WO2012092767A1 - A collapsible chair - Google Patents

A collapsible chair Download PDF

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Publication number
WO2012092767A1
WO2012092767A1 PCT/CN2011/078237 CN2011078237W WO2012092767A1 WO 2012092767 A1 WO2012092767 A1 WO 2012092767A1 CN 2011078237 W CN2011078237 W CN 2011078237W WO 2012092767 A1 WO2012092767 A1 WO 2012092767A1
Authority
WO
WIPO (PCT)
Prior art keywords
pair
bars
pivotally linked
backrest
seat
Prior art date
Application number
PCT/CN2011/078237
Other languages
French (fr)
Inventor
Libin Chen
Original Assignee
Libin Chen
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 Libin Chen filed Critical Libin Chen
Publication of WO2012092767A1 publication Critical patent/WO2012092767A1/en

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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
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/32—Folding chairs with flexible coverings for the seat or back elements having a frame made of wood or plastics
    • A47C4/34—Folding chairs with flexible coverings for the seat or back elements having a frame made of wood or plastics with legs pivotably connected to seat or underframe
    • A47C4/38—Folding chairs with flexible coverings for the seat or back elements having a frame made of wood or plastics with legs pivotably connected to seat or underframe with cross legs
    • A47C4/40—Folding chairs with flexible coverings for the seat or back elements having a frame made of wood or plastics with legs pivotably connected to seat or underframe with cross legs of adjustable type
    • 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
    • A47C1/0265—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 positioned under the arm-rests
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/286—Folding chairs with flexible coverings for the seat or back elements foldable side to side and front to back, e.g. umbrella type

Definitions

  • the invention relates to a collapsible chair, and more particularly, to a simply operable collapsible chair a backrest portion of which is simply adjustable with a user sitting on a seat portion thereof.
  • Collapsible chairs having a foldable frame and a soft panel attached to the frame have long been developed. They are able to be folded for saving storage space. Early collapsible chairs need a relative complex process of folding and expanding. They often require two hands and several steps. Some recent collapsible chairs have been improved and need only one hand and one step of action of user to either fold or expand the chairs. However, backrest adjustment of such simply operable collapsible chairs is still an untackled problem. It is desirable for users a one step operation collapsible chair having an adjustable backrest simply operable when a user is sitting on the chair.
  • the main object of the invention is to provide a simply operable collapsible chair having an adjustable backrest portion which is simply operable when a user is sitting on a seat portion thereof.
  • the present invention provides a collapsible chair having a frame and a soft panel attached to the frame.
  • the soft panel has a backrest portion and a seat portion.
  • the frame has a pair of front legs each having an upper end, a pair of joints to each of which the upper end of one of the pair of front legs pivotally linked, a pair of rear legs each having an upper end pivotally linked to one of the joints, a pair of seat bars each pivotally linked to respective front leg with a pin, a pair of sleeves each pivotally linked to one of the two seat bars and each slidably containing one rear leg, a pair of backrest bars each pivotally linked to respective seat bar with a link, a pair of armrest bars each having a rear end pivotally linked to each backrest bar, a pair of front scissoring bars lower ends thereof being respectively pivotally linked to the lower end of each front leg and upper ends thereof being respectively pivotally linked to a front end of each seat bar, a pair of slide blocks each being able to slide
  • the collapsible chair is simply operable with at least one hand and the user does not have to stand up during the whole process of the above adjustment.
  • Fig. 1 is a perspective view of the preferred embodiment of the collapsible chair of the invention.
  • Fig. 2 is another perspective view of the collapsible chair shown in Fig. 1 with a soft panel thereof being removed for illustration.
  • Figs. 3a through 3c are partially enlarged views thereof.
  • Fig. 4 is a perspective view of the collapsible chair shown in Fig. 1 showing an operation of an adjustable backrest portion thereof.
  • Fig. 5 is a perspective view of the collapsible chair shown in Fig. 1 showing a folded frame thereof.
  • Fig. 1 Shown in Fig. 1 is the preferred embodiment of the collapsible chair of the invention.
  • the collapsible chair has a frame 1 and a soft panel 2 securely attached to the frame 1.
  • the soft panel 2 has a backrest portion 21 and a seat portion 22.
  • the frame 1 has a pair of front legs 10a and 10b each having an upper end, a pair of joints 12a and 12b to each of which the upper end of one of the pair of front legs 10a or 10b pivotally linked, a pair of rear legs 11a and 11b each having an upper end pivotally linked to one of the two joints 12a or 12b, a pair of seat bars 13a and 13b each pivotally linked to respective front leg 10a and 10b with a pin 130a or 130b, a pair of sleeves 131a and 131b each pivotally linked to one of the two seat bars 13a and 13b and each slidably containing one rear leg 11a or 11b, a pair of backrest bars 14a and 14b each pivotally linked to respective seat bar 13a and 13b with a link 140a and 140b, a pair of armrest bars 15a and 15b each having a rear end pivotally linked to each backrest bar 14a or 14
  • a user is able to expand the collapsible chair by holding one of the two backrest bars 14a or 14b with one hand and shaking up and down one time.
  • the pair of seat bars 13a and 13b will rotate downward round each link 140a and 140b.
  • the pair of front legs 10a and 10b will rotate forward round each pin 130a and 130b.
  • the pair of front scissoring bars 16a and 16b expands and the two seat bars 13a and 13b departure with respect to each other.
  • the rear scissoring bars 18a and 18b expand until the linking poles 191 and 192 of the latch 19 are pulled to straight, as shown in Fig. 3.
  • the latch 19 may further has at least one protrusion 193 or 194 formed on one of the two linking poles 191 or 192.
  • the protrusion is used to prevent the linking poles 191 or 192 from rotating downward after they have been pulled to straight.
  • the latch 19 has two protrusions 193 or 194 each formed on one linking pole 191 or 192.
  • the user while sitting on the seat portion 22, is able to first uplift the pair of armrest bars 15a and 15b making the notch 153a and 153b leave the respective positioning pin 151a and 151b and move the pair of armrest bars 15a and 15b forward or backward.
  • the pair of backrest bars 14a and 14b will rotate round the link 140a and 140b and the slide blocks 17a and 17b will slide along the backrest bars 14a and 14b, respectively.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

