M378859 五、新型說明： 【新型所屬之技術領域】 _ 本創作關於〆種全地形車二輪、四輪驅動切換及鎖定 機構，主要指一種藉由單一撥又控制二輪、四輪驅動切 換，並可控制車輪打滑時鎖定差速器不動作模式，炎町 具易操作及精確控制功效。 【先前技術】 [0002] 習知全地形車具有二輪、四輪驅動切換設計，益當食M378859 V. New description: [New technical field] _ This is a two-wheel, four-wheel drive switching and locking mechanism for all-terrain vehicles. It mainly refers to a two-wheel and four-wheel drive switch with a single dial and control. Controls the differential mode of the differential when the wheel is slipping. The Yanmachi has easy operation and precise control. [Prior Art] [0002] The conventional all-terrain vehicle has a two-wheel, four-wheel drive switching design, and it is beneficial to eat.
地形車於高低起伏之惡劣地形上行駛時可切換至四輪驅 動模式，又當於平坦地形時可切換至二輪驅動模式以具 省油節能功效。The terrain vehicle can be switched to the four-wheel drive mode when driving on rough terrain with high and low undulations, and can be switched to the two-wheel drive mode when it is flat terrain to save fuel and energy.
然而習知全地形車當藉由二個控制組件分別控制二輸 驅動或四輪驅動模式，具有構件複雜控制不便及不易精 確控制缺失，又習知全地形車雖然具有差速器設計，佴 當車體二個前輪有一輪打滑時因差速器等扭矩作用造成 另一輪失去動力，造成車體不易脫困缺失，然而習知全 地形車一般未具有可舞於控制四輪驅動模式時可於特殊 場合鎖定差速器不動作設計，造成操控不便缺失。 【新型内容】 _ 賴作之目的在提供-種可由單-撥叉控制二輪、四 輪驅動功效，並可四輪驅動模式時鎖定差速器不動作設 計以具較佳操控性功效。 本創作包括-殼座、—人力切換機構…傳動齒輪座 、-差速出力機構、—鎖定機構，纟中人力切換機構具 入力傳動軸、第-轴承、人力傳動齒輪、切換齒輪切 表單編號A0101 第3頁/共21頁 M378859 換撥叉、第一齒輪軸，並該入力傳動軸連設引擎傳輸動 力，又於另一端設置第一齒部；又第一軸承其内環與入 力傳動軸固接，並外環接合入力傳動齒輪；又入力傳動 齒輪内緣與第一軸承外環固接，並具外齒部、内齒部； 又切換齒輪具内齒部、外齒部、環溝，並該内齒部與入 力傳動軸之第一齒部接合，並使切換齒輪與入力傳動軸 連動旋轉，並可對應入力傳動轴之第一齒輪部直向位移 :又外齒部可位移與入力傳動齒輪之内齒部連動嚙合； 又環溝設於切換齒輪外緣，並可與切換撥叉接合；又切 換撥叉接合軸桿設於殼座上，又切換撥叉具穿孔、套合 部、撥動部，並該穿孔穿插軸桿，並使切換撥叉可對應 軸桿軸向位移；又套合部套合切換齒輪之環溝，並撥動 部凸伸於殼座外側，又第一齒輪軸具第一齒輪、第二齒 輪，並該第一齒輪與入力傳動齒輪鳴合，並第二齒輪與 齒輪座連動；藉此令切換撥叉控制2WD模式時令切換齒輪 之外齒部不與入力傳動齒輪之内齒部嚙合連動，使得引 擎輸出動力令入力傳動軸旋轉時雖然帶動切換齒輪旋轉 ，但不帶動入力傳動齒輪、第一齒輪軸、齒輪座旋轉， 並無動力輸出至差速出力機構，而本創作可設於車體前 方，並差速出力機構連接前輪之傳動軸，因而本創作前 述方式車體僅後輪驅動；又令切換撥又控制4WD模式時令 切換齒輪位移，並使其外齒部與入力傳動齒輪之内齒部 嚙合連動，使得引擎輸出動力令入力傳動軸旋轉時可帶 動切換齒輪、入力傳動齒輪、第一齒輪轴、齒輪座、差 速出力機構動作，並使車體前輪具動力；又齒輪座具可 與入力切換機構第一齒輪軸之第二齒輪嚙合連動之外齒 表單編號A0101 第4頁/共21頁 部，並於軸向中央一側設置中空輪軸部，並該輪軸部具 直向外齒部，又於齒輪座另一側設置可供組設差速出力 機構之套接槽，並於套接槽設置接合孔、定位柱；又差 速出力機構具第一輸出軸、接合座、數行星齒輪、第二 輸出軸，並該第一輸出軸為中空體，並一端穿插齒輪座 之輪軸部，並外側具外齒部，並於内側設置可與前輪傳 動軸接合之内齒部，又於另一端接合墊片設於齒輪座之 套接槽内，並設置傳動齒輪；又接合座一側設於齒輪座 之套接槽内，並對應套接槽之接合孔、定位柱位置設置 接合孔'定位孔，並可藉由接合元件固設於齒輪座上並 與齒輪座連動，又於接合座設置透空部，並於透空部侧 方向外擴散設置凹部以容置行星齒輪；又行星齒輪具四 個齒輪設於接合座之凹部位置，並具二上齒輪、二下齒 輪，並該任一組上、下齒輪互為嚙合，並上齒輪與前述 第一輸出軸之傳動齒輪嚙合；又第二輸出軸為中空體， 並設於接合座之透空部位置，且於外側設置可與行星齒 輪之下齒輪嚙合連動之外齒部，又設置内齒部與前輪傳 動軸接合連動，並該行星齒輪使第二輸出軸之旋轉方向 與第一輸出軸方向相反；又鎖定機構具鎖定輪、軸桿、 鎖定撥叉、鎖定環，並該鎖定輪接合軸承樞設於殼座對 應接合第一輸出軸位置，並具對應齒輪座輪軸部外齒部 及軸向位置對應之直向外齒部，並又具可與第一輸出軸 嚙合連動之内齒部，又鎖定撥叉具穿孔、套合部、撥動 部，並該穿孔穿伸軸桿，又套合部可套合鎖定環；又撥 動部可由外界傳動裝置連動控制鎖定撥叉位移；又鎖定 環於外側設置可套設於鎖定撥叉套合部之環槽，並於内 表單編號A0101 第5頁/共21頁 M378859 側設置内齒部，並可控制敎環令内齒部僅與鎖定輪之 外齒部唾合職差速可作以航模式或令鎖定環位移 同時與齒輪座之輪軸部外衛部及鎖定輪之外齒部响合連 動形成差速不可作_定_式；藉此令人力切換機構之 切換撥叉位移至4WD模式並令鎖定機構於不鎖定模式時入 力傳動軸可帶動第一齒輪軸、齒輪座、接合座旋轉，並 由接合座帶動第一、二輪出軸旋轉使車體可四輪驅動行 進，又當前輪轉彎時因前輪二側轉速不同，此時之轉速 差異可由行星齒輪旋轉調節該轉速差異，而本創作因差 速出力機構之行星齒輪、第二輸出軸、第一輸出軸之傳 動齒輪整合於接合座之连空部及凹部位置，可具體積輕 巧及較佳作動穩定性功效，又本創作當車體一侧前輪陷 入坑洞或沙坑空轉時可令鎖定撥叉動作令齒輪座與第一 輸出轴直接連動，並使齒輪座旋轉時同時帶動第一輸出 轴、第二輸出轴同步旋轉，使得車體四輪皆有動力以便 於脫困，並使本創作可適於惡劣地形行駛及易操控使用 模式功效。 /：' 'X. .. 【實施方式】 [0004] 請參閱第—四圖’本創作包括殼座1、一入力切換 機構2、一傳動齒輪座3、一差速出力機構4、一鎖定機構 5，其中入力切換機構2具入力傳動軸21、第一軸承22、 入力傳動齒輪23、切換齒輪24、切換撥叉25、第一齒輪 軸26，並該入力傳動軸21 —端凸出於殼座1，並連設引擎 傳輸動力（圖中未標示），又於另一端設置可與切換齒輪 24連動接合之直向第一齒部211，並端部由軸承212與殼 表單编號A0101 第6頁/共21頁 M3.78859 座1接合；又第一軸承22其内環與入力傳動軸21固接’並 外環接合入力傳動齒輪23 ;又入力傳動齒輪23内緣與第 一轴承22外環固接，並具外齒部231、直向内齒部232 ’ 並内齒部232與入力傳動軸21之第一齒部211具可套接切 換齒輪24間隔a ;又切換齒輪24具内齒部241、外齒部 242 '環溝243，並該内齒部241具直向齒紋’並與入力 傳動轴21之第一齒部211接合，並使切換齒輪24與入力傳 動軸21連動旋轉，並可對應入力傳動軸21之第一齒輪部 211直向位移；又外齒部242具直向齒紋，並可位移與入 力傳動齒輪23之内齒部232連動嚙合；又環溝243設於切 換齒輪24外緣’並可與切換撥叉25接合；又切換撥叉25 接合軸桿251設於殼座1上，並該轴桿251對應入力傳動軸 21平行方向設置，並二端與殼座1接合，又切換撥叉25具 穿孔252、套合部253、撥動部254，並該穿孔252穿插轴 桿251，並使切換撥又25可對應軸桿251轴向位移；又套 合部253套合切換齒輪24之環溝243，並撥動部254凸伸 於殼座1外側，並可藉由控制撥動部254令切換撥叉25帶 動切換齒輪24位移，並控制切換齒輪24之外齒部242與入 力傳動齒輪23之内齒部232嚙合或不嚙合，又第一齒輪轴 26二端接合軸承261、262樞設於殼座1上，並設於對應 入力傳動轴21平行方向，又具第一齒輪263、第二齒輪 264，並該第一齒輪263與入力傳動齒輪23嚙合，並第二 齒輪264為傘齒輪，並與齒輪座3連動；藉此如第三圖所 示，令切換撥又25控制2ffD模式時令切換齒輪24之外齒部 242不與入力傳動齒輪23之内齒部232嚙合連動，使得引 擎輸出動力令入力傳動轴21旋轉時雖然帶動切換齒輪24 表單編號A0101 第7頁/共21頁 旋轉，但藉由第一轴承22形成空轉，並不帶動入力傳動 齒輪23、第一齒輪轴26、齒輪座3旋轉，並無動力輸出至 差速出力機構4，而本創作可設於車體前方，並差速出力 機構4連接二前輪之傳動軸61、62，因而本創作前述2WD 方式之車體僅後輪驅動；又如第五圖所示令切換撥叉25 控制4WD模式時令切換齒輪24位移，並使其外齒部242與 入力傳動齒輪23之内齒部232嚙合連動，使得引擎輸出動 力令入力傳動轴21旋轉時可帶動切換齒輪24、入力傳動 齒輪23、第一齒輪轴26、齒輪座3、差速出力機構4動作 ，並使車體前輪具動力。 傳動齒輪座3具圓形齒盤，並具可與入力切換機構2第 一齒輪軸26之第二齒輪264嚙合連動之斜向外齒部31，並 於軸向中央一側設置中空輪軸部32，並該輪轴部32具直 向外齒部33，又於輪軸部32外側接合軸承34内環，並使 齒輪座3藉由該軸承34外環組設於殼座1上，並可對應殼 座1樞轉，又於齒輪座3另一側設置可供組設差速出力機 構4之套接槽35，並於套接槽35設置接合孔36、定位柱 37 » 差速出力機構4具第一輸出軸41、接合座42、數行星 齒輪43、第二輸出軸44，並該第一輸出軸41為中空體， 並一端穿插齒輪座3之輪軸部32，並外側具直向外齒部 411，並於内側設置可與前輪傳動軸61接合之内齒部412 ，又於另一端接合墊片413設於齒輪座3之套接槽35内， 並設置圓形斜向傳動齒輪414 ;又接合座42—側設於齒輪 座3之套接槽35内，並對應套接槽35之接合孔36、定位柱 37位置設置接合孔421、定位孔422，並可藉由接合元件 表單編號A0101 第8頁/共21頁 固設於齒輪座3上並與齒輪座3連動，又於另一側接合轴 承423與殼座1接合’又於接合座42設置透空部424，並 於透空部424側方向外擴散設置凹部425以容置行齒輪 43 ;又行星齒輪43具四個齒輪設於接合座42之凹部425 位置’並具二上齒輪431、二下齒輪432，並該任一組上 、下齒輪431、432互為嚙合，並上齒輪431與前述第一 輸出軸41之傳動齒輪414嗜合；又第二輸出軸44為中空體 ，並設於接合座42之透空部424位置，且於外側設置可與 行星齒輪4 3之下齒輪4 3 2嗜合連動之外齒部4 41 ’又®又置 内齒部442與前輪傳動軸62接合連動，並該行星齒輪43使 第二輸出轴44之旋轉方向與第一输出軸41方向相反，並 可藉由行星齒輪43調節第一、二輸出轴41、44轉速差異 〇 鎖定機構5具鎖定輪51、軸桿52、鎖定撥叉53、鎖定 環54 ’並該鎖定輪51接合軸承511樞設於殼座1對應接合 第一輸出轴41位置’並具對應齒輪座3輪軸部32外齒部33 及轴向位置對應之直向外齒部512，並又具可與第一輸出 轴414合連動之直向内齒部513，又該轴桿52設於殼座1 對應鎖定輪51、齒輪座3輪軸部32外側平行方向，又鎖定 撥叉53具穿孔531、套合部532、撥動部533，並該穿孔 531穿伸軸桿52 ’又套合部532可套合鎖定環54 ;又撥動 部533可由外界傳動裝置連動控制鎖定撥叉53位移；又鎖 定ί哀54於外側設置可套設於鎖定撥叉53套合部532之環槽 541 ’並於内側設置内齒部542，並可控制鎖定環54令内 齒部542僅與鎖定輪51之外齒部512•喊合形成差速可作動 不鎖定模式或令鎖定環54位移同時與齒輪座3之輪軸部32 第9頁/共21頁 表單編號Α0101 M378859 外齒部33及鎖定輪51之外齒部512嚙合連動形成差速不可 作動鎖定模式。 本創作於平坦路面時可如第三圖所示，令入力切換機 構2之切換撥叉25控制切換齒輪24不帶動入力傳動齒輪23 及第一齒輪轴26動作，並使傳動齒輪座3不動作以具2WD 後輪驅動模式；又當車體於崎嶇不平場所時可如第五圖 所示，令入力切換機構2之切換撥又25位移至4WD模式令 切換齒輪24之外齒部242與入力傳動齒輪23之内齒部232 嚙合連動，並令鎖定機構於不鎖定模式時入力傳動軸21 可帶動第一齒輪轴26、齒輪座3、接合座42旋轉，並由接 合座42帶動第一、二輸出軸41、44旋轉使車體可四輪驅 動行進，又當前輪轉彎時因前輪二側傳動軸61、62轉速 不同，此時轉速差異可由行星齒輪43旋轉調節轉速差異 ，而本創作因差速出力機構4之行星齒輪43、第二輸出軸 44、第一輸出轴41之傳動齒輪414整合於接合座42之透 空部424及凹部425位置，並接合座42又嵌入齒輪座3之 套接槽35穩固組合，可具體積輕巧及較佳作動穩定性功 效0 請參閱第六圖，本創作當車體一側前輪陷入坑洞或沙 坑空轉時可令鎖定撥又53動作令鎖定環54之内齒部542與 齒輪座3之外齒部33及第一輸出轴41之外齒部411嚙合直 接連動，並使齒輪座3旋轉時同時帶動第一輸出軸41、第 二輸出軸44同步旋轉，並使差速不可作動，使得車體四 輪皆有動力，並當一側前輪空轉時另一側前輪仍有動力 以便於脫困。 本創作差速機構亦可為其他設計，不一定須為前述實 表單編號A0101 第10頁/共21頁 [0005] 施例結構，而前述實施例為本創作例示，並非本創作限 制，凡依據本創作精神所為之等效改變亦應屬於本創作 範疇内。 【圖式簡單說明】 第一圖係本創作之分解圖。 第二圖係本創作之組合圖。 第三圖係本創作之組合剖視示意圖，顯示2WD狀態。 第四圖係本創作之差速出力機構上視示意圖（未顯示第一 輸出軸）。 第五圖係本創作控制4WD狀態之未鎖定模式示意圖。 第六圖係本創作控制4WD狀態之鎖定模式示意圖。 【主要元件符號說明】 [0006] 1殼座 2入力切換機構 21入力傳動軸 211第一齒部 212軸承 22第一軸承 23入力傳動齒輪 231外齒部 232内齒部 2 4切換齒輪 241内齒部 242外齒部 243環溝 2 5切換撥叉 251軸桿 252穿孔 253套合部 254撥動部 26第一齒輪軸 261軸承 262軸承 2 6 3第一 #輪 264第二齒輪 3齒輪座 31外齒部 32輪軸部 3 3外齒部 34軸承 35套接槽 3 6接合孔 3 7定位柱 4差速出力機構 41第一輸出軸 411外齒部 412内齒部 413墊片 414傳動齒輪 42接合座 4 21接合孔 表單编號A0101 第11頁/共21頁 M378859 4 2 2定位孔 423軸承 4 2 4透空部 4 2 5凹部 43行星齒輪 431上齒輪 432下齒輪 44第二輸出轴 441外齒部 442内齒部 5鎖定機構 51鎖定輪 511軸承 512外齒部 51 3内齒部 52軸桿 5 3鎖定撥叉 531穿孔 532套合部 • 533撥動部 54鎖定環 541環槽 542内齒部 61傳動軸 6 2傳動轴 表單編號A010.1 第12頁/共21頁However, the conventional all-terrain vehicle controls the two-transmission drive or the four-wheel drive mode by two control components, which has inconvenient structural control and is difficult to accurately control the missing. It is also known that the all-terrain vehicle has a differential design, and the car body has two When there is a round of slip in the front wheel, the other wheel loses power due to the torque action such as the differential, which makes the car body