200302795 (1) 玖、發明說明 【發明所屬之技術領域】 本發明是有關機車之變速操作裝置的改良技術。 【先前技術】 以往所知的用以變速操作機車之變速裝置的變速操作 裝置係有：日本特公昭3 8- 1 325 3號所揭示的「速克達機 車」（以下，簡稱爲先前技術）。 這種先前技術，根據該公報的第4圖和第5圖係從支 承部24 (元件符號是沿用該公報所記載的符號，以下亦 同）朝向左右將管25、26延伸出去，在於左邊的管25可 自由轉動地支承著另一個管27，在於管27的左端，安裝 著扭轉用握把，並且將棒桿29的其中一端安裝在管27， 將滑輪31安裝在棒桿29的另一端，再從滑輪31利用索 線與車輛的變速齒輪箱相連接。 如果轉動該扭轉用握把（相當於手把握持部）以轉動 操作滑輪31的話，將可經由索線來進行變速齒輪箱（相 當於變速裝置）的變速操作，也就是可以進行變換檔位的 操作。 此外，上述的先前技術，係將手柄（相當於離合器握 桿）33安裝於可與管（相當於手把）一起轉動的套管35 ，而能夠以手柄33來操作離合器。 [發明所欲解決的課題] -6 - (2) (2)200302795 上述的先即技術，是將操作變速裝置變速用的扭轉用 握把、滑輪3 1以及索線設置在可自由轉動的手把2 7上， 並且也在手把27上，設置操作離合器用的離合器握桿33 。然而，該公報中並未揭示用來規範手把27的轉動的構 造。當變速檔位是處於空檔（N檔）的位置時，騎士的手 握持住扭轉用握把的狀態下，進行推車或者取車、架車的 時候，如果一不注意轉動到手把2 7的話，就會對於變速 裝置進行變速操作，也就是進行變換檔位的操作而從空檔 變成入檔，將會造成推車、取車或者架車時的處置上不方 便，因此有加以改良以提高使用上的方便性的餘地。 因此，本發明是有鑒於上述的問題點而開發完成的， 其目的是針對於機車之變速操作裝置，提供一種可規範原 本被可自由轉動地支承於車把管上的手把的轉動的技術。 【發明內容】 [用以解決課題之手段] 爲了達成上述目的，本發明的機車之變速操作裝置， 是將手把可自由轉動地支承於機車的車把管，在於這個手 把的一側，設置離合器握桿，在手把的另一側，設置與車 輛的變速裝置相連接的變速索線，只要轉動手把就可操作 變速索線以進行變速操作的機車之變速操作裝置，其特徵 是：在離合器握桿的前端部設有一個突片，在車把管這一 側設有可與該突片相卡合的止動部，且製作成：當變速檔 位是處於空檔（N檔）位置時，該突片與該止動部互相卡合 -7 - (3) (3)200302795 在於可與手把一起轉動的離合器握桿的前端部設有一 個突片，在於固定側的車把管這一側，設有可與該突片卡 合的止動部，並且製作成：只有當變速檔位處於空檔位置 時’兩者才會互相卡合，所以在不握持離合器握桿的狀態 下，可讓突片卡合於止動部。因此，如握持離合器握桿的 話，就無法轉動手把，因爲手把不轉動，所以也就無法進 行變速裝置的變速操作，也就是，無法進行換檔的操作。 因此，在機車處於空檔時，若以這種方式，保持著不握持 離合器握桿，而僅握住手把的手把握持部的狀態下，即使 進行推車、取車或者架車的動作，手把也不會轉動，不會 造成入檔的狀態。因此，可以提高推車、取車或者架車時 的處置上的方便性，所以可提高機車的使用便利性。 【實施方式】 [發明之實施形態] 茲佐以圖面，說明本發明的實施形態如下。此外，本 實施例中所稱的「前」、「後」、「左」、「右」、「上 」、「下」是指由機車騎士所看到的方向。又，圖面則是 採用朝圖中的箭頭方向所看到的圖面。 第1圖是本發明的機車的右側面圖，這種機車10是 具有：安裝在車體框架（未圖示）的頭管的前叉21;和 安裝在前叉21的下部的前輪22 ;和連結在前叉21的上 部的車把管23 (請參考第2圖）；和安裝在車體框架的 -8 - (4) (4)200302795 後部之可讓引擎24a與後輪26成一體地擺動的擺動式引 擎單元24 ;和用以懸吊擺動式引擎單元24的後部的後緩 衝器單元25 ;和安裝在擺動式引擎單元24的後部的後輪 26 ;和配置在車體框架的後部上部的座墊27 ;和用來包 覆車體框架的車殻28的速克達型機車。 擺動式引擎單元24係在於後輪26的右側配置了引擎 24a以及換檔式變速裝置24b，也就是一般所稱的車輪側 邊配置式引擎，且具備有離合器24c。離合器24c是設在 引擎24a與變速裝置24b之間，用以讓引擎24a的輸出傳 達出去或被切斷。此外，擺動式引擎單元24具有：連接 於車輛的變速裝置24b的變速索線3 1 ;和連接於離合器 24c的離合器索線32。 圖中，41是右邊的手把握持部；42是頭燈；43是方 向燈；44是後視鏡；45是前檔泥板；46是置腳板；47是 後檔泥板。 第2圖是第1圖朝箭頭2的方向所看到的視圖，是將 左邊的手把部分具有變速操作裝置50的結構以斷面圖顯 示出來。 這個變速操作裝置50的結構是將手把52可自由轉動 地支承於與前叉21 (請參考第1圖）相連結的車把管23 ，在於這個手把52的其中一側，設置離合器握桿55，在 於手把52的另一側，設置變速索線31，只要轉動手把52 來操作變速索線3 1就可對於車輛的變速裝置24b (請參 考第1圖）進行變速操作。 -9 - (5) (5)200302795 更詳細地說，變速操作裝置5 0是將手把支承部5 1成 一體地設於車把管23的左端’將手把52可自由轉動地支 承在手把支承部5 1，將離合器握桿支承部53安裝在手把 52的左側部分，利用支承銷54將離合器握桿55可自由 擺動地支承在離合器握桿支承部53，此外，將左邊的手 把握持部56安裝於手把52的左端部，將變速操作用滑輪 57安裝在手把52的右端部，將上述變速索線31安裝在 變速用滑輪57。 手把5 2是一個將其右端朝向車體寬度的中央的細長 管體。離合器握桿55是安裝有上述離合器索線32的其中 一端，只要握動該離合器握桿55即可操作該離合器索線 32，而對於擺動式引擎單元24的離合器24c (請參考第1 圖）進行離合操作的。 離合器握桿支承部53以及離合器握桿55係可與手把 52 —起轉動。 本發明的變速操作裝置50的特徵：是在於離合器握 桿55的前端部設有一個突片55a，在於車把管23這一側 ，也就是在於手把支承部51設有一個可與突片55a相卡 合的止動部51a，並且製作成：當變速檔位是處於空檔（N 檔）位置時，突片55a與止動部51a互相卡合。突片55a是 一個從離合器握桿55的右前端朝向車體寬度中央延伸的 棒桿。 第3圖是沿著第2圖中的3 - 3剖面線的剖面圖，是顯 示出：從手把支承部51的外周面朝向直徑方向外方延伸 -10- (6) (6)200302795 出一個止動部5 1 a，在這個止動部5 1 a的前端係形成有一 個略U字狀的止動凹溝51b。藉由將突片55a卡合到這個 止動凹溝51b，即可阻止突片55a的轉動。如果是如假想 線所示般地’將突片55a從止動凹溝51b脫出的話，就變 成可以轉動。5 1 c、5 1 c是位於止動凹溝5 1 b的兩側的止動 突部。 此外，第3圖也顯示了突片55a相對於手把支承部5 1 的位置關係以及變速位置關係。具體的變速位置係對應於 上述變速裝置的變速位置（檔位），「N」表示空檔位置（中 II位置）；「1st」表示一檔位置；「2nd」表示二檔位置； 「3rd」表示三檔位置；「4th」表示四檔位置。在圖中， 是將「1st」、「2nd」、「3rd」、「4th」的順序呈逆時 鐘方向排列。 車把管23這一側的止動部51a的特徵是：將該止動 部51a設在當變速檔位處於空檔位置「N」時可與離合器 握桿5 5相卡合的位置。也就是說，止動部5 1 a是位於當 空檔「N」時，可與離合器握桿55相卡合的位置。 其次，佐以第4圖〜第7圖說明上述結構的變速操作 裝置50的作用。第4圖（a)、（b)是本發明的變速操作裝置 的作用圖之一，第4圖（a)是變速操作裝置50的示意圖； 第4圖（b)是顯示將第4圖U)以b-b剖面線剖開時的重要 部位。 第4圖（a)是顯示出機車騎士的手已經從離合器握桿 55放開後的狀態。此時的離合器是處於離合器接合狀態 -11 - (7) (7)200302795 (入檔狀態）。亦即，是處於上述第1圖所示的引擎24a 的輸出可經由變速裝置24b傳達到後輪26的狀態。離合 器握桿5 5是經由離合器索線3 2被位於離合器這一側的彈 性構件所拉曳，所以可一直維持離合器接合狀態。突片 55a則是如第4圖（b)所示般地，卡合於止動部51a，所以 可阻止離合器握桿55、離合器握桿支承部53以及手把52 的轉動。 在這種狀態下，若握持離合器握桿55令其朝向手把 握持部56這一側擺動（箭頭（1)的方向）的話，突片55a將 會脫離止動部51a往上方移動（箭頭（2)的方向）。這種狀態 係顯示於第5圖。 第5圖（a)、（b)是本發明的變速操作裝置的作用圖之 二，第5圖（a)是變速操作裝置50的示意圖；第5圖（b)是 顯示將第5圖（a)以b-b剖面線剖開時的重要部位。 第5圖（a)是顯示握持住離合器握桿55的狀態。