TWI435010B - V-belt continuously variable transmission - Google Patents
V-belt continuously variable transmission Download PDFInfo
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- TWI435010B TWI435010B TW99100069A TW99100069A TWI435010B TW I435010 B TWI435010 B TW I435010B TW 99100069 A TW99100069 A TW 99100069A TW 99100069 A TW99100069 A TW 99100069A TW I435010 B TWI435010 B TW I435010B
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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～圖4)所示，已有包括如下構件之V型皮帶式無段變速機：支持於作為第1帶輪軸之主軸(11)之驅動帶輪(47)；支持於作為第2帶輪軸之副軸(50)之從動帶輪(52)；架設於該等驅動帶輪(47)與從動帶輪(52)之間的V型皮帶(55)；及藉由使驅動帶輪(47)之可動帶輪(可動半體49)沿帶輪軸(11)之可動帶輪(49)之支持部朝軸方向滑動而變更帶輪(47)之槽寬的槽寬可變機構。Conventionally, for example, as shown in Patent Document 1 (Figs. 2 to 4), there is a V-belt type stepless speed changer including the following members: a drive pulley (47) supported as a main shaft (11) of the first pulley shaft. a driven pulley (52) supported as a countershaft (50) of the second pulley shaft; a V-belt (55) mounted between the driving pulley (47) and the driven pulley (52) And changing the pulley (47) by sliding the movable pulley (movable half 49) of the drive pulley (47) along the support portion of the movable pulley (49) of the pulley shaft (11) in the axial direction. The groove width variable mechanism of the groove width.
[先前技術文獻][Previous Technical Literature]
[專利文獻][Patent Literature]
[專利文獻1]日本專利特開2006-153057號公報[Patent Document 1] Japanese Patent Laid-Open Publication No. 2006-153057
於上述習知之V型皮帶式無段變速機中，如專利文獻1之圖3、圖4所示，帶輪軸(11)與可動帶輪(49)之間的扭矩，係透過可動帶輪(49)之轂部(49B)內周面與帶輪軸(11)之可動帶輪(49)之支持部外周面之間的栓槽結合而傳達。In the above-described V-belt type stepless speed changer, as shown in Figs. 3 and 4 of Patent Document 1, the torque between the pulley shaft (11) and the movable pulley (49) is transmitted through the movable pulley ( 49) The inner peripheral surface of the hub portion (49B) is coupled to the pin groove between the outer peripheral surface of the support portion of the movable pulley (49) of the pulley shaft (11).
即，扭矩係於可動帶輪轂部之內面側傳達，因而存在作用於扭矩傳達面之每單位面積之力量(該力量於本案說明書等中稱作面壓)變大之問題。In other words, since the torque is transmitted to the inner surface side of the movable belt hub portion, there is a problem that the force per unit area of the torque transmission surface (this force is referred to as the surface pressure in the present specification or the like) becomes large.
本發明之目的在於解決上述問題，而提供一種可減小作用於帶輪軸與可動帶輪之間之扭矩傳達面的面壓之V型皮帶式無段變速機。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a V-belt type stepless speed changer which can reduce the surface pressure acting on a torque transmitting surface between a pulley shaft and a movable pulley.
為達成上述目的，本發明之V型皮帶式無段變速機包括：支持於作為第1帶輪軸之主軸的驅動帶輪；支持於作為第2帶輪軸之副軸的從動帶輪；架設於該等驅動帶輪與從動帶輪之間的V型皮帶；及藉由使上述驅動帶輪及/或從動帶輪之可動帶輪沿帶輪軸之可動帶輪之支持部朝向軸方向滑動而變更帶輪之槽寬的槽寬可變機構；其特徵在於，上述可動帶輪包括支持於上述帶輪軸之轂部，上述轂部於上述帶輪軸之半徑方向隔開設置有：於上述帶輪軸方向可移動地支持上述可動帶輪之滑動部；及被傳達有上述帶輪軸之扭矩之被傳達扭矩部。再者，於本案中在稱「帶輪軸」之情況時，係指第1及/或第2帶輪軸。In order to achieve the above object, a V-belt type stepless speed changer according to the present invention includes: a drive pulley supported as a main shaft of a first pulley shaft; and a driven pulley supported as a countershaft of the second pulley shaft; a V-belt between the drive pulley and the driven pulley; and sliding the movable pulley of the drive pulley and/or the driven pulley toward the axial direction along the support portion of the movable pulley of the pulley shaft a variable groove width mechanism for changing a groove width of the pulley; wherein the movable pulley includes a hub supported by the pulley shaft, and the hub is spaced apart from a radial direction of the pulley shaft: A sliding portion of the movable pulley is movably supported in an axle direction; and a torque transmitting portion that transmits the torque of the pulley shaft is transmitted. In the present case, the term "a pulley shaft" means the first and/or second pulley shaft.
根據該V型皮帶式無段變速機，藉由使帶輪軸方向之滑動與扭矩之被傳達於半徑方向相隔開，可避免轂部之大型化並緩和應力集中，可良好地進行可動帶輪之滑動及扭矩傳達。According to the V-belt type stepless speed changer, the sliding of the pulley shaft direction and the torque are transmitted in the radial direction, thereby preventing the enlargement of the hub portion and alleviating the stress concentration, and the movable pulley can be satisfactorily performed. Sliding and torque transmission.
即，當傳達大小相同之扭矩時，與習知情形相比，可減小作用於扭矩傳達面之面壓。該面壓之減小可有助於扭矩傳達部之小型化，進而可有助於V型皮帶無段變速機整體之小型化。That is, when the torque of the same magnitude is transmitted, the surface pressure acting on the torque transmitting surface can be reduced as compared with the conventional case. This reduction in the surface pressure contributes to the miniaturization of the torque transmitting portion, which in turn contributes to miniaturization of the entire V-belt speedless transmission.
較理想的是構成為，上述轂部之被傳達扭矩部藉由與設為無法相對於上述帶輪軸而旋轉之扭矩傳達部相卡合，而將上述帶輪軸之扭矩傳達至上述可動帶輪，上述扭矩傳達部與被傳達扭矩部可沿上述帶輪軸之軸線方向相對移動，且藉由於上述帶輪軸之旋轉方向抵接而傳達扭矩。Preferably, the transmitted torque portion of the hub portion is engaged with a torque transmitting portion that is rotatable with respect to the pulley shaft, and the torque of the pulley shaft is transmitted to the movable pulley. The torque transmitting portion and the transmitted torque portion are relatively movable in the axial direction of the pulley shaft, and the torque is transmitted by the abutment of the rotation direction of the pulley shaft.
若以如此構成，則即使於扭矩傳達部與被傳達扭矩部伴隨可動帶輪之移動而相對移動之情形時，亦可傳達帶輪軸之扭矩。According to this configuration, even when the torque transmitting portion and the transmitted torque portion move relative to each other with the movement of the movable pulley, the torque of the pulley shaft can be transmitted.
又，較理想的是構成為，上述帶輪軸包括大徑部、及經由階差部設置於該大徑部而構成上述可動帶輪之支持部之小徑部，上述扭矩傳達部為與上述帶輪軸分離之其他構件，包括朝上述帶輪軸之半徑方向延伸之凸緣部、及一體地設置於該凸緣部之上述軸方向部，該構件之上述凸緣部由插通於上述可動帶輪之轂部且安裝於上述帶輪軸之小徑部的圓筒構件之端部、與上述階差部所夾持，由此被固定為無法相對於上述帶輪軸而旋轉。Moreover, it is preferable that the pulley shaft includes a large diameter portion and a small diameter portion that is provided in the large diameter portion via the step portion to constitute the support portion of the movable pulley, and the torque transmitting portion is the belt portion The other member for separating the axle includes a flange portion extending in a radial direction of the pulley shaft, and an axial direction portion integrally provided in the flange portion, wherein the flange portion of the member is inserted into the movable pulley The end portion of the cylindrical member attached to the small-diameter portion of the pulley shaft is held by the step portion and is fixed so as not to be rotatable relative to the pulley shaft.
若以如此構成，與扭矩傳達部一體形成於帶輪軸之情形相比，可容易地將其製得，且可將扭矩傳達部固定為無法相對於帶輪軸而確實旋轉。According to this configuration, compared with the case where the torque transmitting portion is integrally formed on the pulley shaft, the torque transmitting portion can be fixed so as not to be surely rotated with respect to the pulley shaft.
又，較理想的是構成為，於上述扭矩傳達部之軸線方向部分、與上述轂部之扭矩傳達面之間，設置有合成樹脂製之緩衝構件。Further, it is preferable that a buffer member made of a synthetic resin is provided between the axial direction portion of the torque transmitting portion and the torque transmitting surface of the hub portion.
若以如此構成，則無須對扭矩傳達面供給滑脂，並可平滑地移動可動帶輪。According to this configuration, it is not necessary to supply grease to the torque transmission surface, and the movable pulley can be smoothly moved.
又，較理想的是構成為，上述扭矩傳達部之卡合部於軸線周圍設置有複數個。Further, it is preferable that the engagement portion of the torque transmission portion is provided in plural numbers around the axis.
若以如此構成，扭矩傳達可變得更順暢，同時面壓可更確實地減小。With such a configuration, the torque transmission can be made smoother, and the face pressure can be more surely reduced.
又，較理想的是構成為，於上述可動帶輪之轂部之外周，經由軸承而配置有用於使該可動帶輪滑動之卡合構件。Further, it is preferable that an engagement member for sliding the movable pulley is disposed via a bearing on the outer circumference of the hub portion of the movable pulley.
若以如此構成，可精簡地構成用於使可動帶輪滑動之動力傳達系統。又，藉由縮短軸方向長度並不將扭矩傳達至卡合構件，而可防止卡合構件之磨損。According to this configuration, the power transmission system for sliding the movable pulley can be simplified. Further, by shortening the length in the axial direction and not transmitting the torque to the engaging member, abrasion of the engaging member can be prevented.
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, 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中局部之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而朝向軸方向滑動，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 and fixing, 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 pulley 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，可動帶輪62包括支持於帶輪軸51之轂部63，且轂部63於帶輪軸之半徑方向隔開設置有：於帶輪軸方向可移動地支持可動帶輪62之滑動部63a；及被傳達有帶輪軸51之扭矩之被傳達扭矩部64。As shown in FIGS. 4-6, the movable pulley 62 includes a hub portion 63 supported by the pulley shaft 51, and the hub portion 63 is spaced apart from the radial direction of the pulley shaft to movably support the movable pulley in the direction of the pulley shaft. The sliding portion 63a of 62; and the transmitted torque portion 64 to which the torque of the pulley shaft 51 is transmitted.
扭矩傳達部110包括：朝帶輪軸51之半徑方向延伸之凸緣部111；及一體地設置於該凸緣部111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中與帶輪軸51之可動帶輪62之支持部51b的對向面(本實施形態中係轂部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(本實施形態中係於圓周方向上等間距地設置有3個)。The torque transmitting portion 110 includes a flange portion 111 that extends in the radial direction of the pulley shaft 51, and an axial direction portion 112 that is integrally provided to the flange portion 111 and that extends 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 shaft 51 (the inner circumferential surface of the boss portion 63 in the present embodiment) 63a. At the office. A plurality of the axial direction portions 112 are provided (in the present embodiment, three are provided at equal intervals in the circumferential direction).
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之凸緣部111形狀如下；使圓板狀部分111a於3個部位處朝半徑方向呈輻射狀地延設，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 flange portion 111 of the torque transmitting portion 110 has a shape as follows: the disk-shaped portion 111a is radially extended in three places at a radial position, and the axial direction portion 112 is integrally formed at the front end of the extended portion, respectively. .
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係於安裝有緩衝構件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 in which 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夾持凸緣部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 flange 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之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 and 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之軸線方向上，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 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. 31b and configured. 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 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)可動帶輪62包括支持於帶輪軸51之轂部63，且轂部63於帶輪軸之半徑方向隔開設置有：於帶輪軸方向可移動地支持可動帶輪62之滑動部63a；及被傳達有帶輪軸51之扭矩之被傳達扭矩部64；因此藉由使帶輪軸方向之滑動與扭矩之被傳達於半徑方向相隔開，可避免轂部63之大型化並緩和應力集中，可良好地進行可動帶輪之滑動及扭矩傳達。(a) the movable pulley 62 includes a hub portion 63 supported by the pulley shaft 51, and the hub portion 63 is spaced apart from the radial direction of the pulley shaft: a sliding portion 63a movably supporting the movable pulley 62 in the pulley shaft direction; And the transmitted torque portion 64 having the torque of the wheel shaft 51 is transmitted; therefore, by sliding the pulley shaft direction and the torque in the radial direction, the increase in the boss portion 63 and the stress concentration can be avoided. The sliding and torque transmission of the movable pulley is performed well.
即，當傳達大小相同之扭矩時，與習知相比，可減小作用於扭矩傳達面之面壓。該面壓之減小可有助於扭矩傳達部之小型化，進而可有助於V型皮帶無段變速機整體之小型化。That is, when the torque of the same magnitude is transmitted, the surface pressure acting on the torque transmitting surface can be reduced as compared with the conventional one. This reduction in the surface pressure contributes to the miniaturization of the torque transmitting portion, which in turn contributes to miniaturization of the entire V-belt speedless transmission.
(b)藉由設置與滑動面63a不同之扭矩傳達面64，可於同一構件62形成滑動面63a及扭矩傳達面64，並減小施加至滑動面63a之負載。因此，無須對滑動面63a供給油或滑脂等。(b) By providing the torque transmitting surface 64 different from the sliding surface 63a, the sliding surface 63a and the torque transmitting surface 64 can be formed in the same member 62, and the load applied to the sliding surface 63a can be reduced. Therefore, it is not necessary to supply oil, grease, or the like to the sliding surface 63a.
(c)轂部63之被傳達扭矩部(扭矩傳達面64)藉由與設為無法相對於帶輪軸旋轉之扭矩傳達部110相卡合而將帶輪軸之扭矩傳達至可動帶輪62，扭矩傳達部110與被傳達扭矩部64可沿帶輪軸之軸線方向相對移動，並藉由於帶輪軸之旋轉方向抵接而傳達扭矩，因此即使於扭矩傳達部110與被傳達扭矩部伴隨可動帶輪62之移動而相對移動之情形時，亦可傳達帶輪軸之扭矩。(c) The torque transmitting portion (torque transmitting surface 64) of the hub portion 63 is engaged with the torque transmitting portion 110 that is not rotatable with respect to the pulley shaft, and the torque of the pulley shaft is transmitted to the movable pulley 62, and the torque is transmitted. The transmitting unit 110 and the transmitted torque unit 64 are relatively movable in the axial direction of the pulley shaft, and the torque is transmitted by the abutment of the rotational direction of the pulley shaft. Therefore, even if the torque transmitting portion 110 and the transmitted torque portion are accompanied by the movable pulley 62 When moving and moving relative to each other, the torque of the pulley shaft can also be transmitted.
(d)設為無法相對於帶輪軸51旋轉之扭矩傳達部110係包括：朝帶輪軸51之半徑方向延伸之凸緣部111；及一體地設置於該凸緣部111之軸線方向部分112，該軸線方向部分112位於半徑方向上較可動帶輪62中與帶輪軸51之可動帶輪62之支持部51b的對向面63a更靠外側處，並朝帶輪軸51之軸線方向延伸，且於該軸線方向部分112與轂部63之扭矩傳達面64之間進行扭矩傳達，因此與習知技術相比，可減小作用於扭矩傳達面64之面壓。(d) The torque transmitting portion 110 that is not rotatable with respect to the pulley shaft 51 includes a flange portion 111 that extends in the radial direction of the pulley shaft 51, and an axial direction portion 112 that is integrally provided in the flange portion 111, The axial direction portion 112 is located further outward in the radial direction than the opposing surface 63a of the movable portion of the movable pulley 62 of the movable pulley 62 of the pulley shaft 51, and extends toward the axis of the pulley shaft 51, and Torque is transmitted between the axial direction portion 112 and the torque transmitting surface 64 of the boss portion 63, so that the surface pressure acting on the torque transmitting surface 64 can be reduced as compared with the prior art.
即，當傳達大小相同之扭矩時，與習知相比可減小作用於扭矩傳達面64之面壓。該面壓之減小可有助於扭矩傳達部110之小型化，進而可有助於V型皮帶無段變速機50整體之小型化。That is, when the torque of the same magnitude is transmitted, the surface pressure acting on the torque transmitting surface 64 can be reduced as compared with the conventional one. This reduction in the surface pressure contributes to downsizing of the torque transmitting portion 110, and further contributes to miniaturization of the entire V-belt type stepless speed changer 50.
(e)帶輪軸51包括大徑部51a、及經由階差部51d而設置於該大徑部51a而構成可動帶輪62之支持部的小徑部51b，扭矩傳達部110為與帶輪軸51分離之其他構件，該構件110之上述凸緣部111由插通於可動帶輪62之轂部63中且安裝於帶輪軸51之小徑部51b的圓筒構件67之端部67a、及階差部51d所夾持，而固定為無法相對於帶輪軸51而旋轉，因此與一體形成於帶輪軸51之情形相比，可容易地製作扭矩傳達部110，且可將扭矩傳達部110固定為確實無法相對於帶輪軸51而旋轉。(e) The pulley shaft 51 includes a large diameter portion 51a and a small diameter portion 51b that is provided in the large diameter portion 51a via the step portion 51d to form a support portion of the movable pulley 62. The torque transmission portion 110 is coupled to the pulley shaft 51. The other member to be separated, the flange portion 111 of the member 110 is inserted into the end portion 67a of the cylindrical member 67 which 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, and the step Since the difference portion 51d is held and fixed so as not to be rotatable with respect to the pulley shaft 51, the torque transmission portion 110 can be easily manufactured and the torque transmission portion 110 can be fixed as compared with the case where the pulley portion 51 is integrally formed. It is indeed impossible to rotate with respect to the pulley shaft 51.
(f)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，設置有合成樹脂製之緩衝構件66，因此無須對扭矩傳達面64供給滑脂，並且亦可抑制噪音之產生。(f) Since the buffer member 66 made of synthetic resin is provided between the axial direction portion 112 of the torque transmitting portion 110 and the torque transmitting surface 64 of the boss portion 63, it is not necessary to supply the grease to the torque transmitting surface 64, and it is also possible to suppress The generation of noise.
(g)扭矩傳達部110之軸線方向部分112於軸線周圍設置有複數個，因此扭矩傳達可變得更順暢，同時可更確實地減小面壓。(g) The axial direction portion 112 of the torque transmitting portion 110 is provided in plural around the axis, so that the torque transmission can be made smoother, and the face pressure can be more surely reduced.
(h)於可動帶輪62之轂部63外周，經由軸承69而配置有用於使該可動帶輪62滑動之卡合構件120，因此可精簡地構成用於使可動帶輪62滑動之動力傳達系統。又，藉由縮短軸方向長度並使扭矩不傳達至卡合構件120，可防止卡合構件120之磨損。(h) The engagement member 120 for sliding the movable pulley 62 is disposed on the outer circumference of the boss portion 63 of the movable pulley 62 via the bearing 69. Therefore, the power for sliding the movable pulley 62 can be simplified. system. Further, by shortening the length in the axial direction and preventing the torque from being transmitted to the engaging member 120, the wear of the engaging member 120 can be prevented.
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(箱體)40. . . Gearbox (box)
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(帶輪軸)51. . . Spindle (with axle)
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(內周面；滑動部；滑動面)63a. . . Opposite surface (inner peripheral surface; sliding portion; sliding surface)
64．．．扭矩傳達面(被傳達扭矩部)64. . . Torque transmission surface (transmitted torque part)
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．．．凸緣部111. . . Flange
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係上述二輪機車中包括V型皮帶式無段變速機之動力單元之側視圖。Fig. 2 is a side view of the power unit including the 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.
31b．．．軸承部31b. . . Bearing department
31c．．．曲柄軸31c. . . Crankshaft
51．．．主軸(帶輪軸)51. . . Spindle (with axle)
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
53．．．V型皮帶53. . . V-belt
60．．．驅動帶輪60. . . Drive pulley
61．．．固定帶輪61. . . Fixed pulley
62．．．可動帶輪62. . . Movable pulley
63．．．轂部63. . . Hub
63a．．．對向面(內周面；滑動部；滑動面)63a. . . Opposite surface (inner peripheral surface; sliding portion; sliding surface)
66．．．緩衝構件66. . . Cushion member
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
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)
94．．．齒輪箱94. . . Gearbox
100．．．動力傳達部100. . . Power transmission department
110．．．扭矩傳達部110. . . Torque transmission department
111．．．凸緣部111. . . Flange
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
131、132．．．螺釘131, 132. . . Screw
133．．．連結部133. . . Linkage
M1．．．馬達部M1. . . Motor department
W．．．皮帶寬度W. . . Belt width
X1、X2．．．箭頭X1, X2. . . arrow
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009047427A JP5306858B2 (en) | 2009-02-28 | 2009-02-28 | V belt type continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201033503A TW201033503A (en) | 2010-09-16 |
| TWI435010B true TWI435010B (en) | 2014-04-21 |
Family
ID=42654002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW99100069A TWI435010B (en) | 2009-02-28 | 2010-01-05 | V-belt continuously variable transmission |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5306858B2 (en) |
| CN (1) | CN101818791B (en) |
| IT (1) | IT1399047B1 (en) |
| TW (1) | TWI435010B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI737154B (en) * | 2020-02-05 | 2021-08-21 | 光陽工業股份有限公司 | Locomotive rear rocker arm configuration |
| TWI749499B (en) * | 2020-03-30 | 2021-12-11 | 光陽工業股份有限公司 | Transmission structure of locomotive |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6120328B2 (en) * | 2013-09-30 | 2017-04-26 | 本田技研工業株式会社 | V belt type continuously variable transmission |
| TWI567317B (en) * | 2015-03-31 | 2017-01-21 | 三陽工業股份有限公司 | Multi-mode continuously variable transmission mechanism |
| CN107923499B (en) * | 2015-08-20 | 2020-06-23 | 优尼冲压株式会社 | Plunger member for belt type continuously variable transmission |
| WO2023171241A1 (en) * | 2022-03-11 | 2023-09-14 | 株式会社エフ・シー・シー | Pulley device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0135973Y2 (en) * | 1984-11-01 | 1989-11-01 | ||
| JP2907642B2 (en) * | 1992-07-13 | 1999-06-21 | 株式会社クボタ | Belt-type continuously variable transmission |
| JPH10306862A (en) * | 1997-05-01 | 1998-11-17 | Kubota Corp | Belt type continuously variable transmission for working machine |
| CN2370220Y (en) * | 1998-07-17 | 2000-03-22 | 宋能训 | Slideway roller of driven wheel external shaft casing |
| CN100465477C (en) * | 2004-07-27 | 2009-03-04 | 雅马哈发动机株式会社 | V-belt type continuously variable transmission |
| DE112005002710A5 (en) * | 2004-08-24 | 2007-08-09 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Tapered belt transmission, method for its production and vehicle with such a transmission |
| JP4776213B2 (en) * | 2004-11-25 | 2011-09-21 | 本田技研工業株式会社 | V-belt type automatic transmission |
| JP4280279B2 (en) * | 2006-10-26 | 2009-06-17 | 株式会社山田製作所 | V-belt type automatic transmission pulley |
-
2009
- 2009-02-28 JP JP2009047427A patent/JP5306858B2/en not_active Expired - Fee Related
-
2010
- 2010-01-05 TW TW99100069A patent/TWI435010B/en not_active IP Right Cessation
- 2010-01-29 IT ITTO2010A000060A patent/IT1399047B1/en active
- 2010-02-26 CN CN 201010126229 patent/CN101818791B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI737154B (en) * | 2020-02-05 | 2021-08-21 | 光陽工業股份有限公司 | Locomotive rear rocker arm configuration |
| TWI749499B (en) * | 2020-03-30 | 2021-12-11 | 光陽工業股份有限公司 | Transmission structure of locomotive |
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO20100060A1 (en) | 2010-08-29 |
| JP2010203484A (en) | 2010-09-16 |
| CN101818791A (en) | 2010-09-01 |
| CN101818791B (en) | 2012-12-26 |
| IT1399047B1 (en) | 2013-04-05 |
| JP5306858B2 (en) | 2013-10-02 |
| TW201033503A (en) | 2010-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |