EP3616567A1 - Stuhl mit einer krümmungsanpassungsmodul für lendenstützendes teil - Google Patents

Stuhl mit einer krümmungsanpassungsmodul für lendenstützendes teil Download PDF

Info

Publication number
EP3616567A1
EP3616567A1 EP19183905.9A EP19183905A EP3616567A1 EP 3616567 A1 EP3616567 A1 EP 3616567A1 EP 19183905 A EP19183905 A EP 19183905A EP 3616567 A1 EP3616567 A1 EP 3616567A1
Authority
EP
European Patent Office
Prior art keywords
support part
flection
chair
groove
coupled
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Withdrawn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
EP19183905.9A
Other languages
English (en)
French (fr)
Inventor
Gyu Youn Lee
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 EP3616567A1 publication Critical patent/EP3616567A1/de
Withdrawn legal-status Critical Current

Links

Images

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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

Definitions

  • the present invention relates to a chair having a flection adjustment module for a lumbar support part, and more particularly, to a chair having a flection adjustment module for a lumbar support part, in which a backrest part and a support part are provided for supporting a back portion of a user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part is provided, so that flection suitable for the user is formed, and thus a waist portion of the user is supported more comfortably.
  • a chair is a mechanism for allowing a user to sit and relax, and various components such as a backrest, an armrest, and a headrest are additionally provided to provide various functions. Meanwhile, in modern society, a considerable amount of work is performed through a computer while sitting at a desk. Accordingly, a variety of chairs are being developed to provide more comfort to the user.
  • a chair in which a lumbar support part for supporting a waist portion is additionally provided on a backrest is being manufactured, so that the chair may support the waist portion properly while a user is sitting on the chair so as to prevent the waist portion from being strained even when the user is seated on the chair for a long time, and a simple acupressure treatment effect is provided.
  • Korean Patent No. 10-0427193 Korean Patent No. 10-0708303 , and Korean Patent No. 10-1608737 disclose a conventional technique for providing a chair for supporting a waist portion.
  • Korean Patent No. 10-0427193 discloses a lumbar support chair, which has a seat support on which hips are seated and is provided for allowing a back to be leaned against the chair, the lumbar support chair including: a lumbar support provided to be protrudable to a front side of a backrest; a rotation knob rotatably provided on a rear surface of the backrest; and a rotation bar for allowing the lumbar support to protrude to the front side of the backrest or to be withdrawn from the front side of the backrest according to a rotation of the rotation knob.
  • Korean Patent No. 10-0708303 discloses a chair having a variable backrest, the chair including: a backrest in which a seat member having a predetermined elasticity is connected to a frame; and a waist support including a support member having an arc shape to maintain predetermined strength and having both ends connected to the frame with a bolt while forming a predetermined space between the support member and the seat member, including a lifting/lowering device connected to the support member with a distance adjustment device interposed therebetween to lift/lower the support member, and having a contact surface corresponding to a back shape of a user.
  • Korean Patent No. 10-1608737 relates to a lumbar support device and a backrest unit of a chair including the same, in which the lumbar support device includes: a support frame having a communication hole; a lumbar support pad; and a back-and-forth movement adjustment unit for adjusting an amount of a back-and-forth movement of the lumbar support pad to a lumbar portion with respect to the support frame through the communication hole.
  • a position of the lumbar support pad of the chair for supporting a waist portion of a seated person may be freely set in a vertical direction and a back-and-forth direction according to a body shape, and the lumbar support pad presses a backrest which supports the waist portion, so that it is possible to prevent an inconvenience from being caused by the lumbar support pad by making direct contact with the waist portion.
  • a lumbar support part for supporting a waist portion or a lumbar portion is separately provided on the backrest of the chair, thereby providing convenience to the user.
  • Korean Patent No. 10-0427193 Korean Patent No. 10-0708303 , and Korean Patent No. 10-1608737
  • assembly is complicated, and a number of components constituting a device is increased, and since a number of processes is increased, a manufacturing cost of the chair is increased.
  • an overall design of the chair may have no sense of unity due to the lumbar support part, so that aesthetic beauty is reduced, and thus consumers may not tend to choose the chair.
  • the present invention proposes a chair having a flection adjustment module for a lumbar support part, capable of adjusting flexion of a backrest of the chair by a simple scheme without separately providing the lumbar support part.
  • an object of the present invention is to provide a chair having a flection adjustment module for a lumbar support part, in which a backrest part and a support part are provided for supporting a back portion of a user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part is provided, so that flection suitable for the user may be formed, and thus a waist portion of the user may be supported more comfortably.
  • an object of the present invention is to provide a chair having a flection adjustment module for a lumbar support part, in which the flection of the lumbar support part is adjustable in a stepwise manner by simply pulling up the flection adjustment module described above, so that a supporting force customized for each user may be provided through a simple scheme.
  • a chair having a flection adjustment module for a lumbar support part, the chair including: a seat part; a support part coupled to the seat part; a backrest part coupled to an upper end of the support part so as to be disposed on an upper portion of the seat part, extending downward from the upper end of the support part, and including a lumbar support part bent corresponding to a waist portion of a user; and a flection adjustment module movably coupled between the backrest part and the support part to adjust flection of the lumbar support part.
  • the flection adjustment module is fixedly coupled to the backrest part while being coupled to the support part so as to be vertically movable.
  • the flection adjustment module includes: a connection member coupled to the backrest part and having a length extending toward the support part; a latching member mounted in the connection member to perform a pendular movement, and having a pin protruding toward the support part; an elastic member mounted on both sides of the latching member to allow the pendular movement to be elastically performed; and a step adjustment member coupled to the support part, and formed on a rear surface thereof with a step adjustment groove including one or more latching grooves in which the pin is inserted and seated.
  • the step adjustment member further includes a pin guide groove for guiding a movement of the pin along an outer periphery of the step adjustment groove.
  • the latching grooves are obliquely formed in a longitudinal direction of the step adjustment member.
  • an insertion part of the latching groove into which the pin is inserted is formed at a position higher than a position of a seating part of the latching groove at which the pin is stopped.
  • an upper surface of each of the latching grooves has a streamline shape.
  • the latching grooves are formed on one side of the step adjustment groove in parallel to each other.
  • the flection adjustment module further includes a cover member coupled to the connection member to cover the one surface of the connection member, and having a fluctuation groove corresponding to a fluctuation radius of the pin.
  • the step adjustment member further includes a connection member guide groove formed on both sides of the step adjustment groove to guide a movement of the connection member, and the connection member has a protrusion part having a shape corresponding to the connection member guide groove.
  • the backrest part and the support part are provided for supporting the back portion of the user, and the flection adjustment module movably coupled between the backrest part and the support part to adjust the flection of the lumbar support part is provided, so that the flection suitable for the user can be formed, and thus the waist portion of the user can be supported more comfortably.
  • the flection of the lumbar support part is adjustable in a stepwise manner by simply pulling up the flection adjustment module described above, so that the supporting force customized for each user may be provided through a simple scheme.
  • FIG. 1 is a view schematically showing a chair having a flection adjustment module for a lumbar support part according to an embodiment of the present invention
  • FIG. 2 is a view schematically showing a configuration of the flection adjustment module according to an embodiment of the present invention
  • FIG. 3 is a view schematically showing an internal configuration of the flection adjustment module according to an embodiment of the present invention
  • FIG. 4 is a view schematically showing a cover member of the flection adjustment module according to an embodiment of the present invention
  • FIG. 5 is a view schematically showing an operation state of the flection adjustment module according to an embodiment of the present invention
  • FIG. 6 is a view schematically showing a state in which flection of the lumbar support part is adjusted according to an embodiment of the present invention.
  • a chair having a flection adjustment module for a lumbar support part basically includes a seat part 100, a support part 200, a backrest part 300, and a flexion adjustment module 400.
  • the seat part 100 is configured to have an appropriate area for allowing a user to be seated, and may include: a leg part 110 provided at a lower portion of the seat part 100 with an adjustable height; an assembly 120 including an adjustment lever 125 that enables at least one of height adjustment of the leg part 110 and angle adjustment of the support part 200; and an armrest part 130 mounted on both sides of the seat part 100 to support an arm of the user.
  • the support part 200 is configured to support a back portion of the user while being coupled with the backrest part 300, in which a lower end of the support part 200 is coupled with the seat part 100 to provide a supporting force.
  • the support part 200 may extend upward from one side of the seat part 100.
  • the support part 200 may include an elastic material to provide a suitable elastic force while supporting against a leaning force of the back portion of the user, and as shown in FIG. 6 , in order to increase efficiency, the support part 200 may substantially have an "S" shape in which an upper bent portion is spread in an upward direction when viewed from a right side.
  • the support part 200 may further include at least one of a headrest part 250 mounted on an upper portion of the support part 200 to support a head portion of the user, and a hanger part 260 mounted on the upper portion of the support part 200 while being disposed on a rear surface of the headrest part 250 to hang clothes of the user.
  • the backrest part 300 is coupled to an upper end of the support part 200 so as to be disposed on an upper portion of the seat part 100, extends downward from the upper end of the support part 200, and includes a lumbar support part 350 bent corresponding to a waist portion of the user.
  • the backrest part 300 may be formed of an elastic material so that the lumbar support part 350 may further protrude toward the waist portion of the user by an operation of the flection adjustment module 400.
  • the backrest part 300 may be configured as a frame formed therein with an opening and a mesh net (not shown) provided in the opening of the frame.
  • a mesh net not shown
  • the flection adjustment module 400 is movably coupled between the backrest part 300 and the support part 200 to adjust flection of the lumbar support part 350.
  • the flection adjustment module 400 may be fixedly coupled to the backrest part 300 while being coupled to the support part 200 so as to be vertically movable. Therefore, when the user pulls up the flection adjustment module 400 in an upward direction of the support part 200 while gripping the flection adjustment module 400, since the backrest part 300 is coupled to the flection adjustment module 400, the lumbar support part 350 is further bent. Accordingly, the lumbar support part 350 may protrude toward the waist portion of the user, so that the lumbar support part 350 may further make close contact with the waist portion of the user.
  • the flection adjustment module 400 may include: a connection member 410 coupled to the backrest part 300 and having a length extending toward the support part 200; a latching member 420 mounted in the connection member 410 to perform a pendular movement, and having a pin 421 protruding toward the support part 200; an elastic member 430 mounted on both sides of the latching member 420 to allow the pendular movement to be elastically performed; and a step adjustment member 440 coupled to the support part 200, and formed on a rear surface thereof with a step adjustment groove 441 including one or more latching grooves 442 in which the pin 421 is inserted and seated.
  • components for allowing the connection member 410 to be coupled to the backrest part 300 and allowing the step adjustment member 440 to be coupled to the support part 200 may be additionally provided.
  • connection member 410 may have a shape which allows components such as the latching member 420 and the elastic member 430 to be mounted on one surface of the connection member 410.
  • a protrusion groove 411 may be formed in an upper center of the one surface of the connection member 410
  • an elastic member coupling groove 412 may be obliquely formed on both lower sides of the connection member 410 to correspond to right and left directions of the pendular movement of the latching member 420.
  • a protrusion part 413 protruding toward the support part 200 more than a center portion of the connection member 410 to form multiple steps may be provided on both sides of the connection member 410.
  • the protrusion part 413 may make close contact with a connection member guide groove 443 recessed on both sides of the step adjustment member 440 to form multiple steps, as shown in FIG. 3(b) , so that the flection adjustment module 400 may be prevented from being separated to right and left when the flection adjustment module 400 is moved vertically.
  • a cover member 450 having a fluctuation groove 451 corresponding to a fluctuation radius of the pin 421 may be coupled to the one surface of the connection member 410. Therefore, components such as the latching member 420 and the elastic member 430 mounted inside the connection member 410 may be prevented from being separated.
  • the latching member 420 has an upper portion mounted in the protrusion groove 411 and extends downward from the protrusion groove 411 to perform the pendular movement in the right and left directions, and the latching member 420 may be formed at right and left ends thereof with an elastic member mounting groove 422 in which the elastic member 430 is mounted.
  • the elastic member 430 may be inserted and mounted between the elastic member coupling groove 412 and the elastic member mounting groove 422 to allow the pendular movement of the latching member 420 in the right and left directions to be elastically performed.
  • the elastic member 430 may be a spring as shown in FIG. 3 , but is not limited thereto, and other components that may provide elasticity may be used.
  • the latching grooves 442 formed in the step adjustment groove 441 of the step adjustment member 440 may be obliquely formed in a longitudinal direction of the step adjustment member 440, and an insertion part 442a of a latching groove 442 into which the pin 421 is inserted may be formed at a position higher than a position of a seating part 442b of the latching groove 442 at which the pin 421 is stopped.
  • an upper surface of each of the latching grooves 442 may have a streamline shape.
  • the latching grooves 442 are formed on one side of the step adjustment groove 441 in parallel to each other, and the step adjustment member 440 further includes a pin guide groove 444 for guiding a movement of the pin 421 along an outer periphery of the step adjustment groove 441.
  • the pin 421 is inserted into the pin guide groove 444 formed along an outer periphery of the step adjustment groove 441 or the latching groove 442 formed in the step adjustment groove 441 so as to be moved.
  • the flection adjustment module 400 when the pin 421 is located at a lowermost position (A) of the pin guide groove 444, the flection adjustment module 400 is located at a lowermost position, so that the lumbar support part 350 may maintain only basic flection without additional protrusion.
  • the pin 421 when the user grips and pulls up the flection adjustment module 400, the pin 421 is fixedly inserted into a first latching groove (B) by an elastic force of the elastic member 430 after being moved in one fluctuation direction along the streamline shape of the upper surface of the latching groove 442.
  • FIG. 6(b) the lumbar support part 350 gradually protrudes toward the waist portion of the user, so that the lumbar support part 350 may further make close contact with the waist portion of the user.
  • the pin 421 may be located at the lowest position again after passing over (C) an upper surface of the third latching groove and moving along the pin guide groove 444. Accordingly, the lumbar support part 350 may have the basic flection again by the elastic force.
EP19183905.9A 2018-08-31 2019-07-02 Stuhl mit einer krümmungsanpassungsmodul für lendenstützendes teil Withdrawn EP3616567A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020180103219A KR101967201B1 (ko) 2018-08-31 2018-08-31 요추받이부 굴곡조절모듈이 구비된 의자

Publications (1)

Publication Number Publication Date
EP3616567A1 true EP3616567A1 (de) 2020-03-04

Family

ID=66167556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19183905.9A Withdrawn EP3616567A1 (de) 2018-08-31 2019-07-02 Stuhl mit einer krümmungsanpassungsmodul für lendenstützendes teil

Country Status (3)

Country Link
US (1) US20200069064A1 (de)
EP (1) EP3616567A1 (de)
KR (1) KR101967201B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10477973B2 (en) * 2016-11-01 2019-11-19 Ergogenesis Workplace Solutions, Llc Ergonomic chair
WO2019204714A1 (en) * 2018-04-19 2019-10-24 Cramer Llc Chair having pliable backrest and methods for same
KR102382087B1 (ko) * 2020-06-09 2022-04-04 김란순 의자의 탄성력 있는 굴곡조절모듈
KR102324422B1 (ko) 2021-04-05 2021-11-11 주식회사 체어로 틸팅형 등받이가 형성된 의자 프레임
KR102505888B1 (ko) * 2022-08-11 2023-03-06 주식회사 다원체어스 요추지지대가 구비된 등받이 및 그가 적용된 의자
KR102541521B1 (ko) * 2022-12-29 2023-06-13 (주)아트스틸퍼니처 의자 등받이용 요추받침 조정장치

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100427193B1 (ko) 2001-07-31 2004-04-14 주식회사 리바트 요추받이 의자
KR100708303B1 (ko) 2005-05-23 2007-04-17 (주)체어텍 가변 등받이를 갖는 의자
US9247821B1 (en) * 2014-08-11 2016-02-02 Yao-Chuan Wu Modified back rack
KR101608737B1 (ko) 2015-09-30 2016-04-04 (주)코아스 요추지지장치 및 이를 구비하는 의자의 등받이유닛
US20160360892A1 (en) * 2015-06-12 2016-12-15 Gary Neil Adjustable lumbar support for a chair back
KR101730880B1 (ko) * 2016-11-24 2017-04-28 주식회사 다원체어스 허리지지부의 곡률 조절이 가능한 등받이가 구비된 의자
KR101759479B1 (ko) * 2016-11-08 2017-07-20 주식회사 다원체어스 의자용 등받이

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH696482A5 (de) * 2000-03-29 2007-07-13 Stoll Giroflex Ag Vorrichtung für eine Verstellung von einer ersten Komponente eines Stuhls gegenüber einer zweiten Komponente eines Stuhls.
US7014269B2 (en) * 2001-06-15 2006-03-21 Hon Technology Inc. Chair back construction
US20040140701A1 (en) * 2002-10-15 2004-07-22 Burkhard Schmitz Backrest for a seating structure with an adjustable sacral support
US7874619B2 (en) * 2007-01-29 2011-01-25 Allseating Corporation Adjustable lumbar support for a chair back
US7775593B2 (en) * 2008-10-09 2010-08-17 Jung-Hua Hu Adjusting device of a chair backrest
US9596941B1 (en) * 2016-02-02 2017-03-21 Office Master Inc. Chair back with height and lumbar adjustment
CN109549386B (zh) * 2018-04-12 2024-04-12 浙江胜途家具科技有限公司 一种人体工学座椅

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100427193B1 (ko) 2001-07-31 2004-04-14 주식회사 리바트 요추받이 의자
KR100708303B1 (ko) 2005-05-23 2007-04-17 (주)체어텍 가변 등받이를 갖는 의자
US9247821B1 (en) * 2014-08-11 2016-02-02 Yao-Chuan Wu Modified back rack
US20160360892A1 (en) * 2015-06-12 2016-12-15 Gary Neil Adjustable lumbar support for a chair back
KR101608737B1 (ko) 2015-09-30 2016-04-04 (주)코아스 요추지지장치 및 이를 구비하는 의자의 등받이유닛
KR101759479B1 (ko) * 2016-11-08 2017-07-20 주식회사 다원체어스 의자용 등받이
KR101730880B1 (ko) * 2016-11-24 2017-04-28 주식회사 다원체어스 허리지지부의 곡률 조절이 가능한 등받이가 구비된 의자

Also Published As

Publication number Publication date
KR101967201B1 (ko) 2019-04-09
US20200069064A1 (en) 2020-03-05

Similar Documents

Publication Publication Date Title
EP3616567A1 (de) Stuhl mit einer krümmungsanpassungsmodul für lendenstützendes teil
JP3142518B2 (ja) 椅 子
US8764110B2 (en) Resilient leaning position-restoring device for height-adjustable chair back of office chair
KR101679795B1 (ko) 지지 위치와 강도를 통합적으로 조절하는 요추지지 조절장치
KR20140013899A (ko) 의자의 조절장치
EP3545795A1 (de) Vorwärts neigemechanismus für stuhlsitz
JP4875304B2 (ja) 椅子
CN104323615A (zh) 一种反重力家用休闲养生椅
CN202009873U (zh) 办公椅的椅背高度调整装置
KR102382087B1 (ko) 의자의 탄성력 있는 굴곡조절모듈
KR101603998B1 (ko) 요추의 지지위치가 가변되는 의자
KR100708303B1 (ko) 가변 등받이를 갖는 의자
KR101733981B1 (ko) 위치 조절이 가능한 헤드레스트가 구비된 의자
KR101296612B1 (ko) 의자 등받이의 허리받침장치
KR101303263B1 (ko) 허리지지부가 구비된 의자
CN112220261A (zh) 一种防止形成久坐问题的座椅
CN108013633B (zh) 具有机电提升机构的用于家具的软垫元件的可变高度靠背/头枕
CN218635627U (zh) 椅子
CN217185370U (zh) 一种跪坐一体式的办公椅
CN218304108U (zh) 坐垫前端的滑动垫平移结构
KR102078658B1 (ko) 조절식 요추 지지장치를 갖는 의자 등받이
EP3311701A1 (de) Rückenlehne/kopfstütze mit variabler höhe für ein gepolstertes möbelstück mit einem elektromechanischem hebemechanismus
KR102104759B1 (ko) 요추전만 자세를 유지할 수 있는 각도조절식 의자용 좌판
CN219515758U (zh) 座椅腿托和座椅
CN212280604U (zh) 一种舒脊护臀乳胶人体工学座椅

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190702

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LEE, GYU YOUN

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20201215

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20210427