WO2020171336A1 - Chaise dotée d'un dossier pouvant subir une torsion - Google Patents

Chaise dotée d'un dossier pouvant subir une torsion Download PDF

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Publication number
WO2020171336A1
WO2020171336A1 PCT/KR2019/013486 KR2019013486W WO2020171336A1 WO 2020171336 A1 WO2020171336 A1 WO 2020171336A1 KR 2019013486 W KR2019013486 W KR 2019013486W WO 2020171336 A1 WO2020171336 A1 WO 2020171336A1
Authority
WO
WIPO (PCT)
Prior art keywords
backrest
chair
twistable
armrest
elastic member
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.)
Ceased
Application number
PCT/KR2019/013486
Other languages
English (en)
Korean (ko)
Inventor
이규윤
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.)
DAWON CHAIRS Co Ltd
Original Assignee
DAWON CHAIRS 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
Application filed by DAWON CHAIRS Co Ltd filed Critical DAWON CHAIRS Co Ltd
Publication of WO2020171336A1 publication Critical patent/WO2020171336A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted frame
    • A47C7/448—Supports for the head or the back for the back with elastically-mounted frame with resilient blocks
    • 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
    • A47C7/54—Supports for the arms

Definitions

  • the present invention relates to a chair capable of flexibly supporting a user according to a sitting posture of the backrest.
  • the chair is largely composed of a seat plate, a leg, and a back, and is used for a user to sit and perform various tasks.
  • Chairs are used to sit and study in schools, academies, and libraries, or to sit and work in offices and conference rooms of companies. Students use chairs to study, office workers to work, and for long periods of time.
  • the chair has a function of adjusting the height of the seat or the angle of the backrest so that the user can sit comfortably for a long time according to the user's usage environment or posture.
  • the backrest is adjusted between the seat plate and the obtuse angle at an angle perpendicular to the seat plate. Since the backrest tilts only in the forward and backward directions, the user can only move backwards while leaning against the backrest.
  • the user sits in a chair and moves in the left and right directions as well as the front and rear directions. If you sit for a long time, the user's posture may change continuously.
  • An object of the present invention is to provide a chair with a high degree of freedom of a backrest supporting a user's back so that a user can respond flexibly even if a user unconsciously changes his posture.
  • An object of the present invention is to provide a chair capable of twisting a chair without causing torsion or friction noise and material wear by combining a backrest and an armrest with an elastic member.
  • a leg portion including a support member and a leg attached to the lower portion of the support member, a seat member installed on the upper portion of the support member to support the user's hip, and tilting at both ends of the support member It provides a chair having an armrest that is installed to be able to be installed and a backrest that is coupled to the armrest so as to be movable integrally with the armrest, and the backrest and the armrest have a twistable backrest that is coupled through an elastic member as a medium.
  • the elastic member can be retracted, so that the backrest is provided with a twistable backrest that can be twisted in a left or right direction in which the user leans at the same time.
  • the elastic member provides a chair having a twistable back including a coupling receiving groove formed on a surface coupled to the armrest and a locking protrusion formed on a surface coupled to the backrest.
  • One end of the armrest is installed on the support member, and the other end has an armrest having a certain width to support the user's arm, and a twistable backrest having a coupling protrusion through which the coupling receiving groove is fastened.
  • an armrest having a certain width to support the user's arm
  • a twistable backrest having a coupling protrusion through which the coupling receiving groove is fastened.
  • the backrest provides a chair having a twistable backrest formed with a guide groove to which the elastic member is fixed and accommodates the locking protrusions on the left and right sides of the rear surface.
  • the elastic member includes a fixing hole formed at both ends and a fastening hole formed on the side of the coupling receiving groove, and the elastic member is fixed to the guide groove through the fixing hole and fastened to the coupling protrusion through the fastening hole. It provides a chair with a twistable backrest.
  • the elastic member is inserted into the coupling receiving groove to provide a chair having a twistable backrest including a fixing member for strongly gripping the coupling protrusion, and a support hole inserted into the fixing hole to be strongly fastened to the guide groove do.
  • a chair provided with a twistable backrest is provided with a plurality of elastic holes formed around the fixing hole.
  • the elastic member provides a chair having a twistable back made of an elastic material.
  • the present invention has an effect of effectively supporting the user's back because the backrest provided in the chair can be tilted in the front-rear direction as well as in the left-right direction.
