201037190 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種v型皮帶式無段變速機。 【先前技術】 :口’例如專利文獻丨(圖2〜圖5)所示，已有包括如下構 型㈣式無段變速機：支持於主_)之驅動帶輪 (7) ’支持_軸(5〇)之從”輪(52);架設於 輪⑼與從動帶輪(52)之間之V型皮帶(55);藉由使驅2 輪(47)之可動帶輪(可動半體49)朝可動帶輪(49)之細線方向 滑動而變更帶輪(47)之槽寬之槽寬可變機構；使讀槽寬可變 機構作動之驅動馬達(81);及將該驅動馬達(81)之動力傳達 至槽寬可變機構之動力傳達部。 [先前技術文獻] [專利文獻] [專利文獻1]曰本專利特開2⑻6-153〇57號公報 【發明内容】 (發明所欲解決之問題） 於上述習知之v型皮帶式無段變速機中，將驅動馬達(81) 之動力傳達至槽寬可變機構之動力傳達部係藉由減速齒輪 機構(82)及嫘旋式之滑塊機構(71)而構成。 因此，必須於動力傳達部設置複數個齒輪及其等之轴承構 件等，結果導致有動力傳達部大型化之問題。 099100068 4 201037190 本發明之目的在於解決上 達部小型化之ν型皮帶式無芦靖，而提供一種可使動力傳 (解決問題之手段） 迷機。 為達成上述目的，本發明之 支持於主轴之驅動帶輪；支持於型皮帶式無段變速機包括： 等驅動帶輪與從動帶輪之門之；4輛之彳足動帶輪；架設於該 帶輪及/或從動帶輪之可動帶型皮帶，·藉由使上述驅動 ο 動而變更帶輪之样宫阳朝該可動帶輪之軸線方向滑 曰見<償見可變 動之驅動單元；及將該驅動單_機構，使該槽寬可變機構作 機構之動力傳達部；其特徵在： 之動力傳達至上述槽寬可變 上述驅動單元包括與上述可動 軸，且使該輪屮冑帶輪之轴線呈平行之輸出 H亥輸出轴朝該輸出 達部與朝上汗〈早由綠万n進退’上述動力傳 Ο 帶輪之轴線平行之=二之輪出袖連動而朝與上述可動 帶輪之鼓部相卡=進退’且包括織間接地與該可動 卡&而使上述可動帶輪滑動之卡合部。 輪㈣式無段變㈣’驅料&⑽與可動帶 仃也進仃進退移動之輸出軸，藉由該進退移動， 可動帶輪經由朝與上述可動帶輪之轴線平行的方向進退之 動力，連部之卡合部而滑動，因此無須設㈣知技術之動力 傳達#中為必要之複數個齒輪及其等之軸承構件。 因此，根據該發明，可使動力傳達部小型化，其結果為可 使v型皮帶式無段變速機整體小型化。 099100068 5 201037190 較理想的是構成為，將 動帶，方向，在上述可動=部之卡合部就上述可 輪的帶輪輪之輪承部之間斑支持安裳有該可動帶 若以如此槎忐 、^軸承邛相鄰接而配置。 輪抽會作用有與該==，帶輪滑動時，即使對帶201037190 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a v-belt type stepless speed changer. [Prior Art]: As shown in the patent document 丨 (Fig. 2 to Fig. 5), the following configuration (four) type stepless speed changer is included: the drive pulley (7) supporting the main _) (5〇) from the "wheel (52); V-belt (55) mounted between the wheel (9) and the driven pulley (52); by the movable pulley of the drive 2 (47) (movable half Body 49) a groove width variable mechanism that slides in the direction of the thin line of the movable pulley (49) to change the groove width of the pulley (47); a drive motor (81) that activates the groove width variable mechanism; and the drive The power of the motor (81) is transmitted to the power transmission unit of the variable groove mechanism. [Prior Art] [Patent Document] [Patent Document 1] Japanese Patent Laid-Open No. Hei 2 (8) 6-153-57 (Invention) The problem to be solved is the transmission of the power of the drive motor (81) to the power transmission portion of the variable groove mechanism by the reduction gear mechanism (82) and the cymbal in the conventional v-belt type stepless transmission. The rotary type slider mechanism (71) is configured. Therefore, it is necessary to provide a plurality of gears and the like of the bearing members in the power transmission unit, and as a result, the power transmission unit is enlarged. The problem is 099100068 4 201037190 The object of the present invention is to solve the miniaturized ν-type belt type without the Lushang, and to provide a mechanism for power transmission (a means to solve the problem). To achieve the above object, the present invention is supported by Spindle drive pulley; support type belt type stepless speed changer includes: the door of the drive pulley and the driven pulley; the four foot pedals; the pulley and/or the driven belt a movable belt type belt of the wheel, which is changed by the movement of the pulley to change the direction of the pulley of the valve toward the axis of the movable pulley. See the variable drive unit; and the drive unit_ a mechanism for making the groove width variable mechanism a power transmission portion of the mechanism; wherein: the power is transmitted to the groove width, the driving unit includes the movable shaft, and the axis of the rim pulley is Parallel output H Hai output shaft toward the output up portion and upward sweat (early from the green Wan n forward and backward 'the above-mentioned power transmission pulley parallel to the axis = two wheels out of the sleeve and move toward the above movable pulley Drum phase card = advance and retreat 'and includes woven indirect And the movable card & the engaging portion for sliding the movable pulley. The wheel (four) type without the section (four) 'driver & (10) and the movable belt 仃 also enters the output shaft of the forward and backward movement, by the advance and retreat movement, The movable pulley is slid by the power that advances and retreats in a direction parallel to the axis of the movable pulley, and the engaging portion of the joint slides. Therefore, it is not necessary to provide (four) a plurality of gears necessary for the power transmission of the technology and the like. Therefore, according to the present invention, the power transmission unit can be downsized, and as a result, the entire V-belt type stepless speed changer can be miniaturized. 099100068 5 201037190 It is preferable to configure the moving belt, the direction, In the engaging portion of the movable portion, the plaque is supported between the wheel portions of the pulley of the above-mentioned wheel, and the movable belt is disposed so as to be adjacent to each other. The pumping action has the same as the ==, the pulley slides even if the belt is
彎曲，且可動帶輪可容易順暢二=…’帶輪轴亦W 右乂如此構成，則當卡合部使可動帶輪滑動時，難以 輪轴作用與該帶輪軸呈正交方向之力量，帶輪軸更不易= 曲’且可動帶輪容易更順暢地滑動。 。又’較理想的是構成為，上述動力傳達部包括與上述驅動 單兀之輸㈣連結之連結部，且錢結部錢結於上述 軸之前端面。 & 若以如此構成’則可消除或至少減少上述輸出軸前端周圍 之連結部朝上述V型皮帶方向的突出，而可防止連結部與V 型皮帶之干涉。 【實施方式】 以下，參照圖式說明本發明之V型皮帶式無段變速機之 實施形態。 圖1係表示作為使用本發明V型皮帶式無段變速機之— 實施形態之一例的速克達型二輪機車之側視圖，圖2係上述 099100068 6 201037190 二輪機車中包括v型皮帶式無段變速機之動力單元之側視 圖，圖3係省略圖2局部之ΠΙ-ΙΙΙ剖視圖。 如圖1所示，該二輪機車10為於車架11之後部，藉由樞 軸12與後避震器單元13而將動力單元20相對於車架11 可搖動自如地懸掛於枢軸12周圍之車輛。於前管llh可操 舵自如地安裝有前叉14，且於該前叉14之下端處安裝有前 輪15F。於前叉14之上部安裝有轉向把手15。 0 車架11於後部具有左右一對座架11s(僅圖示其中一者）。 於該座架11s上設置有供乘客跨坐之座部16，於該座部16 之下方設置有朝向上方開口之儲物箱17。於儲物箱17之後 方配置有燃料箱18。 動力單元20包括作為驅動源之引擎30、及設置於該引擎 30後方之變速箱40。變速箱40中内置有將引擎30之驅動 力傳達至後輪15R之V型皮帶式無段變速機50。動力單元 〇 20可搖動自如地安裝於車架11之後端部，且引擎30之動 力係經由變速箱40内之V型皮帶式無段變速機50而被傳 達至後輪15R。因此，動力單元20兼作後搖臂。 如圖3所示，引擎30主要包括曲柄軸箱31、氣缸體32、 氣缸頭33、以及氣缸頭蓋34。於曲柄軸箱31之前端結合有 指向大致水平方向之氣缸體32,於該氣缸體32之前端結合 有氣缸頭33，且於該氣缸頭33之前端結合有氣缸頭蓋34。 藉由曲柄軸箱31中所保持之滾珠轴承31b、31b而可旋轉 099100068 7 201037190 地支持曲柄軸31c ’於氣缸體32内可滑動地設置有活塞 32p。曲柄轴31c與活塞32p藉由連桿32c而連結，且曲柄 軸31c藉由活塞32p之往復移動而旋轉。曲柄軸構成下 述主轴51。於氣缸頭33連接有與燃燒室33c連通之進氣管 35(圖1)及排氣管36(圖1)。如圖2所示，於進氣管35連接 有燃料供給裝置35a及空氣淨化器35c。於拆氣裝置36連 接有消音器（未圖示）。 於圖3中’元件符號3〇p係、火星塞，元件符號施係設置 於氣缸頭蓋34内並由曲柄軸31c經由鏈條^而受旋轉驅動 之氣動閥用凸輪軸’元件符號31g係於曲柄輛箱蓋31e内具 有設置於曲柄軸31c周圍之定子與固定於曲柄軸3ic之轉子 的發電機。 如圖3所示，變速箱（亦僅稱作箱體)4〇為構成上述動力單 元20之-部分之。該箱體4〇包括右箱體術及與其 結合之左箱體40L。右箱體40R與上述曲柄軸箱3ι製成一 體。於右箱體40R之後部結合有構成使副輛 -w： ^ ^ ^ ^ <之方疋轉減速 '達至後輪轴55之齒輪箱（40G)的齒輪箱蓋4〇(：。 局部之V箭 圖4係圖3之局部放大圖，圖5係省略圖 視圖。 如圖3所不，V型皮帶式無段變速機50主要勹 於作為第1帶輪轴之主軸51的驅動帶輪6G =作 2帶輪歡-52的從鱗輪t及架餅吻駆^ 099100068 201037190 60與從動帶輪7〇 之間的v型皮帶53。 a 無段變逮機50包括 ，咳V型皮帶式 及V型皮帶53 <箱體40上述驅動帶輪6〇、從動帶輪70、 "槽寬可變機構8〇(圖’變更上述驅動帶輪 60之槽寬之 單元卯；及將該機構如作動之驅動 構80之動力傳建部丨⑻。 至上魂槽寬可變機 再者，槽寬可變機構8·^ ❹ 可構成為變更從動帶於7〇 得達部H)0等亦可） ^ ^ ,""之槽寬而非變更驅動帶輪60之槽 見，、 〆變更驅動帶輪60之槽寬及從動帶輪70之槽 寬。因此，本案中卷摇於「 田稱作帶輪軸」時，係指第1及/或第2 帶輪軸。 本實施形態之V型皮帶式無段變速％之特徵之一在於， 將驅動單元90及動力傳達部100配置於箱體40内。 以下，依序說明V型皮帶式無段變速機5G之構成。 ❹ 如圖3、圖4所示，於本實施形態中，主軸51如上述由 曲柄轴31c所構成。 主軸51包括：由作為軸承構件之轴承31b、31b以兩端支 持的大徑部51a ;及經由階差部51(1設置於該大徑部51a且 構成驅動帶輪60中之可動帶輪62之支持部的小徑部5lb。 如圖4所示，於本實施形態中，於驅動帶輪60設置有槽 寬可變機構80。· 驅動帶輪60包括：無法於主軸（帶輪轴)51之軸方向移動 099100068 9 201037190 之固定帶輪㈤定半體)61 ;及相對於主軸51而可在軸方向 移動2無料目對旋轉而絲的可動帶輪(可動半體)62。 、LI兄可I機構8G為用於如下機構：藉由使可動帶輪62 -幸51中可動帶輪62之支持部51b而朝向軸方向滑 動而變更讀60之槽寬、即變更固定帶輪61與可動帶輪 62之間隔。 覓可憂機構80包括：設為無法相對於帶輪轴51而相對 旋轉之扭矩傳達部UG ;及設置於可動帶輪幻且與扭矩傳 達部U〇之間進行扭矩傳達之轂部63。 圖6係表示扭矩傳達部削之主要部分之分解立體圖。 如圖4〜圖6所示，扭矩傳達部m包括：朝帶輪轴^ 之半徑方向延狀半财向縣⑴；及與該核方向部分 111成一體設置且朝轴線方向延伸之軸線方向部分丨12。軸 線方向部分112位於半徑方向上較可動帶輪62中與帶輪Η 之可動帶輪62之支持部5沁之對向面（本實施形態中為轂部 63之内周面）63a而更靠外側處。軸線方向部分ιΐ2設置有 複數個（本實施形態中於圓周方向上等間距設置有3個）。 扭矩傳達部U0亦可與主軸51成一體而形成，但本實施 形態中，挺矩傳達部110由與帶輪轴51分離之其他構件、(亦 將該構件稱作扭矩傳達構件)所構成。 扭矩傳達部U0之半徑方向部Alu之形狀如下：使圓板 狀部分111a於3個部位朝半徑方向呈輻射狀延設，且於該 099100068 10 201037190 延設部之前端分別-體地形成有軸線方向部分112。 於可動帶輪62之轂部63設置有與扭矩傳達部11〇之軸線 • 方向部分112之間進行扭矩傳達的扭矩傳達面64。該扭矩 傳達面64可輯於轴線方向部分112而朝車由線方向進行 對移動。 於可動帶輪62之轂部63設置有供扭矩傳達部11〇之軸線 方向部分112插人之孔65。該孔65橫剖面呈扇形，且與袖 〇線方向部分112之橫剖面相對應而大致吻合。該孔65圓周 方向之柒面形成為扭矩傳達面64。軸線方向部分ID於已 插入至轂部63之孔65中之狀態下，如上述位於半徑方向上 較轂部63之内周面63a更靠外側處。 於扭矩傳達部110之軸線方向部分112、與轂部63之扭 矩傳達面64之間，設置有合成樹脂製(例如於聚醯胺樹月旨(例 如A66)中犯合硬化材（例如碳）而成所需硬度之材料）之 〇 衝構件66。 後 緩衝構件6 6係安裝於扭矩傳達部110之轴線方向部分i J 2 則鈿卩内侧者，其具有與軸線方向部分112之前端部相符 合之形狀。_ 6所示之緩衝構件66為―體成型品，其包括 #曲狀之内周壁部66a、兩側壁部66b、66b、底壁部66c、 及於内周壁部66a朝向半徑方向外侧突出之突起66d。 於扭矩傳達部11G之軸線方向部分112設置有孔ii2d。 、缓衝構件66使内周壁部66a之突起66d嵌合至轴線方向 099100068 201037190 部分112之孔112d中，使内周壁部66a接合於軸線方向部 分112之前端部分内側，藉此安裝於軸線方向部分112之前 端部分。 軸線方向部分112於安裝有緩衝構件66之狀態下與緩衝 構件66 —併插入至轂部63之孔65中。於緩衝構件66已插 入至孔65之狀態下，緩衝構件66之側壁部66b之外側面 66bl構成與轂部63之扭矩傳達面64相抵接的扭矩傳達面。 緩衝構件66可與軸線方向部分112 —併於轂部63之孔 65内朝軸線方向滑動，但由於緩衝構件66之突起66d與轴 線方向部分112之孔112d相卡合，故即使軸線方向部分112 滑動，緩衝構件66亦不會自轴線方向部分112脫離。 再者，於圖6中表示出將缓衝構件66安裝於軸線方向部 分112之前端部内側之構成，但亦可構成為將緩衝構件66 安裝於軸線方向部分112之前端部外側。又，亦可構成為不 於轴線方向部分112安裝缓衝構件66，於該情形時，轴線 方向部分112之側面構成與轂部63之扭矩傳達面64相抵接 的扭矩傳達面。 於圖5、圖6中，元件符號67係圓筒構件。該圓筒構件 67插通於可動帶輪62之轂部63中且安裝於帶輪軸51之小 徑部51b。如圖4所示，於小徑部51b之前端安裝有雙螺帽 68，藉由該雙螺帽68，而於上述小徑部51b與主軸51之階 差部51d之間共同緊固有扭矩傳達構件110、圓筒構件67、 099100068 12 201037190 及固定帶輪61，使固定於小徑部5lb上。即，以圓筒構件 67之一端部67a、及上述階差部51d夾持半徑方向部分lu， 而將扭矩傳達構件110固定為無法相對於帶輪軸51進行旋 轉。又，以被圓筒構件67之另一端部67b、及雙螺帽邰夾 持固定帶輪6卜而將其固定為無法相對於帶輪袖51進行旋 轉。 可動帶輪62如上述藉由將扭矩傳達部11〇之袖線方向部 ❹分112插入至轂部63之孔65巾，安裝成相對於帶輪轴51 而無法旋轉但且可滑動。 如圖4、圖5所示，於可動帶輪62之毅部63外周，配置 有用於使該可動帶輪62滑動之卡合餐⑽。關於卡合構 件120’將與動力傳達部刚一併於下文詳細說明。 如圖4目5所不’驅動單元9〇包括：收容有作為驅動 源之馬達(伺服馬達)M(圖5)之馬達部Ml(圖句；及藉由馬達 〇 Μ之動力而作動之該驅動單元9〇之輸出轴^ ;該輸出轴 91與上述主轴51保持平行配置。再者，於藉由驅動單元卯 而文動從動V輪7G之槽寬之情形下，輸出轴91與副軸52 保持平行配置。 • 驅動單凡90包括將馬達Μ之動力傳達至輸出軸91之減 速w輪、.且92。於減速齒輪，組92之最末段齒輪，同心狀 地連接有滾珠螺桿(外螺紋)93。輸出軸91 t基部侧形成為 圓筒狀’且於其内面形成有滾珠螺桿（㈣紋)91b，該内螺 099100068 13 201037190 紋91b螺合於滾珠螺桿（外螺紋)93。因此，若藉由馬達μ之 驅動而經由減速齒輪組92使滚珠螺桿93旋轉，則輸出軸 91隨該旋轉方向朝其軸線方向（圖4中之箭頭XhX2方向） 進退移動。 藉由以螺釘95將收容有減速齒輪組92之齒輪箱94緊固 於箱體40内所設置之安裝部41(圖3)，而將驅動單元9〇固 定於箱體40内。於本實施形態中係構成為藉由侧蓋4〇LC 來覆蓋齒輪箱94(即驅動單元90)，而將驅動單元9〇收容於 箱體40内，其中該側蓋40LC以螺釘42可裝卸自如地安裝 於左箱體40L，形成左箱體4GL之—部分，但亦可構成為使 側蓋40LC與左箱體40L完全成一體化而將驅動單元9〇及 動力傳達部1〇〇收容於箱體40内。 如圖4所示，輸出軸91之前端91a朝向較驅動單元^ 之馬達部施更靠V型皮帶53側突出，且自與輸出轴9 呈正交之方向觀看下，該輸出轴91之至少—部分％触 置於上述v型皮帶之皮帶寬度w内。馬達部mi被 皮帶寬度W外。如圖2、圖5所示’自輸出軸91之輪、' 向觀看下，輸出軸91被配置於V型皮帶53之 ' ^ 53i中連接主軸51與副軸52的線L1上。如圖 跡户 、 如圖4所示， 速齒輪組92係配置於V型皮帶53之皮帶寬产w外广 如圖5所示，自輸出軸91之軸線方向觀看下 同日、 92與V型皮帶53保持重疊配置。 ’减速齒輪、自 099100068 14 201037190 如圖4、圖5所示’動力傳達部100係用於將驅動單元90 之動力傳達至上述槽寬可變機構80者，其包括上述卡合構 件120及連結構件130。卡合構件120與連結構件130藉由 螺釘131而結合。連結構件130藉由螺釘132而結合於輸出 轴91。因此，若輸出轴91進退移動，則卡合構件12〇及連 結構件130亦與該輸出軸91 一併進退移動。 如圖4所示，連結構件130中與輸出軸91之連結部133 〇 係連結於輸出轴91之前端面91e。 如圖5所示，卡合構件no包括間接地卡合於可動帶輪 62之轂部63而使可動帶輪62滑動之卡合部ι2ΐ。如圖4 所示於可動帶輪62之穀部63外周，固定有無法於轂部 63之軸線方向滑動之軸承69。於該軸承69之外周固定有同 樣無法於軸線方向滑動之卡合環122。於卡合環122之外周 設置有環狀之卡合槽123 ’且於該卡合槽123卡合有上述卡 〇合構件uo之卡合部12卜如此，圖示中係使卡合構件12〇 2卡合部121 地(經由卡合環122及抽承的)卡合於可動 帶輪62之較部63，但亦可使卡合部121直接地卡合於 63 ° -如圖4所示，卡合部121係就可動帶輪62之轴線方向上， ‘在可動帶輪62與支持絲有該可動帶輪62的帶輪軸51之 軸承。P 31b之間鄰接於該轴承部31b而配置。即，卡合部 121被配置為儘可能靠近轴承部31b。較理想的是，卡^ 099100068 201037190 121在隔著帶輪軸51而相對向之至少兩個部位處與可動帶 輪62之轂部63相卡合，於本實施形態中，卡合部121就帶 輪軸51(即就轂部63之旋轉中心）呈點對稱狀地於兩個部位 處保持卡合。 如圖3所示，V塑皮帶式無段變速50之作為從動軸的副 軸52可旋轉自如地支持於上述箱體40之左箱體40L及齒 輪箱蓋40C。於該副軸52經由離心式離合器54而設置有從 動帶輪70。 從動帶輪70包括固定帶輪（固定半體)71及可動帶輪(可動 半體)72。於上述驅動帶輪60與從動帶輪7〇架設有環狀v 型皮帶53’用於將驅動帶輪60之旋轉傳達至從動帶輪7〇。 若從動帶輪70之轉速超過既定轉速’則設置於從動帶輪7〇 與副軸52之間之離心式離合器54變成連接狀態，副轴& 開始旋轉。 使副軸52之旋轉減速並將其傳達至後輪軸55之齒輪組 (齒輪箱）40G包括：設置於副軸52之齒輪52g ;嚙合於該齒 輪52g之大徑齒輪141 ;直徑小於該大齒輪14ι且與大齒輪 141 一併旋轉之小齒輪142 ;及與該小齒輪142嚙合之大齒 輪143。大齒輪143係無法相對旋轉地安裝於後輪軸y。 因此，副轴52之旋轉經減速後傳達至後輪軸55，而驅動 安裝於後輪軸55上之後輪15R(圖1)。 從動帶輪70之可動帶輪72安裝為可相對於副軸52而於 099100068 16 201037190 ❹ 軸方向呈移動自如。可動帶輪72由螺旋彈簧73而被賦予朝 靠近固定帶輪71方向勢能’並根據作用於v型皮帶53之 張力，於軸方向上移動。即’若驅動帶輪60之可動帶輪62 朝槽寬縮小之方向位移’增大V型皮帶53對於驅動帶輪6〇 之捲繞直徑，則捲繞於從動帶輪70之V型皮帶53被拉向 驅動帶輪60側，作用於V型皮帶53之張力變大，藉由咳 張力之增大’從動帶輪70之可動帶輪72朝槽寬擴展之方向 位移，V型皮帶53對於從動帶輪70之捲繞直徑 又Ί，田丨J車由 52以高速旋轉。當驅動帶輪60之可動帶輪62朝槽寬擴展 之方向位移時’則進行相反之作動，副軸52以低速旋轉。 驅動單元90藉由未圖示控制部之控制而作動，於圖4 若輸出軸91朝箭頭XI方向突出且可動帶輪幻朝 滑動’則固定帶輪61與可動帶輪62之間隔擴大，v型皮二 〇 53對於驅動帶輪60之捲繞直控變小，同時v型皮儀$ 於從動帶輪70之捲繞直徑變大，後輪15R以低速受 對 驅動，以亦可承受高負載。相反，若輸出軸91朝箭頭 方向滑動且可動帶輪62朝X2方向滑動，則固定帶輪^ 可動帶輪62之間隔變窄，皮帶53對於驅動帶輪的與 捲繞直徑變大，同時V型皮帶53對於從動帶輪7〇 之 <捲繞 直徑變小，後輪15R以高速受到旋轉驅動。 根據如上所述之V型皮帶式無段變速機5〇，可獲得如下 之作用效果。 099100068 17 201037190 (a)驅動單元90包括與可動帶輪62之軸線平行之輸出軸 91，使該輸出軸91朝該輸出軸91之軸線方向進退，動力傳 達部100與朝軸線方向進退之輸出轴91連動而朝與可動帶 輪62之軸線相平行之方向進退4包括直接或間接與該可 動帶輪62《穀部63才目卡合而使可動帶輪&滑動之卡合部 121，因此可獲得如下之作用效果。即， 驅動單it 90包括與可鱗輪62之減平行地進行進退移 動之輸出軸91，藉由該進退移動，可動帶輪幻經由朝盘可 動帶輪62之軸線平行之方向進退的動力傳達部·之卡人 部121而滑動，因此錢設置習知技術之動力傳達部中所I、 要之複數個齒輪及其等之軸承構件。 二’可使動力傳達部100小型化，其結果為可使V型 皮帶式無段變速機50整體小型化。 (b)將動力傳達部 之卡合部121就可動帶輪62之輛 方向，在可動帶輪62與支持安裏有該可動帶輪62之砰 51之軸承部训之_該轴承部31b相鄰接而配置，: =部121使可動帶輪62滑動時，即便對於輸 :用與該帶，51呈正交方向之力量，帶輪轴51亦不易 且可動帶輪62可容易順暢地滑動。 (c)卡合部121於隔著帶輪軸 處斑可動，相對向之至少兩個部 處，、了動輪62之轂部63相卡合，因此當卡合部121估 動f輪62滑動時，難以制* 土人+ 對讀轴51作用與該帶輪軸呈正 099100068 201037190 方向之力量，帶輪轴51更不易彎曲，且可動帶輪62容易更 順暢地滑動。 (d)動力傳達部100包括與驅動單元90之輸出轴91連結 ' 之連結部133，該連結部133係連結於輸出軸91之前端面 91e，因此可消除或至少減少輸出軸91之前端周圍的連結部 133朝V型皮帶53方向之突出，可防止連結部133與V型 皮帶53之干涉。 0 以上，已說明本發明之實施形態，但本發明不受限於上述 實施形態，於本發明之主旨之範圍内可予以適當實施變形。 【圖式簡單說明】 圖1係表示作為使用本發明V型皮帶式無段變速機之一 實施形態之一例的速克達型二輪機車之側視圖。 圖2係上述二輪機車中包括V型皮帶式無段變速機之動 力單元之側視圖。 ❹ 圖3係省略圖2局部之III-III剖視圖。 圖4係圖3之局部放大圖。 圖5係省略圖3局部之V箭視圖。 圖6係表示扭矩傳達部110之主要部分之分解立體圖。 【主要元件符號說明】 10 二輪機車 11 車架 llh 前管 099100068 19 201037190 lls 12 13 14 15 15F 15R 16 17 18 20 30 30c 30p 31 31b 31c 31e 31g 32 32c 32p 座架 樞軸 後避震器單元 前叉 轉向把手 前輪 後輪 座部 儲物箱 燃料箱 動力單元 引擎 氣動閥用凸輪轴 火星塞 曲柄軸箱 軸承部 曲柄軸 曲柄軸箱蓋 發電機 氣缸體 連桿 活塞 099100068 20 201037190 33 33c 34 • 35 35a 35c 36 o 40Bending, and the movable pulley can be easily smoothed. The second pulley is also configured such that when the engaging portion slides the movable pulley, it is difficult for the axle to exert an orthogonal force with the pulley shaft. The pulley shaft is less likely to be curved = and the movable pulley is easier to slide more smoothly. . Further, it is preferable that the power transmission unit includes a connection portion that is coupled to the input (four) of the drive unit, and the money knot portion is attached to the front end surface of the shaft. & if so configured, the projection of the connecting portion around the front end of the output shaft in the direction of the V-belt can be eliminated or at least reduced, and the interference between the connecting portion and the V-belt can be prevented. [Embodiment] Hereinafter, an embodiment of a V-belt type stepless speed changer according to the present invention will be described with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view showing a scooter type two-turbine vehicle as an example of an embodiment using a V-belt type stepless speed changer according to the present invention, and Fig. 2 is a v-belt type without a section in the above-mentioned 099100068 6 201037190 two-wheeled vehicle. A side view of the power unit of the transmission, and FIG. 3 is a partial cross-sectional view of FIG. As shown in FIG. 1 , the second motor vehicle 10 is at the rear of the frame 11 , and the power unit 20 is swingably suspended around the pivot 12 relative to the frame 11 by the pivot 12 and the rear shock absorber unit 13 . vehicle. A front fork 14 is arbitrarily mounted to the front tube 11h, and a front wheel 15F is attached to the lower end of the front fork 14. A steering handle 15 is attached to the upper portion of the front fork 14. 0 The frame 11 has a pair of right and left mounts 11s (only one of which is shown) at the rear. A seat portion 16 for the passenger to straddle is provided on the seat frame 11s, and a storage box 17 that opens upward is provided below the seat portion 16. A fuel tank 18 is disposed behind the storage box 17. The power unit 20 includes an engine 30 as a drive source and a gearbox 40 disposed behind the engine 30. A V-belt type stepless speed changer 50 that transmits the driving force of the engine 30 to the rear wheel 15R is built in the transmission 40. The power unit 〇 20 is swingably attached to the rear end of the frame 11, and the power of the engine 30 is transmitted to the rear wheel 15R via the V-belt type stepless speed changer 50 in the transmission 40. Therefore, the power unit 20 doubles as a rear rocker arm. As shown in FIG. 3, the engine 30 mainly includes a crankcase 31, a cylinder block 32, a cylinder head 33, and a cylinder head cover 34. At the front end of the crankcase 31, a cylinder block 32 directed in a substantially horizontal direction is coupled, a cylinder head 33 is coupled to the front end of the cylinder block 32, and a cylinder head cover 34 is coupled to the front end of the cylinder head 33. The piston 32p is slidably provided in the cylinder block 32 by the ball bearing 31b, 31b held in the crankcase 31. The crankshaft 31c' is slidably provided in the cylinder block 32. The crankshaft 31c and the piston 32p are coupled by a link 32c, and the crankshaft 31c is rotated by the reciprocating movement of the piston 32p. The crankshaft constitutes the spindle 51 described below. An intake pipe 35 (Fig. 1) and an exhaust pipe 36 (Fig. 1) communicating with the combustion chamber 33c are connected to the cylinder head 33. As shown in Fig. 2, a fuel supply device 35a and an air cleaner 35c are connected to the intake pipe 35. A muffler (not shown) is connected to the degasser (36). In Fig. 3, the 'component symbol 3〇p system, the spark plug, and the component symbol are disposed in the cylinder head cover 34, and the camshaft' component symbol 31g of the pneumatic valve that is rotationally driven by the crankshaft 31c via the chain is attached to the crank. The box cover 31e has a stator provided around the crankshaft 31c and a generator fixed to the rotor of the crankshaft 3ic. As shown in Fig. 3, the gearbox (also referred to simply as a casing) 4'' is part of the above-described power unit 20. The casing 4 includes a right casing and a left casing 40L coupled thereto. The right case 40R is integrally formed with the above crank case 3ι. A gearbox cover 4 : (:. part) is formed in the rear portion of the right case 40R to constitute a gear box (40G) that causes the sub-car to be decelerated to the rear axle 55 (40G). Fig. 4 is a partial enlarged view of Fig. 3, and Fig. 5 is an omitted view. As shown in Fig. 3, the V-belt type stepless speed change machine 50 is mainly used as a driving belt of the main shaft 51 as the first pulley shaft. Wheel 6G = for the 2 pulleys - 52 from the scale wheel t and the cake cake 駆 ^ 099100068 201037190 60 and the driven belt pulley 7 〇 between the v-belt 53. a non-step change machine 50 includes, cough V Type belt type and V-belt 53 < housing 40 The above-mentioned drive pulley 6〇, driven pulley 70, "groove width variable mechanism 8〇 (Fig. 'Change the unit width of the drive pulley 60卯And the mechanism of the drive mechanism of the mechanism of the drive 80 (8). The supreme soul slot wide variable machine, the groove width variable mechanism 8·^ ❹ can be configured to change the follower belt to the 7 〇 达 达H) 0, etc.) ^ ^ , "" the groove width instead of changing the groove of the drive pulley 60, 〆 changing the groove width of the drive pulley 60 and the groove width of the driven pulley 70. Therefore, in the present case, when the volume is referred to as "the field is called a pulley shaft", it refers to the first and/or second pulley shaft. One of the features of the V-belt type stepless speed change % of the present embodiment is that the drive unit 90 and the power transmission unit 100 are disposed in the casing 40. Hereinafter, the configuration of the V-belt type stepless speed changer 5G will be described in order. As shown in Figs. 3 and 4, in the present embodiment, the main shaft 51 is constituted by the crank shaft 31c as described above. The main shaft 51 includes a large diameter portion 51a supported by both ends of the bearings 31b and 31b as bearing members, and a movable pulley 62 which is disposed in the large diameter portion 51a and which constitutes the driving pulley 60 via the step portion 51. The small diameter portion 5lb of the support portion. As shown in Fig. 4, in the present embodiment, the drive pulley 60 is provided with the groove width varying mechanism 80. The drive pulley 60 includes: the spindle (the pulley shaft) is not available. The axis of 51 is moved by 099100068 9 201037190. The fixed pulley (5) fixed half body 61; and the movable pulley (movable half body) 62 which can be moved in the axial direction with respect to the main shaft 51 without rotating the wire. The LI brother can be used as a mechanism for changing the groove width of the reading 60, that is, changing the fixed pulley, by sliding the support portion 51b of the movable pulley 62 in the movable pulley 62-fortunately 51 toward the axial direction. 61 is spaced from the movable pulley 62. The armor mechanism 80 includes a torque transmitting portion UG that is not rotatable relative to the pulley shaft 51, and a hub portion 63 that is disposed between the movable pulley and the torque transmitting portion U. Fig. 6 is an exploded perspective view showing the main part of the torque transmission portion. As shown in FIG. 4 to FIG. 6, the torque transmitting portion m includes a semi-finished county (1) extending in the radial direction of the pulley shaft ^; and an axial direction integrally provided with the nuclear direction portion 111 and extending in the axial direction. Part 丨12. The axial direction portion 112 is located more in the radial direction than the opposing surface of the movable portion of the movable pulley 62 with the support portion 5 of the movable pulley 62 of the pulley (in the present embodiment, the inner peripheral surface of the hub portion 63) 63a. Outside. A plurality of axial direction portions ι ΐ 2 are provided (three in the circumferential direction at equal intervals in the present embodiment). The torque transmitting portion U0 may be formed integrally with the main shaft 51. However, in the present embodiment, the stiffness transmitting portion 110 is constituted by another member separated from the pulley shaft 51 (this member is also referred to as a torque transmitting member). The radial direction portion Alu of the torque transmitting portion U0 has a shape in which the disk-shaped portion 111a is radially extended in three directions, and an axis is formed integrally at the front end of the 099100068 10 201037190 extension portion. Direction portion 112. The hub portion 63 of the movable pulley 62 is provided with a torque transmitting surface 64 for transmitting torque between the axis/direction portion 112 of the torque transmitting portion 11A. The torque transmitting surface 64 can be placed in the axial direction portion 112 to move in the direction of the vehicle from the line. The boss portion 63 of the movable pulley 62 is provided with a hole 65 through which the axial direction portion 112 of the torque transmitting portion 11 is inserted. The hole 65 has a sector shape in a cross section and substantially coincides with a cross section of the cuff line direction portion 112. The kneading surface in the circumferential direction of the hole 65 is formed as a torque transmitting surface 64. The axial direction portion ID is in the state of being inserted into the hole 65 of the hub portion 63 as described above in the radial direction from the inner peripheral surface 63a of the hub portion 63. A synthetic resin is provided between the axial direction portion 112 of the torque transmitting portion 110 and the torque transmitting surface 64 of the hub portion 63 (for example, a hardened material (for example, carbon) is used in the polyamide (for example, A66). The buffer member 66 is a material of the desired hardness. The rear cushioning member 66 is attached to the inner side of the axial direction portion i J 2 of the torque transmitting portion 110, and has a shape conforming to the front end portion of the axial direction portion 112. The cushioning member 66 shown in FIG. 6 is a body molded product, and includes a curved inner peripheral wall portion 66a, two side wall portions 66b and 66b, a bottom wall portion 66c, and a projection protruding toward the outer side in the radial direction of the inner peripheral wall portion 66a. 66d. A hole ii2d is provided in the axial direction portion 112 of the torque transmitting portion 11G. The cushioning member 66 fits the projection 66d of the inner peripheral wall portion 66a into the hole 112d of the portion 112 of the axial direction 099100068 201037190, and engages the inner peripheral wall portion 66a to the inner side of the front end portion of the axial direction portion 112, thereby being mounted in the axial direction. The front part of section 112. The axial direction portion 112 is inserted into the hole 65 of the hub portion 63 together with the cushioning member 66 in a state where the cushioning member 66 is attached. In a state where the cushioning member 66 has been inserted into the hole 65, the outer side surface 66b1 of the side wall portion 66b of the cushioning member 66 constitutes a torque transmitting surface that abuts against the torque transmitting surface 64 of the boss portion 63. The cushioning member 66 is slidable in the axial direction with the axial direction portion 112 and in the hole 65 of the hub portion 63, but since the projection 66d of the cushioning member 66 is engaged with the hole 112d of the axial direction portion 112, even the axial direction portion 112, the cushioning member 66 is also not disengaged from the axial direction portion 112. Further, Fig. 6 shows a configuration in which the cushioning member 66 is attached to the inner side of the end portion before the axial direction portion 112. However, the cushioning member 66 may be attached to the outer side of the end portion before the axial direction portion 112. Further, the cushion member 66 may be attached not to the axial direction portion 112. In this case, the side surface of the axial direction portion 112 constitutes a torque transmitting surface that abuts against the torque transmitting surface 64 of the hub portion 63. In Fig. 5 and Fig. 6, the reference numeral 67 is a cylindrical member. The cylindrical member 67 is inserted into the boss portion 63 of the movable pulley 62 and attached to the small diameter portion 51b of the pulley shaft 51. As shown in FIG. 4, a double nut 68 is attached to the front end of the small diameter portion 51b, and the torque is transmitted between the small diameter portion 51b and the step portion 51d of the main shaft 51 by the double nut 68. The member 110, the cylindrical member 67, the 099100068 12 201037190, and the fixed pulley 61 are fixed to the small diameter portion 51b. In other words, the end portion 67a of the cylindrical member 67 and the step portion 51d sandwich the radial direction portion lu, and the torque transmission member 110 is fixed so as not to be rotatable with respect to the pulley shaft 51. Further, the fixed pulley 6 is held by the other end portion 67b of the cylindrical member 67 and the double nut 固定 to fix it so as not to be rotatable with respect to the pulley sleeve 51. The movable pulley 62 is inserted into the hole 65 of the hub portion 63 by the arm portion direction portion 112 of the torque transmitting portion 11 as described above, and is attached so as not to be rotatable with respect to the pulley shaft 51 but slidable. As shown in Figs. 4 and 5, an engagement meal (10) for sliding the movable pulley 62 is disposed on the outer circumference of the rest portion 63 of the movable pulley 62. The engagement member 120' will be described in detail below together with the power transmission unit. As shown in FIG. 4, the drive unit 9 includes: a motor portion M1 in which a motor (servo motor) M (FIG. 5) as a drive source is housed (a picture; and the motor is activated by the power of the motor) The output shaft 91 of the driving unit 9 is disposed in parallel with the spindle 51. Further, in the case where the slot width of the driven V-wheel 7G is moved by the driving unit ,, the output shaft 91 and the pair are output. The shaft 52 is kept in parallel. • The drive unit 90 includes a reduction w-wheel that transmits the power of the motor to the output shaft 91, and 92. In the reduction gear, the last stage of the group 92, the ball screw is concentrically connected. (External thread) 93. The output shaft 91 t is formed in a cylindrical shape on the base side, and a ball screw ((four) pattern) 91b is formed on the inner surface thereof, and the inner screw 099100068 13 201037190 pattern 91b is screwed to the ball screw (external thread) 93 Therefore, when the ball screw 93 is rotated via the reduction gear train 92 by the driving of the motor μ, the output shaft 91 moves forward and backward in the direction of the axis (the direction of the arrow XhX2 in Fig. 4) with the rotation direction. 95 fastening the gear box 94 housing the reduction gear set 92 to the cabinet The mounting portion 41 (FIG. 3) provided in the 40, and the driving unit 9A is fixed in the casing 40. In the present embodiment, the gearbox 94 is covered by the side cover 4〇LC (ie, the driving unit) 90), the drive unit 9A is housed in the casing 40. The side cover 40LC is detachably attached to the left casing 40L by screws 42 to form a portion of the left casing 4GL, but may be configured to The side cover 40LC is completely integrated with the left case 40L, and the drive unit 9A and the power transmission unit 1 are housed in the case 40. As shown in Fig. 4, the front end 91a of the output shaft 91 faces the drive unit The motor portion is further protruded from the V-belt 53 side, and viewed from a direction orthogonal to the output shaft 9, at least a part of the output shaft 91 is in contact with the belt width w of the v-belt. The mi is outside the belt width W. As shown in Fig. 2 and Fig. 5, the output shaft 91 is disposed in the '^53i' of the V-belt 53 to connect the main shaft 51 and the counter shaft 52 as viewed from the direction of the output shaft 91. On the line L1, as shown in Fig. 4, the speed gear set 92 is disposed on the V-belt 53. The same position is observed from the axial direction of the output shaft 91, and the V-belt 53 is overlapped with the V-belt 53. 'Reduction gear, from 099100068 14 201037190 As shown in FIGS. 4 and 5, the power transmission unit 100 is used to drive the drive unit 90. The power is transmitted to the groove width varying mechanism 80, and includes the engaging member 120 and the connecting member 130. The engaging member 120 and the connecting member 130 are coupled by a screw 131. The connecting member 130 is coupled by a screw 132. Output shaft 91. Therefore, if the output shaft 91 moves forward and backward, the engaging member 12 and the connecting member 130 also move forward and backward together with the output shaft 91. As shown in Fig. 4, the connecting portion 133 of the connecting member 130 and the output shaft 91 are coupled to the front end surface 91e of the output shaft 91. As shown in Fig. 5, the engaging member no includes an engaging portion ι2 that indirectly engages with the boss portion 63 of the movable pulley 62 to slide the movable pulley 62. As shown in Fig. 4, on the outer circumference of the valley portion 63 of the movable pulley 62, a bearing 69 which cannot slide in the axial direction of the hub portion 63 is fixed. An engagement ring 122 that cannot slide in the axial direction is fixed to the outer periphery of the bearing 69. An annular engagement groove 123 ′ is provided on the outer circumference of the engagement ring 122 , and the engagement portion 12 of the card engagement member uo is engaged with the engagement groove 123. Thus, the engagement member 12 is shown in the figure. The 卡2 engaging portion 121 is engaged with the portion 63 of the movable pulley 62 (via the engaging ring 122 and the suction), but the engaging portion 121 can be directly engaged with the 63° - as shown in FIG. The engaging portion 121 is a bearing that is in the axial direction of the movable pulley 62 and that has a pulley shaft 51 of the movable pulley 62 on the movable pulley 62 and the support wire. P 31b is disposed adjacent to the bearing portion 31b. That is, the engaging portion 121 is disposed as close as possible to the bearing portion 31b. Preferably, the card ^ 099100068 201037190 121 is engaged with the hub portion 63 of the movable pulley 62 at at least two locations opposite to each other via the pulley shaft 51. In the present embodiment, the engaging portion 121 is brought The axle 51 (i.e., the center of rotation of the hub 63) is held in point symmetry at two locations. As shown in Fig. 3, the sub-shaft 52 as a driven shaft of the V-plastic belt type stepless speed change 50 is rotatably supported by the left case 40L and the gear case cover 40C of the case 40. The secondary pulley 52 is provided with a driven pulley 70 via a centrifugal clutch 54. The driven pulley 70 includes a fixed pulley (fixed half) 71 and a movable pulley (movable half) 72. An annular v-belt 53' is erected on the drive pulley 60 and the driven pulley 7 for transmitting the rotation of the drive pulley 60 to the driven pulley 7A. When the number of revolutions of the driven pulley 70 exceeds the predetermined number of revolutions', the centrifugal clutch 54 provided between the driven pulley 7A and the counter shaft 52 is brought into a connected state, and the counter shaft & The gear set (gearbox) 40G that decelerates the rotation of the countershaft 52 and transmits it to the rear axle 55 includes: a gear 52g disposed on the countershaft 52; a large diameter gear 141 meshing with the gear 52g; and a diameter smaller than the large gear a pinion gear 142 that rotates together with the large gear 141; and a large gear 143 that meshes with the pinion gear 142. The large gear 143 is attached to the rear wheel axle y so as not to be rotatable relative to each other. Therefore, the rotation of the counter shaft 52 is decelerated and transmitted to the rear wheel shaft 55, and is driven to be mounted on the rear wheel shaft 55 to the rear wheel 15R (Fig. 1). The movable pulley 72 of the driven pulley 70 is mounted to be movable in the ❹-axis direction with respect to the counter shaft 52 in the direction of 099100068 16 201037190. The movable pulley 72 is biased toward the fixed pulley 71 by the coil spring 73 and moves in the axial direction in accordance with the tension acting on the v-belt 53. That is, if the movable pulley 62 of the drive pulley 60 is displaced in the direction in which the groove width is reduced, the V-belt wound around the driven pulley 70 is increased by increasing the winding diameter of the V-belt 53 with respect to the drive pulley 6 53 is pulled toward the side of the drive pulley 60, and the tension acting on the V-belt 53 becomes large, and by the increase in cough tension, the movable pulley 72 of the driven pulley 70 is displaced in the direction in which the groove width is expanded, the V-belt. 53. For the winding diameter of the driven pulley 70, the 丨J car is rotated by 52 at a high speed. When the movable pulley 62 of the drive pulley 60 is displaced in the direction in which the groove width is expanded, the opposite operation is performed, and the counter shaft 52 is rotated at a low speed. The drive unit 90 is actuated by the control of the control unit (not shown). When the output shaft 91 protrudes in the direction of the arrow XI and the movable pulley slides slid in FIG. 4, the distance between the fixed pulley 61 and the movable pulley 62 is enlarged. The type of skin 〇 53 is smaller for the winding control of the drive pulley 60, and the winding diameter of the v-type dermatometer is increased at the driven pulley 70, and the rear wheel 15R is driven at a low speed to withstand High load. On the contrary, if the output shaft 91 slides in the direction of the arrow and the movable pulley 62 slides in the X2 direction, the interval between the fixed pulley and the movable pulley 62 becomes narrow, and the diameter of the belt 53 with respect to the drive pulley becomes large, and at the same time V The belt 53 is smaller in diameter with respect to the driven pulley 7 and the rear wheel 15R is rotationally driven at a high speed. According to the V-belt type stepless speed changer 5〇 as described above, the following effects can be obtained. 099100068 17 201037190 (a) The drive unit 90 includes an output shaft 91 parallel to the axis of the movable pulley 62, and the output shaft 91 is advanced and retracted toward the axis of the output shaft 91, and the power transmitting portion 100 and the output shaft that advances and retreats in the axial direction The advancement and retreat 4 in the direction parallel to the axis of the movable pulley 62 in conjunction with the interlocking movement includes the engaging portion 121 that directly or indirectly engages with the movable pulley 62 "the valley portion 63 to slide the movable pulley & The following effects can be obtained. That is, the driving unit it 90 includes an output shaft 91 that moves forward and backward in parallel with the subtraction of the scale wheel 62. With this advance and retreat movement, the movable belt wheel oscillates via the power parallel to the axis of the disk movable pulley 62. Since the card person unit 121 slides, the money is provided with a plurality of gears and other bearing members of the power transmission unit of the prior art. Second, the power transmission unit 100 can be downsized, and as a result, the entire V-belt type stepless speed changer 50 can be downsized. (b) The engaging portion 121 of the power transmitting portion is in the direction of the movable pulley 62, and the movable pulley 62 is supported by the bearing portion of the crucible 51 supporting the movable pulley 62. The bearing portion 31b is Arranged adjacent to each other: When the movable portion pulley 121 slides the movable pulley 62, even if the belt is 51 in the direction of the belt, the pulley shaft 51 is not easy and the movable pulley 62 can be easily and smoothly slid. . (c) the engaging portion 121 is movable at a position across the pulley shaft, and the hub portion 63 of the moving wheel 62 is engaged with respect to at least two portions thereof. Therefore, when the engaging portion 121 estimates the sliding of the f wheel 62 It is difficult to make * The native + the pair of read shafts 51 and the pulley shaft have a positive 099100068 201037190 direction of force, the pulley shaft 51 is less likely to bend, and the movable pulley 62 can easily slide more smoothly. (d) The power transmission unit 100 includes a coupling portion 133 that is coupled to the output shaft 91 of the drive unit 90. The coupling portion 133 is coupled to the front end surface 91e of the output shaft 91, thereby eliminating or at least reducing the periphery of the front end of the output shaft 91. The connecting portion 133 protrudes in the direction of the V-belt 53 to prevent interference between the connecting portion 133 and the V-belt 53. The embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and modifications may be appropriately made within the scope of the gist of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view showing a scooter type two-turbine vehicle as an example of an embodiment of a V-belt type stepless speed changer according to the present invention. Fig. 2 is a side view of the power unit including the V-belt type stepless speed changer in the above two-wheeled vehicle. 3 is a cross-sectional view of a portion III-III of FIG. 2 omitted. Figure 4 is a partial enlarged view of Figure 3. Fig. 5 is a view showing a partial V arrow of Fig. 3 omitted. FIG. 6 is an exploded perspective view showing a main part of the torque transmitting unit 110. [Main component symbol description] 10 Two-wheeled vehicle 11 frame llh Front tube 099100068 19 201037190 lls 12 13 14 15 15F 15R 16 17 18 20 30 30c 30p 31 31b 31c 31e 31g 32 32c 32p Frame pivot rear shock absorber unit front Fork Steering Handle Front Wheel Rear Wheel Seat Storage Box Fuel Tank Power Unit Engine Pneumatic Valve Camshaft Mars Plug Crankshaft Bearing Section Crankshaft Crankshaft Box Cover Generator Cylinder Block Connecting Rod Piston 099100068 20 201037190 33 33c 34 • 35 35a 35c 36 o 40
40C 40G、9440C 40G, 94
40L40L
40LC40LC
40R 41 Q 42 、 95 、 131 、 132 50 51 51a 51b 51d * 52 52g 氣缸頭 燃燒室 氣缸頭蓋 進氣管 燃料供給裝置 空氣淨化器 排氣裝置 變速箱 齒輪箱蓋 齒輪箱 左箱體 側蓋 右箱體 安裝部 螺釘 V型皮帶式無段變速機 主軸 大徑部 支持部（小徑部） 階差部 副軸 齒輪 099100068 21 201037190 53 V型皮帶 53i 旋轉軌跡内 54 離心式離合器 55 後輪軸 60 驅動帶輪 61、71 固定帶輪 62 ' 72 可動帶輪 63 轂部 63a 對向面 64 扭矩傳達面 65 、 112d 子L 66 緩衝構件 66a 内周壁部 66b 兩側壁部 66bl 外側面 66c 底壁部 66d 突起 67 圓筒構件 67a 圓筒構件67之一端部 67b 圓筒構件67之另一端部 68 雙螺帽 69 軸承 099100068 22 20103719040R 41 Q 42 , 95 , 131 , 132 50 51 51a 51b 51d * 52 52g cylinder head combustion chamber cylinder head cover intake pipe fuel supply device air purifier exhaust gearbox gearbox cover gearbox left case side cover right case Body mounting part screw V-belt type stepless speed changer main shaft large diameter part support part (small diameter part) Step part auxiliary shaft gear 099100068 21 201037190 53 V type belt 53i Rotary path 54 Centrifugal clutch 55 Rear axle 60 Drive belt Wheel 61, 71 Fixing pulley 62' 72 Movable pulley 63 Hub 63a Opposite surface 64 Torque transmitting surface 65, 112d Sub-L 66 Cushioning member 66a Inner peripheral wall portion 66b Two side wall portions 66bl Outer side 66c Bottom wall portion 66d Protrusion 67 Cylinder member 67a One end portion 67b of the cylindrical member 67 The other end portion 68 of the cylindrical member 67 Double nut 69 Bearing 099100068 22 201037190
70 從動帶輪 73 螺旋彈簀 80 槽寬可變機構 90 驅動單元 91 輸出轴 91a 前端面 91b 滾珠螺桿（内螺紋） 91c 輸出轴91之至少一部分 91e 前端面 92 減速齒輪組 92e 最末段之齒輪 93 滾珠螺桿（外螺紋） 100 動力傳達部 110 扭矩傳達部 111 半徑方向部分 111a 圓板狀部分 112 轴線方向部分 120 卡合構件 121 卡合部 122 卡合環 123 卡合槽 130 連結構件 099100068 23 201037190 133 連結部 141 大徑之齒輪 142 小齒輪 143 大齒輪 c 鏈條 LI 線 M 馬達 Ml 馬達部 W 皮帶寬度 XI ' X2 箭頭 099100068 2470 Drive pulley 73 Spiral magazine 80 Groove width variable mechanism 90 Drive unit 91 Output shaft 91a Front end face 91b Ball screw (internal thread) 91c Output shaft 91 at least a part 91e Front end face 92 Reduction gear set 92e Last stage Gear 93 Ball screw (external thread) 100 Power transmission unit 110 Torque transmitting portion 111 Radial direction portion 111a Disk portion 112 Axis direction portion 120 Engagement member 121 Engagement portion 122 Engagement ring 123 Engagement groove 130 Connection member 099100068 23 201037190 133 Connecting part 141 Large diameter gear 142 Pinion 143 Large gear c Chain LI line M Motor Ml Motor part W Belt width XI ' X2 Arrow 099100068 24