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WO2008144874A1 - Module de poste de travail pour siège de bureau inclinable - Google Patents

Module de poste de travail pour siège de bureau inclinable Download PDF

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Publication number
WO2008144874A1
WO2008144874A1 PCT/CA2007/001406 CA2007001406W WO2008144874A1 WO 2008144874 A1 WO2008144874 A1 WO 2008144874A1 CA 2007001406 W CA2007001406 W CA 2007001406W WO 2008144874 A1 WO2008144874 A1 WO 2008144874A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixed
workstation module
user
working platform
workstation
Prior art date
Application number
PCT/CA2007/001406
Other languages
English (en)
Inventor
Peter Kielland
Original Assignee
Peter Kielland
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 Peter Kielland filed Critical Peter Kielland
Priority to CA002671910A priority Critical patent/CA2671910A1/fr
Publication of WO2008144874A1 publication Critical patent/WO2008144874A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B83/00—Combinations comprising two or more pieces of furniture of different kinds
    • A47B83/001—Office desks or work-stations combined with other pieces of furniture, e.g. work space management systems
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B23/00—Bed-tables; Trays; Reading-racks; Book-rests, i.e. items used in combination with something else
    • A47B23/04—Bed-tables; Trays; Reading-racks; Book-rests, i.e. items used in combination with something else supported from table, floor or wall
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C16/00—Stand-alone rests or supports for feet, legs, arms, back or head
    • A47C16/02—Footstools; Foot-rests; Leg-rests
    • A47C16/025—Footstools; Foot-rests; Leg-rests adjustable, swivelling, rocking
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C9/00—Stools for specified purposes
    • A47C9/02—Office stools; Workshop stools
    • A47C9/022—Office stools; Workshop stools movably mounted on a working-table or the like

