JP2003245155A - Reclining seat - Google Patents

Reclining seat

Info

Publication number
JP2003245155A
JP2003245155A JP2002047403A JP2002047403A JP2003245155A JP 2003245155 A JP2003245155 A JP 2003245155A JP 2002047403 A JP2002047403 A JP 2002047403A JP 2002047403 A JP2002047403 A JP 2002047403A JP 2003245155 A JP2003245155 A JP 2003245155A
Authority
JP
Japan
Prior art keywords
slider
support base
spring
seat frame
coil spring
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
JP2002047403A
Other languages
Japanese (ja)
Other versions
JP3974425B2 (en
Inventor
Nobuaki Nasu
信昭 那須
Akira Kiyohisa
彰 清久
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 JP2002047403A priority Critical patent/JP3974425B2/en
Publication of JP2003245155A publication Critical patent/JP2003245155A/en
Application granted granted Critical
Publication of JP3974425B2 publication Critical patent/JP3974425B2/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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • 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
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To improve operability of the handle for adjusting the strength at the time of tilting backward the backrest. <P>SOLUTION: The reclining seat is equipped between the support base at the upper part of the leg and the seat frame with a strength adjusting means for adjusting the strength of the resisting force at the time of backward tilting of the seat-back frame. The strength adjusting means 31 comprises a compression coil spring 34 which is set in the forward and backward direction and the front end of which is capable of energizing forward by abutting with the front end of the seat frame 12, a spring holder 33 that holds the rear end of the compression coil spring 34 and makes the compression coil spring 34 expand by moving in the forward and backward direction, a slider 35 which is held by the above support base at the back of the spring holder 33 movably in the right and left direction and of which the front face sliding with the back face of the spring holder 33 makes a slanted cam face 44 that acts so as to push forward the spring holder 33 at the time of movement to either the right or left, and an operating rod 37 which is supported by the above support base capable of rotating in the right and left direction and is capable of moving the slider 35 in the right and left direction by screwing the male screw at the top end into the square nut 48 of the slider 35, and has an operating handle 36 at the side end. <P>COPYRIGHT: (C)2003,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、背もたれを後方へ
傾動させるのと連動して、座体の後部が下傾するように
したリクライニング椅子に係り、特に、背もたれを後傾
させる際の抵抗力の強さを調節可能な調節手段を備える
リクライニング椅子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reclining chair in which a rear part of a seat is tilted downward in conjunction with tilting a backrest rearward, and particularly to a resistance force when tilting the backrest backward. The present invention relates to a reclining chair provided with an adjusting means capable of adjusting the strength of a chair.

【０００２】[0002]

【従来の技術】上記のように、背もたれを後傾させる際
の抵抗力（付勢力）の強さを調節可能な調整手段を備え
る従来のリクライニング椅子としては、例えば、実開昭
６４−３２６５８号公報や特開平８−２６６３６４号公
報等に開示されているものがある。2. Description of the Related Art As a conventional reclining chair provided with an adjusting means capable of adjusting the strength of the resistance force (biasing force) when the backrest is tilted backward, for example, Japanese Utility Model Laid-Open No. 64-32658. There are some disclosed in Japanese Patent Laid-Open No. 8-266364 and the like.

【０００３】[0003]

【発明が解決しようとする課題】上記従来のリクライニ
ング椅子において、背もたれを後傾させる際の抵抗力の
調節は、座フレームの下方に設けた圧縮コイルばねの伸
縮量を、くさび状の押圧部材の前後移動により調整し、
その付勢力を変えることにより、行いうるようになって
いる。In the conventional reclining chair described above, the resistance force when the backrest is tilted backward is adjusted by adjusting the amount of expansion and contraction of the compression coil spring provided below the seat frame by the wedge-shaped pressing member. Adjust by moving back and forth,
It can be done by changing its urging force.

【０００４】しかし、上記従来のリクライニング椅子
は、いずれも、くさび状の押圧部材を前後に移動させる
ねじ杆が上下方向を向いており、しかも、それに取付け
た操作把手が、座体の下方に位置しているため、操作把
手を回動させる際の操作性が悪く、着座姿勢のままで回
動させるには難がある。However, in each of the conventional reclining chairs described above, the screw rod for moving the wedge-shaped pressing member back and forth is oriented in the vertical direction, and the operation handle attached to the screw rod is located below the seat body. Therefore, the operability at the time of rotating the operating handle is poor, and it is difficult to rotate the operating handle in the sitting posture.

【０００５】本発明は、上記問題点に鑑みてなされたも
ので、背もたれを後傾させる際の強さを調節する把手の
操作性を向上させ、着座姿勢のままでも容易に回動させ
うるようにしたリクライニング椅子を提供することを目
的としている。The present invention has been made in view of the above problems, and improves the operability of the handle for adjusting the strength when the backrest is tilted backward, so that the handle can be easily rotated even in the sitting posture. The purpose is to provide a reclining chair.

