JPH0126843Y2 - - Google Patents

Description

【考案の詳細な説明】 イ 考案の目的 〔産業上の利用分野〕 本考案は屋内競技場・コンサート会場・展示会
場等に設備し、必要に応じ伸ばして階段状の観覧
席を構成し、不使用時は縮めて壁面に沿つて多段
棚状に収納することによつて、空いた床スペース
を有効に利用できる伸縮式階段状観覧席における
いすに関する。[Detailed explanation of the invention] A. Purpose of the invention [Industrial field of application] This invention is installed in indoor stadiums, concert halls, exhibition halls, etc., and can be extended as needed to form stepped spectator seats. The present invention relates to a chair in a telescoping staircase-shaped bleachers, which can effectively utilize vacant floor space by being folded and stored in a multi-tiered shelf-like manner along a wall surface when in use.

〔従来の技術〕[Conventional technology]

上記伸縮式階段状観覧席の各段のいすは、収納
の際後段の床の下に収まるように折畳む必要があ
る。また設置時には使用状態に起さなければなら
ない。従来そのいすの起倒操作は手動式（実開昭
58−112159号公報）・電動式（実開昭58−121247
号公報・同昭58−121248号公報）あるいは階段状
床の前後動よる連動式（実開昭58−159953号公
報）等で行つている。 The chairs in each tier of the retractable tiered bleachers must be folded to fit under the floor of the rear tier when stored. Also, when installed, it must be brought into use. Conventionally, the raising and lowering of the chair was done manually (Jitsukaiaki
58-112159 Publication) / Electric type (Utility Model Publication No. 58-121247)
(Japanese Utility Model Publication No. 58-121248) or an interlocking system using a stepped floor that moves back and forth (Japanese Utility Model Application No. 58-159953).

〔考案が解決しようとする問題点〕[Problem that the invention attempts to solve]

上記いすの起倒装置はいずれもその構造が複雑
であるから、起倒の円滑を欠き、故障が起きやす
く、また観覧席全体の重量が増える不具合があ
る。手動式は大規模の観覧席には不向きである。 All of the above-mentioned chair raising and lowering devices have complicated structures, so they do not raise and lower smoothly, are prone to breakdowns, and have the disadvantage of increasing the weight of the entire seating area. Manual types are not suitable for large-scale bleachers.

本考案は従来の伸縮式階段状観覧席のいすの起
倒装置に係る問題点を解決することを目的とす
る。 The purpose of the present invention is to solve the problems associated with the conventional chair raising device for retractable staircase-shaped bleachers.

ロ 考案の構成 〔問題点を解決するための手段〕 前後に伸縮可能で前が低い階段状床１の各段床
１Ａ，１Ｂ，１Ｃ…に前倒式折畳みいす２を具
え、設置時には前方に廷長して階段状の床１を形
成すると共に、各段床１Ａ，１Ｂ，１Ｃ…のいす
２を使用状態に起立させ、収納時には後退させて
多段棚状３に短縮すると共に、各段床１Ａ，１
Ｂ，１Ｃ…のいす２を倒伏させてそれぞれ後段の
床の下に収めるようにした伸縮式階段状観覧席に
おいて、各席の起伏可能座部４、背当５およびひ
じ掛６を取付けている左右の支柱７を前後に揺動
可能の平行リンク７Ａ，７Ｂで構成し、その平行
リンク７Ａ，７Ｂの上端をひじ掛６の一部で連結
すると共に、両リンク７Ａ，７Ｂの間に支柱７を
起す方向に作用するばね８を設けたものである。B. Structure of the invention [Means for solving the problem] A forward-folding folding chair 2 is provided on each step floor 1A, 1B, 1C, etc. of the stepped floor 1 which is extendable back and forth and has a low front, and when installed, the folding chair 2 is folded forward. The chairs 2 on each tiered floor 1A, 1B, 1C, etc. are erected in use and are moved back when stored to shorten the structure into a multi-tiered shelf 3. 1A, 1
In the retractable staircase-like bleachers in which the chairs 2 of B, 1C, etc. are folded down and stored under the floor of the rear stage, each seat is equipped with a foldable seat 4, a backrest 5, and an armrest 6. The left and right columns 7 are composed of parallel links 7A and 7B that can swing back and forth, and the upper ends of the parallel links 7A and 7B are connected by a part of the armrest 6, and the column 7 is connected between both links 7A and 7B. A spring 8 is provided which acts in the direction of raising the .

