TWI538848B - A bicycle with shift gears and transmission system - Google Patents

Description

Bicycle shifting drive system

The invention relates to a bicycle shifting transmission system, in particular to a function of changing a transmission torque of a transmission system by a user to change a transmission system, and then driving the rear wheel by one of the transmission systems to generate power to drive the rear wheel. Innovative bicycle structure with stepless shifting and no chain.

According to the conventional bicycle shifting system, the sprocket with the outer diameter of the array and the outer diameter of the bicycle is provided on the side of the main drive shaft of the pedal of the bicycle, and the side of the sprocket of the rear rim is disposed outside the front sprocket. a plurality of rear sprocket having a small diameter, the front sprocket and the rear sprocket are each provided with an operating element on the left and right sides of the front end, and the operating elements are respectively connected by wires to the sprocket on the front sprocket side And the toggle element on the side of the rear sprocket, by which the position of the toggle element is driven by the cable, it can be changed which one of the several front sprocket or the plurality of rear sprocket is determined by the chain, and the output torque of the sprocket is determined. It is quite complicated for unfamiliar operators. However, this type of shifting system has been used for decades. However, because it is not possible to make the adjustment of the stepless speed change, the manpower can not be properly outputted. Therefore, the chain front and rear sprockets are still maintained. The structure. The disadvantage of the chain and sprocket drive is that it is easy to get involved in the rider's trousers, posing a danger of crashing. Secondly, when riding on an uphill section, if the manpower is not enough to load the kinetic energy required for the uphill slope, it is easy to cause the bicycle to fall back.

For this reason, the inventors have accumulated many years of experience in the structure, assembly, and riding of bicycles, and have studied the structure of the current bicycle, and have invented the present case.

The object of the present invention is to provide a bicycle-innovative design that provides a stepless shifting and no chain and prevents the bicycle from going downhill and slipping down, and simplifies the shifting operation. The impression of the structure of the driving.

In order to achieve the foregoing objective, the bicycle shifting transmission system of the present invention, wherein the shifting system is a stepless shifting system, the shifting system is operated by a user to change the output torque of the transmission system, and then the driving system is pulled and pushed. The power is generated to drive the rear wheel, achieving a bicycle structure innovation with no step change and no chain.

In the bicycle shifting transmission system of the present invention, the transmission system is provided with a transmission gear set, the transmission gear set is a high-speed gear set, and the high-speed gear set is provided with a large transmission wheel, and the large transmission wheel is disposed on one side of the main transmission shaft, and the aforementioned large transmission The wheel re-eats a small transmission wheel, the small transmission wheel is disposed on one side of the linkage shaft, the transmission system is provided with a Y-shaped transmission rod, and one end of the Y-shaped transmission rod is disposed on one side of the transmission system, after the Y-shaped transmission rod And forming an upper transmission rod and a lower transmission rod, so that the upper transmission rod and the lower transmission rod respectively generate a pulling and pushing power for the rear axle of the rear wheel rim to drive the rear wheel; the foregoing shifting system is a stepless shifting system, The bicycle structure innovation of the stepless shifting and the unchained is achieved by the user operating the shifting system to change the output torque of the transmission system.

In the bicycle shifting transmission system of the present invention, the transmission gear set of the transmission system is composed of a high speed gear set and a low speed gear set. The high speed gear set is a small transmission wheel that is combined with a large transmission wheel, and the corresponding two smoothing wheels are arranged in the small transmission wheel. The low-speed gear set is composed of a main transmission wheel and a secondary transmission wheel having the same wheel diameter, and the corresponding second gear portion is provided in the second transmission wheel, and the purpose is to step on the foot pedal when the rider is on the Y-type transmission. When the rod and the linkage shaft are at 90 degrees, or equivalent to 90 degrees, the large transmission wheel and the small transmission wheel of the high-speed gear set are formed into a no-fit state, and the main transmission shaft and the secondary transmission wheel of the low-speed gear set are in a state of eating and closing. In order to complete the torque compensation, the labor saving can be achieved and the resistance of the travel can be reduced.

In the bicycle shifting transmission system of the present invention, the transmission gear set of the transmission system is composed of a high-speed chain group, and the high-speed chain group is wound around the large transmission wheel and the small transmission wheel by a chain, and the small transmission wheel can be driven by the large transmission wheel.

In the bicycle shifting transmission system of the present invention, the shifting system is disposed on one side of the linkage shaft of the transmission system, the shifting system is provided with a shifting device, and the shifting device is provided with a blocking disc, front The umbrella-shaped sprocket with the anti-slip disk is integrated with the bevel gear of the screw, and the bevel gear is coupled to the screw shaft, and the moving member is arranged on the screw, the movement The device is further arranged for one end of the Y-shaped transmission rod; the foregoing shifting system is provided with a control device, wherein the control device is driven by the control element, and the control device is used to stop the rotation of the blocking plate of the shifting device to achieve the change of the position of the moving member. Then release the blocking plate to let it rotate freely, so that the moving parts after the movement are positioned, the output torque of the transmission system can be changed, and the structural creation feature of the stepless speed change is achieved.

1‧‧‧Drive system

10‧‧‧High speed gear set

100‧‧‧ Large transmission wheel

11‧‧‧Main drive shaft

101‧‧‧Small drive wheel

10a‧‧‧Low speed gear set

100a‧‧‧ main drive wheel

101a‧‧‧ drive wheel

102‧‧‧Smooth Department

103‧‧‧ teeth

102a‧‧‧Smooth Department

103a‧‧‧ teeth

10b‧‧‧High Speed Chain Group

100b‧‧‧Chain

12‧‧‧ linkage axis

120‧‧‧Ball bearings

121‧‧‧Medium hole

122‧‧‧Closed

13‧‧‧Y type transmission rod

130‧‧‧Upper transmission rod

131‧‧‧lower transmission rod

132‧‧‧Extension rod

14‧‧‧Steel cable

140‧‧‧Connecting block

2‧‧‧ Rear wheel

20‧‧‧彀axis

21‧‧‧First one-way bearing

210‧‧‧First bearing housing

22‧‧‧Second one-way bearing

220‧‧‧Second bearing

3‧‧‧ Fixed seat

30‧‧‧Auxiliary components

5‧‧‧中杆

4‧‧‧Transmission system

40‧‧‧Resistance disk

400‧‧‧Umbrella

401‧‧‧ ball bearings

41‧‧‧ screw

410‧‧‧Ball bearings

411‧‧‧screw seat

412‧‧‧Equipment components

413‧‧‧Umbrella gear

414‧‧‧Mobile parts

42‧‧‧Control device

420‧‧‧ fulcrum

421‧‧‧ copper sleeve

422‧‧‧ cam

423‧‧‧ transverse rod

424‧‧‧Equipment components

425‧‧‧ Torsion spring

43‧‧‧Steel cable

R‧‧‧ Radius

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a view of the present invention mounted on a bicycle.

Fig. 2 is a plan view showing a first embodiment of the present invention.

Figure 3 is a view showing the coupling of the Y-shaped transmission rod and the rear rim of the transmission system of the present invention.

4 is a view showing a torque-free compensation of the first embodiment of the transmission gear set of the present invention.

Fig. 5A is a view showing torque compensation in the first embodiment of the transmission gear set of the present invention.

Fig. 5B is a view showing the torque compensation of the first embodiment of the transmission gear set of the present invention.

Figure 6A is a plan view of a second embodiment of the transmission gear set of the present invention.

Figure 6B is a plan view of the third embodiment of the transmission gear set of the present invention.

Figure 7 is a partially enlarged plan view showing a transmission system and a shifting system according to a first embodiment of the present invention.

Figure 8 is a corresponding view of a high speed riding transmission system and a shifting system in accordance with an embodiment of the present invention.

Fig. 9 is a schematic view showing the combination of a high speed riding and shifting element and a Y-shaped transmission rod according to an embodiment of the present invention.

Fig. 10 is a view showing the operation state of the transmission system and the shifting system during the high-speed riding according to the embodiment of the present invention.

Figure 11 is a view corresponding to a transmission system and a shifting system during a slow riding according to an embodiment of the present invention.

Fig. 12 is a schematic view showing the combination of a shifting member and a Y-shaped transmission lever during a slow riding according to an embodiment of the present invention.

Fig. 13 is a view showing the operation state of the transmission system and the shifting system during the slow riding according to the embodiment of the present invention.

Figure 14 is a view of the control device of the shifting system in a normal state as shown in Figure 8A-A.

Figure 15 is a view showing a shifting system control device during shifting according to an embodiment of the present invention.

