JP4294783B2 - Chair - Google Patents

Description

【０００１】
【発明の属する技術分野】
本発明は、劇場・ホール・スタジアム等の多人数の観客を収容する場所に設置して、座部をほぼ水平状態で使用し、ほぼ垂直状態で収納する椅子に関する。
【０００２】
【従来の技術】
この種の椅子において、座体を直立した収納状態にすると、背凭れも引き下げられながら後退して直立し、座体と背凭れの上縁が接合して、雨水や埃を入りにくくする椅子は、特開平７−１７７９４２号公報に記載されている。
【０００３】
しかし、このものでは、座体を回動させるだけでなく、これと連動して背凭れをも移動させ、座体と背凭れの上縁を接合させるものであるため、背もたれを移動させるリンク機構や、このリンク機構を支持する背面カバー等が必要であり、椅子が複雑な構造の高価なものになる。
【０００４】
【発明が解決しようとする課題】
本発明は、上記した椅子に見られる問題点を解消して、背もたれ部は静止していて、座部を回動するだけで、座部と背もたれ部との対向する部分が当接して、雨水や埃を入りにくくする椅子を提供することを目的とする。
【０００５】
【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) ほぼ垂直に起立する背もたれ部と、ほぼ水平の使用状態とほぼ垂直の収納状態との間を回動可能とした座部とを有し、座部が常時収納状態の方向に付勢されている椅子において、座部を収納状態としたとき、座部と背もたれ部との対向部を、少なくとも上縁部と、両側縁部とで当接させるようにするとともに、座部と背もたれ部との当接する縁部の一方に、前記上縁部と両側縁部に連続する凹条を設け、同じく他方に、当接の際に、前記上縁部と両側縁部に設けた凹条に噛み合うようにした凸条を設ける。
【０００６】
(２) 上記(１)項において、座部の上縁部に、背もたれ部と当接したとき、背もたれ部の上縁部よりも上方に突出する突出部を設ける。
【０００７】
(３) 上記(１)または(２)項において、上方に背もたれ部を取付けた支柱の座支持部に、座部を回動可能に取付ける枢支点の位置を、座部を使用状態のほぼ水平にしたときの座部上面より上方に位置させる。
【０００８】
(４)上記(３)項において、座部を座支持部に回動可能に取付ける取付腕の座部後方側を上方に起立させ、その起立部の先端近傍に回動の枢支点を設ける。
【０００９】
【発明の実施の形態】
以下、本発明の椅子の実施形態を、添付図面を参照しながら説明する。
【００１０】
各図は、本発明の椅子の好適な一実施例を示すもので、(１)は椅子の支柱、(２)は背もたれ部、(３)は座部、(４)は座取付具である。
【００１１】
支柱(１)は、図１に示す肘形取付脚(５)によってステージの段壁へ取付けるか、直立形取付脚(図示してない)によって床面へ取付けられるものであって、上部に背もたれ部(２)を取付ける取付部(６)を設け、中間部に座部(３)を支持する座支持部(７)を設けてある。
【００１２】
背もたれ部(２)の後面の中央部に、取付部(６)が収まる凹部(８)を図１〜図３に示すように形成して、この凹部(８)に取付部(６)を収め、この取付部(６)と背もたれ部(２)とをボルト(９)により結合して、背もたれ部(２)の後面から取付部(６)が突出しないようにするもので、背もたれ部(２)は、合成樹脂のブロー成形によって形成される。
【００１３】
座部(３)は、座取付具(４)によって支柱(１)へ回動可能に取付けられているが、そのために座部(３)の裏面の中央部に座取付具(４)を収める凹部(10)を、座取付具(４)の厚さと同じ深さか、これよりも深めに形成する。そして、この座部(３)も合成樹脂のブロー成形によって、凹部(10)と一体的に形成される。
【００１４】
座取付具(４)は、座部(３)の凹部(10)に収まる形状をなし、その後側に支柱(１)に設けた座支持部(７)を挟持する１対の取付腕(11)を突設してある。この取付腕(11)は、水平状態で後方に突出させた場合は、座部(３)からの背もたれ部(２)の立ち高さに対して、背もたれ部(２)からの座部(３)の張出し長さが短いため、座部(３)を収納状態としたとき、その上縁部が背もたれ部(２)の上縁部と揃わないため、当接が行なわれなくなる。
【００１５】
このため本発明においては、座部を、上方に背もたれ部を取付けた支柱の座支持部に回動可能に取付ける枢支点の位置を、座部を使用状態のほぼ水平にしたときの座部上面より上方に位置させる。たとえば、取付腕(11)は、座部(３)の後側より図２に示す通り、支柱(１)に沿って上方へ起立させる形状とし、その起立部の先端近傍に回動の枢支点を設け、座取付具(４)に取付けた座部(３)を、図３に示す収納状態にするときは、取付腕(11)が座部(３)に回動に伴う上昇運動を行なわせて、座部(３)が背もたれ部(２)に当接するとき、その上縁部を背もたれ部(２)の上縁部に揃えて、当接の効果が十分に得られるようにする。
【００１６】
座部(３)を起立させた収納状態において、座部(３)と背もたれ部(２)とが当接する部分、すなわち、上側縁と両側縁には、図３および図４に示すように、一方に連続する凹条(12)を設け、他方に連続する凸条(13)を設けて、当接の際に、凹条(12)と凸条(13)とが噛み合うようにしてある。
【００１７】
凹条(12)と凸条(13)の形状は、図３に示す谷形と山形に限定されるものではなく、任意の形状を選択することができる。
【００１８】
座部(３)と背もたれ部(２)との上縁部は、当接したときに段差がないと、座部(３)を倒して使用状態にすることが困難である。そのため、座部(３)の上縁部には、背もたれ部(２)の上縁部より上側へ突出する突出部(14)を設けて、この突出部(14)に手を掛けて座部(３)を倒すことができるようにしてある。
【００１９】
上記取付腕(11)は、これにより支柱(１)に設けた座支持部(７)を挟持させて、該取付腕(11)と座支持部(７)に水平方向に軸孔(15)と(16)をあけ、これら軸孔(15)と(16)を一致させて、軸(17)を挿通し、取付腕(11)を座支持部(７)へ回動自在に取付ける。
【００２０】
座取付具(４)を座支持具(７)へ回動自在に取付けた軸(17)には、その両端部に取付腕(11)の空間に位置するコイルバネ(18)を装着して、その一端を座支持部(７)に止着し、他端を取付腕(11)に止着して、このコイルバネ(18)により座取付具(４)を収納状態の方向へ向かって付勢させる。
【００２１】
座支持部(７)へ回動可能に取付けられた座取付具(４)には、座部(３)を乗せて、その凹部(10)に座取付具(４)を収まらせ、座取付具(４)と座部(３)とをボルト(９)によって結合する。こうすると、座部(３)を収納状態としたとき、その裏面から座取付具(４)が通路側へ突出しなくなる。
【００２２】
なお、椅子の支柱(１)は、全部を取付脚(５)に取付けるものではなく、取付脚(５)を図１に示すように間隔を置いて並べて、これら取付脚(５)に連結杆(19)を渡して、この連結杆(19)へ取付金具(20)によって支柱(１)を取付けるようにしてある。
【００２３】
【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。
(ａ) 請求項１記載の発明によれば、座部を、ほぼ水平の使用状態から、垂直の収納状態にすると、座部と背もたれ部との対向する部分、すなわち、上縁部と両側縁部とが当接して、両者の間から雨水や埃などが入り込みにくくなるため、座面や背もたれ面の汚れが防止される。
また、座部を収納状態にすると、座部と背もたれ部の上縁部と両側縁部とに設けた凹条と凸条が噛み合って、当接の場合よりも更に雨水や埃などが入り込みにくくなるため、座面や背もたれ面の汚れの防止に一層効果がある。
【００２４】
(ｂ) 請求項２記載の発明によれば、収納状態とした座部が背もたれ部に当接していても、突出部に手が掛けられるため、座部を倒して使用状態にする操作が容易にできる。
【００２５】
(ｃ) 請求項３または４記載の発明によれば、座部を収納状態の方向に回動させると、取付腕がこれに伴い座部を上昇させて、背もたれ部に当接したとき、座部の上縁部を背もたれ部の上縁部に揃えて、座部と背もたれ部との上縁部及び両側縁部による当接を確実に行なわせることが容易である。
【図面の簡単な説明】
【図１】 本発明の実施形態を一部を使用状態、他を収納状態で示す正面図である。
【図２】 使用状態の側面図である。
【図３】 収納状態の断面図である。
【図４】 図３のＸ−Ｘにおける断面図である。
【符号の説明】
(１)支柱
(２)背もたれ部
(３)座部
(４)座取付具
(５)取付脚
(６)背もたれ部の取付部
(７)座支持部
(８)背もたれ部の凹部
(９)ボルト
(10)座部の凹部
(11)座取付具の取付腕
(12)凹条
(13)凸条
(14)突出部
(15)(16)軸孔
(17)軸
(18)コイルバネ
(19)連結杆
(20)取付金具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair that is installed in a place that accommodates a large number of spectators, such as a theater, a hall, and a stadium, and that uses a seat portion in a substantially horizontal state and stores it in a substantially vertical state.
[0002]
[Prior art]
In this type of chair, when the seat is placed in an upright storage state, the back rests while the backrest is pulled down and stands upright. JP-A-7-177942 discloses.
[0003]
However, in this case, not only the seat body is rotated, but also the backrest is moved in conjunction with this, and the upper edge of the seat body and the backrest is joined, so the link mechanism that moves the backrest In addition, a back cover or the like for supporting the link mechanism is required, and the chair becomes expensive with a complicated structure.
[0004]
[Problems to be solved by the invention]
The present invention eliminates the problems found in the chair described above, the backrest portion is stationary, and the seat portion and the backrest portion are in contact with each other only by rotating the seat portion. An object of the present invention is to provide a chair that makes it difficult for dust and dirt to enter.
[0005]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) It has a backrest that stands substantially vertically and a seat that can be rotated between a substantially horizontal use state and a substantially vertical storage state, and the seat is always biased in the direction of the storage state. In the chair that is being used, when the seat is in the stowed state, the opposing portion of the seat and the backrest is brought into contact with at least the upper edge and both side edges , and the seat and the backrest On one of the abutting edges, a concave line continuous to the upper edge part and both side edge parts is provided, and on the other side, a concave line provided on the upper edge part and both side edge parts at the time of abutting is provided. Protrusions that are designed to mesh with each other are provided .
[0006]
(2) In the above item (1), the upper edge portion of the seat portion is provided with a protruding portion that protrudes upward from the upper edge portion of the backrest portion when contacting the backrest portion.
[0007]
(3) In the above item (1) or (2) , the position of the pivot point for pivotally mounting the seat portion on the seat support portion of the column with the backrest portion mounted on the upper side, It is positioned above the upper surface of the seat when
[0008]
(4) In the above item (3), the rear side of the seat portion of the mounting arm that pivotably attaches the seat portion to the seat support portion is raised upward, and a pivot point for rotation is provided near the tip of the standing portion.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the chair of the present invention will be described with reference to the accompanying drawings.
[0010]
Each figure shows a preferred embodiment of the chair of the present invention, where (1) is a chair column, (2) is a backrest, (3) is a seat, and (4) is a seat fixture. .
[0011]
The support column (1) is attached to the stage wall of the stage by an elbow-shaped mounting leg (5) shown in FIG. 1, or is attached to the floor surface by an upright mounting leg (not shown), and has a backrest at the top. An attachment part (6) for attaching the part (2) is provided, and a seat support part (7) for supporting the seat part (3) is provided in the middle part.
[0012]
A recessed portion (8) in which the mounting portion (6) is accommodated is formed in the center of the rear surface of the backrest portion (2) as shown in FIGS. 1 to 3, and the mounting portion (6) is accommodated in the recessed portion (8). The attachment portion (6) and the backrest portion (2) are coupled by bolts (9) so that the attachment portion (6) does not protrude from the rear surface of the backrest portion (2). ) Is formed by blow molding of synthetic resin.
[0013]
The seat portion (3) is pivotally attached to the support column (1) by the seat fixture (4). For this purpose, the seat fixture (4) is housed in the center of the back surface of the seat portion (3). The recess (10) is formed to the same depth as the seat fixture (4) or deeper than this. And this seat part (3) is also integrally formed with the recessed part (10) by the blow molding of a synthetic resin.
[0014]
The seat fixture (4) has a shape that fits in the recess (10) of the seat (3), and a pair of mounting arms (11) that sandwich the seat support (7) provided on the column (1) on the rear side. ) Is protruding. When this mounting arm (11) is protruded rearward in a horizontal state, the seat portion (3) from the backrest portion (2) with respect to the standing height of the backrest portion (2) from the seat portion (3). ) Is short, and when the seat portion (3) is in the retracted state, the upper edge portion thereof does not align with the upper edge portion of the backrest portion (2), so that the contact is not performed.
[0015]
For this reason, in the present invention, the upper surface of the seat portion when the seat portion is substantially horizontal in use when the position of the pivot point for pivotally attaching the seat portion to the seat support portion of the support column having the backrest portion attached thereto is provided. Position it higher. For example, as shown in FIG. 2, the mounting arm (11) has a shape that rises upward along the support column (1) as shown in FIG. 2, and a pivot point of rotation near the tip of the standing portion. When the seat part (3) attached to the seat fixture (4) is brought into the retracted state shown in FIG. 3, the attachment arm (11) performs an upward movement as the seat part (3) rotates. Thus, when the seat portion (3) contacts the backrest portion (2), the upper edge portion thereof is aligned with the upper edge portion of the backrest portion (2) so that the contact effect can be sufficiently obtained.
[0016]
As shown in FIG. 3 and FIG. 4, the seat portion (3) and the backrest portion (2) are in contact with each other in the stowed state where the seat portion (3) is stood up, that is, on the upper edge and both side edges. A continuous ridge (12) is provided on one side, and a continuous ridge (13) is provided on the other, so that the concave ridge (12) and the ridge (13) are engaged with each other at the time of contact.
[0017]
The shape of the concave stripe (12) and the convex stripe (13) is not limited to the valley shape and the mountain shape shown in FIG. 3, and an arbitrary shape can be selected.
[0018]
If there is no step between the upper edge of the seat (3) and the backrest (2), it is difficult to bring the seat (3) down and put it in use. Therefore, the upper edge of the seat (3) is provided with a protrusion (14) that protrudes upward from the upper edge of the backrest (2). (3) can be defeated.
[0019]
The mounting arm (11) holds the seat support portion (7) provided on the support column (1) thereby, and the mounting arm (11) and the seat support portion (7) have a shaft hole (15) in the horizontal direction. And (16) are opened, the shaft holes (15) and (16) are aligned, the shaft (17) is inserted, and the mounting arm (11) is rotatably mounted on the seat support portion (7).
[0020]
The shaft (17) on which the seat fixture (4) is rotatably attached to the seat support (7) is fitted with coil springs (18) located in the space of the attachment arm (11) at both ends thereof. One end is fixed to the seat support portion (7), the other end is fixed to the mounting arm (11), and the seat spring (4) is urged toward the storage state by the coil spring (18). Let
[0021]
Place the seat (3) on the seat fixture (4) that is pivotally attached to the seat support (7) and place the seat fixture (4) in the recess (10). The tool (4) and the seat (3) are joined by a bolt (9). If it carries out like this, when the seat part (3) will be in a stowed state, the seat fixture (4) will not protrude from the back surface to the channel | path side.
[0022]
It should be noted that the chair support (1) is not entirely attached to the mounting legs (5), but the mounting legs (5) are arranged at intervals as shown in FIG. 1 and connected to the mounting legs (5). (19) is passed, and the column (1) is attached to the connecting rod (19) by the mounting bracket (20).
[0023]
【The invention's effect】
According to the present invention, the following effects can be achieved.
(a) According to the first aspect of the present invention, when the seat portion is changed from a substantially horizontal use state to a vertically stowed state, a portion where the seat portion and the backrest portion face each other, that is, an upper edge portion and both side edges. Since the parts come into contact with each other and rainwater, dust, and the like are less likely to enter between the two, contamination of the seating surface and the backrest surface is prevented.
In addition, when the seat is in the stowed state, the recesses and protrusions provided on the upper edge and both side edges of the seat and the backrest mesh with each other, and rainwater and dust are less likely to enter than in the case of contact. Therefore, it is more effective in preventing dirt on the seating surface and the backrest surface.
[0024]
(b) According to the invention described in claim 2, even if the seat portion in the storage state is in contact with the backrest portion, a hand can be put on the protruding portion, so that it is easy to operate the seat portion by putting it down into use. Can be.
[0025]
(c) According to the invention of claim 3 or 4, when the seat portion is rotated in the retracted state, when the attachment arm raises the seat portion and comes into contact with the backrest portion, It is easy to make sure that the upper edge of the seat is aligned with the upper edge of the backrest and that the upper edge and both side edges of the seat and the backrest are brought into contact with each other.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention partially in a use state and others in a stored state.
FIG. 2 is a side view of the usage state.
FIG. 3 is a cross-sectional view of the storage state.
4 is a cross-sectional view taken along the line XX of FIG.
[Explanation of symbols]
(1) Prop
(2) Backrest
(3) Seat
(4) Seat fixture
(5) Mounting legs
(6) Back mounting part
(7) Seat support
(8) Recessed part of backrest
(9) Bolt
(10) Concave part of seat
(11) Seat mounting arm
(12) Concave
(13) Projections
(14) Projection
(15) (16) Shaft hole
(17) Axis
(18) Coil spring
(19) Linkage
(20) Mounting bracket

Claims (4)

ほぼ垂直に起立する背もたれ部と、ほぼ水平の使用状態とほぼ垂直の収納状態との間を回動可能とした座部とを有し、座部が常時収納状態の方向に付勢されている椅子において、
座部を収納状態としたとき、座部と背もたれ部との対向部を、少なくとも上縁部と、両側縁部とで当接させるようにするとともに、座部と背もたれ部との当接する縁部の一方に、前記上縁部と両側縁部に連続する凹条を設け、同じく他方に、当接の際に、前記上縁部と両側縁部に設けた凹条に噛み合うようにした凸条を設けたことを特徴とする椅子。It has a backrest part that stands substantially vertically and a seat part that can rotate between a substantially horizontal use state and a substantially vertical storage state, and the seat part is always biased in the direction of the storage state. In the chair,
When the seat is in the stowed state, the facing portion between the seat and the backrest is brought into contact with at least the upper edge and both side edges, and the edge between the seat and the backrest is in contact On one side, a ridge that is continuous with the upper edge and both side edges is provided, and on the other side, when contacting, the ridges meshed with the grooves provided on the upper edge and both side edges. A chair characterized by providing . 座部の上縁部に、背もたれ部と当接したとき、背もたれ部の上縁部よりも上方に突出する突出部を設けたことを特徴とする請求項１記載の椅子。  The chair according to claim 1, wherein a protrusion is provided on the upper edge portion of the seat portion so as to protrude upward from the upper edge portion of the backrest portion when contacting the backrest portion. 上方に背もたれ部を取付けた支柱の座支持部に、座部を回動可能に取付ける枢支点の位置を、座部を使用状態のほぼ水平にしたときの座部上面より上方に位置させたことを特徴とする請求項１または２に記載の椅子。  The position of the pivot point for pivotally mounting the seat part on the seat support part of the column with the backrest part attached upward is positioned above the upper surface of the seat part when the seat part is almost horizontal. The chair according to claim 1 or 2, characterized by the above-mentioned. 座部を座支持部に回動可能に取付ける取付腕の座部後方側を上方に起立させ、その起立部の先端近傍に回動の枢支点を設けたことを特徴とする請求項３に記載の椅子。  4. The seat support according to claim 3, wherein the seat rear part of the mounting arm for pivotally attaching the seat part to the seat support part is erected upward, and a pivot point is provided in the vicinity of the tip of the erection part. Chairs.

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