1288201 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種開門系統，特別是指一種車庫門 之電動開門系統。 1 【先前技術】 車庫門開門系統（Garage Door Operator，GDO)通常包括 一馬達、一傳動機構、一台車（Tr〇lley)及一連接臂等元件， 用以開啟或關閉一車庫門。目前車庫門開門系統中最常見 是以與齒輪嚙合之鏈條或帶齒皮帶來做為傳動機構。其主 要缺點在於，製造過程複雜、造價昂貴且組裝步驟繁多。 此外，以鏈條為傳動機構之車庫門開門系統容易在開門或 關門的過程中產生噪音。再者，由於重量因素，必須提供 較大的馬力才能驅動鏈條傳動系統。 此外’某些最新的車庫門開門系統採用了進階的自動 化學習功能，以確保操作時具有較高的安全性。所有具有 某種程度安全性之無線控制裝置也會具有傳輸碼學習過程 。理想的解決方案是盡可能—次提供所有功能，並能以無 .線及安全的方式來操作所有功能。然、而，前提是使用者必 須能在所有過程中得知適當的信號。例如，若功能數不多 ，則以發光二極體（Light Emitting Di〇de，led)來發出信號 會疋通系之簡易解決方案。然而，若是自動化裝置裝設在 使用者的視線之外，或程序包括許多步驟，便會有問題。 而且，/有錯誤信號產生時，會有需翻閱使用手冊以解讀 LED信號之問題發生。因Λ，若為緊急料，則此種發出 1288201 #號之方式便不適當。此外，, 饮日日顯不态（Liquid Crystal Display，LCD)以及J:它顯亍古斗、人 — 、員不方式也會遭遇同樣的視線問題 。若裝置是裝設在挑高較高的庫 皁居之天化板下，便必須使 用特殊設備才能看到信號。 門之電動開門系統之 因此，有必要針對上述習知車庫 兩大缺失尋求解決之道。 【發明内容】1288201 IX. Description of the Invention: [Technical Field] The present invention relates to a door opening system, and more particularly to an electric door opening system for a garage door. 1 [Prior Art] Garage Door Operator (GDO) usually includes a motor, a transmission mechanism, a vehicle (Tr〇lley) and a connecting arm to open or close a garage door. At present, the most common type of garage door opening system is the chain or toothed belt that meshes with the gears as the transmission mechanism. The main disadvantages are the complexity of the manufacturing process, the high cost and the numerous assembly steps. In addition, the garage door opening system with the chain as the transmission mechanism easily generates noise during the process of opening or closing the door. Furthermore, due to the weight factor, it is necessary to provide a large horsepower to drive the chain drive system. In addition, some of the latest garage door opening systems use advanced automated learning to ensure high security during operation. All wireless control devices with some level of security also have a transmission code learning process. The ideal solution is to provide all the features as much as possible, and to operate all functions in a wireless and secure manner. However, the premise is that the user must be able to know the appropriate signal in all processes. For example, if the number of functions is small, a light-emitting diode (Light Emitting Di〇de, led) will be used to signal the simple solution. However, if the automated device is installed outside the user's line of sight, or if the program includes many steps, there is a problem. Moreover, when an error signal is generated, there is a problem that needs to be read through the manual to interpret the LED signal. Because of this, if it is a emergency material, the way of issuing the 1288201 ## is not appropriate. In addition, the Liquid Crystal Display (LCD) and the J: it is also an old-fashioned, human-, and non-personal way to encounter the same line of sight. If the unit is installed under a high-profile slab, it must use special equipment to see the signal. Therefore, it is necessary to find a solution to the two lack of the above-mentioned conventional garage. [Summary of the Invention]
因此，本發明之目的，即在提供一種電動開門系統， 可用以開啟或關閉一車庫門’並可避免習知以鏈條或帶齒 皮帶做為傳動裝置時具有製造過程複雜、造價昂貴及組裝 步驟繁多等缺點。 於是，本發明電動開門系、统包含一傳動裝置、一台車 (一T，及一連接臂。該傳動裝置包括一馬達、一驅動輪、 一間接輪、-張力輪及—傳動索。該馬達用以使該驅動輪 產生旋轉運動。該驅動輪、間接輪及張力輪於一直線上間 U ’且該間接輪位於該驅動輪與張力輪之間。該驅動 輪之外周面上具有至少一間隔排列之第一環槽。該間接輪 之外周面上具有複數間隔排列之第二環槽。該張力輪之外 周面上具有第二環槽。該傳動索環繞於該至少一第一環 槽、该等第二環槽及該第三環槽上。該傳動索之-部分是 以一螺旋路徑環繞於第一環槽及第二環槽上。於是，該傳 動索可封閉地環繞於該驅動輪、間接輪及張力輪之外周面 上，且該傳動索之各部分可彼此不互相接觸，藉以使得該 驅動輪可依序驅動該間接輪及張力輪。該台車設於該間接 l2882〇l 輪間之其中—段傳動索上。該連接臂-端連接至 車且另知連接至該車庫門。因此，該驅動輪可依 序驅動該間接輪、傳動索、台車及連接臂，因而可開啟或 關閉該車庫門。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 、下配5參考圖式之較佳實施例的詳細說明中，將可清楚 的呈現。 參閱圖1、7、8,本發明電動開門系統之一較佳實施例 包含一殼體1、部分設於該殼體丨内之一傳動裝置2、一台 車（Trolley)3、一連接臂4、一撐架（Bracket)81、二懸掛元件 82、83、一軌道84，以及設於該殼體丨内之一主板、、一 轉速計（Rotation sensor)6與一語音單元7。 如圖1所示，本發明電動開門系統之較佺實施例是以 該二懸掛元件82、83安裝於一天花板92下，且連設至一 車庫門91。該傳動裝置2之另一部分設於該軌道84上。該 台車3固設於該傳動裝置2上，因而可在該執道84上移動 。至於’該連接臂4之一端樞設於該台車3，而另一端則夢 由該擇架81樞設於該車庫門91。於是，該傳動裝置2可依 序驅動該台車3及連接臂4,因而可開啟或關閉該車庫門 91 〇 參閱圖1〜6 ’该傳動裝置2包括一馬達21、一驅動輪 22、一間接輪23、一張力輪24及一傳動索25。該馬達21 用以提供該驅動輪22進行旋轉運動所需之動力。如圖3所 7 1288201 :’該驅動輪22、間接輪23及張力輪24於一直線上間隔 设置，且該間接輪23位於該驅動輪22與張力輪24之間。Accordingly, it is an object of the present invention to provide an electric door opening system that can be used to open or close a garage door and to avoid the complexity of manufacturing processes, costly construction, and assembly steps when using a chain or toothed belt as a transmission. A lot of shortcomings. Therefore, the electric door opening system of the present invention comprises a transmission device, a vehicle (a T, and a connecting arm. The transmission device comprises a motor, a driving wheel, an indirect wheel, a tension wheel and a transmission cable. The motor For driving the driving wheel, the driving wheel, the indirect wheel and the tension wheel are in a straight line U' and the indirect wheel is located between the driving wheel and the tension wheel. The driving wheel has at least one interval on the outer circumferential surface. Arranging a first ring groove. The outer circumferential surface of the indirect wheel has a plurality of second ring grooves arranged at intervals. The outer circumferential surface of the tension wheel has a second ring groove. The transmission cable surrounds the at least one first ring groove, The second ring groove and the third ring groove. The portion of the cable is surrounded by a spiral path around the first ring groove and the second ring groove. Thus, the cable can be enclosed around the drive. The outer surface of the wheel, the indirect wheel and the tension wheel, and the parts of the cable can not contact each other, so that the driving wheel can drive the indirect wheel and the tension wheel sequentially. The trolley is set in the indirect l2882〇l Among the wheels - The connecting arm-end is connected to the vehicle and is otherwise connected to the garage door. Therefore, the driving wheel can sequentially drive the indirect wheel, the transmission cable, the trolley and the connecting arm, thereby opening or closing the garage door [Embodiment] The foregoing and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings. Referring to Figures 1, 7, and 8. A preferred embodiment of the electric door opening system of the present invention comprises a casing 1, a transmission device 2 partially disposed in the casing, a trolley (Trolley) 3, a connecting arm 4, and a bracket (Bracket). 81, two suspension elements 82, 83, a track 84, and a motherboard disposed in the casing, a Rotation sensor 6 and a voice unit 7. As shown in Figure 1, the present invention opens the door The second embodiment of the system is such that the two suspension members 82, 83 are mounted under a ceiling 92 and connected to a garage door 91. Another portion of the transmission 2 is disposed on the rail 84. The trolley 3 is fixed. On the transmission 2, thus moving up the obstruction 84 As for the 'the connecting arm 4, one end of the connecting arm 4 is pivoted on the trolley 3, and the other end is dreamed by the selection frame 81 being pivoted to the garage door 91. Thus, the transmission device 2 can drive the trolley 3 and the connection in sequence. The arm 4 can thus open or close the garage door 91. Referring to Figures 1~6, the transmission 2 includes a motor 21, a drive wheel 22, an indirect wheel 23, a force wheel 24 and a drive cable 25. The motor 21 is used to provide the power required for the driving wheel 22 to perform a rotary motion. As shown in FIG. 3, 7 1288201: 'The driving wheel 22, the indirect wheel 23 and the tension wheel 24 are spaced apart in a straight line, and the indirect wheel 23 is located at the driving Between the wheel 22 and the tension wheel 24.
如圖2、4所示，該驅動輪22之外周面22〇上具有至 少一間隔排列之第一環槽221 ;該間接輪23之外周面2扣 上具有複數間隔排列之第二環槽231 ;而該張力輪24之外 周面240上具有一第三環槽241。本發明為了要達成傳動索 25之各部分彼此不互相接觸的目的’便在驅動輪22與張力 輪24之間設置了間接輪23,且利用驅動輪22之外周面 220上的第一環槽221及間接輪23之外周面23〇上的第二 環槽231來分別隔開圍繞於驅動輪22及間接輪23之外周 面230上的每一圈傳動索以。 如圖2所示，在該較佳實施例中，該驅動輪22之外周 面220上的第-環槽221之數目為3，而間接輪23之外周 面230上的第二環槽221之數目比驅動輪22之外周面22〇 上的第:環槽221之數目多！，亦即為4。事實上，本發明 中只要第二環槽231之數目比第一環槽221之數目多！，即 可達成傳動索25之各部分彼此不互相接觸的目的，而不需 如圖2中所示將第一環槽221及第二環槽231之數目分別 限定為3及4。 此卜，由於圍繞於第一環槽221 --- 尔一>衣債及第 環槽241之傳動素25需形成單一封閉迴路⑹峨“， 因此該傳動索25在該驅動輪22與間接輪23間是呈交錯 悲且傳動索25之-部分是以一螺旋路徑環繞於第一環 221及第二環槽231上。圖2所㈣傳動索25上的箭頭 !288201 疋表讀動索25被驅動輪22所驅動時之運動方向。因此 ，错由本發明中此種驅動輪22、間接輪231、張 傳動索25四者間之特殊配置，便可避免若傳動索&之各 部分彼此互相接觸時所造成的快速磨損。 如圖3所示’該傳動索25在該間接輪23及張力輪μ 之間是呈兩段平行傳動索25之態樣。該台車3則是固設於 該間接輪23及張力輪24間之其中一段傳動索25上。於是 ，當驅動輪22、間接輪23及張力輪24三者之旋轉運動轉 換成間接輪23及張力輪24間部分傳動索25之直線運動後 ，接著便可使台車3產生如方向χ所示之直線運動，然後 再依序帶動連接臂4以及車庫門91(圖1)，因而可開啟或關 閉該車庫門91。 參閱圖3〜8，該主板5包括一主處理器5丨、一雙驅動 力控制系統（Double Force Control System，DFCS)電路單元 52及一控制匯流排53(圖8)。藉由該DFCS電路單元52， 可獲知台車3之正確位置。如圖7所示，該轉速計6裝設 至该間接輪23上。轉速計6所獲得的資訊可用於DFCS中 。由於在該較佳實施例中，該馬達21為一直流馬達，因此 轉速正比於馬達21之負載。該DFCS電路單元52使用兩種 不同來源之資訊來計算電流驅動力··一為直流電流，另一 則為轉速。藉由該DFCS電路單元52，本發明能夠對各種 不同的情況做精確回應。由於直流馬達電流量測的速度本 質上是相當緩慢的，因此很難對驅動力的動態及快速改變 做出正確回應。運用該DFCS電路單元52來量測馬達電流 9 1288201 記台車3之位置資訊。該DFcs電路單元52可個別 ^A門開啟與關閉之特性與馬達電流之關係。藉此， 2;二車二之負载及位置，該DFCS電路單元52可對馬達 開門系、缔而的馬力。該DFCSt路單元52可使本發明電動 之操作更為安全。即使其中一種驅動力之量測方 度^性仍舊可利用另—種方法來維持本發明運作時之高 路二圖—7::二範電路單元52包括-仙 一 、、、達電机里測電路522、一 DFCS安全電路525 馬達控制電路526。該轉速量測電路521用以接收轉逹 計6所傳來的訊號，並將其轉換成該間接輪23之轉速轉; «電流量測電路522用以量測馬達21之電流。該df= =L525接收轉速量測料521以及馬達電流量測電 ，以執行DFCK全程序，使得本發明中即使 ，、種驅動力之量測方法失效，仍可利 方 明運作時之高度安全性。然後，該馬達J 之輸^⑽安全電路525所傳來的資訊來控制該馬達 /如圖8所示，該主處理器51用以根據本發明電動開門 系統之特定功能，產线應辨識碼。亦即，根據需從揚聲 為75所輸出之特定功能所對應之語句聲音，該主處理器η 可產生對應之辨識碼’然後再將該辨識竭經由該控制匯流 排53傳送至語音單元7。 該語音單元7用以接收該主處理器5ι傳來的辨識碼， 10 1288201 並根據該辨識碼，產生一與該辨識碼對應之放大語句聲音 訊號輸出至該揚聲器75。在該較佳實施例中，立 7可以-外接介面卡之形式插設在該主板5之其； 上，亦即該控制®流排53所對應之連接琿上。於是，㈣ 不同語言及不同市場之需求，使用者可購買其所需之特定 語言語音單元7介面卡來安裝在主板5之連接埠上。 該語音單元7包括一記憶體模組71、—語音處理器72 、一脈衝寬度調變（Pulse Width M〇dule，pWM)模組乃、一 放大器74及揚聲n 75。該記憶體模組71用以健存複數字 詞之語音樣本。該語音處理器72用以接收該主處理器Η 傳來的語句之辨識碼，並根據該辨識碼，自該記憶體模組 71取用所需的語音樣本，以組合成與該辨識碼對應之語句 化號。该PWM模組73用以根據該語句信號之脈衝寬度來 調變該語句信號之振幅。該放大器74用以放大該pwM模 組73所傳來之經調變後之語句信號之振幅。然後，該放大 器74再將已放大之語句聲音透過該揚聲器輸出，以達 本發明藉由聲音將系統特定功能告知使用者之目的。 歸納上述，本發明電動開門系統之主要目的在於，藉 由驅動輪22、間接輪23、張力輪24及傳動索25四者間之 特殊配置，可避免習知以鏈條或帶齒皮帶做為傳動裝置時 具有製造過程複雜、造價昂貴及組裝步驟繁多等缺點。 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 11 1288201 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 較佳 圖1是-立體圖，說明本發明電動開 實施例裝設於一車庫門9 ; '、、、、 圖2疋一立體圖，說明該較佳實施例中的驅動_ 22 間接輪23以及傳動索25 ,· 勡輪22、 圖3是-仰視圖，說明該較佳實_中的軸 圖4是一側視圖’說明該較佳實施例中的傳動農置2: 圖5是-俯視圖，說明該較佳實施例中的傳動袭置h 圖6是一沿圖4中的線VI—VI 傳動裝.