In this way, in order to enable the examiner to fully understand the bicycle shifting transmission system of the present invention, the following description is made as follows: As shown in FIGS. 1 to 3, the bicycle shifting transmission system of the present invention includes at least a transmission system 1 and a transmission gear set. The transmission gear set is a high-speed gear set 10, and the high-speed gear set 10 is provided with a large transmission wheel 100. The large transmission wheel 100 is disposed on one side of the main transmission shaft 11, and the large transmission wheel 100 is further combined with a small transmission wheel. 101, the small transmission wheel 101 is disposed on one side of the linkage shaft 12; the transmission system 1 is provided with a Y-shaped transmission rod 13, one end of the Y-shaped transmission rod 13 is disposed on one side of the transmission system 4, and the Y-shaped transmission rod The upper transmission rod 130 and the lower transmission rod 131 are formed in the subsequent stage of the 13th, and an extension rod 132 is further disposed at the end of the lower transmission rod 131. The end of the upper transmission rod 130 is coupled to the first bearing housing 210 of the first one-way bearing 21 provided by the first shaft 21 of the rear wheel rim 2, and the end of the lower transmission rod 131 is adjacent to the rear wheel rim 2 The second bearing housing 220 of the second one-way bearing 22 of the shaft 20 is interconnected (as shown in FIG. 3), and the first one-way bearing 21 and the second one-way bearing 22 are disposed in the same direction. When the upper upper transmission rod 130 is pulled forward (as shown in FIG. 2), the first bearing housing 210 is rotated clockwise, so that the first one-way bearing 21 is brought into a tight state with the first shaft 20 of the rear rim 2, The driving force of the driving shaft 20 is rotated clockwise, and at the same time, the lower transmission rod 131 causes the second one-way bearing 22 in the second bearing housing 220 to rotate counterclockwise, so that the second bearing housing 220 is twisted. The shaft 20 is loosened. Conversely, when the upper transmission rod 130 is pulled backward (as shown in FIG. 2), the first bearing housing 210 is rotated counterclockwise, so that the first one-way bearing 21 and the rear wheel rim 2 are The boring shaft 20 is loosened, and at the same time, the lower transmission rod 131 will cause the second one-way bearing 22 in the second bearing housing 220. Rotating clockwise causes the second bearing housing 220 to be brought into a tight state with the cymbal shaft 21, generating a power for driving the cymbal shaft 20 to rotate clockwise, so that the front and rear push-pull operation causes the boring shaft 20 to generate an uninterrupted forward power ( As shown in Fig. 3), when the bicycle is riding uphill, the system uses the one-way eating cooperation of the first and second one-way bearings 21, 22, so that the shaft 20 of the rear wheel rim 2 cannot rotate counterclockwise ( As shown in Figure 1), there is a danger of preventing the bicycle from going back down.

2, 4, 5A and 5B are the first embodiment of the transmission system of the present invention, wherein the transmission gear set of the transmission system 1 is composed of a high speed gear set 10 and a low speed gear set 10a. As described above, the aforementioned high speed gear set 10 is composed of The large transmission wheel 100 eats a small transmission wheel 101, and is small The transmission wheel 101 is provided with a corresponding smoothing portion 102, and the smoothing portion 102 is defined to be a smooth portion (set according to the circumference of the small transmission wheel) between the tooth portions 103 of the small transmission wheel 101, that is, smoothing The portion is not provided with a tooth portion, and the purpose is to make the large transmission wheel 100 and the small transmission wheel 101 out of the eating condition at the right time; the low-speed gear set 10a is composed of the main transmission wheel 100a and the secondary transmission wheel 101a having the same wheel diameter, and the secondary transmission The wheel 101a is provided with a corresponding two-tooth portion 103a, and the tooth portion 103a is defined, and a tooth portion 103a having a small length (provided according to the circumference of the secondary transmission wheel) is provided between the smooth portions 102a of the secondary transmission wheel 101a. It is necessary to let the main transmission wheel 100a and the secondary transmission wheel 101a eat in a timely manner. Thus, when the rider steps on the pedal so that the Y-shaped transmission rod 13 and the linkage shaft are not 90 degrees or 180 degrees (as shown in FIG. 4), that is, the over-torque high-low transition section, the large transmission wheel of the high-speed gear set 100 and the small transmission wheel 101 are in a mating state, and the main transmission wheel 100a and the secondary transmission wheel 101a of the low speed gear set 10a are in a no-fed state. When the rider steps on the pedal, causing the Y-shaped transmission rod 13, the moving member 414 and the linkage shaft to exhibit 90 degrees or 180 degrees, or equivalent to 90 degrees or 180 degrees (as shown in FIGS. 5A, 5B), that is, the moving member 414 The crank mechanism corresponding to the Y-shaped transmission rod 13 corresponding to the linkage shaft 12 is located at a position of a high-low torque transition section, and the large transmission wheel 100 and the small transmission wheel 101 of the high-speed gear set are formed into a no-fed state, and the low-speed gear set is formed. The main transmission wheel 100a and the secondary transmission wheel 101a of 10a are in a state of eating and closing, to complete the torque compensation, and the labor saving effect is achieved, and the advantage of the torque compensation is that the force applied by the rider is relatively average, and the mechanism operates. It is smoother, even if the turning moment is high or low, the turning point is high or low, and the force is not required to be stepped on, which is enough to protect the user's knees from being excessively worn and causing sports injuries. The torque level or the turning point may be the length of the smoothing portion 102 provided by the small transmission wheel 101 of the high speed gear set 10; or the length of the tooth portion 103a provided by the secondary transmission wheel 101a of the low speed gear set 10a is defined.

As shown in FIG. 6A, in the second embodiment of the transmission system of the present invention, the transmission gear set of the transmission system 1 is provided with only the high-speed gear set 10. As described above, the high-speed gear set 10 is fed by the large transmission wheel 100 to a small transmission wheel 101. And keep eating and eating at any time.

As shown in FIG. 6B, in the third embodiment of the transmission system of the present invention, the transmission gear set of the transmission system 1 is provided with a high-speed chain group 10b. As described above, the high-speed chain group 10b is wound around the large transmission wheel 100 and the small transmission by the chain 100b. The moving wheel 101 can be driven by the large transmission wheel 100 The drive wheel operates.

