200817208 九、發明說明： 【發明所屬之技術領域】 特別是指一種可 、，本發明是有關於-種花轂棘輪裝置 增大跳脫阻力的花轂棘輪裝置。 【先前技術】 現有2車是將棘輪機構設計在後輪，而圖1顯示 1見Γ 自行車1是將棘輪機構料在對應曲柄的車 =該變速自行車1包含-車身1卜-圍繞-轴線旋轉 束^ —車身11的後輪12、—間隔該後輪12安裝於該 的讀13、—安I於該後輪12的變速單元14，以 及一設於該車S 11並連接該變速單以4的腳踏機構15。 =腳踏機構15包括—位於該前、後輪13、12間設置於該 身的棘輪裝置2、二根可由使用者帶動的曲柄151、一 設置於該棘輪裝置2的鏈輪152、—套掛於該鏈輪152與該 變速單元U的鏈條153。該變速單元14具有多片大小不一 的㈣片，可_ 153移位套掛，達到變速目的，且該 艾速單兀14與後輪12之間並未設置棘輪機構，兩者是呈 一體連動關係。 > ’閱圖2契圖3’ 4棘輪裝置2具有—可旋轉地設置於 该車身11且二端固接該曲柄151的心軸21、一可隨該心軸 21旋轉的驅動座22、一離合單元23以及一從動單元24。 ^動座22具有四個環設於_外周面的限位槽221，該離 口單7G 23包括四個分別樞接於該等限位槽221巾的擎爪 231以及將違掣爪231部分值推出該限位槽221的彈性 200817208 tl件232。該從動單元24包括一圍繞該軸線且可旋轉地安 裝於該驅動座22的棘輪241，該棘輪241具有一供該鏈輪 152固設的本體242，以及多數個環設於該本體242 一内周 面並供該等掣爪231單向連動的棘齒243。 參閱圖1、圖2、圖3，使用者帶動該等曲柄i 51沿一 旋轉方向A旋轉，而動力依序由該心軸21、該驅動座22、 該掣爪231、該棘齒243、該本體242、該鏈輪152、該鏈 條153、該變速單元14,最後傳遞到達該後輪12，使該變 速自行車1前進。當使用者不帶動該等曲柄151時，該後 輪12因變速自行車1的慣性而轉動，且動力依序由該變速 單元14、該腳踏機構15的鏈條153、該鏈輪152、該本體 242，最後到達該棘齒243。因使用者使該等曲柄Μ〗不旋 轉，所以該驅動座22與該等掣爪231不繞該軸線旋轉，該 棘ui 243沿该旋轉方向a以很小的阻力跳脫滑過該等掣爪 231 〇 該變速自行車1的棘輪裝置2是安裝於該車身u，此 種設計雖然可以達到騎乘者停腳滑行時仍可變速及傳動反 應，為敏銳的功效，但是有一安全上的隱憂，即當使用者 不帶動該等曲柄151而進行滑行時，假設剛好某一擎爪 故障時使該棘齒243無法跳脫該掣爪231，會使該鍵停153 =卡住，連帶會使得職輪12也立即停止㈣，如同緊 急剎車一般，將造成該變速自行車i失控滑倒，導致 全性不佳的缺失。 之間也裝上棘輪機構 而若將該後輪12與變速單元14 200817208 傳統的棘輪後花轂)，打破兩者-體連動的關係，則當 二条153大然卡住％，該後輪12可藉由棘輪機構產生跳 脫=轉，不會產生緊急刹車的狀況。理論上此對策可以解 決則述安全性的問題，卻破壞了 “滑行時仍可變速，，的基 本魏。因騎乘者在變速時，必須使該鍊们53持續運轉 ’可是變速時撥鏈器會施予該鏈们53 -阻力，則該後輪 12極易藉由棘輪機構而跳脫，使該鏈條⑸停滯而變速失时 敗或脫鏈。 故如何提高該變速自行車i的安全性，又能保有“滑 行時仍可變速，，的功能，實乃相《者亟待解決的課題。 【發明内容】 因此’本發明之㈣，即在提供一種可以提高安全性 的可增大跳脫阻力的花轂棘輪裝置。 於疋，本發明可增大跳脫阻力的花轂棘輪裝置適合安 裝於-自行車，該自行車包含—車身、—安裝於該車身的 後輪、-變速單元H設於該車身並連接該變速單元 的腳踏機才冓。該可增域脫阻力的花轂棘輪裝£包含一從 動單元、一離合單元’以及一驅動單元。該從動單元連接 該後輪，並包括一可繞一軸線旋轉的從動座，該從動座具 有環設於一外周面的多數個限位槽與多數個阻力槽。 该離合單元包括多數個分別位於該等限位槽中的掣爪 、至少一彈性7C件，以及多數個分別位於該等阻力槽的阻 力件。每一掣爪具有一樞接於該限位槽中的樞接部，以及 一自該樞接部延伸的嚙合部，該彈性元件將該嚙合部恆推 200817208 出該限位槽。 2驅動單元連接該變速單元，並包括-圍繞該軸線且 可叙^安襄於該從動座的棘輪，該棘輪具有—本體以及 :數個％設於該本體一内周面的棘齒。每一棘齒具有一可 X㈣合部帶動的推動面、—可將該唾合部推向該限位槽 的壓制面H連接該推動面與該壓制面 力件的齒尖。 該後輪因慣性產生 以帶動該從動單元 當該腳踏機構失靈不正常停止時 的巨大力道可使該阻力件跳脫該齒尖 相對該驅動單元轉動進而提高安全性。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合麥考圖式之二個較佳實施例的詳細說明中，將可 清楚的呈現。 在本發明被詳細描述之前，要注意的是，在以下的說 明内容中’類似的元件是以相同的編號來表示。 本發明可增大跳脫阻力的花數棘輪裳置之第一較佳實 施例適合安裝於如圖i所示的_自行車i，該自行車i包含 -車身U、-安裝於該車身u的後輪12、一變速單元14 ’以及一設於該車身11錢接職速單元14的腳踏機構 15。參閱圖4、圖5、圖6，兮w说丄， 该可增大跳脫阻力的花轂棘輪 從動單元4、一離合單元5 裝置包含一心軸單元3、 及一驅動單元6。 该心轴早兀3包括一具有一軸線B的軸本體3卜 200817208 置於戎軸本體31 —端的第一軸承32，以及一設置於該軸本 體31另一端的第二軸承33。 該從動單元4包括一可繞該軸線b旋轉地設置於該第 二軸承33的從動座41，以及一可繞該軸線b旋轉地設置於 該第一軸承32並連接該後輪12的轂殼42。該從動座41固 e又於该轂设42 —側，並具有環設於一外周面的三個限位槽 411與二個阻力槽412，以及一形成於該從動座41外周面沿 徑向朝該軸線B凹設的容件環溝413。每一阻力槽412具有 一取鄰近該軸線B的槽谷414，該容件環溝413與該等限位 槽411與阻力槽412相連通。 4離合單元5包括三個分別位於該等限位槽4丨丨中的掣 爪51、一套設於該容件環溝413中彈性元件52，以及三個 分別位於該等阻力槽412的阻力件53。每一掣爪51具有一 樞接於該限位槽411中的樞接部511，以及一自該樞接部 511延伸的嚙合部512。該彈性元件52為一 c型彈簧，並 ϋ掛於該等掣爪51的樞接部511將該嚙合部512恆推出該 限位槽411。该阻力件53為一滾軸，並平行該轴線Β而躺 置於該阻力槽412中，且受該彈性元件52軸向限位。 该驅動單το 6供該變速單元14的多數鏈輪片（圖未示 )套設，並包括一圍繞該軸線Β且可旋轉地安裝於該從動 座4的棘輪61，該棘輪61具有一本體611以及多數個環設 於該本體611 —内周面的棘齒612。每一棘齒612具有一順 轉時可推動該嚙合部512的推動面613、一逆轉時可將該嚙 合部512推向該限位槽411的壓制面614，以及一連接該推 200817208 動面613與該壓制面614並可觸及該阻力件53的齒尖… ，該齒尖615與該槽谷414間的徑向距離不大於該阻力件 53的直控。 爹閱圖4、圖6及圖卜當使用者踩踏該自行車1的腳 踏機構15運作時，能將動力依序自該變速單元14、該棘輪 61的推動面613、該擎爪51、該從動座4卜該較殼42，最 後傳遞至該後輪12,該後輪12轉動使該自行車！前進。 參閱圖4、圖7及圖！，當使用者不踩踏該自行 腳踏機構15時，該自行車1 平U ^ f貝性刖進產生的動力依序 〇後輪12、該毅殼42、該從動座4卜該阻力件μ、該 棘輪61的齒尖615、該轡诘罝士 μ ρ μ & 構15的鏈條153。速早』、攻後傳遞至該腳踏機 一此時’若該卿踏機構15不正常停止時，連帶使該變速 早與棘輪61停止轉動，而該後輪12慣性產生的 ^道:可帶動該阻力件53跳脫該齒尖615，以帶動該從動 早7C 4相對該驅動單元6餹备 轉動該後輪12將繼續以較大的 阻力轉動使該自行車丨穩定下來。 效：本發明可增大跳脫阻力的花敎棘輪裝置具有以下的功 因為透㈣可增A跳脫阻力的花轂棘輪裝置 =不再與該變速單元14直接連.接在 腳踏機構15睡H/古h士 口此田4 時，該從動單元4仍可相對該驅動單 疋6轉動，因此該後輪12不會發 倒的悴v π „ 个β表生疋王仔止而產生打滑跌 幻的丨月况，因而達到提高安全 10 200817208 二、藉由該等阻力株q α、，， 刀仵μ增大跳脫阻力，當 動該腳踏單元15時， 田便用者不作 °亥寺阻力件53仍能帶動該驅動單元6 轉動，且鏈條15 3不合JJ] | μ抑 曰因撥鏈态之阻力而停滯，因此該變 速單几14也能進行變靖 ,, 、、動作，而達到“滑行時仍可變速 的功效。 ::圖8,本發明可增大跳脫阻力的花較棘輪裝置之第 Τ較“施例大致與該該第—較佳實施例相 地方是該離合單元5的彈性 ^ .t 凡件Μ數目是三個，該從動座 —具有環設於-外周面的三個限位槽4ιι與三個阻力槽412 針=彈性元件52是採彈片型態，其相反二端分別抵住所 對應的該限位槽411盥該型爪ς】 〃、亥隼爪51 ’使該掣爪51能單向連動 该驅動單元6。藉此，同 7 達1彳δ亥弟一實施例所述的功 效。 惟以上所述者，僅為本發明之較佳實施例而已，當不 =以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作夕銪 合所作之間早的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是-側視圖’說明習知—種變速自行車； •圖2是—剖視後視圖’說明該變速自行車一腳踏機構 省略一鏈條； 圖3是-剖視側視圖，說明該腳踏機構的内部構造； —圖4是一剖視前視圖，說明本發明可增大跳脫阻力的 花轂棘輪裝置的一第一較佳實施例； 11 200817208 少 义緣弟一較佳實施例的一局部立體分解_，說明 '動座、一離合單元以及一驅動單元； 夕圖6是該第一較佳實施例的一局部側視圖，說明動力 夕數個推動面傳遞至多數個掣爪； 圖 7 9 、： 、择石 疋一類似圖6的視圖，說明動力自三個阻力件傳 遞至—棘輪的多數個齒尖；以及 圖 8 b — 花轂献认疋—局部側視圖，說明本發明可增大跳脫阻力的 破置的一第二較佳實施例。 v 12 200817208 【主要元件符號說明】 3 ****** …·心軸單元 511 ·*· 板接cr[5 31 "… •…轴本體 512… •…嚙合部 32♦…， ….第一軸承 52····· …·彈性元件 33*·… …·第二軸承 53 ·…. •…阻力件 c....... • * · · 5叵番/τ留 $ 4 ...... …伙動早兀 0 ,¾¾ 7U 41 ··… •…從動座 61 "… …·棘輪 411… •…限位槽 611… …·本體 412… •…阻力槽 612… •…棘齒 413… •…容件環溝 613… •…推動面 414… …·槽谷 614… •…壓制面 42*·… •…轂殼 615… —齒乂 C ...... ^ t . t -τί" Ό...... J — s早兀 JD •…罕田泳 51 *…· •…掣爪 13200817208 IX. Description of the invention: [Technical field to which the invention pertains] In particular, the present invention relates to a flower hub ratchet device that increases the tripping resistance of a flower hub ratchet device. [Prior Art] The existing 2 car is designed with the ratchet mechanism on the rear wheel, and FIG. 1 shows 1 see Γ The bicycle 1 is the car that feeds the ratchet mechanism to the corresponding crank = the variable speed bicycle 1 contains - the body 1 - the surrounding - the axis a rotating beam, a rear wheel 12 of the vehicle body 11, a rear shifting wheel 12, a shifting unit 14 mounted on the rear wheel 12, and a vehicle S11 coupled to the shifting unit Take the pedal mechanism 15 of 4. The pedal mechanism 15 includes a ratchet device 2 disposed between the front and rear wheels 13 and 12, two cranks 151 that are user-driven, a sprocket 152 disposed on the ratchet device 2, and a sleeve. The chain 152 is attached to the chain 152 and the chain 153 of the shifting unit U. The shifting unit 14 has a plurality of (four) pieces of different sizes, which can be slidably sleeved to achieve the purpose of shifting, and the ratchet mechanism is not disposed between the AW speed unit 14 and the rear wheel 12, and the two are integrated. Linkages. > 'Reading FIG. 2' FIG. 3' 4 ratchet device 2 has a spindle 21 rotatably disposed on the vehicle body 11 and having the ends affixed to the crank 151, a drive base 22 rotatable with the spindle 21, A clutch unit 23 and a slave unit 24. The movable seat 22 has four limiting slots 221 disposed on the outer peripheral surface of the outer peripheral surface, and the outgoing single 7G 23 includes four claws 231 pivotally connected to the limiting slots 221, respectively, and a portion of the illegal claw 231 The value pushes out the elastic 200817208 tl piece 232 of the limiting slot 221 . The driven unit 24 includes a ratchet 241 that is rotatably mounted to the drive base 22 about the axis. The ratchet 241 has a body 242 for the sprocket 152 to be fixed, and a plurality of rings are disposed on the body 242. The inner peripheral surface is provided with ratchet teeth 243 for the one-way linkage of the claws 231. Referring to FIG. 1 , FIG. 2 and FIG. 3 , the user drives the cranks i 51 to rotate in a rotation direction A, and the power is sequentially from the spindle 21 , the driving seat 22 , the pawl 231 , the ratchet 243 , The body 242, the sprocket 152, the chain 153, and the shifting unit 14 are finally delivered to the rear wheel 12 to advance the shifting bicycle 1. When the user does not drive the cranks 151, the rear wheel 12 rotates due to the inertia of the shift bicycle 1, and the power is sequentially driven by the shifting unit 14, the chain 153 of the pedal mechanism 15, the sprocket 152, and the body. 242, finally reaching the ratchet 243. Since the user does not rotate the cranks, the driver seat 22 and the pawls 231 do not rotate about the axis, and the spine 243 detaches along the rotation direction a with a small resistance. The claw 231 〇 the ratchet device 2 of the variable speed bicycle 1 is mounted on the vehicle body u. Although the design can achieve the speed change and the transmission reaction when the rider stops sliding, it has a keen effect, but has a safety concern. That is, when the user does not drive the cranks 151 to perform the taxiing, it is assumed that the ratchet teeth 243 cannot jump off the pawl 231 when a certain claw fails, which causes the button to stop 153 = jam, which will cause the job. The wheel 12 is also immediately stopped (four), as in the case of emergency braking, which will cause the shifting bicycle i to slip out of control, resulting in the loss of total poorness. If the ratchet mechanism is also installed between the rear wheel 12 and the shifting unit 14 200817208, the traditional ratchet rear hub) breaks the relationship between the two and the body, and when the two 153 sticks to the %, the rear wheel 12 The ratchet mechanism can generate a trip = turn without causing an emergency brake. In theory, this countermeasure can solve the problem of safety, but it destroys the basic Wei which can still be changed when sliding. Because the rider must keep the chain 53 running when shifting, but the shifting chain The device will apply the 53-resistance to the chain, and the rear wheel 12 can easily jump off by the ratchet mechanism, causing the chain (5) to stagnate and lose speed or lose the chain. Therefore, how to improve the safety of the variable speed bicycle i Moreover, it retains the function of "the speed can be changed while sliding, and it is a subject that needs to be solved." SUMMARY OF THE INVENTION Therefore, (4) of the present invention provides a flower hub ratchet device which can improve the safety and can increase the jumping resistance. In the present invention, the flower hub ratchet device capable of increasing the jumping resistance is suitable for being mounted on a bicycle, the bicycle including a body, a rear wheel mounted to the body, a shifting unit H being disposed on the body and connected to the shifting unit The pedal machine is awkward. The flower hub ratchet that can increase the resistance of the field includes a driven unit, a clutch unit, and a driving unit. The driven unit is coupled to the rear wheel and includes a driven seat rotatable about an axis, the driven seat having a plurality of limiting slots and a plurality of resisting grooves disposed on an outer peripheral surface. The clutch unit includes a plurality of pawls respectively located in the limit slots, at least one elastic 7C member, and a plurality of resistance members respectively located in the resistance grooves. Each of the claws has a pivoting portion pivoted in the limiting slot, and an engaging portion extending from the pivoting portion, the elastic member constantly pushing the engaging portion out of the limiting slot. The driving unit is coupled to the shifting unit and includes a ratchet that surrounds the axis and is mountable to the driven seat. The ratchet has a body and a plurality of ratchet teeth disposed on an inner peripheral surface of the body. Each of the ratchets has a pushing surface that can be driven by the X (four) joint, and the pressing surface H that can push the salvage portion toward the limiting groove connects the pushing surface with the tooth tip of the pressing surface member. The rear wheel is driven by inertia to drive the driven unit. When the pedal mechanism fails to stop abnormally, the large force force can cause the resistance member to trip off the tooth tip and rotate relative to the driving unit to improve safety. [Embodiment] The foregoing and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention. Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. The first preferred embodiment of the present invention for increasing the number of tripping resistance ratchets is suitable for mounting on a bicycle i as shown in Fig. i, the bicycle i comprising a body U, mounted behind the body u The wheel 12, a shifting unit 14', and a footrest mechanism 15 provided on the body 11 for the pick-up unit 14. Referring to FIG. 4, FIG. 5 and FIG. 6, 花w says that the flower hub ratcheting unit 4 and the clutch unit 5 which can increase the jumping resistance include a spindle unit 3 and a driving unit 6. The mandrel 3 includes a shaft body 3 having an axis B, a first bearing 32 placed at the end of the shaft body 31, and a second bearing 33 disposed at the other end of the shaft body 31. The driven unit 4 includes a driven seat 41 rotatably disposed about the axis b of the second bearing 33, and a rotatably disposed about the axis b of the first bearing 32 and connected to the rear wheel 12 Hub shell 42. The driven seat 41 is further disposed on the side of the hub 42 and has three limiting slots 411 and two resistance slots 412 disposed on an outer peripheral surface, and a peripheral groove formed on the outer peripheral surface of the driven seat 41. A container ring groove 413 recessed radially toward the axis B. Each of the resistance grooves 412 has a groove valley 414 adjacent to the axis B, and the container ring groove 413 communicates with the resistance groove 411 and the resistance groove 412. The clutch unit 5 includes three pawls 51 respectively located in the limit slots 4, a set of elastic members 52 disposed in the pocket ring 413, and three resistances respectively located in the resist grooves 412. Item 53. Each of the claws 51 has a pivoting portion 511 pivotally connected to the limiting slot 411, and an engaging portion 512 extending from the pivoting portion 511. The elastic member 52 is a c-shaped spring, and the pivoting portion 511 hooked on the claws 51 constantly pushes the engaging portion 512 out of the limiting groove 411. The resisting member 53 is a roller and lies in the resistance groove 412 parallel to the axis and is axially constrained by the elastic member 52. The driving unit το 6 is provided for a plurality of sprocket pieces (not shown) of the shifting unit 14 and includes a ratchet 61 rotatably mounted on the driven seat 4 around the axis, the ratchet 61 having a The body 611 and a plurality of ratchet teeth 612 disposed on the inner circumferential surface of the body 611. Each of the ratchet teeth 612 has a pushing surface 613 that can push the engaging portion 512 when it is rotated, a pressing surface 614 that can push the engaging portion 512 toward the limiting slot 411 when reversing, and a connection of the pushing 200817208 moving surface The pressing surface 613 and the pressing surface 614 can touch the tooth tip of the resistance member 53. The radial distance between the tooth tip 615 and the groove 414 is not greater than the direct control of the resistance member 53. Referring to FIG. 4, FIG. 6 and FIG. 4, when the user steps on the pedal mechanism 15 of the bicycle 1, the power can be sequentially transmitted from the shifting unit 14, the pushing surface 613 of the ratchet 61, the pawl 51, and the The driven seat 4 is the shell 42 and finally passed to the rear wheel 12, and the rear wheel 12 rotates to make the bicycle! go ahead. See Figure 4, Figure 7 and Figure! When the user does not step on the self-operating pedal mechanism 15, the power generated by the bicycle 1 is U f 贝 依 依 依 依 依 依 、 、 、 、 、 、 、 12 12 12 12 12 42 42 42 42 阻力 阻力 阻力 阻力 阻力 阻力 阻力 阻力 阻力 阻力 阻力 阻力The tooth tip 615 of the ratchet 61 and the chain 153 of the gentleman μ ρ μ & Quickly and early, after the attack, the pedal is transmitted to the pedal machine. At this time, if the Qing-step mechanism 15 is not normally stopped, the shifting is caused to stop the rotation and the ratchet 61 is stopped, and the rear wheel 12 is inertially generated: The resistance member 53 is caused to jump off the tooth tip 615 to drive the driven early 7C 4 to rotate relative to the driving unit 6 . The rear wheel 12 will continue to rotate with greater resistance to stabilize the bicycle cymbal. Effect: The flower ratchet device capable of increasing the tripping resistance of the present invention has the following functions because the flower hub ratchet device capable of increasing the A tripping resistance is no longer directly connected to the shifting unit 14 and is connected to the pedal mechanism 15 When sleeping H/古h士口田田4, the driven unit 4 can still rotate relative to the driving unit 6, so that the rear wheel 12 does not fall down 悴v π „ β表表疋王仔Produce a slippery and sinister situation, thus achieving safety. 200817208 2. By the resistance strains q α,,, 仵μμ increase the tripping resistance, when the pedal unit 15 is moved, the user is used. If the resistance member 53 is not used, the driving unit 6 can still be rotated, and the chain 15 3 does not meet the JJ] | μ 曰 停 曰 曰 曰 曰 曰 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , And action, and achieve the effect of "speed shifting while sliding. :: Fig. 8, the invention can increase the jumping resistance of the flower compared to the third of the ratchet device. "The embodiment is substantially the same as the first preferred embodiment. The elasticity of the clutch unit 5 is. The number is three, the driven seat has three limiting slots 4ιι and four resistance grooves 412 which are arranged on the outer peripheral surface. The needles are elastic type elements 52, and the opposite ends are respectively opposite to the corresponding ones. The limiting slot 411 盥 盥 隼 隼 隼 隼 隼 隼 隼 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' However, the above is only the preferred embodiment of the present invention, and does not limit the scope of the implementation of the present invention, that is, the context of the present invention and the content of the invention are made early. Equivalent changes and modifications are still within the scope of the present invention. [Simplified Schematic] FIG. 1 is a side view 'illustrating a conventional shifting bicycle; FIG. 2 is a cross-sectional rear view' The shifting bicycle pedal mechanism omits a chain; FIG. 3 is a cross-sectional side view illustrating the The internal structure of the stepping mechanism; FIG. 4 is a cross-sectional front view showing a first preferred embodiment of the flower hub ratchet device capable of increasing the jumping resistance of the present invention; 11 200817208 A partial exploded view _, illustrating a 'moving seat, a clutch unit, and a driving unit; FIG. 6 is a partial side view of the first preferred embodiment, illustrating that the power of the push surface is transmitted to the plurality of claws Figure 7 9 , : , 择石疋 A view similar to Figure 6, illustrating the power transmitted from the three resistance members to the majority of the tip of the ratchet; and Figure 8 b - the flower hub 疋 局部 - partial side view, illustrating The present invention can increase a second preferred embodiment of the breaking resistance. v 12 200817208 [Main component symbol description] 3 ****** ...· mandrel unit 511 ·*· board connection cr[5 31 "... •...shaft body 512... •...engagement part 32♦..., ....first bearing 52·······elastic element 33*·...·second bearing 53 ·.... c....... • * · · 5叵番/τ留$4 ............ 伙早兀0,3⁄43⁄4 7U 41 ·· •...Driver 61 "... Ratchet 411... •...Restriction slot 611...·body 412... •...Resistance groove 612... •...ratchet 413... •...receiving ring groove 613... •...Pushing surface 414... ... trough 614... •...pressing surface 42*·... •... hub shell 615... - 乂C ...... ^ t . t -τί" Ό...... J — s early兀JD •...罕田泳51 *...· •...掣13