JP4855583B2

JP4855583B2 - Chair

Info

Publication number: JP4855583B2
Application number: JP2001051772A
Authority: JP
Inventors: 昇永石
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2001-02-27
Filing date: 2001-02-27
Publication date: 2012-01-18
Anticipated expiration: 2021-02-27
Also published as: JP2002248027A

Description

【０００１】
【発明の属する技術分野】
本発明は、座板と背当て板との高さと奥行が変えられるようにした椅子に関する。
【０００２】
【従来の技術】
従来の学習机用の椅子には、天板の高さが調節できない机用のものとして、座板と足置板との高さを調節できるようにしたものと、天板の高さ調節可能な机用のものとして、座板と背当て板との高さを調節できるようにしたものがある。
【０００３】
【発明が解決しようとする課題】
着座者が子供と大人とのように極端に違う場合には、座板や背当て板等の高さだけでなく、座板の前端から背当て板までの奥行も変更可能とすることが好ましい。
【０００４】
しかし、座板や背当て板等を、高さだけでなく、前後方向の位置も調節できるようにするには、それらの調節機構が複雑化し、製造コストの増大をもたらす。
【０００５】
本発明は、従来の技術が有する上記のような問題点に鑑み、着座者の成長に合わせて、座板や背当て板の高さを変更できるだけでなく、着座部の奥行きも適切に変更でき、しかも構造が簡単で、機能的かつ漸新な外観を呈することができるようにした椅子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)前縁が後傾する側面視三角形状の左右１対の側板における前後部に、前後に対応する複数個ずつの取付孔を、前部のものは側板の前縁に沿って、また後部のものは側板の後縁に沿ってそれぞれ並べて穿設し、前後に対応する任意の取付孔に挿通した前後の支軸のいずれか一方を、座板の側面に設けた軸孔に嵌合し、他方の支軸を、座板の側面に設けた前後方向を向く長孔に摺動自在に嵌合することにより、左右の側板間に、座板を高さ変更可能として取り付けるとともに、両側板に、複数の取付孔を、前記側板の前縁とほぼ平行な傾斜線に沿って並ぶようにして穿設し、任意の取付孔に挿通した支軸をもって、背当て板の両側端を支持することにより、背当て板を、前記傾斜線に沿って、高さと前後位置とを変更可能として取り付ける。
【０００７】
(２) 上記(１)項において、両側板の内側面における各取付孔から同方向の等距離の位置に凹部をそれぞれ設け、いずれかの凹部に、背当て板の両側端面に突設した突起が嵌合しうるようにする。
【０００８】
(３) 上記(１)または(２)項において、支軸をボルトとし、背当て板または座板に、前記ボルトが螺合するナットを設ける。
【００１０】
【発明の実施の形態】
以下、本発明の一実施形態を、添付図面を参照して説明する。
【００１１】
図１に示すように、本発明の椅子は、前縁が後傾する側面視ほぼ直角三角形状の左右１対の側板(１)(１)を備えている。
【００１２】
各側板(１)は、前後方向を向く脚杆(２)の前後部に、後傾する傾斜杆(３)と、ほぼ真上を向き、上端部が傾斜杆(３)の上端部後下縁に結合された後部支杆(４)とを立設したものよりなっている。なお、側板(１)を、後下部が直角をなす１枚の板材により形成することもできる。
【００１３】
左右の側板(１)(１)同士は、傾斜杆(３)の前下端部同士、同じく後上端部同士、及び後部支杆(４)の下端部同士の間に、左右方向を向く水平の連結杆(５)を挟んで、両側板(１)(１)の外側方から止めねじ(６)をもってねじ止めすることにより、互いに連結されている。
【００１４】
各脚杆(２)の後端部下面に形成した凹部(７)内にはキャスタ(８)が、また各脚杆(２)の前端部下面には、下方に向かって突出する接床部材(９)(図４及び図６参照)がそれぞれ設けられている。
【００１５】
左右の両側板(１)(１)における傾斜杆(３)の下半部と後部支杆(４)の下半部とには、前後に対応する複数個ずつの取付孔(10)(11)が、前部のものは傾斜杆(３)の前縁に沿って、また後部のものは後部支杆(４)の後縁に沿って、すなわち垂直に、それぞれほぼ等間隔で並ぶようにして穿設されている。
【００１６】
左右の幅を左右の側板(１)(１)間の間隔とほぼ等しくした座板(12)の下面側部には、側片(13)(13)が固着され、図２に示すように、両側片(13)(13)の後端部には、鍔付きナット(14)が外向きに貫設され、両側片(13)(13)のほぼ前半部には、前後方向を向く長孔(15)が穿設され、各長孔(15)には、鍔付きナット(16)が前後方向に摺動自在に嵌合されている。
【００１７】
座板(12)は、両側板(１)(１)の外側から前後に対応する任意の取付孔(10)(11)に挿通した支軸をなす皿ボルト(17)を、上記の各鍔付きナット(14)(16)にそれぞれ螺合することにより、段階的ではあるが、両側板(１)(１)間の任意の高さに強固に取り付けることができる。
【００１８】
各高さにおける前後の取付孔(10)(11)間の距離の相違は、前方の取付孔(10)を挿通する皿ボルト(17)が螺合する鍔付きナット(16)が、長孔(15)内を摺動することによって吸収される。
【００１９】
各傾斜杆(３)のほぼ上半部には、複数の取付孔(18)が、ほぼ傾斜杆(３)の前縁に沿って等間隔で並ぶようにして(この例においては、傾斜杆(３)の前縁より若干大きな上向き傾斜角の傾斜線(Ｌ)に沿ってほぼ等間隔で並ぶようにして)穿設されている。
【００２０】
また、各傾斜杆(３)のほぼ上半部の内面には、各取付孔(18)から前下方の同方向の等距離の位置に、いわゆるダボ孔をなす凹部(19)がそれぞれ設けられている。
【００２１】
背当て板(20)の両側端の上下部には、植込みナット(21)と、いわゆるダボピンをなす突起(22)とが設けられており、背当て板(20)は、左右の突起(22)を、等高をなす任意の凹部(19)に嵌合した状態で、その凹部(19)に対応するほぼ直上の取付孔(18)に、支軸をなす皿ボルト(23)を両側板(１)(１)の外側から挿通し、その皿ボルト(23)を植込みナット(21)に螺合して締め付けることにより、段階的ではあるが、両側板(１)(１)間の任意の高さに強固に取り付けることができる。
【００２２】
しかも、背当て板(20)は、上位に取り付けるほど後方に位置し、座板(12)の前端からの背当て板(20)までの奥行を大とすることができるので好都合である。
【００２３】
すなわち、図３及び図４に示すように、座板(12)と背当て板(20)とを、それらの上限の位置に取り付けたときは、奥行が最大となり、図５及び図６に示すように、座板(12)と背当て板(20)とを、それらの下限の位置に取り付けたときは、奥行が最小となる。
【００２４】
前者は大人用、後者は小学校低学年用として最適である。
【００２５】
この実施形態では、椅子全体を木製としてあるが、本発明はスチール製の椅子にも適用することができる。
また、皿ボルト(17)(23)を有頭ピン等の支軸とし、かつそれらを受ける鍔付きナット(14)(16)や植込みナット(21)を、単なる軸孔としてもよい。
【００２６】
さらに、鍔付きナット(14)を座板(12)の側片(13)の前部に設け、かつ長孔(15)をその後部に設けて、座板(12)の後部で、前後の皿ボルト(17)(17)の軸間距離の変動を吸収するようにしてもよい。
【００２７】
【発明の効果】
請求項１記載の発明によると、着座者の成長に合わせて、座板や背当て板の高さを変更できるだけでなく、着座部の奥行きも適切に変更でき、特に、背当て板の取り付け位置を低くするほど、座面の有効な奥行が小さくなるので、子供用として使用する場合に、奥行が大きいまま使用しなくてよく、子供にも快適な使用感を与えることができる。
【００２８】
また、側板が三角形をなし、構造が簡単で強固であるとともに、機能的で漸新な外観を呈することができる。
【００２９】
また、座板を常に安定して支持することができるとともに、両側板を機能的な構造のものとすることができる。
【００３０】
また、座板を支持する一方の支軸が、長孔に沿って摺動することにより、側板の上下部における前後の取付孔間の距離の相違を吸収し、座板を常に安定して支持することができる。
【００３１】
さらに、背当て板の取付位置を機能的に変化させることができるとともに、背当て板の支持を安定させ、強固な支持構造を呈することができる。
【００３２】
請求項２記載の発明によると、背当て板が支軸まわりに回転するのを阻止し、背当て板を安定して、強固に支持することができる。
【００３３】
請求項３記載の発明によると、ボルトとナットとの全体を強固に締め付けることができ、全体の強度を増すことができる。
【図面の簡単な説明】
【図１】本発明の一実施形態の分解斜視図である。
【図２】同じく、要部の分解斜視図である。
【図３】同じく、座板及び背当て板を高位置に取り付けた斜視図である。
【図４】同じく、側面図である。
【図５】同じく、座板及び背当て板を低位置に取り付けた斜視図である。
【図６】同じく、側面図である。
【符号の説明】
(１)側板
(２)脚杆
(３)傾斜杆
(４)後部支杆
(５)連結杆
(６)止めねじ
(７)凹部
(８)キャスタ
(９)接床部材
(10)(11)取付孔
(12)座板
(13)側片
(14)鍔付きナット(軸孔)
(15)長孔
(16)鍔付きナット
(17)皿ボルト(支軸)
(18)取付孔
(19)凹部
(20)背当て板
(21)植込みナット(軸孔)
(22)突起
(23)皿ボルト(支軸)
(Ｌ)傾斜線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair in which the height and depth of a seat plate and a back plate can be changed.
[0002]
[Prior art]
Conventional chairs for learning desks are designed for desks where the height of the top plate cannot be adjusted, and the height of the seat plate and footrest plate can be adjusted, and the height of the top plate can be adjusted. Some desks are designed so that the height of the seat and back plate can be adjusted.
[0003]
[Problems to be solved by the invention]
When the seated person is extremely different, such as a child and an adult, it is preferable that not only the height of the seat plate and the back plate, but also the depth from the front end of the seat plate to the back plate can be changed. .
[0004]
However, in order to make it possible to adjust not only the height but also the position in the front-rear direction of the seat plate, the back plate, etc., their adjustment mechanisms become complicated and increase the manufacturing cost.
[0005]
In view of the above-mentioned problems of the conventional technology, the present invention can not only change the height of the seat plate and the back plate in accordance with the growth of the seated person, but also can appropriately change the depth of the seating portion. The object of the present invention is to provide a chair that is simple in structure, capable of exhibiting a functional and progressive appearance.
[0006]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows. (1) definitive the front and rear to the front edge of a side view triangular pair of left and right tilted backward side plate, the mounting hole of each plurality corresponding to the front and rear, the front ones along the front edge of the side plate, The rear part is drilled side by side along the rear edge of the side plate, and one of the front and rear support shafts inserted through any mounting hole corresponding to the front and rear is fitted into the shaft hole provided on the side surface of the seat plate. The other support shaft is slidably fitted into a long hole facing the front-rear direction provided on the side surface of the seat plate, so that the seat plate is attached between the left and right side plates so that the height can be changed, A plurality of mounting holes are drilled in both side plates so as to be aligned along an inclined line substantially parallel to the front edge of the side plate, and both side ends of the backing plate are attached to each other with a support shaft inserted through any mounting hole. by supporting the backrest plate, before Ki傾 along the diagonal line, attached as changeable height and longitudinal position.
[0007]
( 2 ) In the above item ( 1 ), a recess is provided at each equidistant position in the same direction from each mounting hole on the inner side surface of both side plates, and the projection is provided on either side of the back plate on either side Can be fitted.
[0008]
( 3 ) In the above item (1) or (2) , the support shaft is a bolt, and a nut to which the bolt is screwed is provided on a back plate or a seat plate.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0011]
As shown in FIG. 1, the chair of the present invention includes a pair of left and right side plates (1) and (1) having a substantially right triangle shape in a side view with the front edge inclined backward.
[0012]
Each side plate (1) has a slanted heel (3) that tilts backward on the front and rear of the leg heel (2) that faces in the front-rear direction, and faces almost directly above, with the upper end at the back of the upper end of the inclined heel (3). It consists of an upright rear support (4) connected to the edge. Note that the side plate (1) can also be formed of a single plate material whose rear lower portion forms a right angle.
[0013]
The left and right side plates (1) and (1) are horizontally oriented between the front lower ends of the inclined rods (3), the rear upper ends, and the lower ends of the rear supports (4). They are connected to each other by screwing them with a set screw (6) from the outside of the side plates (1) (1) with the connecting rod (5) in between.
[0014]
A caster (8) is provided in a recess (7) formed on the lower surface of the rear end portion of each leg rod (2), and a floor contact member projecting downward on the lower surface of the front end portion of each leg rod (2). (9) (see FIGS. 4 and 6) are provided.
[0015]
A plurality of mounting holes (10) (11) corresponding to the front and rear are formed in the lower half of the inclined rod (3) and the lower half of the rear support (4) in the left and right side plates (1) (1). ), But the front one is aligned along the front edge of the inclined rod (3), and the rear one is aligned along the rear edge of the rear rod (4), that is, vertically. Have been drilled.
[0016]
Side pieces (13) and (13) are fixed to the lower surface side of the seat plate (12) whose left and right widths are substantially equal to the distance between the left and right side plates (1) and (1), as shown in FIG. , Nuts (14) with hooks are penetrating outwardly at the rear ends of both side pieces (13) and (13), and the front half of both side pieces (13) and (13) are long in the front-rear direction. A hole (15) is formed, and a hooked nut (16) is slidably fitted in each elongated hole (15) in the front-rear direction.
[0017]
The seat plate (12) has a countersunk bolt (17) that forms a support shaft inserted through an arbitrary mounting hole (10) (11) corresponding to the front and rear from the outside of the side plates (1) (1). By screwing the nuts (14) and (16), they can be firmly attached to any height between the side plates (1) and (1), although it is stepwise.
[0018]
The difference in distance between the front and rear mounting holes (10) and (11) at each height is that the hooked nut (16) into which the countersunk bolt (17) that passes through the front mounting hole (10) is screwed (15) Absorbed by sliding inside.
[0019]
In the upper half of each inclined rod (3), a plurality of mounting holes (18) are arranged at almost equal intervals along the front edge of the inclined rod (3) (in this example, the inclined rod). (3) are drilled so as to be aligned at substantially equal intervals along an inclination line (L) having an upward inclination angle slightly larger than the front edge.
[0020]
Further, on the inner surface of the substantially upper half of each inclined rod (3), a recess (19) forming a so-called dowel hole is provided at an equidistant position in the same direction in the front and lower direction from each mounting hole (18). ing.
[0021]
On the upper and lower sides of the both sides of the back plate (20), there are provided a nut (21) and a projection (22) forming a so-called dowel pin, and the back plate (20) has left and right projections (22 ) In a state where it is fitted to an optional concave part (19), the countersunk bolts (23) that form the support shaft are inserted into the mounting holes (18) almost directly corresponding to the concave part (19). (1) By inserting from the outside of (1) and screwing the countersunk bolt (23) into the stud nut (21) and tightening it, it is stepwise, but between the side plates (1) and (1). It can be firmly attached to the height.
[0022]
In addition, the back plate (20) is positioned more backward as it is mounted on the upper side, which is advantageous because the depth from the front end of the seat plate (12) to the back plate (20) can be increased.
[0023]
That is, as shown in FIGS. 3 and 4, when the seat plate (12) and the back plate (20) are attached to their upper limit positions, the depth is maximized, as shown in FIGS. As described above, when the seat plate (12) and the back plate (20) are attached to their lower limit positions, the depth is minimized.
[0024]
The former is ideal for adults, and the latter is ideal for lower grades.
[0025]
In this embodiment, the entire chair is made of wood, but the present invention can also be applied to a steel chair.
Further, the countersunk bolts (17) and (23) may be used as spindles such as headed pins, and the hooked nuts (14) and (16) and the implanted nuts (21) that receive them may be used as simple shaft holes.
[0026]
Further, a hooked nut (14) is provided in the front part of the side piece (13) of the seat plate (12), and a long hole (15) is provided in the rear part thereof. You may make it absorb the fluctuation | variation of the axial distance of a countersunk bolt (17) (17).
[0027]
【The invention's effect】
According to the first aspect of the present invention, not only the height of the seat plate and the backrest plate can be changed in accordance with the growth of the seated person, but also the depth of the seating portion can be appropriately changed. The lower the is, the smaller the effective depth of the seating surface. Therefore, when used for children, it is not necessary to use it with a large depth, and a comfortable feeling can be given to children.
[0028]
Further, the side plate has a triangular shape, has a simple and strong structure, and can exhibit a functional and renewed appearance.
[0029]
In addition, the seat plate can always be stably supported, and both side plates can have a functional structure.
[0030]
In addition, the one support shaft that supports the seat plate slides along the long hole, so that the difference in distance between the front and rear mounting holes in the upper and lower sides of the side plate is absorbed, and the seat plate is always supported stably. can do.
[0031]
Furthermore, the attachment position of the back plate can be changed functionally, the support of the back plate can be stabilized, and a strong support structure can be exhibited.
[0032]
According to the second aspect of the invention, the back plate can be prevented from rotating around the support shaft, and the back plate can be supported stably and firmly.
[0033]
According to the third aspect of the present invention, the entire bolt and nut can be firmly tightened, and the overall strength can be increased.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the main part, similarly.
FIG. 3 is a perspective view in which a seat plate and a back plate are similarly mounted at a high position.
FIG. 4 is a side view of the same.
FIG. 5 is also a perspective view in which a seat plate and a back plate are attached at a low position.
FIG. 6 is a side view of the same.
[Explanation of symbols]
(1) Side plate
(2) Legs
(3) Inclined bowl
(4) Rear support
(5) Linkage
(6) Set screw
(7) Concave
(8) Casters
(9) Flooring materials
(10) (11) Mounting hole
(12) Seat plate
(13) Side piece
(14) Nut with hook (shaft hole)
(15) Long hole
(16) Nut with hook
(17) Flat head bolt (support shaft)
(18) Mounting hole
(19) Recess
(20) Back plate
(21) Stud nut (shaft hole)
(22) Protrusion
(23) Flat head bolt (support shaft)
(L) Inclined line

Claims

The front and rear of definitive the side plate of the side view triangular pair of left and right leading edge is tilted backward, the mounting hole of each plurality corresponding to the front and rear, the front ones along the front edge of the side plates, also the rear portion of the The ones are drilled side by side along the rear edge of the side plate, and either one of the front and rear support shafts inserted through any mounting hole corresponding to the front and rear is fitted into the shaft hole provided on the side surface of the seat plate, the other of the support shaft, by fitting slidably long hole oriented in the longitudinal direction which is provided on the side surface of the seat plate, between the left and right side plates, is attached to the seat plate as the height can be changed, the side plates A plurality of mounting holes are drilled so as to be aligned along an inclined line substantially parallel to the front edge of the side plate, and both side ends of the backing plate are supported by supporting shafts inserted into arbitrary mounting holes. Accordingly, the back pad plate, front along the Ki傾 hatched, that attached as changeable height and longitudinal position Chair and butterflies.

Claims wherein recesses are provided at equidistant positions in the same direction from the respective mounting holes on the inner side surfaces of both side plates, and projections protruding from both side end surfaces of the backing plate can be fitted into any of the recesses. The chair according to 1 .

The chair according to claim 1 or 2 , wherein the support shaft is a bolt, and a nut to which the bolt is screwed is provided on a back plate or a seat plate.