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WO1990000871A1 - Locking device for chair seats - Google Patents

Locking device for chair seats Download PDF

Info

Publication number
WO1990000871A1
WO1990000871A1 PCT/NO1989/000078 NO8900078W WO9000871A1 WO 1990000871 A1 WO1990000871 A1 WO 1990000871A1 NO 8900078 W NO8900078 W NO 8900078W WO 9000871 A1 WO9000871 A1 WO 9000871A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamellae
seat
retainer
bolts
clamping
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.)
Ceased
Application number
PCT/NO1989/000078
Other languages
French (fr)
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.)
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 DE68913539T priority Critical patent/DE68913539T2/en
Priority to JP1508374A priority patent/JPH0734773B2/en
Priority to AT89908886T priority patent/ATE101986T1/en
Publication of WO1990000871A1 publication Critical patent/WO1990000871A1/en
Priority to DK199100043A priority patent/DK173454B1/en
Priority to FI910342A priority patent/FI90304C/en
Anticipated expiration legal-status Critical
Ceased 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)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Saccharide Compounds (AREA)
  • Clamps And Clips (AREA)

Abstract

Device for locking in a chair seat in a desired angular 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, where lameellae (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 provided with a clamping shoe (3, 4) and aligned axially.

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.
PCT/NO1989/000078 1988-07-27 1989-07-27 Locking device for chair seats Ceased WO1990000871A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE68913539T DE68913539T2 (en) 1988-07-27 1989-07-27 LOCKING ARRANGEMENT FOR CHAIR SEATS.
JP1508374A JPH0734773B2 (en) 1988-07-27 1989-07-27 Device for fixing the seat part of the chair
AT89908886T ATE101986T1 (en) 1988-07-27 1989-07-27 LOCKING ASSEMBLY FOR CHAIR SEATS.
DK199100043A DK173454B1 (en) 1988-07-27 1991-01-10 Locking device for chair seats
FI910342A FI90304C (en) 1988-07-27 1991-01-23 Locking device 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 (1)

Publication Number Publication Date
WO1990000871A1 true WO1990000871A1 (en) 1990-02-08

Family

ID=19891105

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1989/000078 Ceased WO1990000871A1 (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 (6)

* 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
US5423595A (en) * 1991-02-15 1995-06-13 Ashfield Engineering Company Wexford Limited Adjustment mechannism for locking relatively movable parts of furniture
US6840582B2 (en) 2002-05-14 2005-01-11 Formway Furniture Limited Height adjustable arm assembly
US6874852B2 (en) 2000-09-28 2005-04-05 Formway Furniture Limited Lumbar support
US8454091B2 (en) 2010-06-09 2013-06-04 Groupe Dutailier Inc. Chair adjustment mechanism

Citations (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

Patent Citations (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

Cited By (10)

* 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
US5286088A (en) * 1990-06-12 1994-02-15 Unit Press Limited Underseat mechanism for a chair
US5423595A (en) * 1991-02-15 1995-06-13 Ashfield Engineering Company Wexford Limited Adjustment mechannism for locking relatively movable parts of furniture
DE9400936U1 (en) * 1994-01-20 1994-05-05 Högl Metall GmbH, 96247 Michelau Seating furniture, in particular office swivel chairs
US6874852B2 (en) 2000-09-28 2005-04-05 Formway Furniture Limited Lumbar support
US6908159B2 (en) 2000-09-28 2005-06-21 Formway Furniture Limited Seat for a reclining office chair
US6910741B2 (en) 2000-09-28 2005-06-28 Formway Furniture Limited Lumbar support
US7441839B2 (en) 2000-09-28 2008-10-28 Formway Furniture Limited Reclinable chair
US6840582B2 (en) 2002-05-14 2005-01-11 Formway Furniture Limited Height adjustable arm assembly
US8454091B2 (en) 2010-06-09 2013-06-04 Groupe Dutailier Inc. Chair adjustment mechanism

Also Published As

Publication number Publication date
EP0426743A1 (en) 1991-05-15
AU4039389A (en) 1990-02-19
DE68913539T2 (en) 1994-06-09
FI90304B (en) 1993-10-15
FI90304C (en) 1994-01-25
DE68913539D1 (en) 1994-04-07
DK4391A (en) 1991-01-10
DK173454B1 (en) 2000-11-20
FI910342A0 (en) 1991-01-23
JPH04501217A (en) 1992-03-05
NO883319L (en) 1990-01-29
NO883319D0 (en) 1988-07-27
NO166684C (en) 1991-08-28
EP0426743B1 (en) 1994-03-02
JPH0734773B2 (en) 1995-04-19
DK4391D0 (en) 1991-01-10
NO166684B (en) 1991-05-21

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