201250105 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種具棘輪機構之升降門裝置，尤指一 種適用於電動捲門、防火門' 防煙門、或逃生捲門之升降 門裝置。 【先前技術】 一般習知之電動鐵捲門，需靠電力來驅動上升或下 降，而當停電或因災故導致電力中斷或門機故障時，將難 以順利開啓或關閉，實爲不便。當然，目前電動捲門之技 術已開發有，透過機構的形式來驅動捲門上升或下降。故， 當電力中斷時仍可透過手動方式來驅動捲門，如利用手拉 鏈條來驅動捲門之傳動機構，以手動捲動捲門。然而，手 動操作形式不僅需耗費相當之體力與時間，故當面臨緊急 如火災逃生之情況時，手動操作捲門的方式將大大影響逃 生成功之機率。 此外，在防火門或防煙門之領域中，在捲門之一般使 用裝態爲上部拉下（半開）或全部拉下關閉（全關），以有效阻 隔火災發生所產生之濃煙或烈焰。然而，傳統防火門或防 煙門雖可任意抬升開啓，而其所運用的機構爲離合器。亦 即，傳統之防火門或防煙門皆採用離合器機構來控制電動 上升’或手動抬升，而離合器機構複雜且昂貴，故障維修 之機率高。 201250105 由此可知’如何達成一種簡易、構造單純、成本低廉， 且當面臨災故或電力中斷時，可任意抬升開啓之升降門裝 置，實在是產業上的一種迫切需要。 【發明內容】 本發明之主要目的係在提供一種具棘輪機構之升降門 裝置’俾能藉由電動機自動上升開啓，或在無其他動力支 援的情況下’可藉由手動輕易地抬升開啓捲門，且本發明 構造簡單、又成本低廉。 爲達成上述目的’本發明一種具棘輪機構之升降門裝 置’主要包括：一電動機、一棘輪機構'一捲門、以及一 控制器。其中，電動機包括有一轉動軸其包括有一驅動軸、 一軸套、及至少一離合構件，而驅動軸係連接於電動機之 轉動軸，軸套係同軸套設於驅動軸，至少一離合構件係設 置於驅動軸與軸套之間。其中，當軸套朝一自由轉向旋轉 時，軸套相對於驅動軸可自由旋轉；當驅動軸朝一驅動轉 向旋轉時，驅動軸驅動軸套一起旋轉。另外，捲門係連接 至棘輪機構之軸套，而控制器係電性連接電動機。其中， 控制器控制電動機驅動棘輪機構之驅動軸以驅動轉向旋 轉，以捲繞捲門上升；或者，於該捲門向上施一外力，促 使棘輪機構之軸套以自由轉向旋轉，以上推捲門。 又，本發明之驅動軸可包括有一驅動齒輪’至少一離 合構件可包括有至少一棘爪。其中，至少一棘爪之一端樞 設於軸套上，另一端嚙合於驅動齒輪。當軸套朝自由轉向 201250105 旋轉時’至少一棘爪之該另一端未嚙合於驅動齒輪而在其 上滑行；當驅動軸朝一驅動轉向旋轉時，至少一棘爪之另 一端嚙合於驅動齒輪。據此，本發明之棘輪機構可採齒輪 與棘爪嚙合之方式，當然不以此爲限，滾珠卡合、或其他 棘輪機構皆可適用於本發明。 此外’本發明之裝置可更包括有一鏈條，而棘輪機構 可更包括有一鏈輪，而鏈輪係固接於軸套，鏈條係連接於 鏈輪與捲門之間。當棘輪機構之驅動軸由電動機以驅動轉 向旋轉時，鏈輪帶動鏈條以捲繞捲門上升》當然，本發明 不以鏈輪與鏈條之傳動方式爲限，其他等效傳動方式如齒 輪、皮帶等亦可適用於本發明。 較佳的是，本發明可更包括有一電磁制動裝置，其可 連接於電動機之轉動軸，並電性連接控制器。控制器可控 制電磁制動裝置來制動轉動軸。其中，電磁制動裝置可包 括有一制動盤、及一電磁產生器，而制動盤固接於電動機 之轉動軸；控制器同步控制電動機停止運轉、及電磁產生 器產生磁性以吸附制動制動盤，以達剎車停止之功效，以 同步制動轉動軸。據此，本發明可透過電磁制動裝置來制 動且固定轉動軸，以將捲門固定爲全開啓、部分開啓、或 全關閉。其中，部分開啓可用來形成防火防煙門，而全關 閉時可透過電磁制動裝置啓動形成鎖附防盜裝置，避免宵 小任意推開捲門進入。 a 201250105 再者，本發明之棘輪機構可更包括有一轉向偵測模 組，可用於偵測棘輪機構之轉向，且轉向偵測模組係電性 連接控制器。其中，轉向偵測模組可包括有一被測盤、及 至少一方向偵測器，而被測盤係固接於棘輪機構之軸套， 且至少一方向偵測器係設置於被測盤之一側，並電性連接 控制器，以偵測被測盤之轉向。然而，當於捲門向上施加 外力，轉向偵測模組偵測到棘輪機構之軸套以自由轉向旋 轉時，控制器控制電動機驅動棘輪機構之驅動軸以驅動轉 向旋轉，來捲繞捲門上升。據此，本發明透過轉向偵測模 組偵測到使用者抬升捲門時，控制器將自動地控制電動 機，使其驅動捲門上升，而使用者無需繼續施力，達到省 力、及快速開啓之目的。 另外，本發明可更包括有一減速齒輪組，係同軸連接 於電動機之轉動軸與棘輪機構之驅動軸之間，用以調整電 動機之輸出轉速，亦即降低轉速以匹配棘輪機構、及捲門。 此外，本發明可更包括有一離心刹車機構，係同軸連接於 電動機之轉動軸上。據此，當捲門下降速度過快時，可透 過離心刹車機構來避免捲門落下之速度過快。 再且，本發明可更包括有一電池模組，係電性連接控 制器、及電動機，以提供控制器、及電動機電力。據此， 當未有電力時，如發生災故、或市電供應中斷時，可透過 平時已蓄滿電力之電池模組，供應予控制器、及電動機， 故，當未有電力供給時，本發明之裝置仍可順利運轉。此 201250105 外’本發明之捲門可包括有一預力彈簧，其係 預力於捲門’而捲門之重力大於上升預力。據 藉助捲門之自重力將自動下降關閉，故少了 — 門下降行程之耗能，達到更節能之功效。而且 抬升捲門時，又有預力彈簧之上升預力的幫助 輕微之上升推力，即可輕易地抬升捲門。 【實施方式】 以下實施例係以防火防煙門說明之，惟本 於防火防煙門，亦可適用於其他態樣之電動捲丨 首先，請先參閱圖1，圖1係本發明具棘輪 門裝置一較佳實施例之整體立體圖。如圖中所 例之升降門裝置主要包括：一·捲卩〗1、一電動榜 機構3、一電磁制動裝置4' 一控制器5、一減g —離心刹車機構8、以及一電池模組9。 請再一倂參閱圖2、及圖3，圖2係本發明一 之棘輪機構3、電磁制動裝置4、轉向偵測模組6 車機構8之局部剖視圖 '圖3係本發明一較佳實 分解圖。如圖中所示，電動機2包括有一轉動軸 輸出軸。而轉動軸21之一側同軸連接有—減速遠 用以調整電動機2之輸出轉速，亦即降低轉動軸 再者，棘輪機構3同軸連接於減速齒輪組7之輸 實施例所採用之減速齒輪組7爲一般常見利用 配所構成之減速機構。 施予一上升 此，本發明 般電動鐵捲 ，當欲手動 ，僅需施予 發明並不限 門設備。 機構之升降 示，本實施 ! 2、一棘輪 !齒輪組7、 較佳實施例 、及離心刹 施例之局部 2 1，即旋轉 &輪組7，其 I 21之轉速。 出軸71，本 大小齒輪匹 201250105 請再一倂參閱圖4，圖4係本發明一較佳實施例之棘輪 機構3之側視圖。本實施例之棘輪機構3提供有一自由轉向 Fd、及一驅動轉向Dd。詳言之，如圖所示本實施例之棘輪 機構3主要包括一鏈輪31、一驅動軸32、一軸套33、及三個 離合構件34,其中驅動軸3 2係同軸連接於減速齒輪組7之輸 出軸71，而軸套33係同軸套設於驅動軸32，且三個離合構 件34設置於軸套33與驅動軸32之間。在本實施例中，驅動 軸32包括有一驅動齒輪320，而離合構件34爲一棘爪341， 每一棘爪341之一端342樞設於軸套33上，另一端343嚙合於 驅動齒輪320之齒槽321，鏈輪31固接於軸套33。如圖4所 示，當驅動軸32往逆時針旋轉，或者鏈輪31往順時針旋轉 時’此時棘爪341之另一端343無法嚙合驅動齒輪320之齒槽 32 1而在其上滑行，將形成空轉，亦即本實施例所稱之自由 轉向Fd。 另外，當驅動軸32往順時·針旋轉，或者鏈輪31往逆時 針旋轉時，此時棘爪341之另一端343嚙合驅動齒輪320之齒 槽321，使驅動軸32與鏈輪31—體連動，亦即本實施例所稱 之驅動轉向Dd。換言之，自由轉向Fd係指棘輪機構3之軸套 33相對於電動機2之轉動軸21可自由旋轉之方向，而驅動轉 向Dd係與自由轉向Fd相反之旋轉方向。亦即，驅動轉向Dd 則係指電動機2之轉動軸21驅動棘輪機構3的軸套33旋轉之 方向。又，如圖1所示之捲門1，其係透過鏈條12連接至棘 輪機構3之鏈輪31。 201250105 再者，請再參閱圖3，在本實施例中棘輪機構3更包括 有一轉向偵測模組6，其用以偵測棘輪機構3之轉向。其中， 轉向偵測模組6包括有一被測盤6 1、二方向偵測器62、及一 固定架63，被測盤61係直接固接於軸套33，並可直接連動 於軸套33與鏈輪31。而二個方向偵測器62係係以相隔角度 90°之方式，設置於固定架63上，且位於被測盤61之一側。 另外，固定架63則固接於減速齒輪組7外部。據此，藉由方 向偵測器62感測被測盤6 1上之開槽6 1 1，來判斷被測盤6 1之 轉向，亦即判斷鏈輪3 1之轉向。 請再參閱圖2，電動機2之轉動軸21的另一側同軸連接 有一離心刹車機構8，其係常見之離心刹車組件。在本實施 例中，當捲門1下降速度過快時，離心刹車機構8將自動剎 車減速，來避免捲門1落下之速度過快。再且，在離心刹車 機構8之後側更組設有一電磁制動裝置4，其同樣同軸連接 於電動機2之轉動軸2 1。其中，電磁制動裝置4包括有一制 動盤41、及一電磁產生器42，而制動盤41固接於電動機2之 轉動軸2 1。 如圖5A所示，當電磁產生器42之內部線圈（圖中未示） 充電，將產生磁性以吸附制動盤4 1，使制動盤4 1及其同軸 連接之轉動軸21鎖住不動。而當欲上升或下降捲門時，電 磁產生器42鬆開制動盤4 1，使轉動軸2 1可自由旋轉，如圖 5 B所示。然而，本實施例所採用電磁制動裝置4，其可免除 201250105 一般傳統門機之複雜的離合器機構或機械式的刹車機構， 僅需微小電流即可達到完全制動之功效。 承上，本實施例可透過電磁制動裝置4來制動固定轉動 軸2 1 ’以將捲門1固定爲全開啓、部分開啓、或全關閉。其 中’部分開啓可用來形成防火防煙門，因火災之烈焰或濃 煙大多密佈於空間之上半部，而部分開啓之防火防煙門即 可有效阻擋烈焰及濃煙，且已開啓之下半部又可供人員逃 生。另外，全關閉時又可透過電磁制動裝置4來制動並鎖附 捲門1形成防盜捲門，避免宵小推開捲門1進入。 請再參閱圖1，圖中顯示有一控制器5，係電性連接電 動機2、轉向偵測模組6、電磁制動裝置4、以及電池模組9。 其中，電池模組9主要用於蓄電、及供電。當未有電力時， 如發生災故、或市電供應中斷時，可透過平時已蓄滿電力 之電池模組9，供應予控制器5、及電動機2，以供捲門1仍 可順利運作。 然而，當捲門1欲電動上升時，控制器5控制電動機2驅 動棘輪機構3之驅動軸32以驅動轉向Dd旋轉’來捲繞捲門1 使其上升。或者，人員以手動方式開啓’其可於捲門上向 上施予一外力F來上推捲門1’促使棘輪機構3之軸套33以自 由轉向Fd旋轉，可上推捲門1。再且’在本實施例中，當人 員於捲門1上向上施予外力？使其上升時’此時轉向偵測模 組6偵測棘輪機構3之軸套3 3朝自由轉向F d旋轉’而控制器5 控制電動機2驅動棘輪機構3之軸套33以驅動轉向Dd旋轉’ % -10· 201250105 並自動地帶動捲門1上升。據此’在本實施例中’當使用者 些微抬升捲門1時，轉向偵測模組6即偵測到，此時控制器5 將自動控制電動機2，使其驅動上升捲門1，使用者無需再 繼續施力，達到省力、及快速開啓之目的。 此外，本實施例之捲門1設有一預力彈簧1 1，其係施予 一上升預力f於捲門1，而捲門1之重力W大於上升預力f。據 此，欲關閉捲門1時，可藉助捲門1之重力自動下降關閉， 故少了一般電動鐵捲門下降行程之耗能，達到更節能之功 效。而且，當欲手動抬升捲門1時，又有預力彈簧11之上升 預力f的幫助，可輕易施力抬升捲門1。 上述實施例僅係爲了方便說明而舉例而已，本發明所 主張之權利範圍自應以申請專利範圍所述爲準，而非僅限 於上述實施例。 【圖式簡單說明】 圖1係本發明一較佳實施例之整體立體圖。 圖2係本發明一較佳實施例之棘輪機構、電磁制動裝 置、轉向偵測模組、及離心刹車機構之局部剖視圖。 圖3係本發明一較佳實施例之局部分解圖。 圖4係本發明一較佳實施例之棘輪機構之側視圖。 圖5A、5B係本發明一較佳實施例之電磁制動裝置作動 剖視圖。 【主要元件符號說明】 1 捲門201250105 VI. Description of the Invention: [Technical Field] The present invention relates to a lifting door device with a ratchet mechanism, and more particularly to a lifting door device suitable for an electric rolling door, a fire door 'smoke door, or an escape roller door . [Prior Art] It is generally known that an electric iron roll door is driven by electric power to drive up or down, and when power is cut off or a power failure or a door machine malfunctions due to a disaster, it is difficult to open or close smoothly, which is inconvenient. Of course, the current technology of electric roller shutters has been developed to drive the roll door up or down through the form of a mechanism. Therefore, when the power is interrupted, the roll door can still be driven manually, for example, by using a chain to drive the drive mechanism of the roll door to manually scroll the roll door. However, the manual operation mode not only requires considerable physical strength and time, so when faced with an emergency such as a fire escape, the manual operation of the rolling door will greatly affect the