〇96l6 九、發明說明： 【發明所屬之技術領域] 本發明主要係揭示一種曲柄結構與其製造方法 ^人體筋骨結構原理，所研製的—種創新製程，並能發 揮預期的強度與輕量化性能之「筋骨結構式之碳纖唯複^ 自行車曲柄及其妓」。 議維後材 .【先前技術】 •按’運動H材乃人之手足延長線的—部份 器:的使用’達到遊玩的目的，而運動器材，是「:運: 玩」之間的界面。良好的運動 便捷的使用感，更要具有能發捏碁士 要顧及舒適、 高性能6V重無料 揮功能的夢想。而對於 乂此的運㈣材，莫過於使用複合材 合材料的運動器材，除了器材 ㊉回度月匕複 良好的手:::::身_用品質’也要顧到 戶申訴信用品質或縣手感性能品f的情事發:致構成客 觀之傳統之自行車曲柄，主要係以 ==:.金，金。由於全金屬材= 料制士 4達到輕置化的訴求，之後就有使用非金屈材 / 柄設計’例如使用碳纖維複合材料者。 有—為一種具有紹蕊之曲柄結構90，其包括 =體，及設於該金屬板條_二端的金屬 外表再屬板條體901及該：金相朦、卿 “有一複合材料904，藉此構成-曲柄結構 1309616 9〇相較於傳統全金相柄之結 _ 之效果，但由於其曲柄結構9()内仍且有^ 化 條體_，為-略重之結構，故在輕金屬板 改善的空間。 I里化之故叶上仍然有 有-=二==:r柄結構91，其包括 911 -姓八e，壯成尽板狀"砲本體911，該發泡本體 ，設有-金屬帽912、913’且該發泡本體9ιι 跑^帽912、⑽外料—體包賴有—複合材料 銘蕊而略重的問題。 b種叹权善了别述利用 參照圖十，為一種空心曲柄92之結構， 内放係於該第，複合材923 Ά足蓰产代 1 — 後再於該第一帶狀複合材923 924，λ #日 气向辰繞第二帶狀複合材 m 並於尼龍氣袋925中灌入高I氣體， 而使該些帶狀複合材923、924硬化成型。由於氣 W須有入風口’成型後，留於曲柄 響結構強度，生產不易操控外，並且粗胚完成後，殘= 口洞运需額外填補材料美化外觀，此製程雖達到中空目 的’但隨之產生的製造困難’結構破洞，城增善後處理， 確有改善空間。 此種空心曲柄92的設計相較於前述之習用結構，更可 有效的達到輕量化的效果’但缺點在於其利用吹氣方式製 1309616 成，故空心曲柄9 2每一部位的壁厚無法控制到完全一樣之 尺寸’容易產生不良品，尤其吹氣口造成的事前結構包覆 困難’成型後的出口漏洞，進而影響結構強度，造成產品 容易不良之缺點。 『有鑑於上述習知結構之缺失，本發明人乃發明出一種 『筋骨結構式之碳纖維複材自行車_及其製造方法』， 其係可克服上述習知結構之所有缺點。〇96l6 IX. Description of the invention: [Technical field to which the invention pertains] The present invention mainly discloses a crank structure and a manufacturing method thereof, a human body bone structure principle, an innovative process developed, and capable of exerting the expected strength and light weight performance. "The carbon fiber of the bone structure is only ^ bicycle crank and its flaws."议维后材. [Prior Art] • Press 'Sports H material is the extension line of the human hand and foot - part of the device: use 'to achieve the purpose of play, and sports equipment, is the interface between ": transport: play" . Good sports Convenient use, but also have the ability to pinch gentlemen to take care of the comfort, high performance 6V and no dreams. For the transportation of this (four) material, there is no more than the use of composite materials sports equipment, in addition to the equipment ten times a month to recover good hands::::: body _ use quality 'have to pay attention to the household complaint credit quality or The feeling of the county feels the performance of the f: to the objective of the traditional bicycle crank, mainly with ==: gold, gold. Since the all-metal material = material manufacturer 4 has reached the goal of lightening, then the non-golden material/handle design is used, for example, using carbon fiber composite materials. There is a crank structure 90 having a Shaorui body, which includes a body, and a metal surface disposed at the two ends of the metal strip is further a strip body 901 and the: metal phase 朦, Qing "has a composite material 904, This composition - the crank structure 1309616 9 〇 compared to the effect of the traditional full metal phase handle _, but because of its crank structure 9 () still has a strip body _, is a slightly heavy structure, so in the light metal The space for improvement of the board. There are still -= two ==: shank structure 91 on the leaves of I Lihua, which includes 911 - surnamed eight e, which is formed into a plate-like body, the gun body 911, the foam body, There is a problem that the metal caps 912, 913' and the foamed body 9 ιι hood 912, (10) the outer material - the body pack has a composite material, and the weight is slightly heavy. Ten, is a structure of a hollow crank 92, which is attached to the first part, and the composite material 923 is produced in the first generation of the strip-shaped composite material 923 924, λ #日气向辰The composite material m is filled with a high I gas in the nylon gas bag 925, and the band-shaped composite materials 923 and 924 are hardened and formed. Since the gas W is required to have an air inlet After that, it stays in the strength of the crank ring structure, the production is not easy to control, and after the rough embryo is completed, the residual hole is required to fill the material to beautify the appearance. Although the process achieves the hollow purpose, the resulting manufacturing difficulties are difficult. The city has improved the post-processing, and there is indeed room for improvement. The design of the hollow crank 92 is more effective than the conventional structure described above, and it can effectively achieve the lightweight effect'. However, the disadvantage is that it uses the air blowing method to make 1309616, so hollow The wall thickness of each part of the crank 9 2 cannot be controlled to the exact same size. It is easy to produce defective products, especially the difficulty of pre-fabrication caused by the blow port. The exit hole after molding, which affects the structural strength and causes the product to be easily defective. In view of the above-described lack of the conventional structure, the inventors have invented a "carbon fiber composite bicycle _ rib structure" and a manufacturing method thereof, which overcome all the disadvantages of the above-mentioned conventional structure.
【發明内容】 本發明『筋骨結構式之碳纖維複材自行車曲柄及其製 =方去』所欲解決之技術問題係在於，該習知結構之 j兼具強度與輕量化並存的魏，不但無法 產 業利用’更難以讓㈣者所接f有待改進。 =發明『騎結構紅錢維㈣自行車曲柄及其製 -預先i型的、 包括有以下步驟:準備碳纖維管:準備 管㈣分構強度的碳纖維管，該中空碳纖維 管二端之、r部；組裝連接件：於該中空碳纖維 纏繞碳纖；、:2別裝設一具肋骨設計的金屬連接件； 繞綁、=二 材料的碳纖維紗將該二連接件縷 於射，維管之二端，以繞結成—體 :採用預浸材料之碳纖維布包覆於該中°空碳 及該碳纖維紗之外表面;熱壓成型:將已包 管置於模具中，並經加熱，模壓^ 又材叙碳纖維布、碳纖維紗及中空碳纖維管形 1309616 成一體相連之結構， 曲柄結構。 其他目的、優 描述與相關的附圖更加顯明。 即知一兼具強度與製程方便之輕量化 ’和本發明的新穎特性將從以下詳細的 【實施方式】 —有關本發騎採用之技術、手段及其功效，兹舉一較 佳貫施例並配合圖式詳述如後，此僅供說明之用，在專利 申請上並不受此種結構之限制。 參照圖一，本發明筋骨結構式之碳纖維複材自行車曲 柄之製造方法包括以下步驟： 一、準備碳纖維管：準備一預先成型的中空碳纖維管 10，如圖二所示，該中空碳纖維管10兩端分別具有一開口 形毖之結合部11，且該中空碳纖維管1〇之外表面設有傾 斜交叉之容槽12，而該容槽12之二端分別延伸至該中空 碳纖維管10二端之結合部丨丨處。 一、組裝連接件：於該中空碳纖維管1 〇二端開口形態 之結合部11處分別裝設一第一連接件2〇及一第二連接件 30 ’參照圖二與圖三’該二連接件20、30係由金屬製成， 且該一連接件20、30之内孔還可設螺紋，以供組接如踏板 (圖中未示）或五爪60 (如圖五）等物。而該二連接件20、 30之外側則突設有一定位肋21、31 ’該定位肋21、31係 供插置於該中空碳纖維管10開口形態之結合部11内，以 防止該二連接件2〇、3〇相對於該中空碳纖維管10旋轉者。 1309616 m接件2°係於周侧設有數溝槽22及凸肋部份， 而該弟一連接件30係於周侧設有數個凸肋32。 三、纏繞碳纖維紗：參照圖三與圖四，利用預浸 •炭纖維0。紗4〇 _二連接件2(}、3請繞綁結於該中空 碳纖維s 1G之—端，以繞結成—體之結構。該後纖 仙之排列角度係為零度，並且纏繞通過該中空SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is that the structure of the conventional structure of the carbon fiber composite material bicycle crank and the system is not the same. Industrial use is more difficult to make (4) people need to improve. =Invented "riding structure red money dimension (four) bicycle crank and its system - pre-i type, including the following steps: preparing carbon fiber tube: preparing tube (four) splitting strength carbon fiber tube, the hollow carbon fiber tube at the two ends, r portion; Assembling the connecting member: winding the carbon fiber in the hollow carbon fiber; and: 2, installing a metal connecting member with a rib design; winding the carbon fiber yarn of the two materials to smash the two connecting members to the two ends of the vascular tube Winding into a body: a carbon fiber cloth with a prepreg material is coated on the outer surface of the medium carbon and the carbon fiber yarn; hot press forming: placing the wrapped tube in a mold, and heating, molding, and carbon fiber Cloth, carbon fiber yarn and hollow carbon fiber tube shape 1309616 are connected together, crank structure. Other objects, advantages and related drawings are more apparent. That is to say, the weight reduction of the strength and the process is convenient, and the novel features of the present invention will be described in the following detailed [embodiment] - the techniques, means and functions of the present ride, and a preferred embodiment. In conjunction with the detailed description of the drawings, this is for illustrative purposes only and is not limited by such structure in patent applications. Referring to Figure 1, the manufacturing method of the carbon fiber composite bicycle crank of the rib structure of the present invention comprises the following steps: 1. Preparing a carbon fiber tube: preparing a pre-formed hollow carbon fiber tube 10, as shown in Fig. 2, the hollow carbon fiber tube 10 The ends of the hollow carbon fiber tube 1 are respectively provided with a slanted intersecting groove 12, and the two ends of the groove 12 extend to the two ends of the hollow carbon fiber tube 10, respectively. Combine the department. I. Assembling the connecting member: a first connecting member 2〇 and a second connecting member 30 are respectively disposed at the joint portion 11 of the hollow carbon fiber tube 1 at the two end opening forms. Referring to FIG. 2 and FIG. 3 The pieces 20, 30 are made of metal, and the inner holes of the connecting members 20, 30 can also be threaded for assembly such as a pedal (not shown) or a five-pronged 60 (Fig. 5). On the outer side of the two connecting members 20, 30, a positioning rib 21, 31 is formed. The positioning ribs 21, 31 are inserted into the joint portion 11 of the hollow carbon fiber tube 10 in an open form to prevent the two connecting members. 2〇, 3〇 are rotated relative to the hollow carbon fiber tube 10. The 1309616 m connector 2° is provided with a plurality of grooves 22 and rib portions on the circumferential side, and the connecting member 30 is provided with a plurality of ribs 32 on the circumferential side. Third, the winding carbon fiber yarn: Refer to Figure 3 and Figure 4, using pre-dip • carbon fiber 0. The yarn 4〇 _ two connecting members 2 (}, 3 are wrapped around the end of the hollow carbon fiber s 1G to form a structure of the body. The rear arrangement angle of the fiber is zero degree, and is wound through the hollow.
^槽12及該二連接㈣、3G之溝槽22與凸肋32，而0 付以將該—連接件2〇、3G及該中空 繞綁結於一體。 冢在的纏 山四、包覆碳纖維布：參照圖五與圖六，採用預浸 之碳纖維布50包覆於該中空碳纖維㈣及該碳纖維紗仙 之外表面。 ' u 〜五、輕經：將已包覆有碳纖維布5Q之中 官10置於模具中’並經加熱及模壓過程，使:; 之碳纖維布50、碳纖維紗40及中空碳纖㈣1G 2 相連之結構’在兩端點綁完〇。紗結構後， ^ 泡’以利成型外型飽滿，即得-曲柄完成品。—微科知發 參照圖七，為本發明的第二個實施例，其中，欲制生 具有五爪60之曲柄時，係於前述之步驟三之後，_ ^ 步驟： 疋仃以下 四、 組裝五爪.將五爪60裝設於中空碳纖維管 端的第一連接件20上。 — 五、 包覆破纖維布：採用預浸材料之碳纖維布5〇 於該中空碳纖維管10、碳纖維紗40以及五爪6〇之外表匕復 9 1309616 - ^六、熱壓成型：將已包覆有碳纖維布50之中空碳纖維 g 1G與五爪6〇置於模具$ ’並經加誠壓難，使該些 職材料之錢維布5G、錢料、善Μ碳纖維管】一〇 乂及五爪60形成一體相連之結構，即得一具有五爪即之 曲柄完成品。 藉此，利用碳纖維紗4〇纏繞綁結之中空碳纖維管ι〇 及該一連接件2〇、3〇即相似於人體的骨骼與肌肉之連接結 _ 構’骨骼相似於已成型的中空管型物及兩端固體的金屬 筋代表人體結合骨頭與施力，受力的連接與帶動的韋刃 帶。〇紗碳纖維即是與筋相同的功能。具有良好的結構強 度及輕量化的優點。而該碳纖維布5〇即相似於人體的皮 膚，包覆於該中空碳纖維管1〇與碳纖維紗4〇外表面，可 得一美觀平整之外表面，如此，強度與美觀兼具的曲柄設 计，為一極具產業利用性之設計者。 本發明筋骨結構式之碳纖維複材自行車曲柄之結構包 • 括有一中空碳纖維管10、二連接件20、30、一碳纖維紗 4〇與一碳纖維布50 ;其中： 該中空碳纖維管10之截面概呈一橢圓形狀，且其二端 分別形成有一開口形態之結合部11 ’且該中空碳纖維管1〇 之外表面設有傾斜交叉之容槽12，而該容槽12之二端分 別延伸至該中空碳纖維管1〇二端之結合部11處。 該二連接件20、30係分別裝設於該中空竣纖維管 ^—端。該二連接件20、30包括有第一連接件20及第二 連接件30，該弟一連接件20之尺寸係大於該第二連接件 1309616 30之尺寸，且該一連接件2〇、3〇之内孔還可設螺紋，以 供組接如踏板或五爪60 #物，而該二連接件20、30之外 側則大叹有一定位肋21、31，該定位肋21、31係供插置 賊中空碳纖維管之開口形態之結合部11 β，以防止 該一連接件20、30相對於該中空碳纖維管1〇旋轉者。又 該第-連接件20係於周侧設有數溝槽22與肋骨，而該第 二連接件30係於周侧還設有數凸肋32。 φ -該碳纖維紗40係設置於該中空碳纖維管10之容槽12 及該一連接件20、30周側之溝槽22與凸肋32，形成繞結 一體之結構。該碳纖轉、之制肖度麵零度，並且為 預浸材料之碳纖維紗40 〇 I該故纖維布50係包覆於該中空碳纖維管1〇及該碳纖 維鈔40之外表面，而可得一美觀平整之外表面。該碳纖維 布50係為預浸材料之碳纖維布50者。 當然，亦可於該碳纖維布50内裝設一結合於第一連接 • 件之五爪60，以獲得一具有五爪60之曲柄結構者。 藉此，本發明筋骨結構式之碳纖維複材自行車曲柄具 有良好的結構強度及輕量化的優點，同時本發明筋骨結構 式之锬纖維複材自行車曲減可射―美觀平整之外表 面，如此，強度與美觀兼具的曲柄設計，為一極具產業利 用性之設計者。 、一 就以上所述可以歸納出本發明具有以下之優點： 制皮1.本發明『筋骨結構式之碳纖維複材自行車曲柄及其 斌ie方法』其t利用碳纖維紗纏繞綁結之中空碳纖維管 11 1309616 ====體的骨難肌肉之連接結構，具 構強度及輕量化的優點。 製造方法 外表面。 ^本發明『肋骨結構式之碳纖純材自行車曲柄及其 其中該碳纖維布即相似於人體的皮膚，包覆 “/ 纖維管與碳纖維料表面，可得—美觀平整之The groove 12 and the two connections (four), the groove 22 of the 3G and the rib 32, and 0 is used to tie the connecting members 2, 3G and the hollow winding integrally. Wrapped in the mountain 4, coated carbon fiber cloth: Referring to Figure 5 and Figure 6, a pre-impregnated carbon fiber cloth 50 is applied to the hollow carbon fiber (4) and the outer surface of the carbon fiber yarn. 'u ~ five, light by: the carbon fiber cloth 5Q Zhongguan 10 is placed in the mold' and heated and molded process, so that: carbon fiber cloth 50, carbon fiber yarn 40 and hollow carbon fiber (four) 1G 2 connected The structure 'does tied at both ends. After the yarn structure, ^ bubble 'to make the shape of the shape is full, that is, the crank-finished product. - Micro-Technology Referring to Figure 7, a second embodiment of the present invention, wherein when a crank having five claws 60 is to be produced, after the third step, _ ^ steps: 疋仃 the following four, assembly Five claws. The five claws 60 are mounted on the first connecting member 20 of the hollow carbon fiber tube end. — V. Wrapped fiber cloth: carbon fiber cloth with prepreg material 5〇 in the hollow carbon fiber tube 10, carbon fiber yarn 40 and five-jaw 6〇. 匕9 909616 - ^6, hot press forming: will have been packaged The hollow carbon fiber g 1G and the five-claw 6 覆 covered with the carbon fiber cloth 50 are placed in the mold and are hard pressed by the pressure, so that the money of the materials is 5G, the money material, the carbon fiber tube of the good material. The five claws 60 form an integrally connected structure, that is, a crank finished product having five claws. Thereby, the hollow carbon fiber tube ι which is wound with the carbon fiber yarn and the connecting member 2〇, 3〇 is similar to the connection between the bone and the muscle of the human body. The skeleton is similar to the formed hollow tube. The shape and the solid metal ribs at both ends represent the human body combined with the bone and the force applied, and the force connection and the driving of the Wei edge belt. Crepe carbon fiber is the same function as ribs. It has the advantages of good structural strength and light weight. The carbon fiber cloth 5 is similar to the skin of the human body, and is coated on the outer surface of the hollow carbon fiber tube 1 and the carbon fiber yarn, so that a beautiful and smooth outer surface can be obtained, so that the crank design with both strength and beauty is obtained. , is a designer with great industrial applicability. The structural package of the carbon fiber composite bicycle crank of the rib structure of the present invention comprises: a hollow carbon fiber tube 10, two connecting members 20, 30, a carbon fiber yarn 4 〇 and a carbon fiber cloth 50; wherein: the hollow carbon fiber tube 10 has a cross section An elliptical shape is formed, and the two ends thereof are respectively formed with a joint portion 11 ′ of an open shape, and the outer surface of the hollow carbon fiber tube 1 is provided with a slanted intersecting groove 12, and the two ends of the groove 12 respectively extend to the The hollow carbon fiber tube has a joint portion 11 at both ends. The two connecting members 20 and 30 are respectively installed at the end of the hollow fiber tube. The two connecting members 20 and 30 include a first connecting member 20 and a second connecting member 30. The connecting member 20 has a size larger than that of the second connecting member 1309616 30, and the connecting member 2〇, 3 The inner hole of the cymbal can also be provided with a thread for assembling such as a pedal or a five-claw 60#, and the outer sides of the two connecting members 20, 30 are sighed with a positioning rib 21, 31 for the positioning rib 21, 31 The joint portion 11β of the opening form of the hollow carbon fiber tube of the thief is inserted to prevent the one connecting member 20, 30 from rotating relative to the hollow carbon fiber tube. Further, the first connecting member 20 is provided with a plurality of grooves 22 and ribs on the circumferential side, and the second connecting member 30 is provided with a plurality of ribs 32 on the circumferential side. φ - the carbon fiber yarn 40 is disposed on the cavity 12 of the hollow carbon fiber tube 10 and the groove 22 and the rib 32 on the circumferential side of the connecting member 20, 30 to form a structure integrally wound. The carbon fiber is rotated to a zero degree, and is a carbon fiber yarn 40 预I of the prepreg material. The fiber cloth 50 is coated on the outer surface of the hollow carbon fiber tube 1 and the carbon fiber banknote 40, and a film is obtained. Beautiful and flat surface. The carbon fiber cloth 50 is a carbon fiber cloth 50 of a prepreg. Of course, a fifth claw 60 coupled to the first connecting member may be disposed in the carbon fiber cloth 50 to obtain a crank structure having the five claws 60. Thereby, the carbon fiber composite material bicycle crank of the rib structure of the present invention has the advantages of good structural strength and light weight, and at the same time, the rib structure of the rib structure of the present invention can reduce the radiance of the bicycle to the surface of the aesthetically pleasing surface. The crank design with both strength and beauty is a designer with great industrial appetite. As far as the above is concerned, the present invention has the following advantages: 1. Leather 1. The carbon fiber composite bicycle crank and its binie method of the present invention is a hollow carbon fiber tube 11 which is wound by a carbon fiber yarn. 1309616 ==== The connection structure of the bones of the body, the strength of the structure and the weight reduction. Manufacturing method External surface. The invention relates to a carbon fiber pure material bicycle crank with a rib structure and a carbon fiber cloth which is similar to the skin of a human body, and coated with a surface of a fiber tube and a carbon fiber material, which can be obtained - beautiful and smooth
制、止纽 肋骨結構式之錢賴材自行車曲柄及其 =法』’其中該中空碳纖維管—端的第—連接件還可 裝设-，爪，以形成—具有五爪之曲柄結構。 由疋觀之’本發明極具產業上利用價值；且又未見有 相同或類似之發明出現於國内外刊物或公開使用，實已符 S專利法規&之積極及消極要件，理應准予發明專利。 准上所述者’僅為本發明之較佳實施例而已，當不能 以之限定本發明實狀侧，故舉凡數值之變更或等效元 件之置換’或依本發对請專騎作之均等變化與修 飾，皆應仍屬本發明專利涵蓋之範疇。 【圖式之簡要說明】 圖一.為本發明之流程圖。 圖二：為本發明之立體分解圖。 圖三：為本發雜繞錢維紗之示意圖。 圖四·為本發明將二連接件與碳纖維管繞結—體之示意圖。 圖五：為本發明包覆碳纖維布後之示意圖。 圖六：為本發明之剖面示意圖。 12 1309616 圖七：為本發明第二個實施例之流程圖。 圖八：為習知結構之示意圖。 圖九：為習知結構之示意圖。 圖十：為習知結構之示意圖。 【主要元件符號說明】 (本發明）The rib structure of the money and the bicycle crank and its method are wherein the hollow carbon fiber tube-end of the first connector can also be provided with - claws to form a crank structure with five claws. Since the invention is extremely industrially useful; and no identical or similar inventions have appeared in domestic and foreign publications or in public use, the positive and negative elements of the S Patent Regulations & patent. The above description is only a preferred embodiment of the present invention, and when it is not possible to limit the actual side of the present invention, the change of the numerical value or the replacement of the equivalent element may be used for the purpose of riding the bicycle. Equal changes and modifications shall remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart of the present invention. Figure 2 is a perspective exploded view of the present invention. Figure 3: Schematic diagram of the hair-wound yarn. Figure 4 is a schematic view of the invention in which the two connecting members and the carbon fiber tube are wound together. Figure 5 is a schematic view of the present invention after coating a carbon fiber cloth. Figure 6 is a schematic cross-sectional view of the present invention. 12 1309616 Figure 7 is a flow chart of a second embodiment of the present invention. Figure 8: Schematic diagram of the structure of the prior art. Figure 9: Schematic diagram of the structure of the prior art. Figure 10: Schematic diagram of the structure of the prior art. [Main component symbol description] (Invention)
10 碳纖維管 11 結合部 12 容槽 20 第一連接件 21 定位肋 22 溝槽 30 第二連接件 31 定位肋 32 凸肋 40 碳纖維紗 50 碳纖維布 60 五爪 (習知結構） 90 曲柄結構 901 金屬板條 902 金屬帽 903 金屬帽 904複合材料 91 曲柄結構 911 發泡本體 912 金屬帽 913 金屬帽 914複合材料 92 空心曲柄 921 金屬帽 13 1309616 922金屬帽 923 924第二帶狀複合材 925 第一帶狀複合材 尼龍氣袋10 Carbon fiber tube 11 Joint 12 Groove 20 First connecting piece 21 Positioning rib 22 Groove 30 Second connecting piece 31 Positioning rib 32 Rib rib 40 Carbon fiber yarn 50 Carbon fiber cloth 60 Five claws (conventional structure) 90 Crank structure 901 Metal Slats 902 Metal Cap 903 Metal Cap 904 Composite 91 Crank Structure 911 Foam Body 912 Metal Cap 913 Metal Cap 914 Composite 92 Hollow Crank 921 Metal Cap 13 1309616 922 Metal Cap 923 924 Second Ribbon Composite 925 First Belt Composite nylon airbag
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