elastic element, from the lowered position to the raised position following pressure exerted manually upon it.
- Such type of plug is however known and does not require further detailed explanation herein.
- the sealing element 24 when the head 22 of the plug is in the raised position, the sealing element 24 lies axially against its respective seat 26 made in the flange.
- the sealing element 24 is an o-ring fitted on a respective annular seat 24' made in the side wall of the head 22.
- the seat 26 made in the flange 14 is a concave shape facing downwards so as to define an axial abutment shoulder for the sealing element 24.
- the upper surface of the head is aligned with that of the flange, so as to create a continuous and even surface.
- the plug 18 is supported by the drain body by means of elastic overflow means.
- elastic means are calibrated so as to yield axially above a predefined level of pressure acting on the head 22 of the plug, so as to cause a lowering of the plug in relation to the drain body 10. Consequently, starting from a position of normal closure of the drain intake 16, the entire plug 18 translates axially downwards opening said intake 16 and thereby allowing the water to empty into the drainpipe.
- the pressure acting on the head 22 contrasting the force opposed by the elastic elements is the hydrostatic pressure of water contained in the bath, sink or the like.
- the drain according to the invention therefore also acts as an overflow device.
- said yielding overflow device comprises an elastic element 30 by means of which the plug 18 rests on the bottom grid 12 of the drain body 10.
- the contrasting force of the elastic element 30 is chosen so as to enable compression of the elastic element, and thereby lowering of the plug when such pressure value is reached or exceeded.
- such overflow device is self regulating, in the sense that when the water level returns equal to or below the maximum threshold level, the plug 18 automatically returns to its initial position closing the intake 16, thrust upwards by the elastic element 30.
- the elastic element 30 also acts as a return mechanism to bring the plug into the raised position closing the intake 16 when the hydrostatic pressure exerted by the water on the plug falls below the pressure exerted by the elastic element 30 on the said plug.
- the contrasting force of the elastic element 30, in other words its elastic constant is adjustable, for example by a plumber, so as to choose the maximum level of water admissible.
- the elastic element 30 is a spring, for example a helical spring, for example a conical helical spring.
- the elastic element 30 is less rigid than the spring inside the plug.
- the plug body 20 is connected underneath, for example by screwing, to a housing and guiding bush 32 of the elastic element 30.
- the bottom grid 12 of the drain body 10 comprises a tubular axial portion 34 which a guide stem 36 extending from the bottom of the bush 32 is inserted in so as to slide. Moreover, such tubular axial portion 34 defines above an annular support plane 38 of the elastic element 30.
- the elastic overflow elements comprise magnetic overflow means, operatively connected to the plug 18 and to the drain body 10 and calibrated so as to yield over a predefined pressure value acting on the head 22 of the plug as to cause a lowering of the plug 18 in relation to the drain body 10.
- the entire plug 18 translates axially downwards, opening said intake 16 and thereby allowing the water to discharge towards the drain pipe.
- the magnetic overflow means comprise at least a first magnetic element 50 joined to either the plug 18 or the drain body 10, and a second magnetic or ferromagnetic element 52 joined to the remaining between the drain body 10 and the plug 18.
- Said elements 50, 52 are suitable for cooperating to enable/prevent the lowering of the plug 18.
- the pressure acting on the head 22 contrasting the force of attraction between the first 50 and second 52 magnetic elements is the hydrostatic pressure of the water contained in the bath, sink or the like. Consequently, once a maximum level of water has been established and the corresponding pressure value acting on the head 22 of the plug has been calculated, the force of attraction of the magnetic overflow means is chosen so as to enable the reciprocal distancing of the magnetic elements 50, 52 and thereby the lowering of the plug, when such pressure value is reached or exceeded.
- the lowering of the plug 18 occurs when the pressure value reaches or exceeds the force of reciprocal attraction between the magnetic elements 50, 52.
- the first magnetic element 50 is connected to the bottom grid 12, for example positioned in a special seat made inside it, and the second magnetic or ferromagnetic element 52 is connected to the plug 18.