  • the present invention provides a comfortable seating feel to the user by distributing the user's weight over a wide range by having a high degree of freedom movement of the backrest in the chair, and the effect of preventing the chair from failure by reducing the load applied to the chair. have.
  • a comfortable posture can be maintained, thereby preventing the occurrence of pain such as low back pain that may occur in the lower back.
  • the left and right armrests are individually tilted, but the backrest is twisted by inserting an elastic member between the backrest and the armrest. It can have an effect.
  • FIG. 1 is a perspective view of a chair having a twistable back according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of a chair with a twistable back shown in FIG. 1.
  • FIG. 3 is a perspective view as viewed from the front of the coupling portion of the backrest and armrest in FIG.
  • FIG. 4 is a perspective view as viewed from the back of the coupling portion of the backrest and armrest in FIG.
  • FIG. 5 is a perspective view of another embodiment of the elastic member shown in FIG. 2.
  • Figure 6 is a state diagram showing that a chair with a twistable backrest is twisted.
  • FIG. 7 is a use state diagram showing that a chair with a twistable backrest is tilted.
  • the place where the user's back touches from the back is referred to as the front, and the opposite is referred to as the back.
  • FIG. 1 is a perspective view of a chair having a twistable back according to an embodiment of the present invention.
  • 2 is an exploded perspective view of a chair with a twistable back shown in FIG. 1.
  • 3 is a perspective view as viewed from the front of the coupling portion of the backrest and armrest in FIG. 4 is a perspective view as viewed from the back of the coupling portion of the backrest and armrest in FIG.
  • a chair having a twistable back 40 includes a leg 10, a seat member 20, an armrest 30, a back 40, and It includes an elastic member 50.
  • the leg portion 10 includes a support member 11 and a leg 13, and the leg 13 is attached to the lower portion of the support member 11.
  • a moving member such as a wheel 17 is further installed on the leg 13 so that the chair can be easily moved.
  • a seat member 20 is installed above the support member 11 to support the user's buttocks.
  • the leg portion 10 is designed to withstand the user's load.
  • Armrests 30 are installed at both ends of the support member 11.
  • the armrest 30 is installed at the left and right ends of the support member 11, respectively.
  • the armrest 30 is installed on the support member 11 so that it can be tilted in an oblique direction with respect to the vertical direction in the standing state.
  • a torsion bar (not shown) is configured in the support member 11 to enable tilting.
  • the support member 11 further includes a tilting member 15 so as to transmit the twist of the torsion bar to the armrest 30.
  • the armrest 30 has one end installed on the support member 11, and the other end has an armrest 31 having a certain width to support the user's arm. In the middle, it has a coupling protrusion 33 so that the elastic member 50 can be fastened.
  • a receiving groove 35 into which the tilting member 15 can be inserted is further configured.
  • a groove (not shown) is formed in the tilting member 15 and a protrusion (not shown) is formed in the receiving groove 35.
  • the groove and the protrusion may be coupled in a force-fitting manner.
  • the armrest 30 has a shape bent in the direction in which the backrest 40 is installed at one end where the support member 11 is installed. One end and the other end of the armrest 30 are connected to have a'C' shape.
  • the coupling protrusion 33 is formed in the middle of a'C' shape so that the backrest 40 can be installed vertically. When the backrest 40 is not tilted, it may maintain an erect state.
  • Guide grooves 41 to which the elastic members 50 are fixed are formed on the left and right rear surfaces of the backrest 40.
  • the guide groove 41 further includes a groove into which the bolt can be fastened.
  • the guide groove 41 is formed in a position symmetrical to each other at the left and right ends.
  • the backrest 40 is provided with a guide groove 41 to receive the locking projections 53 on the left and right sides of the rear surface and to which the elastic member 50 is fixed.
  • the backrest 40 and the armrest 30 are coupled via an elastic member 50.
  • the elastic member 50 is formed on one side of the coupling receiving groove 51 to which the coupling protrusion 33 is fastened. On the other side, a locking protrusion 53 accommodated in the guide groove 41 is formed.
  • a coupling receiving groove is formed on a surface coupled to the armrest 30, and a locking protrusion 53 is formed on a surface coupled to the backrest 40.
  • the backrest 40 is coupled to the armrest 30 by an elastic member 50 so as to be integrally moved with the armrest 30.
  • the elastic member 50 is made of an elastic material.
  • Elastic materials are materials that can shrink and return to their original state when pressure is applied while maintaining their shape, such as plastic.
  • an elastomer-based resin can be used as the elastic material.
  • the elastomer-based resin is effective in imparting elasticity to the elastic member 50. However, it is not limited thereto.
  • the elastic member 50 can be retracted, so that the backrest 40 is tilted and at the same time, it is also in the left or right direction in which the user leans. Can be twisted.
  • the elastic member 50 includes fixing holes 55 formed at both ends and fastening holes 57 formed on the side surfaces of the coupling receiving grooves 51.
  • the elastic member 50 is fixed to the guide groove 41 through the fixing hole 55 and fastened to the coupling protrusion 33 through the fastening hole 57.
  • FIG. 5 is a perspective view of another embodiment of the elastic member shown in FIG. 2.
  • the elastic member 50 is inserted into the coupling receiving groove 51 and inserted into the fixing member 52 and the fixing hole 55 for strongly gripping the coupling protrusion 33, and the guide groove 41 ) It includes a support hole 54 for being strongly fastened to. Several elastic holes 59 are formed around the fixing hole 55.
  • the backrest 40 When the elastic member 50 is manufactured in a single configuration having a good elastic effect, the backrest 40 may be twisted to facilitate movement. However, when the elastic member 50 is fastened to and fixed to the coupling protrusion 33 and the guide groove 41, there may be difficulties in strong fastening. In the elastic member 50, a separate member was added to a portion where the mating protrusion 33 and the guide groove 41, which are mating parts, and directly contacted to be fastened, to secure rigidity.
  • the fixing member 52 and the support hole 54 use a separate resin having better rigidity than the elastic member 50.
  • the fixing member 52 and the support hole 54 may be configured by insert injection into the elastic member 50.
  • the fixing member 52 further includes a hole 56 corresponding to the fastening hole 57. It is fastened to the coupling protrusion 33 with a bolt or the like through the fastening hole 57 and the hole 56.
  • the elastic hole 59 in the fixing hole 55 in which the elastic member 50 is fastened to the guide groove 41 can impart effective elasticity to the elastic member 50 and to the fixing hole 55 It can disperse the stress that can be concentrated. Forming the elastic hole 59 in a perforated manner around the fixing hole 55, which is a portion to be assembled with a fastening member such as a bolt, can exert an effect that the elastic member 50 can be easily compressed even at the coupling portion.
  • a seat member 20 is attached to an upper portion of the support member 11 of the leg portion 10. Since the support member 11 may be configured in a rod shape, a support for supporting the seat member 20 may be further installed in order to withstand the load applied to the seat member 20.
  • Armrests 30 are installed at both ends of the left and right sides of the support member 11, respectively. Since the armrest 30 must be tilted, it can be coupled by the tilting member 15.
  • the tilting member 15 transmits the torsion configured on the support member 11 to the armrest 30.
  • a groove is formed in the tilting member 15 to be coupled with a protrusion formed in the receiving groove 35 of the armrest 30.
  • the backrest 40 has a guide groove 41 at the rear, and the locking protrusion 53 of the elastic member 50 is coupled to the guide groove 41.
  • the elastic member 50 may be fastened to the backrest 40 with a fixing member such as a screw.
  • the coupling receiving groove 51 of the elastic member 50 is coupled to the coupling protrusion 33 of the armrest 30.
  • the coupling protrusion 33 and the coupling receiving groove 51 may also be fastened and fixed with a fixing member such as a screw.
  • the elastic member 50 is fastened to the guide groove 41 of the backrest 40, and the elastic member 50 is fastened to the coupling protrusion 33 of the armrest 30.
  • Figure 6 is a state diagram showing that a chair with a twistable backrest is twisted.
  • 7 is a use state diagram showing that a chair with a twistable backrest is tilted.
  • the backrest 40 is tilted backward when the user leans on it.
  • the tilting is inclined in an oblique direction with respect to the vertical direction while the backrest 40 is erected. Since the backrest 40 is coupled to the armrest 30, the armrest 30 and the backrest 40 are tilted together.
  • the user can lean left or right as well as the tilt direction. Due to the elasticity of the elastic member 50, the elastic member 50 may contract, and the backrest 40 may have an inclination in the left or right direction.
  • the backrest 40 may be tilted according to the user's leaning direction and may be twisted left or right. That is, the backrest 40 can be twisted while inclined.
  • 6(a) shows a state in which the backrest 40 is erected and no force is applied to the backrest 40.
  • 6B shows a state in which the backrest 40 is twisted and inclined as a force is applied to the backrest 40 in the P direction.
  • One armrest 30 can be twisted by the elastic member 50 while only the other armrest 30 is not moving.
  • the seat member 20 When the user sits on the chair according to the present invention, the seat member 20 may be tilted together with the backrest 40 and the armrest 30 in a fixed state. Each armrest 30 can move independently. Since the backrest 40 is coupled to the armrest 30 capable of independent movement, the backrest 40 may be tilted to the left or right.
  • the backrest 40 Since the backrest 40 is given a large degree of freedom for movement, the backrest 40 can flexibly support the waist and back according to the user's posture. Therefore, the user can sit for a long time so that there is no strain on the back or back.

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  • Chairs Characterized By Structure (AREA)

Abstract

La présente invention concerne une chaise dotée d'un dossier qui peut supporter de manière flexible un utilisateur en fonction de sa posture assise. L'invention concerne une chaise dotée d'un dossier pouvant être tordu, la chaise comprenant : une partie de jambe constituée d'un élément de support et des pieds fixés à la partie inférieure de l'élément de support ; un élément de siège disposé sur la partie supérieure de l'élément de support pour supporter les hanches de l'utilisateur ; des accoudoirs prévus pour être inclinables sur les deux extrémités de l'élément de support ; et un dossier accouplé aux accoudoirs de façon à pouvoir être déplacé en un seul bloc avec les accoudoirs, le dossier et les accoudoirs étant accouplés l'un à l'autre par l'intermédiaire d'éléments élastiques.
PCT/KR2019/013486 2019-02-21 2019-10-15 Chaise dotée d'un dossier pouvant subir une torsion Ceased WO2020171336A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0020416 2019-02-21
KR1020190020416A KR102098953B1 (ko) 2019-02-21 2019-02-21 트위스트 가능한 등받이를 구비한 의자

Publications (1)

Publication Number Publication Date
WO2020171336A1 true WO2020171336A1 (fr) 2020-08-27

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Application Number Title Priority Date Filing Date
PCT/KR2019/013486 Ceased WO2020171336A1 (fr) 2019-02-21 2019-10-15 Chaise dotée d'un dossier pouvant subir une torsion

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KR (1) KR102098953B1 (fr)
WO (1) WO2020171336A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023101851A (ja) * 2022-01-11 2023-07-24 株式会社内田洋行 椅子

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102318357B1 (ko) 2021-06-24 2021-11-01 (주)광일체어 등받이 틸팅 단계별 조절구조를 갖는 프레임 의자

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090034352A (ko) * 2006-06-29 2009-04-07 로데 운트 그라흘 게엠베하 스툴 또는 의자용 등받이, 및 이런 등받이를 구비한 스툴 또는 의자
CN101410037A (zh) * 2006-03-24 2009-04-15 休思乐公司 人体工学椅
JP2011000451A (ja) * 2010-08-16 2011-01-06 Itoki Corp 椅子の背もたれの支持機構
KR101412406B1 (ko) * 2012-12-27 2014-06-27 김우학 프레임 타입형 의자
KR101623726B1 (ko) * 2015-06-05 2016-05-24 주식회사 다원체어스 좌판 접힘 의자

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101410037A (zh) * 2006-03-24 2009-04-15 休思乐公司 人体工学椅
KR20090034352A (ko) * 2006-06-29 2009-04-07 로데 운트 그라흘 게엠베하 스툴 또는 의자용 등받이, 및 이런 등받이를 구비한 스툴 또는 의자
JP2011000451A (ja) * 2010-08-16 2011-01-06 Itoki Corp 椅子の背もたれの支持機構
KR101412406B1 (ko) * 2012-12-27 2014-06-27 김우학 프레임 타입형 의자
KR101623726B1 (ko) * 2015-06-05 2016-05-24 주식회사 다원체어스 좌판 접힘 의자

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023101851A (ja) * 2022-01-11 2023-07-24 株式会社内田洋行 椅子
JP7755254B2 (ja) 2022-01-11 2025-10-16 株式会社内田洋行 椅子

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