200831772 九、發明說明： 【發明所屬之技術領域】 本發明係與電動升降門有關 十向5之，尤指一種電動升 降門之安全逃生裝置，其係針對利 心 馬達驅動升降的門扇（如： 鐵捲門、車庫門）在遇到危急且 研电無法電控操作門扇上升時 的緊急逃生裝置。 【先前技術】200831772 IX. Description of the invention: [Technical field of the invention] The present invention relates to an electric lifting door, in particular, a safety escape device for an electric lifting door, which is directed to a door fan that is driven by a motor to lift and lower (eg: Iron roll door, garage door) Emergency escape device in case of crisis and the electric power can not be electrically controlled to operate the door leaf. [Prior Art]
升降式啟閉的門扇大量地安裝 文衣在店鋪、車庫等場合，並使 用升降式門扇保護門戶安全，為 马挺阿門扇升降的方便性，此類 升降式門扇多以馬達驅動升降 、 向在馬達需要電力供應始能運 轉驅動門扇升降的情形下，一旦 一矢去電力供應，馬達無法運轉 也就無法驅使⑽升降，尤其是μ、地料料發生時，供 電錢往往失去作用，此時，無法開啟上升的升降門反將形成 人員逃生的阻礙。 籲 解决电動升卜門在無電力的供應時將產生無法逃生的問 題i遂有人提出針對電動升降門在失去動力時，依然能有最後 扇拉起的發明，本國專利公告M26l585號專利，揭露 -種「鐵捲門斷電手控捲動構造」，其主要係在無電力狀態下， 可藉由手動切換機構將切換為手控模式，利用手動操作手動捲 輪即可連動齒輪組促使鐵捲門升降，然而一般在火災、地震等 事故發生時，每一秒都將會是生死關頭，因此轉換為手動操作 拉起鐵捲門，往往有緩不濟急之弊。 200831772 本國專利公告553309號專W，揭露一種「安全逃生電動鐵 捲門、構改良」’其主要係利用彈簧館存驅動鐵捲門上升所需能 量，在緊急的情況下，啟動安全裝置即可捲動鐵捲門上升若干 南度’使得鐵捲門下方形成—個可以逃生的出口，但由於受到 彈簧的作動行程限制，鐵捲門上升的高度有限，使得所形成的 逃生出口很小，不方便逃生，且在啟動安全裝置的瞬間，由於 彈簧作用力的瞬間釋放’使得鐵捲門會以暴衝的方式拉起，若 此時有人員緊鄰在鐵捲門旁，容易形成安全上的疑慮，另外，。 就此習知技術而言，彈簣所提供的彈性作用力，必需要大於鐵 捲門自重及鐵捲門作動時的摩擦阻力，始能有效地拉升鐵捲門 發揮作用’如此-來’在正常狀態下，鐵捲門放下致使彈菩受 _時，為克服彈菁的作用力，馬達必需保持對鐵捲門輸出相 田的扭力，否則，鐵捲門將無預警地受彈簧作用而自動上升， 不但造成平日使用的耗電量高，且彈簧長期受壓迫變形，容易 產生彈性疲乏現象’反使得需要彈簧發揮作用時，其彈力無法 有效驅使鐵捲門上升，可靠度不足。 是故’針對上述缺弊，本案發明人遂積極進行研究發明， 經多方試驗後終得創新且可供產f利用之本發明者。 【發明内容】 本發明主要目的在於提供—種電動升降門之安全逃生裝 置，其藉由配重塊在高、低位差之間的位能、動能轉換，利用 200831772 重力駆使升降Η作動，俾供提高使用安全性及可靠度者。 本發明係-種電動升降門之安全逃生裝置，主要包含 * 累杯，β亥螺桿橫向樞設於電動升降門頂部 桿並藉一傳動輪組與升降門之主軸雙向連動者， 一引導元件； 空間處，該螺 該螺桿並螺套 ¥軌’料軌與該螺桿平行而設，該引導元件與該導軌Lifting and closing doors and doors are installed in a large number of places in shops, garages, etc., and the use of lifting doors to protect the safety of the portal is the convenience of lifting and lowering the door of the horse. The lifted doors are mostly driven by motors. When the motor needs power supply and can start to drive and drive the door fan to rise and fall, once the power supply is available, the motor can't run and it can't drive (10) to lift and lower. Especially when μ and ground materials occur, the power supply often loses its effect. Opening the rising lift gate will form a hindrance to the escape of personnel. Resolving the problem that the electric lift door will not escape when there is no power supply. I have proposed that the electric lift door can still have the last fan pull when the power is lost. The patent of the national patent announcement M26l585 discloses - "Iron Rolling Door Power-off Hand Control Rolling Structure", which is mainly in the no-power state, can be switched to the manual mode by manual switching mechanism, and the manual gear reel can be used to interlock the gear set to promote iron. Rolling doors are lifted and lowered. However, in the event of an accident such as a fire or an earthquake, every second will be a matter of life and death. Therefore, switching to manual operation to pull up the iron-rolled door often has the disadvantage of being unsatisfactory. 