M314616 下端23 閉鎖器30 支架31 保險片32 彈性件40 内固定端41 底座42 外開放端43 凸緣50 擔止板面51 八、新型說明： 【新型所屬之技術領域】 本創作係有關一種防火閘門結構，尤指一種溫度感應 自動關閉式防火閘門結構，當現場發生火災時，藉溫度感 應式閉鎖器在超過溫度限值可自動崩解，以釋放閘門上已 折疊收合之多葉片式遮幕體向下展開而迅速關閉閘門者。 【先前技術】 按’防火/排煙閘門係廣泛應用於各種場所之空調及 消防系統中，其係隨系統規劃而配合空調或防火設計，其 中包含一種防火閘門i如圖丨所示，其一般是安裝於風管 2穿越兩室間3之間隔間牆4之通風口 5上使用，而在平 時’该防火閘門1是保持常開狀態，供空氣可隨系統規劃 而在不同室間3之間自由流通；而當某一室間3現場發生 火災如圖1所示之中間室間3，而且其溫度又昇高至大於 系統規劃的預設值時，則該防火閘門i須能快速關閉，藉 以阻擋火勢沿著風管2而從隔間牆4上通風口 5流竄蔓延 至其他室間3。 、又風官2内之空氣流通情形可隨系統規劃而分為靜態 流通及動態流通’前者之靜態流通係自然流通，其風管2 M314616 内之風速甚微而如一般通風效果，因此對通風口 5處風管 2中之防火閘門1葉片不會產生太大的風阻力或影響其葉 片的關閉動作·，而後者之動態流通則係利用送風機配合驅 動，致風管2内之風速或風力較強，也因而對風管2中之 防火閘門1葉片在關閉動作時會產生風阻力。因此，當該 防火閘門1要快速關閉以阻擋火勢沿著風管2蔓延時，不 、論是靜態流通及動態流通，均須確保其能自動快速關閉， •否則容易造成火勢蔓延而失去該防火閘門之防火功能。 • 又，依目前市場態勢而言，該防火閘門1之設計不但須滿 足結構簡化、成本降低的市場需求，且尚須兼顧使用功能 良好並能符合消防防護設備相關法規之規定，然，習用之 防火閘門卻無法或難以同時兼顧上述多重條件；本創作即 係針對習知防火閘門之缺點而加以創新設計者。 【新型内容】 本創作主要目的乃在於提供一種溫度感應自動關閉式 •防火閘門結構，其係由一外框架、一遮幕體及溫度感應式 閉鎖器組成，其中，該外框架係架設在室間之間的隔間牆 上供風管穿過之通風口上；該遮幕體係藉數片葉片由上向 下逐片依序排列並以平行樞接方式串聯組成一可縱向折疊 之多片式遮幕獐，其可依序折疊收合在外框架内上端面處 而形成開通狀態，或向下展開以遮閉外框架之内面通道而 形成關閉狀態；該閉鎖器係用以連結並閉鎖在已折疊收合 在外框架内上端面之遮幕體的下方，以箝制遮幕體而防止 其向下展開，並可隨系統規劃而選擇其自動崩解之溫度限 M314616 值；藉上述結構，平時該閉鎖器可箝制折疊之遮幕體以使 其保持常開狀態，而當現場發生時，該閉鎖器可在溫度超 過限值時自動崩解，以使遮幕體之數片葉片因本身重力自 動下落展開而達成關閉狀態，藉以簡化防火閘門結構、降 低成本，並兼可提昇防火閘門之防火效率。 本創作再一目的乃在於提供一種溫度感應自動關閉式 防火閘門結構，其係在遮幕體之最底葉片與外框架之内底 面之間增設具有彈性回復力之彈性件，如在外框架之内底 面上固設一蝸型薄片彈簧，使其開放端向上拉伸而連接在 最底葉片上，使遮幕體之數片葉片依序折疊收合在外框架 内上端面處而形成開通狀態時，該最底葉片因蝸型薄片彈 酱作用而保持向下彈性回復力，使當閉鎖器因溫度超過而 自動崩解時，遮幕體之數片葉片可藉本身重力及該彈性件 之向下彈性回復力而快速向下展開以自動關 增進遮幕體之向下_力道”抗風μ之風阻力\ = 保防火閘門在緊急時能快速且自動關閉的使用功效。 彳作又-目的乃在於提供—種溫度感應自動關閉式 防ΐ閘？結構’其進一步在方形外框架之内部通道之前、 後=的環周緣邊設置一適#高度（寬度）之凸緣，以遮 效果並有效提效;以增進遮幕體的遮蔽 防火二Γί於提供—種溫度感應自動關閉式 :二1門、、“冓，其進一步在方形外框架之内部通道 邊且位於凸緣之外方處設置一播止板面，且該播止板面 M314616 之高度比凸緣大，也比一葉片之高度（寬度）大，以遮蔽 遮幕體之最底葉片與外框架，内底面之間的間隙，而可增進 遮幕體之最底葉片相對於外框架之内底面的遮蔽效果，藉 以有效提昇防火閘門之防火效率。 【實施方式】 • 為使本創作更加明確詳實，茲列舉較佳實施例並配合 -下列圖示，將本創作之結構及其技術特徵詳述如後·· 請參考圖2、3、4、5 ,其分別係本創作一實施例 在開通狀態之組合立體圖和侧面透視圖、以及在關閉狀態 之組合立體圖和侧面透視圖，本創作之防火閘門1主要包 含· 一方形外框架1〇、一遮幕體20、及溫度感應式閉鎖器 30，其中，該方形外框架10之長寬比例及大小係配合風管 2設計，使方形外框架1〇可以截面方式架設在隔間牆4上 供風管2穿過之通風口 5上如圖1所示，並使方形外框架 10之内面空間構成一可供空氣流通之通道11。 該遮幕體20係由數片相等尺寸之葉片21由上向下依序 平行排列且各葉片21之上、下端22、23各以樞接方式串聯 組成，也就是利用數片相等尺寸之葉片21由上向下依序平 行排列且相鄰二葉片21中上葉片21的下端面23係與下葉片 21之上端面22以平行樞接方式串聯組成一可縱向折疊之多 片式遮幕體20 ;又相鄰二葉片21之對應上、下端22、23之 間的樞接方式可利用一端（22/23 )彎製成型為一内套筒 形狀，而對應另一端（23/22 )則彎製成型為一相配合之 •M314616 外套筒形狀，再使内、外二套筒（22、23)相互套合而構 成一樞軸如圖3、5所示，使遮幕體2〇之數片葉片21可依 序交叉折疊，合在外框架1〇之内上端面12處如圖2、3所 示，也就疋交又折疊收合在通道丨丨的上端，以使通道^形 成開通狀態；或向下降落並展開而遮蔽住通道丨丨以形成關 閉狀態如圖4、5所示。 戎溫度感應式閉鎖器3〇係可隨使用需要如遮幕體2〇之 幅度大小而設置一組或數組，如圖2、3所示係設計一組 閉鎖器30，其係用以跨設並閉鎖在已折疊收合在外框架1〇 内上端面12之遮幕體20 (即數片葉片21)的下方如圖3所 示’藉以阻止遮幕體2〇因本身重力而向下掉落；而實施時 如圖3所示，本創作之溫度感應式閉鎖器3〇係包含前、後 端各一支架31及一保險片32 ,其中，該保險片32或稱為溫 度感應器，可選擇利用一長片體結構，使其前、後端分別 與前、後端之支架31連結，而該前、後端支架31係分別固 设在外框架1 〇之上端面12的前、後二外緣邊上，使長片體 形狀之保險片$2可前、後向跨設並閉鎖在已折疊收合在外 框架10内上端面12之遮幕體20的下方；又該保險片32之結 構型態並不限制，其主要作用係當周圍環境溫度未超過保 險片32預設之可自動崩解溫度限值時，該保險片32可保持 足夠結構強度以配合前、後端支架31而箝制住遮幕體2〇， 防止遮幕體20因本身重力向下掉落；但當周圍環境溫度超 過該保險片32預設之可自動崩解溫度限值時，該保險片32 局部如長片體之中間段33就會自動熔解以形成脆弱處並崩 解，換言之’一保險片32之連結（1 ink )強度各具有一可 M314616 自動崩解之溫度限值，而一般保險片製造廠商係隨使用材 料、結構設計或自動崩解溫度限值之不同而備具各種不同 規格供選擇使用，又一般自動崩解溫度限值在攝氏以 下者大部分用於空調系統，而在攝氏74t以上者大部分用 於消防系統，以本創作之防火閘門1而言，保險片32之自 動崩解溫度限值可設定在攝氏74。〇至120 °C之間某一溫 •度’或設定在攝氏121 °C至140 °C之間某一溫度或設定在 .攝氏141 °C至177 °C之間某一溫度（如攝氏141 °c );而 •本創作案設計時，可隨系統規劃並依消防防護設備相關法 規之規定（如火災防護設備規範），而選用適當崩解溫度 限值之保險片32，如選擇自動崩解溫度限值在攝氏121 至177 C之間$ —溫度（如攝氏141 °C )的保險片32，則 只要現場環境逼近或超過攝氏141 °c，保險片32即自動崩 解，而達成閉鎖器30原設定之使用功效。 藉上述結構，平時可藉該具有保險片32之閉鎖器3〇以 箝制遮幕體20而保持通道11在常開狀態如圖2、3所示； 當現場發生火災且溫度又超過保險片32之自動崩解限值 時，該閉鎖器30即可由保險片32之中間段33自動崩解而斷 開成兩半如圖4、5所示，藉以同時釋放遮幕體2〇，使遮 幕體20可藉本身重力作用而迅速向下關閉通道丨丨如圖4、 5所示，藉以声效防止煙火蔓延並提昇防火閘門之防火效 率。 請再參考圖6、7、8、9，其分別係本創作防火閘 門1另一實施例在開通狀態之組合立體圖和側面透視圖、 M314616 以及在關閉狀態之組合立體圖和侧面透視圖，本創作之防 火閘門1可進一步在遮幕體20之最底葉片21a與外框架10 之内底面13之間增設一組或左右對稱數組具有彈性回復力 之彈性件40，藉以使遮幕體20之數片葉片21除可藉本身重 力向下掉落而展開外，並可另再藉該彈性件4〇之向下彈性 回復力而增加遮幕體20向下展開之關閉力道；而實施時如 •圖6、7、8、9所示，其係左右對稱各設一組彈性件 -40，且該彈性件4〇可選擇利用一堝型薄片彈簧結構，使該 φ 彈性件4〇 (蜗型薄片彈簧）之内固定端41固設在外框架10 之内底面13上的底座42上，並使其外開放端43向上彈性拉 伸而連接在遮幕體20之最底葉片20a上，使遮幕體20之數 片葉片21依序折疊收合在外框架1〇内上端面12處而形成開 通狀態時，該最底葉片20a因受彈性件40 (蜗型薄片彈 簧）作用而保持向下之彈性回復力，使當閉鎖器3〇自動崩 解時’遮幕體20之數片葉片21可藉本身重力及彈性件40之 向下彈性回復力而快速向下展開並關閉住通道丨丨，藉以增 •進遮幕體20向下關閉時的抗風阻力，而確實保証防火閘門 1在緊急時能板速且自動關閉的使用功效。 請參考圖2〜5所示，本創作防火閘門1可進一步在 方形外框架10之内部通道11的前、後端環周緣邊設置一適 當南度（寬度）之凸緣50，使遮幕體2〇向下關閉後之通道 Π的環周緣邊形成一道擋止板作用，藉以遮蔽遮幕體2〇與 外框架10内面之間的空隙，而可增進遮幕體2〇相對於外框 架10之内部通道11的遮蔽效果，以有效提昇防火閘門之防 火效率。 9 M314616 再請參考圖6〜9所示，本創作防火閘門i可進一步 在方形外框架10之内部通道11的下緣邊上並位於凸緣50的 外方’設置一擋止板面50，該擋止板面50之高度（寬度） 比凸緣50大，也比一葉片21之高度（寬度）大，使在遮幕 體20向下關閉後之通道11的下緣邊前方形成一道擋止板作 用’藉以遮蔽遮幕體20之最底葉片20a與外框架10内底面 、13之間的間隙，而可增進遮幕體2〇之最底葉片2〇3相對於 •外框架10之内底面13的遮蔽效果，而有效提昇防火閘門之 _ 防火效率。 以上所述僅為本創作的較佳實施例，對本創作而言僅 疋說明性的，而非限制性的；本專業技術人員理解，在本 創作權利要求所限定的精神和範圍内可對其進行許多改 變’修改，甚至等效變更，但都將落入本創作的保護範圍 内。 【圖式簡單說明】 _圖1係本創作應用在建築物之空調或消防系統中一使用狀 態示意圖。 圖2係本創作一實施例在開通狀態之組合立體示意圖。 圖3係圖2之侧面透視示意圖。 圖4係圖2在關閉狀態之立體示意圖。 圖5係圖4之侧面透視示意圖。 圖6係本創作另一實施例在開通狀態之組合立體示意圖。 圖7係圖6之侧面透視示意圖。 圖8係圖6在關閉狀態之立體示意圖。 •M314616 圖9係圖8之侧面透視示意圖。 【主要元件符號說明】 防火閘門1 風管2 室間3 隔間牆4 通風口 5 、 外框架10 通道11 上端面12 内底面13 遮幕體20 葉片21 最底葉片21a 上端22 下端23 閉鎖器30 支架31 保險片32 中間段33 彈性件40 内固定端41 底座42 外開放端43 凸緣50 檔止板面51M314616 lower end 23 latch 30 bracket 31 fuse 32 elastic member 40 inner fixed end 41 base 42 outer open end 43 flange 50 support plate surface 51 VIII, new description: [new technical field] This creation is related to a fire prevention The gate structure, especially a temperature-sensing self-closing fire gate structure, can automatically disintegrate when the fire occurs in the field, and the temperature-inductive latch can automatically disintegrate beyond the temperature limit to release the multi-blade cover that has been folded and folded on the gate. The curtain body is deployed downwards to quickly close the gate. [Prior Art] According to the 'fire/smoke gate system, it is widely used in air-conditioning and fire-fighting systems in various places. It is designed with air conditioning or fire protection according to system planning. It includes a fire gate i as shown in Figure ,. It is installed on the vent 5 of the partition wall 4 of the air duct 2 passing through the two compartments 3, and in the usual time, the fire shutter 1 is kept in a normally open state, and the air can be arranged in different rooms according to system planning. Free circulation; and when a fire in a room 3 occurs in the middle compartment 3 as shown in Figure 1, and its temperature rises above the preset value of the system plan, the fire gate i must be able to close quickly. In order to block the fire along the duct 2, the vent 5 from the partition wall 4 flows to the other room 3 . The air circulation situation in the wind officer 2 can be divided into static circulation and dynamic circulation according to the system planning. The static circulation of the former is natural circulation, and the wind speed in the air duct 2 M314616 is as small as the general ventilation effect, so the ventilation The blade of the fire shutter 1 in the air duct 2 at the mouth 5 does not generate too much wind resistance or affects the closing action of the blade, and the dynamic circulation of the latter is driven by the blower to cause wind speed or wind in the duct 2 It is stronger, and thus the wind resistance of the fire shutter 1 in the duct 2 is generated when the shutter is closed. Therefore, when the fire damper 1 is to be quickly closed to prevent the fire from spreading along the air duct 2, it is said that it is static circulation and dynamic circulation, and it must be ensured that it can be automatically and quickly closed, otherwise it is easy to cause the fire to spread and lose the fire prevention. The fire protection function of the gate. • In addition, according to the current market situation, the design of the fire gate 1 not only needs to meet the market demand for simplified structure and low cost, but also needs to take into account the functions of the fire protection equipment and comply with the relevant regulations of the fire protection equipment. Fire gates cannot or cannot simultaneously take into account the multiple conditions mentioned above; this creation is an innovative design for the shortcomings of conventional fire doors. [New content] The main purpose of this creation is to provide a temperature-sensing automatic shut-off and fire-proof gate structure, which is composed of an outer frame, a curtain body and a temperature-sensing latch, wherein the outer frame is erected in the room. The partition wall between the partition wall is provided with a vent through which the air duct passes; the curtain system is arranged in a plurality of blades from top to bottom and arranged in parallel in a parallel pivotal manner to form a longitudinally foldable multi-piece a shutter, which can be folded and folded in the upper end surface of the outer frame to form an open state, or downwardly to cover the inner surface passage of the outer frame to form a closed state; the locker is used for joining and locking in the folded state Folding under the curtain body of the upper end surface of the outer frame to clamp the curtain body to prevent it from unfolding downward, and selecting the temperature limit M314616 of the automatic disintegration according to the system planning; by the above structure, the lock is usually used The device can clamp the folded curtain body to maintain its normally open state, and when the scene occurs, the stopper can automatically disintegrate when the temperature exceeds the limit, so that the blade of the mask body is Gravity automatically drops to expand and reach a closed state, in order to simplify the fire gate structure, cost reduction, and efficiency and can improve the fire gate of fire. A further object of the present invention is to provide a temperature-sensing self-closing fire shutter structure, which is provided with an elastic member having an elastic restoring force between the bottommost blade of the curtain body and the inner bottom surface of the outer frame, such as within the outer frame. A volute leaf spring is fixed on the bottom surface, and the open end is stretched upward to be connected to the bottommost blade, so that the plurality of blades of the curtain body are folded and folded in the upper end surface of the outer frame to form an open state. The bottommost blade maintains a downward elastic restoring force due to the action of the volute sheet squeegee, so that when the stopper automatically disintegrates due to the temperature exceeding, the blade of the curtain body can be gravity by itself and the downward direction of the elastic member Elastic recovery force and rapid downward deployment to automatically close the downward direction of the curtain body _ force road "wind resistance of wind resistance μ" \ = the use of the fire gate can be quickly and automatically closed in an emergency. It is provided that a temperature-sensing self-closing anti-smashing brake structure is further provided with a flange of a height (width) at the circumference of the ring before and after the inner passage of the square outer frame to cover the effect. Effectively improve the effect; to improve the shielding of the curtain body. 于 于 于 — — — — — — 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 温度 : : : : : : : 二 二 二 二 二 二A broadcast stop surface is arranged at the side, and the height of the broadcast surface M314616 is larger than the flange and larger than the height (width) of one blade to shield the bottommost blade and the outer frame of the curtain body, and the inner bottom surface The gap between the two can improve the shielding effect of the bottommost blade of the curtain body relative to the inner bottom surface of the outer frame, thereby effectively improving the fireproof efficiency of the fire gate. [Embodiment] • In order to make the creation more clear and detailed, the preferred embodiment is exemplified and the following diagrams are used to describe the structure and technical features of the creation as follows. Please refer to Figures 2, 3 and 4, 5, which is a combined perspective view and a side perspective view of an embodiment in the open state, and a combined perspective view and a side perspective view in the closed state, the fire gate 1 of the present invention mainly comprises a square outer frame 1 , a The shielding body 20 and the temperature inductive latch 30, wherein the square outer frame 10 has a length to width ratio and a size matched with the air duct 2, so that the square outer frame 1 can be erected on the partition wall 4 in a cross section. The vent 5 through which the duct 2 passes is as shown in Fig. 1, and the inner space of the square outer frame 10 constitutes a passage 11 through which air can flow. The mask body 20 is composed of a plurality of blades 21 of equal size arranged in parallel from top to bottom, and the upper and lower ends 22 and 23 of each blade 21 are connected in a pivotal manner, that is, a plurality of blades of equal size are used. 21 is arranged in parallel from top to bottom and the lower end surface 23 of