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WO2018036059A1 - 椅子 - Google Patents

椅子 Download PDF

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Publication number
WO2018036059A1
WO2018036059A1 PCT/CN2016/112908 CN2016112908W WO2018036059A1 WO 2018036059 A1 WO2018036059 A1 WO 2018036059A1 CN 2016112908 W CN2016112908 W CN 2016112908W WO 2018036059 A1 WO2018036059 A1 WO 2018036059A1
Authority
WO
WIPO (PCT)
Prior art keywords
backrest
chair according
seat plate
user
seat
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/CN2016/112908
Other languages
English (en)
French (fr)
Inventor
徐进华
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
Application filed by Individual filed Critical Individual
Publication of WO2018036059A1 publication Critical patent/WO2018036059A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Supports 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • 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
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs

Definitions

  • the present invention relates to a chair, and more particularly to a chair for use in a work or learning environment.
  • the user sits between the long squats, and the ass tends to move forward a distance. If the body rests on the backrest of the chair, the user's waist will leave a large gap, and the lumbar spine is in a suspended state. However, the lumbar vertebrae are in a state of being suspended, which is very unfavorable to the health of the lumbar spine of the human body. Because of the long sputum, it is prone to disc herniation or even shedding, which affects human health.
  • the technical problem solved by the present invention is to provide a chair for healthy riding.
  • the technical solution adopted by the present invention is: a chair, comprising a support base, a backrest, a connecting frame and a seat plate for the user to ride, wherein the backrest is supported by the support through the connection a seat, characterized in that: the backrest includes a back contact section for supporting the back, a waist contact section for supporting the waist, and a transition section connecting the back contact section and the waist contact section, wherein the transition section is pre-formed
  • the position is rotatably connected to the connecting frame by a rotating structure; under the action of an external force, the backrest can rotate from the preset state along the rotating structure; after the external force disappears, the backrest returns to the preset state .
  • the seat plate is disposed on the connecting frame, and the seat plate includes a substantially horizontal seat portion for the user to ride and a slope portion inclined downward along the user's riding direction.
  • the seat The points are located in the rear of the user's riding direction, and the sloped portion is located in front of the user's riding direction.
  • the seat plate is disposed on the support base, and the seat plate includes a substantially horizontal seat portion for the user to ride and a slope portion inclined downward along the user's ride direction.
  • the occupant portion is located rearward of the user's riding direction, and the sloping portion is located in front of the user's riding direction.
  • the acute angle formed between the slope portion and the horizontal plane in the technical solution ranges between more than 6° and less than 25°.
  • the acute angle in the technical solution ranges from 7° to 15°.
  • the acute angle in the technical solution is 12° or 13° or 14° or 15°.
  • the occupant portion is a half to two-thirds portion of the seat plate; and the remaining portion is the slope portion.
  • the occupant portion substantially occupies a ratio of half of the seat plate; or the occupant portion substantially occupies a ratio of two-thirds of the seat plate.
  • the support base further has a lifting adjustment mechanism
  • the seat plate and the connecting frame are both disposed on the lifting and adjusting mechanism, and the lifting and adjusting mechanism is used for adjusting the seat plate and The height of the backrest from the ground.
  • the lifting and lowering adjustment mechanism is a lifting mechanism of a pneumatic lifting column or a screw lifting mechanism or an adjusting member fastening lifting rod or a lifting mechanism that cooperates with the porous structure body.
  • the technical solution further includes an armrest, and the armrests are located at two sides of the seat plate.
  • the rotating structure between the backrest and the connecting frame is further provided with a reset mechanism
  • the reset mechanism causes the backrest to remain in the predetermined state without being subjected to an external force.
  • the reset mechanism in the technical solution includes a torsion spring, the torsion spring maintains the backrest at a preset position, and the rotating structure further has a damping structure, wherein the damping structure makes the The backrest is slowly rotated and reset by the reel around the rotating structure.
  • the transition section of the backrest has a width greater than a width of the interference section in the connecting frame, and the interference between the transition section and the interference section makes the backrest unaffected The external force is kept at a preset state.
  • the axis of the rotating structure is away from the seat plate by a height of 320 MM - 3 80 MM.
  • the backrest and the seat plate are provided with a cushion.
  • the back surface of the backrest that is in contact with the back and the waist of the human body is shaped like a normal physiological curve of the adult body.
  • the center of gravity of the backrest is located below the rotating structure, and the gravity of the backrest causes the backrest to remain in the preset state without being affected by an external force.
  • the support base is provided with a roller adapted to slide on the ground.
  • connection transition section between the back contact section and the waist contact section is rotatably connected to the connecting frame by a rotating structure
  • the backrest can be wound under the action of an external force
  • the rotating structure rotates from the preset state, so that the user's back rests on the backrest, and the backrest rotates around the axis of the rotating structure, and the waist contact section can be supported to the waist of the user. , to prevent the lumbar force.
  • FIG. 1 is a perspective view showing the structure of a preferred embodiment of a chair
  • FIG. 2 is a schematic view showing the shape of the backrest of FIG. 1;
  • FIG. 3 is a schematic view showing the shape of the seat plate of FIG. 1;
  • Figure 4 is a front elevational view of the chair of Figure 1;
  • Figure 5 is a right side view of the chair of Figure 1;
  • Figure 6 is a front elevational view of the rotating structure
  • Figure 7 is a cross-sectional view taken along the line A-A of the rotating structure
  • FIG. 8 is an exploded view of FIG. 7.
  • FIG. 9 is a schematic view of the backrest rotated by an angle under an external force.
  • the preferred embodiment discloses a chair 100 that includes a support base 110, a backrest 120, a connector bracket 130, and a seat pan 140 for the user to ride.
  • the connecting frame 130 is disposed on the support base 110
  • the backrest 120 and the seat plate 140 are disposed on the support base 110 through the connecting bracket 130.
  • the backrest 120 includes a back contact section 121 for supporting the back, a waist contact section 122 for supporting the waist, and a transition section 123 connecting the back contact section 121 and the waist contact section 122, in the transition section 123.
  • the preset position is rotatably coupled to the connecting frame 130 by the rotating structure 131. As shown in Fig.
  • the preset state of the backrest 120 refers to a state in which the human body is in a comfortable position on the backrest 120 after being seated normally.
  • the backrest 120 is at an angle of 3° or 6° with the vertical plane; wherein the more comfortable position state preferably forms an angle between the backrest 120 and the vertical plane in the range of 3° - 10°.
  • the seat plate 140 may also be disposed directly on the support base 110 without the connection bracket 130.
  • the seat surface for the person to ride is basically parallel to the horizontal plane, and the chair with the seat surface parallel to the horizontal plane is easy to press the artery with the thigh and the chair surface close to the body, causing blood. Not circulated, sedentary affects the health of the user. Therefore, as shown in FIG. 3, the seat plate 140 includes a substantially horizontal seat portion 141 for the user to ride and a slope portion 142 which is inclined downward in the direction of the user's ride, the seat portion 141 being located rearward of the user's riding direction, the slope portion 142 is located in front of the user's direction of travel.
  • the acute angle formed between the slope portion 142 and the horizontal plane ranges between greater than 6° and less than 25°.
  • the seat portion 141 and the slope portion 142 are actually a rough outline of the shape.
  • the seat portion 141 can be set to a slightly concave plane for contacting the user's buttocks.
  • the mode is also within the range of the basic level described in the present invention;
  • the slope portion 142 is also formed as a small curved surface, and the acute angle formed between the slope portion 14 2 and the horizontal plane is the slope portion 142 high point and bottom.
  • the user's riding direction refers to the direction in which the user sits on the chair 100
  • the front and rear refers to the direction in which the user rides, and the user faces the front and the back is the rear.
  • the sloped portion 142 that slopes downward may allow the seat plate 140 to be compared to the entire seat surface that is substantially parallel to the horizontal plane.
  • T3 ⁇ 006i0 £P3 M"Asj3 ⁇ 4)a8%66%6a% ⁇ 8%a8%sa%e8%a8%sa%i76%0e%9a%
  • the lifting mechanism that cooperates with the porous structure is: The pin is matched with the structure with multi-position holes, by selecting the pin and the position hole The connection relationship to control the rise or fall.
  • the lifting mechanism of the adjusting member fastening the lifting rod is composed of a sleeve, a connecting member that is movably inserted into the sleeve for lifting, and a fastener.
  • the sleeve is provided with a notch, and the fastener is used for locking the notch to realize the sleeve gripping the connecting member and preventing the connecting member from moving.
  • an armrest 150 is further included.
  • the armrest 150 is disposed on the connecting frame 130, and the armrest 150 is located at two sides of the seat plate 140.
  • the armrest 150, the seat plate 140 and the backrest 120 are all disposed on the connecting frame 130, and the lifting and lowering mechanism 111 can integrally adjust the height of the connecting frame 130 from the ground.
  • the support base 110 is provided with a roller 113 adapted to slide on the ground.
  • the rotating structure 131 between the backrest 120 and the connecting frame 130 is further provided with a reset mechanism 1 311.
  • the reset mechanism 1311 keeps the backrest 120 in a preset state without being subjected to an external force.
  • the width of at least the transition section 123 in the backrest 120 is greater than the width of the interference section 132 in the bracket 131, and the interference limit of the transition section 123 and the interference section 132 causes the backrest 120 to remain in a preset state without being subjected to an external force.
  • the rotating structure 131 adopts an articulated embodiment.
  • the rotating structure 1 31 includes one end of the connecting bracket 130 with a through hole 133, a fixing member 1313 connected to the backrest 120, and a rotating shaft 1312.
  • the rotating shaft 1312 is adapted to be inserted into the through hole 133 and then connected in the fixing member 1313, and the rotating shaft 1312 is adapted to It is free to rotate on the fixing member 1313.
  • the reset mechanism 1311 is a torsion spring, and the torsion spring is sleeved on the rotating shaft 1312. One end of the torsion spring is fixed on the connecting frame 130, and the other end is fixed on the fixing member 1313.
  • the torsion spring holds the backrest 120 in a preset position.
  • a damping structure 1314 is also provided in the rotating structure 131, and the damping structure 1314 causes the backrest 120 to be slowly rotated and reset in the reset winding structure 131.
  • the damping structure 1314 is arranged such that after the backrest 120 is rotated to a certain angle, the contact of the user's back with the backrest 120 can be in a relatively comfortable state due to the damping effect of the damping structure 1314.
  • the height of the axis of the rotating structure 131 from the seat plate 140 is 320 MM to 380 MM.
  • the height of the axis of the rotating structure 131 from the seat plate 140 is 150 mm; that is, from the waist contact portion 122 upward, the backrest 120 and the connection
  • the position between the frames 130 connected by the rotating structure 131 is approximately three-fifths of the position of the backrest 120.
  • the surface of the backrest 120 that is in contact with the back and waist of the human body is shaped like a normal physiological curve of the adult body.
  • the center of gravity of the backrest 120 is located below the rotating structure 131, and the weight of the backrest 120 causes the backrest 120 to remain in a preset state without being subjected to external force.
  • a cushion that is comfortable for a person can be placed on the backrest 120 and the seat panel 140.
  • connection transition section 123 between the back contact section 121 and the waist contact section 122 is rotatably connected to the connecting frame 130 through the rotating structure 131, the backrest 120 can be wound around the rotating structure 131 by an external force.
  • the needle rotates from the preset state, so that the user's back rests on the backrest 120.
  • the waist contact section 122 can also be supported to the user's waist to prevent the lumbar spine from being stressed.
  • the lever principle is applied. Therefore, when the rotating mechanism 131 is provided with the reset mechanism 1311 ⁇ , the human body only needs a small force to rotate the backrest 120, so that the human body makes The rotation of the backrest 120 becomes very natural and does not feel a large reaction force.
  • the pedestal portion 141 can also be a ratio that is substantially two-thirds of the seat plate 140; the slope portion 142 occupies a substantially one-third of the seat plate 140.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

一种椅子（100），包括支撑座（110）、靠背（120）、连接架（130）和供用户乘坐的座板（140），靠背（120）通过连接架（130）设于支撑座（110）上，其特征在于：靠背（120）包括用于支撑背部的背部接触段（121）、用于支撑腰部的腰部接触段（122）、以及连接背部接触段（121）与腰部接触段（122）的过渡段（123），过渡段（123）中预设位置通过旋转结构（131）可旋转连接在连接架（130）上；在外力作用下，靠背（120）可绕旋转结构（131）从预设状态顺时针旋转；外力消失后，靠背（120）回到预设状态。

Description

椅子 技术领域
[0001] 本发明涉及一种椅子， 特别涉及一种在工作或学习环境下使用的椅子。
背景技术
[0002] 椅子是人们日常办公和生活中必不可少的家具， 按材质分， 实木椅、 铁艺椅、 塑料椅、 布艺椅、 皮艺椅等。 按使用场合分， 办公椅、 餐椅、 吧椅、 休闲椅等 技术问题
[0003] 现有用于工作的椅子和用于学习的椅子， 其靠背基本上都是固定不可活动的。
如此， 用户在长吋间坐靠吋， 屁股往往会往前移一段距离。 此吋如果身体再靠 在椅子的靠背上吋， 用户的腰部就会留出一个很大的空隙,腰椎处于悬空的状态 。 而腰椎处于悬空的状态吋， 对人体的腰椎健康是很不利的， 长吋间如此， 易 发生椎间盘突出， 甚至脱落， 影响人体健康。
问题的解决方案
技术解决方案
[0004] 根据现有技术中所存在的不足， 本发明所解决的技术问题是提供一种健康乘坐 的椅子。
[0005] 为解决上述技术问题， 本发明所采用的技术方案是： 一种椅子， 包括支撑座、 靠背、 连接架和供用户乘坐的座板， 所述靠背通过所述连接架设于所述支撑座 上， 其特征在于： 所述靠背包括用于支撑背部的背部接触段、 用于支撑腰部的 腰部接触段、 以及连接所述背部接触段与腰部接触段的过渡段， 所述过渡段中 预设位置通过旋转结构可旋转连接在所述连接架上； 在外力作用下， 所述靠背 可绕所述旋转结构从预设状态顺吋针旋转； 外力消失后， 所述靠背回到预设状 态。
[0006] 进一步地， 本技术方案中所述座板设于所述连接架上， 所述座板包括基本水平 的供用户乘坐的乘座部分和沿用户乘坐方向向下倾斜的坡面部分， 所述乘座部 分位于用户乘坐方向的后方， 所述坡面部分位于用户乘坐方向的前方。
[0007] 进一步地， 本技术方案中所述座板设于所述支撑座上， 所述座板包括基本水平 的供用户乘坐的乘座部分和沿用户乘坐方向向下倾斜的坡面部分， 所述乘座部 分位于用户乘坐方向的后方， 所述坡面部分位于用户乘坐方向的前方。
[0008] 优选地， 本技术方案中所述坡面部分与水平面之间形成的锐角范围在大于 6°并 小于 25°之间。
[0009] 优选地， 本技术方案中所述锐角范围在 7°— 15°。
[0010] 优选地， 本技术方案中所述锐角为 12°或 13°或 14°或 15°。
[0011] 进一步地， 本技术方案中所述乘座部分为所述座板一半至三分之二的部分； 剩 下的则为所述坡面部分。
[0012] 进一步地， 本技术方案中所述乘座部分基本占所述座板一半的比例； 或者所述 乘座部分基本占所述座板三分之二的比例。
[0013] 进一步地， 本技术方案中所述支撑座还具有升降调节机构， 所述座板和连接架 都设于所述升降调节机构上， 所述升降调节机构用于调节所述座板和靠背的离 地高度。
[0014] 进一步地， 本技术方案中所述升降调节机构为气压升降柱或螺杆升降机构或调 节件紧固升降杆的升降机构或插销与多孔位结构体相配合的升降机构。
[0015] 进一步地， 本技术方案还包括扶手， 所述扶手位于所述座板的两侧。
[0016] 进一步地， 本技术方案中所述靠背与连接架之间的旋转结构上还设有复位机构
， 所述复位机构使所述靠背在不受外力吋保持在所述预设状态。
[0017] 进一步地， 本技术方案中所述复位机构包括扭簧， 所述扭簧使所述靠背保持在 预设位置， 所述旋转结构内还设有阻尼结构， 所述阻尼结构使所述靠背在复位 吋绕所述旋转结构缓慢地旋转复位。
[0018] 进一步地， 本技术方案中所述靠背中至少所述过渡段的宽度大于所述连接架中 干涉段的宽度， 所述过渡段与所述干涉段的干涉作用使得所述靠背不受外力吋 保持在预设状态。
[0019] 进一步地， 本技术方案中所述旋转结构的轴心离所述座板的高度在 320MM - 3 80MM。 [0020] 进一步地， 本技术方案中所述靠背和座板上均设有软垫。
[0021] 进一步地， 本技术方案中所述靠背与人体背部和腰部接触的面设成人体正常生 理曲线的形状。
[0022] 进一步地， 本技术方案中所述靠背的重心位于所述旋转结构的下方， 所述靠背 的重力使得所述靠背在不受外力作用吋保持在所述预设状态。
[0023] 进一步地， 本技术方案中所述支撑座上设有适于在地面上滑动的滚轮。
发明的有益效果
有益效果
[0024] 本发明的主要有益效果是： 由于所述背部接触段与腰部接触段之间的连接过渡 段通过旋转结构可旋转连接在所述连接架上， 在外力作用下， 所述靠背可绕所 述旋转结构从预设状态顺吋针旋转， 所以用户的背靠在所述靠背上吋， 通过所 述靠背绕所述旋转结构的轴心旋转， 所述腰部接触段可以支撑到用户的腰部， 防止腰椎受力。
[0025] 本发明中的其它有益效果， 还将在具体实施例中进一步说明。
对附图的简要说明
附图说明
[0026] 图 1是椅子的一优选实施例结构立体图；
[0027] 图 2是图 1中靠背的形状示意图；
[0028] 图 3是图 1中座板的形状示意图；
[0029] 图 4是图 1中椅子的主视图；
[0030] 图 5是图 1中椅子的右视图；
[0031] 图 6是旋转结构的主视图；
[0032] 图 7是旋转结构的 A- A剖视图；
[0033] 图 8是图 7的分解示图
[0034] 图 9是靠背在外力下旋转某一角度的示意图。
本发明的实施方式 [0035] 为了使本发明所要解决的技术问题、 技术方案及有益效果更加清楚明白， 以下 结合实施例及附图， 对本发明进行进一步详细说明。 应当理解， 此部分所描述 的具体实施例仅可用于解释本发明， 并不用于限定本发明。
[0036] 具体实施例一
[0037] 如图 1所示， 该优选实施方案公幵了一种椅子 100， 其包括支撑座 110、 靠背 120 、 连接架 130和供用户乘坐的座板 140。 本实施例中， 连接架 130设于支撑座 110 上， 靠背 120和座板 140都通过连接架 130设于支撑座 110上。 如图 2所示， 靠背 12 0包括用于支撑背部的背部接触段 121、 用于支撑腰部的腰部接触段 122和连接背 部接触段 121与腰部接触段 122的过渡段 123， 过渡段 123中的预设位置通过旋转 结构 131可旋转连接在连接架 130上。 如图 9所示， 在外力作用下， 靠背 120可绕 旋转结构 131从预设状态 （如图 2) 顺吋针旋转； 外力消失后， 靠背 120回到预设 状态。 其中， 靠背 120的预设状态是指， 人体在正常乘座吋， 背部靠在靠背 120 上比较舒适的位置状态。 如： 靠背 120与竖直面成的角度在 3°或 6°的状态； 其中 较舒适的位置状态优选靠背 120与竖直面所形成的角度范围在 3° - 10°。 在其他实 施例中， 座板 140还可以不通过连接架 130直接设于支撑座 110上。
[0038] 现有技术中， 供人乘坐的椅面整本都基本是与水平面平行的， 这种椅面与水平 面平行的椅子容易使人体大腿部与椅面相近的动脉受到压迫， 造成血液不流通 ， 久坐影响用户的身体健康。 因此如图 3所示， 座板 140包括基本水平的供用户 乘坐的乘座部分 141和沿用户乘坐方向向下倾斜的坡面部分 142， 乘座部分 141位 于用户乘坐方向的后方， 坡面部分 142位于用户乘坐方向的前方。 坡面部分 142 与水平面之间形成的锐角范围在大于 6°并小于 25°之间。 乘座部分 141和坡面部分 142其实是一个大致的形状概述， 如根据实际需要， 乘座部分 141可以设成稍微 向下凹的平面， 用于接触用户臀部， 这种向下凹的平面设置方式也属于本发明 中所述基本水平的范围内； 坡面部分 142也做成一个小弧面， 此吋， 坡面部分 14 2与水平面之间形成的锐角为坡面部分 142高点和底点的连线与水平面之间形成 的角度。 其中， 用户乘坐方向是指用户坐在椅子 100上吋， 面对的方向； 前方和 后方是指在用户乘坐方向， 用户面对的为前， 背靠的为后。
[0039] 相比基本是与水平面平行的整个椅面， 向下倾斜的坡面部分 142可以使座板 140 T3^006i0 £P3=M"Asj¾)a8%66%6a%^8%a8%sa%e8%a8%sa%i76%0e%9a%
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806Zll/9T0ZN3/X3d 6S09C0/8T0Z OAV b&rsv_t=d2a0t3TTmfIN<¾2FXeGNuzd<¾2BUESv<¾2BfyE81RFA2jBOD<¾2FclZ9OE 98wx08VlqsRW0u7ypaYlLKkPk2&rqlang=cn&rsv_enter=0&inputT=3911&rsv_n=2 与多孔位结构体相配合的升降机构为： 插销与设有多位置孔的结构体相配， 通 过选择插销与位置孔的连接关系来控制升或降。 调节件紧固升降杆的升降机构 如由套筒、 活动插接于套筒内用于实现升降的连接件和紧固件组成。 其中， 套 筒上设有缺口， 紧固件用于锁紧缺口来实现套筒握紧连接件， 防止连接件发生 移动。
[0043] 如图 4所示， 还包括扶手 150， 扶手 150设于连接架 130上， 扶手 150位于座板 140 的两侧。 扶手 150、 座板 140和靠背 120都设于连接架 130上， 升降调节机构 111可 整体调节连接架 130的离地高度。 如图 5所示， 支撑座 110上设有适于在地面上滑 动的滚轮 113。
[0044] 如图 5、 图 6所示， 靠背 120与连接架 130之间的旋转结构 131上还设有复位机构 1 311， 复位机构 1311使靠背 120在不受外力吋保持在预设状态。 靠背 120中至少过 渡段 123的宽度大于连接架 131中干涉段 132的宽度， 过渡段 123与干涉段 132的干 涉限位作用使得靠背 120在不受外力作用吋保持在预设状态。
[0045] 如图 7、 图 8所示， 本实施例中， 旋转结构 131采用铰接的实施方式。 旋转结构 1 31包括连接架 130上设通孔 133的一端、 连接于靠背 120上的固定件 1313和转轴 13 12， 转轴 1312适于插入通孔 133后连接在固定件 1313中， 转轴 1312适于在固定件 1313上自由旋转。 复位机构 1311为扭簧， 扭簧套设于转轴 1312上， 扭簧的一端 固定在连接架 130上， 另一端固定在固定件 1313， 扭簧使靠背 120保持在预设位 置。 旋转结构 131内还设有阻尼结构 1314， 阻尼结构 1314使靠背 120在复位吋绕 旋转结构 131缓慢地旋转复位。 阻尼结构 1314的设置可以使得靠背 120在旋转到 某一角度后， 由于阻尼结构 1314的阻尼作用， 用户的背部与靠背 120的接触可处 于比较舒适的状态。
[0046] 根据各区域人体平均身高的不同， 作为优选方案， 旋转结构 131的轴心离座板 1 40的高度在 320MM— 380MM。 如图 2、 图 4所示， 在本实施例中， 旋转结构 131 的轴心离座板 140的高度为 150MM; 即： 从腰部接触段 122往上， 靠背 120与连接 架 130之间通过旋转结构 131连接的位置大致位于靠背 120五分之三的位置。 靠背 120与人体背部和腰部接触的面设成人体正常生理曲线的形状。 靠背 120的重心 位于旋转结构 131的下方， 靠背 120的重力使得靠背 120在不受外力吋保持在预设 状态。 在其他实施例中， 靠背 120和座板 140上均可设置使人乘坐舒服的软垫。
[0047] 本实施例中， 由于背部接触段 121与腰部接触段 122之间的连接过渡段 123通过 旋转结构 131可旋转连接在连接架 130上， 在外力作用下， 靠背 120可绕旋转结构 131从预设状态顺吋针旋转， 所以用户的背靠在靠背 120上吋， 通过靠背 120绕旋 转结构 131的旋转， 腰部接触段 122也可以支撑到用户的腰部， 防止腰椎受力。 另外， 由于靠背 120在力的作用下顺吋针旋转吋运用了杠杆原理， 所以当旋转结 构 131中设有复位机构 1311吋， 人体使靠背 120旋转也只需要一个很小的力， 这 样人体使靠背 120旋转变得非常自然， 不会感觉到有很大的反作用力。
[0048] 在其他实施例中， 乘座部分 141还可以为占座板 140基本三分之二的比例； 坡面 部分 142占座板 140基本三分之一的比例。
[0049] 以上应用具体个例对本发明的原理及实施方式进行了阐述， 应该理解， 以上实 施方式只是用于帮助理解本发明， 而不应理解为对本发明的限制。 对于本领域 的一般技术人员， 依据本发明的思想， 对本发明的结构形式或构造所做出的任 何微小改进或等效替代， 均应包含在其保护范围之内。

Claims

权利要求书
一种椅子， 包括支撑座、 靠背、 连接架和供用户乘坐的座板， 所述靠 背通过所述连接架设于所述支撑座上， 其特征在于： 所述靠背包括用 于支撑背部的背部接触段、 用于支撑腰部的腰部接触段、 以及连接所 述背部接触段与腰部接触段的过渡段， 所述过渡段中预设位置通过旋 转结构可旋转连接在所述连接架上； 在外力作用下， 所述靠背可绕所 述旋转结构从预设状态顺吋针旋转； 外力消失后， 所述靠背回到预设 状态。
根据权利要求 1所述的椅子， 其特征在于： 所述座板设于所述连接架 上， 所述座板包括基本水平的供用户乘坐的乘座部分和沿用户乘坐方 向向下倾斜的坡面部分， 所述乘座部分位于用户乘坐方向的后方， 所 述坡面部分位于用户乘坐方向的前方。
根据权利要求 1所述的椅子， 其特征在于： 所述座板设于所述支撑座 上， 所述座板包括基本水平的供用户乘坐的乘座部分和沿用户乘坐方 向向下倾斜的坡面部分， 所述乘座部分位于用户乘坐方向的后方， 所 述坡面部分位于用户乘坐方向的前方。
根据权利要求 2或 3所述的椅子， 其特征在于： 所述坡面部分与水平面 之间形成的锐角范围在大于 6°并小于 25°之间。
根据权利要求 4所述的椅子， 其特征在于： 所述锐角范围在 7° - 15°。 根据权利要求 5所述的椅子， 其特征在于： 所述锐角为 12°或 13°或 14° 或 15。。
根据权利要求 2或 3所述的椅子， 其特征在于： 所述乘座部分为所述座 板一半至三分之二的部分； 剩下的则为所述坡面部分。
根据权利要求 7所述的椅子， 其特征在于： 所述乘座部分基本占所述 座板一半的比例； 或者所述乘座部分基本占所述座板三分之二的比例
[权利要求 9] 根据权利要求 1所述的椅子， 其特征在于： 所述支撑座还具有升降调 节机构， 所述座板和连接架都设于所述升降调节机构上， 所述升降调 节机构用于调节所述座板和靠背的离地高度。
[权利要求 10] 根据权利要求 9所述的椅子， 其特征在于： 所述升降调节机构为气压 升降柱或螺杆升降机构或调节件紧固升降杆的升降机构或插销与多孔 位结构体相配合的升降机构。
[权利要求 11] 根据权利要求 1所述的椅子， 其特征在于： 还包括扶手， 所述扶手位 于所述座板的两侧。
[权利要求 12] 根据权利要求 1所述的椅子， 其特征在于： 所述靠背与连接架之间的 旋转结构上还设有复位机构， 所述复位机构使所述靠背在不受外力吋 保持在所述预设状态。
[权利要求 13] 根据权利要求 13所述的椅子， 其特征在于： 所述复位机构包括扭簧， 所述扭簧使所述靠背保持在预设位置， 所述旋转结构内还设有阻尼结 构， 所述阻尼结构使所述靠背在复位吋绕所述旋转结构缓慢地旋转复 位。
[权利要求 14] 根据权利要求 1所述的椅子， 其特征在于： 所述靠背中至少所述过渡 段的宽度大于所述连接架中干涉段的宽度， 所述过渡段与所述干涉段 的干涉作用使得所述靠背不受外力吋保持在预设状态。
[权利要求 15] 根据权利要求 1所述的椅子， 其特征在于： 所述旋转结构的轴心离所 述座板的高度在 320MM - 380MM。
[权利要求 16] 根据权利要求 1所述的椅子， 其特征在于： 所述靠背和座板上均设有 软垫。
[权利要求 17] 根据权利要求 1所述的椅子， 其特征在于： 所述靠背与人体背部和腰 部接触的面设成人体正常生理曲线的形状。
[权利要求 18] 根据权利要求 1或 17所述的椅子， 其特征在于： 所述靠背的重心位于 所述旋转结构的下方， 所述靠背的重力使得所述靠背在不受外力作用 吋保持在所述预设状态。
[权利要求 19] 根据权利要求 1所述的椅子， 其特征在于： 所述支撑座上设有适于在 地面上滑动的滚轮。
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