US20080079307A1 - Chair Backrest - Google Patents

Chair Backrest Download PDF

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Publication number
US20080079307A1
US20080079307A1 US11/538,289 US53828906A US2008079307A1 US 20080079307 A1 US20080079307 A1 US 20080079307A1 US 53828906 A US53828906 A US 53828906A US 2008079307 A1 US2008079307 A1 US 2008079307A1
Authority
US
United States
Prior art keywords
frame
net
fixing
loop
supporting
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
US11/538,289
Other languages
English (en)
Inventor
Tung-Hua Su
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 CNU2006200653704U priority Critical patent/CN200953958Y/zh
Application filed by Individual filed Critical Individual
Priority to US11/538,289 priority patent/US20080079307A1/en
Publication of US20080079307A1 publication Critical patent/US20080079307A1/en
Abandoned 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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/28—Seat parts with tensioned springs, e.g. of flat type
    • A47C7/282—Seat parts with tensioned springs, e.g. of flat type with mesh-like supports, e.g. elastomeric membranes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/02—Upholstery attaching means
    • A47C31/023—Upholstery attaching means connecting upholstery to frames, e.g. by hooks, clips, snap fasteners, clamping means or the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back

Definitions

  • the present invention relates to a chair backrest.
  • a backrest with a net which provides stronger support against forces applied, and an enhanced stability in frame-net assembly, along with significant ventilation, sustained elasticity, and substantial durability of the net.
  • a disadvantage of conventional backrests made with an outer surface of cloth or leather is the lack of ventilation, resulting in a sweaty situation for a chair occupant after sitting on for some time.
  • Some improved conventional backrests are equipped with a ventilated soft net, and a loop frame made of hard plastics.
  • the ventilating net is then installed in its associated loop frame by connecting pieces (such as a metal plate) along the edge or end portions of the net, the disadvantage of which includes:
  • This invention features a backrest with four main components: (1) a loop-like frame made of hard plastics, (2) an elastic latticed net, (3) a frame cover, and (4) a pair of frame supporting arms.
  • a preferred embodiment in this invention has a net locked in closely with an ergonomically configured frame, armored with a curved-V shape supporting-arms, and a back-reinforcement board traversing the right and left side of the frame to prevent the frame from being deformed or ruptured. Furthermore, to prevent the net from coming off the frame which it is originally engaged to, a fixing loop and a frame cover are used to secure the border of the net onto the frame.
  • the outer front-most periphery of the frame (facing toward a chair occupant's back) protrudes out of the frame, together with the opposing outer back-most periphery of the frame, defining a loop-like frame-net contact area, which has a sharp angle.
  • the border of the net is secured onto the frame-net contact area by a fixing loop placed on its top.
  • a frame cover configured in a way to fit onto the frame, is installed over the frame-net interface, hemming in (within its inner confine) both the net border and the net fixing loop underneath.
  • FIG. 1 is an exploded perspective front view of a chair backrest in accordance with the present invention.
  • FIG. 2 is an exploded perspective rear view of a chair backrest in accordance with the present invention.
  • FIG. 3 is a perspective front view of the frame and the latticed net in assembly, with a net fixing loop (shown in darkened dashed line) mounting on top of the net.
  • FIG. 4 is a perspective assembly front view of a chair backrest in accordance with the present invention.
  • FIG. 5 is a perspective assembly rear view of a chair backrest in accordance with the present invention.
  • FIG. 6 is a side cross-sectional assembly view of a chair backrest in accordance with the present invention, with two partially enlarged views.
  • a backrest in accordance with the present invention generally comprises a frame 1 , a latticed net 2 , a frame cover 3 , and supporting arms 4 .
