WO2008001093A1 - Chaise - Google Patents

Chaise Download PDF

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Publication number
WO2008001093A1
WO2008001093A1 PCT/GB2007/002417 GB2007002417W WO2008001093A1 WO 2008001093 A1 WO2008001093 A1 WO 2008001093A1 GB 2007002417 W GB2007002417 W GB 2007002417W WO 2008001093 A1 WO2008001093 A1 WO 2008001093A1
Authority
WO
WIPO (PCT)
Prior art keywords
chair
chair according
rod
recess
backrest
Prior art date
Application number
PCT/GB2007/002417
Other languages
English (en)
Inventor
Colin Tiffany
Original Assignee
Colin Tiffany
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Colin Tiffany filed Critical Colin Tiffany
Priority to GB0901130A priority Critical patent/GB2453299A/en
Publication of WO2008001093A1 publication Critical patent/WO2008001093A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/14—Beach chairs ; Chairs for outdoor use, e.g. chairs for relaxation or sun-tanning
    • A47C1/143—Chaise lounges
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/028—Reclining or easy chairs having independently-adjustable supporting parts for changing a straight chair into an easy chair, e.g. by inverting or tilting seat and back-rest in the base frame or by overturning the whole chair
    • A47C1/029—Reclining or easy chairs having independently-adjustable supporting parts for changing a straight chair into an easy chair, e.g. by inverting or tilting seat and back-rest in the base frame or by overturning the whole chair by changing the length or the inclination of the legs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03233—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of a rack-and-pinion or like gearing mechanism
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/14—Beach chairs ; Chairs for outdoor use, e.g. chairs for relaxation or sun-tanning

Definitions

  • the present invention relates generally to seating apparatus and more specifically to a chair that is arranged and configured to accommodate a user in a variety of orientations.
  • Reclining chairs are known in the art, most incorporating some form of mechanism that allows the backrest to pivot about a lower section to some degree relative to the vertical, so that a user can sit upright or lie down, at least to an extent.
  • An example of such a chair would be a conventional sun lounger.
  • a reclining chair could provide a useful alternative to the requirement for a bed and a chair individually, in a place where floor space is either cost prohibitive or simply an issue. Examples of such places are inner city hotels, oil rigs or space craft.
  • the chair would need to be comfortable and the backrest capable of being manipulated between a horizontal position for enabling a user to comfortably sleep thereon and an upright position to enable the chair to be used, for example, for dining at a table, or simply for relaxing and watching the television.
  • a chair having a seat mounted on support means to provide a load bearing surface above the ground and a backrest pivotally mounted relative to a distal end of said seat for movement between a first configuration in which said backrest is upright relative to said seat and a second configuration in which said back rest is substantially horizontal relative to the ground, the chair further comprising a reclining mechanism for raising and lowering said seat relative to said support means such that, in said first configuration, said load bearing surface is higher relative to the ground than in said second configuration.
  • the chair comprising a mechanism comprising a number of parts that move in relation to one other, such that when the back portion is lowered towards a horizontal position, the area where a user sits will drop towards the floor and when the back is raised towards a vertical position the seating area is raised up from the floor.
  • said support means comprises a leg portion and an arm portion, each having upper and lower ends, with said lower ends either directly or indirectly contacting the ground, said upper end of said leg portion being able to follow the contours of said arm portion within a fixed limit and said upper end of said arm portion being rotatably attached to said back portion.
  • said reclining mechanism comprises at least one toothed portion in or on said backrest and at least one sprocket rotatably mounted on said leg portion, such that said toothed portion of said backrest contacts and is supported by said sprocket and rotation of said sprocket causes said back rest to pivot about said upper end of said arm rest.
  • Said at least one toothed portion in or on said back rest is beneficially longitudinally arcuate.
  • a roller is rotatably mounted at an upper end of said leg portion such that said upper end of said leg portion is able to follow the contours of said arm portion within a fixed limit, said roller being forced against said contours of said arm portion by way of means for generating an opposing force being provided between an upper portion of said arm portion and a lower end of said back portion.
  • Said means for providing an opposing force preferably comprises at least one gas spring. Benef ⁇ cially, said seat is anchored to said support means at a lower end, anchored to a lower end of said backrest at a generally mid point and anchored to an upper end of said backrest at a higher end thereof.
  • said at least one sprocket is kinetically restricted in at least one direction of rotation by restricting means and said restricting means is beneficially a pawl and/or a motor, said motor enabling said sprocket to be driven in at least one direction.
  • said reclining mechanism may comprise at least one recess in or on said support means and a rod mounted in or on said support means, said at least one recess being arranged and configured to receive a portion of said rod, such that said recess contacts and is supported by said rod when said chair is said second configuration.
  • said support means comprises a leg portion and an arm portion, each having upper and lower ends, said lower ends directly or indirectly contacting the ground, said upper end of said leg portion being able to follow the contours of said arm portion within a fixed limit and said upper end of said arm portion being rotatably attached to said back portion.
  • the reclining mechanism preferably comprises at least one recess in or on said backrest and a rod mounted in or on said leg portion, said at least one recess being arranged and configured to receive a portion of said rod, such that said recess contacts and is supported by said rod.
  • said reclining mechanism comprises at least two recesses disposed sequentially in or on said backrest, each of said recesses independently being arranged and configured to receive and support said rod, each said recess fixing said chair in an exclusive configuration.
  • the rod-contacting part of said sequence of recesses follow a longitudinally arcuate path.
  • a channel is provided from one side of at least one recess to the other, said channel being configured to allow passage of a portion of said rod there through so as to enable movement of said chair between said first to said second configuration.
  • the channel is beneficially provided on a generally opposite side of said at least one recess to that side which is configured to receive said rod.
  • the at least one recess and said channel are preferably formed in said backrest.
