M381587 五、新型說明: 【新塑所屬之技術領域】 本創作係與一種自行車後變速器有關,更詳而言之, 特別是指一種自行車後變速器鏈輪組件。 【先前技術】 現有許多專利技術文獻已廣泛揭示了自行車後變速 器構造與操作原理,該發明技術領域者可以輕易透過這些 技術文獻清楚地瞭解;其中,本國發明專利證書號1250108 即揭示了一種腳踏車變速器,並揭示了在一般後變速器中 扮演重要角色的鏈條導件’該鏈條導件基本上包括位於 内、外側的兩個導向板,以及可沿著軸線轉動地樞接於上 述兩導向板間的一導向鏈輪及一拉緊鏈輪,使鏈條可以s 方式纏繞嚙合於該鏈條導件的導向鏈輪與拉緊鏈輪上,並 可藉由拉緊鏈輪提供及保持鏈條所需的張力,同時透過導 向鏈輪將鏈條導引偏擺至適當大小的齒盤上,以達到變速 的功能。M381587 V. New description: [Technology field of Xinsu] This creation is related to a bicycle rear derailleur. More specifically, it refers to a bicycle rear derailleur sprocket assembly. [Prior Art] A number of patent documents have widely disclosed the construction and operation principle of a bicycle rear derailleur, which can be easily understood by those skilled in the art. Among them, the national invention patent number 1250108 discloses a bicycle transmission. And revealing a chain guide that plays an important role in a general rear derailleur. The chain guide basically includes two guide plates at the inner and outer sides, and is pivotally pivotally coupled between the two guide plates along an axis. A guiding sprocket and a tensioning sprocket enable the chain to be slidably engaged with the guiding sprocket and the tensioning sprocket of the chain guide, and can provide and maintain the tension required by the chain by tensioning the sprocket At the same time, the chain guide is yawed to the appropriately sized toothed disc through the guide sprocket to achieve the function of shifting.
q刀-冽愀火祗在相對的套管 管長度略大於拉 笞上略為左右橫向偏擺浮動, 官端部與導向板間,由於該套q knife - bonfire in the opposite casing tube length is slightly larger than the pull 略 slightly left and right lateral yaw floating, between the official end and the guide plate, due to the set
擺浮動’同樣地結構’也適用於導向 3 透過這樣的偏擺浮動設計,可以在變速過程中提 7向位置的微_償作用,使鏈條能触 =換到任何檔位的齒盤上,而不會受到齒盤相對於導= =及減鏈輪’彼關在橫向位置上產生龍誤差的影 ^轉動潤專利案的拉緊鏈輪與套管間㈣具有良好 /私移〜月六果在市場可以見到的實際產品製作上,更 通口内緊配有一管狀自潤軸承’再將上述實 ===套辦她嶋㈣達到提高 上述專利案的防塵蓋除了防塵作用 摩擦,但其與防塵;輪= 一般騎乘者所能感受到的噪音。 破 W盥2使上述拉緊難可財右橫向偏财動,1防靡 ==:會存在可變動的游移間隙’因此,該:ΐ 移間隙進入相對栖轉構件中=成^輕易地通^述游 緊鏈輪轉動雜巾發力’並A易在抵 内的泥沙異物,也同時二二a而;f被阻塞在防塵畢 沖洗去除,通常就得將整個鏈===不易經* 等1拆除清洗,對於騎乘者而言是及_相種=件’如鍵條 迷拉緊鏈輪連同套管與防塵蓋通常以套裝方式錦 售與販賣,由於這些構件彼此間在安裝樞接於導向板前, 2此無法相聽裝岐在—起,而為—堆凌散結構,當安 ^人貝或騎乘者在拆開包裝物的過程中,以及在組裝過程 絲Λ在拆除清洗過針,都料因為操作不慎造成零 件掉洛运失’也是經常發生看見的情形。 另外,本國新型專利公告編號493706也揭示了一種 包例於上料向鏈輪及拉緊鏈輪的軸承保護蓋結構,主 將^在導向鏈輪或拉緊鏈輪的通孔中緊配裝入-軸承,再 Ί €蓋的軸部分別以緊配方式套人飾承的内環轴 的外^ Γ。卩並彻該賴蓋❾外蓋部錢伸涵蓋該轴承 检通二:呆;相防塵的效果;組裝時’同樣藉由-螺 兩導向板Ί盖的轴部内孔’使該等保護蓋可被夹抵於 由卿趣由内部軸承提供自由轉動效果;然而, 暮2 需緊配於軸承内環上,相對地,也使得 =向在鍵會輪餘_輪失去左右橫向偏财㈣功能Ξ 不同用過程中,即發—^ $破順_娜變速,且有明顯的噪音產 鏈^鏈條沒有辦法透過導向鏈輪及拉緊 得鏈條容易在料§㈣抑檔㈣齒鮮確對位,使 誤差產生Lrr、盤、導向鍵輪及拉緊鍵輪間因對位喃合 會持4 k樣噪音即使在檔位變換完成後,仍然 如上響縣的品#,故在噪音的表現上遠不 利案的保講^構設計的專利案產品。除此之外,該專 、、盖目對於轴承外環、導向鏈輪及拉緊鏈輪的侧 M381587 壁’彼此間也必需保留一定大小間隙,以防止彼此間產生 碰觸摩擦’進而造成導向鏈輪與拉緊鏈輸間的轉動阻力, 但這樣的間隙,如上所述,同樣容易在泥沙等異物雜質進 入後產生嚴重的阻塞摩擦’而必需經常透過拆卸手段方可 進行清洗,否則將大大地降低其使用品質,以及快迷地縮 短產品的使用壽命。 【新型内容】 本創作係提供一種自行車後變速器鍵輪組件,包括 一鏈輪,其外周壁設置有多數個鏈齒’中央貫設有一 通孔;二潤滑件,各包括一結合部分、一突出部分及 一内部軸孔;所述結合部分可分別自上述鏈輪二邊侧以 緊配合方式嵌套組裝於上述通孔内;所述突出部分位於上 述通孔以外,且外側各形成有一具潤滑作用的摩擦面;所 述潤滑件可藉由一貫穿件通過後安裝固定於後變逮器的 二相對導向板間’使該鏈輪與潤滑件可在二相對導向板間 作左右橫向滑移浮動。 上述潤滑件可在上述通過的貫穿件上左右橫向滑移 浮動’也可以利用該貫穿件通過固定一套管,再利用該套 管拖套貫穿上述潤滑件的通孔,使該潤滑件及其上的鍵輪 也可以在該套管上左右橫向滑移浮動。 上述潤滑件外側的摩擦面間形成有一第一軸向寬 度,而套管二端侧間形成有一第二轴向寬度,利用該第二 轴向寬度大於第一軸向寬度的設計,可以使套管被安裴固 定於該等導向板間時’可以確保活動樞套在其上的潤滑件 6 M381587 '本述左右橫向滑移浮動作用。 以在•相2提供的鏈她件’心該鏈輪與潤滑件可 向板_貫穿件4㈣上作左右橫向滑移 =盤m;;確簡輪崎在導⑽條進料同槽位 ==’能夠藉由自動地橫向滑移浮動,來克 &向對位上的誤差值’㈣ 速、平穩且·,而不會產生擾人的噪音。The pendulum floating 'same structure' is also applicable to the guide 3. Through such a yaw floating design, the positional micro-compensation can be lifted during the shifting process, so that the chain can be touched to the gear plate of any gear position. Without the shadow of the sprocket relative to the guide == and the sprocket wheel's in the lateral position, the tension between the sprocket and the casing (four) has good/private movement~6 In the actual product production that can be seen in the market, there is a tubular self-lubricating bearing in the mouth of the port, and then the above-mentioned real === set her (嶋) to improve the dust cover of the above patent case, in addition to the dust-proof friction, but And dustproof; wheel = the noise that the average rider can feel. Breaking W盥2 makes the above tightening difficult and the right lateral side is biased. 1 靡 靡 ==: There will be a variable migration gap. Therefore, the 间隙 shift gap enters the relative habitat member = easy to pass ^Speaking tight sprocket to rotate the rags force 'and A is easy to get inside the muddy foreign body, but also two or two a; f is blocked in the dustproof rinse to remove, usually have to the entire chain === * Waiting for 1 to remove the cleaning, for the rider is _ phase = = 'such as the key bar zipper sprocket together with the casing and dust cover are usually sold and sold in a set, because these components are installed in each other Pivoted in front of the guide plate, 2 can not be seen in the installation, but for the pile of loose structure, when the person or the rider in the process of unpacking the package, as well as in the assembly process The removal of the cleaning needles is due to the fact that the parts are lost due to inadvertent operation. In addition, the domestic new patent publication number 493706 also discloses a bearing protection cover structure for the feeding sprocket and the tension sprocket, and the main assembly is tightly fitted in the through hole of the guiding sprocket or the tension sprocket. - Bearings, and then the shafts of the cover are respectively fitted with the outer ring of the inner ring shaft.卩 彻 赖 赖 赖 ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ❾ ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; It is clamped to the free rotation effect provided by the inner bearing by the singularity; however, 暮2 needs to be tightly fitted to the inner ring of the bearing, and relatively, it also makes the directional shift to the left and right side of the key. In the process of different use, that is, the transmission - ^ $ broken _ _ Na shifting, and there is obvious noise production chain ^ chain has no way to pass the guide sprocket and tighten the chain is easy to § (four) inhibit file (four) teeth freshly aligned, The error produces Lrr, the disc, the guide key wheel and the tension key wheel. Because of the alignment, the 4k-like noise will be maintained. Even after the gear shift is completed, the product of the county is still as above, so the performance of the noise is far. The patent case product of the unfavorable case. In addition, the special, cover for the bearing outer ring, the guide sprocket and the side of the tension sprocket M381587 wall ' must also retain a certain amount of clearance between each other to prevent contact friction between each other' and then lead The rotational resistance between the sprocket and the tension chain, but such a gap, as described above, is also prone to severe blocking friction after the entry of foreign matter such as sediment, and must be cleaned by means of disassembly, otherwise Greatly reduce the quality of its use, and quickly shorten the life of the product. [New content] The present invention provides a bicycle rear derailleur key wheel assembly, comprising a sprocket, the outer peripheral wall of which is provided with a plurality of sprocket's centrally having a through hole; and two lubricating parts each including a joint portion and a protruding portion a portion and an inner shaft hole; the joint portion may be nested and assembled in the through hole from the two sides of the sprocket in a tight fit manner; the protruding portion is located outside the through hole, and each of the outer side is formed with a lubrication The friction surface of the action; the lubricating member can be fixedly connected between the two opposite guide plates of the rear changer by a through-piece, and the sprocket and the lubricating member can be laterally slidable between the two opposite guide plates. float. The lubricating member may be laterally slidably floated on the left and right through-through members. The through-member may be used to fix a sleeve, and the sleeve is used to penetrate the through hole of the lubricating member to make the lubricating member and the lubricating member thereof The upper key wheel can also be laterally slid and floated on the sleeve. A first axial width is formed between the friction surfaces on the outer side of the lubricating member, and a second axial width is formed between the two end sides of the sleeve. The second axial width is greater than the first axial width. When the tube is fixed between the guide plates by the ampoule, it can ensure that the lubricating member 6 M381587 on which the movable pivoting sleeve is disposed to laterally slide and float. With the chain provided by the phase 2, the part of the sprocket and the lubricating part can be laterally slid to the left and right sides of the plate _ penetration 4 (four) = disk m;; = 'Be able to automatically and laterally slip the float, and the error value on the alignment to the '(4) speed, smooth and · without disturbing noise.
位詈it潤件及其上難往左或往謂料動到外侧 適當地透過潤滑件二邊側的摩擦面與相對 :導:板内側壁面相互碰觸’由於該摩擦面可提供良好潤 :效果呵以大幅地降低與導向板間產生的摩擦係數與阻 才i也也可大幅地降低摩擦產生的噪音聲響,因此, 同樣可以避免鏈輪轉動產生擾人噪音。 ★本創作的鏈輪組件,軸未_f知技藝的防塵罩設The surface of the 詈it and the upper part of the lubricant are moved to the outside and the friction surface of the two sides of the lubricating material is properly contacted with the opposite side: the inner wall surface of the plate touches each other's surface. The effect is to greatly reduce the friction coefficient and the resistance generated between the guide plates and the friction noise generated by the friction, so that the sprocket rotation can also be avoided to cause disturbing noise. ★The sprocket assembly of this creation, the shaft is not _f know the skill of the dust cover
計,但採用自潤軸承的潤滑件與習知採用的滚珠或滚針柏 承相比較’具有清洗容易且不易產生清洗死角的優點,所 以清洗作業相當容易,且通常毋需透過拆卸程序,即可達 到良好的清洗效果。 上述鏈輪組件的潤滑件可以緊配合方式嵌套定位於 鏈輪上i該鏈輪組件安裝前,其套管與該等潤滑件間也 了彼此相互限位形成一體式構件,而不會如習知技藝呈凌 散狀,故在包裝拆封後,以及組裝拆卸過程中,均不會產 生彼此为政脫離,導致掉落遺失的情形。 【實施方式】 7 如圖1至4,本創作是-種自行車後變速器鍵輪組件 較佳實施例,該鏈輪組件!可崎由—貫穿件2安裝定位 ;後交速㈣—相對導向板3間’本實施例的貫穿件2為 ;;螺检;所述鏈輪組件1主要包括—鏈輪1 ◦、二潤滑件 〇及-套官3 Q ;以上係針對上述組合構件分述說明。 關於該鏈輪!0,本實施例是由金屬材料所製成,但 乂此為限’也可以疋&纖維材料或卫㈣膠材料,且其 : 卜周壁面設置有多數個鏈齒11,中央貫穿有一通孔i 且二邊側在該等鏈齒11與通孔12端部開口間各形 成有一貼合壁面1 3。 關於該等潤滑件20,各包括一結合部分21、一突 ^部分2 2 ’以及—内部轴孔2 3 ;所述結合部分2 !可 =自上述鏈輪1Q二邊側以緊配合方式嵌套組裝於上 :通孔12内;所述突出部分22位於上述通孔23以 出部且5側各形成有―具崎作㈣雜面2 4 ;所述突 出=2的摩擦面24間相隔有一第一軸向寬度… 潤件2〇為?形套件狀的自潤轴承,且 ^緣有-姆部位,以及—自該姆雜—端徑向延伸的 護緣部位他繼_==:== 分別靠抵定錄上料輪1Q各㈣賴可 關於該套管30,太每# 材料Μ Me &例為金屬材料,特別是銅質 =構成’可與增滑件20的軸孔23 柏使上摘滑件20及其上的鍵輪1〇得以在該套管3 M381587 0上自由轉動;所述套管3 〇具有一内部穿孔3丄,可供 上述貫穿件2穿伸通過後安裝固定於上述導向板3間,且 二端側間相隔有一第二軸向寬度d 2大於上述第一軸向 寬度d 1,使上述潤滑件2 〇及其上鏈輪1 〇可在所述套 管3 0上左右橫向滑移浮動’並可適當地透過上述潤滑件 2 0的摩擦面2 4與上述導向板3的相對壁面3 a相互 碰觸摩擦。 上述潤滑件2 0的結合部分2 1内端側間相隔有一 丰又預定距離,可界定出一限位空間a ;上述套管3 〇外周 壁中間部位設置有一限位凸緣3 2,可被容納限位於上述 限位空間a内,且該限位凸緣3 2二邊側與各相對結合部 分2 1的内端側間所相隔的距離總合,大於上述第二軸向 寬度d2與第一軸向寬度d1兩者的差值。 本實施例的限位凸緣3 2是由套管3 0 —體突伸成 型,也可以由組裝於該套管3 〇外周壁上的一限位構件所 構成,例如C形扣件等。 本創作上述鏈輪組件1同時適用於後變速器的導引 鏈輪組件’以及拉緊鏈輪組件。 如圖5所示,本創作第二實施例的鏈輪組件i a,大 致與上述較佳實施例相同,其差別僅在於:將上述潤滑件 2 0所採用的τ形套件狀自潤軸承,改為圓筒狀的自潤軸 承’並在該鏈輪1 〇的通孔i 2中間部位設置一定位凸緣 14;藉由上述結構改變’可以使該等潤滑件2 〇同樣具 有軸套部位,以形成上述結合部分2 1,但其突出部分2 9 位於該通孔12以外,且由該軸套部位一體韩向 外铜她s壁雜獅成,並可藉由該管壁部位呈圓環狀的 卜·壁形成上述突出部分22的摩擦面24。 需特別說明的是,本實施例採關筒狀自鄉承的潤 =2 Q a,由於其管壁部位無法如較佳實施例用以形成 犬出部分2 2的護緣部位’能夠直接與該鏈輪i ◦二邊側 的貼合壁面丄3相互靠抵,來達到組裝限位作用,因此, 可以改藉由用以形成結合部分2 2的轴套部位内侧端與 上述鏈輪1 0中間通;L1 2上突伸的定位凸緣丄4相對 侧壁相互靠抵,來達到相同效果的限位作用。 如圖6所示,本創作第三實施例的鏈輪組件丄b,大 致與第二實施例的鏈輪組件i a㈣,其差別僅在於:在 第二實施例各潤滑件2〇突出部分22的管壁部位外周 壁上分別形成-定位凸緣2 2 1 ’可用以與上述鍵輪工〇 二邊側的通孔1 2周圍壁面相互靠抵定位,使該等潤滑件 2 2可以被準確且快速地組裝定位於通孔i 2二端内 部,故毋需設置上述第二實施例的定位凸緣i 4。 本創作上述各實施例的潤滑件2 〇及其上鏈輪工 〇,主要是藉由潤滑件2 0的通孔丄2與樞軸穿套其内的 套管3 〇彼此間所形成的樞轉結構,在必要時隨著鏈條橫 向位置的對位,產生左右橫向滑移浮動作用,因此,原則 上只要可以提供上述潤滑件2 〇及其上鏈輪2 〇在其上 產生左右橫向滑移浮動,即符合本創作的技術精神;據 此,可以輕易想見的是,利用上述貫穿件2直接提供上述 鏈輪1 0的通孔1 2穿套軸樞於其上,並使該潤滑件2 ο 及其上鏈輪1 〇能夠在其產生上述撗向浮動,也可以達到 本創作的預期效果。 本創作上述各實施例的潤滑件2 〇及其上鏈輪工〇 可以該等導向板3_貫穿件2或套管3 〇上作左右橫 向滑移浮動,因此,可以確保鏈輪組件1、i a、丄匕在 導^鏈條進行不同檔位㈣盤位置變換時,能夠藉由自動 地板向滑移浮動’來克服彼此間在横向對位上的誤差值, 使槽位變換聰更為快速、平穩且㈣, 的噪音。 ϋ復人 上述滑潤件2Q及其上鏈輪丨Q往左或往右滑移浮 動到外側位置時’可以適當地透過崎件2 q二邊侧的摩 擦面24與相對的導向板3内侧壁面3 Μ目互碰觸,由於 該摩擦面2 4可以提供良好潤滑效果,因此,可以大幅地 降低其與導向板3間產生的摩擦係數與阻力,相對地,也 可大幅地降個雜職生㈣音聲響, 換過程及其前後。 甘〜仰:變 /創作的鏈輪組件i、h、ib,雖然未採用習知 =藝的防塵罩設計,但採用自潤轴承的潤滑件2 〇與一般 吊見的滾珠或料轴承相崎,具有清洗 ^ 清洗死角的優點,故清洗作 產生 拆卸程序即物㈣亀f繼需透過 本創作第二、二每松y m 一只施例採用圓筒狀自潤 20’其摩擦面24的面積雖然小於較佳 M381587 ◦的摩擦面2 4,而不如較佳實施例來的優越,但其摩擦 面24仍可提供遠優於現有結構的良好潤滑效果,而可^ 效防止轉動時產生擾人的嗓音聲響。 本創作上述第一至三實施例的鏈輪組件i、丄a、工 b ’其潤滑件2 〇皆以緊配合方式嵌套定位於鏈輪〇 且套管3 Q與該㈣滑件2 〇彼關也可在—定浮動 圍相互限位形成—體式構件,故相較於習知技藝呈凌散 狀的組裝構造,本創作的鏈輪組件丄、丄a、i b無論在 包裝拆封後,或是在組裝拆卸過程巾,各組成構件均不會 彼此相互分散脫離,所以不會有導致掉落遺失的情形 综上所述,本創作在同類產品中實有其極佳之進步實 用性’同時遍查國内外關於此類結構之技術資料,文獻中 亦未發現有相同的構造存在在先,是以,本創作實已具備 新型專利要件,爰依法提出申請。 惟,以上所述者,僅係本創作之數較佳可行實施例 而已’故舉凡應用本創作·書及申請專利範圍所為之等 效、、構變化,理應包含在本創作之專利範圍内。 【圖式簡單說明】 圖1為本創作較佳實施例的鏈輪組件外觀組合圖。 圖2為本創作較佳實施例的鏈輪組件立體分解圖。 圖3為本創作較佳實施例的鏈輪紕件侧視剖面圖。 圖4為本創作較佳實施㈣鏈輪組件安錢樣的側視剖 面示意圖。 圖5為本創作第二實施綱鏈輪組件侧視剖面圖。 12 M381587 圖6為本創作第三實施例的鏈輪組件側視剖面圖。 【主要元件符號說明】 1 鏈輪組件 2 貫穿件 3 導向板 3 a 壁面 10 鏈輪 11 鏈齒 12 通孔 13 貼合壁面 14 定位凸緣 2 0 潤滑件 2 1 結合部分 2 2 突出部分 2 2 1 定位凸緣 2 3 軸孔 2 4 摩擦面 d 1 第一軸向寬度 d 2 第二轴向寬度 a 限位空間 3 0 套管 3 1 穿孔 3 2 限位凸緣However, the lubrication of the self-lubricating bearing is superior to the conventionally used ball or needle roller. It has the advantages of easy cleaning and less difficulty in cleaning the dead corner, so the cleaning operation is quite easy and usually requires no removal procedure. Good cleaning results can be achieved. The lubricating component of the sprocket assembly can be nested and positioned on the sprocket in a tightly fitting manner. Before the sprocket assembly is installed, the sleeve and the lubricating components are also mutually restrained from each other to form an integral component, but not like The conventional skills are scattered, so that after the packaging is unpacked, and during the assembly and disassembly process, there will be no situation in which the two sides are separated from each other and the drop is lost. [Embodiment] 7 As shown in Figs. 1 to 4, the present invention is a preferred embodiment of a bicycle rear derailleur key wheel assembly, the sprocket assembly! The sprocket is divided into the sprocket 1 ◦, the second sprocket 1 is mainly included in the sprocket 1 Pieces and sleeves 3 Q; the above is a description of the above composite components. About the sprocket! 0, this embodiment is made of a metal material, but this is limited to 'can also be 疋 & fiber material or Wei (4) glue material, and: the peripheral wall surface is provided with a plurality of fastener elements 11, a central through through The hole i and the two sides are respectively formed with a fitting wall surface 13 between the sprocket 11 and the end opening of the through hole 12. Each of the lubricating members 20 includes a joint portion 21, a protrusion portion 2 2 ' and an inner shaft hole 2 3 ; the joint portion 2 can be embedded in a tight fit from the two sides of the sprocket 1Q The sleeve is assembled on the inside of the through hole 12; the protruding portion 22 is located at the upper portion of the through hole 23 and is formed on each of the sides 5 with a "seven" surface 24; the friction surfaces 24 of the protrusion = 2 are separated There is a first axial width... What is the running piece 2? The self-lubricating bearing of the shape of the kit, and the edge of the ^--, and the edge of the margin extending radially from the end of the mat---===== respectively by the offset of the loading wheel 1Q (4) On the sleeve 30, too per #material Μ Me & for example metal material, in particular copper = constituting 'shaft hole 23 with the slider 10, the upper pick slider 20 and the key thereon The wheel 1 is freely rotatable on the sleeve 3 M381587 0; the sleeve 3 has an inner perforation 3丄, which can be inserted and fixed to the guide plate 3 after the penetration member 2 is passed through, and the two ends are The second axial width d 2 between the sides is greater than the first axial width d 1 , so that the lubricating element 2 〇 and the upper sprocket 1 〇 can slide laterally and laterally on the sleeve 30 The friction surface 24 of the lubricating member 20 and the opposing wall surface 3 a of the guide plate 3 can be appropriately rubbed against each other. The inner end sides of the joint portion 2 1 of the lubricating member 20 are separated by a predetermined distance and define a limit space a; the sleeve 3 is provided with a limiting flange 32 in the middle portion of the outer peripheral wall, which can be The receiving limit is located in the above-mentioned limiting space a, and the distance between the two sides of the limiting flange 3 2 and the inner end sides of the opposite connecting portions 21 is greater than the second axial width d2 and the second The difference between an axial width d1. The limiting flange 32 of the present embodiment is formed by the sleeve 30, or may be formed by a limiting member assembled on the outer peripheral wall of the sleeve 3, such as a C-shaped fastener or the like. The above sprocket assembly 1 of the present invention is applicable to both the guide sprocket assembly ' of the rear derailleur and the tension sprocket assembly. As shown in FIG. 5, the sprocket assembly ia of the second embodiment of the present invention is substantially the same as the above-described preferred embodiment, and the only difference is that the τ-shaped kit-like self-lubricating bearing adopted by the lubricating member 20 is changed. a cylindrical self-lubricating bearing 'and a positioning flange 14 at a middle portion of the through hole i 2 of the sprocket 1 ;; by the above structural change ', the lubricating members 2 〇 also have a sleeve portion, To form the above-mentioned joint portion 2 1, but the projecting portion 2 9 is located outside the through hole 12, and the bush portion is integrated with the outer shell of the copper, and the ring portion of the tube wall can be made into a ring The shape of the wall forms the friction surface 24 of the above-mentioned projecting portion 22. It should be particularly noted that the embodiment of the present invention uses a tubular shape from the township of the wetness = 2 Q a, because the wall portion of the tube cannot be used as a preferred embodiment to form the beading portion 2 2 of the edge portion can directly The welcoming wall surface 丄3 of the two sides of the sprocket y is abutted against each other to achieve the assembly limit function. Therefore, the inner end of the sleeve portion for forming the joint portion 22 and the sprocket 10 can be modified. The intermediate passage; the positioning flange 突4 protruding from the L1 2 abut against the side walls to achieve the same effect of the limit. As shown in FIG. 6, the sprocket assembly 丄b of the third embodiment of the present invention is substantially different from the sprocket assembly i a (four) of the second embodiment only in that: in the second embodiment, each of the lubricating members 2 protrudes from the portion 22 The outer peripheral wall of the pipe wall portion is respectively formed with a positioning flange 2 2 1 ' which can be positioned to abut against the surrounding wall surface of the through hole 1 2 on both sides of the key wheel work, so that the lubricating members 2 2 can be accurately And quickly assembled and positioned inside the two ends of the through hole i 2, it is not necessary to provide the positioning flange i 4 of the second embodiment described above. The lubricating member 2 〇 and the upper sprocket work of the above embodiments are mainly formed by the through hole 丄 2 of the lubricating member 20 and the sleeve 3 formed by the pivot sleeve. The rotating structure, if necessary, with the lateral position of the chain, produces a left-right lateral sliding floating effect, so in principle, as long as the above-mentioned lubricating member 2 〇 and its upper sprocket 2 可以 can be produced to generate left and right lateral slip Floating, that is, in accordance with the technical spirit of the present invention; accordingly, it can be easily imagined that the through hole 12 of the sprocket 10 is directly provided by the through-hole 2 to be pivoted thereon, and the lubricating member is 2 ο and its upper sprocket 1 〇 can produce the above-mentioned 撗 浮动 float, and can also achieve the expected effect of this creation. The lubricating member 2 〇 of the above embodiments and the upper sprocket work thereof can be laterally slidably floated on the guide plate 3_through member 2 or the sleeve 3, thereby ensuring the sprocket assembly 1. Ia, 丄匕 When the guide chain is changed in different gear positions (four), the error value of the lateral alignment can be overcome by the automatic floor sliding to the floating position, so that the slot change is faster and faster. Smooth and (four), the noise. ϋ 人 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述3 When the eyes touch each other, since the friction surface 24 can provide a good lubricating effect, the friction coefficient and the resistance generated between the sliding surface and the guide plate 3 can be greatly reduced, and relatively, the number of students can be greatly reduced. (4) The sound of the sound, the process of changing and before and after. Gan ~ Yang: change / creation of the sprocket components i, h, ib, although the use of the conventional = art dust cover design, but the use of self-lubricating bearing lubrication 2 〇 and the general hanging ball or material bearing, It has the advantages of cleaning ^ cleaning dead angle, so the cleaning process produces the disassembly procedure (4) 亀f, and then through the creation of the second and second ym, one embodiment uses a cylindrical self-lubricating 20' area of the friction surface 24 Less than the preferred M381587 摩擦 friction surface 24, which is not as superior as the preferred embodiment, but the friction surface 24 can still provide a good lubrication effect far superior to the existing structure, and can effectively prevent the occurrence of disturbing rotation. The sound of the voice is loud. The sprocket assembly i, 丄a, and b' of the first to third embodiments of the present invention are all nested and positioned in a tight fit manner on the sprocket and the sleeve 3 Q and the (four) slider 2 〇 The sprocket components 丄, 丄a, ib of the creation can be formed in the sprocket assembly 丄, 丄a, ib after the package is unsealed. Or, in the process of assembling and disassembling, the components are not dispersed and separated from each other, so there is no possibility of causing the loss to be lost. In summary, the creation has excellent progress and practicality in similar products. 'At the same time, the technical information on such structures at home and abroad was investigated. The same structure was not found in the literature. Therefore, this creation has already possessed new types of patents and applied for it according to law. However, the above-mentioned ones are only the preferred and feasible embodiments of the present invention, and the equivalents and constructions of the application and the scope of the patent application are included in the scope of the patent. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a combination view of the appearance of a sprocket assembly in accordance with a preferred embodiment of the invention. 2 is an exploded perspective view of the sprocket assembly of the preferred embodiment of the present invention. Figure 3 is a side cross-sectional view of the sprocket member of the preferred embodiment of the present invention. Fig. 4 is a side elevational cross-sectional view showing the preferred embodiment (4) of the sprocket assembly. Figure 5 is a side cross-sectional view of the sprocket assembly of the second embodiment of the present invention. 12 M381587 Figure 6 is a side cross-sectional view of the sprocket assembly of the third embodiment of the present invention. [Main component symbol description] 1 sprocket assembly 2 penetrating member 3 guide plate 3 a wall 10 sprocket 11 sprocket 12 through hole 13 fitting wall 14 positioning flange 2 0 lubricating member 2 1 coupling portion 2 2 protruding portion 2 2 1 Locating flange 2 3 Shaft hole 2 4 Friction surface d 1 First axial width d 2 Second axial width a Limit space 3 0 Sleeve 3 1 Perforation 3 2 Limit flange
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