Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B7/00—Special arrangements or measures in connection with doors or windows
  • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
  • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips

Definitions

• This invention relates to smoke sealing systems and more particularly to smoke sealing systems applicable to sliding type doors.
• Lift doors may operate up to 50,000 openings per year and hence any smoke sealing system for use with sliding lift doors must remain efficient over many operations yet at the same time not cause wear or other damage to the door or be worn away to such an extent that
• smoke in this specification is generally used to signify air which is laden with particles of carbon and ash but also including ' carbon monoxide and perhaps other toxic gases. The term is therefore used to 10. signify an undesirable medium which could provide health and other problems to those who inhale it.
• the invention is therefore said to reside in an arrangement for effecting restriction of the passage of smoke laden air through a doorway where the doorway includes a sliding door arranged to effect a substantial 30. closure of the doorway characterised in that there are a plurality of bristles held in common parallel alignment held so as to project from a first support
• OM?I face to an extent to interact with a corresponding positioned opposite face where at least one of the faces is or is supported by the door and the other face is or is supported by means defining the doorway, 5.
• the bristles being held in sufficiently close alignment an collectively being of such a thickness across a narrowest width to provide for restriction of the passage of smoke laden air therepast.
• the doorway 10. and closure of the doorway may be a fire exit door, lift landing door or similar sliding door.
• the invention may be further said to reside in a smoke sealing system of a type to seal between an aperture and a closure member for the aperture the 15.
• closure member being of a sliding type where the sealing system includes a continuous brush means.
• a rigid shield means mounted adjacent to the brush means whereby to prevent large pieces of foreign material from being drawn into 20. the clearance gap between the closure member and the periphery of the aperture.
• the brush means may be affixed to the periphery of the aperture and then brush against the closure member or door, and in alternative cases the 25. brush may be fastened to the door or closure member and to brush against the periphery of the aperture.
• the actual arrangement will in practise depend upon the construction of the sliding door and some examples of these will be given with the specific embodiments of the invention.
• the brush means may include a brush assembly received in and supported by a socket assembly and it is the socket assembly that may be mounted onto the periphery of the aperture or onto the closure member.
• the shield 5. means may form part of the socket assembly be screw fitted onto the socket assembly or mounted thereon by means of resilient clips.
• the bristle or material of the brush may be selected from materials including nylon, polypropylene fibres, pig 10. bristle and polyethylene fibres.
• the brushes may be placed on the door frames to bear against the stiles of the door for the vertical sides of the apertures and to the head of the aperture to seal against the top of 15.
• the door and on the bottom the brush sealing strip may be affixed to the door itself so that as the door shuts the brush system brushes along the floor and provides a good seal once the door is shut.
• lift doors there are three main types 20. of lift doors. These are double opening doors with the leaves moving in one direction each, a double opening door with one door opening in front of the other and with one of the doors travelling at twice the speed of the other, and thirdly a single opening door, opening 25. to one side only.
• Each of these may use the sealing system as described in this invention but it will be realised that the sealing system for the double opening doors with both leaves moving in the same direction will have to be slightly different as a further seal 30. is required between the two sliding leaves.
• Fig. 1 shows one embodiment of a seal and shield 15. arrangement.
• Fig. 2 show a further embodiment of seal and shield.
• Fig. 3 shows a double opening lift door with brushes positioned but no shields positioned.
• Figs. 4a and 4b show the arrangement necessary 20. for one form of double opening lift door.
• Figs. 5a and 5b show a seal arrangement for a single opening lift door
• Figs. 6a and 6b show an arrangement for a further form of double opening doors.
• Fig. 1 the smoke sealing system generally shown as 1 is affixed between a fixed door frame member 2 and a sliding door 3.
• the smoke seal assembly 1 comprises an elongate 30. brush 4 shown here in cross-section which comprises a plurality of bristles supported in a metal clamp member 5.
• the metal clamp member 5 is received in a socket 6 in a support bracket 7.
• the support bracket 7 is affixed to the door frame member 2 by means of a screw 8.
• the screw 8 may be a socket head or countersunk head screw or other form of screw to prevent vandalism. 5.
• the aperture 9 in the socket assembly 7 may be elongate in a direction transverse to its length so that the brush may be moved in or out to adjust to ensure that the bristles are firmly in sealing engagement with the door 3.
• a shield arrangement 10 in this embodiment fastened by means of the same screw 8 and which may also be variably positioned to ensure that only a small gap 11 exists between the shield 10 and the dooir 3 so that as the door slides, foreign matter will
• the length of the bristles should be selected so that an efficent seal can be . obtained without the bristles bending over too far 20. and of course will depend upon the nominal spacing between the door and the door frame. There may be provided several sizes of the shield and several lengths of bristles so that a complete range of spacings can be obtained allowing for use of the adjustment slot 9.
• FIG. 2 An alternative embodiment is shown in Fig. 2 and in this figure the similar components have the same numbering as in Fig. 1.
• concealed fitting is used by providing a cover strip 12 which conceals the screw 30. 13 supporting the socket assembly onto the door frame member 2.
• adjustment of the bristle pressure against the door 3 is obtained by means of varying the position of the socket assembly 7 on the door frame member 2 by means of the slotted hole 14 through which 5. the screw 13 passes.
• Fig. 3 shows a typical arrangement of a lift landing door in' which a double door is used and in which both doors travel to the left in this illustration.
• the lift landing 20 has two doors 21 and 22 which 10. between them cover the entire opening of the .lift when the doors are shut.
• Brush sealing strips are provided completely around the frame of the door but in this embodiment they are not covered by the shield to more clearly show the brushes.
• brushes 15. are mounted completely around the two sides of the door frame and at the head of the door frame and that a further brush 23 is monted on door 21 to brush against door 22.
• Upon opening and closing the door 22 travels at twice the rate of the door 21 and hence a sealing 20. brush is needed between them to seal upon the final closure. Brushes are not drawn along the base of the doors as these are placed behind the doors mounted onto the doors and brushing onto the step area 24.
• Figs. 4a and 4b depict the sealing arrangement 25. for the most common lift door arrangement that with two doors travelling in opposite directions.
• Vertical, continuous brushes 30 are mounted on respective door frames 31 and 32 to brush against the door halves 33 and 34.
• Some form of resilient seal generally shown 30. at 35 may be used where the doors meet as there would be no sliding contact there.
• a brush 37 brushes against the top of the sliding door 33 before and at the base a further brush
• OMP 38 mounted onto the sliding door 33 brushes against the door step 39. There may be also provided a brush at the ends 40 at the bottom of the door to provide a complete seal.
• Fig. 5a shows an embodiment of lift landing doors in which, there is a single door travelling to the right to open.
• vertical continuous brushes 42 are mounted onto the respective door frame members
• Figs. 6a and 6b show the arrangement with two 20. doors travelling in the same direction and in this embodiment brushes 50 are mounted on respective door frames 51 and 52 to brush against the doors 53 and
• the invention is not limited to bristle assemblies of these dimensions but these are given for illustration 15. purposes only.

Landscapes

• Engineering & Computer Science (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=3693010

Family Applications (1)

Country Status (2)

Cited By (6)

Citations (5)

• 1983
  • 1983-01-27 EP EP19830900409 patent/EP0099903A1/de not_active Withdrawn
  • 1983-01-27 WO PCT/AU1983/000011 patent/WO1983002640A1/en unknown

Patent Citations (5)

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