JP2001128789A - Chair - Google Patents

Chair

Info

Publication number
JP2001128789A
JP2001128789A JP31619599A JP31619599A JP2001128789A JP 2001128789 A JP2001128789 A JP 2001128789A JP 31619599 A JP31619599 A JP 31619599A JP 31619599 A JP31619599 A JP 31619599A JP 2001128789 A JP2001128789 A JP 2001128789A
Authority
JP
Japan
Prior art keywords
backrest
backrest plate
plate
chair
restricting means
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.)
Granted
Application number
JP31619599A
Other languages
Japanese (ja)
Other versions
JP4261001B2 (en
Inventor
Hiroshi Masunaga
浩 益永
Satoshi Nagamitsu
諭司 長光
Masahito Kadomichi
将人 角道
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.)
Okamura Corp
Original Assignee
Okamura Corp
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 Okamura Corp filed Critical Okamura Corp
Priority to JP31619599A priority Critical patent/JP4261001B2/en
Publication of JP2001128789A publication Critical patent/JP2001128789A/en
Application granted granted Critical
Publication of JP4261001B2 publication Critical patent/JP4261001B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a chair equipped with an optimal bend angle and a bend strength in response to the body weight, the figure and the type of work of a sitter by specifying the forward moving distance of the lower end of a back rest plate when a load is applied to the back rest, and restricting the L-shaped bend-warping angle of the back rest plate. SOLUTION: At the rear section of a seat section 16, a backrest frame 18 is erected. At the upper section and the lower section of the backrest frame 18, the upper section and the lower section of a backrest plate 26 are attached in such a manner that the upper section and the lower section may be rotatable around a horizontal axis in the lateral direction, and at least one of the upper section and the lower section may be vertically movable. Then, when an intermediate section of the back reset plate 26 is pressed backward, the backrest plate 26 is made to be bend-warpable into an L-shape for this chair. In such a chair, a restricting means which restricts the rotation of the lower end section 26a of the backrest plate 26 around the horizontal axis is provided between the lower section of the backrest frame 18 and the lower end 26a pf the backrest plate 26. Thus, the bent-warping angle of the backrest plate 26 is adjusted.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、パーソナルコンピ
ュータ等のＯＡ機器の操作に適するとともに、リクライ
ニング時に安定した姿勢を確保できるようにした椅子に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair suitable for operation of OA equipment such as a personal computer and capable of securing a stable posture during reclining.

【０００２】[0002]

【従来の技術】パーソナルコンピュータ等のＯＡ機器を
使用して行われるデスクワークにおける様々な姿勢や、
作業姿勢の変化に対応して、適切に身体を支持するため
に、座面や背凭れを、傾斜又はリクライニングさせる機
構を搭載した椅子は公知である。この傾斜又はリクライ
ニングした際にも、机上のモニタ画面を見やすくするた
め、頭部を起こすように背凭れの中間部分で、くの字に
後方に屈撓させる椅子も、既に提案されている。2. Description of the Related Art Various postures in desk work performed using OA equipment such as a personal computer,
A chair equipped with a mechanism for tilting or reclining a seat surface or a backrest in order to appropriately support a body in response to a change in a working posture is known. In order to make it easier to see the monitor screen on the desk even when the user leans or reclines, there has been already proposed a chair that bends backwards in a U-shape at an intermediate portion of the backrest so as to raise the head.

【０００３】[0003]

【発明が解決しようとする課題】しかし、この背凭れの
屈撓は、着座者の上半身の重量が背凭れに加わって生ず
るものであるので、着座者の体重、体型、さらには執務
内容によって異ならざるを得ない。However, since the bending of the backrest is caused by the weight of the upper body of the occupant added to the backrest, the bending depends on the weight, the body shape, and the work content of the occupant. I have no choice.

【０００４】本発明は、背凭れに荷重が加えられた際の
背凭れ板の下端の前方への移動距離を規制して、背凭れ
板のくの字状の屈撓角度を制限し、着座者の体重、体
型、執務内容に応じた最適な屈撓角度と屈撓強度を備え
た椅子を提供することを目的としている。The present invention regulates the forward moving distance of the lower end of the backrest plate when a load is applied to the backrest, thereby restricting the bent angle of the backrest plate. It is an object of the present invention to provide a chair having an optimum bending angle and bending strength according to the weight, body shape and work content of a person.

【０００５】[0005]

【課題を解決するための手段】本発明によると、上記課
題は、次のようにして解決される。 （１）着座部の後部に背凭れフレームを立設し、この背
凭れフレームの上部と下部に、背凭れ板の上部と下部
を、左右方向の水平軸線まわりに回動可能に、かつその
上部と下部の少なくとも一方を、上下移動可能に取り付
け、前記背凭れ板の中間部が後方に押圧された際に、く
の字に屈撓するようにした椅子において、前記背凭れフ
レームの下部と前記背凭れ板の下端部とを連結して、前
記水平軸線まわりの回動を規制する規制手段を設け、該
規制手段により背凭れ板の屈撓角度を調節するようにす
る。According to the present invention, the above-mentioned problem is solved as follows. (1) A backrest frame is erected at the rear of the seating portion, and the upper and lower portions of the backrest plate are rotatable around the horizontal axis in the left-right direction at the upper and lower portions of the backrest frame. At least one of the lower part and the lower part is mounted so as to be vertically movable, and when the intermediate part of the backrest plate is pressed backward, the chair is bent in a V-shape. A restricting means for restricting the rotation about the horizontal axis is provided by connecting the lower end of the backrest plate, and the bending angle of the backrest plate is adjusted by the restricting means.