Definitions

  • This invention relates to desks and chairs and more particularly to a workstation module for a reclinable office chair.
  • Office workers often suffer fatigue and lost productivity due to long hours spent seated at a desk. Over the years, office furniture manufacturers have responded with a variety of ergonomic office chairs and desks designed to alleviate this problem.
  • One early solution was the advent of swiveling, and castered office chairs that permitted a worker to more easily multitask between different workstations (for example: to scoot between a typewriter and a nearby filing cabinet).
  • the advent of computers resulted in even more sedentary workers so recent improvements have focused more on optimizing the ergonomics of their seating posture. Castered, swiveling and now ergonomically adjustable office chairs have therefore become ubiquitous in the office environment.
  • these ergonomic chairs possess a variety of mechanical controls for adjusting the chair's seat-height with respect to the floor, its angle between the seat cushion and seatback cushion, its overall tilt angle, its armrest height, its lumbar support etc.
  • Trimnell (US 5,893,607) and Sher (US 6,773,060) propose much simpler and inexpensive solutions that attach directly to an existing office chair.
  • Such devices are relatively inexpensive however they provide no support to the user for a reclining work posture and are therefore ergonomically sub-optimal.
  • their cantilevered geometry cannot support heavy work tools such as a CRT computer monitor.
  • these devices encumber the user when attempting to stand up or sit down.
  • Yet another objective of the present invention is to provide a workstation module optimized for use with laptop computer but that can optionally be augmented for use with desktop computers.
  • a further objective of the present invention is to provide a workstation module that can provide supplemental adjustability to fit the needs of particularly large or small users.
  • my invention is a workstation module for a reclinable office chair.
  • the chair comprises a mobile base supporting a seat having a top surface and a bottom surface.
  • the seat includes an adjustable backrest, a left armrest having an upper surface and a right armrest having an upper surface.
  • the base comprises a central telescoping column supporting the seat and a plurality of radially extending supporting members each having an inside end fixed to the bottom of the column and an outside end adapted to carry swivel castors for mobility.
  • the workstation comprises a supporting base comprising a first base member being a cross-member having a first end and a second end, a bottom surface and a top surface, a second base member fixed near its mid point to the first base member first end and oriented perpendicular thereto and a third base member fixed near its mid point to the first base member second end and oriented perpendicular thereto thereby forming an H-shaped supporting base.
  • the support base may also have a "T" configuration, an "O" configuration or a squared "C” configuration.
  • the second and third base members each have first and second ends that are adapted to carry feet or castors to support the base off of the floor.
  • the workstation further includes a vertical column having a first and second end.
  • the first end is fixed to the centre of the first base member top surface and the second end is fixed to an angled support member adapted to support a tilting worktable having a top edge, a bottom edge, a left edge, a right edge, an upper working surface and a lower surface having a centre point.
  • a left leg support platform and a right leg support platform fixed to the vertical column.
  • a four-legged table may be used in conjunction with the workstation or the four-legged table may be incorporated into the tilting worktable.
  • a workstation module comprising a base portion, a working platform having an adjustable tilt angle and having a top surface and a bottom surface and disposed above the base portion at a first height adjustable by first adjustable means and ergonomically optimized for comfort of a user, vertical support means disposed between the base portion and the working platform and user leg support means attached to the vertical support means at a second height adjustable by second adjustable means.
  • the base portion comprises a first member comprising a cross member having a first end, a second end, a middle and a first plurality of apertures there-through, a second member having a first end, a second end and a middle wherein the second member middle is fixed to the cross member first end and a third member having a first end, a second end and a middle wherein the third member middle is fixed to the cross member second end thereby forming an "H"-shaped base portion.
  • the vertical support means comprises a vertical member having second plurality of apertures there-through, a first end and a second end, wherein the first end includes an attachment channel having a third plurality of apertures therein, wherein the attachment channel is adapted to fit over the cross member, and wherein the third plurality of apertures is adapted to coincide with the first plurality of apertures so that the attachment channel may be fixed by fixing means to the cross-member thereby permitting adjustable placement of the vertical member along the cross member.
  • the vertical support means further comprises a telescoping tilting member comprising a first inclined member having a first end and a second end, wherein the first inclined member first end is adjustably pinned in a pivoting relationship to the vertical member second end so that the angle of the telescoping tilting member may be adjusted with respect to a horizontal plane and the first inclined member second end telescopes within a first end of a second adjacent and co-axial inclined member.
  • a telescoping tilting member comprising a first inclined member having a first end and a second end, wherein the first inclined member first end is adjustably pinned in a pivoting relationship to the vertical member second end so that the angle of the telescoping tilting member may be adjusted with respect to a horizontal plane and the first inclined member second end telescopes within a first end of a second adjacent and co-axial inclined member.
  • the second adjacent and co-axial inclined member second end is adjustably pinned to the working platform bottom surface permitting the adjustable tilt angle.
  • the telescoping tilting member has an adjustable length by releasably clamping the first end of the second adjacent and co-axial inclined member with respect to the second end inclined first member.
  • the user leg support means comprise a first leg support attached at the adjustable second height to one side of the vertical member and a second leg support attached to the opposite side of the vertical member at the adjustable second height.
  • the first leg support and the second leg support are tiltable by tilting means to an angle selectable by the user so that the first and second leg supports hold the calves of the user in a comfortable manner and permit the user full leg extension underneath the working surface.
  • the first and second leg supports are cushioned for user comfort.
  • a workstation module comprising a base portion, a working platform disposed above the base portion at an adjustable first height, vertical support means having a first end and a second end disposed between the base portion and the working platform and user leg support means, wherein the working platform is attached to the vertical support means second end at a fixed second height, and wherein the user leg support means are attached to the vertical support means between the vertical support means second end and the vertical support means first end.
  • This embodiment of the workstation module has a base portion that comprises a first member comprising a cross dowel-member having a first end, a second end and a middle, a second member having a first end and a second end, wherein the second member first end is fixed to the cross dowel-member first end and a third member having a first end and a second end wherein the third member first end is fixed to the cross dowel-member second end thereby forming an square "C"-shaped base portion.
  • the workstation module working platform is a rectangular member having a suitable top surface area for a work object and a bottom surface.
  • the workstation module working platform bottom surface is removeably attached to the vertical support means second end by first pivot means.
  • the workstation module platform includes a bottom end having a restraining member fixed thereto to prevent the work object from fall off the bottom end of the working platform.
  • the workstation module restraining member has a rounded profile to comfortably support the wrists of the user during keyboarding operations.
  • the workstation module vertical support means comprises an inclined member having an angle of inclination from a horizontal surface adjustable between zero degrees and ninety degrees, a first end and a second end, wherein the inclined member first end is attached to the cross dowel-member middle by first adjustable pivoting means, and the inclined support member second end is attached to the working platform bottom surface by the second pivoting means.
  • the workstation module first pivoting means comprises a first aperture in the inclined member first end adapted to frictionally fit around the cross dowel-member middle so that the user is able to increase or decrease the angle of inclination by raising or lowering the working platform thereby determining the first adjustable height.
  • the angle of inclination may be fixed by fixing means located adjacent to the first aperture.
  • the fixing means comprises a first aperture in the first end of the inclined member and a plurality of second apertures in the cross dowel- member, the plurality of second apertures serially arranged around the circumference of the cross dowel-member, wherein each second aperture of the plurality of second apertures represents a predetermined angle of inclination, and further wherein the angle of inclination is fixed by aligning the first aperture and one of the plurality of second apertures and inserting a pin therein.
  • the fixing means may also comprise a compression clamp adjacent to the inclined member first end aperture, wherein the compression clamp is adapted for compression of the inclined member first end aperture around the cross dowel-member thereby retaining the angle of inclination.
  • the fixing means may also comprise a splined portion located at the middle portion of the cross dowel-member and an aperture in the first end of the inclined member, the aperture having serrations adapted to mesh with the spline portion thereby maintaining a predetermined angle of inclination when the serrations are meshed with the spline portion.
  • the second pivoting means comprises a second aperture in the inclined member second end and an apertured bracket adapted to receive the second aperture to that a pin may be inserted through the apertured bracket and the second aperture thereby attaching the inclined member second end to the working platform bottom surface and permitting adjustment of the working platform tilt angle.
  • the user leg support means comprises an attachment bracket adapted for sliding engagement along the inclined support member, wherein the attachment bracket is fixable anywhere along the inclined member by releasable fixing means, and wherein a first leg support is attached to the left side of the attachment bracket and a second leg support is attached to the right side of the attachment bracket so that the user is able to slide the first and the second leg supports in a parallel manner up or down the inclined support member and fix the location of the leg support means in a comfortable position.
  • the workstation has a stowage and shipping position wherein the inclined member sits parallel to the second and third base members and the tilt angle of the working platform is zero so that the workstation may be easily stowed and shipped.
  • the angle of inclination is adjustable by second pivot means between the vertical support second end and the inclined member first end.
  • the invention may also take the form of a combination of a workstation module with a reclinable office chair.
  • the chair is comprised of a mobile base comprising a central telescoping column having a top end and a bottom end. The top end is fixed to a seat bottom and the bottom end is fixed to a plurality of radially extending supporting members each having an inside end fixed to the bottom of the column and an outside end adapted to carry a swivel castor for mobility.
  • the workstation module comprises a supporting base comprising a first base member having a first end, a second end and a middle and a second base member having a first end and a second end.
  • the first end of the second base member is fixed to the middle of the first base member thereby forming a "T"- shaped base.
  • a vertical supporting member having a length, a first end fixed to the middle of the first base member and a second end fixed to a working platform.
  • the vertical supporting member comprises a plurality of apertures along its length, and leg supporting means adapted for attachment to the vertical member at one of the plurality of apertures.
  • an office module kit comprising a leg rest and a keyboard rest used in combination with a computer tower, an office chair and horizontal working surface
  • An office module kit comprising a leg rest and a keyboard rest used in combination with a computer tower, an office chair and horizontal working surface wherein the leg rest is adapted to fit over the top of the computer tower and is angled at a first predetermined angle to provide an ergonomic comfort position for an operator; and wherein, the keyboard rest is included at a second predetermined angle for maximum comfort and stress free operation of the keyboard.
  • the leg rest is adapted to fit over the top of the computer tower and is angled at a first predetermined angle to provide an ergonomic comfort position for an operator.
  • the keyboard rest is includes at a second predetermined angle for maximum comfort and stress free operation of the keyboard.
  • Figure 1 illustrates a perspective front view of one embodiment of the present invention with a user seated with back erect and legs outstretched working with a laptop computer.
  • Figure 2 illustrates a side view of the same embodiment shown in Figure 1 with its user seated in a semi-reclined posture.
  • Figure 3 illustrates a side view of the same embodiment shown in Figure 1 with the user seated in an erect position with both feet on the ground.
  • Figure 4 illustrates a side view of the same embodiment shown in Figure 1 which uses a modified office chair to safely permit a fully reclined user posture.
  • Figure 5 illustrates a close-up, detailed view of the tilting worktable shown in Figure 4.
  • Figure 6 illustrates a close-up, detailed view of the calf supports shown in Figure 1 .
  • Five instances of the support labeled A to E are shown mounted to the central support column to illustrate a preferred adjustment mechanism.
  • Figure 7 illustrates a perspective view of the same embodiment of the invention as shown in Figure 1 and illustrating the use of the invention with a conventional desk and desktop computer.
  • Figure 8 illustrates a perspective view of another embodiment of the invention having a bolt-on table fixture augmenting the functionality of the invention as shown in Figure 1 .
  • Figure 9 illustrates a monolithic embodiment of the invention having no moving parts or adjustments.
  • Figure 10 illustrates another embodiment of the invention which has greater adjustability than the embodiment shown in Figure 1 .
  • Figure 1 1 illustrates another embodiment of the invention which is easily collapsible for storage.
  • Figure 1 2 illustrates the same embodiment of the invention as shown in Figure 1 1 in a collapsed configuration for storage.
  • Figure 1 3 illustrates one embodiment of the invention that supports the soles of the user's feet rather than the calves of their legs for semi- recumbent seating.
  • Figure 14 illustrates another embodiment of the invention which attaches to the base of an office chair.
  • FIG. 1 5 illustrates another embodiment of the invention.
  • Figure 16 illustrates yet another embodiment of the invention using tubular members.
  • Figure 1 7 illustrates another example of the invention in Figure 16 in a folded configuration.
  • Figure 1 8 depicts an alternate, kit embodiment of the invention that exploits additional office structures (other than the typical office chair), to provide the desired support structure for the user's calves and their computer equipment, thereby enabling the same recumbent working posture as the invention's non-kit embodiments.
  • FIG. 1 a front perspective view of my invention: a workstation module for a reclinable office chair.
  • User 2 is seated on a typical office chair 4, which in turn is positioned adjacent to my workstation 6.
  • Office chair 4 is ergonomically designed for user comfort and efficiency and comprises a base 8 supporting seat 10, seatback 1 2 and typically also includes left and right armrests 14 and 16 respectively.
  • Base 8 is typically comprised of 5 radial support members denoted 1 8, 20, 22, 24 and 26, each radial being supported at its outboard end by swivel-caster 28, 30, 32, 34 and 36 (these numbers not all shown on figure) and centrally joined to chair support column 38).
  • Support column 38 telescopes to provide seat height adjustability and typically employs a pneumatic piston mechanism.
  • lever 40 might adjust the length of telescopic support column 38
  • lever 42 might adjust the angle of seatback 1 2 with respect to seat 10
  • lever 44 might adjust the overall backwards tilt angle of the seat and seatback.
  • More sophisticated controls may be included to provide additional degrees of adjustment such as: armrest height, fore and aft seat position, lumbar support firmness, headrest position etc.
  • modern standards regulate the number and dimensions of base radials 18 to 24 with respect to the maximum tilt angle of seatback 12.
  • the office chair 4 shown in Figures 1 though 1 5 illustrate typical dimensions and proportions with respect to the illustrated, average-sized male human 2.
  • My invention 6 is also shown with typical dimensions, proportions and mechanical configurations however further variability may be reasonably inferred to accommodate atypical user physiques or work habits.
  • My invention 6 is comprised of a base portion 50, which centrally supports a substantially vertical column 52 and to which inclined support arm 54 is mounted.
  • Working platform 56 is tiltable and mounted to the upper end of inclined support arm 54 and two leg support platforms 58 and 60 are adjustably mounted to opposite sides of vertical column 52.
  • user 2 stretches out upon reclined office chair 4 placed adjacent to base portion 50 and straddles column 52 such that calves 62 and 64 rest on leg support platforms 58 and 60.
  • Working platform 56 is positioned for use by adjusting the reclinable chair's posture controls 40, 42 and 44 to locate and orient the user such that working platform 56 provides ergonomic support for office work object 66 (such as the illustrated laptop computer).
  • Other suitable work objects for support by table 56 might be: a keyboard, reading material, or writing material.
  • Working platform 56 is typically affixed to inclined support arm 52 by means of hinge clamp 68, thereby enabling adjustment of the table's tilt angle for greater comfort.
  • hinge clamp 68 When not being used as a workstation, the user may rotate table 56 to the horizontal to enable it to serve as a conventional table. See Figure 5 for more detail of the hinge clamp 68.
  • Restraining member 70 forms a ridge along the lower edge of the tilted working platform 56 thereby preventing work object 66 from sliding off.
  • the upper rear edge 72 of member 70 is typically rounded to provide a comfortable support for the user's wrist while keyboarding.
  • the lower rear edge 74 of member 70 may also be rounded to prevent marring of armrests 14 and 1 6 in the event that chair 4 is positioned such that the working platform's lower edge contacts the armrests.
  • the base portion 50 is comprised of an "H" shaped configuration of three members.
  • Base members 76, 78 and 80 are typically formed of rectangular cross-section steel and welded into the desired form however other member cross-sections, materials or joinery methods may be used (e.g.: bolted aluminum or glued wood).
  • Cross-member 80 joins left and right foot-members 76 and 78 to form an "H-shaped" base having open ends into which the casters of chair 4 may be advanced as required in order to adjust the horizontal position of the user 2 with respect to worktable 56.
  • the cross-member 80 has a first end and a second end and is shown joined near the midpoints of members 76 and 78 however those "H" proportions may be varied to increase the depth 77 of the open end 79 presented towards the user 2. Moving the cross-member 80 forward ultimately transforms the "H-shaped" base in a "C-shaped” base (see Figures 1 0 and 1 1 ).
  • An "E-shaped” base is also possible. This configuration (not illustrated) might also be employed in which the tip of its center prong is used to support the vertical column 52.
  • Other configurations for base portion 50 may also be used to minimize construction costs or to immobilize vertical member 52. For example: when provided for use by students in a university study hall, base portion 50 might be comprised of a plate bolted to the floor or vertical member 52 may even be simply embedded into a concrete floor.
  • Level adjuster feet 75 are typically provided at the corners of base 50 as illustrated dockable casters may also be used for increased mobility).
  • FIG. 2 there is shown in Figure 2 the same embodiment of my invention 6 as illustrated in Figure 1 however the user 2 is in a semi-reclined position.
  • the back 1 2 of the seat 4 is adjusted by use of one of the controls 40, 42 or 44 depending on the design of the chair.
  • the height of the chair seat on column 38 is also adjustable by the user.
  • the user's calves 62 and 64 are resting on the leg rests 58 and 50 adjustably fixed to vertical member 52.
  • Vertical member 52 is affixed at its first end 53 to cross-member 80 near its mid-point 81 . Fixation is typically by welding however appropriate bolted, clamped or hinged fixations may also be used.
  • the second end is typically by welding however appropriate bolted, clamped or hinged fixations may also be used.
  • Fixation means 68 may be rigid or articulated for more ergonomic adjustability.
  • Left and right leg support platforms 58 and 60 are affixed to vertical member 52 such that the reclined user's calves 62 and 64 rest comfortably on them.
  • the means used to affix platforms 60 and 62 to vertical may be a welded joint however its preferred embodiment is comprised of a mechanism 90 allowing both positional and angular adjustments of the platforms as further explained below.
  • the length and orientation of support member 54 result in both horizontal and vertical offsets of worktable 56 with respect to vertical member 52.
  • the support member's length and orientation are chosen such that horizontal offset 92 is approximately equal to 94 (the horizontal distance between the user's hands 96, 98 and calves 62, 64 when seat 4 back 12 is reclined).
  • distances 92, and 94 are also approximately equal to distance 1 00 (the pullback distance resulting from reclining seatback 1 2).
  • FIG 4 there is shown the same embodiment of my invention 6 as in Figures 1 to 3 however in the this Figure 4 the user 2 is in a fully reclined position and the seat back 1 2 is almost horizontal, that is, angle 1 1 0 approaches 1 80 degrees.
  • the user is able to adopt a comfortable resting position while at the workstation 6 and rest legs 1 1 2 and 1 14 on leg rests 58 and 60.
  • at least one 1 16 of the plurality of radial chair supports is extendable to a length 53 underneath the reclined chair back 1 2. This prevents tipping of the chair backwards.
  • the fully reclining chair can be stabilized against tipping by integrating it into this embodiment (see Figure 1 3).
  • FIG. 5 there is shown the lower surface 1 20 of the worktable 56. Also shown is vertical member 52 joining the inclined support member 54 at joint 59.
  • the second end 63 of inclined support member 54 is pivotally attached to the lower surface 1 20 of the work table 56 by means of an apertured hinge 122 over an aligned aperture (not shown) in the second end 63 of the inclined support member.
  • the hinge is adjustably fixed by way of locking clamp 1 24.
  • the hinge 1 22 is fixed to a plate 1 26 comprising screw holes 1 28 at each of its corners 1 30.
  • the lower surface 1 20 of the work table has a plurality of holes 1 34 in linear trains that are adapted to coincide with the screw holes on the plate 1 26. The work table can be therefore adjusted to suit the user and then fixed into place by screws.
  • FIG. 6 there is shown one embodiment of my invention in which the left and right leg rest platformsl 40 and 142 are adjustably fixed to vertical column 144.
  • the leg rest platforms are shown in a variety of positions A to E on the vertical column.
  • positions A and B between the left and right leg rest platform is a leg rest axle 1 50.
  • a first 1 52 and second 1 54 U-bolts are used to fix the axle 1 50 against the outside surface 1 56 of the vertical column 144.
  • the threaded ends 1 58 of the U-bolts are joined by a pressure plate 160 between them.
  • the pressure plate includes a threaded aperture 162 at its centre which receives a threaded shaft 164 with a knob 1 66. As the knob is turned, the threaded shaft threads into the aperture and against the inside surface 1 70 of the vertical column 144 thereby tightening the U-bolts against the axle and the outside surface of the vertical column. By loosening the U-bolts the leg rest platforms can be moved up and down the vertical column and angles to suit the user. In positions C and D the leg rest platforms can be reversed. In position E the leg rest platforms can be lowered to the bottom of the vertical column to act as foot rests.
  • each platform's upper surface may be somewhat concave to roughly conform to the user's calf and may also include a cushioned covering that further relives pressure points.
  • the leg rest platforms may be adjustable in a fore and aft motion by an eccentric fore/aft fixation of axle 1 50 onto the leg-rest platforms 140 and 142 to effect the desired movement. Note in position A that the distance from axle 1 50 to the front end of the platform is somewhat greater than the distance from the axle to their back ends.
  • my invention may be equipped with reversible platforms that can support either the user's calves or the user's feet.
  • the leg rest platforms In position E the leg rest platforms are installed cushion side down to present a flat durable surface 1 98 suitable for a footrest when the user desires only a lightly reclined posture.
  • FIG. 7 there is illustrated another embodiment of my invention 200 being used in conjunction with a full-sized desktop computer comprised of: CRT monitor 202, CPU unit 204 and keyboard 206.
  • the monitor 202 is too heavy and bulky to be supported by worktable 208 and so an existing, standard office desk 210 may be positioned in front of and somewhat above my invention 200 such that the reclined user 21 2 can achieve a usage configuration similar to that shown in Figure 1 and Figure 2.
  • the computer system's keyboard 206 resides on worktable 208 together with a computer mouse (not shown).
  • the system's CPU unit 204 may be placed either on the floor as shown or on table 210.
  • Figure 8 illustrates an embodiment of my invention 220 that integrates the same functionality as the configuration shown in Figure 7. Instead of resting adjacent to an existing office desk, a purpose-built desk 220 is dimensioned such that its legs 224 to 230 affix onto base members 232 and 234 using fixation bolts 222. Figure 8 also shows the location of knob 166 used to adjust the location and angle of the leg supports.
  • FIG. 9 there is shown yet another embodiment of my invention 250 which integrates a horizontal, monitor-supporting table 252 with the tilted, keyboard-supporting table 254.
  • Table 252 and tilted supporting table are joined at a fixed or adjustable hinged joint 256.
  • the horizontal table and the tilt table are supported by a vertical column 258 fixed to the mid-point of cross-member 260. If angular adjustment is provided, it may be used either to improve the ergonometric angle of keyboard 262 or to make the horizontal table 252 coplanar with tilt table 254 when the invention is not being used as a work station.
  • Figure 1 the frame members used to form base 60 may be bolted together for assembly by the end-user.
  • Figure 10 illustrates a bolted embodiment that facilitates such disassembly for compact storage.
  • the embodiment shown in Figure 1 also lends itself to compact storage: if the upper and lower ends of vertical member 52 have removable fixations to base 50 and table 56 then those upper and lower planar members can be boxed closely together for efficient shipping or compact storage. Even easier collapsibility can be incorporated into this general concept by utilizing lockable hinge joints (not illustrated) at the two ends of vertical member 52 thereby enabling base 50 and table 56 to be quickly folded into a flattened structure suitable for compact storage.
  • vertical support member 302 comprises a vertical support column 304 and a flange 306. Both the vertical support column and flange comprise a plurality of apertures vertically 308 and horizontally 310.
  • the horizontal cross-member 31 2 is also comprises a plurality of apertures 314.
  • the top end 316 of the vertical support column 304 is pivotally fixed by hinge 340 to the first horizontal component 320 first end 322.
  • the first horizontal component 320 second end 324 has a telescoping relationship with second horizontal component 326 first end 328 so that the length of the combined horizontal support 330 can be adjusted towards or away from the user 332 so that different user physiques can be accommodated.
  • the first horizontal component 320 is fixed positional with respect to the second horizontal component 326 by way of a locking camp 334.
  • the second end 336 of second horizontal component 326 is pivotally fixed to the underside 338 of work table 340 so that the tilt angle of the work table can be adjusted to suit the user.
  • the second end of the second horizontal component is fixed to the underside of the table using the same means as illustrated in Figure 5 and described previously.
  • Cross- member 31 2 and apertured flange 306 can be moved towards or away from the user thereby adjusting the distance of the leg supports and table from the user.
