IL103482A - Tilting mechanism for a chair - Google Patents

Tilting mechanism for a chair

Info

Publication number
IL103482A
IL103482A IL10348292A IL10348292A IL103482A IL 103482 A IL103482 A IL 103482A IL 10348292 A IL10348292 A IL 10348292A IL 10348292 A IL10348292 A IL 10348292A IL 103482 A IL103482 A IL 103482A
Authority
IL
Israel
Prior art keywords
seat
shaft
back support
frame
chair
Prior art date
Application number
IL10348292A
Other languages
Hebrew (he)
Other versions
IL103482A0 (en
Original Assignee
Ring Mekanikk As
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 Ring Mekanikk As filed Critical Ring Mekanikk As
Priority to US07/966,310 priority Critical patent/US5310071A/en
Publication of IL103482A0 publication Critical patent/IL103482A0/en
Publication of IL103482A publication Critical patent/IL103482A/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—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

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

Mechanism for a chair, especially an office chair, comprising a biased back support (5) and a seat (4) being synchronously movable with the back support (5), the spring (2) for the seat (4) as well as for the back support (3) being arranged in the journalled axis (2) for the back support (3) in the frame (1) of the mechanism, the seat (4) being journalled near the front edge, to the frame (1) with a shaft (6) being arranged horizontally and vertically in a distance from the journalling axis (2) of the back support, the seat (4) being journally connected with a shaft (7) on a support arm (3) to which the back support (5) is connected by means of a connection piece (9) by which the difference between the rotation radius around the shaft (7) and the radius of the rotation of the seat (4) around the shaft (6), is compensated. [WO9309698A1]

Description

TILTING MECHANISM FOR A CHAIR The present invention is related to a tilting mechanism for a according to the preamble of the Tilting mechanism for especially for office are available in a number of different partly for tilting only of the back portion of the partly for tilting of the seat and the back portion Synchronous tilting of seat and back portion partly is achieved by a spring for the seat and a spring for the back portion whereas recently developments are found where seat and back portion are tilted synchronously with only one Even if the tilting of the seat and the back portion is performed the seat does not necessarily maintain its position in relation to the back portion during the but the angle between the seat and the back portion to the contrary is changed in dependency of the tilting angle of the back It tial for the comfort of a chair to provide a desired angle relationship between the seat and the back portion in all different positions of the back To achieve such a tilting movement both of the back portion and the seat and back portion both are journalled on their own horizontal tilting The geometrical such as the arrangement of these two axis in relation to each horizontally as well as and the ment and the shape of the connection between the seat and the back are crucial for the relative tilting movements of the seat and the back With the tilting mechanism according to the present relative movements between seat and back portion are achieved which ensures that the so called stripping effect is this means that the rear portion of the seat is moved so much downwards in relation to the back portion when this is tilted that shirts are pulled up from This effect is achieved additionally to the fact that the front edge of the seat is maintained substantially in the same position and that there is provided a possibility of adjustment of the arrangement of the seat towards the front and towards the rear of on the The only Figure of the drawing discloses schematically a side view of a tilting mechanism according to the present invention where one tilting position of the mechanism is disclosed with dotted The frame 1 of the mechanism is secured to a chair base and rotatable around the axis In the frame is arranged is arranged a spring 2 between the frame 1 and an arm 3 protruding outwards and on which a back support is such as by a nut The arm 3 is moved against the o force of the spring when a user leans backwards and thereby presses the back support backwards and turning around the axis The seat 4 is journalled around a shaft 6 in the front portion of the frame The shaft 6 may be connected with the frame may be biased in relation to the frame or may be adjustable in relation to the The seat 4 is connected with the shaft 6 in such a way that the seat may be displaced forwards and backwards as the shaft 6 is sliding in guidings Correspondingly the rear portion of the frame also is o journalled along the shaft 7 in a guiding whereby the shaft 7 may be locked to the guiding such as by a The shaft 7 is connected with the seat 4 by a middle piece The middle piece 9 may be fixedly secured to the seat 4 and flexible such that it can turned around the shaft On the other hand the middle piece 9 may be a short arm journalled to the shaft 7 and also journally secured to the seat By means of the middle piece the back portion 5 and the seat 4 may be tilted around the axis of the spring 2 and the axis of the shaft 6 respectively as the displacement between the seat and the arm 3 will be adjusted by the flexibility of the flexible middle piece 9 as disclosed or by a rigid middle insufficientOCRQuality

Claims (4)

- 3 - 103482/2 P a t e n t C l a i m s
1. Mechanism for a chair especially an office chair, comprising a biased back support (5) and a seat (4) being synchronously moveable with the back support (5), the spring (2) for the seat (4) as well as for the back support (3) being arranged a journalled axis (2) for the back support (3) in the frame (1) of the mechanism, the seat (4) being journalled near the front edge, to the frame (1) with a shaft (6) being arranged horizontally and vertically in a distance from the journalling axis (2) of the back support, the seat (4) being journally connected with the shaft (7) on a support arm (3) to which the back support (5) is connected, CHARACTERIZED IN the support arm (3) being connected with the back support (5) by means of a flexible connection piece (9) by which the difference between the rotation radius around the shaft (7) and the rotation radius for the seat (4) around the shaft (6), is compensated.
2. Mechanism according to claim 1, CHARACTERIZED IN the seat (4) being displaceable in and out in relation to the frame (1) in that the shaft (6) connected with the front portion of the frame (1) is displaceable in a guiding (11) secured to the front portion of the sea (4) and the shaft (7) being displaceable in a guiding (8) secured to the support arm ( 3 ) .
3. Mechanism according to claims 1-2, CHARACTERIZED IN the front shaft (6) on the frame (1) being vertically adjustable for adjusting the height of the seat.
4. Mechanism according to claims 1-2, CHARACTERIZED IN the front shaft (6) of the frame (3) being vertically biased . AGENT FOR APPLICANT
IL10348292A 1991-10-28 1992-10-21 Tilting mechanism for a chair IL103482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/966,310 US5310071A (en) 1991-10-28 1992-10-26 Dual-purpose food container/building block element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO914488A NO175961C (en) 1991-11-15 1991-11-15 Trust Hardware

Publications (2)

Publication Number Publication Date
IL103482A0 IL103482A0 (en) 1993-03-15
IL103482A true IL103482A (en) 1996-10-16

Family

ID=19894603

Family Applications (1)

Application Number Title Priority Date Filing Date
IL10348292A IL103482A (en) 1991-10-28 1992-10-21 Tilting mechanism for a chair

Country Status (8)

Country Link
EP (1) EP0675693B1 (en)
AU (1) AU2957692A (en)
DE (1) DE69224488T2 (en)
FI (1) FI942246A0 (en)
IL (1) IL103482A (en)
NO (1) NO175961C (en)
WO (1) WO1993009698A1 (en)
ZA (1) ZA927922B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO317791B1 (en) 2002-01-04 2004-12-13 Stokke As Moving joints

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2321385A (en) * 1941-06-16 1943-06-08 Sikes Company Tilting chair
US2471024A (en) * 1946-10-04 1949-05-24 Roy A Cramer Chair with tilting back and automatically shiftable seat
CA1184108A (en) * 1984-04-09 1985-03-19 David W. Smith Suspension arrangement for a tilting chair
US4979778A (en) * 1989-01-17 1990-12-25 Brayton International, Inc. Synchrotilt chair
NO174135C (en) * 1990-09-05 1994-03-23 Staal & Stil As chair

Also Published As

Publication number Publication date
DE69224488D1 (en) 1998-03-26
AU2957692A (en) 1993-06-15
WO1993009698A1 (en) 1993-05-27
NO914488D0 (en) 1991-11-15
ZA927922B (en) 1993-06-02
NO175961B (en) 1994-10-03
FI942246A (en) 1994-05-13
NO175961C (en) 1995-01-11
DE69224488T2 (en) 1998-06-04
FI942246A0 (en) 1994-05-13
IL103482A0 (en) 1993-03-15
EP0675693B1 (en) 1998-02-18
EP0675693A1 (en) 1995-10-11
NO914488L (en) 1993-05-18

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Legal Events

Date Code Title Description
FF Patent granted
KB Patent renewed
KB Patent renewed
RH1 Patent not in force