CN216185787U - Bicycle capable of changing speed by reverse pedaling - Google Patents
Bicycle capable of changing speed by reverse pedaling Download PDFInfo
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- CN216185787U CN216185787U CN202122441565.1U CN202122441565U CN216185787U CN 216185787 U CN216185787 U CN 216185787U CN 202122441565 U CN202122441565 U CN 202122441565U CN 216185787 U CN216185787 U CN 216185787U
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Abstract
The utility model relates to the technical field of bicycles, in particular to a bicycle capable of changing speed by reverse pedaling, which comprises a frame, and a saddle, a handlebar, a front wheel, a rear wheel and a pedal which are respectively connected with the frame, wherein the frame is provided with a first driving mechanism and a second driving mechanism, the second driving mechanism and the first driving mechanism are respectively arranged at two sides or the same side of the frame, the first driving mechanism and the second driving mechanism respectively comprise a chain wheel and a flywheel which are connected through a chain, and the second driving mechanism also comprises an idler wheel component; the number of teeth of the second chain wheel is less than that of the first chain wheel and/or the number of teeth of the second flywheel is more than that of the first flywheel, forward pedaling of the bicycle is achieved through the first driving mechanism, backward pedaling of the bicycle is achieved through the second driving mechanism, and due to the fact that the number of teeth of the first chain wheel is less than that of the second chain wheel and/or the number of teeth of the first flywheel is more than that of the second flywheel, the purpose of forward pedaling at a high speed and backward pedaling at a low speed is achieved.
Description
Technical Field
The utility model relates to the technical field of bicycles, in particular to a bicycle capable of changing speed by back stepping.
Background
The existing bicycle generally only has a flywheel and a chain wheel, and under the action of a connecting chain, when the bicycle is treaded forwards, the bicycle moves forwards, but when the bicycle is treaded backwards, the flywheel can idle, and the bicycle cannot move forwards.
Secondly, the existing speed-changing bicycle is generally provided with a plurality of gear sets combined by gears with different sizes, when the speed-changing purpose is needed, the speed is adjusted by a hand speed-adjusting finger-dialing device, so that the connecting chain is adjusted to different gears to realize the speed-changing effect, and the traditional speed-changing method has a complex structure and high production cost.
Therefore, a bicycle which has a simple structure and can move forward by forward stepping and reverse stepping at variable speed is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: in order to solve the problems in the prior art, the utility model provides a bicycle capable of changing speed by pedaling reversely.
In order to solve the problems in the prior art, the utility model adopts the following technical scheme:
a bicycle capable of changing speed in a reverse stepping mode comprises a frame, and a saddle, a handlebar, a front wheel, a rear wheel, a left pedal and a right pedal which are connected with the frame respectively, wherein a first driving mechanism is arranged on the frame and comprises a first chain wheel and a first flywheel which are connected through a first chain, a second driving mechanism is further arranged on the frame, and the second driving mechanism and the first driving mechanism are arranged on two sides of the frame respectively or the second driving mechanism and the first driving mechanism are arranged on the same side of the frame;
the second driving mechanism comprises a second chain wheel, a second flywheel and an idler wheel assembly which are connected through a second chain, and the idler wheel assembly comprises at least one idler wheel;
the number of teeth of the second chain wheel is less than that of the first chain wheel and/or the number of teeth of the second flywheel is more than that of the first flywheel.
As an improvement of the technical proposal of the bicycle with the variable speed by back stepping, the idler wheel component comprises a fixed plate and two idler wheels, wherein the two idler wheels comprise a fixed idler wheel and a swinging idler wheel;
the fixing plate is fixed on the frame and is fixed at a position close to a middle shaft of the frame or a rear shaft of the frame;
the fixed idler wheel and the swinging idler wheel are connected with the second flywheel and the second chain wheel through the second chain, and the horizontal height of the swinging idler wheel is higher than that of the second flywheel.
As an improvement of the technical scheme of the bicycle with the variable speed by back stepping, the idler wheel assembly comprises a fixed plate and a swinging plate, wherein an opening or a pipe clamp for fixing on the frame is arranged on the side edge of one end of the fixed plate, and a fixed column is arranged on the other end of the fixed plate and is connected with the swinging plate;
one end of the swinging piece is provided with a through hole, the fixed column penetrates through the through hole, the fixed idler is arranged on the fixed column, the other end of the swinging piece is provided with the swinging idler, and the swinging idler swings with the fixed column as the center.
As an improvement of the technical scheme of the bicycle capable of changing speed by pedaling reversely, a fixing hole is arranged on one side of the opening, and the fixing piece is fixed on the rear shaft of the bicycle frame through the opening.
As an improvement of the technical scheme of the bicycle with the variable speed by reverse stepping, a torsion spring for elastically tensioning the second chain passing through the swinging idle wheel is arranged on the fixed column.
As an improvement of the technical solution of the bicycle with a reversible speed change, when the idler wheel assembly is fixed at the rear axle of the frame, the second chain sequentially passes through the outer side of the second chain wheel, the outer side of the idler wheel assembly and the upper side of the second flywheel.
As an improvement of the technical scheme of the bicycle with the reverse stepping speed change function, the idler wheel assembly comprises a fixing plate and a first idler wheel, and the horizontal height of the first idler wheel is higher than that of the second flywheel.
As an improvement of the technical solution of the bicycle with a reversible speed change according to the present invention, the second crankset and the second flywheel are correspondingly disposed on the inner sides of the first crankset and the first flywheel.
As an improvement of the technical scheme of the bicycle with the variable speed by pedaling reversely, the first flywheel and the second flywheel are integrally arranged, and the second flywheel can rotate relative to the first flywheel; the first chain wheel and the second chain wheel are integrally arranged.
The utility model has the beneficial effects that:
in the utility model, forward movement of a forward-treading driven bicycle is realized by the first driving mechanism, forward movement of a backward-treading driven bicycle is realized by the second driving mechanism, meanwhile, the forward-treading high speed and backward-treading low speed are realized as the number of teeth of the first chain wheel is less than that of the second chain wheel and/or the number of teeth of the first flywheel is more than that of the second flywheel, and the conversion between the forward treading mode and the backward treading mode can be realized only by switching the forward treading mode and the backward treading mode when the bicycle is treaded, so that the speed change purpose is realized, and the problems in the prior art are solved.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic view of the combination of the first and second driving mechanisms of the present invention;
FIG. 3 is a schematic structural diagram of a first driving mechanism according to the present invention;
FIG. 4 is a schematic structural diagram of a second driving mechanism according to the present invention;
FIG. 5 is a schematic view of a first state of the idler assembly of the present invention;
FIG. 6 is a schematic diagram of a second state of the idler assembly of the present invention;
fig. 7 is a schematic structural view of a first flywheel and a second flywheel according to a first embodiment of the present invention.
Description of reference numerals: 1-a vehicle frame; 2-a saddle seat; 3-a handlebar; 4-front wheels; 5-rear wheel; 6-a first drive mechanism; 7-a second drive mechanism; 8-a first chain; 9-a first chain wheel; 10-a first flywheel; 11-a second chain; 12-a second crankset; 13-a second flywheel; 14-an idler assembly; 15-fixed idler wheel; 16-a swing idler; 17-a fixing sheet; 18-a wobble plate; 19-fixing columns; 20-opening.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of embodiments of the present invention, and not all embodiments.
The forward stepping in the application refers to the action of forward stepping on the bicycle to enable the bicycle to move forward, namely the forward stepping is in a traditional stepping mode, the speed is high, and the bicycle can be suitable for riding on flat ground; the reverse stepping in the application refers to the backward stepping of the bicycle, so that the bicycle moves forwards, namely the reverse stepping is a non-traditional stepping mode, the speed of the reverse stepping is low, and the reverse stepping is suitable for climbing or starting the bicycle.
As shown in fig. 1 to 7, a bicycle capable of changing speed by reverse pedaling comprises a frame 1, and a saddle 2, a handlebar 3, a front wheel 4, a rear wheel 5, a left pedal and a right pedal which are respectively connected with the frame 1, wherein a first driving mechanism 6 and a second driving mechanism 7 are arranged on the frame 1, the first driving mechanism 6 and the second driving mechanism 7 are both arranged on the same side of the frame 1, or the first driving mechanism 6 and the second driving mechanism 7 are respectively arranged on two sides of the frame 1. The first driving mechanism 6 comprises a first flywheel 10 and a first chain wheel 9 which are connected through a first chain 8, the second driving mechanism 7 comprises a second flywheel 13, a second chain wheel 12 and an idler wheel assembly 14 which are connected through a second chain 11, the idler wheel assembly 14 comprises at least one idler wheel, and the number of teeth of the second chain wheel 12 is less than that of the first chain wheel 9 and/or the number of teeth of the second flywheel 13 is more than that of the first flywheel 10.
When the bicycle is used, the bicycle is alternately positively stepped by the left pedal and the right pedal, and moves forwards; the bicycle is alternately treaded reversely by the left pedal and the right pedal, the bicycle moves forwards, and the tooth number of the second chain wheel 12 is less than that of the first chain wheel 9 and/or the tooth number of the second flywheel 13 is more than that of the first flywheel 10, so that the slow-speed reverse treading effect is realized, and further, the speed change effect can be realized only by switching the treading direction of the bicycle.
In detail, the bicycle with variable speed in the prior art achieves the purpose of variable speed by adjusting the connection of the connecting chain and the gears with different sizes, and the existing bicycle, no matter the bicycle with variable speed or the bicycle with single speed, can only be positively stepped, namely the bicycle in the prior art is a positively stepped bicycle, and when being positively stepped, people alternately and forwardly step on the left pedal and the right pedal, so that the purpose of forward movement of the bicycle is achieved.
On the basis of the structure of the existing single-speed bicycle, under the action of the original connecting chain, the right chain wheel and the right flywheel, the bicycle is driven to move forwards when a left pedal and a right pedal are alternately treaded forwards, namely, the bicycle is driven to move forwards by a first driving mechanism 6 and moves forwards by reverse treading under the action of an idler wheel component 14 in a second driving mechanism 7; meanwhile, the number of teeth of the second chain wheel 12 is less than that of the first chain wheel 9 and/or the number of teeth of the second flywheel 13 is more than that of the first flywheel 10, so that the purpose of forward movement of a backward pedaling bicycle at a low speed and forward movement of a forward pedaling bicycle at a high speed is achieved when the backward pedaling bicycle is used.
More specifically, the reversible speed-change bicycle of the present invention includes two forward pedaling modes and reverse pedaling modes, and in the forward pedaling mode, the first driving mechanism 6 and the second driving mechanism 7 are disposed on the same side of the frame 1 as a first embodiment of the present invention, and in the present application, the right side is taken as an example for explanation. As shown in fig. 1 to 4 and 7, since the right side of the frame 1 is provided with the first flywheel 10 and the first chain wheel 9 connected by the first chain 8, the user can alternately and positively step on the left pedal and the right pedal to drive the right crank to rotate, so as to drive the first chain wheel 9 to rotate, and finally, the user can drive the rear wheel 5 to rotate by the first chain 8 and the first flywheel 10, so as to provide power for the bicycle, complete the transmission of the bicycle, and achieve the purpose of forward movement of the positively stepped bicycle.
Preferably, the second crankset 12 and the second flywheel 13 are correspondingly arranged on the inner sides of the first crankset 9 and the first flywheel 10, so that the whole structure is more compact and beautiful. More preferably, the first flywheel 10 and the second flywheel 13 are integrally arranged, and the second flywheel 13 can rotate relative to the first flywheel 10; the first chain wheel 9 and the second chain wheel 12 are integrally provided.
In the present embodiment, since the second crankset 12 and the second flywheel 13 are correspondingly disposed on the inner sides of the first crankset 9 and the first flywheel 10, that is, the first crankset 9 is stacked on the second crankset 12, and the first flywheel 10 is stacked on the second flywheel 13, when the first driving mechanism 6 and the second driving mechanism 7 are in the operating state, the first chain 8 and the second chain 11 can be prevented from being entangled with each other.
In the reverse pedaling mode, since the second driving mechanism 7 is further arranged on the frame 1, the first chain wheel 9 is reversely rotated when the left pedal and the right pedal are alternatively reversely pedaled under the action of the idle wheel assembly 14 in the second driving mechanism 7, and in this case, the bicycle can also be driven to advance. When a user alternately steps on the left pedal and the right pedal reversely, the right crank is driven to rotate, so that the second chain wheel 12 is driven to rotate, the rear wheel 5 is driven to rotate through the idler wheel assembly 14, the second chain 11 and the second flywheel 13, power is provided for the bicycle, transmission of the bicycle is completed, and the purpose of forward movement of the reversely-stepped bicycle is achieved. Meanwhile, the number of teeth of the second chain wheel 12 is less than that of the first chain wheel 9 and/or the number of teeth of the second flywheel 13 is more than that of the first flywheel 10, so that the purpose of low-speed forward of the bicycle is achieved when the bicycle is reversely stepped.
As a second embodiment of the utility model, a first drive mechanism 6 and a second drive mechanism 7 are placed on both sides of the frame 1, respectively. In the first and second embodiments, since the first and second driving mechanisms 6 and 7 are disposed on the same side of the bicycle frame 1, the overall structure of the bicycle can be more compact and more beautiful, and since the crankset and the flywheel of the conventional bicycle are disposed on one side of the bicycle frame 1, the first embodiment can be more rapidly improved and the production cost can be reduced, so that the first embodiment is preferable in the above two embodiments of the present invention.
It should be noted that, since the second chain wheel 12 and the second flywheel 13 need to be matched with the second chain 11, the pitch between the teeth on the second chain wheel 12 and the second flywheel 13 is the same, that is, if the size of the second chain wheel 12 is larger than that of the first chain wheel 9, the number of teeth on the second chain wheel 12 is larger than that of the first chain wheel 9. In the utility model, the backward treading bicycle advances at a low speed, and the forward treading bicycle advances at a high speed, wherein the low speed and the high speed realize the speed of bicycle movement based on a treading mode. Like this, the bicycle alright realized to step on the bicycle backward and advance at low speed, just step on the bicycle effect of advancing at a high speed, can realize changing the effect of bicycle speed of motion through switching the mode of just stepping on and stepping on backward, can be applicable to specific environment, like the use under the environment such as climbing.
In the present invention, the idler assembly 14 includes at least one idler, and preferably two idlers. When the idler assembly 14 comprises an idler, the idler assembly 14 comprises a fixing plate 17 and a first idler having a level higher than that of the second flywheel 13 to prevent the second chain 11 from being wound in the second driving mechanism 7.
When the idler assembly 14 includes two idlers, as shown in fig. 5 and 6, the idler assembly 14 includes a fixed plate 17 and two idlers including a fixed idler 15 and a swing idler 16; the fixing plate 17 is fixed on the frame 1, and the fixing plate 17 is fixed at a position near the center axis of the frame 1 or the rear axis of the frame 1. As an embodiment of the second driving mechanism of the present invention, when the idle pulley assembly 14 is fixed at the rear axle of the frame 1, the second chain 11 sequentially passes through the outer side of the second chain wheel 12, the outer side of the idle pulley assembly 14 and the upper side of the second flywheel 13, and when the bicycle is pedaled in reverse, the purpose of driving the bicycle to move forward in reverse is achieved under the action of the idle pulley assembly 14.
The fixed idler wheel 15 and the swinging idler wheel 16 are connected with the second flywheel 13 and the second chain wheel 12 through the second chain 11, and the level of the swinging idler wheel 16 is higher than that of the second flywheel 13, so that the second chain 11 is prevented from winding in the second driving mechanism 7.
Further, the idler assembly 14 comprises a fixing plate 17 and two idler wheels, wherein the two idler wheels comprise a fixed idler wheel 15 and a swinging idler wheel 16; the fixing sheet 17 is fixed on the frame 1, and the fixing sheet 17 is fixed at a position close to a middle shaft of the frame 1 or a rear shaft of the frame 1; the fixed idler 15 and the swing idler 16 are connected with the second flywheel 13 and the second chain wheel 12 through the second chain 11.
Furthermore, the idler wheel assembly 14 comprises the fixing plate 17 and the swinging plate 18, an opening 20 or a pipe clamp for fixing on the frame 1 is arranged on one side edge of one end of the fixing plate 17, a fixing column 19 is arranged on the other end of the fixing plate, and the fixing column 19 is connected with the swinging plate 18; a through hole is formed in one end of the swinging piece 18, the fixed column 19 penetrates through the through hole, a fixed idler wheel 15 is arranged on the fixed column 19, a swinging idler wheel 16 is arranged at the other end of the swinging piece 18, and the swinging idler wheel 16 swings around the fixed column 19. A fixing hole is provided on one side of the opening 20, and the fixing piece 17 is fixed on the rear axle of the frame 1 through the opening 20.
The fixed column 19 is provided with a torsion spring for elastically tensioning the second chain 11 passing through the swinging idle wheel 16, one end of the fixed piece 17 is connected with the swinging piece 18 through the torsion spring, so that the elastic force can be provided for the swinging idle wheel 16, and then the fixed piece is used for tensioning the second chain 11, and the purpose of adjusting the tightness of the second chain 11 through the swinging of the swinging piece 18 is achieved. The other end of the fixing plate 17 is provided with an opening 20 or a pipe clamp for fixing to the frame 1.
As a first fixing mode of the idler wheel assembly 14, the other end of the fixing plate 17 is provided with an opening 20 and a fixing hole, when in use, the opening 20 is clamped on the rear axle, a screw is screwed into the fixing hole, and the fixing plate 17 is fixed on the rear axle under the combined action of the screw and the rear axle, namely, the idler wheel assembly 14 is fixed at the rear axle of the frame 1.
As a second fixing mode of the idler pulley assembly 14, a pipe clamp is arranged at the other end of the fixing plate 17, and the idler pulley assembly 14 can be installed on the frame 1 beside the first chain wheel 9 through the pipe clamp so as to fix the idler pulley assembly 14 on the frame 1.
All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Claims (9)
1. A bicycle capable of changing speed by reversely stepping comprises a frame, and a saddle, a handlebar, a front wheel, a rear wheel, a left pedal and a right pedal which are respectively connected with the frame, wherein a first driving mechanism is arranged on the frame and comprises a first chain wheel and a first flywheel which are connected through a first chain;
the second driving mechanism comprises a second chain wheel, a second flywheel and an idler wheel assembly which are connected through a second chain, and the idler wheel assembly comprises at least one idler wheel;
the number of teeth of the second chain wheel is less than that of the first chain wheel and/or the number of teeth of the second flywheel is more than that of the first flywheel.
2. The reversible variable speed bicycle of claim 1, wherein the idler assembly includes a stationary plate and two of the idlers, the two idlers including a stationary idler and a swinging idler;
the fixing plate is fixed on the frame and is fixed at a position close to a middle shaft of the frame or a rear shaft of the frame;
the fixed idler wheel and the swinging idler wheel are connected with the second flywheel and the second chain wheel through the second chain, and the horizontal height of the swinging idler wheel is higher than that of the second flywheel.
3. The reversible variable speed bicycle of claim 2, wherein the idler assembly comprises a fixed plate and a swinging plate, one side of the fixed plate is provided with an opening or a pipe clamp for fixing on the frame, and the other end of the fixed plate is provided with a fixed column which is connected with the swinging plate;
one end of the swinging piece is provided with a through hole, the fixed column penetrates through the through hole, the fixed idler is arranged on the fixed column, the other end of the swinging piece is provided with the swinging idler, and the swinging idler swings with the fixed column as the center.
4. The reversible variable speed bicycle of claim 3, wherein a fixing hole is provided on one side of the opening, and the fixing plate is fixed on the rear axle of the frame through the opening.
5. The reversible variable speed bicycle of claim 3, wherein the fixed post is provided with a torsion spring for elastically tensioning the second chain passing around the swinging idle gear.
6. The reversible variable speed bicycle of claim 2, wherein the second chain is sequentially wound through an outer side of the second chain wheel, an outer side of the idler assembly, and an upper side of the second flywheel when the idler assembly is fixed at the rear axle of the frame.
7. The reversible variable speed bicycle of claim 1, wherein the idler assembly comprises a fixing plate and a first idler, and the first idler has a level higher than the level of the second flywheel.
8. The reversible variable speed bicycle of claim 1, wherein the second crankset and the second flywheel are disposed on the inner sides of the first crankset and the first flywheel, respectively.
9. The reversible variable speed bicycle of claim 8, wherein the first flywheel and the second flywheel are integrally disposed, and the second flywheel is rotatable relative to the first flywheel; the first chain wheel and the second chain wheel are integrally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122441565.1U CN216185787U (en) | 2021-10-11 | 2021-10-11 | Bicycle capable of changing speed by reverse pedaling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122441565.1U CN216185787U (en) | 2021-10-11 | 2021-10-11 | Bicycle capable of changing speed by reverse pedaling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216185787U true CN216185787U (en) | 2022-04-05 |
Family
ID=80863670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122441565.1U Active CN216185787U (en) | 2021-10-11 | 2021-10-11 | Bicycle capable of changing speed by reverse pedaling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216185787U (en) |
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2021
- 2021-10-11 CN CN202122441565.1U patent/CN216185787U/en active Active
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