difficult to get out of the trap. However, the conventional all-terrain vehicle generally does not have the ability to play the four-wheel drive mode to lock the differential in special occasions. Action design, resulting in the lack of manipulation. [New Content] _ The purpose of the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The creation includes - shell seat, - manpower switching mechanism... transmission gear seat, - differential output mechanism, - locking mechanism, manpower switching mechanism with input force transmission shaft, first bearing, human transmission gear, switching gear cutting form number A0101 Page 3 of 21 M378859 shift fork, first gear shaft, and the input drive shaft is connected with the engine to transmit power, and the other tooth is provided at the other end; and the first bearing has its inner ring and the input drive shaft Connected, and the outer ring is engaged with the force transmission gear; the inner edge of the input transmission gear is fixed to the outer ring of the first bearing, and has external teeth and internal teeth; and the inner tooth portion, the outer tooth portion and the annular groove of the gear member are switched. The inner tooth portion is engaged with the first tooth portion of the input power transmission shaft, and the switching gear is rotated in conjunction with the input power transmission shaft, and the first gear portion of the input power transmission shaft is directly displaced: the external tooth portion is displaceable and the input force The inner gear of the transmission gear is meshed and engaged; the annular groove is disposed at the outer edge of the switching gear and can be engaged with the switching fork; and the switching fork is coupled to the shaft seat, and the fork is switched, the sleeve portion, Toggle part and The hole is inserted into the shaft, and the switching fork can be corresponding to the axial displacement of the shaft; the sleeve portion is sleeved to match the ring groove of the gear, and the dial portion protrudes outside the shell seat, and the first gear shaft has the first gear a second gear, and the first gear is combined with the input transmission gear, and the second gear is interlocked with the gear carrier; thereby, the switching fork controls the 2WD mode, and the external gear of the switching gear is not matched with the internal gear of the input transmission gear The interlocking of the engine makes the output power of the engine make the switching gear rotate when the input drive shaft rotates, but does not drive the input transmission gear, the first gear shaft and the gear seat to rotate, and there is no power output to the differential output mechanism, and the creation can be It is arranged in front of the vehicle body, and the differential output mechanism is connected to the transmission shaft of the front wheel. Therefore, the vehicle body of the above-mentioned manner is only driven by the rear wheel; and the switching and shifting control of the 4WD mode allows the gear to be displaced and the external tooth portion is The internal gear of the input transmission gear meshes and interlocks, so that the output power of the engine can drive the switching gear, the input transmission gear, the first gear shaft, the gear seat, and the differential speed when the input transmission shaft rotates. The output mechanism acts and the front wheel of the vehicle body is powered; and the gear seat can be meshed with the second gear of the first gear shaft of the input force switching mechanism, the external tooth form number A0101, page 4 / 21 pages, and in the axial direction A hollow wheel shaft