310268 A7 B7 五、發明説明（\ ) 本發明有關於座椅結構，更特別地，係有關於一種適 用於體育場、大廳堂、劇院及類似的座椅結構。通常該等 座椅結構像適於被安裝在一水平地延伸的横桿、塞缝片、 或者類似的.支撑物上。 在該等座椅結構中，該樓桿的位置決定每排座位的位 置。該座椅結構偽由一靠背部和一座部所形成•該座部偽 在一實質上水平的使用位置與一實質上垂直的通路位置之 間樞轉。在相鄰之横桿之間的前到後距離決定兩排座位間 的空間且該等座部傺樞轉至該垂直位置俾容許人們沿著該 等座位行走。 在一種類型的習知座椅結構中，該靠背部係直接被安 裝至該橫捍且每個靠背部係被定位於一對扶手之間。毎對 扶手偽直接被夾在該橫桿。延伸在毎對扶手之間的傜一水 平軸，該座部偽以該水平軸為中心握轉。這種類型之習知 座椅結構的例子包括註册商樣為PER FORMA之由申請人所販 賣的座椅結構。 在第二種類型的習知座椅結構中，該靠背部亦條被直 接夾到該橫桿，然而，該拊夾機構包括樞軸地安裝該座部 的一樞軸或者鉸鍵。如果扶手偽需要的話，這是個別地提 供而且一扶手傜夾到該樓桿在該座椅結構的每一側。這種， 類型之座椅結構的例子包括由日本之K0T0BUKI所販賣的型 號TS-3002和TS-8003及亦由日本之K0T0BUKI所販賣.的型 號 BLM2173A和 BLM2273A。 第三種類型的習知椅子係一種由單一基座安装的座椅 -4 - 本紙張尺度適用中國國家槺準（CNS ) A4規格（210X297公釐） 1--.---M.----{ ί------訂------>s---Γ (請先閱讀背面之注意事項再填寫本頁) 經濟部中央揉準局員工消費合作社印製 A7 310268 B7 五、發明説明（？·） 結構而不是一種由橫捍安裝的座椅結構。在這裡* 一大致 Y形的架體係被提供，該Y形架體的幹部偽被直接安裝在 地上，該γ形架髏之臂部的上端提供水平延伸扶手一脑支 撑，該等抉手的後端係由一水平延伸帶連接，該靠背部偽 被連接至該水平延伸帶，而且該座部僳被樞軸地安裝在一 水平軸上，該水平軸大約從該Y形架體之臂部的中點延伸 出來。這類型之座椅結構的例子包括由USA之J G FURNITURE SYSTEMS INC.所製造的型號62-63及由日本之K0T0BUKI所 販賣的型號TS 3637 | 所有以上所述的習知座椅結構遭遇很多缺點-該第三 種類型，單一基座椅子，當座部在垂直位置時，傣最浪費 前到後距離。第二種類型需要一非常強壯，而因此昂貴的 鉸鍵因為該座部#本質上從一非常短的軸植轉而因此倦易 於受到由扭轉所引起的損壞•然而，該第二種類型的習知 座椅結構傺具有抉手為可選擇的優點。該第一和第.三種類 型的座椅結構條同樣遭遇到扶手為必須的缺點因為它們的 扶手提供座部轉軸的支撑。然而，因為該座部係設有兩個 在一水平軸線上的樞轉點，該座部的樞轉配置像強壯並且 能夠以低成本來設置。 本發明之目的你來提供一種與以上所述之習知座椅結 構不同的座椅結構且在其中，特別地，該座部並非被擓設 於抉手之間，藉此容許扶手的設置為可選擇的： 根據本發明•一種適於被安裝在一水平延伸橫桿或者 類似之支撑物上的座椅結構係被掲露，該座椅結構具有一 -5 - 本紙張尺度逋用中國國家揉率（CNS ) A4«^ ( 210X297公釐） --------r----^一------訂------^ I (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局負工消费合作社印製 經濟部中央標準局男工消费合作社印製 A7 B7 五、發明説明（3) 個在一實質上水平之使用位置與一實質上垂直之通路位置 之間樞轉的座部，該座椅結構包含一叉狀軛，該叉狀軛具 有一對枝部和一幹部，每個枝部向上延伸來形成一靠背部 之一對相對邊的其中一邊，該幹部形成一連接裝置之至少 部份來安裝該座椅結構在該镄桿上，且該座部像被樞設於 延伸在該軛之枝部之間的一軸上。 本發明之椅子的數値實施例現在将會配合圖式來作描 述，其中： 第1圖俗本發明之第一實施例之-一排由横捍安裝之座 椅結構的立體圖； 第2圖係第1圖之座椅結構中之一摘的前視立體圖， 該座部偽被描繪在該實質上水平的位置； 第3圖偽類似於第2圖的圖視，但顯示該座部升到該 實質上垂直的通路位置； 第4圖偽類似於第2和3圖的圖視，在缺少座部之下 顯示該靠背部和軛； 第5圖係支撑該座椅結構在該横捍上之坩夾配備的立 體圖； 笫6圖像第二實施例之座椅結構的立體圖，其具有一 頭枕部延伸在該靠背部上且偽設有可選擇的扶手； 第7和8圖分別為再進一步之實施例之扶手的立髏圖 * 第9圖傺由適用於可縮回座椅結構之横桿支撑条統之 第一實施例的三個側視平面所組成； 本紙張尺度逋用中國困家橾举（CNS)A4规格（210x297公嫠） (請先閱讀背面之注意事項再填寫本頁) 訂 Λ! 經濟部中央標準局員工消費合作社印製 310268 a? _ B7 五、發明説明（iv ) 第1 〇圖像類似於第9圖的圖視，但顯示另一種供可 縮回座椅結構用的配備； 第1 1圖係類似於第9和10圖的圖視，但顯示又另 一種配備； 第1 2圖係一部份地延伸之可縮回座椅結構之又再一 實施例的簡略前視画；及 第1 3圖倦當第1 2圖之配備被完全延伸時，通過第 1 2圖之配備之前至後的縱向播截面圖。 如在第1圖中所見，一排1座椅結構2傷藉箸安裝若 干數目的座椅結構2在一水平延伸橫桿3上來被形成。該 横桿3像能夠由以習知形式等間隔地安裝在一階梯式廳堂 地面（圖中未示）之水平表面，或者踏板上的柱4所支持 。或者，該横桿3偽能夠由從該階梯式廳堂地面之垂直上 升表面傾斜和延伸出來的臂所支持，這眾所周知的配備並 沒有被描繪在圖式中。 從第2和3圖會見到每傾座椅結構2採取一靠背部6 和一座部7的形式，該座部7可在第2圖中所描鑰之一實 質上水平的使用位置與第3圖中所描繪之一實質上垂直的 通路位置之間樞轉。 如在第4圖中所見* 一叉狀軛9係被提供，其具有一 對枝部10和一幹部11。該幹部11本質地包含一夾具12，籍 由該夾具12,該軛9 •及因此最終地該整個座椅結構2 · 能夠被支持在該横捍3上。該等枝部10向上延伸來形成該 靠背部6的邊。此外，每個枝部10帶有一榴軸13。該等水 -7 - 本紙張尺度適用中國國家棵率（CNS)A4规格（ 210X297公釐） --------r----------、βτ------^ I (請先閱讀背面之注意事項再填寫本頁) A7 B7 經濟部中央標準局員工消費合作社印製 五、發明説明（s ) 平地對準的樞軸13容許該座部7被樞轉地安裝於該等枝部 10之間。該樞轉配置之較佳形式的詳細描述偽被提供在本 案申請人之名為"A PIVOT MECHANISM 〃的專利申請案第 PN3766號中（代理人參考號第306258號）*該專利申謓案 的内容偽被併合於此作為參考。 現在請參閲第5圖所示，該軛9之幹部11之製造的細 節偽被描繪。最好的僳，整個靠背部6和軛9偽能夠利用 習知的空氣模鏵技術在一單一步驟中噴射楔鑲而成，該技 術容許該等枝部1 〇偽如在第5圖中之16處所指示般為中空 的。該座部7亦偽最好利用該空氣模鐮技術由噴射模簿法 形成。該一種配置容許足夠的強度傜被獲得且同時得到輕 重量及材料的經濟性。 在第6画中，本發明之座椅結構的再一實施例偽被描 繪，該座椅結構具有一對個別的抉手18，每値扶手能夠被 獲自地坩夾到該橫桿3且兩餹扶手皆不以任何方法支持該 靠背部或者座部。此外，在第6圖中所描繪的座椅結構亦 包括一可選擇的頭枕19 (或者靠背部延伸部），其能夠被 固定到該靠背部6 。第7和8圖描繪另一種形式的扶手20 和21。 在某些廳堂中*倦需要一種被稱為”可縮回之座椅結 構（retractable seating〉”的座椅結構。這種座椅结構 在舞台區域偽變化的地方傜尤其有用的。因此，在要求小 舞台區域的各種表演，可供觀眾使用的地面空間能夠被增 加且額外的座椅結構僳被提供在這地面空間：為了配合需 ---.---Μ----C------訂------ί I (請先閲讀背面之注意事項再填莴本頁) 本紙張尺度適用中國鬮家標準（CNS ) Α4规格（210Χ297公釐） 經濟部中*揉準局貝工消费合作社印製 A7 B7 五、發明説明（k) 要較大舞台區域的表演，這種座椅結構當不需要時係能夠 被縮回的。 該種可縮回的座椅結構具有每個樓桿偽被安裝在·一串 拉出抽屜中之對應的一個上，該等油屜傜與衣櫃的抽屜類 似，除了當該等抽屜被完全伸出時，它們偽形成一階悌式 排列，毎個相鄰的横桿傣被定位在越來越高層的階梯式抽 屜上。為了容許該等抽屜被縮回，整個座椅結構懍需要能 夠向下摺叠俾躺於一實質上水平的位置。 第9圖描繪一種藉著使用一個位於支持該横捍33之每 痼柱34上之樞軸31來達到這目的在本發明之第1至8圖之 椅子上的第一機構’為了從該座椅溝形前進到摺叠構形， 該座椅結構偽從在第9圖中的左邊圖樣移動到右邊圖樣。 該座部37傜初始地被移動至靠近該靠背部36的垂直位置俾 將該座椅結構置於在第9圖之中間圖樣中所描繪的構形。 整個橫捍33然後係以樞軸31為中心握轉俾將相鄰的座部37 和靠背部36置放在第9圖之右邊圖樣中所描繪之實質上水 平的位置。由熟知此項技藝之人仕會察覺到的是該樞軸31 亦能夠以與第9圖中所描繪之方向相反的方向移動俾可將 該靠背部36置放在該座部37之上，而並非如在第9圖中所 描繪般在該座部37之下。那就是說，該座椅結構能夠向前 樞轉，不是如所描繪般向後樞轉。 第1 0画描繪用以逹成該所需之櫃轉動作俾可利用可 縮回之座椅結構的另一種配置。在這裡，該座部47和靠背 部46偽與先前一樣且亦偽被安裝於一橫桿43上。然而，該 本紙張尺度逋用中國國家揉準（CNS ) A4规格（210X297公釐） -------·-----^ ^------訂------^ I (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 310268 Α7 Β7 五、發明説明（Ί ) 等枝部40傜各設有一樞軸41。在這配置中，該横桿43依然 係不樞轉，然而該座部47和靠背部46以該樞軸4 1為中心樞 轉。在第1 0圖之右邊圖樣所描繪的配置中，該座部47偽 在該靠背部46之上，該配置偽向後握轉 <對於熟知此項技 藝之人仕來說會很明白的是該樞軸41亦能夠以相反的方向 移動俾可將該座部47和靠背部46向前樞轉，因此該靠背部 46躺在該座部47之上。 第9和10圖之可縮回的座椅結構最好像被變化以致 於該座部37,47條受彈簧作用而因此只要沒有人坐在該座 部上，該座部上升到該實質上垂直的位置。然而|如果一 値興奮的觀眾跳起來的話，偽會産生一値問題，那就是在 該觀眾下面的座部已升起而不為他所知。因此，當該觀眾 再度坐下時，他未注意該座部並且不注意地重重落在該地 面。為了防止這問題發生，在第1 1圖中所描繪的配置像 被提供。在這裡，該靠背部56偽本質地與前面一樣*然而 ，該等樞軸13包括一個由彈性地可壓縮材料製成的檔塊（ 如橡膠或者其他彈性體般），其限制該座部57向上上升所 依循的弧形。因此，該座部57會在垂直前的一餹角度停住 ，典型地為15至3(Γ 。在這情況下，如果一興奮的觀眾跳 起來的話，當該觀眾再坐下時，該觀眾的臀部會接觸到該 座部57的前緣，藉此當該觀眾恢復到一就座位置時，將該 座部57回復到該實質上水平的位置。以這樣的方法，意外 的可能性便避免。 然而，因為該彈性地可壓縮材料（圖中未示）藉著受 -10 - 本紙張尺度逍用中國國家橾率（CNS > A4規格（210X297公釐） ---.---r----^ 一------、訂------{ I (請先閲讀背面之注意事項再填寫本頁) 310268 at B7 經濟部中央揉隼局貝工消费合作社印製 五、發明説明（么） 到一適當的力量而偽能夠被臛縮超過其之初始位置，藉箸 如在第1 1圖中所描繪般向前摺叠該靠背部56,該靠背部 56能夠被置於一實質上水平的位置，其像足夠低以容許可 縮回的座椅結構被使用。因此，即使該座部57偽如在第 1 1圖之中間圖樣所描繪般距離垂直15至30° ，可縮回的 座椅結構能夠被使用。這確保一安全的配置縱使可縮回的 座椅結構傜被使用。 在第1 2和1 3圖中，再進一步的實施例係被描繪。 在這裡，該等靠背部66在63處相對於該等座部67植轉。該 等座部67係被直接安裝在托架68上。每個托架68偽被安裝 於裝有輪子的腿部69上以致於傜如第1 3圖中所見般可左 右往返。第1 3圖描繪該完全延伸的托架位置，而且藉箸 如在第13圖中所見般向左推而偽可縮回的。在第12圖 中，該較下面的托架68傺被縮回的。 當對應的托架偽被延伸時•該等靠背部66像能夠如在 第1 3圖中所見般以反時針方向樞轉。在縮回托架68之前 *被安裝於該托架68上之該等座部67的靠背部66係如在第 1 3圖中所見般以順時針方向揠轉。這容許每悔較下面之 托架的靠背部66通過緊在其上之托架的下面。 這實施例的主要優點係來降低在相鄰托架間的高度。 以上的描述只是本發明的一實施例而已，對於熟知此 項技藝之人仕來説，各種變化在沒有離開本發明的範圍之 下係能夠被完成的。 元件標號對照表 -11 - (請先閱讀背面之注意事項再填寫本頁) -! 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐〉 經濟部中央橾準局員工消費合作社印製 A7 B7 五、發明説明（ή ) 1 排 2 座椅結構 3 横捍 4 柱 6 靠背部 7 座部 9 軛 10 枝部 11 幹部 12 夾具 13 樞軸 18 扶手 19 頭枕 20 扶手 21 扶手 31 樞軸 34 柱 33 橫捍 37 座部 36 靠背部 4 7 座部 46 靠背部 43 横捍 40 枝部 41 樞軸 56 靠背部 57 座部 66 靠背部 67 座部 68 托架 69 腿部 -12 - I--Γ.--r----A:------訂------^ I (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4规格（210X297公釐）310268 A7 B7 V. Description of the invention (\) The present invention relates to a seat structure, and more particularly, relates to a seat structure suitable for stadiums, halls, theaters and the like. Usually the seat structure is suitable for being mounted on a horizontally extending cross bar, plug, or similar support. In these seat structures, the position of the floor pole determines the position of each row of seats. The seat structure is formed by a backrest and a seat part. The seat part is pivoted between a substantially horizontal use position and a substantially vertical passage position. The front-to-back distance between adjacent crossbars determines the space between the two rows of seats and the seats pivot to this vertical position to allow people to walk along these seats. In one type of conventional seat structure, the backrest is directly attached to the transverse support and each backrest is positioned between a pair of armrests. Each pair of handrails is directly clamped to the crossbar. A horizontal axis extending between each pair of armrests, the seat is held around the horizontal axis. Examples of this type of conventional seat structure include seat structures sold by applicants whose registrar model is PER FORMA. In the second type of conventional seat structure, the backrest is also directly clipped to the crossbar, however, the clamping mechanism includes a pivot or hinge pivotally mounting the seat. If the armrests are pseudo-needed, this is provided separately and an armrest is clamped to the floor pole on each side of the seat structure. Examples of such a type of seat structure include models TS-3002 and TS-8003 sold by KOTOBUKI in Japan and models BLM2173A and BLM2273A also sold by KOTOBUKI in Japan. The third type of conventional chair is a chair with a single base-4-This paper size is applicable to China National Standard (CNS) A4 specification (210X297mm) 1 --.--- M .-- -{ί ------ Subscribe ------ > s --- Γ (Please read the precautions on the back before filling in this page) Printed by the Ministry of Economic Affairs Central Consumers Cooperative Staff A7 310268 B7 V. Description of the invention (? ·) The structure is not a seat structure installed by a horizontal arm. Here * a roughly Y-shaped frame system is provided, the stem of the Y-shaped frame is pseudo-installed directly on the ground, and the upper end of the arm of the γ-shaped frame provides horizontally extending armrests and brain support. The rear end is connected by a horizontally extending strap, the backrest is pseudo-connected to the horizontally extending strap, and the seat is pivotally mounted on a horizontal axis, which is approximately from the arm of the Y-shaped frame The midpoint of the department extends. Examples of this type of seat structure include models 62-63 manufactured by JG FURNITURE SYSTEMS INC. Of USA and model TS 3637 sold by K0T0BUKI of Japan. All the above-mentioned conventional seat structures suffer from many disadvantages- In the third type, a single pedestal chair, when the seat is in a vertical position, the Dai wastes the most front-to-back distance. The second type requires a very strong, and therefore expensive, hinge because the seat # is essentially implanted from a very short axis and is therefore vulnerable to damage caused by torsion. However, this second type of The conventional seat structure ye has the advantage that the choice is optional. The first and third types of seat structure strips also suffer from the disadvantage that armrests are necessary because their armrests provide support for the seat shaft. However, because the seat is provided with two pivot points on a horizontal axis, the pivot configuration of the seat is strong and can be set at a low cost. The purpose of the present invention is to provide a seat structure that is different from the conventional seat structure described above and in which, in particular, the seat portion is not provided between the hands, thereby allowing the armrest to be set as Optional: According to the present invention • A seat structure suitable for being mounted on a horizontally extending crossbar or similar support is exposed, the seat structure having a size of -5 Kneading rate (CNS) A4 «^ (210X297mm) -------- r ---- ^ 一 ------ order ------ ^ I (please read the note on the back first Please fill in this page again.) Printed by the Ministry of Economic Affairs, Central Bureau of Standards, Negative Work Consumer Cooperatives Printed by the Ministry of Economic Affairs, Central Bureau of Standards, Male Workers ’Consumer Cooperatives A7 B7 V. Invention Description (3) A use position at a substantial level and a substantial A seat pivoting between vertical passage positions. The seat structure includes a fork-shaped yoke having a pair of branches and a stem, each branch extending upward to form a pair of opposed backrests On one of the sides, the stem forms at least part of a connecting device to install the seat structure on the stern On the seat portion and the image is pivoted to the branch portion extending between a shaft of the yoke. Several embodiments of the chair of the present invention will now be described in conjunction with the drawings, in which: Figure 1 is the first embodiment of the present invention-a perspective view of a row of seat structures installed by horizontal guards; Figure 2 It is a front perspective view of one of the seat structures in Figure 1, the seat is pseudo depicted in the substantially horizontal position; Figure 3 is pseudo similar to the view in Figure 2, but showing that the seat rises To the substantially vertical passage position; Figure 4 is pseudo similar to the views of Figures 2 and 3, showing the backrest and yoke under the lack of the seat; Figure 5 supports the seat structure in the horizontal A perspective view of the crucible equipped on the top; a perspective view of the seat structure of the second embodiment in the image 6 with a headrest extending over the backrest and pseudo-selectable armrests; Figures 7 and 8 are respectively Stand-up cross-sectional view of the armrest of a still further embodiment * Figure 9: Ye consists of three side-view planes of the first embodiment of the cross-bar support system applicable to the retractable seat structure; China Sleepy Family (CNS) A4 specification (210x297 male daughter) (Please read the notes on the back first Fill in this page) Order Λ! 310268 a printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs _ B7 V. Description of the invention (iv) The first image is similar to the image shown in the image in Figure 9, but shows another available Equipment for returning to the seat structure; Figure 11 is similar to the views of Figures 9 and 10, but shows yet another kind of equipment; Figure 12 is another part of the retractable seat structure that extends A schematic front view drawing of another embodiment; and Fig. 13 when the equipment of Fig. 12 is fully extended, a longitudinal cross-sectional view before and after passing through the equipment of Fig. 12; As seen in Figure 1, a row of 1 seat structures 2 is formed by installing a number of seat structures 2 on a horizontally extending crossbar 3. The crossbar 3 can be supported by a horizontal surface installed on the floor of a stepped hall (not shown) at regular intervals in a conventional manner, or a column 4 on the tread. Alternatively, the crossbar 3 can be supported by arms inclined and extending from the vertical rising surface of the stepped hall floor. This well-known equipment is not depicted in the drawings. It can be seen from FIGS. 2 and 3 that the reclining seat structure 2 takes the form of a backrest 6 and a seat 7, which can be used in a substantially horizontal use position of the key described in FIG. The one depicted in the figure pivots between substantially vertical passage positions. As seen in Fig. 4 * A pronged yoke 9 is provided, which has a pair of branches 10 and a stem 11. The stem 11 essentially contains a jig 12 by which the yoke 9 • and thus the entire seat structure 2 • can ultimately be supported on the transverse arm 3. The branches 10 extend upward to form the side of the backrest 6. In addition, each branch 10 has a grenade shaft 13. Such water-7-This paper scale is applicable to China National Tree Rate (CNS) A4 specification (210X297mm) -------- r ----------, βτ ----- -^ I (please read the precautions on the back before filling in this page) A7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs V. Description of Invention (s) The flatly aligned pivot 13 allows the seat 7 to be pivoted Ground is installed between the branches 10. A detailed description of the preferred form of the pivot configuration is provided in the applicant's patent application No. PN3766 named "A PIVOT MECHANISM 〃" (Agent Reference No. 306258) * The patent application case The content of is pseudo-incorporated here for reference. Referring now to Fig. 5, details of the manufacturing of the stem 11 of the yoke 9 are depicted. Best of all, the entire backrest 6 and the yoke 9 can be formed by spraying the wedges in a single step using the conventional air mold technology, which allows the branches 10 to be pseudo as shown in Figure 5 The instructions at 16 are generally hollow. The seat 7 is also preferably formed by the injection mold method using the air mold sickle technique. This configuration allows sufficient strength to be obtained while achieving light weight and material economy. In the sixth drawing, yet another embodiment of the seat structure of the present invention is pseudo-depicted, the seat structure has a pair of individual decision arms 18, each armrest can be crucibled to the cross bar 3 and Neither armrest supports the backrest or seat in any way. In addition, the seat structure depicted in Figure 6 also includes an optional headrest 19 (or backrest extension) that can be secured to the backrest 6. Figures 7 and 8 depict another form of armrests 20 and 21. In some halls, we need a seat structure called "retractable seating structure". This type of seat structure is particularly useful in places where the stage area is pseudo-changed. Therefore, in For various performances in the small stage area, the floor space available for the audience can be increased and additional seat structure is provided in this floor space: To meet the needs ---.