1307661 CM0083TW 21027twf.doc/g 九、發明說明： 【發明所屬之技術領域】 本發明是有關於—種齒㈣合定 種可靠度良好的齒輪喃合定位機構W且特別是有 【先前技術】 P表機及W印機的使用普及於 印表機或影印機的進紙 曰心屯此中—般而言， 動滾筒滾動，以夾帶纸^ ’ 1回輪喝合定位機構帶 紙而,人咿、'氏張進入列印區或影印區中。 互組裝%專定位機構多是ιχ兩個傳動模組相 寸公差而益法::二傳動模組之間的定位常常會因為尺 齒輪嚙合定位機構尺寸△差疋造成 細地來說，在机Mf傳輸效率低的主要原因之—。詳 組的組合精，::傳動模组時’須要特別控制兩個傳動模 兩個傳動模:的齒====，確保 合不足的情形。丄个曰u馮叹彳A是而有撞齒或是嚅 計-個馬達^卜’有時還需要在兩個傳動模組中各設 後，公差太f傳達動力，以取代兩個傳動模組在組配之 【發明内容】而使齒輪無法傷合的問題。 位機構。 目的疋提供—種可#度良好的it輪嗜合定 位機:達以是其他目的’本發明提出-種齒輪嚙合定 括一第-傳^裝設在U中。此齒料合定位機構包 動楱組以及一第二傳動模組。第一傳動模組配 設於裝置之一平台</ RTI> < Desc/Clms Page number1 The use of the watch machine and the W-printer is popular in the printing machine or the photocopying machine. In general, the moving roller rolls to entrain the paper ^ '1 return wheel to drink the positioning mechanism with paper,咿, '氏张 entered the printing area or photocopying area. The mutual assembly % special positioning mechanism is mostly ιχ two transmission modules with different tolerances. The method of positioning: The positioning between the two transmission modules is often caused by the difference in the size of the ulnar gear meshing positioning mechanism. The main reason for the low efficiency of Mf transmission. The combination of the detailed group:: When the transmission module is used, it is necessary to specially control the two transmission modes. The two transmission modes: the teeth ====, to ensure the situation is insufficient.丄 曰 冯 冯 冯 冯 冯 是 是 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯 冯The group is in the group [invention] and the gear cannot be injured. Position agency. OBJECTIVE: To provide a good-in-one-wheel-adhesive positioning machine: Dae-Yi is another purpose. The present invention proposes that a type of gear meshing includes a first-passing device installed in the U. The tooth material locating mechanism includes a turret group and a second transmission module. The first transmission module is arranged on one platform of the device
1307661 CM0083TW 21027twf.doc/g 丨寸初棵組包括一第一固定座' 第-擺臂以及-第-齒輪組。第一固定座配置於平二 上。第-擺臂藉由-樞桿樞紗第―固定座 組拖設^第-擺臂。第二傳動模組適於組裝至第—傳ζ模 組，此第-傳動模組包括—第二固定、 -第二擺臂以及-彈性件。第弟—齒輪組、 斤丨土 Ί1·弟一齒輪組樞設於第二固定 座’其中第二齒輪組適於與第—齒輪組妙。第二擺臂樞 設於第二蚊座，且第二擺臂具有-樞接端、-凹槽以及 /、^槽位於樞接端與導引端之間。彈性件配 -值動模組，道3丨〇*之一端位於凹槽内。^施力移動第 :擺臂以樞桿為軸第-擺臂，而且，推移第 組組裝至第-傳動模Γ喊位置，以使第二傳動模 在本發明之-實施例中 固定 第-限位結構，位於第 U括一 在本發明之一二，之旋轉路#上。 -固定座-體成^中，·L述之第，限位結構與該第 ΐίΓΓ—實施例中，上述之第〆限位結構為凸塊。 在本电明之一實施例中，上述之第〆擺臂具有—第一 導引面第—接觸面，而第—接觸面鄰接第一導引 面且 弓丨面及第—接觸面適於斑第二擺臂接觸。 在本發=之-實施例中，上述之導弓丨端具有—第 引接觸面’而第二導引面鄰接第二接觸面， 且一面、於接觸第一導引面，第〉接觸面適於接觸 1307661 CM0083TW 21027twf.doc/g 第一接觸面。 在本發明之一實施例中，上述之導引端具有一第二導 引面以及一第二接觸面，而第二導引面鄰接第二接觸面， 且第二導引面及第二接觸面適於接觸第一擺臂。 在本發明之一實施例中，上述之第一齒輪組包括一第 ;齒輪以及一第二齒輪，第一齒輪藉由樞桿樞設於第一擺 煮，而第二齒輪樞設於第一擺臂並鄰近第一齒輪。 ,在本發明之一實施例中，上述之第二固定座更包括— 鄰近第二擺臂之第二限位結構。 在本發明之一實施例中，上述之第二限位結構與第二 固定座一體成型。 在本發明之一實施例中，上述之第二限位結構為凸塊。 斗在本發明之一實施例中，上述之第二齒輪組為一第三 Ξ i且第三齒輪框設於第二固定座’而第三齒輪適於盘 乐一齒輪嚅合。 '、 ^發明之-實施例上述之彈性件包括扭酱。 弭第一ί明之齒輪嚙合定位機構利用第—擺臂及彈性件消 間可以模組與第二傳動模⑽裝時的誤差，使齒輪之 且動力傳二=齒合。因此’齒輪嚙合定位機構的作動平順， 專輪政率優良，品質穩定且可靠度高。 易僅之ΐ述和其他目的、特徵和優點能 如下。 寺牛貫把例，並配合所附圖式，作詳細說明 【貫施方式】 1307661 CM0083TW 21027twf.doc/g 圖l為本發明一種齒輪嚙合定位機構，其第二傳動模 組尚未組裝至第一傳動模組的示意圖。請參考圖1，本發 明之齒輪嚙合定位機構100適於固設於一裝置的一平台 200上。在本實施例中，裝置可以是印表機、影印機或其 他較大型的裝置，而齒輪°齒合定位機構100例如是用以帶 動紙張或其他物品進入裝置中，或是將紙張或其他物品由 裝置中輸出。齒輪嚙合定位機構100包括一第一傳動模組 110以及一第二傳動模組120,其中第二傳動模組120適於 組裝至第一傳動模組110，以達到傳輸動力的需求。 承上述，第一傳動模組110包括一第一固定座112、 一樞桿114、一第一擺臂116以及齒輪組118,其中第一固 定座112固設於平台200。擺臂116藉由樞桿114樞設於 固定座112，因此擺臂116可以以枢桿114為軸心相對第 一固定座112轉動。此外，擺臂116更具有一第一導引面 116a，且第二傳動模組120適於藉由第一導引面116a的導 引，以組裝至第一傳動模組110。 齒輪組118樞設於擺臂116，其中齒輪組118包括一 第一齒輪118a以及一第二齒輪118b，且第一齒輪118a亦 是藉由樞桿114以樞設於擺臂116,而第二齒輪118b樞設 於擺臂116並鄰近第一齒輪118a。 此外，第一固定座112更具有一第一限位結構112a， 且第一限位結構112a為凸出於第一固定座112之表面的凸 塊，並位於擺臂116的轉動路徑上，以限制擺臂116的旋 轉角度及路徑。在本實施例中，第一限位結構112a可以是 1307661 CM0083TW 21027twf.doc/g ’或是另外以黏附、鑲嵌等方 當第二傳動模組120尚未組裝 擺臂116接觸第一限位結構 與第一固定座112 —體成型 式配置於第一固定座112。 至第一傳動模組110時， 112a，並位於一原始位置。 請繼續參考圖卜第二傳動模組12〇適 傳動模組110,其包括一第二固定 —衣王矛1307661 CM0083TW 21027twf.doc/g The 初 initial group includes a first fixed seat 'the first swing arm and the -th gear set. The first mount is disposed on the flat second. The first-swing arm is dragged by the - pivotal armature - the fixed seat group. The second transmission module is adapted to be assembled to the first transmission module, the first transmission module comprising - a second fixed, - a second swing arm and - an elastic member. The first brother-gear group, the 丨 丨 Ί · · · · 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮 齿轮The second swing arm is pivoted to the second mosquito seat, and the second swing arm has a pivotal end, a groove and a slot, and the slot is located between the pivot end and the leading end. The elastic member is equipped with a value-moving module, and one end of the track 3丨〇* is located in the groove. ^Shifting movement: the swing arm is pivoted as the shaft-swing arm, and the shifting assembly is assembled to the first-drive mode squealing position so that the second transmission mold is fixed in the embodiment of the invention - The limit structure is located on the second side of the present invention. - The fixing seat - the body forming ^, the third description of the L, the limiting structure and the first ΓΓ ΓΓ - in the embodiment, the ninth limiting structure is a bump. In an embodiment of the present invention, the first swing arm has a first guide surface first contact surface, and the first contact surface abuts the first guide surface and the bow surface and the first contact surface are adapted to the spot The second swing arm is in contact. In the embodiment of the present invention, the guide bow end has a first contact surface and the second guide surface abuts the second contact surface, and one surface contacts the first guide surface, and the contact surface Suitable for contact with 1307661 CM0083TW 21027twf.doc/g first contact surface. In an embodiment of the invention, the guiding end has a second guiding surface and a second contact surface, and the second guiding surface is adjacent to the second contact surface, and the second guiding surface and the second contact The face is adapted to contact the first swing arm. In an embodiment of the present invention, the first gear set includes a first gear, a second gear, and the first gear is pivoted to the first swing by the pivot, and the second gear is pivoted to the first The arm is placed adjacent to the first gear. In an embodiment of the invention, the second fixing base further includes a second limiting structure adjacent to the second swing arm. In an embodiment of the invention, the second limiting structure is integrally formed with the second fixing base. In an embodiment of the invention, the second limiting structure is a bump. In one embodiment of the invention, the second gear set is a third Ξ i and the third gear frame is disposed on the second fixed seat ′ and the third gear is adapted to be engaged by the gear. ', ^Invention - Embodiment The elastic member described above includes a twisted sauce.弭 The first gear engagement positioning mechanism utilizes the first-swing arm and the elastic member to eliminate the error between the module and the second transmission mold (10), so that the gear and the power transmission are two = toothed. Therefore, the gear meshing and positioning mechanism is smooth in operation, the special wheel rate is excellent, the quality is stable, and the reliability is high. The mere descriptions and other purposes, features and advantages can be as follows. The example of the temple is described in detail with reference to the drawings. [0007] CM0083TW 21027twf.doc/g Figure 1 is a gear meshing positioning mechanism of the present invention, the second transmission module has not been assembled to the first Schematic diagram of the drive module. Referring to Figure 1, the gear meshing positioning mechanism 100 of the present invention is adapted to be secured to a platform 200 of a device. In this embodiment, the device may be a printer, a photocopier or other larger device, and the gear tooth positioning mechanism 100 is used, for example, to drive paper or other articles into the device, or to paper or other articles. Output from the device. The gear meshing positioning mechanism 100 includes a first transmission module 110 and a second transmission module 120. The second transmission module 120 is adapted to be assembled to the first transmission module 110 to meet the power transmission requirement. In the above, the first transmission module 110 includes a first fixing base 112, a pivot rod 114, a first swing arm 116 and a gear set 118, wherein the first fixing base 112 is fixed to the platform 200. The swing arm 116 is pivotally mounted to the fixed seat 112 by the pivot rod 114, so that the swing arm 116 can be pivoted relative to the first fixed seat 112 with the pivot rod 114 as an axis. In addition, the swing arm 116 further has a first guiding surface 116a, and the second transmission module 120 is adapted to be assembled to the first transmission module 110 by the guiding of the first guiding surface 116a. The gear set 118 is pivotally disposed on the swing arm 116, wherein the gear set 118 includes a first gear 118a and a second gear 118b, and the first gear 118a is also pivoted to the swing arm 116 by the pivot 114, and the second The gear 118b is pivoted to the swing arm 116 and adjacent to the first gear 118a. In addition, the first fixing base 112 further has a first limiting structure 112a, and the first limiting structure 112a is a protrusion protruding from the surface of the first fixing seat 112, and is located on the rotating path of the swing arm 116, The angle of rotation and path of the swing arm 116 are limited. In this embodiment, the first limiting structure 112a may be 1307661 CM0083TW 21027twf.doc/g ' or additionally adhered, inlaid, etc. when the second transmission module 120 has not assembled the swing arm 116 to contact the first limiting structure and The first fixing base 112 is configured in a body shape on the first fixing base 112 . When it is to the first transmission module 110, 112a is located at an original position. Please continue to refer to the second transmission module 12, the transmission module 110, which includes a second fixed-coating spear
