EP0426743A1 - Locking device for chair seats. - Google Patents

Locking device for chair seats.

Info

Publication number
EP0426743A1
EP0426743A1 EP89908886A EP89908886A EP0426743A1 EP 0426743 A1 EP0426743 A1 EP 0426743A1 EP 89908886 A EP89908886 A EP 89908886A EP 89908886 A EP89908886 A EP 89908886A EP 0426743 A1 EP0426743 A1 EP 0426743A1
Authority
EP
European Patent Office
Prior art keywords
lamellae
seat
slats
chair
retainer
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.)
Granted
Application number
EP89908886A
Other languages
German (de)
French (fr)
Other versions
EP0426743B1 (en
Inventor
Tore Lie
Lars Holstensson
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.)
rh form AB
Ring Mekanikk AS
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 AT89908886T priority Critical patent/ATE101986T1/en
Publication of EP0426743A1 publication Critical patent/EP0426743A1/en
Application granted granted Critical
Publication of EP0426743B1 publication Critical patent/EP0426743B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/027—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of clamps or friction locking members

Definitions

  • Present invention is related to a locking device for a chair seat with adjustable angle according to the preamble of the claim.
  • the width or the number of lamel- lae must be grater due to the slot, thereby to achieve the necessary friction surface in relation to the force which can be expected in connection with the clamping.
  • manufacturing of the slots in the lamellae and the holes in the fixed lamellae made necessary an additonal operation in the production.
  • the assembling consumed additional time for bringing the bolt through the holes in the fixed lamellae and the slots for clamping the lamellae against a fixed abut ⁇ ment. No consideration was made as to tolerances in the produc ⁇ tion in connection with the assembling of the lamellae.
  • Fig. 1 discloses a section along I-I in Fig. 3
  • Fig. 2 discloses a section along II-II in Fig. 1
  • Fig. 3 discloses a view from the right side in Fig. 1.
  • arcuated lamellae 1 are secured to the under ⁇ side of a chair seat and protude through a retainer 7 secured to the base of the chair.
  • a retainer 7 secured to the base of the chair.
  • the fixed lamellae 2 are provided with recesses to be received by the side edges of the retainer 7 in such a way that the lamellae to are captured in the retai ⁇ ner 7.
  • a bolt 5 is arranged through a hole in the retainer 7 and connected turnable with the clamping shoe 3 in such a way that the clamping shoe 3 by turning of the bolt 5 may be dis ⁇ placed against or away from the outer lamella 2.
  • the bolt may be secured with a nut (not shown).
  • a clamping shoe 4 is abutting against the lamella 2 whereby a bolt 8 releasably is connected with the clamping shoe 4 and threaded through a hole in the retainer 7.
  • the bolt 8 conveniently is extended to the side of the chair and a opera ⁇ tion arm 9 is secured to the end of the bolt 8 suitably in a place for operation by the user. Turning of the operation arm 9 will press the clamping shoe 4 against the lamella 2.
  • the locking device By adjustment of the bolt 5 the locking device may be adjusted upon wear of the lamella and a desired position of the operation arm 9 may be achieved by adjustment. In the same way desired position of the lamellae in the retainer may be adjusted by adjusting the bolts 5 and 8.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Connection Of Plates (AREA)
  • Clamps And Clips (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Saccharide Compounds (AREA)

Abstract

Le dispositif décrit, qui sert à bloquer un siège de chaise dans une position angulaire désirée, comprend plusieurs lamelles (1) qui sont reliées au siège et qui s'étendent à travers un organe de retenue (7) et entre des lamelles fixes (2) placées dans l'organe de retenue. Des patins de serrage (3, 4), qui sont placés en about contre les lamelles fixes externes (2), peuvent être bloqués par serrage par des boulons (5, 6), qui servent à bloquer la position du siège et à permettre le réglage des points de serrage des boulons, où les lamelles (1) sans trous sont disposées en about contre les lamelles fixes (2) sur toute leur largeur, les lamelles (1) étant reliées au siège de la chaise et les lamelles fixes (2) étant coincées par l'organe de retenue (7) et par les boulons (5, 6), lesquels comportent chacun un patin de serrage (3, 4) et sont alignés axialement.The device described, which serves to lock a chair seat in a desired angular position, comprises several slats (1) which are connected to the seat and which extend through a retaining member (7) and between fixed slats (2 ) placed in the retainer. Clamping pads (3, 4), which are placed abutting against the external fixed slats (2), can be locked by tightening with bolts (5, 6), which serve to block the position of the seat and allow the adjustment of the bolt tightening points, where the slats (1) without holes are arranged abutting against the fixed slats (2) over their entire width, the slats (1) being connected to the seat of the chair and the fixed slats (2 ) being trapped by the retaining member (7) and by the bolts (5, 6), which each have a clamping pad (3, 4) and are axially aligned.

Description

Locking device for chair seats
Present invention is related to a locking device for a chair seat with adjustable angle according to the preamble of the claim.
Several principles are known for adjustment and locking the angular position of seats, especially of office chairs. For a long time it already has been known to use arcuated lamellae secured to the underside of the seat and guided be- tween lamellae blocks in a retainer which again is secured to the base of the chair, whereby a bolt is extending through a centric hole in the lamellae block and a slot in all lamel¬ lae. Locking of the seat in a desired position was provided by clamping the lamellae and the lamellae block together where- by the abutment surface which was necessary to achieve suffi¬ cient friction in relation to the force from the locking mechanism, was provided by the width of the lamella on both sides of the slots as well as their number.
In known embodiments the width or the number of lamel- lae must be grater due to the slot, thereby to achieve the necessary friction surface in relation to the force which can be expected in connection with the clamping. Additionally manufacturing of the slots in the lamellae and the holes in the fixed lamellae made necessary an additonal operation in the production. Also the assembling consumed additional time for bringing the bolt through the holes in the fixed lamellae and the slots for clamping the lamellae against a fixed abut¬ ment. No consideration was made as to tolerances in the produc¬ tion in connection with the assembling of the lamellae. With the locking device according to the present inven¬ tion the above mentioned disadvantages by known corresponding devices are avoided and there is provided a possibility for adjustment of a desired position of the lamellae in the retai¬ ner as well as a possibility for later adjustment of the posi- tion of the operation handle when the locking device is brought in clamping position. These advantages are achieved with the locking device according to the invention as described with the features stated in the claim. In the drawing Fig. 1 discloses a section along I-I in Fig. 3, Fig. 2 discloses a section along II-II in Fig. 1 and Fig. 3 discloses a view from the right side in Fig. 1. Several arcuated lamellae 1 are secured to the under¬ side of a chair seat and protude through a retainer 7 secured to the base of the chair. In the retainer are arranged retai¬ ning lamellae in such a way that all arcuated lamellae 1 are kept between fixed lamellae. The fixed lamellae 2 are provided with recesses to be received by the side edges of the retainer 7 in such a way that the lamellae to are captured in the retai¬ ner 7. Against both sides of the lamella package are arranged preferably a cup shaped clamping shoe 3, 4 abutting with pre¬ ferably an annular surface against a retaining lamella 2. A bolt 5 is arranged through a hole in the retainer 7 and connected turnable with the clamping shoe 3 in such a way that the clamping shoe 3 by turning of the bolt 5 may be dis¬ placed against or away from the outer lamella 2. Upon desired adjustment of the bolt 5 by means of threads 6 , the bolt may be secured with a nut (not shown).
Againt the opposite side of the lamella package a clamping shoe 4 is abutting against the lamella 2 whereby a bolt 8 releasably is connected with the clamping shoe 4 and threaded through a hole in the retainer 7. The bolt 8 conveniently is extended to the side of the chair and a opera¬ tion arm 9 is secured to the end of the bolt 8 suitably in a place for operation by the user. Turning of the operation arm 9 will press the clamping shoe 4 against the lamella 2.
By adjustment of the bolt 5 the locking device may be adjusted upon wear of the lamella and a desired position of the operation arm 9 may be achieved by adjustment. In the same way desired position of the lamellae in the retainer may be adjusted by adjusting the bolts 5 and 8.

Claims

P a t e n t C l a i m
Device for locking in a chair seat in a desired angu¬ lar position, comprising several lamellae (1) connected with the seat, extending through a retainer (7) and between fixed lamellae (2) arranged in the retainer, whereby clamping shoes (3, 4) which are abutting against the outer fixed lamellae (2) may be clamped by bolts (5, 6) for locking the position of the seat and providing possibility for adjustment of the clamping points of the bolts, CHARACTERIZED IN lamellae (1) without holes are arranged abutting against fixed lamellae (2) across their width, the lamellae (1) being connected with the seat of the chair, the fixed lamellae (2) being captured by the retainer (7) and the bolts (5, 6), each pro- vided with a clamping shoe (3, 4) and aligned axially.
EP89908886A 1988-07-27 1989-07-27 Locking device for chair seats Expired - Lifetime EP0426743B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89908886T ATE101986T1 (en) 1988-07-27 1989-07-27 LOCKING ASSEMBLY FOR CHAIR SEATS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO883319 1988-07-27
NO883319A NO166684C (en) 1988-07-27 1988-07-27 CHAIRS FOR CHAIRS.

Publications (2)

Publication Number Publication Date
EP0426743A1 true EP0426743A1 (en) 1991-05-15
EP0426743B1 EP0426743B1 (en) 1994-03-02

Family

ID=19891105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908886A Expired - Lifetime EP0426743B1 (en) 1988-07-27 1989-07-27 Locking device for chair seats

Country Status (8)

Country Link
EP (1) EP0426743B1 (en)
JP (1) JPH0734773B2 (en)
AU (1) AU4039389A (en)
DE (1) DE68913539T2 (en)
DK (1) DK173454B1 (en)
FI (1) FI90304C (en)
NO (1) NO166684C (en)
WO (1) WO1990000871A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2252725A (en) * 1991-02-15 1992-08-19 Ashfield Eng Co Locking adjustment for furniture

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246287B (en) * 1990-06-12 1993-10-20 Unit Press Limited Back support pillar for a chair
DE9400936U1 (en) * 1994-01-20 1994-05-05 Högl Metall GmbH, 96247 Michelau Seating furniture, in particular office swivel chairs
US8454091B2 (en) 2010-06-09 2013-06-04 Groupe Dutailier Inc. Chair adjustment mechanism

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2523308C2 (en) * 1975-05-27 1982-08-12 Konrad 8501 Burgthann Neumüller Seating furniture, in particular office swivel chairs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9000871A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2252725A (en) * 1991-02-15 1992-08-19 Ashfield Eng Co Locking adjustment for furniture
GB2252725B (en) * 1991-02-15 1995-04-19 Ashfield Eng Co Wexford Ltd An adjustment mechanism for furniture

Also Published As

Publication number Publication date
EP0426743B1 (en) 1994-03-02
AU4039389A (en) 1990-02-19
FI910342A0 (en) 1991-01-23
NO883319L (en) 1990-01-29
FI90304C (en) 1994-01-25
DE68913539T2 (en) 1994-06-09
NO166684B (en) 1991-05-21
DK4391D0 (en) 1991-01-10
DK173454B1 (en) 2000-11-20
JPH0734773B2 (en) 1995-04-19
NO883319D0 (en) 1988-07-27
DK4391A (en) 1991-01-10
WO1990000871A1 (en) 1990-02-08
JPH04501217A (en) 1992-03-05
DE68913539D1 (en) 1994-04-07
NO166684C (en) 1991-08-28
FI90304B (en) 1993-10-15

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