置2; 所取的剖視圖’說明該 .圖7是-功能方塊圖，說明本發明中的dfcs電路μ ，及 圖8是-功能方_，朗本發时的主板5、語音單 元71以及揚聲器72。 曰 12 1288201 【主要元件符號說明】As shown in FIG. 2 and FIG. 4, the outer circumferential surface 22 of the driving wheel 22 has at least one first annular groove 221 arranged at intervals; the outer circumferential surface 2 of the indirect wheel 23 is buckled with a second annular groove 231 arranged at a plurality of intervals. And the outer circumferential surface 240 of the tension wheel 24 has a third annular groove 241. The present invention provides an indirect wheel 23 between the drive wheel 22 and the tension wheel 24 for the purpose of achieving that the portions of the cable 25 are not in contact with each other, and utilizes the first ring groove on the outer circumferential surface 220 of the drive wheel 22. The second ring groove 231 on the outer peripheral surface 23 of the indirect wheel 23 is spaced apart from each of the drive cables around the outer circumferential surface 230 of the drive wheel 22 and the indirect wheel 23, respectively. As shown in FIG. 2, in the preferred embodiment, the number of the first ring grooves 221 on the outer circumferential surface 220 of the driving wheel 22 is three, and the second ring groove 221 on the outer circumferential surface 230 of the indirect wheel 23 is The number is greater than the number of the first ring grooves 221 on the outer peripheral surface 22 of the drive wheel 22! , that is, 4. In fact, in the present invention, as long as the number of the second ring grooves 231 is larger than the number of the first ring grooves 221! That is, the purpose of the portions of the cable 25 not contacting each other can be achieved without limiting the number of the first ring groove 221 and the second ring groove 231 to 3 and 4, respectively, as shown in FIG. Therefore, since the transmission ring 25 surrounding the first ring groove 221 - er 1 and the ring groove 241 needs to form a single closed circuit (6) 峨 ", the cable 25 is in the drive wheel 22 and indirectly The wheel 23 is staggered and the part of the cable 25 is surrounded by a spiral path around the first ring 221 and the second ring groove 231. The arrow on the transmission cable 25 of Fig. 2 (4) 288201 读 reading read cable 25 is the direction of motion when driven by the drive wheel 22. Therefore, the special arrangement between the drive wheel 22, the indirect wheel 231, and the tension cable 25 in the present invention can avoid the parts of the transmission cable & The rapid wear caused by mutual contact with each other. As shown in Fig. 3, the transmission cable 25 is in the form of two parallel transmission cables 25 between the indirect wheel 23 and the tension pulley μ. The trolley 3 is fixed. The driving cable 22, the indirect wheel 23 and the tension wheel 24 are converted into the partial transmission cable between the indirect wheel 23 and the tension wheel 24. After the linear motion of 25, the trolley 3 can then be moved in a linear motion as indicated by the direction χ Then, the connecting arm 4 and the garage door 91 (Fig. 1) are sequentially driven, so that the garage door 91 can be opened or closed. Referring to Figures 3-8, the main board 5 includes a main processor 5丨, a dual driving force control system. (Double Force Control System, DFCS) circuit unit 52 and a control bus bar 53 (Fig. 8). With the DFCS circuit unit 52, the correct position of the trolley 3 can be known. As shown in Fig. 7, the tachometer 6 is installed. Up to the indirect wheel 23. The information obtained by the tachometer 6 can be used in the DFCS. Since in the preferred embodiment the motor 21 is a DC motor, the rotational speed is proportional to the load of the motor 21. The DFCS circuit unit 52 The information from two different sources is used to calculate the current driving force. One is the DC current and the other is the rotational speed. With the DFCS circuit unit 52, the present invention can accurately respond to various situations. Due to the DC motor current measurement The speed is inherently quite slow, so it is difficult to respond correctly to the dynamic and rapid changes in the driving force. The DFCS circuit unit 52 is used to measure the motor current 9 1288201 to record the position information of the trolley 3. The DFcs The circuit unit 52 can individually control the relationship between the opening and closing characteristics of the door and the motor current. Thereby, the load and position of the two vehicles, the DFCS circuit unit 52 can open the door and the horsepower of the motor. The DFCSt The circuit unit 52 can make the electric operation of the invention safer. Even if the measurement degree of one of the driving forces is still available, another method can be used to maintain the high road of the operation of the present invention. The circuit unit 52 includes a singapore, a motor measuring circuit 522, a DFCS safety circuit 525, and a motor control circuit 526. The speed measuring circuit 521 is configured to receive the signal transmitted from the switch 6 and convert it into the speed of the indirect wheel 23; the current measuring circuit 522 is configured to measure the current of the motor 21. The df==L525 receives the rotational speed measuring material 521 and the motor current measuring power to execute the DFCK full program, so that even if the measuring method of the driving force is invalid in the present invention, it can be highly safe in operation. Sex. Then, the motor J (10) safety circuit 525 transmits information to control the motor / as shown in FIG. 8 , the main processor 51 is used for the specific function of the electric door opening system according to the present invention, the production line identification code . That is, the main processor η can generate a corresponding identification code according to the statement sound corresponding to the specific function outputted from the speaker sound 75, and then transmit the identification to the voice unit 7 via the control bus 53. . The voice unit 7 is configured to receive the identification code transmitted by the main processor 5, 10 1288201, and generate an amplified speech sound signal corresponding to the identification code to output to the speaker 75 according to the identification code. In the preferred embodiment, the stand 7 can be inserted into the main board 5 in the form of an external interface card, that is, the connection port corresponding to the control bar 33. Therefore, (4) users of different languages and different markets can purchase the specific language voice unit 7 interface card required for installation on the interface of the motherboard 5. The voice unit 7 includes a memory module 71, a voice processor 72, a Pulse Width Modulation (pWM) module, an amplifier 74, and a speaker n 75. The memory module 71 is configured to store voice samples of complex digital words. The voice processor 72 is configured to receive an identification code of the statement sent by the main processor, and obtain a required voice sample from the memory module 71 according to the identification code to be combined with the identification code. The statement number. The PWM module 73 is configured to modulate the amplitude of the statement signal according to the pulse width of the statement signal. The amplifier 74 is used to amplify the amplitude of the modulated speech signal transmitted by the pwM module 73. Then, the amplifier 74 transmits the amplified statement sound through the speaker to achieve the purpose of the present invention to inform the user of the system specific function by sound. In summary, the main purpose of the electric door opening system of the present invention is to avoid the conventional use of a chain or a toothed belt as a transmission by the special configuration between the driving wheel 22, the indirect wheel 23, the tension wheel 24 and the transmission cable 25. The device has the disadvantages of complicated manufacturing process, high cost, and numerous assembly steps. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All still 11 1288201 is covered by the patent of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the electric opening embodiment of the present invention installed in a garage door 9; FIG. 2 is a perspective view showing the driving in the preferred embodiment. 22 Indirect wheel 23 and transmission cable 25, · 勡 wheel 22, Fig. 3 is a bottom view, showing the axis of the preferred embodiment 4 is a side view 'illustrating the transmission of the preferred embodiment 2: Figure 5 is a plan view showing the transmission attack h in the preferred embodiment. Figure 6 is a line VI-VI drive assembly 2 in Figure 4; the cross-sectional view taken 'illustrated'. Figure 7 is - function The block diagram illustrates the dfcs circuit μ in the present invention, and FIG. 8 is a functional side, a main board 5, a speech unit 71, and a speaker 72 when the Rump is issued.曰 12 1288201 [Main component symbol description]
1 ·… 殼體 522 - 1 傳動裝置 21 · · · 馬達 525 · 22· · · 驅動輪 526 · 220 * * 外周面 53· · 221 · · 第一環槽 6 · · 23· · · 間接輪 7… 230 · * 外周面 71 . · 231 · · 第二環槽 72· ·， 24·… 張力輪 73· ·. 240 * · 外周面 74· ·. 241 · · 第三環槽 75· · · 25· · · 傳動索 81··. 3 ·… 台車 82 · · · * 連接臂 83· . · 5 — * 主板 84· · · 51 · · · 主處理器 91 · · · 52· · · DFCS電路單元 92· · · 521 · · 轉速量測電路 馬達電流量測電 路 DFCS安全電路 馬達控制電路 控制匯流排 轉速計 語音單元 記憶體模組 語音處理器 PWM模組 放大器 揚聲器 撐架 懸掛元件 懸掛元件 軌道 車庫門 天花板 131 ·... Housing 522 - 1 Transmission 21 · · · Motor 525 · 22· · · Drive wheel 526 · 220 * * Outer peripheral surface 53 · · 221 · · First ring groove · · · · · · · · Indirect wheel 7 ... 230 · * Outer surface 71 . · 231 · · Second ring groove 72 · ·, 24·... Tension wheel 73· ·. 240 * · Outer surface 74 · ·. 241 · · Third ring groove 75 · · · 25 · · · Transmission cable 81··. 3 ·... Pallet 82 · · · * Connecting arm 83 · . · 5 — * Main board 84 · · · 51 · · · Main processor 91 · · · 52· · · DFCS circuit unit 92· · · 521 · · Speed measuring circuit motor current measuring circuit DFCS safety circuit motor control circuit control bus bar tachometer voice unit memory module voice processor PWM module amplifier speaker bracket suspension component suspension component track garage door Ceiling 13