JP2001057917A - Seal sliding structure for office chairs - Google Patents

Seal sliding structure for office chairs

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Publication number
JP2001057917A
JP2001057917A JP11234218A JP23421899A JP2001057917A JP 2001057917 A JP2001057917 A JP 2001057917A JP 11234218 A JP11234218 A JP 11234218A JP 23421899 A JP23421899 A JP 23421899A JP 2001057917 A JP2001057917 A JP 2001057917A
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JP
Japan
Prior art keywords
seat
lever
back
frame
hooking
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.)
Pending
Application number
JP11234218A
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Japanese (ja)
Inventor
Atsuo Okamoto
本 安都夫 岡
Original Assignee
Uchida Yoko Co Ltd
株式会社内田洋行
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Application filed by Uchida Yoko Co Ltd, 株式会社内田洋行 filed Critical Uchida Yoko Co Ltd
Priority to JP11234218A priority Critical patent/JP2001057917A/en
Publication of JP2001057917A publication Critical patent/JP2001057917A/en
Application status is Pending legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To enable to ease longitudinal positioning for the seat of office chairs.
SOLUTION: An office chair has a receiving pedestal supported with legs, a back frame composing a backrest that leans backward freely and supported by this receiving pedestal, and a seat frame 4 that is supported by the receiving pedestal so that it can be moved back and forth within a prescribed distance responding to back-leaning motion of the back frame to compose the seat portion. Thus, a seat cover 37 forming the lower face of a seat cushion is attached to the seat frame 4 so that it can slide back and forth. Equipped on the lower face of the seat cover 37 are a hooking lever 40 pivoted around an axis at a position biased to the base end freely swingably up and down, an operation lever 44 whose tip end pivoted around an axis to the seat cover 37 is engaged to the base end of the hooking lever 40 freely swingably up and down, a hooking hole 47 that is linearly provided in the back and forth direction on the seat frame and selectively engaged by an hooking nail 42 formed on the lower face at the tip of the hooking lever 40, and an activating means 43 to activate the hooking lever 40 in the direction that the hooking nail engages with the hooking hole.
COPYRIGHT: (C)2001,JPO

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】本発明は事務用椅子に係り、 The present invention relates to relates to office chairs,
特に座部の前後方向の位置を使用者にとって最適な位置への調節操作を行ないやすくする事務用椅子の座部スライド構造に関する。 In particular to the seat slide structure of the office chair to easily perform an adjustment operation to the optimal position in the longitudinal direction of the position of the seat for the user.

【0002】 [0002]

【従来の技術】従来の事務用椅子では、背もたれに対し座部の前後位置を調節可能とされたものがある。 In conventional office chairs, there are those with adjustable longitudinal position of the seat relative to the backrest. 一般には、中間部が椅子本体側に軸着された操作レバーの内端を椅子本体側の係合部にバネ付勢により係合させるようにし、この操作レバーの外端の操作部を上方に引くことにより操作レバーの内端が前記係合部から外れ、座部の前後方向の位置が決まったとき操作レバーから手を放せばその位置で内端が係合部に係合してロックされるようになっている。 In general, so as to engage the spring loaded an inner end of the operating lever intermediate portion is pivotally attached to the chair body side engagement portion of the chair main body side, the operating portion of the outer end of the operating lever upward disengaged from the engaging portion inner end of the operating lever by pulling, the inner end is locked in engagement with the engagement portion at that position Release the hand from the operation lever when decided longitudinal position of the seat It has become so.

【0003】そのため上記操作レバーの操作部を前記内端が係合部に嵌脱させるだけのストロークにわたって大きく動かさなければならないことから、操作部を操作しやすくするため座部の前縁下に位置させると椅子に座る際に脚が当って邪魔になり、それ故一般には座部の側部下に操作部を位置させるようにしている。 [0003] Since therefore the inner end of the operating portion of the operating lever must be moved largely over only the stroke is Hamada' the engaging portion, located under the front edge of the seat to easily operate the operation section is to the get in the way hitting legs when sitting on a chair, the therefore generally so that to position the operating portion on the side subordinates of the seat.

【0004】 [0004]

【発明が解決しようとする課題】しかるに操作レバーの操作部を座部の側部に位置させると、座部を前後に動かして位置決めする際に横で操作レバーを引き上げながら座部を前後に動かすという不自然な操作が要求されることになり、座部の位置調節が煩らわしいという問題があった。 When is positioned on the side of the seat portion an operation unit However the operating lever [0005], moved back and forth a seat while pulling up on the horizontal in the operating lever in positioning by moving the seat back and forth will be an unnatural operation is requested that the position adjustment of the seat there is a problem that Hanrawashii.

【0005】本発明は、座部の前縁下部に操作レバーの操作部を位置させても座ったとき邪魔にならず、座部の位置調節をやりやすくすることを課題としてなされたものである。 [0005] The present invention is unobtrusive when sitting or to position the operating portion of the front edge lower to the operating lever of the seat has been made as an issue to be easier to position adjustment of the seat .

【0006】 [0006]

【課題を解決するための手段】上記課題を解決する手段として本発明は、脚に支持される受台と、この受台に枢支されて後傾動自在とされた背もたれを構成する背フレームと、前記受台に前記背フレームの後傾動に応動して所定距離前後移動可能に支持され座部を構成する座フレームとを有する事務用椅子において、前記座フレームに対し座クッションの下面を構成する座カバーを前後方向摺動可能に取付け、前記座カバーの下面に基端寄りの位置を軸により上下方向に揺動自在に枢支された係止レバーと、前記座カバーに軸により上下方向に揺動自在に枢支され先端が前記係止レバーの基端に係合された操作レバーと、前記座フレームに前後方向に列設され前記係止レバーの先端下面に形成された係止爪が選択的に係合する係止孔と、前記 Means for Solving the Problems The present invention as means for solving the above problems, a cradle supported by the legs, a back frame constituting a seat back that is freely rear tilting is pivotally supported on the cradles in office chairs having a seat frame constituting a supported seat to be movable a predetermined distance back and forth in response to tilting after the back frame to the cradle, constituting the lower surface of the seat cushion relative to the seat frame attaching a seat cover to be longitudinal direction sliding, a locking lever the lower surface position of the base end side of the said seat cover is swingably pivoted in the vertical direction by a shaft, in the vertical direction by a shaft to the seat cover and swingably pivoted to the operating lever tip is engaged with the proximal end of the locking lever, the locking pawl which is formed at the tip lower surface of the arrayed in the longitudinal direction of the seat frame said locking lever a locking hole to selectively engage the 止レバーをその係止爪が前記係止孔に係合する方向に付勢する付勢手段とを具有することを特徴とする。 The stop lever is the locking pawl, characterized in that androgynous and urging means for urging in a direction to engage with the locking hole.

【0007】こうしたことにより、座部の前後方向の位置を調整する際に操作レバーを若干引上げる方向に回動操作すれば、それに応じて係止レバーが揺動し、その係止爪が係止孔から外れるので座部を前後方向任意の位置にスライドさせることができ、位置が決まったとき操作レバーから手を放して座部を多少前後動させることにより係止爪の近隣に位置する係止孔に係止爪が付勢手段による付勢により係合し、座フレームに対し座カバーが固定される。 [0007] By these reasons, if the pivoted slightly pulling Ru direction the operating lever when adjusting the longitudinal position of the seat, the locking lever is swung accordingly, the locking pawl is engaged since out of the locking hole can slide the seat in the longitudinal direction an arbitrary position, it is located close to the engaging claw by slightly back and forth movement of the seat release the hand from the operation lever when the position has been determined engagement engaged by the biasing by the locking pawl biasing means locking hole, the seat cover is fixed to the seat frame. したがって背もたれの後傾動による座部の前後動には無関係に座部を執務に最適な位置に設定することができるとともに操作レバーと係止レバーとの2部材で構成したことによって操作レバーのストロークが小さくでき、操作部を座部の前縁下に位置させても座る際の邪魔になることがない。 Thus the stroke of the operating lever by constructed by two members of the operating lever and the locking lever together with the rearward movement of the seat by tilting after the backrest can be set to the optimum position in office regardless seat is small can, it does not interfere during sit be located under the front edge of the seat the operating unit.

【0008】 [0008]

【発明の実施の形態】以下、本発明を図面に示す実施の形態を参照して説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, will be explained with reference to the embodiments according to the present invention with reference to the drawings.

【0009】図1は本発明を適用する椅子1の一実施形態の外観を示し、図2は同一部の縦断面図を、図3は同水平断面図を示しており、図4は本発明の要部の平面図を、図5は同断面図を示している。 [0009] Figure 1 shows the external appearance of one embodiment of the chair 1 applying the present invention, a longitudinal sectional view of FIG. 2 is the same part, Figure 3 shows the same horizontal cross-sectional view, FIG. 4 is the invention of a plan view of a main portion, FIG. 5 shows a similar cross section.

【0010】上記椅子1は脚2に支持された受台3上に設けられる座フレーム4上に座クッション5が取付けられた座部6と、前記受台3に後傾自在に枢支された背フレーム7を有する背もたれ8と、前記座フレーム4の両側に取付けられた左右の肘掛け9とで構成され、前記脚2の上端内部には従来と同様に座部6の高さ調節用のガススプリング(図示せず)が内蔵されており、脚2の足10、10…の先端下面にはキャスタ11、11…が取付けられている。 [0010] The chair 1 comprises a seat 6 for the seat cushion 5 is mounted on the seat frame 4 provided on the cradle 3 which is supported by the legs 2, is Ko傾 freely pivoted to the cradle 3 a backrest 8 having a back frame 7, the seat frame is composed of left and right armrest 9 mounted on both sides of the 4, gas for height adjustment of the conventional as well as the seat 6 inside the upper end of the leg 2 spring (not shown) is built, casters 11, 11 ... is attached to the tip end lower surface of the foot 10, 10 ... leg 2.

