Patent Application
20250019220
The present innovation relates to the provision of drinking water in public places.
The present application claims priority from Australian patent application 2018903535 the specification of which is herein incorporated by way of short-hand cross-reference.
For decades, fixed pedestal drinking fountains have been provided in parks and other public areas for use by the public. These often comprise sculpted metal pedestals with suitable internal pipe work and exterior water dispensing spouts or nozzles ('bubblers') and/or taps. The pedestals generally incorporate various types of footing structures to permanently secure/fix the water dispensing station to a cast concrete or other base. A mains water supply line is connected/plumbed to the water fountain's internal pipework, and either push-button actuated valves or cocks control water flow from the dispensing spout.
In more recent years, drinking fountains have morphed to enable hassle-free filling of water bottles by including, in addition to a bubbler facility, unobstructed accessible dispending taps on the side(s) of the pedestal. In more sophisticated designs, dedicated recessed fill stands are incorporated into columnar water dispensing units, to allow bottles to be set-down while being refilled.
Furthermore, to deal with public perceptions about water supply safety, taste and smell (especially chloramines), modern water dispensing units (herein also interchangeably termed ‘stations’) often incorporate filtration equipment. Australian Innovation U.S. Pat. No. 20,081,0137 illustrates an example of such unit.
Equally, in order to deal with accidental or malicious water spillage, which can lead to hazardous water pooling at the base of the pedestal, it is known to incorporate water catchment structures at the pedestal footing which are themselves connected to drain pipes and the like. The above mentioned Australian innovation patent also illustrates such a facility.
Portable drinking water dispensing stations are also known, and designs vary greatly. Some are custom-made and incorporated into a trailer that can be towed by a prime mover (truck or car) to a location where it is to be used. Typically, such stations comprise multiple dispensing nozzles/taps and are thus typically bulky and heavy. Some units comprise an internal water storage tank of substantial capacity to supply multiple water dispensing outlets; the tank can be filled from mains water through a suitable coupling.
Other portable water dispensing stations are adapted from traditional drinking pedestals with single or double drinking/bottle filling spouts. The pedestal base of such units is not permanently fixed to the ground but instead modified into a stand platform having a substantial footprint area. The stand platform is devised to keep the pedestal upright and prevent sideways tipping-over under side loads. In some cases, the stand platform is demountable from the upright pedestal unit, to facilitate transport. In other cases, while also being demountable, the metallic stand platform is replaced with a hollow, blow-(or otherwise) moulded, prismatic base that in use is filled with water to provide a heavy counterweight to stabilise the upright dispensing unit when mounted/secured to the base. In any event, this type of portable water dispensing units require some type of transport equipment to move them around to a deployment location.
Patent publication US 2015/0101119 A1 describes a portable water dispensing unit of the above-mentioned type. It comprises a rectangular cross-section light metal frame element providing top, lateral and bottom sides of the unit. The frame is devised to receive and secure front and rear panels that may display advertising or signage, and house plumbing. The stand illustrated in the US document appears to be a simple metallic footing frame. In contrast, what appears to be an Australian product (MeetPat MP-P-02) based on this patent document, uses a water-fillable ballast stand as note above. In both cases, the stand is demountable from the portable water filling unit proper, which is sized and dimensioned to pack into a carry bag after the stand has been removed, for transport and storage purposes. According to technical specifications, the unit has a weight of approx. 20 kg.
The present invention was conceived with an aim of providing a portable water-dispensing station with improved versatility of deployment.
In particular, it would prove advantageous to make available a portable water dispensing station, either being one or both of a bubbler-or fountain-type water dispenser and a water bottle filling station, which can be deployed without the need for time consuming assembly operations at the place of deployment.
It would be particularly useful to provide such portable water-dispensing unit with an on-board transport arrangement that facilitates moving the unit.
Stability of such unit against tipping-over, once deployed on location, without the need for arresting anchors and similar fasteners, would provide an added bonus.
According to the present invention there is provided a portable water dispensing station, including: a housing; internal water supply pipework plumbed to supply water from an externally accessible water inlet coupling at the housing to at least one, but preferably multiple water dispensing outlets arranged at different points about the housing; at least two coaxially spaced apart transport wheels mounted near a bottom face of the housing to protrude from the bottom face such that the station can be wheeled towards/away from a stand surface on which the unit is to be deployed in use; and a base for supporting the housing on the stand surface, the base comprising at least two base flaps permanently hinged about a respective hinge axis to opposite sides of the housing for deployment between a fixable stored position in which the base flaps extend about parallel to the respective housing sides and a fixable fully deployed position in which the base flaps extend substantially perpendicular to the respective housing sides and abut the stand surface.
Advantageously, the station will furthermore comprise internal water drainage pipework plumbed to drain water spilled from the water dispensing outlet(s) into associated drainage inlets towards an externally accessible water drainage coupling of the unit.
In one embodiment, the station's housing has a roughly box-shape appearance, with rectangular cross-section, wherein preferably the width is typically two to four times a depth of the unit, and the height three to five or more times the width, thus defining a rectangular columnar body having a greater propensity to be tipped-over by loads applied on the wider front and rear side faces than loads applied perpendicular to the narrower side faces of the housing. The two foldable base flaps, hinged near or at the bottom of the front and rear sides (faces), can be deployed individually, therefore provide in their deployed state extra stability when the water dispensing station is in use. Further, the permanent, hinged mounting of the flaps to the station's housing dispenses with a need to remove these for transport and storage when not in use. No separate mounting/assembly operation is therefore required.
Advantageously, at least one but preferably both of the base flaps is/are shaped and/or hinged near the bottom of the housing in such manner that when being moved into and reaching the fully deployed position, the wheels are lifted in the process by a predetermined small distance from the stand surface. This increases stability and counters against sliding of the unit with its deployed base legs.
The base flaps preferably have a width similar to the width of the housing (thus increasing inertia moments once deployed to stabilise the unit) and may comprise a rectangular plate secured between or integral with two mounting profiles which in turn are pivotally secured, eg by axles, to respective opposite width-ward sides of the housing. The plates may have a suitably patterned or shaped surface on the face which in deployed state of the base flap abuts the stand surface. This increases frictional engagement between base flaps and stand surface when the former are deployed.
Preferably, the mounting profiles are L-sections having a longer leg portion secured to or integral with the plate and a shorter leg portion extending away from the plate, wherein a mounting (eg hole) for securing the base flaps to a frame member at the respective front and rear housing sides is provided at a location on the shorter leg that enables the base flaps to rotate about the hinge axis and cantilever the housing in an upward direction and lift the wheels from the stand surface during the last phase of movement of the base flaps into the fully deployed position where the base flap plate is co-planar with the stand surface.
Advantageously, the station further includes for each base flap at least one self-engaging arresting mechanism devised to lock and positionally fix the base flaps as each flap is rotated towards and upon reaching its fully deployed position. This dispenses with a need for separate manual handling of locking members, such as locking pins, to secure the deployed position of the base flaps, which in particular also serve to prevent the flaps from being folded back onto the housing when under lever loads.
Such arresting mechanism could be present at both of the width-ward sides of the housing, ie so that the base flaps are arrested at each of their sides, but this is not essential, and will ultimately depend on the load carrying requirements to prevent the housing from toppling.
In a first embodiment, the arresting mechanism comprises a pivotable locking latch member movable with, and preferably articulated to, the base flap, the locking latch member positioned to self-engage with a retainer at the housing when the base flap reaches or is in its fully deployed position.
Advantageously, a biasing arrangement can be provided to positively bias the locking latch member to remain in its deployed, flap-movement arresting position. The biasing arrangement can comprise a torsion spring element acting on the locking latch member, a (variable) pressure gas spring, gas filled cylinder-piston actuator, or the like.
The arresting mechanism of the first embodiment can furthermore advantageously be configured for manual release. In a preferred form, manual release will be effected by actuating the locking latch member itself. Therefore, the locking latch member may comprise a lever portion positioned such that it is easily accessible from a side of the housing so as to be manually moved (pivoted) thereby releasing the engagement between locking latch member and retainer. Where a biasing arrangement as mentioned above is present, the lever will be dimensioned such that lever action is sufficient to impart a release moment sufficient to overcome the biasing force exerted by the biasing arrangement onto the locking latch member, and move the locking latch member out of engagement with the retainer.
Preferably, in the arresting mechanism of the first embodiment, one of the L-sections of each base flap will carry the locking latch member, in this case articulated/pivoted near a terminal end of the shorter leg; the locking latch member will also be called toggle strap herein below, given a preferred embodiment configuration thereof.
The toggle strap can advantageously include a sideways protruding guiding pin which is received within a curved slot at the housing, thereby promoting guidance of the locking latch member during rotation of the base flap between its stored and deployed positions, also thereby ensuring that the locking latch member is correctly orientated and directed to self-engage with its cooperating retainer at the housing. The retainer may be provided by an edge of a through hole in a housing side wall/panel through which the lever portion extends.
In a second embodiment, the arresting mechanism comprises at least one locking cam arranged to rotate with a respective one of the base flaps about the hinge axis, and at least one locking latch member cooperating with the locking cam, the latch member secured to the housing for to and fro or rotational movement such that a terminal end of the latch member, or otherwise suitable follower at the latch member, eg a roller, is disposed to ride a guide surface of the locking cam in crank-like manner during rotation of the hinged base flap between its stored and fully deployed position. The guide surface will have a step or depression into which the terminal end locates in pawl-like manner when the base flap is in its fully deployed position. This arrangement could be loosely defined as a variation of a ratchet and pawl mechanism whereby rotation of the base flap into its fully deployed position causes the terminal end of the latch member to move into the step, whereby rotation in the opposite direction towards the retracted position is inhibited by the step, thereby effectively locking the base flap in its deployed state.
Advantageously, as with the first embodiment of the arresting mechanism, a biasing arrangement can be provided to positively bias the terminal end (or follower) of the locking latch member onto the locking cam's guide surface, thereby ensuring the locking latch member will remain engaged to the cam (but in removable manner) and in particular maintain its engagement when in the (locking) step at the cam. The biasing arrangement can comprise a torsion spring element acting on the locking latch, a (variable) pressure gas spring acting on an end of the latch member opposite its can-engaging end, a gas filled cylinder-piston actuator, or the like.
The guide surface of/at the cam may furthermore be contoured in such manner that it includes a small protrusion (hump) over which the terminal end (or follower) of the latch member will ride immediately before the base flap reaches its stored position when the base flap is rotated from the deployed into the stored position. This hump, together with the biasing arrangement, assists in maintaining the base flap in its stored position, without a separate mechanism to lock this position.
The arresting mechanism of the second embodiment can furthermore also be configured to be manually releasable. In a preferred form, such release mechanism will include a release lever pivoted at the housing and articulated to the locking latch member in such manner that it can selectively move the terminal end (or follower) of the latch member out of engagement with the step at the cam. Where a biasing arrangement as mentioned above is present, the release lever will be dimensioned such that its lever action is sufficient to impart a release moment sufficient to overcome the biasing force exerted by the biasing arrangement onto the locking latch member, and move the locking latch out of engagement with the step.
In a preferred form, the shorter arm portions of one or both of the (L-) mounting profiles of the base plates is shaped to integrally define the locking cam at one or both with-ward ends of the base flaps, and there will accordingly be one or two locking strap members with associated biasing arrangements to secure the deployed state of the base flaps.
Advantageously, one of the base flaps will be articulated (ie hinged) to the housing about a same axis of rotation as that common to the pair of support wheels. Preferably, a common axle will be provided for one of the wheels and one of the L-shaped mounting profiles of the base flap.
The axis of rotation will be located as near as possible to a front or back side lower edge of the housing such that the housing may be tipped over in controlled manner when the base flaps are in their stored position in which these extend substantially parallel to the front and back faces of the housing. In this manner, the unit can be moved like a two-wheeled transport trolley from/to its deployment location. Furthermore, this preferred arrangement enables the unit to be tilted about the lower front (or rear) edge, more precisely about the axis of rotation of the unit's pair of wheels, with only the base flap sharing this axis of rotation having been unlocked and pivoted into its storage/transport position. The other base flap may remain in its fully deployed position. In that way, the still deployed base flap may serve as a temporary surface for transporting boxes and other equipment together with the unit.
In one embodiment, lifting of the unit's pair of transport wheels as consequence of in particular its axis-sharing base flap being rotated into its fully deployed position is achieved in that the distance of a lowermost ground-engaging surface of the base flap plate or L-mounting profiles to the axis of rotation being between a few millimetres to a few centimetres larger than the diameter of the transport wheels (or castors) secured to the housing bottom.
Given that the relevant base flap pivots off the same axis of rotation (or shaft) used by the wheels, it is preferred that the base flap exhibits a somewhat rounded profile at the ground-engaging side closest to the axis of rotation, to facilitate full rotation of the base flap into its fully deployed position after that rear part first engages with the ground during the flap's pivoting movement and subsequently lifts the wheels of the ground.
Advantageously, at least one of the water dispensing outlets is devised as a container filling outlet located above a support surface at the housing adapted to support a drinking container in upright standing position.;
In a preferred embodiment, the unit will have two said bottle (container) filling outlets on opposite front and rear sides of the housing, in recesses within the housing or enclosed within a shroud, so as to hinder direct contact with the container filling outlet. Each such container filling outlet will be associated with a drainage inlet (covered by a grate or suitably tight-meshed strainer) at the container support surface connected to the water drainage pipework.
In another preferred embodiment, the unit will further or additionally comprise a bubbler-or fountain-type water dispensing outlet.
Advantageously, the fountain-type water dispenser will be incorporated/be present at a tray which is articulated to a side of the housing in such manner that it is deployable between an arrestable folded position about flush with the front or rear side of the housing and an arrested but releasable deployed position in which the tray extends about perpendicular from the housing side.
The tray will advantageously be located at a height suitable for access by people in wheel chairs and/or children. The tray will advantageously have a top surface which may be concave towards a drainage channel or drain hole which in turn is in communication with the internal drainage pipework. Incorporation of a folding drinking fountain tray makes the unit more compact and easier to transport and store while not in use.
Preferably, each water dispensing outlet is arranged to be actuated by way of a respective actuator, wherein each actuator is disposed at a location on the unit which is in vicinity of its respective outlet. The skilled person is cognisant of the various ways this can be accomplished, eg push-button shutter valves, twist-handled shutter valves, turn-knob shutter valves, etc.
The skilled person will appreciate that there are multiple ways in which the water supply pipework as well as the drainage pipework of the station may be embodied, with appropriate hydraulic equipment components known in the art, such as mains water pressure reducers, flow-switching and/or shut-off valves, couplings to connect the station to a mains water supply and to a drainage facility, rigid and flexible water pipes, etc.
The skilled person will also appreciate that there are various types of suitable water inlet and outlet couplings that can be employed in the station. These couplings will preferably be provided on opposite width-ward sides of the housing, so that water supply and drainage pipework can be connected to the station, whereby this will allow operators to connect multiple such stations in series where deployment of multiple units is required in the circumstances.
In order to further increase stability of the unit (station) when deployed, a water ballast tank may be received within the housing. Preferably, the ballast tank will be positioned at a lower end of the housing near its bottom, to lower the centre of gravity of the station, once the tank is filled, and increase stability against being tipped-over.
The ballast tank can have a dedicated filling/drainage spout(s) with shut-off valve(s) for filling and draining the tank independently of the unit's internal water supply and drainage pipework.
In one embodiment, the ballast tank may have a valved water inlet plumbed to the internal water supply pipework which receives mains water, so that it can be filled prior to the unit being readied for use via the single water inlet coupling.
In a more preferred embodiment, however, the ballast tank will have a tank water supply line/pipe plumbed to the internal water drainage pipework so that it can be filled using water supplied from the water dispensing outlet(s) via the associated drainage inlet(s).
In both cases, a separate, dedicated tank drainage arrangement could be provided.
However, a more preferred embodiment will be one in which the water ballast tank is fully incorporated hydraulically into the internal water drainage pipework. That is, one can dispense with a separate valved tank filling arrangement, and instead spill water drainage from the unit is always accomplished via directing it first into and then from the ballast tank to waste. To this end, it is necessary to have a tank overflow prevention mechanism, which in its simplest form can be a weir from where spill water above a certain fill-degree of the tank can be removed. In one embodiment, this can be achieved by draining tank water into a tank-internal riser pipe plumbed to the housing's water drainage coupling to which a drainage hose can be connected to drain spillage water to a location remotely from the unit, and thus prevent abovementioned slip hazards at the unit.
The water in the ballast tank will add considerable mass to the unit which will increase stability but restrict the movability of the unit. The need to drain the ballast tank after the unit is no longer in use is paramount to being too able to move the unit with ease. Consequently, to facilitate drainage of tank embodiments, which are provided with a raiser tube as fill-control, a cam-valved drainage access may be present near or at the lowest fill level of the tank in the raiser tube. This provides a quick way for the operator to drain the water storage container via the unit's water drainage coupling. A 180 degree turn of the cam will activate the cam and drain the storage container to waste, without having to move or disassemble the unit.
Preferred unit embodiments will incorporate water filtering arrangements/facilities within the housing, accessible through a removable housing panel(s) as is known in the art.
Advantageously also, the housing of the station can be devised with means to secure interchangeable information or signage panels. These panels could even be made integral part of the normal housing panels that encase the internal frame work.
If desired, a solar light module can be provided, to enable temporary illumination of the station overall or at least the water dispensing spouts.
In similar vein, although such equipment increases transport weight of the station, water cooling equipment may be incorporated into the housing, powered either through a suitable connection to external mains power, or by an on-board battery which may be of rechargeable capacitive type.
An illustrative implementation of the present innovation will be described in the following with reference to the accompanying drawings by way of a number of non-limiting embodiments.
It is to be understood that the invention is described herein below with reference to particular embodiments of the invention, but that there exist alternative implementations of the present invention. The implementations described are intended to be illustrative of the invention, and not limitative. Equally, the illustrations have been simplified by not showing (omitting) representation of the portable water dispensing unit's internal water supply plumbing and water spillage drainage plumbing, as these, whilst present in a working water dispensing unit, are not relevant in the context of the improvements described and claimed herein.
Finally, where relative terms such as upper, lower, front, rear, lateral etc are used, these are intended to provide reference points for locating components of the station 10 illustrated.
Referring first to
But for the incorporation of a drinking fountain 32, as will be described below in more detail, the embodiments of
Referring first to housing 12, it is assembled from lightweight steel sections which provide a roughly box-shaped framework onto which thin steel sheet panels are fastened externally to provide lateral side panels 14, 16, a top cap 18 and a bottom panel 20 (see
Front and rear panels 62/63 can be used to display signage or may be provided with additional fasteners to secure separate display panels with such signage and information materials.
As will be noted, housing 12 has a rectangular cross-section, wherein preferably the width is typically two to four times a depth of the unit, and the height three to five or more times the width. Typical dimensions might be width of 350 mm to 600 mm, depth 100 mm to 300 mm and height up to 1500 mm.
Housing 12 thus defines a rectangular columnar body having a greater propensity to be tipped-over by loads applied on the front and rear side faces than loads applied perpendicular to the narrower lateral side faces of the housing 12.
To counter against tipping moments, and for supporting housing 12 on a stand surface (ground) where portable water dispensing station 10 is to be deployed temporarily, a pair of base flaps 28 and 30 are permanently mounted to the lower end at the front and the rear faces of the housing's framework in an articulated (ie hinged) manner, as explained in more detail below.
Base flaps 28, 30 can be deployed individually (as illustrated by arrows in
To assist in the transportation of station 10 to a place where it is to be temporarily deployed, two coaxially spaced apart transport wheels 24, 26 are mounted using respective axle bolts 74 near the front lower edge of housing 12 to respective lateral side flanges 68, 69 either side of traverse front frame section 22 to which bottom panel 20 is fastened, see
Wheels 24, 26, comprise a metallic hub on which are mounted (or integrally formed) tyres made of soft rubber or another polymer material As seen in
As explained in more detail below, at least one but preferably both of the base flaps 28, 30 is/are shaped and/or articulated to the housing framework near the bottom of housing 10 in such manner that when being moved into and reaching their fully deployed, horizontal position, wheels 24, 26 are lifted by a predetermined small distance from the stand surface/ground level. This increases stability and counters against sliding of the station with its deployed rear and front base flaps 28, 30.
Front and rear base flaps 28, 30 have a width similar to the width of housing 12, and preferably a length approximately 1/6 to 1/4 of the height of housing 12, thus increasing inertia moments once deployed to stabilise station 10. Base flaps 28, 30 are essentially comprised of a rectangular metallic or composite, high rigidity plate 76 secured between two metallic mounting profiles or brackets 78, 80. Mounting profiles 78, 80 are forged or moulded L-sections. Alternatively, the plate 76 and L-sections 78, 80 could be cast as a unitary body.
The front base flap 28 will be seen in
The rear base flap 30 will be seen in
That is, L-profiles 78, 80 are respectively pivoted near the intersection of their longer leg portion 82 at which plate 76 is secured using suitable screws or bolts, and their shorter leg portion 83, at the width-ward sides of the lower part of housing 12. The base plates 76 have a suitably patterned or shaped surface on the face which in deployed state of the base flaps 28, 30 abuts the ground surface. This increases frictional engagement between base flaps 28, 30 and stand surface when the former are deployed.
As noted above, front base flap 28 is articulated at housing 12 about a same axis of rotation as that common to the pair of support wheels 24 and 26. The axis of rotation is located close to the front side lower edge of housing 12 such that the housing may be tipped over in controlled manner and the wheels 24, 26 maintain ground engagement. Such tipping can be effected once the front-side base flap 28 is in its stored position in which it extends substantially parallel to the front face of housing 12, such that the unit can be moved like a two-wheeled transport trolley from/to its deployment location.
Furthermore, this preferred arrangement enables station 10 to be tilted about the lower front edge, more precisely about the axis of rotation of the unit's pair of wheels 24, 26, with only the base flap 28 sharing this axis of rotation having to be unlocked and pivoted into its storage/transport position. The other base flap 30, at the rear side/face of housing 12, may remain in its fully deployed position. In that way, the still deployed base flap 30 may serve as a temporary surface for transporting boxes and other equipment together with the station (
One further characteristic feature of station 10 is an arrangement whereby the transport wheels 24, 26 are lifted from the stand surface (ie ground) automatically as part of the deployment of in particular the front base flap 28 from its storage position into its fully deployed horizontal orientation. This is not consequence of the front base flap 28 sharing the axle (bolts 74) of the wheel pair 24, 26, rather by providing that a distance c (see
Given that the relevant base flap 28 pivots off the same axis of rotation (or shaft) used by the wheels 24, 26, it is preferred that the base flap 28 exhibits a somewhat rounded profile at the ground-engaging side closest to the axis of rotation, to facilitate full rotation of the base flap 28 into its fully deployed position after that rear part first engages with the ground during the flap's pivoting movement and subsequently lifts the wheels of the ground. In the embodiment illustrated, it will be noted that the L-brackets 78, 80 of the front base flap 28 have an inwardly recessed knee at the intersection between the longer and shorter leg portions 82 and 83, thereby allowing wheels 24, 26 to remain in contact with the ground when the housing 12 is tilted over, see
The station 10 further comprises for each base flap 28, 30 one (but it could be two) arresting or locking mechanism to arrest/lock the base flaps 28, 30 in the deployed positions. A first embodiment is illustrated in
Turning first to the first embodiment of the arresting mechanism illustrated in
Each of the arresting mechanisms is comprised of a pivotable locking latch arm 84 (also referred herein as a toggle strap) and an associated biasing element 90.
Locking latch arm 84 has an arrester notch 86 about a third way in from a free terminal end of the arm 84 and is secured near its opposite terminal end in articulated manner (pivot point 84) to the end of shorter leg portion 83 of one of the L-profiles 78, 80 of flaps 28, 30. Arrester notch 86 can be brought into and out of engagement with a retainer ledge, see detail D in
The biasing element 90 is provided in the illustrated embodiment by a pressure gas spring, in this case a linear cylinder—piston actuator 90 biased against compression, extending about vertically within housing 12. Biasing actuator 90 is pivotally secured at its upper cylinder end 91 at a fixed location to an internal side panel (illustrated) or a traverse section (not illustrated) of the housing framework. Actuator 90 is also secured pivotally at its lower free end 92 near to or at a guide pin/follower cam 94 positionally fixed and carried around midway at locking latch arm 84. That is, the lower end 92 will move in unison with rotation of locking latch arm 84.
The pivoting points of and mounting geometry of actuator 90 are such that it exerts a normal force seeking to linearly extend the lower movable (rod) end 92 away from its upper (cylinder) fixed connection point 91 and depending on the spatial location of the lower end 92 positively biases locking latch 84 anticlockwise so that it can remain in its deployed, flap-movement arresting position in which arrester notch 86 remains engaged at its counterpart ledge at opening 88 (right hand side of the illustration in
As will be noted from
It will also be noted that each base flap 28 and 30 has two actuators 90 associated therewith, one on each width ward side on the lateral sides of housing 12, but in the illustrated embodiment only a single locking latch arm 84.
The geometric arrangement of fixed and movable pivots 91, 92 of actuators 90, as well as the location of the axes of rotation of base flaps 28, 30 at housing 12 are chosen and correlated such that the force exerted by actuators 90 primarily seeks to bias the base flaps 28 and 30 into their deployed state where they extend perpendicular to the front and rear faces of housing 12. Rotation from the deployed state into the retracted or stored state is initially effected against the biasing force, whereas once a certain rotation degree towards the stored state is past, actuators 90 will seek to assist in slightly biasing the base flaps 28, 30 to maintain the stored positions where these extend parallel to the front and rear faces of housing 12.
The arresting mechanism is furthermore configured to be manually releasable. To this end, locking latch arm 84 comprises an integral lever portion extending from its notch (86) location to its terminal free end protruding from the lower front or rear panels 60, 61, as the case may be. The release function for each of the base flaps 28, 30 is thus easily accessible from the front and rear side, respectively, of housing 12. The lever portion will be dimensioned such that the lever action that can be imparted is sufficient to overcome the biasing force F exerted by actuator 90 onto the locking latch 84, and move the locking latch 84 out of engagement with the retainer ledge at opening 88.
Locking latch arm 84 also includes guiding pin/follower cam 94 mentioned above, which protrudes sideways from both faces of arm 84. The follower cam 94 engages/is received within a curved slot formed at the housing 12 by respective complementary arcuate channels or grooves 70 at integral mounting flange portions of lateral side panels 16 and 14 on the one hand, and arcuate channels or grooves 71 at the respectively facing inner mounting flange 68 and 69 which support both the wheels 24, 26 and base flaps 28 and 30, on the other; see
In similar fashion, the L-profiles 78, 80 of base flaps 28, 30 opposite to those carrying a latch arm 84, ie those that do not carry such, also comprise a similar guide pin/follower cam 95 near the end of shorter L-arm 83 as seen on the top right-hand side corner in
It will be understood that the diameter of follower cam 94 at latch arm 84 is smaller than the width of curved slot 96 near the terminal end closest to the front (as compared to the bottom) face of housing 12. Alternatively, arcuate slot 96 may have a width slightly greater than follower cam/guiding pin 94 to ensure controlled movement of the base plates 28, 30 during rotation between deployed and storage positions, but terminate in a downward pointing portion which will enable the latching arm 84 to be pushed downwards by the associated actuator 90 for its notch 86 to move into and remain in biased engagement with the arresting ledge at opening 88.
Curved (arcuate) slot 96 thereby also promotes guidance of the locking strap/latch arm 84 during rotation of base flaps 28 and 30 between stored and deployed positions, also thereby ensuring that the locking latch 84 is correctly orientated and directed to engage with its cooperating retainer at the housing.
Turning next to the second embodiment of the arresting mechanism as illustrated in
In the second embodiment, the arresting mechanisms for the front and rear side base flaps 28, 30 are identical to each other as is apparent from the figures, and each is essentially comprised of four co-operating functional units and components, namely a biasing actuator 90, a locking latch member 130 acted upon by the biasing actuator 90, a pivoted release lever 146 coupled to the locking latch member 130 in a manner that enables the latch member 130 to be moved (displaced) against the biasing force exerted by the biasing actuator 90 and a locking cam 154 disposed to rotate together with the respective base flap 28, 30 and about their respective axles 74/75, the locking cam 154 cooperating with the locking latch member 130 to arrest rotational movement of the base flap 28, 30 when in and from the fully deployed state to the retracted state.
In detail, it will be noted that biasing actuator 90 is embodied again as a pressure gas spring, in this case a linear cylinder-piston actuator biased against compression, having an upper end of its cylinder suitably secured in pivoted manner at fixing point 91 to a frame member (not shown) of housing 12, whereas the lower terminal end of its piston rod is secured at pivot axle 92 to an upper, free terminal end 131 of the bar-or rigid strap-like locking latch member 130. Locking latch member 130 is held at a frame section 144 of housing 12 by a retainer 140 in a manner that allows restricted to-and-fro linear motion of it along an axis slightly inclined to Vertical, but hinders rotation. Retainer 140 heretofore comprises a retainer plate 141 and two bolts 142 parallel spaced apart and fixed to frame section 144, the bolts 142 extending through a longitudinal through-hole (guide slot) 133 of member 130, in essence providing a sliding block guide.
It may further be gleaned from
In the embodiment illustrated, it will also be seen that locking cam 154 is integrally formed at the shorter arm 83 of one of the mounting profiles/brackets 78/80 of the base plate 28/30, the mounting profile 78/80 still roughly resembling an L-profile but one in which the shorter arm 83 curves away from its juncture with the longer arm 82. At 74 and 75 are indicated the mounting bolts/axles which provide the hinge connection of the front and rear side base flaps 74 and 76 to the housing 12. Of course, a separate cam disc could be provided instead, a requirement then being that it be suitably secured against rotation with respect to the base flaps 28, 30 so that the cam discs rotate with the flaps about axles 74, 75.