  • at least one recess is preferably formed in an adjustment element and beneficially the adjustment element is held a fixed distance from said backrest by a bridging portion, wherein the distance between said adjustment element and said backrest defines said channel.
  • a roller is rotatably mounted at an upper end of said leg portion such that said upper end of said leg portion is able to follow the contours of said arm portion within a fixed limit, said roller being forced against said contours of said arm portion by way of said reclining mechanism.
  • said seat comprises a seating platform anchored to said support means and said seat preferably comprises a seating platform anchored at a first end to an upper part of said leg portion and anchored at a second end to a lower part of said back portion.
  • Figure 1 is a simplified schematic representation of a chair according to an exemplary embodiment of the present invention
  • Figure 2a is a schematic partial representation of the back portion of the chair from
  • Figure 1 shown as the chair is moving towards its upright position;
  • Figure 2b is a schematic partial representation of the back portion of the chair from
  • Figure 1 shown as the chair is moving towards its horizontal position
  • Figure 3 a is a schematic representation of the arm portion of the chair from Figure 1 , shown as the chair is moving towards its upright position;
  • Figure 3b is a schematic representation of the arm portion of the chair from Figure 1 , shown as the chair is moving towards its horizontal position;
  • Figure 4a is a schematic representation of the leg portion of the chair from Figure 1 , shown as the chair is moving towards its upright position
  • Figure 4b is a schematic representation of the arm portion of the chair from Figure 1 , shown as the chair is moving towards its horizontal position
  • Figure 5 is a perspective schematic representation of the chair from Figure 1, indicating seat cover detail
  • Figure 6 is a sequence of schematic representations of the chair from Figure 1, as it is manipulated in use from an initial upright position to a horizontal sleeping position
  • Figure 7 is a schematic representation the chair from Figure 1 , demonstrating the height variation between vertical and horizontal positions
  • Figure 8a is a schematic representation of a chair according to a second exemplary embodiment of the present invention in a generally horizontal position
  • Figure 8b is a schematic representation of a chair according to a second exemplary embodiment of the present invention in a generally upright position
  • Figure 9a is a partial schematic representation of protrusion portion, bridging portion and back portion of a chair according to a second exemplary embodiment of the present invention in a generally horizontal
  • Figure 11 is a partial schematic representation of protrusion portion, channel and back portion of a chair according to a second exemplary embodiment of the present invention.
  • Figure 12a is a simplified line drawing of a chair according to a second exemplary embodiment of the present invention, shown in a generally horizontal position
  • Figure 12b is a simplified line drawing of a chair according to a second exemplary embodiment of the present invention, shown in between a generally horizontal position and generally upright position;
  • Figure 12c is a simplified line drawing of a chair according to a second exemplary embodiment of the present invention, shown in a generally upright position;
  • Figure 13 is a partial schematic representation of protrusion portion, channel
  • a chair 10 is shown, according to an exemplary embodiment of the present invention, comprising three main parts: (a corresponding set of two of each of) an arm portion 12; a back portion 30; and a leg portion 40.
  • each pair shall be referred to in the singular and each pair may have the same components and interactions on their respective sides (i.e. are mirrored about a vertical plane between each pair, bisecting the chair from front to back).
  • the purpose of Figure 1 is to demonstrate the interaction of the main parts of the chair 10, leaving the specifics of each portion 12, 30, 40 to be described in detail with reference to Figures 2a to 4b.
  • each portion 12, 30, 40 there are three points of substantially constant contact A, B, C between the three portions 12, 30, 40 as a group, with each portion (e.g 12) having one point of contacts, B with each of the other two portions (i.e. 30, 40).
  • point of contacts connects the arm portion 12 to the back portion 30 and enables one (or both) to rotate relative to the other, about a substantially horizontal axis.
  • point A is facilitated by way of two plate members 14 placed in a vertical plane and being fixed either side of (and to) the back portion 30.
  • the two members 14 have an axle therebetween that intersects and retains the ami portion 12. It will be apparent to a person skilled in the art that by this arrangement, both portions 12, 30 may rotate about their common axis, in the same plane.
  • Point of contact B is made by way of roller means 44 that is rotatably mounted towards the front end of the leg portion 40.
  • the roller means 44 interacts with the front edge of the arm portion 12, due to an opposing force generated by means provided between the arm portion 12 and a lower extremity of the back portion 30.
  • the opposing force is provided by way of a gas spring 50.
  • Point of contact B may move within a fixed limit along a stretch of the front edge of the arm portion 12, as will be described in detail below with reference to Figures 3 a and 3b.
  • Point of contact C connects the back portion 30 to the leg portion 40 and is facilitated by way of a sprocket 34 that is rotatably mounted on the leg portion 40, on a horizontal axis.
  • the sprocket 34 supports an arcuate toothed rack 32, that in this exemplary embodiment is integral to the back portion 30.
  • the back portion 30 remains on the sprocket 34 due to gravity and the lateral stabilisation provided thereto by point A, (in addition to the opposing force provided by, in this exemplary embodiment, the gas spring 50).
  • each of the three portions 12, 30, 40 may move relative to one another, simultaneously ,by the action of partially rotating the back portion 30 about point A (within its range of freedom, which is described below). It will be apparent to a person skilled in the art that the portions should move relative to one another by correct movement of any of the three portions 12, 30, 40.
  • the back portion 30 in this embodiment comprises a wooden back member 30, to which is attached two plate members 14, the two members 14 having an axle therebetween that intersects and retains the arm portion 12 at points (as described above with reference to Figure 1).
  • a lower part of the back portion 30 is arcuate in shape along one edge and tooth means are provided along this arcuate edge, thereby providing an arcuate toothed rack 32 that may interact with the sprocket 34 provided on the leg portion 40.
  • the shape and dimensions of the arcuate toothed rack 32 (relative to the dimensions of other essential parts of the chair that are identified below) is very important to the functionality of the chair in that if any one of the essential parts were to vary in size or configuration, beyond a certain threshold, the three portions 12, 30, 40 would not be able to interact in such complimentary fashion and thus the chair 10 would not function properly.
  • the teeth of the arcuate toothed rack 32 comprise a high density polymer that is bonded to the back portion 30, however any suitable material may be used that has the necessary strength characteristics.
  • first axle 36 at a lower end and a second axle 38 (not shown in this Figure) at an upper end, which maybe used for anchoring the seating means (also not shown - this is described later with reference to Figure 5).
  • the arm portion 12 comprises a wooden arm member 12 that is substantially of a 'boomerang'-like shape, when viewing its face of largest surface area from a perpendicular axis.
  • a section of the front edge running from 18 to 16 is highlighted by a thicker line and corresponds to the travel path of a roller means 44 that is provided at an upper end of the leg portion 40.
  • the roller means 44 travels along the front edge of the arm portion 12 between 16 and 18, being held against the front edge by way of the gas spring 50 pressing the front edge of the arm portion 12 towards the roller means 44.
  • the gas spring also keeps the arcuate toothed rack 32 pressed firmly against the sprocket 34.
  • the roller means 44 acts as a limit point for the front edge of the arm portion 12 . Due to this arrangement, the shape and configuration of the portion between 16 and 18 is another important aspect of the invention as it affects the relationship between points A and C and also serves to aid in raising and lowering the load bearing surface.
  • the lower end of the arm portion 12 comprises wheel means 20 that contacts the floor 15 at point D and enables the arm portion 12 to move forward and backwards, relative to the floor 15, without undue friction therebetween.
  • the upper end of the arm portion 12 is rotatably mounted to the back portion 30 at point A (as described above, with reference to Figure 1).
  • the leg portion 40 comprises a generally 's' shaped member, which in this exemplary embodiment of the present invention is made of wood.
  • a roller means 44 is provided at an upper end of the leg portion 40, mounted outwardly with respect to each of the corresponding sides of the leg portion 40.
  • a sprocket 34 is rotatably mounted approximately halfway along the leg portion 40 and is mounted on the same face to that of the roller means 44.
  • the sprocket 34 is fixed mounted on a third axle 34b that extends between the two corresponding sides of the leg portion (and thus contains a sprocket 34 at either end of the axle 34b).
  • a ratchet (not shown) is also fixed mounted on the third axle 34b on the opposite side of the leg portion 40 to the sprocket 34.
  • the ratchet is engaged by a pawl (not shown) that is that is fixed mounted on a fourth axle 42 that passes between the two sides 40.
  • the pawl engages the sprocket 42 by way of return means (not shown), such that the ratchet may move freely in one direction but may only move in the opposite direction if the pawl is withdrawn from the ratchet.
  • the ratchet (and thus the sprocket 34) may move freely in a direction that corresponds to the chair 10 moving towards its upright position, but may not move in the direction that corresponds to the chair 10 moving towards its horizontal position.
  • a handle (not shown) is provided on one or both sides of the chair 10 to enable a user to easily remove the pawl from the ratchet.
  • the return means will return the pawl once pressure is removed from the handle.
  • the return means may comprise a spring, elastic material or be effected by gravity, or by any other suitable means.
  • the third axle 34b (having the fixed-mounted sprockets thereon) maybe driven my motor means, such that a user may automatically move the chair from it's upright to it's horizontal position (and vice versa) by way of some electronic control means for controlling the motor, hi such an embodiment, the motor may have some form of gearing between its initial output and the third axle 34b to increase the torque supplied thereto and also to give better controllability.
  • the motor means could be mains powered, or may have its own power source located in or near the chair 10.
  • the motorised system may include means for removing and replacing the pawl in accordance with the motor functioning.
  • the seating means comprises two chains (one for each corresponding side of the chair), with each chain being anchored to the chair at an upper end by the second axle 38 and at a lower end by a fifth axle 44b (upon which the roller means 44 may be mounted).
  • a further piece of chain 52c extends from each of the two chains approximately one third of the way up and is anchored to the first axle 36, thereby dividing the chain into an upper part 52b, a lower part 52a and a tensioning part 52c.
  • each part of chain (in relation to the dimensions of the chair 10) ensure that there is tension in the chain 52a, 52b, 52c throughout the manipulation of the chair 10 from it's upright to it's horizontal position (and vice versa). Also, because the tensioning part 52c of the chain is anchored to the first axle 36, the seating means will raise in accordance with the arcuate toothed rack 32, as the chair assumes it's upright position.
  • any number of suitable materials maybe provided between the chains (the chains may have further chains therebetween, or indeed any suitable material having low creep and good tensile strength) to provide the seating means cover 60 and in this exemplary embodiment the cover 60 is made from leather and is removably attached to the chains 52a, 52b, 52c at its sides and fixed to the axles 38, 44b at it's top and bottom respectively.
  • the seating means cover 60 provides the load bearing surface that is, in this exemplary embodiment, supported by the chains.
  • a number of cross members may be provided at points between corresponding sides of the chair 10 that may be used, inter-alia, as further anchor points for the cover 60 and also to provide further support for a user and strength to the chair 10.
  • Figure 6 depicts a sequence of representations illustrating the stages that a chair 10, according to an exemplary embodiment of the present invention, moves through as it is manipulated from it's upright to it's horizontal position.
  • the chair 10 further comprises foot rest means 64 that extends from the chair in accordance with the chair moving towards it's horizontal position.
  • the footrest means 64 may be (passively) mechanically actuated in accordance with the movement of the lower part of the back portion 30 (for example an axle that is not shown that may be the common anchor point for the gas springs to the back portion 30), or by any other suitable part of the chair 10.
  • the foot rest means 64 may be extended and retracted by way of motorised means, either in relation to the chair being manually operated or in relation to a control signal or any other suitable input.
  • a portion of the extending/retracting may be done by a passive mechanism and the rest by motorised means.
  • the foot rest means 64 may be manually withdrawn and attached.
  • a user 62 is sat in the chair in it's upright configuration, as would be the case if the user were dining or the like.
  • the user 62 begins to manipulate the chair 10 towards it horizontal position and in this image it can be seen that the back portion 30 has began to rotate about point A and thus the sprocket 34, that supports the arcuate toothed rack 32, rotates in a clockwise manner (as it would be viewed in this Figure).
  • the roller means 44 at point B shifts slightly down the front edge of the arm portion 12, from 16 and in a direction towards 18.
  • point A drops slightly in accordance with the rotation thereabout of the back portion 30, thereby causing point D to shift forward slightly (the point of contact between the arm portion 12 and the floor 15).
  • the foot rest means 64 begins to extend from the chair.
  • the back portion 30 has rotated further about point A and thus point C moves further up the arcuate toothed rack 32 which further lowers and levels the back portion 30.
  • the roller means 44 at point B shifts slightly further down the front edge of the arm portion 12, in a direction towards 18. Again, points drops slightly in accordance with the rotation thereabout of the back portion 30, thereby causing point D to shift further forwards.
  • the foot rest means 64 extends further from the chair.
  • the chair 10 is almost in it's horizontal position.
  • Point C is almost as far along the arcuate toothed rack 32 as it will travel and point A is almost as low as it will go.
  • Point B is nearly at 18 and the distance between points D and E is almost at a maximum.
  • the foot rest means 64 is almost fully extended.
  • the fifth image shows the chair in its horizontal position, with point C as far along the arcuate toothed rack 32 as it will travel (it should be noted that in fact the cam shaped toothed rack 32 travels across the sprocket 34) and point s is as low as it will go, relative to the ground 15.
  • Point B is at 18 and the distance between points D and E is at a maximum.
  • the foot rest means 64 is fully extended.
  • FIG. 7 a side view schematic representation of a chair 10 is shown having overlapping representations of the chair 10 moving between it's horizontal and upright positions.
  • the darker lines represent the seating plane at various stages and thus illustrate the height variation between its horizontal seating (or support) level 70 and upright seating level
  • the respective distances from the floor are 28cm when horizontal and 47cm when upright. It is therefore apparent that the chair 10 does elevate a user when in it's upright position and indeed lower the load bearing surface when in it's horizontal position.
  • a chair 100 is shown according to a second exemplary embodiment of the present invention.
  • the chair 100 is similar to chair 10 in that chair 100 also comprises arm portion 12, back portion 30 and leg portion 40 (a corresponding pair of each).
  • Chair 100 differs from chair 10 in that arcuate toothed rack 32 and sprocket 34 have be replaced with adjustment element 104 and rod 102.
  • Rod 102 provides a weight bearing platform that supports a portion of protrusion portion 104.
  • Rod 102 maybe a continuous piece that is connected to both corresponding leg portions 40, or in an alternative embodiment, rod 102 may comprise one or more dowels fixed to/in and protruding from leg portion 40.
  • Rod 102 may comprise any suitable material that provides the necessary strength to support the combined weight of the upper chair portion supported thereon and the maximum reasonable weight of a user of chair 100.
  • rod 102 may comprise a metal, such as steel, aluminium, iron, or a suitable alloy.
  • rod 102 could comprise a hardwood, or man made material such as plywood or the like, or rod 102 could comprise plastic, polymer, preferably high density polymer. It is envisaged that rod 102 could be an integral part of leg portion 40, i.e. a protruding part or other surface profile that provides a weight-bearing surface to support adjustment element 104.
  • Arm portion 30 comprises an inner face (facing another respective arm portion) and an outer face, the two faces joined by a peripheral edge portion.
  • a bridging portion 112 is fixed to an area of the outer surface of arm 30, at an area generally where the arcuate tooth rack 32 is located on chair 10.
  • Bridging portion 112 is fixed on one side to arm portion 30 and an opposing side is fixed to adjustment element 104, as illustrated in Figures 9a and 9b.
  • Bridging portion 112 may comprise a single piece or a number of pieces, providing adjustment element 104 is securely held at a predefined distance from peripheral edge of arm portion 30.
  • Bridging portion 112 comprises a strong material, such as stainless steel, plywood, polymer, or the like, that has properties sufficient to fix adjustment element 104 to back portion 30 under the weight of the upper portions of chair 100 and a user.
  • bridging portion 112 comprises a single piece attached by nuts and bolts to back portion 30 and adjustment element 104.
  • two or more of: back portion 30; bridging portion 112; and/or adjustment element 104 may comprise of a single piece of material.
  • all three parts 30, 112, 104 may be formed out of a single material, such as plastic, wood or metal, having a channel 110 and surface profile equivalent to notches 104a and recesses 104b of adjustment element 104.
  • FIG. 10a a cross sectional diagram is shown, indicating the arrangement of arm portion 30, bridging portion 112 and adjustment element 104.
  • a channel 110 is defined between facing peripheral edges of arm portion 30 and adjustment element 104.
  • rod 102 is supporting adjustment element 104, by way of the upper surface to rod 102 being in contact with the lower face of adjustment element 104 at an area between two consecutive notches 104a thereon.
  • Figure 10b shows rod 102 within passageway 110, as would be the case when back portion 30 is to be moved from an upright to a horizontal position.
  • Channel 110 is of dimension wide enough to permit passage there through of diameter of rod 102.
  • adjustment element 104 comprises a number of notches 104a, providing a surface profile configured to be capable of bearing against rod 102 so as to maintain chair 100 in a plurality of predetermined positions.
  • the notches 104a may be angled so as to enable simple passageway across rod 102 in one direction (in the case of the Figures 8 a to 9b this easy passage is to the right) and provide difficult passageway over rod 102 in the other direction (in this case to the left). It will be appreciated that each recess 104b between flanking 104a, when rested on rod 102, provides a different chair configuration.
  • the recess 104b to left hand side of notch 104a closest to the head portion of back member 30 provides the most reclined chair configuration and the recess 104b to left hand side of the notch 104a closest to the base of back member 30 provides the most upright configuration of chair 100. It is envisaged that many configurations of protrusion portion will provide this function.
  • Chair 100 begins in a generally horizontal position as depicted in Figure 8a.
  • Rod 102 supports protrusion portion 104 at a recess 104b between consecutive notches at its upper most extremity (indicated towards the right hand side of adjustment element 104 as shown in Figure 8a 104).
  • Seating platform 114 and back platform 116 together form a supporting surface to support the body of a user.
  • Seating platform 114 connects at one end to a portion of leg portion 40 (in this embodiment by way of a rod connecting the respective pair of leg portions) and at an opposite end is connected to back support 116 and/or anchored to back portion 30.
  • back platform 116 is connected to back portion 30 (in this embodiment connected to a rod between respective pair of back portion 30) and at a lower end connected to seat platform 114 and/or a lower area of back portion 30. It would be appreciated by one skilled in the art that in this configuration, seat platform 114 is at a low height relative to the ground.
  • a user may rotate back portion 30 anticlockwise about point A (as shown in Figures 8a and 8b) and in doing so a notch 104a on adjustment element 104 will, due to its surface profile, easily slide across rod 102.
  • adjustment element 104 will drop until rod 102 abuts against the surface profile of a recess between flanking notches 104a.
  • chair 100 has moved a step towards being in its most upright position, and this process maybe repeated until rod 102 abuts against recess in front of final notch 104a, as depicted in Figure 8b.
  • chair 100 is in an upright position and as such, seating platform 114 and back platform 116 are a high "use" position, relative to a ground.
  • back portion 30 may be rotated clockwise until rod 102 exits channel and wherein anticlockwise rotation of back portion 30 thereafter enables rod 102 to be positioned back at its initial location as depicted in Figure 8a.
  • Chair 100 does not require the use of gas spring 50 (of chair 10) because the weight of back portion 30 causes ami portion 14 to exert a force against roller 44, due to back portion 30 being held in a fixed position on rod 102 by way of the surface profile of adjustment element 104 (i.e. recess 104b between flanking notches 104a).
  • Figure 11 shows adjustment element 104 having notch 104a configuration according to a preferred embodiment of the present invention.
  • Figure 11 also indicates channel 110 between adjustment element 104 and back portion 30.
  • bridging portion 112 is not shown in Figure 11.
  • Notches 104a have a "wave-like" surface profile, such that rod (not shown) may be securely received within recess 104b and pass over notch 104a easily in one direction (in Figure 11 from the top portion towards the bottom portion), but movement in the opposite direction is restricted by the surface profile of the peak of notch 104a.
  • a further exemplary embodiment of the invention is shown in Figure 13, wherein the movement of back portion 30 between a generally vertical and generally horizontal position is enabled by a second rod (not shown) and partitioned channel 11 Oa, 11 Ob.
  • Second rod may comprise a wooden, plastic or metal dowel, rod, or bar affixed to leg portion 40, or any other suitable part, such as a ball joint element or the like.
  • the channel is partitioned longitudinally into upper channel 110b and lower channel 110a.
  • Lower channel 110a is closer to adjustment element 104 than upper channel 110b.
  • rod 102 is used to support parts of adjustment element during movement of back portion from a generally horizontal position towards a generally vertical position, as with the second embodiment described above.
  • a second rod is provided on leg portion 40, approximately 50mm above rod 102 in a direction towards roller 44, such that when the back portion 30 is at it's most vertical position, it may be lifted such that second rod enters lower channel 110a and thus supports back portion 30 a distance above rod 102 such that adj ustment element 104 does not contact rod 102.
  • back portion 30 may be rotated about position A so as to move back portion 30 towards a generally horizontal position and in doing so second rod moves through lower channel HOa in a direction indicated by arrow X.
  • the contours of channel 110a are such that adjustment element does not foul rod 102 during movement between an upright and a generally horizontal position.
  • second rod exits lower channel 110a, and back portion falls such that rod 102 again supports adjustment element 104 and chair is in a generally horizontal position.
  • second rod moves through upper channel 110b in direction indicated by arrow Y.
  • upper channel 110b acts to provide a passage for second rod to move back to the "start side" of lower channel 110a and it is not required that second rod contact any part of upper channel 110b.
  • second rod will have substantially exited upper channel HOb so as it enable it to be easily aligned with lower channel 110a as back portion is lifted away from rod 102 as described above.
  • An advantage of the embodiment described with reference to Figure 13 is that the back portion 30 is supported at a higher position relative to the floor when moving back towards a generally horizontal position and also that the rod 102 is only required to support the weight of back portion for movement in a single direction, thereby reducing wear, stress and the like.
  • Figure 12a shows chair 100 in a generally horizontal use configuration.
  • back portion 30 is in a generally horizontal configuration and seat platform 114 is at a low position relative to ground, due to points of contact B (i.e. roller fixed to leg portion 40) being at a position close to point D at the foot of arm portion 12.
  • Point C i.e. rod 102 contacts adjustment element 104 at an "upper" area.
  • chair 100 is suitably configured to be used as a bed or the like.
  • seat back 30 has been rotated about point A to a more upright configuration, point of contact C contacts adjustment element 104 towards its lower end, point of contact B has moved further along on portion 12 towards point of contact A and point of contact A has raised in height relative to the height of point D.
  • Seat platform 114 is now at a high position, relative to the ground. In this configuration, the chair is suitable for use, for example, as a dining chair and the like.

Abstract

Cette invention porte sur une chaise (10), ayant un siège monté sur des moyens de support (30, 40) pour fournir une surface portant une charge au-dessus du sol et un dossier (30) monté de façon pivotante par rapport à une extrémité distale dudit siège (10) pour un mouvement entre une première configuration dans laquelle le dossier (30) est vertical par rapport au siège et une seconde configuration dans laquelle ledit dossier (30) est sensiblement horizontal par rapport au sol (15). La chaise comprend en outre un mécanisme d'inclinaison (32, 34) servant à soulever et abaisser le siège par rapport aux moyens de support (30, 40), de telle sorte que, dans ladite première configuration, la surface portant la charge est plus élevée par rapport au sol (15) que dans la seconde configuration.
PCT/GB2007/002417 2006-06-28 2007-06-28 Chaise WO2008001093A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0901130A GB2453299A (en) 2006-06-28 2007-06-28 Chair

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0612756A GB0612756D0 (en) 2006-06-28 2006-06-28 Chair
GB0612756.7 2006-06-28

Publications (1)

Publication Number Publication Date
WO2008001093A1 true WO2008001093A1 (fr) 2008-01-03

Family

ID=36888173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/002417 WO2008001093A1 (fr) 2006-06-28 2007-06-28 Chaise

Country Status (2)

Country Link
GB (2) GB0612756D0 (fr)
WO (1) WO2008001093A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2177132A1 (fr) * 2008-10-20 2010-04-21 Sedus Stoll AG Dispositif destiné au réglage de l'inclinaison de siège et siège
US8979185B1 (en) 2014-08-18 2015-03-17 Ray H. Redel Two-position folding chair
FR3070007A1 (fr) * 2017-08-08 2019-02-15 Vincent Fillon Fauteuil
CN114129383A (zh) * 2021-12-27 2022-03-04 尹钢 一种便于机械手行走的渐开线齿形链轨道的可展平按摩椅

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US192284A (en) * 1877-06-19 Improvement in folding chairs
US421018A (en) * 1890-02-11 Adjustable chair
FR2217921A6 (fr) * 1973-02-13 1974-09-06 Sirot Robert
FR2497448A1 (fr) * 1981-01-06 1982-07-09 Goiset Paul Fauteuil a dossier pivotant
NL8403070A (nl) * 1984-10-09 1986-05-01 Ubbink Roosendaal B V Verstelbare en inklapbare stoel, in het bijzonder tuinstoel.
EP0348274A1 (fr) * 1988-06-21 1989-12-27 Grosfillex S.A.R.L. Fauteuil repliable à positions multiples réglables en inclinaison de dossier et en niveau d'assise
GB2312832A (en) * 1996-05-08 1997-11-12 Peter Rebbettes Variable geometry chair
NL1005853C2 (nl) * 1997-04-21 1998-10-22 Erik Johannes Ruessink Verstelbare stoel.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US192284A (en) * 1877-06-19 Improvement in folding chairs
US421018A (en) * 1890-02-11 Adjustable chair
FR2217921A6 (fr) * 1973-02-13 1974-09-06 Sirot Robert
FR2497448A1 (fr) * 1981-01-06 1982-07-09 Goiset Paul Fauteuil a dossier pivotant
NL8403070A (nl) * 1984-10-09 1986-05-01 Ubbink Roosendaal B V Verstelbare en inklapbare stoel, in het bijzonder tuinstoel.
EP0348274A1 (fr) * 1988-06-21 1989-12-27 Grosfillex S.A.R.L. Fauteuil repliable à positions multiples réglables en inclinaison de dossier et en niveau d'assise
GB2312832A (en) * 1996-05-08 1997-11-12 Peter Rebbettes Variable geometry chair
NL1005853C2 (nl) * 1997-04-21 1998-10-22 Erik Johannes Ruessink Verstelbare stoel.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2177132A1 (fr) * 2008-10-20 2010-04-21 Sedus Stoll AG Dispositif destiné au réglage de l'inclinaison de siège et siège
US8979185B1 (en) 2014-08-18 2015-03-17 Ray H. Redel Two-position folding chair
FR3070007A1 (fr) * 2017-08-08 2019-02-15 Vincent Fillon Fauteuil
CN114129383A (zh) * 2021-12-27 2022-03-04 尹钢 一种便于机械手行走的渐开线齿形链轨道的可展平按摩椅
CN114129383B (zh) * 2021-12-27 2023-12-01 浙江豪中豪健康产品有限公司 一种便于机械手行走的渐开线齿形链轨道的可展平按摩椅

Also Published As

Publication number Publication date
GB0901130D0 (en) 2009-03-11
GB0612756D0 (en) 2006-08-09
GB2453299A (en) 2009-04-01

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