A collapsible chair has a frame (1) and a soft panel (2) attached to the frame (1). The frame (1) has a pair of front legs (10a,10b), rear legs (11a,11b), seat bars (13a,13b), sleeves (131a,131b), backrest bars (14a,14b), armrest bars (15a,15b), front scissoring bars (16a,16b), slide blocks (17a,17b), rear scissoring bars (18a,18b), backrest adjustment devices (150a,150b) each having at least one positioning pin (151a,151b) securely formed on one joint (12a,12b) and one corresponding guiding groove (152a,152b) being securely fixed to each armrest bar (15a,15b) and having a plurality of notches (153a,153b) for accommodating each positioning pin (151a,151b), and a latch (19) having two pivotally linking poles (191,192) each pivotally linked to one of the two rear scissoring bars (18a, 18b). The collapsible chair is simply operable and the backrest portion of which is simply adjustable with a user sitting on a seat portion thereof.

Description

A COLLAPSIBLE CHAIR 技术领域
The invention relates to a collapsible chair, and more particularly, to a simply operable collapsible chair a backrest portion of which is simply adjustable with a user sitting on a seat portion thereof.
背景技术
Collapsible chairs having a foldable frame and a soft panel attached to the frame have long been developed. They are able to be folded for saving storage space. Early collapsible chairs need a relative complex process of folding and expanding. They often require two hands and several steps. Some recent collapsible chairs have been improved and need only one hand and one step of action of user to either fold or expand the chairs. However, backrest adjustment of such simply operable collapsible chairs is still an untackled problem. It is desirable for users a one step operation collapsible chair having an adjustable backrest simply operable when a user is sitting on the chair.
技术问题
The main object of the invention is to provide a simply operable collapsible chair having an adjustable backrest portion which is simply operable when a user is sitting on a seat portion thereof.
技术解决方案
In order to accomplish the above objects, the present invention provides a collapsible chair having a frame and a soft panel attached to the frame. The soft panel has a backrest portion and a seat portion. The frame has a pair of front legs each having an upper end, a pair of joints to each of which the upper end of one of the pair of front legs pivotally linked, a pair of rear legs each having an upper end pivotally linked to one of the joints, a pair of seat bars each pivotally linked to respective front leg with a pin, a pair of sleeves each pivotally linked to one of the two seat bars and each slidably containing one rear leg, a pair of backrest bars each pivotally linked to respective seat bar with a link, a pair of armrest bars each having a rear end pivotally linked to each backrest bar, a pair of front scissoring bars lower ends thereof being respectively pivotally linked to the lower end of each front leg and upper ends thereof being respectively pivotally linked to a front end of each seat bar, a pair of slide blocks each being able to slide along respective backrest bar, a pair of rear scissoring bars lower ends thereof being respectively pivotally linked to a rear end of each seat bar and upper ends thereof being respectively pivotally linked to each slide block, a pair of backrest adjustment devices each having at least one positioning pin securely formed on one joint and one corresponding guiding groove being securely fixed to each armrest bar and having a plurality of notches for accommodating each positioning pin, and a latch having two pivotally linking poles each pivotally linked to one of the two rear scissoring bars.
有益效果
The collapsible chair is simply operable with at least one hand and the user does not have to stand up during the whole process of the above adjustment.
附图说明
Fig. 1 is a perspective view of the preferred embodiment of the collapsible chair of the invention.
Fig. 2 is another perspective view of the collapsible chair shown in Fig. 1 with a soft panel thereof being removed for illustration.
Figs. 3a through 3c are partially enlarged views thereof.
Fig. 4 is a perspective view of the collapsible chair shown in Fig. 1 showing an operation of an adjustable backrest portion thereof. And,
Fig. 5 is a perspective view of the collapsible chair shown in Fig. 1 showing a folded frame thereof.
 本发明的最佳实施方式
Shown in Fig. 1 is the preferred embodiment of the collapsible chair of the invention. The collapsible chair has a frame 1 and a soft panel 2 securely attached to the frame 1. The soft panel 2 has a backrest portion 21 and a seat portion 22. Together with reference to Figs. 2, 3a, 3b and 3c, in which the soft panel 2 is removed for better illustration of the frame 1, the frame 1 has a pair of front legs 10a and 10b each having an upper end, a pair of joints 12a and 12b to each of which the upper end of one of the pair of front legs 10a or 10b pivotally linked, a pair of rear legs 11a and 11b each having an upper end pivotally linked to one of the two joints 12a or 12b, a pair of seat bars 13a and 13b each pivotally linked to respective front leg 10a and 10b with a pin 130a or 130b, a pair of sleeves 131a and 131b each pivotally linked to one of the two seat bars 13a and 13b and each slidably containing one rear leg 11a or 11b, a pair of backrest bars 14a and 14b each pivotally linked to respective seat bar 13a and 13b with a link 140a and 140b, a pair of armrest bars 15a and 15b each having a rear end pivotally linked to each backrest bar 14a or 14b, a pair of front scissoring bars 16a and 16b lower ends thereof being respectively pivotally linked to the lower end of each front leg 10a or 10b and upper ends thereof being respectively pivotally linked to a front end of each seat bar 13a or 13b, a pair of slide blocks 17a and 17b each being able to slide along respective backrest bar 14a or 14b, a pair of rear scissoring bars 18a and 18b lower ends thereof being respectively pivotally linked to a rear end of each seat bar 13a or 13b and upper ends thereof being respectively pivotally linked to each slide block 17a or 17b, a pair of backrest adjustment devices 150a and 150b each having at least one positioning pin 151a or 151b securely formed on one joint 12a or 12b and one corresponding guiding groove 152a or 152b being securely fixed to each armrest bar 15a or 15b and having a plurality of notches 153a or 153b for accommodating each positioning pin 151a or 151b, and a latch 19 having two pivotally linking poles 191 and 192 each pivotally linked to one of the two rear scissoring bars 18a or 18b.
In use, a user is able to expand the collapsible chair by holding one of the two backrest bars 14a or 14b with one hand and shaking up and down one time. The pair of seat bars 13a and 13b will rotate downward round each link 140a and 140b. The pair of front legs 10a and 10b will rotate forward round each pin 130a and 130b. The pair of front scissoring bars 16a and 16b expands and the two seat bars 13a and 13b departure with respect to each other. Then the rear scissoring bars 18a and 18b expand until the linking poles 191 and 192 of the latch 19 are pulled to straight, as shown in Fig. 3. In folding, the user is able to stand behind the collapsible chair and grasp one backrest bar 14a or 14b with one hand. By keeping one rear leg 11a or 11b of the same side with the held backrest bar 14a or 14b in touching ground, the user is able to incline the whole chair backward and the chair will collapse under its own gravity. The folded collapsible chair is as shown in Fig. 6. The user is surely able to fold the chair more efficiently with two hands. As particularly shown in Fig. 3c, the latch 19 may further has at least one protrusion 193 or 194 formed on one of the two linking poles 191 or 192. The protrusion is used to prevent the linking poles 191 or 192 from rotating downward after they have been pulled to straight. In the shown embodiment, the latch 19 has two protrusions 193 or 194 each formed on one linking pole 191 or 192.
Particularly with reference to Fig. 5, the user, while sitting on the seat portion 22, is able to first uplift the pair of armrest bars 15a and 15b making the notch 153a and 153b leave the respective positioning pin 151a and 151b and move the pair of armrest bars 15a and 15b forward or backward. The pair of backrest bars 14a and 14b will rotate round the link 140a and 140b and the slide blocks 17a and 17b will slide along the backrest bars 14a and 14b, respectively. Until the user select a desired position of the backrest portion 21, he is able to press the armrest bars 15a and 15b down making the positioning pin 151a and 151b enter one notch 153a and 153b respectively and the pair of armrest bars 15a and 15b will no longer moveable. The user does not have to stand up during the whole process of the above adjustment.

Claims (1)

1. A collapsible chair comprising a frame and a soft panel attached to the frame,
the soft panel having a backrest portion and a seat portion, and,
the frame having a pair of front legs each having an upper end, a pair of joints to each of which the upper end of one of the pair of front legs pivotally linked, a pair of rear legs each having an upper end pivotally linked to one of said joints, a pair of seat bars each pivotally linked to respective front leg with a pin, a pair of sleeves each pivotally linked to one of the two seat bars and each slidably containing one rear leg, a pair of backrest bars each pivotally linked to respective seat bar with a link, a pair of armrest bars each having a rear end pivotally linked to each backrest bar, a pair of front scissoring bars lower ends thereof being respectively pivotally linked to the lower end of each front leg and upper ends thereof being respectively pivotally linked to a front end of each seat bar, a pair of slide blocks each being able to slide along respective backrest bar, a pair of rear scissoring bars lower ends thereof being respectively pivotally linked to a rear end of each seat bar and upper ends thereof being respectively pivotally linked to each slide block, a pair of backrest adjustment devices each having at least one positioning pin securely formed on one joint and one corresponding guiding groove being securely fixed to each armrest bar and having a plurality of notches for accommodating each positioning pin, and, a latch having two pivotally linking poles each pivotally linked to one of the two rear scissoring bars.
PCT/CN2011/078237 2011-01-06 2011-08-11 A collapsible chair WO2012092767A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/985,343 2011-01-06
US12/985,343 US20120175917A1 (en) 2011-01-06 2011-01-06 Collapsible chair

Publications (1)

Publication Number Publication Date
WO2012092767A1 true WO2012092767A1 (en) 2012-07-12

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ID=46454694

Family Applications (1)

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PCT/CN2011/078237 WO2012092767A1 (en) 2011-01-06 2011-08-11 A collapsible chair

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US (1) US20120175917A1 (en)
WO (1) WO2012092767A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104856487A (en) * 2014-11-14 2015-08-26 陈德隆 foldable chair frame
WO2017221219A1 (en) * 2016-06-24 2017-12-28 Borden William Joseph Jr Collapsible chair with two legs

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US9103138B2 (en) 2012-10-02 2015-08-11 Bravo Sports Sliding-eave mount mechanism for canopy structure
CN104838076B (en) 2012-12-07 2017-04-05 布里福运动公司 Shade type covers
CN203041404U (en) 2012-12-18 2013-07-10 浙江泰普森休闲用品有限公司 Support frame of folding chair and adjustable-back folding chair
US8894139B1 (en) 2013-06-22 2014-11-25 Rambling Raven Designs, Ltd Collapsible lightweight hammock chair
USD736884S1 (en) 2013-07-16 2015-08-18 Bravo Sports Adjustable locking leg assembly
US9528292B1 (en) 2013-08-09 2016-12-27 Bravo Sports Canopy with overhang
US9797157B2 (en) 2014-03-04 2017-10-24 Shelterlogic Corp. Canopy with detachable awning
USD737066S1 (en) 2014-03-06 2015-08-25 Bravo Sports Chair with integrated shade cover
CN203897799U (en) 2014-06-17 2014-10-29 浙江泰普森休闲用品有限公司 Folding chair and side table thereof
WO2016100315A1 (en) * 2014-12-15 2016-06-23 Bravo Sports Foldable chair
CN204654310U (en) * 2015-03-31 2015-09-23 浙江泰普森创意设计有限公司 The folding seat of Armrest
US9930966B2 (en) * 2016-08-03 2018-04-03 Zhejiang Hengfeng Top Leisure Co., Ltd. Compact collapsible chair
AU2020287097B2 (en) * 2019-06-04 2023-10-26 Yeti Coolers, Llc Portable chair
US11659930B1 (en) * 2021-11-22 2023-05-30 Te-Lung Chen Foldable chair

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CN2115008U (en) * 1992-04-15 1992-09-09 南海县平洲恒华塑料五金电器厂 Sitting and lying folding chair
CN2417780Y (en) * 1999-11-05 2001-02-07 徐高发 Multipurpose folding chair
CN2520752Y (en) * 2001-11-16 2002-11-20 厦门进雄企业有限公司 Dismounting armrest adjustable folding chair
CN2617252Y (en) * 2003-04-21 2004-05-26 常州市侨裕集团有限公司 Portable foldable chair
CN2634929Y (en) * 2003-06-05 2004-08-25 厦门进雄企业有限公司 Simple and fully folding chair frame
CN2659245Y (en) * 2003-06-05 2004-12-01 厦门进雄企业有限公司 Fully folding lie fallow chair frame
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Publication number Priority date Publication date Assignee Title
CN104856487A (en) * 2014-11-14 2015-08-26 陈德隆 foldable chair frame
CN104856487B (en) * 2014-11-14 2018-05-15 陈德隆 foldable chair frame
WO2017221219A1 (en) * 2016-06-24 2017-12-28 Borden William Joseph Jr Collapsible chair with two legs

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