TW200949105A - Power unit - Google Patents

Power unit Download PDF

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Publication number
TW200949105A
TW200949105A TW98103067A TW98103067A TW200949105A TW 200949105 A TW200949105 A TW 200949105A TW 98103067 A TW98103067 A TW 98103067A TW 98103067 A TW98103067 A TW 98103067A TW 200949105 A TW200949105 A TW 200949105A
Authority
TW
Taiwan
Prior art keywords
movable
pulley
driven
cylindrical portion
pulley half
Prior art date
Application number
TW98103067A
Other languages
Chinese (zh)
Inventor
Kaoru Hanawa
Yutaka Imoto
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of TW200949105A publication Critical patent/TW200949105A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/04—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism
    • F16H63/06—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions
    • F16H63/067—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions mechanical actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/52—Pulleys or friction discs of adjustable construction
    • F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/52—Pulleys or friction discs of adjustable construction
    • F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
    • F16H55/563—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable actuated by centrifugal masses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F16H61/66254—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling
    • F16H61/66268—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling using purely mechanical sensing or control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F16H61/66272—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members characterised by means for controlling the torque transmitting capability of the gearing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

A power unit having a belt-driven continuously variable transmission (CVT) is disclosed. A compression spring (43) for urging a movable pulley half (40) of a driven pulley (14) toward a stationary pulley half (30), and a centrifugal mechanism (20) for imparting a thrust against an urging force of the compression spring to the movable pulley half are provided on both sides of the driven pulley so as to reduce the width of the power unit in a vehicle width direction.

Description

200949105 六、發明說明： 【發明所屬之技術領域】 . 本發明係關於具有一皮帶傳動無段變速器（CVT)之一動 力單元。 【先前技術】 在-動力傳動系中提供—皮帶傳動無段變速器（cv乃用 ‘ 於傳送一曲軸的旋轉力以驅動車輪是已知的，如在日本專 W第'115 HQ5 G52245 A5虎中所揭示。該皮帶傳動無段變速器 (CVT)包括在-驅動皮帶輪單元和—從動皮帶輪單元之間 和周圍延伸的-皮帶，且其速度係藉由變化該皮帶的節徑 而改變。 在日本專利第JPH05_052245 A號中揭示的皮帶傳動m 包括-輸入軸側變速皮帶輪、一輸出轴側變速皮帶輪、及 在該等皮帶輪之間和周圍延伸的—皮帶。該輸出轴側變速 皮=輪包括-輸出側固定皮帶輪和一輸出側可動皮帶輪。 e a當以高速運轉時’輸出側可動皮帶輪件以遠離輸出惻固 定皮帶輪件的方向移動，因此皮帶節徑減小。結合該輪出 • 皮▼輪件的移動—螺旋彈箦受到壓縮，JL㈣旋彈簧的 反作用力與壓縮的量成比例增加。因由螺旋彈菁的反作用 力增加，故在皮帶的邊緣上的橫向壓力增加。橫向壓力的 增加可導致變速裝置的傳動效率降低。 為了消除此問題，離心力賦予構件被提供至輸出側變速 皮帶輪。明確言之，離心力在高速操作期間增加’且離心 力賦予構件係於徑向移動至外側。該移動引起輸出側從動 I38055.doc 200949105 皮帶輪件的一延長部分以遠離輸出側固定皮帶輪件的方向 移動。在遠離輪出側固定皮帶輪件的方向上的力，係經由 延長部分的移動被施加至輸出側動皮帶輪件。施加至輸出 侧動皮帶輪件的力可用來減輕由螺旋彈簣施加在皮帶上的 壓力。因而，可防止變速裝置的傳動效率降低。 螺旋彈簧被提供在輸出侧可動皮帶輪件遠離輸出側固定 皮帶輪件移動的方向上的一位置中。因離心力賦予構件係 在遠離輸出侧固定皮帶輪件的方向上被提供在甚至遠於螺 旋彈菁之位置的位置中’故輸出軸側變速輪係作為一整體 在遠離輸出側固定皮帶輪件的方向上顯著地突出。在一方 向中之該一顯著的冑出，纟=輪車之情況下會導致車輛寬 度增加。因為車輛寬度受到限制，在二輪車輛中必須減少 突出量。 【發明内容】 本發明之一目的是提供具有一皮帶傳動無段變速器的一 動力單元，該動力單元在車輛寬度的單單一方向上沒有顯 著突出。 ~ 根據本發明之一態樣，對於皮帶傳動無段變速器提供一 動力單元，其包括：一驅動皮帶輪，自一曲軸之旋轉驅動 力被傳送至其上；一從動皮帶輪’該從動皮帶輪係設在一 從動軸上用於將來自該曲轴之旋轉驅動力傳送至_驅動車 輪，遠從動皮帶輪係由在從動軸的抽向上被限制不得移動 的一固定皮帶輪半體’及在從動轴的軸向上可移動的一可 動皮帶輪半體所組成；—皮帶，其在驅動皮帶輪和從動皮 138055.doc 200949105 帶輪之間和周圍延伸；推動構件，其用於朝向固定皮帶輪 半體推動可動皮帶輪半體；及一離心機構，其根據從動皮 帶輪的旋轉速度，賦予一抵抗推動構件的推動力之推力至 可動皮帶輪半體；其中該推動構件與該離心機構分別設置 在從動軸之軸向上的從動皮帶輪的相反側上。 因為離心機構和推動構件如此般之配置以便分別地被定 位在從動皮帶輪的兩側上，所以可防止從動皮帶輪單元在200949105 VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a power unit having a belt drive stepless transmission (CVT). [Prior Art] Provided in the - power train - belt drive stepless transmission (cv is used to transmit the rotational force of a crankshaft to drive the wheel is known, as in the Japanese special W'115 HQ5 G52245 A5 tiger It is disclosed that the belt-drive stepless transmission (CVT) includes a belt extending between and around the drive pulley unit and the driven pulley unit, and the speed thereof is changed by changing the pitch diameter of the belt. The belt drive m disclosed in the patent No. JPH05_052245 A includes an input shaft side shifting pulley, an output shaft side shifting pulley, and a belt extending between and around the pulleys. The output shaft side shifting leather = wheel includes - The output side fixed pulley and the output side movable pulley. When the ea is running at high speed, the output side movable pulley member moves away from the output 恻 fixed pulley member, so the belt pitch diameter is reduced. Combined with the wheel exit • Leather ▼ wheel The movement—the spiral magazine is compressed, and the reaction force of the JL (four) coil spring increases in proportion to the amount of compression. Because the reaction force of the spiral is increased, The lateral pressure on the edge of the belt is increased. The increase in the lateral pressure may result in a decrease in the transmission efficiency of the shifting device. To eliminate this problem, the centrifugal force imparting member is supplied to the output side shifting pulley. Specifically, the centrifugal force is increased during high speed operation' The centrifugal force imparts a radial movement to the outside. This movement causes the output side to be driven. I38055.doc 200949105 An extension of the pulley member moves in a direction away from the output side fixed pulley member. In the direction of fixing the pulley member away from the wheel exit side The force is applied to the output side moving pulley member via the extension of the movement. The force applied to the output side moving pulley member can be used to relieve the pressure exerted on the belt by the helical magazine. Thus, the transmission efficiency of the transmission can be prevented. The coil spring is provided in a position in the direction in which the output side movable pulley member moves away from the output side fixed pulley member. The centrifugal force imparting member is provided in a direction away from the output side fixed pulley member even at a far angle from the spiral In the position of the position of the cyanine The wheel train as a whole protrudes significantly in the direction away from the output side fixed pulley member. This significant split in one direction, 纟 = wheeled vehicle will result in an increase in vehicle width. Because the vehicle width is limited, SUMMARY OF THE INVENTION It is an object of the present invention to provide a power unit having a belt-drive stepless transmission that does not significantly protrude in a single direction of the vehicle width. In one aspect, a power unit is provided for the belt drive stepless transmission, comprising: a drive pulley to which a rotational driving force from a crankshaft is transmitted; a driven pulley 'the driven pulley is coupled to a slave The moving shaft is used to transmit the rotational driving force from the crankshaft to the _ drive wheel, and the far driven pulley is a fixed pulley half body that is restricted from being moved in the drawing direction of the driven shaft and the shaft on the driven shaft a movable pulley half body that is movable upward; a belt, which is driven on the pulley and the driven leather 138055.doc 200949105 pulley Extending between and around; a pushing member for pushing the movable pulley half toward the fixed pulley half; and a centrifugal mechanism for imparting a pushing force against the pushing force of the pushing member to the movable pulley according to the rotational speed of the driven pulley a half body; wherein the pushing member and the centrifugal mechanism are respectively disposed on opposite sides of the driven pulley in the axial direction of the driven shaft. Since the centrifugal mechanism and the urging member are so configured as to be positioned on both sides of the driven pulley, respectively, the driven pulley unit can be prevented from being

一側上增加尺寸；也就是，在車輛寬度的單單一方向的突 出可被防止。 較佳的是，可動皮帶輪半體包括用於接觸皮帶的 一表面的一可移動側傘狀部，及在推動構件的方向沿著從 動軸自可移動側傘狀部延伸的__可移動侧圓筒部；且藉由 連接離心機構至可移動側圓筒部，可動皮帶輪半體會^予 抵抗推動構件之推動力之推力至該可動皮帶輪半體。因為 離心機構如是般之被連接至可移動側圓筒部，所以可減小 離心機構的外徑’且可易於製造小型的離心機構。 希望的S，固^皮帶輪半體包括用於接觸皮帶的另一側 的一表面的一固定侧傘狀部’及—固定側圓筒部，i在推 方向沿著從動軸自固定側傘狀部延伸且具有成形 為絲孔之凸輪凹槽並容納在可移動側圓筒部；且藉由促 =-銷自可移動側圓筒部至從動軸的一外周邊表面突 固;=輪凹槽，且連接銷的-遠端部至離心機構，使 皮讀半體會賦予抵抗推動構件的推動力之 可動皮帶輪半體。從而，由一銷 至°亥 凸輪凹槽組成的一現 138055.doc 200949105 有的扭力凸輪機構可原狀利用無需修飾。因而，可減少用 於接合離心機構與可移動側圓筒部的組件的數量。 【實施方式】 (第一實施例） 提供在一動力傳動系中之圖丨所示之該第一實施例的動 力單元10係用於傳送藉由一活塞11驅動的一曲軸12的旋轉 力至一驅動車輪W，並具有作為基本元件的一驅動皮帶輪 13、具有一從動皮帶輪15的一從動皮帶輪單元14，及在驅 動皮帶輪13和從動皮帶輪15之間和周圍延伸的一皮帶16 ^ 在該實施例中，由驅動皮帶輪13、從動皮帶輪15、皮帶 16、及複數個齒輪所組成之一最終減速機構17被完全地容 納在一動力單元罩18中，且一引擎19被安裝在動力單元罩 18的前端。 從動皮帶輪單元14具有從動皮帶輪15、設於一從動軸21 上的一離心機構20、及一離心離合器機構5〇。從動皮帶輪 15係由不在從動軸21的縱向方向移動的一固定皮帶輪半體 30、及可相對於從動軸21的縱向方向移動以便遠離或接近 固定皮帶輪半體30的一可動皮帶輪半體40所組成。 如圖2中所示’離心機構2 〇係由一固定於從動轴21的固 定傾斜圓盤22 ; —經由鋼珠23、23面向固定傾斜圓盤22設 置並被提供以便能夠沿著從動轴21移動的可移動傾斜圓盤 24 ; —沿著從動軸21自可移動傾斜圓盤24延伸的内圓筒 25 ;及一用於支撐内圓筒25以便使得内圓筒25在從動軸21 上旋轉及在轴向上移動的滾針軸承26所組成。滾針轴承26The size is increased on one side; that is, the protrusion in a single direction of the width of the vehicle can be prevented. Preferably, the movable pulley half includes a movable side umbrella portion for contacting a surface of the belt, and a movable portion extending from the movable side umbrella portion along the driven shaft in the direction of the pushing member. The side cylindrical portion; and by connecting the centrifugal mechanism to the movable side cylindrical portion, the movable pulley half body is urged against the pushing force of the pushing member to the movable pulley half. Since the centrifugal mechanism is connected to the movable side cylindrical portion as it is, the outer diameter of the centrifugal mechanism can be reduced and a small centrifugal mechanism can be easily manufactured. Desirable S, the pulley halves include a fixed side umbrella portion for contacting a surface of the other side of the belt and a fixed side cylindrical portion, i is self-fixing side umbrella along the driven shaft in the pushing direction a portion extending and having a cam groove shaped as a wire hole and received in the movable side cylindrical portion; and being protruded from the movable side cylindrical portion to an outer peripheral surface of the driven shaft by the pin == pin; The groove is grooved, and the distal end of the pin is connected to the centrifugal mechanism, so that the skin reading half body is given a movable pulley half body that resists the pushing force of the pushing member. Thus, a flash cam mechanism consisting of a pin to a gulf cam groove 138055.doc 200949105 can be used as it is without modification. Thus, the number of components for engaging the centrifugal mechanism and the movable side cylindrical portion can be reduced. [Embodiment] (First Embodiment) A power unit 10 of the first embodiment shown in a diagram of a power train is provided for transmitting a rotational force of a crankshaft 12 driven by a piston 11 to A drive wheel W having a drive pulley 13 as a basic component, a driven pulley unit 14 having a driven pulley 15, and a belt 16 extending between and around the drive pulley 13 and the driven pulley 15 In this embodiment, one of the final reduction mechanisms 17 consisting of the drive pulley 13, the driven pulley 15, the belt 16, and the plurality of gears is completely housed in a power unit cover 18, and an engine 19 is mounted The front end of the power unit cover 18. The driven pulley unit 14 has a driven pulley 15, a centrifugal mechanism 20 provided on a driven shaft 21, and a centrifugal clutch mechanism 5''. The driven pulley 15 is a fixed pulley half 30 that is not moved in the longitudinal direction of the driven shaft 21, and a movable pulley half that is movable relative to the longitudinal direction of the driven shaft 21 so as to be away from or close to the fixed pulley half 30. 40 components. As shown in Fig. 2, the 'centrifugal mechanism 2 is provided by a fixed inclined disc 22 fixed to the driven shaft 21; - is disposed via the steel balls 23, 23 facing the fixed inclined disc 22 and is provided so as to be able to follow the driven shaft 21 movable movable inclined disk 24; - inner cylinder 25 extending from movable tilting disc 24 along driven shaft 21; and one for supporting inner cylinder 25 so that inner cylinder 25 is on the driven shaft 21 is composed of a needle bearing 26 that rotates upward and moves in the axial direction. Needle roller bearing 26

