CA2207244A1 - Chain driven door with lock - Google Patents
Chain driven door with lockInfo
- Publication number
- CA2207244A1 CA2207244A1 CA 2207244 CA2207244A CA2207244A1 CA 2207244 A1 CA2207244 A1 CA 2207244A1 CA 2207244 CA2207244 CA 2207244 CA 2207244 A CA2207244 A CA 2207244A CA 2207244 A1 CA2207244 A1 CA 2207244A1
- Authority
- CA
- Canada
- Prior art keywords
- door
- members
- door panel
- traveler
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
- E06B3/48—Wings connected at their edges, e.g. foldable wings
- E06B3/481—Wings foldable in a zig-zag manner or bi-fold wings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/605—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for folding wings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
- E05F15/668—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings
- E05F15/681—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings operated by flexible elongated pulling elements, e.g. belts
- E05F15/684—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings operated by flexible elongated pulling elements, e.g. belts by chains
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Extensible Doors And Revolving Doors (AREA)
Abstract
A door arrangement for mounting in the opening of a building comprises an upper panel and a lower panel connected for pivotal movement about a horizontal axis at the junction therebetween with the upper panel mounted for pivotal movement about a horizontal axis at the top edge of the panel relative to the building. The door panel is opened by pulling the lower edge of the lower panel upwardly in guide tracks on respective sides of the door panels. The door is locked by a lever projecting from the door panel and engaging an abutment on the ground so as to push the lower door panel in a direction to pivot the common axis of the door rearwardly into the plane of the opening.
Description
CHAIN DRIVEN DOOR WITH LOCK
FIELD OF THE INVENTION
The present invention relates to an overhead door construction for mounting on a building, in particular of the type utilizing a chain driven opening 5 and closing mechanism.
BACKGROUND
Overhead doors for mounting at a large opening in a building are well-known and a number of arrangements for actuating these doors such as hydraulic actuation, and counter-weight or counter-sprung door actuation are 1 0 available.
Hydraulic actuation generally has the problem that the hydraulic ram used to actuate the door is often arranged such that it applies a force to the building structure thus requiring the building structure to be sufficiently strengthened to accommodate the forces involved which can be relatively large 15 when the door opening is large. As well hydraulic door actuating means include the problem of being somewhat complex and can be costly due to the expense of having to provide a powered hydraulic system.
Counter-weight actuated doors and counter-sprung actuated doors generally require an upwardly curving rail system which extends upwards and 20 into the building and requires that an area equal to the area of the door be available adjacent the ceiling to accommodate the door when in the open position. Furthermore in the case of counter-weight doors an area beside the doors is required to accommodate the counter-weight mechanism and this area can be significant if the door is large. In the case of counter-sprung doors a 25 large coil spring is usually used to counter the weight of the door and is arranged above the opening of the door to apply an upwards counterbalancing force to the door enabling the door to be opened and closed easily. Installing these springs can be dangerous since the spring requires preloading with a force approximately equal to the weight of the door. If the door is large the 5 preloading force can be large which may be dangerous since if an accident occurs during installation serious injury or death can result.
SUMMARY
According to the first aspect of the present invention A door arrangement for a planar vertical opening in a building having a pair of spaced 10 apart upright door posts each extending upwards from a bottom end to a top end an a top cross member, the door arrangement comprising:
a pivot mounting means arranged adjacent the top ends of the upright door posts and having a first axis of rotation parallel to the plane of the opening;
a first door panel connected to the pivot mounting means at the first axis of rotation for movement about said first axis;
a second door panel mounted on the first door panel and foldable relative thereto about a second axis of rotation parallel to said first axis;
and wherein the door is movable between a closed position in 20 which the first and second door panels are substantially coplanar with each other and the door posts, and an open position in which the door extends from the first axis of rotation with the second door panel folded under the first door panel so as to lie directly parallel thereto;
and door opening and closing means comprising:
a pair of spaced apart upright rail members extending upwards from a bottom end to a top end and being arranged adjacent the upright door posts;
a pair of traveler members one being mounted on each respective one of the rail members for movement on said rail member;
pivot connection means for connecting each of the traveler members to the second door panel adjacent a bottom end thereof;
and means for raising and lowering the traveler members on the rail members such that upwards movement of the traveler members causes 10 upwards movement of the bottom end of the second door panel moving the second door panel from the closed position into the open folded position and pivotal movement of the first door panel about the first axis of rotation from the closed position into the open position.
Preferably each traveler member is pivotally connected to the 15 second door panel adjacent a respective bottom corner thereof.
Preferably the door, when in the open position, extends outwards and forwards of the first axis of rotation.
Preferably the means for raising and lowering the traveler members comprise:
an axle mounted on each one of the pair of traveler members, said axle having an axis of rotation substantially perpendicular to the plane of the door posts;
a pair of rotary members mounted on each axle having engagement means for releasably engaging the elongate member;
a first elongate flexible member fixed at a first end to a first one of the pair of upright rail members adjacent the top end thereof and extending therefrom to under a first one of the rotary members on the traveler member mounted on said first rail member and engaging at least a portion of said rotary5 member, said elongate member extending from said first rotary member to a corresponding first rotary member on the traveler member on a second one of the pair of upright rail members engaging over at least a portion of said corresponding first rotary member, said elongate member extending from said corresponding first rotary member to a bottom end fixed to the second one of~0 the pair of upright rail members adjacent the bottom end thereof;
a second elongate flexible member fixed at a first end to the second one of the pair of upright rail members adjacent the top end thereof and extending therefrom to under a second one of the rotary members on the traveler member mounted on said second rail member and engaging at least a 15 portion of said rotary member, said elongate member extending from said second rotary member to a corresponding second rotary member on the traveler member on a first one of the pair of upright rail members engaging overat least a portion of said corresponding second rotary member, said elongate member extending from said corresponding second rotary member to a bottom 20 end fixed to the first one of the pair of upright rail members adjacent the bottom end thereof;
and wherein rotation of at least one axle in a first direction causes the rotary members mounted thereon to rotate such that the first and second elongate flexible members are engaged by the releasable engagement means of 25 the rotary members thus feeding the elongate members through the rotary members of both of the traveler members in a first direction causing both traveler members to move upwards along the rail members;
and wherein rotation of at least one axle in a second direction causes the rotary members mounted thereon to rotate such that the first and second elongate flexible members are engaged by the releasable engagement means of the rotary members thus feeding the elongate members through the rotary members of both of the traveler members in a second direction causing both traveler members to move downwards along the rail members.
Preferably the elongate flexible members are cables or chains or a 10 combination of chain and cable.
Preferably at least one of axle is rotatably driven by an electric motor.
Preferably the pivot mounting means comprises:
a first pair of flange members one being fixed to the top of each of 15 the upright rail members and extending outwards and forwards of the door posts;
a second pair of flange members each being fixed to the first door panel adjacent a top end thereof and extending outwards and forwards of door posts;
and a pair of downwardly extending members each being pivotally connected at a top end to a respective one of the first pair of flange members and being fixed at a bottom end to a respective one of the second pair of flange members.
Preferably there is provided a door biasing means for biasing a top end of the second door panel and a bottom end of the first door panel inwards towards the plane of the door posts.
Preferably the door biasing means comprise a lever member fixed 5 at a first end to the bottom end of the second door panel and extending outwards therefrom to a second end, and a resilient member being fixed adjacent the second end of the lever member extending outwards therefrom to a free end such that said free end engages the supporting surface when the second end is in the closed position thereby applying an upwards force to the 10 second end of the lever member causing the top end of the second door panel and the bottom end of the first door panel to move inwards towards the plane of the door posts.
Preferably the pivot connection means includes a lever arrangement for causing upward movement of the traveller members to bias an 15 upper edge of the second door panel outwardly toward the open position.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is a front elevation view of the door according to the 20 present invention with the door in the close position.
Figure 2 is a rear elevation view of the door according to the present invention with the door in the closed position.
Figure 3 is a side view of the door in the closed position.
Figure 4 is a side elevation view of the door in an intermediate 25 position between the open and closed positions.
Figure 5 is a side elevation view of the door in the open position.
Figure 6 is an enlarged top view of the door opening and closing means.
Figure 7 is an isometric view showing a modified locking system 5 for the lower end of the lower door panel.
DETAILED DESCRIPTION
Referring to Figures 1 and 2 a chain driven overhead door is shown generally at 10. The chain driven door 10 comprises a pair of spaced part upright door posts 12 each extending upwards from a bottom end 14 to a 10 top end 16, a pivot mounting means 18 arranged adjacent the top ends of the door posts 12 and having a first axis of rotation 20 parallel to the plane of the door posts 12, a first door panel 22, a second door panel 24, door opening and closing means 26, and door biasing means 28.
The first door panel 22 is connected to the pivot mounting means 15 18 at the first axis of rotation 20 and is arranged for movement about the first axis 20. The second door panel 24 is mounted on the first door panel 22 by hinge member 30 extending along the bottom edge 32 of the first door panel 22 and a top edge 34 of the second door panel 24. The second door panel 24 is thus mounted such that it is foldable relative to a second axis of rotation 36 20 which lies parallel to the first axis of rotation 20.
Referring to Figures 3, 4, and 5 the door 10 is moveable between an open position 35 and a closed position 37. In the closed position 37 the first and second door panels 22 and 24 are arranged to lie in a vertical plane and substantially co-planar with each other and the door posts 12. When in 25 the open position 35 the door 10 extends from the first axis of rotation 20 forwards and outwards from the door posts 12 with the second door panel 24 folded under the first door panel 22 such that the first and second door panels 22 and 24 lie side by side and substantially parallel to each other.
The door 10 also includes the door opening and closing means 26 5 which move the door 10 between the open position 35 and the closed position 37. Referring to Figures 1, 2, and 3 the door opening and closing means 26 comprise a pair of space to part upright rail members 38, a pair of pivot connection means 40, traveler members 42, and means for raising and lowering the traveler members 44.
The pair of spaced apart upright rail members 38 are positioned rearwards of and adjacent the upright door posts 12 such that the rail members 38 are located within the building. Each upright rail member 38 extends upwards from a bottom end 46 to a top end 48. The top end 48 is arranged at a position above the top of the first door panel 22 and clear of the door post 15 12.
The pivot connection means 40 comprise a first pair of flange members 50 fixed adjacent to the top end 48 of a respective one of the upright rail members 38. Each flange 50 extends outwards and forwards of a respective rail member 38 and door post 12. Each of the first flange members 20 50 also extends slightly rearwards of said respective rail member 38. A second flange member 52 is fixed adjacent each respective top corner of the first door panel 22 and extends outwards and forwards therefrom. A hole 54 is arranged adjacent a front end of each of the first flange members 50 and is arranged such that when the door 10 is in the closed position 37 the hole 54 lies above 25 and is aligned with the second flange 52 on the first door panel 22. The holes 54 on the flange members 50 are aligned with one another and are centered on the first axis of rotation 20. Each downwardly extending member 56 is fixed at a bottom end to a respective one of the second pair of flange members 52 and is pivotally connected at a top end 58 to a respective one of the first pair of 5 flange members 50. The downwardly extending members 56 are arranged such that one extends between each respective first flange member 50 and a corresponding second flange member 56, and is pivotally connected to the first flange member 50 by a pin member 57 extending through the hole 54 and the downwardly extending member 56.
The first door panel 22 and second door panel 24 are sized and arranged such that when in the open position 35 the first door panel 22 and the downwardly extending member 56 have a combined length approximately the same as the length of the second door panel 24.
The pair of traveler members 42 comprise a first traveler member 15 42A and a second traveler member 42B each being mounted on a respective one of the rail members 38A and 38B for movement on said rail members between a position adjacent the bottom end 46 of each rail member 38 and a position adjacent the top end 48 of each rail member 38.
Referring to Figure 6 each traveler member 42 comprises a 20 channel member 41 having a pair of spaced part sides 43 arranged to lie on either side of the rail member 38. A connecting member 45 extending between rearward edges of the side members 43 and is arranged to lie adjacent the rearward face of the rail member 38.
Each traveler member 42 is pivotally connected to the second door 25 panel 24 adjacent a respective bottom corner thereof by pivot connection means. The pivot connection means comprise an elongate member 60 extending substantially perpendicular of the traveler member 42 from a first end62 forwards to a second end 64. Arranged at the bottom corner of the second door panel 24 is a pin member 65 arranged for pivotally engaging through a hole 66 arranged in the second end 64 of the elongate member 60 thereby pivotally connecting the traveler member 42 to the door 10.
The means for raising and lowering the traveler members 42 on the rail members 38 are arranged such that upwards movement of the traveler members 42 causes upwards movement at the bottom end 25 of the second 10 door panel 24 moving the second door panel 24 from the closed position 37 into the open folded position 35 and causing pivotal movement of the first door panel 22 about the first axis of rotation 20 from the closed position 37 into the open position 35.
The means 26 for raising and lowering the traveler members 15 comprise a housing 68 mounted on an inner side wall 43 of the traveler member 42 and extends rewards therefrom. The housing 68 comprises a rear wall 70, a front wall 71, and side walls 72 and 73 arranged such that one of the side walls lies adjacent the inner side wall 43 of the traveler member 42.
The top and bottom of the housing are either wholly open or include openings 20 for receiving first and second elongate flexible members 76 and 78 therethrough. An axle 80 is mounted within the housing 68, and a pair of rotary members 82 and 84 mounted on each axle 80 for engaging the first elongate member 76 and the second elongate flexible member 78.
The axle 80 is mounted in the housing 68 between the front and rear walls 70 and 71 such that it has an axis of rotation 86 extending substantially perpendicular to the plane of the door posts 12. The rotary members 82 and 84 are mounted on the axle 86, are spaced apart thereon, and include engagement means for releasably engaging the elongate flexible members 76 and 78. The engagement means comprise sprocket teeth 88 5 arranged around the periphery of each rotary member 82 and 84.
The traveler members 42 are positioned on the rail members 38 such that they are substantially horizontally aligned with one another with the rotary members 82 and 84 of respective traveler members 42 being aligned with one another.
The first and second elongate flexible members 76 and 78 are roller chains selected such that the chains releasably receive the sprocket teeth 88 of the rotary members 82 and 84.
Referring to Figures 2, 3, 4, and 5 the first elongate flexible member 76 is fixed at a first end 90 to a rearward end of the second flange 15 member 50 on the first one of the pair of upright rail members 38A. The firstelongate flexible member 76 extends from its first end 90 downwards to the first traveler member 42A extending under and engaging the rotary member 72A mounted thereon. The elongate flexible member 76 engages at least a portion of the sprocket teeth 88 of the rotary member 82. The first elongate 20 flexible member 76 then extends from the first rotary member 82A laterally across the width of the door 10 to a corresponding first rotary member 82B on the traveler member 42B mounted on a second one of the pair of upright rail member 38B, and engages over at least a portion of the sprocket teeth 88 of the corresponding first rotary member 82A. The elongate flexible member 76 25 then extends from the corresponding first rotary member 82A to a bottom end 92 which is fixed to the second one of the upright rail members 38B adjacent the bottom end 46 thereof.
The second elongate flexible member 78 is fixed at a first end 94 to a rearward end of the flange member 50 on the second one of the pair of 5 upright rail members 38B. The second elongate flexible member 78 extends from its first end 94 downwards to the second traveler member 42B extending under and engaging the rotary member 74B mounted thereon. The elongate flexible member 78 engages at least a portion of the sprocket teeth 88 of the rotary member 84B. The first elongate flexible member 78 then extends from 10 the second rotary member 84B laterally across the width of the door 10 to a corresponding second rotary member 84A on the traveler member 42A
mounted on a first one of the pair of upright rail member 38A, and engages over at least a portion of the sprocket teeth 88 of the corresponding second rotary member 84A . The elongate flexible member 78 then extends from the 15 corresponding second rotary member 84A to a bottom end 96 which is fixed to the second one of the upright rail members 38B adjacent the bottom end 46 thereof .
Rotation of either one of the axles 86 in a first direction causes both the rotary members 82 and 84 mounted on the traveler members 42 to 20 rotate such that the first and second elongate flexible members 76 and 78 are engaged by the sprocket teeth 88 of the rotary members 82 and 84 thus feeding the elongate members 76 and 78 through the rotary members 82 and 84 of the first traveler member 42A and through the rotary member 82 and 84 of the corresponding traveler member 42B causing both traveler members 42A
and 42B to move upwards relative to the chain members 76 and 78 and along the rail members 38.
Rotation of either one of the axles 86 in the second direction causes both the rotary members 82 and 84 mounted on the traveler members 42 to rotate such that the first and second elongate flexible members 76 and 78 engage the sprocket teeth of the rotary members 82 and 84 thus feeding the elongate members 76 and 78 through the rotary members 82 and 84 of both the traveler members 42 in a second direction causing both the traveler members 42 to move downwards along the rail members 38.
Referring to Figure 6 the door biasing means 28 bias a top end 34 of the second door panel 24 and a bottom end 32 of the first door panel 22 inwards towards the plane of the door posts 12 when the door 10 is in the closed position 37. The door biasing means 28 comprise a lever member 100 fixed at a first end 102 adjacent each respective bottom corner of the second 15 door panel 24. The lever member 100 extends outwards from its first end 102 to a second end 104. A resilient member 106 is fixed adjacent the second end 104 and extends downwards and rearwards therefrom to a free end 108 such that the free end 108 engages the supporting surface 110 when the door 10 is in the closed position thereby applying an upwards force to the second end 20 104 of the lever member 100 and causing the top end 34 of the second door panel 24 and the bottom end 32 of the first door panel 22 to move inwards towards the plane of the door posts 12.
The resilient member 106 is elongate and fixed at a top end 107 to the second end 104 of the lever member 100 and extends downwards and towards the door posts 12 to the free end 108. The lever member includes a CA 02207244 l997-06-06 hole 112 arranged adjacent its first end 102 which receives the pin member 65 of the pivot connections means. This pivotally connects the bottom end of the second door panel 24 to the traveler member 42 allowing the second door panel 24 to pivot between the open position 35 and the closed position 37 as 5 the traveler members 42 move along the rail member 38.
At least one of the axles 86 of the traveler members 42 is rotatably driven by an electric motor 114.
According to an alternative embodiment the elongate flexible members 76 and 78 may be cables and the rotary members 82 and 84 may be 10 drum members arranged such that the rotation of the drum members 82 and 84 will cause the traveler members 42 to move up and down the cable between the top and bottom ends of the rail members 38.
In the second alternative embodiment the pivot mounting means 18, the first and second door panels 22 and 24, and the pivot connection 15 means 26 may be oriented such that the door 10 extends outwards and rearwards from the doors posts 12 as the traveler members 42 move along the rail members 38 between the closed position 37 and the open position 35.
Turning now to Figure 7 there is shown a modified lower end for the lower door panel which provides an arrangement for an improved lifting 20 action of the door from the lower last position.
The lower door panel is indicated at 120 and includes at its lower edge on each side of the door panel, a forwardly facing inverted channel member 121 which is attached to the door panel so as to be rigidly coupled to the door panel and extending from the door panel at right angles. Within the 25 inverted channel member is mounted a plate 122 which extends along the full length of the channel and also extends beyond the rear face of the door to a rearward end 123. A forward end of the plate 122 is attached to the channel by a connection 124 which can be a pivotal link or slot arrangement which allows the plate some degrees of movement relative to the channel.
A lift plate 125 is attached to the lift plate 41 by a pivot pin 126.
The member 41 is mounted part way along the lift plate 125. The lift plate 125 is pivotally connected to the plate 122 by a pivot pin 127 at the rear end 123.
The lift plate 125 is also pivotally connected to one side of the channel 121 bya further pivot pin 128. A locking block 129 is mounted underneath the 10 channel 121 on an adjacent ground surface so as to push up against the plate 122 when the door is in the lowered closed position.
In operation, vertical upward movement of the member 41 acts to lift the lift plate 125 so that it provides upward movement on both the pins 127and 128. The vertical upward movement of the pins 127 causes the plate 122 15 to move upwardly at its rear end which thus forces that rear end upwardly andthe front end of the channel member downwardly thus tending to pivot the lower door panel 120 so that the lower end tends to move rearwardly and the upper end tends to move forwardly thus moving the door panels from a lower locked position into a partly open position. This prevents the door panels from 20 jamming in the locked position when pushed vertically upwardly since the pivotal action avoids any overcenter effect.
In the downward direction, the engagement of the block 129 with the plate 122 tends to pivot the door panel into the closed position.
While one embodiment of the present invention has been 25 described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. The invention is to be considered limited solely by the scope of the appended claims.
FIELD OF THE INVENTION
The present invention relates to an overhead door construction for mounting on a building, in particular of the type utilizing a chain driven opening 5 and closing mechanism.
BACKGROUND
Overhead doors for mounting at a large opening in a building are well-known and a number of arrangements for actuating these doors such as hydraulic actuation, and counter-weight or counter-sprung door actuation are 1 0 available.
Hydraulic actuation generally has the problem that the hydraulic ram used to actuate the door is often arranged such that it applies a force to the building structure thus requiring the building structure to be sufficiently strengthened to accommodate the forces involved which can be relatively large 15 when the door opening is large. As well hydraulic door actuating means include the problem of being somewhat complex and can be costly due to the expense of having to provide a powered hydraulic system.
Counter-weight actuated doors and counter-sprung actuated doors generally require an upwardly curving rail system which extends upwards and 20 into the building and requires that an area equal to the area of the door be available adjacent the ceiling to accommodate the door when in the open position. Furthermore in the case of counter-weight doors an area beside the doors is required to accommodate the counter-weight mechanism and this area can be significant if the door is large. In the case of counter-sprung doors a 25 large coil spring is usually used to counter the weight of the door and is arranged above the opening of the door to apply an upwards counterbalancing force to the door enabling the door to be opened and closed easily. Installing these springs can be dangerous since the spring requires preloading with a force approximately equal to the weight of the door. If the door is large the 5 preloading force can be large which may be dangerous since if an accident occurs during installation serious injury or death can result.
SUMMARY
According to the first aspect of the present invention A door arrangement for a planar vertical opening in a building having a pair of spaced 10 apart upright door posts each extending upwards from a bottom end to a top end an a top cross member, the door arrangement comprising:
a pivot mounting means arranged adjacent the top ends of the upright door posts and having a first axis of rotation parallel to the plane of the opening;
a first door panel connected to the pivot mounting means at the first axis of rotation for movement about said first axis;
a second door panel mounted on the first door panel and foldable relative thereto about a second axis of rotation parallel to said first axis;
and wherein the door is movable between a closed position in 20 which the first and second door panels are substantially coplanar with each other and the door posts, and an open position in which the door extends from the first axis of rotation with the second door panel folded under the first door panel so as to lie directly parallel thereto;
and door opening and closing means comprising:
a pair of spaced apart upright rail members extending upwards from a bottom end to a top end and being arranged adjacent the upright door posts;
a pair of traveler members one being mounted on each respective one of the rail members for movement on said rail member;
pivot connection means for connecting each of the traveler members to the second door panel adjacent a bottom end thereof;
and means for raising and lowering the traveler members on the rail members such that upwards movement of the traveler members causes 10 upwards movement of the bottom end of the second door panel moving the second door panel from the closed position into the open folded position and pivotal movement of the first door panel about the first axis of rotation from the closed position into the open position.
Preferably each traveler member is pivotally connected to the 15 second door panel adjacent a respective bottom corner thereof.
Preferably the door, when in the open position, extends outwards and forwards of the first axis of rotation.
Preferably the means for raising and lowering the traveler members comprise:
an axle mounted on each one of the pair of traveler members, said axle having an axis of rotation substantially perpendicular to the plane of the door posts;
a pair of rotary members mounted on each axle having engagement means for releasably engaging the elongate member;
a first elongate flexible member fixed at a first end to a first one of the pair of upright rail members adjacent the top end thereof and extending therefrom to under a first one of the rotary members on the traveler member mounted on said first rail member and engaging at least a portion of said rotary5 member, said elongate member extending from said first rotary member to a corresponding first rotary member on the traveler member on a second one of the pair of upright rail members engaging over at least a portion of said corresponding first rotary member, said elongate member extending from said corresponding first rotary member to a bottom end fixed to the second one of~0 the pair of upright rail members adjacent the bottom end thereof;
a second elongate flexible member fixed at a first end to the second one of the pair of upright rail members adjacent the top end thereof and extending therefrom to under a second one of the rotary members on the traveler member mounted on said second rail member and engaging at least a 15 portion of said rotary member, said elongate member extending from said second rotary member to a corresponding second rotary member on the traveler member on a first one of the pair of upright rail members engaging overat least a portion of said corresponding second rotary member, said elongate member extending from said corresponding second rotary member to a bottom 20 end fixed to the first one of the pair of upright rail members adjacent the bottom end thereof;
and wherein rotation of at least one axle in a first direction causes the rotary members mounted thereon to rotate such that the first and second elongate flexible members are engaged by the releasable engagement means of 25 the rotary members thus feeding the elongate members through the rotary members of both of the traveler members in a first direction causing both traveler members to move upwards along the rail members;
and wherein rotation of at least one axle in a second direction causes the rotary members mounted thereon to rotate such that the first and second elongate flexible members are engaged by the releasable engagement means of the rotary members thus feeding the elongate members through the rotary members of both of the traveler members in a second direction causing both traveler members to move downwards along the rail members.
Preferably the elongate flexible members are cables or chains or a 10 combination of chain and cable.
Preferably at least one of axle is rotatably driven by an electric motor.
Preferably the pivot mounting means comprises:
a first pair of flange members one being fixed to the top of each of 15 the upright rail members and extending outwards and forwards of the door posts;
a second pair of flange members each being fixed to the first door panel adjacent a top end thereof and extending outwards and forwards of door posts;
and a pair of downwardly extending members each being pivotally connected at a top end to a respective one of the first pair of flange members and being fixed at a bottom end to a respective one of the second pair of flange members.
Preferably there is provided a door biasing means for biasing a top end of the second door panel and a bottom end of the first door panel inwards towards the plane of the door posts.
Preferably the door biasing means comprise a lever member fixed 5 at a first end to the bottom end of the second door panel and extending outwards therefrom to a second end, and a resilient member being fixed adjacent the second end of the lever member extending outwards therefrom to a free end such that said free end engages the supporting surface when the second end is in the closed position thereby applying an upwards force to the 10 second end of the lever member causing the top end of the second door panel and the bottom end of the first door panel to move inwards towards the plane of the door posts.
Preferably the pivot connection means includes a lever arrangement for causing upward movement of the traveller members to bias an 15 upper edge of the second door panel outwardly toward the open position.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is a front elevation view of the door according to the 20 present invention with the door in the close position.
Figure 2 is a rear elevation view of the door according to the present invention with the door in the closed position.
Figure 3 is a side view of the door in the closed position.
Figure 4 is a side elevation view of the door in an intermediate 25 position between the open and closed positions.
Figure 5 is a side elevation view of the door in the open position.
Figure 6 is an enlarged top view of the door opening and closing means.
Figure 7 is an isometric view showing a modified locking system 5 for the lower end of the lower door panel.
DETAILED DESCRIPTION
Referring to Figures 1 and 2 a chain driven overhead door is shown generally at 10. The chain driven door 10 comprises a pair of spaced part upright door posts 12 each extending upwards from a bottom end 14 to a 10 top end 16, a pivot mounting means 18 arranged adjacent the top ends of the door posts 12 and having a first axis of rotation 20 parallel to the plane of the door posts 12, a first door panel 22, a second door panel 24, door opening and closing means 26, and door biasing means 28.
The first door panel 22 is connected to the pivot mounting means 15 18 at the first axis of rotation 20 and is arranged for movement about the first axis 20. The second door panel 24 is mounted on the first door panel 22 by hinge member 30 extending along the bottom edge 32 of the first door panel 22 and a top edge 34 of the second door panel 24. The second door panel 24 is thus mounted such that it is foldable relative to a second axis of rotation 36 20 which lies parallel to the first axis of rotation 20.
Referring to Figures 3, 4, and 5 the door 10 is moveable between an open position 35 and a closed position 37. In the closed position 37 the first and second door panels 22 and 24 are arranged to lie in a vertical plane and substantially co-planar with each other and the door posts 12. When in 25 the open position 35 the door 10 extends from the first axis of rotation 20 forwards and outwards from the door posts 12 with the second door panel 24 folded under the first door panel 22 such that the first and second door panels 22 and 24 lie side by side and substantially parallel to each other.
The door 10 also includes the door opening and closing means 26 5 which move the door 10 between the open position 35 and the closed position 37. Referring to Figures 1, 2, and 3 the door opening and closing means 26 comprise a pair of space to part upright rail members 38, a pair of pivot connection means 40, traveler members 42, and means for raising and lowering the traveler members 44.
The pair of spaced apart upright rail members 38 are positioned rearwards of and adjacent the upright door posts 12 such that the rail members 38 are located within the building. Each upright rail member 38 extends upwards from a bottom end 46 to a top end 48. The top end 48 is arranged at a position above the top of the first door panel 22 and clear of the door post 15 12.
The pivot connection means 40 comprise a first pair of flange members 50 fixed adjacent to the top end 48 of a respective one of the upright rail members 38. Each flange 50 extends outwards and forwards of a respective rail member 38 and door post 12. Each of the first flange members 20 50 also extends slightly rearwards of said respective rail member 38. A second flange member 52 is fixed adjacent each respective top corner of the first door panel 22 and extends outwards and forwards therefrom. A hole 54 is arranged adjacent a front end of each of the first flange members 50 and is arranged such that when the door 10 is in the closed position 37 the hole 54 lies above 25 and is aligned with the second flange 52 on the first door panel 22. The holes 54 on the flange members 50 are aligned with one another and are centered on the first axis of rotation 20. Each downwardly extending member 56 is fixed at a bottom end to a respective one of the second pair of flange members 52 and is pivotally connected at a top end 58 to a respective one of the first pair of 5 flange members 50. The downwardly extending members 56 are arranged such that one extends between each respective first flange member 50 and a corresponding second flange member 56, and is pivotally connected to the first flange member 50 by a pin member 57 extending through the hole 54 and the downwardly extending member 56.
The first door panel 22 and second door panel 24 are sized and arranged such that when in the open position 35 the first door panel 22 and the downwardly extending member 56 have a combined length approximately the same as the length of the second door panel 24.
The pair of traveler members 42 comprise a first traveler member 15 42A and a second traveler member 42B each being mounted on a respective one of the rail members 38A and 38B for movement on said rail members between a position adjacent the bottom end 46 of each rail member 38 and a position adjacent the top end 48 of each rail member 38.
Referring to Figure 6 each traveler member 42 comprises a 20 channel member 41 having a pair of spaced part sides 43 arranged to lie on either side of the rail member 38. A connecting member 45 extending between rearward edges of the side members 43 and is arranged to lie adjacent the rearward face of the rail member 38.
Each traveler member 42 is pivotally connected to the second door 25 panel 24 adjacent a respective bottom corner thereof by pivot connection means. The pivot connection means comprise an elongate member 60 extending substantially perpendicular of the traveler member 42 from a first end62 forwards to a second end 64. Arranged at the bottom corner of the second door panel 24 is a pin member 65 arranged for pivotally engaging through a hole 66 arranged in the second end 64 of the elongate member 60 thereby pivotally connecting the traveler member 42 to the door 10.
The means for raising and lowering the traveler members 42 on the rail members 38 are arranged such that upwards movement of the traveler members 42 causes upwards movement at the bottom end 25 of the second 10 door panel 24 moving the second door panel 24 from the closed position 37 into the open folded position 35 and causing pivotal movement of the first door panel 22 about the first axis of rotation 20 from the closed position 37 into the open position 35.
The means 26 for raising and lowering the traveler members 15 comprise a housing 68 mounted on an inner side wall 43 of the traveler member 42 and extends rewards therefrom. The housing 68 comprises a rear wall 70, a front wall 71, and side walls 72 and 73 arranged such that one of the side walls lies adjacent the inner side wall 43 of the traveler member 42.
The top and bottom of the housing are either wholly open or include openings 20 for receiving first and second elongate flexible members 76 and 78 therethrough. An axle 80 is mounted within the housing 68, and a pair of rotary members 82 and 84 mounted on each axle 80 for engaging the first elongate member 76 and the second elongate flexible member 78.
The axle 80 is mounted in the housing 68 between the front and rear walls 70 and 71 such that it has an axis of rotation 86 extending substantially perpendicular to the plane of the door posts 12. The rotary members 82 and 84 are mounted on the axle 86, are spaced apart thereon, and include engagement means for releasably engaging the elongate flexible members 76 and 78. The engagement means comprise sprocket teeth 88 5 arranged around the periphery of each rotary member 82 and 84.
The traveler members 42 are positioned on the rail members 38 such that they are substantially horizontally aligned with one another with the rotary members 82 and 84 of respective traveler members 42 being aligned with one another.
The first and second elongate flexible members 76 and 78 are roller chains selected such that the chains releasably receive the sprocket teeth 88 of the rotary members 82 and 84.
Referring to Figures 2, 3, 4, and 5 the first elongate flexible member 76 is fixed at a first end 90 to a rearward end of the second flange 15 member 50 on the first one of the pair of upright rail members 38A. The firstelongate flexible member 76 extends from its first end 90 downwards to the first traveler member 42A extending under and engaging the rotary member 72A mounted thereon. The elongate flexible member 76 engages at least a portion of the sprocket teeth 88 of the rotary member 82. The first elongate 20 flexible member 76 then extends from the first rotary member 82A laterally across the width of the door 10 to a corresponding first rotary member 82B on the traveler member 42B mounted on a second one of the pair of upright rail member 38B, and engages over at least a portion of the sprocket teeth 88 of the corresponding first rotary member 82A. The elongate flexible member 76 25 then extends from the corresponding first rotary member 82A to a bottom end 92 which is fixed to the second one of the upright rail members 38B adjacent the bottom end 46 thereof.
The second elongate flexible member 78 is fixed at a first end 94 to a rearward end of the flange member 50 on the second one of the pair of 5 upright rail members 38B. The second elongate flexible member 78 extends from its first end 94 downwards to the second traveler member 42B extending under and engaging the rotary member 74B mounted thereon. The elongate flexible member 78 engages at least a portion of the sprocket teeth 88 of the rotary member 84B. The first elongate flexible member 78 then extends from 10 the second rotary member 84B laterally across the width of the door 10 to a corresponding second rotary member 84A on the traveler member 42A
mounted on a first one of the pair of upright rail member 38A, and engages over at least a portion of the sprocket teeth 88 of the corresponding second rotary member 84A . The elongate flexible member 78 then extends from the 15 corresponding second rotary member 84A to a bottom end 96 which is fixed to the second one of the upright rail members 38B adjacent the bottom end 46 thereof .
Rotation of either one of the axles 86 in a first direction causes both the rotary members 82 and 84 mounted on the traveler members 42 to 20 rotate such that the first and second elongate flexible members 76 and 78 are engaged by the sprocket teeth 88 of the rotary members 82 and 84 thus feeding the elongate members 76 and 78 through the rotary members 82 and 84 of the first traveler member 42A and through the rotary member 82 and 84 of the corresponding traveler member 42B causing both traveler members 42A
and 42B to move upwards relative to the chain members 76 and 78 and along the rail members 38.
Rotation of either one of the axles 86 in the second direction causes both the rotary members 82 and 84 mounted on the traveler members 42 to rotate such that the first and second elongate flexible members 76 and 78 engage the sprocket teeth of the rotary members 82 and 84 thus feeding the elongate members 76 and 78 through the rotary members 82 and 84 of both the traveler members 42 in a second direction causing both the traveler members 42 to move downwards along the rail members 38.
Referring to Figure 6 the door biasing means 28 bias a top end 34 of the second door panel 24 and a bottom end 32 of the first door panel 22 inwards towards the plane of the door posts 12 when the door 10 is in the closed position 37. The door biasing means 28 comprise a lever member 100 fixed at a first end 102 adjacent each respective bottom corner of the second 15 door panel 24. The lever member 100 extends outwards from its first end 102 to a second end 104. A resilient member 106 is fixed adjacent the second end 104 and extends downwards and rearwards therefrom to a free end 108 such that the free end 108 engages the supporting surface 110 when the door 10 is in the closed position thereby applying an upwards force to the second end 20 104 of the lever member 100 and causing the top end 34 of the second door panel 24 and the bottom end 32 of the first door panel 22 to move inwards towards the plane of the door posts 12.
The resilient member 106 is elongate and fixed at a top end 107 to the second end 104 of the lever member 100 and extends downwards and towards the door posts 12 to the free end 108. The lever member includes a CA 02207244 l997-06-06 hole 112 arranged adjacent its first end 102 which receives the pin member 65 of the pivot connections means. This pivotally connects the bottom end of the second door panel 24 to the traveler member 42 allowing the second door panel 24 to pivot between the open position 35 and the closed position 37 as 5 the traveler members 42 move along the rail member 38.
At least one of the axles 86 of the traveler members 42 is rotatably driven by an electric motor 114.
According to an alternative embodiment the elongate flexible members 76 and 78 may be cables and the rotary members 82 and 84 may be 10 drum members arranged such that the rotation of the drum members 82 and 84 will cause the traveler members 42 to move up and down the cable between the top and bottom ends of the rail members 38.
In the second alternative embodiment the pivot mounting means 18, the first and second door panels 22 and 24, and the pivot connection 15 means 26 may be oriented such that the door 10 extends outwards and rearwards from the doors posts 12 as the traveler members 42 move along the rail members 38 between the closed position 37 and the open position 35.
Turning now to Figure 7 there is shown a modified lower end for the lower door panel which provides an arrangement for an improved lifting 20 action of the door from the lower last position.
The lower door panel is indicated at 120 and includes at its lower edge on each side of the door panel, a forwardly facing inverted channel member 121 which is attached to the door panel so as to be rigidly coupled to the door panel and extending from the door panel at right angles. Within the 25 inverted channel member is mounted a plate 122 which extends along the full length of the channel and also extends beyond the rear face of the door to a rearward end 123. A forward end of the plate 122 is attached to the channel by a connection 124 which can be a pivotal link or slot arrangement which allows the plate some degrees of movement relative to the channel.
A lift plate 125 is attached to the lift plate 41 by a pivot pin 126.
The member 41 is mounted part way along the lift plate 125. The lift plate 125 is pivotally connected to the plate 122 by a pivot pin 127 at the rear end 123.
The lift plate 125 is also pivotally connected to one side of the channel 121 bya further pivot pin 128. A locking block 129 is mounted underneath the 10 channel 121 on an adjacent ground surface so as to push up against the plate 122 when the door is in the lowered closed position.
In operation, vertical upward movement of the member 41 acts to lift the lift plate 125 so that it provides upward movement on both the pins 127and 128. The vertical upward movement of the pins 127 causes the plate 122 15 to move upwardly at its rear end which thus forces that rear end upwardly andthe front end of the channel member downwardly thus tending to pivot the lower door panel 120 so that the lower end tends to move rearwardly and the upper end tends to move forwardly thus moving the door panels from a lower locked position into a partly open position. This prevents the door panels from 20 jamming in the locked position when pushed vertically upwardly since the pivotal action avoids any overcenter effect.
In the downward direction, the engagement of the block 129 with the plate 122 tends to pivot the door panel into the closed position.
While one embodiment of the present invention has been 25 described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. The invention is to be considered limited solely by the scope of the appended claims.
Claims (20)
1. A door arrangement for a planar vertical opening in a building having a pair of spaced apart upright door posts each extending upwards from a bottom end to a top end an a top cross member, the door arrangement comprising:
a pivot mounting means arranged adjacent the top ends of the upright door posts and having a first axis of rotation parallel to the plane of the opening;
a first door panel connected to the pivot mounting means at the first axis of rotation for movement about said first axis;
a second door panel mounted on the first door panel and foldable relative thereto about a second axis of rotation parallel to said first axis;
and wherein the door is movable between a closed position in which the first and second door panels are substantially coplanar with each other and the door posts, and an open position in which the door extends from the first axis of rotation with the second door panel folded under the first door panel so as to lie directly parallel thereto;
and door opening and closing means comprising:
a pair of spaced apart upright rail members extending upwards from a bottom end to a top end and being arranged adjacent the upright door posts;
a pair of traveler members one being mounted on each respective one of the rail members for movement on said rail member;
pivot connection means for connecting each of the traveler members to the second door panel adjacent a bottom end thereof;
and means for raising and lowering the traveler members on the rail members such that upwards movement of the traveler members causes upwards movement of the bottom end of the second door panel moving the second door panel from the closed position into the open folded position and pivotal movement of the first door panel about the first axis of rotation from the closed position into the open position.
a pivot mounting means arranged adjacent the top ends of the upright door posts and having a first axis of rotation parallel to the plane of the opening;
a first door panel connected to the pivot mounting means at the first axis of rotation for movement about said first axis;
a second door panel mounted on the first door panel and foldable relative thereto about a second axis of rotation parallel to said first axis;
and wherein the door is movable between a closed position in which the first and second door panels are substantially coplanar with each other and the door posts, and an open position in which the door extends from the first axis of rotation with the second door panel folded under the first door panel so as to lie directly parallel thereto;
and door opening and closing means comprising:
a pair of spaced apart upright rail members extending upwards from a bottom end to a top end and being arranged adjacent the upright door posts;
a pair of traveler members one being mounted on each respective one of the rail members for movement on said rail member;
pivot connection means for connecting each of the traveler members to the second door panel adjacent a bottom end thereof;
and means for raising and lowering the traveler members on the rail members such that upwards movement of the traveler members causes upwards movement of the bottom end of the second door panel moving the second door panel from the closed position into the open folded position and pivotal movement of the first door panel about the first axis of rotation from the closed position into the open position.
2. A door according to Claim 1 wherein each traveler member is pivotally connected to the second door panel adjacent a respective bottom corner thereof.
3. A door according to Claim 1 wherein the door, when in the open position, extends outwards and forwards of the first axis of rotation.
4. A door according to Claim 1 wherein the means for raising and lowering the traveler members comprise:
an axle mounted on each one of the pair of traveler members, said axle having an axis of rotation substantially perpendicular to the plane of the door posts;
a pair of rotary members mounted on each axle having engagement means for releasably engaging the elongate member;
a first elongate flexible member fixed at a first end to a first one of the pair of upright rail members adjacent the top end thereof and extending therefrom to under a first one of the rotary members on the traveler member mounted on said first rail member and engaging at least a portion of said rotarymember, said elongate member extending from said first rotary member to a corresponding first rotary member on the traveler member on a second one of the pair of upright rail members engaging over at least a portion of said corresponding first rotary member, said elongate member extending from said corresponding first rotary member to a bottom end fixed to the second one of the pair of upright rail members adjacent the bottom end thereof;
a second elongate flexible member fixed at a first end to the second one of the pair of upright rail members adjacent the top end thereof and extending therefrom to under a second one of the rotary members on the traveler member mounted on said second rail member and engaging at least a portion of said rotary member, said elongate member extending from said second rotary member to a corresponding second rotary member on the traveler member on a first one of the pair of upright rail members engaging overat least a portion of said corresponding second rotary member, said elongate member extending from said corresponding second rotary member to a bottom end fixed to the first one of the pair of upright rail members adjacent the bottom end thereof;
and wherein rotation of at least one axle in a first direction causes the rotary members mounted thereon to rotate such that the first and second elongate flexible members are engaged by the releasable engagement means of the rotary members thus feeding the elongate members through the rotary members of both of the traveler members in a first direction causing both traveler members to move upwards along the rail members;
and wherein rotation of at least one axle in a second direction causes the rotary members mounted thereon to rotate such that the first and second elongate flexible members are engaged by the releasable engagement means of the rotary members thus feeding the elongate members through the rotary members of both of the traveler members in a second direction causing both traveler members to move downwards along the rail members.
an axle mounted on each one of the pair of traveler members, said axle having an axis of rotation substantially perpendicular to the plane of the door posts;
a pair of rotary members mounted on each axle having engagement means for releasably engaging the elongate member;
a first elongate flexible member fixed at a first end to a first one of the pair of upright rail members adjacent the top end thereof and extending therefrom to under a first one of the rotary members on the traveler member mounted on said first rail member and engaging at least a portion of said rotarymember, said elongate member extending from said first rotary member to a corresponding first rotary member on the traveler member on a second one of the pair of upright rail members engaging over at least a portion of said corresponding first rotary member, said elongate member extending from said corresponding first rotary member to a bottom end fixed to the second one of the pair of upright rail members adjacent the bottom end thereof;
a second elongate flexible member fixed at a first end to the second one of the pair of upright rail members adjacent the top end thereof and extending therefrom to under a second one of the rotary members on the traveler member mounted on said second rail member and engaging at least a portion of said rotary member, said elongate member extending from said second rotary member to a corresponding second rotary member on the traveler member on a first one of the pair of upright rail members engaging overat least a portion of said corresponding second rotary member, said elongate member extending from said corresponding second rotary member to a bottom end fixed to the first one of the pair of upright rail members adjacent the bottom end thereof;
and wherein rotation of at least one axle in a first direction causes the rotary members mounted thereon to rotate such that the first and second elongate flexible members are engaged by the releasable engagement means of the rotary members thus feeding the elongate members through the rotary members of both of the traveler members in a first direction causing both traveler members to move upwards along the rail members;
and wherein rotation of at least one axle in a second direction causes the rotary members mounted thereon to rotate such that the first and second elongate flexible members are engaged by the releasable engagement means of the rotary members thus feeding the elongate members through the rotary members of both of the traveler members in a second direction causing both traveler members to move downwards along the rail members.
5. A door according to Claim 4 wherein the rotary members are sprockets.
6. A door according to Claim 4 wherein the rotary members are drums.
7. A door according to Claim 4 wherein the elongate flexible members are chains.
8. A door according to Claim 4 wherein the elongate flexible members are cables.
9. A door according to Claim 4 wherein at least one of axle is rotatably driven by an electric motor.
10. A door according to Claim 1 wherein the pivot mounting means comprises:
a first pair of flange members one being fixed to the top of each of the upright rail members and extending outwards and forwards of the door posts;
a second pair of flange members each being fixed to the first door panel adjacent a top end thereof and extending outwards and forwards of door posts;
and a pair of downwardly extending members each being pivotally connected at a top end to a respective one of the first pair of flange members and being fixed at a bottom end to a respective one of the second pair of flange members.
a first pair of flange members one being fixed to the top of each of the upright rail members and extending outwards and forwards of the door posts;
a second pair of flange members each being fixed to the first door panel adjacent a top end thereof and extending outwards and forwards of door posts;
and a pair of downwardly extending members each being pivotally connected at a top end to a respective one of the first pair of flange members and being fixed at a bottom end to a respective one of the second pair of flange members.
11. A door according to Claim 1 wherein there is provided a door biasing means for biasing a top end of the second door panel and a bottom end of the first door panel inwards towards the plane of the door posts.
12. A door according to Claim 11 wherein the door biasing means comprise a lever member fixed at a first end to the bottom end of the second door panel and extending outwards therefrom to a second end, and a resilient member being fixed adjacent the second end of the lever member extending outwards therefrom to a free end such that said free end engages the supporting surface when the second end is in the closed position thereby applying an upwards force to the second end of the lever member causing the top end of the second door panel and the bottom end of the first door panel to move inwards towards the plane of the door posts.
13. A door according to Claim 1 wherein the pivot connection means includes a lever arrangement for causing upward movement of the traveller members to bias an upper edge of the second door panel outwardly toward the open position.
14. A door according to Claim 11 wherein the lever arrangement comprises a first lever pivotally attached at one end to the second door panel and attached to the traveller member at an intermediate position and a second lever pivotally attached to the first lever at a second end of the first lever and attached to the second door panel at the opposite end of the second lever in a manner arranged to bias the second door panel.
15. A door arrangement for a planar vertical opening in a building having a pair of spaced apart upright door posts each extending upwards from a bottom end to a top end an a top cross member, the door arrangement comprising:
a pivot mounting means arranged adjacent the top ends of the upright door posts and having a first axis of rotation parallel to the plane of the door;
a first door panel connected to the pivot mounting means at the first axis of rotation for movement about said first axis;
a second door panel mounted on the first door panel and foldable relative thereto about a second axis of rotation parallel to said first axis;
and wherein the door is movable between a closed position in which the first and second door panels lie in the same plane and are substantially coplanar with the door posts, and an open position in which the door extends outwardly from the first axis of rotation with the second door panel folded under the first door panel so as to lie directly parallel thereto;
means for opening and closing the door;
and a door biasing means for biasing a top end of the second door panel and a bottom end of the first door panel inwards towards the plane of the door posts.
a pivot mounting means arranged adjacent the top ends of the upright door posts and having a first axis of rotation parallel to the plane of the door;
a first door panel connected to the pivot mounting means at the first axis of rotation for movement about said first axis;
a second door panel mounted on the first door panel and foldable relative thereto about a second axis of rotation parallel to said first axis;
and wherein the door is movable between a closed position in which the first and second door panels lie in the same plane and are substantially coplanar with the door posts, and an open position in which the door extends outwardly from the first axis of rotation with the second door panel folded under the first door panel so as to lie directly parallel thereto;
means for opening and closing the door;
and a door biasing means for biasing a top end of the second door panel and a bottom end of the first door panel inwards towards the plane of the door posts.
16. A door according to Claim 15 wherein the door biasing means comprise a lever member fixed at a first end to the bottom end of the second door panel and extending outwards therefrom to a second end, and a resilient member being fixed adjacent the second end of the lever member extending outwards therefrom to a free end such that said free end engages the supporting surface when the second end is in the closed position thereby applying an upwards force to the second end of the lever member causing the top end of the second door panel and the bottom end of the first door panel to move inwards towards the plane of the door posts.
17. A door according to Claim 16 wherein the resilient member is elongate and fixed at a top an end to the second end of the lever member and extends downwards and towards the door posts to the free end.
18. A door according to Claim 15 wherein the door opening and closing means comprise:
a pair of spaced apart upright rail members extending upwards from a bottom end to a top end and being arranged rearwards of and adjacent the upright door posts;
a pair of traveler members one being mounted on each respective one of the rail members for movement on said rail member;
pivot connection means for connecting each of the traveler members to the second door panel adjacent a bottom end thereof;
and means for raising and lowering the traveler members on the rail members such that upwards movement of the traveler members causes upwards movement of the bottom end of the second door panel moving the second door panel from the closed position into the open folded position and pivotal movement of the first door panel about the first axis of rotation from the closed position into the open position.
a pair of spaced apart upright rail members extending upwards from a bottom end to a top end and being arranged rearwards of and adjacent the upright door posts;
a pair of traveler members one being mounted on each respective one of the rail members for movement on said rail member;
pivot connection means for connecting each of the traveler members to the second door panel adjacent a bottom end thereof;
and means for raising and lowering the traveler members on the rail members such that upwards movement of the traveler members causes upwards movement of the bottom end of the second door panel moving the second door panel from the closed position into the open folded position and pivotal movement of the first door panel about the first axis of rotation from the closed position into the open position.
19. A door according to Claim 15 wherein the pivot connection means includes a lever arrangement for causing upward movement of the traveller members to bias an upper edge of the second door panel outwardly toward the open position.
20. A door according to Claim 15 wherein the lever arrangement comprises a first lever pivotally attached at one end to the second door panel and attached to the traveller member at an intermediate position and a second lever pivotally attached to the first lever at a second end of the first lever and attached to the second door panel at the opposite end of the second lever in a manner arranged to bias the second door panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2207244 CA2207244A1 (en) | 1997-06-06 | 1997-06-06 | Chain driven door with lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2207244 CA2207244A1 (en) | 1997-06-06 | 1997-06-06 | Chain driven door with lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2207244A1 true CA2207244A1 (en) | 1998-12-06 |
Family
ID=4160848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2207244 Abandoned CA2207244A1 (en) | 1997-06-06 | 1997-06-06 | Chain driven door with lock |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2207244A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415671A (en) * | 2011-04-29 | 2013-11-27 | 尤利乌斯·布卢姆有限公司 | Furniture item having a furniture body and a folding flap |
| CN114468846A (en) * | 2020-10-28 | 2022-05-13 | 青岛海尔滚筒洗衣机有限公司 | Charging station of sweeping robot, sweeping robot and combined cleaning system |
-
1997
- 1997-06-06 CA CA 2207244 patent/CA2207244A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415671A (en) * | 2011-04-29 | 2013-11-27 | 尤利乌斯·布卢姆有限公司 | Furniture item having a furniture body and a folding flap |
| CN103415671B (en) * | 2011-04-29 | 2015-12-23 | 尤利乌斯·布卢姆有限公司 | There is the furniture of furniture cabinet and folding cover plate |
| CN114468846A (en) * | 2020-10-28 | 2022-05-13 | 青岛海尔滚筒洗衣机有限公司 | Charging station of sweeping robot, sweeping robot and combined cleaning system |
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