TOILET SEAT SYSTEM
This invention is related to a toilet-seat-system or a similar system which makes use of the lid to serve the user as a backrest.
This application claims priority to German application, DE 10 2007 028678.5, filed on Jun. 21, 2007, herein incorporated by reference.
FIELD OF THE INVENTIONThe present invention relates to a toilet accessory. More specifically, this invention is related to a toilet-seat-system or a similar system which makes use of the lid to serve the user as a backrest.
BACKGROUND OF THE INVENTIONIn the present application, the term “toilet-seat-system” means an assembly that mainly consists of a toilet-seat with a circular recess, a lid, a holder and means for fixation on a toilet-bowl. Any other object that is not part of the above described system is referred to herein as “toilet surroundings.” The right and the left side of the toilet-seat-system are based on the point of view of the sitting user.
Toilet-seat-systems are used in almost all households and public places. Ergonomic aspects are little considered even though it is well known that sitting ergonomically is not only comfortable, but also constitutional. In particular in the field of care and for handicapped people the quality of the supporting features of a toilet-seat-system is important.
Basic support function of a toilet-seat-system is provided by the seat and the lid if used as a backrest.
Moreover, toilet-seat-systems need to allow easy cleaning, which is realized by few and simple formed components which can easily be assembled and disassembled.
In almost all toilet-seat-systems, the lid and the seat are connected with a hinge facing the wall so that the lid can be rearward tilted freely against a back-stop. Normally the back-stop is a wall or a flushing water supply section so that the lid can theoretically be used as a backrest even though certain disadvantages must be taken into consideration. If the back-stop for the lid is located to far behind the seat, it is eventually not possible to use the lid as a backrest.
According to the general guidelines of ergonomic seating and positioning, the backrest should support the lumbar region actively while under the lumbar region room for the buttocks of the user should be provided. Moreover, the slope of the backrest should be around 10° with reference to the vertical.
If a conventional toilet-lid is used as a backrest, a correct ergonomic sitting posture of the user is not assured. On the one hand the distance between the user's back and the user's lumbar region and the lid normally is too large. On the other hand the slope of the lid depends on the toilet-surroundings and hence is not defined. Some conventional toilet-lids cannot be used as a back-rest at all because the stability of the components is too low. At last, a plane and non-ergonomic lid which is used as a backrest can eventually cause pressure points or injuries of the spine.
JP 2004 057 638, U.S. Pat. No. 5,809,582 and JP 6225843 disclose toilet-lids that can be used as a back-rest. For this purpose, support and cushion parts are fixed on the lid to support the back of the user and to allow comfortable sitting. In JP 2004 057 638 the lid is supported against the toilet-surroundings by a distance piece, which means an additional and also adjustable component to achieve a defined slope of the backrest is required. In U.S. Pat. No. 5,809,582 and JP 6225843 the support of the backrest is not described.
JP 2004 350 785 discloses a toilet-seat-system that provides a pivotable backrest that is connected to the toilet-bowl by a leverage. The main disadvantages are that the backrest cannot easily be used as a lid and the system is comparably complex.
JP 2002 330 899 discloses a mechanical structure to be mounted on a toilet-bowl that allows the pivotable backrest to be tilted on the toilet-seat. Unfavorable are the complexity of the tilting mechanism and the necessity of a solid sidewise fixation on a special shaped toilet-bowl.
U.S. Pat. No. 4,062,069 discloses a toilet-pan for use in a bed, which provides a removable cushioned backrest being connected to the pan by means of a leverage of bars, straps, springs and hinges. Besides the complexity of the support mechanism, another disadvantage is that the backrest can-not be used as a lid for the pan.
The sanitary industry offers backrests to be mounted above the toilet on the bathroom wall. A main disadvantage is that the backrest cannot be used as a lid for the toilet.
CH 552 376 discloses a toilet-seat with a toilet-lid. The lid provides a backrest for the user with the side facing the user's back showing a concave shape.
U.S. Pat. No. 5,666,672 A2 also discloses a toilet-seat-system comprising a toilet-bowl, a toilet-seat and a toilet-lid with the toilet-lid providing a backrest for the user.
Accordingly, there remains a need for a simple toilet-seat-structure providing a lid that serves the user as a stable backrest and which supports a correct and ergonomic sitting posture of the user whereas the loaded backrest is not supported by the toilet-surroundings. Furthermore, the lid and the toilet-seat should be tiltable to provide cleaning, assembly and disassembly of the system.
The present invention meets this need.
SUMMARY OF THE INVENTIONThe present invention provides a toilet-seat system comprising (a) a toilet-bowl having a forward end and a rear end; (b) a toilet-seat; and (c)a toilet-lid having a forward facing side and a rear facing side; wherein the toilet-seat and the toilet-lid are separately pivotable around an axis of rotation between a closed position and an opened position; and wherein the axis of rotation is running in a distance with reference to the upper plane of the toilet bowl and wherein the toilet-lid juts out towards a front portion of the toilet seat above the axis of rotation to provide a lumbar support; and wherein the toilet-lid comprises an extension which is located below the axis of rotation in the opened position of the toilet-lid, the extension having a forward facing abutment surface configured to abut at least one of the toilet bowl and the toilet seat in response to a rearward force applied to lid at a point above the axis of rotation.
In the following the invention is described with the help of figures which exemplify certain embodiments of the invention:
One of the features of the present invention is that the user can use the opened toilet-lid as a stable backrest that is supported only by the toilet-seat so that the support does not depend on the toilet-surroundings. The toilet-seat-system fulfills the requirements on ergonomic seating and positioning while the ergonomic sitting posture is enhanced by the well defined slope of the backrest and the stepped shape which points to the back of the user and supports in particular the lumbar region. Below the lumbar region the toilet-seat-system offers room for the user's buttocks, which also supports the ergonomic sitting posture. Finally, the lengthwise deepening in the backrest provides enough space for the spine which is not only a comfort feature, but also prevents the spine from pressure points and injuries. Especially in the field of health care where long use of the toilet is usual and a stable support structure of the toilet-seat-system is essential for the well-being of the user the described ergonomic features are of particular importance.
A further advantageous feature of the described toilet-seat-system is its easy assembly and disassembly. The toilet-seat-system can be mounted on any commercial toilet-bowl that has two vertical holes in the rear. For assembly the holder must once be fixed to the toilet-bowl, toilet-seat and toilet-lid are manually snap-fitted with each other and finally snap-fitted on the holder. Regarding the direction of the main loads on the toilet-seat-system the snap-fit connections are ideally located and easily producible especially if toilet-seat and toilet-lid are made of plastic, e.g. in the blow-molding technology.
Due to the easy manual disassembly of toilet-seat and toilet-lid and the small number of simple shaped components cleaning of the toilet-seat-system is remarkably facilitated.
A further advantage of the present invention is that toilet-seat and toilet-lid are locked in their upward position so that none of the components may fall down automatically and a potential risk of injury is avoided. Further, the toilet-seat and toilet-lid can be tilted freely in any angular position.
Furthermore, as the toilet-lid shows a lengthwise deepening it provides an aperture that facilitates the process of opening the toilet-lid.
Finally, the described toilet-seat-system offers a variety of upgrading options that are easy to realize and offer the user further comfort and support while using the toilet. By means of additional components the slope of the backrest can be adjusted arbitrarily, it can be spring born or it can be locked completely. The toilet-seat-system can be used as a basis for mounting tiltable armrests, and the height of the toilet-seat can be enlarged or inclined into a favorable direction by underlying it with spacers.
Accordingly, with reference to
(a) a toilet-bowl (1) having a front end (1a) and a back end (1b);
(b) a toilet-seat (4);
(c) a toilet-lid (3) a forward facing side (3f) and a rear facing side (3r);
wherein the toilet-seat (4) and the toilet-lid (3) are separately pivotable around an axis of rotation between a closed position and an opened position; and
wherein the axis of rotation (2) is running in a distance with reference to the upper plane of the toilet bowl (1); and wherein the toilet-lid (3) juts out towards a front portion of the toilet seat above the axis of rotation (2) to provide lumbar support;
and wherein the toilet-lid (3) comprises an extension (7) which is located below the axis of rotation (2) in the opened position of the toilet-lid (3), the extension having a forward facing abutment surface configured to abut at least one of the toilet bowl and the toilet seat in response to a rearward force (F) applied to lid at a point above the axis of rotation (2).
With reference to
With reference to
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With reference to
In certain embodiments, the toilet-lid (3) is made of plastic. In certain embodiments, the toilet-lid (3) is made in one piece.
With reference to
With reference to
With reference to
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With reference to
In certain embodiments, the toilet-seat (4) provides at least one section that allows a snap-fit connection of the at least one extension (7) in the upper end-position of the toilet-lid (3).
In certain embodiments, the toilet-seat (4) is provided with anti-slip elements (15) on the plane facing the toilet-bowl (1) (see
With reference to
In certain embodiments, the toilet-seat (4) is made as one piece.
With reference to
With reference to
In certain embodiments, at least one of the components—the bar (26) or the cone-shaped section (27, 28)—serve the at least one extension (7) as snap-fit element in the upper end-position of the toilet-lid (3).
The axis of rotation (2) of the toilet-seat (4) may be running through the center of the ball-shaped sections (24, 25) of the holder (10). See
In certain embodiments, with reference to
In certain embodiments, the toilet-lid (3) can be completely locked in its upper end position.
With reference to
The toilet-seat-system with the toilet-lid (3) in the opened position for use as a backrest is shown in
In another embodiment of the invention the circular recess (4a) of the toilet-seat (4) is enlarged with a further recess (4b) to facilitate the intimate care.
In its upper end position the toilet-seat (4) is locked by a snap-fit, but is can be manually moved out of the snap-fit status through a low manual force.
To avoid slipping of the toilet-seat (4) on the toilet-bowl (1) special components (15) are positioned on the lower side of the toilet-seat (4) which are preferably molded on the toilet-seat (4) and which are made of anti-slip material.
In another embodiment of the invention the toilet-seat (4) can be formed to have a form-fit with either the inner or the outer contour of the toilet bowl (1) which prevents slipping.
By means of
Toilet-lid (3) and toilet-seat (4) are preferably made of plastic as one piece, e.g. by the blow-molding technology which is particularly suitable for large volume parts and snap-fit connections.
The voluminous rear section (9) of the toilet-seat (4) could be used to house electronic, pneumatic and/or water bearing components to equip the toilet-seat-system with additional functions, e.g. with a bidet device.
As shown in
The holder (10) is favorably made of corrosion-resistant and/or painted metal or it is made of plastic whereas a plastic holder may contain metal elements to fulfill special functions.
In an embodiment of the invention (not shown) the holder (10) provides two threaded bolts extending from the planes (29, 30) instead of the two inside threads (31, 32) and which are substance-to-substance bonded to the cone-shaped sections (27, 28). The threaded bolts are inserted into the holes (16, 17) of the toilet-bowl (1) and screwed from the other side with fixation material, favorably washers and butterfly nuts.
Another embodiment of the holder (10) is also shown in
The recesses (20, 21) of the toilet-seat 4 hold the corresponding bolts (18, 19) of the toilet-lid (3) and also provide the molded shoulders (37, 38) which allow a snap-fit connection. In addition, described arrangement serves as bearing for the toilet-lid (3) and allows easy manual assembly and disassembly.
Moreover, the toilet-seat (4) provides two, mainly cylindrical-shaped recesses (39, 49) which hold the cone-shaped sections (27, 28) of the holder (10). The recesses are formed so that the ball-shaped sections (25, 27) of the holder (10) serve as a bearing cup which allows pivoting the toilet-seat (4). By means of molded shoulders (Pos. 41) for the right section of the toilet-seat (4) the ball-shaped sections (25, 27) are in form-fit connection with the holder (10) which provides a save bearing of the toilet-seat (4) and allows easy assembly and disassembly.
In another embodiment of the above described snap-fit connection on the bar (26) the extension (7) could make a snap-fit connection with the cone-shaped sections (27, 28) of the holder (10) with the participating components to be shaped accordingly.
As further embodiment of the above described snap-fit connection the toilet-lid (3) could make a snap-fit connection with the toilet-seat (4) with the participating components to be shaped accordingly.
Moreover,
As the vertical force (F3) on the toilet-seat (3) caused by the user normally is much higher than the force (F1) on the backrest there is no resulting turning moment on the toilet-seat (4) so that the toilet-seat-system remains in a stable position of rest. By this arrangement the holder (10) basically remains unloaded and hence the toilet-bowl (1) which is of major importance as the toilet-bowl (1) is normally made of relative brittle ceramics which should not be loaded highly.
In the opened position the toilet-lid (60) is supported by a ridge in the rear of the toilet-seat (63) so that the load on the backrest is lead into the toilet-seat (63) through the contact plane (65).
Alternatively the lid may show a ridge in the rear so that the load is supported by the corresponding contact plane in the toilet-seat.
As the axis of rotation (2) is positioned at the end of the toilet-lid the axis of rotation of the toilet-seat (63) and the toilet-lid (60) are not coaxial.
Claims
1. A toilet-seat system comprising
- (a) a toilet-bowl having a forward end and a rear end;
- (b) a toilet-seat; and
- (c) a toilet-lid having a forward facing side and a rear facing side;
- wherein the toilet-seat and the toilet-lid are separately pivotable around an axis of rotation between a closed position and an opened position; and
- wherein the axis of rotation is running in a distance with reference to the upper plane of the toilet bowl and wherein the toilet-lid juts out towards a front portion of the toilet seat above the axis of rotation to provide a lumbar support; and
- wherein the toilet-lid comprises an extension which is located below the axis of rotation in the opened position of the toilet-lid, the extension having a forward facing abutment surface configured to abut at least one of the toilet bowl and the toilet seat in response to a rearward force applied to lid at a point above the axis of rotation.
2. The toilet-seat system of claim 1 wherein the axis of rotation of the toilet-lid is provided by two bolts which are molded on the toilet-lid.
3. The toilet-seat system of claim 1 wherein the extension provides at least one section which allows a snap-fit connection of the toilet-lid in its upper end-position.
4. The toilet-seat system of claim 1 wherein the toilet-lid comprises a pivot connected to a neck portion which in turn is connected to a support portion at the jut, and wherein the support portion defines a plane which is parallel to and offset from the axis of rotation.
5. The toilet-seat system of claim 1, wherein the forward facing side of the toilet-lid comprises a lengthwise groove which runs in the middle of the toilet-lid.
6. The toilet-seat system of claim 1, wherein a rear portion of the toilet-seat comprises a ridge.
7. The toilet-seat system of claim 6, further comprising:
- a holder connecting the toilet bowl to the toilet seat, wherein:
- the ridge of the toilet-seat comprises: a first set of bearings to hold pivots of the toilet-lid; and a second set of bearings to hold ball-shaped sections of the holder.
8. The toilet-seat system of claim 7, wherein the bearings are shaped such that at least one of the toilet-lid and the toilet-seat is snap-fitted into its end position.
9. The toilet-seat system of claim 7, wherein said bearings are shaped such that the toilet-lid and toilet-seat have a common axis of rotation.
10. The toilet-seat system of claim 1, wherein the toilet-seat comprises at least one abutment member against which the abutment surface abuts to thereby support the at least one extension when the toilet-lid is in the upright position.
11. The toilet-seat system of claim 1, wherein a rear portion of the toilet-seat houses electrical and/or water-bearing components.
12. The toilet-seat system of claim 6, further comprising:
- a holder connecting the toilet bowl to the toilet seat, wherein the holder comprises a right and a left cone-shaped section which are connected by a bar.
Type: Application
Filed: Jun 20, 2008
Publication Date: Dec 25, 2008
Inventor: Paola Wendt (Isny)
Application Number: 12/143,292