portion is disposed on a central side, and the wheel shaft portion has a straight outer tooth portion, and a sleeve groove for setting a differential force output mechanism is disposed on the other side of the gear seat, and an engaging hole is disposed in the socket groove, and the positioning is provided. The differential output mechanism has a first output shaft, a joint seat, a plurality of planetary gears, and a second output shaft, and the first output shaft is a hollow body, and one end is inserted into the axle portion of the gear seat, and the outer portion has external teeth And an inner tooth portion that can be engaged with the front wheel drive shaft is disposed on the inner side, and a joint gasket is disposed in the sleeve groove of the gear seat at the other end, and the transmission gear is disposed; and the sleeve side is disposed on the gear seat In the slot, and corresponding to the engaging hole of the socket, the positioning hole is provided with the positioning hole 'positioning hole, and can be fixed on the gear base by the engaging component and interlocked with the gear seat, and the through hole is disposed at the joint seat, and Diffusion setting in the side of the permeable portion The concave portion is for receiving the planetary gear; the planetary gear has four gears disposed at the concave portion of the joint seat, and has two upper gears and two lower gears, and the upper and lower gears of the pair are meshed with each other, and the upper gear and the foregoing The transmission shaft of the first output shaft is meshed; the second output shaft is a hollow body, and is disposed at the position of the hollow portion of the joint seat, and is disposed on the outer side to be coupled with the gear of the lower gear of the planetary gear, and is disposed inside the tooth portion. The tooth portion is coupled with the front wheel drive shaft, and the planetary gear rotates the second output shaft in a direction opposite to the first output shaft; and the locking mechanism has a locking wheel, a shaft rod, a locking fork, a locking ring, and the locking wheel The joint bearing is pivotally disposed at a position corresponding to the first output shaft of the housing, and has a corresponding outer tooth portion corresponding to the outer tooth portion and the axial position of the shaft portion of the gear seat, and is also engageable with the first output shaft. The tooth portion further locks the fork with a perforation, a fitting portion and a dialing portion, and the perforation penetrates the shaft rod, and the sleeve portion can fit the locking ring; and the dial portion can be interlocked by the external transmission device to control the displacement of the shift fork Locked again The ring is disposed on the outer side of the ring groove of the locking fork sleeve portion, and the inner tooth portion is disposed on the side of the inner form number A0101, page 5 / 21 page M378859, and the inner ring portion can be controlled only to lock the inner tooth portion. The external gear of the wheel can be used as the navigation mode or the displacement of the locking ring can be combined with the outer part of the axle of the gear seat and the external gear of the locking wheel to form a differential. In this way, the switching fork of the switching mechanism is displaced to the 4WD mode and the locking mechanism is in the unlocking mode. The input shaft can drive the first gear shaft, the gear base and the joint to rotate, and the first and second wheels are driven by the joint. The rotation of the shaft allows the vehicle body to travel in four-wheel drive, and the current wheel rotation is different due to the difference in the speed of the two sides of the front wheel. At this time, the difference in the rotation speed can be adjusted by the planetary gear to adjust the difference in the rotation speed, and the planetary gear of the differential output mechanism is The transmission gears of the two output shafts and the first output shaft are integrated in the hollow portion and the concave portion of the joint seat, which can be specifically light and better in functioning stability, and the front wheel of the vehicle body is plunged into a pothole or a bunker. Idle The locking fork can be actuated to directly link the gear base with the first output shaft, and simultaneously rotate the gear seat to simultaneously rotate the first output shaft and the second output shaft, so that the four wheels of the vehicle body are powered to facilitate the escape, and This creation can be adapted to the harsh terrain and easy to control usage mode. /: ' 'X. .. [Embodiment] [0004] Please refer to the fourth figure 'This creation includes the housing 1, an input force switching mechanism 2, a transmission gear base 3, a differential output mechanism 4, a lock The mechanism 5, wherein the input force switching mechanism 2 has an input transmission shaft 21, a first bearing 22, a load transmission gear 23, a switching gear 24, a switching fork 25, a first gear shaft 26, and the end of the input transmission shaft 21 protrudes The housing 1 is connected to the engine to transmit power (not shown), and the other end is provided with a straight first tooth portion 211 that can be engaged with the switching gear 24, and the end portion is bounded by the bearing 212 and the shell form number A0101. Page 6 of 21 M3.78859 Seat 1 joint; the first bearing 22 has its inner ring fixed to the input drive shaft 21 and the outer ring is engaged with the force transmission gear 23; the inner edge of the input transmission gear 23 and the first bearing 22, the outer ring is fixed, and has an outer tooth portion 231, a straight inner tooth portion 232 ′ and the inner tooth portion 232 and the first tooth portion 211 of the input power transmission shaft 21 have a sleeve switch gear 24 interval a; The inner tooth portion 241 and the outer tooth portion 242 'the annular groove 243, and the inner tooth portion 241 has a straight tooth pattern 'and a force transmission shaft The first tooth portion 211 of the 21 is engaged, and the switching gear 24 is rotated in conjunction with the input power transmission shaft 21, and can be directly displaced corresponding to the first gear portion 211 of the input power transmission shaft 21; and the external tooth portion 242 has a straight tooth pattern. The displacement groove 243 is coupled to the inner tooth portion 232 of the input transmission gear 23; the annular groove 243 is disposed at the outer edge of the switching gear 24 and can be engaged with the switching fork 25; and the switching fork 25 is coupled to the shaft 251. 1 , and the shaft 251 is disposed corresponding to the parallel direction of the input force transmission shaft 21, and the two ends are engaged with the housing 1 , and the switching fork 25 has a through hole 252 , a fitting portion 253 , a dialing portion 254 , and the through hole 252 is interspersed The shaft 251 and the switch dial 25 can be axially displaced corresponding to the shaft 251; the sleeve portion 253 fits the ring groove 243 of the switching gear 24, and the dial portion 254 protrudes outside the shell 1 and can be borrowed The switching lever 25 drives the switching fork 25 to drive the switching gear 24 to displace, and controls