JP4402866B2 - Chair seat structure - Google Patents
Chair seat structure Download PDFInfo
- Publication number
- JP4402866B2 JP4402866B2 JP2002213454A JP2002213454A JP4402866B2 JP 4402866 B2 JP4402866 B2 JP 4402866B2 JP 2002213454 A JP2002213454 A JP 2002213454A JP 2002213454 A JP2002213454 A JP 2002213454A JP 4402866 B2 JP4402866 B2 JP 4402866B2
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- JP
- Japan
- Prior art keywords
- frame
- tension
- base frame
- boss
- hole
- 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.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/02—Upholstery attaching means
- A47C31/023—Upholstery attaching means connecting upholstery to frames, e.g. by hooks, clips, snap fasteners, clamping means or the like
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- Furniture Connections (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
Description
【0001】
【発明の属する技術分野】
本発明は、弾性変形可能なネット部材等の張材を張設した椅子の座、すなわち座シートおよび背当ての構造に関する。
【0002】
なお、以下の説明では、本発明を椅子の背当てに適用した場合について説明する。座シートに適用した場合には、以下の説明における前面もしくは表面が上面となることは言うまでもない。
【0003】
【従来の技術】
弾性変形可能なネット部材等の張材の周縁部を、椅子の座シート、もしくは背当てにおける閉結構造の基枠に止着した従来の座構造は、一般に組付けおよび分解を簡単に行うことはできない。
【0004】
そのため、これらの工数の多さが、コスト面に影響しており、また特に、不要となった際における分別処理のための分解の手間と費用の節減が強く求められている。
【0005】
【発明が解決しようとする課題】
本発明は、上記した実情と要求とに鑑み、組立ておよび分解が容易で、特に分別廃棄処理に好都合とした椅子の座構造を提供することを目的とするもので、その具体的手段は次の如くである。
【0006】
【課題を解決するための手段】
(1) 基枠の縁部に、ねじ孔を穿設した、前方を向く複数のボスを突設し、このボスの前面に、外周面に後方が拡開するよう弾性変形しうる傾斜停止片を有する筒状ワッシャーを、ボルトをもって前方より止着し、かつ縁枠における前記ボスと対応する個所に、小径孔を後方とする段孔を穿設した張枠の前面に張材を張設し、これを、基枠の前面から被せ、前記段孔に嵌合されたボスの前面における筒状ワッシャーの傾斜停止片を、段孔の小径孔の前面の段部に係止させることにより、張枠を基枠に、抜止めして組み付け、前記ボルトの頭部の前方に張材が位置するようにする。
【0007】
(2) 上記(1)項において、張枠を基枠に組み付けた際、張枠の外側面を経てその背面に曲げ込まれている張材の周辺部を、基枠をもって張枠の後面に押圧保持させるようにする。
【0008】
(3) 上記(1)または(2)項において、基枠の周縁に、張枠を基枠に組み付けた際、張材における張枠の外周後部における部分を保護するべく、この部分に重合しうる前向フランジを設ける。
【0009】
(4) 上記(1)〜(3)項のいずれかにおいて、張材をネット部材とする。
【0010】
(5) 上記(1)〜(4)項のいずれかにおいて、張材の周縁部に、組立時に基枠と張枠により効果的に挟圧されるための受圧片付き係止片を設ける。
【0011】
【発明の実施の形態】
図1は、本発明を背当て(A)に適用した一実施形態を備える椅子の正面図、図2は、図1におけるII−II線拡大横断面図、図3は、図2の分解図、図4は、ワッシャーの一部破断拡大斜視図、図5は、ワッシャーの正面図、図6は、ワッシャーの平面図である。
なお、本発明は、図1に(B)で示す座シートにも適用しうるものである。
【0012】
まず、図3を参照して、各構成要素について説明する。
【0013】
(1)は、背当て(A)の輪郭に応じた外形を有するやや厚肉の閉結構造の基枠である。基枠(1)の縁杆(2)は、外側方へ向かって後傾し、その内側縁付近には、僅かに前向突出する円柱状の複数のボス(3)が、ほぼ等間隔をもって形成され、各ボス(3)の中心には、前面よりねじ孔(4)が穿設されている。
【0014】
ボス(3)の内側方および外側方は、それぞれ後方凹入する環状凹部(5)(6)とされている。
【0015】
なお、縁杆(2)の外側縁には、前向フランジ(7)が連設されている。前向フランジ(7)の前向突出量については後述する。
【0016】
(8)は、正面形が基枠(1)とほぼ相似形をなす張枠で、外側方へ向かって後傾するその縁枠(9)における前記ボス(3)と対応する個所には、それよりやや大径の小径孔(10a)を有する前後方向の段孔(10)が穿設されている。
【0017】
段孔(10)の内側方および外側方には、それぞれ、基枠(1)の内外の環状凹部(5)(6)内へ嵌入しうる環状突部(11)(12)が形成されている。
【0018】
外側の環状突部(12)の後面には、狭幅の環状溝(13)が設けられている。
【0019】
前記ボス(3)の前向突出量、並びに段孔(10)の深さについては後述する。
【0020】
(14)は、張枠(8)の前面および外周面に沿って張設された、高張力合成樹脂製のネット部材その他適宜の張材で、その外周縁には、後方から張枠(8)の後面の挟支溝(13)内へ挿入係止しうる係止片(15)が止着されている。
【0021】
係止片(15)は、適宜周方向に分断してあるのがよく、かつその後端には、張枠(8)の縁枠(9)の後面に適切に沿接するようにした傾斜受圧片(15a)が形成されている。
【0022】
(16)は、基枠(1)のボス(3)の前面に当接され、かつ段孔(10)の後側の小径孔(10a)へ嵌入しうる筒状ワッシャーで、合成樹脂からなり、かつ周壁には、後方へ向かって拡開する複数の傾斜停止片(17)が設けられている。
【0023】
(18)は、筒状ワッシャー(16)の中心孔(19)を経て、基枠(1)のボス(3)におけるねじ孔(4)へ挿入しうるボルトである。
【0024】
次に組立要領について説明する。
まず、基枠(1)のボス(3)の前面に筒状ワッシャー(16)を当接し、その中心(19)とねじ孔(4)へボルト(18)を挿入して、筒状ワッシャー(16)を固定する。
【0025】
一方、張材(14)を、張枠(8)の前面に当接した後、その周辺部を、縁枠(9)の外周面および後面に沿わせ、外周縁の係止片(15)を、後方から挟支溝(13)内へ挿入係止すると、張材(14)は、所定の張力をもって張設される。
【0026】
ついで、張材(14)が張られている張枠(8)を、基枠(1)へ前方から被せると、段孔(10)の小径孔(10a)は、傾斜停止片(17)を内方へ押しつつ筒状ワッシャー(16)を通過し、ボス(3)へ嵌合する。
【0027】
このようにして、張枠(8)を基枠(1)へ完全に重合し終ると、筒状ワッシャー(16)の傾斜停止片(17)は外向拡開して、段孔(10)の小径孔(10a)の前端の外方を向く段部(10b)に係止し、張枠(8)は抜止め保持される。
【0028】
この際、基枠(1)の縁枠(2)の外側の環状凹部(6)は、傾斜受圧片(15a)を介して、係止片(15)を挟支溝(13)内へ押圧するので、張材(14)の張力は所望に保たれ、張材(14)がたるんだり、その張力が不均一となったりするのが防止される。
【0029】
なお、基枠(1)と張枠(8)を組み付けた際、筒状ワッシャー(16)やボルト(18)の先端が張材(14)に当接することがないように、関係各部の寸法は定められている。
【0030】
またこの際、基枠(1)の周縁における前向フランジ(7)が、縁枠(9)の外側面後部、ひいては張材(14)の周辺の後部に重合して、張材(14)のこの部分が摩滅したり損傷したりするのを防止しうるように、前向フランジ(7)の位置、形状および寸法は定められている。
【0031】
不要時もしくは修理時等には、張材(14)の段孔(10)の前方における部分を、ドライバーもしくは刃物等を突き当てることによって破り、ボルト(18)を抜いて、筒状ワッシャー(16)を外せば、基枠(1)と張枠(8)とを簡単に分離することができる。
【0032】
【発明の効果】
各請求項に記載の発明の効果は、次の通りである。
請求項1:張材が張られている張枠を、基枠に簡単に組み付けたり、取り外したりすることができるので、製造および不要時の分別廃棄等を、簡単に行うことができる。
【0033】
請求項2:張枠に張られている張材がゆるむのが防止される。
【0034】
請求項3:張材における張枠の外周後部における部分の摩滅や損傷が防止される。
【0035】
請求項4:分解時、刃物等を突き当てて張材を破るべき部分を視認することができるので、分解作業を能率的に行うことができる。
【0036】
請求項5:組付時において、張材は、効果的に基枠に押されて、強力に保持される。
【図面の簡単な説明】
【図1】本発明を背当てに適用した一実施形態を備える椅子の正面図である。
【図2】図1におけるII−II線拡大横断面図である。
【図3】図2の分解図である。
【図4】筒状ワッシャーの一部破断拡大斜視図である。
【図5】筒状ワッシャーの正面図である。
【図6】筒状ワッシャーの平面図である。
【符号の説明】
(1)基枠
(2)縁杆
(3)ボス
(4)ねじ孔
(5)(6)環状凹部
(7)前向フランジ
(8)張枠
(9)縁枠
(10)段孔
(10a)小径孔
(10b)段部
(11)(12)環状突部
(13)挟支溝
(14)張材
(15)係止片
(15a)傾斜受圧片
(16)筒状ワッシャー
(17)傾斜停止片
(18)ボルト
(19)中心孔
(A)背当て
(B)座シート[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat of a chair on which a tension member such as an elastically deformable net member is stretched, that is, a seat seat and a backrest.
[0002]
In addition, in the following description, the case where this invention is applied to the backrest of a chair is demonstrated. Needless to say, when applied to a seat, the front surface or surface in the following description is the upper surface.