、ϋ # 126以及-彈性件128。第二齒輪组⑶ 樞設於底座122，而本實施例之第二齒輪組124為 齒輪。當然:’在其他實施例中，第二齒輪組124可： 多個齒輪組合而成。 」乂疋田 此外，第二擺臂126框設於第二固定座122，其 一樞接端126a、一凹槽126b以及—導引端n，^中 接端論穿設第二固定座122，因此第二擺臂126 ^以立 樞接端m為軸心相對第二固定座122旋轉。凹槽⑽ 位於樞接端126a與導引端126c之間。導引端126。曰且有一 第二導引面126c，以及-第二接觸面126c，，，其中第2 面126c，適於接觸並推移第一導弓^ _，使第—擺臂⑽ 旋轉至一組裝位置，然後第二接觸面126c，，會接觸第一擺 臂116的-第-接觸面u6b，以使第二傳動模组12〇組^ 至第一傳動模組110。 另外，彈性件128配設於樞接端126a，且彈性件128 的一端128a位於凹槽126b中。本實施例之彈性件128為 一扭簧。為了限制第二擺臂120的旋轉角度，因此第二固 定座122更具有一第二限位結構122a ,且在第二擺臂126 1307661 CM0083TW 21027twf.doc/g, ϋ # 126 and - elastic member 128. The second gear set (3) is pivotally mounted to the base 122, and the second gear set 124 of the present embodiment is a gear. Of course: In other embodiments, the second gear set 124 can be: a plurality of gears combined. In addition, the second swinging arm 126 is disposed on the second fixing base 122, and a pivoting end 126a, a recess 126b, and a guiding end n, ^ are connected to the second fixing seat 122. Therefore, the second swing arm 126 rotates relative to the second mount 122 with the pivotal end m as an axis. The groove (10) is located between the pivot end 126a and the leading end 126c. Leading end 126. And having a second guiding surface 126c, and a second contact surface 126c, wherein the second surface 126c is adapted to contact and move the first guiding arch to rotate the first swing arm (10) to an assembled position, Then, the second contact surface 126c contacts the first contact surface u6b of the first swing arm 116 to group the second transmission module 12 to the first transmission module 110. In addition, the elastic member 128 is disposed at the pivot end 126a, and one end 128a of the elastic member 128 is located in the recess 126b. The elastic member 128 of this embodiment is a torsion spring. In order to limit the rotation angle of the second swing arm 120, the second fixing seat 122 further has a second limiting structure 122a, and in the second swing arm 126 1307661 CM0083TW 21027twf.doc/g
文力旋轉後’彈性件128的一端128b會接 ，並提供—扭力限二擺们26繼續^限位結構 圖2為圖1之第二傳動模組喊至第 意圖。請同時參考圖1及圖2，當使用者將：動=的示 no組裝…傳動模組110時，使用者使::=模: 動模組m :使第二傳動模組12〇於乂方向持傳 當第一導引面126c，接觸第一導引面116&時 動模組J的持續移動使第二導弓丨面咖，擠 j 面116a’此a寺彈性件128使第二擺臂126 = 在Y方向施-壓力’並藉由第二導引面咖，以：第= Z1二相第一擺臂116以拖桿114為軸心旋 轉至組裝位置，而弟二擺臂126以其_端咖為轴^ 轉。此時，藉由彈性件128,第二擺臂126與限位 疋 之間的角度變小’例如由43度變為36度，以限;J : 臂126的轉動。 彳乐一擺After the wenli rotation, the one end 128b of the elastic member 128 is connected, and the torque is limited. The two traverses are continued. The limit structure is shown in Fig. 2. The second transmission module of Fig. 1 is called to the first intention. Referring to FIG. 1 and FIG. 2 at the same time, when the user assembles the transmission module 110 by the action no., the user makes::=module: the movable module m: causes the second transmission module 12 to smash The direction is transmitted as the first guiding surface 126c, contacting the first guiding surface 116& the continuous movement of the moving module J causes the second guiding bow to face the coffee, and the j-face 116a' Swing arm 126 = Applying pressure in the Y direction and using the second guiding surface to: the =Z1 two-phase first swing arm 116 is rotated to the assembly position with the tow bar 114 as the axis, and the second arm swing arm 126 rotates with its _ end coffee as the axis. At this time, by the elastic member 128, the angle between the second swing arm 126 and the limit 变 becomes smaller, for example, from 43 degrees to 36 degrees, to limit; J: the rotation of the arm 126.彳乐一摆
然後，第一齒輪118b與第二齒輪組124嚙合，且 接觸面126c”接觸第一接觸面116b，第二傳動^且⑽: 裝至第一傳動模組110。 值得注意的是，當第二傳動模組120組裝至第一傳動 模組110時，本發明之齒輪嚙合定位機構1〇〇是藉由可以 轉動的第一擺臂116以及彈性件128造成的彈力^控制第 一接觸面116b與第二接觸面126c”的接觸位置，進而消弭 第一傳動模組110與第二傳動模組120組裝時γ方向的誤 差。因此，在第二傳動模組120組裝至第一傳動模組 11 1307661 CM0083TW 21027twf.doc/g 一茵輸組124 ΑΑ _ 的苐二齒輪可以確切 後，第二齒輪118與第 的B齒合。 此外，為了要確舰定位第二#輪嶋 m之第三齒輪的相對位置，我們更可以 臂116的頂面⑽與第二固定座122的 == 公差’以確保第二齒讀與第二齒輪 = 的嚙合位置，如圖3示。與習知相軔 $ — 祝 定位機構100雜裝容許公差較大，：日:之齒輪嚙合 影響第一動模組U。與第二傳動模二 =誤差不會 另外，當使用者將第二傳動模級120從 110拆卸下來時，第二齒輪·與第二齒輪組124=三 ^可以平順地分離。此時H臂116會因為重灿 性㈣的彈力而恢復至^位擺臂126則是因為彈 第-擺臂m恢復至原始位置後’當我們再次將第二 傳動模組120組裝至第—傳動模組11G時，便可以避免第 一擺臂116位於組裝位置而使第二齒輪組124之第三齒輪 ，第二齒輪118b發生干涉碰撞，因此可以避免第一傳動模 I1!!或第二傳動模組12G損壞，延長齒輪喃妓位機構 i〇〇的使用壽命。 特別的是’因為第二齒輪腿與第二齒輪組124之第 =輪可以確切地嗜合，因此齒輪σ齒合定位機構的作 t平順，且動力傳輸效率較習知佳。因此，本發明之齒 輪嚙合定位機構100的品質穩定，且可靠产高。 12 1307661 CM0083TW 21027twf.doc/g 綜上所述，本發明之齒輪嚙合定位機構至少具有下列 之優點： 一、 利用可旋轉的第一擺臂及彈性件的彈力消弭第一傳 動模組與第二傳動模組組裝時Y方向的誤差，使齒輪之間 可以確切的°齒合。 二、 利用第一擺臂之頂面與第二固定座之底面的形狀公 差，來確保齒輪之間的嚙合位置，因此組裝容許公差較大， 元件的誤差不易影響第一傳動模組與第二傳動模組的組裝 與動力傳輸。 三、 第一傳動模組與第二傳動模組的組裝不會發生干涉 碰撞而損壞，因此齒輪°齒合定位機構的使用壽命長。 四、 齒輪D齒合定位機構的作動平順，且動力傳輸效率優 良，品質穩定且可靠度高。 雖然本發明已以一實施例揭露如上，然其並非用以限 定本發明，任何所屬技術領域中具有通常知識者，在不脫 離本發明之精神和範圍内，當可作些許之更動與潤飾，因 此本發明之保護範圍當視後附之申請專利範圍所界定者為 準。 【圖式簡單說明】 圖1為本發明一種齒輪嚙合定位機構，其第二傳動模 組尚未組裝至第一傳動模組的示意圖。 圖2為圖1之第二傳動模組組裝至第一傳動模組的示 意圖。 圖3是圖2之第一擺臂與第二固定座接觸的示意圖。 13 1307661 CM0083TW 21027twf.doc/g 【主要元件符號說明】 100 :齒輪嚙合定位機構 110 :第一傳動模組 112 :第一固定座 112a :第一限位機構 114 :樞桿 116 :第一擺臂 116a :第一導引面 116b :第一接觸面 116c :頂面 118 :第一齒輪組 118a :第一齒輪 118b :第二齒輪 120 :第二傳動模組 122 :第二固定座 122a :第二限位結構 122b :底面 124 :第二齒輪組 126 :第二擺臂 126a :柩接端 126b :凹槽 126c :導引端 126c’ ：第二導引面 126c” ：第二接觸面 14 1307661 CM0083TW 21027twf.doc/g 128 :彈性件 128a、128b : —端 200 :平台Then, the first gear 118b is engaged with the second gear set 124, and the contact surface 126c" contacts the first contact surface 116b, and the second transmission (10): is mounted to the first transmission module 110. It is noted that when the second When the transmission module 120 is assembled to the first transmission module 110, the gear meshing and positioning mechanism 1 of the present invention controls the first contact surface 116b by the elastic force caused by the first swing arm 116 and the elastic member 128 that can be rotated. The contact position of the second contact surface 126c" further eliminates the error in the gamma direction when the first transmission module 110 and the second transmission module 120 are assembled. Therefore, after the second transmission module 120 is assembled to the first transmission module 11 1307661 CM0083TW 21027twf.doc/g, the second gear 118 can be engaged with the second B. In addition, in order to locate the relative position of the third gear of the second #rim 嶋m, we can further ensure the second tooth reading and the second gear by the top surface (10) of the arm 116 and the == tolerance of the second fixing seat 122. The meshing position of = is shown in Figure 3. Contrary to conventional knowledge $ — I wish the positioning mechanism 100 miscellaneous tolerance is large, the day: the gear meshing affects the first moving module U. In contrast to the second transmission mode 2, the error is not. In addition, when the user removes the second transmission mode 120 from 110, the second gear·and the second gear set 124=3 can be smoothly separated. At this time, the H-arm 116 will return to the position swing arm 126 due to the resilience (4) elastic force, because the spring-swing arm m returns to the original position, when we assemble the second transmission module 120 to the first stage again. In the case of the transmission module 11G, the first swing arm 116 can be prevented from being in the assembled position, and the third gear of the second gear set 124 and the second gear 118b can be interfered by each other, so that the first transmission mode I1!! or the second can be avoided. The transmission module 12G is damaged, and the service life of the gear damper mechanism i〇〇 is prolonged. In particular, because the second gear leg and the second wheel of the second gear set 124 can be exactly associative, the gear σ tooth positioning mechanism is smooth and the power transmission efficiency is better. Therefore, the quality of the gear meshing and positioning mechanism 100 of the present invention is stable and reliable. 12 1307661 CM0083TW 21027twf.doc/g In summary, the gear meshing positioning mechanism of the present invention has at least the following advantages: 1. Eliminating the first transmission module and the second by utilizing the elastic force of the rotatable first swing arm and the elastic member The error in the Y direction when the drive module is assembled allows the gears to be accurately engaged with each other. Second, the shape tolerance of the top surface of the first swing arm and the bottom surface of the second fixed seat is used to ensure the meshing position between the gears, so the assembly tolerance is large, and the error of the component does not easily affect the first transmission module and the second Assembly and power transmission of the drive module. 3. The assembly of the first transmission module and the second transmission module is not damaged by interference and collision, so the service life of the gear tooth positioning mechanism is long. Fourth, the gear D-tooth positioning mechanism has smooth operation, excellent power transmission efficiency, stable quality and high reliability. Although the present invention has been disclosed in an embodiment of the present invention, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a gear meshing positioning mechanism of the present invention in which a second transmission module has not been assembled to a first transmission module. 2 is a schematic view of the second transmission module of FIG. 1 assembled to the first transmission module. 3 is a schematic view of the first swing arm of FIG. 2 in contact with the second mount. 13 1307661 CM0083TW 21027twf.doc/g [Main component symbol description] 100: Gear meshing positioning mechanism 110: First transmission module 112: First fixing seat 112a: First limiting mechanism 114: Pivot 116: First swing arm 116a: first guiding surface 116b: first contact surface 116c: top surface 118: first gear set 118a: first gear 118b: second gear 120: second transmission module 122: second fixing seat 122a: second The limiting structure 122b: the bottom surface 124: the second gear set 126: the second swing arm 126a: the connecting end 126b: the groove 126c: the guiding end 126c': the second guiding surface 126c": the second contact surface 14 1307661 CM0083TW 21027twf.doc/g 128: elastic members 128a, 128b: - end 200: platform
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