此時 的離合器是處於離合器分開的狀態。因此，如第5圖（b) 所示般地，突片55a已經脫離了止動部51a，所以能夠與 離合器握桿55、離合器握桿支承部53以及手把52 —起 轉動。 保持著握持離合器握桿55的狀態，可以將手把握持 部56朝右或朝左旋轉操作。藉由轉動手把握持部56，可 利用手把52轉動變速操作用滑輪57，進而能夠以變速索 線31來操作變速裝置24b (請參考第1圖）進行變速。 例如：將手把握持部56朝順時鐘方向轉動（箭頭（3)的 -12- (8) (8)200302795 方向），突片55a就會從空檔位置「n」往一檔位置「1st」 這一側移動（箭頭（4)的方向）。這種狀態顯示於第6圖。 第6圖（a)、（b)是本發明的變速操作裝置的作用圖之 三，第6圖U)是變速操作裝置50的示意圖；第6圖（b)是 顯示將第6圖（a)以b-b剖面線剖開時的重要部位，是顯示 出突片55a從空檔位置「N」往一檔位置「1st」移動。移 動之後，即使將手從離合器握桿55放開，突片55a的轉 動亦不會受到止動部5 1 a所阻止。 再度握住離合器握桿55並且將手把握持部56朝向逆 時鐘方向轉動，將突片55a送回到空檔位置「N」之後， 再將手從離合器握桿55放開的話，亦可如第4圖所示般 地，令突片55a卡合於止動部51a。 第7圖（a)、（b)是本發明的變速操作裝置的作用圖之 四，第7圖（a)是變速操作裝置50的示意圖；第7圖（b)是 顯示將第7圖（a)以b-b剖面線剖開時的重要部位。 握住離合器握桿55 (朝箭頭（5 )的方向），將離合 器握桿55朝向逆時鐘方向轉動（朝箭頭（6)的方向）， 突片55a就從空檔位置「N」朝往二檔位置「2nd」移動（ 朝箭頭（7 )的方向）。移動之後，即使將手從離合器握 桿55放開，突片55a的轉動亦不會受到止動部51a所阻 止。不必握住離合器握桿55，就可以在二檔位置「2nd」 與三檔位置「3rd」與四檔位置「4th」之間，自由地進行 變速操作。 第8圖係本發明的變速操作裝置的變形實施例的圖， -13- 200302795 Ο) 係對應於上述第3圖，顯示出突片55a相對於手把支承部 51的位置關係以及變速位置關係。至於變形例的其他結 構則都與上述第1圖〜第3圖所示的實施例同一結構，因 此都標示同一符號，並且省略其說明。 變形例的變速操作裝置50的特徵是將變速位置的空 檔位置「N」；一檔位置「1st」：二檔位置「2nd」；三 檔位置「3rd」以及四檔位置「4th」，在圖中，依「1st」 、「2nd」、「3rd」、「4th」的順序呈逆時鐘方向排列。 並且將「1st」、「2nd」、「3rd」以及「4th」集中 配置於較之「N」更位於圖中的左側。因此，只要將止動 部5 1 a中的一個止動突起5 1 c設置於「1 st」這一側即可。 當突片55a如第8圖中的假想線所示般地從止動部51a脫 開的話，就可以朝向「1 st」這一側轉動。 即使在於這種變形例中，也是以將車把管23這一側 的止動部51a設置於當變速檔位是處於空檔「N」位置時 可與離合器握桿55卡合的位置爲其特徵。也就是說，止 動部51a係位於：可在空檔位置「N」處，可供突片55a 卡合的位置。 其次，佐以第2圖以及第9圖和第10圖，說明上述 第8圖的變形例的作用。 第9圖係本發明的變速操作裝置的變形實施例的作用 圖之一。藉由握持住離合器握桿55(請參考第2圖）， 突片55a會從止動部51a脫開而來到假想線所示的位置。 再以保持握住離合器握桿55的狀態將手把握持部56 (請 -14- (10) (10)200302795 參考第2圖）朝逆時鐘方向轉動，即可將突片55a從空檔 位置「N」往一檔位置「1 st」移動。移動之後，即使將手 從離合器握桿55放開，突片55a的轉動也不會受到止動 部5 1 a所阻止。 再度握持住離合器握桿55將手把握持部56朝向順時 鐘方向轉動，將突片55a送回到空檔位置「N」之後，將 手放離開離合器握桿55，亦可讓突片55a卡合於止動部 5 1 a ° 第1 0圖係變形例的變速操作裝置的作用圖之二。在 於令突片55a從空檔位置「N」移動到一檔位置「lst」之 後，不必再握住離合器握桿5 5，只要轉動手把握持部5 6 就可以在一^檔位置「1st」與—^檔位置「2nd」與三檔位置 「3rd」與四檔位置「4th」之間，自由地進行變速操作。 綜合整理以上的內容加以說明的話，本發明係如第2 圖和第3圖所示般地，是在於可與手把52 —起自由轉動 的離合器握桿55的前端部，設置一個突片55a，在於固定 側的車把管23這一側，設置可與突片55a相卡合的止動 部51a，且製作成：當變檔位置在於空檔位置「N」時， 突片5 5 a與止動部5 1 a互相卡合。所以，在於手不握住離 合器握桿55的狀態下，亦可讓突片55a卡合於止動部51a 。因此，只要不握住離合器握桿55的話，就無法轉動手 把52。因爲手把52不會轉動，所以就無法進行變速裝置 的變速操作，也就是說，不會進行換檔操作。在空檔時， 若以這種方式，保持著不握住離合器握桿55，只是握住 -15- (11) (11)200302795 手把5 2的手把握持部5 6的狀態下，即使進行推車、取車 或者架車的動作，手把52也不會轉動，不會造成Λ檔的 狀態。因此，可以提高推車、取車或者架車時的處置上的 方便性，所以可提高機車的使用便利性。 此外，本發明是將止動部5 1 a設置於變速檔位爲空檔 「N」時，可與離合器握桿55互相卡合的位置處，如此一 來，當變速檔位爲空檔「N」時，離合器握桿55的突片 5 5 a就會卡合到止動部5 1 a。因此，可以提高推車、取車 或者架車時的處置上的方便性。 此外，本發明的上述實施形態中，變速操作裝置5 0 就不限定是設置於左邊的車把部分上，也可以設置於右邊 的車把部分上。 再者，雖然是以將止動部51a設置在空檔位置「N」 的例子來進行說明，但是，亦可在於變速檔位的各個檔位 (亦即，一檔位置「1st」、二檔位置「2nd」、三檔位置 「3rd」、四檔位置「4th」）上，也設置止動部51a。 [發明的效果] 本發明根據上述的結構可發揮下列的效果。 因爲是將突片設在可與手把一起自由轉動的離合器握 桿的前端部，在於固定側的車把管這一側設有可與突片相 卡合的止動部，且製作成：當變速檔位是處於空檔（N檔） 位置時，該突片與該止動部互相卡合。因此，當如果不握 住離合器握桿的話，就無法轉動手把。因爲手把不轉動’ -16- (12) (12)200302795 所以也就無法進行變速裝置的變速操作，亦即，無法進行 換檔操作。在空檔時，若以這種方式，保持著不握住離合 器握桿，只是握住手把的手把握持部的狀態下，即使進行 推車、取車或者架車的動作，手把也不會轉動，不會造成 入檔的狀態。因此，可以提高推車、取車或者架車時的處 置上的方便性，所以可提高機車的使用便利性。 【圖面之簡單說明】 第1圖係本發明相關連的機車的右側面圖。 第2圖係第1圖朝箭頭2的方向所看到的視圖。 第3圖是沿著第2圖中的3-3剖面線的剖面圖。 第4圖（a)(b)係本發明的變速操作裝置的作用圖之一 〇 第5圖（a)(b)係本發明的變速操作裝置的作用圖之二 〇 第6圖（a)(b)係本發明的變速操作裝置的作用圖之三 〇 第7圖（a)(b)係本發明的變速操作裝置的作用圖之四 〇 第8圖係本發明的變速操作裝置的變形實施例。 第9圖係本發明的變速操作裝置的變形實施例的作用 圖之一。 第1 0圖係本發明的變速操作裝置的變形實施例的作 用圖之—^ -17- (13) (13)200302795 [圖號說明] 10 :機車 23 :車把管 24 :擺動式引擎單元 24a :引擎 24b :變速裝置 24c :離合器 3 1 :變速索線 3 2 :離合器索線 50 :機車之變速操作裝置 5 1 :手把支承部 5 1 a :止動部 5 1 b :止動凹溝 5 1 c :止動突部 52 :手把 53 :離合器握桿支承部 5 4 :支承銷 55 :離合器握桿 55a :突片 56 :左邊的手把握持部 57 :變速操作用滑輪 N :空檔位置200302795 (1) (ii) Description of the invention [Technical field to which the invention belongs] The present invention relates to an improved technology for a variable speed operating device of a locomotive. [Prior art] The conventionally known shift operating devices for shifting operating the shifting device of a locomotive include the "Sukoda Locomotive" disclosed in Japanese Patent Publication No. 3 8-1325 (hereinafter referred to as the prior art). . According to this prior art, according to Figures 4 and 5 of the publication, the tubes 25 and 26 are extended from the support portion 24 (the component symbols follow the symbols described in the publication, and the same applies hereinafter) to the left and right. The tube 25 is rotatably supported by another tube 27. The left end of the tube 27 is provided with a twist grip, one end of the rod 29 is mounted on the tube 27, and the pulley 31 is mounted on the other end of the rod 29. Then, it is connected to the transmission gearbox of the vehicle by a cable from the pulley 31. If the twisting grip (equivalent to the hand grip) is used to rotate the operation pulley 31, the shifting operation of the transmission gearbox (equivalent to the transmission device) can be performed through the cable, that is, the gear can be changed. operating. In addition, in the above-mentioned prior art, a handle (equivalent to a clutch lever) 33 is attached to a sleeve 35 that can be rotated together with a pipe (equivalent to a handle), and the clutch can be operated with the handle 33. [Problems to be Solved by the Invention] -6-(2) (2) 200302795 The above-mentioned prior art is a method in which a torsion grip, a pulley 31, and a cable for operating a transmission are shifted to a freely rotatable hand. A clutch lever 33 for operating the clutch is provided on the handle 2 and also on the handle 27. However, the publication does not disclose the structure for regulating the rotation of the handlebar 27. When the shift position is in the neutral position (N position), when the knight's hand is holding the twist grip, when carrying a cart or picking up or setting up the car, if you accidentally turn it to the handlebar 2 If it is 7, the shifting operation will be performed on the gear shifting device, that is, the gear shifting operation is performed to change from neutral to incoming gear, which will cause inconvenience in handling when pushing, picking up or setting up the vehicle, so it has been improved. To improve the convenience of use. Therefore, the present invention has been developed in view of the above-mentioned problems, and an object thereof is to provide a technology for regulating the rotation operation device of a locomotive, which can regulate the rotation of a handlebar originally rotatably supported on a handlebar tube. . [Summary of the Invention] [Means to Solve the Problems] In order to achieve the above-mentioned object, the variable speed operating device of the locomotive of the present invention is a handlebar tube which rotatably supports a handlebar on the locomotive. A clutch lever is provided, and a shift cable connected to the vehicle's gear shift device is provided on the other side of the handlebar. The gear shift operating device of the locomotive can be operated as long as the handlebar is turned to perform the gear shift operation. : A protruding piece is provided at the front end of the clutch grip, and a stopper that can be engaged with the protruding piece is provided on the side of the handlebar tube, and is made as follows: When the shift position is in neutral (N Position), the protruding piece and the stopper are engaged with each other. -7-(3) (3) 200302795 is located at the front end of the clutch lever which can be rotated together with the handlebar. A protruding piece is provided at the fixed side. On the side of the handlebar tube, there is a stopper that can be engaged with the protruding piece, and it is made so that the two will only engage with each other when the shift position is in the neutral position, so the clutch is not held In the state of holding the lever, the tab can be engaged with Moving part. Therefore, if the clutch lever is held, the handlebar cannot be turned. Because the handlebar does not rotate, the shifting operation of the transmission cannot be performed, that is, the shifting operation cannot be performed. Therefore, when the locomotive is in neutral, if the clutch lever is not held in this way, and only the grip portion of the handle is held, even if the cart Action, the handle will not turn, it will not cause the state of entering the gear. Therefore, it is possible to improve the convenience of handling when pushing a cart, picking up a vehicle, or erecting a vehicle, so that the convenience of use of a locomotive can be improved. [Embodiment] [Embodiment of the invention] The following describes the embodiment of the present invention with reference to the drawings. In addition, the "front", "rear", "left", "right", "up", and "down" referred to in this embodiment refer to directions viewed by the locomotive rider. The drawing is a drawing viewed in the direction of an arrow in the drawing. Figure 1 is a right side view of a locomotive of the present invention. This locomotive 10 is provided with: a front fork 21 mounted on a head pipe of a vehicle body frame (not shown); and a front wheel 22 mounted on a lower portion of the front fork 21; And the handlebar tube 23 (refer to Figure 2) connected to the upper part of the front fork 21; and -8-(4) (4) 200302795 installed at the rear of the body frame so that the engine 24a can be integrated with the rear wheel 26 A swing-type engine unit 24 that swings in the ground; and a rear bumper unit 25 that suspends the rear portion of the swing-type engine unit 24; and a rear wheel 26 mounted on the rear portion of the swing-type engine unit 24; and A seat cushion 27 at the upper rear portion; and a Scooter type locomotive for covering the body shell 28 of the vehicle body frame. The swing-type engine unit 24 includes an engine 24a and a shift-type transmission 24b on the right side of the rear wheel 26, which is a so-called wheel-side arrangement engine, and includes a clutch 24c. The clutch 24c is provided between the engine 24a and the transmission 24b to allow the output of the engine 24a to be transmitted or cut off. Further, the swing type engine unit 24 includes: a shift cable 3 1 connected to a transmission 24b of a vehicle; and a clutch cable 32 connected to a clutch 24c. In the figure, 41 is the right hand grip; 42 is the headlight; 43 is the direction light; 44 is the rearview mirror; 45 is the front fender; 46 is the footboard; 47 is the rear fender. Fig. 2 is a view of Fig. 1 as viewed in the direction of arrow 2 and shows the structure of the left handlebar portion having the shift operation device 50 in a sectional view. This shift operation device 50 is structured to rotatably support a handlebar 52 to a handlebar tube 23 connected to a front fork 21 (refer to FIG. 1). A clutch grip is provided on one side of the handlebar 52. The lever 55 is on the other side of the handlebar 52 and is provided with a shift cable 31. As long as the handlebar 52 is turned to operate the shift cable 31, the shifting operation of the vehicle's transmission 24b (refer to FIG. 1) can be performed. -9-(5) (5) 200302795 In more detail, the shift operation device 50 is provided with the handlebar support portion 51 integrally provided at the left end of the handlebar tube 23, and the handlebar 52 is rotatably supported at The handlebar support portion 51 is provided with the clutch lever support portion 53 on the left side of the handlebar 52, and the clutch lever 55 is swingably supported on the clutch lever support portion 53 with a support pin 54. The grip portion 56 is attached to the left end portion of the handlebar 52, the shift operation pulley 57 is attached to the right end portion of the handlebar 52, and the shift cable 31 is attached to the shift