13748351374835
< I * 六、發明說明： 【發明所屬之技術領域】 . 本發明係有關自行車用齒盤。 【先前技術】 最近，常看到右曲柄爲無孔設計之齒盤。由於可整合 成從自行車右側面觀之，看不到螺栓或孔的整齊設計，因 此，爲多數自行車所採用。 此種齒盤藉由固定軸心於右曲柄，沿相對於軸心軸線 ® 垂直之方向將螺栓螺入左曲柄，或沿軸心之軸線方向，於 左曲柄設置螺检插入部，將螺栓螺入軸心，予以固定。 此種習知品很難進行軸心及軸承之鬆動調整，亦難進 行鬆動發生時的再調整。 【發明內容】 [發明欲解決之問題] 於無孔設計之右曲柄情況下，雖然一般有所謂以軸心 0 壓入右曲柄等方法而固定，以螺栓將左曲柄固定於軸心之 方法，不過’在將軸心固定於右曲柄情況下，整體大小變 大’包裝變得煩璃，又’裝入一箱之數量會大幅減少。 所指包裝煩瑣、裝入一箱之數量大幅減少係成爲包裝 材料費用、輸送費用等大之成本增加的主因，難以在中等 以下價格範圍拓展。 又’左曲柄雖有於曲柄設置開縫，藉由如第5圖所示 ’以螺检’沿相對於軸心之垂直方向螺入而固定者，卻因 . 爲難以進行軸心方向之鬆動調整，所以組裝需要時間，因 1374835 . · 费 爲須增加壁厚補強開縫造成的強度不足，所以重量亦增加 。又，雖有於左曲柄沿軸心之軸線方向設置螺栓插入部， 藉由將螺栓螺入軸心而固定者，卻仍然難以進行軸心方向 之鬆動調整》 再者，由於齒輪裝在右曲柄，加上軸心係固定左右曲 柄，因此，處理不佳，亦影響組裝速度。 本發明係一舉解決上述問題者，其提供一種自行車用 齒盤，於右曲柄採用無孔設計之自行車用齒盤中，包裝簡 # 單，裝入一箱的數量亦多，又，組裝作業簡單，可確實鬆 ' 動調整。 '[用以解決問題之手段] 爲達成上述目的，本發明藉由將軸心壓入左曲柄等固 定，右曲柄爲無孔設計，於右曲柄內部設置螺紋部及止轉 構造，藉由插入軸心中空部之固定螺栓，固定右曲柄。 本發明係一舉解決上述問題者，其提供一種自行車用 齒盤，於右曲柄採用無孔設計之自行車用齒盤中，包裝簡 ® 單，裝入一箱的數量亦多，又，組裝作業簡單，可確實鬆 動調整。 [發明之實施形態] 更具體而言，將一端之外周部具備凸緣及栓槽等止轉 ' 構造以及另一端之外’周部具備螺紋及栓槽等止轉構造之軸 心藉由壓入等而固定至左曲柄，將固定於左曲柄之軸心插 入裝有軸承及套简之中軸組件，並將軸心鎖緊螺帽螺入多 端螺紋部，予以調整。 -4 - 1374835 j < . 於軸心前端部設置栓槽等止轉構造，藉由將此前端部 插入內部具備螺紋部及止轉構造之右曲柄，並將設於齒盤 內部之中空部之固定螺栓螺入右曲柄，而固定右曲柄。 • 【實施方式】 [實施例] 以下根據圖式，說明本發明之實施例。第1圖係本發 明第1實施例，第2圖係右曲柄內部之詳細圖，第3圖係 本發明第2實施例，第4圖係本發明第3實施例，第5圖 •係習知品。 ' 如第1圖所示，本發明於無孔設計之右曲柄1內部設 置相對於軸心軸線平行之栓槽1 b，其用來相對於螺紋部1 a 及軸心8止轉且定位。 於左曲柄2設置栓槽2a，其用來相對於軸心8止轉且 定位，將軸心8之栓槽8 a壓入此栓槽2 a，使左曲柄與軸心 成爲一體。 於右曲柄1中，大徑齒輪3、中徑齒輪4、小徑齒輪5 ® 分別以螺栓6、7.固定，藉由換掛鏈條於任一齒輪上，可選 擇變速比。 裝有軸承15及外套筒16之右杯13螺入中軸組件殼 12之右側，直到凸緣部13a抵接中軸組件殼之端面爲止。 於左·側，在內套筒10插入裝有前述右杯13之外套筒 16內側後，將裝有軸承1 5之左杯1 4螺入，直到外套筒1 6 與軸承15之外輪，或內套筒10與軸承15之內輪抵接爲止 1374835 因爲環18保持成外套筒16與內套筒10大受 以具有容易插入軸心8的目的。 . 藉由壓入左曲柄2等而將裝入之軸心8透過f • 入如前述裝入之底架，將軸心鎖緊螺帽11螺入前 紋8C，藉此，將左曲柄組裝於中軸組件。 藉由軸心8前端部之用以止轉及定位的栓槽 曲柄1之栓槽lb，插入軸心8之中空部的固定螺 右曲柄1之螺紋部la，又藉由右曲柄之底面1C ® 鎖緊螺帽11之端面11a，而將固定右曲柄及軸心 本發明如上述構成，儘管於右曲柄採用無孔 可藉由採取利用固定螺栓之本發明特有之固定方 心固定於左曲柄，結果可大幅削減包裝費用、輸 且組裝亦容易。 又，由於藉軸心鎖緊螺帽將固定於左曲柄之 ，因此，鬆動調整非常簡單，一旦調整，因爲軸 帽之端面1 1 a即抵接右曲柄之端面1 c，所以軸心 不會鬆動，一旦調整，即幾乎無再調整的必要性 心鎖緊螺帽在本發明之構造上不會朝旋緊方向旋 又由於第5圖所示習知組裝固定方法，亦即 於右曲柄，以軸心軸線垂直方向之螺栓固定左曲 或於軸心前端部之內側設置螺紋部，藉螺栓固定 方法均無法完全消除軸心及中軸組件之鬆動，因 格管理軸承內輪與軸心外形之嵌合尺寸。本發明 設定之左右軸承15之內側間尺寸L’該尺寸由壓 〔同心，所 幕件1 7插 端部之螺 8b插入右 栓9螺入 抵接軸心 〇 設計，卻 法，將軸 送費用， 軸心固定 心鎖緊螺 鎖緊螺帽 。且，軸 轉。 軸心固定 柄之方法 左曲柄之 此，須嚴 雖爲預先 入右杯1 5 1374835 而固定之外套筒]6之長度決定，不過，藉由設成大致與此 內側間尺寸同尺寸之內套筒10抵接兩側之軸承15之內輪 ，又藉由將軸心鎖緊螺帽11螺入插入中軸組件之軸心8, 可無鬆動地組裝。 亦即，由於即使沒那麼嚴格管理軸承內輪與軸心外形 之嵌合尺寸，另外，即使多少有鬆動，仍藉由以軸心鎖緊 螺帽軸向強力螺入，予以固定，因此，可無鬆動地固定。 第3圖顯示另一實施例，本實施例爲了提高右曲柄1 ® 及軸心8之固定力，將軸心8之前端部栓槽8b及右曲柄1 ' 之栓槽lb形成推拔狀，且藉由在固定螺栓9之軸心中空部 側，將蓋螺栓19螺入設於軸心8之中空部之螺紋部8d， 予以固定，構成一鬆開固定螺栓9，固定螺栓9之頭部9a 即抵接蓋螺栓之背面19a。 於本實施例中，由於將右曲柄1及軸心前端部之拴槽 形成推拔狀，以固定螺拴9固定右曲柄1之後再度卸下情 況下，只要鬆開固定螺栓’右曲柄及軸承即不會脫落’所 以藉由設置蓋螺栓1 9於固定螺栓9之軸心中空部左曲柄側 ，一鬆固定螺栓，固定螺栓之頭部9a即抵接蓋螺栓之背面 19a，因爲進一步鬆開的話’固定螺栓即不移動而推出右曲 柄，可將右曲柄卸下，所以可提高軸心及右曲柄之固定力 ，並可簡單安裝、卸除。 第4圖係補強右曲柄1之螺紋部之實施例’於右曲柄 1內部設置止轉用栓槽ld及用以螺入固定螺栓21之螺紋 部le，插入具備與此栓槽ld嵌合之栓槽20a之補強構件 1374835 20’爲了固定此補強構件，補強構件鎖緊螺帽21螺入右曲 柄之螺紋部1 e。 雖然在藉由銘锻造製成右曲柄或固定螺栓之螺徑大情 況下沒問題’不過，在藉由鋁鑄造製成右曲柄或固定螺栓 之螺徑小情況下，卻因螺紋部之強度不足，而如本實施例 ’藉由以滿足強度之其他構件形成螺紋部，亦可利用本發 明於低廉的齒盤。 且’本實施例雖然顯示具備三個齒輪之齒盤，不過， 本發明亦可適用於具備二個或一個齒輪之齒盤。又，本實 施例雖然於右曲柄形成陰螺紋，以固定螺栓固定，不過， 可相反地’於右曲柄形成螺栓，以螺帽固定。 [發明效果] 在習知方法採用無孔設g十之右曲柄情況下，由於並未 以將軸心壓入右曲柄等方法固定，因此，全體大小變大， 包裝非常煩瑣，又，裝入一箱之數量大幅減少，結果，包 裝費用、輸送費用較習知品大幅增加。又由於以右曲柄與 左曲柄夾住設於中軸組件的軸承，一邊以手的感覺調整此 夾入強度一邊固定，因此，軸心方向之鬆動調整非常困難 〇 本發明係一舉解決現況問題之技術，藉由在採用無孔 設計之右曲柄內部設置螺紋部及相對於軸承之止轉構造， 可將軸心固定於左曲柄，並藉由插入軸心中空部之固定螺 栓固定右曲柄，因此，可如習知’予以包裝，相較於固定 軸心於右曲柄之方法，固定軸心之左曲柄亦整合得格外地 1374835 ..* 小’因此，裝入一箱內的數量損失亦小，結果可大幅削減 包裝費用、輸送費用。 又，限制左右軸承之外輪，同時將與受限制之軸承外 內側間尺寸等長之內套筒設置成抵接左右軸承之內輪 此只要將鎖緊環螺入固定於左曲柄之軸心，即可簡單 胃^及固定，又，右曲柄之安裝亦只要將右曲柄插入軸心 ’螺入固定螺栓，即可簡單固定，卸除亦只要鬆開固定螺 检’即可簡單卸除。 【圖式簡單說明】 第1圖係第一實施例表示中軸組件及齒盤之局部剖面 前視圖。 第2圖係右曲柄之右側視圖。 第3圖係第二實施例表示中軸組件及齒盤。 第4圖係第三實施例表示中軸組件及齒盤。 第5圖係顯示以習知方法組裝固定之自行車用齒盤。 【主要元件符號說明】 1 右曲柄 2 左曲柄 3 大徑齒輪 4 中徑齒輪 5 小徑齒輪 8 軸心 9 固定螺栓 10 內套筒 1374835 11 12 13 14 15 16 軸心鎖緊螺帽 中軸組件殼 右杯 左杯 軸承 外套筒 17 隔件<I * VI. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a toothed disc for bicycles. [Prior Art] Recently, it has been frequently seen that the right crank is a toothed disc having a non-porous design. Since it can be integrated into the right side of the bicycle, there is no neat design of bolts or holes, so it is used in most bicycles. The sprocket is screwed into the left crank in a direction perpendicular to the axis of the axis, or in the direction of the axis of the shaft, and the threaded insertion portion is provided in the left crank by fixing the shaft to the right crank. Into the axis, fix it. Such a conventional product is difficult to adjust the looseness of the shaft and the bearing, and it is also difficult to perform the re-adjustment when the loosening occurs. [Problem to be Solved by the Invention] In the case of a right crank without a hole design, although there is generally a method in which a shaft is pressed into a right crank or the like, and a left crank is fixed to the shaft by a bolt, However, 'in the case of fixing the shaft to the right crank, the overall size becomes larger. 'The package becomes cumbersome, and the number of 'boxes' is greatly reduced. The cumbersome packaging and the large reduction in the number of boxes to be loaded are the main reasons for the increase in the cost of packaging materials and transportation costs, and it is difficult to expand in the price range below the medium. In addition, although the left crank has a slit in the crank, it is fixed by screwing in the vertical direction with respect to the axis as shown in Fig. 5, but it is difficult to loosen the axial direction. Adjustment, so assembly takes time, due to 1374835. · The cost is increased by the increase in wall thickness and reinforcement, so the weight is also increased. Further, although the bolt insertion portion is provided in the axial direction of the left crank in the axial direction, and the bolt is screwed into the shaft center to fix it, it is still difficult to adjust the looseness in the axial direction. Further, since the gear is mounted on the right crank In addition, the shaft center fixes the left and right cranks, so the handling is not good and the assembly speed is also affected. The invention solves the above problems in one place, and provides a bicycle toothed disc. In the bicycle toothed disc with a non-porous design on the right crank, the package is simple, the number of loading into one box is large, and the assembly operation is simple. Can be loosely adjusted. '[Means for Solving the Problem] In order to achieve the above object, the present invention is fixed by pressing the shaft into a left crank or the like, and the right crank is a non-porous design, and a threaded portion and a rotation preventing structure are provided inside the right crank by inserting The fixing bolt of the hollow portion of the shaft center fixes the right crank. The invention solves the above problems in one place, and provides a bicycle toothed disc. In the bicycle toothed disc with a non-porous design on the right crank, the package is simple, the number of boxes is large, and the assembly operation is simple. Can be loosely adjusted. [Embodiment of the Invention] More specifically, the outer peripheral portion of one end is provided with a flange and a pin groove or the like, and the other end is provided with a shaft having a rotation preventing structure such as a screw thread and a bolt groove. The shaft is fixed to the left crank, and the shaft center fixed to the left crank is inserted into the shaft assembly with the bearing and the sleeve, and the shaft lock nut is screwed into the multi-end thread portion to be adjusted. -4 - 1374835 j < . A rotation preventing structure such as a pin groove is provided at the tip end portion of the shaft, and the front end portion is inserted into a right crank having a screw portion and a rotation preventing structure, and a hollow portion provided inside the toothed disc The fixing bolt is screwed into the right crank and the right crank is fixed. [Embodiment] [Embodiment] Hereinafter, an embodiment of the present invention will be described based on the drawings. Fig. 1 is a first embodiment of the present invention, Fig. 2 is a detailed view of the inside of a right crank, Fig. 3 is a second embodiment of the present invention, and Fig. 4 is a third embodiment of the present invention, and Fig. 5 is a conventional product. . As shown in Fig. 1, the present invention is provided with a bolt groove 1b which is parallel to the axis of the shaft in the right crank 1 of the non-porous design, and is used for stopping and positioning with respect to the thread portion 1a and the shaft center 8. The left crank 2 is provided with a bolt groove 2a for stopping and positioning with respect to the shaft center 8, and pressing the bolt groove 8a of the shaft center 8 into the bolt groove 2a, so that the left crank is integrated with the shaft center. In the right crank 1, the large-diameter gear 3, the middle-diameter gear 4, and the small-diameter gear 5 ® are fixed by bolts 6, 7. respectively, and the gear ratio can be selected by changing the chain to any of the gears. The right cup 13 provided with the bearing 15 and the outer sleeve 16 is screwed into the right side of the center shaft assembly case 12 until the flange portion 13a abuts against the end face of the center shaft assembly case. On the left side, after the inner sleeve 10 is inserted into the sleeve 16 outside the right cup 13, the left cup 14 bearing the bearing 15 is screwed in until the outer sleeve 16 and the outer ring of the bearing 15 Or the inner sleeve 10 abuts against the inner wheel of the bearing 15 1374835 because the ring 18 is held so that the outer sleeve 16 and the inner sleeve 10 are greatly exposed for the purpose of easy insertion into the shaft center 8. By inserting the left crank 2 or the like and inserting the loaded shaft 8 into the chassis as described above, the shaft lock nut 11 is screwed into the front strip 8C, thereby assembling the left crank For the central axis assembly. The threaded portion 1a of the fixed screw crank 1 of the hollow portion of the shaft 8 is inserted by the bolt groove 1b of the bolt crank 1 for stopping and positioning at the front end of the shaft 8 and by the bottom surface 1C of the right crank ® locks the end face 11a of the nut 11 and fixes the right crank and the shaft center. The present invention is constructed as described above, although the use of a non-porous hole in the right crank can be fixed to the left crank by adopting a fixed square center of the present invention using a fixing bolt. As a result, packaging costs can be drastically reduced, and it is easy to lose and assemble. Moreover, since the shaft lock nut is fixed to the left crank, the loose adjustment is very simple. Once the adjustment, since the end face 1 1 a of the shaft cap abuts the end face 1 c of the right crank, the shaft center does not Loose, once adjusted, that is, the necessity of almost no re-adjustment, the nut lock nut does not rotate in the direction of the screw in the construction of the present invention, and the conventional assembly method, that is, the right crank, is shown in FIG. Fixing the left curve with the bolt in the vertical direction of the axis of the axis, or providing the threaded portion on the inner side of the front end of the shaft, the bolting method cannot completely eliminate the looseness of the shaft center and the middle shaft assembly, and the inner wheel and the shaft shape of the bearing are managed. Fit size. The inner side dimension L' of the left and right bearings 15 set by the invention is pressed by the concentricity, and the screw 8b of the end portion of the curtain member is inserted into the right pin 9 to be screwed into the abutment shaft, but the shaft is sent. Cost, shaft-centered locking nut lock nut. And, the axis rotates. The method of fixing the shank to the left crank is determined by the length of the sleeve 6 which is fixed to the right cup 1 5 1374835, but is set to be approximately the same size as the inner side. The sleeve 10 abuts against the inner wheel of the bearing 15 on both sides, and can be assembled without looseness by screwing the shaft lock nut 11 into the shaft center 8 of the middle shaft assembly. That is, even if the fitting size of the inner ring of the bearing and the axial shape is not strictly managed, and even if it is loose, it is fixed by the axially locking nut in the axial direction, so that it can be fixed. Not fixed loosely. FIG. 3 shows another embodiment. In the present embodiment, in order to increase the fixing force of the right crank 1 ® and the shaft center 8, the bolt groove lb of the front end portion 8b of the shaft center 8 and the right crank 1' is pushed and pulled. And the cap bolt 19 is screwed into the threaded portion 8d provided in the hollow portion of the shaft center 8 on the hollow side of the shaft of the fixing bolt 9, and is fixed to form a loose fixing bolt 9, and the head of the fixing bolt 9 is fixed. 9a abuts the back side 19a of the cover bolt. In the present embodiment, since the right crank 1 and the groove at the front end portion of the shaft are formed in a push-out shape, and the right crank 1 is fixed by the fixing screw 9 and then removed again, the fixing bolt 'right crank and bearing are loosened. That is, it will not fall off. Therefore, by providing the cover bolts 19 on the left crank side of the hollow portion of the fixing bolt 9, a loose fixing bolt, the head 9a of the fixing bolt abuts against the back surface 19a of the cover bolt, because it is further loosened. If the fixing bolt does not move and the right crank is pushed out, the right crank can be removed, so that the fixing force of the shaft center and the right crank can be improved, and the mounting and removal can be easily performed. The fourth embodiment is an embodiment in which the threaded portion of the right crank 1 is reinforced. In the right crank 1, a rotation preventing bolt groove ld and a screw portion le for screwing the fixing bolt 21 are provided, and the insertion portion is fitted with the bolt groove ld. The reinforcing member 1374835 20' of the bolt groove 20a is for fixing the reinforcing member, and the reinforcing member lock nut 21 is screwed into the thread portion 1 e of the right crank. Although there is no problem in the case where the diameter of the right crank or the fixing bolt is made by forging, the screw diameter of the right crank or the fixing bolt is small, but the strength of the thread portion is insufficient. Further, as in the present embodiment, the threaded portion is formed by other members satisfying the strength, and the present invention can also be utilized for an inexpensive toothed disc. Further, although the present embodiment shows a toothed disc having three gears, the present invention is also applicable to a toothed disc having two or one gear. Further, although the present embodiment forms a female thread on the right crank and is fixed by a fixing bolt, the bolt can be formed on the right crank instead of the nut. [Effect of the Invention] In the case where the conventional method adopts a right crank without a hole, it is not fixed by pressing the shaft into the right crank. Therefore, the overall size becomes large, the packaging is very cumbersome, and the loading is performed. The number of boxes has been greatly reduced, and as a result, packaging costs and transportation costs have increased significantly compared with conventional products. Further, since the bearing provided in the center shaft assembly is clamped by the right crank and the left crank, the clamping strength is fixed while being fixed by the hand feeling, and therefore, the loosening of the axial direction is very difficult. The present invention is a technique for solving the problem at present. By providing a threaded portion and a rotation preventing structure with respect to the bearing in the right crank of the non-porous design, the shaft center can be fixed to the left crank, and the right crank can be fixed by the fixing bolt inserted into the hollow portion of the shaft core. It can be packaged as in the conventional case. Compared with the method of fixing the axis to the right crank, the left crank of the fixed axis is also integrated specifically to the thickness of 1374835 ..* small. Therefore, the amount of loss in a case is also small. As a result, packaging costs and transportation costs can be drastically reduced. Moreover, the outer ring of the left and right bearings is restricted, and the inner sleeve of the same length as the outer side of the restricted bearing is disposed to abut the inner wheel of the left and right bearings. Therefore, the locking ring is screwed into the axis of the left crank. The stomach can be easily fixed and fixed. Moreover, the installation of the right crank can be simply fixed by inserting the right crank into the shaft and screwing into the fixing bolt, and simply removing the fixing screw can be removed. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial cross-sectional front view showing a center shaft assembly and a toothed disc in the first embodiment. Figure 2 is a right side view of the right crank. Figure 3 is a second embodiment showing the center shaft assembly and the chainring. Figure 4 is a third embodiment showing the center shaft assembly and the chainring. Fig. 5 shows a toothed disc for bicycle assembled and fixed by a conventional method. [Main component symbol description] 1 Right crank 2 Left crank 3 Large diameter gear 4 Middle diameter gear 5 Small diameter gear 8 Axle 9 Fixing bolt 10 Inner sleeve 1374835 11 12 13 14 15 16 Axle lock nut Center shaft assembly shell Right cup left cup bearing outer sleeve 17 spacer
2 0 2 1 環 蓋螺栓 補強構件 補強構件鎖緊螺帽2 0 2 1 Ring Cover Bolt Reinforcement Member Reinforcement Member Lock Nut
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