7 to 10 and 11 to 13, the transmission gear set of the transmission system 1 is provided with a high speed gear set 10 and a low speed gear set 10a, a small transmission wheel 101 of the high speed gear set 10 and a secondary transmission wheel 101a of the low speed gear set 10a. At the same time, it is disposed on one side of the linkage shaft 12 (hereinafter referred to as an embodiment); or the transmission system 1 is only provided with the high speed gear set 10, the small transmission wheel 101 of the high speed gear set 10 is disposed on the linkage shaft 12 One side; the interlocking shaft 12 is disposed in the fixed seat 3 by a plurality of ball bearings 120 (as shown in FIG. 8), and the connecting shaft 12 is provided with a middle hole 121 to extend the cable 14 of the shift indicating table, wherein the cable 14 is Divided into two segments, the front portion of the cable 14 passes through the aforementioned middle hole 121 and the closing member 122, and then is coupled with the connecting block 140 disposed in the middle hole 121. The rear portion of the cable 14 is first combined with the connecting block 140, and the other end is coupled with the other end. The moving parts of the shifting system are combined, and the cable 14 located at the rear stage is rotated by the turntable so as not to be twisted. One end of the interlocking shaft 12 is T-shaped, and the purpose is to limit the blocking disc of the shifting device of the shifting system 4, so that the blocking disc is positioned so as not to axially slide the interlocking shaft 12.

7 and 11, the shifting system 4 is provided with a shifting device, the shifting device is provided with a blocking disc 40, and the anti-rotation disc 40 is provided with an integral mushroom-shaped toothed disc 400. When mounted, the end of the interlocking shaft 12 is firstly passed through the resistor. The movable plate 40 can be combined with the fixed base 3, and of course, the ball bearing 401 is still provided between the blocking plate 40 and the linking shaft for supporting; the shifting device is provided with a screw 41, and the screw 41 is a plurality of balls. The bearing 410 is axially disposed inside the screw seat 411. The screw seat 411 is bolted to one end of the linkage shaft 12 by a bolting member 412. One end of the screw 41 extends from one end of the screw seat 411, and is coupled with the umbrella. The gear 413 is combined, that is, the umbrella-shaped sprocket 400 of the above-mentioned damper disk 40 and the bevel gear 413 of the screw 41 are engaged with each other, and the screw 41 is further combined with a moving member 414, that is, the piercing of the moving member 414. An internal thread is provided to be sufficient for the screw 41 to be engaged with each other. The rotation of the screw 41 drives the moving member 414 to move left and right on the screw 41. The moving member 414 passes through one end of the Y-shaped transmission rod 13. To form a rotating movable joint to allow the shifting device to be smoothed The Y-shaped transmission rod 13 is smoothly driven. Thus, the position of the movable member 414 can be changed, and the shifting movement member 414 and the Y-shaped transmission rod 13 correspond to the rotation radius r formed by the linkage shaft 12, that is, the smaller the radius r, the Y-shaped transmission rod 13 is driven. The greater the torque will be, the slower the speed, that is, the larger the radius r, the smaller the torque transmitted by the Y-shaped transmission rod 13 will be. The faster the speed (Figure 9), the purpose of changing the riding speed.

8 and 11, the shifting system 4 is provided with a control device 42. The control device 42 is provided with a support shaft 420. The support shaft 420 is disposed at an appropriate position of the fixed base 3, and is disposed on the support shaft 420 by a copper sleeve 421. The cam 422 is fixed at one end of the support shaft 420, and the transverse rod 423 is disposed at the other end. The cross rod 423 is bolted to the support shaft 420 by a bolting member 424. A torsion spring 425 is disposed between the transverse rod 423 and the fixed seat. Thus, the support shaft 420 can be rotated by driving the transverse rod 423, and the cam 422 can be driven, and the user only needs to release the wire 43 of the control element. The transverse rod 423, the support shaft 420 and the cam 422 can be returned to the original state by the torsion spring 425 to restore the free rotation of the resisting disc 40.

8 and 15, when the speed is to be changed, the user only needs to operate the control element (not shown) provided on the handle, and let the cable 43 of the control element drive the transverse rod 423 of the control device 42 to rotate to one side. The rotation of the fulcrum 420 can be simultaneously driven, and the cam 422 is abutted against the damper disc 40, and a large friction force is generated, which is sufficient for the rotation of the damper disc 40 of the shifting device by the control device. The bevel type toothed disc 400 of the movable disc 40 will generate a rotational power with the bevel gear 413 of the aforementioned screw 41, and the screw 41 is driven to rotate by the aforementioned bevel gear 413, so that the moving member 414 moves on the screw and changes. In order to increase the speed, the user only needs to continue to step on the pedal. To reduce the speed, the user only needs to step on the pedal in reverse, so that the moving parts 414 and Y can be realized. The type transmission rod 13 corresponds to the position of the linkage shaft 12 (as shown in Figs. 9 and 11). As shown in Fig. 7, by changing the rotation radius r, the purpose of the stepless speed change is achieved.