probability of successful escape. In addition, in the field of fire doors or smoke doors, the general use of the roll door is to pull down (half open) or pull down (closed) to effectively block the smoke or flame generated by the fire. . However, conventional fire doors or smoke doors can be arbitrarily raised and opened, and the mechanism used is a clutch. That is, conventional fire doors or smoke doors use a clutch mechanism to control electric lift or manual lift, while the clutch mechanism is complicated and expensive, and the probability of fault repair is high. 201250105 It can be seen that 'how to achieve a simple, simple structure, low cost, and when the disaster or power interruption, the lifting door device can be arbitrarily lifted and opened, it is an urgent need in the industry. SUMMARY OF THE INVENTION The main object of the present invention is to provide a lifting door device with a ratchet mechanism that can be automatically lifted open by a motor or, in the absence of other power support, can be easily lifted by hand. And the invention is simple in construction and low in cost. In order to achieve the above object, a lifting door device having a ratchet mechanism of the present invention mainly comprises: an electric motor, a ratchet mechanism, a roll door, and a controller. The electric motor includes a rotating shaft including a driving shaft, a sleeve, and at least one clutch member, and the driving shaft is coupled to the rotating shaft of the motor, the sleeve is coaxially sleeved on the driving shaft, and at least one clutch member is disposed on the rotating shaft Between the drive shaft and the sleeve. Wherein, when the sleeve rotates toward a free steering, the sleeve is free to rotate relative to the drive shaft; when the drive shaft rotates toward a drive, the drive shaft drives the sleeve to rotate together. In addition, the roll door is connected to the bushing of the ratchet mechanism, and the controller is electrically connected to the motor. Wherein, the controller controls the motor to drive the drive shaft of the ratchet mechanism to drive the steering rotation to wind up the roll door; or, apply an external force to the roll door to urge the sleeve of the ratchet mechanism to rotate freely, and push the roll door upward . Further, the drive shaft of the present invention may include a drive gear. At least one of the clutch members may include at least one pawl. Wherein one end of at least one pawl is pivoted on the sleeve and the other end is engaged with the drive gear. When the sleeve is rotated toward the freewheeling 201250105, the other end of the at least one pawl is not engaged with the drive gear to slide thereon; and when the drive shaft is rotated toward a drive, the other end of the at least one pawl is engaged with the drive gear. Accordingly, the ratchet mechanism of the present invention can take the form of engagement of the gear with the pawl, and of course not limited thereto, the ball engagement, or other ratchet mechanism can be applied to the present invention. Further, the apparatus of the present invention may further include a chain, and the ratchet mechanism may further include a sprocket, and the sprocket is fixed to the sleeve, and the chain is coupled between the sprocket and the rolling door. When the drive shaft of the ratchet mechanism is driven to rotate by the motor, the sprocket drives the chain to wind up the roll door. Of course, the present invention is not limited to the transmission mode of the sprocket and the chain, and other equivalent transmission modes such as gears and belts. The same can also be applied to the present invention. Preferably, the present invention further includes an electromagnetic brake device connectable to the rotating shaft of the motor and electrically connected to the controller. The controller controls the electromagnetic brake to brake the rotating shaft. Wherein, the electromagnetic brake device may include a brake disc and an electromagnetic generator, and the brake disc is fixed to the rotating shaft of the motor; the controller synchronously controls the motor to stop running, and the electromagnetic generator generates magnetism to adsorb the brake disc to reach The brake stops function to synchronously brake the rotating shaft. Accordingly, the present invention can be used to brake and secure the rotating shaft through the electromagnetic brake device to secure the roll door to full open, partially open, or fully closed. Among them, part of the opening can be used to form a fire and smoke prevention door, and when fully closed, the anti-theft device can be activated by the electromagnetic brake device to avoid any small push-opening of the roll door. a 201250105 Furthermore, the ratchet mechanism of the present invention may further include a steering detection module for detecting the steering of the ratchet mechanism, and the steering detection module is electrically connected to the controller. The steering detection module may include a tested disk and at least one direction detector, and the measured disk is fixed to the sleeve of the ratchet mechanism, and at least one direction detector is disposed on the tested disk. One side, and electrically connected to the controller to detect the steering of the disk under test. However, when an external force is applied to the roll door, the steering detection module detects that the sleeve of the ratchet mechanism is free to rotate, and the controller controls the motor to drive the drive shaft of the ratchet mechanism to drive the steering rotation to wind up the roll door. . Accordingly, the present invention detects that when the user lifts the roll door through the steering detection module, the controller automatically controls the motor to drive the roll door up, and the user does not need to continue to apply force, thereby achieving labor saving and quick opening. The purpose. Additionally, the present invention may further include a reduction gear set coaxially coupled between the rotational axis of the motor and the drive shaft of the ratchet mechanism for adjusting the output speed of the motor, i.e., reducing the rotational speed to match the ratchet