- such overflow device is self-regulating, in the sense that when the water level returns equal to or below the maximum threshold level defined, the plug 18 automatically returns to its initial position closing the intake 16, thrust upwards by the return means of the plug 18, for example elastic and/or magnetic.
- the return means are therefore able to return the plug 18 to the position prior to lowering, when the pressure acting on the head 22 falls below the predefined value.
- the plug 18 is supported on the bottom grid 12 by an elastic element 30.
- the return means comprise an elastic element 30.
- the contrasting force of the elastic element 30, in other words its elastic constant is adjustable, for example by a plumber, so as to choose the maximum level of water admissible.
- the elastic element 30 is a spring, for example a helical spring, for example a conical helical spring.
- the elastic element 30 is less rigid than the spring inside the plug.
- the return means of the plug 18 comprise a third magnetic element 54, joined to the drain body 10 and suitable for repelling the magnetic element 50, 52 joined to the plug 18.
- the first 50 and the second 52 magnetic elements are reciprocally distanced on account of the hydrostatic pressure of the water present in the bath, which acts on the head 22 of the plug.
- the magnetic element 52 joined to the plug is positioned near the third magnetic element 54, of the same polarity as that of the magnetic element 52, which therefore tends to repel the magnetic element 52 towards a raised (or closed) configuration of the plug.
- the third magnetic element 54 repels the magnetic element 52 joined to the plug 18, so that the latter returns to the position prior to lowering ( figure 5 ).
- the first 50 or second 52 magnetic element and the third magnetic element 54 are distanced along the grid wall 56 so as to axially define the stroke of the magnetic element 50, 52 joined to the plug 18.
- the magnetic element 52 joined to the plug 18 is movable between a first configuration (shown in figure 8 ), in which it is in contact with the first magnetic element 50, and a second configuration ( figure 7 or 9 ), in which the magnetic element 52 is positioned in correspondence with the third magnetic element 54.
- the bottom grid 12 of the drain body 10 identifies an aperture which the guide stem 36 of the plug 18 is able to slide in.
- the guide stem 36 has a portion of free extremity 58, opposite the portion facing the head 22, bearing the magnetic element 50, 52 joined to the plug 18.
- the portion of free extremity 58 of the stem 36 extends into a compartment 60 defined by the grid wall 56.
- the guide stem 36 is axially mobile inside the compartment 60 defined by the wall 56.
- the compartment 60 can be closed, for example sealed tight, by means of a bottom plate 64 screwable to the grid wall 56.
- the plug body 20 is connected underneath, for example by screwing, to a housing and guiding bush 32 of the elastic element 30.
- the bottom grid 12 of the drain body 10 comprises a tubular axial portion 34 extending downwards from the bush 32 which the guide stem 36 is inserted in so as to slide. Moreover, such tubular axial portion 34 defines above an annular support plane 38 of the elastic element 30.
- an elastic return element 30' acting on the plug 18, for example on the magnetic element 52 borne by the guide stem 36 is placed on the bottom plate 64 sealing the compartment 60, instead of the third magnetic element 54,.
- said elastic return element 30' is a cylindrical helical spring.
- Said elastic return element 30' substantially performs the same function as the elastic return element 30 described for the embodiments of figures 1-6 .
- the positioning of said elastic return element 30' inside the compartment 60, sealed by the removable bottom plate 64 makes it possible to rapidly and easily vary the recoil strength exerted by said elastic element, by simply removing the bottom plate 64 from the grid wall 56 and inserting one or more spacers 70 able to increase the compression of the spring 30' between said spring 30' and the bottom plate 64.
- the drain thus conceived of makes it possible to avoid making a lateral hole and connecting said hole to the drain pipe.
- the drawbacks of the overflow devices of the prior art complained of above are brilliantly overcame.
- a guide element 40 able to slide along the walls of the drain body 10 is joined to the plug 18.
- annular flange 14 is detachably connected to the drain body 10, for example by screwing, so as to allow the extraction of the plug 18 and access to the bottom grid 12.
- FIG 12 shows a specially configured tool 80 for unscrewing the annular flange 14 from the drain body 10.
- Said tool 80 is in the shape of a fork comprising a pair of elastic arms 82 suitable for being inserted in the intake 16 of the drain when the plug 18 is in the lowered position, so as to engage the inner rim 14' of the annular flange.
