GB2549265A

GB2549265A - Toilet cleaning apparatus

Info

Publication number: GB2549265A
Application number: GB1605895.0A
Authority: GB
Inventors: Norman Horsman Calan
Original assignee: Loogun Ltd
Current assignee: Loogun Ltd
Priority date: 2016-04-06
Filing date: 2016-04-06
Publication date: 2017-10-18
Also published as: WO2017174976A1

Abstract

A toilet cleaning apparatus 100, for mechanically cleaning a surface of a toilet bowl,comprises a first reservoir 102 for holding a first fluid, a nozzle 106, a locking mechanism (126 Fig 6A), and an actuator (122, Fig 1) for causing the first fluid to be ejected from the first reservoir and through the nozzle. When the locking mechanism is in a locked state, it prevents the first fluid from being ejected through the nozzle. In an unlocked state, the first fluid is allowed to be ejected through the nozzle. Optionally, the apparatus may include a pump to eject the fluid. The locking mechanism may be a mechanical, electromechanical or magneto-mechanical switch. The apparatus may comprise an access controller, such as a biometric sensor to selectively control the locking mechanism. Alternatively the locking mechanism may operatively lock the toilet cleaning apparatus contained within a body to a separate base unit (500, Fig 6).

Description

TOILET CLEANING APPARATUS

Technical Field

The present invention relates to a toilet cleaning apparatus for cleaning the inside of a toilet bowl.

Background

Often, a toilet brush is provided beside a toilet. The brush has stiff bristles that are used to clean the inner surface and rim of the toilet bowl. The brush can be used with a cleaning product as part of general cleaning. It can also be used to remove any matter that remains adhered to the bowl after flushing. While toilet brushes are generally effective at removing such matter, the bristles tend to be difficult to keep clean. As well as being aesthetically unappealing, a dirty toilet brush is unhygienic, especially given how easy it is for young children to access it. Cleaning the bristles is an unpleasant task.

One solution is to use a jet of water to clean the bowl. For example, a handheld device can be plumbed into the water supply. By actuating a trigger, the water is ejected from a nozzle of the device. Unfortunately, such devices can make a large mess if accessed and operated incorrectly by, for example, a young child. They also require professional installation, making them expensive.

Various toilet cleaning, sanitising, deodorising and bleaching products can be used with a brush. Often, such products are supplied in a squeeze bottle. The bottle can be tilted or inverted such that the product can be squirted onto a surface of the toilet bowl through a nozzle. If needed, a brush can then be used to scrub the toilet bowl. It can be important to prevent children from accessing the contents of any such products, especially if they are toxic or otherwise potentially harmful.

It is an object of the invention to overcome or at least ameliorate one or more disadvantages of the prior art.

Summary

According to a first aspect of the present invention, there is provided a toilet cleaning apparatus comprising: a first reservoir for holding a first fluid; a nozzle; and an actuator for causing the first fluid to be ejected from the first reservoir and through the nozzle, for mechanically cleaning a surface of a toilet bowl; and a locking mechanism that: in a locked state, prevents the first fluid from being ejected through the nozzle; and in an unlocked state, allows the first fluid to be ejected through the nozzle.

The toilet cleaning apparatus may further include a pump for causing the first fluid to be ejected, wherein the locking mechanism, in the locked state, prevents the pump from being actuated by the actuator, thereby preventing the ejection of the first fluid. The pump may be configured to directly pump the first fluid from the first reservoir and eject it from the nozzle. Alternatively, the pump may be configured to pump air into the first reservoir to increase internal pressure in the first reservoir, the actuator including a valve for selectively allowing the pressurised first fluid to be ejected from the nozzle.

The locking mechanism may comprise a mechanical, electromechanical or magneto-mechanical switch that renders the actuator inoperable when the locking mechanism is in the locked state.

The toilet cleaning apparatus may comprise an access controller that enables a user to selectively place the locking mechanism into the locked and/or unlocked state. The access controller may comprise a biometric sensor.

The biometric sensor may comprise one or more biometric sensors chosen from the following group: a fingerprint sensor; a voice recognition sensor; ECG recognition sensor; and a retina or iris scanner;

The access controller may comprise one or more input devices chosen from the following group: a push button; a motion sensor; a proximity sensor; a gesture recognition sensor; a keypad; and a mechanical combination lock.

The access controller may be at least partly embodied in a remote control. The remote control may include a transmitter for communicating with a receiver that is operatively connected with the locking mechanism. The transmitter and receiver may communicate wirelessly.

The first reservoir may be detachable to enable it to be filled with the first fluid. The toilet cleaning apparatus may further comprise a body and a base, wherein: the body includes at least the first reservoir, the nozzle and the actuator; and the base is configured to receive the body.

The base may be configured to rest on the floor and/or be mounted on a wall, to act as a stand for the body when the body is received by the base. The locking mechanism may be operative to lock the body to the base. When the body is locked to the base, the actuator may be prevented from being actuated. In this case, the actuator may be prevented from being actuated by being covered by a portion of the base.

The first reservoir may be detachable from the body. In this case, the first reservoir may only be removable from the body when the locking mechanism is in the unlocked state.

The first reservoir may only be refilled by at least partially removing the body from the base when the locking mechanism is in the unlocked state.

The first fluid may be water, a cleansing agent, a sanitising agent, a bleaching agent, a deodorising agent, a perfume, or any combination thereof.

The toilet cleaning apparatus may further include a second reservoir for holding a second fluid for ejection from the nozzle. The second reservoir may be detachable. The second reservoir may be a replaceable cartridge.

The second reservoir may only be accessible and/or detachable when the locking mechanism is in the unlocked state.

The toilet cleaning apparatus may be configured to mix the first and second fluids at or prior to ejection from the nozzle.

The toilet cleaning apparatus may include a selector that enables a user to selectively choose which of the first or second fluids, or both, is to be ejected from the nozzle.

The second fluid may be water, a cleansing agent, a sanitising agent, a bleaching agent, a deodorising agent, a perfume, or any combination thereof.

The locking mechanism may, when in the locked state, act to prevent ejection of the first fluid but not the second fluid.

The first fluid may be an agent to which children should not have access. References to “ejecting” a fluid include expelling, expressing, or otherwise allowing the fluid to exit the nozzle/device, preferably with sufficient velocity that a stream or spray of the fluid is formed.

Brief Description of the Drawings

Further features and advantages of the invention will become apparent from the following description of preferred embodiments of the invention, given by way of example only, which is made with reference to the accompanying drawings in which: Fig. 1 is a front elevation of a first embodiment of a toilet cleaning apparatus according to the invention.

Fig. 2 is a partially cutaway front elevation of the toilet cleaning apparatus of

Fig. 1.

Fig. 3 is a side elevation of the toilet cleaning apparatus of Fig. 1.

Fig. 4 is a partially cutaway side elevation of the toilet cleaning apparatus of Fig 1.

Fig. 5 is front elevation of the toilet cleaning apparatus of Fig. 1, showing a base.

Fig. 6 is a side elevation of the toilet cleaning apparatus of Fig. 1, showing a base.

Fig. 6a is schematic showing the main functional components of the toilet in which like reference signs refer to corresponding features in the Figs 1 to 4 embodiment ofFig. 1.

Fig. 7 is a front elevation of a second embodiment of a toilet cleaning apparatus according to the invention.

Fig. 8 is a front elevation of a third embodiment of a toilet cleaning apparatus according to the invention.

Fig. 9 is a front elevation of a fourth embodiment of a toilet cleaning apparatus according to the invention.

Fig. 10 is a side elevation of the first embodiment of the toilet cleaning apparatus of Fig. 1, showing a nearly empty state of a reservoir of the toilet cleaning apparatus.

Fig. 11 is a side elevation of the toilet cleaning apparatus of Fig. 10, with the reservoir in a partly removed state.

Fig. 12 is a side elevation showing the reservoir of Fig. 10 in the process of being refilled.

Figs 12a and 12b are sections through an adjustable nozzle for use in an embodiment of a toilet cleaning apparatus according to the invention.

Fig. 13 is a front elevation of the fifth embodiment of a toilet cleaning apparatus according to the invention.

Fig. 14 is a partially cutaway side elevation of the toilet cleaning apparatus of

Fig. 13.

Fig. 15 is a side elevation of toilet cleaning apparatus of Fig. 13.

Fig. 16 is a partially cutaway front elevation of the toilet cleaning apparatus of

Fig. 13.

Fig. 17 is a side elevation of the toilet cleaning apparatus of Fig. 13 showing the first reservoir being withdrawn from the body of the toilet cleaning apparatus.

Fig. 17a is a schematic showing functional components of the toilet cleaning apparatus of Fig. 13.

Fig. 18 is a front elevation of a sixth embodiment of a toilet cleaning apparatus according to the invention.

Fig. 19 is a rear elevation of the toilet cleaning apparatus of Fig. 18.

Fig. 20 is a partly cutaway rear elevation of the toilet cleaning apparatus of Fig. 18.

Fig. 21 is a partly cutaway side elevation of the toilet cleaning apparatus of Fig. 18.

Fig. 22 is a side elevation of the toilet cleaning apparatus of Fig. 18, with the first reservoir partially being withdrawn from the body of the toiler cleaning apparatus.

Fig. 23 is a perspective view of a bathroom showing a seventh embodiment of a toilet cleaning apparatus according to the invention.

Fig. 24 is a front elevation of a remote control forming part of the embodiment of Fig. 23.

Fig. 25 is a schematic of the toilet cleaning apparatus of Fig. 23.

Figs 26a to 26c are detailed sections showing a locking mechanism for retaining a first reservoir within the toilet cleaning apparatus of Fig. 23.

Fig. 27 is a perspective view of the toilet cleaning apparatus of Fig. 1 in use.

Detailed Description

Referring to Figs 1 to 6a and 10 to 12, in accordance with the invention there is provided a toilet cleaning apparatus 100. The toilet cleaning apparatus includes a first reservoir 102 for holding a first fluid 104 and has a nozzle 106 near its lower end. As best shown in Figs 2 and 4, a pump arrangement 108 is provided, comprising an electric motor 110, a step-down gearbox 112 connected to be driven by the motor 110, and a peristaltic pump 114. An inlet of the peristaltic pump 114 is connected via a first tube 116 to a lower end of the first reservoir 102, and an outlet of the peristaltic pump is connected via a second tube 118 to the nozzle 106.

Batteries 120 are provided in series with the pump 102 and an actuator in the form of a retractive electrical push-button 122 located on or near a gripping portion 124 of the toilet cleaning apparatus 100. Also in series with the pump 102, batteries 120 and push-button 122 is a locking mechanism comprising an electrical switch 126. The switch 126 may be a relay controlled by an electrical signal as described below.

The locking mechanism may be in either a locked or unlocked state. In the embodiment of Figs. 1 to 6a, the state is controlled by an access controller comprising a keypad 128 and associated control circuitry 129, as shown in Fig. 6a. Some or all of the keypad 128, control circuitry, electrical switch 126 and push-button 122 may be mounted on one or more printed circuit boards (PCBs) in a manner well known to those skilled in the art.

The toilet cleaning apparatus includes a body 132 containing the first reservoir 102 and other components. The body 132 and first reservoir 102 are shaped to form the gripping portion 124.

In use, the electrical switch 126 is initially in a locked state. In the embodiment of Figs. 1 to 12, the locked state means that the electrical switch 126 is electrically open, which prevents the pump from being powered by the battery even if the push-button 122 is pressed by a user. This prevents the first fluid 104 from being ejected from the nozzle 106 by the pump arrangement 108. To unlock the toilet cleaning apparatus, a user inputs a code via the keypad 128. The control circuitry (not shown) determines whether the input code is correct, and if so, closes the electrical switch 126. Now when the user presses the push-button, a closed circuit is established from the battery to the pump. The electric motor 110 is energised, which drives the peristaltic pump 114 via the step-down gearbox 112. The peristaltic pump 114 sucks the first fluid from the reservoir and ejects it from the nozzle 106 under pressure.

The first fluid may be ejected under sufficient pressure to form a jet of the fluid having characteristics suitable to enable mechanical cleaning of the inner surface and/or rim of a toilet bowl. In this context, “mechanical” means capable of physical removal of material due to the kinetic energy of the fluid jet, rather than, for example, chemical removal. It will be understood by the skilled person that this does not preclude the use of chemicals in the first reservoir that may assist in cleaning and removal of material from the toilet bowl and/or rim.

At lower flow rates and/or velocities, the toilet cleaning apparatus may be used for gentle mechanical cleaning of the bowl and rim of the toilet. At higher flow rates and/or velocities, the jet may be sufficiently strong and focused to enable removal of dried or particularly stubborn material left on the bowl surface following flushing of the toilet. In at least one embodiment, the flow rate and/or velocity is strong enough to remove material from under the waterline within the bowl.

The electrical switch 126 may automatically return to the locked state in any suitable fashion. While the locked state may be entered manually, it may be preferable for safety reasons that the locked state be entered automatically.

By way of non-limiting examples, the electrical switch may return to the locked state: • Upon elapsing of a predetermined period since the electrical switch was placed in the unlocked state. The period may be, for example, 30 seconds. • Upon elapsing of a predetermined period since the push-button was released following use of the toilet cleaning apparatus by the user. The period may be, for example, 30 seconds, but may also be shorter given that the period does not commence until the user releases the push-button. The period may also be calculated from first actuation of the electrical switch. • Upon docking in a base, as described below in relation to Figs. 5 and 6.

Alternatively, the electrical switch may not return to locked state automatically. In that case, the locked state may be entered manually. For example, the locking mechanism may be placed in the locked state when the user re-enters the code into the keypad, or presses a predetermined one of the keypad keys that is configured to indicate that the user is finished with the toilet cleaning apparatus. As mentioned above, this may be a less desirable approach, because it relies on the user remembering to lock the toilet cleaning apparatus after use. A visible, audible and/or tactile alarm (not shown) may be included to alert the user to lock the toilet cleaning apparatus. In other embodiments (including those described below), the access controller can be used to place the locking mechanism into the locked state.

Since it is generally desirable for the device to be in the locked state when not being used, it may be possible to place the locking mechanism into the locked state without the need to overcome whatever security is provided by the access controller. For example, a shortcut such as a separate locking button may be provided to place the locking mechanism into the locked state without using the access controller.

Visible, audible and/or tactile feedback may be provided to let the user know that the device has been unlocked and/or locked.

In an alternative embodiment (not shown), rather than acting directly on the fluid, the pump may be configured to pump air into the first reservoir, thereby increasing the internal pressure within the reservoir. In this embodiment, the actuator may include a valve that is electrically or mechanically opened when the push-button is pressed by a user. The locking mechanism may only allow the valve to be moved into the open position when the locking mechanism is in the unlocked state. The pump may pre-pressurise the first reservoir with air prior to the user unlocking the toilet cleaning apparatus for use. Alternatively, the pump may pre-pressurise the first reservoir with air when the locking mechanism is placed in the unlocked state. In this case, a pressure sensor (not shown) may be provided to sense pressure within the first reservoir. The valve may then be prevented from opening until there is sufficient pressure within the first reservoir to properly expel the fluid. If the pressure drops too far in use, the pump may turn on automatically or manually be activated to re-pressurise the first reservoir.

In another embodiment, the toilet cleaning apparatus is capable of ejecting fluid at different flow rates and/or velocities. These may be selectable by the user. For example, a relatively gentle jet may be used to wash the bowl and under the rim where splashing might be undesirable, while a relatively strong jet may be used to clean more stubborn marks and/or to clean under the waterline. The different flow rates and/or velocities may be selectable by way of a switch, dial, or other mechanism or interface not shown. Alternatively, as shown in Figs 12a and 12b, a manually adjustable threaded nozzle 106 may be provided. When the nozzle 106 (see Fig. 12a) is in the unscrewed position, the liquid is sprayed in a relatively narrow powerful jet spray pattern 1200. By screw-tightening the nozzle, the spray pattern 1200 becomes less powerful and more dispersed (see Fig. 12b). The powerful jet may be used for aggressive cleaning, whereas the more dispersed pattern may be used for disinfecting or deodorising, for example. A range of different jet patterns are available depending on how far the nozzle is turned in either direction.

Alternatively or in addition, the nozzle may be detachable for replacement with another nozzle having a different spray pattern. This may be achieved by use of a quick-release fitting (not shown) that allows the nozzle to be connected and disconnected from its tube. Alternatively, the nozzle may have an inner portion (not shown) that is a sealing friction fit with the tube or a sealing port.

In the embodiment of Figs 1 to 12, the nozzle is fixed at a particular angle. While simplifying construction of the device, this may limit the range of angles at which a user may conveniently use the device. As an alternative, a portion 130 of the toilet cleaning apparatus (as indicated in Fig. 3) may rotate to angle the nozzle to a desired position. One or more detents (not shown) may allow positioning of the nozzle at corresponding predetermined positions. In a particular embodiment, a detent may be provided to allow the nozzle to be returned to the orientation shown in the embodiment of Figs 1 to 4.

While the locking mechanism shown in the embodiment of Figs 1 to 4 comprises an electrical switch, it will be appreciated that any other suitable locking mechanism may be used. For example, the locking mechanism may comprise a mechanical, electro-mechanical, electric or magneto-mechanical catch, switch, bolt or other mechanism that prevents ejection of the first fluid from the reservoir. The locking mechanism may be designed to physically prevent the actuator from being operated. For example, where the actuator is a push-button, the locking mechanism may prevent the push-button from being pressed by the user. In another embodiment, the locking mechanism may physically cover the actuator with, for example, a gate or cover that physically prevents access. The locking mechanism may alternatively or additionally prevent operation of the pump, or retain a valve closed to prevent the fluid leaving the reservoir and/or being ejected from the nozzle.

In alternative embodiments, the access controller may comprise a biometric sensor. The biometric sensor may comprise one or more of the following biometric sensors (along with their associated control circuitry): • A fingerprint sensor. • A voice recognition sensor. • An ECG recognition sensor. • A retina or iris scanner.

Operation of these and other biometric sensors is well known to those skilled in the relevant arts, and so these are not described in any further detail.

In other embodiments, the access controller may comprise one or more of the following input devices: • A manually operable controller, such as a button, switch, slider, touch sensor or touch pad, or any combination thereof. • A motion sensor, such as a capacitive, microwave, infrared, or camera based motion sensor, or any combination thereof. • A proximity sensor, such as a capacitive, microwave, infrared, or camera based proximity sensor, or any combination thereof. • A gesture recognition sensor.

Operation of these and other input devices is well known to those skilled in the relevant arts, and so these are not described in any further detail.

The access controller may be operated to input a security sequence (eg: long press, short press, two long presses) and/or may interpret one or more user gestures (eg, hand gestures or gestures drawn onto a touch surface).

Referring to Figs 5 and 6, in which like reference signs refer to corresponding features in the Figs 1 to 4 embodiment, the toilet cleaning apparatus may comprise the body 132 and a base 500. The base 500 is configured to receive the body 132 so that the gripping portion 124 may be grasped by the user to enable the body to be disengaged from the base. The base 500 forms a stand, which allows convenient storage of the body when it is not in use.

In the embodiment of Figs 5 and 6, the base 500 includes a flared lower portion 502 configured to rest on the floor. The flared portion provides stability, making the toilet cleaning apparatus more resistant to being accidentally tipped over.

Alternatively or in addition, the base 500 may be configured for mounting to a wall. In that case, the base may optionally include one or more mounting points (not shown), such as holes or slots enabling the base to be screwed or otherwise fixed to a wall.

The locking mechanism may optionally be operative to lock the body to the base 500. The body may be locked to the base with a mechanism separate to that used to prevent the first fluid from being ejected from the nozzle. Alternatively, a single mechanism may handle both. For example, when the body is locked to the base, the actuator may be prevented from being actuated. This may be by way of a physically preventing operation of the actuator (eg, as described above). Alternatively, the base may include a portion (not shown) that covers the actuator when the body is locked to the base, thereby preventing a user from actuating the actuator. For example, when the actuator is a push-button, the portion may cover the push-button so that it cannot be pressed by a user. In that case, the actuator (eg, the push-button) is only accessible when the locking mechanism is placed in the unlocked state and the body is removed from the base 500.

The skilled person will appreciate that there are other ways in which locking the body 132 to the base 500 directly or indirectly prevents ejection of the first fluid when the locking mechanism is in the locked state.

Figs 7 to 9 show alternative embodiments of the invention.

Fig. 7 shows an embodiment in which the access controller includes a magnetic lock 700. The locking mechanism may be placed into the unlocked state by placing a magnetic key (not shown) into position within or adjacent the magnetic lock 700. The magnetic key may be shaped, and/or a combination of magnets and/or magnetic field shapes and/or direction(s) may be provided, such that the magnetic lock cannot be operated with a standard magnet.

Fig. 8 shows an embodiment in which the access controller includes a near field communication (NFC) lock 800. The locking mechanism may be placed into the unlocked state by placing a NFC token (not shown) into position within or adjacent the NFC lock 800.

In the Fig. 7 and Fig. 8 embodiments, the magnetic key 700 or NFC token 800 may be stored in a holder (not shown). The holder may be concealed in the body or (in embodiments where there is a base) within the base, such that it cannot easily be located by a user who is not familiar with its location. Alternatively or in addition, a holster or holder (not shown) may be provided for mounting to, eg, a wall. The holster or holder is designed to enable a key or token to be retained in a safe place. The holster or holder should be mounted high enough to be out of the easy reach of children.

Fig. 9 shows an embodiment that has a smaller keypad 128 than that of the Figs 1 to 4 embodiment. This makes the device cheaper to manufacture and reduces the number of digits to be remembered in the access code.

In the embodiments of Figs. 1 to 12, the first reservoir 102 is transparent. This allows a user to easily see how much of the first fluid 104 remains in the first reservoir 102. For example, in Fig. 10, the first reservoir 102 is nearly empty.

In some embodiments, the first reservoir 102 may be detached to enable it to be refilled with the first fluid. The first reservoir 102 may include a one-way valve 1100. When the first reservoir 102 is installed within the body, the one-way valve sealingly engages a corresponding port (not shown) located within the body 500. The first tube 116 is attached to the port. When the first reservoir 102 is detached from the body 500, the one-way valve 1100 closes, preventing fluid from leaking out of the first reservoir 102. The first reservoir 102 may then be refilled by using a bottle 1102 with an outlet 1104 that may be pushed through the one-way valve 1100, thereby allowing the first fluid 104 to move from the bottle 1102 into the first reservoir 1104. This may happen due to gravity, or the bottle 1102 may be squeezable to force the fluid into the first reservoir 102. In either case, a breather hole and/or tube (not shown) may be provided to equalise pressure between the bottle 1102 and the first reservoir 102.

In alternative embodiments, the first reservoir 102 may be refilled by removing a lid (not shown) or opening an access hatch (not shown) to enable the first fluid to be poured, squeezed or sprayed into the first reservoir 102.

In an embodiment in which the first reservoir is detachable, the locking mechanism may operate to prevent detachment of the first reservoir from the body when in the locked state. Detachment of the first reservoir from the body may be prevented by a mechanism separate to that used to prevent the first fluid from being ejected from the nozzle (and/or used to prevent separation of the body from the base, in embodiments with both). Alternatively, different mechanisms may be used to lock some or all of the components in place and/or prevent ejection of the first fluid from the nozzle.

The first reservoir 102 may be refilled by at least partially removing the body from the base when the locking mechanism is in the unlocked state. The embodiment of Figs 10 to 12 is an example of such an embodiment. In alternative embodiments (not illustrated), a lid, hatch, valve or other closure may give access to the reservoir to enable refilling.

Figs 13 to 17 show an alternative embodiment of a toilet cleaning apparatus, in which like reference signs refer to corresponding features from earlier figures. In addition to the first reservoir, the toilet cleaning apparatus shown in Figs 13 to 17 comprises a second reservoir 1300 for holding a second fluid 1302. In the embodiment shown, the second reservoir 1300 is around three times the size of the first reservoir 102. The relative difference in sizes relates to the intended fluid type for each reservoir. In the embodiment shown, the second reservoir is intended to hold water, optionally with a small amount of relatively safe detergent or other cleaning compound, or perfume, mixed in. The first reservoir is intended to hold relatively less safe substances, such as bleach, disinfectant and/or aggressive cleaning agents. Of course, the first and second reservoirs may be of the same size, or either may be larger or smaller than the other, depending upon the intended application.

In the embodiment shown, the first fluid 104 and the second fluid 1302 may independently be ejected. In this embodiment, the toilet cleaning apparatus includes a second nozzle 1304 near its lower end. The second nozzle is connected to an outlet of the peristaltic pump 114 via a third tube 1306, and an inlet of the peristaltic pump 114 is connected via a fourth tube 1308 to a lower end of the second reservoir 1300. In this embodiment, the peristaltic pump includes two separate pumping sections (not shown) for selectively pumping the first or second fluids without mixing them within the pump. A clutch, selectable ratchet, or other mechanism known to those skilled in the art can be used to selectively connect the motor to one or the other of the pumping sections.

In the embodiment of Figs 13 to 17, an additional push button 1320 is provided. When pushed, this button causes the second fluid to be pumped from the second reservoir and ejected from the second nozzle. By selecting one of buttons 122 and 1320, the user is able to choose which fluid is ejected from the toilet cleaning apparatus.

It may be desirable to pump the first and second fluids at different rates. For example, the second fluid may be pumped at a relatively high rate, to enable mechanical removal of matter from the bowl and/or rim of the toilet. The first fluid may be pumped at a relatively low rate, to dispense a cleaning, bleaching, or disinfecting agent onto the surface of the bowl and/or rim of the toilet prior to or following use of the second fluid. The different pumping rates may be achieved by using different diameter tubing (not shown) or drive radiuses within the sections of the peristaltic pump that supply the respective first and second nozzles, or by controlling the motor speed dependent on which fluid is being pumped.

In an alternative embodiment, shown schematically in Fig. 17a, the output of the peristaltic pump 114 is connected to only a single nozzle 106. The first and second fluids may be mixed before the nozzle. In the embodiment of Fig. 17a, the mixing takes place before the pump, which simplifies the pump design as it then only needs to pump a single fluid type. The mixing takes place at a two-position valve 1700 which has inputs accepting fluid from the first and second reservoirs. In a first position, the valve 1700 directs the first fluid from the first reservoir to the pump 114. In a second position, the valve 1700 directs the second fluid from the second reservoir to the pump 114. The valve can be, for example, a rotary valve that may selectively be rotated between the first and second positions under the control of a valve position controller 1702. The valve can be, for example, electrically operable, such that the position of the valve is controlled by an electrical signal from the valve position controller. For example, this may be a two way signal that switches the valve back and forth between two stable positions. Alternatively, the valve can be spring biased one direction, and an electrical signal provided for a continuous period where the locking mechanism is in the unlocked mechanism. In that case, the second fluid may be ejected when the device is in the locked state, and the first fluid may only be ejected when the device is in the unlocked state.

The skilled person will appreciate that other valve arrangements can be used. For example, individual valves may be provided inline with either or both of the tubes from the first and/or second reservoirs.

Irrespective of whether one or two reservoirs are provided, in some embodiments the pump may be operable after use to turn in the reverse direction after use. This is done to withdraw any fluid from near the nozzle, which prevents dripping. It may be particularly important that any toxic or otherwise dangerous fluid be withrawn from the nozzle in this manner. The reversing of the pump may take place automatically when the locking mechanism is placed back into the locked state after use, whether that is done manually or automatically.

The mixing may take place after the pump, either before or within the nozzle. In the case that the fluids are mixed, it is the mixed fluids that are prevented from being ejected from the nozzle when the locking mechanism is in the locked state. While the pump reversal described above may still be used in this embodiment, it is preferable that fluids are not mixed between the reservoirs, so any such reversal should prevent or minimise such mixing.

As with earlier embodiments, it may be desirable to have the first and second fluids ejected at relatively different rates.

The first and/or second reservoir may be detachable. In the embodiment shown in Figs. 13 to 17, the first reservoir may be detached without removing the second reservoir. The second reservoir may then be removed separately from the first reservoir. In other embodiments, the first reservoir is detachable, but the second reservoir is not.

In the embodiment shown in Figs. 13 to 17, the first reservoir may include a one-way valve. When the first reservoir 102 is installed within the body, the one-way valve sealingly engages a corresponding port (not shown) located within the body. The first tube is attached to the port. When the first reservoir is detached from the body, the one-way valve closes, preventing fluid from leaking out of the first reservoir. The first reservoir may then be refilled as described above in relation to the other embodiments.

Alternatively, the first reservoir may take the form of a replaceable cartridge. In that embodiment, the cartridge may be removed and discarded or returned to a shop or factory for refilling.

In an embodiment, the first and/or second reservoir is only accessible and/or detachable when the locking mechanism is in the unlocked state.

In an embodiment in which the first reservoir is detachable, the locking mechanism may operate to prevent detachment of the first reservoir from the body when in the locked state. In an embodiment in which there is a second reservoir, detachment of the second reservoir from the body may be prevented by a mechanism separate to that used to prevent the first fluid from being ejected from the nozzle (and/or used to prevent separation of the body from the base, and/or used to prevent detachment of the first reservoir, where applicable). Alternatively, a single mechanism may control detachment of some or all of the detachable/accessible components.

The first reservoir may be refilled by at least partially removing the body from the base when the locking mechanism is in the unlocked state. In alternative embodiments, a lid, hatch, valve or other closure may give access to the first reservoir to enable refilling.

In an embodiment including a second reservoir, the locking mechanism may act only to prevent ejection of one of the fluids, while allowing the ejection of the other fluid even in the locked state. For example, the first reservoir may hold a first fluid in the form of a cleaning, bleaching and/or sanitizing agent that it is desirable to keep out of the reach of children. The second reservoir may hold a second fluid in the form of plain water, or water with a mild detergent and/or perfume added, which is relatively safe for children to come into contact with. The locking mechanism may, in the locked state, prevent ejection of the first fluid, but allow the second fluid to be ejected. In this embodiment, it may be desirable that the second reservoir be larger than the first reservoir.

An example of how the first reservoir is prevented from being removed when the locking mechanism is in the locked state is shown in Figs. 26a to 26c. In this embodiment, the apparatus includes a lock 2600 positioned inside the body 132. The lock 2600 includes a latch 2602 and a body 2604 including a solenoid (not shown). When the locking mechanism is in the unlocked state, the solenoid is actuated to retract the latch 2602 to the position shown in Fig. 26a. In this position, the first reservoir can be removed for replacement, and a new or refilled first reservoir inserted. In this embodiment, when the locking mechanism enters the locked state, the solenoid causes the latch 2602 to move into the position shown in Fig 26b. In this position, the latch passes into a hole 2606 formed in a tab 2608 on the lower end of the first reservoir. If a user attempts to remove the first reservoir in this state, the latch catches on an edge of the hole 2606, preventing withdrawal of the first reservoir (see Fig. 26c). In this case, the latch is shown with a notch 2610 that engages an edge of the hole 2606 if an attempt is made to withdraw the first reservoir, but this is optional.

Other mechanisms for preventing removal of the first reservoir will be apparent to the skilled person. For example, the latch may be spring-loaded into the locked position of Figs. 26b and 26c. In that case, the solenoid need only be energised momentarily to hold the latch 2602 in the unlocked position of Fig. 26a. When the solenoid is de-energised (eg, when the locking mechanism enters the locked state), the latch springs back into the locked position.

Alternatively, the latch may have a ramped portion (not shown) such as is used in door locks. In that case, a refilled or replacement reservoir can be inserted even when the locking mechanism is in the locked state. The tab engages the ramped portion as the first reservoir is inserted, pushing the latch towards the body 2604 until the tab is able to slide past. Once the hole is aligned with the latch, the latch slides through the hole back into the locked position. The first reservoir is then prevented from being removed until the locking mechanism enters the unlocked state.

Although removal of the first reservoir has been described in terms of being under the control of the locking mechanism, the apparatus may be configured such that the first reservoir is locked by a mechanism other than the locking mechanism. For example, a separate locking mechanism can be used. In that case, both locking mechanisms may be controlled (independently or together) by the same access controller, or a different access controller can be provided for each.

Figs. 18 to 21 show an alternative embodiment having first and second reservoirs, in which like reference signs refer to corresponding features described earlier. In this embodiment, the first reservoir is a detachable capsule 1600 intended to hold a first fluid in the form of a cleaning, bleaching and/or sanitizing agent that it is desirable to keep out of the reach of children. The capsule 1600 in this embodiment is elongated and has a one-way valve 2100 that engages with a port 2102 to allow the first fluid to be accessed by the pump. The second reservoir in this embodiment is formed in the body of the toilet cleaning apparatus and is intended to hold a second fluid in the form of plain water, or water with a mild detergent and/or perfume added, which is relatively safe for children to come into contact with. The second reservoir may be refilled by way of a removable cap 1900.

The embodiment shown in Figs 16 to 21 includes a cap 1602 that retains the capsule within the toilet cleaning apparatus. A user may replace or refill the capsule 1600 by removing the cap 1602 and then withdrawing the capsule from the toilet cleaning apparatus as show in Fig. 22. The capsule may be refilled, or a new capsule selected if the capsules are disposable. The full capsule is then slid into place within the toilet cleaning apparatus until it engages with the port.

In this embodiment, the interiors of the reservoirs cannot be seen, because the body is made of opaque materials and completely encloses the reservoirs. Because the fluid level is not visible, a low fluid indicator 1604 is provided. The indicator flashes to let a user know that the fluid levels are low. Alternatively or in addition, the fluid indicator may emit a sound to let a user know that the fluid levels are low. Depending on the embodiment, the indicator may indicate low fluid levels in both, or just one, of the first and second reservoirs.

It will be appreciated that the embodiment of Figs. 16 to 21 may use a transparent material for one or both of the first and second reservoirs. Optionally, part of either or both of the reservoirs may be exposed through the body to allow viewing of fluid levels, and/or a window may be provided in the body to allow such viewing.

In other embodiments, either or both of the first and second reservoirs are made at least partly of opaque materials. In that case, optionally a low fluid level indicator, such as any of those described above, may be provided to let a user know that the fluid levels in one or the other (or both) of the reservoirs is low.

The toilet cleaning apparatus may include a remote control. The access controller may be at least partly embodied in the remote control. For example, the toilet cleaning apparatus in Figs 23 to 25 includes a remote control in the form of a remote unit 2200. The remote unit 2200 includes a transmitter 2202 for communicating with a receiver 2204 that is operatively connected with the locking mechanism. The remote unit 2200 includes the access controller.

The access controller in the remote unit 2200 may take any of several forms, including all those listed above in relation to other embodiments. In addition, if the remote unit is mounted high enough to be out of reach of children, it may be a simple push-button without even the need for a long press or sequence of presses to provide secure unlocking of the locking mechanism.

In the Figs. 23 to 25 embodiment, the access controller is a fingerprint sensor 2206 with associated circuitry. In use, a user who has previously recorded their fingerprint (in a manner well known to those skilled in the art) places their finger onto the keypad, which in conjunction with the associated circuitry confirms that the user is authorised to use the toilet cleaning apparatus. The transmitter sends a wireless signal to the receiver, which in turn changes the locking mechanism to the unlocked state. The toilet cleaning apparatus may then be used to clean the toilet as previously described. The locking mechanism may automatically return to the locked state in any suitable manner, including any of those discussed above in relation to other embodiments.

The wireless link between the transmitter and receiver may take any suitable form. For example, the communication may be in accordance with a Bluetooth®, Bluetooth LE ® (Low Energy) or 802.11 (of any version) standard, or by way of infrared signals. The remote unit may alternatively be physically wired to the base and/or body. In any case, the remote unit may act solely as an input device, with the remainder of the access controller functionality placed in the base and/or body.

The skilled person will appreciate that a remote unit may be used with any of the above-described embodiments with suitable modifications, such modifications being well within the ordinary skill of the skilled person.

Although the pump described above is a peristaltic pump, the skilled person will appreciate that any suitable pump can be used. For example, the pump could be a positive displacement pump such as a rotary or reciprocating pump. The pump can be a gear pump, a screw pump, a piston pump, a plunger pump, or any other suitable pump. Alternatively, the pump can be hand operated, although this has the disadvantage of making the device more difficult for users with weaker hands.

Fig. 27 shows an embodiment of the toilet cleaning apparatus being used to clean around the rim of a toilet bowl 2700.

The above embodiments are to be understood as illustrative examples of the invention. Further embodiments of the invention are envisaged. It is to be understood that any feature described in relation to any one embodiment may be used alone, or in combination with other features described, and may also be used in combination with one or more features of any other of the embodiments, or any combination of any other of the embodiments. Furthermore, equivalents and modifications not described above may also be employed without departing from the scope of the invention, which is defined in the accompanying claims.

Claims

1. Toilet cleaning apparatus comprising: a first reservoir for holding a first fluid; a nozzle; and an actuator for causing the first fluid to be ejected from the first reservoir and through the nozzle, for mechanically cleaning a surface of a toilet bowl; and a locking mechanism that: in a locked state, prevents the first fluid from being ejected through the nozzle; and in an unlocked state, allows the first fluid to be ejected through the nozzle.

2. Toilet cleaning apparatus according to claim 1, further including a pump for causing the first fluid to be ejected, wherein the locking mechanism, in the locked state, prevents the pump from being actuated by the actuator, thereby preventing the ejection of the first fluid.

3. Toilet cleaning apparatus according to claim 2, wherein the pump is configured to directly pump the first fluid from the first reservoir and eject it from the nozzle.

4. Toilet cleaning apparatus according to claim 2, wherein the pump is configured to pump air into the first reservoir to increase internal pressure in the first reservoir, the actuator including a valve for selectively allowing the pressurised first fluid to be ejected from the nozzle.

5. Toilet cleaning apparatus according to any one of claims 2 to 4, wherein the locking mechanism comprises a mechanical, electromechanical or magneto-mechanical switch that renders the actuator inoperable when the locking mechanism is in the locked state.

6. Toilet cleaning apparatus according to any one of the preceding claims, comprising an access controller that enables a user to selectively place the locking mechanism into the locked and/or unlocked state.

7. Toilet cleaning apparatus according to claim 6, wherein the access controller comprises a biometric sensor.

8. Toilet cleaning apparatus according to claim 7, wherein the biometric sensor comprises one or more biometric sensors chosen from the following group: a fingerprint sensor; a voice recognition sensor; ECG recognition sensor; and a retina or iris scanner.

9. Toilet cleaning apparatus according to claim 6, wherein the access controller comprises one or more input devices chosen from the following group: a push button; a motion sensor; a proximity sensor; a gesture recognition sensor; a keypad; and a mechanical combination lock.

10. Toilet cleaning apparatus according to any one of claims 6 to 9, wherein the access controller is at least partly embodied in a remote control.

11. Toilet cleaning apparatus according to claim 10, wherein the remote control includes a transmitter for communicating with a receiver that is operatively connected with the locking mechanism.

12. Toilet cleaning apparatus according to claim 11, wherein the transmitter and receiver communicate wirelessly.

13. Toilet cleaning apparatus according to any one of the preceding claims, wherein the first reservoir is detachable to enable it to be filled with the first fluid.

14. Toilet cleaning apparatus according any one of the preceding claims, further comprising a body and a base, wherein: the body includes at least the first reservoir, the nozzle and the actuator; and the base is configured to receive the body.

15. Toilet cleaning apparatus according to claim 14, wherein the base is configured to rest on the floor and/or be mounted on a wall, to act as a stand for the body when the body is received by the base.

16. Toilet cleaning apparatus according to claim 14 or 15, wherein the locking mechanism is operative to lock the body to the base.

17. Toilet cleaning apparatus according to claim 16, wherein when the body is locked to the base, the actuator is prevented from being actuated.

18. Toilet cleaning apparatus according to claim 17, wherein when the body is locked to the base, the actuator is prevented from being actuated by being covered by a portion of the base.

19. Toilet cleaning apparatus according to any one of claim 14 to 18, wherein the first reservoir is detachable from the body.

20. Toilet cleaning apparatus according to claim 19, wherein the first reservoir is only removable from the body when the locking mechanism is in the unlocked state.

21. Toilet cleaning apparatus according to any one of claims 10 to 20, wherein the first reservoir can only be refilled by at least partially removing the body from the base when the locking mechanism is in the unlocked state.

22. Toilet cleaning apparatus according to any one of the preceding claims, wherein the first fluid is water, a cleansing agent, a sanitising agent, a bleaching agent, a deodorising agent, a perfume, or any combination thereof.

23. Toilet cleaning apparatus according to any one of the preceding claims, further including a second reservoir for holding a second fluid for ejection from the nozzle.

24. Toilet cleaning apparatus according to claim 23, wherein the second reservoir is detachable.

25. Toilet cleaning apparatus according to claim 24, wherein the second reservoir is a replaceable cartridge.

26. Toilet cleaning apparatus according to any one of claims 23 to 25, wherein the second reservoir is only accessible and/or detachable when the locking mechanism is in the unlocked state.

27. Toilet cleaning apparatus according to claim 26, configured to mix the first and second fluids at or prior to ejection from the nozzle.

28. Toilet cleaning apparatus according to any one of claims 20 to 22, including a selector that enables a user to selectively choose which of the first or second fluids, or both, is to be ejected from the nozzle.

29. Toilet cleaning apparatus according to any one of claims 19 to 28, wherein the second fluid is water, a cleansing agent, a sanitising agent, a bleaching agent, a deodorising agent, a perfume, or any combination thereof.

30. Toilet cleaning apparatus according to any one of claims 19 to 28, wherein the locking mechanism, when in the locked state, acts to prevent ejection of the first fluid but not the second fluid.

31. Toilet cleaning apparatus according to claim 30, wherein the first fluid is an agent to which children should not have access.