200922834 九、發明說明： 【發明所屬之技術領域】 本Ίχ明係種自行車曲柄中空結構’尤指一種使曲柄同時具 有易於製造、輕量化、良品率高之特別技術。 【先前技術】 我國公告431405號『自行車曲柄構造（二）』係揭示主框體及 田J框體係由一體成型後，再以深孔加工，於一端向另端至少挖設 一槽孔，其中該槽孔與槽孔之間各設有一補強肋，並於靠近頭部 後方位置設-開口，· 口另由蓋片覆蓋，再以焊接方式連結， 形成-内部巾空之完整曲柄，除可有效增進曲柄之錢外，並藉 此達成減輕重量之功效，同時降低生產成本。 另我國公告431405號『自行車曲柄構造(三）』係揭示曲柄柄 身之頭部與尾部係為-體成型之結構，再以深孔加工至少挖設一 槽孔’並於柄身之-側邊設有—開口，該開口另由—側蓋=, 再以焊接方式連結，形成—内部中空之完整曲柄，並藉此 輕重量之功效，同時降低生麵本；又，該柄細部另設有預定數 目之補強肋，使柄相部形翁靖孔，可纽增加柄身的強度， 延長主框體及副框體之壽命。 又 縱觀該兩前案有以下缺點： -、該深孔加工會出現加I不時财問題 操作者稍匆忙及粗心、不植、阵& . 又而符別左思 Μ '騎不穩或麟^孰 因此發生失誤率偏高狀況，導致加 :均合易 虚生不良。〇便需報廢，在 200922834 加工率容肢誤以致報廢率增加狀況，不但縮減生姐率，且材 料成本、工時成本無謂地減損是為業者很大損失，令業者十分困 擾。 二、其槽孔孔徑愈小、_設置數量❹，所造成之加工困 難度及成本便會大幅增加，时無法經㈣造之缺點。 ▲三、由於深孔加工具有相當之困難度，所以槽孔之孔徑也不 可能太小’間隔設置之數量也不可能太多，所以其減重效果仍有 改善之空間。 本發明人有鑒於此，乃及經多方試驗料，終成功發明出本 發明，以徹底解決上述兩前案所存在之問題。 【發明内容】 本發明係提供-種同時具有良品率高、易於製造、輕量化之 曲柄。 '其係以上、下對置之主框體及副框體所組成，魅、畐拖體 係以-體成贿成’主、雜紐表面積最大的表社、下對置， ^於該對置表面分別界定出狀之_，且令主,體之框槽 能彼此對合的封閉連接成—财空之曲柄結構。 由於框槽係直接於主、副框體成型製造而成，深度較淺而開 面，較大’所以較之上揭兩專利前案而言，可謂具有容易製造 及良品率高之優點，且減重及降低材料成本又更佳。 、 為使貴審查委員能進一步瞭解本發明之結構，特徵及其他 200922834 目的’玆附以較佳實施例之圖式詳細說明如后： 【實施方式j 0) 請參閱第一、二圖，·本發明係由可上、 及副框體（2 0)組成； 下對置之主框體200922834 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a hollow structure of a bicycle crank, particularly a special technique for making a crank easy to manufacture, lightweight, and high in yield. [Prior Art] China Announcement No. 431405 "Bicycle Crank Structure (II)" reveals that the main frame body and the field J frame system are integrally formed, and then processed by deep holes, and at least one slot is drilled at one end to the other end. A reinforcing rib is arranged between the slot and the slot, and is disposed near the back of the head. The port is covered by a cover sheet and then joined by welding to form a complete crank of the inner towel, which is effective. Increase the cost of the crank, and use this to achieve weight reduction, while reducing production costs. In addition, China's Announcement No. 431405 "Bicycle crank structure (3)" reveals that the head and tail of the crank handle are formed into a body-shaped structure, and at least a slot hole is drilled by deep hole processing and is on the side of the handle body. Provided with an opening, the opening is further connected by a side cover=, and then welded, forming a hollow inner complete crank, and thereby reducing the weight of the dough, and simultaneously reducing the dough; The predetermined number of reinforcing ribs makes the shank phase shape Wengjing hole, which can increase the strength of the handle body and prolong the life of the main frame body and the auxiliary frame body. Looking at the two previous cases, there are the following shortcomings: - The deep hole processing will appear to add I and the financial problems. The operator is a little hasty and careless, not planted, array & Therefore, the rate of error rate is high, resulting in the addition of: the average is easy to live poor. It will need to be scrapped. In 200922834, the processing rate is delayed and the scrap rate is increased. This not only reduces the