495410 A7 _B7五、發明説明（1 ) 經濟部中央標準局員工消費合作社印製 本發明係提供自行車曲柄之製法，主要係以金屬材質 的二柄套配合纖維管結合為一體曲柄粗胚，而在置入模具 後，可經抽真空令樹脂在瞬間進入模具内滲入粗胚，精加 熱後成型為一曲柄成品。 5 工業科技的不斷進步，帶動各種產品功能之提升，而 讓消費者能獲得使用之便利，其中就自行車而言，雖然因 為機車之推出，致使自行車的消費市場一度逐漸萎縮，但 是在生活水準隨著所得提高，而愈加注重休閭活動之下， 加上騎乘自行車又能健身補充平時運動量之不足，配合Μ 10 自行車廠商不斷推出各種功能產品，已有更多的人購置自 行車使用。 就自行車之作動，乃係在踩壓踏板後，由連結的曲柄 驅動齒輪，而來帶動後輪旋轉，在早先自行車車架包刮曲 柄在内皆係Μ鐵材製成，但是由於鐵材重量較重，對騎者 15 來說就形成一負擔，在材料科技之進步下，乃也業者乃Μ 鋁材來取代鐵，雖然鋁材已能達到降低重量之目的，但是 就自行車整體而言仍嫌過重，因此高級的自行車，其售價 在每降低1公克下就能增加1 0美元，故又有業者改Κ複 合纖維材料作為製造之材料。 20 以複合材料製造時，故能有效的來降低重量，但是對 連接踏板及齒輪之曲柄元件來說，由於曲柄的一端頭需供 踏板之螺設，而另一端頭則係與齒輪相卡接，因此供給踏 板螺固一端頭需要車設螺牙，另供給齒輪卡接端頭就需具 備有較高的強度，然而若完全Κ複合纖維材料成型曲柄， 〜3 ~ ---------^-------IT----- (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） 83. 3.10,000 經濟部中央標準局員工消費合作社印製 495410 A7 B7 五、發明説明（2 ) 由於並無法作攻牙之加工，且其強度也較弱，而不適用於 製造曲柄，為此乃有業者開發出第86 1 02 1 98號「 自行車曲柄之製造方法」發明案，其主要係如圖一所示， 在一金屬構件1的周面包覆一層發泡體2,然後於外周再 5 包覆一層預浸樹脂的複合纖維材料3,並將其置入模具4 内，再Μ熱壓法令金屬構件1、發泡體2及複合纖維材料 3結合成型，而為一曲柄半成品，最後就該半成品進行鉸 孔、研磨、修補之修飾加工，就成為一曲柄成品。 前述發明案之製法，故已能較鋁材者減輕重量，並提 10 高強度及耐衝擊性，但是其主體之金屬構件仍為金屬材料 ，致所降低之重量仍為有限，同時無論是發泡體2或複合 纖維材料3之包覆，不但加工時非常繁瑣，且因曲柄係為 一弧狀，而導致發泡體2及複合纖維材料3在纏繞時容易 發生厚度不均勻之現象，因此在成型為半成品之後，其表 15 面係為一粗糙面，故遷必需要作適當的修補及大量的研磨 加工，是仍有待加Κ克服之必要。 發明人乃係為蓮動器材之專業製造商，在平時即不斷 的從事產品之研發，且已先後經鈞局核淮數十件專利在 案，有鑑於習知腳踏車之製法未達完善，乃Μ長年來之工 20 作經驗，積極的尋求改良之法，經一再的次驗及改進之後 終獲致本發明。 本發明之首要目的，乃在提供一種自行車曲柄之製法 ,藉將二柄頭先Κ碳纖維管套接連接，再於外周面套覆一 袖管後形成粗胚來置入模具，可在將模具抽真空後，令樹 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 83. 3.10,000 I · 裝 I I I 訂 I (請先閲讀背面之注意事項再填寫本頁) 495410 A7 B7 五、發明説明（ 3 10 脂由另端在瞬間進入模具滲入粗胚，而來K熱壓成型，並 經些微之研磨及攻牙後就可製出成品，可降低加工程序降 低成本，並能較大幅度的減輕成品之重量。 為使貴審查委員能更易於了解本發明之製法及所達 到之功效，茲配合圖式說明如后： (一） 圖式說明： 圖一係習用曲柄之製法示意圖。 圖二係本發明一較佳實施例之組件圖。 圖三係本發明一較佳實施例之組件結合圖。 圖四係本發明一較佳實施例之成型示意圖。 圖五係本發明一較佳實施例成品之立體圖。 (二） 圖號說明： 經濟部中央標準局員工消費合作社印製 1金屬構件 3複合纖維材料 15 5 1柄套 6碳纖維管 8模具 8 2管路 8 4閥體 20 2發泡體 4模具 5 2柄套 7袖管 8 1管路 8 3樹脂桶 9曲柄 首先請參閲圖二、三，本發明係以金羼材質製出二柄 5 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐） 83. 3.10,000 ---------4^ 裝------訂------ (請先閲讀背面之注意事項再填寫本頁) 495410 A7 ____B7__ _ 五、發明説明（4 ) 套51. 52,其中，柄套51具有一貫穿孔511,並 於内側延設一適當長度之凸塊5 1 2 ,又柄套5 2則係延 設一凸出之方形柱體521,同樣的亦於内側端延設一適 當長度之凸塊522，接著Μ預先成型之碳纖維管6利用 5 接著劑使與二柄套5 1 . 5 2相结合，然後於其外周面套 覆一袖管7 (該袖管係以複合纖維材料編織成型），而來 為一曲柄粗胚，並請配合圖四參閱，將該粗胚置入模具8 内，模具8 —端Κ管路8 1接至一真空機（此處不繪出） ,另端頭Κ管路82連接至一樹脂桶83,且在管路82 10 設一閥體84，成型時首先關閉管路82中之閥體84, 再打開真空機進行抽真空之動作，而使模具8内形成真空 ,則袖管7就會變成緊密束套之狀態，接著關閉真空機， 並打開閥體84,則在模具8内為真空狀態下，即令管路 82内的空氣以很快速度進入填補空間，在此迅速行進之 15 填補空氣帶動下，於樹脂桶8 3内的樹脂即在瞬間被空氣 帶進模具内，並使樹脂於瞬間滲入粗胚，再經加熱就成型 為半成品，然後再進行攻牙、研磨及塗裝，而完成如圖五 所示之曲柄9成品。 經濟部中央標準局員工消費合作社印製 本發明之功效在於，由於整支曲柄9僅二端頭的柄套 20 5 1 . 5 2係為金屬材質，因此與該第8 6 1 0 2 1 9 8 號專利相較，本發明之曲柄能夠更為大幅的降低重量， 且熱壓成型前之組裝加工，在碳纖維管5 6及袖管7皆係 預先編織成型之下，僅需作套接之動作即可完成，而不必 作繁瑣之包覆纏繞動作，且因係預先成型管狀，因此管體 〜g〜 83. 3.10,000 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 495410 A7 _B7 五、發明説明（5 ) 各個部位之厚度都非常平均，並藉此而使成型之半成品表 面已為一較光滑面，則在對曲柄51的貫穿孔511加Μ 攻牙後，只要略加研磨就能令表面非常光滑，而能在塗裝 後完成曲柄之加工，來減少半成品後續之修飾加工程序， 5 亦能降低製造成本。 綜上所述，本發明之製法並未見於市面上，且確已能 增進使用的功效，達到產業上的利用性，應已符合發明專 利之要件，爰依法提出申請，懇請貴審查委員之詳鑑， 祈賜為淮予專利之審定，至感德便。 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 83. 3.10,000495410 A7 _B7 V. Description of the invention (1) Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. This invention is a method for manufacturing bicycle cranks, which is mainly composed of a two-piece metal sleeve and a fiber tube. After being placed in the mold, the vacuum can be used to make the resin instantly penetrate into the mold and penetrate into the rough embryo. After heating, it can be formed into a crank product. 5 The continuous advancement of industrial technology drives the improvement of various product functions and allows consumers to enjoy the convenience. Among bicycles, although the consumer market for bicycles gradually shrank because of the introduction of motorcycles, With the increase in income, more and more emphasis on rest activities, coupled with the ability to ride a bicycle to supplement the lack of exercise, and with the continuous introduction of various functional products by M 10 bicycle manufacturers, more people have purchased bicycles. The movement of the bicycle is after the pedal is depressed, the gear is driven by the connected crank to drive the rear wheel to rotate. In the previous bicycle frame, the crank was made of M iron, but due to the weight of the iron Heavier, a burden for the rider 15. Under the advancement of material technology, the industry has replaced aluminum with aluminum. Although aluminum has been able to achieve the purpose of reducing weight, it is still a bicycle as a whole. It is too heavy, so the price of high-end bicycles can increase by 10 dollars for each 1 gram drop. Therefore, some manufacturers have changed KK composite fiber materials as manufacturing materials. 20 When made of composite materials, it can effectively reduce weight, but for crank elements connecting pedals and gears, because one end of the crank needs to be provided with the screw of the pedal, and the other end is engaged with the gear Therefore, it is necessary to provide a screw for the screw end of the pedal and a high strength for the gear clip terminal. However, if the crank is completely made of composite fiber material, ~ 3 ~ ------- -^ ------- IT ----- (Please read the notes on the back before filling out this page) This paper size applies to China National Standard (CNS) Α4 specification (210 × 297 mm) 83. 3.10, 000 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 495410 A7 B7 V. Description of the invention (2) As it cannot be used for tapping, and its strength is also weak, it is not suitable for manufacturing cranks. Therefore, it has been developed by industry players The invention of No. 86 1 02 1 98 "Method for Manufacturing Bicycle Crank" is mainly shown in Fig. 1. A layer of foam 2 is coated on the peripheral surface of a metal member 1, and then 5 is coated on the outer periphery. A layer of prepreg resin composite fiber material 3 and put it into the mold 4 , Then Μ Act hot metal member 1, the foam material 2 and 3 in conjunction with molded composite fiber, and a crank for the semi-final semi-finished product is modified in relation to reaming, grinding, machining of repair, become a finished crank. The manufacturing method of the aforementioned invention case can reduce the weight compared with those of aluminum, and improve the strength and impact resistance. However, the main metal components are still metal materials, so the reduced weight is still limited. The coating of the foam body 2 or the composite fiber material 3 is not only very cumbersome during processing, but also because the crank is arc-shaped, which results in the uneven thickness of the foam body 2 and the composite fiber material 3 when winding, so After forming into a semi-finished product, its surface 15 is a rough surface, so it must be properly repaired and a large number of grinding processes, which is still necessary to be overcome by adding K. The inventor is a professional manufacturer of lotus motion equipment. He has been engaged in product research and development in peacetime, and has already filed dozens of patents under the approval of the Jun Bureau. In view of the fact that the manufacturing method of the conventional bicycle is not perfect, Through years of work and experience in work, M has actively sought for improvements. After repeated tests and improvements, the invention has finally been achieved. The primary object of the present invention is to provide a method for manufacturing a bicycle crank. The carbon fiber tube is sleeved and connected to the two handle heads, and then a sleeve is formed on the outer surface to form a rough embryo to be inserted into the mold. The mold can be evacuated. Later, make the paper size of the tree applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 83. 3.10,000 I · Pack III Order I (please read the notes on the back before filling this page) 495410 A7 B7 V. Description of the invention (3 10 The grease enters the mold from the other end to infiltrate the rough embryo in an instant, and comes from K hot-press molding, and after a little grinding and tapping, the finished product can be produced. In order to make it easier for your reviewers to understand the manufacturing method of the present invention and the effect achieved, here are the explanations with the drawings as follows: (1) Schematic description: Figure 1 is a schematic diagram of the conventional crank manufacturing method. Figure 2 is a component diagram of a preferred embodiment of the present invention. Figure 3 is a component combination diagram of a preferred embodiment of the present invention. Figure 4 is a schematic diagram of a preferred embodiment of the present invention. Figure 5 is a comparative diagram of the present invention. (2) Drawing number description: Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 1 Metal member 3 Composite fiber material 15 5 1 Sleeve 6 Carbon fiber tube 8 Mold 8 2 Pipe 8 8 Valve body 20 2 Foam 4 Mould 5 2 Sleeve 7 Sleeve 8 1 Pipe 8 3 Resin Bucket 9 Crank First please refer to Figures 2 and 3. The present invention is made of golden handle with 2 handles 5 This paper size applies to Chinese national standards (CNS) Α4 Specification (210X297mm) 83. 3.10,000 --------- 4 ^ Pack ------ Order ------ (Please read the notes on the back before filling (This page) 495410 A7 ____B7__ _ V. Description of the invention (4) A sleeve 51. 52, wherein the handle sleeve 51 has a through hole 511, and a convex piece 5 1 2 of an appropriate length is extended on the inside, and the handle sleeve 5 2 A convex square cylinder 521 is extended, and a convex block 522 of an appropriate length is also extended at the inner end, followed by a pre-molded carbon fiber tube 6 using 5 adhesive agent and two handle sleeves 5 1. 5 2 Combined, and then covered with a sleeve 7 (the sleeve is woven with composite fiber material) on the outer peripheral surface, which is a thick crank embryo, and please refer to Figure 4 For reference, the rough embryo is placed in a mold 8. The mold 8-end K pipeline 81 is connected to a vacuum machine (not shown here), and the other end K pipeline 82 is connected to a resin bucket 83, and The pipeline 82 10 is provided with a valve body 84. When molding, the valve body 84 in the pipeline 82 is first closed, and then the vacuum machine is opened to perform a vacuuming action, so as to form a vacuum in the mold 8, the sleeve 7 will become a tight bundle. State, and then close the vacuum machine and open the valve body 84, then in the mold 8 is in a vacuum state, that is, the air in the pipeline 82 enters the filling space at a fast speed, driven by the rapid filling air 15, The resin in the resin bucket 83 is immediately brought into the mold by the air, and the resin instantly penetrates into the rough embryo. It is then heated to form a semi-finished product, and then tapped, ground, and painted to complete the figure. Five finished cranks 9 shown. The effect of the invention printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs is that since the entire crank 9 has only the two-end shank cover 20 5 1. 5 2 is made of metal, it is the same as the 8 6 1 0 2 1 9 Compared with the patent No.8, the crank of the present invention can reduce weight significantly, and the assembly process before hot-press forming, under the carbon fiber tube 56 and the sleeve tube 7 are all pre-woven and formed, only need to be sleeved It can be completed without having to perform complicated wrapping and winding movements, and because the tube is pre-formed into a tube, the tube body is ~ g ~ 83. 3.10,000 (Please read the precautions on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) 495410 A7 _B7 V. Description of the invention (5) The thickness of each part is very even, so that the surface of the semi-finished product that has been formed has a smooth surface, then the crank After 51 through-holes 511 plus M tapping, only a little grinding can make the surface very smooth, and the crank can be processed after painting to reduce the subsequent modification process of the semi-finished product. 5 It can also reduce manufacturing costs. To sum up, the manufacturing method of the present invention has not been found in the market, and it has indeed been able to enhance the use effect and achieve industrial applicability. It should have met the requirements of the invention patent, and filed an application according to the law. Jian, pray for the examination of the patent granted by Huai, to the utmost virtue. (Please read the precautions on the back before filling this page) Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs This paper is sized for China National Standard (CNS) A4 (210X297 mm) 83. 3.10,000