CN218641016U - Chainless speed-changing bicycle - Google Patents
Chainless speed-changing bicycle Download PDFInfo
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- CN218641016U CN218641016U CN202223319226.7U CN202223319226U CN218641016U CN 218641016 U CN218641016 U CN 218641016U CN 202223319226 U CN202223319226 U CN 202223319226U CN 218641016 U CN218641016 U CN 218641016U
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Abstract
The utility model discloses a chainless variable speed bicycle, which comprises a vehicle rack, the handlebar, preceding wheel and rear wheel, rotate on the frame and install a rear axle, the rear wheel rotates through hollow shaft and installs at the rear axle epaxially, be provided with two pedal cranks on the frame, the epaxial left power wheelset and the right power wheel of installing of rear axle, driven gear set is installed to hollow shaft's left end, left side power wheelset passes through speed gearset and drives driven gear set and rotate, left side power wheelset includes first left power wheel and the left power wheel of second, driven gear set wraps first driven gear and second driven gear, speed gearset includes first spline gear, first flywheel gear, second flywheel gear and second spline gear. The utility model has the advantages of reasonable design, through setting up pedal crank to combine gear drive's mode to realize the no chain drive of bicycle, make the bicycle can carry out the variable speed and adjust, be convenient for save physical power when riding, can alleviate or avoid the damage to riding passerby knee joint.
Description
Technical Field
The utility model belongs to the technical field of the bicycle, concretely relates to chainless speed-changing bicycle.
Background
The chain transmission is generally leaned on to present bicycle, and the wearing and tearing of chain, the ageing problem of rustting can appear at the in-process that uses of chain, and these problems have caused the chain easily to drop from the sprocket or even fracture, lead to the bicycle can't normally ride to the chain bicycle is harder.
The existing bicycles which are not driven by chains are generally divided into transmission shaft bicycles and non-transmission shaft bicycles. The transmission shaft bicycle is characterized in that a gear disc is arranged at the position of a pedal rotating wheel of the bicycle, the gear disc at the position of the pedal rotating wheel is connected with a gear disc of a rear wheel through a transmission shaft, a pedal rotates under the action of external force, and the transmission shaft rotates to drive the gear disc of the rear wheel to rotate so as to drive the rear wheel to rotate; the bicycle has an unobvious labor-saving effect and is easy to injure the knee joints of a rider. Chinese patent No. CN216232803U discloses a pedal type chainless stepless speed change bicycle, which adopts a link driving mechanism to replace a chain, thus solving the problem that the chain of the existing bicycle is easy to fall, and the speed change can be performed, but two pedals do circular motion, which is easy to damage knee joints, and the speed change device switches a plurality of gears, thus the operation is complex.
Therefore, there is a need for a chainless bicycle that is easy to shift gears and reduces the damage to the knee joints.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a chainless variable speed bicycle, its structural design is reasonable, through setting up pedal crank to combine gear drive's mode to realize the chainless transmission of bicycle, make the bicycle to carry out variable speed simultaneously and adjust, be convenient for save physical power when riding, pedal crank only makes up-and-down arc motion simultaneously, the radian is not big, and then can alleviate or avoid the damage to riding passerby's knee joint.
In order to solve the technical problem, the utility model discloses a technical scheme is: a chainless speed-changing bicycle is characterized in that: including frame, handlebar, front wheel and rear wheel, its characterized in that: the frame is rotatably provided with a rear wheel shaft for mounting a rear wheel, the rear wheel is rotatably mounted on the rear wheel shaft through a hollow rotating shaft, and the left side and the right side of the frame at the position of the rear wheel are respectively provided with a pedal crank for driving the rear wheel shaft to rotate;
the left end of the rear wheel shaft is provided with a left power wheel set connected with one pedal crank, the right end of the rear wheel shaft is provided with a right power wheel connected with the other pedal crank, the left end of the hollow rotating shaft is provided with a driven gear set, the left power wheel set drives the driven gear set to rotate through a speed change gear set, and the frame is provided with a variable speed drum type gear shifting and speed regulating mechanism matched with the speed change gear set;
the left power wheel set comprises a first left power wheel and a second left power wheel which are fixedly arranged on a rear wheel shaft, the driven gear set comprises a first driven gear and a second driven gear which are arranged on the hollow rotating shaft, and the speed change gear set comprises a first spline gear, a first flywheel gear, a second flywheel gear and a second spline gear which are respectively used for being meshed with the first left power wheel, the second left power wheel, the first driven gear and the second driven gear; first spline gear, first flywheel gear, second spline gear and second flywheel gear pass through the integral key shaft and rotate and install on the frame, the equal slidable mounting of first spline gear and second spline gear is on the integral key shaft, first flywheel gear and second flywheel gear rotate and install on the integral key shaft, first spline gear and first flywheel gear can link, second spline gear and second flywheel gear can link.
The chainless speed-changing bicycle is characterized in that: the length of the rear wheel shaft is greater than that of the hollow rotating shaft, the hollow rotating shaft is sleeved on the rear wheel shaft, the hollow rotating shaft and the rear wheel shaft are coaxially arranged, and two ends of the rear wheel shaft respectively extend out of two ends of the hollow rotating shaft.
The chainless speed-changing bicycle is characterized in that: the right power wheel and the first left power wheel are both rotatably provided with a connecting rod, the connecting rod is connected with the pedal crank on the same side of the connecting rod through a connecting piece, the connecting piece is rotatably connected with the pedal crank, and the connecting piece is fixedly connected with the connecting rod.
The chainless speed-changing bicycle is characterized in that: the spline shaft is rotatably arranged on a rear seat support of the frame, is parallel to the rear wheel shaft and is positioned above the rear wheel shaft.
The chainless speed-changing bicycle is characterized in that: one side that is close to first flywheel gear on the first spline gear and one side that is close to the second flywheel gear on the second spline gear all are provided with a boss, the outside of boss is provided with a plurality of first lugs, be provided with on first flywheel gear and the second flywheel gear a plurality of with the second lug of first lug looks joint.
The chainless speed-changing bicycle is characterized in that: the variable-speed drum type gear-shifting speed-regulating mechanism comprises a first variable-speed drum type gear-shifting device and a second variable-speed drum type gear-shifting device, wherein the first variable-speed drum type gear-shifting device is used for driving a first spline gear to axially move along a spline shaft, the second variable-speed drum type gear-shifting device is used for driving a second spline gear to axially move along the spline shaft, and the first variable-speed drum type gear-shifting device and the second variable-speed drum type gear-shifting device are identical in structure.
The chainless speed-changing bicycle is characterized in that: first variable speed drum gearshift include through the variable speed support rotate install on the frame the variable speed drum with variable speed drum matched with shift fork, all set up an annular spout that supplies shift fork sliding connection on the boss of first spline gear and second spline gear.
The chainless speed-changing bicycle is characterized in that: the handlebar is provided with two gear shifting handles which are respectively matched with the first variable speed drum type gear shifting device and the second variable speed drum type gear shifting device, the gear shifting handles are connected with the corresponding variable speed drums through pull ropes, and the variable speed support is provided with an elastic connecting piece for resetting the shifting fork.
The chainless speed-changing bicycle is characterized in that: the diameter of the first left power wheel is larger than that of the first spline gear, the diameter of the second left power wheel is larger than that of the first flywheel gear, the diameter of the second flywheel gear is larger than that of the first driven gear, and the diameter of the second spline gear is larger than that of the second driven gear.
The chainless speed-changing bicycle is characterized in that: the first driven gear and the second driven gear are mounted on the hollow rotating shaft through a flywheel.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses an install two pedal cranks respectively and lie in the left and right sides of rear wheel position on the frame, can make pedal articulate length longer, and then be convenient for save physical power when riding, pedal crank only makes the up-and-down arc motion simultaneously, and the radian is not big, and then can alleviate or avoid the damage to riding passerby's knee joint.
2. The utility model discloses a hollow rotating shaft installs the rear wheel rotation at the rear wheel epaxial to install left power wheelset and right power wheel respectively at the both ends of rear wheel axle, install driven gear group at the left end of hollow rotating shaft, and realize left power wheelset and driven gear group's transmission through speed gearset, can effectively realize the variable speed of bicycle according to the demand of riding the car.
3. The utility model discloses a set up variable speed drum gear shift speed adjusting mechanism for shift easy operation can realize the fast switch-over of gear.
To sum up, the utility model has the advantages of reasonable design, shift easy operation is through setting up pedal crank to combine gear drive's mode to realize the no chain drive of bicycle, make the bicycle can carry out the variable speed simultaneously and adjust, be convenient for save physical power when riding, pedal crank only makes the up-and-down arc motion simultaneously, and the radian is not big, and then can alleviate or avoid the damage to riding passerby's knee joint.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a transmission structure of the first transmission of the present invention.
Fig. 3 is a schematic view of the connection structure between the shift drum and the rear seat bracket according to the present invention.
Description of reference numerals:
1, a frame; 1-1 — a rear seat support; 2, a handlebar;
3-front wheel; 4-rear wheel; 5-rear axle;
6-hollow rotating shaft; 7-pedal crank; 8-connecting pieces;
9-connecting rod; 10-right power wheel; 11-a first left power wheel;
12-a second left power wheel; 13 — a first driven gear; 14-a second driven gear;
15 — a first spline gear; 16 — a first flywheel gear; 17-a second flywheel gear;
18-a second spline gear; 19-a spline shaft; 20, forming a boss;
20-1-annular chute; 21-a shift drum; 22-a shifting fork;
23-a shift handle; 24-pulling a rope; 25-an elastic connecting piece;
26-a transmission carrier; 27 — a first bump; 28 — a second bump;
29-flywheel.
Detailed Description
As shown in fig. 1 to 3, the utility model discloses a frame 1, handlebar 2, front wheel 3 and rear wheel 4, its characterized in that: a rear wheel shaft 5 for mounting a rear wheel 4 is rotatably mounted on the frame 1, the rear wheel 4 is rotatably mounted on the rear wheel shaft 5 through a hollow rotating shaft 6, and pedal cranks 7 for driving the rear wheel shaft 5 to rotate are respectively arranged on the left side and the right side of the frame 1 at the position of the rear wheel 4;
a left power wheel set connected with one pedal crank 7 is installed at the left end of the rear wheel shaft 5, a right power wheel 10 connected with the other pedal crank 7 is installed at the right end of the rear wheel shaft 5, a driven gear set is installed at the left end of the hollow rotating shaft 6, the left power wheel set drives the driven gear set to rotate through a speed change gear set, and a speed change drum type gear shifting and speed regulating mechanism matched with the speed change gear set is arranged on the frame 1;
the left power wheel set comprises a first left power wheel 11 and a second left power wheel 12 which are fixedly arranged on the rear wheel shaft 5, the driven gear set comprises a first driven gear 13 and a second driven gear 14 which are arranged on the hollow rotating shaft 6, and the speed change gear set comprises a first spline gear 15, a first flywheel gear 16, a second flywheel gear 17 and a second spline gear 18 which are respectively used for being meshed with the first left power wheel 11, the second left power wheel 12, the first driven gear 13 and the second driven gear 14; first spline gear 15, first flywheel gear 16, second spline gear 18 and second flywheel gear 17 rotate through integral key shaft 19 and install on frame 1, first spline gear 15 and the equal slidable mounting of second spline gear 18 are on integral key shaft 19, first flywheel gear 16 and second flywheel gear 17 rotate and install on integral key shaft 19, first spline gear 15 and first flywheel gear 16 can link, second spline gear 18 and second flywheel gear 17 can link.
During the in-service use, pedal crank 7 includes the crank and sets up the running-board in crank one end, and the articulate other end rotates and installs on frame 1, through installing two pedal crank 7 respectively on frame 1 and lie in the left and right sides of rear wheel 4 positions, can make pedal crank 7's length longer, and then be convenient for save physical power when riding, pedal crank 7 only makes the up-and-down arc motion simultaneously, and the radian is not big, and then can alleviate or avoid the damage to riding passerby's knee joint.
It should be noted that the rear wheel 4 is rotatably mounted on the rear wheel shaft 5 through the hollow rotating shaft 6, the left power wheel set and the right power wheel 10 are respectively mounted at two ends of the rear wheel shaft 5, the driven gear set is mounted at the left end of the hollow rotating shaft 6, transmission of the left power wheel set and the driven gear set is realized through the speed change gear set, and speed change of the bicycle can be effectively realized according to requirements of a riding vehicle.
In specific implementation, after the first spline gear 15 slides to be connected with the first flywheel gear 16, the first spline gear 15, the first flywheel gear 16 and the spline shaft 19 can synchronously rotate, and after the second spline gear 18 slides to be connected with the second flywheel gear 17, the second spline gear 18, the second flywheel gear 17 and the spline shaft 19 can synchronously rotate;
when the first left power wheel 11 is meshed with the first spline gear 15 and the second spline gear 18 is meshed with the second driven gear 14, for first speed change, the left pedal crank 7 drives the first left power wheel 11 to rotate, or the right pedal crank 7 drives the right power wheel 10 to rotate, so that the first left power wheel 11 rotates, the first left power wheel 11 drives the first spline gear 15 to rotate, the second spline gear 18 rotates, the second driven gear 14 rotates, and the rear wheel 4 rotates; the second speed change is that the first left power wheel 11 is not meshed with the first spline gear 15, the first spline gear 15 slides to be connected with the first flywheel gear 16, the second spline gear 18 is meshed with the second driven gear 14, the second left power wheel 12 drives the first flywheel gear 16 to synchronously rotate with the first spline gear 15, and the second spline gear 18 drives the second driven gear 14 to rotate; the third speed change is that the first left power wheel 11 is meshed with the first spline gear 15, the second spline gear 18 is not meshed with the second driven gear 14, the second spline gear 18 slides to be connected with the second flywheel gear 17, and the second flywheel gear 17 and the second spline gear 18 synchronously rotate to drive the first driven gear 13 to rotate; the fourth speed change is that the first left power wheel 11 is not meshed with the first spline gear 15, the first flywheel gear 16 is connected with the first spline gear 15, the second spline gear 18 is not meshed with the second driven gear 14, the second spline gear 18 slides to be connected with the second flywheel gear 17, and the second left power wheel 12 drives the first flywheel gear 16 to rotate synchronously with the first spline gear 15, the second flywheel gear 17 rotates synchronously with the second spline gear 18, and then the first driven gear 13 is driven to rotate.
In specific implementation, the two pedal cranks 7 are respectively connected with the first left power wheel 11 and the right power wheel 10, so that the two pedal cranks 7 can alternately pedal to realize the forward movement of the whole bicycle; the first spline gear 15 and the second spline gear 18 each rotate in synchronization with the spline shaft 19.
In this embodiment, the length of the rear axle 5 is greater than the length of the hollow rotating shaft 6, the hollow rotating shaft 6 is sleeved on the rear axle 5, the hollow rotating shaft 6 and the rear axle 5 are coaxially arranged, and two ends of the rear axle 5 respectively extend out of two ends of the hollow rotating shaft 6.
During the in-service use, rear axle 5 wears to establish in hollow pivot 6, and hollow pivot 6 can rotate rear axle 5 relatively, and car rear wheel 4 is adorned as an organic whole with hollow pivot 6 is solid.
In this embodiment, the right power wheel 10 and the first left power wheel 11 are both rotatably provided with a connecting rod 9, the connecting rod 9 is connected with the pedal crank 7 on the same side of the connecting rod 9 through a connecting piece 8, the connecting piece 8 is rotatably connected with the pedal crank 7, and the connecting piece 8 is fixedly connected with the connecting rod 9 to form a crank connecting rod.
When the pedal crank is actually used, the connecting piece 8 is rotationally connected with the pedal crank 7 through the rotating shaft, and the connecting piece 8 and the connecting rod 9 are integrally formed.
The pedal crank 7 is bent, the connecting rod 9 is a bent connecting rod, and the connecting piece 8 is connected to the bent part of the pedal crank 7.
In this embodiment, the spline shaft 19 is rotatably mounted on the rear seat bracket 1-1 of the frame 1, the spline shaft 19 is parallel to the rear wheel shaft 5, and the spline shaft 19 is located above the rear wheel shaft 5.
In actual use, the spline shaft 19 is mounted on the rear seat support 1-1 through a bearing, and the rear seat support 1-1 is rotatably connected with the rear wheel shaft 5.
In this embodiment, a boss 20 is disposed on one side of the first spline gear 15 close to the first flywheel gear 16 and one side of the second spline gear 18 close to the second flywheel gear 17, a plurality of first protrusions 27 are disposed on the outer side of the boss 20, and a plurality of second protrusions 28 are disposed on the first flywheel gear 16 and the second flywheel gear 17 and are connected with the first protrusions 27 in a clamping manner.
In practical use, when the plurality of first projections 27 on one side of the first spline gear 15 and the plurality of second projections 28 on the first flywheel gear 16 are alternately clamped together, the first spline gear 15 and the first flywheel gear 16 can be connected together to synchronously rotate, when the plurality of first projections 27 on one side of the second spline gear 18 and the plurality of second projections 28 on the second flywheel gear 17 are alternately clamped together, the second spline gear 18 is connected together near the second flywheel gear 17 to synchronously rotate.
In this embodiment, the variable-drum gear shift speed adjusting mechanism includes a first variable-drum gear shift device for driving the first spline gear 15 to axially move along the spline shaft 19, and a second variable-drum gear shift device for driving the second spline gear 18 to axially move along the spline shaft 19, and the first variable-drum gear shift device and the second variable-drum gear shift device have the same structure.
During the in-service use, through setting up first variable speed drum gearshift and second variable speed drum gearshift, can carry out the fast switch over gear, be convenient for ride the vehicle operation.
As shown in fig. 2 and fig. 3, in the present embodiment, the first drum gear shifting device includes a shift drum 21 rotatably mounted on the frame 1 through a shift bracket 26 and a shift fork 22 engaged with the shift drum 21, and the bosses 20 of the first spline gear 15 and the second spline gear 18 are respectively provided with an annular sliding groove 20-1 for slidably connecting the shift fork 22.
During actual use, the speed changing support 26 is an L-shaped support and is fixed on the rear seat support 1-1, the speed changing drum 21 is rotatably installed between the outside of one side of the rear seat support 1-1 and one side of the speed changing support 26, the shifting fork 22 comprises an annular sliding sleeve sleeved on the outside of the speed changing drum 21 and a U-shaped clamping piece arranged at the bottom of the annular sliding sleeve, an arc-shaped groove matched with the annular sliding groove 20-1 is formed in the bottom of the U-shaped clamping piece, a sliding block is arranged on the inner ring of the annular sliding sleeve of the shifting fork 22, a guide groove for guiding the sliding block is formed in the speed changing drum 21, and the guide groove is formed in such a way that when the speed changing drum 21 rotates, the shifting fork 22 moves along the axial direction of the speed changing drum 21.
As shown in fig. 1 and 3, in the present embodiment, two shift levers 23 respectively engaged with the first and second drum shifters are provided on the handlebar 2, the shift levers 23 are connected to the shift drums 21 corresponding thereto through pull ropes 24, and the shift bracket 26 is provided with an elastic connecting member 25 for resetting the shift fork 22.
During the in-service use, stay cord 24 and elastic connection spare 25 are used for making shift drum 21 to opposite direction rotation, and shift handle 23 is similar with current xi ma nuo RS35-7 speed governing handle structure, controls tightening up and relaxing of stay cord 24 through twisting shift handle 23 for stay cord 24 and elastic connection spare 25 drive shift drum 21 respectively and carry out corotation and reversal, can realize shifting.
It should be noted that one end of the pulling rope 24 is wound in the shift handle 23, the other end of the pulling rope 24 is connected to the sidewall of the bottom of one end of the shift drum 21 after passing through the shift bracket 26 and winding a half turn from one side of the shift drum 21, the elastic connecting piece 25 is an elastic rope, one end of the elastic connecting piece 25 is fixed on the shift bracket 26, and the other end of the elastic connecting piece 25 is connected to the sidewall of the top of the other end of the shift drum 21;
when the gear is shifted and the speed is adjusted, the shift handle 23 controls the pull rope 24 to be tensioned and enables the speed change drum 21 to rotate forwards, and meanwhile, the shifting fork 22 on the speed change drum 21 drives the first spline gear 15 to be connected with the first flywheel gear 16 or drives the second spline gear 18 to be connected with the second flywheel gear 17; when the front gear needs to be adjusted back, the shift handle 23 controls the pull rope 24 to loosen, the elastic connecting piece 25 enables the speed changing drum 21 to reversely rotate and reset under the action of elastic force, and meanwhile, the shifting fork 22 on the speed changing drum 21 drives the first spline gear 15 to be separated from the first flywheel gear 16 or drives the second spline gear 18 to be separated from the second flywheel gear 17.
In concrete implementation, the shift handle 23 and the corresponding shift drum 21 are connected through the pull rope 24, so that the operation is simple, and the gears can be quickly switched.
In this embodiment, the diameter of the first left power wheel 11 is greater than the diameter of the first spline gear 15, the diameter of the second left power wheel 12 is greater than the diameter of the first flywheel gear 16, the diameter of the second flywheel gear 17 is greater than the diameter of the first driven gear 13, and the diameter of the second spline gear 18 is greater than the diameter of the second driven gear 14.
In practical use, the first left power wheel 11 and the second left power wheel 12 are fixed gears fixedly mounted on the rear axle 5, and the diameter of the first left power wheel 11 refers to the pitch circle diameter of the first left power wheel 11.
During concrete implementation, a brake device is further installed on the bicycle, and the brake device adopts an existing structure.
In this embodiment, the first driven gear 13 and the second driven gear 14 are mounted on the hollow rotating shaft 6 through a flywheel 29.
In practical use, the first driven gear 13 and the second driven gear 14 are fixedly mounted on the flywheel 29, the flywheel 29 is a movable flywheel, and the flywheel 29 is arranged to enable the first driven gear 13 and the second driven gear 14 to drive the hollow rotating shaft 6 to rotate forwards through the flywheel 29, so that the rear wheel 4 rotates forwards, but when the rear wheel 4 rotates backwards, the flywheel 29 cannot rotate together with the hollow rotating shaft 6.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (10)
1. A chainless speed-changing bicycle is characterized in that: including frame (1), handlebar (2), front wheel (3) and rear wheel (4), its characterized in that: a rear wheel shaft (5) for mounting a rear wheel (4) is rotatably mounted on the frame (1), the rear wheel (4) is rotatably mounted on the rear wheel shaft (5) through a hollow rotating shaft (6), and pedal cranks (7) for driving the rear wheel shaft (5) to rotate are respectively arranged on the left side and the right side of the frame (1) at the position of the rear wheel (4);
a left power wheel set connected with one pedal crank (7) is installed at the left end of the rear wheel shaft (5), a right power wheel (10) connected with the other pedal crank (7) is installed at the right end of the rear wheel shaft (5), a driven gear set is installed at the left end of the hollow rotating shaft (6), the left power wheel set drives the driven gear set to rotate through a speed change gear set, and a speed change drum type gear shifting and speed regulating mechanism matched with the speed change gear set is arranged on the frame (1);
the left power wheel set comprises a first left power wheel (11) and a second left power wheel (12) which are fixedly arranged on a rear wheel shaft (5), the driven gear set comprises a first driven gear (13) and a second driven gear (14) which are arranged on a hollow rotating shaft (6), and the speed change gear set comprises a first spline gear (15), a first flywheel gear (16), a second flywheel gear (17) and a second spline gear (18) which are respectively used for being meshed with the first left power wheel (11), the second left power wheel (12), the first driven gear (13) and the second driven gear (14); first spline gear (15), first flywheel gear (16), second spline gear (18) and second flywheel gear (17) rotate through integral key shaft (19) and install on frame (1), first spline gear (15) and the equal slidable mounting of second spline gear (18) are on integral key shaft (19), first flywheel gear (16) and second flywheel gear (17) rotate and install on integral key shaft (19), first spline gear (15) and first flywheel gear (16) can link, second spline gear (18) and second flywheel gear (17) can link.
2. A chainless variable speed bicycle according to claim 1, wherein: the length of the rear wheel shaft (5) is larger than that of the hollow rotating shaft (6), the hollow rotating shaft (6) is sleeved on the rear wheel shaft (5), the hollow rotating shaft (6) and the rear wheel shaft (5) are coaxially arranged, and two ends of the rear wheel shaft (5) respectively extend out of two ends of the hollow rotating shaft (6).
3. The chainless bicycle of claim 1, wherein: all rotate on right side power wheel (10) and first left power wheel (11) and install a connecting rod (9), connect through even piece (8) between connecting rod (9) and pedal crank (7) rather than the homonymy, rotate between even piece (8) and pedal crank (7) and be connected, fixed connection between even piece (8) and connecting rod (9).
4. The chainless bicycle of claim 1, wherein: the spline shaft (19) is rotatably arranged on a rear seat support (1-1) of the frame (1), the spline shaft (19) is parallel to the rear wheel shaft (5), and the spline shaft (19) is positioned above the rear wheel shaft (5).
5. The chainless bicycle of claim 1, wherein: one side that is close to second flywheel gear (17) on one side and second spline gear (18) of being close to first flywheel gear (16) on first spline gear (15) all is provided with a boss (20), the outside of boss (20) is provided with a plurality of first lugs (27), be provided with on first flywheel gear (16) and second flywheel gear (17) a plurality of with second lug (28) of first lug (27) looks joint.
6. A chainless variable speed bicycle according to claim 5, wherein: the variable-speed drum type gear-shifting speed-regulating mechanism comprises a first variable-speed drum type gear-shifting device and a second variable-speed drum type gear-shifting device, wherein the first variable-speed drum type gear-shifting device is used for driving a first spline gear (15) to axially move along a spline shaft (19), the second variable-speed drum type gear-shifting device is used for driving a second spline gear (18) to axially move along the spline shaft (19), and the first variable-speed drum type gear-shifting device and the second variable-speed drum type gear-shifting device are identical in structure.
7. A chainless variable speed bicycle according to claim 6, wherein: the first variable-speed drum type gear shifting device comprises a variable-speed drum (21) rotatably mounted on the frame (1) through a variable-speed support (26) and a shifting fork (22) matched with the variable-speed drum (21), and annular sliding grooves (20-1) for sliding connection of the shifting fork (22) are formed in bosses (20) of the first spline gear (15) and the second spline gear (18).
8. The chainless bicycle of claim 7, wherein: be provided with two shift handle (23) with first variable speed drum gearshift and second variable speed drum gearshift matched with on handlebar (2) respectively, shift handle (23) and rather than connect through stay cord (24) between the variable speed drum (21) that correspond, be provided with on variable speed support (26) and be used for carrying out the elastic connecting piece (25) that resets shift fork (22).
9. The chainless bicycle of claim 1, wherein: the diameter of the first left power wheel (11) is larger than that of the first spline gear (15), the diameter of the second left power wheel (12) is larger than that of the first flywheel gear (16), the diameter of the second flywheel gear (17) is larger than that of the first driven gear (13), and the diameter of the second spline gear (18) is larger than that of the second driven gear (14).
10. The chainless bicycle of claim 1, wherein: the first driven gear (13) and the second driven gear (14) are arranged on the hollow rotating shaft (6) through a flywheel (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223319226.7U CN218641016U (en) | 2022-12-09 | 2022-12-09 | Chainless speed-changing bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223319226.7U CN218641016U (en) | 2022-12-09 | 2022-12-09 | Chainless speed-changing bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218641016U true CN218641016U (en) | 2023-03-17 |
Family
ID=85501059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223319226.7U Active CN218641016U (en) | 2022-12-09 | 2022-12-09 | Chainless speed-changing bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218641016U (en) |
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2022
- 2022-12-09 CN CN202223319226.7U patent/CN218641016U/en active Active
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