- the elastic arms 82 end in an appendage 84 counter-shaped to said inner rim 14'.
- the latter has at least one circumferential shoulder 14", preferably two, diametrically opposite, against which an appendage 84 of an arm 82 abuts. This way, by rotating the tool 80, the annular flange 14 is unscrewed from the drain body 10.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
Description
- The present invention relates to a drain for baths, sinks, washbasins or other collection basins of a liquid.
- In one known embodiment, a drain for baths comprises a substantially cylindrical body suitable for being housed in a hole made in the bath and communicating with a drain pipe. Such body terminates at the bottom with a grid and at the top with an annular flange which defines the intake for the passage of water into the drain body.
- A plug is lodged in the drain body and comprises a head bearing a sealing element suitable for cooperating with the inner rim of the annular flange to hermetically seal the intake for the passage of the water when the head of the plug is level with said flange.
- Normally, the head of the plug projects above the drain body, leaving the passage of the water towards the drain open. When the user wishes to fill the bath, the head is manually pressed downwards, so that it rests with its sealing element on the flange, hermetically sealing such passage.
- The fact that the plug projects upwards from the drain, and therefore from the bottom of the bath is considered by some to be a disadvantage, for example when the area where the plug is situated is also used for having a shower. In this case the protruding plug gets in the way and may inadvertently be pressed down, closing the drain. Moreover, a protruding plug negatively influences the aesthetic appearance of the bath in that it interrupts the continuity of the bottom of the bath.
- Another drawback, especially for baths, is the presence of the so-called "overflow", in other words of the hole made in the side wall of the bath and the relative pipe connecting the hole to the drainpipe.
- In fact the overflow requires that a hole be made in the side wall of the bath, that a cover plate be attached to conceal said hole, allowing the water to pass through it and that connection to a drain pipe be provided, for example between the bath and the structure it is mounted in. In the case of free-standing baths which are fully visible, for example in the centre of a bathroom, the presence of the overflow is a problem felt even more strongly. The negative impact on the aesthetic appearance of the bath, not only of the presence of the side hole but also of the pipe connecting the overflow to the drainpipe, is evident.
- The purpose of the present invention is to propose a drain able to overcome the drawbacks complained of above.
- Such purpose is achieved by a drain according to
claim 1. The dependent claims describe preferred or advantageous embodiments of the drain according to the invention. - The characteristics and advantages of the drain according to the invention will be evident from the description below, made by way of a non-limiting example of its preferred embodiments with reference to the attached figures, wherein:
- -
figure 1 is an axial cross-section of the drain according to the invention, in a first embodiment, with the plug in the normal, open position; - -
figure 2 is an axial cross-section of the drain with the plug in the closed position, preventing the passage of water; - -
figure 3 is an axial cross-section of the drain with the plug in the open position, permitting the passage of water when acting as an "overflow"; - -
figures 4-6 are cross-section views, analogous to those above, of a drain in a second embodiment; - -
figures 7-9 are cross-section views, analogous to those above, of a drain in a third embodiment; - -
figures 10 and 11 are cross-section views of a drain in a further embodiment variation, respectively with the plug in the position preventing the passage of water and with the plug permitting the passage of water when acting as an "overflow"; and - -
figure 12 shows a tool for unscrewing the flange of the drain from the drain body. - In said drawings,
reference numeral 1 globally denotes a drain according to the invention in its entirety. In the continuation of the description, the parts common to the various embodiments of the drain will be identified by the same reference numerals. - According to a general embodiment, the drain comprises a substantially
cylindrical drain body 10 suitable for being housed in a hole made in a bath, washbasin, sink or the like. Thebody 10 terminates underneath with abottom grid 12 and above with anannular flange 14 which defines theintake 16 for the passage of water to thedrain body 10. - A
plug 18 is lodged in thedrain body 10 to open/close theintake 16 and thereby allow/prevent the passage of water to the drain pipe. Theplug 18 comprises aplug body 20 and ahead 22 bearing asealing element 24 suitable for cooperating with the inner rim 14' of theannular flange 14 to hermetically seal theintake 16 when thehead 22 of the plug is level with said flange. - Innovatively, the
head 22 is axially movable in relation to theplug body 20 between a lowered position, wherein saidhead 22 is below theflange 14 to open the intake, and a raised position, wherein saidhead 22 is level with theflange 14 to hermetically seal theintake 16. - In other words, the