the upper blade 21 in the adjacent two blades 21 and the upper end surface 22 of the lower blade 21 are connected in series in a parallel pivotal manner to form a longitudinally foldable multi-piece curtain body. 20; The pivotal connection between the corresponding upper and lower ends 22, 23 of the adjacent two blades 21 can be bent into one inner sleeve shape by one end (22/23) and corresponding to the other end (23/22). Then, the bending shape is a matching M314616 outer sleeve shape, and then the inner and outer sleeves (22, 23) are sleeved to each other to form a pivot as shown in Figs. 3 and 5, so that the shielding body The plurality of blades 21 of the two cymbals can be folded in sequence, and are assembled in the upper end surface 12 of the outer frame 1 如图 as shown in Figs. 2 and 3, and are folded and folded at the upper end of the channel , to make the channel ^ forming an open state; or falling down and unfolding to cover the channel 丨丨 to form a closed state as shown in FIGS.戎The temperature-sensing latch 3 can be set as a set or array according to the needs of the screen body. As shown in Figure 2 and Figure 3, a set of latches 30 is designed. And being locked under the cover body 20 (ie, the plurality of blades 21) which has been folded and folded in the upper end surface 12 of the outer frame 1 as shown in FIG. 3, thereby preventing the curtain body 2 from falling downward due to its own gravity. As shown in FIG. 3, the temperature-sensing latch 3 of the present invention includes a front bracket 31 and a cutout 32, wherein the fuse 32 is called a temperature sensor. The front and rear ends are respectively connected to the front and rear end brackets 31, and the front and rear end brackets 31 are respectively fixed on the front and rear end faces 12 of the outer frame 1 〇. On the outer edge side, the long piece-shaped fuse piece $2 can be erected in front and rear and locked under the cover body 20 which has been folded and folded on the upper end surface 12 of the outer frame 10; and the structure of the security piece 32 The type is not limited, and its main function is when the ambient temperature does not exceed the preset autodisintegration temperature of the fuse 32. When the limit value is used, the slab 32 can maintain sufficient structural strength to fit the front and rear end brackets 31 to clamp the curtain body 2 〇 to prevent the curtain body 20 from falling downward due to its own gravity; however, when the ambient temperature exceeds the When the fuse 32 is preset to automatically disintegrate the temperature limit, the portion 32 of the blank 32, such as the long piece, is automatically melted to form a weak portion and disintegrate, in other words, a link of the fuse 32 (1) Ink) each has a temperature limit of M314616 auto-disintegration, and the general fuse manufacturer is available in various specifications depending on the material used, structural design or auto-disintegration temperature limit, and generally The automatic disintegration temperature limit is mostly used in air conditioning systems below Celsius, and most of them are used in fire protection systems above 74t Celsius. For the fire gate 1 of this creation, the automatic disintegration temperature limit of the fuse 32 Can be set at 74 Celsius. 〇A certain temperature between 120 °C or set at a temperature between 121 °C and 140 °C or set at a temperature between 141 °C and 177 °C (eg Celsius 141) °c); and • This design case can be designed with the system and according to the relevant regulations of fire protection equipment (such as fire protection equipment specifications), and the appropriate disintegration temperature limit of the insurance piece 32, such as the choice of automatic collapse The fuse 32 with a temperature limit between 121 and 177 C and a temperature (such as 141 ° C) will automatically collapse when the field environment approaches or exceeds 141 ° C, and the lock is achieved. The original setting of the device 30 is effective. With the above structure, the shutter 3 with the slab 32 can be used to clamp the curtain body 20 to keep the channel 11 in the normally open state as shown in FIGS. 2 and 3; when a fire occurs in the field and the temperature exceeds the slab 32 When the automatic disintegration limit is reached, the latch 30 can be automatically disintegrated by the middle section 33 of the rupture disc 32 and broken into two halves as shown in Figs. 4 and 5, thereby simultaneously releasing the mask body 2 〇 to make the curtain The body 20 can quickly close the channel downward by its own gravity, as shown in Figures 4 and 5, by means of sound effects to prevent the spread of fireworks and improve the fire protection efficiency of the fire gate. Please refer to FIG. 6, 7, 8, and 9, which are respectively a combined perspective view and a side perspective view of the other embodiment of the fire shutter 1 in the open state, M314616, and a combined perspective view and a side perspective view in the closed state. The fire shutter 1 can further add a set or a pair of symmetrically arranged elastic members 40 having an elastic restoring force between the bottommost blade 21a of the curtain body 20 and the inner bottom surface 13 of the outer frame 10, so that the number of the mask body 20 is increased. The blade 21 can be unfolded by gravity downwardly, and can be further increased by the downward elastic restoring force of the elastic member 4 to increase the closing force of the curtain body 20 downwardly; 6, 7, 8, and 9, which are respectively provided with a set of elastic members-40 in a left-right symmetry, and the elastic member 4〇 can be selected by using a 薄片-shaped leaf spring structure, so that the φ elastic member 4〇 (snail type) The inner fixed end 41 of the leaf spring is fixed on the base 42 on the inner bottom surface 13 of the outer frame 10, and the outer open end 43 is elastically stretched upward to be connected to the bottommost blade 20a of the curtain body 20 to cover The plurality of blades 21 of the curtain body 20 are sequentially folded and folded in the outer frame 1〇 When the inner upper end surface 12 is formed in an open state, the bottommost blade 20a maintains a downward elastic restoring force due to the action of the elastic member 40 (scrolled leaf spring), so that the shutter is blocked when the latch 3 is automatically disintegrated. The plurality of blades 21 of the body 20 can be quickly