JP2003135192A - Vertical elevating and lowering unit for seat in chair - Google Patents
Vertical elevating and lowering unit for seat in chairInfo
- Publication number
- JP2003135192A JP2003135192A JP2001338499A JP2001338499A JP2003135192A JP 2003135192 A JP2003135192 A JP 2003135192A JP 2001338499 A JP2001338499 A JP 2001338499A JP 2001338499 A JP2001338499 A JP 2001338499A JP 2003135192 A JP2003135192 A JP 2003135192A
- Authority
- JP
- Japan
- Prior art keywords
- support base
- valve
- seat
- operating rod
- lever
- 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
Links
Landscapes
- Chairs Characterized By Structure (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、椅子における座の
上下昇降装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for vertically moving a seat in a chair.
【０００２】[0002]
【従来の技術】従来の座の高さ調節機能を有する椅子
は、支持脚に立設させた脚支柱内に、ガススプリングを
設けて、脚支柱を伸縮可能とし、この脚支柱の上端部
に、座及び背凭れを支持する支基を固定し、この支基
に、ガススプリングの上端面より突出する出没式のバル
ブを押動する操作杆を設け、この操作杆を座の下方に設
けたレバーと連係させている。2. Description of the Related Art A chair having a conventional seat height adjusting function is provided with a gas spring in a leg strut standing on a supporting leg so that the leg strut can be expanded and contracted. , A supporting base for supporting the seat and the backrest is fixed, and an operating rod for pushing the retractable valve protruding from the upper end surface of the gas spring is provided on the supporting base, and the operating rod is provided below the seat. It is linked to the lever.
【０００３】[0003]
【発明が解決しようとする課題】前記のような従来の座
の上下昇降装置は、レバーを操作しないときには、バル
ブと操作杆との間に、間隙が生じ、そのためレバーを操
作して、バルブを作動させる際に、レバー操作の初期段
階において、操作杆が前記間隙の寸法だけ動いてバルブ
に当接するまでは、無負荷状態であり、前記当接によっ
て初めて負荷状態となる。そのため、レバー操作が２段
階となり、円滑に操作することができなかった。本発明
は、かかる現状に鑑み、簡単な構造で、レバー操作が２
段階とならず、円滑に操作することができる座の上下昇
降装置を提供することを目的とする。In the conventional seat up-and-down lifting device as described above, when the lever is not operated, a gap is created between the valve and the operating rod. Therefore, the lever is operated to operate the valve. When the lever is operated, in the initial stage of the lever operation, there is no load until the operating rod moves by the size of the gap and comes into contact with the valve. Therefore, the lever operation is performed in two stages, and the smooth operation cannot be performed. In view of such a current situation, the present invention has a simple structure and has two lever operations.
It is an object of the present invention to provide a seat up-and-down lifting device that can be operated smoothly without steps.
【０００４】[0004]
【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) 脚支柱内に下端部が支持されるとともに、支基に
上端部が取付けられ、上端面に突出するバルブをレバー
操作により下方に押し下げることによって、支基を上下
動可能とするガススプリングを備えた座の上下昇降装置
であって、前記バルブの上方に、前記レバーと連動し、
かつ前記バルブから離間した支点を有する操作杆の先端
部を位置させ、さらに前記支基の上方を覆う合成樹脂製
の支基カバーを設け、前記操作杆の先端部下面が前記バ
ルブの上面に、ガススプリングが作動しない程度に、常
時、当接するように、前記支基カバーの下面を、前記操
作杆の上面に、弾性作用によって圧接させた、椅子にお
ける座の上下昇降装置とする。According to the present invention, the above problems can be solved as follows. (1) A gas spring in which the lower end is supported in the leg column, the upper end is attached to the support base, and the valve protruding to the upper end surface is pushed down by the lever operation to allow the support base to move up and down. A seat up-and-down lifting device provided with, above the valve, interlocking with the lever,
And the tip end portion of the operating rod having a fulcrum separated from the valve is positioned, and further provided with a support base cover made of synthetic resin that covers the upper side of the support base, the lower end portion of the operating rod is the upper surface of the valve, An upper and lower device for lifting and lowering a seat in a chair is configured such that the lower surface of the support base cover is elastically pressed against the upper surface of the operating rod so that the gas spring is always in contact with the operating lever so that the gas spring does not operate.
【０００５】(２) 上記(１)項において、前記支基カバ
ーにおける、操作杆に圧接させる部分の周囲に、Ｕ字形
のスリットを設ける。(2) In the above item (1), a U-shaped slit is provided around the portion of the support base cover that is pressed against the operating rod.
【０００６】(３) 上記(１)または(２)項において、前
記支基カバーと操作杆との間に、弾性部材を介在させ、
支基カバーの下面を、操作杆の上面に間接的に圧接させ
る。(3) In the above item (1) or (2), an elastic member is interposed between the support base cover and the operating rod,
The lower surface of the support base cover is indirectly brought into pressure contact with the upper surface of the operating rod.
【０００７】[0007]
【発明の実施の形態】図１は、本発明の座の上下昇降装
置を備えた椅子の側面図、図２は、図１における座の上
下昇降装置のII−II線縦断面図、図３は、図２における
III−III線縦断面図、図４は、図１における上下昇降装
置を、支基カバーを取り外して示した斜視図である。1 is a side view of a chair equipped with a seat up-down lifting device according to the present invention, and FIG. 2 is a vertical sectional view taken along line II-II of the seat up-down lifting device in FIG. In Figure 2
FIG. 4 is a vertical cross-sectional view taken along line III-III, and FIG. 4 is a perspective view showing the vertical lifting device in FIG. 1 with the support base cover removed.
【０００８】図示するように、椅子(１)における脚支柱
(２)は、支持脚(３)に立設された固定筒(４)と、上端部
が支基(５)に固着され、固定筒(４)に対して上下動可能
として外嵌された可動筒(６)とを備え、それらの中央部
に、ガススプリング(７)が内蔵されている。As shown, the leg support in the chair (1)
In (2), a fixed cylinder (4) erected on the support leg (3) and an upper end thereof are fixed to a support base (5) and are fitted onto the fixed cylinder (4) so as to be vertically movable. A movable cylinder (6) is provided, and a gas spring (7) is built in the central portion thereof.
【０００９】ガススプリング(７)は、シリンダ(８)と、
その下端から下向に向かって進退するピストンロッド
(９)とを備えている。シリンダ(８)の上端面中央には、
突出状態において、シリンダ(８)からのピストンロッド
(９)の進退を不能とし、下方に押し下げることによっ
て、シリンダ(８)からのピストンロッド(９)の進退を可
能とするようにしたバルブ(10)が設けられている。The gas spring (7) includes a cylinder (8),
Piston rod that advances and retreats downward from its lower end
(9) is provided. At the center of the upper end surface of the cylinder (8),
Piston rod from cylinder (8) in protruding state
A valve (10) is provided which makes it possible to move the piston rod (9) forward and backward from the cylinder (8) by making the forward and backward movement of (9) impossible and pushing it downward.
【００１０】このバルブ(10)を押し下げた状態にしてい
る間は、図示を省略したガス圧により、ピストンロッド
(９)は、常時、シリンダ(８)から進出する方向に付勢さ
れている。ピストンロッド(９)の下端部は、固定筒(４)
の下端部に固定され、シリンダ(８)の上端部は、支基
(５)の後部中央のテーパ孔(11)に圧嵌されている。した
がって、支基(５)は、バルブ(10)を下方に押し下げるこ
とによって、上下動可能となっている。While the valve (10) is being pushed down, the piston rod is driven by the gas pressure (not shown).
(9) is always urged in the direction of advancing from the cylinder (8). The lower end of the piston rod (9) is fixed cylinder (4)
It is fixed to the lower end of the cylinder, and the upper end of the cylinder (8) is
(5) It is press-fitted into the taper hole (11) at the center of the rear part. Therefore, the support base (5) can be moved up and down by pushing down the valve (10).
【００１１】前記バルブ(10)は、支基(５)に取付けられ
た操作杆(12)端部のレバー(14)によって作動される。支
基(５)は、箱状の支基本体(15)と、それを上方から覆う
支基カバー(16)とよりなる。The valve (10) is operated by a lever (14) at the end of the operating rod (12) attached to the support base (5). The support base (5) comprises a box-shaped support base (15) and a support base cover (16) covering the support base from above.
【００１２】操作杆(12)は、平面視においてクランク状
をなし、先端部(12a)と後端部(12b)とを、支基(５)の左
右方向に、中間部(12c)を前後方向に位置させて、左右
方向の軸まわりに回動しうるようにして、中間部(12c)
において、取付金具(13)により、支基本体(15)内に枢支
されている。The operating rod (12) has a crank shape in plan view, and has a front end portion (12a) and a rear end portion (12b) in the left-right direction of the support base (5) and an intermediate portion (12c) in the front-back direction. Position so that it can be rotated around the axis in the left-right direction, the middle part (12c)
In the above, a mounting bracket (13) pivotally supports the support base body (15).
【００１３】前記操作杆(12)は、先端部(12a)の下面を
平面状に面取りして、その面取部(12d)を前記バルブ(1
0)の頂部(10a)に当接させるとともに、後端部(12b)に
は、レバー(14)を取付けてある。In the operating rod (12), the lower surface of the tip portion (12a) is chamfered into a flat surface, and the chamfered portion (12d) is attached to the valve (1).
The lever (14) is attached to the rear end portion (12b) while being brought into contact with the top portion (10a) of 0).
【００１４】このレバー(14)を、図４に示す左右方向の
軸まわりの矢印Ｒの向きに回動させるように操作するこ
とにより、操作杆(12)は、前記取付金具(13)によって取
付けた中間部分(12c)を支点として同じ向きに回動し、
先端部(12a)が、バルブ(10)とともに、下方に押し下げ
られる。By operating the lever (14) so as to rotate it in the direction of the arrow R around the axis in the left-right direction shown in FIG. 4, the operating rod (12) is mounted by the mounting bracket (13). Rotate in the same direction with the middle part (12c) as the fulcrum,
The tip (12a) is pushed down together with the valve (10).
【００１５】操作杆(12)が固定された支基本体(15)に
は、上方から合成樹脂製の支基カバー(16)が、図示を省
略したボルトで取付けられている。支基本体(15)は、支
基カバー(16)とともに、前上りに傾斜して、脚支柱(２)
に取付けられている。A support base cover (16) made of synthetic resin is attached to the support base body (15) to which the operating rod (12) is fixed from above by a bolt (not shown). The support base (15), together with the support base cover (16), is inclined forward and upward, and the leg support (2).
Installed on.
【００１６】支基カバー(16)のバルブ(10)の上方に位置
する部分には、前向きＵ字形のスリット(16a)が設けら
れ、そのスリット(16a)の内方部分により、バルブ当接
片(16b)が形成されている。このバルブ当接片(16b)は、
前上りに傾斜している支基カバー(16)の軸線に対して、
傾斜し、ほぼ水平となっており、バルブ当接片(16b)の
基部(16c)のヒンジ作用により、上下方向に弾性変形し
うるようになっている。A forward U-shaped slit (16a) is provided in a portion of the support base cover (16) located above the valve (10), and a valve contact piece is formed by an inner portion of the slit (16a). (16b) is formed. This valve contact piece (16b) is
With respect to the axis of the support base cover (16) that is inclined forward and upward,
It is inclined and almost horizontal, and can be elastically deformed in the vertical direction by the hinge action of the base portion (16c) of the valve contact piece (16b).
【００１７】このバルブ当接片(16b)の下面を、前記ヒ
ンジによる弾性作用により、ガススプリング(７)が作動
しない程度の力で、前記操作杆(12)の先端部(12a)の上
面に圧接させ、前記先端部(12a)の下面をバルブ(10)の
頂面に当接させてある。The lower surface of the valve contact piece (16b) is brought into contact with the upper surface of the tip portion (12a) of the operating rod (12) by a force such that the gas spring (7) does not operate due to the elastic action of the hinge. The lower surface of the tip portion (12a) is brought into contact with the top surface of the valve (10) by press contact.
【００１８】それによって、バルブ(10)と、操作杆(12)
の先端部(12a)間、およびその先端部(12a)とバルブ当接
片(16b)間には、いずれも、常時、間隙が生じない。そ
のため、レバー(14)を操作して、座(17)の高さを調節し
ようとする際に、レバー(14)の操作が、２段階となら
ず、円滑に操作することができる。Thereby, the valve (10) and the operating rod (12)
No gaps are always formed between the tip portions (12a) of the above and between the tip portion (12a) and the valve contact piece (16b). Therefore, when the lever (14) is operated to adjust the height of the seat (17), the operation of the lever (14) does not have to be performed in two steps, and the operation can be performed smoothly.
【００１９】また、支基カバー(16)に前記Ｕ字形のスリ
ット(16a)を設けることに代えて、あるいはそれと併せ
て、支基カバー(16)と、操作杆(12)の先端部(12a)との
間に、弾性を有する板状体などの弾性部材を介在させ
て、支基カバー(16)の下面を、操作杆(12)の上面に間接
的に圧接させてもよい。Further, instead of or in addition to providing the U-shaped slit (16a) in the support base cover (16), the support base cover (16) and the tip portion (12a) of the operating rod (12) are provided. ), An elastic member such as an elastic plate may be interposed, and the lower surface of the support base cover (16) may be indirectly brought into pressure contact with the upper surface of the operating rod (12).
【００２０】[0020]
【発明の効果】本発明によると、次のような効果を奏す
ることができる。
(１) 請求項１記載の発明によれば、前記したように、
簡単な構造で、レバー操作が２段階とならず、円滑に座
の高さを調節することができる。そのため、レバー操作
を繰りかえしても、疲労感が残らない椅子を、比較的廉
価なコストで製造することができる。According to the present invention, the following effects can be obtained. (1) According to the invention of claim 1, as described above,
With a simple structure, lever operation does not have to be performed in two steps, and the seat height can be adjusted smoothly. Therefore, even if the lever operation is repeated, a chair that does not leave a feeling of fatigue can be manufactured at a relatively low cost.
【００２１】(２) 請求項２記載の発明によれば、ガス
スプリングが作動しない程度の力で、操作杆の先端部の
下面を、バルブの頂面に当接させるために必要な弾性作
用を有するバルブ当接片を、容易に成形することができ
る。(2) According to the second aspect of the invention, the elastic action required to bring the lower surface of the tip of the operating rod into contact with the top surface of the valve with a force that does not activate the gas spring is provided. The valve contact piece that it has can be easily molded.
【００２２】(３) 請求項３記載の発明によれば、弾性
部材を適宜のものに交換することによって、支基カバー
の下面を、操作杆の上面に圧接させるための下向きの弾
性力を、ガススプリングが作動しない程度の適宜の大き
さに調節することができる。(3) According to the third aspect of the invention, by replacing the elastic member with an appropriate one, a downward elastic force for pressing the lower surface of the support base cover against the upper surface of the operating rod is provided. It can be adjusted to an appropriate size such that the gas spring does not operate.
【図１】本発明の座の上下昇降装置を備えた椅子の側面
図である。FIG. 1 is a side view of a chair equipped with a seat up-down device according to the present invention.
【図２】図１における座の上下昇降装置のII−II線縦断
面図である。FIG. 2 is a vertical sectional view taken along line II-II of the seat up-down lifting device in FIG.
【図３】図２におけるIII−III線縦断面図である。3 is a vertical sectional view taken along line III-III in FIG.
【図４】図１における上下昇降装置を、支基カバーを取
り外して示した斜視図である。FIG. 4 is a perspective view showing the vertical lifting device in FIG. 1 with a support base cover removed.
(１)椅子 (２)脚支柱 (３)支持脚 (４)固定筒 (５)支基 (６)可動筒 (７)ガススプリング (８)シリンダ (９)ピストンロッド (10)バルブ (10a)頂部 (11)テーパ孔 (12)操作杆 (12a)先端部 (12b)後端部 (12c)中間部 (12d)面取部 (13)取付金具 (14)レバー (15)支基本体 (16)支基カバー (16a)スリット (16b)バルブ当接片 (16c)基部 (17)座 (1) Chair (2) Leg support (3) Support legs (4) Fixed tube (5) Support base (6) Movable tube (7) Gas spring (8) Cylinder (9) Piston rod (10) Valve (10a) Top (11) Taper hole (12) Operation rod (12a) Tip (12b) Rear end (12c) Middle part (12d) Chamfer (13) Mounting bracket (14) Lever (15) Basic support (16) Support base cover (16a) slit (16b) Valve contact piece (16c) Base (17) Seat
Claims (3)
に、支基に上端部が取付けられ、上端面に突出するバル
ブをレバー操作により下方に押し下げることによって、
支基を上下動可能とするガススプリングを備えた座の上
下昇降装置であって、前記バルブの上方に、前記レバー
と連動し、かつ前記バルブから離間した支点を有する操
作杆の先端部を位置させ、さらに前記支基の上方を覆う
合成樹脂製の支基カバーを設け、前記操作杆の先端部下
面が前記バルブの上面に、ガススプリングが作動しない
程度に、常時、当接するように、前記支基カバーの下面
を、前記操作杆の上面に、弾性作用によって圧接させた
ことを特徴とする椅子における座の上下昇降装置。1. A lower end portion is supported in a leg column, an upper end portion is attached to a support base, and a valve protruding to an upper end surface is pushed down by a lever operation,
A vertical lifting device for a seat, comprising a gas spring capable of vertically moving a supporting base, wherein the tip of an operating rod having a fulcrum interlocking with the lever and separated from the valve is located above the valve. Further, a support base cover made of synthetic resin for covering the upper part of the support base is provided, and the lower end of the tip of the operating rod is always in contact with the upper face of the valve so that the gas spring does not operate. A vertical lifting device for a seat in a chair, characterized in that the lower surface of the support base cover is brought into pressure contact with the upper surface of the operating rod by elastic action.
させる部分の周囲に、Ｕ字形のスリットを設けたことを
特徴とする請求項１記載の椅子における座の上下昇降装
置。2. The up / down lifting device for a seat in a chair according to claim 1, wherein a U-shaped slit is provided around a portion of the support base cover that is pressed against the operating rod.
部材を介在させ、支基カバーの下面を、操作杆の上面に
間接的に圧接させたことを特徴とする請求項１または２
記載の椅子における座の上下昇降装置。3. The elastic member is interposed between the supporting base cover and the operating rod, and the lower surface of the supporting base cover is indirectly brought into pressure contact with the upper surface of the operating rod. Two
A device for lifting and lowering a seat in the described chair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001338499A JP4065124B2 (en) | 2001-11-02 | 2001-11-02 | Vertical lift device for seat in chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001338499A JP4065124B2 (en) | 2001-11-02 | 2001-11-02 | Vertical lift device for seat in chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003135192A true JP2003135192A (en) | 2003-05-13 |
| JP4065124B2 JP4065124B2 (en) | 2008-03-19 |
Family
ID=19152986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001338499A Expired - Fee Related JP4065124B2 (en) | 2001-11-02 | 2001-11-02 | Vertical lift device for seat in chair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4065124B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008099837A (en) * | 2006-10-18 | 2008-05-01 | Okamura Corp | Structure for fixing gas-spring operating lever on chair |
-
2001
- 2001-11-02 JP JP2001338499A patent/JP4065124B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008099837A (en) * | 2006-10-18 | 2008-05-01 | Okamura Corp | Structure for fixing gas-spring operating lever on chair |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4065124B2 (en) | 2008-03-19 |
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