1233969 玖、發明說明 【發明所屬之技術領域】 本發明是有關於一種 種具錐度非圓形螺旋齒輪 變逮傳動裝置，且特別是有 之變速傳動裝置。 關於一 【先前技術】 力方置：第6圖所示，可為液壓，氣壓，機械或電 =方式傳動’其形態可為等逮或變速傳動，以因應各種不同 機構或不同的需求來值决私 r……或作功。其中之變速傳動是比 車又複雜且難度頗尚的傳動機構，如連桿機構，㈣㈣4 度輪’差速機構，非圓形齒輪及可變節距之傳動機構等，分 別以不同直徑之轉盤及偏心量㈣—連桿，使從動件以一定 角度或來回往覆運動；或間歇傳動或使從動件作 出之調速傳動。 而各種不同形式的傳動裝置中，最為大家所熟悉的莫過 於齒輪傳動了！ ' 齒輪係-種相當常見之機械元件，藉由其上連續之齒部 可傳遞運動。-般’用於機構傳動結構之齒輪，係於齒輪本 體上設置多個齒部環繞於齒輪本體之周緣上。再將這些齒輪 予以排列後，利用相鄰齒輪之齒部與齒部的喃合，來達到； 動之目的。 由於齒輪係-種傳動效率極佳之傳動元件，且可透過齒 數之配合’達到變換角度或變換速度之效果，因此廣泛地項 用在各種機構之傳動結構上。 1233969 一般之傳動機構的變速方式，通常係利用改變齒輪等驅 動元件之有效驅動半徑，來達到變速之目的。當需要加速 時，便使用驅動輪大於被驅動輪之傳動組合；而當需要減速 時，則使用被驅動輪大於驅動輪之傳動組合。 其中之非圓形It輪之傳動裝置為一種可根據作功的不 同需氺形成在每一循環作動中可改變其速度比之齒輪傳動 機構，其最高速與最低速的波峰與波谷可為一循環一對，亦 可-循環兩對，更有三對，四對甚至五對者，形成不同峰速 頻率應付不同之需求！ 如公告第12643號（申請第78201747號）即提供了一種 非圓形齒輪裝置作為動力傳動媒介；另外，如公告第1346〇2 號（申請第78102022號）及如公告第154〇44號（申請第 79207426號）兩專利案亦有述及非圓形齒輪裝置。 上述之非圓形齒輪均為直齒狀之正齒輪；而直齒狀之正 齒輪作為動力傳遞，於作動時會產生高噪音高振動，傳遞之 線速度較不滑順。 【發明内容】 本發明之目的就是在提供一種具錐度非圓形螺旋齒4 之變速傳動裂置，具有至少一具錐度非圓形螺旋齒輪。由2 此具錐度非圓形螺旋齒輪之節曲線半徑會隨著轉動角度# 不同而改變，因此會使此傳動裝置達到變速之效果。 本發明之另一目的是在提供一種具錐度非圓形螺旋^ 輪之4速傳動裝置，主要係由兩個具錐度螺旋齒輪所組成 1233969 這兩個齒輪中至少有一個齒輪為非圓形。由於非圓形齒輪之 蟥半徑與齒輪轉動之角速度成反比關係，因此可運用齒輪之 節半徑與轉動角速度之間的關係，而根據實際應用之需求， 設計出具有所需傳動速度比之傳動裝置。 根據本發明之上述目的，提出一種具錐度非圓形螺旋齒 輪之麈速傳動裝置，至少包括：第__具錐度非圓形螺旋齒 輪’其中此第一具錐度非圓形螺旋齒輪至少包括複數個第一 齒部，且每一各第一齒部均具有第一螺旋角；以及一第二具 錐度非圓形螺旋齒輪’其中此第二具錐度非圓形螺旋齒輪^ 少包括複數個第二齒部，且每一個第二齒部均具有第二螺旋 角。其中’上述之第—具錐度非圓形螺旋齒輪之第—齒部鱼 第二具錐度非圓形螺旋齒輪之第二齒部交錯接合，且第一齒 部之第-螺旋角與第二齒部之第二螺㈣呈共_係。w A依照本發明一較佳實施例，上述之第-具錐度非圓形螺 旋回輪之輪廓與第二具錐度非圓形螺旋齒輪之輪廓相同。 【實施方式】 輪之變速傳動裝 可參照下列描述 本發明#露—帛具錐度非圓形螺旋齒 置。為了使本發明之敘述更加詳盡與完備， 並配合第1圖至第5b圖之圖示。 月多…、第1圖，第i圖係繪示兩非圓 輪⑽之節半徑r (=與齒左輪102之輪扉為非圓形，因在1 會隨著齒輪100之轉動角度 1233969 變，且齒輪102之節半控Γ2(02)也會隨著齒輪i〇2之轉動 角度0 2而改變。 此外，由於ΐ=ζ·12#常數，而且齒輪100之節 半徑rK0 〇與齒輪102之節半徑ο分別會隨著轉動角 度玟！以及轉動角度02而改變，因此造成齒輪1〇〇與齒輪 102之變速。其中，ω !代表齒輪1〇〇之旋轉速度，ω2代表 齒輪102之旋轉速度，而ί1:ζ則代表齒輪100與齒輪1〇2之 速度比。 請參照第2圖，第2圖係繪示依照本發明一較佳實施例 的一種具錐度三邊外形螺旋齒輪之變速傳動裝置的立體 圖。在此較佳實施例中，變速傳動裝置係由具錐度三邊外形 螺旋之齒輪200與具錐度三邊外形螺旋之齒輪202組立而 成。齒輪200之周緣上設置有複數個齒部2〇4，其中這此齒 部204具有相同之螺旋角。相同地，齒輪2〇2之Η4 、 〈周緣上亦設 置有複數個齒部206，且這些齒部206具有相同之螺旋角。 在本發明中，齒輪2〇〇之齒部2〇4的螺旋角與齒輪2⑽之告 部206的螺旋角不相等，且齒部2〇4之螺旋角與齒部2二 之螺旋角共軛。 、° 一請參照f 3a圖與帛3b圖，g 3a圖係繪示依照本發明1233969 发明 、 Explanation of the invention [Technical field to which the invention belongs] The present invention relates to a variable transmission device with a non-circular helical gear with a taper, and particularly a variable speed transmission device. About a [prior art] force square: shown in Figure 6, it can be hydraulic, pneumatic, mechanical or electrical = mode transmission. Its form can be equal or variable speed transmission, in order to respond to a variety of different mechanisms or different needs Decisive private r ... or work. Among them, the variable speed transmission is more complicated and difficult than the car, such as the link mechanism, ㈣㈣ 4 degree wheel 'differential mechanism, non-circular gears and variable pitch transmission mechanism, etc. Eccentricity ㈣-connecting rod, make the follower move at a certain angle or back and forth; or intermittent drive or speed control drive made by the follower. Among the various forms of transmission, the most familiar one is gear transmission! '' Gear train-a fairly common mechanical element that transmits motion by continuous teeth on it. -Generally, a gear for a mechanism transmission structure is provided on the gear body with a plurality of teeth provided around the periphery of the gear body. After arranging these gears, the teeth of adjacent gears and the coupling of the teeth are used to achieve the purpose of moving. Because the gear train is a transmission element with excellent transmission efficiency, and the effect of changing the angle or speed can be achieved through the cooperation of the number of teeth, it is widely used in the transmission structure of various mechanisms. 1233969 Generally, the speed change mode of the transmission mechanism is to change the effective driving radius of the driving elements such as gears to achieve the purpose of speed change. When acceleration is required, a transmission combination with a driving wheel larger than the driven wheel is used; when deceleration is required, a transmission combination with a driven wheel larger than the driven wheel is used. Among them, the transmission device of the non-circular It wheel is a gear transmission mechanism that can be formed in each cycle and can change its speed ratio according to different needs of work. The highest and lowest speed peaks and troughs can be one. Cycle one pair, also-cycle two pairs, there are three pairs, four pairs or even five pairs, forming different peak speed frequencies to meet different needs! Such as Announcement No. 12642 (Application No. 78201747), a non-circular gear device is provided as a power transmission medium; in addition, such as Announcement No. 1346〇2 (Application No. 78102022) and Announcement No. 154084 (Application No. 79207426) The two patent cases also mention non-circular gear devices. The non-circular gears mentioned above are all spur gears with straight teeth. The spur gears with straight teeth as power transmission will generate high noise and vibration during operation, and the linear speed of transmission is less smooth. SUMMARY OF THE INVENTION The object of the present invention is to provide a variable speed transmission split with a taper non-circular helical tooth 4 with at least one taper non-circular helical gear. From 2 the pitch curve radius of this tapered non-circular helical gear will change with the rotation angle #, so the transmission can achieve the effect of speed change. Another object of the present invention is to provide a 4-speed transmission device with a tapered non-circular spiral wheel, which is mainly composed of two tapered spiral gears. 1233969 At least one of the two gears is non-circular. Because the non-circular gear's radius is inversely proportional to the angular speed of the gear, the relationship between the pitch radius of the gear and the angular speed of the gear can be used. According to the needs of practical applications, a transmission device with the required transmission speed ratio can be designed. . According to the above object of the present invention, a high-speed transmission device with a tapered non-circular helical gear is provided, which includes at least: a __tapered non-circular helical gear 'wherein the first tapered non-circular helical gear includes at least a plurality First toothed portions, each of which has a first helix angle; and a second tapered non-circular helical gear 'wherein the second tapered non-circular helical gear ^ includes a plurality of first Two tooth portions, and each second tooth portion has a second helix angle. Among them, the above-mentioned first-tapered non-circular helical gear, the first-tooth portion of the fish, the second tapered non-circular helical gear, the second tooth portion is alternately engaged, and the first-helix angle of the first tooth portion and the second tooth The second snail of the ministry is in line. w A According to a preferred embodiment of the present invention, the profile of the first-tapered non-circular spiral wheel is the same as the profile of the second tapered non-circular spiral gear. [Embodiment] The variable speed transmission device of the wheel can refer to the following description. This invention # 露 — 帛 has a tapered non-circular spiral gear. In order to make the description of the present invention more detailed and complete, the illustrations of FIG. 1 to FIG. 5b are coordinated. More than one month ..., Figure 1, Figure i shows the radius r of the joints of two non-circular wheels 与 (= the wheels 齿 of the toothed left wheel 102 are non-circular, because at 1 it will change with the rotation angle 1233969 of the gear 100 And the half-control Γ2 (02) of the gear 102 will also change with the rotation angle 0 2 of the gear i 02. In addition, since ΐ = ζ · 12 # constant, and the pitch radius rK0 of the gear 100 and the gear 102 The pitch radius ο will change with the rotation angle 玟! And the rotation angle 02 respectively, thus causing the gear 100 and gear 102 to change speed. Among them, ω! Represents the rotation speed of gear 100 and ω2 represents the rotation of gear 102 Speed, and 1: 1 represents the speed ratio of gear 100 to gear 102. Please refer to FIG. 2. FIG. 2 is a view showing a speed change of a tapered three-sided helical gear according to a preferred embodiment of the present invention. A perspective view of the transmission device. In this preferred embodiment, the variable speed transmission device is composed of a gear 200 having a tapered three-sided profile spiral and a gear 202 with a tapered three-sided outline spiral. A plurality of gears are provided on the periphery of the gear 200 Tooth section 204, wherein the tooth sections 204 have the same spiral Similarly, the gear 4 of the gear 200 is provided with a plurality of tooth portions 206 on the periphery, and the tooth portions 206 have the same spiral angle. In the present invention, the tooth portion 200 of the gear 200 The angle of helix is not equal to the angle of helix 206 of the gear 2 ，, and the helix angle of the tooth 204 is conjugate to the helix angle of the tooth 22 二. Please refer to f 3a and 帛 3b, g Figure 3a illustrates the invention
〜較佳實施例的一種具三邊外形齒輪之變速 X 立 Ί寻動組裝置的 =思圖，而第3b圖係繪示依照第3a圖之具三邊外形去衿 變速傳動裝置之傳動速度比與轉動角的關係圖。^兩之 〇r L· k弟3 a圖 』知，齒輪200與齒輪202均具有三角外形，r i 且齒輪200 1233969 之輪扉與齒輪202之輪廓相同。因此，齒輪與齒輪如 之節半徑均會因轉動而改變，而齒輪2〇〇與盘輪2〇2之間的 速度比也會因轉動而產生變化。齒輪與齒輪加間之速 度比與轉動角之間的關係如笫3h _抓- , 罘圖所不。由於齒輪2〇〇盥 齒輪202之輪廓均為已知，如此一办 ” 戈此來，齒輪200與齒輪2〇2 之節丰徑變化亦屬已知，因此可輕易推知齒輪2〇〇與齒輪 202間之傳動速度比變化。 本發明之一特徵在於本發明 十私/1 J建用菌輪之節半徑與轉 動角速度之間的關係，而根據實際庫用之 零灵丨不應用t需求，設計出具有 所需傳動比速度之傳動裝置。 〃 齒輪300之齒部的螺旋角與齒輪3〇2之齒部的螺旋角不等且 請參照第4a圖與第4b圖，第4a圖係綠示依照本發明 :較佳實施例的-種具四邊外形齒輪之變速傳動組裝置的 不意圖，而第4b圖則係繪示依照第4a圖之具四邊外形齒輪 之變速傳動裝置之傳動速度比與轉動角的關係圖。從第扣 圖可知，齒輪300與齒輪3()2均為具錐度螺旋齒輪，具有四 角外形’且齒輪300之輪廓與齒輪3〇2之輪廊相同。此外， 共軛。由於齒輪300與齒輪302具有非圓形之四角外形，因 此齒輪300與齒輪302之節半徑會隨著轉動角度的不同而改 變。如此一來，齒輪300與齒輪3〇2間之傳動速度比也會隨 著轉動角度的不同而改變，如第4b圖所示。由於，齒輪3〇〇 與齒輪3 02之輪廓均為已知，且齒輪3 〇〇與齒輪3 〇2之節半 徑變化亦屬已知。因此，齒輪3〇〇與齒輪3〇2間之傳動速度 比變化可輕易推知。 1233969 請參照第5a圖與第5b圖，宽ς 一較佳實關的-種具5L邊外形^圖係衫錢本發明· 示意圖，第5b圖係繪示依照第5 *之隻速傳動組装置的 、古你4 圖之具五邊外形齒輪之蠻 速傳動裝置之傳動速度比與轉動角 , 的關係圖0從第5a圖可 知，齒輪400與齒輪402均為具錐 ^ ^ 雏度螺旋齒輪，具有五角外 形’且齒輪400之輪廓與齒輪4〇2之私& ,Αη 之輪廓相同。其中，齒輪 ,r ^ 以之齒部的螺旋角不等且共 ^由於齒輪彻與齒輪術具有非M形之i^~ The preferred embodiment of a speed-changing X-shaft hunting group device with a three-side profile gear is illustrated in Figure 3b, and Figure 3b shows the transmission speed of the three-side profile de-sharp transmission device according to Figure 3a Diagram of ratio and rotation angle. ^ The two rr L · k brother 3 a picture 』As known, the gear 200 and the gear 202 have a triangular shape, and the wheel 扉 of the gear 200 1233969 and the gear 202 have the same contour. Therefore, the pitch radius of gears and gears will change due to rotation, and the speed ratio between gear 200 and disk wheel 200 will also change due to rotation. The relationship between the speed ratio between the gear and the gear plus the rotation angle is as shown in 笫 3h _ grab-, which is not shown in the figure. Since the outline of the gear 200 and the gear 202 are all known, so to do. ”Since then, the pitch and diameter changes of the gear 200 and the gear 200 are also known, so the gear 200 and the gear can be easily inferred. The transmission speed ratio varies between 202. One of the characteristics of the present invention is the relationship between the joint radius and the rotational angular velocity of the Shibu / 1 J built bacteria wheel, and according to the zero spirit of the actual library, the t requirement is not applied, Design a transmission device with the required transmission ratio speed. 的 The helix angle of the tooth portion of the gear 300 and the helix angle of the tooth portion of the gear 300 are different. Please refer to Figures 4a and 4b. Figure 4a is green. Shown in accordance with the present invention: the intention of the preferred embodiment-a variable speed transmission group device with a four-sided external shape gear, and Fig. 4b shows the transmission speed ratio of the variable speed transmission device with a four-sided external shape gear according to Fig. 4a The relationship diagram with the rotation angle. As can be seen from the buckle diagram, the gear 300 and the gear 3 () 2 are both tapered helical gears with a quadrangular shape, and the profile of the gear 300 is the same as the contour of the gear 302. In addition, the total Yoke. Because gear 300 and gear 302 have non-circular The shape of the four corners, so the pitch radius of gear 300 and gear 302 will change with the rotation angle. In this way, the transmission speed ratio between gear 300 and gear 302 will also change with the rotation angle. As shown in Figure 4b. Because the contours of Gear 300 and Gear 02 are both known, and the change in the pitch radius of Gear 300 and Gear 3.0 is also known. Therefore, Gear 300 and Gear 300 The change of the transmission speed ratio between the gears 302 can be easily inferred. 1233969 Please refer to Figures 5a and 5b, a better one-a shape with a 5L edge ^ Figure is a shirt of the present invention. Figure 5b shows the relationship between the transmission speed ratio and the angle of rotation of the very high-speed gear with a five-sided profile gear according to the 5th * speed-only gear unit. Figure 5a shows from Figure 5a, Gear 400 and gear 402 are both cone-shaped helical gears with a pentagonal shape, and the outline of gear 400 is the same as the outline of gears 402 and Αη. Among them, the gear, r ^ The helix angles are different and common ^ because the gears and gears have a non-M shape i ^
二輪_與齒㉟402之節半徑會隨著轉動角度的不同而改 皮。如此一來，齒輪400與齒輪4〇2 M 箪絲& & — 間之傳動速度比也會隨 著轉動角度的不同而改變，如第& 一 叙去认 交如弟5b圖所不。由於，齒輪400 與齒輪402之輪廓均為已知，也銶仲 也就代表齒輪400與齒輪402 之節半徑變化亦屬已知。因此，可輕易推 4〇2間之傳動速度比變化。 ”^輪 應该注意的一點是，雖狹上诚夕鲁# μ & ^ 雄”、、上述之實轭例中，構成變逮傳 裝置之兩齒輪的輪廓具有相同外形與尺寸，且這兩個齒輪 均為具錐度非圓形螺旋齒輪，然，本發明之變速傳動裝置^ 兩齒輪並不限於上述。本發明之變速傳動裝置之兩齒輪亦可 具有不同輪廟外形與不同尺寸，且亦可使用_個具錐度_ 形螺叙齒輪與一個具錐度螺旋齒輪之組合。舉例而言，本發 :之變速傳動裝置可為—個具錐度三角外形螺旋齒輪以^ Τ個具錐度圓形螺旋齒輪之組合、或一個具錐度四角外形螺 疑齒輪以及一個具錐度五角外形螺旋齒輪之組合等等。在本 毛明之變速傳動裝置中，特徵在於至少需使用一個具錐度非 1233969 圓^/累旋U1輪，而搭配之另—齒輪為具錐度螺旋齒輪，且此 搭配之齒輪的輪廓外形可為圓形或非圓形。 在本务明之變速傳動裝置中，兩搭配之具錐度螺旋齒輪 ，錐度可設計為同方向（即兩者之軸心、線交於—點），亦可設 汁為反方向之嚙合(即兩者之軸心線平行卜其次，兩只齒輪 之錐渡-定要相同’而錐度範圍則視兩軸交角及傳動動力大 來力以》又汁。另一方面，兩只齒輪之螺旋角則不相同。 由上述本發明較佳實施例可知’本發明之一優點就是因 為本發明之變速傳動裝置具有至少一具錐度非圓形螺旋齒 輪’而此具錐度非圓形螺旋齒輪之節曲線半 度的不同而改變。因此，订虻且0士 角 了輕易且有效率地使傳動裝置達 之變速的目的。 由上述本發明較佳實施例可知，本發明之又一優點就 因為本發明之變速傳動裝置係由兩個具錐度螺旋齒輪所 成’由於螺旋齒係接觸為由點到曲線，再由曲線到點之逐 變化的過程，因此傳動之接觸比大，潤滑性良好，傳動平穩 振動衝擊及噪音均較傳統非圓形直齒輪為小。 。The pitch radius of the second wheel and the gear 402 will change with the rotation angle. In this way, the transmission speed ratio between the gear 400 and the gear 402 M 箪 & & — will also change with the rotation angle, as described in the & . Since the profiles of the gear 400 and the gear 402 are both known, it is also known that the change in the pitch radius of the gear 400 and the gear 402 is also known. Therefore, the transmission speed ratio change between 402 can be easily pushed. It should be noted that, in the above example of real yoke, the outlines of the two gears constituting the variable transmission device have the same shape and size, and this Both gears are tapered non-circular helical gears. However, the variable speed transmission device of the present invention ^ The two gears are not limited to the above. The two gears of the variable speed transmission device of the present invention may also have different wheel temple shapes and different sizes, and a combination of _ one taper-shaped spiral gear and one taper helical gear may also be used. For example, the transmission of the present invention can be a combination of a tapered triangular profile helical gear with ^ T tapered circular helical gears, or a tapered quadrangular profile helical gear and a tapered pentagonal profile spiral Gear combinations and more. In this Maoming's variable speed transmission, it is characterized by using at least one non-1233969 round ^ / revolving U1 wheel, and the other is matched-the gear is a tapered helical gear, and the profile of the matched gear can be round Shaped or non-circular. In this variable speed transmission, the two matching helical gears with taper, the taper can be designed in the same direction (that is, the axis of the two, the line intersects at a point), or the opposite direction of the meshing (that is, two The axis of the two gears is parallel. Second, the cones of the two gears must be the same, and the taper range depends on the intersection of the two axes and the transmission power. The helix angles of the two gears are the same. According to the above-mentioned preferred embodiments of the present invention, one of the advantages of the present invention is that the variable speed transmission device of the present invention has at least one non-circular helical gear with a taper, and the pitch curve of the non-circular helical gear with a taper is half. It varies according to the degree of change. Therefore, the order and 0 shijiao has the purpose of easily and efficiently shifting the transmission. According to the above-mentioned preferred embodiments of the present invention, another advantage of the present invention is because of the advantages of the present invention. The variable speed transmission is made up of two tapered helical gears. Because the contact of the helical gear system is a process from point to curve and then from curve to point, the transmission has a large contact ratio and good lubricity. Stable vibration, shock and noise compared to conventional non-circular spur gear small.
由上述本發明較佳實施例可知，本發明之再一優點就) 因為本發明之變速傳動裝置係由兩個具錐度螺旋齒輪= 成，且這兩個齒輪中至少、有一個齒輪為非圓形，而非圓开㈠ 輪之節半徑會與齒輪轉動之角速度成反比關係。因此， 用齒輪之節半徑與轉動角速度之間的關係，並根據 之需求，精確設計出具有所需傳動速度比之變速傳動裝'置 雖然本發明已以一較佳實施例揭露如上，然其並非、用以 11 1233969 ，定本發明，任何熟習此技藝者，在不脫離本發明之精神和 範圍内’當可作各種之更動與潤飾，因此本發明之保護範圍q 當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 =第1圖係繪示兩非圓形齒輪之傳動示意圖。 一第2圖係繪示依照本發明一較佳實施例的一種具錐度 三邊外形螺旋齒輪之變速傳動裝置的立體圖。 第3a圖係繪示依照本發明一較佳實施例的一種具三邊 外形齒輪之變速傳動組裝置的示意圖。 第3b圖係繪示依照第3a圖之具三邊外形齒輪之變速傳 動裝置之傳動速度比與轉動角的關係圖。 第4a圖係繪示依照本發明一較佳實施例的一種具四邊 外形齒輪之變速傳動組裝置的示意圖。 