EP2671469A1 - Dispositif de réglage/positionnement d'angle pour dossier de chaise - Google Patents

Dispositif de réglage/positionnement d'angle pour dossier de chaise Download PDF

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Publication number
EP2671469A1
EP2671469A1 EP12171369.7A EP12171369A EP2671469A1 EP 2671469 A1 EP2671469 A1 EP 2671469A1 EP 12171369 A EP12171369 A EP 12171369A EP 2671469 A1 EP2671469 A1 EP 2671469A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
positioning
backrest
toothed portion
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.)
Withdrawn
Application number
EP12171369.7A
Other languages
German (de)
English (en)
Inventor
Chang-Chen Lin
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.)
Individual
Original Assignee
Individual
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
Priority to US13/481,838 priority Critical patent/US20130313878A1/en
Application filed by Individual filed Critical Individual
Priority to EP12171369.7A priority patent/EP2671469A1/fr
Publication of EP2671469A1 publication Critical patent/EP2671469A1/fr
Withdrawn legal-status Critical Current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
    • A47C1/031—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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C1/026—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 peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/0325—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of clamps or friction locking members
    • 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

Definitions

  • the present invention relates to an angle adjusting/positioning device for a backrest of a chair and, more particularly, to an adjusting device allowing easy operation in adjustment of an angular position of a backrest of a chair and providing reliable positioning for the backrest.
  • Conventional backrests of chairs are adjustable in angular positions to provide lying comfort.
  • Conventional backrest adjusting devices generally include a chassis below the seat, with a lower end of the backrest coupled to the chassis that allows adjustment of the angular position of the backrest.
  • the chassis is expensive and is not suitable for large chairs such as sofas and leisure chairs.
  • FIG. 10 shows a conventional chair having an adjustable device 4' for adjusting the angular position of a backrest 5' of the chair.
  • a guiding rod 2' is fixed on a base 1' of the chair, and the adjusting device 4' is mounted to a seat 3' of the chair and around the guiding rod 2'.
  • the clamping device 4' can clamp or release the guiding rod 2'.
  • a lower end of the backrest 5' is pivotably connected to a rear of the seat 3'.
  • the inclination angle or angular position of the backrest 5' is fixed when the clamping device 4' clamps the guiding rod 2'.
  • An example of such a backrest adjusting device is disclosed in U.S. Patent No. 7,736,925 .
  • the clamping device 4' in the clamping status may slide along the guiding rod 2' if the user exerts a large force against the backrest 5'. Improvement is, thus, required.
  • An objective of the present invention is to provide an adjusting device allowing easy operation in adjustment of an angular position of a backrest of a chair and providing reliable positioning for the backrest.
  • An angle adjusting/positioning device includes a first mounting seat adapted to be fixed to one of a backrest and a seat of a chair.
  • the first mounting seat includes a first sleeve having a first axle hole.
  • the first sleeve includes an end face having a first toothed portion.
  • the angle adjusting/positioning device further includes a second mounting base adapted to be fixed to the other of the backrest and the seat of the chair.
  • the second mounting base includes a second sleeve having a first side and a second side opposite to the first side.
  • a second axle hole extends from the first side through the second side of the second sleeve.
  • a second toothed portion is provided on the first side of the second sleeve and surrounds the second axle hole.
  • the second sleeve further includes a positioning portion.
  • An elastic element is mounted between the first and second sleeves. The elastic element biases the first and second toothed portions of the first and second sleeves to disengage from each other or engage with each other.
  • a handle mechanism includes a handle seat having a third sleeve. A handle is fixed to the third sleeve.
  • the third sleeve includes a third axle hole and an actuating portion. An axle extends through the third axle hole, the second axle hole, and the first axle hole of the handle seat, the second sleeve, and the first sleeve.
  • the handle is operable to move the actuating portion relative to the positioning portion, causing the second toothed portion to engage with or disengage from the first toothed portion.
  • An angular position of the backrest relative to the seat is adjustable when the second toothed portion disengages from the first toothed portion.
  • the angular position of the backrest is fixed when the second toothed portion engages with the first toothed portion.
  • an angle adjusting/positioning device for a backrest of a chair is mounted to a connection between a backrest 6 and a seat 7 of a chair.
  • a side of a backrest 6 is pivotably connected to a rear end of an armrest 81 located above a base 8 of the chair.
  • the seat 7 includes a side having a receiving portion 72 receiving a guiding rod 82 including a lower end connected to the base 8 and an upper end connected to a front end of the armrest 81.
  • the angle adjusting/positioning device includes a first mounting base 1, a second mounting base 2, an elastic element 3, a handle mechanism 4, and an axle 5.
  • the first mounting base 1 includes a first sleeve 11 and a tab 12 provided on an outer periphery of the first sleeve 11.
  • the tab 12 is engaged in a receiving hole 61 in a lower end of the backrest 6.
  • the first sleeve 11 includes a first axle hole 13.
  • a first toothed portion 14 is formed on an end face of the first sleeve 14.
  • the first axle hole 13 includes a first compartment 15 having an opening in the end face of the first sleeve 14 and surrounded by the first toothed portion 14 in the form shown.
  • the second mounting base 2 includes a second sleeve 21 having a first side 27 and a second side 28 opposite to the first side 27.
  • the second sleeve 21 further includes an outer periphery extending between the first and second sides 27 and 28.
  • a tab 22 is provided on the outer periphery of the second sleeve 21. The tab 22 is engaged in a receiving hole 71 in a rear end of the seat 7.
  • a second axle hole 23 extends from the first side 27 through the second side 28 of the second sleeve 2.
  • a second toothed portion 24 is provided on the first side 27 of the second sleeve 21 and surrounds the second axle hole 23.
  • the second axle hole 23 includes a second compartment 25 in the first side 27 and surrounded by the second toothed portion 24 in the form shown.
  • a positioning portion 26 is formed on the second side 28 of the second sleeve 21 and surrounds the second axle hole 23.
  • the positioning portion 26 includes two diametrically opposed first positioning grooves 261 and two diametrically opposed second positioning grooves 262.
  • Each of the first and second positioning grooves 261 and 262 includes a bottom wall. A spacing between the bottom wall of each first positioning groove 261 to the second side 28 of the second sleeve 21 is larger than a spacing between the bottom wall of each second positioning groove 262 and the second side 28 of the second sleeve 21.
  • the positioning portion 26 further includes a first stop wall 263 extending perpendicularly to the bottom wall of each first positioning groove 262, with the bottom wall of the first positioning groove 262 located between the inclined surface 265 and the first stop wall 263. Furthermore, the positioning portion 26 further includes a second stop wall 264 extending perpendicularly to the bottom wall of each second positioning groove 262, with the bottom wall of the second positioning groove 262 located between the inclined surface 265 and the second stop wall 264.
  • the positioning portion 26 can include only one first positioning groove 261, only one second positioning groove 262, and only one inclined surface 265.
  • the first toothed portion 14 of the first sleeve 11 engages with the second toothed portion 24 of the second sleeve 21, with the first axle hole 13 aligned with the second axle hole 23, with the first compartment 15 of the first axle hole 13 facing and aligned with the second compartment 25 of the second axle hole 23.
  • the elastic element 3 is received in the first and second compartments 15 and 25 of the first and second axle holes 13 and 23.
  • the elastic element 3 provides elastic force for operation of the first and second mounting bases 1 and 2. In the form shown, the elastic element 3 biases the first and second toothed portions 14 and 24 of the first and second mounting bases 1 and 2 to disengage from each other.
  • the handle mechanism 4 includes a handle seat 41 having a third sleeve 411.
  • the third sleeve 411 includes a first face 417 and a second face 418 opposite to the first face 417.
  • the third sleeve 411 further includes an outer periphery extending between the first and second faces 417 and 418.
  • a tab 412 is provided on the outer periphery of the third sleeve 411.
  • a handle 42 is fixed to the tab 412.
  • a third axle hole 413 extends from the first face 417 through the second face 418.
  • the third axle hole 413 includes an actuating portion 414 in the form shown having a receiving groove 415 in the first face 417 for receiving the positioning portion 26. This provides an aesthetically pleasing appearance.
  • the receiving groove 415 includes a wall having two positioning members 416 each of which is selectively engaged in one of the first and second positioning grooves 261 and 262. However, the receiving groove 415 can include only one positioning member 416.
  • the axle 5 is extended through the third, second, and first axle holes 413, 23, and 13 of the handle seat 41, the second sleeve 21, and the first sleeve 11, with a bolt 51 fixed to an end of the axle 5 to position the axle 5.
  • the handle 42 can be operated to cause engagement or disengagement between the first and second toothed portions 14 and 24 of the first and second sleeves 11 and 21.
  • each positioning member 416 of the handle seat 41 is in the first positioning groove 261, the positioning member 416 can abut against the first stop wall 263 to cause engagement of the first and second toothed portions 14 and 24.
  • the elastic element 3 is compressed to fix the angular position of the backrest 6, as shown in FIGS. 4-6 .
  • the handle 42 when it is desired to adjust the angular position of the backrest 6, the handle 42 is operated to pivot the third sleeve 411 of the handle seat 41 relative to the positioning portion 26 of the second sleeve 21.
  • Each positioning member 416 of the handle seat 41 is moved into the second positioning groove 261 and abuts against the second stop wall 264, causing disengagement of the first toothed portion 14 from the second toothed portion 24 under the returning force of the elastic element 3.
  • the inclined surfaces 265 allow smooth movement of the positioning members 416.
  • the handle 42 is moved in a reverse direction to move the positioning members 416 back into the first positioning grooves 261, engaging the first toothed portion 14 with the second toothed portion 24 and fixing the angular position of the backrest 6, as shown in FIGS. 4-6 .
  • the operation is convenient and smooth.
  • the angle adjusting/positioning device according to the present invention is more reliable than conventional clamping.
  • the first and second mounting bases 1 and 2 can be pivotably connected to the backrest 6 and the seat 7 by other provisions. Furthermore, the first and second mounting bases 1 and 2 can be coupled with the seat 7 and the backrest 6, respectively.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP12171369.7A 2012-05-27 2012-06-08 Dispositif de réglage/positionnement d'angle pour dossier de chaise Withdrawn EP2671469A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/481,838 US20130313878A1 (en) 2012-05-27 2012-05-27 Angle adjusting/positioning device for a backrest of a chair
EP12171369.7A EP2671469A1 (fr) 2012-05-27 2012-06-08 Dispositif de réglage/positionnement d'angle pour dossier de chaise

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/481,838 US20130313878A1 (en) 2012-05-27 2012-05-27 Angle adjusting/positioning device for a backrest of a chair
EP12171369.7A EP2671469A1 (fr) 2012-05-27 2012-06-08 Dispositif de réglage/positionnement d'angle pour dossier de chaise

Publications (1)

Publication Number Publication Date
EP2671469A1 true EP2671469A1 (fr) 2013-12-11

Family

ID=55070620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12171369.7A Withdrawn EP2671469A1 (fr) 2012-05-27 2012-06-08 Dispositif de réglage/positionnement d'angle pour dossier de chaise

Country Status (2)

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US (1) US20130313878A1 (fr)
EP (1) EP2671469A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
TWM588476U (zh) * 2019-08-01 2020-01-01 林長貞 座椅椅座滑動鎖定機構
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1197892A (fr) * 1958-01-14 1959-12-03 Faure Bertrand Ets Perfectionnements apportés aux dispositifs d'articulation pour sièges, notamment pour sièges d'automobiles
GB1046893A (en) * 1964-02-21 1966-10-26 Levi Clews Improvements relating to adjustable seats
GB1168790A (en) * 1965-11-29 1969-10-29 Plessey Co Ltd Improvements relating to Seat Adjusting Arrangements
EP1152158A1 (fr) * 1999-02-03 2001-11-07 Koyo Giken Co., Ltd. Dispositif de reglage d'angle
DE20319484U1 (de) * 2003-12-16 2004-03-11 Ferdinand Lusch Gmbh & Co. Kg Schwenkbeschlag
US20100117423A1 (en) * 2008-11-13 2010-05-13 Chang-Chen Lin Positioning Device For Chair
US7736925B2 (en) 2005-10-19 2010-06-15 Samsung Electronics Co., Ltd. Method of fabricating nitride-based semiconductor laser diode

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2358332A1 (de) * 1973-11-23 1975-05-28 Guenter Rauschenberger Einstellbares gelenk, insbesondere fuer liegemoebel
US6131871A (en) * 1998-05-07 2000-10-17 Lear Automotive Dearborn, Inc Manually actuated seat adjuster
DE10236158A1 (de) * 2002-08-07 2004-02-19 Rauschenberger Metallwaren Gmbh Gelenk, insbesondere für Liegen
JP4645054B2 (ja) * 2004-03-30 2011-03-09 アイシン精機株式会社 車両シート位置調整装置
US7475944B2 (en) * 2005-02-18 2009-01-13 Krueger International, Inc. Reclining and convertible seating furniture with trendelenburg feature
DE102007002366B3 (de) * 2007-01-13 2008-07-17 Keiper Gmbh & Co.Kg Beschlagsystem für einen Fahrzeugsitz
US8376463B2 (en) * 2009-04-30 2013-02-19 University of Pittsburgh—of the Commonwealth System of Higher Education User adjustable wheelchair backrest mounting hardware
US20120098313A1 (en) * 2010-10-25 2012-04-26 Humanscale Corporation Reclining Chair

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1197892A (fr) * 1958-01-14 1959-12-03 Faure Bertrand Ets Perfectionnements apportés aux dispositifs d'articulation pour sièges, notamment pour sièges d'automobiles
GB1046893A (en) * 1964-02-21 1966-10-26 Levi Clews Improvements relating to adjustable seats
GB1168790A (en) * 1965-11-29 1969-10-29 Plessey Co Ltd Improvements relating to Seat Adjusting Arrangements
EP1152158A1 (fr) * 1999-02-03 2001-11-07 Koyo Giken Co., Ltd. Dispositif de reglage d'angle
DE20319484U1 (de) * 2003-12-16 2004-03-11 Ferdinand Lusch Gmbh & Co. Kg Schwenkbeschlag
US7736925B2 (en) 2005-10-19 2010-06-15 Samsung Electronics Co., Ltd. Method of fabricating nitride-based semiconductor laser diode
US20100117423A1 (en) * 2008-11-13 2010-05-13 Chang-Chen Lin Positioning Device For Chair

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