mechanism and the rolling door. Further, the present invention may further include a centrifugal brake mechanism coaxially coupled to the rotating shaft of the motor. According to this, when the rolling door is descending too fast, the centrifugal brake mechanism can be used to avoid the speed at which the rolling door is dropped too fast. Still further, the present invention may further include a battery module electrically coupled to the controller and the motor to provide power to the controller and the motor. According to this, when there is no electric power, if a disaster occurs or the mains supply is interrupted, the battery module that is normally full of electric power can be supplied to the controller and the electric motor. Therefore, when there is no electric power supply, The device of the invention can still operate smoothly. The roll door of the present invention may include a pre-stress spring that pre-stresses the roll door and the weight of the roll door is greater than the rise pre-force. According to the self-gravity of the roll door, it will automatically drop and close, so there is less energy consumption of the door down stroke to achieve more energy-saving effect. Moreover, when the roll door is raised, the pre-stress of the pre-stress spring is applied to help lift the roll door easily with a slight upward thrust. [Embodiment] The following examples are described in the fire and smoke prevention door. However, the fireproof and smokeproof door can also be applied to other aspects of the electric winding. First, please refer to FIG. 1 , which is a ratchet of the present invention. An overall perspective view of a preferred embodiment of the door device. The lifting door device as exemplified in the figure mainly comprises: a roll 卩 1, a power list mechanism 3, an electromagnetic brake device 4 ′ a controller 5 , a minus g — a centrifugal brake mechanism 8 , and a battery module 9. Please refer to FIG. 2 and FIG. 3 again. FIG. 2 is a partial cross-sectional view of the ratchet mechanism 3, the electromagnetic brake device 4, and the steering detection module 6 of the present invention. FIG. 3 is a preferred embodiment of the present invention. Exploded map. As shown in the figure, the motor 2 includes a rotating shaft output shaft. One side of the rotating shaft 21 is coaxially connected with a deceleration gear for adjusting the output speed of the motor 2, that is, lowering the rotating shaft. The ratchet mechanism 3 is coaxially coupled to the reduction gear set of the embodiment of the reduction gear set 7. 7 is a speed reduction mechanism composed of common use and distribution. The application of the electric iron coil of the present invention, when it is intended to be manual, requires only the invention and is not limited to the equipment. The lifting and lowering of the mechanism, the present embodiment, 2, a ratchet wheel, the gear set 7, the preferred embodiment, and the portion 2 of the centrifugal brake, i.e., the rotating & wheel set 7, the speed of I 21 . Output shaft 71, presently sized gears 201250105 Please refer to Fig. 4, which