第4b圖係繪示依照第4a圖之具四邊外形齒輪之變速傳 動裳置之傳動速度比與轉動角的關係圖。 第5a圖係繪示依照本發明一較佳實施例的一種具五邊 外形齒輪之變速傳動組裝置的示意圖。 第5b圖係繪示依照第5a圖之具五邊外形齒輪之變速傳 動裝置之傳動速度比與轉動角的關係圖。 第6圖係各式傳動系統圖。 【元件代表符號簡單說明】 1〇〇 :齒輪 1〇2 :齒輪 1233969 104 :轉動方向 200 :齒輪 204 :齒部 300 :齒輪 400 :齒輪 JK0 0 :節半徑 0 1 :轉動角度 106 :轉動方向 202 :齒輪 206 :齒部 302 :齒輪 402 :齒輪 r2(0 2) ··節半徑 0 2 :轉動角度It can be known from the above preferred embodiments of the present invention that another advantage of the present invention is that) because the variable speed transmission device of the present invention is composed of two tapered helical gears, and at least one of the two gears is non-circular The radius of the knot of the wheel is inversely proportional to the angular velocity of the gear. Therefore, the relationship between the pitch radius of the gears and the rotational angular velocity is used to accurately design a variable speed transmission device having a required transmission speed ratio. Although the present invention has been disclosed above in a preferred embodiment, its It is not intended to define the present invention by 11 1233969. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is the attached patent. The scope defined shall prevail. [Schematic description] = The first diagram is a schematic diagram of the transmission of two non-circular gears. A second view is a perspective view of a variable speed transmission device with a tapered three-sided externally shaped helical gear according to a preferred embodiment of the present invention. Fig. 3a is a schematic diagram showing a transmission device with a three-side profile gear according to a preferred embodiment of the present invention. Fig. 3b is a diagram showing the relationship between the transmission speed ratio and the rotation angle of the variable speed transmission device with a three-side profile gear according to Fig. 3a. Fig. 4a is a schematic diagram showing a variable-speed transmission group device with four-side profile gears according to a preferred embodiment of the present invention. Fig. 4b is a diagram showing the relationship between the transmission speed ratio and the rotation angle of the variable-speed transmission gear with a four-sided external gear according to Fig. 4a. Fig. 5a is a schematic diagram showing a variable-speed transmission group device having a five-sided external shape gear according to a preferred embodiment of the present invention. Fig. 5b is a diagram showing the relationship between the transmission speed ratio and the rotation angle of the variable-speed transmission device with a five-sided external shape gear according to Fig. 5a. Figure 6 is a diagram of various transmission systems. [Simplified description of component representative symbols] 100: gear 10: gear 1233969 104: rotation direction 200: gear 204: tooth 300: gear 400: gear JK0 0: pitch radius 0 1: rotation angle 106: rotation direction 202 : Gear 206: Tooth 302: Gear 402: Gear r2 (0 2) · Pitch radius 0 2: Rotation angle
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