As shown in FIGS. 11 and 14, when the user has completed the adjustment of the required speed, only the control element needs to be operated, and only the cable 43 of the control element is released, and the transverse rod 423 and the support shaft 420 of the control device 42 are The cam 422 is restored to the original shape, and the cam 422 is separated from the resisting disc 40. At this time, the umbrella-shaped distorting disc 400 of the anti-rotation disc 40 is in abutment with the bevel gear 413 of the screw 41, but There is no eating power state, therefore, the screw will not rotate, of course, it will not cause the movement of the moving member. The main reason is that the above-mentioned blocking plate 40, screw 41, screw seat 411, and bevel gear 413 follow Rotating the lever 12 and rotating it. in this way, You can continue to ride the rider according to the set riding speed (Figures 10 and 13).

As shown in Figs. 7, 8, and 11, the fixing base 3 may be fitted to the bicycle center rod 5 by the auxiliary member 30. In summary, the invention completely subverts the structure of the traditional bicycle, and can have the effect of stepless speed change, and is free of chain transmission, and can also reduce the risk that the rider's pants are involved in the common involvement of the chain and the gear, and When riding on an uphill section, if the manpower is insufficient to load the kinetic energy required for the uphill slope, the danger of the bicycle going back down is avoided. The present invention does have structural advancement and novelty, and is a component of the present case.

1‧‧‧Drive system

10‧‧‧High speed gear set

100‧‧‧ Large transmission wheel

101‧‧‧Small drive wheel

10a‧‧‧Low speed gear set

100a‧‧‧ main drive wheel

101a‧‧‧ drive wheel

12‧‧‧ linkage axis

120‧‧‧Ball bearings

121‧‧‧Medium hole

122‧‧‧Closed

13‧‧‧Y type transmission rod

130‧‧‧Upper transmission rod

14‧‧‧Steel cable

140‧‧‧Connecting block

3‧‧‧ Fixed seat

30‧‧‧Auxiliary components

4‧‧‧Transmission system

40‧‧‧Resistance disk

400‧‧‧Umbrella

401‧‧‧ ball bearings

41‧‧‧ screw

410‧‧‧Ball bearings

411‧‧‧screw seat

412‧‧‧Equipment components

413‧‧‧Umbrella gear

414‧‧‧Mobile parts

42‧‧‧Control device

420‧‧‧ fulcrum

421‧‧‧ copper sleeve

422‧‧‧ cam

423‧‧‧ transverse rod

424‧‧‧Equipment components

425‧‧‧ Torsion spring

43‧‧‧Steel cable

5‧‧‧中杆

R‧‧‧ Radius

Claims (28)