Each locking cam 154 has or defines a guide surface 156 curving about the rotation axis (provided by axles 74/75) about which base flaps 28, 30 rotate, the aforementioned follower roller 134 of the locking latch member 130 being biased by actuator 90 to maintain engagement with and ride the guide surface 156 of the locking cam in crank-like manner during rotation of the hinged base flap 28/30 between its stored and fully deployed position. In essence, the actual contour of the guide surface 156 (ie the radial distance of any given guide surface section from the rotation axis at 74/75) will dictate whether and to what extent the locking latch 130 will move to and fro along the retainer 140 against the force imparted on it by the actuator 90.
It will be further noted that a radially-inward directed step (or depression) 158 is formed at one end of the about quarter-arc length cam guide surface 156, coinciding with the rotational position in which the base flap 28/30 attains its fully deployed state, as illustrated in
The step/depression 158 at the end of the guide surface 154 provides a locking stop (at the step 158) for the locking latch member 130 into which it's follower roller 134 will be biased/moved by actuator 90 during rotation of the base flap 28/30 when reaching its fully deployed state as illustrated in
The small hump 159 of the guide surface over which the terminal end (ie follower roller 134) of the latch member 130 will ride immediately before the base flap 28/30 is rotated into its stored (or closed) position illustrated in
A release mechanism is provided to release the locked position of locking latch member 130 at cam step 158. To this end, a single piece, rigid release lever 146 is pivotally secured to aforementioned frame section 144 of housing 12 near its centre about bolt axle 150. The freedom of rotational movement of the lever 146 is constrained/limited by a further sliding block guide which couples an upper terminal end 148 of lever 146 to a retainer and follower bolt 152 fixed to one side of locking latch member 130 located upwards from the guiding slot 133 for the latch member's retainer 140. The follower bolt 152 locates and extends through a guide slot 149 (long hole) formed in the angled upper terminal end 148 of release lever 146.
It will be appreciated that this articulated coupling of release lever 146 and locking latch member 130 enables the latch member 130 to be moved (displaced) upwards against the biasing force exerted by the biasing actuator 90 by pushing (exerting sufficient force on) the lower terminal end 147 of release lever 146 downwards whereby rotation about axle 150 causes the upper angled end 148 of release lever 146 to rotate counter direction wise and consequently forcibly displace follower bolt 152 from its initial position near or at a lower terminal end of guide slot 149 towards the final (restrained) position at an upper terminal end of slot 149 and in the process raise the lower terminal end 132 of locking latch 130 out of engagement with step 158 of locking cam 154. It will be appreciated that geometrise/dimensions of the individual components and relative positioning thereof can be chosen such that the described lever action is sufficient to impart a release moment sufficient to overcome the biasing force exerted by the biasing actuator 90 onto the locking latch member 130.
in a state (a) in which both base flaps 28, 30 are in a fully retracted (or closed) transport position, whereby the bias F exerted by actuators 90 onto locking latch members 130 and the presence of the shallow retention hump 159 at clocking cam 154 assist in keeping the base flaps 28, 30 folded up against the housing 12:
in a state (b) in which one of the base flaps 30 has been rotated into its fully deployed and arrested/locked position to extend perpendicular from the (front) housing face and in which the lower end of locking latch member 130 has been biased to locate in the stepped depression 158 of locking cam 15;
in a state (c) in which the fully deployed base flap 30 is no longer arrested against rotational movement as consequence of the release lever 146 having been depressed to cause the lower end of locking latch member 130 to locate above and outside of the stepped depression 158 of locking cam 15; and
in an intermediate state (d) in which the base flap 30 is freely rotatable between the fully deployed and fully retracted states wherein the follower roller 134 of the locking latch member 13 travels along the guide surface 156 of locking cam 154 without hindering deployment.
Reverting then to the further layout of station 10,
The actual water dispensing spouts are not visible in the figures but are received within shrouds 44, 54 overhead the cavities/recesses 41, 51 so as locate above a bottle received within cavities 41, 51 and to hinder direct contact with the container filling outlet.
The support stand surfaces 46, 56 of each water bottle refill location 40, 50 will include a spill-over drainage inlet (covered by a grate or suitably tight-meshed strainer) 48, 58 connected to water drainage pipework received within housing 12.
The third water dispensing outlet 38 is incorporated in a traditional bubbler-style drinking fountain 32 present at a tray 34 which, however, rather than being fixed and stationary at housing 12, is articulated between two upright framework sections at the front of housing 12, immediately below the front water bottle re-fill location 50. This enables the hinged bubbler tray 34 to be deployed between an arrestable folded-down transport position about flush with the front face of housing 12 and an arrested but releasable deployed position in which the tray 34 extends about perpendicular from the housing's front side, as illustrated in
The tray 34 will advantageously be located at a height suitable for access by people in wheel chairs and/or children. The tray will advantageously have a top surface 35 which is concave, draining towards a drainage channel or drain hole 39 which in turn is in communication with the internal drainage pipework of station 10. Incorporation of a folding drinking fountain tray 32 makes the station 10 compact and easier to transport and store while not in use.
Each water dispensing outlet 32, 40 and 50 is arranged to be actuated independently by way of a respective actuator 36, 45, 55, wherein each actuator is disposed at a location on housing 12 which is in vicinity of its respective outlet. The skilled person is cognisant of various ways how water flow through the dispensing outlets can be regulated and accomplished, eg push-button shutter valves, twist-handled shutter valves, turn-knob shutter valves, etc.
As noted, station 10 comprises internal water drainage pipework plumbed to drain water spilled from the water dispensing outlet(s) into associated drainage inlets towards an externally accessible water drainage coupling of the unit. In similar fashion, an internal water supply pipework will be plumbed to supply water from an externally accessible water inlet coupling at the housing to the multiple water dispensing outlets arranged at different points about housing 12.
The skilled person will appreciate that there are multiple ways in which the hydraulic water supply pipework as well as the drainage pipework of station 10 may be embodied, with appropriate hydraulic equipment components known in the art, such as mains water pressure reducers, flow-switching and/or shut-off valves, couplings to connect the station to a mains water supply and to a drainage facility, rigid and flexible water pipes, etc. Consequently, the hydraulic set-up will not be described in further detail; and illustration of the supply and drainage pipework has been omitted from
The skilled person will also appreciate that there are various types of suitable water inlet and outlet couplings that can be employed in station 10. The embodiment illustrated shows a station 10 that can be connected in series with other similar stations to provide a bank of interconnected stations in similar fashion to that described in patent publication US 2015/0101119 A1, the contents of which is incorporated herein by way of short-hand cross-reference in so far as water supply and drainage pipeworks are concerned. The water supply, drainage and station-interconnecting couplings 120, 122 and 124 illustrated in
In order to further increase stability of the station 10 (also termed unit herein) when deployed, a polymer blow-moulded water ballast tank 96 with a typical capacity of between 8 to 15 litres is received in the aforementioned ballast tank casing 66 located within the lower part of housing 12 as shown in
Ballast tank 96 is moulded from a suitable polymer material by injection or rotational moulding and comprises a solid base block 97 with internal discharge channels (eg 106, see below) and a peripheral wall 98 surrounding the tank cavity 99. A baffle plate 100 closes the open top of tank 96 for stopping water inside the tank splashing if the housing 12 is moved or knocked by someone; baffle plate 100 is devised to prevent the water in the ballast tank 96 being carried by the initial inertia of the applied force, and to stop the transfer of momentum which could create a knock-on effect and topple the unit 10 over.
As can be seen from
Alternatively, ballast tank 96 could have a valved tank water inlet located in tank wall 98 plumbed to the internal water supply pipework which supplies water bottle filling locations 40 and 50 as well as drinking fountain 3 from the mains water coupling 120 of station 10, so that it can be filled prior to station 10 being readied for use.
Once ballast tank 96 is filled, it lowers the centre of gravity of the station and increase stability of housing 12 against being tipped-over.
Noting that water ballast tank 96 is plumbed to receive drainage water, it could be provided with a shut-off valve that prevents drainage water being supplied to tank 96 once station 10 is in normal use after tank 96 is filled to provide the ballast functionality. Alternatively, and this embodiment is shown in
That is, one can dispense with a separate valved tank filling arrangement, and instead spill water drainage from the station's water outlets at 32, 40 and 50 via the associated drainages 39, 48 and 58 is always accomplished via directing it first into and then from ballast tank 96 to waste via the station's drainage water outlet coupling 122. To this end, it is necessary to have a tank overflow prevention mechanism, which in its simplest form is a tank-internal weir structure from where spill water above a certain fill-degree of tank 96 is continuously removed. In the illustrated embodiment, the weir structure comprises a tank-internal riser pipe 104 with its upper terminal end located in tank headspace 105, secured with its lower terminal end in a drainage channel in base block 97 and plumbed to the station's drainage water outlet coupling 122 via outlet channels 106 in block 97 below the terminal end of riser pipe 104.
Water in the ballast tank's cavity 99 will add considerable mass to the housing 12 which will increase stability but restrict transportability of station 10. The need to drain ballast tank 96 after the station is no longer in use is paramount to being able to move station 10 with ease.
Consequently, to facilitate full drainage of tank embodiments which are provided with riser tube 104 as fill-control, a cam-valved drainage arrangement 108 is present in base block 97. A 180 degrees rotatable cylindrical valve body 110 with associated external turning knob 111 and internal rear cam plate 112 is received sealingly within a bore in base block 97 such that rear cam plate 112 extends into the tubular recess 114 which receives riser tube 104. Cam plate 112 secures push rod 115 extending upwards within riser tube 104 which in turn carries closure plug 116 which serves to selectively block discharge holes 118 in riser tube 104 as a function of rotational position of valve body 110. This arrangement enables quick drainage of water from tank 96 via discharge openings 106 in base block 97 towards the station's drainage water outlet coupling 122.
The skilled person will appreciate that the above described and in the figures illustrated embodiment may be modified without the need to add skills beyond those available to the skilled worker in the art. For example, the biasing actuators 90 may be replaced with other biasing arrangements, such as torsional springs acting on the locking latch 84.
The materials and components employed in the manufacture of the housing/cabinet 12 are also known to the skilled worker, and whilst a metal housing using sheet metal and sections is preferred, some of the panels could be replaces with impact resistant polymer sheets made of ABS or similar.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201803535 | Sep 2018 | AU | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/AU2019/051011 | 9/20/2019 | WO |
