EP0587536A1 - Mécanisme pour le réglage en hauteur du dossier des chaises - Google Patents

Mécanisme pour le réglage en hauteur du dossier des chaises Download PDF

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Publication number
EP0587536A1
EP0587536A1 EP93830257A EP93830257A EP0587536A1 EP 0587536 A1 EP0587536 A1 EP 0587536A1 EP 93830257 A EP93830257 A EP 93830257A EP 93830257 A EP93830257 A EP 93830257A EP 0587536 A1 EP0587536 A1 EP 0587536A1
Authority
EP
European Patent Office
Prior art keywords
height
backrest
rack
plate
stop pin
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.)
Withdrawn
Application number
EP93830257A
Other languages
German (de)
English (en)
French (fr)
Inventor
Sergio Moreschi
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.)
Cofemo SpA
Original Assignee
Cofemo SpA
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 Cofemo SpA filed Critical Cofemo SpA
Publication of EP0587536A1 publication Critical patent/EP0587536A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/402—Supports for the head or the back for the back adjustable in height

Definitions

  • the present invention relates to a mechanism for adjusting the height and locking the back of the chairs. It finds its application in the field of office chairs having an applied and movable backrest along an upright.
  • the object of the present invention is to provide a particularly simple and effective mechanism for adjusting the height of the back of the chairs, consisting only of two elements, of minimal bulk, which makes it possible not to complicate the installation of the back, easily accessible and maneuverable when you want to change the positions of the backrest.
  • the mechanism which is the subject of the present invention is essentially in accordance with claim 1. It therefore basically consists of a rack and pinion toothing in a vertical direction, executed in the support support of the seat, in a locking / unlocking handle mounted on the sitting and moving with it along the upright, and comprising a stud which selectively engages in the rack teeth to obtain different positions in height of the backrest.
  • No. 10 indicates the amount of an office chair which receives a sliding plate 11 to which the backrest - not shown - of the chair itself is fixed. Normally, the upright extends upwards from the underside of the seat: the plate 11 which supports the backrest includes guides 12 coupled to the sides of the upright 10.
  • a toothed rack 13 was made along a vertical side of an oblong slot 14 which extends along the height of the upright.
  • On the back support plate 11 is mounted at 15 ′ on a pivot an oscillating lever 15 for locking / unlocking.
  • This oscillating lever 15 has an upper end provided with a stop pin 16, and a lower end 17 to be gripped for manual locking / unlocking maneuver, directly or indirectly by means of an extension rod.
  • the stud 16 of the lever 15 passes through an opening 18 made in the plate 11, it slides in the vertical slot 14 and engages in the rack teeth 13.
  • a spring 19 secured on one side to the lever 15, and on the other side to the plate 11, keeps the lever normally moved so that that its stop pin 16 constantly engages in the toothing 13.
  • the rack teeth 13 makes it possible to adjust the height of the plate 11 and therefore the backrest, along the support upright 10 in as many positions as there are teeth in the rack. To make this adjustment, it suffices to move the lever 16 so as to distance and disengage the stud from the toothing 13, plus slide the plate 11 with the backrest on the upright 10 until the desired height is obtained; at this time, it is left that the stud 16 of the lever 15, through the action of the spring 19, engages in the teeth of the rack at the corresponding level.
  • the operation is practical and simple to execute; the joystick is easily accessible and its location has no influence on the ordinary structure and mounting of the backrest.

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP93830257A 1992-09-09 1993-06-10 Mécanisme pour le réglage en hauteur du dossier des chaises Withdrawn EP0587536A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBS920084U 1992-09-09
IT92BS000084U IT228484Y1 (it) 1992-09-09 1992-09-09 Dispositivo per il posizionamento in altezza dello schienale di sedie

Publications (1)

Publication Number Publication Date
EP0587536A1 true EP0587536A1 (fr) 1994-03-16

Family

ID=11344902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93830257A Withdrawn EP0587536A1 (fr) 1992-09-09 1993-06-10 Mécanisme pour le réglage en hauteur du dossier des chaises

Country Status (3)

Country Link
EP (1) EP0587536A1 (it)
CA (1) CA2098341A1 (it)
IT (1) IT228484Y1 (it)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0958764A1 (en) * 1998-05-22 1999-11-24 Unit Press Limited Slider mechanism
US6238000B1 (en) 1998-02-04 2001-05-29 Unit Press Limited Mechanism for chair
AU738653B2 (en) * 1996-11-18 2001-09-20 Klasse Pty Ltd Height adjustor means
US6619745B2 (en) 1999-12-03 2003-09-16 Unit Press Limited Connection assembly for a chair back

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5725278A (en) * 1996-10-03 1998-03-10 Itw Plastiglide Chair back height adjuster

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036525A (en) * 1976-04-08 1977-07-19 Gf Business Equipment, Inc. Backrest adjustment mechanism
US4384742A (en) * 1981-03-11 1983-05-24 Haworth, Inc. Height adjusting mechanism for chair back

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036525A (en) * 1976-04-08 1977-07-19 Gf Business Equipment, Inc. Backrest adjustment mechanism
US4384742A (en) * 1981-03-11 1983-05-24 Haworth, Inc. Height adjusting mechanism for chair back

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU738653B2 (en) * 1996-11-18 2001-09-20 Klasse Pty Ltd Height adjustor means
US6238000B1 (en) 1998-02-04 2001-05-29 Unit Press Limited Mechanism for chair
EP0958764A1 (en) * 1998-05-22 1999-11-24 Unit Press Limited Slider mechanism
US6273384B1 (en) 1998-05-22 2001-08-14 Unit Press Limited Chair back adjustment mechanism
US6619745B2 (en) 1999-12-03 2003-09-16 Unit Press Limited Connection assembly for a chair back

Also Published As

Publication number Publication date
ITBS920084U1 (it) 1994-03-09
ITBS920084V0 (it) 1992-09-09
IT228484Y1 (it) 1998-02-19
CA2098341A1 (fr) 1994-03-10

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