【０００６】（２）上記(１)項において、背凭れ板の下
部の背面に左右方向に延びる水平軸を設け、該水平軸
を、背凭れフレームの下部に設けた水平軸受により支持
する。(2) In the above item (1), a horizontal shaft extending in the left-right direction is provided on a back surface of a lower portion of the backrest plate, and the horizontal shaft is supported by a horizontal bearing provided at a lower portion of the backrest frame.

【０００７】（３）上記(１)または(２)項において、規
制手段を、背凭れ板の下端とこれに対向する背凭れフレ
ームとの間に配設され、前記背凭れ板の下端の前方への
移動を調節可能に規制するものとする。(3) In the above item (1) or (2), the restricting means is disposed between a lower end of the backrest plate and a backrest frame opposed thereto, and is provided in front of the lower end of the backrest plate. Movement to is regulated in an adjustable manner.

【０００８】（４）上記(３)項において、規制手段を、
背凭れ板と背凭れフレームのいずれか一方に固定された
固定部材を有し、該固定部材が、前記背凭れ板の回動の
際、他方または他方に固定された固定片に当接すること
により相対移動距離を調節可能に規制するものとする。(4) In the above item (3), the regulating means is
A fixing member fixed to one of the backrest plate and the backrest frame, and the fixing member abuts on a fixing piece fixed to the other or the other when the backrest plate rotates. The relative movement distance shall be regulated so as to be adjustable.

【０００９】（５）上記(１)〜(４)項のいずれかにおい
て、規制手段を、背凭れ板と背凭れフレームの少なくと
も一方に取り付けた紐と、該紐の前後方向にへの移動限
度を定めるストッパーとを備えるものとする。(5) In any one of the above items (1) to (4), the restricting means may include a string attached to at least one of the backrest plate and the backrest frame, and a movement limit of the string in the front-rear direction. And a stopper that determines

【００１０】（６）上記(１)〜(３)項のいずれかにおい
て、規制手段を、背凭れ板と背凭れフレームとの双方に
形成したフックに掛け渡された紐状の弾性材料の輪を備
えるものとする。(6) In any one of the above items (1) to (3), the restricting means may be a loop of a string-shaped elastic material suspended over hooks formed on both the backrest plate and the backrest frame. Shall be provided.

【００１１】（７）上記(２)項において、規制手段を、
背凭れ板の水平軸の下部に設けた突起と、背凭れフレー
ムの軸受に前記突起を収容するように設けられ、その回
動範囲を制限する円弧状の溝とから構成する。(7) In the above item (2), the regulating means may be
It comprises a projection provided below the horizontal axis of the backrest plate, and an arc-shaped groove provided in the bearing of the backrest frame to accommodate the projection and restricting the rotation range thereof.

【００１２】（８）上記(７)項において、円弧状の溝の
内部に弾性材料を少なくとも部分的に充填する。(8) In the above item (7), the inside of the arc-shaped groove is at least partially filled with the elastic material.

【００１３】（９）上記(１)項において、規制手段を、
背凭れ板の下端を後方に延長し、この延長部分の前後方
向に穿設した複数の孔と、前記延長部分に対応して背凭
れフレームに枢着され、前記孔に選択的に係止されるフ
ックとからなるものとする。(9) In the above item (1), the control means may be
The lower end of the backrest plate is extended rearward, a plurality of holes drilled in the front-rear direction of the extended portion, and pivotally attached to the backrest frame corresponding to the extended portion, and selectively locked in the holes. Hook.

【００１４】[0014]

【発明の実施の形態】次に、本発明にかかる椅子の実施
形態を、添付図面を参照しながら説明する。図１は、リ
クライニング姿勢にある本発明の椅子の側面図で、図２
は、その背凭れフレームの要部と背凭れ板とを分解して
示す斜視図である。図１に示すように、キャスター付き
脚部(10)を備える支基(12)には、リクライニング機構(1
4)が設けられ、その上が着座部(16)となっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a chair according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view of the chair of the present invention in a reclining position, and FIG.
FIG. 4 is an exploded perspective view showing a main part of the backrest frame and a backrest plate. As shown in FIG. 1, a supporting base (12) having a leg (10) with a caster has a reclining mechanism (1).
4) is provided, on which a seating portion (16) is provided.

【００１５】リクライニング機構(14)を構成する背凭れ
フレーム(18)は、左右１対の金属または硬質合成樹脂製
の杆材からなり、その下部の横杆部(10a)は前方に延出
し、この図では示していないが、その先端は、座板と連
動するようにして、支基(12)に枢着され、後方へ傾動可
能になっている。この構造は、一般に背座シンクロリク
ライニングメカニズムとして知られている。The backrest frame (18) constituting the reclining mechanism (14) is made of a pair of left and right metal or hard synthetic resin rods, and its lower horizontal rod (10a) extends forward, Although not shown in this figure, the tip is pivotally attached to the support base (12) so as to be linked with the seat plate, and can be tilted rearward. This structure is generally known as a back seat synchro reclining mechanism.

【００１６】左右１対の上部の縦杆部(18b)は、上下２
箇所で、互いに逆向きのくの字状に屈曲して形成されて
いる、すなわち、下部では、前方に凸に、上部では、後
方に凸となるように屈曲されている。The upper pair of left and right vertical rods (18b)
It is bent so that it is bent in the shape of an inverted letter at each location, that is, it is bent forward in the lower part and backward in the upper part.

【００１７】図２から明らかなように、縦杆部(18b)の
上端同士と下端同士は、それぞれ左右方向に延びる連結
杆(20a)(20b)により一体に連結されている。As is apparent from FIG. 2, the upper end and the lower end of the vertical rod portion (18b) are integrally connected by connecting rods (20a) (20b) extending in the left-right direction.

【００１８】縦杆部(18b)の下部の屈曲部の前面には、
上部が開口する左右方向の水平軸受(22)が、前方に突出
するようにして形成されている。縦杆部(18b)の上部の
前面には、図２に示すように、係止頭部を先端に有する
係合突起(24)を前向きに突設するとともに、その根元部
分は、左右方向の水平軸線を中心とする曲面(24a)とさ
れている。On the front surface of the lower bent portion of the vertical rod portion (18b),
A left-right horizontal bearing (22) having an upper opening is formed so as to protrude forward. As shown in FIG. 2, an engaging projection (24) having a locking head at the tip is projected forward on the front surface of the upper part of the vertical rod portion (18b), and its root portion is in the left-right direction. It is a curved surface (24a) centered on the horizontal axis.

【００１９】背凭れフレーム(18)の前面には、背凭れ板
(26)が取り付けられている。図１には、クッション(28)
が取り付けられた背凭れ板(26)を背凭れフレーム(18)に
取り付けた状況を、また、図２には、背凭れフレーム(1
8)から外された状態の背凭れ板(26)が示されている。A backrest plate is provided on the front of the backrest frame (18).
(26) is attached. In FIG. 1, the cushion (28)
FIG. 2 shows a state in which the backrest plate (26) having the backrest attached thereto is attached to the backrest frame (18).
The backrest plate (26) is shown detached from 8).

【００２０】背凭れ板(26)は、図２に示すように、周辺
部を除いて、エキスパンデッドメタル状の形状に中抜き
され、中間部左右両端部に弱体化部分(30)を形成した、
硬質合成樹脂等の硬質弾性材の成型板である。As shown in FIG. 2, the backrest plate (26) is hollowed out in an expanded metal shape except for the peripheral portion, and weakened portions (30) are formed at the left and right ends of the intermediate portion. did,
It is a molded plate of a hard elastic material such as a hard synthetic resin.

【００２１】背凭れ板(26)の上部の左右両側部には、背
凭れフレーム(18)の上部の係合突起(24)に対応する位置
において、係合孔(28)が穿設されている。係合孔(28)
は、係合突起(24)を通過させる大径孔と、これに続いて
上方に連設した小径長孔とからなる、いわゆるダルマ孔
の形状をしている。Engagement holes (28) are formed in the left and right sides of the upper portion of the backrest plate (26) at positions corresponding to the engagement projections (24) on the upper portion of the backrest frame (18). I have. Engagement hole (28)
Has a so-called daruma hole shape composed of a large-diameter hole through which the engagement projection (24) passes, and a small-diameter long hole continuously connected upward.

【００２２】背凭れ板(26)の下部の左右両側部には、背
凭れフレーム(18)の下部の軸受(22)と対応する位置に、
軸受(22)に上方より圧嵌される左右方向の短軸形の水平
軸(32)が形成されている。The left and right sides of the lower portion of the backrest plate (26) are located at positions corresponding to the bearings (22) at the lower portion of the backrest frame (18).
A horizontal short-axis horizontal shaft (32) is formed on the bearing (22) so as to be press-fitted from above.

【００２３】図２において、背凭れフレーム(18)の上部
の係合突起(24)を、背凭れ板(26)の上部の係合孔(28)の
大径孔に差し込み、この状態で、背凭れ板(26)の下部の
水平軸(32)を、背凭れフレーム(18)の下部の水平軸受(2
2)の開口部に臨ませ、背凭れ板(26)を、そのまま押し下
げると、図１に示すように両者は連結される。In FIG. 2, the upper engaging projection (24) of the backrest frame (18) is inserted into the larger diameter hole of the upper engaging hole (28) of the backrest plate (26). The horizontal shaft (32) at the lower part of the backrest plate (26) is connected to the horizontal bearing (2) at the lower part of the backrest frame (18).
When the backrest plate (26) is pressed down as it is in the opening of (2), the two are connected as shown in FIG.

【００２４】この状態において、背凭れに着座者の上半
身による荷重が加わると、上部の係合突起(24)は、係合
孔(28)の小径長孔内を上下方向に滑動して、背凭れ板(2
6)の中間部の弱体化部分(30)でくの字に屈撓し、例えば
図１において想像線により示すように、中間部が落ち込
む。本発明の椅子は、この屈撓を規制する規制手段を備
えている。In this state, when a load due to the upper body of the occupant is applied to the backrest, the upper engaging projection (24) slides vertically in the small-diameter elongated hole of the engaging hole (28), and Leaning board (2
In the weakened part (30) in the middle part of (6), it bends in the shape of a letter, for example, as shown by the imaginary line in FIG. The chair of the present invention includes a restricting means for restricting the bending.

【００２５】図３に示す規制手段の第１の実施形態で
は、背凭れフレーム(18)の連結杆(20b)の中央の前面
に、前向きのＬ金具(34)が前向きに取り付けられてお
り、このＬ金具(34)における前方を向く水平片(34a)の
下側に、上方を向く係止腕(36a)を有する後向きの係止
用Ｌ金具(36)が配設されている。係止用Ｌ金具(36)の前
端の係止片(36a)は、背凭れ板(26)の下端(26a)の前面に
当接することができる。In the first embodiment of the restricting means shown in FIG. 3, a front-facing L-bracket (34) is attached to the front surface at the center of the connecting rod (20b) of the backrest frame (18). A rearward locking L bracket (36) having a locking arm (36a) pointing upward is disposed below the horizontal piece (34a) pointing forward in the L bracket (34). The locking piece (36a) at the front end of the locking metal fitting (36) can abut on the front surface of the lower end (26a) of the backrest plate (26).

【００２６】図示していないが、Ｌ金具(34)の水平片(3
4a)には丸孔を、係止用Ｌ金具(36)の水平片(36b)には長
孔を穿設してあり、ボルト(38a)を、両孔に挿通して、
両端にナット(38b)を取り付ける。Although not shown, the horizontal piece (3) of the L bracket (34)
4a) has a round hole, and the horizontal piece (36b) of the locking L bracket (36) has a long hole, and a bolt (38a) is inserted through both holes.
Attach nuts (38b) to both ends.

【００２７】この構造によれば、ナット(38b)が締め付
けられてない状態においては、背凭れ板(26)の下端(26
a)は、係止用Ｌ金具(36)の長孔の範囲内で前方への移動
を許容されるのみである。また、係止用Ｌ金具(36)の前
端の位置を適宜位置に調節して、ナット(38b)を締め込
んで固定すると、背凭れ板(26)の下端(26a)の移動をゼ
ロとすることができる。According to this structure, when the nut (38b) is not tightened, the lower end (26) of the backrest plate (26) is
In (a), only forward movement is allowed within the long hole of the locking L-bracket (36). When the position of the front end of the locking L-bracket (36) is adjusted to an appropriate position and the nut (38b) is tightened and fixed, the movement of the lower end (26a) of the backrest plate (26) is reduced to zero. be able to.

【００２８】図４に示す第２の実施形態では、前述の第
１の実施形態と同じＬ金具(34)、係止用Ｌ金具(36)、ボ
ルト(38a)、ナット(38b)を有するが、係止用金具(36)の
前端において上方を向く係止片(36a)は、直接に背凭れ
板(26)の下端(26a)に当接するのではなく、下端(26a)か
ら後方に延びる係止片(40)の長孔(40a)内に挿通されて
いる。この構成によれば、背凭れ板(26)の下端(26a)
は、係止片(40)の長孔(40a)の範囲内で移動可能であ
り、移動可能範囲は、移動前に、ボルト(38a)とナット
(38b)とによる締め付けられる係止用Ｌ金具(36)の調節
可能な設定固定位置により決定される。The second embodiment shown in FIG. 4 has the same L fittings (34), locking L fittings (36), bolts (38a), and nuts (38b) as in the first embodiment described above. The locking piece (36a) facing upward at the front end of the locking bracket (36) does not directly contact the lower end (26a) of the backrest plate (26), but extends rearward from the lower end (26a). The locking piece (40) is inserted into the elongated hole (40a). According to this configuration, the lower end (26a) of the backrest plate (26)
Can be moved within the range of the long hole (40a) of the locking piece (40), and the movable range is before the bolt (38a) and nut
(38b) is determined by the adjustable set and locked position of the locking L-bracket (36) to be tightened.

【００２９】図５に示す第３の実施形態では、背凭れ板
(26)の下端(26a)には、後方に水平に延びるボルト(44)
が取り付けられ、背凭れフレーム(18)の連結杆(20b)に
取り付けた金属片(42)の孔(42a)を緩く挿通し、その後
端部にナット(46)が螺合されている。この構成によれ
ば、ナット(46)をボルト(44)に締め込む程度により、背
凭れ板(26)の下端(26a)の前方への移動距離を任意に設
定することができる。In the third embodiment shown in FIG.
At the lower end (26a) of (26), a bolt (44) extending horizontally rearward
Is loosely inserted through the hole (42a) of the metal piece (42) attached to the connecting rod (20b) of the backrest frame (18), and a nut (46) is screwed into the rear end. According to this configuration, the forward moving distance of the lower end (26a) of the backrest plate (26) can be arbitrarily set depending on the degree to which the nut (46) is tightened to the bolt (44).

【００３０】図６に示す第４の実施形態では、第５図に
示す実施形態と同じく、背凭れ板(26)の下端(26a)から
後方に水平に延びるボルト(44)、これに螺合するナット
(46)が用いられているが、背凭れフレームの連結杆(20
b)には、前方に向かって平面視コ字状に折曲され、かつ
中央に丸孔(48a)が穿設された金属部材(48)が固着され
ている。この実施形態は、機能的には、第３の実施形態
と全く同じである。In the fourth embodiment shown in FIG. 6, similarly to the embodiment shown in FIG. 5, a bolt (44) horizontally extending rearward from the lower end (26a) of the backrest plate (26) is screwed to this. Nut
(46) is used, but the connecting rod (20
In b), a metal member (48) bent forward in a U-shape in a plan view and having a round hole (48a) in the center is fixed. This embodiment is functionally the same as the third embodiment.

【００３１】図７に示す第５の実施形態では、背凭れフ
レーム(18)の連結杆(20b)の中央の下部に、下方に向か
って垂下し、かつ中央に開口を有する係止部材(50)を取
り付け、背凭れ板(26)の下端(26a)の中央に取り付けた
帯状片(52)を、係止部材(50)の開口に挿通し、この帯状
片(52)の端部に、任意の位置で固定可能なストッパー(5
4)を取り付けてある。このストッパー(54)の調節可能な
固定位置で、背凭れ板(26)の下端(26a)の前方への移動
距離が設定される。In the fifth embodiment shown in FIG. 7, a locking member (50) which hangs downward and has an opening at the center is provided below the center of the connecting rod (20b) of the backrest frame (18). ), A band-like piece (52) attached to the center of the lower end (26a) of the backrest plate (26) is inserted through the opening of the locking member (50), and the end of this band-like piece (52) Stopper that can be fixed at any position (5
4) is attached. The distance in which the lower end (26a) of the backrest plate (26) moves forward is set at the adjustable fixed position of the stopper (54).

【００３２】図８に示す第６の実施形態は、上述の第５
の実施形態と同様に帯状片(52)を用いるが、背凭れフレ
ーム(18)の連結杆(20)に直接孔(56)を穿設し、この孔(5
6)に帯状片(52)を挿通して、任意の位置で固定可能なス
トッパー(54)を取り付けてある。このストッパー(54)の
調節可能な固定位置で、背凭れ板(26)の下端(26a)の前
方への移動距離が任意に設定される。The sixth embodiment shown in FIG.
A strip (52) is used in the same manner as in the embodiment, but a hole (56) is directly formed in the connecting rod (20) of the backrest frame (18), and the hole (5) is formed.
A strip (52) is inserted through 6), and a stopper (54) that can be fixed at an arbitrary position is attached. At the adjustable fixed position of the stopper (54), the forward moving distance of the lower end (26a) of the backrest plate (26) is set arbitrarily.

【００３３】図９に示す第７の実施形態では、ゴムのよ
うな弾性材料の紐の輪(52a)を、背凭れフレーム(18)の
連結杆(20b)に形成したフック(58)と背凭れ板(26)の下
端(26a)に形成したフック(60)との間に掛け渡してあ
る。In the seventh embodiment shown in FIG. 9, a string loop (52a) made of an elastic material such as rubber is connected to a hook (58) formed on a connecting rod (20b) of a backrest frame (18). It is suspended between a hook (60) formed at the lower end (26a) of the backing plate (26).

【００３４】図１０に示す第８の実施形態では、背凭れ
板(26)の水平軸(32)には、その下部に突起(62)を設け、
他方、背凭れフレームの水平軸受(22)には、突起(62)を
収容し、その回動範囲を制限する円弧状の溝(64)を形成
し、この溝(64)内の少なくとも一部分にコイルばねのよ
うな弾性部材(66)を収容してある。このようにして、水
平軸(32)の回動、従って背凭れ板(26)の下端(26a)の回
動は、溝(64)内の突起(62)の回動範囲に制限される。In the eighth embodiment shown in FIG. 10, a projection (62) is provided below the horizontal shaft (32) of the backrest plate (26).
On the other hand, the horizontal bearing (22) of the backrest frame is formed with an arc-shaped groove (64) that accommodates the projection (62) and limits the rotation range thereof, and at least a part of the groove (64). It contains an elastic member (66) such as a coil spring. In this way, the rotation of the horizontal shaft (32), and hence the lower end (26a) of the backrest plate (26), is limited to the rotation range of the projection (62) in the groove (64).

【００３５】図１１に示す第９の実施形態では、背凭れ
板(26)の下端から後方へ水平に延びる延長部分(26b)が
形成されており、この延長部分(26b)には、前後方向に
複数の孔(68)が穿設されている。他方、背凭れフレーム
(18)の連結杆(20b)には、下向きのフック(72)が枢軸(7
0)によって枢着されている。このフック(72)を任意の孔
(68)に係止することにより、背凭れ板(26)の下端(26a)
の位置を任意位置に固定することができる。In the ninth embodiment shown in FIG. 11, an extension (26b) extending horizontally from the lower end of the backrest plate (26) is formed. Are provided with a plurality of holes (68). On the other hand, the backrest frame
The connecting rod (20b) of (18) has a downward hook (72) on the pivot (7).
It is pivoted by 0). Insert this hook (72) into any hole
(68), the lower end (26a) of the backrest plate (26)
Can be fixed at an arbitrary position.

【００３６】[0036]

【発明の効果】請求項１記載の発明によれば、背凭れ板
下端部の前方回動移動距離を規制して、着席者の体重、
体型及び執務内容に応じた適切な背凭れ板の屈撓角度及
び屈撓強度を得ることができる。According to the first aspect of the present invention, the forward rotation movement distance of the lower end portion of the backrest plate is regulated, so that the weight of the occupant can be reduced.
It is possible to obtain an appropriate bending angle and bending strength of the backrest plate according to the body shape and the work content.

【００３７】請求項２記載の発明によれば、背凭れ板の
下端の回動を、背凭れ板の下部の水平軸を中心とする回
動とすることができる。According to the second aspect of the present invention, the rotation of the lower end of the backrest plate can be performed around the horizontal axis at the lower portion of the backrest plate.

【００３８】請求項３記載の発明によれば、背凭れ板の
下端の移動距離、従って背凭れ板の中間部の屈撓を所望
範囲に制限することことができる。According to the third aspect of the present invention, it is possible to limit the moving distance of the lower end of the backrest plate, that is, the bending of the intermediate portion of the backrest plate to a desired range.

【００３９】請求項４記載の発明によれば、単な構成で
確実な規制手段を形成することができる。According to the fourth aspect of the present invention, a reliable regulating means can be formed with a simple configuration.

【００４０】請求項５記載の発明によれば、規制手段が
紐であるので、作動時のきしみ音の発生が全くない。According to the fifth aspect of the present invention, since the restricting means is a string, no squeak noise is generated during operation.

【００４１】請求項６記載の発明によれば、背凭れ板の
下端の前方への移動制限を、簡単な構成で弾性力を作用
させて行うことができる。According to the sixth aspect of the invention, the forward movement of the lower end of the backrest plate can be restricted by applying elastic force with a simple structure.

【００４２】請求項７記載の発明によれば、規制手段
を、全く外部に露出させずに配設することができる。According to the seventh aspect of the present invention, the regulating means can be provided without being exposed to the outside at all.

【００４３】請求項８記載の発明によれば、水平軸の回
動の規制を弾性的に行うことができる。According to the eighth aspect of the invention, the rotation of the horizontal axis can be restricted elastically.

【００４４】請求項９記載の発明によれば、背凭れ板の
下端を、複数の前後位置に固定することができる。According to the ninth aspect, the lower end of the backrest plate can be fixed at a plurality of front and rear positions.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明を適用する椅子をリクライニング位置に
おいて示す側面図である。FIG. 1 is a side view showing a chair to which the present invention is applied in a reclining position.

【図２】図１に示した椅子の背凭れフレームの一部と背
凭れ板とを分解状態で示す斜視図である。FIG. 2 is a perspective view showing a part of a backrest frame and a backrest plate of the chair shown in FIG. 1 in an exploded state.

【図３】本発明による背凭れ板の下端部の規制手段の第
１の実施形態を示す部分拡大断面図である。FIG. 3 is a partially enlarged cross-sectional view showing a first embodiment of a regulating means for a lower end portion of a backrest plate according to the present invention.

【図４】同じく、第２の実施形態を示す部分斜視図であ
る。FIG. 4 is a partial perspective view showing the second embodiment.

【図５】同じく、第３の実施形態を示す部分拡大断面図
である。FIG. 5 is a partially enlarged sectional view showing a third embodiment.

【図６】同じく、第４の実施形態を示す部分斜視図であ
る。FIG. 6 is a partial perspective view showing the fourth embodiment.

【図７】同じく、第５の実施形態を示す部分斜視図であ
る。FIG. 7 is a partial perspective view showing the fifth embodiment.

【図８】同じく、第６の実施形態を示す部分拡大断面図
である。FIG. 8 is a partially enlarged sectional view showing a sixth embodiment.

【図９】同じく、第７の実施形態を示す部分斜視図であ
る。FIG. 9 is a partial perspective view showing the seventh embodiment.

【図１０】同じく、第８の実施形態を示す部分拡大断面
図である。FIG. 10 is a partially enlarged sectional view showing the eighth embodiment.

【図１１】同じく、第９の実施形態を示す部分拡大断面
図である。FIG. 11 is a partially enlarged sectional view showing a ninth embodiment.

【符号の説明】[Explanation of symbols]

(10)脚部 (12)支基 (14)リクライニング機構 (16)着座部 (18)背凭れフレーム (18a)横杆部 (18b)縦杆部 (20a)(20b)連結杆 (22)水平軸受 (24)係合突起 (24a)曲面 (26)背凭れ板 (26a)下端 (26b)延長部分 (28)係合孔 (30)弱体化部分 (32)水平軸 (34)Ｌ金具 (34a)水平片 (36)係止用Ｌ金具 (36a)係止片 (38a)ボルト (38b)ナット (40)係止片 (40a)長孔 (42)金属片 (42a)孔 (44)ボルト (46)ナット (48)金属部材 (48a)丸孔 (50)係止部材 (52)帯状片 (52a)紐の輪 (54)ストッパー (56)孔 (58)(60)フック (62)突起 (64)溝 (66)弾性材料 (68)孔 (70)枢軸 (72)フック (10) Leg (12) Support (14) Reclining mechanism (16) Seating part (18) Backrest frame (18a) Horizontal rod (18b) Vertical rod (20a) (20b) Connecting rod (22) Horizontal Bearing (24) Engagement protrusion (24a) Curved surface (26) Backrest plate (26a) Lower end (26b) Extension (28) Engagement hole (30) Weakened part (32) Horizontal shaft (34) L bracket (34a ) Horizontal piece (36) L bracket for locking (36a) Locking piece (38a) Bolt (38b) Nut (40) Locking piece (40a) Long hole (42) Metal piece (42a) Hole (44) Bolt ( 46) Nut (48) Metal member (48a) Round hole (50) Locking member (52) Strip (52a) String loop (54) Stopper (56) Hole (58) (60) Hook (62) Projection ( 64) Groove (66) Elastic material (68) Hole (70) Pivot (72) Hook

───────────────────────────────────────────────────── フロントページの続き (72)発明者 角道 将人 神奈川県横浜市西区北幸二丁目７番18号 株式会社岡村製作所内 Ｆターム(参考） 3B084 HA12 3B091 AA01 AA05 AB02 AD02  ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masato Kadomichi 2-7-18 Kitako, Nishi-ku, Yokohama-shi, Kanagawa F-term in Okamura Works (reference) 3B084 HA12 3B091 AA01 AA05 AB02 AD02

Claims (9)

【特許請求の範囲】[Claims] 【請求項１】 着座部の後部に背凭れフレームを立設
し、この背凭れフレームの上部と下部に、背凭れ板の上
部と下部を、左右方向の水平軸線まわりに回動可能に、
かつその上部と下部の少なくとも一方を、上下移動可能
に取り付け、前記背凭れ板の中間部が後方に押圧された
際に、くの字に屈撓するようにした椅子において、前記
背凭れフレームの下部と前記背凭れ板の下端部との間
に、前記背凭れ板の下端部の水平軸線まわりの回動を規
制する規制手段を設け、該規制手段により背凭れ板の屈
撓角度を調節するようにしたことを特徴とする椅子。1. A backrest frame is erected at a rear portion of a seating portion, and an upper portion and a lower portion of a backrest plate are rotatable around a horizontal axis in a left-right direction at an upper portion and a lower portion of the backrest frame.
At least one of the upper part and the lower part thereof is attached so as to be vertically movable, and when the intermediate portion of the backrest plate is pressed backward, the chair is bent in a square shape. A restricting means for restricting rotation of the lower end of the backrest plate about a horizontal axis is provided between the lower portion and the lower end of the backrest plate, and the bending angle of the backrest plate is adjusted by the restricting means. A chair characterized in that: 【請求項２】 背凭れ板の下部の背面に左右方向に延び
る水平軸を設け、該水平軸を、背凭れフレームの下部に
設けた水平軸受により支持した請求項１記載の椅子。2. The chair according to claim 1, wherein a horizontal shaft extending in the left-right direction is provided on a back surface of a lower portion of the backrest plate, and the horizontal shaft is supported by a horizontal bearing provided at a lower portion of the backrest frame. 【請求項３】 規制手段を、背凭れ板の下端とこれに対
向する背凭れフレームとの間に配設され、前記背凭れ板
の下端の前方への移動を調節可能に規制する規制手段と
した請求項１または２記載の椅子。3. A restricting means disposed between a lower end of the backrest plate and a backrest frame opposed thereto, the restricting means being adapted to restrict the forward movement of the lower end of the backrest plate so as to be adjustable. The chair according to claim 1 or 2, wherein 【請求項４】 規制手段を、背凭れ板と背凭れフレーム
のいずれか一方に固定された固定部材を有し、該固定部
材が、前記背凭れ板の回動の際、他方または他方に固定
された固定片に当接することにより、相対移動距離を調
節可能に規制するようにした規制手段とした請求項３記
載の椅子。4. A regulating means having a fixing member fixed to one of a backrest plate and a backrest frame, wherein the fixing member is fixed to the other or the other when the backrest plate rotates. 4. The chair according to claim 3, wherein the relative movement distance is regulated so as to be adjustable by contacting the fixed piece. 【請求項５】 規制手段を、背凭れ板と背凭れフレーム
の少なくとも一方に取り付けた帯状片と、該帯状片の前
後方向にへの移動限度を定めるストッパーとを備えるも
のとした請求項１〜４のいずれかに記載の椅子。5. The restricting means comprises a strip attached to at least one of the backrest plate and the backrest frame, and a stopper for setting a limit of movement of the strip in the front-rear direction. 4. The chair according to any one of 4. 【請求項６】 規制手段を、背凭れ板と背凭れフレーム
との双方に形成したフックに掛け渡された帯状の弾性材
料からなる輪を備えるものとした請求項１〜３のいずれ
かに記載の椅子。6. The device according to claim 1, wherein the restricting means comprises a ring made of a band-shaped elastic material which is hung over hooks formed on both the backrest plate and the backrest frame. Chair. 【請求項７】 規制手段を、背凭れ板の水平軸の下部に
設けた突起と、背凭れフレームの軸受に前記突起を収容
するように設けられ、その回動範囲を制限する円弧状の
溝とから構成した請求項２記載の椅子。7. A restricting means comprising: a projection provided below the horizontal axis of the backrest plate; and an arc-shaped groove provided to accommodate the projection in a bearing of the backrest frame, the rotation range being limited. The chair according to claim 2, comprising: 【請求項８】 円弧状の溝の内部に弾性材料を、少なく
とも部分的に充填した請求項７記載の椅子。8. The chair according to claim 7, wherein the arc-shaped groove is at least partially filled with an elastic material. 【請求項９】 規制手段を、背凭れ板の下端を後方に延
長し、この延長部分の前後方向に穿設した複数の孔と、
前記延長部分に対応して背凭れフレームに枢着され、前
記孔に選択的に係止されるフックとからなるものとした
請求項１記載の椅子。9. A restricting means comprising: a plurality of holes formed by extending a lower end of a backrest plate rearward;
The chair according to claim 1, further comprising a hook pivotally attached to the backrest frame corresponding to the extension portion and selectively hooked into the hole.
JP31619599A 1999-11-08 1999-11-08 Chair Expired - Fee Related JP4261001B2 (en)

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Publications (2)

Publication Number Publication Date
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JP4261001B2 JP4261001B2 (en) 2009-04-30

Family

ID=18074363

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002355141A (en) * 2001-05-31 2002-12-10 Itoki Crebio Corp Backrest for chair
JP2003010001A (en) * 2001-06-27 2003-01-14 Kokuyo Co Ltd Chair
JP2007130341A (en) * 2005-11-11 2007-05-31 Kokuyo Furniture Co Ltd Chair
JP2008302061A (en) * 2007-06-08 2008-12-18 Itoki Corp Chair
JP2012148100A (en) * 2007-01-29 2012-08-09 Herman Miller Inc Seating structure, and method for the use thereof
JP2013039396A (en) * 2012-10-16 2013-02-28 Itoki Corp Chair
CN104433507A (en) * 2014-12-22 2015-03-25 朱景超 Full-automatic child shortsightedness prevention chair
JP2016135411A (en) * 2011-07-15 2016-07-28 株式会社イトーキ Chair

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002355141A (en) * 2001-05-31 2002-12-10 Itoki Crebio Corp Backrest for chair
JP4534385B2 (en) * 2001-05-31 2010-09-01 株式会社イトーキ Chair backrest device
JP2003010001A (en) * 2001-06-27 2003-01-14 Kokuyo Co Ltd Chair
JP4626929B2 (en) * 2001-06-27 2011-02-09 コクヨ株式会社 Chair
JP2007130341A (en) * 2005-11-11 2007-05-31 Kokuyo Furniture Co Ltd Chair
JP4721182B2 (en) * 2005-11-11 2011-07-13 コクヨ株式会社 Chair
JP2012148100A (en) * 2007-01-29 2012-08-09 Herman Miller Inc Seating structure, and method for the use thereof
JP2008302061A (en) * 2007-06-08 2008-12-18 Itoki Corp Chair
JP2016135411A (en) * 2011-07-15 2016-07-28 株式会社イトーキ Chair
JP2013039396A (en) * 2012-10-16 2013-02-28 Itoki Corp Chair
CN104433507A (en) * 2014-12-22 2015-03-25 朱景超 Full-automatic child shortsightedness prevention chair

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