【0011】前記背フレーム7は側面視略L形状を有し、その下部の前方に向けて延びる下部フレーム7aは長く形成されていて前記受台3の脚2に嵌合する脚受部3aと前記座部6の前端との間の略中間位置で下部フレーム7aの先端が受台3に軸12により上下方向回動自在に枢支されている。 [0011] The back frame 7 has a side substantially L-shaped, a leg receiving portion 3a to be fitted the lower frame 7a is be formed long leg 2 of the cradle 3 that extends forward of the lower portion the tip of the lower frame 7a at a substantially intermediate position is pivoted freely vertically pivoted by the shaft 12 to the cradle 3 between the front end of the seat portion 6.

【0012】前記受台3の前端左右部には後方に向け下り傾斜する長孔13、13を有するブラケット14が設けられ、これら長孔13、13には前記座フレーム4の前端近くの下部幅方向に固設された軸15が挿通されており、この軸15が長孔13の長さ分だけ後方に後退し得るようになっている。 [0012] The in front left and right portions of the cradle 3 bracket 14 having a long hole 13, 13 which is inclined down toward the rear is provided, the bottom width near the front end of the seat frame 4 in these elongated holes 13 and 13 It is inserted through the shaft 15 which is fixed in the direction, so that the shaft 15 can be retracted backward by the length of the elongated hole 13. この軸15と対応する受台3の前端部には、該軸15が前記長孔13の前端に当る前に当接して緩衝するゴムその他の弾性体からなる緩衝部材16が設けられている。 The front end of the cradle 3 corresponding to that axis 15, cushioning member 16 made of rubber or other elastic body shaft 15 is buffered in contact before hitting the front end of the long hole 13 is provided.

【0013】前記背フレーム7を枢支する軸12には左右一対のコイルバネ17、17が巻装され、これらコイルバネ17、17の一端17a、17aは背フレーム7 [0013] The pair of left and right coil springs 17, 17 are wound around the back frame 7 to the shaft 12 pivotally supporting one end 17a of the coil springs 17, 17, 17a is a back frame 7
の左右の下部フレーム7a、7a間に掛け渡して固定されたバネ受18の下面に係止され、他端17b、17b The left and right lower frames 7a, is engaged with the lower surface of the spring receiver 18 fixed spanned between 7a, the other end 17b, 17b
は前記受台3の前部下面に螺挿された調整ネジ19の回動により上下方向に移動するバネ受20の下面に係止され、背もたれ8の後傾時には前記コイルバネ17、17 Is the engaged with the lower surface of the spring receiver 20 to move in the vertical direction by the rotation of the adjusting screw 19 screwed to the front lower surface of the pedestal 3, wherein the 傾時 after the backrest 8 coil springs 17 and 17
が巻締められることによる反力を得るようになっており、前記調整ネジ19を回動して前記バネ受20を移動させることにより上記反力の強さが調整されるようになっている。 There are adapted to obtain a reaction force due to be seamed, so that the strength of the reaction force is adjusted by moving the spring receiver 20 by rotating the adjusting screw 19.

【0014】前記座部6に腰掛けた際の股関節が位置する部位、具体的には座フレーム4の前後方向略中央部に軸21が座フレーム4の幅方向に挿通支持され、この軸21に前記背フレーム7の下部フレーム7a上に突設された軸受部22が挿通されていて背フレーム7と座フレーム4とが連結されている。 [0014] sites hips when sitting on the seat portion 6 is positioned, in particular the shaft 21 in the front-rear direction substantially central portion of the seat frame 4 is inserted and supported in the width direction of the seat frame 4, this axis 21 a bearing portion 22 which projects on the lower frame 7a is being inserted and the back frame 7 and the seat frame 4 is connected to the back frame 7.

【0015】前記受台3の幅方向中央位置には複数枚のカムプレート23、23…の基部が前記受台3に設けられた軸受24、24間に軸25により傾動自在に枢支されている。 [0015] is pivotally supported tiltably by a shaft 25 between the bearings 24 and 24 in the widthwise center position of the cradle 3 which is a plurality of cam plates 23, 23 ... base of provided on the cradle 3 there.

【0016】このカムプレート23、23…は摩擦板を兼ねるもので、少なくとも表面が摩擦係数の大きい材料で構成され、先端側には前記軸25より最も離間した位置から接近する位置にかけて円弧状に穿設されたカム孔26を有し、このカム孔26に前記軸21が可及的密に挿通されている。 [0016] The present cam plate 23 ... is also serving as a friction plate, at least the surface is made of a material having large friction coefficient, the front end side in an arc shape toward a position approaching from farthest position from the shaft 25 has a cam hole 26 drilled, the shaft 21 is as much as possible tightly inserted through the cam hole 26.

【0017】前記軸21には図6に示すように前記カムプレート23、23…の各間に介在するワッシャ27、 The washer 27 interposed between the cam plates 23, 23 ... each of 6 to the shaft 21,
27…が嵌挿されており、最も外端のワッシャ18、1 27 ... have been fitted, the most outer end washer 18, 1
8と背フレーム7の下部フレーム7aとの間の軸21にはパイプ材からなる固定用部材28、29が外嵌されている。 8 and the shaft 21 between the lower frame 7a of the back frame 7 is fitted fixing members 28 and 29 made of a pipe material. このうち一方の固定用部材29は下部フレーム7 The fixing member 29 of these one is the lower frame 7
a、座フレーム4を貫通して座フレーム4外に延びており、前記軸21の外端に固着のエンド部材30が固定用部材29の外端のフランジ部29aの外面に当接されている。 a, through the seat frame 4 extends outside the seat frame 4, the end member 30 of the fastening to the outer end of the shaft 21 is in contact with the outer surface of the flange portion 29a of the outer end of the fixing member 29 .

【0018】前記軸21の一端のバネ受31と座フレーム4との間には付勢手段を構成する圧縮バネ32が介装されていて軸21を常時図6において左方に牽引する方向に付勢しており、このバネ付勢力により前記エンド部材21aが固定用部材29のフランジ部29aを押し、 [0018] in the direction of pulling to the left in constantly 6 the shaft 21 compressing spring 32 constituting the urging means have been interposed between the spring receiver 31 and the seat frame 4 of one end of the shaft 21 has energized, said end member 21a pushes the flange portion 29a of the fixing member 29 by biasing force this spring,
前記カムプレート23、23…とワッシャ27、27… The cam plate 23, 23 ... and the washer 27, 27 ...
群が前記固定用部材28の端面に強く押付けられてカムプレート23、23…とワッシャ27、27…とが圧着状態となり、これにより受台3に対し座フレーム4および背フレーム7が固定された状態を保つように構成されている。 Group said pressed strongly to the end surface of the fixing member 28 by the cam plate 23 ... and the washer 27, 27 ... and become crimped state, the seat frame 4 and the back frame 7 is fixed to thereby cradle 3 It is configured to maintain the state.

【0019】前記軸21の反対端には、前記固定状態を解放するための固定解除機構33が設けられている。 [0019] opposite end of the shaft 21, unlocking mechanism 33 for releasing the fixed state is provided. この固定解除機構33は、前記軸21の端部に同心的に固着される円環状の回動カム34(図7(A)、(B) The unlocking mechanism 33, the shaft 21 of the end annular rotating cam 34 is concentrically fixed to (FIG. 7 (A), (B)
示)と、座フレーム4に固定される固定カム35(図8 And shown), fixed cam 35 fixed to the seat frame 4 (FIG. 8
(A)、(B)示)と、前記回動カム34の一側の軸受部37aに挿着されるハンドルレバー37とで構成されている。 (A), it is composed of a handle lever 37 to be inserted into (B) shown) and one side of the bearing portion 37a of the rotating cam 34.

【0020】前記回動カム34および固定カム35は、 [0020] The rotating cam 34 and fixed cam 35,
図7、図8に示すようにその合わせ面の周方向に複数のカムが形成されたもので、そのカム形状は図9(A)に固定カム35の、同(B)に回動カム34の展開図を示すように、複数の高所35a、34aとこれと嵌合する低所35b、34bとが形成されていて、回動カム34 7, in which a plurality of cams in the circumferential direction of the mating surfaces as shown in FIG. 8 is formed, the cam shape of the fixed cam 35 in FIG. 9 (A), rotating cam 34 in the (B) of to indicate developed view, a plurality of heights 35a, 34a and which mates to depressed portion 35b, have 34b and is formed, rotating cam 34
の回動時に接する側が傾斜面と35c、34cとされ、 Side contact at the time of rotation is an inclined surface and 35c, 34c of,
反対側は垂直な面とされている。 Opposite side is a vertical surface.

【0021】前記回動カム34の高所34aの範囲には凹部34dが、固定カム35の高所35aの範囲には前記凹部34dに密嵌する凸部35dが形成されており、 [0021] The range in the recess 34d is of altitude 34a of the rotating cam 34, the range of heights 35a of the fixed cam 35 is formed a convex portion 35d which closely fitted in the recess 34d is
固定カム35の高所35aに回動カム34の高所34a Altitude 34a of the rotating cam 34 to altitude 35a of the fixed cam 35
が乗り上げたとき図10(A)のように凸部35dと凹部34dとが係合して停止位置を保つようになっている。 The convex portion 35d and the concave portion 34d is adapted to engage keep stopping position, such as when the rides FIG 10 (A). なお前記凸部35dは凹部34dへの嵌脱をスムーズにするためテーパー35eが付されている。 Note the convex portion 35d is tapered 35e are attached to smooth the Hamada' to recess 34d.

