JP2004248839A - Backrest mounting device for chair - Google Patents
Backrest mounting device for chair Download PDFInfo
- Publication number
- JP2004248839A JP2004248839A JP2003041684A JP2003041684A JP2004248839A JP 2004248839 A JP2004248839 A JP 2004248839A JP 2003041684 A JP2003041684 A JP 2003041684A JP 2003041684 A JP2003041684 A JP 2003041684A JP 2004248839 A JP2004248839 A JP 2004248839A
- Authority
- JP
- Japan
- Prior art keywords
- backrest
- chair
- connecting block
- mounting device
- connecting plate
- 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
Images
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、椅子における背凭れの取付装置に関する。
【０００２】
【従来の技術】
従来、座の後方より起立する背杆に背凭れを取り付けた椅子においては、背杆を、背凭れを構成する合成樹脂製のインナーシェルのような背シェルに取り付けている（例えば特許文献１参照）。
【０００３】
【特許文献１】
特許第３１６０５６４号特許公報（図２〜図４、第４〜６欄）
【０００４】
【発明が解決しようとする課題】
しかし、寸法の大きい合成樹脂製の背シェルに、精度を要する嵌合溝や、細かな係止爪等を一体成形により形成することは、金型全体を高精度で仕上げなければならなくなるだけでなく、金型の構造、特に抜き型の構造が複雑となり、高価となる。
【０００５】
本発明は、上述の問題点に鑑み、背シエルを背杆に取り付ける嵌合溝や係止爪等を高精度で、しかも簡単かつ安価に形成することができるようにした、椅子における背凭れの取付装置を提供することを目的としている。
【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） 座の後方より起立する背取付部に背凭れを取り付けた椅子における背凭れの取付装置において、前記背取付部を、左右１対の背杆と、該両背杆の上部同士を連結する連結板とを備えたものするとともに、前記背凭れを、背シェルと、該背シェルのほぼ全体を覆うクッション材と表皮材とを備えるものとし、前記背シェルに、その後面と下面とに開口する凹所を設け、この凹所に、前記背杆と連結板とが下方より嵌合しうるようにした嵌合溝を下面に設けた連結ブロックを後方より嵌合して固着し、かつ前記背杆の上端部と連結板とを、背シェルの下面の開口を通して、前記連結ブロックの嵌合溝に嵌合する。
【０００７】
（２） 上記（１）項において、連結ブロックの後面に左右方向の押さえ板を当接させて、その押さえ板の側端部を、背シェルの後面にねじ止めする。
【０００８】
（３） 上記（１）または（２）項において、連結ブロックの下端に、連結板の下縁に係合して、背杆の上端部及び連結板を嵌合溝から抜け止めするようにした、係止爪を有する係止手段を連結する。
【０００９】
（４） 上記（１）〜（３）項のいずれかにおいて、連結ブロックを可撓性を有する材料により形成するとともに、嵌合溝を、左右１対の背杆が嵌合するようにした貫通孔と、連結板が嵌合するようにした貫通スリットとからなるものとし、前記貫通孔の内径を、背杆の外径よりわずかに小とする。
【００１０】
【発明の実施の形態】
図１は、本発明の一実施形態を備える椅子の一部切欠側面図で、背凭れを取り外した状態で示している。椅子（Ａ）は、放射状をなす４本または５本足とした脚体（１）の中心に立設された脚柱（２）を有し、脚柱（２）の上端には、基枠（３）が固定され、基枠（３）上には、座（４）が取り付けられている。
【００１１】
基枠（３）からは、２本の背杆（５）（図２参照）が後方に延出し、かつ座（４）の後方において上方に立ち上がっている。この平行に延びる２本の背杆（５）に、背凭れ（６）が取り付けられる。本発明は、この背杆（５）と背凭れ（６）との取付構造に関するものである。
【００１２】
図１〜図３に示すように、２本の背杆（５）の、前方に突き出している下部及び前部は、背杆カバー（７）により覆われている。背杆カバー（７）は、図３に破線で示すように、前部では左右の背杆（５）を別々に覆い、後部では上方への屈曲部において左右が一体化され、２本の背杆（５）を大きく覆っている。この上方への屈曲部では、前縁部（７ａ）が上方に短く突き出ており（図２）、この前縁部（７ａ）に、後述する背凭れ下部カバー（２２）の切欠部（２３ａ）が嵌合するようになっている。
【００１３】
また、２本の平行な背杆（５）の上部には、左右方向を向く矩形の連結板（８）の各端部が溶接されている。この連結板（５）の下方にも、両背杆（５）を連結する部材が示されているが、この部材と連結板（５）との間には、少なくとも若干の隙間（８ａ）が形成されている。
【００１４】
背凭れ（６）は、硬質合成樹脂材の一体成型品である背シェル（９）と、その前面を覆う発泡ポリウレタンのようなクッション材（１０）と、クッション材（１０）を覆うレザーのような表皮材（１１）とからなっている。
【００１５】
背シェル（９）の下端には、クッション材（１０）の前端付近まで前方に延びる平らな取付片（１２）（図２参照）が形成されており、また下部中央には、その後面と下面（取付片（１２）を貫いて）とに開口する矩形の凹所（１３）が形成されている。すなわち、背凭れ（６）の下面中央部には、開口（１３ａ）（図５参照）が形成されている。凹所（１３）の断面形状は、図１、図３、図５、及び図６によく示されている。
【００１６】
凹所（１３）内には、図４に拡大して示すような連結ブロック（１４）が収容されている。この連結ブロック（１４）は、可撓性を有する硬質合成樹脂材の一体成型品であって、これを構成する直方体状のブロック部（１４ａ）には、前述の２本の背杆（５）に対応する位置に、これらを挿通させる２個の上下方向の貫通孔（１５ａ）と、同様に連結板（８）に対応する位置に、これを挿通させる上下方向の貫通スリット（１５ｂ）とからなる嵌合溝（１５）が穿設されている。
【００１７】
各貫通孔（１５ａ）の内面には、図４に示すような上下方向を向く複数のリブを設けるのが好ましく、また各貫通孔（１５ａ）の内径、より詳しくは、各リブの先端面を結ぶ内接円の直径は、背杆（５）の外径よりわずかに小としておくのが好ましい。
そうすることによって、各貫通孔（１５ａ）に背杆（５）を嵌合したとき、貫通スリット（１５ｂ）の幅がわずかに拡がり、かつ各貫通孔（１５ａ）の内径が背杆（５）の外径に一致するように、ブロック部（１４ａ）が弾性変形して、背杆（５）が各貫通孔（１５ａ）の内面に密着し、背杆（５）とブロック部（１４ａ）とのがたつきを防止しうるとともに、背杆（５）と貫通孔（１５ａ）との寸法誤差を吸収することができる。
なお、この例では、背杆（５）と貫通孔（１５ａ）との断面形状を円形としてあるが、方形またはその他の形状とすることもできる。
【００１８】
また、連結ブロック（１４）におけるブロック部（１４ａ）の下端後部からは、板状の延長部（１４ｂ）が下方に向かって延出しており、この延長部（１４ｂ）の前面の左右方向の中央には、ある程度の左右方向の幅を有する弾性撓曲片（１６）が、前方斜め下向きに突出している。
【００１９】
弾性撓曲片（１６）の左右両端部には、前方に向かって突出する左右１対の係止爪（１７）（１７）が形成されている。前方を向く各係止爪（１７）の先端は鋭く尖っており、かつその上面（１７ａ）は、ほぼ水平をなしている。
【００２０】
弾性撓曲片（１６）における左右１対の係止爪（１７）（１７）の間の部分には、弾性撓曲片（１６）の根元の部分に向かって切欠き（１６ａ）が形成されている（図４参照）。
【００２１】
さらに、延長部（１４ｂ）の前面における上記２個の係止爪（１７）（１７）の両脇下方には、２個の側面視三角形状のガイド片（１８）（１８）が前方に向かって突出している。両ガイド片（１８）（１８）は、背凭れ（６）を背杆（５）に挿入する際、連結板（８）を案内して、これを係止爪（１７）の下部傾斜面に当てて、この係止爪（１７）及び弾性撓曲片（１６）を弾性的に後方に移動させるための手段である。換言すると、両ガイド片（１８）（１８）は、連結板（８）が弾性撓曲片（１６）の後方へ潜入するのを防止するためのものでもある。
【００２２】
図２、図３、図５、及び図６には、押さえ板（１９）が示されている。この押さえ板（１９）は、横長の矩形をなす板で、背シェル（９）の空所（１２）にはめ込んだ連結ブロック（１４）のブロック（１４ａ）の後側に当てられ、左右両側端部に穿設した取付孔（１９ａ）にねじ（２０）を挿入して、背シェル（９）の後面に穿設されたねじ孔（２１）に螺合することにより、連結ブロック（１４）を背シェル（９）に強固に固定している。
【００２３】
図２及び図３に示すように、背凭れ下部カバー（２２）は、硬質合成樹脂材の一体成型品で、その上面は、背シェル（９）の下端の取付片（１２）の輪郭にほぼ合致する輪郭を有し、その前面には、左右方向中央に前方と下方とが開口する切欠部（２３ａ）が形成され、下面は、上面の輪郭よりも左右方向の幅が短く、前述の背杆カバー（７）の上端の輪郭にほぼ合致する輪郭を有するとともに、内部には、２本の背杆（５）とその連結板（８）とを、余裕をもって挿通させうる開口（２３）が形成されている。背凭れ下部カバー（２２）は、下面の輪郭部より左右方向にはみ出したところで、ねじ（２４）により背シェル（９）の取付片（１２）に取り付けられている。
【００２４】
背凭れ（６）を取り付ける工程を説明すると、次のとおりである。
まず、図３に示す背凭れ（６）の背シェル（９）の後面に形成された凹所（１３）の中に連結ブロック（１４）を嵌合させ、押さえ板（１９）をその背後から背シェル（９）の後面にねじ（２０）により止め付けて固定する。
【００２５】
これとは別に、図１に示すように、背凭れ下部カバー（２２）を、連結板（８）により連結された左右の背杆（５）（５）の上から差し込んで、背杆カバー（７）の上端に載せる。
【００２６】
ついで、連結板（８）及び背杆（５）（５）の上から、背凭れ（６）の下端の取付板（１２）の開口（１３ａ）を差し入れる。連結板（８）の上端は、ガイド片（１８）の下部傾斜面に当接して、前方にそらされ、係止片（１７）の下部傾斜面に向かう。係止片（１７）の下部傾斜面に至ると、係止片（１７）を後方に押し、弾性撓曲片（１６）を後方に撓めながら、なおも上昇する。この状態を図５に示す。
【００２７】
背杆（５）（５）及び連結板（８）が嵌合溝（１５）に嵌合された後、連結板（８）の下端が係止爪（１７）を乗り越えると、直ちに係止爪（１７）が、連結板（８）の直下の隙間（８ａ）に入って、連結板（８）の下端に係合し、背杆（５）に、連結ブロック（１４）、背シェル（９）、結果的には背凭れ（６）が固定される。この状態を図６に示す。
【００２８】
最後に、ねじ（２４）により背凭れ下部カバー（２２）を背シェル（９）に固定する。
【００２９】
背凭れ（６）の取り外しに当たっては、ねじ（２４）を外して、背凭れ下部カバー（２２）を若干後方にずらし、そのときに、背杆カバー（７）の後端と背凭れ下部カバー（２２）の開口（２３）の後縁との間に形成される隙間に、図６に想像線により示すように、ドライバー等の尖先工具（２５）を差し入れ、その先端を、両係止爪（１７）（１７）間における連結板（８）と弾性撓曲片（１６）との間の隙間（１６ａ）に押し込む。すると、弾性撓曲片（１６）が後方に撓んで、係止爪（１７）が連結板（８）の下端から外れるので、背凭れ（６）を引き抜くことができる。
【００３０】
【発明の効果】
請求項１記載の発明によれば、寸法の大きい背シェルに、背杆への取付構造を一体的に形成するのではなく、背シェルと、背杆への取付構造を形成した連結ブロックとに分けて形成できるので、小寸法の連結ブロックに精度の高い嵌合溝や係止爪等を簡単に形成することができ、また、金型等の構造を簡素化できるとともに、組み付けが容易で、結果的に製造コストを低減できる。
【００３１】
請求項２記載の発明によれば、連結ブロックを容易に背シェルに固定することができる。
【００３２】
請求項３記載の発明によれば、簡単な構成で、連結ブロック、したがって背凭れを、背杆に確実に係止させることができる。
【００３３】
請求項４記載の発明によれば、各貫通孔に背杆を嵌合したとき、貫通スリットの幅がわずかに拡がり、かつ各貫通孔の内径が背杆の外径に一致するように、連結ブロックが弾性変形して、背杆が各貫通孔の内面に密着し、背杆と連結ブロックとのがたつきを防止しうるとともに、背杆と貫通孔との寸法誤差等を吸収することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態を備える椅子における、背凭れを背杆に取り付ける寸前の状態を示す、一部切欠側面図である。
【図２】同じく、一部を破断して示す分解斜視図である。
【図３】同じく、一部を破断して後方より見た分解斜視図である。
【図４】同じく、連結ブロックの拡大斜視図である。
【図５】同じく、背凭れを背杆に挿入している途中の状態を示す、取付装置付近の拡大縦断側面図である。
【図６】同じく、背凭れを背杆に挿入し終わった状態を示す、取付装置付近の拡大縦断側面図である。
【符号の説明】
（Ａ）椅子
（１）脚体
（２）脚柱
（３）基枠
（４）座
（５）背杆
（６）背凭れ
（７）背杆カバー
（７ａ）前縁部
（８）連結板
（８ａ）隙間
（９）背シェル
（１０）クッション材
（１１）表皮材
（１２）取付片
（１３）凹所
（１３ａ）開口
（１４）連結ブロック
（１４ａ）ブロック部
（１４ｂ）延長部
（１５）嵌合溝
（１５ａ）貫通孔
（１５ｂ）貫通スリット
（１６）弾性撓曲片
（１６ａ）隙間
（１７）係止爪
（１７ａ）上面
（１８）ガイド片
（１９）押さえ板
（１９ａ）取付孔
（２０）ねじ
（２１）ねじ孔
（２２）背凭れ下部カバー
（２３）開口
（２３ａ）切欠部
（２４）ねじ
（２５）尖先工具[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for mounting a backrest in a chair.
[0002]
[Prior art]
Conventionally, in a chair in which a backrest is attached to a backrest that stands up from the back of a seat, the backrest is attached to a backshell such as a synthetic resin inner shell that constitutes the backrest (for example, see Patent Document 1). ).
[0003]
[Patent Document 1]
Japanese Patent No. 3160564 (FIGS. 2 to 4, columns 4 to 6)
[0004]
[Problems to be solved by the invention]
However, forming a fitting groove that requires precision, a fine locking claw, etc. by integral molding in a synthetic resin back shell with large dimensions simply requires finishing the entire mold with high precision. In addition, the structure of the mold, especially the structure of the punching die, becomes complicated and expensive.
[0005]