is a side view of a ratchet mechanism 3 in accordance with a preferred embodiment of the present invention. The ratchet mechanism 3 of the present embodiment is provided with a free steering Fd and a drive steering Dd. In detail, the ratchet mechanism 3 of the present embodiment mainly includes a sprocket 31, a drive shaft 32, a sleeve 33, and three clutch members 34, wherein the drive shaft 32 is coaxially coupled to the reduction gear set. The output shaft 71 of the sleeve 73 is coaxially sleeved on the drive shaft 32, and the three clutch members 34 are disposed between the sleeve 33 and the drive shaft 32. In the present embodiment, the drive shaft 32 includes a drive gear 320, and the clutch member 34 is a pawl 341. One end 342 of each pawl 341 is pivotally mounted on the sleeve 33, and the other end 343 is meshed with the drive gear 320. The tooth groove 321 and the sprocket 31 are fixed to the sleeve 33. As shown in FIG. 4, when the drive shaft 32 rotates counterclockwise, or the sprocket 31 rotates clockwise, 'the other end 343 of the pawl 341 cannot engage the slot 32 1 of the drive gear 320 and slide thereon. The idling will be formed, that is, the free turn Fd referred to in this embodiment. In addition, when the drive shaft 32 rotates clockwise or the sprocket 31 rotates counterclockwise, the other end 343 of the pawl 341 engages with the slot 321 of the drive gear 320, so that the drive shaft 32 and the sprocket 31 are The body linkage, that is, the driving steering Dd referred to in this embodiment. In other words, the free steering Fd means that the bushing 33 of the ratchet mechanism 3 is freely rotatable with respect to the rotating shaft 21 of the motor 2, and the driving direction Dd is a rotating direction opposite to the free turning Fd. That is, the drive steering Dd means that the rotating shaft 21 of the motor 2 drives the direction in which the boss 33 of the ratchet mechanism 3 rotates. Further, the roll door 1 shown in Fig. 1 is connected to the sprocket 31 of the ratchet mechanism 3 through the chain 12. 201250105 Furthermore, please refer to FIG. 3 again. In the embodiment, the ratchet mechanism 3 further includes a steering detection module 6 for detecting the steering of the ratchet mechanism 3. The steering detection module 6 includes a measured disk 6 1 , a two-direction detector 62 , and a fixed frame 63 . The measured disk 61 is directly fixed to the sleeve 33 and directly coupled to the sleeve 33 . With the sprocket 31. The two direction detectors 62 are disposed on the holder 63 at an angle of 90° apart from one side of the panel 61 to be tested. In addition, the fixing frame 63 is fixed to the outside of the reduction gear set 7. Accordingly, the direction detector 62 senses the slot 6 1 1 on the disk 6 to be tested to determine the steering of the disk 6 1 to be tested, that is, to determine the steering of the sprocket 31. Referring to Fig. 2, the other side of the rotating shaft 21 of the motor 2 is coaxially coupled to a centrifugal brake mechanism 8, which is a conventional centrifugal brake assembly. In the present embodiment, when the lowering speed of the roll door 1 is too fast, the centrifugal brake mechanism 8 decelerates the automatic brake to prevent the speed at which the roll door 1 is dropped too fast. Further, an electromagnetic brake device 4 is further disposed on the rear side of the centrifugal brake mechanism 8, which is also coaxially coupled to the rotational shaft 21 of the motor 2. The electromagnetic brake device 4 includes a brake disc 41 and an electromagnetic generator 42, and the brake disc 41 is fixed to the rotating shaft 21 of the motor 2. As shown in Fig. 5A, when the internal coil (not shown) of the electromagnetic generator 42 is charged, magnetism is generated to attract the brake disk 41, and the brake disk 41 and its coaxially coupled rotating shaft 21 are locked. When it is desired to raise or lower the roll door, the electromagnetic generator 42 releases the brake disk 4 1, so that the rotary shaft 2 1 is freely rotatable as shown in Fig. 5B. However, the electromagnetic brake device 4 used in the embodiment can eliminate the complicated clutch mechanism or the mechanical brake mechanism of the conventional conventional door machine of 201250105, and only needs a small current to achieve the full braking effect. In the embodiment, the fixed rotating shaft 2 1 ' can be braked by the electromagnetic brake device 4 to fix the roll door 1 to be fully open, partially open, or fully closed. Among them, 'partial opening can be used to form fireproof and smokeproof doors. Because the flames or smoke of fire are mostly densely covered in the upper part of the space, the partially opened fire and smokeproof door can effectively block the flame and smoke, and it has been turned on. The half is also available for people to escape. In addition, when fully closed, the electromagnetic brake device 4 can be used to brake and lock the roll door 1 to form an anti-theft roll door, so as to prevent the roll door 1 from being pushed open. Referring to FIG. 1 again, a controller 5 is shown, which is electrically connected to the motor 2, the steering detection module 6, the electromagnetic brake device 4, and the battery module 9. Among them, the battery module 9 is mainly used for power storage and power supply. When there is no power, if a disaster occurs or the mains supply is interrupted, the battery module 9 that has been fully charged can be supplied to the controller 5 and the motor 2 so that the roll door 1 can still operate smoothly. However, when the roll door 1 is to be electrically raised, the controller 5 controls the motor 2 to drive the drive shaft 32 of the ratchet mechanism 3 to drive the turn Dd to rotate the roll door 1 to be raised. Alternatively, the person manually opens "the upper door F can be pushed up by applying an external force F to the roll door to urge the sleeve 33 of the ratchet mechanism 3 to rotate freely, and the roll door 1 can be pushed up. Further, in the present embodiment, when an individual applies an external force to the roll door 1 upwards? When it is raised, 'the steering detection module 6 detects that the sleeve 3 3 of the ratchet mechanism 3 rotates toward the free steering F d ' and the controller 5 controls the motor 2 to drive the sleeve 33 of the ratchet mechanism 3 to drive the steering Dd rotation. ' % -10· 201250105 and automatically drive the roll door 1 up. According to this, in the present embodiment, when the user slightly raises the roll door 1, the steering detection module 6 detects that the controller 5 will automatically control the motor 2 to drive the roll door 1 to be used. The person does not need to continue to exert force, achieving the purpose of labor saving and quick opening. Further, the roll door 1 of the present embodiment is provided with a pre-force spring 1 1 which applies a rising pre-force f to the roll door 1, and the gravity W of the roll door 1 is larger than the rising pre-force f. Accordingly, when the roll door 1 is to be closed, the gravity of the roll door 1 can be automatically lowered and closed, so that the energy consumption of the general electric iron roll door lowering stroke is reduced, and the energy saving effect is achieved. Further, when the roll door 1 is to be manually lifted up, and with the help of the pre-force force of the pre-force spring 11, the roll door 1 can be easily lifted. The above-described embodiments are merely examples for the convenience of the description, and the scope of the claims is intended to be limited by the scope of the claims. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an overall perspective view of a preferred embodiment of the present invention. 2 is a partial cross-sectional view showing a ratchet mechanism, an electromagnetic brake device, a steering detection module, and a centrifugal brake mechanism according to a preferred embodiment of the present invention. Figure 3 is a partial exploded view of a preferred embodiment of the present invention. 4 is a side elevational view of a ratchet mechanism in accordance with a preferred embodiment of the present invention. 5A and 5B are cross-sectional views showing the operation of an electromagnetic brake device in accordance with a preferred embodiment of the present invention. [Main component symbol description] 1 Roll door
-11 - 201250105 11 預 力 彈 簧 12 鏈 條 2 電 動 機 2 1 轉 動 軸 3 .棘 輪 機 構 3 1 鏈 輪 32 驅 動 軸 320 驅 動 齒 輪 321 齒 槽 33 軸 套 34 離 合 構 件 34 1 棘 爪 342,343 端 4 電 磁 制 動 裝 置 4 1 制 動 盤 42 電 磁 產 生 器 5 控 制 器 6 轉 向 偵 測 模 組 61 被 測 ώη, 611 開 槽 62 方 向 偵 測 器 63 固 定 架 7 減 速 齒 輪 組 ss -12 - 201250105 7 1 輸 出 軸 8 離 心 剎 車機構 9 電 池 模 組 F 上 升 外 力 f 上 升 預 力 Fd 白 由 轉 向 Dd 驅 動 轉 向 W 重 力 -13 --11 - 201250105 11 Pre-stress spring 12 Chain 2 Motor 2 1 Rotary shaft 3. Ratchet mechanism 3 1 Sprocket 32 Drive shaft 320 Drive gear 321 Groove 33 Bushing 34 Clutch member 34 1 Pawl 342, 343 End 4 Electromagnetic brake 4 1 Brake Disc 42 Electromagnetic Generator 5 Controller 6 Steering Detection Module 61 Measured η, 611 Slotted 62 Directional Detector 63 Mounting Frame 7 Reduction Gear Set ss -12 - 201250105 7 1 Output Shaft 8 Centrifugal Brake Mechanism 9 Battery module F rising external force f rising pre-force Fd white driven by steering Dd steering W gravity-13 -