[0003]
[Prior art]
The conventional seat structure, in which the peripheral edge of a tension member such as an elastically deformable net member is fixed to the seat frame of the chair or the base frame of the closed structure in the backrest, is generally easy to assemble and disassemble. I can't.
[0004]
For this reason, the large number of man-hours has an effect on the cost, and in particular, there is a strong demand for reducing the labor and cost of disassembling for separation processing when it becomes unnecessary.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances and requirements, and is intended to provide a seat structure for a chair that is easy to assemble and disassemble and that is particularly convenient for separation and disposal. That's right.
[0006]
[Means for Solving the Problems]
(1) At the edge of the base frame, a plurality of forwardly facing bosses are provided with screw holes, and an inclined stop piece that can be elastically deformed on the front surface of the boss so that the rear side expands to the outer peripheral surface. A cylindrical washer with a bolt is fixed from the front with a bolt, and a tension member is stretched on the front surface of a tension frame having a step hole with a small-diameter hole at the rear at a position corresponding to the boss in the edge frame. This is covered with the front surface of the base frame, and the slant stop piece of the cylindrical washer on the front surface of the boss fitted in the step hole is engaged with the step portion on the front surface of the small diameter hole of the step hole. a frame base frame, assembled rice retaining, stretched member in front of the head of the bolt you to be positioned.
[0007]
(2) In the above paragraph (1), when the tension frame is assembled to the base frame, the peripheral portion of the tension material bent into the back surface through the outer surface of the tension frame is attached to the rear surface of the tension frame with the base frame. Press and hold.
[0008]
(3) In the above (1) or (2), when the tension frame is assembled to the base frame at the periphery of the base frame, it is superposed on this portion in order to protect the portion at the outer periphery of the tension frame in the tension material. Provide a forward-facing flange.
[0009]
(4) In any one of the above items (1) to (3), the tension member is a net member.
[0010]
(5) In any one of the above items (1) to (4), a locking piece with a pressure receiving piece is provided on the peripheral portion of the tension member so as to be effectively clamped by the base frame and the tension frame at the time of assembly.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 is a front view of a chair including an embodiment in which the present invention is applied to a backrest (A), FIG. 2 is an enlarged cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is an exploded view of FIG. 4 is a partially broken enlarged perspective view of the washer, FIG. 5 is a front view of the washer, and FIG. 6 is a plan view of the washer.
In addition, this invention is applicable also to the seat shown by (B) in FIG.
[0012]
First, each component will be described with reference to FIG.
[0013]
(1) is a base frame of a slightly thick closed structure having an outer shape corresponding to the contour of the backrest (A). The edge frame (2) of the base frame (1) is inclined rearward toward the outer side, and a plurality of cylindrical bosses (3) projecting slightly forward are provided at almost equal intervals in the vicinity of the inner edge. A screw hole (4) is formed in the center of each boss (3) from the front surface.
[0014]
The inner side and the outer side of the boss (3) are respectively annular recesses (5) and (6) that are recessed backward.
[0015]
A forward flange (7) is connected to the outer edge of the rim (2). The forward protrusion amount of the forward flange (7) will be described later.
[0016]
(8) is a tension frame in which the front shape is substantially similar to the base frame (1), and the portion corresponding to the boss (3) in the edge frame (9) tilted backward toward the outside is A step hole (10) in the front-rear direction having a small-diameter hole (10a) having a slightly larger diameter is formed.
[0017]
On the inner side and the outer side of the step hole (10), annular protrusions (11) and (12) that can be fitted into the inner and outer annular recesses (5) and (6) of the base frame (1) are formed. Yes.
[0018]
A narrow annular groove (13) is provided on the rear surface of the outer annular protrusion (12).
[0019]
The forward protrusion amount of the boss (3) and the depth of the step hole (10) will be described later.
[0020]
(14) is a net member made of high-strength synthetic resin or other appropriate tension member that is stretched along the front surface and the outer peripheral surface of the tension frame (8), and the tension frame (8 A locking piece (15) that can be inserted and locked into the pinching groove (13) on the rear surface is fixed.
[0021]
The locking piece (15) may be appropriately divided in the circumferential direction, and at its rear end, an inclined pressure-receiving piece that is appropriately placed along the rear surface of the edge frame (9) of the tension frame (8). (15a) is formed.
[0022]
(16) is a cylindrical washer that is in contact with the front surface of the boss (3) of the base frame (1) and can be inserted into the small-diameter hole (10a) on the rear side of the step hole (10). In addition, the peripheral wall is provided with a plurality of inclined stop pieces (17) that expand rearward.
[0023]
(18) is a bolt that can be inserted into the screw hole (4) in the boss (3) of the base frame (1) through the central hole (19) of the cylindrical washer (16).
[0024]
Next, the assembly procedure will be described.
First, the cylindrical washer (16) is brought into contact with the front surface of the boss (3) of the base frame (1), and the bolt (18) is inserted into the center (19) and the screw hole (4) to form a cylindrical washer ( Secure 16).
[0025]
On the other hand, after the tension member (14) is brought into contact with the front surface of the tension frame (8), its peripheral portion is aligned with the outer peripheral surface and the rear surface of the edge frame (9), and the outer peripheral locking piece (15) Is inserted and locked from behind into the holding groove (13), the tension member (14) is tensioned with a predetermined tension.
[0026]
Next, when the tension frame (8) on which the tension material (14) is stretched is put on the base frame (1) from the front, the small-diameter hole (10a) of the step hole (10) has an inclined stop piece (17). Passing through the tubular washer (16) while pushing inward, it fits into the boss (3).
[0027]
In this way, when the tension frame (8) is completely polymerized to the base frame (1), the inclined stop piece (17) of the cylindrical washer (16) expands outward, and the step hole (10) The tension frame (8) is retained and retained by engaging with a step (10b) facing outward from the front end of the small diameter hole (10a).
[0028]
At this time, the annular recess (6) outside the edge frame (2) of the base frame (1) presses the locking piece (15) into the pinching groove (13) via the inclined pressure receiving piece (15a). Therefore, the tension of the tension member (14) is maintained as desired, and the tension member (14) is prevented from sagging and the tension is not uniform.
[0029]
Note that the dimensions of the relevant parts are such that the tip of the tubular washer (16) or bolt (18) does not come into contact with the tension member (14) when the base frame (1) and the tension frame (8) are assembled. Is defined.
[0030]
At this time, the forward flange (7) at the periphery of the base frame (1) is superposed on the rear part of the outer side surface of the edge frame (9) and eventually the rear part of the periphery of the tension member (14). The position, shape and dimensions of the forward flange (7) are determined so that this part of the can be prevented from being worn or damaged.
[0031]
When not needed or repaired, the portion of the tension member (14) in front of the step hole (10) is torn by hitting it with a screwdriver or blade, etc., the bolt (18) is pulled out, and the cylindrical washer (16 ) Can be easily separated from the base frame (1) and the tension frame (8).
[0032]
【The invention's effect】
The effects of the invention described in each claim are as follows.
Since the tension frame on which the tension material is stretched can be easily assembled to or removed from the base frame, it is possible to easily manufacture and dispose of waste when it is unnecessary.
[0033]
Claim 2: The tension material stretched on the tension frame is prevented from loosening.
[0034]
Claim 3: Wear and damage of the portion of the upholstery at the outer peripheral rear portion of the tension frame are prevented.
[0035]
Claim 4: At the time of disassembling, it is possible to visually recognize the part to be smashed by hitting a blade or the like, so that the disassembling work can be performed efficiently.
[0036]
Claim 5: At the time of assembly, the upholstery material is effectively pushed by the base frame and held strongly.
[Brief description of the drawings]
FIG. 1 is a front view of a chair provided with an embodiment in which the present invention is applied to a backrest.
FIG. 2 is an enlarged cross-sectional view taken along the line II-II in FIG.
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a partially broken enlarged perspective view of a cylindrical washer.
FIG. 5 is a front view of a cylindrical washer.
FIG. 6 is a plan view of a cylindrical washer.
[Explanation of symbols]
(1) Base frame
(2) Relatives
(3) Boss
(4) Screw hole
(5) (6) Annular recess
(7) Forward flange
(8) Tension frame
(9) Edge frame
(10) Step hole
(10a) Small hole
(10b) Step
(11) (12) Annular protrusion
(13) Clamping groove
(14) Upholstery material
(15) Locking piece
(15a) Inclined pressure receiving piece
(16) Cylindrical washer
(17) Tilt stop piece
(18) Bolt
(19) Center hole
(A) Back support
(B) Seat seat
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002213454A JP4402866B2 (en) | 2002-07-23 | 2002-07-23 | Chair seat structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002213454A JP4402866B2 (en) | 2002-07-23 | 2002-07-23 | Chair seat structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004052954A JP2004052954A (en) | 2004-02-19 |
JP4402866B2 true JP4402866B2 (en) | 2010-01-20 |
Family
ID=31936045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002213454A Expired - Fee Related JP4402866B2 (en) | 2002-07-23 | 2002-07-23 | Chair seat structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4402866B2 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP5702530B2 (en) * | 2009-10-30 | 2015-04-15 | 株式会社イトーキ | Backboard unit for chair and backrest |
JP5567821B2 (en) * | 2009-10-30 | 2014-08-06 | 株式会社イトーキ | Chair back |
JP5611567B2 (en) * | 2009-10-30 | 2014-10-22 | 株式会社イトーキ | Chair back |
JP5739612B2 (en) * | 2009-10-30 | 2015-06-24 | 株式会社イトーキ | Chair back |
JP5676094B2 (en) * | 2009-10-30 | 2015-02-25 | 株式会社イトーキ | Backrest and chair with this |
JP5989755B2 (en) * | 2014-12-25 | 2016-09-07 | 株式会社イトーキ | Chair back |
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2002
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