AU2014259491A1 - Stand post - Google Patents

Abstract

A standpost adapted to have a plurality of boom members mounted thereto for supporting shading apparatus at their outer ends, the standpost including: a centre portion; and a plurality of tracks spaced around said centre portion and extending at least partially therealong, each track being adapted to support a carriage for up and down movement therealong and being defined by an inner guide and an outer guide adapted to retain therebetween a runner of the carriage to be supported by the track, said centre portion being hollow and adapted to house therein one or more cables extending along its length for connection at one end to carriages running on said plurality of tracks, the carriages being adapted to have boom members mounted thereto for up and down movement therewith along the standpost.

Description

1 STANDPOST This invention relates to a standpost. The invention has particular application to a standpost for shading apparatus of the type which has a stowable or collapsible canopy but it 5 also may have application to apparatus having permanently erected canopies. In this specification, the terms "upper", "lower", "vertical", "horizontal" and the like are used for the purpose of describing the invention by reference to its normal in use 0 attitude and are not intended to limit the invention to any particular orientation. In one aspect the invention resides broadly in a standpost adapted to have a plurality of boom members mounted thereto for supporting shading apparatus at their outer ends, 5 the standpost including: a centre portion; and a plurality of tracks spaced around said centre portion and extending at least partially therealong, each track supporting a carriage for independent up and down movement 20 therealong and having an inner guide and an outer guide opposed to the inner guide for retaining therebetween a runner of each carriage to be supported by the track, said centre portion being hollow and adapted to house therein one or more cables extending along at least part of its length for 2 connection at one end to each carriage. Preferably, the standpost is for shading apparatus which includes the standpost and further includes a plurality of boom members slidably mounted to the standpost and extending 5 therefrom for movement therealong between selected positions; and a shade canopy mounted to each boom member. In another aspect the invention resides broadly in a standpost adapted to have a plurality of boom members mounted thereto for supporting shading apparatus at their outer ends, 0 the standpost including: a centre portion; and a plurality of tracks spaced around said centre portion and extending at least partially therealong, each track being adapted to support a carriage for independent up and down 5 movement therealong and being defined by an inner guide and an outer guide adapted to retain therebetween a runner of the carriage to be supported by the track. Preferably, the boom members are adapted to move through selected operative positions relative to said standpost from a 20 first operative position in which the shade canopy assumes a steeply tilted shading position to a final operative position in which the shade canopy assumes a level (or horizontal) shading position. Preferably, the boom members are adapted to move along said standpost independently of each other.

3 Preferably the apparatus includes drive means for driving movement of the boom members along the standpost. In a preferred form, the drive means are adapted to move the boom members independently of each other. In one such form, the 5 drive means are cable winches and a separate winch is provided for each boom member. Such winches may be mounted on or in the standpost for operating the respective boom members and may be hand actuated or electric motor actuated as required. Preferably, said standpost is an extruded member with 0 said tracks being contiguous with said centre portion. It is also preferred that said centre portion be hollow such that cables and rods for actuating said booms can be housed therein. In a preferred form, the apparatus includes two opposed boom members mounted to the standpost and for that 5 purpose the standpost has two opposed tracks on which respective carriages may be mounted for supporting the opposed shade canopies. In order that the invention may be more readily understood and put into practical effect, the invention will 20 now be described with reference to the accompanying drawings wherein: Fig. 1 is an elevation of shading apparatus with two canopies and having a standpost according to the invention, the canopies being illustrated in the level 4 (or horizontal) shading position; Fig. 2 is an elevation of the apparatus of Fig. 1 with the booms in the fully lowered position and the canopies in the stowed (or collapsed) position; 5 Fig. 3 is a plan view of one boom and canopy in the expanded and fully horizontal position; Fig. 4 is a sectional plan of the standpost of the apparatus of Fig. 1; and Fig. 5 is an expanded view of the standpost of Fig. 4 0 with two opposed carriages to which the respective booms are mounted. The shading apparatus 10 illustrated in Fig. 1 includes a standpost 11 to which two opposed boom members 12 and 13 are mounted via carriages 14 and 15 at one end thereof while 5 canopies 16 and 17 respectively depend therefrom at their other ends. Although the canopies are both shown in their horizontal shading positions in Fig. 1, the angle of tilt of each canopy can be changed by lowering the booms by sliding the carriages down the standpipe. For that purpose the 20 carriages are pivotally connected to the respective booms and the crank handles are connected to the booms by cables 22 and 23 such that the booms can be raised and lowered by rotation of the crank handles. Advantageously, the booms can be raised or lowered independently of each other. Suitably, the cables 5 pass through the centre passage 24 of the standpost and onto their respective crankshafts which pass horizontally through the standpost. The booms are biased to the down position shown in Fig. 2 5 (with the canopies collapsed) but can be secured in the top position shown in Fig. 1 (with the canopies erected and in the level or horizontal shading position) or in any one of three preset intermediate tilted positions by locating a pin in any one of the apertures 27, 28 or 29 (one set of three apertures 0 being provided for each boom) to secure the respective carriages in place once they have reached the desired position. The canopy is intended to remain erected while the boom is in any of those positions so that they can shade the desired area or act as wind breaks if required. 5 As can be more clearly seen in Fig. 5, the standpost has a substantially square hollow centre portion 31 and two opposed T-shaped portions 32 and 33 extending outwardly therefrom on opposite sides with the arms of one T having inner and outer faces 32a and 32b and the other having inner 20 and outer faces 33a and 33b respectively. Each T-shaped portion together with the adjacent wall of the square centre portion defines opposed spaces 34 and 36 for securing the carriages to the standpost as will be described in more detail later.

6 Each carriage has spaced apart side plates 41 and 42 and upper and lower pairs of inner rollers 43 and 44 which are mounted to the respective side plates and protrude into the spaces 34 and 36 of the standpost while upper and lower pairs 5 of outer rollers 45 and 46 also protrude from the respective side plates so as to run on the outer faces 32b and 33b of the T-shaped portions. The booms 12 and 13 are connected to the respective carriages 14 and 15 by mounting pins 48 and 49 extending between the two side plates and holding them 0 together and apart so as to allow some pivoting movement of the booms as they raise and lower while held by the links 51 and 52 respectively. It will be appreciated that the carriages and the respective booms attached thereto may be raised and lowered 5 along the standpost independently by rotating their respective handles 20 and 21 as required. While the foregoing description has been given by way of illustrative example of the invention, it will be understood that the invention may be embodied in many other forms and all 20 such forms are deemed to fall within the broad scope and ambit of the invention as claimed in the appended claims.

Claims (3)

1. A standpost adapted to have a plurality of boom members mounted thereto for supporting shading apparatus at their outer ends, the standpost including: a centre portion; and a plurality of tracks spaced around said centre portion and extending at least partially therealong, each track supporting a carriage for independent up and down movement therealong and having an inner guide and an outer guide opposed to the inner guide for retaining therebetween a runner of each carriage to be supported by the track, said centre portion being hollow and adapted to house therein one or more cables extending along at least part of its length for connection at one end to each carriage.

2. The standpost according to Claim 1, wherein the centre portion is a substantially square hollow centre portion having two opposed T-shaped portions extending outwardly therefrom on opposite sides.

3. The standpost according to Claim 2, wherein each T-shaped portion includes arms having inner and outer faces against which parts of the carriages may bear, each T-shaped portion together with the adjacent wall of the square centre portion defining opposed spaces for securing the carriages.