【０００６】[0006]

【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）背もたれを備える側面視前向Ｌ字状をなす背フレ
ームの前端下部を、脚体上部の支基に枢着するととも
に、座フレームの前部を、前記支基の前端部に前後に移
動可能に枢支し、同じく、座フレームの後部を、前記背
フレームの前端部に枢着することにより、背フレームの
後傾と連動して、座フレームの後部が下傾するようにし
てなり、かつ前記支基と座フレームとの間に、前記背フ
レーム後傾時の抵抗力の強さを調整しうる強弱調整手段
を設けてなるリクライニング椅子において、前記強弱調
整手段が、前後方向を向き、前端が前記座フレームの前
端部に当接することにより、これを前方に付勢可能な圧
縮コイルばねと、該圧縮コイルばねの後端を保持し、か
つ前後方向に移動可能として圧縮コイルばねを伸縮させ
るばね受けと、該ばね受けの後方において前記支基に左
右方向に移動可能に保持され、かつばね受けの後面と摺
動する前面が、左右いずれか一方への移動時にばね受け
を前方に押動するように作用する傾斜カム面をなすスラ
イダと、前記支基に左右方向に向けて回動可能に支持さ
れ、かつ先端部のおねじを前記スライダに形成しためね
じ孔に螺合することにより、該スライダを左右方向に移
動させうる、側端に操作把手を取付けてなる操作ロッド
とを備えるものとする。According to the present invention, the above problems can be solved as follows. (1) The lower front end of the L-shaped back frame having a backrest in a side view is pivotally attached to the support base of the upper leg body, and the front portion of the seat frame is moved forward and backward to the front end of the support base. Similarly, the rear portion of the seat frame is pivotally attached to the front end of the back frame so that the rear portion of the seat frame tilts downward in conjunction with the rear tilt of the back frame. Further, in a reclining chair having strength adjusting means for adjusting the strength of the resistance force when the back frame is tilted backward, between the support base and the seat frame, in the reclining chair, the strength adjusting means faces the front-back direction. , A front end of the compression coil spring is urged forward by contacting the front end of the seat frame, and a compression coil spring that holds the rear end of the compression coil spring and is movable in the front-rear direction. A spring support that expands and contracts, and An inclination in which a front surface that is movably held in the left-right direction on the support base behind the receiver and that slides with the rear surface of the spring receiver acts to push the spring receiver forward when moving to the left or right. A slider that forms a cam surface and is rotatably supported by the support base in the left-right direction, and is screwed into a screw hole to form an external thread at the tip of the slider, thereby moving the slider in the left-right direction. And an operation rod having an operation handle attached to a side end thereof, which can be moved to the position.

【０００７】（２）上記(１)項において、座フレームの
前端部における支基への枢支部を、左右方向を向く軸状
とし、その軸状部に後方より回動可能に嵌合したばね受
けの後端部により、圧縮コイルばねの前端を保持する。(2) In the above item (1), the pivotal support portion to the support base at the front end portion of the seat frame is a shaft oriented in the left-right direction, and a spring fitted to the shaft-shaped portion so as to be rotatable from the rear side. The rear end of the receiver holds the front end of the compression coil spring.

【０００８】（３）上記(１)または(２)項において、後
部側のばね受けの後面に、スライダが左右方向に摺動可
能に嵌合する凹溝を設け、かつ該凹溝におけるスライダ
の傾斜カム面と対向する奥面を、該傾斜カム面と同方向
を向く傾斜面として、それらを摺動可能に摺接させる。(3) In the above item (1) or (2), a recessed groove into which the slider is slidably fitted in the left and right direction is provided on the rear surface of the rear side spring bearing, and the slider is provided in the recessed groove. An inner surface facing the inclined cam surface is an inclined surface facing the same direction as the inclined cam surface, and they are slidably slidably contacted.

【０００９】[0009]

【発明の実施の形態】以下、本発明の実施形態を、図面
に基づいて説明する。図１は、本発明のリクライニング
椅子の側面図で、脚体(１)、座体(２)、背フレーム
(３)、及び背もたれ(４)を主要部として構成されてい
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a reclining chair of the present invention, which includes a leg (1), a seat (2), and a back frame.
(3) and the backrest (4) are the main components.

【００１０】脚体(１)は、放射状の５本の脚(５)と、そ
の中心に立設された脚柱(６)と、この脚柱(６)の上端に
回転自在に取付けられた前後方向に長い支基(７)とより
なり、脚柱(６)内には、支基(７)を上下動させて、座体
(２)の高さを調節するための昇降用ガススプリング(８)
（図３参照）が収容されている。The leg body (1) is rotatably attached to five radial legs (5), a column (6) standing upright in the center of the leg, and an upper end of the column (6). It consists of a support base (7) that is long in the front-rear direction, and the support base (7) is moved up and down in the pedestal (6) to create a seat body.
Lifting gas spring (8) for adjusting the height of (2)
(See FIG. 3) is housed.

【００１１】座体(２)は、座フレーム(９)と、その上面
に載設された合成樹脂製の方形の座シェル(10)と、その
上面に取付けられたクッション(11)とからなっている。The seat body (2) comprises a seat frame (9), a rectangular seat shell (10) made of synthetic resin mounted on the upper surface of the seat frame, and a cushion (11) mounted on the upper surface thereof. ing.

【００１２】図２及び図３に示すように（座シェル、ク
ッション、背もたれは図示略）、座フレーム(９)は、中
央部を下方に凹ませた鋼管等によりなる前後１対の左右
方向を向く横杆(12)(12)の中間部付近を、前後方向を向
く左右１対のＵ字状断面をなす連結部材(13)(13)により
結合することにより枠状に形成され、前後の横杆(12)の
左右両端には、正面視ほぼＶ字状の鋼製のガイドレール
(14)が、前後方向を向いて固着されている。As shown in FIGS. 2 and 3 (the seat shell, the cushion, and the backrest are not shown), the seat frame (9) comprises a pair of front and rear left and right directions made of a steel pipe or the like whose central portion is recessed downward. Formed in a frame shape by connecting the vicinity of the middle part of the facing horizontal rods (12) (12) with a pair of left and right connecting members (13) (13) having a U-shaped cross section facing in the front-rear direction. At the left and right ends of the horizontal rod (12), guide rails made of steel that are almost V-shaped in front view
(14) is fixed in the front-back direction.

【００１３】両ガイドレール(14)のＶ溝には、上記座シ
ェル(10)における左右両側部下面に突設された下向きの
突条（図示略）が、前後移動不能かつ上方への外れが防
止されて嵌合、支持されている。In the V-grooves of both guide rails (14), downward protruding ridges (not shown) provided on the lower surfaces of both left and right sides of the seat shell (10) are not movable in the front-rear direction and cannot be removed upward. It is prevented and fitted and supported.

【００１４】背フレーム(３）は、図２及び図３に示す
ように、前向Ｌ字状の左右１対の側杆(15)(15)における
上端部と後端部とを、板状の横杆(16)(16)により、かつ
前端部を、左右方向を向くパイプ状の支持杆(17)によ
り、それぞれ連結して構成されている。As shown in FIGS. 2 and 3, the back frame (3) has a pair of left and right side rods (15) (15) having a front L-shape and having a plate-like upper end and a rear end. The horizontal rods (16) and (16) are connected to each other, and the front end portions thereof are connected to each other by a pipe-shaped support rod (17) that faces in the left-right direction.

【００１５】支持杆(17)は、支基(７)における脚杆(６)
のやや前方に形成された側面視Ｕ字状の凹孔(18)によ
り、複数の２つ割状の軸受(19)を介して枢支されてい
る。The support rod (17) is a leg rod (6) in the support base (7).
It is pivotally supported through a plurality of split bearings (19) by a U-shaped concave hole (18) formed in a slightly forward direction.

【００１６】軸受(19)は、支基(７)の上面に複数のねじ
(20)により固定された押え金具(21)により、上方への抜
け外れが防止されている。The bearing (19) has a plurality of screws on the upper surface of the support base (7).
The retainer fitting (21) fixed by (20) prevents the retainer fitting (21) from coming off upward.

【００１７】背フレーム(３)における下方の横杆(16)の
中央下部と、支基(７)の後端との間には、背もたれ(４)
の後傾用ガススプリング(22)が取付けられ、図示しない
操作機構に連係した操作レバー(23)により、ガススプリ
ング(22)上端のパルプ操作部（図示略）を押圧すること
により、ガス圧に抗して背もたれ(４)を後傾させること
ができるようになっている。The backrest (4) is provided between the lower central portion of the lower horizontal rod (16) of the back frame (3) and the rear end of the support base (7).
A gas spring (22) for tilting backward is attached, and the operating lever (23) linked to an operating mechanism (not shown) presses the pulp operating portion (not shown) at the upper end of the gas spring (22) to increase the gas pressure. Against this, the backrest (4) can be tilted backwards.

【００１８】上記座フレーム(９)の前部側の横杆(12)の
水平部は、支基(７)の前端部上面に形成された、前後に
若干長目のＵ字状の凹孔(24)内に、Ｕ字形の２個の軸受
(25)を介して枢支されている。The horizontal portion of the horizontal rod (12) on the front side of the seat frame (9) is a U-shaped concave hole formed in the upper surface of the front end of the support base (7) and having a slightly long front and rear. Two U-shaped bearings in (24)
Pivoted through (25).

【００１９】横杆(12)は、その上面に２個の平板状軸受
(26)を載置し、これを、支基(７)の前端部上面にねじ(2
0)止めした押え金具(27)をもって固定することにより、
上方への抜け止めがなされるとともに、上下に回動及び
軸受(26)内を前後に移動可能として枢支されている。The horizontal rod (12) has two flat bearings on its upper surface.
Place (26) on the upper surface of the front end of the support base (7) and screw (2
0) By fixing with the stopped metal fitting (27),
It is prevented from coming out upward, and is pivotally supported so as to be able to rotate up and down and move in the bearing (26) back and forth.

【００２０】座フレーム(９)の後部側の横杆(12)の水平
部は、背フレーム(３)における両側杆(15)の上端部に形
成した上向の膨出部(28)(28)の上面に、複数の２つ割状
の軸受(29)を介して、２個の下向きＵ字形の軸受金具(3
0)をねじ(20)止めすることにより、上下に回動可能に枢
支されている。The horizontal portion of the horizontal rod (12) on the rear side of the seat frame (9) has upward bulging portions (28) (28) formed at the upper ends of both side rods (15) of the back frame (3). ) On the upper surface of the bearing brackets (29), and two downward U-shaped bearing fittings (3
It is pivotally supported up and down by screwing (0) the screw (20).

【００２１】上記背もたれ(４)は、背フレーム(３)の上
部の横杆(16)の前面に中間部の後面が枢着された背シェ
ル(4a)の前面に、図示しない背当てクッションを取付け
て構成されている。The backrest (4) is provided with a backrest cushion (not shown) on the front surface of the back shell (4a) in which the rear surface of the middle portion is pivotally attached to the front surface of the upper horizontal rod (16) of the back frame (3). It is installed and configured.

【００２２】図２及び図３に示すように、支基(７)の前
半部上面の凹所内には、背もたれ(４)を後傾させる際の
強さを調整するための強弱調整装置(31)が、若干後傾状
に収容されている。As shown in FIGS. 2 and 3, in the recess on the upper surface of the front half of the support base (7), a strength adjusting device (31) for adjusting the strength when the backrest (4) is tilted backward. ) Is slightly tilted backward.

