五、新型說明： 【新型所屬之技術領域】 本創作係有關於-種自行車齒盤之轉換件，尤指該轉換件係 可直接與原先越或是-般常見容綠得之齒盤組裝©[並藉 由轉換件之軸穿孔和減二曲柄具雜佳之絲強度者。 【先前技術】 按’市面上自行車依魏性係具錢速類、公賴、越野類 及休閒類等複數種自行車種類，而現今另具有較為特殊的車種， 用以表演花式特技或極限運動等活動，為求表演方便其多數係 不以煞車把手及煞車鋼__車件進行辭，係藉由花鼓特殊 的設置將曲柄逆轉即能達到煞車減速效果，而且花式特技，絕大 4伤需要平細常有往復踩動曲柄連動齒盤之動作U習知之 一種特技車使用之齒盤即曲柄結構，先請配合第4、5圖所示，該 齒盤(50)係財央轴孔⑽）穿設有一心軸⑸），該心轴⑸）的兩 側係为別與曲柄（52)組接固定，且其中一靠近齒盤⑽之曲柄⑽ 内側係設有-螺孔(521)及—螺鎖件(522)，以配合與齒盤⑽之 軸孔⑽1)外周預設處之穿孔(5〇2)鎖接固定，進而藉由曲柄⑽ 直接連動魅(5G)魏者’而當自行車進行花式特技時，其往復 之踏動曲柄（52)及連動之齒盤⑽僅以螺鎖件（522)通過穿孔 (502)鎖固於螺孔⑽）處，結構組設強度不佳，容易因使用者的 前後往復作_造成螺鎖件(522)鬆脫、搖晃，_具危險性者， 乃為習知制之缺失者’而為改善習知結構使㈣缺失其市面 M420482 * 上係具有另一習知結構，再請參閱第6、7圖所示，該齒盤（60)係 於中心處設有一非圓孔之軸孔（601)並迫緊固定塞設有一卡嵌件 (61) ’該卡嵌件(61)係設有一具連續鋸齒狀之卡嵌孔(611) ’藉以 該齒盤（60)即能以卡嵌孔(611)與心軸（62)具連續鋸齒表面之套 接端（621)及曲柄（63)具連續鋸齒狀之穿孔(631)嵌合固定，當使 用者踩動曲柄（63)時，並能以心軸（62)連動齒盤(60)轉動者，並 具有較佳之結構強度者，但該齒盤（6〇)製程麻煩且造價高，一般 • 玩家取得不易，且於齒盤⑽）替換上也必須花費較高的價格，較 不具變化性之使用，形成該結構使用之缺失者。 有鑑於此，創作人本於多年從事相關產品之製造開發與設計 經驗，針對上述之目標，詳加設計與審慎評估後，終得一確具實 用性之本創作。 【新型内容】 欲解決之技術問題點： 鲁 （一）、按，習知之曲柄及連動之齒盤僅以螺鎖件通過穿孔鎖 固於螺孔A ’結構組設強度稀，容易因使时的前後往復作動 而造成螺鎖件鬆脫、搖晃，進而具危險性，乃為習知使用之缺失 者。 (二）、另一習知之齒盤係於中心處設有一非圓孔之軸孔並迫 緊固定塞設有-傾件’該卡嵌件係設有—具連賴餘之卡後 孔’藉以該越即能以卡嵌孔知軸具連續_表面之套接端及 曲柄具連續麵狀之穿孔後合固定，雖具有較佳之結構強度，但V. New description: [New technical field] This creation is about the conversion of a bicycle toothed disc, especially if the conversion part can be directly assembled with the original or more common green toothed disc. [And by the axis of the conversion member perforation and the reduction of the two cranks with a good silk strength. [Prior Art] According to the 'vehicle bicycles in the market, there are a variety of bicycle types such as money-speed, public, off-road and leisure. Nowadays, there are more special types of cars to perform fancy stunts or extreme sports. For the sake of performance, most of them do not use the handlebars of the brakes and the brakes of the brakes. The reversal of the crank by the special setting of the hub is able to achieve the deceleration effect of the brakes, and the fancy stunts are extremely large. It is necessary to have a flattening and reciprocating stepping motion of the crank gear. The crankshaft structure used in a stunt car is a crank structure. First, please match the 4th and 5th drawings. The toothed disc (50) is a shaft hole. (10)) A mandrel (5) is worn, and the two sides of the mandrel (5) are not fixedly connected to the crank (52), and one of the cranks (10) near the toothed disc (10) is provided with a screw hole (521). And the screw-locking member (522) is matched and fixed with the perforation (5〇2) at the outer peripheral pre-set of the shaft hole (10) 1) of the toothed disc (10), and then directly interlocks the charm (5G) with the crank (10). When the bicycle performs a fancy stunt, its reciprocating pedal (52) and interlocking teeth (10) Only the screw lock member (522) is locked at the screw hole (10) through the through hole (502), and the structural assembly is not strong enough, and the screw lock member (522) is loosened and shaken due to the user's back and forth reciprocation. , _ dangerous, is the missing of the conventional system' and to improve the conventional structure (4) missing its market M420482 * The upper system has another conventional structure, then see Figures 6, 7 The toothed disc (60) is provided with a non-circular hole shaft hole (601) at the center and a fastening plug is provided with a card insert (61). The card insert (61) is provided with a continuous zigzag card. Inserting hole (611) 'By the toothed disc (60), the sleeve end (621) with the continuous serrated surface and the crank (63) with the locking hole (611) and the mandrel (62) have continuous serrated perforations (631) Fitting and fixing, when the user steps on the crank (63), and can rotate the toothed disc (60) with the mandrel (62), and has better structural strength, but the toothed disc (6〇) The process is troublesome and the cost is high. Generally, the player can't easily get it, and the replacement of the toothed disc (10) must also cost a higher price, and it is less versatile to form the structure. Missing persons. In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation of the above objectives, the creator will have a practical and practical creation. [New content] Technical problems to be solved: Lu (1), press, the crank of the conventional and the interlocking gear plate are only locked with the screw lock through the perforation in the screw hole A 'structure is thin, easy to make time The reciprocating action of the front and rear causes the screw to be loosened and shaken, which is dangerous, and is a missing one of the conventional use. (2) Another conventional toothed disc is provided with a non-circular hole shaft hole at the center and a fixed plug is provided with a -dipping piece. The card insert is provided with a rear hole of the card. Therefore, the more the card can be inserted into the hole, the splicing end of the surface and the continuous surface of the crank are fixed and fixed, although the structural strength is good,