138055.doc -6 - 200949105 被提供至内圓筒25以便可相對於從動抽21滑動，或設於從 動軸21以便可相對於内圓筒25滑動。 固疋皮帶輪半體30係由用於與皮帶16接觸的一固定側傘 狀部31 ;及自固定側傘狀部31延伸以便覆蓋内圓筒25的一 固疋側圓筒部33所組成。固定側圓筒部33的遠端部被支撐 以便、.星自；^向軸承32可纟從動抽2丄上旋轉及在從動轴2】 的縱向方向移動。參考數字34指在内圓筒25和固定側圓筒 部33的鄰近部分之間提供的一油封。 可動皮帶輪半體40包含：用於接觸皮帶16的一可移動側 牛狀邠41，自可移動侧傘狀部41延伸以便覆蓋固定側圓筒 4 33的可移動側圓筒部42，該可移動側圓筒部分42係由 固定側圓筒部分33支樓以便可在從動軸21上旋轉及在從動 軸21的縱向方向上移動；及用於朝向固定侧傘狀部3 1推動 可移動側傘狀部分41的一壓縮彈簧（推動構件）43。該推動 構件亦可為一扭力彈簧而不是壓縮彈簧43。參考數字料和 45指油封。 此外又形成突出部46，46以便在徑向方向自可移動側圓 筒部42的内周邊表面向内突出，且突出 固定側圓筒㈣料㈣表面料。 以皮帶16的位置作為一參考，離心離合器機構5〇係設置 在固定側圓筒部33的遠端，其位置為離心機構20所設置之 位置的相對側。離心離合器機構5〇係由設於從動轴2丨的一 蓋構件51 自gj定側圓筒部33朝向蓋構件5ι的外周邊延伸 的臂構件52，52 ;及當賦予的離心力增加時用於枢轉並接 138055.doc 200949105 觸蓋構件51以傳送驅動力之配重53，53所組成，配重幻， 53係設於臂構件52，52的遠端以便可樞轉。 有壓縮彈簧43安裝於其上的一套筒54，係被安裝在可移 動側圓筒部42的外周邊上。套筒54在其朝向可移動側傘狀 部41的一端上具有一彈簧固定器55。該彈簧固定器“以一 鉤狀在套筒54的徑向向外部突出。壓縮彈簧43被安裝在套 筒54的外周邊上以便在從動軸21的縱向方向延伸。 明確言之，壓縮彈簧43被安裝在套筒54的外周邊上以便 介在彈簧固定器55和離心離合器機構5〇的臂構件兄，52之 間，且可動皮帶輪半體4〇係連續地被推動以便在固定皮帶 輪半體30的方向移動。由於壓縮彈料的另一端係由臂構 件52，52固定，所以不需要彈簧固定器或一專用構件來固 定其另一端。 因為可移動側圓筒部42在#内周邊表面上具有在徑向方 向向内突出的突出部46，46，所以可移動側圓筒部42被以 一適當間隙安裝在固定側圓筒部33上，即如圖3中所示。 ，定側圓筒部33係被安裝在離心機構2()的内圓筒。上。固 定側圓筒部33具有凸輪凹槽58。可移動側圓筒部42具有自 可移動側圓筒部42朝向從動軸21突出的料。銷％的遠端 部分57經由凸輪凹槽58被連接至内圓筒25。可移動側圓筒 部42因此經由銷56被機械地連接至内圓筒μ。 "除了固疋壓縮彈簧43，套筒54亦防止銷％因離心力而在 控向方向出現。 如圖4中所示’有角度地設置凸輪凹槽58以便在固定側 138055.doc 200949105 圓筒部33中形成一螺線。 • 當可動皮帶輪半體40如由箭頭⑴所示作旋轉時，銷％ 73由凸輪凹槽58導引’因此可動皮帶輪半體40乃如箭頭⑺ 所不般之移動。換句話說，當可動皮帶輪半體4〇相對於固 - 冑皮帶輪半體3G以超過固定皮帶輪半體3G的旋轉速度的一 , _速度旋轉時’可動皮帶輪半體4G將朝向m定皮帶輪半 . 體30移動，而銷56乃由凸輪凹槽58導引。藉此可增加由固 _ 定皮帶輪半體30和可動皮帶輪半體40固定皮帶之力，且例 如，在快速加速度之情況下可防止該皮帶滑動。 此機構有效地利用凸輪凹槽，並因此被稱作扭力凸輪 機構。明確言之，該扭力凸輪機構係由在固定側圓筒部33 中形成的凸輪凹槽58、及自可移動側圓筒部42延伸的銷56 所組成。 本發明之一特徵係内圓筒25被機械地連接至構成扭力凸 輪機構的銷56的遠端部57。 φ 儘官在本發明實施例中銷56的遠端部57被連接至内圓筒 25，該等遠端部57亦可與内圓筒25接觸。 基於圖5 ’將接著描述組態為如上面描述的皮帶傳動無 段變速器的從動皮帶輪單元的操作。 • 如圖5中所示’因為皮帶16的直徑在從動皮帶輪15的高 速旋轉期間增加’可動皮帶輪半體40如箭頭（3)所示作移 動。接著，壓縮彈簣43被壓縮，且一大的彈簧反作用力出 現。因旋轉速度增加’鋼珠23，23在如箭頭（4)、（4)所示 的徑向移動至外側。可移動傾斜圓盤24和内圓筒25藉此乃 138055.doc 200949105 如箭頭(5)所示作移動。此移動經由銷％推動可移動側圓筒 42至圖式之左側。因為壓縮彈簧43的此一壓力和反作用 力彼此相對指肖，所以-減少的反作用力作用於皮帶16的 側面’並可防止皮帶傳動無段變速器的傳動效率降低。 在第一實施例中，壓縮彈簧43係設在皮帶16的一位置 上，*亥位置與朝向驅動車輪W所設的離心機構20的位置處 - 於相反側，即如圖丨中所示。較之壓縮彈簧43及離心機構 · 20都設置在從動皮帶輪單元14的右或左側，可減少自從動 皮帶輪單tl14突出的量。明確言之，可防止從動皮帶輪單 ❹ 元14之尺寸在一側上增加。138055.doc -6 - 200949105 is supplied to the inner cylinder 25 so as to be slidable relative to the driven pump 21 or to the driven shaft 21 so as to be slidable relative to the inner cylinder 25. The fixed pulley half 30 is composed of a fixed side umbrella portion 31 for contacting the belt 16 and a fixed side cylindrical portion 33 extending from the fixed side umbrella portion 31 so as to cover the inner cylinder 25. The distal end portion of the fixed-side cylindrical portion 33 is supported so that the bearing 32 can be driven to rotate upward and in the longitudinal direction of the driven shaft 2]. Reference numeral 34 refers to an oil seal provided between the inner cylinder 25 and the adjacent portion of the fixed side cylindrical portion 33. The movable pulley half 40 includes: a movable side horn 41 for contacting the belt 16, extending from the movable side umbrella portion 41 so as to cover the movable side cylindrical portion 42 of the fixed side cylinder 4 33, which can The moving side cylindrical portion 42 is branched by the fixed side cylindrical portion 33 so as to be rotatable on the driven shaft 21 and moved in the longitudinal direction of the driven shaft 21; and for being pushed toward the fixed side umbrella portion 31 A compression spring (pushing member) 43 of the side umbrella portion 41 is moved. The push member can also be a torsion spring rather than a compression spring 43. Refer to the digital material and the 45 finger oil seal. Further, projections 46, 46 are formed to protrude inward from the inner peripheral surface of the movable side cylindrical portion 42 in the radial direction, and the side cylinder (4) material (4) is fixedly protruded. Taking the position of the belt 16 as a reference, the centrifugal clutch mechanism 5 is disposed at the distal end of the fixed-side cylindrical portion 33 at a position opposite to the position at which the centrifugal mechanism 20 is disposed. The centrifugal clutch mechanism 5 is an arm member 52, 52 extending from the gj fixed side cylindrical portion 33 toward the outer periphery of the cover member 5 by a cover member 51 provided on the driven shaft 2A; and when the centrifugal force applied is increased For pivoting and splicing 138055.doc 200949105 The cap member 51 is composed of a counterweight 53, 53 for transmitting driving force, and the counterweight is 53, which is provided at the distal end of the arm members 52, 52 so as to be pivotable. A sleeve 54 having a compression spring 43 mounted thereon is mounted on the outer periphery of the movable side cylindrical portion 42. The sleeve 54 has a spring retainer 55 on its end facing the movable side umbrella portion 41. The spring retainer "projects in a hook shape toward the outside in the radial direction of the sleeve 54. The compression spring 43 is mounted on the outer periphery of the sleeve 54 so as to extend in the longitudinal direction of the driven shaft 21. Clearly, the compression spring 43 is mounted on the outer periphery of the sleeve 54 so as to be interposed between the spring holder 55 and the arm member brother 52 of the centrifugal clutch mechanism 5, and the movable pulley half 4 is continuously pushed to secure the pulley half. The direction of movement of 30. Since the other end of the compressed elastic material is fixed by the arm members 52, 52, a spring holder or a special member is not required to fix the other end thereof. Because the movable side cylindrical portion 42 is on the inner peripheral surface of # The projections 46, 46 projecting inward in the radial direction are provided, so that the movable side cylindrical portion 42 is mounted on the fixed side cylindrical portion 33 with a proper gap, as shown in Fig. 3. The cylindrical portion 33 is attached to the inner cylinder of the centrifugal mechanism 2 (). The fixed-side cylindrical portion 33 has a cam groove 58. The movable-side cylindrical portion 42 has a direction from the movable-side cylindrical portion 42 The material of the moving shaft 21 protrudes. The distal end portion 57 of the pin % It is connected to the inner cylinder 25 by the cam groove 58. The movable side cylindrical portion 42 is thus mechanically connected to the inner cylinder μ via the pin 56. "In addition to the solid compression spring 43, the sleeve 54 also prevents the pin % Due to the centrifugal force, it appears in the steering direction. As shown in Fig. 4, the cam groove 58 is angularly arranged to form a spiral in the cylindrical portion 33 on the fixed side 138055.doc 200949105. • When the movable pulley half 40 is When rotated by the arrow (1), the pin % 73 is guided by the cam groove 58. Therefore, the movable pulley half 40 is moved as indicated by the arrow (7). In other words, when the movable pulley half 4 is relatively solid - When the pulley pulley half 3G rotates at a speed exceeding the rotational speed of the fixed pulley half 3G, the movable pulley half 4G will move toward the m pulley half. The body 30 is moved, and the pin 56 is guided by the cam groove 58. Thereby, the force of fixing the belt by the fixed pulley half 30 and the movable pulley half 40 can be increased, and the belt can be prevented from slipping, for example, under rapid acceleration. This mechanism effectively utilizes the cam groove, and Torque cam Specifically, the torsion cam mechanism is composed of a cam groove 58 formed in the fixed side cylindrical portion 33 and a pin 56 extending from the movable side cylindrical portion 42. One of the features of the present invention is The cylinder 25 is mechanically coupled to the distal end portion 57 of the pin 56 that constitutes the torsional cam mechanism. φ In the embodiment of the invention, the distal end portion 57 of the pin 56 is coupled to the inner cylinder 25, the distal ends 57 can also be in contact with the inner cylinder 25. The operation of the driven pulley unit configured as a belt-drive stepless transmission as described above will be described next based on Fig. 5'; as shown in Fig. 5 'because of the diameter of the belt 16 During the high speed rotation of the driven pulley 15, the 'movable pulley half 40 is moved as indicated by the arrow (3). Then, the compression magazine 43 is compressed, and a large spring reaction force appears. The steel balls 23, 23 move to the outside in the radial direction as indicated by arrows (4) and (4) due to the increase in the rotational speed. The movable tilting disc 24 and the inner cylinder 25 are thereby moved as indicated by the arrow (5) by 138055.doc 200949105. This movement pushes the movable side cylinder 42 to the left side of the drawing via the pin %. Since this pressure and the reaction force of the compression spring 43 are opposite to each other, the -reduced reaction force acts on the side of the belt 16 and prevents the transmission efficiency of the belt transmission stepless transmission from being lowered. In the first embodiment, the compression spring 43 is provided at a position of the belt 16 at a position facing the centrifugal mechanism 20 provided for driving the wheel W - on the opposite side, as shown in Fig. 。. The compression spring 43 and the centrifugal mechanism 20 are disposed on the right or left side of the driven pulley unit 14, so that the amount of protrusion from the driven pulley unit tl14 can be reduced. Specifically, the size of the driven pulley unit 14 can be prevented from increasing on one side.

如圖2中所不，離心機構2〇的可移動傾斜圓盤24係經由 内圓筒25和銷56被連接至可移動側圓筒部42。因為内圓筒 25具有一小的直徑，所以亦可減小可移動傾斜圓盤24的内 徑和外徑之尺寸。明確言之，離心機構2〇的内徑D1之尺寸 可藉由經由銷56連接離心機構2〇至可移動側圓筒部42而被 減小。減小内徑D1也使減小離心機構2〇的外徑d2成為可 能，且易於使離心機構20小型化。 Q 此外，離心機構20係經由銷56和凸輪凹槽58被連接至銷 的遠端（遠端部分57)，·即如圖2中所示。現有的扭力凸輪機 構可在不修飾下作為銷56和凸輪凹槽58被利用。因而，可 減少用於連接離心機構20至可移動側圓筒部42的組件之數 · 量。 圖1中顯示的動力單元10適合一速克達型車輛，其中動 力單元10與驅動皮帶輪13—起上下樞轉。然而，本發明亦 138055.doc •10- 200949105 可被應用於一非拖轉動力留_ 刀早7L。此實例將基於圖6作為一 第二實施例被描述。相间去Μ上 u參考符號被用於指示與圖1中所 示的第—實施例之構件相同的構件，兹不再贅述。 (第二實施例）As shown in Fig. 2, the movable tilting disc 24 of the centrifugal mechanism 2 is coupled to the movable side cylindrical portion 42 via the inner cylinder 25 and the pin 56. Since the inner cylinder 25 has a small diameter, the inner diameter and the outer diameter of the movable inclined disk 24 can also be reduced. Specifically, the size of the inner diameter D1 of the centrifugal mechanism 2〇 can be reduced by connecting the centrifugal mechanism 2〇 to the movable-side cylindrical portion 42 via the pin 56. Reducing the inner diameter D1 also makes it possible to reduce the outer diameter d2 of the centrifugal mechanism 2〇, and it is easy to miniaturize the centrifugal mechanism 20. Further, the centrifugal mechanism 20 is coupled to the distal end (distal portion 57) of the pin via the pin 56 and the cam groove 58, as shown in Fig. 2. Existing torsion cam mechanisms can be utilized as pin 56 and cam groove 58 without modification. Thus, the number of components for connecting the centrifugal mechanism 20 to the movable side cylindrical portion 42 can be reduced. The power unit 10 shown in Fig. 1 is suitable for a one-speed keta type vehicle in which the power unit 10 pivots up and down with the drive pulley 13. However, the present invention is also applicable to 138055.doc •10-200949105 which can be applied to a non-draging force leaving _ knife 7L early. This example will be described based on Fig. 6 as a second embodiment. The reference numerals are used to indicate the same members as those of the first embodiment shown in Fig. 1, and will not be described again. (Second embodiment)

圖6顯示一非樞轉動力單元丨〇B Ο 本實施例不同於圖1中顯示 的第一實施例，不同點在於Figure 6 shows a non-pivoting force unit 丨〇B Ο This embodiment is different from the first embodiment shown in Figure 1, except that

從動鏈輪64被附接至— 動鏈65在兩個鏈輪62， 動鏈輪64、車輪軸63、 最終減速機構17的輸出軸61，一 驅動車輪W的車輪軸63，以及一驅 64之間和周圍延伸。驅動鏈65、從 及驅動車輪W在至圖式表面的後部 方向樞轉。因而，動力覃开 早tlIOB可被牢牢地附接至車體框 架。The driven sprocket 64 is attached to the kinetic chain 65 at the two sprocket wheels 62, the moving sprocket 64, the wheel axle 63, the output shaft 61 of the final reduction mechanism 17, a wheel axle 63 that drives the wheel W, and a drive Between 64 and around extending. The drive chain 65 pivots from and to the drive wheel W in the rearward direction to the surface of the figure. Thus, the power split early tlIOB can be firmly attached to the body frame.

在第一實施例中，非旋轉動力單元_可設於驅動車輪 W的前侧。壓縮彈簧43和離心離合器機構5q係設於圖式中 皮帶16的右側，且離心機構2〇和最終減速機構口設於圖式 中皮帶16的左側。自圖式可詳知，相對於在車輛寬度方向 之中央軸66，可具有一相似的右懸突和左懸突量L2。 中央軸66係通過驅動車輪w的中央。 第一和第二實施例是本發明應用於二輪車輛之實例，但 是本發明也可被應用於一三或四輪車輛，及應用於一通常 使用的車輛。 產業上之可利用性 本發明的動力單元對於二輪車輛尤其有用。 【圖式簡單說明】 138055.doc 11 200949105 圖1是顯示根據本發明之一第一實施例之一動力單元的 一示意圖； 圖2是沿著圖1的線2-2採取的一放大截面圖； 圖3是沿著圖2的線3-3採取的一截面圖； 圖4是圖2的一從動皮帶輪的一分解透視圖； 圖5顯示圖2中所示的該從動皮帶輪的一操作的一截面 圖；及 圖6顯示根據本發明之一第二實施例之一動力單元的一 示意圖。 【主要元件符號說明】 10 動力單元 10B 非柩轉動力單元 11 活塞 12 曲轴 13 驅動皮帶輪 14 從動皮帶輪單元 15 從動皮帶輪 16 皮帶 17 最終減速機構 18 動力單元罩 19 引擎 20 離心機構 21 從動軸 22 固定傾斜圓盤 138055.doc -12- 200949105 23 鋼珠 24 可動傾斜圓盤 25 内圓筒 26 滾針轴承 30 固定皮帶輪半體 31 固定側傘狀部 . 32 徑向軸承 33 固定側圓筒部 ^ 34 油封 40 可動皮帶輪半體 41 可移動側傘狀部 42 可移動側圓筒部 43 壓縮彈簧 44 油封 45 油封 ❹ 46 突出部 50 離心離合器機構 51 蓋構件 ' 52 臂構件 ' 53 配重 54 套筒 55 固定器 56 銷 57 遠端部 138055.doc -13- 200949105 58 凸輪凹槽 61 輸出軸 62 鏈輪 63 車輪軸 64 從動鏈輪 65 驅動鏈 66 中央軸In the first embodiment, the non-rotating power unit_ may be provided on the front side of the drive wheel W. The compression spring 43 and the centrifugal clutch mechanism 5q are attached to the right side of the belt 16 in the drawing, and the centrifugal mechanism 2〇 and the final reduction mechanism port are provided on the left side of the belt 16 in the drawing. As can be seen from the figure, a similar right overhang and left overhang amount L2 can be obtained with respect to the central axis 66 in the vehicle width direction. The central shaft 66 is driven through the center of the wheel w. The first and second embodiments are examples in which the present invention is applied to a two-wheeled vehicle, but the present invention can also be applied to a three- or four-wheeled vehicle and to a commonly used vehicle. Industrial Applicability The power unit of the present invention is particularly useful for two-wheeled vehicles. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a power unit according to a first embodiment of the present invention; FIG. 2 is an enlarged cross-sectional view taken along line 2-2 of FIG. Figure 3 is a cross-sectional view taken along line 3-3 of Figure 2; Figure 4 is an exploded perspective view of a driven pulley of Figure 2; Figure 5 shows one of the driven pulleys shown in Figure 2 A cross-sectional view of the operation; and Figure 6 shows a schematic view of a power unit in accordance with a second embodiment of the present invention. [Main component symbol description] 10 Power unit 10B Non-turning rotational force unit 11 Piston 12 Crankshaft 13 Drive pulley 14 Drive pulley unit 15 Drive pulley 16 Belt 17 Final reduction mechanism 18 Power unit cover 19 Engine 20 Centrifugal mechanism 21 Drive shaft 22 Fixed inclined disc 138055.doc -12- 200949105 23 Steel ball 24 Movable tilting disc 25 Inner cylinder 26 Needle bearing 30 Fixed pulley half 31 Fixed side umbrella. 32 Radial bearing 33 Fixed side cylinder ^ 34 oil seal 40 movable pulley half 41 movable side umbrella 42 movable side cylinder 43 compression spring 44 oil seal 45 oil seal 46 projection 50 centrifugal clutch mechanism 51 cover member '52 arm member' 53 counterweight 54 sleeve 55 holder 56 pin 57 distal end 138055.doc -13- 200949105 58 cam groove 61 output shaft 62 sprocket 63 wheel shaft 64 driven sprocket 65 drive chain 66 central shaft

138055.doc -14-138055.doc -14-

Claims (1)

200949105 七、申請專利範圍： l 一種用於一皮帶傳動無段變速器的動力單元，其包括： 驅動皮帶輪’來自一曲軸的一旋轉驅動力被傳送至 其上； -設於-從動軸上之從動皮帶輪，其將來自該曲軸之 旋轉驅動力傳送至— ^ 至驅動車輪，該從動皮帶輪係由被限 制不仵在該從動軸的一轴向上移動的一固定皮帶輪半體 及在a從動ϋ的該軸向上可移動的—可動皮帶輪半體所 組成； 皮帶其被對準在該驅動皮帶輪和該從動皮帶輪的 周圍； 推動構件，其用於朝向該固定皮帶輪半體推動該可動 皮帶輪半體；及 •離機構《根據該從動皮帶輪的一旋轉速度，用 於賦予-抵抗該推動構件的—推動力之推力至 帶輪半體， 、中該推動構件和该離心機構被配置成在該從動轴的 —軸向上分別地定位在該從動皮帶輪的相反側上。 2.如請求項1之動力單元，其中該可動皮帶輪半體包括用 :接觸該皮帶的一側之—表面的一可移動側傘狀部及在 X推動構件的—方向沿著該從動軸自該可移動側伞狀部 延伸的-可移動側圓筒部，且該離心機構被連接至該可 移動側圓筒部以藉此賦予-抵抗該推動構件的該推動力 之推力至該可動皮帶輪半體。 138055.doc 200949105 3.如請求項2之動力 早凡’其中該固定皮帶輪半體包括 於接觸該皮帶的一相蚪干遐匕括用 貝1之一表面的—固定側傘狀部， 及在該推動構件的方向沿著該從動轴自該时側伞狀部 延伸並具有長形孔形式凸輪㈣且容納在該可移動側圓 筒部的-固定側圓筒部’且藉由促使至少一銷自該可移 動側圓筒部至該從動軸的一外周邊表面突出並穿過該凸 輪凹槽且連接該銷的一遠端部至該離心機構，該固定皮 帶輪半體乃賦予一抵抗該推動構件的該推動力之推力至 該可動皮帶輪半體。 138055.doc200949105 VII. Patent application scope: l A power unit for a belt drive stepless transmission, comprising: a driving pulley 'a rotational driving force from a crankshaft is transmitted thereto; - a setting on the driven shaft a driven pulley that transmits a rotational driving force from the crankshaft to the drive wheel, the driven pulley being a fixed pulley half that is restrained from moving in an axial direction of the driven shaft a consisting of the axially movable, movable pulley half of the moving jaw; the belt being aligned around the drive pulley and the driven pulley; a pushing member for urging the fixed pulley half a movable pulley half; and an off mechanism "in accordance with a rotational speed of the driven pulley, a thrust force for imparting - resisting the pushing member to the pulley half body, wherein the pushing member and the centrifugal mechanism are Disposed on the opposite side of the driven pulley in the axial direction of the driven shaft. 2. The power unit of claim 1, wherein the movable sheave half comprises: a movable side umbrella portion contacting the side of the belt and a direction along the driven shaft of the X pushing member a movable side cylindrical portion extending from the movable side umbrella portion, and the centrifugal mechanism is coupled to the movable side cylindrical portion to thereby impart a thrust against the urging force of the urging member to the movable Pulley half. 138055.doc 200949105 3. The power of claim 2 is as follows: wherein the fixed pulley half body is included in a phase contact with the belt, the fixed side umbrella portion of the surface of one of the shells 1 is used, and a direction of the pushing member extending from the time-side umbrella portion along the driven shaft and having an elongated hole-shaped cam (four) and being accommodated in the - fixed-side cylindrical portion of the movable-side cylindrical portion and by causing at least a pin protruding from the movable side cylindrical portion to an outer peripheral surface of the driven shaft and passing through the cam groove and connecting a distal end portion of the pin to the centrifugal mechanism, the fixed pulley half body being given a The thrust of the urging force against the urging member is applied to the movable pulley half. 138055.doc
TW98103067A 2008-01-31 2009-01-23 Power unit TW200949105A (en)

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WO2017186222A1 (en) * 2016-04-27 2017-11-02 Schaeffler Technologies AG & Co. KG Continuously variable transmission
JP2019002518A (en) * 2017-06-16 2019-01-10 ジヤトコ株式会社 Torque cam device and belt-type continuously variable transmission
EP3721120B1 (en) * 2017-12-05 2023-01-25 Piaggio & C. SpA Continuous variation transmission device with adjustment device
US11732786B2 (en) * 2021-07-30 2023-08-22 Textron Innovations Inc. Continuously variable transmission having tunable acceleration and deceleration

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JPH08178004A (en) * 1994-12-27 1996-07-12 Suzuki Motor Corp V-belt type automatic transmission

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CN106662235A (en) * 2014-05-09 2017-05-10 自动变速器创新股份有限公司 Axial transmission system
CN106662235B (en) * 2014-05-09 2020-06-30 自动变速器创新股份有限公司 Axial transport system

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