M431863 五、新型說明： 【新型所屬之技術領域】 [0001] 本創作係關於一種小輪自行車之增速裝置，尤指一 種可使小輪徑之自行車具有較大之齒比，使其能快速地 達到高速狀態之小輪自行車之增速裝置。 【先前技術】 [0002] 近年來，隨著慢活的休閒生活態度被大力地提倡， 許多人越來越注重平時的生活品質，以調節過度緊張的 生活壓力；於郊區或鄉村田野間騎乘自行車為目前相當 受到人們歡迎的運動型休閒活動之一，其不但能夠達到 運動休間的效果，同時也適合親子共遊活動，故騎乘自 行車已成為許多人假日休間的最愛。 [0003] 而當騎乘自行車成了許多人的休間運動，首先要解 決的便是運輸的問題；由於自行車之體積均相當大，不 適合一般人家中的轎車載運，即使勉強裝載於車輛上， 則會使車體的部份構件凸伸於車輛外，不僅相當不方便 ，而且容易發生危險而造成交通事故；再者，對於一般 利用自行車往返於家中與工作地之間的長程通勤族而言 ，其間需要透過其它大眾交通運輸工具轉乘（例如：捷 運、火車、公車等），再藉由自行車才可快速到達目的 地，但欲將自行車帶上大眾交通運輸工具不僅相當不便 ，於公車或部分火車上仍未能實行；於是，折疊式自行 車即應運而生，其以體積小、重量輕、攜帶方便而曰漸 受到人們的青睞。 [0004] 目前市面之折疊式自行車其傳動構造可視為普通自 1()12()175(^單編號A0101 第3頁/共14頁 1012005289-0 M431863 行車的微型版本；請參閱第四圖所示，主要係設有一車 架以及用以支撐車架之一前輪以及一後輪（7 )，另設 有一前鏈輪、一與後輪（7)相連結的一後鏈輪（8) 、連接前、後鏈輪（8)之一鏈條，而騎乘者係以雙腳 踩踏以驅動前鏈輪並藉由鏈條帶動後輪（7 )轉動令自 行車前進；其中，後鏈輪（8)與後輪（7 )之連結方 式係將後鏈輪（8)套設於後輪（7)之輪轂（7 1 ) 一側後，再將車架之後叉管固設於輪轂（7 1 )上，使 得後鏈輪（8)係固設於後叉管與後輪（7)之間；而 由於折疊式自行車具有較小之輪徑，因此，若在相同的 齒比下，使用者踩踏一周圈，小輪徑自行車可行走之距 離係小於大輪徑車的，其中的齒比係為前鏈輪之直徑/ 後鏈輪（8)之直徑；因此，造就一般人覺得小輪徑車 是肯定跑不快的思維；然，也正因為自行車踩踏一周圈 可行走之距離係等於齒比X輪徑，於是當小輪徑車達到足 夠的齒比（足夠大的前鏈輪直徑、足夠小的後鏈輪（8 )直徑），理論上小輪徑車也可以擁有與大輪徑車相同 的速度。 【新型内容】 [0005] 緣是，創作人有鑑於此，秉持多年該相關行業之豐 富設計開發及實際製作經驗，改良創作一小輪自行車之 增速裝置，其目的在於提供一種可使小輪徑之自行車具 有較大之齒比，使其能快速地達到高速狀態之小輪自行 車之增速裝置。 [0006] 為了達到上述實施目的，本創作人乃研擬如下實施 10120175产單编號 A〇101 第4頁/共14頁 1012005289-0 M431863 技術，係主要包含有一車架、一用以支撐車架之前輪與 後輪，以及一設置於車架之前鏈盤；其中，車架之後又 管係固設於後輪之輪轂上，於後叉管外側相距一適當距 離之輪轂同軸上係套固有一外置鏈盤，於前鏈盤與外置 鏈盤上喷合有一鏈條；再者，前鏈盤與外置鏈盤皆具有 至少一個棘輪，於棘輪之周緣λ設有複數個咬合齒。 [0007] 藉此，當外置鏈盤使用7牙咬合齒之棘輪（直徑為 28.97mm)，且搭配14英吋之前、後輪外胎及1 69.78mm (42牙）之前鏈盤直徑時，騎乘者踩踏 一周圈，自行車即可行走約6 . 2 m之距離，與傳統9牙 之棘輪（直徑為3 6. 3 8mm)相較下，本創作之增速 裝置已具有高速之水準，使得小輪徑自行車能和大輪徑 之自行車一樣輕易地加速而達到高速狀態，以改善小輪 徑自行車跑不快的傳統思維，極具商業上之價值性。 【實施方式】 [0008] 本創作之.目的及其結構功能上的優點，將依據以下 圖面所示之結構，配合具體實施例予以說明，俾使審查 委員能對本創作有更深入且具體之瞭解。 [0009] 首先，請參閱第--二圖所示，為本創作小輪自行 車之增速裝置之較佳實施例，係主要包含有一車架（1 )、一用以支撐車架（1)之前輪（圖中未標示）與後 輪（2)，以及一設置於車架（1)之前鏈盤（3); 其中，車架（1 )之後叉管（1 1 )係固設於後輪（2 )之輪轂（2 1 )上，於後叉管（1 1 )外側相距一適 當距離（D)之輪轂（21)同轴上係套固有一外置鏈 1012005289-0 10120175(^單編號A〇101 第5頁/共14頁 [0010]M431863 盤（4)，於前鏈盤（3)與外置鏈盤（4)上嚙合有 一鏈條（5 )。 再者，前鏈盤（3)係具有至少一個棘輪（6), 於棘輪（6)之周緣凸設有複數個咬合齒（6丄），於 本實施例中，前鏈盤（3)具有i個棘輪（6);又， 外置鏈盤（4)係具有至少一個棘輪（6)，於棘輪（ 6)之周緣凸設有複數個咬合齒（6丄），於本實施例 中外置鍵盤（4)係具有4個棘輪（6)，且於外置 鏈盤（4)最外側之棘輪（6)其咬合齒（6丄）之數 量係為7個（俗稱為7牙），而於靠内側相鄰之棘輪（ 6)可為8個（俗稱為8牙）；值得注意的，請參閱第 四圖所示，傳統固設於後又管與後輪（γ)之間的後鏈 輪（8)，其後鏈輪（8)之咬合齒（8工）數量因製 造與生產上的困難，使得咬合齒（8 1 )被限制最小僅 能為9個》 [0011] 根據上述之小輪自行車之增速裝置於實施使用時’ 请參閱第二〜三圖所示；首先，假設前鏈盤（3)直徑 為1 6 9· 7 8mm ( 4 2牙），而前、後輪（2 )為搭 配14英吋之外胎（亦即圓周周長為1.06m);接著 ，當外置鏈盤（4)使用7牙之棘輪（6)(直徑為2 8. 97mm)時，可計算得知齒比係為1 69. 78 / 28.97，約等於5. 8Θ ,此時，若騎乘者踩踏一周 圈’自行車可行走5. 86x1. 06，約等於6. 2m之 距離’與使用9牙之棘輪（6)(直徑為3 6 3 8mm )踩踏—周圈僅具有4· 9 5m相較下，本創作之增速裝 10120175(f^编號 A0101 第6頁/共14頁 1012005289-0 M431.863 置已達问速之標準（―般4m以下為慢速、4m〜5m 門為：下4 5m〜6ιώ間為中上速、6m以上為高速 );藉此，本創作之增速裝置能讓小輪徑之自行車快速 地達到同速狀態，以改善小輪徑車跑*快的思維使得 小輪控自行車能和大輪徑者—樣輕易地加速而達到高速 狀態。 剛 此外，糾置鏈盤⑷使用8牙之棘輪（6)( 直位為3 2. 3 4mm)時，可計算得知齒比係為工6 9 •78/32·34 ’約等於5.25，當騎乘者踩踏-周 圈，自行車即可行走5.2 5x1.0 6，約等於5. 6m 之距離’與使用9牙之棘輪（6)踩踏一周圈僅具有4, 9 5m相較下，亦能達到中上速之標準。 _3] 由上述之實施說明可知，本創作與現有技術相較之 下’本創作具有以下優點： 本創作藉由於輪轂同轴上相距後叉管一適當距離套 固外置鍵盤’使得外置鏈盤可具有咬合齒數量為7 個或8個之棘輪，於相同之前鏈盤直徑下，可具有 較大之齒比，使得騎乘者踩踏一周圈，自行車可行 走較多之距離，令小輪徑之自行車快速地達到高速 狀態，使得小輪徑自行車能和大輪徑者一樣輕易地 加速而達到高速狀態，深具結構新創及實用之價值 2. 本創作之小輪自行車之增速裝置不僅具有小輪自行 車其體積小、重量輕、攜帶方便等優勢外，其外置 鍵盤可方便地騎乘者快軌制高速的騎乘狀態， 10120175(^單編號 第 7 頁 / 共 14 頁 1012005289-0 M431863 改善小輪徑車跑不快的傳統思維與美中不足，極具 商業上之價值性。 [0015] 综上所述，本創作之小輪自行車之增速裝置，的確 能藉由上述所揭露之實施例，達到所預期之使用功效， 且本創作亦未曾公開於申請前，誠已完全符合專利法之 規定與要求。爰依法提出新型專利之申請，懇請惠予審 查，並賜准專利，則實感德便。 [0016] 惟，上述所揭之圖示及說明，僅為本創作之較佳實 施例，非為限定本創作之保護範圍；大凡熟悉該項技藝 之人士，其所依本創作之特徵範疇，所作之其它等效變 化或修飾，皆應視為不脫離本創作之設計範疇。 【圖式簡單說明】 [0017] 第一圖：本創作實施例之外觀立體圖 [0018] 第二圖：本創作實施例後輪局部放大之外觀立體圖 [0019] 第三圖：本創作實施例後輪局部放大之另一端視外觀立 體圖 [0020] 第四圖：現有小輪自行車後輪傳動裝置之外觀立體圖 【主要元件符號說明】 [0021] 〈本創作〉 10120175(f·單編號删1 第 8 頁 / 共 14 頁 1012005289-0 [0022] (1 ) 車架 (11) 後叉管 [0023] (2 ) 後輪 (21) 輪轂 [0024] (3 ) 前鏈盤 (4 ) 外置鏈盤 M431863 [0025] (5 ) 鏈條 (6 ) 棘輪 [0026] (61) 咬合齒 (D) 距離 [0027] 〈現有〉 [0028] (7 ) 後輪 (71) 輪轂 [0029] (8 ) 後鏈輪 (81) 咬合齒 ⑻襲产單编號A_ 第9頁/共14頁 1012005289-0M431863 V. New Description: [New Technology Field] [0001] This creation is about a speed-increasing device for a small wheel bicycle, especially a bicycle with a small wheel diameter that allows it to be fast. A speed increasing device for a small wheel bicycle that reaches a high speed state. [Prior Art] [0002] In recent years, with the attitude of slow living leisure life being strongly advocated, many people are paying more and more attention to the quality of life in order to regulate the stress of excessive stress; riding in suburban or rural fields. Bicycle is one of the most popular sports leisure activities. It not only achieves the effect of sports breaks, but also is suitable for parent-child activities. Therefore, riding bicycles has become a favorite of many people on holiday holidays. [0003] When riding a bicycle becomes a resting exercise for many people, the first problem to be solved is the problem of transportation; since the bicycles are quite large in size, they are not suitable for the carriage of cars in ordinary people, even if they are barely loaded on the vehicle, It will make some parts of the car body protrude out of the vehicle, which is not only inconvenient, but also dangerous and cause traffic accidents. Moreover, for the long-distance commuter who usually uses bicycles to travel between home and work place, In the meantime, you need to transfer through other public transportation vehicles (for example: MRT, train, bus, etc.), and then you can quickly reach the destination by bicycle. However, it is not only inconvenient to bring the bicycle to the mass transit, on the bus or Some trains have still not been implemented; therefore, folding bicycles have emerged as the times require, and they are gradually favored by people because of their small size, light weight and convenient carrying. [0004] At present, the transmission structure of the folding bicycle in the market can be regarded as a micro version of the ordinary 1 () 12 () 175 (^ single number A0101 page 3 / 14 pages 1012005289-0 M431863 driving; see the fourth figure The main body is provided with a frame and a front wheel for supporting the frame and a rear wheel (7), and a front sprocket and a rear sprocket (8) coupled to the rear wheel (7). A chain of one of the front and rear sprockets (8) is connected, and the rider pedals with both feet to drive the front sprocket and rotates the rear wheel (7) by the chain to advance the bicycle; wherein the rear sprocket (8) The connection with the rear wheel (7) is such that the rear sprocket (8) is sleeved on one side of the hub (7 1 ) of the rear wheel (7), and then the rear fork tube of the frame is fixed to the hub (7 1 ). The rear sprocket (8) is fixed between the rear fork tube and the rear wheel (7); and since the folding bicycle has a smaller wheel diameter, if the same gear ratio, the user steps on In a circle, the distance traveled by the small-wheel bicycle is smaller than that of the large-wheeled vehicle, and the gear ratio is the diameter of the front sprocket/the diameter of the rear sprocket (8); therefore, As far as most people think, a small-wheeled car is definitely not a fast-moving thinking; however, it is also because the distance that a bicycle can walk on a week is equal to the X-wheel diameter of the tooth, so when the small-wheeled car reaches a sufficient gear ratio (sufficiently large The diameter of the front sprocket and the diameter of the rear sprocket (8) are small enough. In theory, the small wheeled car can also have the same speed as the large wheeled car. [New content] [0005] The edge is that the creator has this in mind. With years of experience in the design, development and practical production of this related industry, the company has improved the creation of a small wheel bicycle speed increasing device, which aims to provide a bicycle with a small wheel diameter with a large gear ratio, enabling it to reach quickly. Speed-increasing device for high-speed bicycles. [0006] In order to achieve the above-mentioned implementation objectives, the creator has developed the following implementation: 10120175, order number A〇101, page 4/14 pages, 1012005289-0, M431863 technology, Department The utility model mainly comprises a frame, a front wheel and a rear wheel for supporting the frame, and a chain plate disposed in front of the frame; wherein the frame is fixed on the wheel hub of the rear wheel, and then The outer side of the tube is disposed at an appropriate distance from the hub, and the outer chain is integrally provided with an outer chain. The front chain plate and the outer chain plate are sprayed with a chain; further, the front chain plate and the outer chain plate have at least one ratchet wheel. A plurality of occlusal teeth are provided on the periphery of the ratchet. [0007] Thus, when the external sprocket uses a ratchet of a 7-toothed tooth (diameter of 28.97 mm), and is matched with a 14-inch front, a rear tire and a tire 69.78mm (42 teeth) before the diameter of the chain, the rider stepped on a circle, the bicycle can walk about 6.2 m distance, compared with the traditional 9-tooth ratchet (diameter 3 6. 3 8mm) The speed-increasing device of this creation has a high-speed standard, which makes the small-wheeled bicycle can accelerate as fast as the big-wheel bicycle and reach a high-speed state, so as to improve the traditional thinking of the small-wheeled bicycle running fast, which is of great commercial value. Sex. [Embodiment] [0008] The purpose of this creation and its structural and functional advantages will be explained in accordance with the structure shown in the following drawings, in conjunction with specific embodiments, so that the review committee can have more in-depth and specific To understanding. [0009] First, please refer to the first-second figure, which is a preferred embodiment of the speed increasing device for the creation of a small wheel bicycle, which mainly comprises a frame (1) and a frame for supporting the frame (1). The front wheel (not shown) and the rear wheel (2), and a chain plate (3) disposed before the frame (1); wherein the frame (1) is followed by the fork tube (1 1) On the wheel hub (2 1 ) of the wheel (2), on the outer side of the rear fork pipe (1 1 ), a suitable distance (D) of the hub (21) is coaxially attached to the outer sleeve 1012005289-0 10120175 (^ single No. A〇101 Page 5 of 14 [0010] M431863 disk (4), a chain (5) is engaged with the front chain plate (3) and the external chain plate (4). Furthermore, the front chain plate ( 3) has at least one ratchet (6), a plurality of snap teeth (6丄) protruding from the periphery of the ratchet (6), in this embodiment, the front chain plate (3) has i ratchets (6); Further, the external chain plate (4) has at least one ratchet (6), and a plurality of engaging teeth (6丄) are protruded from the periphery of the ratchet (6). In this embodiment, the external keyboard (4) has 4 Ratchets (6), and the outer chain (4) The number of the occlusal teeth (6 丄) of the side ratchet (6) is 7 (commonly known as 7 teeth), and the ratchets (6) adjacent to the inner side can be 8 (commonly known as 8 teeth); As shown in the fourth figure, the rear sprocket (8) is conventionally fixed between the rear tube and the rear wheel (γ), and the number of the sprocket (8) of the rear sprocket (8) is manufactured. With the difficulty in production, the bite teeth (8 1 ) are limited to a minimum of only 9" [0011] According to the above-mentioned small wheel bicycle speed increasing device when used in operation 'Please refer to the second to third figures; First, suppose the front chain plate (3) has a diameter of 1 6 9· 7 8 mm (42 teeth), and the front and rear wheels (2) are matched with a 14-inch outer tire (that is, the circumference of the circumference is 1.06 m); When the outer chain (4) uses a ratchet (6) of 7 teeth (2 8. 97 mm in diameter), it can be calculated that the gear ratio is 1 69. 78 / 28.97, which is approximately equal to 5. 8 Θ. If the rider steps on a circle, the bicycle can walk 5. 86x1. 06, which is equal to the distance of 6. 2m and the pedal with 9 teeth (6) (diameter is 3 6 3 8mm) - the circumference has only 4 · 9 5m compared to the next, the creation of this increase Speed loaded 10120175 (f^ No. A0101 Page 6 / Total 14 pages 1012005289-0 M431.863 The standard has reached the speed of questioning ("the lower 4m below the slow speed, 4m~5m door: the next 4 5m~6ιώ For the medium-high speed, 6m or more is the high speed); thereby, the speed-increasing device of the creation can make the bicycle of the small-wheel diameter reach the same speed state quickly, so as to improve the thinking of the small-wheeled vehicle running fast, making the small wheel-controlled bicycle It can easily accelerate with a large wheel and reach a high speed state. In addition, when the correction chain (4) uses the ratchet (6) of 8 teeth (straight position is 3 2. 3 4mm), it can be calculated that the gear ratio is 6 9 • 78/32·34 ', which is equal to 5.25. When the rider steps on the circumference, the bicycle can walk 5.2 5x1.0 6, which is equal to the distance of 5. 6m. Compared with the use of the 9-tooth ratchet (6), the circumference is only 4, 9 5m. Can reach the standard of medium and high speed. _3] According to the above-mentioned implementation description, this creation has the following advantages compared with the prior art: This creation makes the external chain by arranging the external keyboard at an appropriate distance from the rear fork tube of the hub coaxially. The disc can have a ratchet with a number of 7 or 8 snap teeth. Under the same front chain diameter, it can have a larger gear ratio, so that the rider can step on a circle and the bicycle can travel more distances. The bicycle of the track quickly reaches a high speed state, so that the small-wheel bicycle can accelerate as fast as the big wheel diameter to reach a high-speed state, and has a new structure and practical value. 2. The speed-increasing device of the small wheel bicycle of the present invention is not only With the advantages of small size, light weight and convenient carrying, the small-sized bicycle can easily ride the high-speed riding state of the rider fast track, 10120175 (^单号第7页/14 pages, 1012005289- 0 M431863 It is of great commercial value to improve the traditional thinking and the shortcomings of small wheeled cars. [0015] In summary, the speed-increasing device of the small wheel bicycle of this creation is indeed The above-mentioned disclosed embodiments can achieve the intended use effect, and the creation has not been disclosed before the application, and Cheng has fully complied with the requirements and requirements of the patent law. 提出Proposing a new patent application according to law, please for review [0016] However, the illustrations and descriptions disclosed above are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention; Any other equivalent change or modification made by a person in accordance with the characteristics of the creation should be regarded as not departing from the design scope of the creation. [Simplified description of the drawing] [0017] First figure: The present embodiment Appearance perspective view [0018] Second diagram: Appearance perspective view of the rear wheel partially enlarged in the present embodiment [0019] Third diagram: The other end view of the rear wheel of the present embodiment is enlarged. [0020] Fourth diagram: existing small Appearance perspective view of the rear wheel transmission of the wheel bicycle [Description of the main components] [0021] <Creation> 10120175 (f·Single number deletion 1 Page 8 / Total 14 page 1012005289-0 [0022] (1) Frame (11) Rear fork tube [0023] (2) Rear wheel (21) Hub [0024] (3) Front chain plate (4) External chain plate M431863 [0025] (5) Chain (6) Ratchet [0026] ( 61) Bite (D) Distance [0027] <Existing> [0028] (7) Rear wheel (71) Hub [0029] (8) Rear sprocket (81) Bite (8) Production order number A_ Page 9 / Total 14 pages 1012005289-0