201204597 六、發明說明： 【發明所屬之技術領域】 本發明是一種一體成型中空曲柄之結構及其製法，其 是與曲柄中空成型以及部份結構保持實心型態有關。一 【先前技術】 ，按自行車曾為我國主要工業之一，我國素有自行車王國之 稱近來因自行車休閒風氣的盛行’更使我國的自行車產業因而 進入=個興盛時期，自行車產業之廠家因應市場的需求，、投入 更大能量進行開發研究的工作，也由於自行車騎乘人口的增加， 消費者之需求更為多樣’ @此業者無不全相發出符合消費者需 求的產时”肖費者主要的訴求係在於自行車能夠更輕量化，結構 強度更高，成本更鱗，自行轄者無不努力躺此—方向^良 創新，因此’本發明人亦提出相M之曲柄之製法專利案，業 准’即為第娜騎號『自行車中空曲柄減重之製造方法』，主 要係改良習知之公告號為三四〇 — G三號「自行車用曲柄及其製 造方法」案’㈣習知先製成中找後充獻金屬融液中模禱 型之方法’改良成棒材鍛屋並成型出中空結構之製法，此—製法 係達成了曲柄高強度、重量再減重的目的；惟此—製法製成之曲 柄結構，係為-單純之長形中空柄狀結構，成型後，兩端 以鑽孔處理，贿與踏板以及五通料之零件組合成—體，由、σ 該曲柄於㈣時，受踩踏之力量時，除了踏板無柄接合處會= 201204597 力量集中點外’另於與自行車五通管内 及其配合零件結合處係為另一應力極大集中#五通吕軸以 該處產生不必要之破壞，故有改良之必要，^ 易於 柄於該處進行補強之作業，惟均無法克服該處因應== :問題，確實為業者目前針對該曲柄製造時極力想克服的課題 -欠研=有鏗於此’潛心研究並更深入構思，歷經多 =後’終於創作出一種一體成型中空曲柄之結構 【發明内容】 製法本-體成型中空*柄之結構及其 接合二===成曲柄與踏板 Λ 97貫以利後續成型出五通實心 ’不但可直接免除另外纽之手續，更可以直接成型之 結構取代另外裝配的結構’以更低的成本以及更高的強度 耐用性適用於目前的消費需求。 又 前述目的’本發明提供—種—體成對空曲柄之結構 及法，其中，製法部份係包括： 、棒材截取，打彎成L型後，將棒型基材之塑型端予以 初步塑型锻造出初步之外型，並由該_端之自由端予以 鑽孔成空心形態’製成凹形之空心、槽後，於該塑型端外部 予·以粗鍛中空成变於空心槽近塑型端之自由端處形成狹 201204597 口，再予以鑽孔灌注液體，將狹口 蹲成口從較大之灌201204597 VI. Description of the Invention: [Technical Field] The present invention relates to a structure of an integrally formed hollow crank and a method of manufacturing the same, which is related to the hollow molding of the crank and the partial solid structure of the structure. A [previous technique], bicycle has been one of the major industries in China. China is known as the bicycle kingdom. Recently, the bicycle leisure industry has become popular. The demand, the investment of more energy for development research, and the increase in the number of people riding bicycles, the demand for consumers is more diverse. @ @本业者All of the time to meet the needs of consumers in the production of time" The appeal is that the bicycle can be lighter, the structure is stronger, the cost is more scaled, and the self-regulators are all trying to lie here--the direction is good and innovative, so the inventor also proposed the patent law for the crank of M. The standard is the manufacturing method of the bicycle hollow crank weight reduction, which is mainly based on the improvement notice. The announcement number is “three-fourth 〇—G No. 3 “Bicycle crank and its manufacturing method” (4) After looking for a method of filling the molten metal in the mold, the method of improving the bar into a forged house and forming a hollow structure, this method is achieved. The purpose of the crank is high strength and weight is reduced. However, the crank structure made by the method is a simple long hollow handle structure. After forming, both ends are drilled, bribes and pedals and five links. The parts of the material are combined into a body, by, σ. When the crank is in (4), when the force is stepped on, except for the stalk joint of the pedal, it will be = 201204597 outside the power concentration point, and the joint with the bicycle five-way pipe and its matching parts The system is extremely concentrated. The Wutong Luan shaft has unnecessary damage, so there is a need for improvement. ^ It is easy to handle the reinforcement work there, but it cannot overcome the problem == : problem, It is indeed a problem that the industry is currently trying to overcome when manufacturing the crank. Under the research, there is a sneak peek into the research and deeper conceiving. After many times, it finally creates a structure of a one-piece hollow crank [invention] The structure of the body-formed hollow *handle and its joint two === into the crank and the pedal Λ 97 through to facilitate the subsequent forming of the five-way solid 'not only can directly remove the procedure of the new button, but also can directly form the structure Replacing the otherwise assembled structure' is more suitable for current consumer demand at lower cost and higher strength and durability. Further, the present invention provides a structure and a method for forming a pair of hollow cranks, wherein the method includes: cutting the bar, bending into an L shape, and applying the molded end of the rod substrate. The preliminary shape is forged into a preliminary shape, and the free end of the _ end is drilled into a hollow shape to form a hollow hollow, groove, and then external to the molded end. A narrow groove of 201204597 is formed at the free end of the hollow groove at the near end of the hollow groove, and then the liquid is bored and perforated into a mouth from a larger irrigation.
以方便液體由該灌口填充入該空心M 口，再行含液體細鍛成型，將該塑 9，並以封塞封住該灌 部之塑型，使該塑型端形成最終的形=之外邛再仃進行細 形狀結構，同時該封 因該空心槽内部壓力的關係而被拖山％ 了 θ到·暴 推出灌口’同時灌 密封，最後再鑽孔排放液體予以將空、、 雙化 以及中空曲柄柄 而達到製成預定製成五通實心軸之實、;之液體導出， 端結構之一體化曲柄目的者。 本發明之另 一〜•〜、W设供^ 結構，該曲柄係成L狀結構，其^ 體成型中空曲柄戈 五通實•另端則為該曲柄二：=: 心槽，外部塑型成柄部，以供設 、 中1二 、土 有踏板轴孔以供踏;te Φ 心軸穿置固定，而該塑型端與實心 、 藉該一體化之曲柄結構，實可 ㈣整體製作的成本，以及成型後該曲柄之實心端與塑 α接合處之結構強度高過於f知之結構的目的者。 【實施方式】 為使貝審查委員對本發明之目的、特徵及功效能夠有 更進-步之瞭解與認識’以下兹請配合【圖式簡單說明】 詳述如后： 本發明一體成型中空曲柄之結構及其製法，其中，該 201204597 一體成型中空曲柄的製法10係包括： 棒材截取11 :請配合第2圖所示，即視實際之需要，取 適當尺寸之實心棒形基材20，予以截成需要之長度備用； 打彎成L型12:將該基材20於適當之位置處折彎成L 型，以形成一較較短之實心端21以及與該實心端21垂直 且長度較長之塑型端22 ; 初步塑型鍛造13 :將棒型基材20之塑型端22予以初 φ 步塑型鍛造出初步之外型； 鑽孔成空心形態14:如第3圖所示，由該塑型端22 之自由端220予以鑽孔凹設成空心形態，製成凹形之空心 槽 221 ; 粗鍛中空成型15 :於該塑型端22外部予以粗鍛中空 成型，使該空心槽221近塑型端22之自由端220處形成狹 口 222 ; • 鑽孔灌注液體16 :再予以進行鑽孔灌注液體之程序， 即先將狹口 222鑽成口徑較大之灌孔223，以方便液體容 器30容置之液體31由該灌口 223填充入該空心槽221内， 使該空心槽221内之空間充滿該液體31後，並以一封塞 23封住該灌口 223，該封寨23係為一膠質彈性栓體，桿徑 略大於該灌口 223可彈性塞入該灌口 223並封住不漏液者； 含液體細鍛成型17 :如第4圖所示，將該塑型端22 之外部再行進行細部之塑型，使該塑型端22形成最終的形 201204597 狀該曲柄20之柄部201結構，同時該封塞23因該空心槽 221内部壓力的關係而被推出該灌口 223，同時該灌口 223 變形成密封狀，仍有該液體31被密封於該空心槽221内； 鑽孔排放液體18 :先於適當之位置處，鑽設有一洩孔 224，使該空心槽221與外部得以連通，而可將該空心槽 221内部之液體31導出； 再作後續之加工處理，以於該曲柄20之柄部201處非 該空心槽221位置處另設有一穿孔形態之踏板軸孔225， 以供踏板軸穿置固定；而於該實心端21之外徑處係經後續 之加工將外徑部份製成五通實心軸202(圖中未示），而達到 製成預定製成五通實心軸202之實心端21以及中空曲柄 20柄部201結構之一體化曲柄目的者。 本發明之結構係包括：該曲柄20係具有呈L型結構形 態之短長度的實心端21以及較長長度之塑型端22，該實 心端21與塑型端22係成相互垂直之形態，而且，該塑型 端22中央設有經鑽孔成空心形態14製成之空心槽221， 且整體外型係經初步塑型鍛造13、粗鍛中空成型15、鑽孔 灌注液體16、含液體細鍛成型17以及鑽孔排放液體18成 形出完整形狀之柄部201者。 藉該等製法以及由該製法製成之結構，實可達到以下 之功能與目的，包括： 1. 結構單純化：該一體化之曲柄結構，即可於棒形基 201204597 材20上先成型出呈L型之實心端21與塑型端 22，並於後續之加工而直接成型出該曲柄20之 柄部201以及五通實心軸202,使整體該曲柄 20結構有效的單純化，無需另外分別製作後， 再行組裝，而使該曲柄20與相關配合之零件均 可同時單純化，而降低組裝上之誤差者。 2. 降低整體製作的成本：即無需分別製作該柄部201 | 與該五通實心軸202後，再組裝，即可縮零件 組裝之流程，更可因而降低整體組裝與製作的 成本者。 3. 結構強度相對於習知組合結構為強：藉由該一體 化之結構，該成型後該曲柄20之實心端21與塑 型端22接合處係呈一體化之設計而非一組合之 結構，故整體之結構強度高過於習知之結構的目 • 的者 9 201204597 【圖式簡單說明】 第1圖 為本發明之製法流程示意圖。 第2圖 為本發明之棒材截取、打彎成L型以及初步塑型鍛 造之基材變形示意流程圖。 第3圖 為本發明之鑽孔成空心形態、粗鍛中空成型以及 鑽孔灌注液體等程序之基材變形示意圖。 第4圖 為本發明之含液體細鍛成型以及鑽孔排放液體程 序之基材變形示意圖。 【主要元件符號說明】 一體成型中空曲柄的製法10 棒材截取11 打彎成L型12 初步塑型鍛造13 鑽孔成空心形態14 粗鍛中空成型15 鑽孔灌注液體16 含液體細鍛成型17 鑽孔排放液體18 基材20 柄部201 五通實心轴202 實心端21 塑型端22 自由端220 空心槽221 狹口 222 灌孔223 洩孔224 踏板軸孔225 封塞23 液體容器30 液體31The liquid is filled into the hollow M mouth by the filling port, and then the liquid is finely forged, the plastic 9 is formed, and the molding of the filling portion is sealed by sealing, so that the molding end forms the final shape= In addition, the 邛 邛 仃 仃 仃 仃 仃 仃 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 细 , 细 细 细 细 细 细The double-handed and hollow crank shank achieves the purpose of making a solid five-way solid shaft; the liquid is led out, and the end structure is integrated. Another ~~~, W is provided for the structure of the present invention, the crank is formed into an L-shaped structure, and the hollow crank is formed by the hollow crank. The other end is the crank 2: =: the heart groove, the outer shape The handle is provided for the middle, the middle and the second, the soil has a pedal hole for the pedal; the te Φ mandrel is fixed by the piercing, and the molded end and the solid, by the integrated crank structure, can be (4) integrally made The cost, as well as the structural strength of the solid end of the crank and the plastic alpha joint after molding, is more than the purpose of the structure. [Embodiment] In order to enable the Beck Review Committee to have a more in-depth understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [detailed description of the drawings] as follows: The integrated hollow crank of the present invention The structure and the method for manufacturing the same, wherein the 201204597 integrally formed hollow crank manufacturing method 10 includes: Bar intercepting 11: Please cooperate with the second figure, that is, according to actual needs, take a solid rod-shaped substrate 20 of appropriate size, and Cut into the required length for use; bend into L-shaped 12: bend the substrate 20 at an appropriate position into an L-shape to form a shorter solid end 21 and perpendicular to the solid end 21 and longer in length Long plastic end 22; preliminary plastic forging 13: The plastic end 22 of the rod substrate 20 is forged into a preliminary shape by initial φ step; drilling into a hollow form 14: as shown in Fig. 3. The hollow end of the molded end 22 is hollowed out to form a hollow hollow groove 221; the rough forged hollow molding 15 is: rough forged and hollowed outside the molded end 22, so that The hollow groove 221 forms a slit at the free end 220 of the molded end 22 222 ; • Drilling liquid 16 : The procedure of drilling the liquid is further performed, that is, the slit 222 is first drilled into a hole 223 having a larger diameter to facilitate the liquid 31 contained in the liquid container 30 from the filling port 223 Filled into the hollow groove 221, the space in the hollow groove 221 is filled with the liquid 31, and the filling port 223 is sealed by a plug 23, which is a colloidal elastic plug body, the rod diameter is slightly More than the filling port 223 can be elastically inserted into the filling port 223 and sealed without leakage; liquid-containing fine forging molding 17: as shown in Fig. 4, the outer portion of the molding end 22 is further shaped The shaping end 22 is formed into a final shape 201204597 like the handle 201 structure of the crank 20, and the plug 23 is pushed out of the filling port 223 due to the internal pressure of the hollow groove 221, and the filling port 223 is changed. Forming a seal, the liquid 31 is still sealed in the hollow groove 221; the hole discharge liquid 18: a hole 224 is drilled in advance at a suitable position to allow the hollow groove 221 to communicate with the outside, but Leading the liquid 31 inside the hollow groove 221; and then performing subsequent processing to At the shank portion 201 of the crank 20, a pedal shaft hole 225 having a perforated shape is disposed at a position other than the hollow groove 221 for the pedal shaft to be fixed by the pedal shaft; and the outer diameter of the solid end portion 21 is subjected to subsequent processing. The diameter portion is formed into a five-way solid shaft 202 (not shown) to achieve the purpose of forming an integral crank of the solid end 21 of the five-way solid shaft 202 and the hollow crank 20 shank 201 structure. The structure of the present invention includes: the crank 20 has a short length solid end 21 in an L-shaped configuration and a longer-length molded end 22, and the solid end 21 and the molded end 22 are perpendicular to each other. Moreover, the central end of the molding end 22 is provided with a hollow groove 221 which is bored into a hollow shape 14 and the overall outer shape is subjected to preliminary plastic forging 13, rough forging hollow molding 15, drilling and pouring liquid 16, containing liquid The fine forging 17 and the borehole discharge liquid 18 form a fully shaped handle 201. By the method and the structure made by the method, the following functions and purposes can be achieved, including: 1. Structural simplification: the integrated crank structure can be formed on the rod-shaped base 201204597 20 The L-shaped solid end 21 and the molded end 22 are directly formed into the handle portion 201 of the crank 20 and the five-way solid shaft 202, so that the overall structure of the crank 20 is effectively simplified without additional distinction. After fabrication, assembly is performed, and the crank 20 and the associated components can be simultaneously simplified, and the assembly error is reduced. 2. Reduce the cost of the overall production: that is, it is not necessary to separately manufacture the handle 201 and the five-way solid shaft 202, and then reassemble, so that the assembly process can be reduced, and the cost of the overall assembly and production can be reduced. 3. The structural strength is strong relative to the conventional combined structure: by the integrated structure, the joint between the solid end 21 and the molded end 22 of the crank 20 after the forming is integrated rather than a combined structure Therefore, the overall structural strength is higher than that of the conventional structure. 201204597 [Simple description of the drawing] Fig. 1 is a schematic diagram of the manufacturing process of the present invention. Fig. 2 is a schematic flow chart showing the deformation of the substrate of the present invention by intercepting, bending and forming L-shaped and preliminary plastic forging. Fig. 3 is a schematic view showing the deformation of the substrate in the form of a hollow shape, a rough forging hollow molding, and a drilling liquid in the present invention. Fig. 4 is a schematic view showing the deformation of the substrate containing the liquid fine forging forming and drilling discharge liquid procedure of the present invention. [Main component symbol description] Method of integrally forming hollow crank 10 Bar intercepting 11 Bending into L-shaped 12 Preliminary shaping forging 13 Drilling into hollow form 14 Rough forging hollow molding 15 Drilling liquid 16 Liquid fine forging forming 17 Drilling and draining liquid 18 Substrate 20 Handle 201 Five-way solid shaft 202 Solid end 21 Plastic end 22 Free end 220 Hollow groove 221 Slot 222 Filling hole 223 Vent hole 224 Pedal shaft hole 225 Closure 23 Liquid container 30 Liquid 31