The present invention has been made in view of the above-described problems, and has been made in view of the above problem. It is intended to provide a mounting device.
[0006]
[Means for Solving the Problems]
According to the present invention, the above-mentioned problem is solved as follows.
(1) In a device for mounting a backrest in a chair in which a backrest is mounted on a back mounting portion rising from the rear of the seat, the back mounting portion connects a pair of right and left back bars and upper portions of both back bars. A back plate, a back shell, a cushion material and a skin material that cover substantially the entire back shell, and the back shell has a back surface and a bottom surface. An opening recess is provided, and a connection block provided on the lower surface thereof with a fitting groove in which the back rod and the connection plate can be fitted from below is fitted and fixed to the recess from behind, and The upper end of the back rod and the connecting plate are fitted into the fitting groove of the connecting block through an opening in the lower surface of the back shell.
[0007]
(2) In the above item (1), the pressing plate in the left-right direction is brought into contact with the rear surface of the connecting block, and the side end of the pressing plate is screwed to the rear surface of the back shell.
[0008]
(3) In the above item (1) or (2), the lower end of the connecting block is engaged with the lower edge of the connecting plate to prevent the upper end of the back rod and the connecting plate from falling out of the fitting groove. And locking means having locking claws are connected.
[0009]
(4) In any one of the above items (1) to (3), the connection block is formed of a flexible material, and the fitting groove is formed so that a pair of right and left back bars is fitted. It comprises a hole and a through slit into which the connecting plate is fitted. The inside diameter of the through hole is slightly smaller than the outside diameter of the back rod.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a partially cutaway side view of a chair provided with an embodiment of the present invention, with a backrest removed. The chair (A) has a pillar (2) erected at the center of a radially shaped four or five-legged leg (1), and a base frame is provided at an upper end of the pillar (2). (3) is fixed, and a seat (4) is mounted on the base frame (3).
[0011]
From the base frame (3), two back rods (5) (see FIG. 2) extend rearward and rise upward behind the seat (4). A backrest (6) is attached to the two back bars (5) extending in parallel. The present invention relates to a mounting structure of the back rod (5) and the backrest (6).
[0012]
As shown in FIGS. 1 to 3, the lower and front portions of the two back bars (5) projecting forward are covered with a back bar cover (7). The back bar cover (7) separately covers the left and right back bars (5) at the front, and the left and right are integrated at the upward bent portion at the rear, as shown by the broken lines in FIG. It largely covers the rod (5). In the upward bent portion, the front edge (7a) protrudes short upward (FIG. 2), and the front edge (7a) has a notch (23a) of the backrest lower cover (22) described later. Are fitted.
[0013]
Each end of a rectangular connecting plate (8) facing left and right is welded to the upper part of the two parallel back bars (5). A member connecting the two back bars (5) is also shown below the connecting plate (5), but at least a slight gap (8a) is provided between the member and the connecting plate (5). Is formed.
[0014]
The backrest (6) has a back shell (9) which is an integrally molded product of a hard synthetic resin material, a cushion material (10) such as foamed polyurethane covering the front surface thereof, and a leather covering the cushion material (10). And a skin material (11).
[0015]
At the lower end of the back shell (9), a flat mounting piece (12) (see FIG. 2) extending forward to near the front end of the cushioning material (10) is formed. (Through the mounting piece (12)), a rectangular recess (13) is formed which opens to it. That is, an opening (13a) (see FIG. 5) is formed in the center of the lower surface of the backrest (6). The cross-sectional shape of the recess (13) is well shown in FIGS. 1, 3, 5, and 6.
[0016]
In the recess (13), a connecting block (14) as shown in an enlarged manner in FIG. 4 is accommodated. The connecting block (14) is an integrally molded product of a hard synthetic resin material having flexibility, and a rectangular parallelepiped block (14a) constituting the connecting block (14) is provided with the above-mentioned two back rods (5). And two vertical through holes (15a) through which these are inserted, and a vertical through slit (15b) through which these are inserted at positions corresponding to the connecting plate (8). Fitting groove (15) is formed.
[0017]
It is preferable to provide a plurality of ribs extending in the vertical direction as shown in FIG. 4 on the inner surface of each through hole (15a). Also, the inner diameter of each through hole (15a), more specifically, the tip surface of each rib is preferably It is preferable that the diameter of the inscribed circle to be connected is slightly smaller than the outer diameter of the back rod (5).
By doing so, when the back rod (5) is fitted into each through hole (15a), the width of the through slit (15b) is slightly widened, and the inner diameter of each through hole (15a) is increased. The block (14a) is elastically deformed so as to match the outer diameter of the back rod (5), and the back rod (5) comes into close contact with the inner surface of each through hole (15a). It is possible to prevent rattling and to absorb a dimensional error between the back rod (5) and the through hole (15a).
In this example, the cross-sectional shape of the back rod (5) and the through hole (15a) is circular, but it may be square or another shape.
[0018]
A plate-like extension (14b) extends downward from the rear end of the lower end of the block (14a) of the connecting block (14), and the front of the extension (14b) has a center in the left-right direction. , An elastic bending piece (16) having a certain width in the left-right direction projects obliquely downward and forward.
[0019]
A pair of left and right locking claws (17) (17) projecting forward is formed at both left and right end portions of the elastic bending piece (16). The tip of each locking claw (17) facing forward is sharply pointed, and its upper surface (17a) is substantially horizontal.
[0020]
A notch (16a) is formed in a portion between the pair of left and right locking claws (17) and (17) of the elastic bending piece (16) toward the root of the elastic bending piece (16). (See FIG. 4).
[0021]
Further, two guide pieces (18) and (18) having a triangular shape in a side view are directed forward on both sides below the two locking claws (17) and (17) on the front surface of the extension part (14b). Protruding. The guide pieces (18) and (18) guide the connecting plate (8) when inserting the backrest (6) into the back rod (5), and guide the connecting plate (8) to the lower inclined surface of the locking claw (17). This is a means for elastically moving the locking claw (17) and the elastic bending piece (16) rearward. In other words, the two guide pieces (18) and (18) are also for preventing the connecting plate (8) from infiltrating behind the elastic bending piece (16).
[0022]
FIGS. 2, 3, 5, and 6 show the holding plate (19). The holding plate (19) is a horizontally long rectangular plate and is applied to the rear side of the block (14a) of the connecting block (14) fitted in the space (12) of the back shell (9). By inserting a screw (20) into a mounting hole (19a) drilled in the part and screwing it into a screw hole (21) drilled in the rear surface of the back shell (9), the connection block (14) is connected. It is firmly fixed to the back shell (9).
[0023]
As shown in FIGS. 2 and 3, the backrest lower cover (22) is an integrally molded product of a hard synthetic resin material, and the upper surface thereof substantially conforms to the contour of the mounting piece (12) at the lower end of the backshell (9). A notch (23a) having a front and a bottom opening at the center in the left-right direction is formed on the front surface, and the width of the lower surface is shorter than that of the upper surface in the left-right direction. An opening (23) having a contour substantially matching the contour of the upper end of the rod cover (7) and allowing the two back rods (5) and the connecting plate (8) to pass therethrough with a margin. Is formed. The backrest lower cover (22) is attached to the attachment piece (12) of the backshell (9) by a screw (24) when it protrudes in the left-right direction from the contour of the lower surface.
[0024]
The step of attaching the backrest (6) will be described as follows.
First, the connecting block (14) is fitted into a recess (13) formed on the back surface of the back shell (9) of the backrest (6) shown in FIG. 3, and the holding plate (19) is moved from behind. The rear shell (9) is fastened and fixed to the rear surface with screws (20).
[0025]
Separately, as shown in FIG. 1, the backrest lower cover (22) is inserted from above the left and right back bars (5) and (5) connected by the connection plate (8), and the back bar cover (22) is inserted. Place on top of 7).
[0026]
Next, the opening (13a) of the mounting plate (12) at the lower end of the backrest (6) is inserted from above the connecting plate (8) and the back rods (5) and (5). The upper end of the connecting plate (8) comes into contact with the lower inclined surface of the guide piece (18), is deflected forward, and heads toward the lower inclined surface of the locking piece (17). When the locking piece (17) reaches the lower inclined surface, the locking piece (17) is pushed backward, and the elastic bending piece (16) is further raised while being bent backward. This state is shown in FIG.
[0027]
After the back rods (5) and (5) and the connecting plate (8) have been fitted into the fitting grooves (15), as soon as the lower end of the connecting plate (8) gets over the locking claw (17), the locking claw is engaged. (17) enters the gap (8a) immediately below the connecting plate (8), engages with the lower end of the connecting plate (8), and is connected to the back rod (5) by the connecting block (14) and the back shell (9). ), And as a result, the backrest (6) is fixed. This state is shown in FIG.
[0028]
Finally, the backrest lower cover (22) is fixed to the back shell (9) with the screw (24).
[0029]
When removing the backrest (6), the screw (24) is removed, and the lower backrest cover (22) is slightly shifted backward. At this time, the rear end of the back rod cover (7) and the lower backrest cover ( As shown by an imaginary line in FIG. 6, a pointed tool (25) such as a screwdriver is inserted into a gap formed between the rear edge of the opening (23) of the opening 22), and the tip of the tool is inserted into both locking claws. (17) It is pushed into the gap (16a) between the connecting plate (8) and the elastic bending piece (16) between (17). Then, the elastic bending piece (16) bends backward and the locking claw (17) comes off the lower end of the connecting plate (8), so that the backrest (6) can be pulled out.
[0030]
【The invention's effect】
According to the first aspect of the present invention, instead of integrally forming the attachment structure to the back rod with the back shell having a large size, the back shell and the connecting block having the attachment structure to the back rod are formed. Since it can be formed separately, high-precision fitting grooves and locking claws can be easily formed in a small-sized connecting block.In addition, the structure of a mold and the like can be simplified, and assembly is easy. As a result, manufacturing costs can be reduced.
[0031]
According to the invention described in
[0032]
According to the third aspect of the present invention, the connecting block and thus the backrest can be securely locked to the back bar with a simple structure.
[0033]
According to the fourth aspect of the present invention, when the back rod is fitted into each through hole, the width of the through slit is slightly widened, and the inner diameter of each through hole is matched with the outer diameter of the back rod. The block is elastically deformed, and the back rod is in close contact with the inner surface of each through hole, which can prevent rattling between the back rod and the connection block and absorbs dimensional errors between the back rod and the through hole. it can.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view showing a state immediately before a backrest is attached to a back bar in a chair provided with an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing a part of the same.
FIG. 3 is an exploded perspective view showing a rear view with a part cut away.
FIG. 4 is an enlarged perspective view of the connection block.
FIG. 5 is an enlarged vertical sectional side view of the vicinity of the mounting device, showing a state in which the backrest is being inserted into the back bar.
FIG. 6 is an enlarged vertical sectional side view of the vicinity of the mounting device, similarly showing a state in which the backrest has been inserted into the back bar.
[Explanation of symbols]
(A) Chair (1) Leg (2) Pillar (3) Base frame (4) Seat (5) Back bar (6) Back rest (7) Back bar cover (7a) Front edge (8) Connecting plate (8a) gap (9) back shell (10) cushion material (11) skin material (12) mounting piece (13) recess (13a) opening (14) connecting block (14a) block part (14b) extension part (15) ) Fitting groove (15a) Through hole (15b) Through slit (16) Elastic bending piece (16a) Gap (17) Locking claw (17a) Upper surface (18) Guide piece (19) Holding plate (19a) Mounting hole (20) Screw (21) Screw hole (22) Backrest lower cover (23) Opening (23a) Notch (24) Screw (25) Tip tool
Claims (4)
前記背取付部を、左右１対の背杆と、該両背杆の上部同士を連結する連結板とを備えたものするとともに、前記背凭れを、背シェルと、該背シェルのほぼ全体を覆うクッション材と表皮材とを備えるものとし、前記背シェルに、その後面と下面とに開口する凹所を設け、この凹所に、前記背杆と連結板とが下方より嵌合しうるようにした嵌合溝を下面に設けた連結ブロックを後方より嵌合して固着し、かつ前記背杆の上端部と連結板とを、背シェルの下面の開口を通して、前記連結ブロックの嵌合溝に嵌合したことを特徴とする椅子における背凭れの取付装置。In a backrest mounting device in a chair in which a backrest is mounted on a back mounting portion standing from the rear of the seat,
The back mounting portion includes a pair of right and left back bars and a connecting plate for connecting upper portions of the both back bars, and the backrest, a back shell, and substantially the entire back shell. The back shell is provided with a cushioning material and a covering material, and the back shell is provided with a recess opening on the rear surface and the lower surface, and the back rod and the connection plate can be fitted into the recess from below. A connecting block provided with a fitting groove formed on the lower surface is fitted and fixed from the rear, and the upper end of the back rod and the connecting plate are passed through an opening in the lower surface of the back shell to fit the fitting groove of the connecting block. A backrest mounting device for a chair, wherein the backrest is mounted on a chair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003041684A JP4220265B2 (en) | 2003-02-19 | 2003-02-19 | Mounting device for backrest in chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003041684A JP4220265B2 (en) | 2003-02-19 | 2003-02-19 | Mounting device for backrest in chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004248839A true JP2004248839A (en) | 2004-09-09 |
| JP4220265B2 JP4220265B2 (en) | 2009-02-04 |
Family
ID=33025196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003041684A Expired - Fee Related JP4220265B2 (en) | 2003-02-19 | 2003-02-19 | Mounting device for backrest in chair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4220265B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008161443A (en) * | 2006-12-28 | 2008-07-17 | Okamura Corp | Backrest mounting device in chair |
| WO2009057579A1 (en) | 2007-11-02 | 2009-05-07 | Okamura Corporation | Backrest of chair and its fixing device |
| JP2009172125A (en) * | 2008-01-24 | 2009-08-06 | Okamura Corp | Fixing device of backrest of chair |
| JP2010004946A (en) * | 2008-06-24 | 2010-01-14 | Okamura Corp | Chair |
| JP2010094277A (en) * | 2008-10-16 | 2010-04-30 | Okamura Corp | Chair |
| JP2013094290A (en) * | 2011-10-28 | 2013-05-20 | Okamura Corp | Chair |
| JP2015217046A (en) * | 2014-05-15 | 2015-12-07 | 株式会社岡村製作所 | Chair and chair assembling method |
| JP2016104360A (en) * | 2016-03-07 | 2016-06-09 | 株式会社岡村製作所 | Backrest of chair and chair including the same |
| CN105747644A (en) * | 2016-02-05 | 2016-07-13 | 宁波大学 | Chair with telescopic waist pad |
-
2003
- 2003-02-19 JP JP2003041684A patent/JP4220265B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008161443A (en) * | 2006-12-28 | 2008-07-17 | Okamura Corp | Backrest mounting device in chair |
| EP2215931A4 (en) * | 2007-11-02 | 2011-04-13 | Okamura Corp | Backrest of chair and its fixing device |
| WO2009057579A1 (en) | 2007-11-02 | 2009-05-07 | Okamura Corporation | Backrest of chair and its fixing device |
| US8251454B2 (en) | 2007-11-02 | 2012-08-28 | Okamura Corporation | Backrest of the chair and adaptation device for the same |
| EP2215931A1 (en) * | 2007-11-02 | 2010-08-11 | Okamura Corporation | Backrest of chair and its fixing device |
| CN101835408A (en) * | 2007-11-02 | 2010-09-15 | 株式会社冈村制作所 | Backrest of chair and its fixing device |
| JP2009172125A (en) * | 2008-01-24 | 2009-08-06 | Okamura Corp | Fixing device of backrest of chair |
| JP2010004946A (en) * | 2008-06-24 | 2010-01-14 | Okamura Corp | Chair |
| JP2010094277A (en) * | 2008-10-16 | 2010-04-30 | Okamura Corp | Chair |
| JP2013094290A (en) * | 2011-10-28 | 2013-05-20 | Okamura Corp | Chair |
| JP2015217046A (en) * | 2014-05-15 | 2015-12-07 | 株式会社岡村製作所 | Chair and chair assembling method |
| CN105747644A (en) * | 2016-02-05 | 2016-07-13 | 宁波大学 | Chair with telescopic waist pad |
| JP2016104360A (en) * | 2016-03-07 | 2016-06-09 | 株式会社岡村製作所 | Backrest of chair and chair including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4220265B2 (en) | 2009-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102458792B1 (en) | Apparatus for fastening of vehicle license plate | |
| JP2011522735A (en) | Steering wheel unit | |
| JP2004248839A (en) | Backrest mounting device for chair | |
| JP2010064639A (en) | Buckle storage structure for seat belt | |
| US6742653B2 (en) | Tool suspension device | |
| US20130313839A1 (en) | Front vehicle body structure | |
| JP5148774B1 (en) | Wire holder mounting structure and display device | |
| JP4202783B2 (en) | Mounting device for backrest in chair | |
| JP5068525B2 (en) | Mounting device for back plate in chair | |
| JP2009172125A (en) | Fixing device of backrest of chair | |
| JP2006045953A (en) | Door handle device | |
| JP4202784B2 (en) | Chair backrest device | |
| GB2344085A (en) | Attachment structure between a vehicle bumper and grille | |
| JP3118676U (en) | Mounting device and flat display using the mounting device | |
| JP6651625B2 (en) | Seat back frame and vehicle seat using the same | |
| JP2013028205A (en) | Assembling structure of interior trim material for vehicle | |
| JP4296884B2 (en) | EA material mounting structure | |
| JP4485488B2 (en) | Shelf holder | |
| CN110176736B (en) | Board for distributing implement | |
| JP4174938B2 (en) | Shelf mounting structure | |
| JP2007181489A (en) | Backrest device for chair | |
| JP4279411B2 (en) | Connecting structure of shelf board and shelf bracket | |
| JP4771165B2 (en) | Mold for molded product with mounting seat and molded product with mounting seat | |
| JPH1016556A (en) | Impact absorbing structure of trim for vehicle | |
| JP6712533B2 (en) | Fixture and wiring connection unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060216 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080612 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080624 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080821 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20081111 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20081113 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111121 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121121 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121121 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131121 Year of fee payment: 5 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |