CN108891523B - Automatic chain-falling guiding structure for bicycle - Google Patents
Automatic chain-falling guiding structure for bicycle Download PDFInfo
- Publication number
- CN108891523B CN108891523B CN201810904477.0A CN201810904477A CN108891523B CN 108891523 B CN108891523 B CN 108891523B CN 201810904477 A CN201810904477 A CN 201810904477A CN 108891523 B CN108891523 B CN 108891523B
- Authority
- CN
- China
- Prior art keywords
- chain
- crank
- guide
- fluted disc
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000000078 claw Anatomy 0.000 claims description 26
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses an automatic chain falling guiding structure of a bicycle, which is mainly characterized in that the other end of a crank, which is different from a pedal, is provided with a stop block, the inner side surface of the center of the crank is provided with a guiding block, the stop block can form a groove at the other end of the crank, the guiding block is provided with a guiding cambered surface, when chain falling occurs, the chain can be blocked by the stop block, and then the pedal is continuously stepped on to enable the guiding block to lift the chain upwards above a fluted disc, so that the chain slides downwards on the sprocket teeth of the fluted disc along the guiding cambered surface to automatically lift the chain, the danger of overtaking collision and the like caused by sudden deceleration or stopping when the chain falling occurs can be avoided, and the convenience of riding can be greatly improved without manually lifting the chain when the bicycle is started.
Description
Technical Field
The invention relates to the field of bicycles, in particular to an automatic bicycle falling chain guiding structure which can automatically chain by continuously stepping on pedals when a bicycle falls down, can reduce the danger of sudden deceleration when the bicycle falls down and can avoid the trouble of manually falling down to chain.
Background
Generally, when a bicycle falls down during running, the bicycle is suddenly decelerated to a stop due to a loss of driving force, and even the bicycle is suddenly stopped due to a chain jam. The sudden deceleration or sudden stop caused by falling of the chain easily causes the possibility of collision caused by the lack of evasion of the vehicles coming from the back. In particular, in general, when a bicycle falls down, the bicycle usually needs to be taken off to perform manual chain-up action to eliminate the condition of falling down, and the bicycle can be ridden again, and the manual chain-up operation of falling off is time-consuming and labor-consuming, moreover, the hands are polluted, which is very troublesome and inconvenient, and particularly, time is wasted during the competition, so that the competition result is seriously lagged, and the competition result is influenced.
In view of the above, the present inventors have intensively conceived to solve the above-described problems, and have actively studied and tried to develop and design the present invention.
Disclosure of Invention
The invention mainly aims to solve the problems that the existing bicycle cannot be immediately started to be suddenly decelerated or suddenly stopped when the existing bicycle falls down to cause the collision of the rear-end bicycle, and the time and the labor are wasted and hands are polluted due to the fact that the existing bicycle is required to be manually started to be started when the existing bicycle falls down.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
an automatic chain guide return structure for a bicycle, comprising:
the outer side surface of one end of the crank is combined with a pedal;
the fluted disc is combined and fixed on the inner side surface of the other end of the crank and can be driven to rotate by the crank, and a chain is wound on the fluted disc;
the stop block is arranged at the other end of the crank, so that a groove positioned on the peripheral surface of the other end of the crank is formed between the stop block and the fluted disc, and the groove can be used for blocking the chain on the other end of the crank when the chain falls off; and
the guide block is arranged on the inner side surface of the center of the crank, a gap for a chain piece on one side of the chain to pass through is maintained between the lower part of the guide block and the fluted disc, the upper part of the guide block is higher than the outer peripheral surface of the fluted disc and is provided with a guide cambered surface, when the guide block is driven to a proper height along with the upward movement of the crank, the guide block lifts the chain to the upper side of the fluted disc, and then the chain slides downwards along the guide cambered surface to be clamped on the chain teeth of the fluted disc so as to form an automatic chain feeding state.
In a preferred embodiment of the invention, the toothed disc is fixed to the crank by means of a plurality of toothed disc bolts.
In a preferred embodiment of the present invention, the peripheral surface of the stop block is formed with a guiding inclined plane gradually decreasing from outside to inside, so as to further improve the chain blocking effect.
In a preferred embodiment of the invention, the stop is integrally formed on the crank.
In a preferred embodiment of the invention, the guide block is integrally formed on the crank.
In a preferred embodiment of the invention, the stop is fixed to the crank by means of a number of stop bolts.
In a preferred embodiment of the invention, the other end of the crank is extended to form a plurality of fixing claws for the crank to be combined with the fluted disc, the stop dog is in a C-shaped annular sheet shape and is fixed on the plurality of fixing claws by the plurality of stop dog bolts, so that the periphery of the stop dog protrudes out of the end faces of the plurality of fixing claws, and a plurality of grooves positioned on the end faces of the plurality of fixing claws are formed between the stop dog and the fluted disc and can be used for stopping the chain on the plurality of fixing claws at the other end of the crank when the chain falls down.
In a preferred embodiment of the invention, the guide block is fixed to the crank by means of a number of guide block bolts.
In a preferred embodiment of the present invention, the crank is provided with a plurality of screw holes at intervals, and the screw holes can be selectively screwed by the guide block bolts, so that the guide blocks can be combined with fluted discs with different sizes at proper positions corresponding to the crank.
In a preferred embodiment of the invention, the curvature of the guide curvature is tapered from front to back.
An automatic chain guide return structure for a bicycle, comprising:
the outer side surface of one end of the crank is combined with a pedal, and the other end of the crank extends out of a plurality of fixed claws;
the fluted disc is combined and fixed on the fixed claws and can be driven to rotate by the crank, and a chain is wound on the fluted disc;
a plurality of stop blocks integrally protruding from the end parts of the plurality of fixed claws, and the end parts of the plurality of stop blocks protruding from the end surfaces of the plurality of fixed claws, a plurality of grooves positioned on the end surfaces of the fixed claws are formed between the stop block and the fluted disc, so that the chain can be blocked on the fixed claws at the other end of the crank when falling down; and
the guide block is arranged on the inner side surface of the center of the crank, a gap for a chain piece on one side of the chain to pass through is maintained between the lower part of the guide block and the fluted disc, the upper part of the guide block is higher than the outer circumferential surface of the fluted disc and is provided with a guide cambered surface, when the guide block is driven to a proper height along with the upward movement of the crank, the guide block lifts the chain to the upper side of the fluted disc, and then the chain slides downwards along the guide cambered surface to be clamped on the chain teeth of the fluted disc so as to form an automatic chain feeding state.
Due to the adoption of the technical scheme, the automatic chain falling guiding structure for the bicycle can block the chain by the stop block when the chain falling condition occurs, and then continuously treading the pedal to enable the guide block to lift the chain upwards to the upper part of the fluted disc, so that the chain can slide downwards along the guide cambered surface to automatically chain, the danger of collision and the like caused by sudden deceleration or stopping when the chain falling occurs can be avoided, the manual chain falling is not needed, the riding convenience can be greatly improved, and particularly, a large amount of chain-up time can be saved during a competition, and the competition result can be improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an exploded perspective view of embodiment 1 of the present invention.
Fig. 2 is a perspective combined schematic view of embodiment 1 of the present invention.
Fig. 3 is a schematic perspective view of the rear side of embodiment 1 of the present invention.
Fig. 4 is a schematic diagram showing the front view operation of the invention when the chain falls in embodiment 1.
Fig. 5 is a schematic top view of fig. 4.
Fig. 6 is a schematic diagram showing the operation of the automatic winding according to embodiment 1 of the present invention.
Fig. 7 is a right side view schematic of fig. 6.
Fig. 8 is an exploded perspective view of embodiment 2 of the present invention.
Fig. 9 is an exploded perspective view of embodiment 3 of the present invention.
Fig. 10 is an exploded perspective view of embodiment 4 of the present invention.
Fig. 11 is a perspective combined schematic view of embodiment 5 of the present invention.
Fig. 12 is a perspective combined schematic view of embodiment 5 of the present invention.
Reference numerals illustrate: 10: crank, 11: pedal, 12: screw holes, 13: fixed jaw, 20: fluted disc, 21: fluted disc bolt, 22: chain, 30: stop block, 31: stop bolt, 32: groove, 33: guide slope, 40: guide block, 41: guide block bolts, 42: and a guiding cambered surface.
Detailed Description
The invention is further described below in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Example 1
Referring to fig. 1 to 7, a first embodiment of the automatic bicycle drop chain guiding structure of the present invention is shown in fig. 1 to 5, and includes a crank 10, a toothed disc 20, a stopper 30 and a guide block 40. Wherein:
the outer side surface of one end of the crank 10 is coupled with a pedal 11.
The fluted disc 20 is combined and fixed on the inner side surface of the other end of the crank 10 by a plurality of fluted disc bolts 21, so that the fluted disc 20 can be driven to rotate by the crank 10, and a chain 22 is wound on the fluted disc 20.
The stopper 30 is screwed to the other end of the crank 10 by a plurality of stopper bolts 31, so that a groove 32 is formed between the stopper 30 and the toothed disc 20 on the peripheral surface of the other end of the crank 10, and the groove 32 is used for blocking the chain 22 on the other end of the crank 10 when falling down, so as to prevent the chain 22 from falling down to the outer side surface of the crank 10. The peripheral surface of the stopper 30 is formed with an inclined guiding slope 33 gradually decreasing from outside to inside, which further improves the blocking effect of the chain 22. In the present invention, the groove 32 may also be directly disposed on the peripheral surface of the stop block 30, which is a simple variation of the above structure, and will not be described in detail.
The guide block 40 is fastened to the inner side surface of the crank 10 by a plurality of guide block bolts 41, a gap for a chain piece of the chain 22 to pass through is maintained between the lower part of the guide block 40 and the toothed disc 20, the upper part is higher than the outer circumferential surface of the toothed disc 20, and the guide block 40 is provided with a guide cambered surface 42, the cambered surface of the guide cambered surface 42 gradually decreases from front to back, and when the guide block 40 is driven up to a height by the crank 10, the chain 22 is lifted to the upper side of the toothed disc 20 and then slides down along the guide cambered surface 42 to be clamped on the chain teeth of the toothed disc 20, so as to form a state of a top chain.
As shown in fig. 4 and 5, when the bicycle falls, the chain 22 is caught in the slot 32 formed between the stopper 30 and the toothed disc 20.
As shown in fig. 6 and 7, when the crank 10 rotates clockwise by continuously pressing the pedal 11 on the other side of the crank 10 during chain falling, the guide block 40 combined with the inner side of the crank 10 moves upward along with the rotation of the crank 10, and the chain 22 is lifted upward above the fluted disc 20, so that the chain 22 slides downward along the guide cambered surface 42 to be clamped on the teeth of the fluted disc 20, and an automatic chain-feeding state is formed.
The automatic chain-falling guiding structure for bicycle provided by the invention can firstly block the chain 22 by using the stop block 30 when chain-falling occurs, then continuously treading the pedal 11 to enable the guide block 40 to pull the chain 22 upwards above the fluted disc 20, so that the chain 22 slides downwards along the guide cambered surface 42 to automatically chain, the danger of collision and the like caused by sudden deceleration or stopping during chain-falling can be avoided, and the manual chain-falling is not needed, thereby greatly improving the riding convenience, particularly saving a great amount of chain-up time during competition and improving competition results.
Example 2
Referring to fig. 8, a second embodiment of the automatic bicycle drop chain guiding structure of the present invention is similar to embodiment 1, and the difference is that the crank 10 of the present embodiment is provided with a plurality of screw holes 12 at intervals, and a plurality of guide block bolts 41 can be selectively screwed, so that the guide blocks 40 can be combined with the toothed plates 20 of different sizes at appropriate positions corresponding to the crank 10.
Example 3
Referring to fig. 9, a third embodiment of the automatic bicycle drop chain guide structure of the present invention is substantially the same as embodiment 1, except that the stopper 30 and the guide block 40 of the present embodiment are integrally formed on the crank 10. Of course, in the present embodiment, only any one of the stop block 30 and the guide block 40 may be integrally formed on the crank 10, which will not be described in detail.
Example 4
Referring to fig. 10 and 11, a fourth embodiment of the automatic chain dropping guide structure for a bicycle according to the present invention is similar to embodiment 1, and the difference is that the other end of the crank 10 of the present embodiment is extended to form a plurality of fixing claws 13 for being combined with the toothed disc 20, the stopper 30 is in a C-shaped ring shape and is screwed on the plurality of fixing claws 13 by a plurality of stopper bolts 31, and the periphery of the stopper 30 protrudes out of the end surfaces of the plurality of fixing claws 13, so that a plurality of grooves 32 located on the end surfaces of the plurality of fixing claws 13 are formed between the stopper 30 and the toothed disc 20 for blocking the chain 22 on the plurality of fixing claws 13 at the other end of the crank 10 during chain dropping.
Example 5
Referring to fig. 12, a fifth embodiment of an automatic chain dropping guide structure for a bicycle according to the present invention is similar to embodiment 1, and the difference is that a plurality of fixing claws 13 extend from the other end of the crank 10 of the present embodiment to be combined with the toothed disc 20, a plurality of stoppers 30 are integrally provided at the ends of the plurality of fixing claws 13, respectively, and the ends of the plurality of stoppers 30 protrude from the end surfaces of the plurality of fixing claws 13, so that a plurality of grooves 32 are formed between the stoppers 30 and the toothed disc 20 on the end surfaces of the plurality of fixing claws 13 for retaining the chain 22 on the plurality of fixing claws 13 at the other end of the crank 10 during chain dropping.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An automatic chain guide structure for a bicycle, comprising:
the outer side surface of one end of the crank is combined with a pedal;
the fluted disc is combined and fixed on the inner side surface of the other end of the crank and can be driven to rotate by the crank, and a chain is wound on the fluted disc;
the stop block is arranged at the other end of the crank, so that a groove positioned on the peripheral surface of the other end of the crank is formed between the stop block and the fluted disc, and the groove can be used for blocking the chain on the other end of the crank when the chain falls off; and
the guide block is arranged on the inner side surface of the center of the crank, a gap for a chain piece on one side of the chain to pass through is maintained between the lower part of the guide block and the fluted disc, the upper part of the guide block is higher than the outer peripheral surface of the fluted disc and is provided with a guide cambered surface, when the guide block is driven to a proper height along with the crank upwards, the guide block lifts the chain to the upper side of the fluted disc, and then the chain slides downwards along the guide cambered surface to be clamped on the chain teeth of the fluted disc so as to form an automatic chain-feeding state;
the guide block is fixed on the crank by utilizing a plurality of guide block bolts; the crank is provided with a plurality of screw holes at intervals, and the screw holes can be used for the selective screwing of the bolts of the guide blocks, so that the guide blocks can be combined with fluted discs with different sizes at proper positions corresponding to the crank.
2. The automatic bicycle drop chain guide structure of claim 1, wherein the chainring is fixedly coupled to the crank by a plurality of chainring bolts.
3. The automatic chain guide structure of claim 1, wherein the stopper has a guide slope formed on its circumferential surface gradually decreasing from outside to inside, so as to further improve the chain blocking effect.
4. The automatic bicycle drop chain guide back structure of claim 1, wherein the stop is integrally formed on the crank.
5. A bicycle drop chain automatic return structure as in claim 1 or 4 wherein the guide block is integrally formed on the crank.
6. The automatic bicycle drop chain guide back structure of claim 1, wherein the stop is secured to the crank by a plurality of stop bolts.
7. The automatic chain falling guide structure of claim 6, wherein a plurality of fixing claws extend from the other end of the crank to be combined with the fluted disc, the stop block is in a C-shaped annular sheet shape and is fixed on the plurality of fixing claws by the plurality of stop block bolts, the periphery of the stop block protrudes out of the end faces of the plurality of fixing claws, and a plurality of grooves positioned on the end faces of the plurality of fixing claws are formed between the stop block and the fluted disc to be used for blocking the chain on the plurality of fixing claws at the other end of the crank during chain falling.
8. The automatic bicycle drop chain guide structure of claim 1, wherein the arcuate surface of the guide arcuate surface decreases gradually from front to back.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107114131A TWI641527B (en) | 2018-04-26 | 2018-04-26 | Bicycle drop chain automatic returning structure |
| TW107114131 | 2018-04-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108891523A CN108891523A (en) | 2018-11-27 |
| CN108891523B true CN108891523B (en) | 2024-04-16 |
Family
ID=64353479
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810904477.0A Active CN108891523B (en) | 2018-04-26 | 2018-08-09 | Automatic chain-falling guiding structure for bicycle |
| CN201821280859.2U Withdrawn - After Issue CN208731177U (en) | 2018-04-26 | 2018-08-09 | Automatic guiding structure for chain falling of bicycle |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821280859.2U Withdrawn - After Issue CN208731177U (en) | 2018-04-26 | 2018-08-09 | Automatic guiding structure for chain falling of bicycle |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN108891523B (en) |
| TW (1) | TWI641527B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI641527B (en) * | 2018-04-26 | 2018-11-21 | 大陸商浩盟車料（上海）有限公司 | Bicycle drop chain automatic returning structure |
| CN113978601B (en) * | 2021-11-15 | 2023-09-26 | 昆山德钜源运动科技有限公司 | Automatic chain-feeding mechanism for bicycle |
Citations (11)
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| US4832667A (en) * | 1987-08-06 | 1989-05-23 | Wren Nicholas D | Front chain wheel chain guide |
| US5002520A (en) * | 1989-12-14 | 1991-03-26 | Greenlaw John W | Bicycle drive chain guide |
| JPH09315373A (en) * | 1996-05-28 | 1997-12-09 | Tadashi Eguchi | Automatic speed change gear for bicycle |
| JP2002264881A (en) * | 2001-03-05 | 2002-09-18 | Minoru Tomita | Power-assisted bicycle kit |
| JP2008114626A (en) * | 2006-11-01 | 2008-05-22 | Takeshi Gouto | Falling chain mounting implement |
| CN101857064A (en) * | 2009-04-08 | 2010-10-13 | 捷安特电动车（昆山）有限公司 | Chain anti-locking device for electric motor vehicle and bicycle |
| CN202130551U (en) * | 2011-05-24 | 2012-02-01 | 菲利浦·方皓德 | Adjustable bicycle chain-drop prevention device |
| CN202400247U (en) * | 2011-11-17 | 2012-08-29 | 中国矿业大学 | Quick chain assembly chain wheel mechanism for bicycle |
| KR20140013974A (en) * | 2012-07-24 | 2014-02-05 | 박민철 | Automatic change gear structure of a bicycle |
| CN205311822U (en) * | 2015-12-23 | 2016-06-15 | 浩盟车料（上海）有限公司 | Novel accurate variable speed chain wheel of cochain nail |
| CN208731177U (en) * | 2018-04-26 | 2019-04-12 | 浩盟车料（上海）有限公司 | Automatic guiding structure for chain falling of bicycle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM255846U (en) * | 2004-04-28 | 2005-01-21 | Yicheng Sports Co Ltd | Structure chain derailing prevention structure for non-derailleured bicycle |
| CN2823104Y (en) * | 2005-07-27 | 2006-10-04 | 何贺 | Chain wheel of bicycle with function of preventing chain from falling off |
| US20080032835A1 (en) * | 2006-08-04 | 2008-02-07 | Reynolds Mark A | Multiple Sprocket Chain Guide For Front Bicycle Derailleur |
| TWM393472U (en) * | 2010-06-22 | 2010-12-01 | Chang-Hui Lin | Gear-falloff prevention structure |
| DE202011001149U1 (en) * | 2011-01-04 | 2012-04-13 | Canyon Bicycles Gmbh | Holding device for bicycle chains |
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2018
- 2018-04-26 TW TW107114131A patent/TWI641527B/en active
- 2018-08-09 CN CN201810904477.0A patent/CN108891523B/en active Active
- 2018-08-09 CN CN201821280859.2U patent/CN208731177U/en not_active Withdrawn - After Issue
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| US4832667A (en) * | 1987-08-06 | 1989-05-23 | Wren Nicholas D | Front chain wheel chain guide |
| US5002520A (en) * | 1989-12-14 | 1991-03-26 | Greenlaw John W | Bicycle drive chain guide |
| JPH09315373A (en) * | 1996-05-28 | 1997-12-09 | Tadashi Eguchi | Automatic speed change gear for bicycle |
| JP2002264881A (en) * | 2001-03-05 | 2002-09-18 | Minoru Tomita | Power-assisted bicycle kit |
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| KR20140013974A (en) * | 2012-07-24 | 2014-02-05 | 박민철 | Automatic change gear structure of a bicycle |
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| 张建中.机械设计基础.高等教育出版社,2007,(第1版),第46-47页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108891523A (en) | 2018-11-27 |
| TWI641527B (en) | 2018-11-21 |
| TW201945241A (en) | 2019-12-01 |
| CN208731177U (en) | 2019-04-12 |
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