the external gear portion 242 of the switching gear 24 to mesh with or not mesh with the internal tooth portion 232 of the input transmission gear 23, and the second end of the first gear shaft 26 The joint bearings 261 and 262 are pivotally disposed on the casing 1 and disposed in a parallel direction of the corresponding input transmission shaft 21, a first gear 263 and a second gear 264, and the first gear 263 meshes with the input transmission gear 23, and the second gear 264 is a bevel gear and is interlocked with the gear base 3; thereby, as shown in the third figure, Switching the dial 25 and controlling the 2ffD mode, the external gear portion 242 of the switching gear 24 is not meshed with the internal tooth portion 232 of the input transmission gear 23, so that the engine output power causes the switching gear 24 to rotate when the input shaft 21 is rotated. Form No. A0101 Page 7 of 21 rotation, but the first bearing 22 is idling, and does not drive the input transmission gear 23, the first gear shaft 26, and the gear carrier 3 to rotate, and no power is output to the differential output mechanism 4, and The creation can be arranged in front of the vehicle body, and the differential output mechanism 4 is connected to the transmission shafts 61 and 62 of the two front wheels. Therefore, the body of the aforementioned 2WD mode is only driven by the rear wheel; and the switching fork is arranged as shown in the fifth figure. When the 4WD mode is controlled, the switching gear 24 is displaced, and the external tooth portion 242 is meshed with the internal tooth portion 232 of the input transmission gear 23, so that the engine output power can drive the switching gear 24 and the input force transmission when the input transmission shaft 21 rotates. gear 23. The first gear shaft 26, the gear base 3, and the differential output mechanism 4 operate, and the front wheel of the vehicle body is powered. The transmission gear base 3 has a circular toothed disc and has an oblique outer tooth portion 31 that can be engaged with the second gear 264 of the first gear shaft 26 of the input force switching mechanism 2, and a hollow wheel shaft portion 32 is disposed on the axial center side. And the axle portion 32 has a straight outer tooth portion 33, and the inner ring of the bearing 34 is engaged on the outer side of the axle portion 32, and the gear base 3 is assembled on the housing 1 by the outer ring of the bearing 34, and corresponding The housing 1 pivots, and the sleeve groove 35 for setting the differential output mechanism 4 is disposed on the other side of the gear base 3, and the engaging hole 36 and the positioning post 37 are disposed in the socket groove 35. The differential output mechanism 4 The first output shaft 41, the coupling seat 42, the number of planetary gears 43, and the second output shaft 44, and the first output shaft 41 is a hollow body, and one end is inserted into the axle portion 32 of the gear base 3, and the outer side has a straight outer side. The tooth portion 411 is disposed on the inner side with an inner tooth portion 412 engageable with the front wheel drive shaft 61, and at the other end, the joint pad 413 is disposed in the sleeve groove 35 of the gear base 3, and a circular diagonal transmission gear 414 is disposed. The joint seat 42 is disposed on the side of the sleeve groove 35 of the gear base 3, and is disposed corresponding to the engaging hole 36 of the socket groove 35 and the positioning post 37. The hole 421 and the positioning hole 422 can be fixed on the gear base 3 and interlocked with the gear base 3 by the joint component form number A0101, and the bearing 423 and the housing 1 are joined on the other side. The engaging portion 42 is provided with a hollow portion 424 in the joint seat 42 and a recess portion 425 is disposed outside the hollow portion 424 to accommodate the row gear 43. The planetary gear 43 has four gears disposed at the recess 425 of the joint seat 42. 'With two upper gears 431, two lower gears 432, and any one of the upper and lower gears 431, 432 are engaged with each other, and the upper gear 431 is in harmony with the transmission gear 414 of the first output shaft 41; The output shaft 44 is a hollow body and is disposed at the position of the hollow portion 424 of the joint seat 42 and is disposed on the outer side to be coupled with the gear 4 3 2 below the planetary gear 43. The inner tooth portion 442 is engaged with the front wheel drive shaft 62, and the planetary gear 43 rotates the second output shaft 44 in the opposite direction to the first output shaft 41, and the first and second output shafts 41 can be adjusted by the planetary gear 43. , 44 speed difference 〇 locking mechanism 5 with locking wheel 51, shaft 52, locking fork 53, locking 54' and the locking wheel 51 is coupled to the bearing 511 and is disposed at a position corresponding to the first output shaft 41 of the housing 1 and has an outer tooth portion 33 corresponding to the wheel housing portion 32 of the gear base 3 and a straight outer tooth portion 512 corresponding to the axial position. And a straight inner tooth portion 513 which can be coupled with the first output shaft 414, and the shaft 52 is disposed in the parallel direction of the outer side of the housing portion 1 corresponding to the locking wheel 51 and the gear portion 3 of the gear base 3, and the shifting fork is locked. 53 has a perforation 531, a sleeve portion 532, a toggle portion 533, and the through hole 531 extends through the shaft 52' and the sleeve portion 532 can fit the lock ring 54; and the dial portion 533 can be interlocked and controlled by the external transmission device. The fork 53 is displaced; and the locking groove 54 is disposed on the outer side of the ring groove 541 ′ of the locking fork 53 and the inner tooth portion 542 is disposed on the inner side, and the locking ring 54 is controlled to make the inner tooth portion 542 only The tooth portion 512 is coupled with the outer portion of the locking wheel 51 to form a differential movable disengagement mode or to displace the locking ring 54 while the axle portion 32 of the gear carrier 3 is ninth page/total 21 page form number Α0101 M378859 external tooth portion 33 And the outer teeth 512 of the locking wheel 51 are meshed and interlocked to form a differential inoperable locking mode. When the creation is on a flat road surface, as shown in the third figure, the switching fork 25 of the input force switching mechanism 2 controls the switching gear 24 to move the input power transmission gear 23 and the first gear shaft 26, and the transmission gear base 3 does not operate. In the 2WD rear wheel drive mode; when the car body is in a rough place, as shown in the fifth figure, the switching of the input force switching mechanism 2 is shifted by 25 to the 4WD mode to make the external gear 242 and the input force of the switching gear 24 The inner tooth portion 232 of the transmission gear 23 is engaged and interlocked, and the input shaft 21 of the transmission mechanism can drive the first gear shaft 26, the gear base 3 and the joint base 42 to rotate, and is driven by the joint seat 42 first. The rotation of the two output shafts 41 and 44 enables the vehicle body to be driven by four-wheel drive, and the current wheel turns differently because the rotational speeds of the front-side two-side transmission shafts 61 and 62 are different. At this time, the difference in the rotational speed can be adjusted by the planetary gear 43 to adjust the rotational speed difference, and the present invention The planetary gear 43 of the differential output mechanism 4, the second output shaft 44, and the transmission gear 414 of the first output shaft 41 are integrated in the position of the hollow portion 424 and the recess 425 of the joint seat 42, and the joint seat 42 is embedded in the gear base 3 Socket groove 35 stable Solid combination, can be light and better, and it is better to operate. See the sixth picture. This design can lock the ring 53 when the front wheel of one side of the car is plunged into a hole or the bunker is idling. The tooth portion 542 is directly meshed with the outer tooth portion 33 of the gear holder 3 and the outer tooth portion 411 of the first output shaft 41, and simultaneously rotates the gear base 3 to simultaneously rotate the first output shaft 41 and the second output shaft 44. And the differential is not movable, so that the four wheels of the car body are powered, and when the front wheel of one side is idling, the other side of the front wheel still has power to facilitate the escape. The creation of the differential mechanism may also be other designs, and does not necessarily have to be the embodiment structure of the above-mentioned actual form number A0101, page 10 of 21 [0005], and the foregoing embodiment is an example of the creation, and is not a limitation of the creation. The equivalent change of the spirit of this creation should also fall within the scope of this creation. [Simple description of the diagram] The first diagram is an exploded view of the creation. The second picture is a combination of the creations. The third figure is a schematic cross-sectional view of the creation, showing the 2WD status. The fourth picture is a schematic view of the differential output mechanism of the present creation (the first output shaft is not shown). The fifth figure is a schematic diagram of the unlocked mode in which the present control controls the 4WD state. The sixth figure is a schematic diagram of the lock mode of the 4WD state of the present author. [Main component symbol description] [0006] 1 housing 2 input force switching mechanism 21 input transmission shaft 211 first tooth portion 212 bearing 22 first bearing 23 input transmission gear 231 outer tooth portion 232 inner tooth portion 2 4 switching gear 241 inner tooth Portion 242 outer tooth portion 243 annular groove 2 5 switching fork 251 shaft 252 perforation 253 sleeve portion 254 dial portion 26 first gear shaft 261 bearing 262 bearing 2 6 3 first # wheel 264 second gear 3 gear seat 31 External tooth portion 32 axle portion 3 3 external tooth portion 34 bearing 35 sleeve groove 3 6 engagement hole 3 7 positioning column 4 differential output mechanism 41 first output shaft 411 outer tooth portion 412 inner tooth portion 413 spacer 414 transmission gear 42 Joint 4 21 Engagement Hole Form No. A0101 Page 11 of 21 M378859 4 2 2 Positioning Hole 423 Bearing 4 2 4 Venting Port 4 2 5 Recessed Part 43 Planetary Gear 431 Upper Gear 432 Lower Gear 44 Second Output Shaft 441 External tooth portion 442 Internal tooth portion 5 Locking mechanism 51 Locking wheel 511 Bearing 512 External tooth portion 51 3 Internal tooth portion 52 Shaft rod 5 3 Locking fork 531 Perforation 532 Socket portion 533 Swirling portion 54 Locking ring 541 Ring groove 542 Internal toothing 61 drive shaft 6 2 drive shaft form number A010.1 Page 12 of 21