A bicycle shifting transmission system comprises at least: a transmission system, a transmission gear set, the transmission gear set is a high-speed gear set, and the high-speed gear set is a large transmission wheel and a small transmission wheel, and the small transmission wheel is arranged in linkage One side of the shaft, the transmission system is provided with a Y-shaped transmission rod, one end of the Y-shaped transmission rod is disposed on one side of the shifting system, and the rear side of the Y-shaped transmission rod forms an upper transmission rod and a lower transmission rod, so that the upper transmission The lever and the lower transmission rod respectively generate a pulling and pushing power for the rear axle of the rear wheel rim to drive the rear wheel; the shifting system is provided with a shifting device disposed on one side of the linkage shaft of the transmission system, and the shifting device is configured to be blocked The disc, the anti-rotation disc is provided with an umbrella-shaped toothed disc, and the bevel-shaped gear is used to engage with the bevel gear of the shifting device. The shifting device is provided with a screw, and the screw is axially disposed in the screw seat by the screw seat In combination with the aforementioned linkage shaft, the screw is combined with the bevel gear, and the moving member is disposed on the screw, and the moving member is disposed at one end of the Y-shaped transmission rod; the shifting system is provided with a control device, The control device is driven by the cable of the control component, and the control device stops the rotation of the blocking disk to change the position of the moving member, and then releases the blocking disk to allow it to rotate freely, so that the moving moving member is positioned, that is, The output torque of the transmission system can be changed to achieve the bicycle structure innovation without step change. The bicycle shifting transmission system according to claim 1, wherein the transmission gear set of the transmission system is composed of a high speed gear set and a low speed gear set, wherein the high speed gear set is a small transmission wheel that is combined with a small transmission wheel and is mounted on the small transmission wheel. The corresponding two smoothing portions are arranged to make the large transmission wheel and the small transmission wheel timely escape from the eating and closing state; the low speed gear set is composed of a main transmission wheel and a secondary transmission wheel having the same wheel diameter, and the secondary transmission wheel is provided with a corresponding two tooth portion. The aforementioned main transmission wheel and the secondary transmission wheel are eaten in a timely manner; thus, when the angle between the Y-shaped transmission rod, the moving member and the linkage shaft is not 90 degrees or 180 degrees, that is, the over-torque high-low transition section, the high-speed gear set The large transmission wheel and the small transmission wheel are in a state of eating and closing, and the main transmission shaft and the secondary transmission wheel of the low speed gear set are in a no-fit state; when the angle between the Y-shaped transmission rod, the moving member and the linkage shaft is 90 degrees or 180 degrees When the degree is reached, that is, when the overrunning torque is high and low, the large transmission wheel and the small transmission wheel of the high speed gear set are formed into a no-fit state, and the main transmission shaft and the secondary transmission wheel of the low speed gear set are eaten. State to complete the torque compensation Reimbursement, to achieve the goal of saving effort, to make the rider's various points of force average, the mechanism works more smoothly; or the aforementioned transmission gear set is only by the high-speed gear set, the high-speed sprocket set a large transmission wheel to eat and fit The small transmission wheel is provided on one side of the linkage shaft. The bicycle shifting transmission system according to claim 2, wherein the smoothing portion of the small transmission wheel of the high speed gear set of the transmission system is provided with a smoothing portion of a small length between the teeth of the small transmission wheel, and according to the small transmission Set on the circumference of the moving wheel. The bicycle shifting transmission system according to claim 2, wherein the second gear portion of the lower transmission gear set of the transmission system is provided with a tooth portion of a smaller length between the smooth portions of the secondary transmission wheel. Set according to the circumference of the secondary transmission wheel. The bicycle shifting transmission system according to claim 2, wherein the small transmission wheel of the high speed gear set of the transmission system and the secondary transmission wheel of the low speed gear set are simultaneously disposed on one side of the linkage shaft. The bicycle shifting transmission system according to claim 1, wherein the linkage shaft of the transmission system is disposed in the fixed seat by a plurality of ball bearing shafts, wherein the interlocking shaft is provided with a middle hole to extend the steel cable of the shifting indicator; After passing through the aforementioned middle hole and the closing member, the segment is combined with the connecting block disposed in the middle hole, the rear portion of the cable is first combined with the connecting block, and the other end is combined with the moving member of the shifting system, so that the steel cable in the rear portion can be matched with the rotating table. Rotate, not to be twisted. The bicycle shifting transmission system according to claim 1, wherein one end of the Y-shaped transmission rod of the transmission system is disposed on one side of the transmission system, and the rear side of the Y-shaped transmission rod forms an upper transmission rod and a lower transmission rod, the foregoing The end of the transmission rod is further provided with an extension rod; the end of the upper transmission rod is coupled with the first bearing seat of the first one-way bearing provided by the shaft of the rear wheel rim, and the end of the lower transmission rod is connected with the rear wheel a second bearing seat of the second one-way bearing disposed on the shaft of the crucible is interconnected, and the first and second one-way bearings are disposed in the same direction. When the upper transmission rod is pulled forward, the upper transmission rod is caused The first bearing seat connected is rotated clockwise, so that the first one-way bearing is brought into a tight state with the shaft of the rear wheel cymbal, and the power for driving the cymbal clockwise is generated, and at the same time, the lower transmission rod will The second one-way bearing in the second bearing housing is rotated counterclockwise, so that the second bearing seat is loosened from the boring shaft. Conversely, when the upper transmission rod is pulled backward, the first bearing seat is reversed. Hour hand rotation, let the aforementioned Generating enough to give way bearing shaft of the rear wheel dice Loosing, at the same time, the aforementioned lower transmission rod will cause the second one-way bearing in the second bearing housing to rotate clockwise, so that the second bearing seat is brought into a tight state with the boring shaft, and the driving shaft is clockwise. The power of rotation, so before and after the push-pull operation, the aforementioned boring shaft generates uninterrupted forward power, so when the bicycle is riding uphill, the system is unidirectionally eaten by the first and second one-way bearings, so that The rear axle rim can not rotate counterclockwise, which has the danger of preventing the bicycle from going back down. The bicycle shifting transmission system according to claim 1, wherein the shifting disc provided by the shifting device of the shifting system is provided with an integral umbrella-shaped toothed disc, and a ball bearing is still disposed between the resisting disc and the interlocking shaft for supporting. The bicycle shifting transmission system according to claim 1, wherein the screw of the shifting device of the shifting system is disposed inside the screw seat with a plurality of ball bearing shafts, and the screw seat is bolted to one end of the linking shaft by a bolting member, the screw One end and one end of the screw seat are extended and combined with the bevel gear, that is, the umbrella-shaped toothed disc of the above-mentioned anti-rotation disc and the bevel gear of the screw are used to each other. According to the bicycle shifting transmission system of claim 1, wherein the screw of the shifting device of the shifting system is combined with a moving member, that is, the internal thread of the moving member is provided with a thread to be in contact with the screw, by the screw Rotate to drive the moving member to move left and right on the screw. A bicycle shifting transmission system according to claim 1, wherein the moving member of the shifting device of the shifting system passes through one end of the Y-shaped transmission rod to form a movable joint, so that the shifting device can smoothly drive the Y-shaped transmission rod. The bicycle shifting transmission system according to claim 1, wherein the shifting system is provided with a control device, the control device is provided with a support shaft, the support shaft is disposed in the fixed seat, and is disposed between the support shaft and the fixed seat by a copper sleeve, the foregoing One end of the support shaft is provided with a cam, and the other end is provided with a transverse rod. The transverse rod is bolted to the support shaft by a bolting member, and a torsion spring is arranged between the transverse rod and the fixed seat, so that the drive can be driven The transverse rod rotates the support shaft and drives the cam. The user can release the transverse rod, the support shaft and the cam by the torsion spring by simply releasing the cable of the control element. The bicycle shifting transmission system according to claim 1, wherein when the speed is to be changed, only The control element needs to be operated to rotate the transverse rod of the control device of the cable drive shifting system to one side, so that the support shaft can be driven to rotate at the same time, and the cam is pressed against the blocking disc to generate a large friction force, which is sufficient to stop the movement. When the disk rotates, at this time, the umbrella-shaped toothed disc of the blocking disk will generate power with the bevel gear of the screw, and the above-mentioned umbrella gear drives the screw to rotate, so that the moving member moves on the screw and changes the position of the setting. If you want to increase the speed, the user just needs to step on the pedals. If you want to reduce the speed, the user only needs to step on the pedals in reverse, so that the change moving parts can be matched with the Y-shaped transmission rods. At the position of the linkage axis, the purpose of changing the riding speed is achieved. A bicycle shifting transmission system comprising: at least a transmission system and a shifting system, wherein the transmission system is provided with a Y-shaped transmission rod, one end of the Y-shaped transmission rod is disposed on one side of the transmission system, and the rear side of the Y-shaped transmission rod is The upper transmission rod and the lower transmission rod are formed, so that the upper transmission rod and the lower transmission rod respectively generate a pulling and pushing power on the shaft of the rear rim to drive the rear wheel to form a structural innovation without a chain. A bicycle shifting transmission system according to claim 14, wherein one end of the Y-shaped transmission rod is disposed at one end of the moving member of the shifting device of the shifting system. The bicycle shifting transmission system according to claim 14, wherein one end of the Y-shaped transmission rod of the transmission system is disposed on one side of the shifting system, and the rear side of the Y-shaped transmission rod forms an upper transmission rod and a lower transmission rod, the foregoing The end of the transmission rod is further provided with an extension rod; the end of the upper transmission rod is coupled with the first bearing seat of the first one-way bearing provided by the shaft of the rear wheel rim, and the end of the lower transmission rod is connected with the rear wheel a second bearing seat of the second one-way bearing disposed on the shaft of the crucible is interconnected, and the first and second one-way bearings are disposed in the same direction. When the upper transmission rod is pulled forward, the upper transmission rod is caused The first bearing seat connected is rotated clockwise, so that the first one-way bearing is brought into a tight state with the shaft of the rear wheel cymbal, and the power for driving the cymbal clockwise is generated, and at the same time, the lower transmission rod will The second one-way bearing in the second bearing housing is rotated counterclockwise, so that the second bearing seat is loosened from the boring shaft. Conversely, when the upper transmission rod is pulled backward, the first bearing seat is reversed. Hour hand rotation, let the aforementioned A one-way bearing is loosened from the shaft of the rear rim, and at the same time, the lower transmission rod will cause the second one-way bearing in the second bearing housing to rotate clockwise, so that the second bearing seat can be The 彀 axis produces a tight state and generates a drive 彀 The power of the shaft rotates clockwise, so that the front and rear push-pull operation causes the aforementioned boring shaft to generate uninterrupted forward power, so when the bicycle is riding uphill, the system is unidirectionally eaten by the first and second one-way bearings. The use of the rear wheel rim can not rotate counterclockwise, which has the danger of preventing the bicycle from going back down. The bicycle shifting transmission system according to claim 14, wherein the transmission gear set of the transmission system is composed of a high speed gear set and a low speed gear set, wherein the high speed gear set is combined with a small transmission wheel and a small transmission wheel. The corresponding two smoothing portions are arranged to make the large transmission wheel and the small transmission wheel timely escape from the eating and closing state; the low speed gear set is composed of a main transmission wheel and a secondary transmission wheel having the same wheel diameter, and the