deployed downwardly by the gravity and the downward elastic restoring force of the elastic member 40 to close the channel 丨丨, thereby increasing the wind resistance when the curtain body 20 is closed downward. It does ensure that the fire gate 1 can be used in a plate speed and automatically shut down in an emergency. Referring to FIGS. 2 to 5, the fire shutter 1 of the present invention can further provide a suitable south (width) flange 50 on the front and rear end edges of the inner passage 11 of the square outer frame 10 to make the curtain body 2 〇 The downwardly closed channel edge of the channel 形成 forms a stop plate to shield the gap between the mask body 2 〇 and the inner surface of the outer frame 10, thereby enhancing the shielding body 2 〇 relative to the outer frame 10 The shielding effect of the internal passage 11 is to effectively improve the fireproof efficiency of the fire gate. 9 M314616 Referring again to FIGS. 6-9, the fire shutter i can be further provided with a stop plate surface 50 on the lower edge of the inner passage 11 of the square outer frame 10 and outside the flange 50. The height (width) of the stopper plate surface 50 is larger than the flange 50 and larger than the height (width) of one blade 21, so that a barrier is formed in front of the lower edge of the passage 11 after the shutter body 20 is closed downward. The function of the stop plate is to shield the gap between the bottommost blade 20a of the curtain body 20 and the bottom surface 13 of the outer frame 10, thereby enhancing the bottom blade 2〇3 of the curtain body 2 relative to the outer frame 10. The shielding effect of the inner bottom surface 13 effectively improves the fire prevention efficiency of the fire gate. The above description is only the preferred embodiment of the present invention, and the present invention is merely illustrative and not restrictive; those skilled in the art understand that it can be within the spirit and scope defined by the present inventive claim. Many changes, modifications, and even equivalent changes, are made, but they fall within the scope of this creation. [Simple description of the diagram] _ Figure 1 is a schematic diagram of the use of this creation in the air conditioning or fire protection system of a building. Fig. 2 is a perspective view showing the combination of an embodiment of the present invention in an open state. Figure 3 is a side perspective view of Figure 2. Figure 4 is a perspective view of Figure 2 in a closed state. Figure 5 is a side perspective view of Figure 4. Fig. 6 is a perspective view showing the combination of another embodiment of the present invention in an open state. Figure 7 is a side perspective view of Figure 6. Figure 8 is a perspective view of Figure 6 in a closed state. • M314616 Figure 9 is a side perspective view of Figure 8. [Main component symbol description] Fire damper 1 Duct 2 Inter-chamber 3 Compartment wall 4 Vent 5, Outer frame 10 Channel 11 Upper end surface 12 Inner bottom surface 13 Curtain body 20 Blade 21 Bottom blade 21a Upper end 22 Lower end 23 Locker 30 bracket 31 fuse 32 intermediate section 33 elastic member 40 inner fixed end 41 base 42 outer open end 43 flange 50 stop plate surface 51