【0022】そして前記回動カム34の高所34aが固定カム35の低所35bに嵌合しているとき(図10 [0022] And when altitude 34a of the rotating cam 34 is fitted to the low-income 35b of fixed cam 35 (FIG. 10
(B)示)には、軸21がバネ32により図4において左方に引かれるのでそのエンド部材21aが固定用部材29のフランジ部29aに当ってこれを押し、前述のようにその内端が外端に位置するワッシャ27を押してカムプレート23、23…を圧接固定状態(背フレームロック)とし、回動カム34を回動してその高所34aが固定用カム35の高所35aに乗り上げると回動カム3 (B) The shown), since the shaft 21 is pulled leftward in FIG. 4 by a spring 32 pressing it the end member 21a is hitting the flange portion 29a of the fixing member 29, the inner end, as described above There is a pressure fixing state of the cam plate 23 ... (back frame locked) by pressing the washer 27 located at the outer end, the heights 34a rotates the rotating cam 34 in the high place 35a of the fixed cam 35 rides and rotating cam 3
4が固定用部材29のフランジ部29aを介して押し戻し、固定用部材29によるカムプレート23、23…の圧接が解かれ、背フレーム7のロックが解かれるようになっている。 4 is pushed back through the flange portion 29a of the fixing member 29, the cam plate 23, 23 ... pressure of is solved by the fixing member 29, so that the locking of the back frame 7 is released.

【0023】前記座フレーム4の左右部には図5に示すように外方へ向けて水平方向に屈曲させた突片36、3 The protrusion on the left and right portions of the seat frame 4 is bent in the horizontal direction toward the outside as shown in FIG. 5 36, 3
6が形成されており、これら突片は前記座部6の座クッション5の下面を支持する座カバー37の左右両側に形成された断面コ字状をなすスライドレール38、38に摺動自在に嵌挿されていて、座フレーム4に対し座クッション5部分が前後方向にスライドすることができるようになっている。 6 are formed, these protruding pieces are slidably slide rails 38, 38 forming a U-shaped section formed in the left and right sides of the seat cover 37 to support the lower surface of the seat cushion 5 of the seat 6 It has been fitted inserted, the seat cushion 5 parts and is capable of sliding back and forth direction with respect to the seat frame 4.

【0024】前記座カバー37の幅方向略中央位置には係止レバー40の基端40a寄りの位置が椅子1の前後方向に軸線を有する軸41により上下方向揺動自在に枢支され、この係止レバー40の先端側の下面には係止爪42が突設されており、付勢手段としてのバネ43により前記係止爪42が下降する方向に付勢されている。 The position of the base end 40a side of the locking lever 40 is pivotally supported to freely vertically swung by a shaft 41 having an axis in the longitudinal direction of the chair 1 in the width direction substantially central position of the seat cover 37, the the lower surface of the distal end side of the locking lever 40 locking claw 42 is projected, the locking claw 42 is urged in the direction of downward by a spring 43 as an urging means.

【0025】また前記座カバー37の下面には図4にみられるように平面視クランク状をなす操作レバー44の前記軸41と平行な中間部を軸45として上下方向に揺動自在に枢支され、その内端は前記係止レバー40の基部40aの上面に係合され、他端は座カバー37の一側端近くまで延びていて操作部46が設けられている。 Further swingably pivoted in the vertical direction as the axis 45 parallel to the intermediate portion and the shaft 41 of the operating lever 44 underside the forming the plan view crank shape as seen in Figure 4 of the seat cover 37 is, the inner end engaged with the upper surface of the base portion 40a of the locking lever 40, the other end operating portion 46 extend to near one end of the seat cover 37 is provided.

【0026】一方、前記座フレーム4側には、前記係止レバー40の係止爪42が係合し得る複数個(図では8 On the other hand, to the seat frame 4 side, a plurality (Fig locking claws 42 can engage the locking lever 40 is 8
個)の係止孔47、47…が椅子1の前後方向に一定の間隔をおいて列設され、係止爪42が前記バネ43の付勢によりそのいずれか一つに係合することができるようになっている。 Locking holes 47, 47 ... of the individual) are columns set at regular intervals in the longitudinal direction of the chair 1, that the locking claw 42 is engaged with one of them or by the urging of the spring 43 It has become possible way.

【0027】次に作用を説明する。 [0027] Next, a description will be given of the operation.

【0028】通常の使用時には、固定解除機構33のハンドルレバーを上方位置に操作すると回動カム34が図10(A)の矢印方向に回動してその高所34aが固定カム35の高所35aに乗り上げるので、この回動カム34が固定用部材29のフランジ部29を介してエンド部材21aを押し、図6(A)のように軸21がカムの高さだけバネ32の付勢に抗して引かれ、これによりカムプレート23群の固定用部材28による押し付けが解かれるのでカムプレート23、23…とワッシャ27、 [0028] During normal use, the heights 34a rotates in the arrow direction altitude fixed cam 35 by operating the handle lever unlocking mechanism 33 in the upper position turning the cam 34 in FIG. 10 (A) since rides 35a, pressing through the flange portion 29 end member 21a of the rotating cam 34 is fixed member 29, to the shaft 21 is bias of the spring 32 by the height of the cam shown in FIG. 6 (a) drawn by anti since thereby pressing by the fixing member 28 of the cam plate 23 group is released cam plate 23 ... and the washer 27,
27…との圧着状態が解かれ、背もたれ8を使用者のとりたい姿勢に応じて後傾させることができる。 27 ... and the crimping state is released, and can be tilted backward in response to the take you want the attitude of the backrest 8 user.

【0029】このとき背フレーム7は前記軸15と21 The back frame 7 at this time is with the shaft 15 21
との略中間に位置する軸21を中心として背フレーム全体が大きく傾動する。 Whole back frame about a substantially axis 21 located intermediate the greatly tilted. その際の反力はコイルバネ17、 Reaction force at that time coil spring 17,
17の巻締めにより得られ、これらが相俟って背もたれ8をゆったりと柔らかく後傾させることができる。 Obtained by 17 seaming the can they be tilted backward leisurely soft backrest 8 I phase 俟.

【0030】また、作業内容や使用者の好みによってリクライニングを任意の角度で固定したい場合には、背フレーム7の背もたれ8の後傾角度を所望の角度に選定した後に、固定解除機構33のハンドレバーを下方位置に操作すると、バネ33の付勢により回動カム34の高所34aが図10(B)のように固定カム35の低所35 [0030] In addition, if you want to fix the reclining at any angle by the work content and user preferences, after the reclining angle of the backrest 8 of the back frame 7 selected to the desired angle, the hand of the unlocking mechanism 33 operating the lever to the lower position, the low of a fixed cam 35 as the biasing altitude 34a of the rotating cam 34 is shown in FIG. 10 (B) of the spring 33 35
bへ滑り込んで落ち、これに伴ない軸21のエンド部材21aが固定用部材29のフランジ部29aを押すことにより図6(A)のようにこの固定用部材29でカムプレート23とワッシャ27とを圧着し、受台31に対して座フレーム4および背フレーム7が固定された状態、 Fell slipped into b, the end member 21a of the companion no shaft 21 to which the cam plate 23 and the washer 27 in the fixing member 29 as shown in FIG. 6 (A) by pressing the flange portion 29a of the fixing member 29 crimp the, seat frame 4 and the back frame 7 with respect to the pedestal 31 is fixed state,
すなわち選定位置でのリクライニング姿勢が保たれる。 That reclining posture at the selection position is maintained.

【0031】上記リクライニング姿勢を解除すべく前述のようにハンドル操作によって固定解除機構33を解除させるとコイルバネ17、17の作用で背フレーム7が起立方向に回動し、それに伴なって座フレーム4が急激に前進復帰するが、そのときは前端の軸15が受台3に設けられている緩衝部材16に当接して座部6のショックが緩和される。 The back frame 7 by the action of the to release the unlocking mechanism 33 by the handle operation as described above in order to release the reclining posture coil spring 17, 17 is rotated in the standing direction, it seat frame 4 is accompanied Although rapidly advancing return, then the axis 15 of the front end shock seat 6 in contact with the cushioning member 16 provided on the cradle 3 is relaxed.

【0032】座る人の体型により座部6の位置を前後に調節したいときは、座カバー37の下面に位置する操作レバー44の操作部46に手を掛けて若干上方に引上げれば、操作レバー46の揺動により係止レバー40が軸41を中心に図5において反時計方向に回動し、その係止爪42が係止孔47から外れ出る。 [0032] By sitting human type To adjust the longitudinal position of the seat 6, if Re pulled slightly upwards over the hand on the operating portion 46 of the operation lever 44 positioned on the lower surface of the seat cover 37, the operating lever locking lever 40 is rotated in the counterclockwise direction in FIG. 5 about the shaft 41 by oscillation of 46, the engaging claw 42 comes off the retaining hole 47.

【0033】その後座クッション5部分を前または後にスライドさせれば座カバー37の突片36、36が座フレーム4のスライドレール38、38にそって前後にスライドし、最適な位置になったとき操作レバー44の操作部46から手を放せば係止レバー40はバネ43の付勢によりその係止爪42が係止孔47の一つに嵌合して座カバー37(座部6)が固定される。 [0033] When the projecting pieces 36, 36 of the subsequent seat cushion 5 seat cover 37 is slid portions before or after slides back and forth along the slide rail 38, 38 of the seat frame 4, becomes optimum position locking lever 40 Release the hand from the operation unit 46 of the operation lever 44 is a seat cover 37 that engagement claw 42 by the bias of the spring 43 is fitted into one of the locking holes 47 (the seat 6) It is fixed.

