TWI650265B - Dual drive bicycle - Google Patents

Abstract

A dual-drive bicycle includes a main frame, a first one-way wheel, a second one-way wheel, a pedal drive, and a seat drive. The main frame includes a lower rod and a seat rod, the seat rod is connected to the middle portion of the lower rod, and the rear portion of the lower rod pivots the rear wheel. The first one-way wheel and the second one-way wheel are respectively disposed coaxially on opposite sides of the rear wheel. The pedal driving device includes a first connecting rod and a first transmission group, the first connecting rod has a first pivoting portion correspondingly disposed on the lower rod, and the first transmission group is coupled to the first connecting rod and the first one-way rotating wheel Between the first link, the first link can swing relative to the main frame to interlock the first transmission group and drive the first one-way wheel to rotate in one direction. The seat driving device includes a second connecting rod and a second transmission group, the second connecting rod has a second pivoting portion correspondingly disposed on the seat post, and the second transmission group is coupled to the second connecting rod and the second one-way rotating wheel Between the two links can swing relative to the main frame to interlock the second transmission group and drive the second one-way wheel to rotate in one direction.

Description

Double drive bicycle

The present invention relates to a bicycle, and more particularly to a double-drive bicycle.

Bicycles (or bicycles) are currently very popular means of transportation. With the development of the times, their use has expanded from traditional means of transportation to sports, leisure or competition. In addition, when the bicycle is used, it not only consumes energy and pollutes the environment, but also has a considerable benefit to the user's physical and mental health, and thus is deeply loved by many people.

At present, the riding mode of the bicycle is that the user rides on a triangular seat cushion. The rear end of the seat cushion supports the user's buttocks and the ischial bone portion, and the user's thigh is clamped at the front end of the seat cushion, and the two legs are rotated up and down. Stepping on the pedal back and forth causes the sprocket to rotate and drive the wheel to rotate forward. However, in the design process, the user's thighs are likely to rub against the seat cushion during the stepping, and the seat cushion will continuously press the buttocks and the ischial bones. Long-term riding may cause poor blood circulation and cause discomfort.

In view of this, the present invention provides a dual-drive bicycle including a main frame, a first one-way wheel, a second one-way wheel, a pedal driving device, and a seat driving device. The main frame includes a lower rod and a seat post, wherein the lower rod includes a front section, a middle section and a rear section, the seat post is connected to the middle section, and the rear section pivots the rear wheel. The first one-way wheel and the second one-way wheel are respectively disposed coaxially on opposite sides of the rear wheel and have the same driving direction. The pedal driving device includes a first connecting rod and a first transmission group, the first connecting rod has a first pivoting portion correspondingly disposed on the lower rod, and the first transmission group is coupled to the first connecting rod and the first one-way rotating wheel The first link can swing relative to the main frame with the first pivoting portion as an axis to interlock the first transmission group and drive the first one-way rotating wheel to rotate in one direction. The seat driving device includes a second connecting rod and a second transmission group, the second connecting rod has a second pivoting portion correspondingly disposed on the seat post, and the second transmission group is coupled to the second connecting rod and the second one-way rotating wheel The second link can swing relative to the main frame with the second pivoting portion as an axis to interlock the second transmission group and drive the second one-way rotating wheel to rotate in one direction.

In summary, according to the dual-drive bicycle according to the embodiment of the present invention, the user can drive the second link of the seat driving device to swing by the weight of the seat to drive the second one-way wheel to rotate in one direction, thereby rotating the rear wheel. In addition, the user can simultaneously step down through the weight of the body to drive the first link of the pedal drive to swing to drive the first one-way wheel to rotate in one direction, and to rotate the rear wheel forward. Therefore, the embodiment of the present invention drives the bicycle to advance by the weight of the user, and the feet do not need to be stepped up and down in turn, which makes the riding easier, comfortable and labor-saving, and the seat cushion is more comfortable in design and avoids the human body. Causes oppression, which is more conducive to long-term riding.

As shown in FIGS. 1 and 2, in the present embodiment, the dual-drive bicycle 1 includes a main frame 10, a first one-way runner 14, a second one-way runner 15, a pedal driving device 20, and a seat. Drive device 30. In some embodiments, the dual-drive bicycle 1 may be a small land vehicle that is driven by a human, such as a two-wheel bicycle or a three-wheel bicycle, which is not limited.

The main frame 10 includes a lower rod 11 and a seat rod 12, wherein the lower rod 11 has a front section 111, a middle section 112 and a rear section 113, and a rear section 113 of the lower rod 11 pivots a rear wheel 13. In the present embodiment, the lower rod 11 extends in the lateral direction, the seat rod 12 extends in the vertical direction, and the bottom end of the seat rod 12 is coupled to the middle portion 112 of the lower rod 11. In the embodiment of FIG. 1, the front section 111 of the lower rod 11 can be connected to a head rod 101 and a front fork 102. The front fork 102 can be pivotally provided with a front wheel 103. The head rod 101 is provided with a control handle 104 for the user to grip. Control and stabilize the forward direction of the dual-drive bicycle 1.

The first one-way runner 14 and the second one-way runner 15 are respectively disposed coaxially on opposite sides of the rear wheel 13 . In this embodiment, the first one-way runner 14 and the second one-way runner 15 are respectively a sprocket, but this is not limited, and the first one-way runner 14 and the second one-way runner 15 may also be For a time gauge pulley. In addition, the first one-way runner 14 and the second one-way runner 15 have the same driving direction. For example, in the perspective of FIG. 1, the rear wheel 13 can be synchronously driven when the first one-way runner 14 rotates counterclockwise. Rotating counterclockwise drives the bicycle forward, and when the first one-way runner 14 rotates clockwise, it idles without driving the rear wheel 13. Similarly, when the second one-way wheel 15 rotates counterclockwise, the rear wheel 13 can also be driven to rotate counterclockwise to drive the bicycle forward. When the second one-way wheel 15 rotates clockwise, it will idle without being driven. The wheel 13, whereby the first one-way wheel 14 and the second one-way wheel 15 have the same driving direction.

In an embodiment, the pedal driving device 20 includes a first connecting rod 21 and a first transmission group 25, and the first connecting rod 21 has a first pivoting portion 22 correspondingly disposed on the lower rod 11, the first transmission group 25 The first link 21 is coupled to the first frame 21 and the first link 21 is pivoted relative to the main frame 10 with the first pivoting portion 22 as an axis to interlock the first transmission group 25 and drive The first one-way runner 14 rotates in one direction. In the embodiment of FIG. 1 and FIG. 2, the first pivoting portion 22 is located at the front end of the first link 21, and the first pivoting portion 22 can be a shaft hole and pivotally connected to the front portion 111 of the lower rod 11 through a pivot. The rear end of a link 21 is coupled to the first transmission set 25. In addition, the first link 21 may be provided with a pedal 19 for the user to step on and control the first link 21 to swing.

In the embodiment of FIGS. 1 and 2, the first transmission set 25 can include a first drive cable 26 and a first pulley 27 (pulley), and the first pulley 27 is pivotally mounted on the main frame 10 (here is a pivot) The first drive cable 26 has an opposite first end 261 and a second end 262. The first end 261 is fixed to the first link 21 (here fixed at the first position). A rear end of a link 21) is disposed around the first pulley 27 and the first one-way runner 14.

In an embodiment, the seat driving device 30 includes a second connecting rod 31 and a second transmission set 35. The second connecting rod 31 has a second pivoting portion 32 correspondingly disposed on the seat post 12, and the second transmission set 35 Between the second link 31 and the second one-way wheel 15, the second link 31 can swing relative to the main frame 10 with the second pivoting portion 32 as an axis to interlock and drive the second transmission group 35. The second one-way runner 15 rotates in one direction. For example, in the embodiment of FIG. 1 and FIG. 2, the second pivoting portion 32 is located between the two ends of the second link 31. The second pivoting portion 32 can be a shaft hole and pivotally connected to the seat post through a pivot. The top of the 12th. In addition, a pad 18 may be disposed on the second link 31 for the user to ride. In the embodiment, the seat cushion 18 is disposed between the front end of the second link 31 and the second pivot portion 32. Preferably, the length from the front end of the second link 31 to the second pivot portion 32 is shorter than the length of the second pivot portion 32 to the rear end of the second link 31.

In the embodiment of FIGS. 1 and 2, the second transmission set 35 includes a second transmission line 36 and a second pulley 37. The second pulley 37 is pivotally mounted on the main frame 10 (here is a pivoting main) On the rear fork of the frame 10, but not limited thereto, the second transmission rope 36 has a third end 361 and a fourth end 362 opposite to each other, and the third end 361 is fixed to the second link 31 (here Fixed to the rear end of the second connecting rod 31, the second driving rope 36 is disposed around the second pulley 37 and the second one-way rotating wheel 15, and the fourth end 362 of the second driving rope 36 is integrally coupled to the first driving rope The second end 262 of the pair 26 constitutes a first drive line 26 and a second drive line 36 that are in series with each other.

Referring to FIG. 1 and FIG. 2 again, in the present embodiment, the first transmission rope 26 includes a chain 264 formed in the middle portion of the first transmission rope 26 and engaging the first in the sprocket type. One-way runner 14 and the other sections of the first driveline 26 are flexible cords. The second driveline 36 also includes a chain 364 formed in the intermediate section of the second driveline 36 and engaging the second one-way runner 15 of the sprocket type, while other zones of the second driveline 36 The segments are flexible cables. However, this embodiment is merely an example and is not limited thereto. In other embodiments, the first drive cable 26 may also be in the form of a chain as a whole or the second drive cable 36 may also be in the form of a chain as a whole. In another embodiment, the first one-way runner 14 can also be a timing pulley. The middle section of the first transmission rope 26 can be a timing belt and can be engaged with the first one-way runner 14 or the first transmission rope. 26 is generally a timing belt to engage the first one-way runner 14. In another embodiment, the second one-way runner 15 can also be a timing pulley. The middle section of the second transmission rope 36 can be a timing belt and can be engaged with the second one-way runner 15 or the second transmission rope. 36 is a timing belt to engage the second one-way runner 15 .

As shown in FIG. 3, it is an operation diagram of the double-drive bicycle of the present invention. When the user wants to ride the double-drive bicycle 1, he can ride on the seat cushion 18 and put the feet on the pedal 19 to generate downward force through the user's own weight (as indicated by the arrow L1). The second link 31 is pivoted counterclockwise with respect to the seat post 12 with its second pivoting portion 32 as an axis (as indicated by an arrow L2), and the rear end of the second link 31 can be linked to the second The drive cable 36 (shown by arrow L3) drives the second one-way wheel 15 to rotate counterclockwise to rotate the rear wheel 13 counterclockwise to drive the dual-drive bicycle 1 forward. In addition, the second transmission line 36 can simultaneously oscillate the first transmission line 26 (as indicated by arrows L4 and L5) to drive the first link 21 to swing counterclockwise relative to the lower rod 11 with the first pivotal portion 22 as an axis. In turn, the user's feet are lifted up with the pedal 19. Then, as shown in FIG. 4, the user can step on the pedal 19 at the same time with both feet by the weight of the user, so that the first link 21 can be aligned with the lower rod 11 with its first pivoting portion 22 as an axis. The hour hand swings (as indicated by the arrow L6), at which time the rear end of the first link 21 can interlock the first drive rope 26 (as indicated by arrows L7, L8) to drive the first one-way runner 14 counterclockwise. Rotating causes the rear wheel 13 to rotate counterclockwise to drive the dual drive bicycle 1 forward. In addition, the first transmission rope 26 can simultaneously interlock the second transmission rope 36 (as indicated by an arrow L9) to drive the second link 31 to swing clockwise relative to the seat post 12 with the second pivot portion 32 as an axis, thereby allowing The seat cushion 18 is lifted upward (as indicated by arrow L10), and the user can again exert a downward force on the seat cushion 18 by its own weight to continuously drive the double-drive bicycle 1 forward (as shown in FIG. 3).

In summary, the embodiment of the present invention drives the bicycle forward through the weight and center of gravity of the user, and the feet do not need to be stepped up and down in turn, thereby avoiding friction or compression of the user's seat and thigh, and achieving ride. It is easier, more comfortable and less laborious, and the seat cushion 18 is designed to be more comfortable. For example, as shown in Fig. 2, the seat cushion 18 can be designed into various ergonomic shapes without being limited to the conventional triangular shape to avoid The human body causes oppression, which is more conducive to long-term riding.

As shown in FIG. 1 , in an embodiment, a first buffer body 105 and a second buffer body 106 may be disposed on the main frame 10 , and the first buffer body 105 may correspond to the swing direction of the second link 31 . When the swing amplitude is large, the second link 31 can be buffered by the first buffer body 105 without directly hitting the main frame 10, and the second buffer body 106 corresponds to the swing of the first link 21. The direction also causes the first link 21 to be cushioned by the second buffer body 106 when the swing amplitude is large without directly hitting the main frame 10, thereby improving the comfort in use. In some embodiments, the first buffer body 105 and the second buffer body 106 may be springs or cushions (for example, rubber bodies or sponges), which are not limited.

As shown in FIG. 3 and FIG. 4, in an embodiment, the dual-drive bicycle 1 further includes a multi-link mechanism 70, and the multi-link mechanism 70 is connected between the second link 31 and the seat cushion 18. For example, in the present embodiment, the multi-link mechanism 70 is a parallel four-bar linkage mechanism, so that the seat cushion 18 can be kept parallel to avoid tilting during the swinging of the second link 31. Alternatively, in another embodiment, the multi-link mechanism 70 can also be a non-parallel four-bar linkage mechanism. For example, each link of the multi-link mechanism 70 can be designed to have different lengths according to actual needs, so that the second link 31 is reversed. When the hour hand is swung (as shown in FIG. 3), the seat cushion 18 can be slightly tilted backward, or when the second link 31 is swung clockwise (as shown in FIG. 4), the seat cushion 18 can be slightly tilted forward.

In an embodiment, the main frame 10 can include at least one third pulley 16 , and the second end 262 of the first transmission rope 26 can be coupled to the fourth end 362 of the second transmission rope 36 after passing through the third pulley 16 . . For example, in the embodiment of Figures 1 and 2, the main frame 10 is provided with three third pulleys 16, 16A, 16B located in front of the rear wheel 13, wherein the third pulleys 16A, 16B are located on opposite sides of the rear wheel 13 The axial direction of the third pulleys 16A, 16B is the same as that of the first pulley 27, and the axial direction of the third pulley 16 is perpendicular to the third pulleys 16A, 16B. However, the third pulley 16, 16A is not limited in this embodiment. The axial direction of 16B can also be different according to actual needs. The second end 262 of the first transmission rope 26 can be coupled to the fourth end 362 of the second transmission rope 36 by the third pulley 16A, the third pulley 16 and the third pulley 16B in order to obtain a better support effect. . In other embodiments, the main frame 10 can also be provided with a curved guide groove. The second end 262 of the first transmission rope 26 is connected to the fourth end 362 of the second transmission rope 36 after passing through the curved guide groove. The drawings of this embodiment are omitted from illustration.

FIG. 5 is a partial perspective view of a second embodiment of the dual-drive bicycle of the present invention. The difference between this embodiment and the first embodiment described above is that the first transmission group 25 includes a first transmission rope 26, a first pulley 27 and a first rope reel 28, and the first pulley 27 and the first rope reel 28 respectively The first transmission rope 26 is disposed on the first pulley 27 and the first one-way runner 14, and the first end 261 of the first transmission rope 26 is fixed on the first link 21, and the second End 262 is coupled to first rope reel 28. Thereby, when the first link 21 swings clockwise with the first pivoting portion 22 as an axis, the first rope reel 28 can be driven to rotate clockwise to release the first driving rope 26, so that the first driving rope 26 is synchronously driven. The first one-way wheel 14 drives the rear wheel 13 to rotate. When the first link 21 swings counterclockwise with the first pivoting portion 22 as an axis, the first rope reel 28 can be driven to rotate counterclockwise to retract the first transmission. Rope 26.

Similarly, the second transmission group 35 can also include a second transmission rope 36, a second pulley 37 and a second rope reel 38, and the second pulley 37 and the second rope reel 38 are respectively pivoted on the main frame 10, The second transmission rope 36 has opposite third ends 361 and fourth ends 362. The second transmission rope 36 is wound around the second pulley 37 and the second one-way runner 15, and the third end 361 is fixed to the second link 31. The fourth end 362 is coupled to the second reel 38. Thereby, when the second link 31 swings clockwise with the second pivoting portion 32 as an axis, the second rope reel 38 can be driven to rotate clockwise to release the second drive rope 36, and the second drive rope 36 is synchronized. Driving the second one-way wheel 15 to drive the rear wheel 13 to rotate, when the second link 31 swings counterclockwise with the second pivoting portion 32 as an axis, the second rope reel 38 can be driven to rotate counterclockwise to take the second Drive cord 36.

In an embodiment, the first drive line 26 can include at least one first bumper 263, the second drive line 36 includes at least one second bumper 363, or a combination thereof. For example, as shown in FIG. 6 , in the embodiment, the first transmission rope 26 includes two first buffering members 263 , and the two first buffering members 263 are respectively formed in a partial region of the first transmission rope 26 . The elastic cord of the segment, for example, in the embodiment, wherein a first cushioning member 263 is disposed between the first end 261 of the first transmission cord 26 and the first one-way runner 14, and the other first cushioning member 263 is disposed. Between the second end 262 of the first transmission rope 26 and the first one-way runner 14, the first transmission rope 26 can be elastically buffered by the first cushioning member 263 when being pulled to increase the service life and improve the pedal Comfort. In different embodiments, the first drive cable 26 may also include only one first buffer member 263, which is not limited. In an embodiment, as shown in FIG. 6, the second transmission rope 36 may include a second cushioning member 363, and the second cushioning member 363 is an elastic cord formed in a partial section of the second transmission cord 36. The second cushioning member 363 is adjacent to the rear end of the second connecting rod 31, so that the second driving rope 36 can be elastically buffered by the second cushioning member 363 when being pulled, thereby increasing the service life and improving the riding comfort. In other embodiments, the second transmission cord 36 may also include a plurality of second cushioning members 363, which are not limited thereto.

FIG. 7 is a partial perspective view of a fourth embodiment of the dual-drive bicycle of the present invention. The difference between the embodiment and the first embodiment described above is that the dual-drive bicycle 1 further includes a position adjusting device 40 connected between the second link 31 and the second transmission line 36, and the second transmission line 36 is selectively The adjustment position is moved relative to the second link 31 via the position adjusting device 40. For example, in the present embodiment, the position adjusting device 40 includes a rack 41 disposed at the rear end of the second link 31 and an adjusting rod 42 fixed to the third end 361 of the second driving rope 36, and the user can selectively move The adjustment rod 42 is embedded in the different slots of the rack 41 to adjust the assembly position of the second transmission line 36, thereby changing the traction force generated on the second transmission line 36 when the second link 31 is swung according to the user's desire.

As shown in FIG. 7, in an embodiment, the dual-drive bicycle 1 may further include a pad adjusting device 50. The seat cushion adjusting device 50 is connected between the seat cushion 18 and the second link 31. The seat cushion 18 The adjustment position can be selectively moved relative to the second link 31 via the seat cushion adjusting device 50. For example, in the present embodiment, the seat cushion adjusting device 50 includes an elastic bead 51 disposed on the seat cushion 18, a sliding slot 51 disposed on the second connecting rod 31, and a row of fastening holes 53 disposed in the sliding slot 51. The seat cushion 18 can be controlled to slide in the sliding slot 51 according to the requirement, so that the elastic bead 51 of the seat cushion 18 is selectively elastically fastened to one of the fastening holes 53 for the purpose of adjusting the position of the seat cushion 18, but the present embodiment For the sake of example only, it is not limited to this. In other embodiments, the seat cushion 18 can also be coupled to the second link 31 via a screw lock, a snap fit, or the like.

FIG. 8 is a partial perspective view of a fifth embodiment of the dual-drive bicycle of the present invention. The difference between this embodiment and the first embodiment described above is that the dual-drive bicycle 1 further includes a pedal adjusting device 60. The pedal adjusting device 60 is connected between the pedal 19 and the first link 21, and the pedal 19 is selectively The pedal adjusting device 60 moves the adjusted position with respect to the first link 21. In the present embodiment, the pedal adjusting device 60 includes a fixing hole 61 (for example, a through hole or a screw hole) provided in the pedal 19 , a sliding groove 62 provided in the first link 21 , and a first connecting rod 21 . A row of positioning holes 63 communicating with the sliding groove 62 allows the user to manipulate the pedal 19 to slide in the sliding groove 62 as needed, so that the fixing hole 61 corresponds to one of the positioning holes 63 (for example, a through hole or a screw hole) to transmit A fixing member 64 (for example, a screw or a bolt) is worn through the fixing hole 61 and the positioning hole 63 to fix the pedal 19 for the purpose of adjusting the position of the pedal 19.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

1‧‧‧Double-drive bicycle

10‧‧‧Main frame

101‧‧‧ head rod

102‧‧‧ front fork

103‧‧‧ front wheel

104‧‧‧Control handle

105‧‧‧First buffer

106‧‧‧Second buffer

11‧‧‧Lower

111‧‧‧ front section

112‧‧‧ middle section

113‧‧‧After

12‧‧‧ seatpost

13‧‧‧ rear wheel

14‧‧‧First one-way runner

15‧‧‧Second one-way runner

16, 16A, 16B‧‧‧ third pulley

18‧‧‧ seat cushion

19‧‧‧ pedal

20‧‧‧ pedal drive

21‧‧‧ first link

22‧‧‧First pivotal

25‧‧‧First Transmission Group

26‧‧‧First transmission rope

261‧‧‧ first end

262‧‧‧ second end

263‧‧‧ first buffer

264‧‧‧Chain

27‧‧‧First pulley

28‧‧‧First rope reel

30‧‧‧Seat drive

31‧‧‧Second connecting rod

32‧‧‧Second pivotal

35‧‧‧Second gear set

36‧‧‧Second drive rope

361‧‧‧ third end

362‧‧‧ fourth end

363‧‧‧Second buffer

364‧‧‧Chain

37‧‧‧Second pulley

38‧‧‧Second rope reel

40‧‧‧ position adjustment device

41‧‧‧racks

42‧‧‧Adjustment rod

50‧‧‧Cushion adjustment device

51‧‧‧Flexible apex

52‧‧‧Chute

53‧‧‧ buttonhole

60‧‧‧ pedal adjustment device

61‧‧‧Fixed holes

62‧‧‧Sliding trough

63‧‧‧Positioning holes

64‧‧‧Fixed parts

70‧‧‧Multi-link mechanism

L1～L10‧‧‧ arrows

Fig. 1 is a plan view showing a first embodiment of a double-drive bicycle according to the present invention. Fig. 2 is a partial perspective view showing a first embodiment of the double-drive bicycle of the present invention. FIG. 3 is an operation diagram of an embodiment of a double-drive bicycle according to the present invention. Fig. 4 is a motion diagram of another embodiment of the dual-drive bicycle of the present invention. Fig. 5 is a partial perspective view showing a second embodiment of the double-drive bicycle of the present invention. Fig. 6 is a plan view showing a third embodiment of the double-drive bicycle of the present invention. Fig. 7 is a partial perspective view showing a fourth embodiment of the double-drive bicycle of the present invention. Fig. 8 is a partial perspective view showing a fifth embodiment of the double-drive bicycle of the present invention.

Claims (10)

A double-drive bicycle includes: a main frame including a lower rod and a rod, wherein the lower rod includes a front section, a middle section and a rear section, the seat post is coupled to the middle section, and the rear section of the lower pole is pivoted a first one-way wheel and a second one-way wheel respectively disposed coaxially on opposite sides of the rear wheel and having the same driving direction; a pedal driving device including a first connecting rod And a first transmission group, the first link has a first pivoting portion correspondingly disposed on the lower rod, and the first transmission group is coupled between the first link and the first one-way rotating wheel The first link can swing relative to the main frame with the first pivoting portion as an axis to interlock the first transmission group and drive the first one-way rotating wheel to rotate in one direction; and a seat driving device a second link and a second transmission set, the second link has a second pivoting portion correspondingly disposed on the seat post, and the second transmission set is coupled to the second link and the second link Between the two unidirectional runners, the second link can swing relative to the main frame with the second pivoting portion as an axis And interlocking the second transmission group and driving the second one-way rotating wheel to rotate in one direction. The double-drive bicycle according to claim 1, wherein the first transmission group includes a first transmission rope and a first pulley, the first pulley is pivotally mounted on the main frame, and the first transmission rope has a relative a first end and a second end, the first end is fixed to the first connecting rod, the first driving rope is disposed around the first pulley and the first one-way rotating wheel, the second transmission group The second transmission rope is disposed on the main frame, and the second transmission rope has an opposite third end and a fourth end, and the third end is fixed to the The second connecting rod is disposed on the second pulley and the second one-way rotating wheel, and the fourth end of the second driving rope is coupled to the second end of the first driving rope. The double-drive bicycle of claim 2, wherein the main frame further comprises at least one third pulley or at least one curved guide groove, the second end of the first transmission rope further passing the at least one third The pulley or the at least one curved guide groove is then coupled to the fourth end of the second drive rope. The double-drive bicycle according to claim 1, wherein the first transmission group includes a first transmission rope, a first pulley, and a first rope reel, the first pulley and the first rope reel respectively Provided in the main frame, the first transmission rope has a first end and a second end, the first transmission rope is disposed on the first pulley and the first one-way reel, and the first The end is fixed to the first connecting rod, the second end is connected to the first rope reel, the second transmission group comprises a second driving rope, a second pulley and a second rope reel, the second The pulley and the second rope reel are respectively pivotally disposed on the main frame, the second transmission rope has an opposite third end and a fourth end, and the second transmission rope is disposed on the second pulley and the second a two-way runner, and the third end is fixed to the second link, and the fourth end is connected to the second rope reel. A double-drive bicycle according to claim 2 or 4, wherein the first transmission rope comprises a chain or a belt, and the second transmission rope comprises a chain or a belt. The dual-drive bicycle of claim 2 or 4, wherein the first transmission cord includes a first cushioning member, and the second transmission cord includes a second cushioning member. The double-drive bicycle according to claim 2 or 4, further comprising a position adjusting device connected between the second link and the second transmission rope, the second transmission rope being selectively adjustable via the position The device moves the adjusted position relative to the second link. The double-drive bicycle according to claim 1, further comprising a pad and a pad adjusting device, the seat pad adjusting device being connected between the seat pad and the second link, the seat pad being selectively The adjustment position is moved relative to the second link via the seat cushion adjusting device. The double-drive bicycle according to claim 1, further comprising a pedal and a pedal adjusting device connected between the pedal and the first link, the pedal selectively selectively passing the pedal adjusting device The position is adjusted relative to the first link. The double-drive bicycle according to claim 1, further comprising a pad and a multi-link mechanism, the multi-link mechanism being connected between the second link and the seat pad.