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US20070024100A1 - Adjustable armrest assembly - Google Patents

Adjustable armrest assembly Download PDF

Info

Publication number
US20070024100A1
US20070024100A1 US11/193,380 US19338005A US2007024100A1 US 20070024100 A1 US20070024100 A1 US 20070024100A1 US 19338005 A US19338005 A US 19338005A US 2007024100 A1 US2007024100 A1 US 2007024100A1
Authority
US
United States
Prior art keywords
controlling part
armrest assembly
adjustable armrest
control member
supporting tube
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.)
Abandoned
Application number
US11/193,380
Other languages
English (en)
Inventor
Chun Chan
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.)
AQUALINK ENTERPRISES Co Ltd
Aqualink Enterprise Co Ltd
Original Assignee
Aqualink Enterprise Co Ltd
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 TW094122674A priority Critical patent/TWI280110B/zh
Priority to GB0514411A priority patent/GB2428186B/en
Application filed by Aqualink Enterprise Co Ltd filed Critical Aqualink Enterprise Co Ltd
Priority to US11/193,380 priority patent/US20070024100A1/en
Assigned to CHAN, CHUN HUI, AQUALINK ENTERPRISES CO., LTD. reassignment CHAN, CHUN HUI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHAN, CHUN HUI
Publication of US20070024100A1 publication Critical patent/US20070024100A1/en
Abandoned legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/022Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0303Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction
    • A47C1/0305Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction by peg-and-notch or pawl-and-ratchet mechanism
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/022Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/022Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0303Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/54Supports for the arms

Definitions

  • This invention generally relates to an armrest assembly, and more particularly to an adjustable armrest assembly.
  • FIGS. 1 and 2 show a conventional adjustable armrest assembly 10 .
  • the adjustable armrest assembly 10 comprises an L-shaped supporting member 12 , a vertical sleeve 14 , a lever body 16 , and an armrest 18 .
  • the L-shaped supporting member 12 has a horizontal part 20 fixed on a chair (not shown), and a vertical part 22 extending upward from the proximal end of the horizontal part 20 and having a plurality of positioning grooves 24 formed thereon.
  • the vertical sleeve 14 is slidably sleeved on the vertical part 22 and defines a space 26 for receiving the vertical part 22 .
  • the vertical sleeve 14 has a plurality of limiting ribs 28 formed within the space 26 , and the limiting ribs 28 slidably contact the vertical part 22 so as to prevent wobbling of the vertical sleeve 14 relative to the vertical part 22 .
  • the lever body 16 has an upper block portion 30 pivoted to the vertical sleeve 14 , an engaging portion 32 extending downward from the upper block portion 30 into the space 26 to releasably engage one of the positioning grooves 24 , and an operating portion 34 connected to the upper block portion 30 and exposed from the vertical sleeve 14 .
  • the armrest 18 is disposed on the vertical sleeve 14 .
  • the engaging portion 32 disengages from the positioning groove 24 and then selectively engages with any other positioning groove 24 such that the armrest 18 can be adjusted to a suitable and desired height.
  • the engaging portion 32 may disengage from the selected positioning groove 24 due to an unexpected touch at the operating portion 34 , such that the user needs to reset the armrest 18 to the suitable height.
  • the present invention provides an adjustable armrest assembly to overcome the above-mentioned problems.
  • the present invention provides an adjustable armrest assembly, which comprises a supporting tube having a chamber and a plurality of positioning grooves formed within the chamber, and a height control member slidably engaged along the chamber of the supporting tube; wherein the height control member comprises a first controlling part having a first end defining a fixing slot and a second end for being connected to an armrest, and a second controlling part having a first end provided with a positioning block movably embedded in the fixing slot of the first controlling part.
  • the second controlling part is coupled with the first controlling part and movable relative to the first controlling part between an engaging position and a disengaging position; wherein the positioning block is driven to eject from the fixing slot and engage with one of the positioning grooves while the second controlling part is moved to the engaging position, and the positioning block is driven to draw back into the fixing slot and disengage from each of the positioning grooves while the second controlling part is moved to the disengaging position.
  • the adjustable armrest assembly further comprises a rotatable indicator, which is attached to the height control member and rotatable according to the sliding position of the height control member relative to the supporting tube whereby showing the height of the armrest relative to the supporting tube.
  • FIGS. 1 and 2 show a conventional adjustable armrest assembly.
  • FIG. 3 is an exploded view of an adjustable armrest assembly according to one embodiment of the present invention.
  • FIG. 4 is a perspective view of the guiding frame of the supporting tube according to the present invention.
  • FIG. 5 is a cross-sectional view of the adjustable armrest assembly according to the present invention, in which the second controlling part is moved to an engaging position.
  • FIG. 6 is a cross-sectional view of the adjustable armrest assembly according to the present invention, in which the second controlling part is moved to a disengaging position.
  • FIG. 7 is another cross-sectional view of the adjustable armrest assembly according to the present invention.
  • FIG. 3 is an exploded view of an adjustable armrest assembly 100 according to one embodiment of the present invention.
  • the armrest assembly 100 comprises a supporting tube 102 , a height control member 104 and a housing 106 .
  • the supporting tube 102 is fixed on one side of a chair (not shown) and defines a chamber 108 for receiving the height control member 104 .
  • the height control member 104 is slidably engaged along the chamber 108 of the supporting tube 102 .
  • the housing 106 houses the supporting tube 102 and the height control member 104 , and has an opening 109 a and an opening 109 b respectively formed on two opposite sides.
  • the housing 106 and the height control member 104 are slidable together relative to the supporting tube 102 .
  • the supporting tube 102 has a guiding frame 110 fixed on the inner wall 108 a of the chamber 108 for guiding the height control member 104 into the chamber 108 .
  • the guiding frame 110 has a plurality of positioning grooves 112 arranged in a row along one of its inner surfaces and a rack gear 114 provided along another one of its inner surfaces as shown in FIG. 4 .
  • the guiding frame 110 further has a receiving slit 110 a formed thereof.
  • the height control member 104 includes a first controlling part 116 and a second controlling part 118 coupled with the first controlling part 116 .
  • the first controlling part 116 has a guide gear 120 , three transmission gears 122 , 124 , 126 , and a driving gear 128 , which are rotatably installed on the side 129 a through four fixed pins 130 a, 130 b, 130 c, 130 d and a rotatable pin 132 , respectively.
  • the guide gear 120 is engaged with the rack gear 114 and rotatably travels along the rack gear 114 such that the height control member 104 is slidably engaged along the chamber 108 of the supporting tube 102 .
  • a fixing element 134 is coupled to the four fixed pins 130 a, 130 b, 130 c, 130 d and the rotatable pin 132 and fixed to the side 129 a through two screws 136 such that the guide gear 120 , the three transmission gears 122 , 124 , 126 , and the driving gear 128 can be rotatably fixed between the fixing element 134 and the side 129 a of the first controlling part 116 .
  • the fixed pins 130 a, 130 b, 130 c, 130 d are integrally formed on the side 129 a.
  • the rotatable pin 132 is rotatably mounted on the side 129 a and engaged with the driving gear 128 , such that the rotatable pin 132 can rotate in accordance with the rotation of the driving gear 128 .
  • the rotatable pin 132 passes through a hole 138 formed on the fixing element 134 and connected to a rotatable indicator 140 .
  • the rotatable indicator 140 is disposed at the opening 109 a of the housing 106 and has several different numerals 142 marked around the surface 140 a.
  • the supporting tube 102 further has a receiving slit 111 corresponding to the receiving slit 110 a of the guiding frame 110 for receiving the rotatable pin 132 .
  • the first controlling part 116 has one end 116 a, which defines a fixing slot 144 and a receiving slot 146 across the fixing slot 144 .
  • the first controlling part 116 further has one end 116 b, which is provided with a supporting plate 147 for being connected to an armrest (not shown).
  • the supporting plate 147 has four fixing holes 147 a formed thereof and respectively corresponding to four screw holes 106 a formed on the housing 106 . Four screws (not show) can pass through the four fixing holes 147 a of the supporting plate 147 and screw into the four screw holes 106 a of the housing 106 , respectively, such that the first controlling part 116 can be firmly fixed to the housing 106 .
  • the second controlling part 118 has one end 118 a, which includes a bent portion 148 and is provided with a positioning block 150 having an opening 150 a defined thereon.
  • the bent portion 148 includes an upper segment 148 a, a lower segment 148 b, and a shifting segment 148 c therebetween, and passes through the opening 150 a such that the positioning block 150 can slide along the segment 148 a, 148 b and 148 c.
  • the second controlling part 118 is coupled with the first controlling part 116 on the side 129 b, such that the positioning block 150 is embedded and movable horizontally in the fixing slot 144 while the bent portion 148 is positioned and movable vertically within the receiving slot 146 .
  • the second controlling part 118 further has one end 118 b provided with an operating element 152 , and the operating element 152 is attached to the end 118 b of the second controlling part 118 while passing through the opening 109 b of the housing 106 .
  • the first controlling part 116 has a groove 154 formed on the side 129 b, and the second controlling part 118 has a groove 156 formed corresponding to the groove 154 of the first controlling part 116 .
  • the groove 154 of the first controlling part 116 and the groove 156 of the second controlling part 118 together define a spring chamber 158 for accommodating a spring 160 .
  • the spring 160 applies an elastic force E to a side surface 156 a of second controlling part 118 such that the second controlling part 118 is moved to an engaging position, in which the bottom surface 118 d of the second controlling part 118 contacts and stops at the positioning block 150 .
  • the bent portion 148 is moved downward and drives the positioning block 150 to the upper segment 148 a such that the positioning block 150 ejects from the fixing slot 144 and engages with one of the positioning grooves 112 .
  • the operating element 152 is lifted upward by the user with an applying force F opposing the elastic force E such that the second controlling part 118 is moved to a disengaging position, in which the top surface 118 c of the second controlling part 118 contacts and stops at the bottom 147 b of the supporting plate 147 .
  • the bent portion 148 is moved upward and drives the positioning block 150 to the lower segment 148 b such that the positioning block 150 draws back into the fixing slot 144 and disengages from the one of the positioning grooves 112 .
  • the guide gear 120 can rotatably travel along the rack gear 114 (as shown in FIG. 7 ) such that the height control member 104 is movable relative to the supporting tube 102 ; that is, the armrest (not shown) is movable relative to the supporting tube 102 .
  • the applying force F can be released such that the second controlling part 118 is returned to the engaging position by the elastic force E; meanwhile, the positioning block 150 ejects from the fixing slot 144 again and engages with a selected positioning groove 112 .
  • the guide gear 120 is engaged with the first transmission gear 122 , the first transmission gear 122 is engaged with the second transmission gear 124 , and the second transmission gear 124 is engaged with the third transmission gear 126 .
  • the third transmission gear 126 has a concentric pinion gear 127 integrally formed thereon and engaged with the driving gear 128 .
  • the transmission gears 122 , 124 , 126 and the driving gear 128 rotate in accordance with the rotation of the guide gear 120 .
  • the rotatable indicator 140 can rotate in accordance with the rotation of the guide gear 120 since it is connected to the rotatable pin 132 engaged with the driving gear 128 . Further, the peripheral surface around the opening 109 a of the housing 106 is marked with at least a sign, e.g. an arrow 162 as shown in FIG. 3 .
  • the guide gear 120 travels along the rack gear 114 , that is, the height control member 104 is moved relative to the supporting tube 102 , the rotatable indicator 140 rotates at the opening 109 a in accordance with the rotation of the guide gear 120 such that the numerals 142 is moved relative to the arrow 162 .
  • the position of the height control member 104 relative to the supporting tube 102 i.e. the height of the armrest (not shown) relative to the supporting tube 102
  • the numerals 142 is pointed by the arrow 162 .

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)
US11/193,380 2005-07-05 2005-08-01 Adjustable armrest assembly Abandoned US20070024100A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
TW094122674A TWI280110B (en) 2005-07-05 2005-07-05 Adjustable armrest assembly
GB0514411A GB2428186B (en) 2005-07-05 2005-07-13 Adjustable armrest assembly
US11/193,380 US20070024100A1 (en) 2005-07-05 2005-08-01 Adjustable armrest assembly

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TW094122674A TWI280110B (en) 2005-07-05 2005-07-05 Adjustable armrest assembly
GB0514411A GB2428186B (en) 2005-07-05 2005-07-13 Adjustable armrest assembly
US11/193,380 US20070024100A1 (en) 2005-07-05 2005-08-01 Adjustable armrest assembly

Publications (1)

Publication Number Publication Date
US20070024100A1 true US20070024100A1 (en) 2007-02-01

Family

ID=49956628

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/193,380 Abandoned US20070024100A1 (en) 2005-07-05 2005-08-01 Adjustable armrest assembly

Country Status (3)

Country Link
US (1) US20070024100A1 (zh)
GB (1) GB2428186B (zh)
TW (1) TWI280110B (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080224526A1 (en) * 2007-03-16 2008-09-18 Po-Chuan Tsai Internally pulling type lift device for chair armrest
US20080309140A1 (en) * 2007-06-18 2008-12-18 Hsueh-Yu Ho Armrest adjusting device
US20110248542A1 (en) * 2010-04-13 2011-10-13 Po-Chuan Tsai Chair Armrest Assembly Having Adjustable Height
US9004603B1 (en) * 2014-03-30 2015-04-14 Chih-Wei Wang Armrest assembly for a chair
US9307839B2 (en) * 2012-12-31 2016-04-12 Sava Cvek Adjustable armrest
US9616785B2 (en) * 2014-01-09 2017-04-11 PAC Seating Systems, Inc. Infinitely vertically adjustable drop down armrest mechanism
US9700139B2 (en) * 2015-08-02 2017-07-11 Dongguan Kentec Office Seating Co., Ltd. Armrest structure for a chair
US10660445B2 (en) * 2018-10-24 2020-05-26 Tien Ching Fang Height adjustable chair armrest

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5769497A (en) * 1997-04-04 1998-06-23 Fusco Industrial Corporation Arm support structure
US5839786A (en) * 1997-06-06 1998-11-24 Stylex, Inc. Adjustable armrest
US6053579A (en) * 1996-12-27 2000-04-25 Haworth, Inc. Height-Adjustable chair arm assembly having cam-type adjusting mechanism
US6132001A (en) * 2000-02-08 2000-10-17 Su; Wen-Fa Adjustment device for an arm of a chair
US6283422B1 (en) * 1998-12-15 2001-09-04 Actuall B.V. Drive for mechanical adjustment of profile parts, piece of furniture, profile part and method for manufacturing a profile part
US6336680B1 (en) * 2001-07-05 2002-01-08 Ching-Yang Lee Height-adjustment mechanism for armrest
US6761410B2 (en) * 2002-07-05 2004-07-13 Ching-Yang Lee Gear-controlled height-adjusting mechanism for armrest of office chair
US6811224B2 (en) * 2002-10-09 2004-11-02 First Source Furniture Group Llc Chair with adjustable arms and/or back
US6974190B1 (en) * 2005-03-17 2005-12-13 Yu-Ching Hung Armrest adjustment mechanism
US6974189B2 (en) * 2003-12-30 2005-12-13 Hni Technologies Inc. Vertically adjustable chair armrest

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5620233A (en) * 1995-06-07 1997-04-15 Jami, Inc. Adjusting mechanism for selectively positioning chair components
DE20108247U1 (de) * 2001-05-16 2002-06-20 FROLI Kunststoffwerk Heinrich Fromme oHG, 33758 Schloß Holte-Stukenbrock Verstellmechanismus insbesondere für eine Armlehne eines Sitzmöbel
US6419323B1 (en) * 2001-05-25 2002-07-16 Jung-Hua Chu Elevation mechanism for armchair armrest
TW582242U (en) * 2003-06-02 2004-04-01 Fu Luong Hi Tech Co Ltd Adjustable armrest of chair
US6837545B1 (en) * 2003-09-22 2005-01-04 Hsueh Yu Ho Chair arm with an adjustable height

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6053579A (en) * 1996-12-27 2000-04-25 Haworth, Inc. Height-Adjustable chair arm assembly having cam-type adjusting mechanism
US5769497A (en) * 1997-04-04 1998-06-23 Fusco Industrial Corporation Arm support structure
US5839786A (en) * 1997-06-06 1998-11-24 Stylex, Inc. Adjustable armrest
US6283422B1 (en) * 1998-12-15 2001-09-04 Actuall B.V. Drive for mechanical adjustment of profile parts, piece of furniture, profile part and method for manufacturing a profile part
US6132001A (en) * 2000-02-08 2000-10-17 Su; Wen-Fa Adjustment device for an arm of a chair
US6336680B1 (en) * 2001-07-05 2002-01-08 Ching-Yang Lee Height-adjustment mechanism for armrest
US6761410B2 (en) * 2002-07-05 2004-07-13 Ching-Yang Lee Gear-controlled height-adjusting mechanism for armrest of office chair
US6811224B2 (en) * 2002-10-09 2004-11-02 First Source Furniture Group Llc Chair with adjustable arms and/or back
US6974189B2 (en) * 2003-12-30 2005-12-13 Hni Technologies Inc. Vertically adjustable chair armrest
US6974190B1 (en) * 2005-03-17 2005-12-13 Yu-Ching Hung Armrest adjustment mechanism

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080224526A1 (en) * 2007-03-16 2008-09-18 Po-Chuan Tsai Internally pulling type lift device for chair armrest
US7448687B2 (en) * 2007-03-16 2008-11-11 Po-Chuan Tsai Internally pulling type lift device for chair armrest
US20080309140A1 (en) * 2007-06-18 2008-12-18 Hsueh-Yu Ho Armrest adjusting device
US20110248542A1 (en) * 2010-04-13 2011-10-13 Po-Chuan Tsai Chair Armrest Assembly Having Adjustable Height
US8128172B2 (en) * 2010-04-13 2012-03-06 Po-Chuan Tsai Chair armrest assembly having adjustable height
US9307839B2 (en) * 2012-12-31 2016-04-12 Sava Cvek Adjustable armrest
US9616785B2 (en) * 2014-01-09 2017-04-11 PAC Seating Systems, Inc. Infinitely vertically adjustable drop down armrest mechanism
US9004603B1 (en) * 2014-03-30 2015-04-14 Chih-Wei Wang Armrest assembly for a chair
US9700139B2 (en) * 2015-08-02 2017-07-11 Dongguan Kentec Office Seating Co., Ltd. Armrest structure for a chair
US10660445B2 (en) * 2018-10-24 2020-05-26 Tien Ching Fang Height adjustable chair armrest

Also Published As

Publication number Publication date
GB2428186A (en) 2007-01-24
TWI280110B (en) 2007-05-01
TW200701911A (en) 2007-01-16
GB2428186B (en) 2009-12-30
GB0514411D0 (en) 2005-08-17

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CHAN, CHUN HUI, TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHAN, CHUN HUI;REEL/FRAME:016830/0942

Effective date: 20050705

Owner name: AQUALINK ENTERPRISES CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHAN, CHUN HUI;REEL/FRAME:016830/0942

Effective date: 20050705

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE