TWI641527B - Bicycle drop chain automatic returning structure - Google Patents

Bicycle drop chain automatic returning structure Download PDF

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Publication number
TWI641527B
TWI641527B TW107114131A TW107114131A TWI641527B TW I641527 B TWI641527 B TW I641527B TW 107114131 A TW107114131 A TW 107114131A TW 107114131 A TW107114131 A TW 107114131A TW I641527 B TWI641527 B TW I641527B
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Taiwan
Prior art keywords
chain
crank
guide
stopper
fixed
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TW107114131A
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Chinese (zh)
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TW201945241A (en
Inventor
高煜昇
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大陸商浩盟車料（上海）有限公司
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Priority to TW107114131A priority Critical patent/TWI641527B/en
Priority to CN201821280859.2U priority patent/CN208731177U/en
Priority to CN201810904477.0A priority patent/CN108891523B/en
Application granted granted Critical
Publication of TWI641527B publication Critical patent/TWI641527B/en
Publication of TW201945241A publication Critical patent/TW201945241A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/16—Tensioning or adjusting equipment for chains, belts or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Transmission Devices (AREA)

Abstract

一種自行車落鏈自動導回結構，主要係於一曲柄之異於踏板的另一端設有一擋塊，以及於該曲柄之中央處內側面設有一導引塊，該擋塊可於該曲柄的另一端形成一槽溝，該導引塊上具有一導引弧面，當發生落鏈時，可藉由該擋塊擋住該鏈條，然後繼續踩動踏板使該導引塊將該鏈條向上提拉到該齒盤的上方，使該鏈條順著該導引弧面向下滑落於齒盤的鏈齒上而自動上鏈，如此便可避免發生落鏈時突然減速或停止所造成之追撞等危險，而且更是無需下車手動上鏈，而可大幅提高騎行之便利性。 A bicycle drop chain automatic guide structure is mainly provided with a stopper at the other end of a crank which is different from the pedal, and a guide block at the inner side of the center of the crank. The stopper can be located at the other end of the crank A groove is formed at one end, and the guide block has a guide arc surface. When a chain drop occurs, the chain can be blocked by the stopper, and then the pedal is continued to be pressed to lift the chain upward by the guide block. Go to the top of the chainring, make the chain slide down on the chainring's sprocket along the guide arc, and automatically wind up, so as to avoid the danger of chasing caused by sudden deceleration or stopping when the chain falls , And there is no need to get off the car and wind the chain manually, which can greatly improve the convenience of riding.

Description

自行車落鏈自動導回結構 Bicycle drop chain automatic returning structure

本發明係關於一種自行車落鏈自動導回結構方面的技術領域，尤指一種在自行車落鏈時只要繼續踩動踏板即能自動上鏈，而可降低落鏈時突然減速之危險及避免下車手動上鏈的麻煩之自行車落鏈自動導回結構者。 The invention relates to the technical field of an automatic return structure of a bicycle drop chain, in particular to a chain that can be automatically wound as long as the pedal is continuously depressed when the bicycle drops the chain, which can reduce the risk of sudden deceleration during the fall of the chain and avoid manual disembarkation. Wind up trouble bikes will automatically return to the structure.

一般習知的自行車在行進時發生落鏈之狀況時，會因喪失了驅動力而產生突然減速直至停止的情形，甚至有時會發生鏈條卡住之狀況而導致自行車驟然停止之情形，而落鏈所導致之突然減速或驟然停止之情形，係易使後方來車閃避不及而發生追撞之危險。尤其是，一般習知自行車在落鏈時通常係需下車進行手動上鏈之動作來排除落鏈之狀況，方可再繼續騎行，而下車手動上鏈不但費時費力，而且更是會弄髒雙手而非常的麻煩不方便，特別是在比賽時更是會浪費時間而造成嚴重的落後，進而影響比賽成績。 When a conventionally-known bicycle falls off the chain while traveling, it will suddenly decelerate to a stop due to the loss of driving force, and sometimes even a situation where the chain is stuck and the bicycle suddenly stops and falls off. The sudden deceleration or sudden stop caused by the chain is easy to make the car coming behind avoid the danger of chasing. In particular, it is generally known that when a bicycle is dropped, it is usually necessary to get off the vehicle and perform a manual winding operation to eliminate the condition of the falling chain before continuing to ride. The manual winding of the bicycle is not only time-consuming and laborious, but it will also stain the bicycle. It is very inconvenient to use hands, especially during the game, it will waste time and cause serious backwardness, which will affect the performance of the game.

有鑒於此，本發明人乃係針對上述之問題，而深入構思，且積極研究改良試做而開發設計出本發明。 In view of this, the present inventors have conceived in depth in view of the above problems, and actively researched and improved the trial and develop to design the present invention.

本發明之主要目的係在於解決習知自行車在落鏈 時無法即時上鏈而易因突然減速或驟然停止造成後方來車追撞之危險，以及需下車手動上鏈而具有費時費力、會弄髒雙手等非常麻煩之問題。 The main purpose of the present invention is to solve the problem It is not easy to wind up immediately, and it is easy to cause the danger of rear car chasing due to sudden deceleration or sudden stop, and it is time-consuming, labor-intensive, and soiling your hands.

本發明係提供一種自行車落鏈自動導回結構，包括一曲柄、一齒盤、一擋塊及一導引塊。其中，該曲柄係一端的外側面結合有一踏板。該齒盤係結合固定在該曲柄另一端之內側面上可被該曲柄驅動旋轉，該齒盤上繞設有一鏈條。該擋塊係設於該曲柄的另一端，使該擋塊與該齒盤之間形成位於該曲柄另一端之周面上之一槽溝，該槽溝可供在落鏈時將該鏈條擋在該曲柄的另一端上。該導引塊係設於該曲柄中央處的內側面上，其之下部與該齒盤之間維持可供該鏈條之一側鏈片通過之間隙，上部則高於該齒盤之外周面且具有一導引弧面，當該導引塊隨著該曲柄被向上帶動到一適當高度時，該鏈條則可被提拉到該齒盤的上側然後順著該導引弧面向下滑落而卡設於該齒盤的鏈齒上以形成自動上鏈之狀態。 The invention provides a bicycle drop chain automatic returning structure, which includes a crank, a toothed disc, a stop and a guide block. Wherein, a pedal is combined on the outer side of one end of the crank train. The chainring is fixed on the inner side of the other end of the crank and can be driven and rotated by the crank, and a chain is wound on the chainring. The stopper is arranged at the other end of the crank, so that a groove is formed between the stopper and the gear plate on the peripheral surface of the other end of the crank, and the groove can be used to stop the chain when the chain is dropped. On the other end of the crank. The guide block is provided on the inner side of the center of the crank, and the gap between the lower part and the chainring can be passed by one side chain of the chain, and the upper part is higher than the outer peripheral surface of the chainring and With a guide arc surface, when the guide block is driven upward to an appropriate height with the crank, the chain can be pulled up to the upper side of the chainring and then slid down along the guide arc surface and stuck. It is set on the sprocket of the sprocket to form a state of automatic winding.

本發明所提供之自行車落鏈自動導回結構，係在發生落鏈之狀況時，可藉由該擋塊擋住該鏈條，然後繼續踩動踏板使該導引塊將該鏈條向上提拉到該齒盤的上方，使該鏈條順著該導引弧面向下滑落而自動上鏈，如此便可避免發生落鏈時突然減速或停止所造成之追撞等危險，而且更是無需下車手動上鏈，而可大幅提高騎行之便利性，特別是在比賽時更是可因此節省大量的上鏈時間，而可提昇比賽成績。 The bicycle drop chain automatic guide structure provided by the present invention can stop the chain by the stopper when the chain drop condition occurs, and then continue to step on the pedal to cause the guide block to pull the chain upward to the chain. Above the gear plate, the chain is automatically wound up and down along the guide arc. This can avoid the danger of chasing caused by sudden deceleration or stopping when the chain is dropped, and there is no need to get off the chain and manually wind up. , Which can greatly improve the convenience of riding, especially during the race, it can save a lot of time on the chain, and can improve the performance.

10‧‧‧曲柄 10‧‧‧ crank

11‧‧‧踏板 11‧‧‧ pedal

12‧‧‧螺孔 12‧‧‧ screw hole

13‧‧‧固定爪 13‧‧‧Fixed claw

20‧‧‧齒盤 20‧‧‧toothed disc

21‧‧‧齒盤螺栓 21‧‧‧toothed plate bolt

22‧‧‧鏈條 22‧‧‧Chain

30‧‧‧擋塊 30‧‧‧ stop

31‧‧‧擋塊螺栓 31‧‧‧ Stop bolt

32‧‧‧槽溝 32‧‧‧Slot

33‧‧‧導斜面 33‧‧‧ Guide slope

40‧‧‧導引塊 40‧‧‧Guide block

41‧‧‧導引塊螺栓 41‧‧‧Guide block bolt

42‧‧‧導引弧面 42‧‧‧Guide Arc

第1圖係本發明第一實施例之立體分解示意圖。 FIG. 1 is a three-dimensional exploded view of the first embodiment of the present invention.

第2圖係本發明第一實施例之立體組合示意圖。 FIG. 2 is a schematic diagram of a three-dimensional combination of the first embodiment of the present invention.

第3圖係本發明第一實施例後側之立體組合示意圖。 FIG. 3 is a schematic diagram of a three-dimensional combination of the rear side of the first embodiment of the present invention.

第4圖係本發明第一實施例落鏈時之前視動作示意圖。 FIG. 4 is a schematic view of the forward-looking action when the chain is dropped according to the first embodiment of the present invention.

第5圖係第4圖之俯視示意圖。 Figure 5 is a schematic plan view of Figure 4.

第6圖係本發明第一實施例之自動上鏈之前視動作示意圖。 FIG. 6 is a schematic view of a front view of an automatic winding operation according to the first embodiment of the present invention.

第7圖係第6圖之右視示意圖。 Figure 7 is a schematic right-hand view of Figure 6.

第8圖係本發明之第二實施例。 Fig. 8 is a second embodiment of the present invention.

第9圖係本發明之第三實施例。 Fig. 9 is a third embodiment of the present invention.

第10圖係本發明之第四實施例的立體分解示意圖。 Fig. 10 is an exploded perspective view of a fourth embodiment of the present invention.

第11圖係本發明之第四實施例的立體組合示意圖。 FIG. 11 is a schematic three-dimensional assembly diagram of the fourth embodiment of the present invention.

第12圖係本發明之第五實施例。 Fig. 12 is a fifth embodiment of the present invention.

請參閱第1~7圖所示，係為本發明所述之自行車落鏈自動導回結構的第一實施例，在第1~5圖中係顯示本實施例之自行車落鏈自動導回結構包括一曲柄10、一齒盤20、一擋塊30及一導引塊40。其中：該曲柄10，係一端的外側面結合有一踏板11。 Please refer to FIG. 1 to FIG. 7, which is the first embodiment of the bicycle chain drop-out automatic guide structure according to the present invention, and FIGS. 1 to 5 show the bicycle drop-chain automatic return structure of this embodiment. It includes a crank 10, a toothed disc 20, a stopper 30 and a guide block 40. Wherein: the crank 10 is combined with a pedal 11 on the outer side of one end.

該齒盤20，係利用複數齒盤螺栓21將其結合固定在該曲柄10另一端之內側面上，使可供被該曲柄10驅動旋轉，於該 齒盤20上並繞設有一鏈條22。 The sprocket 20 is coupled and fixed to the inner side of the other end of the crank 10 by a plurality of sprocket bolts 21, so that the crank 10 can be driven and rotated by the crank 10. A chain 22 is wound around the toothed disc 20.

該擋塊30，係利用複數擋塊螺栓31將其螺鎖固定在該曲柄10的另一端，使該擋塊30與該齒盤20之間形成位於該曲柄10另一端之周面上之一槽溝32，該槽溝32係可供在落鏈時將該鏈條22擋在該曲柄10的另一端上，以防止該鏈條22掉到該曲柄10的外側面。該擋塊30的周面係形成有由外向內逐漸低斜之一導斜面33，使可更進一步提昇阻擋該鏈條22之效果。在本發明中，該槽溝32亦可直接設於該擋塊30之周面上，而此乃上述結構之簡單變化，此不再另加以贅述。 The stopper 30 is fixed to the other end of the crank 10 by a plurality of stopper bolts 31 so that the stopper 30 and the toothed disc 20 form one of the peripheral surfaces on the other end of the crank 10. The groove 32 is used to stop the chain 22 on the other end of the crank 10 when the chain is dropped, so as to prevent the chain 22 from falling to the outer side of the crank 10. A guide surface 33 is formed on the peripheral surface of the stopper 30 and gradually slopes downward from the outside to the inside, so that the effect of blocking the chain 22 can be further improved. In the present invention, the groove 32 can also be directly provided on the peripheral surface of the stopper 30, and this is a simple change of the above structure, which will not be described in detail here.

該導引塊40，係利用複數導引塊螺栓41將其螺鎖固定在該曲柄10中央處的內側面上，其之下部與該齒盤20之間維持可供該鏈條22之一側鏈片通過之間隙，上部則高於該齒盤20之外周面，且具有一導引弧面42，該導引弧面42之弧面係由前向後逐漸減小，當該導引塊40被該曲柄10向上帶動到一高度時，該鏈條22係會被提拉到該齒盤20的上側然後順著該導引弧面42向下滑落而卡設於該齒盤20的鏈齒上而形成上鏈之狀態。 The guide block 40 is fixed on the inner surface of the crank 10 by a plurality of guide block bolts 41 at the center of the crank 10, and a side chain for the chain 22 can be maintained between the lower part and the toothed plate 20. The gap through which the sheet passes, the upper part is higher than the outer peripheral surface of the sprocket 20, and has a guide arc surface 42. The arc surface of the guide arc surface 42 gradually decreases from front to back. When the guide block 40 is When the crank 10 is driven upward to a height, the chain 22 is pulled to the upper side of the chainring 20 and then slides downward along the guide arc surface 42 and is caught on the chain teeth of the chainring 20 Formed on the chain.

在第4、5圖中係指出，當自行車落鏈時，該鏈條22係會被擋在該擋塊30與該齒盤20之間所形成之槽溝32之中。 In FIGS. 4 and 5, it is pointed out that when the bicycle falls off the chain, the chain 22 is blocked in the groove 32 formed between the stopper 30 and the toothed plate 20.

在第6、7圖中係顯示，當在落鏈時繼續踩動另一側曲柄10上之踏板11而使該曲柄10順時針旋轉時，則結合於該曲柄10內側之導引塊40便會隨著該曲柄10的旋轉而向上位移，進而將該鏈條22向上提拉到該齒盤20的上方，使該鏈條22順著該導引弧 面42向下滑落而卡設於該齒盤20的鏈齒上而形成自動上鏈之狀態。 Figures 6 and 7 show that when the pedal 10 on the crank 10 on the other side is continuously depressed and the crank 10 is rotated clockwise when the chain is dropped, the guide block 40 on the inside of the crank 10 Will be displaced upward as the crank 10 rotates, and then the chain 22 will be pulled upwards above the chainring 20 so that the chain 22 follows the guide arc The surface 42 slides downward and is caught on the sprocket of the chainring 20 to form a state of automatic winding.

本發明所提供之自行車落鏈自動導回結構，係在發生落鏈之狀況時，可先藉由該擋塊30擋住該鏈條22，然後利用繼續踩動踏板11使該導引塊40將該鏈條22向上提拉到該齒盤20的上方，使該鏈條22順著該導引弧面42向下滑落而自動上鏈，如此便可避免發生落鏈時突然減速或停止所造成之追撞等危險，而且更是無需下車手動上鏈，而可大幅提高騎行之便利性，特別是在比賽時更是可因此節省大量的上鏈時間，而可提昇比賽成績。 In the present invention, the bicycle drop chain automatic guide structure is provided. When a drop chain condition occurs, the chain 22 can be blocked by the stopper 30 first, and then the guide block 40 can be moved by stepping on the pedal 11 The chain 22 is pulled upward to the top of the chainring 20, so that the chain 22 slides down along the guide arc surface 42 and automatically winds up, so as to avoid the collision caused by the sudden deceleration or stop when the chain is dropped. And other dangers, and there is no need to get off the car and wind up manually, which can greatly improve the convenience of riding, especially during the race, it can save a lot of time to wind up, and can improve the performance of the race.

請參閱第8圖所示，係為本發明所述之自行車落鏈自動導回結構之第二實施例，其之結構與第一實施例大致相同，差別僅在於本實施例之曲柄10上係間隔設置有複數螺孔12，可供該複數導引塊螺栓41可選擇的螺設，以使該導引塊41可配合不同尺寸規格之齒盤20而結合於曲柄10相對應之適當位置處。 Please refer to FIG. 8, which is a second embodiment of the bicycle drop chain automatic guide structure according to the present invention. The structure is substantially the same as the first embodiment, and the difference is only in the crank 10 of this embodiment. A plurality of screw holes 12 are provided at intervals, and the plurality of guide block bolts 41 can be optionally screwed, so that the guide block 41 can be matched with the tooth plate 20 of different sizes and combined at an appropriate position corresponding to the crank 10 .

請參閱第9圖所示，係為本發明所述之自行車落鏈自動導回結構之第三實施例，其之結構與第一實施例大致相同，差別僅在於本實施例之該擋塊30及該導引塊40係一體成型於該曲柄10上。當然在本實施例中，該擋塊30及該導引塊40亦可僅其中任一者一體成型於該曲柄10上，此不再另外加以贅述。 Please refer to FIG. 9, which is the third embodiment of the bicycle drop chain automatic return structure according to the present invention. The structure is substantially the same as that of the first embodiment, and the difference is only in the stopper 30 of this embodiment. And the guide block 40 is integrally formed on the crank 10. Of course, in this embodiment, only either one of the stopper 30 and the guide block 40 may be integrally formed on the crank 10, which will not be described in detail here.

請參閱第10、11圖所示，係為本發明所述之自行車落鏈自動導回結構之第四實施例，其之結構與第一實施例大致相同，差別僅在於本實施例之曲柄10的另一端係延伸出複數固定爪 13可供與該齒盤20結合，該擋塊30係呈C形之環片狀，且利用該複數擋塊螺栓31將其螺鎖在該複數固定爪13上，並使該擋塊30的周邊凸伸出該複數固定爪13的端面，進而使該擋塊30與該齒盤20之間形成位於該複數固定爪13端面上之複數槽溝32，可供在落鏈時將該鏈條22擋在該曲柄10的另一端的複數固定爪13上。 Please refer to FIG. 10 and FIG. 11, which is the fourth embodiment of the bicycle chain drop-out automatic guide structure according to the present invention. The structure is substantially the same as the first embodiment, and the difference is only in the crank 10 of this embodiment. A plurality of fixed claws 13 can be combined with the toothed plate 20, the stopper 30 is a C-shaped ring piece, and the plurality of stopper bolts 31 are used to screw it to the plurality of fixed claws 13, and make the stopper 30 The periphery protrudes from the end surface of the plurality of fixed claws 13, so that a plurality of grooves 32 on the end surface of the plurality of fixed claws 13 are formed between the stopper 30 and the tooth plate 20, so that the chain 22 can be used when the chain is dropped. A plurality of fixed claws 13 are blocked on the other end of the crank 10.

請參閱第12圖所示，係為本發明所述之自行車落鏈自動導回結構之第五實施例，其之結構與第一實施例大致相同，差別僅在於本實施例之曲柄10的另一端係延伸出複數固定爪13可供與該齒盤20結合，該複數固定爪13的端部係分別一體凸設有複數擋塊30，該複數擋塊30的端部係凸伸出該複數固定爪13的端面，使該擋塊30與該齒盤20之間形成位於該複數固定爪13端面上之複數槽溝32，可供在落鏈時將該鏈條22擋在該曲柄10的另一端的複數固定爪13。 Please refer to FIG. 12, which is a fifth embodiment of the bicycle chain drop-out automatic guide structure according to the present invention. The structure is substantially the same as that of the first embodiment, and the difference is only in the other of the crank 10 of this embodiment. One end is extended with a plurality of fixed claws 13 to be combined with the toothed disc 20, and the ends of the plurality of fixed claws 13 are respectively integrally provided with a plurality of stoppers 30, and the ends of the plurality of stoppers 30 are convexly protruding from the plurality The end surface of the fixed claw 13 forms a plurality of grooves 32 on the end surface of the plurality of fixed claws 13 between the stopper 30 and the toothed plate 20, which can be used to block the chain 22 against another of the crank 10 when the chain is dropped. One end of the plurality of fixed claws 13.

綜上所述，由於本發明具有上述優點及實用價值，而且在同類產品中均未見有類似之產品發表，故已符合發明專利之申請要件，乃爰依法提出申請。 In summary, since the present invention has the above-mentioned advantages and practical values, and no similar products have been published in similar products, the application requirements for invention patents have been met, and applications have been filed in accordance with the law.

Claims (11)

一種自行車落鏈自動導回結構，包括：一曲柄，係一端的外側面結合有一踏板；一齒盤，係結合固定在該曲柄另一端之內側面上可被該曲柄驅動旋轉，該齒盤上繞設有一鏈條；一擋塊，係設於該曲柄的另一端，使該擋塊與該齒盤之間形成位於該曲柄另一端之周面上之一槽溝，該槽溝可供在落鏈時將該鏈條擋在該曲柄的另一端上；以及一導引塊，係設於該曲柄中央處的內側面上，其之下部與該齒盤之間維持可供該鏈條之一側鏈片通過之間隙，上部則高於該齒盤之外周面且具有一導引弧面，當該導引塊隨著該曲柄被向上帶動到一適當高度時，係可將該鏈條提拉到該齒盤的上側，然後使該鏈條順著該導引弧面向下滑落而卡設於該齒盤的鏈齒上而形成自動上鏈之狀態。A bicycle drop-chain automatic returning structure includes a crank, a pedal coupled to the outer side of one end of the system, and a toothed disc, which is fixed on the inner side of the other end of the crank and can be driven to rotate by the crank. A chain is wound around; a stopper is attached to the other end of the crank, so that a groove is formed between the stopper and the toothed disc on the peripheral surface of the other end of the crank, and the groove can be used for falling The chain is blocked on the other end of the crank when it is chained; and a guide block is provided on the inner side of the center of the crank, and a side chain for the chain can be maintained between the lower part and the chainring The gap through which the piece passes, the upper part is higher than the outer peripheral surface of the toothed disc and has a guide arc surface. When the guide block is driven upward to a proper height with the crank, the chain can be pulled to the The upper side of the toothed disc is then caused to slide down the chain along the guide arc surface, and the chain is clamped on the teeth of the toothed disc to form an automatic winding state. 如請求項1所述之自行車落鏈自動導回結構，其中該齒盤係利用複數齒盤螺栓將其結合固定在該曲柄上。The bicycle drop chain automatic guide structure according to claim 1, wherein the chainring is fixed on the crank by a plurality of chainring bolts. 如請求項1所述之自行車落鏈自動導回結構，其中該擋塊的周面形成有由外向內逐漸低斜之一導斜面，使可更進一步提昇擋鏈效果。The bicycle drop chain automatic guide structure according to claim 1, wherein the guide block is formed with a guide slope that gradually slopes downward from outside to inside, so that the effect of the chain can be further improved. 如請求項1所述之自行車落鏈自動導回結構，其中該擋塊係一體成型於該曲柄上。The bicycle drop chain automatic guide structure according to claim 1, wherein the stopper is integrally formed on the crank. 如請求項1或4所述之自行車落鏈自動導回結構，其中該導引塊係一體成型於該曲柄上。The bicycle drop chain automatic guide structure according to claim 1 or 4, wherein the guide block is integrally formed on the crank. 如請求項1所述之自行車落鏈自動導回結構，其中該擋塊係利用複數擋塊螺栓將其螺鎖固定在該曲柄上。The bicycle drop chain automatic guide structure according to claim 1, wherein the stopper is fixed to the crank by a plurality of stopper bolts. 如請求項6所述之自行車落鏈自動導回結構，其中該曲柄之另一端係延伸出複數固定爪可供與該齒盤結合，該擋塊係呈C形之環片狀，且利用該複數擋塊螺栓將其螺鎖在該複數固定爪上，使該擋塊的周邊凸伸出該複數固定爪的端面，進而使該擋塊與該齒盤之間形成位於該複數固定爪端面上之複數槽溝，可供在落鏈時將該鏈條擋在該曲柄的另一端的複數固定爪上。The bicycle drop chain automatic return structure according to claim 6, wherein the other end of the crank is extended with a plurality of fixed claws for combining with the chainring, and the stopper is in the shape of a C-shaped ring piece, and uses the A plurality of stopper bolts are screw-locked to the plurality of fixed claws, so that the periphery of the stopper protrudes beyond the end surface of the plurality of fixed claws, so that the stopper and the toothed disc are formed on the end faces of the plurality of fixed claws. The plurality of grooves can be used to stop the chain on the plurality of fixed claws on the other end of the crank when the chain is dropped. 如請求項1所述之自行車落鏈自動導回結構，其中該導引塊係利用複數導引塊螺栓將其螺鎖固定在該曲柄上。The bicycle drop chain automatic guide structure according to claim 1, wherein the guide block is fixed to the crank by a plurality of guide block bolts. 如請求項8所述之自行車落鏈自動導回結構，其中該曲柄上係間隔設置有複數螺孔，該複數螺孔可供該複數導引塊螺栓可選擇的螺設，以使該導引塊可配合不同尺寸規格之齒盤而結合於曲柄相對應之適當位置處。The bicycle drop chain automatic guide structure according to claim 8, wherein the crank is provided with a plurality of screw holes at intervals, and the plurality of screw holes are provided for optional screwing of the plurality of guide block bolts so that the guide The block can be combined with the tooth plate of different sizes and specifications at the appropriate position corresponding to the crank. 如請求項1所述之自行車落鏈自動導回結構，其中該導引弧面之弧面係由前向後逐漸減小。The bicycle drop chain automatic guide structure according to claim 1, wherein the arc surface of the guide arc surface gradually decreases from front to back. 一種自行車落鏈自動導回結構，包括：一曲柄，係一端的外側面結合有一踏板，另一端係延伸出複數固定爪；一齒盤，係結合固定在該複數固定夾爪上可被該曲柄驅動旋轉，該齒盤上繞設有一鏈條；複數擋塊，係一體凸設於該複數固定夾爪的端部，且該複數擋塊的端部係凸伸出該複數固定爪的端面，使該擋塊與該齒盤之間形成有位於該複數固定爪端面上之複數槽溝，可供在落鏈時將該鏈條擋在該曲柄另一端的複數固定爪上；以及一導引塊，係設於該曲柄中央處的內側面上，其之下部與該齒盤之間維持可供該鏈條之一側鏈片通過之間隙，上部則高於該齒盤之外周面且具有一導引弧面，當該導引塊隨著該曲柄被向上帶動到一適當高度時，係可將該鏈條提拉到該齒盤的上側，然後使該鏈條順著該導引弧面向下滑落而卡設於該齒盤的鏈齒上而形成自動上鏈之狀態。A bicycle drop-chain automatic returning structure includes a crank, a pedal coupled to the outer side of one end, and a plurality of fixed claws extending from the other end; a toothed disc, which is fixed to the plurality of fixed clamping claws and can be used by the crank. Driven by rotation, a chain is provided on the toothed disc; a plurality of stoppers are integrally protruded at the ends of the plurality of fixed jaws, and the ends of the plurality of stoppers protrude from the end faces of the plurality of fixed jaws so that A plurality of grooves on the end face of the plurality of fixed claws are formed between the stopper and the tooth plate, so that the chain can be stopped on the plurality of fixed claws at the other end of the crank when the chain is dropped; and a guide block, It is located on the inner side of the center of the crank, and the gap between the lower part and the chainring can be passed by one side chain of the chain. The upper part is higher than the outer peripheral surface of the chainring and has a guide. Arc surface, when the guide block is driven upward to an appropriate height with the crank, the chain can be pulled up to the upper side of the chainring, and then the chain is slid down along the guide arc and stuck Set on the sprocket of the chainring to form automatic winding State.
TW107114131A 2018-04-26 2018-04-26 Bicycle drop chain automatic returning structure TWI641527B (en)

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CN201821280859.2U CN208731177U (en) 2018-04-26 2018-08-09 Automatic guiding structure for chain falling of bicycle
CN201810904477.0A CN108891523B (en) 2018-04-26 2018-08-09 Automatic chain-falling guiding structure for bicycle

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