secondary transmission wheel is provided with a corresponding two tooth portion. The aforementioned main transmission wheel and the secondary transmission wheel are eaten in a timely manner; thus, when the angle between the Y-shaped transmission rod, the moving member and the linkage shaft is not 90 degrees or 180 degrees, that is, beyond the turning interval, the aforementioned high-speed gear set is large The transmission wheel and the small transmission wheel are in a state of eating and closing, and the main transmission shaft and the secondary transmission wheel of the low speed gear set are in a no-fit state; when the angle between the Y-shaped transmission rod, the moving member and the linkage shaft is 90 degrees or 180 degrees When the overrunning torque is in the transition zone, the large transmission wheel and the small transmission wheel of the high speed gear set are formed into a no-fed state, and the main transmission shaft and the secondary transmission wheel of the low speed gear set are in a state of eating and closing. To complete torque compensation, but also reduce the time and effort to achieve the purpose of running resistance, so that each point of application of the average rider, agencies operate more smoothly. The bicycle shifting transmission system according to claim 17, wherein the smoothing portion of the small transmission wheel of the high speed gear set of the transmission system is provided with a smoothing portion of a small length between the teeth of the small transmission wheel, and according to the small transmission Set on the circumference of the moving wheel. The bicycle shifting transmission system according to claim 17, wherein the second gear portion of the lower transmission gear set of the transmission system is provided with a tooth portion of a smaller length between the smooth portions of the secondary transmission wheel. Set according to the circumference of the secondary transmission wheel. The bicycle shifting transmission system according to claim 17, wherein the small transmission wheel of the high speed gear set of the transmission system and the secondary transmission wheel of the low speed gear set are simultaneously disposed on one side of the linkage shaft. The bicycle shifting transmission system according to claim 14, wherein the transmission system is provided with a transmission gear set, and the transmission gear set is a high-speed gear set, and the high-speed gear set is a big pass for each other. The moving wheel and the small transmission wheel, the small transmission wheel is disposed on one side of the linkage shaft; or the transmission gear set is a high-speed sprocket set, and the high-speed sprocket set is wound around the large transmission wheel and the small transmission wheel by a chain, the aforementioned small transmission The moving wheel is arranged on one side of the linkage shaft. A bicycle shifting transmission system comprising: at least a transmission system and a shifting system, wherein the shifting system is provided with a shifting device, the shifting device is provided with a blocking disc, and the resisting disc is provided with an umbrella-shaped toothed disc, and the umbrella-shaped toothed disc is used The bevel gear is combined with the screw, the screw is disposed in the screw seat, the screw seat is coupled with the linkage shaft, the screw is coupled with the bevel gear, and the moving member is disposed on the screw. The moving member is disposed at one end of the Y-shaped transmission rod; the foregoing shifting system is provided with a control device, wherein the control device is driven by a cable of the control component, and the control device stops the rotation of the blocking disk, thereby changing the position of the moving member, and then releasing The resisting disc allows it to rotate freely, so that the moving parts after the movement are positioned, the output torque of the transmission system can be changed, and the structural innovation of the stepless shifting is achieved. The bicycle shifting transmission system according to claim 22, wherein the shifting disc provided by the shifting device of the shifting system is provided with an integral umbrella-shaped toothed disc, and a ball bearing is still disposed between the resisting disc and the interlocking shaft for supporting. The bicycle shifting transmission system according to claim 22, wherein the screw of the shifting device of the shifting system is disposed inside the screw seat by a plurality of ball bearing shafts, and the screw seat is bolted to one end of the linking shaft by a bolting member, the screw One end and one end of the screw seat are extended and combined with the bevel gear, that is, the umbrella-shaped toothed disc of the above-mentioned anti-rotation disc and the bevel gear of the screw are used to each other. The bicycle shifting transmission system according to claim 22, wherein the screw of the shifting device of the shifting system is combined with a moving member, that is, the internal thread of the moving member is provided with a thread to be in contact with the screw, by the screw Rotate to drive the moving member to move left and right on the screw. The bicycle shifting transmission system according to claim 22, wherein the moving member of the shifting device of the shifting system passes through one end of the Y-shaped transmission rod of the repetitive system to form a movable joint, so that the shifting device can smoothly drive the Y-shaped transmission rod . The bicycle shifting transmission system according to claim 22, wherein the shifting system is provided with a control device The control device is provided with a support shaft, the support shaft is disposed in the fixed seat, and is disposed between the support shaft and the fixed seat by a copper sleeve, wherein one end of the support shaft is provided with a cam, and the other end is provided with a transverse rod, and the transverse rod is A tying member is bolted to the fulcrum, and a torsion spring is disposed between the transverse rod and the fixed seat. Thus, by driving the transverse rod to rotate the fulcrum and driving the cam, the user only needs to release the control. The wire of the component can return the transverse rod, the support shaft and the cam to the original state by the torsion spring. The bicycle shifting transmission system according to claim 22, wherein when the speed is to be changed, only the control member needs to be operated, and the transverse rod of the control device of the cable drive shifting system is rotated to one side to drive the pivot at the same time. And let the cam abut against the blocking plate, generating a large friction force, which is enough to stop the rotation of the blocking disk. At this time, the umbrella-shaped toothed disk of the blocking disk will generate power with the screw gear of the screw, and by The aforementioned bevel gear drives the screw to rotate, so that the moving member moves on the screw to change the position of the setting. If the speed is to be increased, the user only needs to continue to step on the pedal. To reduce the speed, the user only needs to step on the pedal. The foot pedal can be used, so that the position of the shifting moving member and the Y-shaped transmission rod corresponding to the interlocking shaft can be achieved, and the purpose of changing the riding speed can be achieved.