  • the height of the support 330 can be adjusted by adjusting the aperture point at which the first end 322 of the first horizontal member 320 is fixed to the vertical column 304. Therefore it is easy for the user 332 to establish ideal ergonomics.
  • the base 352 comprises first and second parallel members 354 and 356 having respective first ends 358 and 360 and second ends 362 and 364.
  • the first ends 358 and 360 of each of the first and second parallel members are joined by cross-member 366 thereby forming a channel-shaped or "C"-shaped support.
  • the angled support member 368 is a single piece column that has a first end 370 and a second end 372.
  • the angled support member first end 370 is pivotally fixed to the cross-member 366 at a pivot located at its mid- point so that the entire angled support member is able to pivot from zero degrees to 180 degrees around mid-point of cross-member 366.
  • the pivot may be fixed at a desired angle using a clamp or cotter pin.
  • a ratchet mechanism would permit the user to raise and lock the table height. Releasing the ratchet might be accomplished using a lever located at the pivot point or by remote cable actuation from the user's seated position.
  • This embodiment also incorporates leg supports 380 and 382 adjustably fixed to the angled support member by means previously described in respect of Figure 6.
  • the second end 372 of the angled support arm is pivotally connected to the underside 382 of the tilt table 384 so that the angle of the tilt table can be adjusted and fixed by a clamp.
  • the base 352 of the invention includes feet 386 at each of the first and second ends of the first and second parallel members 354 and 356. Casters may also be used.
  • FIG. 1 1 a there is shown a similar embodiment to that shown in Figure 1 1 except that the table top has a horizontal surface 371 and an inclined surface 373.
  • the operator can use a keyboard 375 on the inclined table top while the screen 377 rests on the horizontal portion.
  • the operator retains the same inclined posture as shown in Figure 1 1 .
  • FIG. 1 2 there is shown the same embodiment as Figure 1 1 of the invention 350.
  • the angled support member is shown at an angle of zero degrees with respect to the horizontal floor the base 352.
  • the first 354 and second 356 base members are shown parallel to the angled support member.
  • the tilt table 384 is shown at an angle of zero with respect to the angled support member. In these configurations the invention is easily folded and stored under a bed or in a closet.
  • FIG. 1 3 there is shown another embodiment of my invention 400 in which the "T"- shaped base 402 of the invention is directly attached to a support leg 404 of the chair 406. Adjustment of the base with respect to the support leg 404 is accomplished by way of a clamp 410.
  • the leg support platforms 41 2 and 414 are used as foot platforms.
  • FIG 14 which is the same embodiment as Figure 1 3, the operator is sitting upright with both feet on the floor.
  • Figure 1 5 there is shown one embodiment of the invention that is similar to the embodiment shown in Figure 14, but for the working surface comprises a tilted portion 23 upon which the keyboard 44 is placed and a horizontal portion 41 upon which the computer flat screen 61 is placed.
  • FIG 16 there is shown yet another embodiment of the invention 100 wherein the supporting members [1 02, 104, 106, 108, 1 1 0, 1 1 2, 1 14, 1 16, 1 1 8, 120] comprise tubular members or pipes and the pipes are fixed together by pipe connectors [1 22, 1 24, 1 26, 1 28, 1 30, 1 32, 1 34, 1 36, 1 38, 140].
  • the working surface 142 is similar to that shown in Figure 1 5 in that it comprises a horizontal surface 145 and a tilted surface 147 which is adjustable by way of T-connection 148. All of the pipe connectors are held to the pipes by way of setscrews 1 51 which can be easily loosened and tightened for disassembly and adjustment.
  • T-connection 148 Similar pipe connectors that employ threaded fixation or clamping fixation may also be used (not illustrated).
  • the setscrews on T-connection 148 can be loosened for angle adjustment of the tiltable surface 146.
  • Leg rests 1 58 and 1 58 are fixed to the ends of pipes 160 and 162 by way of elbow couplings 1 28 and 1 32.
  • Collar coupling 1 30 fixes the leg rest assembly to the vertical member 1 10. Again setscrews within each of the couplings permit easy adjustment of the height and angle of the leg rest assembly.
  • the base of the unit comprises two parallel members 1 02 and 104 separated by members 106 and 106.
  • the base members can be adjusted by setscrews 1 50 in couplings 1 22 and 1 24 to form either a "C" - shaped configuration to the base or an "H" - shaped configuration.
  • the working surfaces 144 and 146 and the leg rests 1 50 and 1 56 are fixed to their respective pipe members and elbow joints by way of flange members 160.
  • the bottom 1 62 of each of the working surfaces and leg rests are perforated 1 64 with lines of holes so that the location of the working surfaces and leg rests can be adjusted with respect to their pipe supporting members.
  • Pads 166 may be located at the end of each supporting base member 102 and 104 for floor contact.
  • Figure 1 7 is the same workstation of Figure 16 showing it in a folded configuration.
  • the setscrews in the necessary couplings have been loosened so that the workstation can be easily folded for storage.
  • FIG. 8 illustrates an alternate embodiment of the invention that further adapts and exploits typical office structures (other than the typical office chair and table utilized in the embodiments described above).
  • a leg rest 1 20 and a keyboard rest 1 22 are provided.
  • the leg rest is adapted to affix to the top of a typical desktop computer tower 124 and is angled at an angle 1 26 to provide an ergonomic comfort position for the operator 1 28.
  • Angle 1 26 is about 20 degrees.
  • the leg rest may also have a cushioned surface for added comfort.
  • the keyboard rest 1 22 is also included at an angle 1 30 for maximum comfort and stress free operation of the keyboard. Angle 1 30 is about 30 degrees.
  • the leg rest and the keyboard rest would be sold as a kit.