【００２３】強弱調整装置(31)は、前後のばね受け(32)
(33)と、それらの間に設けられる圧縮コイルばね(34)
と、後部ばね受け(33)を前後方向に移動させるスライダ
(35)と、このスライダ(35)に挿通され、側端に円筒形の
操作把手(36)を備える操作ロッド(37)とからなってい
る。The strength adjustment device (31) includes front and rear spring bearings (32).
(33) and a compression coil spring (34) provided between them
And a slider for moving the rear spring support (33) in the front-back direction.
(35) and an operating rod (37) which is inserted into the slider (35) and has a cylindrical operating handle (36) at its side end.

【００２４】前部ばね受け(32)は、硬質合成樹脂よりな
り、前端面には、座フレーム(９)における前部側の横杆
(12)の中央部に後方より回動可能に嵌合しうるＵ字溝(3
8)が形成され、また後端面には、圧縮コイルばね(34)の
前端部に嵌合されてこれを支持する支持筒(39)が突設さ
れている。The front spring receiver (32) is made of a hard synthetic resin, and has a front end side lateral rod on the seat frame (9).
A U-shaped groove (3
8) is formed, and a support cylinder (39) fitted to the front end of the compression coil spring (34) to support the compression coil spring (34) is projectingly provided on the rear end surface.

【００２５】後部ばね受け(33)も、硬質合成樹脂により
形成され、図４及び図５に拡大して示すように、その前
端面には、圧縮コイルばね(34)の後端部に嵌合しうる支
持筒(40)が突設され、また、後面のほぼ左半部と左側面
には、上記スライダ(35)が摺動自在に嵌合しうるととも
に、奥面が斜め前後方向、すなわち左前端から斜め後ろ
右方に向かって傾斜する垂直の傾斜面(41)をなす凹溝(4
2)が形成されている。さらに、後部ばね受け(33)の後面
の右側部と右側面の後半部には、上記操作ロッド(37)が
挿通しうる、凹溝(42)よりも若干溝幅の小さなガイド凹
溝(43)が凹溝(42)と連続状に形成されている。なお、上
記傾斜面(41)の圧縮コイルばね(34)の軸線に対する角度
は、３０〜４０゜範囲とするのがよい。The rear spring receiver (33) is also made of a hard synthetic resin, and its front end face is fitted to the rear end of the compression coil spring (34) as shown in an enlarged view in FIGS. 4 and 5. A support cylinder (40) that can be mounted is projected, and the slider (35) can be slidably fitted to the substantially left half portion and the left side surface of the rear surface, and the back surface is diagonally forward and backward, that is, A concave groove (4) that forms a vertical inclined surface (41) that inclines diagonally rearward and rightward from the left front end
2) is formed. Further, in the right side portion of the rear surface of the rear spring bearing (33) and the rear half portion of the right side surface, the guide groove (43) having a slightly smaller groove width than the groove (42) through which the operation rod (37) can be inserted. ) Is formed continuously with the concave groove (42). The angle of the inclined surface (41) with respect to the axis of the compression coil spring (34) is preferably in the range of 30 to 40 °.

【００２６】上記スライダ(35)は、平面視直角三角形を
なすように、摩擦抵抗の小さな硬質合成樹脂（例えばア
セタール樹脂等）により一体成形され、その前方の斜辺
は、上記後部ばね受け(33)における凹溝(42)の奥面の傾
斜面(41)と摺接する垂直の傾斜カム面(44)となってい
る。The slider (35) is integrally formed of a hard synthetic resin (for example, acetal resin) having a small frictional resistance so as to form a right-angled triangle in a plan view, and the front hypotenuse thereof is the rear spring bearing (33). The vertical inclined cam surface (44) is in sliding contact with the inner inclined surface (41) of the concave groove (42).

【００２７】スライダ(35)の後部よりには、左右方向を
向き、かつ傾斜カム面(44)と左側面とに開口する軸孔(4
5)が穿設され、この軸孔(45)には、操作ロッド(37)にお
ける左半部の、外周面におねじ(46)が形成された小径軸
部(37a)が挿通されるようになっている（図６，図７参
照）。A shaft hole (4) facing the left-right direction from the rear part of the slider (35) and opening to the inclined cam surface (44) and the left side surface
5) is bored so that a small diameter shaft portion (37a) having a screw (46) formed on the outer peripheral surface of the left half portion of the operating rod (37) can be inserted into the shaft hole (45). (See FIGS. 6 and 7).

【００２８】操作ロッド(37)のおねじ(46)は、スライダ
(35)に形成された方形孔(47)に回動不能に嵌合した角ナ
ット(48)の左右方向を向くめねじ孔(48a)に螺合される
ようになっている。The male screw (46) of the operating rod (37) is attached to the slider.
The square nut (47) formed in (35) is screwed into a female screw hole (48a) oriented in the left-right direction of a square nut (48) fitted in a non-rotatable manner.

【００２９】操作把手(36)は、座フレーム(９)の右側端
部の直下に位置し、着座者が上方より回動操作しうるよ
うになっている。The operating handle (36) is located directly below the right end of the seat frame (9), and can be rotated by a seated person from above.

【００３０】上記構成の強弱調整装置(31)を支基(７)に
組付けるには、まずスライダ(35)を、前述した押え金具
(21)の前端に立設された平面視コ字状の保持金具(49)の
両側片(49a)間に嵌合し、両側片(49a)に穿設した通孔(5
0)とスライダ(35)の軸孔(45)とに、操作ロッド(37)に小
径軸部(37a)を挿通するとともに、そのおねじ(46)を、
スライダ(35)の方形孔(47)に嵌合した角ナット(48)に螺
合させ、小径軸部(37a)の側片(49a)よりの突出端部に、
ナット(51)を螺合することにより、スライダ(35)と、操
作ロッド(37)とを保持金具(49)に取付ける。In order to assemble the strength adjusting device (31) having the above structure to the support base (7), first, the slider (35) is attached to the above-mentioned holding metal fitting.
Fitting between both side pieces (49a) of the U-shaped holding metal fitting (49) standing on the front end of (21), the through hole (5
0) and the shaft hole (45) of the slider (35), insert the small-diameter shaft portion (37a) into the operating rod (37), and attach its male screw (46).
Screw the square nut (48) fitted in the square hole (47) of the slider (35) into the protruding end of the small diameter shaft (37a) from the side piece (49a).
The slider (35) and the operating rod (37) are attached to the holding metal fitting (49) by screwing the nut (51).

【００３１】ついで、スライダ(35)に、後部ばね受け(3
3)の凹溝(42)を嵌合し、その奥面の傾斜面(41)を傾斜カ
ム面(44)に当接させる。The slider (35) is then attached to the rear spring bearing (3
The concave groove (42) of 3) is fitted, and the inclined surface (41) at the back is brought into contact with the inclined cam surface (44).

【００３２】ついで、圧縮コイルばね(34)を、その後端
部を後部ばね受け(33)の支持筒(40)に、かつ前端部を、
座フレーム(９)の前部の横杆(12)に嵌合した前部ばね受
け(32)における支持筒(39)に、それぞれ嵌合して支持す
ることにより、前後のばね受け(32)(33)間に圧縮可能に
取付ける。Then, the compression coil spring (34), the rear end portion thereof to the support cylinder (40) of the rear spring receiver (33) and the front end portion thereof are
The front and rear spring bearings (32) are fitted and supported by the support cylinders (39) of the front spring bearings (32) fitted to the front side rods (12) of the seat frame (9). (33) Install in a compressible manner.

【００３３】図６は、強弱調整装置(31)組付後の平面図
で、圧縮コイルばね(34)に、圧縮力が加わっていない状
態を示している。FIG. 6 is a plan view after the strength adjustment device (31) is assembled, showing a state in which no compression force is applied to the compression coil spring (34).

【００３４】この状態において、背もたれ(４)をガスス
プリング(22) のガス圧に抗して後傾させた際には、そ
の抵抗力は弱くなる。In this state, when the backrest (4) is tilted backward against the gas pressure of the gas spring (22), its resistance becomes weak.

【００３５】すなわち、図３より明らかなように、背も
たれ(４)の後傾により背フレーム(３)が支持杆(17)を中
心として下向きに回動すると、それに連動して、背フレ
ーム(３)の両側杆(15)に枢支されている座フレーム(９)
の後端部が斜め後ろ下方に下傾させられることにより、
座フレーム(９)の前部側の横杆(12)は、前部ばね受け(3
2)と共に圧縮コイルばね(34)を圧縮させて若干後方に移
動する。That is, as is apparent from FIG. 3, when the back frame (3) pivots downward about the support rod (17) due to the rearward leaning of the backrest (4), the back frame (3) is interlocked with it. ) Seat frame (9) pivotally supported on both rods (15)
By tilting the rear end of the rear diagonally downward,
The side rod (12) on the front side of the seat frame (9) has a front spring support (3
Along with 2), the compression coil spring (34) is compressed and moved slightly backward.

【００３６】従って、図６に示す状態では、圧縮コイル
ばね(34)の圧縮抵抗が小さいため、座フレーム(９)及び
背フレーム(３)の傾動に対する抵抗力は弱くなる。Therefore, in the state shown in FIG. 6, since the compression resistance of the compression coil spring (34) is small, the resistance against tilting of the seat frame (9) and the back frame (3) becomes weak.

【００３７】図７に示すように、操作把手(36)と共に、
操作ロッド(37)を矢印の方向に回動させると、角ナット
(48)を介してスライダ(35)が右方に移動し、その傾斜カ
ム面(44)と摺動している後部ばね受け(33)が前方に押動
させられることにより、圧縮コイルばね(34)は圧縮され
る。As shown in FIG. 7, together with the operating handle (36),
Rotate the operating rod (37) in the direction of the arrow and
The slider (35) moves to the right via the (48), and the rear spring bearing (33) sliding on the inclined cam surface (44) is pushed forward to move the compression coil spring ( 34) is compressed.

【００３８】この状態で、上述のように背もたれ(４)を
後傾させると、圧縮コイルばね(34)の圧縮抵抗が大とな
るため、座フレーム(９)及び背フレーム(３)の傾動に対
する抵抗力は強くなる。In this state, if the backrest (4) is tilted backward as described above, the compression resistance of the compression coil spring (34) becomes large, so that the seat frame (9) and the back frame (3) are tilted. Resistance becomes stronger.

【００３９】このように、操作把手(36)を回動させて圧
縮コイルばね(34)の強さを調節することにより、着座者
の好みに応じて、背もたれ(４)を後傾させる際の抵抗力
を自由に調整することができる。In this way, by rotating the operating handle (36) to adjust the strength of the compression coil spring (34), the backrest (4) can be tilted backward according to the preference of the seated person. The resistance can be adjusted freely.

【００４０】以上説明したように、上記実施形態のリク
ライニング椅子においては、座フレーム(９)における支
基(７)及び背フレーム(３)への枢支部である前後部を、
左右方向を向く鋼管等よりなる中空軸状の横杆(12)と
し、前後の横杆(12)の中間部を直接支基(７)と背フレー
ム(３)により枢支するようにしているため、座フレーム
(９)における支基(７)や背フレーム(３)への枢支部に支
持片等を突設し、これを、左右方向を向くピン等を用い
て枢着したりする必要はなく、座フレーム(９)取付用の
部品点数が削減されてコスト低減が図れるとともに、座
フレーム(９)を簡単に組付けることができる。As described above, in the reclining chair of the above-described embodiment, the front and rear portions, which are the pivotal support portions to the support base (7) and the back frame (3) in the seat frame (9),
A hollow rod-shaped horizontal rod (12) made of steel pipe or the like facing in the left-right direction is provided, and the middle portion of the front and rear horizontal rods (12) is directly supported by the support base (7) and the back frame (3). For seat frame
It is not necessary to project a support piece or the like on the pivot base (7) or the pivotal support portion to the back frame (3) in (9), and to pivotally attach the support piece using a pin or the like pointing in the left-right direction. The number of parts for mounting the frame (9) can be reduced to reduce the cost, and the seat frame (9) can be easily assembled.

【００４１】また、前後の横杆(12)の左右方向の枢支領
域が比較的大きいため、座フレーム(９)は安定的に傾動
することができる。Further, the seat frame (9) can be stably tilted because the lateral pivot regions of the front and rear lateral rods (12) are relatively large.

【００４２】強弱調整装置(31)の操作ロッド(37)は、左
右方向を向いているため、その右側端に取付けた操作把
手(36)を、着座姿勢のまま上方より回動操作することが
でき、操作軸が上下方向を向き、かつ操作把手が座体の
下方に位置している通常のものに比して、背もたれ(４)
の傾動の強弱を調節する際の操作性が著しく向上する。Since the operation rod (37) of the strength adjustment device (31) is oriented in the left-right direction, the operation handle (36) attached to the right end of the operation rod (37) can be rotated from above while sitting. The backrest (4) of the backrest (4) which can be operated and the operation shaft faces the up-down direction and the operation handle is located below the seat body.
The operability when adjusting the strength of tilting of the robot is significantly improved.

【００４３】なお、上記実施形態では、座フレーム(９)
の前後の横杆(12)を、中空軸状としているが、中実のロ
ッドにより形成してもよく、また、枢支部のみの断面形
状を円形とし、他の部分は適宜の断面形状とすることも
ある。In the above embodiment, the seat frame (9)
The front and rear horizontal rods (12) have a hollow shaft shape, but they may be formed by a solid rod, and the cross-sectional shape of only the pivotal support portion has a circular shape, and the other portions have an appropriate cross-sectional shape. Sometimes.

【００４４】上記実施形態の強弱調整装置(31)は、スラ
イダ(35)をねじにより操作把手(36)側に移動させて、後
部ばね受け(33)を前方に押動すようにしているが、操作
ロッド(37)を、実施形態とは反対に左方に突出させ、左
側より操作把手(36)を回動させてスライダ(35)を右方に
移動することにより、後部ばね受け(33)を前方に押動す
るようにしてもよい。In the strength adjusting device (31) of the above embodiment, the slider (35) is moved to the side of the operating handle (36) by a screw to push the rear spring bearing (33) forward. Contrary to the embodiment, the operation rod (37) is projected to the left, the operation handle (36) is rotated from the left side, and the slider (35) is moved to the right, whereby the rear spring support (33 ) May be pushed forward.

【００４５】角ナット(48)を省略し、スライダ(35)に形
成しためねじ孔に操作ロッド(37)のおねじ(46)を直接螺
合してもよいことは勿論である。It goes without saying that the square nut (48) may be omitted and the male screw (46) of the operating rod (37) may be directly screwed into the screw hole for forming the slider (35).

【００４６】[0046]

【発明の効果】請求項１記載の発明によれば、強弱調整
手段の操作ロッドは左右方向を向いているため、その側
端に取付けた操作把手を回動する際の操作性が向上し、
それを着座姿勢のままでも操作しうる。According to the first aspect of the present invention, since the operation rod of the strength adjustment means is oriented in the left-right direction, the operability when rotating the operation handle attached to the side end of the operation rod is improved,
It can be operated even in the sitting position.

【００４７】また、強弱調整手段を構成する部材の組付
けや取外し、分解が簡単であるため、それらの分別廃棄
等も容易となる。Further, since the members constituting the strength adjusting means are easily assembled, removed, and disassembled, it becomes easy to separate and discard them.

【００４８】請求項２記載の発明によれば、座フレーム
の下傾時に、その軸状部と前部側のばね受けとが相対回
動するようになるため、圧縮コイルばねが下方に撓んだ
り、その前端と座フレームとの当接面が大きく摩耗した
りするのが防止される。According to the second aspect of the present invention, when the seat frame is tilted downward, the shaft-shaped portion and the spring receiver on the front side rotate relative to each other, so that the compression coil spring bends downward. However, the contact surface between the front end and the seat frame is prevented from being greatly worn.