birth rate, but also reduces the material cost and working hour cost. This is a great loss for the operators, which makes the operators very troubled. Second, the smaller the aperture of the slot, the smaller the number of _, the more difficult the processing and the cost will be greatly increased, and the shortcomings of (4) can not be achieved. ▲ Third, because the deep hole processing has considerable difficulty, the aperture of the slot can not be too small. The number of intervals can not be too much, so there is still room for improvement in the weight reduction effect. The present inventors have succeeded in inventing the present invention in view of the above, and the multi-party test materials, in order to completely solve the problems of the above two previous cases. SUMMARY OF THE INVENTION The present invention provides a crank having a high yield, easy manufacture, and weight reduction. 'The main frame and the sub-frame are composed of the upper and lower opposites, and the charm and the drag system are formed into a body with the largest surface area of the main and miscellaneous, and the opposite is opposite. The surface defines the shape of the shape, and the closed frame of the main body and the frame groove can be connected to each other into a crank structure of the financial. Since the frame groove is formed directly from the main and sub-frames, the depth is shallow and the surface is opened, which is larger. Therefore, compared with the previous patents, it has the advantages of easy manufacture and high yield, and Weight loss and lower material costs are better. In order to enable the reviewing committee to further understand the structure, features and other aspects of the present invention, the detailed description of the preferred embodiment is as follows: [Embodiment j 0) Please refer to the first and second figures, The invention consists of an upper and a sub-frame (20); the lower main frame
該主、副框體（1 〇 )( 屬材料..等等任—材料…=鳥物料、碳纖維、金 才科一體成型而製成，主、副框體Π0) ^使表面積最大的表面（1 1)( 2 1)上、下對詈，、： (22)， 2D分別界定出—凹入之框槽（12) 體（2 0 ) _^體（1〇)之框槽（12 )形狀恰足可供副框 篮U 0)外周容置，並徒 框體（2Q)另—^ 框體（1Q)之表面（⑴與副 古週W 21〇)切齊的定位，藉由彼此緊配合、 同週波或點焊·.等等任— 0)之框槽（12) (2?Λ 主、副框體（1〇)(2 之曲柄結構； 2彼此對合的封閉連接成-體中空 3 ) ◦)於1緣預先成型有上下貫穿之栓孔（1 )則成型有與栓孔（13)對接之检孔座 穿.门^孔（13)及栓孔座（2 3)恰可供中天心軸安 裝，同理，其主框體（} π ^ , 亦可由锃孔（13)延設出與副框 體（2 0 )栓孔座（2 , )對接之权孔座（圖中未示）； 至於主框體（1％^ ^The main and sub-frames (1 〇) (genus material.. etc. - material... = bird material, carbon fiber, gold is formed by one body, the main and sub-frames Π 0) ^ the surface with the largest surface area ( 1 1) ( 2 1) Upper and lower facing 詈,,: (22), 2D respectively define the concave groove frame (12) body (2 0 ) _ ^ body (1 〇) frame groove (12) The shape is just enough for the sub-frame U 0) to be accommodated in the outer circumference, and the positioning of the frame (2Q) and the surface of the frame (1Q) ((1) and the sub-ancient W 21〇) are aligned with each other. Tight fit, same-cycle or spot weld, etc. - 0) frame groove (12) (2? Λ main and sub-frame (1〇) (2 crank structure; 2 closed joints with each other - Body hollow 3) ◦) Pre-formed with a bolt hole (1) that is vertically penetrated at the edge of the 1st hole, and a hole for the inspection of the hole with the bolt hole (13) is formed. The door hole (13) and the bolt hole seat (2 3) It can be used for the installation of the Zhongtian mandrel. Similarly, the main frame body (} π ^ can also be extended from the pupil (13) to the right socket of the sub-frame (20) bolting seat (2, ). (not shown); as for the main frame (1%^^
)於另一螭緣則預先成型有上下貫穿之鎖 孔〔1 4 )，而副框體「ο η、《，L 2 0)則成型有與鎖孔（14)對接之 鎖孔座（2 4)，該鎖孔r ί n & (14)及鎖孔座（2 4)恰可供踏板 200922834 組裝；同理，其主据稱r彳 框奶⑽“ 亦可由鎖孔（14)延設出與副 、：孔座（2 4 )對接之鎖孔座（圖中未示）。 =以上之結槪明得知本發明至少具有如下優點： 本么明主框體（1 0 )及副框體（2 0 )之框槽（丄2 ) 2 2)由於具有開、深度較淺之結構特色，所以相各利於 -體成顺，_術咖樣。 相遍 二、 承第—項所述，由於本發明_(12) (2 2)所呈 、深度較淺結構特色，使得本發明在成型製造時，其 旱目田利於控制至所需之尺寸，不容易有破壞結構性之 二=操作者猶勿忙及粗心、不慎、情緒不穩或技術不綱 热所造成的失誤率。 三、 本發明由於框槽（i 2) ( 2 2 )是分別凹設於 框體（1〇) (20)表面積最大的表面（11) (21)，足 以使所組衣之中空曲柄輕量化要求能制最輕的狀態。 須請另外參料三圖，錢本發明第二實_， 侧本發明主、副框體（1〇)(2〇)可於检孔（13)、 权孔座（2 3)之端緣環狀設置爪狀之齒盤座（i 5) (2 5 )， =座（1 5 ) ( 2 5 )外周_具有可ϋ接鐘之組裝孔（i ’而本發明於齒盤座（15) (25)對合面亦具 曰1 2) ( 2 2)，如此便能使該等具齒盤座（15) (2 5)之曲柄重量較習用結構更形減輕。 200922834 須明參看第四〜五圖，其係說明本發明主框體（i 〇)可於 框槽（1 2 )内之封_延伸有可夾合於副框體（2 Q )框槽（2 2 )内側之鮮部（1 7 )’用以強化主、副框體（丄◦ ) ( 2 〇 ) 結合之結構強度，而此夾掣部（1 7 )之長、短或雜只須不造 成主、副框體（10)(2 0)之干涉配合即可。 請配合第六醜之’錢本發㈣五實補，主要說明主、 副框體（10) (20)之框槽（12) (22)形狀可為一致， 、使兩者之表面（1 1)(21)得以直接對接的結合成一體， 其亦屬本發明之等效發明。 月多第七九圖’其主要說明本發明可於副框體（2 〇 )之 框槽⑵、）中-體成型的連設有補強肋（2 7 )，此等補強肋（2 ^可形成如第七及八圖所示之矩形減重槽，或第九圖所示之蜂 巢形減重槽，具體㈣’轉減重槽形成可以任意幾何變化，只 ^使補強肋（2 7)能在符合減重要求下，仍具有效傳導運動力 里良好吸震性、強度佳之諸多優點，同理，主框體（工〇)之 框槽（1 2)中亦可—體成型的連設有補強肋（圖中未示），以便 強化對置後之曲柄框槽（1 2 )( 2 2 )_。至於第十圖則是更 進一步的說明本發_強肋（2 7)可以直接形成塊體的容置於 框槽（1 2)(2 2 )巾，並使栓孔座（2 3)及鎖孔座（2 4) ’、U框體（2 0 )分離而直接設置於該塊體巾，該實施例確與第 七〜九圖等效。 /、 200922834 如第十一、十二圖所示，本發明主、副框體（10) (2 〇) 可以相對設置之鎖孔（18)、鎖座（2 8)而提供螺拴（3 〇) 直接鎖接於鎖座（2 8)，以使該主、副框體（10)能彼此對 置的連接；至於第十三圖則是進一步的以螺栓（3 0 )及螺帽（3 1)所組成之扣件組而將主、副框體（1〇)彼此對置的連接。 综上所述，本發明在現有之此類結構之中可以說是前所未 見’該結構可使曲柄同時具有減重、降低製造困難度、增加良品 率之優點，故本發明較之習用結構更具有實質魏之增進，= 發明專利中請要件，爰依法提〜 昍夕—成 杈出肀5月。惟以上所述者，僅為本發 月之車父佳實施例而已，者兀处 士 σ分丄々 田+月匕以之限定本發明實施之範圍，卽 大凡依本發明申請專利範 侧即 發明涵蓋之範_。 作等變化與修飾1應仍屬本 200922834 【圖式簡單說明】 第一圖：係本發明之立體分解示意圖。 第二圖：係本發明之組合剖面示意圖。 第三圖··係本發明第二實施例示意圖。 第四圖：係本發明第三實施例示意圖。 第五圖：係本發明第四實施例示意圖。 第六圖：係本發明第五實施例示意圖。 第七圖：係本發明第六實施例示意圖。 第八圖：係本發明第七實施例示意圖。 第九圖：係本發明第八實施例示意圖。 第十圖：係本發明第九實施例示意圖。 第十一圖：係本發明第十實施例示意圖。 第十二圖：係本發明第十一實施例示意圖。 第十三圖：係本發明第十二實施例示意圖。 【主要元件符號說明】 (10)主框體 (12)框槽 (1 4)鎖孔 (16)組裝孔 (1 8)鎖孔 (11)表面 (13)栓孔 (15)齒盤座 (17)夾掣部 (2 0)副框體 （21)表面 200922834 (2i〇)另一表面 (2 3)栓孔座 (2 5)齒盤座 (2 7)補強肋 (3 0)螺栓 (2 2)框槽 (2 4)鎖孔座 (2 6)組裝孔 (2 8)鎖座 (31)螺帽The other side edge is pre-formed with a keyhole [1 4] penetrating up and down, and the sub-frame body "ο η, ", L 2 0) is formed with a keyhole seat that abuts the keyhole (14) (2 4), the lock hole r ί n & (14) and the keyhole seat (2 4) can be assembled for the pedal 200922834; similarly, the main body of the r彳 frame milk (10) can also be extended by the keyhole (14) Set the keyhole seat (not shown) that is connected to the sub-seat: hole seat (2 4 ). = The above conclusions show that the present invention has at least the following advantages: The frame slot (丄2) 2 2 of the main frame body (10) and the sub-frame body (20) is shallow and shallow. The structural features, so the phase is beneficial to the body into a smooth, _ surgery coffee. According to the above-mentioned item, as described in the item _(12) (2 2), the shallow depth of the structure, so that the invention is formed in the manufacturing process, the dry eye field is beneficial to control to the required size It is not easy to have the structural damage of the second = the operator is not busy and careless, careless, emotionally unstable or technically unskilled. 3. In the present invention, since the frame grooves (i 2) ( 2 2 ) are respectively recessed on the surface (11) (21) having the largest surface area of the frame (1〇) (20), it is sufficient to make the hollow crank of the assembled garment lightweight. It is required to be able to produce the lightest state. Please refer to the three drawings separately, the second invention of the invention, the side of the main and sub-frames (1〇) (2〇) of the invention can be used at the edge of the inspection hole (13) and the weight hole seat (23). Ring-shaped claw-shaped sprocket holder (i 5) (2 5 ), = seat (1 5 ) ( 2 5 ) outer circumference _ has assembly hole for splicing clock (i ' and the present invention is in the sprocket holder (15) (25) The joint surface also has 21 2) (2 2), so that the crank weight of the sprocket holders (15) (25) can be reduced more than the conventional structure. 200922834 shall be referred to the fourth to fifth figures, which illustrate that the main frame body (i 〇) of the present invention can be clamped to the sub-frame (2 Q ) frame slot in the frame slot (1 2 ). 2 2) The inner part of the fresh part (1 7 )' is used to strengthen the structural strength of the combination of the main and sub-frames (丄◦) (2 〇), and the length, shortness or miscellaneous of the jaw part (17) It does not cause interference between the main and sub-frames (10) (20). Please cooperate with the sixth ugly 'Qian Benfa (four) five real complement, mainly to explain the main and sub-frame (10) (20) frame groove (12) (22) shape can be consistent, so that the surface of the two (1 1) (21) is directly integrated into a single docking, which is also an equivalent invention of the present invention. More than the seventy-ninth figure of the month, which mainly illustrates that the present invention can be formed in the frame-shaped groove (2) of the sub-frame (2 、), and the reinforcing rib (2 7 ) is connected to the body, and the reinforcing ribs (2 ^ can be Forming a rectangular weight-reducing groove as shown in the seventh and eighth figures, or a honeycomb-shaped weight-reducing groove as shown in the ninth figure, the specific (4) 'transforming the weight-reducing groove can be arbitrarily geometrically changed, and only the reinforcing rib (2 7) Under the weight-reduction requirements, it still has the advantages of good shock absorption and good strength in the effective transmission movement force. Similarly, the frame groove (1 2) of the main frame body (work) can also be connected to the body shape. There are reinforcing ribs (not shown) to strengthen the opposite crank frame groove (1 2 ) ( 2 2 ) _. As for the tenth figure, it is further explained that the hair _ strong rib (2 7) can be directly The block body is placed in the frame groove (1 2) (2 2 ), and the bolt hole seat (23) and the keyhole seat (24) and the U frame body (20) are separated and directly disposed on This embodiment is equivalent to the seventh to ninth drawings. /, 200922834 As shown in the eleventh and twelfth drawings, the main and sub-frames (10) (2 〇) of the present invention can be relatively disposed. Keyhole (18), lock The seat (28) provides a thread (3 〇) directly locked to the lock seat (28) so that the main and sub-frames (10) can be connected to each other; the thirteenth plan is further The connection of the main and sub-frames (1〇) to each other by a fastener group consisting of a bolt (30) and a nut (31). In summary, the present invention is in the existing structure. It can be said that it is unprecedented. This structure can make the crank have the advantages of weight reduction, reduced manufacturing difficulty, and increased yield. Therefore, the present invention has more substantial improvement than the conventional structure. The essentials, 爰 提 〜 昍 昍 — — — 杈 杈 杈 — 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The scope of the invention, the scope of the patent application according to the invention is the scope of the invention. The variation and modification 1 should still belong to this 200922834 [Simplified description of the drawings] The first figure is a perspective exploded view of the present invention. Figure 2 is a schematic cross-sectional view of the combination of the present invention. The third figure is the second embodiment of the present invention. Fig. 4 is a schematic view showing a third embodiment of the present invention. Fig. 5 is a schematic view showing a fourth embodiment of the present invention. Fig. 6 is a view showing a fifth embodiment of the present invention. Fig. 11 is a schematic view showing a seventh embodiment of the present invention. Fig. 9 is a schematic view showing an eighth embodiment of the present invention. Fig. 11 is a schematic view showing a ninth embodiment of the present invention. Fig. 12 is a schematic view showing an eleventh embodiment of the present invention. Fig. 13 is a schematic view showing a twelfth embodiment of the present invention. [Description of main components] (10) Main frame ( 12) Frame groove (1 4) Lock hole (16) Assembly hole (1 8) Lock hole (11) Surface (13) Bolt hole (15) Cutter seat (17) Clamping part (20) Sub-frame ( 21) Surface 200922834 (2i〇) Another surface (2 3) Bolt hole seat (2 5) Cutter seat (2 7) Reinforcement rib (30) Bolt (2 2) Frame groove (2 4) Keyhole seat ( 2 6) Assemble the hole (2 8) lock seat (31) nut