201031842 六、發明說明： ， 【發明所屬之技術領域】 本發明涉及一種傳動裝置。 【先前技術】 目前，玩具中内置的馬達裝置分別連接著各種各樣的 傳動機構。傳動機構通常包括主動部分和可在主動部分轉 動時隨著主動部分轉動的從動部分。然而，當主動部分的 轉速過大時，會帶動從動部分的轉速增大，從而會擾亂機 ® 器等電子設備的正常運轉，甚至會造成電子設備的損壞。 【發明内容】 鑒於此，有必要提供一種可實現超載保護的傳動裝 置。 一種傳動裝置，包括第一傳動元件和第二傳動元件， 所述的第一傳動元件套設於所述第二傳動元件之上，所述 第一傳動元件與第二傳動元件相對的表面上設置有第一 Φ 磁性體，所述的第二傳動元件上設置有與第一磁性體相互 作用的第二磁性體，藉由第一磁性體和第二磁性體之間的 磁力以使得第一傳動元件隨著第二傳動元件轉動。 相對現有的超載保護結構，第一傳動元件藉由磁力傳 遞轉矩帶動第二傳動元件一起旋轉；當傳動裝置超載時， 即第二傳動元件受到的阻力大於傳遞轉矩的扭磁力，使第 一傳動元件呈一空轉狀態，以有效保護齒輪或馬達，從而 延長齒輪或馬達壽命。 【實施方式】 4 201031842 _ 如圖1所示，為—較佳實施方式傳動裝置ι〇的立體 圖。傳動裝置10包括第一傳動元件101和可與第一傳動元 件101同時轉動的第一傳動元件107。第一傳動元件套 設於所述第二傳動元件107之上。在本實施方式中，第— 傳動元件101為主動元件’第二傳動元件107為從動元件。 在其他實施方式中’第一傳動元件101可為從動元件，第 二傳動元件107為主動元件。 請同時參閱圖2和圖3，為圖1中傳動裝置10的兩個視 ® 角的分解圖。第一傳動元件101包括套筒狀的第一傳動件 1011和設置在第一傳動件1011内表面上的第一磁性體 1041。第一傳動件iOll内表面上間隔凸設有四條凸肋 1012。第一磁性體W41包括四個永磁鐵1042。四個永磁鐵 1042分別固定於兩兩凸肋1012之間。 第二傳動元件107包括第二傳動件1071、第二磁性體 1043和用於將第二磁性體1043固定於第二傳動件1071上 φ 的固定件1075。第二傳動件1〇71上凸設有一傳動部1073。 傳動部1073上開設有一多邊形的固定孔1074。固定件1〇75 大致為圓柱體狀’其一端凸設有裝配於固定孔1074内的多 邊形的固定柱1076，以使固定件1075固定於第二傳動件 1071上。第二磁性體1043可與第一磁性體1041之間產生相 互作用力，該相互作用力是吸引力或排斥力’其亦包括四 個永磁鐵1044。四個永磁鐵1044間隔地藉由焊接、粘結等 方式固定於固定件1075的外表面上，益分別與第一磁性體 1043的四個永磁鐵1044相接觸，而對應的兩個永磁鐵極性 5 201031842 相反或相同。 . 請同時參閱圖4，當上述傳動裝置10未出現超载時， 第一傳動組101藉由第一磁性體1041和第二磁性體1043之 間的吸引力將轉矩傳遞給所述第二傳動組107，以帶動第 二傳動組107轉動。當傳動裝置10出現超載時，即第一傳 動組101的轉速變大，第一傳動元件101傳遞給第二傳動元 . 件1〇7轉矩的扭力克服第一磁性體1041和第二磁性體1〇43 之間的吸引力和摩擦力，第一磁性體1041和第二磁性體 1043之間發生相對滑動，使第一傳動元件ιοί呈空轉狀 態，以避免擾亂機器等電子設備的正常運轉，有效地保護 電子設備。 如圖5所示’為另一較佳實施方式傳動裝置2〇的立體 圖。傳動裝置20包括第一傳動元件21和可與第一傳動元件 21同時轉動的第二傳動元件22。 請同時參閱圖6，第一傳動元件21包括第一傳動件 響 211、第一磁性體212和阻擋件213。第一傳動件211上開設 用於容置第二傳動元件22的轴孔214。第一傳動件211的内 表面上均勻間隔開設有三個固定槽215和一環狀的卡槽 216。第一磁性體212包括三個永磁體，其分別固定於三個 固定槽215内。阻擋件213大致為圓弧條狀，其卡設於卡槽 216内，用以阻擋第二傳動元件22從軸孔214内滑出。在本 實施方式中，阻擋件213為一卡簧。 第二傳動元件22包括第二傳動件221和固定於第二傳 動件221上的第二磁性體225。第二傳動件221為多邊性的 6 201031842 ，柱狀，其外表面上凸設有與固定槽215對應的三個固定部 • 222。該三個固定部222上均開設有三個與固定槽215對應 的收容槽223。第二磁性體225包括三個永磁體，其分別固 定於收容槽223内，且該第二磁性體225的尺寸大於第一磁 性體212的尺寸，以使得第二傳動元件22裝配於第一傳動 元件21内時，第一磁性體212與第二磁性體225呈非接觸 •式。 β 在其他實施方式中，固定槽215和收容槽223的數目可 ❹ 為兩個、四個或四個以上，且均勻的分佈於第一傳動件211 和第二傳動件221相對應的表面上。 請同時參閱圖7，上述傳動裝置20的負載未出現超載 時’第一傳動元件21藉由磁力傳遞轉矩帶動第二傳動元件 22—起旋轉；當負載出現超載時，即第二傳動元件22受到 的阻力大於傳遞轉矩的扭磁力，使第一傳動元件21呈一空 轉狀態’以有效保護齒輪或馬達，從而延長齒輪或馬達壽 ❹命。 本技術領域的普通技術人員應當認識到，以上的實施 方式僅是用來說明本發明，而並非用作為對本發明的限 定，只要在本發明的實質精神範圍之内，對以上實施例所 作的適當改變和變化都落在本發明要求保護的範圍之内。 【圖式簡單說明】 圖1為一較佳實施方式傳動裝置的立體圖。 圖2為圖1中傳動裝置的分解圖。 圖3為圖1中傳動裝置的另一視角的分解圖。 7 201031842 圖4為圖1中傳動裝置的IV-IV向剖面圖。 圖5為另一較佳實施方式傳動裝置的立體圖。 圖6為圖5中傳動裝置的分解圖。 圖7為圖5中傳動裝置的VII-VII向剖面圖。201031842 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a transmission device. [Prior Art] At present, the motor devices built into the toy are connected to various transmission mechanisms. The transmission mechanism typically includes an active portion and a driven portion that is rotatable with the active portion as the active portion rotates. However, when the rotational speed of the active part is too large, the rotational speed of the driven part is increased, which may disturb the normal operation of electronic devices such as the machine and even cause damage to the electronic device. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a transmission device that can achieve overload protection. A transmission device includes a first transmission element and a second transmission element, wherein the first transmission element is sleeved on the second transmission element, and the first transmission element is disposed on a surface opposite to the second transmission element a first Φ magnetic body, wherein the second transmission element is provided with a second magnetic body that interacts with the first magnetic body, and the first transmission is caused by a magnetic force between the first magnetic body and the second magnetic body The component rotates with the second transmission element. Compared with the existing overload protection structure, the first transmission element drives the second transmission element to rotate together by the magnetic force transmission torque; when the transmission device is overloaded, that is, the resistance of the second transmission element is greater than the torsional magnetic force of the transmission torque, so that the first transmission element The transmission element is in an idling state to effectively protect the gear or motor, thereby extending the life of the gear or motor. [Embodiment] 4 201031842 _ As shown in Fig. 1, is a perspective view of a preferred embodiment of the transmission device. The transmission 10 includes a first transmission element 101 and a first transmission element 107 that is rotatable simultaneously with the first transmission element 101. A first transmission element is disposed over the second transmission element 107. In the present embodiment, the first transmission element 101 is an active element. The second transmission element 107 is a driven element. In other embodiments the 'first transmission element 101 can be a driven element and the second transmission element 107 is an active element. Please refer to FIG. 2 and FIG. 3 at the same time as an exploded view of the two viewing angles of the transmission 10 of FIG. The first transmission member 101 includes a sleeve-shaped first transmission member 1011 and a first magnetic body 1041 disposed on an inner surface of the first transmission member 1011. Four ribs 1012 are convexly formed on the inner surface of the first transmission member iO11. The first magnetic body W41 includes four permanent magnets 1042. Four permanent magnets 1042 are respectively fixed between the two ribs 1012. The second transmission member 107 includes a second transmission member 1071, a second magnetic body 1043, and a fixing member 1075 for fixing the second magnetic body 1043 to the second transmission member 1071. A transmission portion 1073 is convexly disposed on the second transmission member 1〇71. A polygonal fixing hole 1074 is defined in the transmission portion 1073. The fixing member 1 〇 75 is substantially cylindrical and has a polygonal fixing post 1076 fitted to the fixing hole 1074 at one end thereof to fix the fixing member 1075 to the second transmission member 1071. The second magnetic body 1043 can generate an interaction force with the first magnetic body 1041, which is an attractive force or a repulsive force, which also includes four permanent magnets 1044. The four permanent magnets 1044 are fixed to the outer surface of the fixing member 1075 by welding, bonding, etc., and are respectively in contact with the four permanent magnets 1044 of the first magnetic body 1043, and the corresponding two permanent magnet polarities are respectively 5 201031842 The opposite or the same. Referring to FIG. 4 at the same time, when the transmission device 10 is not overloaded, the first transmission group 101 transmits torque to the second transmission by the attraction between the first magnetic body 1041 and the second magnetic body 1043. Group 107 is configured to drive the second transmission set 107 to rotate. When the transmission 10 is overloaded, that is, the rotational speed of the first transmission group 101 becomes larger, the first transmission element 101 is transmitted to the second transmission element. The torque of the torque of the workpiece 1〇7 overcomes the first magnetic body 1041 and the second magnetic body. The attraction and friction between 1〇43, the relative sliding between the first magnetic body 1041 and the second magnetic body 1043 causes the first transmission element to be idling to avoid disturbing the normal operation of the electronic equipment such as the machine. Effectively protect electronic devices. Figure 5 is a perspective view of another preferred embodiment of the transmission 2'. The transmission 20 includes a first transmission element 21 and a second transmission element 22 that is rotatable simultaneously with the first transmission element 21. Referring to Fig. 6, the first transmission member 21 includes a first transmission member 211, a first magnetic body 212, and a blocking member 213. A shaft hole 214 for accommodating the second transmission member 22 is defined in the first transmission member 211. The inner surface of the first transmission member 211 is evenly spaced apart from three fixing grooves 215 and an annular card slot 216. The first magnetic body 212 includes three permanent magnets that are respectively fixed in the three fixing grooves 215. The blocking member 213 is substantially in the shape of a circular arc and is inserted into the slot 216 for blocking the second transmission member 22 from sliding out of the shaft hole 214. In the present embodiment, the blocking member 213 is a circlip. The second transmission member 22 includes a second transmission member 221 and a second magnetic body 225 fixed to the second transmission member 221. The second transmission member 221 is a multi-sided 6 201031842, columnar, and has three fixing portions 222 corresponding to the fixing grooves 215 protruding on the outer surface thereof. The three fixing portions 222 are respectively provided with three receiving grooves 223 corresponding to the fixing grooves 215. The second magnetic body 225 includes three permanent magnets respectively fixed in the receiving groove 223, and the second magnetic body 225 has a larger size than the first magnetic body 212, so that the second transmission element 22 is assembled to the first transmission. In the element 21, the first magnetic body 212 and the second magnetic body 225 are in a non-contact type. In other embodiments, the number of the fixing groove 215 and the receiving groove 223 may be two, four or more, and is evenly distributed on the surfaces of the first transmission member 211 and the second transmission member 221. . Referring to FIG. 7 simultaneously, when the load of the transmission device 20 is not overloaded, the first transmission component 21 rotates the second transmission component 22 by the magnetic force transmission torque; when the load is overloaded, that is, the second transmission component 22 The resistance received is greater than the torsional magnetic force of the transmitted torque, so that the first transmission element 21 is in an idling state to effectively protect the gear or the motor, thereby prolonging the gear or motor life. It is to be understood by those skilled in the art that the above embodiments are only intended to illustrate the invention, and are not intended to limit the invention, as long as it is within the spirit of the invention Changes and modifications are intended to fall within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a transmission of a preferred embodiment. Figure 2 is an exploded view of the transmission of Figure 1. 3 is an exploded view of another perspective of the transmission of FIG. 1. 7 201031842 Figure 4 is a cross-sectional view taken along line IV-IV of the transmission of Figure 1. Figure 5 is a perspective view of another preferred embodiment of the transmission. Figure 6 is an exploded view of the transmission of Figure 5. Figure 7 is a cross-sectional view taken along the line VII-VII of the transmission of Figure 5;
【主要元件符號說明】 傳動裝置 10 傳動裝置 20 第一傳動元件 101 第一傳動元件 21 第二傳動元件 107 第二傳動元件 22 第一傳動件 1011 第一傳動件 211 凸肋 1012 第一磁性體 212 第一磁性體 1041 阻擋件 213 永磁鐵 1042 軸孔 214 第二磁性體 1043 固定槽 215 永磁鐵 1044 卡槽 216 第二傳動件 1071 第二傳動件 221 傳動部 1073 固定部 222 固定孔 1074 收容槽 223 固定件 1075 第二磁性體 225 固定柱 1076 8[Main component symbol description] Transmission device 10 Transmission device 20 First transmission member 101 First transmission member 21 Second transmission member 107 Second transmission member 22 First transmission member 1011 First transmission member 211 Rib 1012 First magnetic body 212 First magnetic body 1041 blocking member 213 permanent magnet 1042 shaft hole 214 second magnetic body 1043 fixing groove 215 permanent magnet 1044 card slot 216 second transmission member 1071 second transmission member 221 transmission portion 1073 fixing portion 222 fixing hole 1074 receiving groove 223 Fixing member 1075 second magnetic body 225 fixing column 1076 8