M315660 八、新型說明： 【新型所屬之技術領域】 本創作是關於-種輪較，且特別是關於一種適用於自行車之輪較。 【先前技術】 在1970年代時，美國興起了一 運動，纖種運_自行車被稱為黯T==e =) _較小、輪胎_粗，且比麵觀也和越 === , ^5ij7 板域秘響，餅邱魏纽賽太過單 了四個踏板’玩_就可赠助這幾個踏板 / 人βΜ!自料拿到平地，滑板的場地纽，而且玩的^式 比/月板更^跳件更南，更刺激了，而此種自行車的名字也從ΒΜχ 自4亍車受成了 BMX freestyle自行車。 輪14旋轉’使自行車10向前推進。此外，踏板19與踏板19,則分別 奪設於後車輪14與前車輪14,上，供使用者進行花式表演用。 圖2所緣示為一種用於BMX freestyle自行車的輪轂，此輪轂1〇〇 主要由心轴110、輪轂本體120、棘輪130與多個軸承140所構成。輪 轂本體120與棘輪130是套設在心軸110上，且輪轂本體120與棘輪 請先參照圖1，圖丨所緣示為一種市面上之BMXfre卿ie自行車， 此^行車10,包括車架u、後車輪14、前車輪14，與傳動系統15，其 中前車輪14’與後車輪14是分別組裝於車架u之前懸吊架12與後懸 吊架13上。傳動系統15包括一踏板16、一鏈輪17、一鏈條18與一 輪轂100 ’使用者藉由踩動踏板16而帶動鏈輪17旋轉，鏈輪17的旋 轉會帶動鏈條18轉動，而鏈條18的轉動則讓輪轂本體12〇帶動後車 .M315660 請=利用軸承140而與心轴11〇進行滾動連接。圖2崎示之轴 ί ball bearing)^ 14〇 地承，徑向上的壓力，細並不能良好地對轴向上的壓力進 了承^。但疋’ BMX f細yle自行車的使用者常常糊套設心轴⑽ 進行花式表演丄而使軸承140需承受較強的轴向壓力，這 二二承140的損壞。如此""來，便需要常常更換軸承140， 增加使用者的成本。 蚀田^ t"何使自行車的輪承受較大的軸向壓力明加輪轂的 使用料，禮得本領域具有通常知識者去思量地。 【新型内容】 '' ，創作主要目的係提供—種輪轂，其主要在於讓自行車的輪穀能 増峨的使用壽命’且製造成本較低，而輪 ^ 了達成上述目的與其他目的，本創作提供 一=、一，本體、一棘輪、一第一滚珠組、一第二滚珠組=第 ^ Γ弟二錐體、—第三滾珠組與—第四滾珠組。心軸設置有環 妾Γ:是—體成型於心轴上，且凸肋具有-第-抵ΐ: 2抵iir ΓΓ本體套設於"軸上，輪轂本體之内部具有-第 五枯二了 ί四抵接部。棘輪套設於心軸上，棘輪之内部具有一第 物是:置:ί六ΐί部。第一滾珠組由多個第—滾珠組成，第-滾 一滚部與第四抵接部之間’且第—抵接部施加於第 二滚珠組成:之^成一第r傾斜角度。第二滾珠組由多個第 一# : 一珠組是設置在第二抵接部與第五抵接部間，且第 :，施加於第二滾珠的正向力與心軸之間呈—第二二：且： 、.體套设於心軸的其中一端上，第一錐體之外部具有-第七抵接 • M315660 部。第一錐體套設於心轴的另外一端上，第二錐體之外部具有一第八 抵接部。第三滾珠組由多個第三滾珠組成，第三滾珠組是設置在第六 抵接部與第七抵接部之間，且第七抵接部施加於第三滾珠的正向力與 〜軸之間呈一第三傾斜角度。第四滾珠組由多個第四滾珠組成，第四 ^珠組是設置在第三抵接部與第八抵接部之間，且第八抵接部施加於 第四滾珠的正向力與心軸之間呈一第四傾斜角度。 於上述之輪轂中，第一滾珠、第二滾珠、第三滾珠與第四滚珠皆 經過研磨而製成。 於上述之輪轂中，第一傾斜角度至第四傾斜角度較佳是介於60。 與65°之間。〜 立於上述之輪轂中，更包括一第一珠碗，其中第一珠碗的外部及内 部分別與第四抵接部及第一滾珠組相抵接。而且，第一珠碗的材質為 鋼，而輪轂本體的材質為鋁。 立y於上述之輪轂中，更包括一第二珠碗，其中第二珠碗的外部及内 口P刀別與第二抵接部及第四滾珠組相抵接。而且，第二珠碗的材質例 如為鋼，而輪轂本體的材質為鋁。 一於上述之輪轂中，第一抵接部為配合第一滾珠組的圓弧凹槽，第 一抵接部為配合第二滚珠組的圓弧凹槽，第七抵接部為配合第三滚珠 、、且的圓弧凹槽，第八抵接部為配合第四滾珠組的圓弧凹槽。 ;由於在本創作之輪轂中，施加於滾珠的正向力與心轴之間呈一傾 斜的關係故較此承受軸向的壓力，從而增加輪轂的使用壽命。而且， 在本創作之輪轂中，由於不使用軸承，所以可擁有較低的製造成本； 由於不使用軸承’滾珠的尺寸可以較大，滾珠的數目也可以增多， 而使輪穀整體的強度提高。此外，凸肋以一體成型的方式形成於心轴 上’可以增強輪轂本體與棘輪之間的同心度，而讓輪轂的偏擺度減少， .M315660 並，順滑度提高。另外，由於第—抵接部、第二抵接部、第七抵接部 與第八抵接部為分耻合第—滾珠組 '第二滾珠組、第三滾珠組與第 四滾珠組的圓弧凹槽’所以能增加滚珠與抵接部的接觸面積，故能 滾珠的使用壽命提高。 為使熟悉該項技藝人士瞭解本辦之目的、特徵及功效，兹藉由 下述具體實酬’並配合騎之圖式，對本創作詳加制如后。曰 【實施方式】 圖3所繪示為本實施例之—輪轂的剖關，圖4所繪示為輪數之 •零件爆炸圖。請同暗參照圖3與圖4，輪轂2〇〇包括一心轴⑽、一輪 f本體220、-棘輪230、一第一滾珠組24〇、一第二滾珠組25〇、一 tH260 \一第二錐體270、一第三滾珠組280與一第四滚珠組 。八中，在心軸210上設置有環狀的一凸肋212，此凸肋212是一 體^型於心軸210上，凸肋212具有呈凹槽狀的一第一抵接部⑽與 -第=抵接部212b，此第-抵接部212a與第二抵接部㈣為分別配 合於第-滾珠組240與第二滾珠組25〇的圓弧凹槽。輪轂本體22〇套 ，设於心軸210上，輪轂本體22G之内部具有呈凹槽狀的一第三抵接部 222與-第四抵接部224。棘輪23〇套設於心軸21〇上，棘輪23〇之内 邓具有王凹槽狀的-第五抵接部232與一第六抵接部说，且棘輪 上設置有-鏈輪238，此鏈輪238上可套設有一鏈條（如圖i所示之 ，條)8)。當然本領域具有通常知識者也可在棘輪23〇上設置多個直 仅不專的鍵輪，以提供變速之功能。 ^第-滾珠組24〇主要由多個第—滾珠242組成，第一滾珠組24〇 了又置，第抵接部212a與第四抵接部224之間，且第一抵接部皿 施=於第-滾珠242的正向力&與心轴21〇間呈一第一傾斜角度… 此第-傾斜角度Θ々佳為介於60。與仍。之間。另外，第二滾珠組 、M315660 250主要由多個第二滾珠252组成，此第 滾珠252的正向力n2與心轴21〇之間呈一第二 力=- 傾斜角度心較佳為介於60。與65。之間。 …又2此弟一 另外，第-錐體260套設於心軸21〇的其中 之外部具有呈凹槽狀的-第七抵接部262，=第—錐體細 卜々鈿上’此第一錐體270之外部具有呈凹槽狀的一第八抵接部7 此第八抵接部272為配合第四滾珠組的圓弧凹槽。第三滾^奶 主要由多個第二滾珠282組成，此第三滾珠組是設置在、第 部234與第七抵接部262之間，第七抵接部262施加於第三滾珠淑 ^向力N3與心軸21〇之間呈—第三傾斜角度〜此第三傾斜角产 Θ3較佳為介於60。與65。之間。第四滾珠組-主要由多個第四^ $ $組成第四滾珠組29〇是設置在，三抵接部從與^_ 口 之間，第八抵接部272施加於第四滾珠292的正向力n4與心轴 210之間呈-第四傾斜角度^，此第四傾斜角度〜較佳為介於⑻。 與65。之間。 、 由於施加於第一滚珠242至第四滾珠292的正向力Ni〜N4與心軸 210之間呈一傾斜的關係，此輪轂200相較於習知的輪鼓1〇〇(請參照 圖2)較能承受轴向的壓力。所以，相較於習知的輪鼓1〇〇，輪較2〇〇 具有較長的使用壽命。 而且’在習知中’輪轂本體12〇與棘輪㈣皆是利用軸承14〇與 心軸no進行滾動連接，而軸承14〇主要是由外層體142、内層體146 與夕個滾珠144所構成。然而，在本實施例中，輪轂本體220與棘輪 23〇則是利用第一滾珠組240至第四滚珠組290與心軸210進行滾動 連接。從圖2與圖3可知’本實施例之輪轂200相較於習知的輪穀1〇〇 M315660 少了外層體142與内層體146的設置，因此擁有較低的製造成本。 此外，由於輪轂200少了外層體142與内層體146的設置，所以 相較於輪轂100，滾珠的尺寸可以較大，且滾珠的數目也可以增多。 例如，在第二滚珠組250中，第二滾珠252之個數為13個，且^二滚 珠252之直徑為4.6mm，而在習知之輪轂1〇〇中，位於相對位置的軸 承140之滾珠數為10個，而滾珠144的直徑大小為4 〇mm。由於輪轂 200中之滾珠數較多，且滾珠的尺寸也較大，所以可增加輪轂2〇〇整 體的強度。 φ 另外，凸肋212以一體成型的方式形成於心軸21〇上，則可以增 強輪轂本體22〇與||:輪23〇之間的同心度。因為若凸肋犯是利用鎖 合的方式固定在心軸21〇上，則凸肋212與心轴21〇之間必有餘隙 (clearance)的產生，而造成輪轂本體22〇與棘輪23〇之間的同心度不 佳。然而，由於在本實施例中，凸肋212是以一體成型的方式形成於 心軸210上，凸肋212與心軸210之間不會有餘隙(dearanee)的產生， 所以可以增強輪轂本體22〇與棘輪23〇之間的同心度，而同心度的增 加可以使輪轂2〇〇的偏擺度減少，並使順滑度提高。而且，較佳的是， 第一滚珠242、第二滾珠252、第三滾珠272與第四滚珠282皆是經過 ⑩研磨而製成的滾珠，因此可使輪轂2〇〇的順滑度更加提高。 士於輪慕又2⑻中，輪轂本體220為體積最龐大的零件，為了減輕輪 較200整體的重量，一般來說是使用銘作為輪轂本體220的材質。然 而，由於第-滾珠242的材質為鋼，若讓第一滾珠242與輪轂本體21〇 錢進行接觸，當第—滾珠242在滾動時容易造成輪較本體12〇的磨 損，、I:幵7所以，車父佳是在輪轂2〇〇中設有一第一珠碗，此第一 珠碗310的外部及内部分別與第四抵接部似及第一滾珠組施相抵 接。^此一來，當第一滾珠242在滾動時，輪轂本體120便較不易受 到磨損及變形。另外，在輪轂2〇〇中，較佳的是還設有-第二珠碗320， 11 • M315660 此第二珠碗320❺外部及内部分別與第三抵接部⑽及第四滾珠組 290相抵接。由於第二珠碗320的功用與第一珠碗31〇相類似，故在 此便不再詳加敛述。 在棘輪230 _L還5又置有夕個棘爪236，這些棘爪236例如是以環 繞的方式且等間隔地裝設在棘輪23G上。此外，在輪轂本體22〇的内 部运裝設有-内齒環226 ’此内齒環226是藉由外部的螺紋⑽與輪 毅本體220内部的觀施相鎖合後而固定在輪較本體22〇的内部。 由，4可知’當棘輪23〇以順時針方向進行旋轉時，棘爪a6會與内 齒環226之内齒相咬合’而使内齒環226進行轉動，當内齒環226轉 動時’也會連帶使輪轂本體22〇進行旋轉。而當該棘輪23〇繞著另外 一方向（即：逆時針方向）進行旋轉時，該棘爪236會順滑過内齒環 226之内齒’而使棘輪230空轉。 日另外’輪毅200還包括防塵j裒33〇與防塵環33〇,，其中防塵環別 =設於輪轂本體220與棘輪23G之間，用喊合輪轂本體22〇與棘 ^體°另ί ’防?環33g’則是裝設於_本體220與第二 ’用以密合輪較本體22〇與第二錐體27〇間的空隙，上 塵》330與防塵j衣330’皆是用以防止外部的灰塵進入輪轂2〇〇 之p/:上由於在本創作之錄巾’施加於滾珠的正向力與心轴 係，故較能承受軸向的壓力，從而增加輪轂的使用 ΐί創作之輪㈣’由於不使用軸承，所以可擁有較低 也’ ☆不使用轴承’滾珠的尺寸可以較大，滚珠的數目 式；吏輪較整體的強度提高。此外，凸肋以—體成型的方 二·^^ I :可以增強輪穌體與棘輪之間的同心度，而讓輪轂 立ΐίίΐ 滑度提高。另外，由於第—抵接部、第二抵接 。弟七抵接梢第从接部為分觀合第—滾珠組、第二滾珠組、 12 、M315660 第三滾珠組與第四滾珠組的圓弧凹槽，所以能增加滾珠與抵接部的接 觸面積，故能使滾珠的使用壽命提高。 、'北ί然本!!作仏频實關揭絲上’财所揭露的具體實施例 ί鬥內以，本創作’任何熟悉此技藝者’在不脫離本創作之精神和 作之觀# ’本_之賴賴t視後附之憎糊朗所 【圖式簡單說明】 圖1所繪示為#種市面上之BMXfreestyle自行車。 圖2所緣轉—细於BMX freestyle自行車的輪敎。 圖3所繪示為本實施例之一輪轂的剖面圖。 圖4所緣示為輪穀之零件爆炸圖。 【主要元件符號說明】 1〇:自行車 11 :車架 12 :前懸吊架 13 :後懸吊架 :後車輪 14’ ：前車輪 15 :傳動系統 13 、M315660 16 :踏板 17 :鏈輪 18 :鏈條 19 :踏板 19’ ：踏板 100 :輪轂 110 :心轴 120 :輪轂本體、 130 :棘輪 140 :軸承 142 :外層體 144 :滾珠 146 :内層體 200 :輪轂 210 :心轴 212 :凸肋 212a:第一抵接部 212b :第二抵接部 220 :輪轂本體 222 :第三抵接部 M315660 224 :第四抵接部 226 :内齒環 220a、226a :螺紋 230 :棘輪 232 :第五抵接部 234 :第六抵接部 236 :棘爪 238 :鏈輪 240 :第一滚珠組 242 :第一滾珠 250 :第二滚珠組 252 :第二滚珠 260 :第一錐體 262 :第七抵接部 270 :第二錐體 272 :第八抵接部 280 ··第三滾珠組 282 :第三滾珠 290 :第四滾珠組 292 :第四滾珠 M315660 310 :第一珠碗》 320 ··第二珠碗 330、330, ··防塵環 Νι〜N4 ··正向力 0r^4:第一傾斜角度〜第四傾斜角度M315660 VIII. New description: [New technical field] This creation is about the kind of wheel, and especially about a wheel suitable for bicycles. [Prior Art] In the 1970s, the United States raised a sport, the fiber type _ bicycle was called 黯T==e =) _ small, tire _ thick, and more than the face ===, ^ 5ij7 plate domain secret, cake Qiu Wei New Zealand too single a four pedals 'play _ can give these pedals / people β Μ! Self-picked to the flat, skateboarding venue, and play ^ style ratio The moonboard is more southward and more exciting, and the name of this bicycle has also been converted into a BMX freestyle bicycle from the 4th car. The wheel 14 is rotated 'to advance the bicycle 10 forward. Further, the pedal 19 and the pedal 19 are respectively taken on the rear wheel 14 and the front wheel 14, for the user to perform a fancy performance. 2 is a perspective view of a hub for a BMX freestyle bicycle that is primarily comprised of a mandrel 110, a hub body 120, a ratchet 130, and a plurality of bearings 140. The hub body 120 and the ratchet wheel 130 are sleeved on the mandrel 110, and the hub body 120 and the ratchet wheel are first referred to FIG. 1. The figure is shown as a BMXfreqingie bicycle on the market, and the vehicle 10 includes a frame u. The rear wheel 14, the front wheel 14, and the transmission system 15, wherein the front wheel 14' and the rear wheel 14 are respectively assembled on the suspension frame 12 and the rear suspension frame 13 before the frame u. The transmission system 15 includes a pedal 16, a sprocket 17, a chain 18 and a hub 100. The user drives the sprocket 17 to rotate by stepping on the pedal 16. The rotation of the sprocket 17 causes the chain 18 to rotate, and the chain 18 The rotation of the hub body 12〇 drives the rear vehicle. M315660 = use the bearing 140 to make a rolling connection with the mandrel 11〇. Figure 2: The axis of the ί ball bearing) ^ 14〇 The ground bearing, the pressure in the radial direction, does not well support the pressure in the axial direction. However, the user of the 疋' BMX f fine yle bicycle often sets the mandrel (10) to perform a fancy performance, so that the bearing 140 is subjected to strong axial pressure, and the damage of the two bearings 140. In this way, the bearing 140 needs to be replaced frequently, increasing the cost of the user. Eclipse field ^ t" How to make the wheel of the bicycle withstand the large axial pressure of the use of the wheel of the wheel, the courtesy of the field of ordinary knowledge to think about. [New content] '', the main purpose of the creation is to provide a kind of wheel hub, which is mainly to make the bicycle's wheel valleys have a long service life and the manufacturing cost is low, and the wheel achieves the above purpose and other purposes, the creation A =, a body, a ratchet wheel, a first ball group, a second ball group = a second brother, a third ball group and a fourth ball group are provided. The mandrel is provided with a ring: it is formed on the mandrel, and the rib has a -first-butting: 2 to iir ΓΓ the body is sleeved on the "axis, and the inside of the hub body has a -5th The ί four abutment. The ratchet is sleeved on the mandrel, and the inside of the ratchet has a first object: set: ί六ΐ 部. The first ball group is composed of a plurality of first balls, and the first roll portion and the fourth abutting portion are disposed, and the first abutting portion is applied to the second ball to form an irth angle. The second ball group is composed of a plurality of first #: a bead set is disposed between the second abutting portion and the fifth abutting portion, and: a positive force applied between the second ball and the mandrel is - The second two: and: the body sleeve is set on one end of the mandrel, and the outer portion of the first cone has a - seventh abutment • M315660. The first cone is sleeved on the other end of the mandrel, and the outer portion of the second cone has an eighth abutment. The third ball group is composed of a plurality of third balls, the third ball group is disposed between the sixth abutting portion and the seventh abutting portion, and the seventh abutting portion is applied to the third ball and the positive force and the There is a third angle of inclination between the shafts. The fourth ball group is composed of a plurality of fourth balls, the fourth ball group is disposed between the third abutting portion and the eighth abutting portion, and the positive force of the eighth abutting portion is applied to the fourth ball There is a fourth angle of inclination between the mandrels. In the above-described hub, the first ball, the second ball, the third ball, and the fourth ball are all ground. In the above-described hub, the first to fourth inclination angles are preferably 60. Between 65°. ~ Standing in the above-mentioned wheel hub, further comprising a first bead bowl, wherein the outer and inner portions of the first bead bowl abut against the fourth abutting portion and the first ball group, respectively. Moreover, the material of the first bead bowl is steel, and the material of the hub body is aluminum. The y is in the above-mentioned wheel hub, and further comprises a second bead bowl, wherein the outer and inner ports of the second bead bowl are abutted against the second abutting portion and the fourth ball group. Further, the material of the second bead bowl is, for example, steel, and the material of the hub body is aluminum. In the above-mentioned hub, the first abutting portion is a circular arc groove for the first ball group, the first abutting portion is a circular arc groove for the second ball group, and the seventh abutting portion is for the third portion. The circular arc groove of the ball and the eighth abutting portion is a circular arc groove matching the fourth ball group. Since in the hub of the present invention, the positive force applied to the ball is inclined with respect to the mandrel, the axial pressure is increased, thereby increasing the service life of the hub. Moreover, in the wheel hub of the present invention, since the bearing is not used, the manufacturing cost can be low; since the size of the ball can be large without using the bearing, the number of balls can be increased, and the strength of the whole trough can be improved. . In addition, the ribs are integrally formed on the mandrel. The concentricity between the hub body and the ratchet can be enhanced, and the yaw of the hub can be reduced, and the smoothness of the M315660 is improved. In addition, the first abutting portion, the second abutting portion, the seventh abutting portion, and the eighth abutting portion are the shame-combined-ball group 'the second ball group, the third ball group, and the fourth ball group The arc groove 'can increase the contact area between the ball and the abutting portion, so the service life of the ball can be improved. In order to familiarize the person skilled in the art with the purpose, characteristics and efficacy of the Office, the following specific remunerations and the pattern of riding are used to add detail to the creation. [Embodiment] FIG. 3 is a cross-sectional view of the hub of the present embodiment, and FIG. 4 is a partial exploded view of the number of wheels. Referring to FIG. 3 and FIG. 4, the hub 2 includes a mandrel (10), a wheel f body 220, a ratchet 230, a first ball set 24A, a second ball set 25A, a tH260, and a second. The cone 270, a third ball set 280 and a fourth ball set. In the eighth embodiment, an annular rib 212 is disposed on the mandrel 210. The rib 212 is integrally formed on the mandrel 210. The rib 212 has a first abutting portion (10) and a groove in a groove shape. = abutting portion 212b, the first abutting portion 212a and the second abutting portion (four) are arcuate grooves respectively fitted to the first ball group 240 and the second ball group 25A. The hub body 22 is disposed on the mandrel 210. The hub body 22G has a third abutting portion 222 and a fourth abutting portion 224 in a groove shape. The ratchet 23〇 is sleeved on the mandrel 21〇, and within the ratchet 23〇, Deng has a king-shaped groove-the fifth abutting portion 232 and a sixth abutting portion, and the ratchet is provided with a sprocket 238. The chain 238 can be sleeved with a chain (as shown in Figure i, strip) 8). Of course, those skilled in the art can also provide a plurality of straight-only key wheels on the ratchet 23 to provide a shifting function. The first ball group 24 is mainly composed of a plurality of first balls 242, and the first ball group 24 is folded and placed between the first abutting portion 212a and the fourth abutting portion 224, and the first abutting portion is applied. = The first positive tilt angle between the positive force & of the first ball 242 and the mandrel 21 is... This first tilt angle is preferably between 60. And still. between. In addition, the second ball group, the M315660 250 is mainly composed of a plurality of second balls 252, and the second ball 205 has a second force between the positive force n2 and the mandrel 21 =. 60. With 65. between. In addition, the second cone 260 is disposed on the outside of the mandrel 21〇, and has a groove-shaped seventh abutting portion 262, = the first cone is on the top The outer portion of the first cone 270 has an eighth abutting portion 7 in the shape of a groove. The eighth abutting portion 272 is a circular arc groove that fits the fourth ball group. The third rolling milk is mainly composed of a plurality of second balls 282. The third ball group is disposed between the first portion 234 and the seventh abutting portion 262, and the seventh abutting portion 262 is applied to the third ball. The third angle of inclination between the force N3 and the mandrel 21 〜 is preferably - 60. With 65. between. The fourth ball group-mainly composed of a plurality of fourth components constitutes a fourth ball group 29A, which is disposed between the three abutting portions and the eighth abutting portion 272, and is applied to the fourth ball 292. The positive force n4 and the mandrel 210 have a fourth inclination angle ^, and the fourth inclination angle 〜 is preferably between (8). With 65. between. Since the positive force Ni to N4 applied to the first ball 242 to the fourth ball 292 is in an inclined relationship with the mandrel 210, the hub 200 is compared with the conventional drum 1 (refer to the figure). 2) It can withstand axial pressure. Therefore, the wheel has a longer service life than the conventional wheel drum 1〇〇. Further, in the prior art, both the hub body 12 and the ratchet (four) are rollingly connected to the mandrel no by the bearing 14 and the bearing 14 is mainly composed of the outer layer body 142, the inner layer body 146 and the evening ball 144. However, in the present embodiment, the hub body 220 and the ratchet wheel 23 are connected to the mandrel 210 by the first ball set 240 to the fourth ball set 290. 2 and 3, the hub 200 of the present embodiment has less outer layer body 142 and inner layer body 146 than the conventional wheel valley 1 〇〇 M315660, and thus has a lower manufacturing cost. Further, since the hub 200 has less arrangement of the outer layer body 142 and the inner layer body 146, the size of the balls can be larger than that of the hub 100, and the number of balls can be increased. For example, in the second ball set 250, the number of the second balls 252 is 13 and the diameter of the two balls 252 is 4.6 mm, and in the conventional hub 1 , the balls of the bearing 140 at the opposite positions are The number is 10 and the diameter of the ball 144 is 4 〇mm. Since the number of balls in the hub 200 is large and the size of the balls is large, the strength of the hub 2 can be increased. Further, in addition, the rib 212 is integrally formed on the mandrel 21〇, and the concentricity between the hub body 22〇 and the ||: wheel 23〇 can be enhanced. Because if the rib is fixed on the mandrel 21〇 by means of a lock, there must be a clearance between the rib 212 and the mandrel 21〇, and between the hub body 22 and the ratchet 23〇. The concentricity is not good. However, in the present embodiment, the rib 212 is integrally formed on the mandrel 210, and there is no dearanee between the rib 212 and the mandrel 210, so that the hub body 22 can be reinforced. The concentricity between the cymbal and the ratchet 23〇, and the increase in concentricity can reduce the yaw of the hub 2〇〇 and improve the smoothness. Moreover, it is preferable that the first ball 242, the second ball 252, the third ball 272, and the fourth ball 282 are balls made by 10 grinding, thereby improving the smoothness of the hub 2〇〇. . In the second and second (8), the hub body 220 is the largest part. In order to reduce the weight of the wheel 200 as a whole, it is generally used as the material of the hub body 220. However, since the material of the first ball 242 is steel, if the first ball 242 is brought into contact with the hub body 21, when the first ball 242 is rolling, the wheel is likely to be worn by the body 12, I: 幵7 Therefore, the car father has a first bead bowl in the hub 2, and the outer and inner portions of the first bead bowl 310 are respectively abutted with the fourth abutting portion and the first ball group. ^ As a result, when the first ball 242 is rolling, the hub body 120 is less susceptible to wear and deformation. In addition, in the hub 2, it is preferable to provide a second bead bowl 320, 11 • M315660. The second bead bowl 320 is externally and internally opposed to the third abutting portion (10) and the fourth ball group 290, respectively. Pick up. Since the function of the second bead bowl 320 is similar to that of the first bead bowl 31, it will not be described in detail here. Further, the ratchet wheel 230_L is further provided with a pawl 236 which is attached to the ratchet 23G at an equal interval, for example, in an circumscribed manner. In addition, an internal ring gear 226 is disposed inside the hub body 22A. The inner ring gear 226 is fixed to the wheel body 22 by the external thread (10) and the inside of the wheel body 220. internal. 4, it can be seen that when the ratchet 23〇 rotates in the clockwise direction, the pawl a6 will engage with the internal teeth of the inner ring gear 226 to rotate the inner ring gear 226, and when the inner ring gear 226 rotates, The hub body 22〇 is rotated in conjunction with it. When the ratchet 23 is rotated about the other direction (i.e., counterclockwise), the pawl 236 will smoothly pass over the internal teeth ' of the inner ring 226 to idle the ratchet 230. In addition, the other 'Yuanyi 200' also includes dustproof j裒33〇 and dust ring 33〇, wherein the dustproof ring is set between the hub body 220 and the ratchet 23G, and the hub body 22 is twisted and twisted. The 'anti-ring ring 33g' is installed in the gap between the body 220 and the second portion for the close-fitting body 22 〇 and the second cone 27 ,, and the dust-collecting 330 and the dust-proof j-cloth 330' are It is used to prevent external dust from entering the hub 2's p/: because of the positive force applied to the ball and the mandrel system in the recording of the present invention, it is more able to withstand the axial pressure, thereby increasing the use of the hub. Ϊ́ί Creation wheel (4) 'Because no bearing is used, it can have a lower one ☆ ☆ Do not use bearing' The size of the ball can be larger, the number of balls is larger; the strength of the 吏 wheel is higher than the overall strength. In addition, the ribs are formed in a body-like shape. ^^I: The concentricity between the wheel body and the ratchet wheel can be enhanced, and the wheel hub can be erected. In addition, the first abutting portion and the second abutting portion. The younger brother's abutting joint is the circular groove of the ball group, the second ball group, the 12th, the M315660 third ball group and the fourth ball group, so the ball and the abutment portion can be increased. The contact area increases the service life of the balls. , 'North Laran!! 仏 仏 关 关 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上'This _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Figure 2 turns the edge - finer than the rim of the BMX freestyle bicycle. 3 is a cross-sectional view of a hub of the present embodiment. Figure 4 shows the exploded view of the parts of the trough. [Main component symbol description] 1〇: Bicycle 11: Frame 12: Front suspension hanger 13: Rear suspension hanger: Rear wheel 14': Front wheel 15: Transmission system 13, M315660 16: Pedal 17: Sprocket 18: Chain 19: pedal 19': pedal 100: hub 110: mandrel 120: hub body, 130: ratchet 140: bearing 142: outer layer body 144: ball 146: inner layer body 200: hub 210: mandrel 212: rib 212a: First abutting portion 212b: second abutting portion 220: hub body 222: third abutting portion M315660 224: fourth abutting portion 226: inner ring gear 220a, 226a: thread 230: ratchet 232: fifth abutment Portion 234: sixth abutting portion 236: pawl 238: sprocket 240: first ball group 242: first ball 250: second ball group 252: second ball 260: first cone 262: seventh abutment Part 270: second cone 272: eighth abutting portion 280 · third ball group 282: third ball 290: fourth ball group 292: fourth ball M315660 310: first bead bowl 320 · second Bead bowl 330, 330, ·· dust ring Νι~N4 ··positive force 0r^4: first tilt angle ~ fourth tilt angle
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