Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47H—FURNISHINGS FOR WINDOWS OR DOORS
  • A47H1/00—Curtain suspension devices
  • A47H1/04—Curtain rails
  • A47H1/08—Curtain rails extensible
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47H—FURNISHINGS FOR WINDOWS OR DOORS
  • A47H15/00—Runners or gliders for supporting curtains on rails or rods
  • A47H15/04—Gliders

Definitions

• This invention relates to supports of the kind comprising an elongate track in the form of a rail or beam and a plurality of travellers mounted on that track for movement therealong.
• the member or structure to be supported is connected to one or more of the travellers.
• Such supports are commonly used for curtains and the like and it will be convenient to hereinafter describe the invention with reference to a track particularly suited for that example use.
• curtain support tracks are generally supplied in telescopic form so that they can be readily adapted to a variety of use situations.
• a track will include two tubular sections, one of which is slidable within the other.
• Each metal section is usually of "C" shape in cross-section so as to have a slot extending throughout its length and in the assembled condition of the track the two slots are aligned and are on the same side.
• Each traveller comprises a slider or roller unit having a bearing part which locates within the aforementioned slot and a hanger part depending downwardly from the bearing part for attachment to a curtain for example.
• the bearing part whether it be a slider or roller, engages the lower edge of the longitudinal slot and tracks along that edge as the associated curtain is opened and closed.
• a principal difficulty with such supports arises from the fact that the. traveller is required to move from engagement with one track section to engagement with the other.
• the engaging edges of the respective track sections are of course not aligned because of the different sizes of those sections and consequently a lateral step occurs at each end of the transition zone over which the traveller passes when being transferred from support by one track section to support by the other.
• the two track sections are telescoped in that transition zone so they provide simultaneous support for a traveller located in that zone.
• the bearing part of the traveller must then have sufficient width to accept the double edge support of the transition zone. Consequently, when the bearing part engages a single edge support as provided beyond each end of the transition zone, it is able to move laterally relative to that edge to a substantial extent. The traveller then tends to foul with the lateral step at each end of the transition zone thereby disturbing smooth operation of the tracking system.
• a support track assembly including a tubular guide track comprising an outer and an inner elongate track section, said inner track section telescopically locating within said outer track section and projecting beyond an end thereof, a slot formed through a side wall of each said track section and extending the full length thereof, said side walls being adjacent walls of said track sections and said slots being in substantial lateral alignment, a lower edge of each said slot forming a respective traveller support surface, adjacent portions of said side walls being laterally offset relative to one another so that a space exists between them over the telescoped length of said track sections, each said portion including an edge of the respective said slot and extending the length thereof, at least one traveller having a bearing part projecting transversely through at least one of said slots and a hanger part depending from said bearing part and located externally of said guide track, said bearing part having two tracking portions each of which is engageable with a respective one of said traveller support surfaces for movement therealong, guide means on said traveller co-operating with said guide track
• Figure 1 is a semi-diagrammatic back view of a telescopic track assembly of the kind to which the invention is applicable.
• Figure 2 is a perspective view of part of telescoped track sections of the kind commonly used prior to the present invention.
• Figure 3 is an enlarged transverse cross-sectional view taken along line III-III of Figure 1 assuming that the track sections of Figure 1 are of the kind shown in Figure 2.
• Figure 4 is a view similar, to Figure 2 but showing track sections incorporating the present invention and also showing a traveller, of the kind usable with those track sections.
• Figure 5 is a view similar to Figure 3 but showing track sections and a traveller incorporating the present invention.
• Figure 6 is an enlarged transverse cross-sectional view taken along line VI-VI of Figure 1 but assuming that the track sections are of the kind shown in Figure 4.
• Figure 7 is an enlarged transverse cross-sectional view taken along VII-VII of Figure 1 but assuming that the track sections are of the kind shown in Figure 4.
• Figure 8 is a rear side view of a pulley housing at one. end of the track assembly as shown in Figure 4.
• Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8.
• the typical track assembly shown in Figure 1 includes an outer track section 1 and an inner track section 2 having an end portion telescopically located within the outer section 1. Both sections 1 and 2 are elongate and they have a longitudinally extending slot 3 and 4 respectively formed through a rear side wall 5 and 6 respectively. Suitable mounting brackets 7 and 8 are provided at each end to support the track assembly and at least one intermediate bracket (not shown) may be also included. Travellers 9 of suitable construction are slidably located within the slots 3 and 4 and each has a bearing part 10 and a hanger part 11.
• Figure 2 illustrates the general form of the track sections 1 and 2 as commonly used prior to the present invention.
• the tracking portion 15 ( Figure 3) of each traveller 9 which engages the support edges 12 and 13 must be sufficiently wide to accept the double edge support existing within the telescoped portion 14. In that regard, it is generally required that all travellers 9 be of the same form and capable of movement from one track section to the other.
• Figure 4 shows part only of a preferred form of track assembly incorporating the present invention together with, one form of traveller suitable for use with, that track assembly.
• a support track according to the present invention includes two slotted and telescopic sections 101 and 102 as in the prior constructions, but is characterised in that the respective traveller engaging edges 112 and 113 of the two sections 101 and 102 are laterally spaced in the telescoped portion 114 rather than being located against one another as in the prior constructions. That is, a space 116 exists between the two edges 112 and 113 in the telescoped portion 114.
• Each section 101 and 102 is of consistent cross-section throughout its length so the space 116 will exist regardless of the length of the portion 114.
• the bearing part 110 of a traveller 109 for use with the track sections 101 and 102 has two separated bearing portions 115a and 115b each of which is engageable with a respective one of the two track edges 112 and 113 as best seen in figures 5 to 7.
• each track section 101 and 102 is substantially square or rectangular in cross-section.
• Such a "square" corner configuration lends itself to greater accuracy in manufacturing than does the conventional rounded or "C” configuration. That is, tolerances are easier, to maintain so that suitable co-operation between the inner and outer sections 102 and 101 respectively, can be constantly achieved.
• a longitudinally extending slot 103, 104 is formed through a rear side wall 105, 106 of each of the two sections 101 and 102 and that slot 103, 104 is preferably located so that a portion of the respective side wall 105, 106 remains both below and above the slot 103, 104 as shown in Figures 5 to 7.
• the rear side wall 106 of the inner track section 102 is substantially flat.
• the rear side wall 105 of. the outer section 101 is stepped outwardly at locations 117 and 118 above and below respectively the slot 103 so that the slot 103 is formed in a part of the wall 105 which is spaced outwardly from the adjacent part of the wall 106. It then follows that the traveller engaging edges 112 and 113 of the two track sections 101 and 102 are spaced apart in the overlapped portion 114 of the two sections 101 and 102 when telescoped together.
• the slots 103 and 104 are in subs-tanitial lateral alignment and may be of the same width.
• the result described above can be achieved with other configurations of the track section and in other ways.
• the side wall 106 of the inner track section 102 may be stepped inwardly to achieve the desired spacing and that may be done as an alternative to, or additional to the outward recessing of the outer track section 101.
• the particular track sections 101 and 102 as shown are each stepped inwardly on both sides immediately below the respective upper wall 119 and 120 to form front and back projecting lips 121 and 122 and 123 and 124 respectively.
• Those lips function as part of the attaching means for the track sections 101 and 102 whereby they can be attached to supporting brackets 125 as shown in Figures 6 and 7.
• Each, bracket 125 has a plate 126 which overlies the track section top wall 119 or 120 and has an outer hooked portion 125 which engages beneath the front lip 121 or 123.
• a cam member 128 releasably secured beneath the plate 126 or another part of the bracket 125 has bevelled clamping edges 129 and 130 which are spaced differently from the centre line 131 of the means whereby the cam member 128 is secured to the bracket 125. That is, the distance L is greater than the distance S ( Figures 6 and 7).
• the edges 129 and 130 are adapted to engage beneath the back lip 122 and 124 of the sections 101 and 102 respectively, and the cam member 128 is secured to the plate 126 or bracket 125 in either of two positions depending upon which track section 101 or 102 it is to engage.
• the arrangement is such that the cam member 128 wedges against the back lip 122 or 124 so as to clamp the respective track section in position.
• a pulley housing 132 is provided at one end (at least) of the track assembly 101, 102 and may be constructed as shown in Figures 8 and 9.
• the housing 132 contains a pair of pulleys 133 and 134 each of which is engaged by a respective section 135 and 136 of the track cord.
• the housing 132 may be manufactured from a suitable plastics material and comprises a body part 137 and a cover plate 138.
• the housing 132 is thereby secured in position by the same bracket as used to directly support the track sections 101 and 102 and the construction and mounting of the housing 132 is relatively simple.
• a traveller 109 for use with the track sections 101, 102 described may comprise a slidable bearing part 110 formed integral with a hanger part 111 as shown in Figures 1 and 5 to 7.
• the bearing part 110 is substantially cylindrical and has two circumferential flanges 143 and
• the axial spacing between the flanges 143 and 144 and between the flange 144 and surface 145, is greater than the width of the traveller supporting edges 113 and 112 to be received therebetween. As shown, it is preferred to provide spacer rib 146 on the flange 143 and the surface
• a cylindrical tracking portion 115a and 115b is provided between the flange 144 and surface 145 and between the flanges 143 and 144 respectively.
• the diameter of each tracking portion 115a and 115b is less than the width of the slots 103 and 104 so as to allow free movement of the traveller 109 along the slots 103 and 104.
• the flanges 143 and 144 and the surface 145 constitute guide means for the traveller 109 which co-operate with the track sections 101 and 102 to keep the traveller 109 in place.
• the intermediate flange 144 is located in the space 116 between the slotted walls 105 and 106 of the two sections 101 and 102 and the flange 143 and surface 145 are located on the inside of the inner section 102 and the outside of the outer section 101 respectively.
• the tracking portions 115a and 115b bear on the support edges 112 and 113 respectively.
• the traveller 109 is thereby restrained against excessive movement, transverse to the track regardless of whether it engages one or both of the track sections 101 and 102. That is, the traveller 109 has an independent tracking groove for co-operation with each of the track sections 101 and 102.
• a roller - type traveller can be arranged in substantially the same manner as the sliding type described above.
• a single roller may be provided with, an intermediate flange and end flanges which, functions as in the slider described.
• a separate end flanged roller may be provided for each, track section 101 and 102.

Landscapes

• Curtains And Furnishings For Windows Or Doors (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=3769003

Family Applications (1)

Country Status (5)

Families Citing this family (4)

Family Cites Families (4)

• 1982
  • 1982-03-12 NZ NZ199996A patent/NZ199996A/xx unknown
  • 1982-03-17 ZA ZA821808A patent/ZA821808B/xx unknown
  • 1982-03-17 EP EP19820900774 patent/EP0074958A4/de not_active Ceased
  • 1982-03-17 WO PCT/AU1982/000029 patent/WO1982003165A1/en not_active Ceased
  • 1982-03-19 CA CA000398809A patent/CA1183446A/en not_active Expired

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