510887510887
五、發明說明（1 ) 發明背景 本發明係有關於一種叉架升降機之操作桿。明確地，本 發明係有關一種可供一操作人員站立於其中之叉架升降機 的操作桿。 可提供一操作人員站立於其中的一典型拉伸式電池動力 叉架升降機中，一操作人員室係位於本體框架後側附近。 該操作人員室中之一操作人員係操縱該叉架升降機來移動 及操控一負載。該操作人員室係由設於左側上之一旁側框 架、一前側框架、及設於左側上之一防護框架所定義。 第7圖係一操作人員可站立於其中之一拉伸式叉架升降 機的局部前視圖。一駕駛盤1係配置於一旁側面板上，且 該旁側面板係位於該旁側框架上方部處。譬如，一舉升桿 3、一傾側桿4、及一拉伸桿5係配置於一前側面板2上， 且該前側面板係位於該前側框架上方部處。舉升桿3係用 於舉升及降下一叉架。傾側桿4係用於傾側該叉架。拉伸 桿5係用於移動桅桿。用於移動本體框架的一驅動桿6係 設於前側面板2之右側部上。舉升桿3、傾側桿4、拉伸 桿5、及驅動桿6係向前及向後傾側。 一操作人員7係以左手操控駕駛盤1。同時，操作人員 7係以右手操控舉升桿3、傾側桿4、拉伸桿5、及驅動桿 6。在拉伸式叉架升降機中，操作人員7經常需要同時或 連貫地操控一負載、或更明確地爲舉升及降下一叉架及移 動本體框架。因此，操作人員7需以右手操控舉升桿3、V. Description of the invention (1) Background of the invention The present invention relates to an operating lever of a forklift. Specifically, the present invention relates to an operating lever of a forklift in which an operator can stand. A typical stretch-type battery-powered forklift can be provided in which an operator stands, and an operator's room is located near the rear side of the body frame. An operator in the operator's room operates the forklift to move and manipulate a load. The operator room is defined by a side frame provided on the left side, a front side frame, and a protective frame provided on the left side. Figure 7 is a partial front view of an operator's one of the reachable forklifts. A steering wheel 1 is disposed on a side panel, and the side panel is located above the side frame. For example, a lift lever 3, a tilt side lever 4, and a stretch lever 5 are arranged on a front side panel 2, and the front side panel is located above the front side frame. Lifting rod 3 is used to raise and lower the fork. The tilt bar 4 is used to tilt the fork. The extension rod 5 is used to move the mast. A driving rod 6 for moving the body frame is provided on the right side portion of the front side panel 2. The lift lever 3, the tilt lever 4, the stretch lever 5, and the drive lever 6 are tilted forward and backward. An operator 7 controls the steering wheel 1 with his left hand. At the same time, the operator 7 controls the lift lever 3, the tilt lever 4, the stretching lever 5, and the driving lever 6 with his right hand. In a stretched forklift, the operator 7 often needs to simultaneously or continuously control a load, or more specifically to lift and lower the forklift and move the body frame. Therefore, the operator 7 needs to control the lift lever 3 with his right hand.
510887 五、發明說明（2) 傾側桿4、及拉伸桿5，且同時以右前臂或右手肘操控驅 動桿6。 當操作人員7需要在舉升或降下該叉架的同時將本體框 架之運動由前向方向改變至後向方向時，操作人員7需要 抬起右手臂且在向後推壓驅動桿6之前再次抓握桿件3。 這種操縱動作係複雜且低效率。更，當操控一負載時需經 常執行上述操縱動作。是以，操作人員7將愈發感到疲累 〇 曰本早期公開專利申請案第1 0 - 236797號中揭露一種操 作1干’其可运擇性地向則、向後、向左、及向右傾側。當 '該操作桿向前或向後傾側時，車輛將據此運動。當該操作 桿向左或向右傾側時，一叉架將據此而舉升或下降。 依據上述操作桿，該叉架之運動方向係與該桿件者不同 。因此，一操作人員將感到不舒適且該操作人員需長時間 才可熟練該桿件之操縱。 發明槪要 本發明之目的係提供一種有助於操控一負載及移動一手 柄之動作的操作桿。 爲了達成上述目的，本發明係提供一種設於一叉架升降 機本體框架上的操作桿。該桿件包括一桿體、一手柄、及 一把手。該桿體係配置於本體框架上且得傾側。該手柄係 配置於該桿體上。該手柄外型係形成爲可由手掌朝下之一 手抓握。該把手係以可旋轉式配置於該手柄上。該把手係 510887 五、發明說明（3) 藉由抓握著該手柄之一手拇指選擇性地向上及向下移動該 把手而旋轉。 本發明亦提供一種具有可供一操作人員站立於其中之一 操作人員室的叉架升降機。該叉架升降機包括設於該操作 人員室前方部的一前側面板、一操作桿、一第一偵測設備 、一第二偵測設備、及一控制器。該操作桿包括一桿體、 一手柄、及一把手。該桿體係配置於該前側面板上且可選 擇性地向前及向後傾側。該手柄係配置於該桿體上。該手 柄外型係形成爲可由手掌朝下之一手抓握者。該把手係以 可旋轉式配置於該手柄上。該把手係藉由抓握著該手柄之 一手拇指向上及向下移動該把手而旋轉。該第一偵測設備 係偵測該桿體之傾斜方向及傾斜角度。該第二偵測設備係 位於該手柄中。該第二偵測設備係偵測該把手之旋轉方向 及旋轉角度。該控制器係依據該第一偵測設備之偵測値來 控制基礎框架沿相同於該桿體傾斜方向的方向運動，且依 據該第二偵測設備之偵測値來控制一叉架沿相同於該把手 旋轉方向的方向舉升及下降。 本發明之其他構想及優點將由以下結合隨附圖式且藉範 例闡明本發明原理的說明而變得明顯。 附圖之簡單說明 藉由以下之較佳具體實施例說明以及隨附圖式將可最淸 楚地了解本發明及其目的與優點。 第1圖係顯示依據本發明一第一具體實施例，可提供一 510887 五、 發明說明（4) 操 作人 員 站立於其中之一拉伸式電池動力叉架升降機的 局 部 透 視 圖 1 第 2 圖 係顯示設於第1圖叉架升降機中之操作桿的透 視 圖 > 第 3 圖 係第2圖中所示操作桿的一平面圖； 第 4 圖 係顯示沿第3圖中線4 - 4觀察之操作桿側視圖 9 第 5 圖 係顯示沿第4圖中線5 - 5觀察之操作桿手柄側 視 圖 y 第 6 圖 係顯示關於本發明操作桿之用於移動該叉架升 降 機 且 操 控 一負載之一控制系統的槪略圖示；及 第 7 圖 丨係顯示一先前技藝拉伸式電池動力叉架升降機 的 局 部 刖 視 圖。 較 伟 具 實施例詳細說明 現在 將 參考第1圖至第6圖來說明依據本發明一第一 具 體 實 施 例 的一拉伸式電池動力叉架升降機1 0。第1圖係 顯 示 叉 架 升 降機1 0之一操作人員室1 2之一部份。一操作人 員 在 操 作 叉架升降機1 0來移動且操控一負載時係站立 於 叉 架升 降 機1 0之操作人員室1 2中。 操 作人 員7自操作人員室1 2朝桅桿1 4觀看之方向係 稱 爲 刖 向 方 向。操作人員室1 2係由一前側框架1 6、位於左 側 上 之 -^ 旁側框架18、及位於右側上之一防護框架20 所 定 義 〇 .、，一 刖 側框架16係設於本體框架前側上以覆蓋譬如 用 於 操 控 負載的一控制器及一油壓控制閥。旁側框架 -6- 18 510887 五、發明說明（5) 係覆蓋譬如一驅動設備及一駕駿設備。一開口 22係設於 防護框架22後端與旁側框架1 8之間以提供操作人員7登 上或步下操作人員室12。用於支持操作人員7腰部之一腰 部支持件24係配置於防護框架22曲線部上方之內表面上 〇 一駕駛盤28係配置於一面板26上，且該面板係位於旁 側框架1 8上方部處。一操作桿32係配置於一前側面板30 上，且該前側面板係位於前側框架1 6之上方部處。一手 腕支持件34係自前側面板30突出以支持操作人員7之右 前臂及右手肘。 第2圖至第5圖係操作桿32之細部示圖。如第4圖所 示，操作桿32可包括以可旋轉式配置於前側框架1 6上的 一桿體36。桿體36係向上延伸通過形成於前側面板30上 的一溝槽38。溝槽38係沿本體框架之前向及後向延伸。 桿體36係選擇性地沿溝槽38向前與向後傾側。桿體36 之下方末端（未顯示）係連接至一第一電位計40( —第一偵 測設備）之一輸入軸，以偵測桿體36之傾斜角度及傾斜方 向。如第6圖之一槪略圖表所示，第一電位計40的一偵 測値將傳送至可爲一微電腦的一控制器42。控制器，42係 依據該偵測値來控制一驅動設備44，使得本體框架依據桿 體36之傾斜而運動。桿體36之傾斜方向係與基礎框架之 運動方向相同。一彈簧（未顯示）係配置於桿體36與第一 電位計4 0之輸入軸之間。當桿體3 6未使用時係藉該彈簧 510887 五、發明說明（6) 之力暈而扣持於大致鉛直的一中立位置中。 如第2圖至第4圖所示，操作桿3 2包括配置於桿體3 6 上方末端上的一手柄46。手柄46較佳地包括由合成樹脂 製成的兩分離手柄件46a、46b(參閱第3圖）。桿體36之 上方末端係配置於手柄件46a、46b之間。手柄件46a、 46b係藉螺桿及螺帽而互相緊固，且固定至桿體36。手柄 4 6係沿一軸L延伸成一棒狀外型，手柄4 6之外型係形成 爲由一手以手掌朝下地抓握著。操作人員7係由右手以手 掌朝下地抓握手柄46。操作人員7大部份由中指及小指來 抓握手柄4 6。因此’由中指及小指固持之手柄4 6 —*右側 部48在垂直於軸L的方向上具有窄小寬度。手柄46另一 末端之一左側部50具有寬闊的寬度。操作人員7係將食 指及中指放置於左側部50之上方表面上。一背側表面部 52係自手柄46基礎部、或與桿體36之接合部起大致鉛直 地延伸。操作人員7係將右手拇指底部（拇指底部之肉球） 放置於背側表面部52上。 操作人員7係將右前臂及右手肘放置於手腕支持件34 上且沿左側及右側方向放置右前臂。即，操作人員7係抓 握著手柄46，使得右前臂與沿基礎框架寬度方向延伸之一 水平X軸平行。因此，手柄46係配置於桿體36上，允許 操作人員7在某種程度上輕易地抓握手柄46。由右上方觀 察時，手柄46之軸L係相對於X軸反時鐘傾斜30至60 度的一角度α。基於一相似理由，當桿體36位於中立位 510887 五、發明說明（7) 置時，手柄46之軸L係相對於X軸鉛直地傾斜（參閱圖4) 〇 一大致圓柱形把手54係配置於手柄46左側末端上且環 繞著L旋轉，使得把手可藉由抓握該手柄之一手之拇指選 擇性地向上且向下移動把手5 4而旋轉該把手。把手5 4係 牢固地固定至作爲本具體實施例中一第二電位計58之一 第二偵測設備的輸入軸。第二電位計58係以譬如螺釘而 包含於手柄46中。更佳地，把手54係牢固地固定至減速 器（未顯示）之一輸入軸，藉譬如螺釘將該減速器輸入軸連 接至第二電位計58之輸入軸。一凸起件56係沿著軸L而 在把手54外圍表面上延伸。操作人員7可藉由正抓握著 手柄46之右手拇指向上或向下推壓凸起件56而得輕易地 轉動把手54。如第6圖之槪略圖表所示，連接至把手54 之第二電位計58係偵測把手54之旋轉方向及旋轉角度， 並且將偵測値傳送至控制器42。在較佳具體實施例中，控 制器42係依據由第二電位計58傳回之偵測値來控制連接 至一升降油壓缸60的一第二油壓控制閥62並且沿桅桿1 4 舉升或降下一叉架（未顯示）。是以，該叉架升降機之叉架 係依據把手54之旋轉而選擇性地舉升及下降。該凸起件 係依據該拇指之運動而運動，且該凸起件之運動方向係與 該叉架選擇性地舉升與下降之方向相同。當未使用把手54 時，把手54將藉由藏於該減速器中之一彈簧而扣持於一 中立位置中。「把手」一詞包括用於旋轉譬如一桿件等一 510887 五、發明說明（8) 軸的裝置。 在本具體實施例中可爲一交互轉換開關64的拉伸桅桿 用切換裝置係配置於手柄46之左側部50上。交互轉換開 關64(或拉伸開關）係配置於一適當位置處及一適當方向中 ，使操作人員7主要以右手食指操縱。交互轉換開關64 之其中一末端係朝向基礎框架前側且另一末端係朝向本體 框架後側。交互轉換開關64係控制桅桿之前向及後向運 動。交互轉換開關64係連接至控制器42。控制器42係依 據該交互轉換開關傳回之輸出信號來控制連接至一拉伸油 壓缸66的一第二油壓控制閥68。 一十字形按鈕70係位於手柄46背側表面部52上。十 字形按鈕70係配置於可由操作人員7以抓握手柄46之右 手拇指壓下的一位置處。十字形按鈕70包括一上方末端 部（第一末端部）70a、一下方末端部（第二末端部）70b、一 右側部（第三末端部）70c、及一左側部（第四末端部）70d。 十字形按鈕70之上方末端部70a及下方末端部70b係形 成用於控制桅桿1 4朝正向及反向方向傾斜的傾側切換裝 置。如第6圖所示，控制器42係當操作人員7壓下上方 末端部70a或下方末端部70b時，依據自十字形按鈕70 傳回之信號來控制傾側油壓缸72的一第三油壓控制閥74 。該叉架升降機之桅桿1 4係依據該傾側開關之動作而選 擇性地向前及向後傾側，且該傾側開關之動作方向係與桅 桿1 4之傾斜方向相同。 -10- 五、發明說明（9) 一側移附屬件（未顯示）係附加至叉架升降機1 〇且該側 移附屬件係操控負載用附屬件之一種選擇。該側移附屬件 包括配置於一舉升托架上、用於向左及右移動該叉架的一 側移油壓缸76。十字形按鈕70之右側部70c及左側部 7〇d係對應該側移附屬件。控制器42係當操作人員7壓下 右側部70c或左側部70d時，依據自十字形按鈕70傳回 之一信號來控制連接至側移油壓缸76的一第四油壓控制 閥78。 第3圖及第5圖中之一喇叭按鈕80係配置於手柄46左 側部5 0之前側表面上。喇叭按鈕8 0大部份由中指壓下。 以下將說明使用操作桿32來移動該叉架升降機及操控 一負載的動作。 操作人員7基本上係以第1圖中一點線所示之一姿勢站 立著。明確地，操作人員7係站立於操作人員室12中、 將腰部倚靠著防護框架20上之腰部支持件24、以左手抓 握駕駛盤28、且以右手抓握操作桿32之手柄46。在這種 狀態下，操作人員7係將右手肘及右手肘附近之右前臂倚 靠於設在前側面板3 0上的手腕支持件3 4上。這可將抓握 著手柄46的右手、及右前臂保持大致水平，因此得減少 右臂疲勞。更，由於身體係支持於兩位置處，亦即藉腰部 支持件24及手腕支持件34支持著，因此可使身體穩定。 亦，右臂之姿勢係與第7圖之先前技藝拉伸式叉架升降機 中使用的驅動姿勢相似。因此，即使操作人員7已習慣先 -11- 510887 五、發明說明（1〇 ) 前技藝之叉架升降機，然操作人員7仍可輕易地操縱具有 依據本較佳具體實施例之操作桿32的叉架升降機1 0。 當操作人員7以右手肘作爲一支點來向前移動右前臂時 ，桅桿32之桿體36及手柄46係向前傾側。此時，第一 電位計40係偵測桿體36之傾斜方向及傾斜角度且將偵測 値傳送至控制器42。結果，控制器將以相對應於操作桿 32傾斜角度之一速度來控制驅動設備44及推進叉架升降 機10。 當操作人員7向前傾側操作桿32時，右手可能滑落手 柄46。因此，如圖2至圖5所示，手柄46右側末端上較 佳地形成一凸緣82以防止手滑動。凸緣82係沿著與手柄 46之軸L交叉的一方向延伸。當操作人員7以右手肘爲一 支點向後移動右前臂時，桿體36將向後傾側。於是，叉 架升降機1 0將以相對應桿體36傾斜方向及傾斜角度的一 所需速度向後運動。 當抓握手柄4 6時，將傾側操作桿3 2、或執行移動該叉 架升降機之動作，且接著以拇指操縱把手54。譬如，當把 手54之凸起件56隨拇指向上運動時，控制器42將依據 第二電位計58之輸出信號來控制第一油壓控制閥62。藉 控制第一油壓控制閥62，使得液壓油供應至升降油壓缸 60。藉此，該叉架將舉升。另一方面，當把手54之凸起 件向下運動時，控制器42將切換第一油壓控制閥62之位 置。升降油壓缸6 0中之液壓油將返回至油槽8 4中。是以 -12- 五、發明說明（11) ，該叉架將降下。 當操作人員7以拇指施加把手5 4 —向上之力量時，該 叉架將舉升。當操作人員7以拇指施加把手54 —向下之 力量時，該叉架將降下。因此，把手54之運動方向係與 該叉架之實際運動方向相同。是以，操作人員7執行舉升 叉架之動作時不致感到不舒適。 當操作人員7抓握手柄46時將執行移動該叉架之動作 或舉升該叉架之動作，且連貫地以食指操縱拉伸該叉架用 之交互轉換開關64。當操作人員7壓下交互轉換開關64 之前側末端部時，控制器42將依據交互轉換開關64之輸 出信號來控制第二油壓控制閥68。於是，拉伸油壓缸66 之一活塞桿將延伸。結果，桅桿1 4將向後運動。因此， 切換動作與桅桿1 4之實際運動方向將相同。是以，操作 人員7可輕易地操縱該叉架升降機。 當壓下上方末端部70a時，桅桿1 4將向前傾側。當壓 下該下方末端部70b時，桅桿1 4將向後傾側。當壓下右 側部70c時，該叉架將向右運動。當壓下左側部70d時， 該叉架將向左運動。因此，操作人員7可使用十字形按鈕 70來執行傾側桅桿14之動作及該叉架側移之動作而不致 感到不舒適。當移動該叉架升降機或操控一負載時，操作 人員7將以中指壓下喇叭按鈕80以發出警告聲。 熟知此項技藝之人士應明白，本發明可具體實施於眾多 其他特殊型式中而不致脫離本發明之精神或範圍。明確地 -13- 510887 五、發明說明（12) ，應了解到，本發明可具體實施於以下型式中。 在可供一操作人員站立於其中之該叉架升降機中，通常 係連貫地執行移動該叉架升降機之動作、及舉升與降下該 叉架之動作。因此，可將該操作桿設計成僅具有該桿體傾 斜及該把手旋轉。可分離地提供爲了每一動作，即拉伸該 叉架之動作、傾斜該等桅桿之動作、及側移該叉架之動作 而設計的一操作桿。 在較佳具體實施例中，本發明之操作桿32係應用至可 供一操作人員站立於其中的叉架升降機。然而，操作桿32 可應用於配衡式叉架升降機。在此情況下，該叉架係依據 該把手之向上或向下旋轉而舉升或下降，且該等桅桿係依 據該桿體之前向或後向傾斜而傾側。 本發明之操作桿32係應用至其中之複數個桅桿及一叉 架爲整合於一體傾側的一叉架升降機，然而，操作桿32 亦可應用至僅一叉架傾側的一叉架升降機。 因此，本範例及具體實施例係視爲說明用而非限制用， 並且本發明並非以此中提供之詳細說明爲限，且可在隨附 申請專利範圍及其等義者內實施修飾。 元件符號對照表 1 駕駛盤 2 前側面板 3 舉升桿 4 傾側桿 -14- 510887 五、發明說明（13) 5 拉伸桿 6 驅動桿 7 操作人員 10 叉架升降機 12 操作人員室 14 桅桿 16 前側框架 18 旁側框架 20 防護 22 開口 24 腰部支持件 26 面板 28 駕駛盤 30 前側面板 32 操作桿 34 手腕支持件 36 桿體 38 溝槽 40 第一電位計 42 控制器 44 驅動設備 46 手柄 46 a 手柄件 -15- 510887 五、發明說明（14) 46b 手柄件 48 右側部 50 左側部 52 背側表面部 54 把手 56 凸起件 58 第二電位計 60 升降油壓缸 62 第一油壓控制閥 64 交互轉換開關 6 6 拉伸油壓缸 68 第二油壓控制閥 70 十字形按鈕 70a 上方末端部（第一末端部） 70b 下方末端部（第二末端部） 70c 右側部（第三末端部） 70d 左側部（第四未端部） 72 傾側油壓缸 74 第三油壓控制閥 76 側移油壓缸 78 第四油壓控制閥 80 喇叭按鈕 82 凸緣 84 油槽 -16-510887 V. Description of the invention (2) Tilt lever 4 and stretching lever 5, and simultaneously drive the driving lever 6 with the right forearm or right elbow. When the operator 7 needs to change the movement of the body frame from the forward direction to the backward direction while lifting or lowering the fork frame, the operator 7 needs to raise the right arm and grasp it again before pushing the driving rod 6 backward Grip member 3. This manipulation is complicated and inefficient. Moreover, when manipulating a load, the above-mentioned manipulating actions need to be performed frequently. Therefore, the operator 7 will be more and more tired. This operation disclosed in this early published patent application No. 10-236797 is a kind of operation 1 which can be used to move sideways, backward, left, and right. . When 'the lever is tilted forward or backward, the vehicle will move accordingly. When the lever is tilted to the left or right, a forklift will be raised or lowered accordingly. According to the above operating lever, the movement direction of the fork frame is different from that of the lever. Therefore, an operator will feel uncomfortable and it will take a long time for the operator to become proficient in the manipulation of the lever. SUMMARY OF THE INVENTION The object of the present invention is to provide an operating lever that facilitates the actions of controlling a load and moving a handle. To achieve the above object, the present invention provides an operating lever provided on a frame of a forklift body. The lever includes a lever body, a handle, and a handle. The rod system is arranged on the body frame and is tilted. The handle is arranged on the rod body. The handle profile is formed so that it can be grasped with one hand facing down. The handle is rotatably disposed on the handle. The handle is 510887. V. Description of the invention (3) The handle is rotated by selectively moving the handle up and down by holding a thumb of one of the handles. The present invention also provides a fork lift having an operator room in which an operator can stand. The fork lift includes a front side panel, a control lever, a first detection device, a second detection device, and a controller. The operation lever includes a lever body, a handle, and a handle. The rod system is arranged on the front side panel and can be selectively tilted forward and backward. The handle is arranged on the rod body. The handle profile is formed to be grasped by one hand with the palm facing down. The handle is rotatably disposed on the handle. The handle is rotated by grasping a thumb of the hand to move the handle up and down. The first detection device detects an inclination direction and an inclination angle of the rod body. The second detection device is located in the handle. The second detection device detects a rotation direction and a rotation angle of the handle. The controller controls the base frame to move in the same direction as the tilting direction of the rod according to the detection of the first detection device, and controls a fork frame along the same according to the detection of the second detection device. Raise and lower in the direction of the rotation direction of the handle. Other ideas and advantages of the present invention will become apparent from the following description which illustrates the principles of the present invention with reference to the accompanying drawings and examples. Brief description of the drawings The invention and its objects and advantages will be best understood by the following description of the preferred embodiments and the accompanying drawings. Fig. 1 is a partial perspective view showing a 510887 according to a first embodiment of the present invention. 5. Description of the invention (4) The operator stands on one of the stretch-type battery-powered forklift elevators. A perspective view showing the operating lever provided in the forklift of Fig. 1 is shown in Fig. 3. Fig. 3 is a plan view of the operating lever shown in Fig. 2. Fig. 4 is a view taken along line 4-4 in Fig. 3. Side view of the operating lever 9 Figure 5 shows the side view of the operating lever handle viewed along line 5-5 in Figure 4. Figure 6 shows the operating lever of the present invention for moving the forklift and controlling a load. A schematic diagram of a control system; and FIG. 7 is a partial perspective view showing a prior art stretch-type battery-powered forklift elevator. More detailed description of the embodiment A description will now be given with reference to FIGS. 1 to 6 of a stretched battery powered forklift lifter 10 according to a first specific embodiment of the present invention. Figure 1 shows a part of the operator's room 12 of the forklift elevator 10. An operator stands in the operator's room 12 of the forklift elevator 10 while operating the forklift elevator 10 to move and control a load. The direction in which the operator 7 looks from the operator's room 12 toward the mast 14 is called the 刖 direction. The operator room 1 2 is defined by a front side frame 16, a side frame 18 on the left side, and a protective frame 20 on the right side. A side frame 16 is provided on the front side of the main body frame. The controller covers, for example, a controller and a hydraulic control valve for controlling a load. Side frame -6- 18 510887 V. Description of the invention (5) Covers, for example, a driving device and a driving device. An opening 22 is provided between the rear end of the protective frame 22 and the side frame 18 to provide an operator 7 to climb on or off the operator's room 12. A lumbar support 24 for supporting one of the waists of the operator 7 is disposed on the inner surface above the curved portion of the protective frame 22. A steering wheel 28 is disposed on a panel 26, and the panel is positioned above the side frame 18 Everywhere. An operation lever 32 is disposed on a front side panel 30, and the front side panel is located at an upper portion of the front side frame 16. A wrist support 34 projects from the front side panel 30 to support the right forearm and right elbow of the operator 7. 2 to 5 are detailed views of the operating lever 32. As shown in Fig. 4, the operating lever 32 may include a lever body 36 rotatably disposed on the front side frame 16. The rod body 36 extends upwardly through a groove 38 formed in the front side panel 30. The groove 38 extends forward and backward along the body frame. The rod body 36 is selectively tilted forward and backward along the groove 38. The lower end (not shown) of the lever body 36 is connected to one of the input shafts of a first potentiometer 40 (the first detection device) to detect the tilt angle and the tilt direction of the lever body 36. As shown in the schematic diagram in FIG. 6, a detection signal of the first potentiometer 40 is transmitted to a controller 42 which may be a microcomputer. The controller 42 controls a driving device 44 according to the detection frame so that the main body frame moves according to the inclination of the lever body 36. The inclination direction of the lever body 36 is the same as the movement direction of the base frame. A spring (not shown) is disposed between the lever body 36 and the input shaft of the first potentiometer 40. When the rod body 36 is not in use, it is held in a neutral position by being substantially halted by the force of the spring 510887. 5. Description of the invention (6). As shown in FIGS. 2 to 4, the operating lever 32 includes a handle 46 disposed on the upper end of the lever body 3 6. The handle 46 preferably includes two separate handle members 46a, 46b made of synthetic resin (see Fig. 3). The upper end of the lever body 36 is disposed between the handle members 46a and 46b. The handle members 46 a and 46 b are fastened to each other by a screw and a nut, and are fixed to the rod body 36. The handle 4 6 extends along a shaft L to form a rod-like shape, and the handle 4 6 is formed by holding the palm 4 downward with one hand. The operator 7 grasps the handle 46 with the palm of his right hand down. Most of the operators 7 use the middle and little fingers to grasp the handle 4 6. Therefore, the handle 4 6 — * held by the middle finger and the little finger has a narrow width in the direction perpendicular to the axis L. The left side portion 50 of one of the other ends of the handle 46 has a wide width. The operator 7 places the index finger and the middle finger on the upper surface of the left side portion 50. A back-side surface portion 52 extends substantially vertically from the base portion of the handle 46 or the joint portion with the lever body 36. The operator 7 places the bottom of the right thumb (the meat ball at the bottom of the thumb) on the back surface portion 52. The operator 7 places the right forearm and the right elbow on the wrist support 34 and the right forearm in the left and right directions. That is, the operator 7 is holding the handle 46 so that the right forearm is parallel to one horizontal X axis extending in the width direction of the base frame. Therefore, the handle 46 is disposed on the lever body 36, allowing the operator 7 to easily grasp the handle 46 to some extent. When viewed from the upper right, the axis L of the handle 46 is an angle α of 30 to 60 degrees counterclockwise relative to the X axis. For a similar reason, when the lever body 36 is in the neutral position 510887 5. When the invention is described (7), the axis L of the handle 46 is vertically inclined with respect to the X axis (see FIG. 4). A generally cylindrical handle 54 is configured On the left end of the handle 46 and rotating around L, the handle can be rotated by selectively moving the handle 5 4 up and down by grasping a thumb of one of the handles. The handle 54 is firmly fixed to the input shaft of the second detection device which is one of the second potentiometers 58 in this embodiment. The second potentiometer 58 is included in the handle 46 by, for example, a screw. More preferably, the handle 54 is firmly fixed to one input shaft of a reducer (not shown), and the reducer input shaft is connected to the input shaft of the second potentiometer 58 by, for example, a screw. A projection 56 extends along the axis L on the peripheral surface of the handle 54. The operator 7 