200831772 National Patent Announcement No. 553309 specializes in the disclosure of a "safe escape electric iron roll door, structural improvement". It mainly uses the spring library to drive the energy required to drive the iron roll door. In an emergency, the safety device can be activated. Rolling the iron roll door up a number of south degrees makes an exit that can be escaped under the iron roll door, but due to the action of the spring, the height of the roll door rise is limited, so that the escape exit formed is small, no Easy to escape, and at the moment of starting the safety device, due to the momentary release of the spring force, the iron roll door will be pulled up in a violent manner. If there is a person next to the iron roll door, it is easy to form a safety concern. In addition,. As far as this prior art is concerned, the elastic force provided by the magazine must be greater than the self-weight of the iron-rolled door and the frictional resistance of the iron-rolled door when it is actuated, so that the iron-rolled door can be effectively pulled up to function as such. Under normal conditions, when the iron roll door is lowered to cause the bomb to be _, in order to overcome the force of the elastic crystal, the motor must maintain the torque of the output of the iron roll door. Otherwise, the iron roll door will automatically rise due to the spring action without warning. Not only does it cause high power consumption on weekdays, but the spring is subject to compression and deformation for a long time, and it is prone to elastic fatigue phenomenon. When the spring is required to function, its elastic force cannot effectively drive the iron roll door to rise, and the reliability is insufficient. Therefore, in response to the above-mentioned shortcomings, the inventor of this case actively carried out research and invention, and after the multi-party test, the inventor who was innovative and available for production. SUMMARY OF THE INVENTION The main object of the present invention is to provide a safety escape device for an electric lift door, which utilizes the weight of the weight between the high and low differentials to convert the potential energy and the kinetic energy, and uses the 200831772 gravity to actuate the lift raft. Improve the safety and reliability of use. The invention relates to a safety escape device for an electric lifting door, which mainly comprises: * a tired cup, a β-helical screw laterally pivoted on the top of the electric lifting door and a two-way linkage of the transmission wheel set and the main shaft of the lifting door, a guiding element; At the space, the screw and the screw-shaped "rail" track are arranged in parallel with the screw, the guiding element and the guide rail
相鄰4該導執對刻導元件形助對限制，俾供該引導元件 沿該導軌軸向往復位移者； 一捲收器，該捲收器與該引導元件相接； —配重塊，该配重塊吊設於-繫索-端，該繫索另一端繞 經一滑輪轉向與該捲收器相接，並藉該捲收器捲繞收取該繫 索’俾供該繫索保㈣張狀態，並使該引導元件與該配重塊相 互牽引作動者；及 疋位态，5亥疋位器具有一啟動桿、一抵摯桿，其中，該 抵掣桿底端與該啟動桿樞接，該抵料頂端斜向延伸抵寧該配 重塊底緣，據以支持定位該配重塊於高處，俾供儲備摯動升降 門開啟之位能者； 據此’藉由解除妓位器對該配重塊的支持作用，使該配 重塊下落亚拉引該引導元件位移，即連動該螺桿旋轉，進而引 動升降門之主軸旋轉，俾供開啟升降門者。 為使本發明之技術手段及其所達成之目的、功效，得以更 200831772 ‘ ’ ¥ 進一步地清楚顯現，茲舉較佳可行的具體實施例並配合圖式詳 述於后。 . 【實施方式】 ~ 請參閱圖一，本發明電動升降門之安全逃生裝置較佳實施 例，主要包含一螺桿（23)、一傳動輪組、一導軌（21)、一配重 塊（31)、一定位器（5)及一捲收器（4)所構成。 一升降門組，該升降門（11)之開啟與關閉係受馬達（12)控 ® 制，其升降門（11)之一侧則再設有從動輪（13)，使該從動輪（13) 與後述之主動輪（24)聯結後能受轉動，該升降門（丨丨）係設置於 主軸（14)上，並受馬達（12)連接帶動，且該升降門（u)其主軸 (14)二側分別設有一軸承（15)，該軸承（15)用以支撐與轉動該 主軸（14); 一線性移動組（2)，其包括有導軌（21)、引導元件（22)、螺 桿（23)、及主動輪（24)，該引導元件（22)係延導執（21)移動， ® 該引導元件（22)係螺套於螺桿（23)上，而該主動輪（24)與該螺 桿（23)固接，當引導元件（22)受後述之配重塊（31)牽引移動 時’能經由引導元件（22)使螺桿（23)做旋轉運動，以使主動輪 (24)轉動從動輪（13)，進而轉動升降門（11)，並帶動升降門（u) 開啟。 一儲能釋放裝置，包括有：配重塊（31)，係提供一重量， 以經由後述之繫索（32)帶動引導元件（22);捲收器（4)，係設置 200831772 於後述之引導元件（22)上，以捲收與釋放後述之繫索（32);繫 索（32)，其一端係與捲收器（4)連接，而另一端則與配重塊（31) • 連接，定位器（5)，係提供支撐與釋放配重塊（31)。 . 其中，該螺桿（23)横向樞設於電動升降門頂部空間處，其 兩端分別藉軸承（15)與升降門樞接，該螺桿（23)一端藉該主動 輪（24)與升降門之主軸（14)連動，據使該主軸（14)受馬達（12) 驅動旋轉’進而捲動升降門（u)啟閉時，得以連動該螺桿（23) ® 旋轉，該從動輪（13)與該主動輪（24)係由一迴圈狀之傳動元件 (6)所組成，其中，該傳動元件（6)圈套該從動輪（13)與該主動 輪（24)，俾供該螺桿（23)與該主軸（14)彼此雙向連動者；該導 軌（21)與該螺桿（23)平行而設，該螺桿（23)螺套一引導元件 (22)，該引導元件（22)與該導軌（21)兩側相鄰，以藉由該導執 (21)對該引導元件（22)形成相對限制，使該引導元件（22)無法 隨同該螺桿（23)旋轉，俾供該引導元件（22)沿該導軌（21)軸向 # 往復位移者；該捲收器（4)與該引導元件（22)相接。 該配重塊（31)藉由一繫索（32)吊設於電動升降門一側’該 繫索（32)繞經一滑輪（33)之輪緣轉向與該捲收器（4)相接，並藉 該捲收器（4)捲繞收取該繫索（32)，使該繫索（32)得以保持繃張 狀態，據此，該引導元件（22)與該配重塊（31)彼此得以相互牽 引作動，該定位器（5)具有一啟動桿（51)、一抵摯桿（52)及一承· 托塊（53)，其中，該啟動桿（51)及該承托塊（53)固設於配重塊 200831772 (31)位移路徑外’軌，桿（52)底端與該啟動桿（51)枢接，該 抵掣桿（52)斜向搭靠於該承托塊（53)頂緣，據使该柢擎桿⑽ -頂端斜向延伸抵掣該配重塊（31)底緣，並藉該承托塊⑽對該 ，抵掣桿（52)形成支持，據此定位該配重塊⑶）於高處，俾供儲 備摯動該升降門⑴）上升開啟之位能者；另，該敢動桿（51)與 該抵掣桿（52)間設有扭力彈菁⑽（如圖二所示），據使抵擎桿 ⑽常態保持對該配重塊（31)形成抵掣狀態者。 # 請參閱圖三、圖四，該捲收器⑷係由-盒體⑷）、-中軸 (42)、一捲盤（43)及一蝸捲彈簣（44)所組成，其中，該盒體（41) 於周壁貫穿一過孔（411)，使該繫索（32)得以通過該過孔（411) 進入遠金體（41)内部，該中軸（42)立設於該盒體（41)内，且該 中軸（42)兩端分別與該盒體（41)頂、底端樞接，該捲盤（43)與 该中轴（42)軸接’該繫索（32)末端與該捲盤相接，藉由該中轴 (42)與該捲盤（43)連動旋轉，而得以配合該引導元件（22)之位 ® 移收、放該繫索（32)，俾供該繫索（32)保持繃張狀態者；請配 合參閱圖五’該盒體（41)内部於鄰近外緣處設有一固定銷 (412)，該蝸捲彈簧（44)外端與該固定銷（412)鉤接，其内端與 該中軸（42)相接，據此，當該中軸（42)旋轉，即連動該蝸捲彈 簧（44)彈性變形，進而利用該蝸捲彈簧（44)提供彈性作用力驅 使該中軸（42)旋轉，俾供捲收該繫索（32)者。 裝設有本發明第一實施例之電動升降門，於該馬達（12)啟 11 200831772 動驅使該主軸（14)旋轉下放該升降門（11)關閉門戶時，該主軸 (14)通過該從動輪（13)驅使該螺桿（23)旋轉，則該引導元件（22) - 位移並拉引該配重塊（31)上升至高處，此時，藉由該定位器（5) ^ 對該配重塊（31)形成抵掣’即可將該配重塊（31)定位於高處而 不下落（如圖一所示狀態），當該馬達（12)反向驅使該主軸（14) 旋轉捲收該升降門（11)開啟門戶時，該螺桿（23)反向旋轉，則 該引導元件（22)反向位移，此時，該配重塊（31)受到該定位器 (5)之抵掣’仍停留於高處並不下落，該捲收器（4 )即可將一部 份之該繫索（32)捲收，使該繫索（32)於該引導元件（22)與該配 重塊（31)間仍保持繃張狀態，故而，本發明藉由該定位器（5)使 忒配重塊（31)得以留置於高處，除了第一次關閉時，該馬達（a) 必舄耗費電此將邊配重塊（31)拉升至高處外，在平日一般情形 下，電動升降門的運作，並不需要耗費電能支持該配重塊（31)。 當該升降門（11)下放關閉門戶後，若遇到緊急事件，且電 力供應中斷，無法利用該馬達（12)提供動力開啟門戶時，使用 者扳動該抵掣桿（52)解除對該配重塊（31)的支撐，該配重塊（3d 遂由於自身重量作用而下落，當該配重塊（31)由高處下落時， 其位能遂轉換為動能，並透過該繫索（32)拉引該引導元件（22) 位移，該引導元件（22)位移即可連動該螺桿（23)旋轉，進而通 過1動輪（13)與主動輪（24)驅使該主軸（η)旋轉而捲收該升降 門⑴），達到開啟Η戶向外逃生之目的，而由於該配重塊（31) 12 200831772 下落時’其下落速度係由低速逐漸加速，故該升降門（11)的捲 收並不會如習知技術一般，發生暴衝現象，使用安全性高，且 由於該配重塊（31)係藉重力作用下落驅使升降門作動，即便經 過長期使用，仍然反覆作動，可靠度高。 再者，丽述較佳實施例之傳動輪組，亦可將鍊輪、傳動元 件分別置換為皮帶輪、皮帶，亦可將鍊輪、傳動元件構成的傳 動輪組置換為齒輪所構成的傳動構造，舉凡此等置換，對於熟 習相關技術人士而言’乃為可輕易想見之變化，並未脫離本發 明之範®壽。 综前所述，本發明藉由首創之構成，而得以充份滿足預期 目的且功效卓著’申請前又未見有相同、近似者公知在先，誠 符合發明專利之要件，爰依法提出申請。 【圖式簡單說明】 圖一係本發明較佳實施例之剖視示意圖。 圖—係本發明較佳實施例扭力彈簧之平面圖。 圖三係本發明較佳實施例捲收器之左侧視圖。 圖四係本發明較佳實施例捲收器之轴向剖視圖。 圖五係本發明較佳實施例蝸棬彈簧之俯視囷 【主要元件符號說明】 11升降門 12馬達 13 200831772 從動輪 主轴 軸承 線性移動組 導軌 引導元件 螺桿 主動輪 配重塊 繫索 滑輪 捲收器 盒體 過孔. 固定銷 中軸 捲盤 蝸捲彈簧 定位器 啟動桿 抵摯桿 200831772 5 3承托塊 54扭力彈簧 6傳動元件Adjacent 4, the guide defines a shape assisting pair for the guiding element to be reciprocally displaced along the guide rail; a retractor that is in contact with the guiding element; The weight is hoisted at the - lanyard end, and the other end of the lanyard is turned to be connected to the retractor via a pulley, and is wound by the retractor to receive the lanyard '俾 for the tying protection (4) a state of tension, and causing the guiding element and the weight to pull each other; and the 疋 position, the 5 疋 器 具有 has a starting lever, an ejector lever, wherein the bottom end of the urging rod and the starting lever Pivoting, the top end of the resisting material extends obliquely to the bottom edge of the weight, thereby supporting positioning of the weight in a high place, and the position of the lifting door is opened by the reserve; The support device supports the weight, so that the weight of the weight is pulled and the displacement of the guiding element is reversed, that is, the screw is rotated, and then the spindle of the lifting door is rotated to open the lifting door. In order to make the technical means of the present invention and the objects and effects thereof achieved, it is further clear that the specific embodiments are better illustrated and described in conjunction with the drawings. [Embodiment] ~ Referring to Figure 1, a preferred embodiment of the safety escape device for the electric lift door of the present invention mainly comprises a screw (23), a transmission wheel set, a guide rail (21), and a weight (31). ), a positioner (5) and a retractor (4). A lifting door group, the opening and closing of the lifting door (11) is controlled by a motor (12), and one side of the lifting door (11) is further provided with a driven wheel (13) to make the driven wheel (13) ) can be rotated after being coupled with a driving wheel (24), which is disposed on the main shaft (14) and driven by the motor (12), and the main shaft of the lifting door (u) 14) Two bearings (15) are respectively arranged on the two sides, the bearing (15) is for supporting and rotating the main shaft (14); a linear movement group (2) comprising a guide rail (21), a guiding element (22), The screw (23) and the driving wheel (24), the guiding element (22) is extended by the guiding (21), the guiding element (22) is screwed onto the screw (23), and the driving wheel (24) Fixing with the screw (23), when the guiding member (22) is pulled by the weight (31) to be described later, 'the screw (23) can be rotated by the guiding member (22) to make the driving wheel ( 24) Rotate the driven wheel (13) to rotate the lifting door (11) and drive the lifting door (u) to open. An energy storage release device comprising: a weight (31) for providing a weight to drive the guiding element (22) via a lanyard (32) to be described later; and a retractor (4), which is set forth in 200831772, which will be described later. a guiding element (22) for winding and releasing a lanyard (32); a lanyard (32) having one end connected to the retractor (4) and the other end to the counterweight (31). The connection, positioner (5), provides support and release weights (31). Wherein, the screw (23) is laterally pivoted at the head space of the electric lifting door, and the two ends of the screw are respectively pivotally connected to the lifting door by a bearing (15), and the driving wheel (24) and the lifting door are borrowed from one end of the screw (23) When the main shaft (14) is linked, the spindle (14) is driven to rotate by the motor (12), and when the rolling lifting door (u) is opened and closed, the screw (23) is rotated, and the driven wheel (13) is rotated. The driving wheel (24) is composed of a loop-shaped transmission element (6), wherein the transmission element (6) encloses the driven wheel (13) and the driving wheel (24) for the screw ( 23) a bidirectional linkage with the main shaft (14); the guide rail (21) is disposed in parallel with the screw (23), the screw (23) is threaded by a guiding element (22), and the guiding element (22) The guide rails (21) are adjacent to each other to form a relative restriction on the guiding member (22) by the guide (21), so that the guiding member (22) cannot rotate along with the screw (23), and the guiding member is provided (22) A reciprocating displacement along the axial direction of the guide rail (21); the retractor (4) is in contact with the guiding member (22). The weight (31) is hoisted on the side of the electric lift door by a lanyard (32). The lanyard (32) is turned around the rim of a pulley (33) to the retractor (4). And receiving the lanyard (32) by the retractor (4) to maintain the lanyard (32) in a stretched state, whereby the guiding member (22) and the weight (31) The locator (5) has a starting lever (51), an urging rod (52) and a bearing block (53), wherein the starting lever (51) and the supporting member The block (53) is fixed on the weight of the weight block 200831772 (31) outside the displacement path, and the bottom end of the rod (52) is pivotally connected to the starting rod (51), and the urging rod (52) is obliquely placed against the bearing The top edge of the support block (53) is configured such that the top end of the load block (10) extends obliquely against the bottom edge of the weight (31), and the support block (10) supports the support rod (52). According to this, the weight (3) is positioned at a height, and the reserve is used to move the lift door (1)) to rise and open; and the dart (51) and the ram (52) are arranged There is a torsion bullet (10) (as shown in Figure 2), according to the normal state of the shaft (10) Holding the counterweight (31) is formed by abutting latch state. # Referring to Figure 3 and Figure 4, the retractor (4) is composed of a - box (4), a middle shaft (42), a reel (43) and a scroll magazine (44), wherein the reel (44) The body (41) penetrates a through hole (411) in the peripheral wall, so that the lanyard (32) can enter the inside of the far gold body (41) through the through hole (411), and the central shaft (42) is erected on the box body ( 41), and the two ends of the central shaft (42) are respectively pivotally connected to the top and bottom ends of the casing (41), and the reel (43) is axially coupled with the central shaft (42) 'the end of the lanyard (32) And the reel is connected, and the middle shaft (42) is rotated in conjunction with the reel (43), so as to be engaged with the guiding member (22), the lanyard (32) is removed and placed. The lanyard (32) is kept in a stretched state; please refer to FIG. 5'. The inside of the box body (41) is provided with a fixing pin (412) at an adjacent outer edge, and the outer end of the scroll spring (44) is fixed with the fixing The pin (412) is hooked, and the inner end thereof is in contact with the central shaft (42). Accordingly, when the central shaft (42) rotates, the scroll spring (44) is elastically deformed, and the scroll spring is utilized. Providing an elastic force to drive the central shaft (42) to rotate, 俾The retractor lanyard (32) persons. The electric lift gate according to the first embodiment of the present invention is installed, and the main shaft (14) passes through the slave motor (12) when the motor (12) is driven to rotate the main shaft (14) to lower the portal (11). The moving wheel (13) drives the screw (23) to rotate, and the guiding element (22) - displaces and pulls the weight (31) to a high position, at which time the positioning device (5) ^ The weight (31) forms an abutment '', and the weight (31) can be positioned at a high position without falling (as shown in FIG. 1), when the motor (12) drives the spindle (14) in reverse. When the lifting door (11) is opened and the portal is opened, the screw (23) is reversely rotated, and the guiding member (22) is reversely displaced. At this time, the weight (31) is subjected to the positioning device (5). Reaching 'still stays high and not falling, the retractor (4) can retract a portion of the lanyard (32) so that the lanyard (32) is associated with the guiding element (22) The weight (31) remains stretched. Therefore, the present invention allows the weight (31) to be placed at a high position by the positioner (5), except for the first time the motor is turned off. a) power consumption will hereby shoe edge weights (31) of the outer pulled up to high, in the general case weekdays, electric lift door operation, power consumption is not required to support the weight block (31). When the lifting door (11) is lowered to close the portal, if an emergency event occurs and the power supply is interrupted, the motor (12) cannot be used to provide power to open the portal, the user pulls the urging lever (52) to release the Supporting the weight (31), the weight (3d 下落 falling due to its own weight, when the weight (31) falls from a height, its potential energy is converted into kinetic energy and transmitted through the lanyard (32) pulling the guiding element (22) to displace, the guiding element (22) is displaced to rotate the screw (23), and the main shaft (n) is driven to rotate by the first moving wheel (13) and the driving wheel (24). And the lifting door (1) is retracted to achieve the purpose of opening the door to escape, and since the weight (31) 12 200831772 falls, its falling speed is gradually accelerated by the low speed, so the lifting door (11) The retraction does not occur as in the conventional technology, and the rushing phenomenon occurs. The safety of use is high, and since the weight (31) is driven by gravity to drive the lifting door to operate, even after long-term use, it is still repetitive and reliable. High degree. Furthermore, the drive wheel set of the preferred embodiment can also replace the sprocket and the transmission component with a pulley and a belt, and can also replace the transmission wheel set composed of the sprocket and the transmission component with a transmission structure formed by the gear. Any such replacement is a change that can be easily imagined by those skilled in the art, without departing from the scope of the present invention. As mentioned above, the present invention can fully satisfy the intended purpose and achieve outstanding effects by the composition of the first creation. 'There is no prior knowledge before the application, and the prior party is well known. It is in line with the requirements of the invention patent, and the application is made according to law. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic cross-sectional view of a preferred embodiment of the present invention. Figure - is a plan view of a torsion spring in accordance with a preferred embodiment of the present invention. Figure 3 is a left side view of the retractor of the preferred embodiment of the present invention. Figure 4 is an axial cross-sectional view of the retractor of the preferred embodiment of the present invention. Figure 5 is a top view of a preferred embodiment of the present invention. [Main component symbol description] 11 Lifting door 12 motor 13 200831772 Driven wheel spindle bearing linear moving group guide member Leading screw driving wheel counterweight collinear pulley retractor Box body through hole. Fixing pin middle shaft reel scroll spring positioner starting rod ejector rod 200831772 5 3 support block 54 torsion spring 6 transmission element