Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
A TOILET FLUSHING UNIT
Document Type and Number:
WIPO Patent Application WO/2019/106458
Kind Code:
A1
Abstract:
The invention discloses a toilet flushing unit (10) for use in a toilet water reservoir (100). A reservoir connector (12) is securable to an outlet of the reservoir (100) with a flush body connector (14) securable over the reservoir connector (12). A flush body sealing shaft (16) having a seal (36) at its lower end is slidably moveable relative to the flush body connector 14). A flush lever connector (18) is secured to the flush body sealing shaft (16) and configured to operatively move the shaft (16) between a closed position, wherein the seal (36) of the shaft (16) seals over the reservoir connector (12), and an open position wherein a passage of water is provided through an opening of the flush body connector (14) to the outlet of the reservoir (100). The invention extends to a flush body connector (14) which is retrofittable to existing toilet flushing units.

Inventors:
SNYMAN, Frederick, Christo (112 Amos Street, Colby, 0083 Pretoria, 0083, ZA)
BRINK, Gert, Johannes (64 22nd Street, Menlo Park, 0081 Pretoria, 0083, ZA)
Application Number:
IB2018/058768
Publication Date:
June 06, 2019
Filing Date:
November 08, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SNYMAN, Frederick, Christo (112 Amos Street, Colby, 0083 Pretoria, 0083, ZA)
BRINK, Gert, Johannes (64 22nd Street, Menlo Park, 0081 Pretoria, 0083, ZA)
International Classes:
E03D1/34; E03D5/092
Attorney, Agent or Firm:
DM KISCH INC. (P O Box 8, Sandto, 2146 Johannesburg, 2146, ZA)
Download PDF:
Claims:
CLAIMS

1 . A toilet flushing unit for use in a toilet water reservoir comprising:

- a reservoir connector securable to an outlet of the toilet water reservoir;

- a flush body connector securable over the reservoir connector;

- a flush body sealing shaft having a seal at its lower end and which is slidably moveable relative to the flush body connector between a closed position, wherein the seal of the shaft seals over the reservoir connector, and an open position wherein a passage of water is provided through an opening of the flush body connector to the outlet of the reservoir.

2. A toilet flushing unit as claimed in claim 1 , wherein a flush lever connector is secured to the flush body sealing shaft and configured to operatively move the shaft between the closed and open positions.

3. A toilet flushing unit as claimed in claim 1 or 2, wherein the shaft is slidably movable at least partly within the flush body connector.

4. A toilet flushing unit as claimed in any one of claims 1 to 3, wherein the opening of the flush body connector is provided at a bottom end of the flush body connector. A toilet flushing unit as claimed in any one of claims 1 to 4, wherein a plurality of equally spaced openings is provided on the flush body connector. 6. A toilet flushing unit as claimed in claim 5, wherein three to six openings are provided on the flush body connector.

7. A toilet flushing unit as claimed in any one of claims 1 to 6, wherein the flush body connector includes a plurality of connection apertures to receive connectors of the reservoir connector.

8 A toilet flushing unit as claimed in claim 7, wherein the flush body connector includes three connection apertures. 9. A toilet flushing unit as claimed in claim 7 or 8, wherein the connectors of the reservoir connector is clip-fitted into or interlocked with the connection apertures of the flush body connector.

A flush body connector securable over a reservoir connector of a toilet water reservoir, the connector configured to accommodate a flush body sealing shaft which has a seal at its lower end and which shaft is slidably moveable relative to the flush body connector between a closed position, wherein the seal of the shaft operatively seals over the reservoir connector, and an open position wherein a passage of water is operatively provided through an opening of the flush body connector to the outlet of the reservoir.

1 1. A flush body connector as claimed in claim 10, wherein the shaft is slidably movable at least partly within the flush body connector.

12. A flush body connector as claimed in claim 10 or 11 , wherein the opening of the flush body connector is provided at a bottom end of the flush body connector.

13. A flush body connector as claimed in any one of claims 10 to 12, wherein a plurality of equally spaced openings is provided on the flush body connector. 14. A flush body connector as claimed in claim 13, wherein three to six openings are provided on the flush body connector.

15. A flush body connector as claimed in claim any one of claims 10 to 14, which includes a plurality of connection apertures to receive connectors of the reservoir connector.

16. A flush body connector as claimed in claim 15, including three connection apertures.

17. A flush body connector as claimed in claim 15 or 16, wherein the connectors of the reservoir connector is clip-fitted into or interlocked with the connection apertures of the flush body connector. 18. A toilet flushing unit as claimed in claim 1 , substantially as herein described and exemplified and/or described with reference to the accompanying figures.

19. A flush body connector as claimed in claim 10, substantially as herein described and exemplified and/or described with reference to the accompanying figures.

Description:
A TOILET FLUSHING UNIT

FIELD OF THE INVENTION This invention relates to a toilet flushing unit and component thereof, more particularly to a toilet flushing unit and system having a novel flush body connector.

BACKGROUND OF THE INVENTION

Water is an essential component of life. With current climate changes around the world, together with a growing population, water resources are under increased threat. Accordingly, means of saving water for use in agriculture, manufacturing of various products and human consumption is vital.

A toilet is a sanitation device used for the storing and disposal of human urine and faeces. In most instances, a toilet comes with a flushing unit which acts as an odour seal and which is used for facilitating the disposal of urine and faeces (effluent) into the sewage system. These toilets are commonly referred to as flush toilets and usually comprise an upstream water supply to a water reservoir which is connected to; a toilet bowl which provides a pedestal for a user and in which the effluent is collected; and a drain pipe which removes the effluent and flushed water from the toilet bowl to a septic tank or into a downstream sewage system. A typical toilet flushing unit comprises of a number of components including a threaded three-point connector, flush body connector, vacuum cup, flush body sealing shaft and flush lever connector arm. The three-point connector is secured to an outlet of the water reservoir and connects to the flush body connector. The flush body connector consists of two portions namely, a large cylindrical shaped housing and a small cylindrical shaft. The larger downward facing cylindrical shaped housing of the flush body connector houses a vacuum cup such that, when the toilet is flushed, the vacuum cup is pulled up in the housing by the flush body sealing shaft, until it reaches its limit.

As the vacuum cup is pulled up into the larger housing of the flush body connector, water that is situated between the top of the cylindrical shapes housing and the flush body sealing shaft is displaced to the toilet bowl. This creates a vacuum that keeps the flush body sealing shaft suspended, allowing water to travel through the reservoir outlet to the toilet bowl. The vacuum is only released after the water level surrounding the flush body connector drops below the flush body connector and vacuum cup, allowing air to break the vacuum, which will allow the flush body sealing shaft to drop back into place to seal the outlet to the toilet bowl.

Typically, a toilet water reservoir is configured to hold around nine (9) to twelve (12) litres of water. Each time the flushing unit is actuated as per above, almost, if not all water in the reservoir is dispensed to the bowl and into the sewage system along with the effluent.

As such, an unnecessary high volume of water is used each time the toilet is flushed resulting in a waste of valuable water. As the water and effluent contains hazardous material, the flushed water is in most instances not suitable for use as grey water, and definitely not useful for human consumption unless filtered with expensive apparatuses. Accordingly, the already limited water supply is threatened by these systems. This disadvantage is further exacerbated in that most toilet systems utilize the toilet flushing system described above. To limit the use of water these systems, a user may try to halt the outflow of water from the reservoir by moving the lever upwardly to its original position. This movement is however provided against flow of water out of the reservoir and places an undue force on the components of the toilet, leading to unnecessary wear and tear thereby negatively impacting on the useful life thereof.

Although limited alternative toilet units and systems have been proposed to save water, they do not provide adequate sanitation and it is in most instances prohibitively expensive to substitute the existing toilet flushing systems with alternative, water friendly solutions. OBJECT OF THE INVENTION

It is accordingly the object of this invention to provide a toilet flushing unit and component thereof which at least partially overcomes and/or alleviates the abovementioned disadvantages associated with the prior art units and systems and/or to provide an improved toilet flushing unit and component thereof to save water.

SUMMARY OF THE INVENTION

According to a first aspect of this invention there is provided a toilet flushing unit for use in a toilet water reservoir comprising:

- a reservoir connector securable to an outlet of the reservoir;

- a flush body connector securable over the reservoir connector;

- a flush body sealing shaft having a seal at its lower end and which is slidably moveable relative to the flush body connector between a closed position, wherein the seal of the shaft seals over the reservoir connector, and an open position wherein a passage of water is provided through an opening of the flush body connector to the outlet of the reservoir.

The invention further provides for a flush lever connector to be secured to the flush body sealing shaft and configured to operatively move the shaft between the closed and open positions. The invention further provides for the shaft to be slidably movable at least partly within the flush body connector.

The invention further provides for the opening of the flush body connector to be provided at a bottom end of the flush body connector.

The invention further provides for a plurality of equally spaced openings to be provided on the flush body connector. Preferably, three to six openings will be provided on the flush body connector.

The invention further provides for the flush body connector to have a plurality of, preferably three connection apertures to receive connectors of the reservoir connector. The connectors of the reservoir connector will preferably be clip-fitted into or interlocked with the connection apertures of the flush body connector.

In accordance with a second aspect of the invention there is provided a flush body connector securable over a reservoir connector of a toilet water reservoir, the connector configured to accommodate or house a flush body sealing shaft which has a seal at its lower end and which shaft is slidably moveable relative to, or at least partly within the flush body connector between a closed position, wherein the seal of the shaft operatively seals over the reservoir connector, and an open position wherein a passage of water is operatively provided through an opening of the flush body connector to the outlet of the reservoir.

The invention further provides for the shaft to be slidably movable at least partly within the flush body connector.

The invention further provides for the opening of the flush body connector to be provided at a bottom end of the flush body connector. The invention further provides for a plurality of equally spaced openings to be provided on the flush body connector. Preferably, three to six openings will be provided on the flush body connector.

The invention further provides for the flush body connector to have a plurality of, preferably three connection apertures to receive connectors of the reservoir connector. The connectors of the reservoir connector will preferably be clip-fitted into or interlocked with the connection apertures of the flush body connector.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features of this invention will become apparent from the following description set forth below of a non-limiting example with reference to the accompanying drawings in which: Figure 1 is a top perspective view of a toilet flushing unit of the prior art; Figure 2 is a top perspective view of a toilet flushing unit according to the invention;

Figure 3 is a top perspective view of a reservoir connector forming part of the unit according to the invention;

Figure 4 is a top perspective view of a flush body sealing shaft forming part of the unit according to the invention;

Figure 5 is a top perspective view of a flush lever connector forming part of the unit according to the invention;

Figure 6 is a top perspective view of a first embodiment of a flush body connector forming part of the unit according to the invention and which forms a component in accordance with another aspect of the invention;

Figure 7 is a top perspective view of a second embodiment of a flush body connector forming part of the unit according to the invention and which forms a component in accordance with another aspect of the invention; and

Figures 8 & 9 are top perspective views of a toilet flushing unit in a closed and flushing position respectively as installed into a toilet reservoir. DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION

As shown in figures 2 - 9, a toilet flushing unit 10 for use in a toilet water reservoir is generally indicated by reference numeral 10.

The toilet flushing unit 10 comprises of a reservoir connector 12, a flush body connector 14, a flush body sealing shaft 16 and a flush lever connector 18.

The reservoir connector 12 is securable over an outlet of the reservoir 100 (shown in figures 8 & 9) by a screw-thread 20 which is complimentary to an internal screw-thread (not shown) on the base of the toilet reservoir 100 where an outlet of the toilet bowl is provided (not shown). The reservoir connector 12 is hollow to allow passage of water to the reservoir outlet. To ensure a sealed fit with the reservoir outlet, the reservoir connector 12 has suitable rubber seals/washers 22 as shown. The reservoir connector 12 also has a frame 24 with three connectors 26 which can be clip-fitted or interlocked in complimentary shaped apertures 28 of the flush body connector 14. The reservoir connector 12 serves the function of providing the fitment to the reservoir outlet, but also holds the flush body connector 14 in place over the reservoir outlet.

The flush body connector 14 has a hollow cylindrical portion 30 which houses the flush body sealing shaft 16 and allows movement of the shaft 16 within the flush body connector 14 in upward and downward directions during the flushing operation as will be described in more detail below. The flush body connector 14 furthermore has openings 32 equally spaced at its bottom end. The number of openings may vary and does not necessarily have to be equally spaced. For example, in figure 6, the flush body connector 14 has three openings 32, whereas the embodiment of figure 7 has six openings 32. The embodiment of figure 7 is preferred as the manufacturing process is simple and utilises a minimum amount of plastics material from which it is manufactured. Fins 33 provide reinforcement of the connector 14 as well as directing water flow to the openings 32.

The shaft 16 furthermore has a seat 34 with a rubber seal/washer 36 which operatively provides a seal or closure to the reservoir outlet when the toilet flushing unit is in a closed or resting position as shown in figure 8. This allows the water reservoir to be filled by a water delivery system 200 in the usual manner. The flush body connector 14 is further configured to connect, through the shaft 16, to the flush lever connector, in this embodiment a flush lever connector arm 18 that is operable by a user by actuating a lever 38 in the known manner to actuate flushing of the unit 10. It will also be understood that the shaft 16 and arm 18 can be a single component.

The operation of the unit 10 will now be described in more detail.

With the apparatus 10 in its resting or closed position shown in figure 8, the seal 36 of the shaft 16 provides a seal or closure to the reservoir outlet such that the reservoir is allowed to fill with water. The shaft 16 is also provided with a hollow center 40 to allow an overflow of water in the reservoir therethrough when the water delivery system 200 fails, thereby acting as a measure to avoid overflow of the reservoir 100. The shaft 16 is also telescopic and can be provided in various lengths to accommodate various reservoir- heights accordingly.

When a toilet lever (not shown) on the operative outside of the reservoir 100 is pressed downwardly by a user, the flush lever connector arm 18 causes the shaft 16 to move in an upward direction. This upward direction allows the seal/closure formed between the seal 36 of the shaft 16 and the reservoir connector 12 to break thereby providing a passage for water through the openings 32 of the flush body connector 14 to the reservoir outlet, thereby allowing water to flow/flush to the toilet bowl to flush the toilet. This is shown in figure 9 with the shaft 16 in its open position.

The configuration of the openings 32 of the flush body connector 14 is furthermore provided to optimise downward flow of water directly into the reservoir outlet taking water to the toilet bowl at an increased rate, making flushing more effective with less water volume required. With water travelling in a downward direction, the water forces the seat 34 and seal 36 of the shaft 16 from the open position to the closed position as soon the downward pressure on the outside lever is interrupted. This means that the flushing of water is stopped immediately when the user releases the toilet lever, to allow the user to make a conscious decision on how much water is required in the flushing of the toilet. This effectively saves water during the flushing of the toilet by allowing only the necessary volume of water to flush to the toilet bowl. This simple mechanism requires no force by the user and the flushing lever is simply released to stop flushing of the toilet.

The invention further provides retro-fitting of the unit 10 to existing toilet flushing units in an easy and effective manner in that the flush body connector 14 replaces the flush body connector A and vacuum cup B of the known toilet flushing units as shown in figure 1 and described in the background of the invention. Accordingly, the invention extends to the provision of the flush body connector 14 as a replacement part to existing toilet flushing units without having to change any of the other components. It is accordingly asserted that the abovementioned disadvantages of the prior art toilet flushing units are overcome or at least minimized.

It will also be understood that the invention may be varied without departing from the scope of the invention. For example, the shaft 16 and arm 18 can be a single component or any other flush lever connector or component can be provided to actuate movement of the shaft between the two mentioned positions. The configuration of the openings 32 can also be varied. Securing the various components to or over each other can also be done in various ways. The description above is presented in the cause of providing what is believed to be the most useful and readily understandable description of the principles and conceptual aspects of the invention. In this regard, no attempt is made to show structural details of the invention in more detail than is necessary for a fundamental understanding of the invention. The words used here should be interpreted as words of description rather than words of limitation.