M352463 八、新型說明： 【新型所屬之技術領域】 本創作係與自行車傳動結構之技術領域有關，特別是 有關於一種阻力小且噪音低之棘齒飛輪結構。 【先前技術】 按，傳統的自行車飛輪主要包括有一飛輪外殼、一飛 輪内仁、一鋼珠上蓋、兩組呈環狀排列之鋼珠及兩組裝設 於飛輪内仁上之單向離合器，單向離合器乃由一對飛輪棘 爪、c型彈簧及配合設於外殼上之棘齒槽組成，使得與飛 輪外殼結合之鏈輪在正轉時能帶動與飛輪内彳二結合之心 轴，而在鏈輪反轉時則藉呈空轉之狀態。 前述之飛輪結構，由於是藉由雄輪棘爪來達到單向離 合效果，而礙於空間的限制通常只能設置2〜3個飛輪棘 爪，因此飛輪棘爪必需承受相當大的作用力，這常導致飛 輪棘爪破裂而失效的問題。 再者，前述的飛輪棘爪是藉由C型彈簧來保持與棘齒 槽之嚅合，然而C型彈簧在長時間使用後容易產生彈性疲 乏的問題，而使得飛輪棘爪與棘齒槽所構成之單向離合器 失效，因此有再加以改進之必要。 基於上述的問題，便有業者研發出新一代的飛輪結 M352463 構’如我國新型專利第Μ3 3 Q 2 ◦8號「花數棘輪t置」 即是，此-花數棘輪裝置包括—藉以蚊於花轂内'周壁的」 套環、一可於套環内部呈軸向位移的棘輪塊、—設於飛輪 裝置端面的側向環狀棘齒’以及一以上設於棘輪塊遠離飛 輪裝置該端的永久磁鐵，所述的棘輪塊朝向飛輪裝置該端 設有一侧向環狀棘齒，藉與飛輪裝置端面呈單向卡合作 用’又各構件當t ’除了永久磁鐵以外’棘輪塊及套環均 是採用具有導磁性的金屬製成，使棘輪塊受到永久磁鐵的 作用將常,¾、位於套環内，進而貼附於飛輪裝置端面，以達 到阻力小、無彈性疲乏現象的目的。 此一專利前案是藉由將棘齒結構設計成侧向環狀之結 構，使棘齒之數量增加來加強棘齒結構之受力程度，以提 高其耐用性。另一方面，則藉由磁鐵取代傳統的c型彈箬， 以避免產生彈性疲乏而失效的現象。 但是，在此一專利前案中，磁鐵是設置在棘輪塊遠離 飛輪裝置之一側，這使得磁鐵與飛輪上的環狀棘齒具有相 當的距離’因此磁鐵需設計成環狀或較大之塊狀結構，以 期能產生較強的磁吸力，讓棘輪塊與飛輪上的環狀棘齒常 保壤合之狀fe ’但如此一來也造成棘輪塊與飛輪上的環狀 棘齒脫離的阻力增大，相對地也使棘輪塊與飛輪上的環狀 棘齒在空轉狀態時的摩擦力增大，而會產生較大的噪音， M352463 因此前述之結構仍有再加以改進之必要。 【新型内容】 本創作之主要目的，在於解決上述的問題而提供一種 空轉阻力小且噪音低之自行車棘齒飛輪。 為達前述之目的，本創作的自行車之棘齒飛輪係由一 驅動輪與一套筒所組成，該驅動輪係呈中空之環狀形態， 驅動輪外周具有一齒部，俾供與自行車之傳動件連結，且 該驅動輪之一侧面具有一第一環狀棘齒，而該套筒係穿套 於該驅動輪，且其内周具有内螺紋，俾供與自行車之花轂 心轴結合，該套筒對應該第一環狀棘齒具有一第二環狀棘 齒。 該第一環狀棘齒與該第二環狀棘齒均係由導磁材質製 成，且至少其中一者於兩者相對嚅合的一面環設有數個等 間隔設置之凹槽，並於各凹槽中分別埋設一磁鐵，且各磁 鐵係低於第一、二環狀棘齒嚅合的部份，再於該第一、二 環狀棘齒之其中一者環設有數個等間隔設置之容置槽，各 容置槽中分別設有一緩衝件，且各緩衝件係略凸出至第一 、二環狀棘齒嚷合的部份，俾於第一、二環狀棘齒離合時 提供緩衝作用。 據此，由於各磁鐵是被埋設在第一、二環狀棘齒嚅合 7 M352463 的面，因此所選用之各磁鐵 二歯片脫離的阻力^、“ 而太大’讓第-、 佳。再者：轉或帶動的靈敏度較 衝件，可以^―、二環狀棘㈣合的—面設置有數個緩 衝仟了以有效抑制噪音的發生。 本創作之上述及其他目的與優點，不難 實施例之詳細_與_中，獲得深人了解。 ^然’柄作在某些另件上，或另件之安排上容許有 飞日/ιΓ斤選用之實施例’則於本說明書中，予以詳細 e兄明，並於附圖中展示其構造。 【實施方式】 之圖4，其係本創作所選用之第-實施例 ^人立圖不。W 1係本創作之立體分解圖；圖2係本創作 U口剖視圖；圖3係本創作第—、二 意圖；®4係本創作使綠態之剖視㈣圖/ 4不 本創作之棘齒飛輪，係由一驅動輪工與一套筒2相互 穿套所組成。該驅動輪i係呈中空之環狀形ga外周且 =齒部U’俾供與自行車之傳動件（如：皮帶或鍵條) 連、、、口 ’於本實施例巾’該驅動輪丄之齒部丄丄係呈盥齒皮 π配合之皮帶齒輪形態，且該齒部i k —侧具有一播緣 111，而另—側則設有-護蓋12，使該齒部 M352463 被封閉。 忒驅動輪1内緣中段具有—環狀之内齒槽1 3，該内 齒槽1 3具有-第-内齒部3工，且該内齒槽工3係供 -第-齒片1 6設置’其係由導磁材質製成，該第一齒片 1 6對應該内齒槽丄3之第—内齒部i 3 i具有一第一外 齒部1 6 1，使該第-齒片工6可於該内齒槽i 3中轴向 春位移’且於該第一齒片16之側面環設有—第一環狀棘齒 1 6 2 ’而該驅動輪丄於該内齒槽丄3鄰靠第一環狀棘齒 1 6 2之-側設有-第—容置部工4，且該驅動輪丄於該 内齒槽1 3相對於該第一容置部丄4之一側設 置部1 5。 一 該驅動輪1與該套筒2之間設有一滾珠轴承3，而該 f珠軸承3係容設於該第二容置部丄5，且該套筒2之一 化具有凸緣2 1 ’以供限制該滾珠軸承3之位置，而前述 之濩蓋1 2同時具有定位該滾珠軸承3之作用。 ^套筒Μ周具有内螺紋22，俾供與自行車之心轴 第=結合，該套筒2具有-第二外齒部23用以與一 結合，其係由導磁材質製成，而該第二齒片 节軸泰Γ弟二外齒部2 3具有一第二内齒部2 5 i，使 與該第二齒片25能相互鸯合 之—相丨ί品琳丄十 Λ * —齒月 $應該第一環狀棘齒162具有一第二環狀棘齒 9 M352463 ，該第二齒片25的外周環設有一〇形環2 6，使 該第二齒片2 5容置於該容置部1 4時，可由該〇形環2 6與該第一容置部1 4周緣接觸，以避免異物進入。 該套筒2中段另具有-外螺紋部2 4用以與—固定環 2 7相互螺固’而該第二#片2 5係以螺栓2 5 〇鎖固於 該固定環2 7。 、 而邊第二齒片2 5於該第二環狀棘齒2 5 2的部份環 設有數個㈣隔設置之凹槽2 5 3 ;於本實施例中係以^ 個凹槽為崎示；並於各凹槽2 5 3中分別埋設—磁鐵2 8 ’且各8係低於第-、二環狀棘齒1 6 i、2 5 2售合的部份；如圖3所示。且於該該第二環狀棘齒2 5 2環設有數個等間隔設置之容置槽2 5 4，各容置槽2 $ j中分別設有-緩衝件2 9，且各緩衝件2 g係略^出至 第一、二環狀棘齒i 62、252嚷合的部份，如圖4所 示；俾於第―、二環狀棘齒162、2 5 2離合時提供緩 衝作用。 請對照參閱圖2與圖5，當驅動輪工正向轉動時，第 w片16與第—齒片25之間藉由各磁鐵的磁吸力以及 第一:二環狀棘齒162、25 2的單㈣合作用，如圖 2所不’使驅動輪1的轉動能透過第-、二環狀棘齒1 6 2、2 5 2的傳動而帶動套筒2同步轉動，進而帶動與套 10 M352463 筒2連結的心軸（花轂）。而當驅動輪i反向轉動時，第一 齒片1 6與第二齒片2 5之間由於第一、二環狀棘齒工6 2、2 5 2的單向嚅合作用，使得第—齒片丄6會被推開， 而使得第一、二環狀棘齒162、2 5 2脫離，如圖5所 示，而後再藉由各磁鐵28的吸力來吸附第一齒片1 6， 使第齒片再與第二齒片25嚷合’如此反覆脫離、M352463 VIII. New description: [New technical field] This creation is related to the technical field of bicycle transmission structure, especially for a ratchet flywheel structure with low resistance and low noise. [Prior Art] According to the conventional bicycle flywheel, the utility model mainly comprises a flywheel outer casing, a flywheel inner core, a steel ball upper cover, two sets of annularly arranged steel balls and two one-way clutches assembled on the flywheel inner core, one-way clutch The utility model is composed of a pair of flywheel pawls, a c-type spring and a ratchet groove provided on the outer casing, so that the sprocket combined with the flywheel outer casing can drive the mandrel combined with the inner ring of the flywheel in the forward rotation, and in the chain When the wheel is reversed, it is idling. In the foregoing flywheel structure, since the male wheel pawl is used to achieve the one-way clutching effect, and the space limitation is usually only 2 to 3 flywheel pawls, the flywheel pawl must bear a considerable force. Often causes the flywheel pawl to break and fail. Furthermore, the aforementioned flywheel pawl is held by the C-shaped spring to engage with the ratchet groove. However, the C-type spring is prone to elastic fatigue after long-term use, and the flywheel pawl and the ratchet groove are provided. The one-way clutch that is constructed fails, so there is a need for further improvement. Based on the above problems, some companies have developed a new generation of flywheel knots M352463. For example, China's new patent No. Μ3 3 Q 2 ◦8 "Flower ratchet t set" is, this - flower ratchet device includes - mosquito a collar on the 'peripheral wall' in the hub, a ratchet block axially displaceable inside the collar, a lateral annular ratchet disposed on the end face of the flywheel device, and more than one disposed on the ratchet block away from the flywheel device a permanent magnet at the end, the ratchet block is provided with a side annular ratchet toward the end of the flywheel device, and a one-way card cooperation is used with the end face of the flywheel device. 'The other components are t' except for the permanent magnet, the ratchet block and the sleeve. The rings are made of metal with magnetic permeability, so that the ratchet block is often subjected to the action of permanent magnets, 3⁄4, located in the collar, and then attached to the end face of the flywheel device to achieve the purpose of small resistance and lack of elastic fatigue. In the prior patent, the design of the ratchet structure is a laterally annular structure, and the number of ratchets is increased to enhance the force of the ratchet structure to improve its durability. On the other hand, the traditional c-type magazine is replaced by a magnet to avoid the phenomenon of elastic fatigue and failure. However, in this prior patent, the magnet is disposed on the side of the ratchet block away from the flywheel device, which makes the magnet have a considerable distance from the annular ratchet on the flywheel. Therefore, the magnet needs to be designed to be ring-shaped or larger. The block structure, in order to produce a strong magnetic attraction, so that the ratchet block and the annular ratchet on the flywheel are often in contact with each other, but this also causes the resistance of the ratchet block to the annular ratchet on the flywheel. Increasingly, the friction between the ratchet block and the annular ratchet on the flywheel is increased in the idling state, and a large noise is generated. Therefore, M352463 is still necessary for the above structure. [New content] The main purpose of this creation is to solve the above problems and provide a bicycle ratchet flywheel with low idling resistance and low noise. For the purpose of the foregoing, the bicycle ratchet flywheel of the present invention is composed of a driving wheel and a sleeve. The driving wheel has a hollow annular shape, and the outer circumference of the driving wheel has a tooth portion for the bicycle. The transmission member is coupled, and one side of the driving wheel has a first annular ratchet, and the sleeve is sleeved on the driving wheel, and has an internal thread on the inner circumference thereof, and is coupled with the flower hub of the bicycle. The sleeve has a second annular ratchet corresponding to the first annular ratchet. The first annular ratchet and the second annular ratchet are both made of a magnetically permeable material, and at least one of the two rings is provided with a plurality of equally spaced grooves on the opposite side of the ring. A magnet is embedded in each of the grooves, and each of the magnets is lower than the first and second annular ratchets, and then one of the first and second annular ratchets is provided with a plurality of equal intervals. The accommodating groove is provided, and each of the accommodating grooves is respectively provided with a buffering member, and each of the buffering members is slightly protruded to the first and second annular ratchets, and is adjacent to the first and second annular ratchets. Provides a cushioning effect when clutching. Accordingly, since each of the magnets is embedded in the surface of the first and second annular ratchets 7 M352463, the resistance of each of the selected magnets is separated, and "too large" makes the first and the best. Furthermore, the sensitivity of turning or driving is higher than that of punching, and the number of buffers can be set on the surface of the two ring-shaped spines (four) to effectively suppress the occurrence of noise. The above and other purposes and advantages of the present creation are not difficult. The details of the embodiment _ and _, get a deep understanding. ^ However, the handle is made on some parts, or the arrangement of the parts allows the flight of the day / ι Γ select the embodiment 'in this specification, The details are shown in the accompanying drawings. [Embodiment] Figure 4 is the first embodiment of the present invention. The W 1 is an exploded view of the present invention; Figure 2 is a cross-sectional view of the U port of the present creation; Figure 3 is the first and second intentions of the creation; the 4th series of the creation makes the green state of the cross-sectional view (4)/4 of the ratchet flywheel of the creation, which is driven by a driving wheel and A sleeve 2 is formed by a sleeve. The drive wheel i has a hollow annular shape ga outer circumference and = tooth portion U'俾And the transmission component of the bicycle (such as a belt or a key strip), and the mouth of the belt of the present embodiment, the tooth portion of the driving rim is in the form of a belt gear of the gingival skin π, and the tooth portion The ik-side has a curtain edge 111, and the other side is provided with a cover 12, so that the tooth portion M352463 is closed. The middle portion of the inner edge of the drive wheel 1 has an annular inner tooth groove 13 and the inner tooth The groove 13 has a -to-internal tooth portion 3, and the inner tooth groove 3 is provided with a - tooth plate 16 which is made of a magnetically permeable material, and the first tooth piece 16 corresponds to The first inner tooth portion i 3 i of the tooth groove 3 has a first outer tooth portion 166, such that the first tooth cutter 6 can be axially displaced in the inner tooth groove i 3 'and The side ring of one tooth piece 16 is provided with a first annular ratchet 1 6 2 ' and the drive wheel rim is disposed on the side of the inner ring groove 3 adjacent to the first annular ratchet 1 6 2 - The accommodating part 4 is disposed, and the driving rim is disposed on the one side of the inner sipe 13 with respect to the one side of the first accommodating portion 丄4. The driving wheel 1 is disposed between the driving wheel 1 and the sleeve 2. There is a ball bearing 3, and the f-bead bearing 3 is housed in the second receiving portion 5, and the sleeve 2 is formed with a flange 2 1 ' to limit the position of the ball bearing 3, and the aforementioned cover 12 has the function of positioning the ball bearing 3. The thread 22 is coupled to the mandrel of the bicycle, and the sleeve 2 has a second outer toothing portion 23 for coupling with a magnetically permeable material, and the second toothed section is The second outer tooth portion 2 3 has a second inner tooth portion 2 5 i so that the second tooth piece 25 can be mutually coupled with each other. 丨 品 丄 丄 丄 Λ Λ — — — — 应该 应该 应该 应该 应该 应该 应该 应该 应该 应该 应该The ratchet teeth 162 have a second annular ratchet 9 M352463. The outer peripheral ring of the second toothed piece 25 is provided with a ring-shaped ring 26, and the second toothed piece 25 is received in the receiving portion 14 At this time, the ring-shaped ring 26 can be in contact with the periphery of the first receiving portion 14 to prevent foreign matter from entering. The middle portion of the sleeve 2 has a - external thread portion 24 for screwing with the retaining ring 27 and the second member 25 is locked to the retaining ring 27 with a bolt 2 5 . The second tooth piece 25 is provided with a plurality of (four) spaced grooves 2 5 3 in a portion of the second annular ratchet 2 5 2; in the embodiment, the groove is And each of the recesses 2 5 3 is embedded with a magnet 2 8 ' and each of the 8 series is lower than the portion of the first and second annular ratchets 1 6 i, 2 5 2; as shown in FIG. . And the second annular ratchet 2 5 2 ring is provided with a plurality of equally spaced receiving slots 2 5 4 , and each of the receiving slots 2 $ j is provided with a buffer member 2 9 and each buffer member 2 g is slightly extracted to the first and second annular ratchets i 62, 252, as shown in Figure 4; the first and second annular ratchets 162, 2 2 2 provide cushioning . Referring to FIG. 2 and FIG. 5, when the driving wheel rotates in the forward direction, the magnetic attraction between the w-th sheet 16 and the first tooth piece 25 by the magnets and the first: two annular ratchet teeth 162, 25 2 The single (four) cooperation, as shown in Figure 2, does not enable the rotation of the drive wheel 1 to drive the sleeve 2 to rotate synchronously through the transmission of the first and second annular ratchets 1 6 2, 2 5 2, thereby driving and the sleeve 10 M352463 The mandrel (flower hub) of the barrel 2 is connected. When the driving wheel i rotates in the reverse direction, the first toothed piece 16 and the second toothed piece 25 are combined by the first and second annular ratchets 6 2, 2 5 2 , so that the first - the toothed cymbal 6 is pushed away, causing the first and second annular ratchets 162, 252 to be disengaged, as shown in Fig. 5, and then the first tooth 16 is adsorbed by the suction of each magnet 28. , so that the first tooth piece is further engaged with the second tooth piece 25, so that it is repeatedly detached,
嚷合的動作’即可使驅動輪i與套筒2之間形成空轉狀 態，而不互相帶動。 在刖述空轉的過程中，由於各磁鐵2 8是被埋設在第 二環狀棘齒2 5 2與第-環狀棘齒1 6 2嚅合的一面，因 此所選用之各磁鐵2 8的磁力不#太大即可達到吸附第一 齒片16的效果，如此能讓第一、二齒片16、25間空 二或：動的靈敏度較佳。再者，在第二環狀棘齒2 5 2與 =%狀棘齒1 6 2嗜合的-面同時設置有數個緩衝件2 緩衝件2 9是由PU膠製成，具有良好的變形與緩 衝效果，因此在笛 離，的過程中，可162、2 5 2反覆脫 噪音的發生，讓第=緩ΓΓ’以有效抑制 減至最低。 Μ 1 6、25空轉時的噪音能 M352463 配合之鏈輪形態。 以上所述實施例之揭示係用以說 限制本創作，故舉凡數值之變更切本:作’並非用以 屬本劍作之料。 更―切心件之置換仍應隸 由以上詳細說明，可使熟知本項技藝者明瞭本創 =達成前述目的，實已符合專利法之規定，麦提出專利 【圖式簡單說明】 圖1係本創作之立體分解圖； 圖2係本創作之組合剖視圖； 圖3係本創作磁鐵設置之結構示意圖； 圖4係本創作緩衝件設置之結構示意圖；及 圖5係本創作之使用狀態示意圖。 齒部1 1 護蓋1 2 第一内齒部1 3 1 第二容置部15 第一外齒部1 6 1 【主要元件符號說明】 驅動輪1 擋緣1 1 1 内齒槽1 3 第一容置部1 4 第一齒片16 12 M352463 第一環狀棘齒1 6 2 凸緣2 1 第二外齒部2 3 第二齒片2 5 第二内齒部2 5 1 凹槽2 5 3 0形環2 6 磁鐵2 8 滾珠轴承3 套筒2 螺紋2 2 外螺紋部2 4 螺栓2 5 0 第二環狀棘齒2 5 2 容置槽2 5 4 固定環2 7 緩衝件2 9 13The action of the twisting enables the driving wheel i and the sleeve 2 to form an idling state without being driven by each other. In the process of arbitrarily idling, since each magnet 28 is embedded on the side of the second annular ratchet 2 5 2 and the first annular ratchet 1 6 2, the selected magnets 28 are If the magnetic force is not too large, the effect of adsorbing the first tooth piece 16 can be achieved, so that the sensitivity of the first or second tooth pieces 16 and 25 is two or more. Furthermore, a plurality of cushioning members 2 are provided at the same time as the second annular ratchet 2 5 2 and the %-like ratchet 1 6 2, and the cushioning member 2 is made of PU glue and has good deformation and deformation. The buffering effect, therefore, in the process of flute, 162, 2 5 2 can be repeatedly de-noise, so that the first = slow ΓΓ 'to effectively suppress to a minimum. Μ 1 6、25 Noise during idling M352463 with sprocket form. The disclosure of the above-mentioned embodiments is used to limit the creation of the present invention, so that the change of the numerical value is not intended to be used as a material. The replacement of the incisive parts should still be explained in detail above, so that those skilled in the art can understand that the ingenuity has achieved the above-mentioned objectives, and has already met the requirements of the Patent Law. Fig. 2 is a sectional view of the creation of the present invention; Fig. 3 is a schematic structural view of the setting of the present invention; Fig. 4 is a schematic structural view of the installation of the buffer member; and Fig. 5 is a schematic view showing the state of use of the creation. Tooth 1 1 Cover 1 2 First internal tooth 1 3 1 Second accommodating part 15 First external tooth 1 6 1 [Description of main components] Drive wheel 1 Retaining edge 1 1 1 Internal cogging 1 3 A receiving portion 1 4 first tooth piece 16 12 M352463 first annular ratchet 1 6 2 flange 2 1 second outer tooth portion 2 3 second tooth piece 2 5 second inner tooth portion 2 5 1 groove 2 5 3 0 ring 2 6 magnet 2 8 ball bearing 3 sleeve 2 thread 2 2 external thread 2 2 bolt 2 5 0 second annular ratchet 2 5 2 accommodating groove 2 5 4 fixing ring 2 7 cushion 2 9 13