US20010013569A1 - Inclinable support for chair - Google Patents

Inclinable support for chair Download PDF

Info

Publication number
US20010013569A1
US20010013569A1 US09/299,623 US29962399A US2001013569A1 US 20010013569 A1 US20010013569 A1 US 20010013569A1 US 29962399 A US29962399 A US 29962399A US 2001013569 A1 US2001013569 A1 US 2001013569A1
Authority
US
United States
Prior art keywords
spring
support according
mobile
support
chair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US09/299,623
Other languages
English (en)
Inventor
Armando Donati
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Donati SpA
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to DONATI SPA reassignment DONATI SPA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DONATI, ARMANDO
Publication of US20010013569A1 publication Critical patent/US20010013569A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • A47C1/02—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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs

Definitions

  • the invention relates to an inclinable support for oscillating or synchronized chairs and armchairs, having a device for regulating the suspension and the inclination.
  • chair also is intended to designate armchairs, in particular office armchairs, and any similar furniture.
  • syncronized is applied to chairs and armchairs in which the angle of oscillation of the back is different from that of the seat; the term oscillating is applied to chairs and armchairs in which seat and back tilt with the same angle.
  • a further purpose of the present invention is to also allow the user to regulate the starting position of the inclination.
  • the inclined surface(s) of the said regulating device for setting the spring are flat.
  • the setting regulation device of the spring comprises two opposed wedges with at least one inclined surface each, joined to the said fixed part or to the said mobile part.
  • the two wedges present two inclined surfaces each, joined to the fixed part and to the mobile part respectively.
  • the inclined surfaces present a mirror image angle of inclination about a common reference line.
  • the support further comprises a housing to which the back is fixed securely.
  • the inclination spring acts on the back through the said housing directly or through an oscillating arm rigidly connected to the said housing and the oscillating arm comprises a slot which can be engaged by a spacer to set the zero position of the chair.
  • the spacer is endowed with a nose to engage the slot and with side prominences to engage the oscillating arm in two positions.
  • the inclinable support for oscillating or syncronized chairs according to the present invention presents the following advantages: the regulation of the setting of the spring can be fine adjusted due to the reducing effect of the wedge mechanism on the rotation imparted to the setting screw of said mechanism.
  • the screw thread can be coarse pitched to support the stress imposed by the spring and by use; at the same time, the reduction (in mechanical effort) introduced by the inclined surfaces of the wedge mechanism reduces the effort which must be applied manually to the screw to effect the operation of regulation of the setting of the spring.
  • the presence of the spacer acting on the oscillating arm allows to have two starting positions (zero positions) for the oscillation of the chair.
  • the position with the nose of said spacer in a slot of the oscillating arm results in an advanced position of the back; the support of the said nose on the side of the oscillating arm results in a more reclined position of the back as the starting position for the oscillation of all the chair.
  • FIG. 1 is a plan view of the complete mechanism of the chair, having a fine regulation of the setting of the spring and the regulation of the starting point of the oscillation;
  • FIG. 2 is the II-II section of FIG. 1 with the wedge device in the least-loaded position and the back advanced;
  • FIG. 3 is the II-II section of FIG. 1 with the wedge device in the maximum-loaded position and the back slightly reclined.
  • the support for the chair comprises a fork 1 , equipped with base 2 of attachment to the back (not shown).
  • the fork oscillates on the transversal pivot 3 by means of the rotation supports 4 with which the body 5 of the support is provided.
  • An arm 6 oscillating within the body 5 is rigidly connected to pivot 3 , and carries a reaction pivot 7 , shown in FIGS. 2 and 3, for spring 8 that regulates the effort necessary for the inclination of the chair.
  • a stop pivot 9 on arm 6 located on the part most distant from the axis of rotation of arm 6 .
  • Pivot 9 has the function of engaging rack 28 (FIG. 1), commanded from the outside by means of lever 29 and rod 30 to stop the chair in the desired inclined position.
  • FIG. 2 also shows a bush 35 joined to reaction pivot 7 and acting as a housing for the mobile extremity 36 of spring 8 .
  • the spring 8 is joined at the other extremity to the regulation device by means of the spring adjuster according to the present invention.
  • Such device has a fixed part 13 rigidly connected with body 5 and a mobile part 10 on which an extremity of spring 8 is coupled.
  • the fixed part or the mobile, or both parts has a surface 14 inclined with respect to the axis of spring 8 (which coincides with the right portion of the II-II section line outlined in FIG. 1).
  • a wedge 12 also having an inclined complementary surface matching the surface of the fixed and/or mobile part.
  • the wedge or wedges are mobile along an axis that is substantially perpendicular to the axis of spring 8 . Due to the surface 14 the movement of wedges 12 is converted to the movement of mobile part 10 along the axis of spring 8 .
  • wedges 12 are slidable on inclined and converging surfaces 14 of fixed part 13 and mobile part 10 under the action of screw 15 , which is operated from the outside via the knob 16 and rotating rod 17 .
  • the inclined surfaces provide a mirror-image angle of inclination with respect to a common reference line.
  • the angle a of inclination of the surfaces is between 85 and 65 degrees and is preferably around 80 degrees.
  • the device according to the invention comprises means also to regulate the so-called “zero position,” or starting position, of the inclination.
  • the oscillating arm 6 is engaged by means of the slot 18 with the nose 19 of a spacer 20 .
  • the nose 19 has a side prominence 25 and is transversely mobile on pivot 21 , operated from the outside by means of lever 22 .
  • the spacer is in contact with shelf 26 of the boss 27 attached to the chair support column 24 .
  • lever 22 By means of pivot 21 , lever 22 also commands the finger lever 23 driving the damper, adjustable in height, located in the chair support column 24 .
  • the support mechanism for chair presents, finally, L-shaped irons 31 for fixing the seat (not shown). Irons 31 are coupled in an oscillating way via pivots 32 and 33 to fork 1 and to body 5 ; pivot 33 is controlled from the outside via knob M.
  • the L-shaped irons have slots 34 to allow the horizontal shift of the seat with respect to the back.
  • the support according to the invention operates as follows: the user, acting on knob 16 and, therefore, on screw 15 brings together or separates wedges 12 of the mechanism; the position of reaction of spring 8 is thus consequently modified, changing the elastic characteristics and therefore the setting. More particularly, in the configuration shown in FIGS. 1 and 2 the wedges 12 are at their maximum distance and spring 8 is in its widest configuration (i.e. set for the least effort of oscillation). Rotating knob 16 and screw 17 two wedges 12 are drawn together and simultaneously mobile part 10 is moved away from fixed part 13 , compressing spring 8 as shown in FIG. 3. In this configuration spring 8 is set for a greater oscillation force.
  • the angle ⁇ of the inclination of the surfaces can reach 85 degrees giving a strong amplification effect of the fineness of regulation and smootness of actuation.
  • the spacer has two positions: the first, corresponding to FIGS. 1 and 2, where the nose 19 is housed in the slot 18 in oscillating arm 6 , and a second position, visible in FIG. 3, where nose 19 leans externally against said arm 6 , after a translation of pivot 21 toward lever 22 .
  • the second position is attainable after the user has inclined the chair so as to allow the disengagement of nose 19 from slot 18 and permit the translation of pivot 21 .
  • the inclined surfaces 14 could be achieved by constant curvature, cylindrical, or varying, elliptical or with other types of curve, for determine a variation in behavior on the basis of the position of the interposed wedges, with the object of compensating the increase of the elastic reaction of the spring during compression.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US09/299,623 1998-04-27 1999-04-27 Inclinable support for chair Abandoned US20010013569A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI98A000894 1998-04-27
IT1998MI000894A IT1306230B1 (it) 1998-04-27 1998-04-27 Supporto inclinabile per sedia

Publications (1)

Publication Number Publication Date
US20010013569A1 true US20010013569A1 (en) 2001-08-16

Family

ID=11379898

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/299,623 Abandoned US20010013569A1 (en) 1998-04-27 1999-04-27 Inclinable support for chair

Country Status (3)

Country Link
US (1) US20010013569A1 (de)
EP (1) EP0956793A3 (de)
IT (1) IT1306230B1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050104429A1 (en) * 2003-10-24 2005-05-19 Ram Machine (1990) Ltd. Chair spring tension control
US20070040432A1 (en) * 2005-04-06 2007-02-22 Donati S.P.A. Synchronisation mechanism for chairs or armchairs
US20080054700A1 (en) * 2006-08-29 2008-03-06 Daniel Meidan Tilt controls for chairs
US20080252125A1 (en) * 2005-04-13 2008-10-16 Bock 1 Gmbh & Co.Kg Device for Seat Tilt Adjustment of a Chair
US20090008979A1 (en) * 2007-04-06 2009-01-08 L & P Property Management Company Adjustment device for a reclining chair
US20090008978A1 (en) * 2007-04-06 2009-01-08 L & P Property Management Company Adjustment device for adjustable chairs
US20100048192A1 (en) * 2008-08-20 2010-02-25 At&T Mobility Ii Llc Cellular Device Management
US10231545B2 (en) * 2015-10-15 2019-03-19 Co.Fe.Mo. Industrie S.R.L. Oscillation mechanism for chairs
US10813458B2 (en) 2016-07-08 2020-10-27 Co.Fe.Mo. Industrie S.R.L. Tilting mechanism for chairs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7494185B2 (en) * 2004-08-26 2009-02-24 L & P Property Management Company J-back adjustment mechanism
IT1391975B1 (it) * 2008-11-12 2012-02-02 L&P Property Man Co Dispositivo di regolazione della spinta di un meccanismo, particolarmente per sedute regolabili

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0511791Y2 (de) * 1987-08-24 1993-03-24
DE4324545C2 (de) * 1993-07-22 2003-10-16 Dauphin Friedrich W Gmbh Stuhl, insbesondere Bürostuhl

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7316453B2 (en) 2003-10-24 2008-01-08 Ram Machines (1990) Ltd. Chair spring tension control
US20050104429A1 (en) * 2003-10-24 2005-05-19 Ram Machine (1990) Ltd. Chair spring tension control
US20070040432A1 (en) * 2005-04-06 2007-02-22 Donati S.P.A. Synchronisation mechanism for chairs or armchairs
US7364233B2 (en) 2005-04-06 2008-04-29 Donati S.P.A. Synchronisation mechanism for chairs or armchairs
US20080252125A1 (en) * 2005-04-13 2008-10-16 Bock 1 Gmbh & Co.Kg Device for Seat Tilt Adjustment of a Chair
US20080054700A1 (en) * 2006-08-29 2008-03-06 Daniel Meidan Tilt controls for chairs
US7766426B2 (en) * 2006-08-29 2010-08-03 Ram Machines (1990) Ltd. Tilt controls for chairs
US7866749B2 (en) 2007-04-06 2011-01-11 L & P Property Management Company Adjustment device for a reclining chair
US20090008979A1 (en) * 2007-04-06 2009-01-08 L & P Property Management Company Adjustment device for a reclining chair
US20090008978A1 (en) * 2007-04-06 2009-01-08 L & P Property Management Company Adjustment device for adjustable chairs
US7815257B2 (en) 2007-04-06 2010-10-19 L & P Property Management Company Adjustment device for adjustable chairs
US20100048192A1 (en) * 2008-08-20 2010-02-25 At&T Mobility Ii Llc Cellular Device Management
US8498621B2 (en) 2008-08-20 2013-07-30 At&T Mobility Ii Llc Cellular device management
US8731524B2 (en) 2008-08-20 2014-05-20 At&T Mobility Ii Llc Cellular device management
US10231545B2 (en) * 2015-10-15 2019-03-19 Co.Fe.Mo. Industrie S.R.L. Oscillation mechanism for chairs
US10813458B2 (en) 2016-07-08 2020-10-27 Co.Fe.Mo. Industrie S.R.L. Tilting mechanism for chairs

Also Published As

Publication number Publication date
EP0956793A2 (de) 1999-11-17
ITMI980894A1 (it) 1999-10-27
IT1306230B1 (it) 2001-06-04
EP0956793A3 (de) 2001-01-17

Similar Documents

Publication Publication Date Title
US7281764B2 (en) Tension control mechanism for chair
EP0552219B1 (de) Einrichtung in einem verstellbaren lehnstuhl
CN102905579B (zh) 椅子的靠背用反力机构及安装有该机构的椅子
US4270797A (en) Ergonomic chair
US4695093A (en) Work chair
US4200332A (en) Adjustable chair
US6896329B2 (en) Chair, in particular office chair
US8025335B2 (en) Chair
US5683139A (en) Chair seat tilt adjustment and locking mechanism
EP2725943B1 (de) Neigungsmechanismus für einen stuhl und stuhl
JP4543362B2 (ja) シート家具、特に、事務用椅子におけるシートと背もたれの配置構造
US20070057552A1 (en) Tension adjustment mechanism for a chair
US20110074197A1 (en) Chair
US20010013569A1 (en) Inclinable support for chair
US7303233B2 (en) Height adjustable chair with rocking function
JPH0531962Y2 (de)
JP2001057918A (ja) 椅 子
GB2264862A (en) "a chair tilting mechanism"
JPH0646935A (ja) 椅子の背，座部の連動支持機構
WO2009127862A1 (en) Chair back tilt tensioning
EP3599938A1 (de) Gelenksystem für stühle
HK1090264B (en) Chair

Legal Events

Date Code Title Description
AS Assignment

Owner name: DONATI SPA, ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DONATI, ARMANDO;REEL/FRAME:009939/0133

Effective date: 19990309

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION