1275501 九、發明說明： 【發明所屬之技術領域】 本發明係關於-種無段變速機構，尤指 輛引擎之無段變速機構。 、用於車 【先前技術】 t目前市售車輛之引擎中，其主要變速 ^亦即無段變剌可依照料轉速之高低而自動改變= 10 15 請參閱圖1係習知無段變速器之剖面圖，其中 無段變速器9,且此無段變速器9包括有一入力軸9二 動盤92、-滑動驅動盤93、複數個滚珠94、一 广 ^動盤96、-滑動傳動盤97、一傳動盤彈菁％、以及—1275501 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a stepless shifting mechanism, and more particularly to a stepless shifting mechanism of an engine. For the car [Prior Art] t In the engine of the currently commercially available vehicle, the main shifting speed, that is, the stepless change, can be automatically changed according to the level of the material speed = 10 15 Please refer to Figure 1 for the conventional stepless transmission. A sectional view, wherein the stepless transmission 9 includes an input shaft 9 and a movable plate 92, a sliding drive plate 93, a plurality of balls 94, a wide disk 96, a sliding drive plate 97, and a Drive disk%%, and -
Hr"，t中，入力轴91係，合至車輛引擎8並獲得旋 轉動力，驅動盤92與滑動驅動盤93均軸設於入力轴91上， =力軸91之旋轉會促使滚珠94以其離心力而 入力軸91作轴向移動；同樣的，傳動盤96與= ^動盤97均軸設於出力軸95上，且傳動盤彈簧觸以j ::頂推：動傳動盤97沿出力軸95作軸向移動；至於傳動 皮π 99則環繞於驅動盤92 . 、 滑動傳動盤97。 ⑽㈣盤93、傳動盤96、與 因二利用上述結構’車輛引擎8之旋轉動力可由入力 ==傳動皮帶99以無段變速方式傳遞 即改變半徑比’藉以達成無段變速之目的。 20 1275501 ^而，於上述無段變速器9中，需組設一摩擦式離合器 9〇,當車輛引擎8於怠速時，可藉由摩擦式離合器卯暫時切 斷（不傳遞）出力軸95之旋轉動力，使車輛引擎8之旋轉動力 中止，但是，前述摩擦式離合器90過於笨重，且成本過高， 5對於要求輕量化、降低成本之車輛引擎8設計而言，實非十 分理想。 ' 【發明内容】 ►本發明係可利用彈簧之彈性預力使無段變速器之滑動 10驅動盤沿無段變速器之入力軸作軸向滑動，促使無段變速 器之傳動皮帶與無段變速器之驅動盤之間、以及傳動皮帶 與滑動驅動盤之間產生一間隙，使其無法產生足夠的摩擦 力。因此，驅動盤與滑動驅動盤不會夾緊傳動皮帶，使傳 動皮帶沒有足夠的摩擦力產生旋轉，藉以取代傳統離合器 15 之功能。 詳而言之，本發明之無段變速機構包括一無段變速 丨 杰，此擦4又麦速為包括一入力軸、一驅動盤組、一出力軸、 一傳動盤組、以及一傳動皮帶，其中，傳動皮帶係環繞於 驅動盤組與傳動盤組，且驅動盤組包括一驅動盤、一滑動 20 驅動盤、以及複數個滾珠，傳動盤組包括一傳動盤、一滑 動傳動盤、以及一傳動盤彈簧。 此外，驅動盤組之驅動盤係同軸固設於入力軸上，驅 動盤組之滑動驅動盤係同軸滑設於入力軸上，傳動盤組之 1275501 傳動盤係同軸固設於出力轴上，傳動盤組之滑動傳動盤係 同軸滑設於出力軸上。 μ 另外，入力軸係耦合至一車輛引擎、並將車輛弓|擎之 旋轉動力經由傳動皮帶以無段變速方式傳遞至出力軸，且 5入力軸之旋轉促使複數個滾珠以其離心力而頂推滑動驅動 盤沿入力軸作軸向滑動，傳動盤彈簧係以其彈力而頂推滑 動傳動盤沿出力軸作軸向滑動。 ^ I 本卷月之特色在於上述之入力軸並包括有一彈簧，此 彈黃係同軸組設於入力軸上，且此彈簧具有一彈性預力其 a係使滑動驅動盤沿入力軸作軸向滑動，促使傳動皮帶與驅 動盤之間、以及傳動皮帶與滑動驅動盤之間產生一間隙。 ^因此，藉由彈簧之設計，其彈性預力可使滑動驅動盤 / 口入力軸作車由向滑自’並使傳動皮帶與驅動盤之㈤、以及 傳動皮帶與滑動驅動盤之間產生一間隙，故驅動盤與滑動 ^ .¾動盤不會夾緊傳動皮帶，使傳動皮帶沒有足夠的摩擦力 產^方疋轉亦即當車輛引擎於急速（轉速較低）時，車輛引擎 之旋:專動力可藉由前述間隙而產生中斷，如此可取代傳統 離Ο时之功犯，而使車輛引擎之重量可加以減少， 此降低成本。 稽 'Ο —上述之彈簣可夾設於動盤與滑動驅動盤之間，且此 弹黃係可軸向頂推滑動驅動盤沿人力軸作軸向滑動。 此外，上述之彈黃亦可夾設於滑動驅動盤之外側，且 此彈簧之其中一端係固設於入力軸上、另一端係固設於滑 1275501 動驅動盤上，因此’彈簧可軸向拉食滑動驅動盤沿入力轴 作軸向滑動。 【實施方式】％ 5 請參閱圖2係本發明第一較佳實施例之剖面圖，其中顯 示有一無段變速器1、以及一車輛引擎3，且車輛引擎3係轉 合至無段變速器1之入力軸11。 上述之無段變速器1除包括入力轴11之外，並包括_驅 動盤組101、一出力軸15、一傳動盤組102、以及一傳動皮 10帶19，其中，傳動皮帶19係環繞於驅動盤組1〇1與傳動盤組 102，且驅動盤組1〇1包括一驅動盤12、一滑動驅動盤13、 以及複數個滾珠14，傳動盤組102包括一傳動盤16、一滑動 傳動盤Π、以及一傳動盤彈簧18。 此外，驅動盤組101之驅動盤12係同軸固設於入力軸u 15上，驅動盤組101之滑動驅動盤13係同軸滑設於入力軸n 上，傳動盤組102之傳動盤ι6係同軸固設於出力轴15上，傳 動盤組102之滑動傳動盤π係同軸滑設於出力軸15上。 因此，當車輛引擎3耦合至無段變速器1之入力軸11 時，車輛引擎3之旋轉動力可傳遞至入力軸u、並再經由傳 20動皮帶19以無段變速方式傳遞至出力軸15。 亦即入力軸11於旋轉時，入力軸^之旋轉可促使滾珠 14以其離心力而頂推滑動駆動盤13沿入力軸i i作軸向滑 動，傳動盤彈簧18可以其彈力而頂推滑動傳動盤17沿出力 軸15作軸向滑動，使驅動盤12、滑動驅動盤a、傳動盤μ、 1275501 與滑動傳動盤17可夾緊傳動皮帶19，促使傳動皮帶19跟隨 旋轉，並使傳動皮帶19因轉速之不同而上下移動，藉以改 變驅動盤組101與傳動盤組102之間之半徑比，藉此達成無 段變速之目的。 5 上述無段變速器1之入力軸11並包括有一彈簧2,此彈 簧2係同軸組設於入力軸丨丨上，且此彈簧2具有一彈性預 力’其係使滑動驅動盤13沿入力軸11作軸向滑動，促使傳 動皮帶19與驅動盤12之間、以及傳動皮帶19與滑動驅動盤 13之間產生一間隙。 10 於本實施例中，上述之彈簧2係夾設於驅動盤12與滑動 驅動盤13之間，且彈簧2係軸向頂推滑動驅動盤13沿入力軸 11作轴向滑動。 詳而言之，藉由彈簣2之設計，當車輛引擎3於怠速（轉 速較低）時，滑動驅動盤13係會背向驅動盤12而於入力軸u 15 上滑移，促使滑動驅動盤13與驅動盤12之間之距離增加， 此時，彈簧2之彈性預力會再軸向頂推滑動驅動盤13背向驅 動盤12滑動’使滑動驅動盤13再背向驅動盤12滑動一距 離’故使得傳動皮帶19與驅動盤12之間、以及傳動皮帶19 與滑動驅動盤13之間即可產生一間隙，而藉由間隙之產 20 生驅動盤12與滑動驅動盤13即不會與傳動皮帶19之間產 生夾緊力量，故傳動皮帶19不會再跟隨驅動盤12與滑動驅 動盤13旋轉，亦即出力軸15可因此不會產生旋轉。 1275501 藉此，車輛引擎3之旋轉動力可藉由上述間隙而產生中 斷，如此可取代傳統離合器之功能，而使車輛引擎3之重量 可加以減少，並可藉此降低成本。 至於彈簧2之彈性預力可藉由一般機械設計而設計其 5 大小，而此力量之大小可使滑動驅動盤13再背向驅動盤12 滑動一距離，此機械設計知識為熟習該項技藝者可輕易得 知，於此不再贅述。 明參閱圖3係本發明第二較佳實施例之剖面圖，其主要 、、、。構^與上述第一較佳實施例相同，唯差別在於彈簧4係夾 1〇設於滑動驅動盤130之外側，且彈簧4之其中一端係固設於 ^力軸110上、另一端係固設於滑動驅動盤13〇上，因此彈 汽4係會軸向拉曳滑動驅動盤13〇沿入力軸^ 作軸向滑 動，而如此之設計亦可達成上述第一較佳實施例所述之各 種功效，亦即不論是伸張彈簧或壓縮彈簧等，皆可達成本 15 發明之目的與功效。 上述實施例僅係為了方便說明而舉例而已，本發明所 籲 i張之權利範圍自應以申請專利範圍所述為準，而非僅限 於上述實施例。 20 【圖式簡單說明】 圖1係習知無段變速器之剖面圖。 圖2係本發明第一較佳實施例之剖面圖。 圖3係本發明第二較佳實施例之剖面圖。 1275501 【主要元件符號說明】 無段變速器1 驅動盤組101 傳動盤組102 入力軸11 入力轴110 驅動盤12 滑動驅動盤13 滑動驅動盤130 滾珠14 5 出力軸15 傳動盤16 滑動傳動盤17 傳動盤彈簧18 傳動皮帶19 彈簧2 車輛引擎3 彈簧4 車輛引擎8 無段變速器9 摩擦式離合器90 入力軸91 驅動盤92 滑動驅動盤93 滾珠94 10 出力軸95 傳動盤96 滑動傳動盤97 傳動盤彈簣98 傳動皮帶99 11In Hr", t, the input shaft 91 is coupled to the vehicle engine 8 and obtains rotational power. The drive plate 92 and the slide drive plate 93 are both axially disposed on the input shaft 91. The rotation of the force shaft 91 causes the ball 94 to be driven by the ball 94. The centrifugal force is applied to the input shaft 91 for axial movement; likewise, the drive plate 96 and the = drive plate 97 are both axially disposed on the output shaft 95, and the drive disk spring is contacted with j: push: the drive plate 97 is along the output shaft 95 is axially moved; as for the transmission skin π 99, it surrounds the driving plate 92. The sliding transmission disk 97 is slid. (10) (4) The disk 93, the transmission disk 96, and the second structure utilizing the above-described structure 'rotary power of the vehicle engine 8 can be transmitted by the input force == the transmission belt 99 in the stepless shifting mode, that is, the radius ratio is changed' to achieve the purpose of stepless shifting. 20 1275501 ^ In the above-mentioned stepless transmission 9, a friction clutch 9 需 is required, and when the vehicle engine 8 is idling, the rotation of the output shaft 95 can be temporarily cut off (not transmitted) by the friction clutch 卯The power causes the rotational power of the vehicle engine 8 to be stopped. However, the friction clutch 90 is too heavy and costly, and it is not ideal for the design of the vehicle engine 8 that requires weight reduction and cost reduction. [Invention] ► The invention can utilize the elastic pre-force of the spring to make the sliding 10 drive disc of the stepless transmission axially slide along the input shaft of the stepless transmission, and promote the driving of the transmission belt and the stepless transmission of the stepless transmission. A gap is created between the discs and between the drive belt and the sliding drive disc so that it does not generate sufficient friction. Therefore, the drive plate and the slide drive plate do not clamp the drive belt, so that the drive belt does not have sufficient friction to generate rotation, thereby replacing the function of the conventional clutch 15. In detail, the stepless shifting mechanism of the present invention includes a stepless shifting gear, and the wiper 4 includes a power input shaft, a driving disk group, a power output shaft, a transmission disk group, and a transmission belt. The drive belt is surrounded by the drive disc set and the drive disc set, and the drive disc set includes a drive disc, a slide 20 drive disc, and a plurality of balls, the drive disc set including a drive disc, a slide drive disc, and A drive disc spring. In addition, the driving disk of the driving disk group is coaxially fixed on the input shaft, and the sliding driving disk of the driving disk group is coaxially slid on the input shaft, and the 1275501 driving disk of the driving disk group is coaxially fixed on the output shaft, and the transmission The sliding drive disc of the disc set is coaxially slidably disposed on the output shaft. In addition, the input shaft is coupled to a vehicle engine, and transmits the rotational power of the vehicle bow to the output shaft via the transmission belt in a stepless shifting manner, and the rotation of the 5 input shaft causes the plurality of balls to push with their centrifugal force. The sliding drive disc slides axially along the input shaft, and the drive disc spring is axially slid by the elastic force of the sliding drive disc along the output shaft. ^ I This month is characterized by the above-mentioned input shaft and includes a spring. The elastic yellow coaxial group is arranged on the input shaft, and the spring has an elastic pre-force. The a system makes the sliding drive plate axially along the input shaft. Sliding causes a gap between the drive belt and the drive plate, and between the drive belt and the slide drive plate. ^ Therefore, by the design of the spring, its elastic pre-force can make the sliding drive disc/porting force shaft as the vehicle from the sliding direction and make the transmission belt and the driving disc (5), and between the transmission belt and the sliding driving disc. Gap, so the drive plate and the sliding ^.3⁄4 moving plate will not clamp the drive belt, so that the drive belt does not have enough friction to produce a twist, that is, when the vehicle engine is at a rapid speed (low speed), the vehicle engine spins : The special power can be interrupted by the aforementioned gap, which can replace the traditional offense, so that the weight of the vehicle engine can be reduced, which reduces the cost. Ο 'Ο The above-mentioned magazine can be sandwiched between the movable plate and the sliding drive plate, and the elastic yellow system can axially push the sliding drive plate to slide axially along the human shaft. In addition, the above-mentioned elastic yellow may be disposed on the outer side of the sliding driving disc, and one end of the spring is fixed on the input shaft, and the other end is fixed on the sliding driving plate of the 1275501, so the spring can be axially The sliding drive disc is axially slid along the input shaft. [Embodiment] % FIG. 2 is a cross-sectional view showing a first embodiment of the present invention, in which a stepless transmission 1 and a vehicle engine 3 are shown, and the vehicle engine 3 is coupled to the stepless transmission 1 The input shaft 11 is inserted. The above-described stepless transmission 1 includes, in addition to the input shaft 11, and includes a driving disc group 101, a power output shaft 15, a transmission disc group 102, and a transmission belt 10 belt 19, wherein the transmission belt 19 is surrounded by the driving The disk assembly 1〇1 and the drive disk group 102, and the drive disk group 1〇1 includes a drive plate 12, a slide drive plate 13, and a plurality of balls 14. The drive plate group 102 includes a drive plate 16 and a sliding drive plate. Π, and a drive disc spring 18. In addition, the driving disk 12 of the driving disk group 101 is coaxially fixed on the input shaft u 15 , and the sliding driving disk 13 of the driving disk group 101 is coaxially slidably disposed on the input shaft n, and the driving plate 1 of the driving disk group 102 is coaxial. The sliding drive disc π of the transmission disc group 102 is coaxially slidably disposed on the output shaft 15 . Therefore, when the vehicle engine 3 is coupled to the input shaft 11 of the stepless transmission 1, the rotational power of the vehicle engine 3 can be transmitted to the input shaft u, and then transmitted to the output shaft 15 via the transmission belt 19 in a stepless shifting manner. That is, when the input shaft 11 is rotated, the rotation of the input shaft can cause the ball 14 to push the sliding plate 13 with its centrifugal force to slide axially along the input shaft ii. The drive disk spring 18 can push the sliding drive plate by its elastic force. 17 axially sliding along the output shaft 15, so that the driving disc 12, the sliding driving disc a, the driving disc μ, 1275501 and the sliding transmission disc 17 can clamp the transmission belt 19, causing the transmission belt 19 to follow the rotation, and the transmission belt 19 is caused by The rotation speed is changed up and down to change the radius ratio between the driving disc group 101 and the driving disc group 102, thereby achieving the purpose of stepless shifting. 5 The input shaft 11 of the above-mentioned stepless transmission 1 further includes a spring 2 which is coaxially disposed on the input shaft ,, and the spring 2 has an elastic pre-force which causes the sliding drive plate 13 to enter the force axis 11 axial sliding causes a gap to be created between the drive belt 19 and the drive plate 12, and between the drive belt 19 and the slide drive plate 13. In the present embodiment, the spring 2 is interposed between the driving plate 12 and the sliding driving plate 13, and the spring 2 axially pushes the sliding driving plate 13 to slide axially along the input shaft 11. In detail, with the design of the magazine 2, when the vehicle engine 3 is at idle speed (lower speed), the sliding drive disc 13 will slide away from the drive shaft 12 and on the input shaft u 15 to promote the sliding drive. The distance between the disk 13 and the driving plate 12 is increased. At this time, the elastic pre-stress of the spring 2 will axially push the sliding driving disk 13 to slide back toward the driving plate 12, so that the sliding driving disk 13 slides back toward the driving plate 12. A distance 'causes a gap between the drive belt 19 and the drive plate 12, and between the drive belt 19 and the slide drive plate 13, and the drive disk 12 and the slide drive plate 13 are produced by the gap. A clamping force is generated between the drive belt 19 and the drive belt 19, so that the drive belt 19 does not follow the drive disc 12 and the slide drive disc 13, that is, the output shaft 15 can thus not rotate. 1275501 Thereby, the rotational power of the vehicle engine 3 can be interrupted by the above-mentioned gap, so that the function of the conventional clutch can be replaced, and the weight of the vehicle engine 3 can be reduced, and the cost can be reduced thereby. As for the elastic preload of the spring 2, it can be designed to have a size of 5 by a general mechanical design, and the strength is such that the sliding drive disc 13 is further slid away from the driving disc 12 by a distance. This mechanical design knowledge is familiar to the skilled person. It can be easily learned and will not be described here. 3 is a cross-sectional view showing a second preferred embodiment of the present invention, mainly, , and . The structure is the same as the first preferred embodiment described above, except that the spring 4 clip 1 is disposed on the outer side of the slide driving disc 130, and one end of the spring 4 is fixed on the force shaft 110 and the other end is fastened. It is disposed on the sliding driving plate 13A, so that the projectile 4 axially pulls the sliding driving plate 13 and slides along the input shaft axially, and the design can also achieve the above-mentioned first preferred embodiment. Various functions, that is, whether it is a stretch spring or a compression spring, can achieve the purpose and effect of the invention. The above-described embodiments are merely examples for convenience of description, and the scope of the present invention is intended to be limited to the scope of the claims, and is not limited to the above embodiments. 20 [Simple description of the drawings] Fig. 1 is a cross-sectional view of a conventional stepless transmission. Figure 2 is a cross-sectional view showing a first preferred embodiment of the present invention. Figure 3 is a cross-sectional view showing a second preferred embodiment of the present invention. 1275501 [Description of main components] Stepless transmission 1 Drive disc set 101 Drive disc group 102 Input shaft 11 Input shaft 110 Drive disc 12 Slide drive disc 13 Sliding drive disc 130 Ball 14 5 Output shaft 15 Drive disc 16 Sliding drive disc 17 Drive Disc spring 18 drive belt 19 spring 2 vehicle engine 3 spring 4 vehicle engine 8 stepless transmission 9 friction clutch 90 input shaft 91 drive disc 92 sliding drive disc 93 ball 94 10 output shaft 95 drive disc 96 sliding drive disc 97 drive disc篑98 drive belt 99 11