Landscapes

  • Special Chairs (AREA)
  • Combinations Of Kitchen Furniture (AREA)

Abstract

La présente invention concerne un poste de travail comprenant une base, une plateforme de travail et un élément de support entre la base et la plateforme de travail, ledit poste de travail étant utilisé en association avec un siège de bureau typique réglable de manière ergonomique. Le poste de travail comprend une paire de repose-jambes fixés de manière réglable à l'élément de support de telle sorte que l'utilisateur peut étendre complètement ses jambes et les appuyer de manière confortable. L'angle et la position de la plateforme de travail et des repose-jambes sont réglés en même temps que la hauteur du siège et son angle d'assise pour optimiser la posture de un utilisateur pendant qu'il utilise l'ordinateur.
PCT/CA2007/001406 2006-06-05 2007-08-14 Module de poste de travail pour siège de bureau inclinable WO2008144874A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002671910A CA2671910A1 (fr) 2006-06-05 2007-08-14 Module de poste de travail pour siege de bureau inclinable

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA002550385A CA2550385A1 (fr) 2006-06-05 2006-06-05 Module de poste de travail pour fauteuil de bureau a bascule
CA002590416A CA2590416A1 (fr) 2006-06-05 2007-05-29 Module de poste de travail pour fauteuil de bureau a bascule
CA2590416 2007-05-29

Publications (1)

Publication Number Publication Date
WO2008144874A1 true WO2008144874A1 (fr) 2008-12-04

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Application Number Title Priority Date Filing Date
PCT/CA2007/001406 WO2008144874A1 (fr) 2006-06-05 2007-08-14 Module de poste de travail pour siège de bureau inclinable

Country Status (3)

Country Link
US (1) US20070278834A1 (fr)
CA (3) CA2550385A1 (fr)
WO (1) WO2008144874A1 (fr)

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DE202011001313U1 (de) 2011-01-11 2011-03-10 Mang, Friederike Arbeitsplatz
DE202011001311U1 (de) 2011-01-11 2011-03-17 Mang, Friederike Arbeitsplatz
DE202012002382U1 (de) 2012-03-07 2012-05-14 Friederike Mang Anbaumöbel, insbesondere für Arbeiten im Liegesitz
DE102013001183A1 (de) 2012-11-06 2014-05-22 Friederike Mang Kombinationsmöbel
DE202014008392U1 (de) 2014-10-21 2015-02-02 Friederike Mang Kombinationsmöbel
DE102014015514A1 (de) 2014-10-20 2016-04-21 ErgoMotion GmbH Kombinationsmöbel
DE102014015513A1 (de) 2014-10-20 2016-04-21 Friederike Mang Kombinationsmöbel

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USD690974S1 (en) 2012-01-27 2013-10-08 Albert R. Pollack Seat structure
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USD789105S1 (en) 2015-09-18 2017-06-13 Sv Tool Corporation Ergonomic chair
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US10575649B2 (en) 2017-06-09 2020-03-03 Mead Timothy Pelletier Fastenerless ergonomic knee rest unitary construction chair
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IT201800002761U1 (it) * 2018-06-14 2019-12-14 Poltroncina per ufficio con schienale e sedile mobili in sincronia.
JP7043365B2 (ja) * 2018-08-06 2022-03-29 本田技研工業株式会社 車両
US11717079B2 (en) * 2020-11-16 2023-08-08 CKnapp Sales, Inc. Methods and apparatus to secure a keyboard with a multi-axis positionable tray
JP2023024837A (ja) * 2021-08-07 2023-02-17 瑞代 西野 椅子及び机
US11844434B2 (en) * 2021-08-31 2023-12-19 Ruth CATAN Ergonomic chairs supporting asymmetric leg configurations
JP1767233S (ja) * 2022-07-18 2024-04-02 モジュール式コンピューターワークステーション
US12336644B2 (en) 2022-11-14 2025-06-24 Tyler Alexander Milewski Workstation
PL131193U1 (pl) * 2023-01-14 2024-07-15 Arkadiusz Kołodziejczyk Fotel do pracy, zwłaszcza z komputerem

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DE202011001311U1 (de) 2011-01-11 2011-03-17 Mang, Friederike Arbeitsplatz
DE202012002382U1 (de) 2012-03-07 2012-05-14 Friederike Mang Anbaumöbel, insbesondere für Arbeiten im Liegesitz
DE102013001183A1 (de) 2012-11-06 2014-05-22 Friederike Mang Kombinationsmöbel
DE102013001183B4 (de) * 2012-11-06 2015-11-12 Friederike Mang Kombinationsmöbel
DE102014015514A1 (de) 2014-10-20 2016-04-21 ErgoMotion GmbH Kombinationsmöbel
DE102014015513A1 (de) 2014-10-20 2016-04-21 Friederike Mang Kombinationsmöbel
DE202014008392U1 (de) 2014-10-21 2015-02-02 Friederike Mang Kombinationsmöbel

Also Published As

Publication number Publication date
CA2550385A1 (fr) 2007-12-05
CA2590416A1 (fr) 2007-12-05
US20070278834A1 (en) 2007-12-06
CA2671910A1 (fr) 2008-12-04

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