TWI435009B - V-belt continuously variable transmission - Google Patents
V-belt continuously variable transmission Download PDFInfo
- Publication number
- TWI435009B TWI435009B TW99100067A TW99100067A TWI435009B TW I435009 B TWI435009 B TW I435009B TW 99100067 A TW99100067 A TW 99100067A TW 99100067 A TW99100067 A TW 99100067A TW I435009 B TWI435009 B TW I435009B
- Authority
- TW
- Taiwan
- Prior art keywords
- belt
- shaft
- pulley
- output shaft
- drive unit
- Prior art date
Links
Landscapes
- Transmissions By Endless Flexible Members (AREA)
Description
本發明係關於一種V型皮帶式無段變速機。The present invention relates to a V-belt type stepless speed changer.
習知，例如專利文獻1(圖2)所示，已有包括如下構件之V型皮帶式無段變速機：支持於主軸(1)之驅動帶輪(3)；支持於副軸(2)之從動帶輪(4)；架設於該等驅動帶輪(3)與從動帶輪(4)之間之V型皮帶(5)；收容上述驅動帶輪(3)、從動帶輪(4)及V型皮帶(5)之箱體(100、101)；變更上述驅動帶輪(3)之槽寬之槽寬可變機構(8)；使該槽寬可變機構(8)作動之驅動單元(500)；及將該驅動單元(500)之動力傳達至上述槽寬可變機構(8)之動力傳達部(12等)。Conventionally, for example, as shown in Patent Document 1 (Fig. 2), there is a V-belt type stepless speed changer including the following members: a drive pulley (3) supported by the main shaft (1); and a counter shaft (2) a driven pulley (4); a V-belt (5) mounted between the driving pulley (3) and the driven pulley (4); and the driving pulley (3) and the driven pulley (4) and the case (100, 101) of the V-belt (5); the groove width variable mechanism (8) for changing the groove width of the drive pulley (3); the groove width variable mechanism (8) The driving unit (500) is activated; and the power of the driving unit (500) is transmitted to the power transmitting unit (12, etc.) of the groove width variable mechanism (8).
[專利文獻1]日本專利特開2006-022929號公報[Patent Document 1] Japanese Patent Laid-Open Publication No. 2006-022929
於上述習知之V型皮帶式無段變速機中，使槽寬可變機構(8)作動之驅動單元(500)係配置於箱體(100、101)之外部。In the above-described V-belt type stepless speed changer, the drive unit (500) in which the groove width variable mechanism (8) is actuated is disposed outside the casing (100, 101).
因此，難以藉由箱體(100、101)及驅動單元(500)覆蓋配置於驅動單元(500)之輸出部(齒輪11D等(專利文獻1之圖4))與槽寬可變機構(8)之間的動力傳達部(12等)，而較難確保密封性、特別是驅動單元(500)與動力傳達部(12等)之間之密封性。Therefore, it is difficult to cover the output portion (the gear 11D or the like (Fig. 4 of Patent Document 1)) and the groove width variable mechanism (8) disposed in the drive unit (500) by the case (100, 101) and the drive unit (500). In the power transmission portion (12, etc.) between them, it is difficult to ensure the sealing property, particularly the sealing between the driving unit (500) and the power transmitting portion (12, etc.).
本發明之目的在於解決上述問題，而提供一種容易確保密封性、特別是槽寬可變機構之與驅動單元及動力傳達部之間之密封性的V型皮帶式無段變速機。An object of the present invention is to solve the above problems, and to provide a V-belt type stepless speed changer which is easy to ensure sealing property, particularly a sealability between a groove width adjusting mechanism and a drive unit and a power transmission portion.
為達成上述目的，本發明之V型皮帶式無段變速機包括：支持於主軸之驅動帶輪；支持於副軸之從動帶輪；架設於該等驅動帶輪與從動帶輪之間之V型皮帶；收容上述驅動帶輪、從動帶輪及V型皮帶之箱體；變更上述驅動帶輪及/或從動帶輪之槽寬之槽寬可變機構；使該槽寬可變機構作動之驅動單元；及將該驅動單元之動力傳達至上述槽寬可變機構之動力傳達部；其特徵在於，上述驅動單元及動力傳達部被配置於上述箱體內連結上述主軸與副軸之線上。In order to achieve the above object, the V-belt type stepless speed changer of the present invention comprises: a drive pulley supported on the main shaft; a driven pulley supported on the countershaft; and is disposed between the drive pulley and the driven pulley a V-belt; a casing for accommodating the driving pulley, the driven pulley and the V-belt; and a groove width variable mechanism for changing a groove width of the driving pulley and/or the driven pulley; a driving unit that operates the variable mechanism; and a power transmitting unit that transmits the power of the driving unit to the groove width variable mechanism; wherein the driving unit and the power transmitting unit are disposed in the casing to connect the main shaft and the counter shaft On the line.
根據該V型皮帶式無段變速機，使槽寬可變機構作動之驅動單元、與將該驅動單元之動力傳達至上述槽寬可變機構之動力傳達部被配置於收容上述驅動帶輪、從動帶輪、及V型皮帶之箱體內，因此可容易確保密封性並使箱體小型化。特別是由於槽寬可變機構之驅動單元及動力傳達部整體處於由上述箱體所覆蓋之狀態，因此可容易確保驅動單元與動力傳達部之間之密封性。進而，藉由將驅動單元及動力傳達部配置於主軸與副軸之間，可抑制箱體之突出，而實現箱體之小型化。According to the V-belt type stepless speed changer, the drive unit that operates the groove width variable mechanism and the power transmission unit that transmits the power of the drive unit to the groove width variable mechanism are disposed in the drive pulley, Since the driven pulley and the V-belt are inside the casing, it is easy to ensure the sealing property and to miniaturize the casing. In particular, since the drive unit and the power transmission unit of the groove width variable mechanism are entirely covered by the casing, the sealing property between the drive unit and the power transmission unit can be easily ensured. Further, by arranging the drive unit and the power transmission unit between the main shaft and the counter shaft, it is possible to suppress the protrusion of the casing and to reduce the size of the casing.
較理想的是構成為，上述驅動單元包括收容有作為驅動源之馬達之馬達部、及藉由上述馬達之動力而作動的該驅動單元之輸出軸，而該輸出軸與上述主軸或副軸保持平行配置。Preferably, the driving unit includes a motor portion that houses a motor as a driving source, and an output shaft of the driving unit that is actuated by the power of the motor, and the output shaft is held by the spindle or the counter shaft Parallel configuration.
若以如此構成，則易於使驅動單元與主軸或副軸靠近，故可使將驅動單元之動力傳達至上述槽寬可變機構之動力傳達部小型化。其結果為，可實現V型皮帶式無段變速機之小型化。According to this configuration, it is easy to bring the drive unit closer to the main shaft or the counter shaft, so that the power transmission unit that transmits the power of the drive unit to the groove width variable mechanism can be downsized. As a result, the V-belt type stepless speed changer can be miniaturized.
更理想的是構成為，使上述輸出軸之前端朝向較上述馬達部更靠上述V型皮帶側突出，自與該輸出軸正交之方向觀看下，該輸出軸之至少一部分被配置於上述V型皮帶之皮帶寬度內，同時上述馬達部被配置於皮帶寬度外，而自上述輸出軸之軸線方向觀看下，該輸出軸則被配置於V型皮帶之旋轉軌跡內連結上述主軸與副軸之線上。More preferably, the front end of the output shaft protrudes toward the V-belt side from the motor portion, and at least a part of the output shaft is disposed in the V as viewed from a direction orthogonal to the output shaft. In the belt width of the belt, the motor portion is disposed outside the belt width, and viewed from the axial direction of the output shaft, the output shaft is disposed in the rotation locus of the V-belt to connect the main shaft and the counter shaft. on-line.
若以此方式構成，進而可獲得如下之效果。即，使驅動單元之輸出軸前端朝向較上述馬達部更靠上述V型皮帶側突出，且自與該輸出軸正交之方向觀看下，該輸出軸之至少一部分被配置於上述V型皮帶之皮帶寬度內，藉此可將驅動單元朝上述主軸方向之突出量中可減去與皮帶寬度與輸出軸之重疊部分相當量，而可使V型皮帶無段變速機小型化。而且，由於驅動單元之馬達部被配置於皮帶寬度外，故可確實防止V型皮帶與馬達部之干涉，同時自輸出軸之軸線方向觀看下，該輸出軸係被配置於V型皮帶之旋轉軌跡內連結主軸與副軸之線上，故亦可防止當V型皮帶彎曲時V型皮帶與輸出軸之干涉。According to this configuration, the following effects can be obtained. That is, the front end of the output shaft of the drive unit is protruded toward the V-belt side from the motor portion, and at least a part of the output shaft is disposed on the V-belt when viewed from a direction orthogonal to the output shaft. Within the width of the belt, the amount of protrusion of the drive unit toward the main axis can be reduced by the amount corresponding to the overlap of the belt width and the output shaft, and the V-belt stepless transmission can be miniaturized. Further, since the motor portion of the drive unit is disposed outside the belt width, it is possible to surely prevent the V-belt from interfering with the motor portion, and the output shaft is disposed in the V-belt rotation as viewed from the axial direction of the output shaft. The line connecting the main shaft and the counter shaft in the track prevents the V-belt from interfering with the output shaft when the V-belt is bent.
更理想的是構成為，上述驅動單元包括將上述馬達之動力傳達至上述輸出軸之減速齒輪組，該減速齒輪組配置於上述V型皮帶之皮帶寬度外，同時自上述輸出軸之軸線方向觀看下，上述減速齒輪組與上述V型皮帶相重疊。More preferably, the driving unit includes a reduction gear set that transmits power of the motor to the output shaft, and the reduction gear set is disposed outside a belt width of the V-belt while viewed from an axial direction of the output shaft. Next, the reduction gear set overlaps with the V-belt.
若以如此構成，即使在驅動單元包括減速齒輪組之情況下，亦可防止減速齒輪組部與V型皮帶之干涉，同時自輸出軸之軸線方向觀看下，因減速齒輪組與V型皮帶相重疊，故可使V型皮帶無段變速機小型化。According to this configuration, even in the case where the driving unit includes the reduction gear set, the interference between the reduction gear group portion and the V-belt can be prevented, and at the same time, viewed from the axial direction of the output shaft, the reduction gear set and the V-belt phase The overlap makes it possible to miniaturize the V-belt stepless speed changer.
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。Hereinafter, an embodiment of a V-belt type stepless speed changer according to the present invention will be described with reference to the drawings.
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，圖3係省略圖2之局部之III-III剖視圖。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side elevational 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, and Fig. 2 is a V-belt type stepless speed changer including the above-mentioned two-wheeled vehicle. A side view of the power unit, and FIG. 3 is a cross-sectional view of a portion III-III of FIG.
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樞軸12周圍之車輛。於前管11h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。As shown in FIG. 1 , the two-wheeled 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 rotatably 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.
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。The frame 11 has a pair of left and right 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.
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中內置有將引擎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20可搖動自如地安裝於車架11之後端部，且引擎30之動力經由變速箱40內之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。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 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.
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。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. A cylinder block 32 directed in a substantially horizontal direction is coupled to the front end of the crankcase 31, 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.
藉由曲柄軸箱31中所保持之滾珠軸承31b、31b而可旋轉地支持曲柄軸31c，於氣缸體32內可滑動地設置有活塞32p。曲柄軸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31c構成下述主軸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。於排氣裝置36連接有消音器(未圖示)。The crankshaft 31c is rotatably supported by the ball bearings 31b and 31b held in the crankcase 31, and the piston 32p 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 crank shaft 31c constitutes the following main shaft 51. An intake pipe 35 (FIG. 1) and an exhaust pipe 36 (FIG. 1) that communicate 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 exhaust unit 36.
於圖3中，元件符號30p係火星塞，元件符號30c係設置於氣缸頭蓋34內並由曲柄軸31c經由鏈條c而受旋轉驅動之氣動閥用凸輪軸，元件符號31g係於曲柄軸箱蓋31e內具有設置於曲柄軸31c周圍之定子與固定於曲柄軸31c之轉子的發電機。In Fig. 3, the component symbol 30p is a spark plug, and the component symbol 30c is a camshaft for a pneumatic valve which is disposed in the cylinder head cover 34 and is rotationally driven by the crankshaft 31c via the chain c. The component symbol 31g is attached to the crankcase cover. The 31e has a stator provided around the crankshaft 31c and a generator fixed to the rotor of the crankshaft 31c.
如圖3所示，變速箱(亦僅稱作箱體)40為構成上述動力單元20之一部分之箱體。該箱體40包括右箱體40R及與其結合之左箱體40L。右箱體40R與上述曲柄軸箱31製成一體。於右箱體40R之後部結合有構成使副軸52之旋轉減速並將其傳達至後輪軸55之齒輪箱(40G)的齒輪箱蓋40C。As shown in FIG. 3, the gearbox (also referred to simply as the case) 40 is a case that forms part of the power unit 20. The case 40 includes a right case 40R and a left case 40L coupled therewith. The right case 40R is integrally formed with the crank case 31 described above. A gear case cover 40C constituting a gear case (40G) that decelerates the rotation of the sub-shaft 52 and transmits it to the rear wheel shaft 55 is coupled to the rear portion of the right casing 40R.
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。4 is a partial enlarged view of FIG. 3, and FIG. 5 is a view showing a partial V arrow of FIG.
如圖3所示，V型皮帶式無段變速機50主要包括：支持於作為第1帶輪軸之主軸51的驅動帶輪60；支持於作為第2帶輪軸之副軸52的從動帶輪70；及架設於該等驅動帶輪60與從動帶輪70之間的V型皮帶53。又，該V型皮帶式無段變速機50包括：收納上述驅動帶輪60、從動帶輪70、及V型皮帶53之箱體40；變更上述驅動帶輪60之槽寬之槽寬可變機構80(圖4)；使該槽寬可變機構80作動之驅動單元90；及將該驅動單元90之動力傳達至上述槽寬可變機構80之動力傳達部100。As shown in FIG. 3, the V-belt type stepless speed change machine 50 mainly includes a drive pulley 60 supported by a main shaft 51 as a first pulley shaft, and a driven pulley supported as a counter shaft 52 of the second pulley shaft. 70; and a V-belt 53 mounted between the drive pulley 60 and the driven pulley 70. Further, the V-belt type stepless speed changer 50 includes a casing 40 that houses the drive pulley 60, the driven pulley 70, and the V-belt 53; and the groove width of the groove width of the drive pulley 60 can be changed. The variable mechanism 80 (FIG. 4); the drive unit 90 that activates the groove width variable mechanism 80; and the power of the drive unit 90 is transmitted to the power transmission unit 100 of the groove width variable mechanism 80.
再者，槽寬可變機構80(故而上述動力傳達部100等亦可)可構成為變更從動帶輪70之槽寬而非變更驅動帶輪60之槽寬，亦可構成為變更驅動帶輪60之槽寬及從動帶輪70之槽寬。因此，本案中當稱作「帶輪軸」時，係指第1及/或第2帶輪軸。Further, the groove width variable mechanism 80 (the power transmission unit 100 or the like may be omitted) may be configured to change the groove width of the driven pulley 70 instead of changing the groove width of the drive pulley 60, or may be configured to change the drive belt. The groove width of the wheel 60 and the groove width of the driven pulley 70. Therefore, in the present case, the term "belt axle" means the first and/or second pulley shaft.
本實施形態之V型皮帶式無段變速機50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內。One of the features of the V-belt type stepless speed changer 50 of the present embodiment is that the drive unit 90 and the power transmission unit 100 are disposed in the casing 40.
以下，依序說明V型皮帶式無段變速機50之構成。Hereinafter, the configuration of the V-belt type stepless speed change machine 50 will be described in order.
如圖3、圖4所示，於本實施形態中，主軸51如上述由曲柄軸31c所構成。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.
主軸51包括：由作為軸承構件之軸承31b、31b以兩端支持的大徑部51a；及經由階差部51d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51b。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 provided in the large diameter portion 51a via the step portion 51d and constituting the driving pulley 60. The small diameter portion 51b of the portion.
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。As shown in Fig. 4, in the present embodiment, a groove width varying mechanism 80 is provided in the drive pulley 60.
驅動帶輪60包括：無法於主軸(帶輪軸)51之軸方向移動之固定帶輪(固定半體)61；及相對於主軸51而可在軸方向移動但無法相對旋轉而安裝的可動帶輪(可動半體)62。The drive pulley 60 includes a fixed pulley (fixed half) 61 that is not movable in the axial direction of the main shaft (the pulley shaft) 51, and a movable pulley that is movable in the axial direction with respect to the main shaft 51 but cannot be relatively rotated. (movable half) 62.
槽寬可變機構80為用於如下機構：藉由使可動帶輪62沿帶輪軸51中可動帶輪62之支持部51b朝向軸方向滑動，而變更帶輪60之槽寬、即變更固定帶輪61與可動帶輪62之間隔。The groove width varying mechanism 80 is a mechanism for changing the groove width of the pulley 60, that is, changing the fixing band, by sliding the movable pulley 62 in the axial direction along the support portion 51b of the movable pulley 62 in the pulley shaft 51. The wheel 61 is spaced from the movable pulley 62.
槽寬可變機構80包括：設為無法相對於帶輪軸51而相對旋轉之扭矩傳達部110；及設置於可動帶輪62且與扭矩傳達部110之間進行扭矩傳達之轂部63。The groove width varying mechanism 80 includes a torque transmitting portion 110 that is relatively rotatable relative to the pulley shaft 51, and a hub portion 63 that is provided to the movable pulley 62 and that transmits torque between the torque transmitting portion 110.
圖6係表示扭矩傳達部110之主要部分之分解立體圖。FIG. 6 is an exploded perspective view showing a main part of the torque transmitting unit 110.
如圖4～圖6所示，扭矩傳達部110包括：朝帶輪軸51之半徑方向延伸之半徑方向部分111；及與該半徑方向部分111成一體設置且朝軸線方向延伸之軸線方向部分112。軸線方向部分112位於半徑方向上較可動帶輪62中與帶輪51之可動帶輪62之支持部51b之對向面(本實施形態中為轂部63之內周面)63a而更靠外側處。軸線方向部分112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)。As shown in FIGS. 4 to 6, the torque transmitting portion 110 includes a radial direction portion 111 extending in the radial direction of the pulley shaft 51, and an axial direction portion 112 integrally provided with the radial direction portion 111 and extending in the axial direction. The axial direction portion 112 is located further in the radial direction than the opposing surface of the movable portion of the movable pulley 62 with the support portion 51b of the movable pulley 62 of the pulley 51 (in the present embodiment, the inner peripheral surface of the hub portion 63) 63a. At the office. A plurality of axial direction portions 112 are provided (three in the circumferential direction at equal intervals in the present embodiment).
扭矩傳達部110亦可與主軸51成一體而形成，但本實施形態中，扭矩傳達部110由與帶輪軸51分離之其他構件(亦將該構件稱作扭矩傳達構件)所構成。The torque transmitting portion 110 may be formed integrally with the main shaft 51. However, in the present embodiment, the torque transmitting portion 110 is constituted by another member (also referred to as a torque transmitting member) that is separated from the pulley shaft 51.
扭矩傳達部110之半徑方向部分111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，且於該延設部之前端分別一體地形成有軸線方向部分112。The radial direction portion 111 of the torque transmitting portion 110 has a shape in which the disk-shaped portion 111a is radially extended in three directions, and the axial direction portion 112 is integrally formed at the front end of the extended portion.
於可動帶輪62之轂部63設置有與扭矩傳達部110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可相對於軸線方向部分112而朝軸線方向進行相對移動。The hub portion 63 of the movable pulley 62 is provided with a torque transmitting surface 64 that transmits torque between the axial direction portion 112 of the torque transmitting portion 110. The torque transmitting surface 64 is relatively movable in the axial direction with respect to the axial direction portion 112.
於可動帶輪62之轂部63設置有供扭矩傳達部110之軸線方向部分112***之孔65。該孔65橫剖面呈扇形，且與軸線方向部分112之橫剖面相對應而大致吻合。該孔65圓周方向之端面形成為扭矩傳達面64。軸線方向部分112於已***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之內周面63a更靠外側處。A hole 65 into which the axial direction portion 112 of the torque transmitting portion 110 is inserted is provided in the boss portion 63 of the movable pulley 62. The hole 65 has a sector shape in a cross section and substantially coincides with a cross section of the axial direction portion 112. The end surface of the hole 65 in the circumferential direction is formed as a torque transmitting surface 64. The axial direction portion 112 is located outside the inner peripheral surface 63a of the hub portion 63 in the radial direction in a state where it has been inserted into the hole 65 of the boss portion 63.
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(例如於聚醯胺樹脂(例如PA66)中混合硬化材(例如碳)而成所需硬度之材料)之緩衝構件66。Between the axial direction portion 112 of the torque transmitting portion 110 and the torque transmitting surface 64 of the hub portion 63, a synthetic resin (for example, a polyacetamide resin (for example, PA66) is mixed with a hardened material (for example, carbon). A cushioning member 66 of a material requiring hardness.
緩衝構件66係安裝於扭矩傳達部110之軸線方向部分112之前端部內側者，其具有與軸線方向部分112之前端部相符合之形狀。圖6所示之緩衝構件66為一體成型品，其包括彎曲狀之內周壁部66a、兩側壁部66b、66b、底壁部66c、及於內周壁部66a朝向半徑方向外側突出之突起66d。The cushioning member 66 is attached to the inner side of the front end portion of the axial direction portion 112 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 an integrally molded product including a curved inner peripheral wall portion 66a, two side wall portions 66b and 66b, a bottom wall portion 66c, and a projection 66d that protrudes outward in the radial direction from the inner peripheral wall portion 66a.
於扭矩傳達部110之軸線方向部分112設置有孔112d。A hole 112d is provided in the axial direction portion 112 of the torque transmitting portion 110.
緩衝構件66使內周壁部66a之突起66d嵌合至軸線方向部分112之孔112d中，使內周壁部66a接合於軸線方向部分112之前端部分內側，藉此安裝於軸線方向部分112之前端部分。The cushioning member 66 fits the projection 66d of the inner peripheral wall portion 66a into the hole 112d of the axial direction portion 112, and the inner peripheral wall portion 66a is engaged to the inner side of the front end portion of the axial direction portion 112, thereby being attached to the front end portion of the axial direction portion 112. .
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66一併***至轂部63之孔65中。於緩衝構件66已***至孔65之狀態下，緩衝構件66之側壁部66b之外側面66b1構成與轂部63之扭矩傳達面64相抵接的扭矩傳達面。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.
緩衝構件66可與軸線方向部分112一併於轂部63之孔65內朝軸線方向滑動，但由於緩衝構件66之突起66d與軸線方向部分112之孔112d相卡合，故即使軸線方向部分112滑動，緩衝構件66亦不會自軸線方向部分112脫離。The cushioning member 66 is slidable in the axial direction together with the axial direction portion 112 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 sliding member 66 is also not detached from the axial direction portion 112.
再者，於圖6中表示出將緩衝構件66安裝於軸線方向部分112之前端部內側之構成，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，亦可構成為不於軸線方向部分112安裝緩衝構件66，於該情形時，軸線方向部分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。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.
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、及固定帶輪61，使固定於小徑部51b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111，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，以圓筒構件67之另一端部67b、及雙螺帽68夾持固定帶輪61，而將其固定為無法相對於帶輪軸51進行旋轉。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, and the fixed pulley 61 are fixed to the small diameter portion 51b. In other words, the radial direction portion 111 is sandwiched between one end portion 67a of the cylindrical member 67 and the step portion 51d, 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 61 is sandwiched between the other end portion 67b of the cylindrical member 67 and the double nut 68, and is fixed so as not to be rotatable with respect to the pulley shaft 51.
可動帶輪62如上述藉由將扭矩傳達部110之軸線方向部分112***至轂部63之孔65中，安裝成相對於帶輪軸51而無法旋轉但且可滑動。The movable pulley 62 is inserted into the hole 65 of the hub portion 63 as described above, and is attached so as not to be rotatable relative to the pulley shaft 51 but slidable.
如圖4、圖5所示，於可動帶輪62之轂部63外周，配置有用於使該可動帶輪62滑動之卡合構件120。關於卡合構件120，將與動力傳達部100一併於下文詳細說明。As shown in FIGS. 4 and 5, an engaging member 120 for sliding the movable sheave 62 is disposed on the outer circumference of the boss portion 63 of the movable sheave 62. The engaging member 120 will be described in detail below together with the power transmitting unit 100.
如圖4、圖5所示，驅動單元90包括：收容有作為驅動源之馬達(伺服馬達)M(圖5)之馬達部M1(圖4)；及藉由馬達M之動力而作動之該驅動單元90之輸出軸91；該輸出軸91與上述主軸51保持平行配置。再者，於藉由驅動單元90而變動從動帶輪70之槽寬之情形下，輸出軸91與副軸52保持平行配置。As shown in FIGS. 4 and 5, the drive unit 90 includes a motor portion M1 (FIG. 4) in which a motor (servo motor) M (FIG. 5) as a drive source is housed; and the motor M is actuated by the power of the motor M. An output shaft 91 of the drive unit 90; the output shaft 91 is disposed in parallel with the spindle 51. Further, in the case where the groove width of the driven pulley 70 is varied by the drive unit 90, the output shaft 91 and the counter shaft 52 are arranged in parallel.
驅動單元90包括將馬達M之動力傳達至輸出軸91之減速齒輪組92。於減速齒輪組92之最末段齒輪92e，同心狀地連接有滾珠螺桿(外螺紋)93。輸出軸91之基部側形成為圓筒狀，且於其內面形成有滾珠螺桿(內螺紋)91b，該內螺紋91b螺合於滾珠螺桿(外螺紋)93。因此，若藉由馬達M之驅動而經由減速齒輪組92使滾珠螺桿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X1、X2方向)進退移動。The drive unit 90 includes a reduction gear set 92 that communicates the power of the motor M to the output shaft 91. A ball screw (external thread) 93 is concentrically connected to the last stage gear 92e of the reduction gear set 92. The base side of the output shaft 91 is formed in a cylindrical shape, and a ball screw (internal thread) 91b is formed on the inner surface thereof, and the internal thread 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 M, the output shaft 91 moves forward and backward in the axial direction (the directions of the arrows X1 and X2 in Fig. 4) in accordance with the rotation direction.
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內所設置之安裝部41(圖3)，而將驅動單元90固定於箱體40內。於本實施形態中係構成為藉由側蓋40LC來覆蓋齒輪箱94(即驅動單元90)，而將驅動單元90收容於箱體40內，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40L之一部分，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90及動力傳達部100收容於箱體40內。The drive unit 90 is fixed in the casing 40 by fastening the gear case 94 in which the reduction gear set 92 is housed by the screw 95 to the attachment portion 41 (FIG. 3) provided in the casing 40. In the present embodiment, the gear case 94 (ie, the drive unit 90) is covered by the side cover 40LC, and the drive unit 90 is housed in the case 40. The side cover 40LC is detachably mounted by screws 42. Although the left case 40L is formed in one part of the left case 40L, the side cover 40LC and the left case 40L may be completely integrated, and the drive unit 90 and the power transmission unit 100 may be housed in the case 40.
如圖4所示，輸出軸91之前端91a朝向較驅動單元90之馬達部M1更靠V型皮帶53側突出，且自與輸出軸91呈正交之方向觀看下，該輸出軸91之至少一部分91c被配置於上述V型皮帶之皮帶寬度W內。馬達部M1被配置於皮帶寬度W外。如圖2、圖5所示，自輸出軸91之軸線方向觀看下，輸出軸91被配置於V型皮帶53之旋轉軌跡內53i中連接主軸51與副軸52的線L1上。如圖4所示，減速齒輪組92係配置於V型皮帶53之皮帶寬度W外，同時如圖5所示，自輸出軸91之軸線方向觀看下，減速齒輪組92與V型皮帶53保持重疊配置。As shown in FIG. 4, the front end 91a of the output shaft 91 protrudes toward the V-belt 53 side toward the motor portion M1 of the drive unit 90, and at least the output shaft 91 is viewed from a direction orthogonal to the output shaft 91. A portion 91c is disposed within the belt width W of the V-belt. The motor portion M1 is disposed outside the belt width W. As shown in FIGS. 2 and 5, the output shaft 91 is disposed on the line L1 connecting the main shaft 51 and the counter shaft 52 in the rotation locus 53i of the V-belt 53 as viewed in the axial direction of the output shaft 91. As shown in FIG. 4, the reduction gear set 92 is disposed outside the belt width W of the V-belt 53, and as shown in FIG. 5, the reduction gear set 92 and the V-belt 53 are held as viewed from the axial direction of the output shaft 91. Overlapping configuration.
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而結合於輸出軸91。因此，若輸出軸91進退移動，則卡合構件120及連結構件130亦與該輸出軸91一併進退移動。As shown in FIGS. 4 and 5 , the power transmission unit 100 is configured to transmit the power of the drive unit 90 to the groove width variable mechanism 80 , and includes the engagement member 120 and the connection member 130 . The engaging member 120 and the connecting member 130 are coupled by a screw 131. The joint member 130 is coupled to the output shaft 91 by a screw 132. Therefore, when the output shaft 91 moves forward and backward, the engaging member 120 and the connecting member 130 also move forward and backward together with the output shaft 91.
如圖4所示，連結構件130中與輸出軸91連結之連結部133係連結於輸出軸91之前端面91e。As shown in FIG. 4, the connection part 133 of the connection member 130 connected to the output shaft 91 is connected to the front end surface 91e of the output shaft 91.
如圖5所示，卡合構件120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121。如圖4所示，於可動帶輪62之轂部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卡合有上述卡合構件120之卡合部121。如此，圖示中係使卡合構件120之卡合部121間接地(經由卡合環122及軸承69)卡合於可動帶輪62之轂部63，但亦可使卡合部121直接地卡合於轂部63。As shown in FIG. 5, the engaging member 120 includes an engaging portion 121 that indirectly engages with the boss portion 63 of the movable pulley 62 to slide the movable pulley 62. As shown in FIG. 4, a bearing 69 that cannot slide in the axial direction of the hub portion 63 is fixed to the outer circumference of the boss portion 63 of the movable pulley 62. 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 formed on the outer circumference of the engagement ring 122, and the engagement portion 121 of the engagement member 120 is engaged with the engagement groove 123. As described above, in the drawing, the engaging portion 121 of the engaging member 120 is indirectly engaged (via the engaging ring 122 and the bearing 69) to the boss portion 63 of the movable pulley 62, but the engaging portion 121 may be directly Engaged in the hub portion 63.
如圖4所示，卡合部121係就可動帶輪62之軸線方向，在可動帶輪62與支持安裝有該可動帶輪62的帶輪軸51之軸承部31b之間鄰接於該軸承部31b而配置。即，卡合部121被配置為儘可能靠近軸承部31b。較理想的是，卡合部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。As shown in FIG. 4, the engaging portion 121 is adjacent to the bearing portion 31b between the movable pulley 62 and the bearing portion 31b that supports the pulley shaft 51 to which the movable pulley 62 is attached, in the axial direction of the movable pulley 62. And configuration. That is, the engaging portion 121 is disposed as close as possible to the bearing portion 31b. Preferably, the engaging portion 121 is engaged with the boss portion 63 of the movable pulley 62 at at least two portions facing each other with the pulley shaft 51 interposed therebetween. In the present embodiment, the engaging portion 121 is coupled to the axle portion. 51 (that is, the center of rotation of the hub portion 63) is held in a point symmetrical manner at two locations.
如圖3所示，V型皮帶式無段變速機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。As shown in FIG. 3, the sub-shaft 52 as a driven shaft of the V-belt type stepless speed changer 50 is rotatably supported by the left case 40L and the gear case cover 40C of the case 40. The counter pulley 52 is provided with a driven pulley 70 via a centrifugal clutch 54.
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70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70。若從動帶輪70之轉速超過既定轉速，則設置於從動帶輪70與副軸52之間之離心式離合器54變成連接狀態，副軸52開始旋轉。The driven pulley 70 includes a fixed pulley (fixed half) 71 and a movable pulley (movable half) 72. An annular V-belt 53 is provided on the drive pulley 60 and the driven pulley 70 for transmitting the rotation of the drive pulley 60 to the driven pulley 70. 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 70 and the counter shaft 52 is brought into a connected state, and the counter shaft 52 starts to rotate.
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141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55。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 142 that rotates together with the large gear 141; and a large gear 143 that meshes with the pinion 142. The large gear 143 is attached to the rear wheel shaft 55 so as not to be rotatable relative thereto.
因此，副軸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)。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).
從動帶輪70之可動帶輪72安裝為可相對於副軸52而於軸方向呈移動自如。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60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，藉由該張力之增大，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之捲繞直徑變小，副軸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。The movable pulley 72 of the driven pulley 70 is mounted to be movable in the axial direction with respect to the counter shaft 52. 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, and the winding diameter of the V-belt 53 with respect to the drive pulley 60 is increased, the V-belt 53 wound around the driven pulley 70 is formed. When pulled toward the side of the drive pulley 60, the tension acting on the V-belt 53 becomes large, and by the increase of the tension, the movable pulley 72 of the driven pulley 70 is displaced in the direction in which the groove width is expanded, and the V-belt 53 is displaced. As the winding diameter of the driven pulley 70 becomes smaller, the counter shaft 52 rotates 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.
驅動單元90藉由未圖示控制部之控制而作動，於圖4中若輸出軸91朝箭頭X1方向突出且可動帶輪62朝X1方向滑動，則固定帶輪61與可動帶輪62之間隔擴大，V型皮帶53對於驅動帶輪60之捲繞直徑變小，同時V型皮帶53對於從動帶輪70之捲繞直徑變大，後輪15R以低速受到旋轉驅動，以亦可承受高負載。相反，若輸出軸91朝箭頭X2方向滑動且可動帶輪62朝X2方向滑動，則固定帶輪61與可動帶輪62之間隔變窄，V型皮帶53對於驅動帶輪60之捲繞直徑變大，同時V型皮帶53對於從動帶輪70之捲繞直徑變小，後輪15R以高速受到旋轉驅動。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 X1 and the movable pulley 62 slides in the X1 direction in FIG. 4, the fixed pulley 61 and the movable pulley 62 are spaced apart. Further, the winding diameter of the V-belt 53 with respect to the drive pulley 60 becomes small, and the winding diameter of the V-belt 53 with respect to the driven pulley 70 becomes large, and the rear wheel 15R is rotationally driven at a low speed, so as to withstand high. load. On the contrary, if the output shaft 91 slides in the direction of the arrow X2 and the movable pulley 62 slides in the X2 direction, the interval between the fixed pulley 61 and the movable pulley 62 becomes narrow, and the winding diameter of the V-belt 53 with respect to the drive pulley 60 becomes At the same time, the winding diameter of the V-belt 53 with respect to the driven pulley 70 becomes small, and the rear wheel 15R is rotationally driven at a high speed.
根據如上所述之V型皮帶式無段變速機50，可獲得如下之作用效果。According to the V-belt type stepless speed changer 50 as described above, the following effects can be obtained.
(a)使槽寬可變機構80作動之驅動單元90、及將該驅動單元90之動力傳達至槽寬可變機構80之動力傳達部100，係被配置於收容驅動帶輪60、從動帶輪70、及V型皮帶53之箱體40內，因此可容易確保密封性並使箱體40小型化。特別是槽寬可變機構80之驅動單元90及動力傳達部100整體處於由箱體40所覆蓋之狀態，因此可容易確保驅動單元90與動力傳達部100之間之密封性。進而，藉由將驅動單元90及動力傳達部100配置於主軸51與副軸52之間，可抑制箱體40之突出，可實現箱體40之小型化。(a) The drive unit 90 that activates the groove width variable mechanism 80 and the power transmission unit 100 that transmits the power of the drive unit 90 to the groove width variable mechanism 80 are disposed in the drive drive pulley 60 and are driven. Since the pulley 70 and the V-belt 53 are inside the casing 40, the sealing property can be easily ensured and the casing 40 can be miniaturized. In particular, since the drive unit 90 and the power transmission unit 100 of the groove width variable mechanism 80 are entirely covered by the casing 40, the sealing property between the drive unit 90 and the power transmission unit 100 can be easily ensured. Further, by disposing the drive unit 90 and the power transmission unit 100 between the main shaft 51 and the sub-shaft 52, the protrusion of the casing 40 can be suppressed, and the size of the casing 40 can be reduced.
(b)驅動單元90包括：收容有作為驅動源之馬達M之馬達部M1；及藉由馬達M之動力而作動之該驅動單元90之輸出軸91；而該輸出軸91係與主軸51或副軸52保持平行配置，因此可容易使驅動單元90與主軸51或副軸52靠近。因此，可使將驅動單元90之動力傳達至槽寬可變機構80之動力傳達部100小型化。其結果為，可實現V型皮帶式無段變速機50之小型化。(b) The drive unit 90 includes: a motor portion M1 that houses the motor M as a drive source; and an output shaft 91 of the drive unit 90 that is actuated by the power of the motor M; and the output shaft 91 is coupled to the spindle 51 or The counter shafts 52 are kept in parallel, so that the drive unit 90 can be easily brought close to the main shaft 51 or the counter shaft 52. Therefore, the power transmission unit 100 that transmits the power of the drive unit 90 to the groove width variable mechanism 80 can be miniaturized. As a result, the V-belt type stepless speed change machine 50 can be miniaturized.
(c)使驅動單元90之輸出軸91之前端91a朝向較馬達部M1而更靠V型皮帶53側突出，自與該輸出軸91正交之方向觀看下，該輸出軸91之至少一部分91c係配置於V型皮帶53之皮帶寬度W內，因此可使驅動單元90朝主軸51方向之突出量中可減去與皮帶寬度W與輸出軸91之重疊部分相當量，而可使V型皮帶無段變速機50小型化。而且，驅動單元90之馬達部M1被配置於皮帶寬度W外，因此可確實地防止V型皮帶53與馬達部M1之干涉，同時自輸出軸91之軸線方向觀看下，該輸出軸91係被配置於V型皮帶53之旋轉軌跡內53i中連結主軸51與副軸52而成之線上，故亦可防止當V型皮帶53彎曲時V型皮帶53與輸出軸91的干涉。(c) the front end 91a of the output shaft 91 of the drive unit 90 is protruded toward the V-belt 53 side toward the motor portion M1, and at least a portion 91c of the output shaft 91 is viewed from a direction orthogonal to the output shaft 91. It is disposed in the belt width W of the V-belt 53, so that the amount of protrusion of the driving unit 90 toward the main shaft 51 can be reduced by the amount corresponding to the overlapping portion of the belt width W and the output shaft 91, and the V-belt can be made. The stepless speed change machine 50 is miniaturized. Further, since the motor portion M1 of the drive unit 90 is disposed outside the belt width W, the interference between the V-belt 53 and the motor portion M1 can be surely prevented, and the output shaft 91 is viewed from the axial direction of the output shaft 91. Since the main shaft 51 and the counter shaft 52 are connected to each other in the rotation locus 53i of the V-belt 53, the V-belt 53 and the output shaft 91 can be prevented from interfering when the V-belt 53 is bent.
(d)驅動單元90構成上包括將馬達M之動力傳達至輸出軸91之減速齒輪組92，且該減速齒輪組92配置於V型皮帶53之皮帶寬度W外，同時自輸出軸91之軸線方向觀看下，減速齒輪組92與V型皮帶53相重疊，因此即使在驅動單元90包括減速齒輪組92之情況下，亦可防止減速齒輪組部與V型皮帶53之干涉，同時自輸出軸91之軸線方向觀看下，由於減速齒輪組92與V型皮帶53相重疊，故可使V型皮帶無段變速機50小型化。(d) The drive unit 90 is configured to include a reduction gear set 92 that transmits the power of the motor M to the output shaft 91, and the reduction gear set 92 is disposed outside the belt width W of the V-belt 53 while being from the axis of the output shaft 91. When viewed in the direction, the reduction gear set 92 overlaps with the V-belt 53, so that even in the case where the drive unit 90 includes the reduction gear set 92, the reduction gear group portion can be prevented from interfering with the V-belt 53, and the output shaft can be prevented. When viewed in the axial direction of 91, since the reduction gear set 92 overlaps with the V-belt 53, the V-belt stepless transmission 50 can be miniaturized.
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內可予以適當實施變形。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.
10．．．二輪機車10. . . Two-wheeled vehicle
11．．．車架11. . . Frame
11h．．．前管11h. . . Front tube
11s．．．座架11s. . . Mounts
12．．．樞軸12. . . Pivot
13．．．後避震器單元13. . . Rear shock absorber unit
14．．．前叉14. . . Fork
15．．．轉向把手15. . . Steering handle
15F．．．前輪15F. . . Front wheel
15R．．．後輪15R. . . rear wheel
16．．．座部16. . . Seat
17．．．儲物箱17. . . storage box
18．．．燃料箱18. . . Fuel tank
20．．．動力單元20. . . Power unit
30．．．引擎30. . . engine
30c．．．氣動閥用凸輪軸30c. . . Camshaft for pneumatic valve
30p．．．火星塞30p. . . Mars plug
31．．．曲柄軸箱31. . . Crank axle box
31b．．．軸承部31b. . . Bearing department
31c．．．曲柄軸31c. . . Crankshaft
31e．．．曲柄軸箱蓋31e. . . Crank axle cover
31g．．．發電機31g. . . generator
32．．．氣缸體32. . . cylinder block
32c．．．連桿32c. . . link
32p．．．活塞32p. . . piston
33．．．氣缸頭33. . . Cylinder head
33c．．．燃燒室33c. . . Combustion chamber
34．．．氣缸頭蓋34. . . Cylinder head cover
35．．．進氣管35. . . Intake pipe
35a．．．燃料供給裝置35a. . . Fuel supply device
35c．．．空氣淨化器35c. . . air purifier
36．．．排氣裝置36. . . Exhaust
40．．．變速箱40. . . Gearbox
40C．．．齒輪箱蓋40C. . . Gear box cover
40G、94．．．齒輪箱40G, 94. . . Gearbox
40L．．．左箱體40L. . . Left box
40LC．．．側蓋40LC. . . Side cover
40R．．．右箱體40R. . . Right box
41．．．安裝部41. . . Installation department
42、95、131、132．．．螺釘42, 95, 131, 132. . . Screw
50．．．V型皮帶式無段變速機50. . . V-belt type stepless speed changer
51．．．主軸51. . . Spindle
51a．．．大徑部51a. . . Large diameter department
51b．．．支持部(小徑部)51b. . . Support Department (small diameter department)
51d．．．階差部51d. . . Step difference
52．．．副軸52. . . Secondary shaft
52g．．．齒輪52g. . . gear
53．．．V型皮帶53. . . V-belt
53i．．．旋轉軌跡內53i. . . Within the rotation track
54．．．離心式離合器54. . . Centrifugal clutch
55．．．後輪軸55. . . Rear axle
60．．．驅動帶輪60. . . Drive pulley
61、71．．．固定帶輪61, 71. . . Fixed pulley
62、72．．．可動帶輪62, 72. . . Movable pulley
63．．．轂部63. . . Hub
63a．．．對向面63a. . . Opposite face
64．．．扭矩傳達面64. . . Torque communication surface
65、112d．．．孔65, 112d. . . hole
66．．．緩衝構件66. . . Cushion member
66a．．．內周壁部66a. . . Inner peripheral wall
66b．．．兩側壁部66b. . . Two side walls
66b1．．．外側面66b1. . . Outer side
66c．．．底壁部66c. . . Bottom wall
66d．．．突起66d. . . Protrusion
67．．．圓筒構件67. . . Cylinder member
67a．．．圓筒構件67之一端部67a. . . One end of the cylindrical member 67
67b．．．圓筒構件67之另一端部67b. . . The other end of the cylindrical member 67
68．．．雙螺帽68. . . Double nut
69．．．軸承69. . . Bearing
70．．．從動帶輪70. . . Driven pulley
73．．．螺旋彈簧73. . . Coil spring
80．．．槽寬可變機構80. . . Groove width variable mechanism
90．．．驅動單元90. . . Drive unit
91．．．輸出軸91. . . Output shaft
91a．．．前端面91a. . . Front end face
91b．．．滾珠螺桿(內螺紋)91b. . . Ball screw (internal thread)
91c．．．輸出軸91之至少一部分91c. . . At least a portion of the output shaft 91
91e．．．前端面91e. . . Front end face
92．．．減速齒輪組92. . . Reduction gear set
92e．．．最末段之齒輪92e. . . Last gear
93．．．滾珠螺桿(外螺紋)93. . . Ball screw (external thread)
100．．．動力傳達部100. . . Power transmission department
110．．．扭矩傳達部110. . . Torque transmission department
111．．．半徑方向部分111. . . Radial direction part
111a．．．圓板狀部分111a. . . Circular plate
112．．．軸線方向部分112. . . Axis direction part
120．．．卡合構件120. . . Engaging member
121．．．卡合部121. . . Clamping department
122．．．卡合環122. . . Snap ring
123．．．卡合槽123. . . Engagement slot
130．．．連結構件130. . . Connecting member
133．．．連結部133. . . Linkage
141．．．大徑之齒輪141. . . Large diameter gear
142．．．小齒輪142. . . gear
143．．．大齒輪143. . . big gear
c．．．鏈條c. . . Chain
L1．．．線L1. . . line
M．．．馬達M. . . motor
M1．．．馬達部M1. . . Motor department
W．．．皮帶寬度W. . . Belt width
X1、X2．．．箭頭X1, X2. . . arrow
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。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.
圖2係上述二輪機車中之包括V型皮帶式無段變速機之動力單元之側視圖。2 is a side view of a power unit including a V-belt type stepless speed changer in the above two-wheeled vehicle.
圖3係省略圖2局部之III-III剖視圖。Figure 3 is a cross-sectional view taken along the line III-III of Figure 2;
圖4係圖3之局部放大圖。Figure 4 is a partial enlarged view of Figure 3.
圖5係省略圖3局部之V箭視圖。Fig. 5 is a view showing a partial V arrow of Fig. 3 omitted.
圖6係表示扭矩傳達部110之主要部分之分解立體圖。FIG. 6 is an exploded perspective view showing a main part of the torque transmitting unit 110.
20．．．動力單元20. . . Power unit
30．．．引擎30. . . engine
30c．．．氣動閥用凸輪軸30c. . . Camshaft for pneumatic valve
30p．．．火星塞30p. . . Mars plug
31．．．曲柄軸箱31. . . Crank axle box
31b．．．軸承部31b. . . Bearing department
31c．．．曲柄軸31c. . . Crankshaft
31e．．．曲柄軸箱蓋31e. . . Crank axle cover
31g．．．發電機31g. . . generator
32．．．氣缸體32. . . cylinder block
32c．．．連桿32c. . . link
32p．．．活塞32p. . . piston
33．．．氣缸頭33. . . Cylinder head
33c．．．燃燒室33c. . . Combustion chamber
34．．．氣缸頭蓋34. . . Cylinder head cover
40．．．變速箱40. . . Gearbox
40C．．．齒輪箱蓋40C. . . Gear box cover
40G、94．．．齒輪箱40G, 94. . . Gearbox
40L．．．左箱體40L. . . Left box
40LC．．．側蓋40LC. . . Side cover
40R．．．右箱體40R. . . Right box
41．．．安裝部41. . . Installation department
42、95．．．螺釘42, 95. . . Screw
50．．．V型皮帶式無段變速機50. . . V-belt type stepless speed changer
51．．．主軸51. . . Spindle
51a．．．大徑部51a. . . Large diameter department
52．．．副軸52. . . Secondary shaft
52g．．．齒輪52g. . . gear
53．．．V型皮帶53. . . V-belt
54．．．離心式離合器54. . . Centrifugal clutch
55．．．後輪軸55. . . Rear axle
60．．．驅動帶輪60. . . Drive pulley
70．．．從動帶輪70. . . Driven pulley
71．．．固定帶輪71. . . Fixed pulley
72．．．可動帶輪72. . . Movable pulley
73．．．螺旋彈簧73. . . Coil spring
90．．．驅動單元90. . . Drive unit
92．．．減速齒輪組92. . . Reduction gear set
100．．．動力傳達部100. . . Power transmission department
120．．．卡合構件120. . . Engaging member
130．．．連結構件130. . . Connecting member
141．．．大徑之齒輪141. . . Large diameter gear
142．．．小齒輪142. . . gear
143．．．大齒輪143. . . big gear
c．．．鏈條c. . . Chain
M1．．．馬達部M1. . . Motor department
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009047424A JP5230485B2 (en) | 2009-02-28 | 2009-02-28 | V belt type continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201033502A TW201033502A (en) | 2010-09-16 |
| TWI435009B true TWI435009B (en) | 2014-04-21 |
Family
ID=42654004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW99100067A TWI435009B (en) | 2009-02-28 | 2010-01-05 | V-belt continuously variable transmission |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5230485B2 (en) |
| CN (1) | CN101818793B (en) |
| IT (1) | IT1399041B1 (en) |
| TW (1) | TWI435009B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2656517T3 (en) | 2014-02-24 | 2018-02-27 | Honda Motor Co., Ltd. | Continuously variable V-belt transmission for saddle type vehicle |
| JP6242712B2 (en) * | 2014-02-24 | 2017-12-06 | 本田技研工業株式会社 | V-belt type continuously variable transmission for saddle riding type vehicle |
| JP2016033379A (en) * | 2014-07-31 | 2016-03-10 | Ntn株式会社 | Continuously variable transmission actuator and continuously variable transmission |
| WO2016017540A1 (en) * | 2014-07-31 | 2016-02-04 | Ntn株式会社 | Actuator for continuously variable transmission, and continuously variable transmission |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03163248A (en) * | 1989-11-22 | 1991-07-15 | Tochigi Fuji Ind Co Ltd | Belt type continuously variable transmission |
| JP2967374B2 (en) * | 1990-11-20 | 1999-10-25 | 本田技研工業株式会社 | Continuously variable transmission for vehicles |
| JPH08285033A (en) * | 1995-04-18 | 1996-11-01 | Aisin Aw Co Ltd | Belt-type continuously variable transmission |
| JPH10306862A (en) * | 1997-05-01 | 1998-11-17 | Kubota Corp | Belt type continuously variable transmission for working machine |
| JPH1122798A (en) * | 1997-06-30 | 1999-01-26 | Suzuki Motor Corp | Belt type continuously variable transmission |
| JP2000283261A (en) * | 1999-03-29 | 2000-10-13 | Okuma Corp | Movable body driving device |
| TWI268320B (en) * | 2001-12-04 | 2006-12-11 | Yamaha Motor Co Ltd | Continuously variable transmission and method of controlling it allowing for control of the axial position of a movable sheave without a sensor for measuring the axial position of the movable sheave on a rotational shaft and for stable control with the movable sheave being held in position |
| JP4360492B2 (en) * | 2004-08-05 | 2009-11-11 | 本田技研工業株式会社 | Shift control device for continuously variable transmission in hybrid vehicle |
| KR100811514B1 (en) * | 2006-05-24 | 2008-03-07 | 현대자동차주식회사 | Control Device of Pulley Ratio for CVT |
| JP2008045694A (en) * | 2006-08-18 | 2008-02-28 | Nissan Motor Co Ltd | Belt-type continuously variable transmission |
-
2009
- 2009-02-28 JP JP2009047424A patent/JP5230485B2/en not_active Expired - Fee Related
-
2010
- 2010-01-05 TW TW99100067A patent/TWI435009B/en not_active IP Right Cessation
- 2010-01-27 IT ITTO2010A000052A patent/IT1399041B1/en active
- 2010-02-26 CN CN201010126236.1A patent/CN101818793B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010203482A (en) | 2010-09-16 |
| IT1399041B1 (en) | 2013-04-05 |
| JP5230485B2 (en) | 2013-07-10 |
| CN101818793B (en) | 2014-07-09 |
| ITTO20100052A1 (en) | 2010-08-29 |
| TW201033502A (en) | 2010-09-16 |
| CN101818793A (en) | 2010-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7600625B2 (en) | Centrifugal clutch | |
| TWI435010B (en) | V-belt continuously variable transmission | |
| JP5506601B2 (en) | Continuously variable transmission structure | |
| JP5241642B2 (en) | V belt type continuously variable transmission | |
| TWI435009B (en) | V-belt continuously variable transmission | |
| TWI435011B (en) | V-belt continuously variable transmission | |
| JP5689770B2 (en) | Motorcycle | |
| US8167108B2 (en) | Clutch, continuously variable transmission, engine unit including them, and straddle-type vehicle including them | |
| JP2012184788A (en) | Continuously variable transmission structure | |
| JP4573589B2 (en) | V belt type continuously variable transmission | |
| EP3421839B1 (en) | Electronically controlled v-belt continuously variable transmission | |
| JP5269647B2 (en) | V-belt continuously variable transmission for motorcycles | |
| EP1564441A1 (en) | V-belt type variable speed drive | |
| JP5037388B2 (en) | Balancer device having a damper mechanism | |
| JP5361460B2 (en) | V belt type continuously variable transmission | |
| JP2017150545A5 (en) | ||
| JP2011033066A (en) | V-belt type continuously variable transmission | |
| JP5339353B2 (en) | V belt type continuously variable transmission | |
| JP4490992B2 (en) | V belt type continuously variable transmission | |
| JP4490993B2 (en) | V-belt type continuously variable transmission and vehicle power unit | |
| JP2009061994A (en) | Power unit | |
| JP2006022927A (en) | V-belt type continuously variable transmission | |
| JP6605354B2 (en) | Electronically controlled V-belt type continuously variable transmission | |
| JP2009079691A (en) | Power unit | |
| JP2017150544A5 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |