CN104058059B - Novel bicycle chain wheel structure - Google Patents
Novel bicycle chain wheel structure Download PDFInfo
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- CN104058059B CN104058059B CN201310092887.7A CN201310092887A CN104058059B CN 104058059 B CN104058059 B CN 104058059B CN 201310092887 A CN201310092887 A CN 201310092887A CN 104058059 B CN104058059 B CN 104058059B
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- crank arm
- axle
- bearing device
- cup
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Abstract
The invention discloses a novel bicycle chain wheel structure and relates to the field of bicycles. The novel bicycle chain wheel structure comprises a first crank arm, a second crank arm, a shaft, a first cup-shaped object, a second cup-shaped object, a first bearing device, a second bearing device, a first cushion ring and a second cushion ring. According to the novel bicycle chain wheel structure, novel crank locking structure and bearing mounting structure are adopted, and the bearing devices are arranged in a crank, so that the transverse size of a chain wheel is reduced; a novel stress structure is adopted, and the shaft part is not in contact with bearings, so that the bending moment on the shaft part is relatively small, the deformation is reduced, and the integral rigidity of the chain wheel structure is improved.
Description
Technical field：
The present invention relates to bicycle art is and in particular to a kind of new bicycle chain sprocket structure.
Background technology：
Becoming a kind of entertainment form and the means of transportation of increased popularity by bike.And, become by bike
For one kind in amateur and professional athlete all popular athletic sports.No matter bicycle use in amusement,
Transport or race, bicycle industry all updating the various assemblies of bicycle so that bicycle be easier to assembling and
Cheap.
A specific part through a large amount of bicycles redesigning is exactly the front sprocket wheel of bicycle in the past few years
Structure.The front sprocket wheel of bicycle is by, on axis installation and cycle frame Five-way tube, the crank arm axle of axis is with respect to voluntarily
Vehicle carriage Five-way tube rotates.Each end of crank arm axle is respectively provided with fixed thereto and turns with respect to cycle frame Five-way tube
The crank arm of dynamic crank arm axle.Crank arm stretches out in opposite direction from axis, and has and be connected to their free end
The upper pedal for supporting cyclist foot.Front gear piece is frequently connected to rotate together in order to it on right crank arm.Cyclist
The rotation of caused pedal causes sprocket wheel to rotate, and this makes bicycle chain motion again so that rear sprocket wheel rotates, and then
Make the rear wheel of bicycle.
All the time, bicycle chain wheel structure is by built-in to main shaft portion and bearing arrangement and cycle frame Five-way tube
Interior.And after the chain sprocket structure of bearing external in recent years emerges, the main shaft portion being adopted because of it and the chi of bearing arrangement
Very little all bigger than traditional bearing built-in chain sprocket structure, therefore its overall structure is firmer, more light weight, thus a large amount of popularizes.
After a large amount of popularization of chain sprocket structure of bearing external, his some drawbacks have also manifested out.Outside bearing
Put the chain sprocket structure of formula as the term suggests so that the horizontal chi of front sprocket wheel axle portion outside being the Five-way tube that bearing arrangement is placed in vehicle frame
Very little increase, the distance between pedal installed surface of left crank arm and right crank arm also increases therewith, thus leading to cycle when some
People when trampling, because of both feet between distance excessive, cause joint wear and tear down muscle tissue.Also result in as some cyclists
When trampling, inside ankle or shoes inner side easily and grazing outside the crank of sprocket wheel.
In the chain sprocket structure of known bicycle art, the shaft portion of chain sprocket structure bears torsional moment and bending simultaneously
Moment, therefore shaft portion produce deformation in the presence of this two moments.
Content of the invention：
It is an object of the invention to provide a kind of new bicycle chain sprocket structure, it employ new-type crank locking mechanism and
Bearing mounting structure, bearing arrangement is built among crank, reduces the lateral dimension of sprocket wheel；Employ new-type stress knot
Structure, shaft portion not with bearing touch, the bending moment that therefore shaft portion is born is less, thus decreasing deformation, and then is lifted
The integral rigidity of chain sprocket structure.
In order to solve the problems of background technology, the present invention is to employ the following technical solutions：It includes the first crank
Arm 1, the second crank arm 2, axle 3, the first cup 4, the second cup 5, clutch shaft bearing device 6, second bearing device 7, first
Gasket ring 8 and the second gasket ring 9, the first crank arm 1 is provided with the annular indent base for installing and accommodating clutch shaft bearing device 6
1-1, clutch shaft bearing device 6 is arranged in annular indent base 1-1, takes up with first axle in the inwall of annular indent base 1-1
It is provided with the first gasket ring 8, axle 3 passes through Five-way tube 10 and around the rotation of Five-way tube 10 axis, one end of axle 3 between the outer wall putting 6
It is arranged in the annular indent base 1-1 on the first crank arm 1, the other end side of axle 3 is provided with several internal thread hole 3-1,
The position of the internal thread hole 3-1 in respective shaft 3 on the second crank arm 2 is provided with several first through holes 2-1, and the other end of axle 3 leads to
Cross fixing bolt to be fixedly connected with the second crank arm 2, the side of Five-way tube 10 is provided with the first cup 4, Five-way tube 10 another
Side is provided with the second cup 5, and one end of the first cup 4 is fitted close with the inwall of clutch shaft bearing device 6, the first cup-shaped
The other end of thing 4 is fitted close with one end inwall of Five-way tube 10, in one end of the second cup 5 and the other end of Five-way tube 10
Wall is fitted close, and the other end of the second cup 5 is fitted close with the inwall of second bearing device 7, and second bearing device 7 is arranged
On the second crank arm 2, the second gasket ring 9 is arranged between second bearing device 7 and the second crank arm 2.
The inner side of the first described crank arm 1 is provided with two radially distributed internal thread hole 1-2, the first crank arm 1
The surrounding distribution of upper annular indent base 1-1 is provided with several support 1-3, each support 1-3 is provided with two and radially divides
Second through hole 1-4 of cloth.
One end annulus outer surface of described axle 3 is provided with several spline 3-2, and axle 3 one end annulus outer surface also
It is provided with several hole 3-3, the described annular indent base 1-1 inner ring of the first crank arm 1 is provided with several and spline 3-2 pair
The annular indent base of the keyway 1-5 answering and screwed hole 1-6 corresponding with hole 3-3, one end annulus of axle 3 and the first crank arm 1
1-1 is socketed, and axle 3 is fixedly connected with the first crank arm 1 by spline 3-2 clamping corresponding with keyway 1-5 by bolt.
In the present invention can by adjusting the first gasket ring 8, the second gasket ring 9 adjust the first crank arm 1 and the second crank arm 2 it
Between horizontal spacing, thus preferably adapting to there is the crowd of different demands to trampling width；The structure of this sprocket crank arm is permissible
The internal diameter of diameter closely bicycle five-pipe 10 allowing axle 3 that is to say, that the diameter of axle 3 is bigger, the therefore intensity of axle 3
Can higher it is also possible to substitute main flow with new materials such as more light-weighted aluminium alloy, titanium alloy or carbon fibers
Steel, thus reach the lifting declining and bringing intensity of sprocket wheel total quality simultaneously；Using clutch shaft bearing device 6, second
The size of bearing arrangement 7 is all bigger than the chain sprocket structure of bicycle art known to existing major part, thus improving chain
The rotation smooth degree of wheel construction, integral rigidity and life-span.
The present invention can be directed to the cup that the bicycle five-pipe collocation of different size is adapted, such that it is able to make sprocket wheel pacify
On the bicycle five-pipe of dress and plurality of specifications, improve the installation compatibility of sprocket wheel, simplify bicycle chain wheel structure, from
And the number of parts decreasing, reduce manufacturing cost, bulk strength is higher, overall weight is lighter, trample more comfortable.
Brief description：
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the attachment structure schematic diagram of the first crank arm and axle.
Specific embodiment：
Referring to Fig. 1, this specific embodiment employs the following technical solutions：It include the first crank arm 1, the second crank arm 2,
Axle 3, the first cup 4, the second cup 5, clutch shaft bearing device 6, second bearing device 7, the first gasket ring 8 and the second gasket ring 9,
Annular indent base 1-1 for installing and accommodating clutch shaft bearing device 6, clutch shaft bearing device 6 are provided with the first crank arm 1
It is arranged in annular indent base 1-1, arrange between the inwall and the outer wall of clutch shaft bearing device 6 of annular indent base 1-1
There is the first gasket ring 8, axle 3 passes through Five-way tube 10 and around the rotation of Five-way tube 10 axis, one end of axle 3 is arranged on the first crank arm 1
On annular indent base 1-1 in, the other end side of axle 3 is provided with several internal thread hole 3-1, corresponding on the second crank arm 2
The position of the internal thread hole 3-1 on axle 3 is provided with several first through holes 2-1, and the other end of axle 3 passes through fixing bolt and the second song
Shaft arm 2 is fixedly connected, and the side of Five-way tube 10 is provided with the first cup 4, and the opposite side of Five-way tube 10 is provided with the second cup-shaped
Thing 5, one end of the first cup 4 is fitted close with the inwall of clutch shaft bearing device 6, and the other end of the first cup 4 and five leads to
One end inwall of pipe 10 is fitted close, and one end of the second cup 5 is fitted close with the other end inwall of Five-way tube 10, second glass
The other end of shape thing 5 is fitted close with the inwall of second bearing device 7, and second bearing device 7 is arranged on the second crank arm 2,
Second gasket ring 9 is arranged between second bearing device 7 and the second crank arm 2.
The inner side of the first described crank arm 1 is provided with two radially distributed internal thread hole 1-2, the first crank arm 1
The surrounding distribution of upper annular indent base 1-1 is provided with several support 1-3, each support 1-3 is provided with two and radially divides
Second through hole 1-4 of cloth.
One end annulus outer surface of described axle 3 is provided with several spline 3-2, and axle 3 one end annulus outer surface also
It is provided with several hole 3-3, the described annular indent base 1-1 inner ring of the first crank arm 1 is provided with several and spline 3-2 pair
The annular indent base of the keyway 1-5 answering and screwed hole 1-6 corresponding with hole 3-3, one end annulus of axle 3 and the first crank arm 1
1-1 is socketed, and axle 3 is fixedly connected with the first crank arm 1 by spline 3-2 clamping corresponding with keyway 1-5 by bolt.
Can be by adjusting the first gasket ring 8, the second gasket ring 9 adjustment the first crank arm 1 and second in this specific embodiment
Horizontal spacing between crank arm 2, thus preferably adapt to there is the crowd of different demands to trampling width；This sprocket crank arm
Structure, the internal diameter that can allow the diameter of axle 3 closely bicycle five-pipe 10 is that is to say, that the diameter of axle 3 is bigger, therefore
The intensity of axle 3 can higher it is also possible to be replaced with new materials such as more light-weighted aluminium alloy, titanium alloy or carbon fibers
For the steel of main flow, thus reach the lifting declining and bringing intensity of sprocket wheel total quality simultaneously；Using first axle take up
The size putting 6, second bearing device 7 is all bigger than the chain sprocket structure of bicycle art known to existing major part, thus
Improve rotation smooth degree, integral rigidity and the life-span of chain sprocket structure.
This specific embodiment can be directed to the cup that the bicycle five-pipe collocation of different size is adapted, such that it is able to
So that sprocket wheel is installed on the bicycle five-pipe with plurality of specifications, improve the installation compatibility of sprocket wheel, simplify bicycle chain
Wheel construction, thus the number of parts decreasing, reduces manufacturing cost, bulk strength is higher, and overall weight is lighter, tramples more easypro
Suitable.