〔作用〕 階段状観覧席を収納するため、階段状床１の各
段床１Ａ，１Ｂ，１Ｃ…を前のものすなわち低い
側から順次後退させていくと、立つている支柱７
（平行リンク７Ａ，７Ｂ）の背面が後段の床１Ｃ
の前端縁１C′に当り、その支柱７が立つている段
の床１Ｂの後退に伴なつて支柱７が前方に押倒さ
れていす２が鎖線示のように倒伏し、後段の床１
Ｃの下に収まる。[Operation] In order to store the stepped bleachers, when each stepped floor 1A, 1B, 1C, etc. of the stepped floor 1 is sequentially retreated from the previous one, that is, the lower side, the standing pillar 7
The back of (parallel links 7A, 7B) is the rear floor 1C
As the floor 1B of the tier on which the support 7 stands recedes, the support 7 is pushed forward and the chair 2 falls down as shown by the chain line, causing the floor 1 of the rear tier to fall down as shown by the chain line.
It fits under C.

階段状観覧席を設置するため、階段状床１の各
段床１Ａ，１Ｂ，１Ｃ…を前のものから順に送出
していくと、後段の床１Ｃによる支柱７の押圧が
解除され、倒伏時に付勢されていたばね８の力に
よつて支柱７が立ち、後段の床１Ｃの下に収まつ
ていたいす２が実線示のように使用可能の状態に
起立する。 In order to install stepped bleachers, when each stepped floor 1A, 1B, 1C, etc. of the stepped floor 1 is sent out in order from the previous one, the pressure on the support column 7 by the rear floor 1C is released, and when it collapses, The support column 7 stands up due to the force of the biased spring 8, and the chair 2, which has been accommodated under the floor 1C in the rear stage, stands up in a usable state as shown by the solid line.

〔実施例〕〔Example〕

階段状床１の各段床１Ａ，１Ｂ，１Ｃ…は、各
段ごとにその後部に取付けた支脚９と、前部を前
の段床の支脚９の上端に滑動可能に載せることに
よつて水平に支えられている。 Each step 1A, 1B, 1C... of the stepped floor 1 is constructed by supporting legs 9 attached to the rear of each step, and by slidably placing the front part on the upper end of the supporting leg 9 of the previous step. supported horizontally.

各支脚９の下端に前後に向いた脚台１０を階段
状床１の短縮収納時に隣接して並ぶ関係に取付け
ている。上記各脚台１０の下にはローラが付いて
いる。また前後の脚台１０，１０相互に、伸長時
および短縮時に順送り動を行わせるための係合部
が設けられているが図には省略されている。 A leg stand 10 facing forward and backward is attached to the lower end of each support leg 9 so as to be adjacent to each other when the stepped floor 1 is shortened and stored. A roller is attached below each of the leg stands 10. Furthermore, an engaging portion is provided between the front and rear leg bases 10, 10 to cause them to move sequentially during extension and contraction, but this is not shown in the figure.

階段状床１の最後部の段床１Ｎは床Ｆまたは壁
Ｗに固定で、その下方に伸縮駆動機Ｍを設置し、
最前端の段床１Ｓと伸縮駆動機Ｍとを例えば押し
引きチエーン等の伸縮部品でつないでいる。 The last stepped floor 1N of the stepped floor 1 is fixed to the floor F or wall W, and a telescopic drive machine M is installed below it.
The frontmost step bed 1S and the telescopic drive machine M are connected by a telescopic part such as a push/pull chain.

各いす２の支柱７を構成する平行リンク７Ａ，
７Ｂの下端は、各段床の後部に設けたブラケツト
１１にそれぞれ横軸１２Ａ，１２Ｂで前後に揺動
可能に取付けられている。 Parallel links 7A that constitute the pillars 7 of each chair 2,
The lower end of 7B is attached to a bracket 11 provided at the rear of each step floor so as to be able to swing back and forth about horizontal shafts 12A and 12B, respectively.

上記平行リンク７Ａ，７Ｂの上端にひじ掛６の
後部を横軸１３Ａ，１３Ｂで取付けて、ひじ掛６
を短リンクに利用している。 Attach the rear part of the armrest 6 to the upper end of the parallel links 7A, 7B with the horizontal shafts 13A, 13B, and
is used for short links.

平行リンク７Ａ，７Ｂは第３図に示すようにそ
れぞれ横断面Ｕ字形の部材から成り、それらを向
い合せて横断面長円形の中空柱を形成している。 As shown in FIG. 3, the parallel links 7A and 7B each consist of a member having a U-shaped cross section, which are opposed to each other to form a hollow column having an oval cross section.

上記平行リンク７Ａ，７Ｂで構成される中空支
柱７の中に引張コイルばね８を縦に配置し、その
ばね８の上端を前側のリンク７Ａの中程に、下端
を後側のリンク７Ｂの下部取付軸１２Ｂに止めて
いる。引張コイルばねに代えて圧縮コイルばねを
用いるときは、ばねの上端を後側のリンク７Ｂ
に、下端を前側のリンク７Ａの下部取付軸１２Ａ
に止めるものである。 A tension coil spring 8 is arranged vertically in the hollow support 7 made up of the parallel links 7A and 7B, and the upper end of the spring 8 is placed in the middle of the front link 7A, and the lower end is placed below the rear link 7B. It is fixed to the mounting shaft 12B. When using a compression coil spring instead of a tension coil spring, connect the upper end of the spring to the rear link 7B.
, attach the lower end to the lower mounting shaft 12A of the front link 7A.
It is something that should be stopped.

平行リンク７Ａ，７Ｂの間にコイルばね８を上
記の関係に設けると、そのばね８の収縮力または
伸長力の分力を平行リンク７Ａ，７Ｂすなをち支
柱７の起立力として利用することができる。 When the coil spring 8 is provided in the above relationship between the parallel links 7A and 7B, the contraction force or extension force of the spring 8 can be used as the erecting force of the parallel links 7A and 7B, that is, the support column 7. I can do it.

上記ばね８の外周に合成樹脂製のスリーブ１４
をはめて、ばね８が平行リンク７Ａ，７Ｂの内面
に接触するのを防止している。 A sleeve 14 made of synthetic resin is attached to the outer periphery of the spring 8.
This prevents the spring 8 from coming into contact with the inner surfaces of the parallel links 7A and 7B.

後側のリンク７Ｂの下端からストツパ片１５が
延びていて、支柱７，７Ａ，７Ｂが起立したと
き、ブラケツト１１に設けたピン１６に上記スト
ツパ片１５を当接させて支柱７の後倒れを阻止し
ている。着席中に支柱７が前に倒れないように支
柱７を拘束するためのロツク機構をブラケツト１
１に設けるが、図には省略されている。１７は前
段の床１Ａの後端縁１A′が当ることによつて鎖
線示のように作動する上記ロツク機構の解除レバ
ーである。 A stopper piece 15 extends from the lower end of the rear link 7B, and when the supports 7, 7A, and 7B are erected, the stopper piece 15 is brought into contact with a pin 16 provided on the bracket 11 to prevent the support post 7 from falling backward. is being prevented. The bracket 1 has a locking mechanism to restrain the support pillar 7 so that it does not fall forward while seated.
1, but is omitted in the figure. Reference numeral 17 is a release lever of the locking mechanism which is activated as shown by the chain line when the rear end edge 1A' of the front floor 1A comes into contact with it.

座部４は前側のリンク７Ａに起伏可能に、また
背当５はいずれかのリンク７Ａまたは７Ｂに、前
方に若干傾動可能に取付けられている。 The seat part 4 is attached to the front link 7A so that it can be raised and lowered, and the backrest 5 is attached to either link 7A or 7B so that it can be tilted slightly forward.

ハ 考案の効果 本考案は上記のように伸縮式階段状観覧席にお
いて、各席の起伏可能座部４、背当５およびひじ
掛６を取付けている左右の支柱７を前後に揺動可
能の平行リンク７Ａ，７Ｂで構成し、その平行リ
ンク７Ａ，７Ｂの上端をひじ掛６の一部で連結す
ると共に、両リンク７Ａ，７Ｂの間に支柱７を起
す方向に作用するばね８を設けたから、階段状観
覧席の設置・収納に当り、階段状床１の伸縮に伴
なつて各段床１Ａ，１Ｂ，１Ｃ…上の前倒式折畳
みいす２が平行リンク７Ａ，７Ｂとばね８の作用
で自動的に使用位置に起立し、また自動的に水平
に折畳まれ、従来の起倒装置を設けるものに比べ
ていすの支持構造が簡単になり、起倒運動も円滑
に行われるもので、大規模の伸縮式階段状観覧席
に設けるいすとして有益である。またひじ掛６の
一部が平行リンク７Ａ，７Ｂの上端をつなぐ短リ
ンクを兼ねていることは、いすの支持構造の部品
点数を減らし、構造を簡略化するのに役立つてい
る。C. Effects of the invention The present invention is based on the above-mentioned telescoping staircase-like bleachers, in which the left and right columns 7 to which the reclinable seat 4, backrest 5, and armrest 6 of each seat are attached can be swung back and forth. It is composed of parallel links 7A and 7B, and the upper ends of the parallel links 7A and 7B are connected by a part of the armrest 6, and a spring 8 is provided between both links 7A and 7B, which acts in the direction of raising the support column 7. When installing and storing the stepped bleachers, as the stepped floor 1 expands and contracts, the forward-folding chairs 2 on each step floor 1A, 1B, 1C... are moved by the action of the parallel links 7A, 7B and the spring 8. The chair automatically stands up to the position of use and is automatically folded horizontally, making the supporting structure of the chair simpler and smoother the raising and lowering movement compared to conventional chairs equipped with a lifting device. , are useful as chairs for large-scale, retractable, stepped bleachers. Moreover, the fact that a part of the armrest 6 also serves as a short link connecting the upper ends of the parallel links 7A and 7B is useful for reducing the number of parts of the chair support structure and simplifying the structure.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案のいすを設けた伸縮式階段状観
覧席の側面図、第２図は本考案いすの一部縦断側
面図、第３図は支柱の拡大横断面図。 １は階段状床、１Ａ，１Ｂ，１Ｃ…は段床、１
Ｎは固定段床、２は前倒式折畳みいす、３は収納
状態の階段状床、４は起伏可能座部、５は背当、
６はひじ掛、７は支柱、７Ａ，７Ｂは平行リン
ク、８は支柱起立ばね、９は支脚、１０は脚台。 Fig. 1 is a side view of a retractable staircase-like bleachers equipped with the chairs of the present invention, Fig. 2 is a partially vertical side view of the chairs of the present invention, and Fig. 3 is an enlarged cross-sectional view of the supports. 1 is a stepped floor, 1A, 1B, 1C... is a stepped floor, 1
N is a fixed stepped floor, 2 is a folding chair that can be folded forward, 3 is a stepped floor in a stowed state, 4 is a seat that can be raised and lowered, 5 is a backrest,
6 is an armrest, 7 is a support, 7A and 7B are parallel links, 8 is a support spring, 9 is a support leg, and 10 is a footrest.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 前後に伸縮可能で前が低い階段状床の各段床に
前倒式折畳みいすを具え、設置時には前方に廷長
して階段状の床を形成すると共に、各段床のいす
を使用状態に起立させ、収納時には後退させて多
段棚状に短縮すると共に、各段床のいすを倒伏さ
せてそれぞれ後段の床の下に収めるようにした伸
縮式階段状観覧席において、各席の起伏可能座
部・背当およびひじ掛を取付けている左右の支柱
を前後に揺動可能の平行リンクで構成し、その平
行リンクの上端をひじ掛の一部で連結すると共
に、両リンクの間に支柱を起す方向に作用するば
ねを設けた伸縮式階段状観覧席のいす。 Each tier of the stair-shaped floor that can be expanded and contracted back and forth and has a low front is equipped with a folding chair that can be folded forward.When installed, the chair is folded forward to form a stair-shaped floor, and the chairs on each tier are placed in use. In the retractable tiered bleachers, which stand up and then recede when stored, shortening the seats into a multi-tiered shelf, the chairs on each tier can be folded down and stored under the floor of the next tier. The left and right columns to which the backrest and armrest are attached are made up of parallel links that can swing back and forth, and the upper ends of the parallel links are connected by a part of the armrest, and a column is placed between both links. A retractable tiered bleacher chair equipped with a spring that acts in the upright direction.