  • the frame 1 is made from hard plastics in the shape of a loop tilting outwardly in the lower back portion thereof.
  • a back-reinforcement board 11 traversing between the left and the right side of the frame 1 .
  • the back-reinforcement board curves toward the rear of the frame and comprises ventilating bores 111 .
  • the frame 1 is further intensified by the back reinforcement board 11 . As a result, the elastic tension of the net 2 installed over the frame 1 is also enhanced.
  • the loop-like front edge 12 of the frame 1 protrudes outwards (facing a chair occupant) and defines a frame-net interface 13 , the shape of which at any point of the frame has a sharp angle like a mirror image of L (such as “ ⁇ ”), an upside-down L (such as “ ⁇ ”), or an upside-down and mirrored image of L (such as “ ⁇ ”), depending on different sections of the frame concerned.
  • the loop-like front edge 12 curves smoothly at the two upper corners.
  • the frame-net interface 13 is further perforated with a couple of frame-net fixing holes 14 , through which fasteners extend.
  • the frame-arm fixing section 15 is each positioned on the right and left side of the rear of the frame 1 , declining slightly inwardly toward the lower center of the frame 1 .
  • the supporting arms 4 is assembled to the frame 1 .
  • Each of the frame-arm fixing section 15 includes a frame-pole fixing groove 151 for engaging with each of the two supporting poles; the frame-pole fixing groove 151 is formed with frame-pole fixing bores 152 for locking the supporting pole 41 with the frame-arm fixing device 15 , and hence the frame 1 .
  • the latticed net is made from soft materials with its border contacting the frame-net interface 13 secured by a net fixing loop 5 .
  • the net fixing loop 5 can be replaced by any equivalent device for nailing the net 2 onto the frame 1 .
  • the frame cover 3 is configured in a loop for mounting onto the frame 1 , with both the border of the lattice net 2 and the net fixing loop 5 enclosed under the inner side thereof. Furthermore, a suppressing lock 31 juts out along the inner surface of the frame cover 3 to suppress in position both the border of the net 2 and the net fixing loop 5 .
  • Frame cover fixing bores 32 are configured on the frame cover 3 at locations corresponding to where the frame-net fixing holes 14 of the frame 1 are formed.
  • Supporting arms 4 comprises two supporting poles 41 , an arm base plate 42 , and frame-arm fixing pieces 43 .
  • the pair of supporting poles 41 is made of metal, shaped like a curved-V.
  • the metal arm base plate 42 at the lower ends of the supporting poles 41 connects to a chair seat (not shown in the figures).
  • On the upper portion of the supporting poles 41 are formed frame-arm fixing bores 411 .
  • the frame-arm fixing piece 43 defines a pole-fixing grooves 431 and are formed with pole fixing holes 432 in it for engaging supporting arms 4 to the frame 1 .
  • a latticed net 2 first mounts over the frame-net interface 13 of the frame 1 , secured to the frame 1 by a fixing loop 5 . Since a net 2 is supported by a projecting loop-like front edge 12 , it is empowered with quite durable elasticity. Likewise, by having a sharp angle inside the frame-net interface 13 , the net fixing loop 5 functions as a even stronger fastener in engaging the net 2 to the frame-net interface 13 .
  • a frame cover 3 mounts on top of the frame 1 , covering the frame-net interface 3 completely.
  • Fasteners such as screws
  • the backrest after complete assembly gives a single-piece elegant look.
  • a suppressing loop 31 of a frame cover 3 provides an extra force to stabilize the net 2 and the fixing loop 5 , and thereby to better secure them onto the frame-net interface 13 .
  • the upper ends of the pair of supporting poles 41 of supporting arms 4 are each assembled inside the frame-pole fixing groove 151 .
  • a fastener such as a screw
  • the frame 1 is armored by the supporting arms 4 against deformation or rupture (due to heavy weights or temperature changes), which in turns upholds the elastic tension of the net 2 .
US11/538,289 2006-09-30 2006-10-03 Chair Backrest Abandoned US20080079307A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNU2006200653704U CN200953958Y (zh) 2006-09-30 2006-09-30 座椅椅背
US11/538,289 US20080079307A1 (en) 2006-09-30 2006-10-03 Chair Backrest