pulley 57. The handlebar 5 2 is an elongated tube body whose right end faces the center of the width of the vehicle body. The clutch lever 55 is one end of the above-mentioned clutch cable 32. The clutch cable 32 can be operated by holding the clutch lever 55. For the clutch 24c of the swing engine unit 24 (refer to FIG. 1) For clutch operation. The clutch lever support portion 53 and the clutch lever 55 are rotatable together with the handle 52. The shift operation device 50 of the present invention is characterized in that a protruding piece 55a is provided at the front end of the clutch grip 55, and the handlebar tube 23 side, that is, a handle supporting portion 51 is provided with a protruding piece The 55a phase is engaged with the stopper portion 51a, and is manufactured so that when the shift position is in the neutral (N position) position, the protruding piece 55a and the stopper portion 51a are engaged with each other. The projecting piece 55a is a rod extending from the right front end of the clutch lever 55 toward the center of the width of the vehicle body. Fig. 3 is a cross-sectional view taken along the line 3-3 in Fig. 2 and shows that it extends outward from the outer peripheral surface of the handle support portion 51 in the diameter direction -10- (6) (6) 200302795 A stopper 5 1 a is formed at the front end of the stopper 5 1 a with a substantially U-shaped stopper groove 51b. By engaging the projection piece 55a with this stopper groove 51b, the rotation of the projection piece 55a can be prevented. If the protruding piece 55a is pulled out from the stopper groove 51b as shown by an imaginary line, it becomes rotatable. 5 1 c and 5 1 c are stop projections on both sides of the stop groove 5 1 b. In addition, Fig. 3 also shows the positional relationship and the shifting positional relationship of the protruding piece 55a relative to the handlebar support portion 5 1. The specific shifting position corresponds to the shifting position (gear position) of the above-mentioned shifting device, "N" represents the neutral position (middle II position); "1st" represents the first gear position; "2nd" represents the second gear position; "3rd" Indicates the third gear position; "4th" indicates the fourth gear position. In the figure, the order of "1st", "2nd", "3rd", and "4th" is arranged counterclockwise. The stopper portion 51a on the side of the handlebar tube 23 is characterized in that the stopper portion 51a is provided at a position where it can be engaged with the clutch lever 55 when the shift position is in the neutral position "N". That is, the stopper 5 1 a is located at a position where it can be engaged with the clutch lever 55 when the neutral position is "N". Next, the operation of the shift operation device 50 having the above-mentioned structure will be described with reference to Figs. 4 to 7. 4 (a) and 4 (b) are one of the action diagrams of the shift operation device of the present invention, and FIG. 4 (a) is a schematic diagram of the shift operation device 50; FIG. 4 (b) is a view showing the fourth FIG. ) The important part when cut with the bb section line. Fig. 4 (a) shows a state where the cyclist's hand has been released from the clutch lever 55. The clutch at this time is in the clutch engaged state -11-(7) (7) 200302795 (in gear). That is, the output of the engine 24a shown in the above-mentioned FIG. 1 can be transmitted to the rear wheels 26 via the transmission 24b. The clutch lever 55 is pulled by the elastic member on the clutch side via the clutch cable 32, so the clutch engagement state can be maintained at all times. The protruding piece 55a is engaged with the stopper portion 51a as shown in FIG. 4 (b), so that the clutch lever 55, the clutch lever support portion 53, and the handle 52 can be prevented from rotating. In this state, if the clutch lever 55 is swung toward the side of the hand grip 56 (in the direction of arrow (1)), the protruding piece 55a will move away from the stopper 51a and move upward (arrow (2) direction). This state is shown in Figure 5. 5 (a) and 5 (b) are the second operational diagram of the shift operating device of the present invention, and FIG. 5 (a) is a schematic diagram of the shift operating device 50; FIG. 5 (b) is a diagram showing the fifth figure ( a) Important parts when cut with bb section line. FIG. 5A shows a state where the clutch lever 55 is held. The clutch at this time is in a state where the clutch is disengaged. Therefore, as shown in FIG. 5 (b), the protruding piece 55a has been disengaged from the stopper portion 51a, so that it can rotate together with the clutch lever 55, the clutch lever support portion 53, and the handle 52. While holding the clutch lever 55, the hand grip 56 can be rotated to the right or left. By turning the grasping portion 56 by the hand, the shift operation pulley 57 can be rotated by the handle 52, and the shift device 24b (refer to FIG. 1) can be operated by the shift cable 31 to perform shifting. For example: Turn the hand grip 56 clockwise (in the direction of -12- (8) (8) 200302795 of the arrow (3)), the tab 55a will move from the neutral position "n" to the first gear position "1st ”This side moves (in the direction of arrow (4)). This state is shown in Figure 6. 6 (a) and 6 (b) are the third operation diagram of the shift operation device of the present invention, and FIG. 6 (U) is a schematic view of the shift operation device 50; FIG. 6 (b) is a diagram showing the change of FIG. 6 (a ) An important part when cut along the bb section line is that the protruding piece 55a is shown to move from the neutral position "N" to the first gear position "1st". After the movement, even if the hand is released from the clutch lever 55, the rotation of the projection 55a is not blocked by the stopper 5a. After holding the clutch lever 55 again and turning the hand grip 56 in the counterclockwise direction, return the tab 55a to the neutral position "N", and then release the hand from the clutch lever 55. As shown in FIG. 4, the protruding piece 55a is engaged with the stopper portion 51a. 7 (a) and 7 (b) are the fourth operational diagrams of the shift operating device of the present invention, and FIG. 7 (a) is a schematic diagram of the shift operating device 50; FIG. 7 (b) is a diagram showing the seventh figure ( a) Important parts when cut with bb section line. Hold the clutch lever 55 (in the direction of arrow (5)), turn the clutch lever 55 in the counterclockwise direction (in the direction of arrow (6)), and the tab 55a will move from the neutral position "N" to two The shift position "2nd" moves (toward the arrow (7)). After the movement, even if the hand is released from the clutch lever 55, the rotation of the projection 55a is not blocked by the stopper portion 51a. Without holding the clutch lever 55, the shift operation can be freely performed between the second gear position "2nd" and the third gear position "3rd" and the fourth gear position "4th". FIG. 8 is a diagram of a modified embodiment of the shift operating device of the present invention, and -13-200302795 0) is a view corresponding to the above-mentioned FIG. 3, showing the positional relationship and the shifting positional relationship of the protruding piece 55a relative to the handle support portion 51 . The other structures of the modification are the same as those of the embodiment shown in Figs. 1 to 3, and therefore the same reference numerals are used, and descriptions thereof are omitted. The shift operation device 50 of the modified example is characterized in that the neutral position "N" of the shift position; the first position "1st": the second position "2nd"; the third position "3rd" and the fourth position "4th", In the figure, they are arranged counterclockwise in the order of "1st", "2nd", "3rd", and "4th". In addition, "1st", "2nd", "3rd", and "4th" are collectively arranged on the left side of the figure rather than "N". Therefore, one stop projection 5 1 c in the stop portion 5 1 a may be provided on the "1 st" side. When the protruding piece 55a is disengaged from the stopper portion 51a as shown by an imaginary line in FIG. 8, it can rotate toward the "1st" side. Even in this modification, the stopper portion 51a on the side of the handlebar tube 23 is set to a position where it can be engaged with the clutch lever 55 when the shift position is in the neutral "N" position. feature. That is, the stopper portion 51a is located at a position where it can be in the neutral position "N" and can be engaged with the protruding piece 55a. Next, the operation of the modification of the above-mentioned Fig. 8 will be described with reference to Figs. 2 and 9 and 10. Fig. 9 is one of the operational diagrams of a modified embodiment of the shift operating device of the present invention. By holding the clutch lever 55 (see FIG. 2), the protruding piece 55 a is disengaged from the stopper portion 51 a and reaches a position shown by an imaginary line. Then, while holding the clutch lever 55, turn the hand grip 56 (see -14- (10) (10) 200302795 as shown in Figure 2) in the counterclockwise direction to move the tab 55a from the neutral position. "N" moves to the first gear position "1 st". After the movement, even if the hand is released from the clutch lever 55, the rotation of the projection 55a is not prevented by the stopper 5a. Hold the clutch lever 55 again, turn the hand grip 56 in the clockwise direction, return the tab 55a to the neutral position "N", and then release your hand from the clutch lever 55 to allow the tab 55a. Engaged with the stopper 5 1 a ° FIG. 10 is the second operation diagram of the shift operation device according to the modification. After the protruding piece 55a is moved from the neutral position "N" to the first gear position "lst", it is not necessary to hold the clutch lever 5 5 anymore, as long as the hand is grasped by the holding portion 5 6, the first gear position "1st" And-^ gear position "2nd" and third gear position "3rd" and fourth gear position "4th", the shift operation can be freely performed. If the above contents are summarized and explained, as shown in FIG. 2 and FIG. 3, the present invention is provided with a protruding piece 55a at the front end of the clutch lever 55 that can rotate freely together with the handle 52. On the side of the handlebar tube 23 on the fixed side, a stopper portion 51a that can be engaged with the protruding piece 55a is provided, and is manufactured so that when the shift position is in the neutral position "N", the protruding piece 5 5 a Engages with the stopper 5 1 a. Therefore, in a state where the clutch grip lever 55 is not held by the hand, the protruding piece 55a can also be engaged with the stopper portion 51a. Therefore, as long as the clutch lever 55 is not held, the handle 52 cannot be turned. Since the handle 52 does not rotate, the shifting operation of the transmission cannot be performed, that is, the shifting operation is not performed. In the neutral state, if in this way, the clutch lever 55 is not held, and only -15- (11) (11) 200302795 is held in the state of holding the holding part 5 6 with the hand 5 2 even if Carrying out the action of pushing, picking or erecting the car, the handlebar 52 will not rotate, and it will not cause the state of Λ gear. Therefore, it is possible to improve the convenience in handling when pushing, picking