WO2006056051A1 - Chaise inclinable et pivotante et mecanisme associe - Google Patents

Chaise inclinable et pivotante et mecanisme associe Download PDF

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Publication number
WO2006056051A1
WO2006056051A1 PCT/CA2005/001771 CA2005001771W WO2006056051A1 WO 2006056051 A1 WO2006056051 A1 WO 2006056051A1 CA 2005001771 W CA2005001771 W CA 2005001771W WO 2006056051 A1 WO2006056051 A1 WO 2006056051A1
Authority
WO
WIPO (PCT)
Prior art keywords
chair
seat
base
tilt
outer cover
Prior art date
Application number
PCT/CA2005/001771
Other languages
English (en)
Inventor
Steve Keilhauer
Vlad Zila
Martin Bergmann
Gernot Bohmann
Harald Grundl
Original Assignee
Keilhauer (Partnership)
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 Keilhauer (Partnership) filed Critical Keilhauer (Partnership)
Priority to EP05810867A priority Critical patent/EP1827173A1/fr
Publication of WO2006056051A1 publication Critical patent/WO2006056051A1/fr

Links

Classifications

    • 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
    • A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/18—Chairs or stools with rotatable seat

Definitions

  • the invention relates to chairs, and more particularly, to chairs capable of tilting and swiveling.
  • An occupant of a chair such as an office chair, does not remain stationary throughout the course of the day. The occupant is frequently required to change position, whether to move the occupant's spatial position on the floor, or to rotate to face sideward or rearward, or to reach for an object positioned away from the occupant.
  • the base tilt also allows the occupant's feet to stabilize the chair.
  • the occupant may lose control, tilting back (and to the side) too far for the occupant to correct, which may result in the occupant either tipping the chair or falling off the seat, which may lead to injury. It would be beneficial to allow base tilting of the chair in circumscribed degrees to reduce the likelihood of rear-sideward spills.
  • tilting should be accommodated as an additional feature in harmony with other normal functions of a chair, such as swiveling and spring-based "bouncing".
  • a chair comprising a seat, a base and an elongate structure.
  • the base has legs that extend to the floor.
  • the base defines a longitudinal axis.
  • the elongate structure is connected to the seat at a first end, and to the base, and extends through the base to terminate at a second end.
  • the elongate structure comprises a pillar assembly, an outer cover housing a portion of the pillar assembly, a tilt ring, and a base portion.
  • the pillar assembly is connected to the seat at the first end,
  • the tilt ring preferably engages in part a lower portion of the outer cover.
  • the base portion is preferably connected to the tilt ring and base.
  • the base portion preferably comprises a bearing assembly.
  • the chair allows tilting and swivelling movements.
  • the pillar assembly and outer cover are preferably tiltable in any direction against the tilt ring to tilt the seat.
  • the seat is moved from an axial orientation with respect to the longitudinal axis of the base.
  • the tilt ring returns the pillar assembly and outer cover to axial orientation.
  • the pillar assembly, the outer cover, and the tilt ring are preferably swivellable at the bearing assembly.
  • the base portion comprises a keyhole delimiter that defines a keyhole.
  • the bottom end of the pillar assembly engages the keyhole, which limits the degrees of tilt permitted.
  • the keyhole may be shaped:
  • the chair further comprises a clocking system.
  • the clocking system allows the swivelling parts, namely the pillar assembly, the outer cover, the tilt ring and the tilt delimiter, to swivel together. This allows the orientation of the keyhole to be maintained in the course of rotating the seat.
  • the bearing assembly preferably comprises at least one race bearing, preferably a pair of race bearings.
  • the first race bearing is preferably positioned in an upper portion of the base portion, while the second race bearing is preferably positioned in a lower portion of the base portion.
  • the bearing assembly assists the swivelling of the chair.
  • the chair is capable of swivelling in tilted and untilted modes.
  • the tilt ring preferably comprises a flexible ring capable of elastic displacement when tilting force is applied.
  • the chair may also have "spring” or "bounce” movement.
  • the pillar assembly may further comprise a spring system to allow the springing or bouncing movement of the seat.
  • the spring system preferably has starting and ending positions along a second longitudinal axis defined by the pillar assembly and the outer cover of the structure.
  • the spring “system” comprises two elements: a cylinder and a spring.
  • the cylinder may be a pneumatic cylinder.
  • the spring may be a coil spring, such as a variable rate coil spring.
  • the spring system is preferably integrated with the pillar assembly, which may be understood as a "spring pillar assembly”.
  • the seat may include a back, and the base may include wheels on the legs.
  • FIG. 1 shows an exploded view of the mechanism, according to the preferred embodiment.
  • Fig. 2 shows an assembled view of the mechanism in Fig. 1 , with outer cover 6 shown, but with legs 5 truncated.
  • Figs. 3A-3F show assembly diagrams of the mechanism (in section) in the preferred order of assembly:
  • Fig. 4 shows a detailed view of the base 4 and bearing components (in section).
  • Fig. 5 shows a sectional view of the mechanism 1 in tilt orientation.
  • Fig. 6A shows a detailed view of area 32 of the cross-section shown in Fig. 7C.
  • Fig. 6B shows a detailed view of area 30 of the cross-section shown in Fig. 7B.
  • Fig. 6C shows a detailed view of area 31 of the cross-section shown in Fig. 7D.
  • Fig. 7A shows a cross-section through line H-H of Fig. 5, showing keyhole ring 18.
  • Fig. 7B shows a cross-section through line G-G of Fig. 5, showing coil spring 10 and spring locator 11.
  • Fig. 7C shows a cross-section through line E-E of Fig. 5, showing central post 12 features.
  • Fig. 7D shows a cross-section through line B-B of Fig. 5, showing roller 23" and roller holder 24'.
  • Fig. 8A shows a front perspective view of the coil spring 10 and base 4 components.
  • Fig. 8B shows a sectional view of the coil spring 10 and base 4 components in Fig. 8, also showing roller 23'.
  • the invention provides a tilting and swiveling chair.
  • the mechanism 1 is intended for use in a chair, especially a chair of the type commonly used in offices (having a seat and seat back, the seat being positioned over a column, the column terminating in a branched base with legs).
  • the mechanism 1 is preferably an elongate structure, which takes the place of the seat column. As shown in Figs. 1 and 2, the elongate structure has two ends 2, 3.
  • the first end 2 is connected to the seat, preferably by means of a tapered fit, and the second end 3 extends through the base 4 to terminate slightly above the floor.
  • the legs 5 may include wheels, such as conventional office chair casters (not shown).
  • the mechanism 1 allows three basic occupant motions:
  • the mechanism 1 is adapted to perform all of the above motions.
  • the mechanism comprises means for limiting the amount of tilt permitted (independent of swivel). The functional aspects of the mechanism 1 are now described.
  • the mechanism 1 allows swiveling with respect to the base 4.
  • a bearing ring (such as a race bearing) is provided to facilitate the swiveling by reducing friction between swivelling and non-swivelling parts of the mechanism 1.
  • a pair of bearing rings 16, 20 is provided, one each at upper and lower ends of the base 4.
  • the mechanism 1 swivels at the bearing rings 16, 20 while the base 4 remains stationary.
  • the mechanism 1 is preferably capable of swiveling in tilted (as shown in Fig. 5) or untilted state (as shown in Fig. 2).
  • the bearing rings 16, 20 reduce friction to facilitate smooth rotation of the mechanism about the axis 34 defined by the base 4.
  • the mechanism 1 is preferably constructed so that the swiveling parts turn together (at the same rate of rotation and to the same degree). Rotation is transferred between adjacent parts by means of clocking and locating features.
  • a clocking bushing 26 is preferably provided between the pneumatic cylinder 7 and the cylinder extruded tube 8.
  • the bushing 26 preferably has a tab-in-groove fit with the cylinder extruded tube 8.
  • the bushing 26 has the function of transferring swivel motion to the bearing rings 16, 20.
  • the outer cover 6 preferably rotates with its interior parts, as shown in Fig. 5.
  • the cylinder extruded tube 8 threads to a predetermined stop to align the parts to a rubber tilt ring 13. Furthermore, the tilt ring 13, bottom post 14 and bearing cup 17 align with the keyhole delimiter ring 18.
  • pneumatic cylinder 7 contains a locating feature 35 to align the seat (not shown) attached at the first end 2.
  • the mechanism 1 preferably allows "bounce" motion along the longitudinal axis 33 defined by the tilting parts of the mechanism 1.
  • two parts supply the bounce action: the cylinder extruded tube 8 and the coil spring 10.
  • the bounce moves the seat up and down to provide increased comfort and support and aid spinal alignment.
  • the longitudinal axis 33 moves in unison with the axis of the occupant's spine (i.e. the occupant's center of gravity moves with the chair). This has the effect of reducing gravitational pressure on the occupant's spine.
  • the cylinder extruded tube 8 preferably moves up and down within the central post 12, assisted by upper and lower rollers 23, 23'.
  • the coil spring 10 is preferably acted upon by a spring locator 11.
  • the coil spring 10 may be a variable rate coil spring that compresses variably with the occupant's weight (i.e. compression becomes progressively more difficult as load is applied).
  • the height of the seat can also be adjusted by extending or compressing the pneumatic cylinder 7 inside the tube 8.
  • the height of the seat, set by the pneumatic adjustment does not affect the bounce range of the cylinder extruded tube 8, which operates independently.
  • a preferred range of bounce travel is approximately 3 inches.
  • Means may optionally be provided to adjust the bounce resistance or to permit a + or - range of travel (not shown).
  • the mechanism 1 (in loaded or unloaded state) allows tilting.
  • the axis 33 of the tilting parts of the mechanism 1 is substantially co-linear with the axis 34 of the base 4.
  • the cylinder 7, the tube 8, the coil spring 10, the outer cover 6, the central post 12, and bottom post 14 all tilt together with their internal parts.
  • the lower shoulders of the outer cover 6 (housing the central post 12, cylinder 7, tube 8, and coil spring 10) and the attached bottom post 14 bear upon a flexible tilt ring 13.
  • the flexible ring 13 and bearing cup 17 remain stationary with the base 4, however the flexible material of the ring 13 elastically displaces to accommodate the tilting parts.
  • the flexible tilt ring 13 has several functions. It cushions and supports the outer cover 6 and bottom post 14 when tilted.
  • the ring 13 provides resistance against tilting, and resistance will increase depending on load.
  • the ring 13 may be made of rubber or synthetic rubber, or similar elastic material, such as silicone. The skilled person will appreciate that the shore hardness of the flexible material used in the ring can be adjusted to modify the resistance.
  • the ring 13 also gently restores the tilting parts of the mechanism 1 back into vertical alignment with the base 4 when the tilt pressure is removed.
  • the ring 13 flexibly bonds the bottom post 14 to the bearing cup 17.
  • a keyhole delimiter ring 18 is preferably provided in the base 4 of the mechanism 1. As shown in Fig. 7A, the shape of the interior of the keyhole ring 18 is preferably slightly eccentric.
  • the aperture of the keyhole delimiter ring 18 preferably has a broader "Back" portion and a narrower “Front” portion. (“Front” and “Back” refer to the occupant's facing direction. Note, however, that the "Back" portion of the aperture governs the occupant's forward tilt motions, while the narrower “Front” portion of the aperture governs the occupant's backward tilt motions.) Sloped edges are preferably provided between the front and back portions.
  • the keyhole ring 18 circumscribes where the bottom post 14 (connected with the other tilting parts of the mechanism) may tilt. Front and front-sideward tilt movements are least restricted (to allow reaching motions). Rearward motions are permitted, but rear-sideward motions are nudged into rearward direction to permit relaxation tilt postures, while preventing rear-sideward spills.
  • the keyhole delimiter ring permits approximately 7° forward tilt, 10° backward tilt, 7° sideward tilt, and 5° rear-sideward tilt.
  • the keyhole delimiter ring 18 preferably moves with the swiveling of the chair, so that the frontward orientation is maintained relative to the occupant in the seat.
  • the function of the keyhole delimiter ring 18 is not affected by downward motion of the cylinder extruded tube 8 and coil spring 10.
  • FIGs. 1-4 the preferred construction of the mechanism 1 will now be described.
  • Figs. 3A-3F illustrate the assembly of the mechanism, step by step.
  • the central post 12 is provided, which consists of the main internal support member for the mechanism 1.
  • the central post 12 is a hollow, tapered body having a wide top section tapering to a narrower mid-section, broadening again at the bottom.
  • the bottom section is preferably provided with a threaded exterior portion adapted for threaded connection to the bottom post 14, as shown in Figs. 3C and 8B.
  • the central post is preferably constructed of cast aluminum.
  • the central post 12 houses the lower rollers 23" in roller holders 24". There are preferably 3 rollers arranged as shown in Fig. 7D. Upper rollers 23 in roller holders 24 are also housed in the central post 12, as shown in Fig. 3B. The upper and lower rollers 23, 23' are preferably constructed of a roller tube positioned over a dowel pin 28 as shown in Fig. 6C.
  • the clocking bushing liner 27 is snapped on to the clocking bushing 26 on the pneumatic cylinder 7.
  • This assembly is next installed in the cylinder extruded tube 8 (sandwiching upper bushing 9, which is used to guide the cylinder 7 and reduce friction).
  • the flange 25 is slid on the tube 8 and rotated 180° to lock the flange 25 in place.
  • the tube 8 is positioned within the cavity defined in the central post 12 and supported within rollers 23.
  • the cylinder 7 and tube 8 extend from the top of the mechanism 1 to a point within the base 4.
  • the spring locators 11 are attached to flange 25.
  • the central post 12 is threadably connected to a permanently- bonded assembly consisting of the flexible tilt ring 13 and bottom post 14 and bearing cup 17.
  • a set screw 29 is screwed to the central post 12 to prevent unthreading of the threaded parts.
  • the coil spring 10 sits atop the top part of the bottom post 14.
  • the bearing cups 17, 21 sandwich the keyhole delimiter ring 18.
  • the bearings 16, 20 are preloaded due to the height of the keyhole delimiter 18. This sandwich has the effect of reducing the side-to-side "play", while maintaining the ability to swivel independently of the base 4.
  • the keyhole ring 18 is preferably constructed of aluminum.
  • the sandwich is preferably held together using socket head cap screws 22 (also shown in Figs. 1 and 5).
  • An outer cover 6 caps the coil spring 10 and central post 12, as shown in Fig. 3F.
  • the outer cover 6 is preferably of translucent polypropylene, to allow the coil spring to be visible by the occupant.
  • the cover 6 is preferably attached using molded snap clips.
  • the base 4 preferably includes branched legs 5 as shown in Fig. 1. Wheels may be provided (not shown).

Landscapes

  • Chairs Characterized By Structure (AREA)

Abstract

L'invention concerne une chaise et un mécanisme (1) associé permettant à l'utilisateur d'effectuer des mouvements de pivotement, de suspension et d'inclinaison. La chaise comprend une structure support allongée se situant entre le siège et la base (4), ladite structure comprenant un ensemble (7, 8, 10, 12, 14) pilier à ressort relié au siège, une enveloppe extérieure (6) qui contient une partie de l'ensemble pilier, une bague (13) d'inclinaison élastique entrant en contact avec la partie inférieure de l'enveloppe extérieure, et une partie de base reliée à la bague d'inclinaison et à la base. La partie de base comprend un ensemble roulement (16) relié à la bague d'inclinaison de façon à permettre à la structure support entière de pivoter, quel que soit le degré d'inclinaison; et un élément de limitation (18) verrouillable qui interagit avec l'extrémité inférieure de l'ensemble pilier (14) pour limiter sélectivement le degré d'inclinaison par rapport au siège. L'ensemble pilier à ressort et l'enveloppe extérieure sont inclinables dans n'importe quelle direction contre la bague d'inclinaison, cette dernière ramenant lesdits ensemble et enveloppe extérieure à la verticale en l'absence d'une force d'inclinaison.
PCT/CA2005/001771 2004-11-25 2005-11-22 Chaise inclinable et pivotante et mecanisme associe WO2006056051A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05810867A EP1827173A1 (fr) 2004-11-25 2005-11-22 Chaise inclinable et pivotante et mecanisme associe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002488519A CA2488519A1 (fr) 2004-11-25 2004-11-25 Fauteuil basculant et pivotant et mecanisme connexe
CA2,488,519 2004-11-25

Publications (1)

Publication Number Publication Date
WO2006056051A1 true WO2006056051A1 (fr) 2006-06-01

Family

ID=36481095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2005/001771 WO2006056051A1 (fr) 2004-11-25 2005-11-22 Chaise inclinable et pivotante et mecanisme associe

Country Status (3)

Country Link
EP (1) EP1827173A1 (fr)
CA (1) CA2488519A1 (fr)
WO (1) WO2006056051A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011111946A2 (fr) * 2010-03-09 2011-09-15 Lee Sang-Ho Dispositif de fixation de roulettes de fauteuil
WO2014060121A1 (fr) * 2012-10-19 2014-04-24 Glöckl Josef Siège muni d'une colonne pendulaire et d'un dispositif de sécurité
CN110022724A (zh) * 2016-12-20 2019-07-16 国誉株式会社 椅子和椅子的罩构件

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106724176A (zh) * 2017-01-09 2017-05-31 罗双林 一种学生多媒体学习矫姿桌椅及矫姿方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5524967A (en) * 1992-03-27 1996-06-11 Gloeckl; Josef Active dynamic seat
US5921628A (en) * 1995-02-08 1999-07-13 Glockl; Josef Pendulating stool
US6106064A (en) * 1996-01-30 2000-08-22 Claiteal Pty. Ltd. Swivelling and tilting chair
US6601818B1 (en) * 2000-10-12 2003-08-05 Lord Corporation Tilting mount with integral flange

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5524967A (en) * 1992-03-27 1996-06-11 Gloeckl; Josef Active dynamic seat
US5921628A (en) * 1995-02-08 1999-07-13 Glockl; Josef Pendulating stool
US6106064A (en) * 1996-01-30 2000-08-22 Claiteal Pty. Ltd. Swivelling and tilting chair
US6601818B1 (en) * 2000-10-12 2003-08-05 Lord Corporation Tilting mount with integral flange

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011111946A2 (fr) * 2010-03-09 2011-09-15 Lee Sang-Ho Dispositif de fixation de roulettes de fauteuil
WO2011111946A3 (fr) * 2010-03-09 2012-02-02 Lee Sang-Ho Dispositif de fixation de roulettes de fauteuil
WO2014060121A1 (fr) * 2012-10-19 2014-04-24 Glöckl Josef Siège muni d'une colonne pendulaire et d'un dispositif de sécurité
US9526341B2 (en) 2012-10-19 2016-12-27 Aeris Gmbh Seating having a pendulum column and safety device
CN110022724A (zh) * 2016-12-20 2019-07-16 国誉株式会社 椅子和椅子的罩构件
CN110022724B (zh) * 2016-12-20 2022-11-11 国誉株式会社 椅子和椅子的罩构件

Also Published As

Publication number Publication date
CA2488519A1 (fr) 2006-05-25
EP1827173A1 (fr) 2007-09-05

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