JPS6194147U - - Google Patents

Description

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

第１図は伸縮式階段状観覧席の側面図、第２図
は上記観覧席の本考案起立位置固定装置を具えた
いすの側面図、第３図は起立位置固定装置の拡大
側面図、第４図は拡大平面図。 １は階段状床、１Ａ・１Ｂ・１Ｃ…は段床、２
は前倒式折畳みいす、３は収納状態の階段状床、
７はブラケツト、８は支柱、９は枢支点、１０は
トグルレバー、１０１はトグルレバーの自由端、
１１はベルクランク、１１１・１１２はベルクラ
ンクの腕、１２はトグルレバー付勢ばね、１３は
支脚、１４は脚台、１５は支柱起立ばね。 Fig. 1 is a side view of the telescoping staircase-like bleachers, Fig. 2 is a side view of the seats equipped with the standing position fixing device of the present invention, and Fig. 3 is an enlarged side view of the standing position fixing device. Figure 4 is an enlarged plan view. 1 is a stepped floor, 1A, 1B, 1C... is a stepped floor, 2
3 is a folding chair that can be folded forward, 3 is a stepped floor in a stowed state,
7 is a bracket, 8 is a column, 9 is a pivot point, 10 is a toggle lever, 101 is a free end of the toggle lever,
11 is a bell crank, 111 and 112 are arms of the bell crank, 12 is a toggle lever biasing spring, 13 is a support leg, 14 is a leg stand, and 15 is a support spring.

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、設置時には前方に延長
して階段状の床を形成すると共に、各段床のいす
を使用状態に自動起立させ、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、下端部を段床
上のブラケツトに枢支している支柱の下端を枢支
点より下に延長し、支柱が起立したとき上記延長
下端部に係合して支柱の前倒を抑止するトグルレ
バーと、一方の腕は後退する前段の床で押され、
他方の腕は上記トグルレバーの自由端側に作用す
る長さに設定したトグルレバー解放用ベルクラン
クとをブラケツトに枢支し、上記トグルレバーを
支柱の延長下端部との係合位置に維持するばねを
設けた伸縮式階段状観覧席におけるいすの起立位
置固定装置。 Each tier of the stair-shaped floor that is extendable back and forth and has a low front is equipped with a folding chair that can be folded forward.When installed, it extends forward to form a stair-shaped floor, and the chairs on each tier are automatically brought into 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 lower end of the column whose lower end is pivoted to the bracket on the step floor is extended below the pivot point, and when the column is erected, it engages with the lower end of the extension and the column is fixed. There is a toggle lever that prevents the front from falling forward, and one arm is pushed by the floor of the front stage that is retreating.
The other arm pivots on the bracket a toggle lever release bell crank set to a length that acts on the free end side of the toggle lever, and maintains the toggle lever in the engagement position with the extended lower end of the column. A device for fixing the standing position of chairs in retractable staircase-like bleachers equipped with springs.