【0034】以後上記の状態で椅子1に腰掛けることができ、リクライニングについても前述の作用をそのまま奏することができる。 [0034] Thereafter it is possible to sit on a chair 1 in the above state, it is possible to also achieve as an effect of the above for reclining.

【0035】なお上記実施形態では、座フレーム4側に突片36、36を、座カバー37側にスライドレール3 It should be noted in the above embodiment, the projecting pieces 36, 36 to the seat frame 4 side, the slide rail 3 on the seat cover 37 side
8、38を設けた場合について示したが、これらは逆の関係としてもよいことはもちろんである。 Shows the case of providing the 8, 38, but they are of course also it may be a reverse relationship. また上記スライドレール38、38は滑りをよくするため、樹脂により形成することが好ましい。 Also the slide rail 38, 38 for better sliding, it is preferable to form a resin.

【0036】さらに係止レバー40の軸41の位置、操作レバー44の軸45の位置を図示実施形態のようなレバー比をもって構成すれば、操作レバー44を僅かに引上げることにより係止爪42の係脱をなさしめることができるので好ましい。 Furthermore the position of the axis 41 of the locking lever 40, when configured with a lever ratio as the illustrated embodiment the position of the shaft 45 of the operating lever 44, the engaging claw by Ru slightly pulling the operation lever 44 42 It preferred because it can occupy made of disengagement.

【0037】 [0037]

【発明の効果】以上説明したように本発明によれば、リクライニング時における座部の前後動とは別に座フレームに対し座クッション部分の前後方向の位置を調整することができるので、使用者の体型や好みに合う形態の事務用椅子とすることができ、執務を楽な姿勢で行なうことができる。 According to the present invention described above, according to the present invention, it is possible to adjust the longitudinal position of the seat cushion portion to separate from the seat frame and rearward movement of the seat portion during recline, the user can be an office chair in a form fit to the body type and preferences, it is possible to carry out the office in a comfortable position.

【0038】また座クッション部分の前後方向位置の調整には、座カバーの前部一側下面に位置する操作レバーの操作部を僅かに引上げるだけで所望の位置に変更することができ、操作部から手を放せばその位置で係止レバーの係止爪が座フレーム側の係止孔の一つに係合して不動状態に固定されるので調整操作の煩わしさを解消することができる。 Further adjustment of the longitudinal position of the seat cushion part may change the operating portion of the operating lever located on the front one side the lower surface of the seat cover in the desired position by simply Ru slightly pulling operation since Release the hand from part engaging pawl of the locking lever in its position is fixed in immobile state engages in one of the locking holes of the seat frame side can be eliminated troublesome adjustment operation .

【0039】さらに係止レバーおよび操作レバーの2つのレバーの組合わせで構成されているので、各レバーのレバー比を選択することにより小さいストロークで係止爪の係脱を行なえるようにでき、そのため操作レバーの操作部を座部の前縁下に位置させても下方に大きく突出することがなく、座った際に邪魔にならず、座部の位置調節操作をしやすくすることができる利点がある。 [0039] which is configured further in combination of two levers of the locking lever and the operating lever can disengagement claws for performed with a small stroke by selecting the lever ratio of each lever, the advantage of the operation unit of the for the operating lever without having to greatly protrude downward be located under the front edge of the seat, unobtrusive when sitting, it is possible to easily position adjusting operation of the seat there is.

【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の一実施形態を示す側面図。 Side view showing one embodiment of a chair applying the invention; FIG.

【図2】同、要部の縦断側面図。 FIG. 2 is the same, vertical cross-sectional side view of a main part.

【図3】同、水平断面図。 [3] the horizontal cross section.

【図4】本発明の要部を示す平面図。 Plan view showing an essential part of the present invention; FIG.

【図5】同、断面図。 FIG. 5 is the same, cross-sectional view.

【図6】図2、図3におけるリクライニング部を示し、 [6] FIG. 2 shows a reclining portion in FIG. 3,
(A)はリクライニング固定状態時、(B)は解放状態時を示す断面図。 (A) when reclined fixed state, (B) is a sectional view showing a time released.

【図7】固定解除機構の回動カムを示し、(A)は正面図、(B)は一部を断面として平面図。 7 shows the rotating cam of the unlocking mechanism, (A) is a front view, (B) is a plan view partially in section.

【図8】同、固定カムを示し、(A)は正面図、(B) [8] the, shows the fixed cam, (A) is a front view, (B)
は平面図。 Plan view.

【図9】(A)は固定カム、(B)回動カムの各展開図。 9 (A) is fixed cam, (B) each development view of a rotating cam.

【図10】(A)は固定カムと回動カムとの非係合時、 [10] (A) when disengagement between the fixed cam and the rotating cam,
(B)は係合時を示す展開図。 (B) is a developed view showing a time engagement.

【符号の説明】 DESCRIPTION OF SYMBOLS

2 脚 3 受台 4 座フレーム 6 座部 7 背フレーム 8 背もたれ 13 長孔 16 緩衝部材 17 コイルバネ 19 調整ネジ 23 カムプレート 26 カム孔 27 ワッシャ 28、29 固定用部材 33 固定解除機構 34 回動カム 35 固定カム 36 突片 37 座カバー 38 スライドレール 40 係止レバー 42 係止爪 43 付勢手段としてのバネ 44 操作レバー 2 leg 3 cradle tetradentate frame 6 seat 7 back frame 8 backrest 13 slot 16 buffer member 17 coil spring 19 adjusting screw 23 cam plate 26 cam hole 27 washer 29 fixing member 33 fixed release mechanism 34 rotates the cam 35 fixed cam 36 protruding piece 37 seat cover 38 slide rail 40 engaging lever 42 spring 44 operating lever as the locking claw 43 biasing means

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】脚に支持される受台と、この受台に枢支されて後傾動自在とされた背もたれを構成する背フレームと、前記受台に前記背フレームの後傾動に応動して所定距離前後移動可能に支持され座部を構成する座フレームとを有する事務用椅子において、前記座フレームに対し座クッションの下面を構成する座カバーを前後方向摺動可能に取付け、前記座カバーの下面に基端寄りの位置を軸により上下方向に揺動自在に枢支された係止レバーと、前記座カバーに軸により上下方向に揺動自在に枢支され先端が前記係止レバーの基端に係合された操作レバーと、前記座フレームに前後方向に列設され前記係止レバーの先端下面に形成された係止爪が選択的に係合する係止孔と、前記係止レバーをその係止爪が前記係止孔に係合する方向に付勢 And 1. A cradle that is supported by the legs, a back frame constituting a seat back that is freely rear tilting is pivotally supported on the cradle, in response to tilting after the back frame to the cradle in office chairs having a seat frame constituting a predetermined distance before and after movably supported seat, a seat cover that constitutes the lower surface of the seat cushion relative to the seat frame front and rear mounted for direction sliding of the seat cover a locking lever that is pivotally pivoted in the vertical direction by the axial position of the base end-sided to the lower surface, the tip is pivotally supported swingably in the vertical direction by a shaft to the seat cover groups of said locking lever engaged with the operation lever to an end, and locking holes which tip lower surface which is formed on the locking pawl is arrayed in the longitudinal direction to the seat frame said locking lever for selectively engaging said locking lever urging the direction in which the locking pawl is engaged with the locking hole る付勢手段とを具有することを特徴とする事務用椅子の座部スライド構造。 Seat slide structure of the office chairs, characterized by androgynous and biasing means that.
JP11234218A 1999-08-20 1999-08-20 Seal sliding structure for office chairs Pending JP2001057917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11234218A JP2001057917A (en) 1999-08-20 1999-08-20 Seal sliding structure for office chairs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11234218A JP2001057917A (en) 1999-08-20 1999-08-20 Seal sliding structure for office chairs

Publications (1)

Publication Number Publication Date
JP2001057917A true JP2001057917A (en) 2001-03-06

Family

ID=16967560

Family Applications (1)

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JP11234218A Pending JP2001057917A (en) 1999-08-20 1999-08-20 Seal sliding structure for office chairs

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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007282892A (en) * 2006-04-18 2007-11-01 Okamura Corp Chair
JP2010099489A (en) * 2009-12-24 2010-05-06 Kokuyo Co Ltd Chair
JP2014514952A (en) * 2011-05-18 2014-06-26 ソク キム,ムン Its own weight towing chair

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0249628U (en) * 1988-09-30 1990-04-06
JPH0288837U (en) * 1988-12-27 1990-07-13
WO1999021456A1 (en) * 1997-10-24 1999-05-06 Steelcase Inc. Synchrotilt chair with adjustable seat, back and energy mechanism
JPH11180193A (en) * 1997-12-24 1999-07-06 Shiroki Corp Seat track

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0249628U (en) * 1988-09-30 1990-04-06
JPH0288837U (en) * 1988-12-27 1990-07-13
WO1999021456A1 (en) * 1997-10-24 1999-05-06 Steelcase Inc. Synchrotilt chair with adjustable seat, back and energy mechanism
JP2001522618A (en) * 1997-10-24 2001-11-20 スティールケイス・インコーポレイテッド Adjustable seat, synchronous tilting chair provided with a backrest and energy mechanism
JPH11180193A (en) * 1997-12-24 1999-07-06 Shiroki Corp Seat track

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007282892A (en) * 2006-04-18 2007-11-01 Okamura Corp Chair
JP2010099489A (en) * 2009-12-24 2010-05-06 Kokuyo Co Ltd Chair
JP2014514952A (en) * 2011-05-18 2014-06-26 ソク キム,ムン Its own weight towing chair

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