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNU2006200653704U CN200953958Y (zh) 2006-09-30 2006-09-30 座椅椅背
US11/538,289 US20080079307A1 (en) 2006-09-30 2006-10-03 Chair Backrest

Publications (1)

Publication Number Publication Date
US20080079307A1 true US20080079307A1 (en) 2008-04-03

Family

ID=49919133

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/538,289 Abandoned US20080079307A1 (en) 2006-09-30 2006-10-03 Chair Backrest

Country Status (2)

Country Link
US (1) US20080079307A1 (zh)
CN (1) CN200953958Y (zh)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110057497A1 (en) * 2009-09-08 2011-03-10 Tsan-Ching Wang Combination of net and frame
US20110198907A1 (en) * 2008-10-16 2011-08-18 Hiroshi Masunaga Chair
US20120313419A1 (en) * 2010-02-10 2012-12-13 Okamura Corporation Stretching structure of chair upholstery material
JP2013183748A (ja) * 2012-03-05 2013-09-19 Kokuyo Furniture Co Ltd 椅子
US20140054947A1 (en) * 2012-08-22 2014-02-27 Tung-Hua Su Backrest assembly with front and rear frames
US20140077548A1 (en) * 2012-09-20 2014-03-20 Steelcase Inc. Chair assembly with upholstery covering
US20140139003A1 (en) * 2012-11-19 2014-05-22 Nhk Spring Co., Ltd. Vehicle seat
EP2939568A1 (en) * 2008-12-12 2015-11-04 Formway Furniture Limited A chair, a support, and components
US20160135603A1 (en) * 2013-06-06 2016-05-19 Itoki Corporation Chair
US9463727B2 (en) * 2014-08-14 2016-10-11 Honda Motor Co., Ltd. Vehicle seat covering assembly
AU2015252092B2 (en) * 2008-12-12 2017-05-04 Formway Furniture Limited A chair, a support, and components
JP2017113464A (ja) * 2015-12-25 2017-06-29 株式会社イトーキ 椅子
US20170354256A1 (en) * 2016-06-09 2017-12-14 Steelcase Inc. Seating Arrangement
US10239421B2 (en) * 2016-09-15 2019-03-26 Toyota Jidosha Kabushiki Kaisha Vehicle seat
IT201800003893A1 (it) * 2018-03-22 2019-09-22 Donati Spa Metodo per la realizzazione di un sedile in rete
US20190290008A1 (en) * 2018-03-24 2019-09-26 Chih-Cheng Su Assembling structure of support device of a chair
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11229294B2 (en) 2012-09-20 2022-01-25 Steelcase Inc. Chair assembly with upholstery covering
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201767475U (zh) * 2010-03-03 2011-03-23 区赞勋 整体成型式办公椅用网框件

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6550866B1 (en) * 2002-01-24 2003-04-22 Tung-Hua Su Chair backrest with ventilating function
US6729691B2 (en) * 2001-06-15 2004-05-04 Hon Technology, Inc. Chair back construction
US20040124689A1 (en) * 2002-07-23 2004-07-01 Okumura Corporation Structure for mounting a net member to a frame for a seat or backrest of a chair
US20050057085A1 (en) * 2003-09-12 2005-03-17 Hsiu-Hsueh Wu Backrest and method for making backrest
US20050242652A1 (en) * 2002-05-15 2005-11-03 Kepler Brian D Adjustable attachment and tensioning assembly for the suspension of a seat assembly
US7066550B1 (en) * 2005-05-10 2006-06-27 Tung-Hua Su Seat assembly for chair
US20070170756A1 (en) * 2006-01-25 2007-07-26 Ming-Shiang Kang Chair seat and back structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6729691B2 (en) * 2001-06-15 2004-05-04 Hon Technology, Inc. Chair back construction
US6550866B1 (en) * 2002-01-24 2003-04-22 Tung-Hua Su Chair backrest with ventilating function
US20050242652A1 (en) * 2002-05-15 2005-11-03 Kepler Brian D Adjustable attachment and tensioning assembly for the suspension of a seat assembly
US20040124689A1 (en) * 2002-07-23 2004-07-01 Okumura Corporation Structure for mounting a net member to a frame for a seat or backrest of a chair
US20050057085A1 (en) * 2003-09-12 2005-03-17 Hsiu-Hsueh Wu Backrest and method for making backrest
US7066550B1 (en) * 2005-05-10 2006-06-27 Tung-Hua Su Seat assembly for chair
US20070170756A1 (en) * 2006-01-25 2007-07-26 Ming-Shiang Kang Chair seat and back structure

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110198907A1 (en) * 2008-10-16 2011-08-18 Hiroshi Masunaga Chair
EP2939568A1 (en) * 2008-12-12 2015-11-04 Formway Furniture Limited A chair, a support, and components
AU2015252092B2 (en) * 2008-12-12 2017-05-04 Formway Furniture Limited A chair, a support, and components
US20110057497A1 (en) * 2009-09-08 2011-03-10 Tsan-Ching Wang Combination of net and frame
US20120313419A1 (en) * 2010-02-10 2012-12-13 Okamura Corporation Stretching structure of chair upholstery material
US8777321B2 (en) * 2010-02-10 2014-07-15 Okamura Corporation Stretching structure of chair upholstery material
JP2013183748A (ja) * 2012-03-05 2013-09-19 Kokuyo Furniture Co Ltd 椅子
US20140054947A1 (en) * 2012-08-22 2014-02-27 Tung-Hua Su Backrest assembly with front and rear frames
US20140077548A1 (en) * 2012-09-20 2014-03-20 Steelcase Inc. Chair assembly with upholstery covering
US11464341B2 (en) 2012-09-20 2022-10-11 Steelcase Inc. Chair assembly with upholstery covering
US8998339B2 (en) * 2012-09-20 2015-04-07 Steelcase Inc. Chair assembly with upholstery covering
US11229294B2 (en) 2012-09-20 2022-01-25 Steelcase Inc. Chair assembly with upholstery covering
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US10842281B2 (en) * 2012-09-20 2020-11-24 Steelcase Inc. Control assembly for chair
US20190133326A1 (en) * 2012-09-20 2019-05-09 Steelcase Inc. Control assembly for chair
US9073469B2 (en) * 2012-11-19 2015-07-07 Toyota Boshoku Kabushiki Kaisha Vehicle seat
US20140139003A1 (en) * 2012-11-19 2014-05-22 Nhk Spring Co., Ltd. Vehicle seat
US20160135603A1 (en) * 2013-06-06 2016-05-19 Itoki Corporation Chair
US9463727B2 (en) * 2014-08-14 2016-10-11 Honda Motor Co., Ltd. Vehicle seat covering assembly
JP2017113464A (ja) * 2015-12-25 2017-06-29 株式会社イトーキ 椅子
US20170354256A1 (en) * 2016-06-09 2017-12-14 Steelcase Inc. Seating Arrangement
US10463153B2 (en) * 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
US10813459B2 (en) 2016-06-09 2020-10-27 Steelcase Inc. Seating arrangement
US10239421B2 (en) * 2016-09-15 2019-03-26 Toyota Jidosha Kabushiki Kaisha Vehicle seat
IT201800003893A1 (it) * 2018-03-22 2019-09-22 Donati Spa Metodo per la realizzazione di un sedile in rete
US10477972B2 (en) * 2018-03-24 2019-11-19 Dongguan Kentec Office Seating Co., Ltd. Assembling structure of support device of a chair
US20190290008A1 (en) * 2018-03-24 2019-09-26 Chih-Cheng Su Assembling structure of support device of a chair
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11602223B2 (en) 2019-02-21 2023-03-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11910934B2 (en) 2019-02-21 2024-02-27 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11786039B2 (en) 2019-12-13 2023-10-17 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11805913B2 (en) 2019-12-13 2023-11-07 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Also Published As

Publication number Publication date
CN200953958Y (zh) 2007-10-03

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STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION