TWI534038B - Bicycle rear sprocket assembly - Google Patents
Bicycle rear sprocket assembly Download PDFInfo
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- TWI534038B TWI534038B TW101137875A TW101137875A TWI534038B TW I534038 B TWI534038 B TW I534038B TW 101137875 A TW101137875 A TW 101137875A TW 101137875 A TW101137875 A TW 101137875A TW I534038 B TWI534038 B TW I534038B
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Description
本發明涉及一種自行車,尤其是指自行車的後鏈輪組件。 The present invention relates to a bicycle, and more particularly to a rear sprocket assembly for a bicycle.
在現代社會,自行車運動已經越來越普及和流行。無論是業餘騎手還是專業騎手,對於速度的追求也變得更加渴望,因此,自行車傳動機構中的變速數量在不斷增加,裝於自行車後花鼓上的鏈輪組件的鏈輪數量也由以前的六個增加到十個或更多。隨著鏈輪數量的增加,鏈輪的徑向尺寸也隨之增大,整個鏈輪組件的重量也大大加重。對於單個鏈輪,特別是徑向尺寸大的鏈輪的強度要求也隨之提高。為了防止齒數大的鏈輪在使用過程中產生的側向變形後,不僅會影響變速效果,還會造成整個組件的損壞。與此同時,為了減輕組件的整體重量,要求將鏈輪組件重新設計以滿足市場的需求。 In modern society, cycling has become more popular and popular. Whether it is an amateur rider or a professional rider, the pursuit of speed has become more eager. Therefore, the number of shifts in the bicycle transmission mechanism is increasing, and the number of sprockets of the sprocket assembly mounted on the rear drum of the bicycle is also from the previous six. Increase to ten or more. As the number of sprockets increases, the radial dimension of the sprocket also increases, and the weight of the entire sprocket assembly is greatly increased. The strength requirements for a single sprocket, especially a sprocket with a large radial size, are also increased. In order to prevent the lateral deformation of the sprocket with a large number of teeth during use, it not only affects the shifting effect, but also causes damage to the entire assembly. At the same time, in order to reduce the overall weight of the assembly, the sprocket assembly is required to be redesigned to meet the needs of the market.
專利CN101088851A披露了類似的設計,但是這個設計的一個缺點是齒數最大的第一鏈輪和第二鏈輪是通過鉚釘連接在第三鏈輪上,而第一及第二鏈輪上所受到的力也是通過鉚釘傳遞到第三鏈輪上,再由第三鏈輪傳遞到自行車後花鼓的鍵槽上,這樣第三鏈輪所受的扭力就會非常大,特別是用於山地運動時,從而造成第三鏈輪與花鼓連接處的內花鍵容易損傷;另外由於第一鏈輪及第二鏈輪與自行車的後花鼓是不直接接觸的,當將這種鏈輪組件安裝到後花鼓上時,必須使用特定的後花鼓來與之 配合,或增加一個特定尺寸的配件來保證鏈輪組件的正確安裝位置,這勢必會增加自行車的生產成本。 Patent CN101088851A discloses a similar design, but one disadvantage of this design is that the first sprocket and the second sprocket with the largest number of teeth are connected to the third sprocket by rivets, and the first and second sprocket are subjected to The force is also transmitted to the third sprocket by the rivet, and then transmitted by the third sprocket to the keyway of the bicycle rear drum, so that the torque of the third sprocket is very large, especially when used for mountain sports. The internal spline of the third sprocket and the hub is easily damaged; in addition, since the first sprocket and the second sprocket are not in direct contact with the rear hub of the bicycle, when the sprocket assembly is mounted on the rear hub When you must use a specific rear hub to Cooperate, or add a specific size of accessories to ensure the correct installation position of the sprocket assembly, which will inevitably increase the production cost of the bicycle.
美國專利US5194051披露了框架類的鏈輪結構,該結構能很好的解決了大尺寸鏈輪在使用過程中的側向變形,同時由於每個鏈輪是通過多個固定件連接在質量較輕的爪型框架結構上,而框架的中心有一整體的與自行車後花鼓嚙合的嚙合部位。這樣鏈輪的整體組件的重量會減輕很多。但是這類的鏈輪結構對於中間的框架部件的加工要求非常高,同時需要的零件數量和裝配時間也相應增加。因此這類結構的鏈輪組件的成本也是非常高昂。 U.S. Patent No. 5,194,051 discloses a frame-like sprocket structure which can well solve the lateral deformation of a large-sized sprocket during use, and at the same time, because each sprocket is connected by a plurality of fixing members in a lighter quality. The claw-shaped frame structure has an integral portion of the frame that engages with the rear drum of the bicycle. The weight of the overall assembly of the sprocket will be much reduced. However, this type of sprocket structure requires a very high processing requirement for the intermediate frame parts, and the number of parts required and the assembly time are correspondingly increased. Therefore, the cost of the sprocket assembly of this type is also very high.
本發明的目的是在於克服現有技術的不足,提供了一種結構合理、生產成本低、輕量化且扭轉剛性強,並易於生產和裝配的自行車後鏈輪組件。 SUMMARY OF THE INVENTION The object of the present invention is to overcome the deficiencies of the prior art and to provide a bicycle rear sprocket assembly which is structurally sound, low in production cost, light in weight, strong in torsional rigidity, and easy to produce and assemble.
為了解決上述存在的技術問題,本發明採用下述技術方案:一種自行車後鏈輪組件,其包括有至少三個由大往小平行排列的鏈輪,其中最大、小鏈輪為輪輻式鏈輪,在該最大、小鏈輪的中心處設有能套接在自行車後花鼓外的花鍵;而中間鏈輪為空心環式鏈輪,即中間鏈輪的中心處不與自行車的後花鼓直接接觸;相鄰的鏈輪之間通過呈圓周間隔分佈的若干個緊固件連接,在緊固件上設有將相鄰鏈輪平行分隔開的分隔台。 In order to solve the above-mentioned technical problems, the present invention adopts the following technical solution: a bicycle rear sprocket assembly including at least three sprocket wheels arranged in parallel from large to small, wherein the largest and small sprocket are spoke sprocket At the center of the largest and small sprocket, there is a spline that can be sleeved outside the rear drum of the bicycle; and the middle sprocket is a hollow ring sprocket, that is, the center of the intermediate sprocket is not directly connected with the rear hub of the bicycle Contact; adjacent sprocket wheels are connected by a plurality of fasteners distributed at a circumferential interval, and the fastener is provided with a partition which separates adjacent sprockets in parallel.
在對上述自行車後鏈輪組件的改進方案中,所述的緊固件為螺釘或鉚釘,它一端鉚接或擰在相鄰鏈輪中的其中一個鏈輪上,另一端可 以插入到另一輪鏈的對應插孔中。 In a modification of the bicycle rear sprocket assembly, the fastener is a screw or a rivet, which is riveted or screwed at one end of one of the adjacent sprockets, and the other end is To insert into the corresponding jack of the other wheel chain.
在對上述自行車後鏈輪組件的改進方案中,最大鏈輪上的花鍵端部剛好與最小鏈輪的花鍵端部接觸對接。 In a modification of the bicycle rear sprocket assembly described above, the splined end of the largest sprocket is just in contact with the splined end of the smallest sprocket.
與現有技術相比,本發明的有益效果是:1)、由於它是通過最大、小鏈輪的花鍵來套接在自行車的後花鼓上的,而中間鏈輪不與自行車的後花鼓套接,這樣中間鏈輪可以做成空心環式,於是可以大大減輕中間鏈輪的重量,節省材料,當後鏈輪組件的鏈輪數量越多時,其減輕的重量更為明顯,當本發明應用到變速數量越多的自行車傳動機構上後,自行車的重量仍然大為減輕,並滿足騎車者的速度追求,所以本發明可以實現輕量化,其結構合理、生產成本低;2)、另外,無需特定的後花鼓與之配合,這樣鏈輪組件的生產和裝配簡單、容易;3)、與此同時,由於本發明通過兩側的最大、小鏈輪套接在後花鼓上,這兩個鏈輪同時受力,這樣可以確保鏈輪組件的扭轉剛度,不易出現變形,從而保證自行車的安全性和可靠性。 Compared with the prior art, the beneficial effects of the present invention are: 1), because it is sleeved on the rear hub of the bicycle through the spline of the largest and small sprocket, and the intermediate sprocket does not overlap with the rear hub of the bicycle Therefore, the intermediate sprocket can be made into a hollow ring type, so that the weight of the intermediate sprocket can be greatly reduced, and the material is saved. When the number of sprocket wheels of the rear sprocket assembly is increased, the weight is reduced more obviously. After being applied to the bicycle transmission mechanism with more shifting numbers, the weight of the bicycle is still greatly reduced, and the speed of the rider is satisfied, so the invention can achieve weight reduction, reasonable structure and low production cost; 2) There is no need for a specific rear hub to cooperate with it, so that the production and assembly of the sprocket assembly is simple and easy; 3) at the same time, since the present invention is sleeved on the rear hub by the largest and small sprocket on both sides, The sprocket is simultaneously stressed, which ensures the torsional rigidity of the sprocket assembly and is less prone to deformation, thus ensuring the safety and reliability of the bicycle.
1,2‧‧‧鏈輪 1,2‧‧‧Sprocket
11,21‧‧‧花鍵 11, 21‧‧‧ spline
3‧‧‧中間鏈輪 3‧‧‧Intermediate sprocket
4‧‧‧緊固件 4‧‧‧fasteners
5‧‧‧分隔台 5‧‧‧ separate table
6‧‧‧插孔 6‧‧‧ jack
圖1 是本發明實施例的立體示意圖;圖2 是本發明實施例的組裝示意圖。 1 is a perspective view of an embodiment of the present invention; and FIG. 2 is an assembled view of an embodiment of the present invention.
本發明為一種自行車後鏈輪組件,如圖1、2所示,其包括有至少三個由大往小平行排列的鏈輪,其中最大、小鏈輪1、2為輪輻式鏈輪,在該最大、小鏈輪1、2的中心處設有能套接在自行車後花鼓外的花鍵11、21;而中間鏈輪3為空心環式鏈輪,即中間鏈輪3的中心處不與自行車的後 花鼓直接接觸;相鄰的鏈輪之間通過呈圓周間隔分佈的若干個緊固件4連接,在緊固件4上設有將相鄰鏈輪平行分隔開的分隔台5。由於本發明是通過最大、小鏈輪1、2的花鍵11、21來套接在自行車的後花鼓上的,而中間鏈輪3不與自行車的後花鼓套接,這樣中間鏈輪可以做成空心環式,於是可以大大減輕中間鏈輪的重量,節省材料,當後鏈輪組件的鏈輪數量越多時,其減輕的重量更為明顯,所以當本發明應用到變速數量越多的自行車傳動機構上後,自行車的重量仍然大為減輕,並滿足騎車者的速度追求,所以本發明可以實現輕量化,其結構合理、生產成本低;另外,無需特定的後花鼓與之配合,這樣鏈輪組件的生產和裝配簡單、容易;與此同時,由於本發明通過兩側的最大、小鏈輪1、2套接在後花鼓上,這兩個鏈輪同時受力,這樣可以確保鏈輪組件的扭轉剛度,不易出現變形,從而保證自行車的安全性和可靠性。 The present invention is a bicycle rear sprocket assembly, as shown in Figures 1 and 2, which includes at least three sprocket wheels arranged in parallel from large to small, wherein the largest and small sprocket wheels 1, 2 are spoke sprocket wheels, The center of the largest and small sprockets 1, 2 is provided with splines 11 and 21 which can be sleeved outside the rear drum of the bicycle; and the intermediate sprocket 3 is a hollow ring type sprocket, that is, the center of the intermediate sprocket 3 is not After the bike The hub is in direct contact; adjacent sprocket wheels are connected by a plurality of fasteners 4 distributed circumferentially, and the fastener 4 is provided with a partition 5 which separates adjacent sprockets in parallel. Since the present invention is sleeved on the rear hub of the bicycle through the splines 11, 21 of the largest and small sprocket 1, 2, and the intermediate sprocket 3 is not spliced with the rear hub of the bicycle, the intermediate sprocket can be made The hollow ring type can greatly reduce the weight of the intermediate sprocket and save material. When the number of sprocket wheels of the rear sprocket assembly increases, the weight is reduced, so when the invention is applied to the shifting quantity, After the bicycle transmission mechanism, the weight of the bicycle is still greatly reduced, and the speed of the rider is satisfied, so the invention can realize the weight reduction, the structure is reasonable, the production cost is low, and the specific rear hub is not required to cooperate with the bicycle. Thus, the production and assembly of the sprocket assembly is simple and easy; at the same time, since the present invention is sleeved on the rear hub by the largest and small sprockets 1, 2 on both sides, the two sprockets are simultaneously stressed, thus ensuring The torsional rigidity of the sprocket assembly is not easily deformed, thus ensuring the safety and reliability of the bicycle.
緊固件4通常是螺釘或鉚釘結構,它一端鉚接或擰在相鄰鏈輪中的其中一個鏈輪上,另一端可以插入到另一輪鏈的對應插孔6中。在本實施例中,如圖2所示,緊固件4是鉚釘,它鉚接在相鄰兩鏈輪之間較大的那個鏈輪上,當然,也可以鉚接在較小的那個鏈輪上,甚至可以交錯鉚接在大、小鏈輪上,再在大、小鏈輪上交錯地設置對應插孔。 The fastener 4 is typically a screw or rivet structure that is riveted or screwed at one end of one of the adjacent sprockets and the other end of which can be inserted into a corresponding receptacle 6 of the other chain. In the present embodiment, as shown in FIG. 2, the fastener 4 is a rivet which is riveted to the larger sprocket between the adjacent two sprockets, and of course, can be riveted to the smaller sprocket. It can even be staggered on the large and small sprocket wheels, and then the corresponding jacks are alternately arranged on the large and small sprocket wheels.
在本實施例中,如圖2所示,最大鏈輪1上的花鍵11端部剛好與最小鏈輪2的花鍵21端部接觸對接,這樣可以增大與後花鼓的套接面積,從而增強整個鏈輪組件的扭轉剛度。 In this embodiment, as shown in FIG. 2, the end of the spline 11 on the largest sprocket 1 is just in contact with the end of the spline 21 of the smallest sprocket 2, which can increase the sleeve area with the rear hub. Thereby enhancing the torsional stiffness of the entire sprocket assembly.
在本實施中,分隔台5為直接套在緊固件上的圓圈,當然,它也可以與緊固件一起成型。 In the present embodiment, the partition 5 is a circle that is directly fitted over the fastener. Of course, it can also be formed with the fastener.
在本實施例中,後鏈輪組件有三個鏈輪,於是中間鏈輪3只有一個;當然後鏈輪組件有四個或以上鏈輪,這時中間鏈輪就有兩個或以上。 In the present embodiment, the rear sprocket assembly has three sprocket wheels, so that there is only one intermediate sprocket 3; when the sprocket assembly then has four or more sprockets, then the intermediate sprocket has two or more.
儘管參照本實施例對本發明進行了說明,但是應當理解為可以在本發明構思的主旨和範圍內進行多種改進。因此,本發明不限於所述的實施例,而是由權利要求書所述的全部範圍。 While the invention has been described with reference to the embodiments thereof, it is understood that various modifications can be made within the spirit and scope of the inventive concept. Therefore, the invention is not limited to the described embodiments, but rather the full scope of the claims.
1,2‧‧‧鏈輪 1,2‧‧‧Sprocket
11,21‧‧‧花鍵 11, 21‧‧‧ spline
3‧‧‧中間鏈輪 3‧‧‧Intermediate sprocket
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201110310734.6A CN102328724B (en) | 2011-10-14 | 2011-10-14 | Bicycle rear sprocket assembly |
Publications (2)
Publication Number | Publication Date |
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TW201341265A TW201341265A (en) | 2013-10-16 |
TWI534038B true TWI534038B (en) | 2016-05-21 |
Family
ID=45480749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW101137875A TWI534038B (en) | 2011-10-14 | 2012-10-12 | Bicycle rear sprocket assembly |
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CN (1) | CN102328724B (en) |
TW (1) | TWI534038B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI780111B (en) * | 2017-02-13 | 2022-10-11 | 義大利商坎帕克諾羅公司 | Toothed wheel assembly for sprocket assembly |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015203708A1 (en) * | 2015-03-02 | 2016-09-08 | Sram Deutschland Gmbh | Gear for a bicycle drive |
US9994285B2 (en) * | 2016-06-15 | 2018-06-12 | Shimano Inc. | Multiple bicycle sprocket assembly |
US10550925B2 (en) * | 2017-06-02 | 2020-02-04 | Shimano Inc. | Bicycle sprocket |
TWI712545B (en) * | 2020-02-27 | 2020-12-11 | 天心工業股份有限公司 | Bicycle transmission |
JP2023180031A (en) | 2022-06-08 | 2023-12-20 | 株式会社シマノ | Human-powered driven vehicle rear sprocket and human-powered driven vehicle rear sprocket assembly |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5612083Y2 (en) * | 1977-09-29 | 1981-03-19 | ||
FR2571329B1 (en) * | 1984-10-09 | 1987-04-24 | Bouffard Claude | SPROCKET ADAPTABLE TO A BICYCLE REAR WHEEL HUB AND A FREEWHEEL REAR HUB USING SUCH A SPROCKET |
US5964332A (en) * | 1996-09-05 | 1999-10-12 | King; Christopher D. | Rear hub drive engagement mechanism |
US6866604B2 (en) * | 2003-01-17 | 2005-03-15 | Shimano, Inc. | Multiple level sprocket support for a bicycle |
ITMI20071658A1 (en) * | 2007-08-09 | 2009-02-10 | Campagnolo Srl | PINION MODULE FOR A BICYCLE AND SPROCKET PACK INCLUDING THIS MODULE |
-
2011
- 2011-10-14 CN CN201110310734.6A patent/CN102328724B/en active Active
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2012
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI780111B (en) * | 2017-02-13 | 2022-10-11 | 義大利商坎帕克諾羅公司 | Toothed wheel assembly for sprocket assembly |
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CN102328724A (en) | 2012-01-25 |
TW201341265A (en) | 2013-10-16 |
CN102328724B (en) | 2014-06-04 |
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