Claims (2)
1. a kind of new bicycle chain sprocket structure is it is characterised in that it includes the first crank arm (1), the second crank arm (2), axle
(3), the first cup (4), the second cup (5), clutch shaft bearing device (6), second bearing device (7), the first gasket ring (8) and
Second gasket ring (9), the first crank arm (1) is provided with for installing and accommodating concave bottom in the annular of clutch shaft bearing device (6)
Seat (1-1), clutch shaft bearing device (6) is arranged in annular indent base (1-1), in the inwall of annular indent base (1-1)
It is provided with the first gasket ring (8) and the outer wall of clutch shaft bearing device (6) between, axle (3) passes through Five-way tube (10) and leads to around five
Pipe (10) axis rotation, one end of axle (3) is arranged on the annular indent base (1-1) on the first crank arm (1) Nei, axle
(3) other end side is provided with several internal thread holes (3-1), the female thread in the upper respective shaft (3) of the second crank arm (2)
The position in hole (3-1) is provided with several first through holes (2-1), and the other end of axle (3) passes through fixing bolt and the second crank arm
(2) it is fixedly connected, the side of Five-way tube (10) is provided with the first cup (4), and the opposite side of Five-way tube (10) is provided with
Two cups (5), one end of the first cup (4) is fitted close with the inwall of clutch shaft bearing device (6), the first cup
(4) the other end and one end inwall tight fit, one end of the second cup (5) and the Five-way tube (10) of Five-way tube (10)
Other end inwall be fitted close, the inwall of the other end of the second cup (5) and second bearing device (7) is fitted close,
Second bearing device (7) is arranged on the second crank arm (2), and the second gasket ring (9) is arranged on second bearing device (7) and the
Between two crank arms (2)；One end annulus outer surface of described axle (3) is provided with several splines (3-2), and in axle (3)
One end annulus outer surface is additionally provided with several holes (3-3), in the described annular indent base (1-1) of the first crank arm (1)
Several keyways (1-5) corresponding with spline (3-2) and screwed hole (1-6) corresponding with hole (3-3), axle (3) are provided with circle
One end annulus and the first crank arm (1) the socket of annular indent base (1-1), spline (3-2) is corresponding with keyway (1-5)
Axle (3) is fixedly connected with the first crank arm (1) by clamping by bolt.
2. a kind of new bicycle chain sprocket structure according to claim 1 is it is characterised in that described the first crank arm
(1) inner side is provided with two radially distributed internal thread holes (1-2), the first crank arm (1) upper annular indent base (1-
1) surrounding is distributed with several supports (1-3), and each support (1-3) is provided with two the second radially distributed through holes
(1-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310092887.7A CN104058059B (en) | 2013-03-22 | 2013-03-22 | Novel bicycle chain wheel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310092887.7A CN104058059B (en) | 2013-03-22 | 2013-03-22 | Novel bicycle chain wheel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104058059A CN104058059A (en) | 2014-09-24 |
| CN104058059B true CN104058059B (en) | 2017-02-08 |
Family
ID=51546060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310092887.7A Active CN104058059B (en) | 2013-03-22 | 2013-03-22 | Novel bicycle chain wheel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104058059B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3441540A1 (en) * | 1984-11-14 | 1986-05-22 | Thun, Alfred Heinrich, 5828 Ennepetal | CRANKSHAFT BEARING FOR BICYCLES |
| CN2121361U (en) * | 1992-05-13 | 1992-11-11 | 谢钦河 | Bicycle free wheel base hub extension design |
| JPH08258779A (en) * | 1995-03-27 | 1996-10-08 | Bridgestone Cycle Co | Hunger for bicycle |
| US5762426A (en) * | 1997-07-02 | 1998-06-09 | Lin; Wen-Hwa | Bottom bracket ball bearing axle mounting structure for a bicycle |
| US20080238028A1 (en) * | 2007-03-29 | 2008-10-02 | Shimano Inc. | Bicycle bottom bracket hanger |
| CN202098522U (en) * | 2011-03-22 | 2012-01-04 | 大行科技(深圳)有限公司 | Quickly-detached crank set |
| CN203358794U (en) * | 2013-03-22 | 2013-12-25 | 俞孝爱 | Novel bicycle chain wheel structure |
-
2013
- 2013-03-22 CN CN201310092887.7A patent/CN104058059B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104058059A (en) | 2014-09-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |