EP0588811B1 - Chair mechanism - Google Patents

Chair mechanism Download PDF

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Publication number
EP0588811B1
EP0588811B1 EP92909817A EP92909817A EP0588811B1 EP 0588811 B1 EP0588811 B1 EP 0588811B1 EP 92909817 A EP92909817 A EP 92909817A EP 92909817 A EP92909817 A EP 92909817A EP 0588811 B1 EP0588811 B1 EP 0588811B1
Authority
EP
European Patent Office
Prior art keywords
pipe
spring
chair
mount
seat
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.)
Expired - Lifetime
Application number
EP92909817A
Other languages
German (de)
French (fr)
Other versions
EP0588811A1 (en
Inventor
Tore Lie
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.)
J & T Lie Holding As
Original Assignee
J & T Lie Holding 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 J & T Lie Holding As filed Critical J & T Lie Holding As
Publication of EP0588811A1 publication Critical patent/EP0588811A1/en
Application granted granted Critical
Publication of EP0588811B1 publication Critical patent/EP0588811B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs

Definitions

  • the present invention is related to a chair mechanism for biased tilting movement between the seat and the base column, connected respectively with the seat portion and the frame of the chair mechanism.
  • tilting mechanisms or chair mechanisms comprising torsion springs
  • tilting mechanisms or chair mechanisms comprising torsion springs
  • tilting mechanisms or chair mechanisms comprising torsion springs
  • tilting mechanisms or chair mechanisms comprising torsion springs
  • tilting mechanisms or chair mechanisms comprising torsion springs
  • tilting mechanisms or chair mechanisms comprising torsion springs
  • tilting mechanisms or chair mechanisms comprising torsion springs
  • a rectilinear torsion spring usually clamped in both ends which then can be turned in relation to each other and the spring being surrounded by pipes.
  • Such a chair mount is disclosed in DE-A-2219724.
  • Fig. 1 schematically the chair mechanism according to the present invention in a top view
  • Fig. 2 discloses a front view
  • Fig. 3 discloses a ground view
  • Fig. 4 discloses a side view of the chair mechanism according to the present invention.
  • One of the pipes 6 is connected with a stop arm 7 abutting against a seat mount 2.
  • the spring pressure of the torsion spring can be adjusted between the mount 2 and the arm 7.
  • the other pipe 5 is directly connected with the frame 3 mounted to the column 4 of the chair.
  • the seat mount 2 is arranged to be journalled around the other pipe 5.
  • the force path is according to the above described details, to be found from the seat mount 2, through the arm 7 and to the pipe 6, further from hear through the torsion spring 1 to the other pipe 5 and to the column or fundament of the chair through the frame 3.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

Chair mount for a spring activated tilting movement between a seat and a turning column of a chair, being connected respectively with the seat mount (2) and the frame (3) of the mechanism, where a rectilinear torsion spring (1) preferably having a square cross section, in each end being secured to pipes (5, 6) surrounding the spring (1), where the second pipe (5) extending from one end of the spring (1) at least to beyond the middle of the spring (1), at which point the second pipe (5) is connected with the frame (3) which again is connected with the turning column (4) of the chair, the first pipe (6) extending from the other end of the spring (1) to near the second pipe (5) and here being connected with one end of a stop arm (7) of which the other end with a prestress is abutting against the seat mount of the chair by intersection of an adjustable bolt, and further that the seat mount (2) being turnably journalled around the second pipe (5).

Description

The present invention is related to a chair mechanism for biased tilting movement between the seat and the base column, connected respectively with the seat portion and the frame of the chair mechanism.
Throughout the passed years tilting mechanisms or chair mechanisms comprising torsion springs, have been used extensibly especially for office chairs and such and also have proved to be satisfactory with their small dimensions, simplicity in adjustment and good reliability. Partly this is achieved by a rectilinear torsion spring, usually clamped in both ends which then can be turned in relation to each other and the spring being surrounded by pipes. Such a chair mount is disclosed in DE-A-2219724.
With the present invention is found that this structure can be substantially simplified and especially the same advantageous are achieved by use of only one pipe, as defined by the features stated in the claim.
The drawing discloses in Fig. 1 schematically the chair mechanism according to the present invention in a top view, Fig. 2 discloses a front view, Fig. 3 discloses a ground view and Fig. 4 discloses a side view of the chair mechanism according to the present invention.
A torsion spring 1 having a square cross section, is arranged within and at both ends secured to a pipe, respectively 5 and 6. One of the pipes 6 is connected with a stop arm 7 abutting against a seat mount 2. By a means of a suitable grip the spring pressure of the torsion spring can be adjusted between the mount 2 and the arm 7. The other pipe 5 is directly connected with the frame 3 mounted to the column 4 of the chair. The seat mount 2 is arranged to be journalled around the other pipe 5.
The force path is according to the above described details, to be found from the seat mount 2, through the arm 7 and to the pipe 6, further from hear through the torsion spring 1 to the other pipe 5 and to the column or fundament of the chair through the frame 3.

Claims (1)

  1. Chair mount for a spring activated tilting movement between a seat and a turning column (4) of a chair, being connected respectively with the seat mount (2) and the frame (3) mounted to the column (4), wherein a rectilinear torsion spring (1) preferably having a square cross section, is secured at each end to a first (6) and second pipe (5) respectively surrounding the spring (1), said pipes (5, 6) extending coaxially towards each other, the second pipe (5) thereby extending from one end of the spring (1) to at least to beyond the middle of the spring (1), at which point the second pipe (5) is connected with the frame (3), the first pipe (6) extending from the other end of the spring (1) to near the second pipe (5) and here being connected with one end of an adjustible stop arm (7), the other end of said stop arm (7) abutting with a prestress against the seat mount, the seat mount (2) thereby journalled around the second pipe (5) on each side of the frame (3), characterised in that said pipes (5, 6) have the same diameter and extend outwardly to both sides from the seat mount (2).
EP92909817A 1991-05-15 1992-05-14 Chair mechanism Expired - Lifetime EP0588811B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO911899 1991-05-15
NO911899A NO176864C (en) 1991-05-15 1991-05-15 Chair fittings for spring-mounted tilt fittings between a chair's seat and swivel column
PCT/NO1992/000092 WO1992020264A1 (en) 1991-05-15 1992-05-14 Chair mechanism

Publications (2)

Publication Number Publication Date
EP0588811A1 EP0588811A1 (en) 1994-03-30
EP0588811B1 true EP0588811B1 (en) 1998-01-07

Family

ID=19894154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92909817A Expired - Lifetime EP0588811B1 (en) 1991-05-15 1992-05-14 Chair mechanism

Country Status (8)

Country Link
EP (1) EP0588811B1 (en)
JP (1) JPH06511398A (en)
KR (1) KR100210132B1 (en)
AU (1) AU1698092A (en)
CA (1) CA2103041C (en)
DE (1) DE69223962T2 (en)
NO (1) NO176864C (en)
WO (1) WO1992020264A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO125337B (en) * 1967-02-16 1972-08-28 Spilka As
FR2136591A5 (en) * 1971-04-22 1972-12-22 Upholstery Furniture Har
GB1425363A (en) * 1972-05-31 1976-02-18 Lie F Resilient mounting assembly for a tilting chair
US4235408A (en) * 1978-02-27 1980-11-25 Knoll International, Inc. Swivel-chair frame
JPS5835091U (en) * 1981-08-31 1983-03-07 積水樹脂株式会社 Cap for pipes and rods
NO872794L (en) * 1987-07-03 1989-01-04 Ring Mekanikk As VIP FITTING FOR A CHAIR, ISAER OFFICE CHAIR.

Also Published As

Publication number Publication date
KR100210132B1 (en) 1999-07-15
AU1698092A (en) 1992-12-30
EP0588811A1 (en) 1994-03-30
CA2103041C (en) 1999-10-05
DE69223962T2 (en) 1998-07-02
NO176864B (en) 1995-03-06
NO176864C (en) 1995-06-14
JPH06511398A (en) 1994-12-22
DE69223962D1 (en) 1998-02-12
CA2103041A1 (en) 1992-11-16
NO911899D0 (en) 1991-05-15
NO911899L (en) 1992-11-16
WO1992020264A1 (en) 1992-11-26

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