can easily turn the handle 54 by pushing the raised member 56 up or down with the thumb of the right hand holding the handle 46. As shown in the schematic diagram of FIG. 6, the second potentiometer 58 connected to the handle 54 detects the rotation direction and rotation angle of the handle 54, and transmits the detection frame to the controller 42. In a preferred embodiment, the controller 42 controls a second oil pressure control valve 62 connected to a lifting oil cylinder 60 based on the detection signal transmitted by the second potentiometer 58 and lifts the oil pressure along the mast 1 4 Raise or lower the fork (not shown). Therefore, the fork of the fork lift is selectively raised and lowered according to the rotation of the handle 54. The protrusion is moved according to the movement of the thumb, and the movement direction of the protrusion is the same as the direction in which the fork is selectively raised and lowered. When the handle 54 is not used, the handle 54 will be held in a neutral position by a spring hidden in the reducer. The term "handle" includes a device used to rotate a shaft, such as a lever. In the present embodiment, the switching device for the stretching mast, which can be an interactive changeover switch 64, is arranged on the left side portion 50 of the handle 46. The interactive switch 64 (or the stretch switch) is arranged at an appropriate position and in an appropriate direction, so that the operator 7 mainly operates with the right index finger. One end of the interactive change-over switch 64 faces the front side of the base frame and the other end faces the rear side of the main body frame. The interactive transfer switch 64 controls the forward and backward movement of the mast. The interactive transfer switch 64 is connected to the controller 42. The controller 42 controls a second hydraulic control valve 68 connected to a tension hydraulic cylinder 66 according to an output signal returned by the interactive switch. A cross-shaped button 70 is located on the back surface portion 52 of the handle 46. The zigzag button 70 is disposed at a position where the operator 7 can press down on the thumb of the right hand of the handle 46. The cross button 70 includes an upper end portion (first end portion) 70a, a lower end portion (second end portion) 70b, a right portion (third end portion) 70c, and a left portion (fourth end portion). 70d. The upper end portion 70a and the lower end portion 70b of the cross-shaped button 70 are formed as tilting switching devices for controlling the mast 14 to tilt in the forward and reverse directions. As shown in FIG. 6, when the operator 7 depresses the upper end portion 70 a or the lower end portion 70 b, the controller 42 controls a third oil of the tilting hydraulic cylinder 72 according to a signal returned from the cross button 70.压 控制 阀 74。 Pressure control valve 74. The mast 14 of the forklift is selectively tilted forwards and backwards according to the operation of the tilt switch, and the operation direction of the tilt switch is the same as the tilt direction of the mast 14. -10- V. Description of the invention (9) A side-moving attachment (not shown) is attached to the forklift elevator 10 and the side-moving attachment is an option for controlling load attachments. The side shift attachment includes a side shift hydraulic cylinder 76 arranged on a lifting bracket for moving the fork frame left and right. The right side portion 70c and the left side portion 70d of the cross-shaped button 70 correspond to the side shift attachment. The controller 42 controls a fourth hydraulic pressure control valve 78 connected to the side shift hydraulic cylinder 76 when the operator 7 depresses the right side portion 70c or the left side portion 70d according to a signal returned from the cross button 70. One of the horn buttons 80 in FIGS. 3 and 5 is disposed on the front surface of the left side portion 50 of the handle 46. The horn button 80 is mostly depressed by the middle finger. The operation of using the operating lever 32 to move the forklift elevator and control a load will be described below. The operator 7 is basically standing in one of the postures indicated by a one-dot line in the first figure. Specifically, the operator 7 stands in the operator's room 12, leans his waist against the waist support 24 on the protective frame 20, holds the steering wheel 28 with his left hand, and holds the handle 46 of the operating lever 32 with his right hand. In this state, the operator 7 leans the right elbow and the right forearm near the right elbow on the wrist support 34 provided on the front side panel 30. This keeps the right hand holding the handle 46 and the right forearm approximately horizontal, thereby reducing fatigue in the right arm. Furthermore, since the body system is supported at two positions, that is, supported by the waist support member 24 and the wrist support member 34, the body can be stabilized. Also, the posture of the right arm is similar to the driving posture used in the prior art stretch fork lift of FIG. 7. Therefore, even if the operator 7 is accustomed to the first-11- 510887. V. INTRODUCTION TO THE INVENTION (10) The forklift of the previous art, the operator 7 can still easily operate the Fork lift 10. When the operator 7 uses the right elbow as a point to move the right forearm forward, the rod body 36 and the handle 46 of the mast 32 lean forward. At this time, the first potentiometer 40 detects the inclination direction and the inclination angle of the rod body 36 and transmits the detection chirp to the controller 42. As a result, the controller will control the drive device 44 and the forklift lifter 10 at a speed corresponding to one of the tilt angles of the operating lever 32. When the operator 7 tilts the lever 32 forward, the right hand may slip off the handle 46. Therefore, as shown in Figs. 2 to 5, a flange 82 is preferably formed on the right end of the handle 46 to prevent the hand from sliding. The flange 82 extends in a direction crossing the axis L of the handle 46. When the operator 7 moves the right forearm backward with the right elbow as a fulcrum, the lever body 36 will tilt backward. Thus, the forklift elevator 10 will move backward at a desired speed corresponding to the tilt direction and tilt angle of the lever body 36. When gripping the handle 46, the operation lever 32 is tilted, or the movement of the forklift lifter is performed, and then the handle 54 is manipulated with the thumb. For example, when the raised member 56 of the handle 54 moves upward with the thumb, the controller 42 will control the first oil pressure control valve 62 according to the output signal of the second potentiometer 58. By controlling the first hydraulic pressure control valve 62, hydraulic oil is supplied to the lift hydraulic cylinder 60. This will lift the fork. On the other hand, when the projection of the handle 54 moves downward, the controller 42 will switch the position of the first hydraulic control valve 62. The hydraulic oil in the lifting cylinder 60 will return to the oil tank 84. Therefore, -12- 5. Invention Description (11), the fork will be lowered. When the operator 7 applies a thumb-up force with the thumb 5 4, the fork will be lifted. When the operator 7 applies a downward force to the handle 54 with his thumb, the fork is lowered. Therefore, the movement direction of the handle 54 is the same as the actual movement direction of the fork frame. Therefore, the operator 7 does not feel uncomfortable when performing the operation of lifting the fork. When the operator 7 grasps the handle 46, the operation of moving the fork frame or lifting the fork frame is performed, and the interactive changeover switch 64 for stretching the fork frame is continuously operated with the index finger. When the operator 7 depresses the front end of the interactive changeover switch 64, the controller 42 will control the second oil pressure control valve 68 based on the output signal of the interactive changeover switch 64. Then, one of the piston rods of the extension hydraulic cylinder 66 will be extended. As a result, the mast 14 will move backward. Therefore, the switching direction and the actual direction of movement of the mast 14 will be the same. Therefore, the operator 7 can easily operate the forklift. When the upper end portion 70a is depressed, the mast 14 will tilt forward. When the lower end portion 70b is depressed, the mast 14 is tilted backward. When the right side portion 70c is depressed, the fork will move to the right. When the left side portion 70d is depressed, the fork will move to the left. Therefore, the operator 7 can use the cross-shaped button 70 to perform the movement of the tilt mast 14 and the movement of the fork sideways without feeling uncomfortable. When the forklift is moved or a load is controlled, the operator 7 will depress the horn button 80 with a middle finger to issue a warning sound. Those skilled in the art should understand that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention. Explicitly -13- 510887 V. Description of the Invention (12) It should be understood that the present invention can be embodied in the following types. In the forklift in which an operator can stand, the actions of moving the forklift and the actions of lifting and lowering the forklift are generally performed consecutively. Therefore, the operating lever can be designed to have only the tilting of the lever body and the rotation of the handle. An operation lever is separately provided for each action, that is, the action of stretching the fork, the action of tilting the masts, and the action of moving the fork sideways. In a preferred embodiment, the operating lever 32 of the present invention is applied to a forklift in which an operator can stand. However, the operation lever 32 can be applied to a counterbalanced forklift. In this case, the fork is lifted or lowered according to the upward or downward rotation of the handle, and the masts are tilted according to the forward or backward tilt of the body. The operating lever 32 of the present invention is a forklift lift in which a plurality of masts and a fork rack are integrated in an integrated tilt. However, the operating lever 32 can also be applied to a fork lift in which only one fork is tilted. Therefore, this example and specific embodiment are to be regarded as illustrative rather than restrictive, and the present invention is not limited to the detailed description provided herein, and can be modified within the scope of the accompanying patent application and its equivalents. Component symbol comparison table 1 Steering wheel 2 Front side panel 3 Lifting lever 4 Tilt lever -14- 510887 V. Description of the invention (13) 5 Stretch rod 6 Drive rod 7 Operator 10 Fork lift 12 Operator room 14 Mast 16 Front side Frame 18 Side frame 20 Protection 22 Opening 24 Waist support 26 Panel 28 Steering wheel 30 Front panel 32 Operating lever 34 Wrist support 36 Rod body 38 Groove 40 First potentiometer 42 Controller 44 Drive device 46 Handle 46 a Handle -15- 510887 5. Description of the invention (14) 46b Handle piece 48 Right side 50 Left side 52 Back side surface 54 Handle 56 Protrusion 58 Second potentiometer 60 Lifting hydraulic cylinder 62 First hydraulic control valve 64 Interchange switch 6 6 Extension hydraulic cylinder 68 Second hydraulic control valve 70 Cross button 70a Upper end (first end) 70b Lower end (second end) 70c Right side (third end) 70d Left side (fourth end) 72 Tilt hydraulic cylinder 74 Third hydraulic control valve 76 Side shift hydraulic cylinder 78 Fourth hydraulic control valve 80 Horn button 82 flange 84 tank -16-