up, or erecting the vehicle, and thus to improve the convenience of use of the locomotive. In addition, in the present invention, when the stop portion 5 1 a is set at a position where the shift position is neutral "N", it can be engaged with the clutch lever 55. Thus, when the shift position is neutral " When N ", the projection 5 5 a of the clutch lever 55 is engaged with the stopper 5 1 a. Therefore, it is possible to improve convenience in handling when pushing, picking up, or erecting a cart. In addition, in the above-mentioned embodiment of the present invention, the shift operation device 50 is not limited to being provided on the left handlebar portion, and may be provided on the right handlebar portion. In addition, although the description is given by taking the example in which the stopper portion 51a is set to the neutral position "N", it may also be in each of the shift positions (that is, the first position "1st", the second position The position "2nd", the third gear position "3rd", and the fourth gear position "4th") are also provided with stoppers 51a. [Effects of the Invention] The present invention can exhibit the following effects according to the configuration described above. Because the protruding piece is provided at the front end of the clutch lever that can rotate freely with the handlebar, a stopper portion that can be engaged with the protruding piece is provided on the fixed side of the handlebar tube, and is manufactured as: When the shift position is in the neutral (N position) position, the protruding piece and the stopper are engaged with each other. Therefore, the handle cannot be turned without holding the clutch lever. Since the handlebar does not turn, -16- (12) (12) 200302795, the shifting operation of the transmission cannot be performed, that is, the shifting operation cannot be performed. In the neutral state, if the clutch lever is not held in this way, but the state of the hand holding the handle is held, even when the cart, the cart or the cart is moved, the handle is also It will not rotate and will not cause the file to enter the state. Therefore, it is possible to improve the convenience of handling when pushing a cart, picking up a vehicle, or erecting a vehicle, and thus to improve the convenience of use of a locomotive. [Brief description of the drawings] FIG. 1 is a right side view of a locomotive related to the present invention. FIG. 2 is a view of FIG. 1 as viewed in the direction of arrow 2. Fig. 3 is a cross-sectional view taken along a line 3-3 in Fig. 2. Fig. 4 (a) and (b) are one of the operational diagrams of the shift operation device of the present invention. Fig. 5 (a) and (b) are operational diagrams of the shift operation device of the present invention. Fig. 6 (a) (b) No. 30 of the operation diagram of the shift operation device of the present invention. FIG. 7 (a) (b) No. 40 of the operation diagram of the shift operation device of the present invention. FIG. 8 is a modification of the shift operation device of the present invention. Examples. Fig. 9 is one of the operational diagrams of a modified embodiment of the shift operating device of the present invention. FIG. 10 is an operation diagram of a modified embodiment of the shift operation device of the present invention. ^ -17- (13) (13) 200302795 [Explanation of Drawing Numbers] 10: Locomotive 23: Handlebar Tube 24: Swing Engine Unit 24a: Engine 24b: Transmission 24c: Clutch 3 1: Transmission cable 3 2: Clutch cable 50: Transmission operating device 5 of the locomotive 5 1: Handle support 5 1 a: Stopper 5 1 b: Stopper recess Groove 5 1 c: Stopper protrusion 52: Handle 53: Clutch lever support part 5 4: Support pin 55: Clutch lever 55a: Projection piece 56: Left hand grip part 57: Variable speed operation pulley N: Neutral position