plug 18 never protrudes above theannular flange 14, and therefore above the floor of the bath, sink or the like. - According to a preferred embodiment, the
plug 18 is of the type with a trip movement, wherein thehead 22 passes automatically, for example when thrust by an elastic element, from the lowered position to the raised position following pressure exerted manually upon it. Such type of plug is however known and does not require further detailed explanation herein. - According to a preferred embodiment, when the
head 22 of the plug is in the raised position, the sealingelement 24 lies axially against itsrespective seat 26 made in the flange. For example, thesealing element 24 is an o-ring fitted on a respectiveannular seat 24' made in the side wall of thehead 22. In one embodiment, theseat 26 made in theflange 14 is a concave shape facing downwards so as to define an axial abutment shoulder for the sealingelement 24. Advantageously, when thehead 22 of the plug is level with theannular flange 14, the upper surface of the head is aligned with that of the flange, so as to create a continuous and even surface. - According to a further aspect of the invention, the
plug 18 is supported by the drain body by means of elastic overflow means. Such elastic means are calibrated so as to yield axially above a predefined level of pressure acting on thehead 22 of the plug, so as to cause a lowering of the plug in relation to thedrain body 10. Consequently, starting from a position of normal closure of thedrain intake 16, theentire plug 18 translates axially downwards opening saidintake 16 and thereby allowing the water to empty into the drainpipe. - The pressure acting on the
head 22 contrasting the force opposed by the elastic elements is the hydrostatic pressure of water contained in the bath, sink or the like. The drain according to the invention therefore also acts as an overflow device. - In a first embodiment shown in
figures 1-3 , said yielding overflow device comprises anelastic element 30 by means of which theplug 18 rests on thebottom grid 12 of thedrain body 10. - Consequently, once a maximum level of water has been established and the corresponding pressure value acting on the
head 22 of the plug has been calculated, the contrasting force of theelastic element 30 is chosen so as to enable compression of the elastic element, and thereby lowering of the plug when such pressure value is reached or exceeded. - Advantageously, such overflow device is self regulating, in the sense that when the water level returns equal to or below the maximum threshold level, the
plug 18 automatically returns to its initial position closing theintake 16, thrust upwards by theelastic element 30. In other words, theelastic element 30 also acts as a return mechanism to bring the plug into the raised position closing theintake 16 when the hydrostatic pressure exerted by the water on the plug falls below the pressure exerted by theelastic element 30 on the said plug. - Advantageously, moreover, the contrasting force of the
elastic element 30, in other words its elastic constant, is adjustable, for example by a plumber, so as to choose the maximum level of water admissible. - According to one embodiment, the
elastic element 30 is a spring, for example a helical spring, for example a conical helical spring. - The
elastic element 30 is less rigid than the spring inside the plug. - In one preferred embodiment, the
plug body 20 is connected underneath, for example by screwing, to a housing and guidingbush 32 of theelastic element 30. - More specifically, the
bottom grid 12 of thedrain body 10 comprises a tubularaxial portion 34 which aguide stem 36 extending from the bottom of thebush 32 is inserted in so as to slide. Moreover, such tubularaxial portion 34 defines above anannular support plane 38 of theelastic element 30. - In one embodiment variation shown in
figures 4-11 , the elastic overflow elements comprise magnetic overflow means, operatively connected to theplug 18 and to thedrain body 10 and calibrated so as to yield over a predefined pressure value acting on thehead 22 of the plug as to cause a lowering of theplug 18 in relation to thedrain body 10. In this case too, consequently, starting from a position of normal closure of thedrain intake 16, theentire plug 18 translates axially downwards, opening saidintake 16 and thereby allowing the water to discharge towards the drain pipe. - Preferably, the magnetic overflow means comprise at least a first
magnetic element 50 joined to either theplug 18 or thedrain body 10, and a second magnetic orferromagnetic element 52 joined to the remaining between thedrain body 10 and theplug 18. Saidelements plug 18. - The pressure acting on the
head 22 contrasting the force of attraction between the first 50 and second 52 magnetic elements is the hydrostatic pressure of the water contained in the bath, sink or the like. Consequently, once a maximum level of water has been established and the corresponding pressure value acting on thehead 22 of the plug has been calculated, the force of attraction of the magnetic overflow means is chosen so as to enable the reciprocal distancing of themagnetic elements - In other words, the lowering of the
plug 18 occurs when the pressure value reaches or exceeds the force of reciprocal attraction between themagnetic elements - Preferably, the first
magnetic element 50 is connected to thebottom grid 12, for example positioned in a special seat made inside it, and the second magnetic orferromagnetic element 52 is connected to theplug 18. - Advantageously, such overflow device is self-regulating, in the sense that when the water level returns equal to or below the maximum threshold level defined, the
plug 18 automatically returns to its initial position closing theintake 16, thrust upwards by the return means of theplug 18, for example elastic and/or magnetic. - The return means are therefore able to return the
plug 18 to the position prior to lowering, when the pressure acting on thehead 22 falls below the predefined value. - According to a preferred embodiment shown in
figures 4-6 , theplug 18 is supported on thebottom grid 12 by anelastic element 30. According to such embodiment, the return means comprise anelastic element 30. - Advantageously, moreover, the contrasting force of the
elastic element 30, in other words its elastic constant, is adjustable, for example by a plumber, so as to choose the maximum level of water admissible. - According to one embodiment, the
elastic element 30 is a spring, for example a helical spring, for example a conical helical spring. - The
elastic element 30 is less rigid than the spring inside the plug. - According to a preferred embodiment shown in
figures 7-9 , the return means of theplug 18 comprise a thirdmagnetic element 54, joined to thedrain body 10 and suitable for repelling themagnetic element plug 18. - Consequently, with reference to a lowered or overflow condition of the plug 18 (for example shown in
figure 9 ), the first 50 and the second 52 magnetic elements are reciprocally distanced on account of the hydrostatic pressure of the water present in the bath, which acts on thehead 22 of the plug. In such configuration, themagnetic element 52 joined to the plug is positioned near the thirdmagnetic element 54, of the same polarity as that of themagnetic element 52, which therefore tends to repel themagnetic element 52 towards a raised (or closed) configuration of the plug. - Consequently, when the hydrostatic pressure exerted on the
head 22 falls below the predefined value, the thirdmagnetic element 54 repels themagnetic element 52 joined to theplug 18, so that the latter returns to the position prior to lowering (figure 5 ). - Preferably, the first 50 or second 52 magnetic element and the third
magnetic element 54 are distanced along thegrid wall 56 so as to axially define the stroke of themagnetic element plug 18. - In other words, the
magnetic element 52 joined to theplug 18 is movable between a first configuration (shown infigure 8 ), in which it is in contact with the firstmagnetic element 50, and a second configuration (figure 7 or 9 ), in which themagnetic element 52 is positioned in correspondence with the thirdmagnetic element 54. - According to one advantageous embodiment, the
bottom grid 12 of thedrain body 10 identifies an aperture which the guide stem 36 of theplug 18 is able to slide in. The guide stem 36 has a portion offree extremity 58, opposite the portion facing thehead 22, bearing themagnetic element plug 18. - Preferably, the portion of
free extremity 58 of thestem 36 extends into acompartment 60 defined by thegrid wall 56. - As a result, during functioning of the
drain 1, theguide stem 36 is axially mobile inside thecompartment 60 defined by thewall 56. - Preferably, the
compartment 60 can be closed, for example sealed tight, by means of abottom plate 64 screwable to thegrid wall 56. - In one preferred embodiment, the
plug body 20 is connected underneath, for example by screwing, to a housing and guidingbush 32 of theelastic element 30. - More specifically, the
bottom grid 12 of thedrain body 10 comprises a tubularaxial portion 34 extending downwards from thebush 32 which theguide stem 36 is inserted in so as to slide. Moreover, such tubularaxial portion 34 defines above anannular support plane 38 of theelastic element 30. - In a further embodiment variation shown in
figures 10 and 11 , an elastic return element 30' acting on theplug 18, for example on themagnetic element 52 borne by theguide stem 36 is placed on thebottom plate 64 sealing thecompartment 60, instead of the thirdmagnetic element 54,. For example, said elastic return element 30' is a cylindrical helical spring. - Said elastic return element 30' substantially performs the same function as the
elastic return element 30 described for the embodiments offigures 1-6 . Advantageously, the positioning of said elastic return element 30' inside thecompartment 60, sealed by theremovable bottom plate 64, makes it possible to rapidly and easily vary the recoil strength exerted by said elastic element, by simply removing thebottom plate 64 from thegrid wall 56 and inserting one ormore spacers 70 able to increase the compression of the spring 30' between said spring 30' and thebottom plate 64. - The drain thus conceived of makes it possible to avoid making a lateral hole and connecting said hole to the drain pipe. Thereby, the drawbacks of the overflow devices of the prior art complained of above are brilliantly overcame.
- According to one advantageous embodiment, a
guide element 40 able to slide along the walls of thedrain body 10 is joined to theplug 18. - Moreover, in a preferred embodiment the
annular flange 14 is detachably connected to thedrain body 10, for example by screwing, so as to allow the extraction of theplug 18 and access to thebottom grid 12. -
Figure 12 shows a specially configuredtool 80 for unscrewing theannular flange 14 from thedrain body 10. Saidtool 80 is in the shape of a fork comprising a pair ofelastic arms 82 suitable for being inserted in theintake 16 of the drain when theplug 18 is in the lowered position, so as to engage the inner rim 14' of the annular flange. To such purpose, theelastic arms 82 end in anappendage 84 counter-shaped to said inner rim 14'. The latter has at least onecircumferential shoulder 14", preferably two, diametrically opposite, against which anappendage 84 of anarm 82 abuts. This way, by rotating thetool 80, theannular flange 14 is unscrewed from thedrain body 10. - A person skilled in the art may make adaptations, and replace elements with others functionally equivalent, to the embodiments of the drain according to the invention so as to satisfy contingent requirements, while remaining within the sphere of the following claims. Each of the characteristics described as belonging to a possible embodiment may be realised independently of the other embodiments described.
Claims (21)
- Drain (1) for baths, sinks, washbasins and the like, comprising:- a drain body (10) terminating at the bottom with a bottom grid (12) and at the top with an annular flange (14) which defines the intake (16) for the passage of the water in the drain body (10);- a plug (18), lodged in said drain body (10) and comprising a plug body (20) and a head (22) suitable for cooperating with the flange (14);characterised by the fact that said head (22) is axially movable in relation to said body between a lowered position, wherein said head (22) is below the flange (14) to open the intake (16), and a raised position, wherein said head (22) is level with the flange (14) to close the intake (16).
- Drain (1) according to claim 1, wherein the head (22) of the plug trips from the lowered position to the raised position following pressure exerted on it.
- Drain (1) according to claim 1 or 2, wherein the head (22) bears a sealing element (24) suitable for cooperating with an inner rim (14') of the annular flange (14) to seal said intake (16) hermetically when the head (22) of the plug (18) is level with said flange (14).
- Drain (1) according to any of the previous claims, wherein, when the head (22) of the plug is in the raised position, the sealing element (24) lies axially against a respective seat (26) made in the flange (14).
- Drain according to any of the previous claims, wherein the plug (18) is supported by the drain body by means of the elastic overflow means (30, 50, 52, 30') calibrated so as to yield above a predefined level of pressure acting on the head of the plug so as to cause a lowering of the plug in relation to the drain body.
- Drain according to claim 5, wherein said elastic overflow elements exert on the plug (18) a contrasting force less than that needed to cause the lowering of the head (22) in relation to the plug body (20).
- Drain (1) according to any of the previous claims, comprising, in addition, magnetic overflow means, operatively connected to the plug (18) and calibrated so as to yield when a predefined pressure value acting on the head (22) of the plug is exerted so as to cause a lowering of the plug (18) in relation to the drain body (10).
- Drain (1) according to claim 7, wherein the magnetic overflow means comprise at least a first magnetic element (50) joined to either the plug (18) or the drain body (10), and a second magnetic or ferromagnetic element (52) joined to the other, out of the drain body (10) and plug (18), said elements (50, 52) being suitable for cooperating to enable/prevent the lowering of the plug (18).
- Drain (1) according to any of the claims 5-8, comprising, in addition, return means (30, 54, 30') of the plug (18), for example elastic and/or magnetic, which are suitable for returning said plug (18) to the position prior to lowering, when the pressure acting on the head (22) falls below the predefined value.
- Drain (1) according to claim 9, wherein the plug (18) rests on the bottom grid (12) by means of an elastic element (30), for example a helical spring, and wherein the return means comprise said elastic element (30).
- Drain according to claim 10, wherein the plug body is connected underneath to a housing and guiding bush (32) of the elastic element (30).
- Drain according to claim 11, wherein the bottom grid (12) of the drain body comprises a tubular axial portion (34) which a guide stem (36) extending downwards from said bush (32) is inserted in so as to slide.
- Drain according to claim 12, wherein said tubular axial portion defines above an annular support plane for the elastic element (30).
- Drain (1) according to any of the claims 9-13, wherein the return means of the plug (18) comprise a third magnetic element (54), joined to the drain body (10) and able to repel the magnetic element (50, 52) joined to the plug (18).
- Drain (1) according to any of the claims 8-14, wherein the bottom grid (12) of the drain body (10) identifies an aperture which the guide stem (36) of the plug (18) is able to slide in, a portion of free extremity (58) of said stem (36) bearing the magnetic element (50, 52) joined to the plug (18).
- Drain (1) according to any of the previous claims, wherein the bottom grid (12) of the drain body (10) identifies an aperture which the guide stem (36) of the plug (18) is able to slide in, the portion of free extremity (58) of the stem (36) extending into a compartment (60) defined by a grid wall (56) and sealed underneath by a detachable bottom plate (64).
- Drain (1) according to claim 16, wherein an elastic return element (30') acting on the plug (18) is placed in said compartment
- Drain according to any of the claims 5-17, wherein the contrasting force exerted on the plug by the elastic overflow means is adjustable.
- Drain according to any of the claims 9-18, wherein said return means comprises a helical spring.
- Drain (1) according to any of the previous claims, wherein a guide element (40) able to slide along the walls of the drain body (10) is joined to the plug (18).
- Drain (1) according to any of the previous claims, wherein the flange (14) is detachably connected to the drain body (10) so as to allow extraction of the plug (18).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10164527T PL2281955T3 (en) | 2009-07-03 | 2010-05-31 | Drain with plug and overflow function of the plug |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBS2009A000128A IT1396498B1 (en) | 2009-07-03 | 2009-07-03 | EXHAUST DRAIN FOR BATHTUBS, SINKS, WASHBASINS OR OTHER COLLECTION BASES OF A LIQUID |
ITBS2009A000170A IT1395577B1 (en) | 2009-09-15 | 2009-09-15 | EXHAUST DRAIN FOR BATHTUBS, SINKS, WASHBASINS OR OTHER COLLECTION BASES OF A LIQUID |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2281955A1 true EP2281955A1 (en) | 2011-02-09 |
EP2281955B1 EP2281955B1 (en) | 2015-11-04 |
Family
ID=42830079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10164527.3A Active EP2281955B1 (en) | 2009-07-03 | 2010-05-31 | Drain with plug and overflow function of the plug |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2281955B1 (en) |
ES (1) | ES2561489T3 (en) |
PL (1) | PL2281955T3 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016006989A1 (en) * | 2013-07-05 | 2016-01-14 | Mario Marquez Miranda | Automatic drain valve |
US20180127961A1 (en) * | 2016-11-10 | 2018-05-10 | Max Homami | Simplified drain plug with overflow release |
CN108978134A (en) * | 2017-06-02 | 2018-12-11 | 青岛海尔洗衣机有限公司 | Drainage device of wholly automatic washer and washing machine |
CN110607665A (en) * | 2018-06-15 | 2019-12-24 | 青岛海尔滚筒洗衣机有限公司 | Washing machine's overflow device and washing machine |
IT201800020344A1 (en) | 2018-12-20 | 2020-06-20 | Ravani S R L | Sanitary drain |
IT201800020326A1 (en) | 2018-12-20 | 2020-06-20 | Ravani S R L | Sanitary drain |
IT201900004597A1 (en) | 2019-03-27 | 2020-09-27 | Ravani S R L | Aerator of a drain for sanitary ware, and together comprising a drain and an aerator |
US20230228073A1 (en) * | 2022-01-14 | 2023-07-20 | B/E Aerospace, Inc. | Automatic drain system |
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WO1991016847A1 (en) * | 1990-05-04 | 1991-11-14 | Jattke, Udo | Hydrostatic drain plug |
GB2416822A (en) * | 2004-08-06 | 2006-02-08 | Boc Group Plc | Inlet valve for vacuum pump |
WO2008011240A2 (en) * | 2006-07-20 | 2008-01-24 | Fleetguard, Inc. | Magnetic check valve |
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2010
- 2010-05-31 PL PL10164527T patent/PL2281955T3/en unknown
- 2010-05-31 EP EP10164527.3A patent/EP2281955B1/en active Active
- 2010-05-31 ES ES10164527.3T patent/ES2561489T3/en active Active
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WO1991016847A1 (en) * | 1990-05-04 | 1991-11-14 | Jattke, Udo | Hydrostatic drain plug |
GB2416822A (en) * | 2004-08-06 | 2006-02-08 | Boc Group Plc | Inlet valve for vacuum pump |
WO2008011240A2 (en) * | 2006-07-20 | 2008-01-24 | Fleetguard, Inc. | Magnetic check valve |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016006989A1 (en) * | 2013-07-05 | 2016-01-14 | Mario Marquez Miranda | Automatic drain valve |
US20180127961A1 (en) * | 2016-11-10 | 2018-05-10 | Max Homami | Simplified drain plug with overflow release |
US10865552B2 (en) | 2016-11-10 | 2020-12-15 | Westbrass Company | Simplified drain plug with overflow release |
CN108978134A (en) * | 2017-06-02 | 2018-12-11 | 青岛海尔洗衣机有限公司 | Drainage device of wholly automatic washer and washing machine |
CN110607665A (en) * | 2018-06-15 | 2019-12-24 | 青岛海尔滚筒洗衣机有限公司 | Washing machine's overflow device and washing machine |
WO2020128669A1 (en) * | 2018-12-20 | 2020-06-25 | Ravani Sifoni S.R.L. | Drain for sanitary fixtures |
IT201800020326A1 (en) | 2018-12-20 | 2020-06-20 | Ravani S R L | Sanitary drain |
WO2020128656A1 (en) * | 2018-12-20 | 2020-06-25 | Ravani Sifoni S.R.L. | Drain for sanitary fixtures |
IT201800020344A1 (en) | 2018-12-20 | 2020-06-20 | Ravani S R L | Sanitary drain |
US11959263B2 (en) | 2018-12-20 | 2024-04-16 | Ravani S.R.L. | Drain for sanitary fixtures |
IT201900004597A1 (en) | 2019-03-27 | 2020-09-27 | Ravani S R L | Aerator of a drain for sanitary ware, and together comprising a drain and an aerator |
WO2020194074A1 (en) * | 2019-03-27 | 2020-10-01 | Ravani S.R.L. | Assembly of a drain with an aerator to increase the reliability of an overflow mechanism |
US20230228073A1 (en) * | 2022-01-14 | 2023-07-20 | B/E Aerospace, Inc. | Automatic drain system |
US11905693B2 (en) * | 2022-01-14 | 2024-02-20 | B/E Aerospace, Inc. | Automatic drain system |
Also Published As
Publication number | Publication date |
---|---|
EP2281955B1 (en) | 2015-11-04 |
PL2281955T3 (en) | 2016-05-31 |
ES2561489T3 (en) | 2016-02-26 |
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