----------- ---- order ------ ί I (please read the precautions on the back before filling in this page) This paper size is applicable to the Chinese Family Standard (CNS) Α4 specification (210Χ297mm) A7 B7 printed by the Quasi-Bureau Consumer Cooperative. V. Description of the invention (k) For performances in a larger stage area, this seat structure can be retracted when it is not needed. This retractable seat structure Each floor pole is pseudo-installed on the corresponding one of a series of pull-out drawers. The oil drawers are similar to the drawers of a wardrobe, except that when the drawers are fully extended, they pseudo-form a first-order tent Arrangement, each adjacent horizontal bar Dai is positioned in a stepped drawing of higher and higher levels In order to allow the drawers to be retracted, the entire seat structure needs to be able to fold down and lie down at a substantially horizontal position. Figure 9 depicts a The pivot 31 on the post 34 achieves this purpose. The first mechanism on the chair of FIGS. 1 to 8 of the present invention is to advance from the seat groove shape to the folded configuration, the seat structure is The left pattern in Figure 9 moves to the right pattern. The seat 37 is initially moved to a vertical position near the backrest 36 to place the seat structure in the configuration depicted in the middle pattern in Figure 9 The entire horizontal arm 33 is then pivoted around the pivot 31 to place the adjacent seat 37 and the backrest 36 in a substantially horizontal position depicted in the pattern on the right in Figure 9. This item is well known Those skilled in the art will realize that the pivot 31 can also move in the opposite direction to the direction depicted in Figure 9 so that the backrest 36 can be placed on the seat 37, rather than as in As depicted in Figure 9 below the seat 37. That is to say, the seat structure can Pivot forward instead of pivoting backwards as depicted. Picture 10 depicts another configuration for achieving the desired cabinet rotation action so that the retractable seat structure can be utilized. Here, the seat The part 47 and the backrest 46 are the same as before and are also installed on a horizontal bar 43. However, the paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210X297mm) ------ -· ----- ^ ^ ------ Order ------ ^ I (Please read the notes on the back before filling in this page) Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 310268 Α7 Β7 5. Description of Invention (Ί) Each branch 40 is provided with a pivot 41. In this configuration, the cross bar 43 still does not pivot, however, the seat 47 and the backrest 46 pivot about the pivot 41. In the configuration depicted on the right side of Figure 10, the seat 47 is pseudo on the backrest 46, and the configuration is held backwards < for those who are familiar with this skill, it will be clear that The pivot 41 can also move in the opposite direction to pivot the seat 47 and the backrest 46 forward, so the backrest 46 lies on the seat 47. The retractable seat structure of Figures 9 and 10 is preferably changed so that the seats 37, 47 are spring-loaded, so as long as no one is sitting on the seat, the seat rises to the substantially Vertical position. However | If an excited audience jumps up, it will cause a problem, that is, the seat under the audience has been raised and is unknown to him. Therefore, when the spectator sat down again, he did not pay attention to the seat and inadvertently fell heavily on the ground. To prevent this problem, the configuration image depicted in Figure 11 is provided. Here, the backrest 56 is pseudo-essentially the same as before * However, the pivots 13 include a stop (like rubber or other elastomer) made of elastically compressible material, which restricts the seat 57 The arc following the upward movement. Therefore, the seat 57 will stop at an angle in front of the vertical, typically 15 to 3 (Γ. In this case, if an excited audience jumps up, when the audience sits down again, the audience The buttocks will touch the front edge of the seat 57, thereby returning the seat 57 to the substantially horizontal position when the viewer returns to a sitting position. In this way, the possibility of accident Avoid. However, because of this elastically compressible material (not shown in the figure), by accepting -10-this paper scale, the Chinese national rate (CNS> A4 specification (210X297mm) is used at will ---.--- r ---- ^ one ------, order ------ {I (please read the precautions on the back before filling out this page) 310268 at B7 Printed by Beigong Consumer Cooperatives, Central Falcon Bureau, Ministry of Economic Affairs System V. Description of the invention (Which) to an appropriate force and can be crimped beyond its initial position, by folding the backrest 56 forward as depicted in Figure 11, the backrest 56 Can be placed in a substantially horizontal position, the image of which is low enough to allow the retractable seat structure to be used. Therefore, even the seat 57 The retractable seat structure can be used as if the distance is 15 to 30 ° vertically as depicted in the middle pattern in Figure 11. This ensures a safe configuration even if the retractable seat structure is used. In Figures 1 2 and 1 3, a further embodiment is depicted. Here, the backrests 66 are planted at 63 relative to the seats 67. The seats 67 are directly mounted on the bracket Frame 68. Each bracket 68 is pseudo-mounted on a wheeled leg 69 so that Meng can travel back and forth as seen in Figure 13. Figure 13 depicts the position of the fully extended bracket, and As shown in Figure 13, push it to the left and pseudo retractable. In Figure 12, the lower bracket 68 is retracted. When the corresponding bracket is pseudo extended The backrest 66 can pivot in a counterclockwise direction as seen in Fig. 13. Before retracting the bracket 68, the backrest 66 of the seats 67 mounted on the bracket 68 is like Rotate clockwise as seen in Figure 13. This allows the backrest 66 of each lower bracket to pass under the bracket that is tightly above it The main advantage of this embodiment is to reduce the height between adjacent brackets. The above description is only an embodiment of the present invention. For those who are familiar with this skill, various changes have not left the present invention. It can be completed under the scope. Component Labeling Table -11-(Please read the precautions on the back before filling in this page)-! This paper size is applicable to China National Standard (CNS) Α4 specification (210X297 mm) Ministry of Economic Affairs Printed A7 B7 by the Central Consortium Staff Consumer Cooperative V. Description of the invention (ή) 1 row 2 seat structure 3 horizontal arm 4 column 6 backrest 7 seat 9 yoke 10 branch 11 cadre 12 clamp 13 pivot 18 armrest 19 Headrest 20 Armrest 21 Armrest 31 Pivot 34 Pillar 33 Heng 37 Seat 36 Backrest 4 7 Seat 46 Backrest 43 Heng 40 Branch 41 Pivot 56 Backrest 57 Seat 66 Backrest 67 Seat 68 Support Frame 69 Legs-12-I--Γ .-- r ---- A: ------ order ------ ^ I (please read the precautions on the back before filling this page) This The paper size is in accordance with Chinese National Standard (CNS) A4 (210X297mm)