EP0022225B1 - Sitzmöbel, insbesondere Bürodrehstuhl - Google Patents

Sitzmöbel, insbesondere Bürodrehstuhl Download PDF

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Publication number
EP0022225B1
EP0022225B1 EP80103634A EP80103634A EP0022225B1 EP 0022225 B1 EP0022225 B1 EP 0022225B1 EP 80103634 A EP80103634 A EP 80103634A EP 80103634 A EP80103634 A EP 80103634A EP 0022225 B1 EP0022225 B1 EP 0022225B1
Authority
EP
European Patent Office
Prior art keywords
clamp bolt
lever
thrust bearing
straps
item
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
Application number
EP80103634A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0022225A1 (de
Inventor
Herbert Beer
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.)
Steifensand Friedrich Martin
Steifensand Sitzmoebel- und Tischfabrik Inh F Ma
Original Assignee
STEIFENSAND SITZMOBEL- und TISCHFABRIK INH F MARTIN STEIFENSAND
F Martin Steifensand Sitzmobel- und Tischfabrik & Co KG GmbH
Steifensand Friedrich Martin
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 STEIFENSAND SITZMOBEL- und TISCHFABRIK INH F MARTIN STEIFENSAND, F Martin Steifensand Sitzmobel- und Tischfabrik & Co KG GmbH, Steifensand Friedrich Martin filed Critical STEIFENSAND SITZMOBEL- und TISCHFABRIK INH F MARTIN STEIFENSAND
Priority to AT80103634T priority Critical patent/ATE5173T1/de
Publication of EP0022225A1 publication Critical patent/EP0022225A1/de
Application granted granted Critical
Publication of EP0022225B1 publication Critical patent/EP0022225B1/de
Expired 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
    • 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

  • the invention relates to seating furniture according to the preamble of claim 1.
  • seating furniture is known from DE-A-2 335 586.
  • the seat support and the backrest can be brought to the supporting structure in different positions, regardless of the current position of the other part, and that steplessly.
  • the straps are clamped to the base frame with the aid of the clamping bolt and the lever in such a way that eccentric discs attached to the lever cause the straps and the supporting structure to be pressed together or clamped together.
  • the same prior publication shows a similar arrangement, in which the clamping or pressing takes place with the aid of two cams of the clamping bolt.
  • a similar piece of seating furniture is known from DE-B-1 902 670.
  • tabs are clamped together by a hand lever which is pressed into the clamped or locked position by a spring tensioned outside the clamping device between an associated lever arm and the backrest.
  • a tab is attached to the seat, which has a plurality of bores with slots located in between in the approximately vertical direction.
  • a plug pin is provided, which has two shaft sections of different diameters.
  • the shaft section with the small diameter fits into the slots mentioned and the shaft section with the larger diameter into the bores.
  • the operator can use a lever to move the bolt against the action of a helical spring to such an extent that the shaft section of smaller diameter is located in the area of the tab. This allows the seat to be moved to a different position. By releasing the lever, the shaft section of larger diameter then enters the relevant hole in the tab. This results in a positive connection between the bolt and the bracket, which locks the respective inclination of the seat and backrest.
  • the disadvantage here is that the inclination of the seat and backrest cannot be adjusted continuously.
  • the object of the invention is to improve seating furniture in accordance with the preamble of claim 1 in such a way that, while avoiding the known eccentric locking and its disadvantages, a structurally simple arrangement is created which, even if the inaccurate dimensions of the parts in question occur, securely locks the chair parts guaranteed in the desired position with continuous adjustment and simple operation by the person sitting on the furniture, a compact space-saving arrangement should be created while achieving a sufficiently strong spring force.
  • the abutment attachment on the clamping bolt results in a direct attack of the two forces required for the creation of the clamping position and the release of the clamping position on the clamping bolt.
  • such an arrangement is very space-saving and structurally simple.
  • the pivoting path of the lever for unlocking the parts can be relatively short. A light tap by the person sitting on the chair is sufficient, and the respective furniture part can be infinitely adjusted.
  • the invention can be used both in the adjustment of the backrest to the seat support and in the adjustment of the seat support to the supporting structure, both of the aforementioned adjustments of a piece of seating furniture preferably being designed accordingly. But it could also be configured on a piece of seating furniture according to the invention.
  • a seat support is fastened by means of several screws, of which only the screws 2 are visible, which consists of an angle rail 3 and a U-rail 4.
  • the U-rail 4 is connected in an articulated manner via an axis or shaft 5, only indicated, to a tube section 6 serving as a supporting structure, in the opening 7 of which the supporting cone of the base frame (not shown) is fastened.
  • a backrest bracket 9 is pivotally connected to the U-rail 4 of the seat support by means of a further axis 8.
  • an adjusting spiral spring 11 is wound around the axis 8, which is supported on the one hand on the bottom 4 'of the U-rail and on the other hand on the backrest holder 9, which can be inserted into the backrest holder and clamped there by means of the screw handle 25 and supports the back cushion Press part of the backrest against the back of the person sitting on the chair.
  • the invention is explained on the basis of the adjustment of the backrest or its holder 9 for the seat support, specifically for its U-shaped rail 4.
  • one or more lamellae or lugs 12 (hereinafter only called lamellae) are provided, each of which engages around a clamping bolt 14 with a slot 13 (see FIG. 2).
  • a first abutment 15 e.g. a screw nut, firmly attached.
  • disc springs 16 are provided which are supported between the outside 4 "of the U-rail 4 and the first abutment 15 and strive to press this abutment and thus the clamping bolt 14 in the direction of arrow A.
  • the second abutment 15 ′ thus presses the slats 12 and the intermediate layers, in this example in the form of intermediate washers 17 against the inside 4 ′′ of the U-rail. This frictional engagement is sufficient to hold the slats firmly on the U-rail 4. Since the lamellae are articulated on the backrest holder 9 via a pin 18, the angular position of the backrest relative to the seat support is thereby fixed.
  • lever 19, 21 is pressed somewhat downward in the direction of arrow B, it pivots about the point or the edge 23 'until the contact surface 23 bears against the adjacent leg of the U-rail 4.
  • the shorter lever arm 21 is pivoted in the direction of arrow C and thus moves over the third abutment 15 ", the clamping bolt 14 with the abutments 15 and 15 'in the direction of arrow D, ie in its longitudinal direction, the springs 16 being compressed somewhat.
  • the frictional engagement between the parts 12, 17 and 4"' is canceled and the backrest holder 9 can be pivoted to the U-rail 4 of the seat support. If the backrest is to be pivoted back further, this is done by appropriately leaning the back of the person sitting on the chair.
  • the shorter lever arm 21, which extends to the edge 23 'forming the lever pivot point, is relatively small compared to the long lever arm 19. Due to this lever translation provided by the invention, the effort required by the operator to release the frictional engagement is relatively low. This effect is further supported by the fact that the edge 23 'lies in the immediate vicinity of the side of the clamping bolt 14 facing the contact surface 23.
  • the long lever arm 19 only has to be pivoted with its handle 20 by a relatively small angle.
  • the shorter lever arm 21 overlaps the upper edge of the adjacent leg of the U-rail 4 with a bend 24. This prevents the lever arrangement from being inadvertently rotated around the clamping bolt 14.
  • the axis 18 can carry the screw handle 25, by means of which the legs of the seat back holder 9 can be pressed against one another, as a result of which the seat back, which is height-adjustable in the seat back holder, can be locked in the respective height position.
  • a basically the same arrangement can be provided for adjusting the angular position of the seat support 3, 4 for the supporting structure 6 and for releasing and fixing the respective position.
  • An adjusting spring according to reference number 11 can also be provided here.
  • the above arrangement is not shown in the drawing for the sake of simplicity.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Special Chairs (AREA)
  • Hydrogenated Pyridines (AREA)
EP80103634A 1979-07-06 1980-06-27 Sitzmöbel, insbesondere Bürodrehstuhl Expired EP0022225B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103634T ATE5173T1 (de) 1979-07-06 1980-06-27 Sitzmoebel, insbesondere buerodrehstuhl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2927377A DE2927377C2 (de) 1979-07-06 1979-07-06 Sitzmöbel, insbesondere Bürodrehstuhl
DE2927377 1979-07-06

Publications (2)

Publication Number Publication Date
EP0022225A1 EP0022225A1 (de) 1981-01-14
EP0022225B1 true EP0022225B1 (de) 1983-11-02

Family

ID=6075095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103634A Expired EP0022225B1 (de) 1979-07-06 1980-06-27 Sitzmöbel, insbesondere Bürodrehstuhl

Country Status (9)

Country Link
US (1) US4392686A (enrdf_load_stackoverflow)
EP (1) EP0022225B1 (enrdf_load_stackoverflow)
JP (1) JPS56501193A (enrdf_load_stackoverflow)
AT (1) ATE5173T1 (enrdf_load_stackoverflow)
DE (1) DE2927377C2 (enrdf_load_stackoverflow)
DK (1) DK288180A (enrdf_load_stackoverflow)
FI (1) FI802103A7 (enrdf_load_stackoverflow)
NO (1) NO801938L (enrdf_load_stackoverflow)
WO (1) WO1981000044A1 (enrdf_load_stackoverflow)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT384721B (de) * 1983-05-13 1987-12-28 Wiesner Hager Kg Arbeitsstuhl
DE3424756A1 (de) * 1983-08-12 1985-02-28 Konrad 8501 Burgthann Neumüller Sitztraeger fuer stuehle, insbesondere arbeitsdrehstuehle
DE3412018A1 (de) * 1984-03-31 1985-10-03 Wilhelm Link GmbH & Co KG Stahlrohrmöbel, 7475 Meßstetten Buerostuhl
DE3425387A1 (de) * 1984-07-10 1986-02-27 Rolf 7298 Loßburg Völkle Sitzmoebel mit klemmeinrichtung zum verstellen der neigung von rueckenlehne und/oder sitzteil
US4781422A (en) * 1985-11-14 1988-11-01 Random Corporation Adjustable clutch mechanism
US5066069A (en) * 1990-05-03 1991-11-19 Systems Furniture Company Chair back and seat adjustment mechanism
IE66891B1 (en) * 1991-02-15 1996-02-07 Ashfield Eng Co Wexford Ltd An adjustment mechanism for furniture
DE4235247C1 (de) * 1992-10-20 1994-03-10 Link Wilhelm Kg Stuhl, insbesondere Bürostuhl
US5356200A (en) * 1992-10-23 1994-10-18 Doerner Products Ltd. Unitary brake for a chair tilt mechanism
US5772351A (en) * 1995-01-24 1998-06-30 Chih Ching Industry Ltd. Pivot joint
EP0809453B1 (en) * 1995-02-15 2000-07-12 Ashfield Engineering Company Wexford Limited An actuator for a chair mechanism lock
NO305884B1 (no) * 1997-08-25 1999-08-16 Sylve Moheim Arbeidsstol
US6007150A (en) * 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
US6257667B1 (en) * 1999-06-30 2001-07-10 Bayliner Marine Corporation Pivot bracket and convertible seat
US6520341B2 (en) 2001-04-18 2003-02-18 M-I L.L.C. Screen tensioning device and method for a vibrating screen separator
US6893096B2 (en) 2002-09-05 2005-05-17 A-Dec, Inc. Headrest support and adjustment mechanism
TWI827479B (zh) * 2023-02-22 2023-12-21 陳信華 椅子調整裝置的控制拉桿結構

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7428281U (de) * 1974-11-21 Drabert Soehne Sitzmöbel, insbesondere Bürodrehstuhl oder Arbeitsstuhl

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597847A (en) * 1924-12-08 1926-08-31 Royal Easy Chair Company Adjustable chair
US2476258A (en) 1942-10-03 1949-07-12 Lundquist Carl Ernst Edvard Support for vertically adjustable seats
CH260823A (de) * 1943-05-12 1949-04-15 Odelberg & Olson Ab Kupplung für eine von einem Ständer getragene und relativ zu einem Stuhlsitz in der Höhe einstellbare und vorwärts sowie rückwärts verschwenkbare Stuhlrückenstütze.
DE1902670C3 (de) * 1968-02-01 1975-11-27 Gerdi Kerstholt Geb. Spaeth Sitz mit einstellbarem Sitzteil und einstellbarer Rückenlehne
JPS4415619Y1 (enrdf_load_stackoverflow) * 1968-08-30 1969-07-05
DE7239551U (de) * 1972-10-27 1973-09-13 Neumueller K U S Metallwaren Ohg Sitzmöbel, insbesondere Bürostuhl
DE2335586A1 (de) * 1973-01-29 1975-01-30 Fritz Kerstholt Sitz- und/oder liegemoebel mit bewegbarem rueckenteil
JPS535475Y2 (enrdf_load_stackoverflow) * 1973-08-03 1978-02-10
US4018104A (en) * 1975-03-17 1977-04-19 Caterpillar Tractor Co. Frictionally held control linkage for engine throttle controls and the like
US4062587A (en) * 1976-01-13 1977-12-13 Herman Miller, Inc. Back position control device for chairs
DE2710043A1 (de) * 1977-03-08 1978-09-14 Kirschbaum Albrecht Von Sitztraeger fuer einen stuhl
NO143253C (no) * 1977-08-25 1981-01-14 Staal & Stil As Anordning ved arbeidsstol.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7428281U (de) * 1974-11-21 Drabert Soehne Sitzmöbel, insbesondere Bürodrehstuhl oder Arbeitsstuhl

Also Published As

Publication number Publication date
WO1981000044A1 (fr) 1981-01-22
DK288180A (da) 1981-01-07
DE2927377C2 (de) 1983-12-08
ATE5173T1 (de) 1983-11-15
US4392686A (en) 1983-07-12
NO801938L (no) 1981-01-07
FI802103A7 (fi) 1981-01-01
DE2927377A1 (de) 1981-01-08
JPS56501193A (enrdf_load_stackoverflow) 1981-08-27
EP0022225A1 (de) 1981-01-14

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