【００４９】請求項３記載の発明によれば、後部側のば
ね受けが上下方向にがた付く恐れがなくなるので、前後
方向に安定的に移動し、圧縮コイルばねをその軸線方向
に押動することができる。According to the third aspect of the invention, since there is no risk of the rear side spring bearing rattling in the vertical direction, the spring receiver moves stably in the front-rear direction and pushes the compression coil spring in the axial direction. be able to.

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

【図１】本発明のリクライニング椅子の側面図である。FIG. 1 is a side view of a reclining chair of the present invention.

【図２】同じく、座フレームと背フレーム、及びそれら
の関連部品の脚体への組付前の分解斜視図である。FIG. 2 is likewise an exploded perspective view of a seat frame, a back frame, and related parts thereof before being attached to a leg.

【図３】同じく、座フレーム及び背フレームの組付後の
要部の中央縦断側面図である。FIG. 3 is likewise a central longitudinal side view of the main part of the seat frame and the back frame after assembly.

【図４】強弱調整装置の後部ばね受けの拡大斜視図であ
る。FIG. 4 is an enlarged perspective view of a rear spring bearing of the strength adjustment device.

【図５】同じく、図４のＶ−Ｖ線の横断平面図である。5 is a cross-sectional plan view taken along line VV of FIG.

【図６】同じく、強弱調整装置組付後の拡大平面図であ
る。FIG. 6 is likewise an enlarged plan view after the strength adjustment device is assembled.

【図７】同じく、圧縮コイルばねを圧縮した状態の拡大
平面図である。FIG. 7 is likewise an enlarged plan view of the compressed coil spring in a compressed state.

【符号の説明】[Explanation of symbols]

(１)脚体 (２)座体 (３)背フレーム (４)背もたれ (4a)背シェル (５)脚 (６)脚柱 (７)支基 (８)昇降用ガススプリング (９)座フレーム (10)座シェル (11)クッション (12)横杆 (13)連結部材 (14)ガイドレール (15)側杆 (16)横杆 (17)支持杆 (18)凹孔 (19)軸受 (20)ねじ (21)押え金具 (22)後傾用ガススプリング (23)操作レバー (24)凹孔 (25)(26)軸受 (27)押え金具 (28)膨出部 (29)軸受 (30)軸受金具 (31)強弱調整装置（強弱調整手段） (32)前部ばね受け (33)後部ばね受け (34)圧縮コイルばね (35)スライダ (36)操作把手 (37)操作ロッド (37a)小径軸部 (38)Ｕ字溝 (39)(40)支持筒 (41)傾斜面 (42)凹溝 (43)ガイド凹溝 (44)傾斜カム面 (45)軸孔 (46)おねじ (47)方形孔 (48)角ナット (48a)めねじ孔 (49)保持金具 (49a)側片 (50)通孔 (51)ナット (1) Leg (2) Seat (3) Back frame (4) Backrest (4a) Back shell (5) legs (6) Pillar (7) Support base (8) Lifting gas spring (9) Seat frame (10) Seat shell (11) Cushion (12) Yokomo (13) Connection member (14) Guide rail (15) Side bar (16) Yokomo (17) Support rod (18) Recessed hole (19) Bearing (20) screw (21) Presser bracket (22) Rear tilt gas spring (23) Operating lever (24) Recessed hole (25) (26) Bearing (27) Presser bracket (28) Bulging part (29) Bearing (30) Bearing bracket (31) Strength adjustment device (strength adjustment means) (32) Front spring support (33) Rear spring support (34) Compression coil spring (35) Slider (36) Operation handle (37) Operation rod (37a) Small diameter shaft (38) U-shaped groove (39) (40) Support tube (41) Slope (42) Groove (43) Guide groove (44) Inclined cam surface (45) Shaft hole (46) Male thread (47) Square hole (48) Square nut (48a) Female thread hole (49) Holding bracket (49a) Side piece (50) Through hole (51) Nut

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3B084 GA02 3B091 AA04 AB04 AC05 3B099 AA02 BA08    ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3B084 GA02                 3B091 AA04 AB04 AC05                 3B099 AA02 BA08

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 背もたれを備える側面視前向Ｌ字状をな
す背フレームの前端下部を、脚体上部の支基に枢着する
とともに、座フレームの前部を、前記支基の前端部に前
後に移動可能に枢支し、同じく、座フレームの後部を、
前記背フレームの前端部に枢着することにより、背フレ
ームの後傾と連動して、座フレームの後部が下傾するよ
うにしてなり、かつ前記支基と座フレームとの間に、前
記背フレーム後傾時の抵抗力の強さを調整しうる強弱調
整手段を設けてなるリクライニング椅子において、 前記強弱調整手段が、前後方向を向き、前端が前記座フ
レームの前端部に当接することにより、これを前方に付
勢可能な圧縮コイルばねと、該圧縮コイルばねの後端を
保持し、かつ前後方向に移動可能として圧縮コイルばね
を伸縮させるばね受けと、該ばね受けの後方において前
記支基に左右方向に移動可能に保持され、かつばね受け
の後面と摺動する前面が、左右いずれか一方への移動時
にばね受けを前方に押動するように作用する傾斜カム面
をなすスライダと、前記支基に左右方向に向けて回動可
能に支持され、かつ先端部のおねじを前記スライダに形
成しためねじ孔に螺合することにより、該スライダを左
右方向に移動させうる、側端に操作把手を取付けてなる
操作ロッドとを備えることを特徴とするリクライニング
椅子。1. A front frame of an L-shaped back frame having a backrest in a side view and having a front end lower part pivotally attached to a support base of an upper leg body, and a front part of the seat frame attached to a front end part of the support base. It is movably pivoted back and forth, and similarly, at the rear of the seat frame,
By pivotally attaching to the front end of the back frame, the rear part of the seat frame is tilted downward in conjunction with the rearward tilt of the back frame, and the back frame is provided between the support base and the seat frame. In a reclining chair provided with strength adjustment means capable of adjusting the strength of resistance force when the frame is tilted backward, the strength adjustment means faces in the front-rear direction, and the front end abuts the front end portion of the seat frame, A compression coil spring capable of urging the compression coil spring forward, a spring receiver that holds the rear end of the compression coil spring and is movable in the front-rear direction to expand and contract the compression coil spring, and the support base behind the spring receiver. A slider that has a front surface that is movably held in the left-right direction and that slides with the rear surface of the spring bearing and that acts to push the spring bearing forward when moving to one of the left and right sides; Previous A side end that is rotatably supported in the left-right direction on the support base and that can move the slider in the left-right direction by screwing it into a screw hole for forming a male screw at the tip of the slider. A reclining chair, comprising: an operating rod having an operating handle attached thereto. 【請求項２】 座フレームの前端部における支基への枢
支部を、左右方向を向く軸状とし、その軸状部に後方よ
り回動可能に嵌合したばね受けの後端部により、圧縮コ
イルばねの前端を保持してなる請求項１記載のリクライ
ニング椅子。2. The front end portion of the seat frame has a pivotal support portion to the support base, which has a shaft shape facing in the left-right direction, and is compressed by a rear end portion of a spring bearing fitted to the shaft portion so as to be rotatable from the rear side. The reclining chair according to claim 1, wherein a front end of the coil spring is held. 【請求項３】 後部側のばね受けの後面に、スライダが
左右方向に摺動可能に嵌合する凹溝を設け、かつ該凹溝
におけるスライダの傾斜カム面と対向する奥面を、該傾
斜カム面と同方向を向く傾斜面として、それらを摺動可
能に摺接させてなる請求項１または２記載のリクライニ
ング椅子。3. A rear groove on the rear side of the spring bearing is provided with a concave groove into which the slider is slidably fitted in the left-right direction, and the rear surface of the concave groove facing the inclined cam surface of the slider is formed with the inclined surface. The reclining chair according to claim 1 or 2, wherein the inclined surface is oriented in the same direction as the cam surface, and is slidably slidably contacted thereto.
JP2002047403A 2002-02-25 2002-02-25 Reclining chair Expired - Fee Related JP3974425B2 (en)

Priority Applications (1)

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JP2002047403A JP3974425B2 (en) 2002-02-25 2002-02-25 Reclining chair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002047403A JP3974425B2 (en) 2002-02-25 2002-02-25 Reclining chair

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JP2003245155A true JP2003245155A (en) 2003-09-02
JP3974425B2 JP3974425B2 (en) 2007-09-12

Family

ID=28660466

Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006181101A (en) * 2004-12-27 2006-07-13 Kokuyo Furniture Co Ltd Chair equipped with device for adjusting reaction force against tilt
JP2007151738A (en) * 2005-12-02 2007-06-21 Plus Corp Seat
JP2008132322A (en) * 2006-10-26 2008-06-12 Takano Co Ltd Reaction adjusting device for chair
JP2009207765A (en) * 2008-03-05 2009-09-17 Takano Co Ltd Device for adjusting reaction force of reaction force mechanism for chair
JP2012135395A (en) * 2010-12-27 2012-07-19 Kokuyo Co Ltd Chair
WO2013065815A1 (en) * 2011-11-04 2013-05-10 株式会社岡村製作所 Chair
CN103720230A (en) * 2014-01-16 2014-04-16 陈敏 Executive chair capable of conveniently adjusting tipping angle
CN104605648A (en) * 2015-01-29 2015-05-13 安吉富和家具有限公司 Synchronous different-angle base plate for backrest and cushion

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006181101A (en) * 2004-12-27 2006-07-13 Kokuyo Furniture Co Ltd Chair equipped with device for adjusting reaction force against tilt
JP2007151738A (en) * 2005-12-02 2007-06-21 Plus Corp Seat
JP2008132322A (en) * 2006-10-26 2008-06-12 Takano Co Ltd Reaction adjusting device for chair
JP2009207765A (en) * 2008-03-05 2009-09-17 Takano Co Ltd Device for adjusting reaction force of reaction force mechanism for chair
JP2012135395A (en) * 2010-12-27 2012-07-19 Kokuyo Co Ltd Chair
WO2013065815A1 (en) * 2011-11-04 2013-05-10 株式会社岡村製作所 Chair
JP2013116312A (en) * 2011-11-04 2013-06-13 Okamura Corp Chair
CN103917133A (en) * 2011-11-04 2014-07-09 株式会社冈村制作所 Chair
US9095217B2 (en) 2011-11-04 2015-08-04 Okamura Corporation Chair
CN103720230A (en) * 2014-01-16 2014-04-16 陈敏 Executive chair capable of conveniently adjusting tipping angle
CN104605648A (en) * 2015-01-29 2015-05-13 安吉富和家具有限公司 Synchronous different-angle base plate for backrest and cushion
CN104605648B (en) * 2015-01-29 2017-02-22 安吉富和家具有限公司 Synchronous different-angle base plate for backrest and cushion

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