CN108725651B

CN108725651B - Bicycle with a wheel

Info

Publication number: CN108725651B
Application number: CN201810528633.8A
Authority: CN
Inventors: 项炳海
Original assignee: Individual
Current assignee: Linshu Jicai Human Resources Service Co ltd
Priority date: 2018-05-29
Filing date: 2018-05-29
Publication date: 2020-10-02
Anticipated expiration: 2038-05-29
Also published as: CN112026974A; CN112026973A; CN108725651A

Abstract

The invention belongs to the technical field of bicycles, and particularly relates to a bicycle which comprises a handlebar, a U-shaped supporting plate, a rear supporting rod, a head pipe sleeve, a third shaft sleeve, a second belt pulley, a second belt, a fifth supporting rod, a fourth shaft sleeve, a first belt pulley, a first belt, a second pedal, a first crank plate, a second crank plate and the like, wherein two wide front wheels and two wide rear wheels can be better in friction braking with the ground, and the braking distance is shortened; the two wide front wheels and the two wide rear wheels can also prevent the wheels of the bicycle from generating large horizontal swing when the bicycle is braked rapidly, prevent the bicycle from falling down and protect riders; in addition, the design that the frame swings and the wide wheel does not swing can solve the defects when the wide wheel is used. The invention has simple structure and better practical effect.

Description

Bicycle with a wheel

Technical Field

The invention belongs to the technical field of bicycles, and particularly relates to a bicycle.

Background

At present, in the braking process of a traditional bicycle, the rotating speed of a bicycle wheel is rapidly reduced through a braking mechanism, and then the bicycle is stopped through the friction between a bicycle tire and the ground. When the bicycle is braked normally, the bicycle can be stopped stably, but when a rider rides the bicycle quickly, the rotation speed of the wheels of the bicycle is high; when a rider encounters a sudden situation and needs to brake quickly, the bicycle wheel changes from quick rotation to slow rotation in a very short time and even stops rotating. Since the width of the tires of a typical bicycle is narrow, when the bicycle is braked for a very short period of time, the wheels of the bicycle are likely to make a very large yaw, which is likely to cause the rider to fall out of control. In addition, because the width of the bicycle tire is very narrow, the braking distance of the bicycle is prolonged in a very short braking process, and certain hidden danger is caused to a rider to avoid an emergency. In order to prevent the wheels of the bicycle from generating large yaw when the bicycle is braked in a very short time and ensure that the braking distance of the bicycle is greatly shortened, the bicycle with high efficiency and stable braking needs to be designed.

The invention designs a bicycle to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a bicycle which is realized by adopting the following technical scheme.

A bicycle, characterized in that: the bicycle comprises a handlebar, an arc-shaped plate, a first ring sleeve, a first supporting rod, a first shaft sleeve, a front wheel, a bicycle beam rod, a front supporting rod, a second shaft sleeve, a second supporting rod, a third supporting rod, a U-shaped supporting plate, a rear supporting rod, a seat rod, a bicycle seat, a front belt pulley, a first pedal, an executing mechanism, a rear wheel, a bicycle head rod, a bicycle head pipe sleeve, a third shaft sleeve, a second belt pulley, a second belt, a fifth supporting rod, a fourth shaft sleeve, a first belt pulley, a first belt, a second pedal, a first crank plate, a second crank plate, a first fixed shaft, a second fixed shaft, a rear belt pulley, a third fixed shaft, a belt groove, an arc-shaped groove, a swinging block and a fourth fixed shaft, wherein the bicycle head pipe sleeve is installed at one end of the bicycle beam rod; the saddle is arranged on the outer circular surface of one end of the beam rod, which is far away from the headstock sleeve, through the seat rod, and the saddle is positioned on the upper side of the beam rod; one end of the front support rod is arranged on the outer circular surface of one end of the beam rod, which is provided with the headstock sleeve, and the other end of the front support rod is provided with the second shaft sleeve; the front support rod is positioned at the lower side of the beam rod; one end of the second supporting rod is arranged on the outer circular surface of the second shaft sleeve, and the other end of the second supporting rod is provided with an actuating mechanism; one end of the rear support rod is arranged on the outer circular surface of one end of the beam rod, which is far away from the head pipe sleeve, and the other end of the rear support rod is provided with a U-shaped support plate; the rear support rod is positioned at the lower side of the beam rod; one end of the third supporting rod is arranged on the outer circular surface of the second supporting rod, and the other end of the third supporting rod is arranged on one side, far away from the rear supporting rod, of the U-shaped supporting plate; the third supporting rod is close to the actuating mechanism.

One end of the headstock rod is provided with an arc-shaped plate, and the other end of the headstock rod penetrates through the headstock pipe sleeve and is provided with a handlebar; the lower end of the arc-shaped plate is provided with a first ring sleeve; an arc-shaped groove is formed in the inner circular surface of the first ring sleeve; two front wheels are symmetrically arranged at two ends of the first fixed shaft; the first shaft sleeve is arranged on the outer circular surface of the first fixed shaft and is positioned between the two front wheels; one end of the first supporting rod is arranged on the outer circular surface of the first shaft sleeve, and the other end of the first supporting rod is arranged in the first ring sleeve; a swinging block is arranged on the outer circular surface of one end of the first supporting rod, which is far away from the first shaft sleeve; the swinging block is positioned in the arc-shaped groove.

One end of the second fixed shaft is provided with a first crank plate, and the other end of the second fixed shaft penetrates through the second shaft sleeve and is provided with a second crank plate; the front belt pulley is arranged on the outer circular surface of the second fixed shaft and is positioned between the second shaft sleeve and the second crank plate; the first pedal is arranged on one end of the first crank plate far away from the second fixed shaft through a shaft; the second pedal is mounted on one end of the second crank plate far away from the second fixed shaft through a shaft.

One end of the fifth supporting rod is provided with a third shaft sleeve, and the other end of the fifth supporting rod is provided with a fourth shaft sleeve; the actuating mechanism is connected with the third shaft sleeve; one end of the third fixed shaft is provided with a first belt pulley, and the other end of the third fixed shaft penetrates through the third shaft sleeve and is provided with a second belt pulley; the fourth fixed shaft is arranged in the fourth shaft sleeve, and the fourth fixed shaft penetrates through the fourth shaft sleeve; two rear wheels are symmetrically arranged at two ends of the fourth fixed shaft; the rear belt pulley is arranged on the outer circular surface of the fourth fixed shaft; the rear belt pulley is positioned between the fourth shaft sleeve and the rear wheel, and the rear belt pulley and the second belt pulley are positioned on the same side of the fifth supporting rod; the rear belt pulley and the second belt pulley are positioned on the same plane; the front belt pulley and the first belt pulley are positioned on the same side of the second support rod, and the front belt pulley and the first belt pulley are positioned on the same plane.

A belt groove is formed on the outer circular surface of the front belt pulley; a belt groove is formed on the outer circular surface of the rear belt pulley; a belt groove is formed in the outer circular surface of the first belt pulley; a belt groove is formed in the outer circular surface of the second belt pulley; the first belt is arranged in a belt groove of the front belt pulley and a belt groove of the first belt pulley; the second belt is installed in a belt groove of the rear pulley and a belt groove of the second pulley.

The executing mechanism comprises a fourth supporting rod, a first disc, a sliding column, a first spring, a second disc, a hollow cylinder, a spiral sliding chute, a rod hole and a sliding cavity, wherein the hollow cylinder is arranged on the second supporting rod; the hollow cylinder is provided with a sliding cavity; the side surface of the hollow cylinder far away from the second supporting rod is provided with a rod hole; the rod hole is communicated with the sliding cavity; two spiral sliding chutes are symmetrically arranged on the inner circular surface of the sliding cavity along the axis direction, and the projection radian of each spiral sliding chute is 20 degrees; the two spiral chutes are communicated; the second disc is arranged in the sliding cavity; one end of the fourth supporting rod is arranged on the outer circular surface of the third shaft sleeve, and the other end of the fourth supporting rod penetrates through the rod hole and is provided with a first disc; the first disc is positioned in the sliding cavity; a sliding column is arranged on the outer circular surface of the first disc; the sliding column is positioned in the spiral sliding chute and slides in the spiral sliding chute; one end of the first spring is arranged on the first disk, and the other end of the first spring is arranged on the second disk.

As a further improvement of the technology, the handlebar grip further comprises two handlebar grips, wherein the two handlebar grips are respectively arranged at two ends of the handlebar.

As a further improvement of the present technique, the end of the spool remote from the first disk has a rounded corner.

As a further improvement of the technology, the radian of the arc-shaped groove is 40 degrees.

As a further improvement of the technology, when the first ring sleeve does not rotate, the swinging block is positioned in the middle of the arc-shaped groove.

As a further improvement of the present technology, the first pulley and the second pulley are the same in size; the diameter of the front belt pulley is larger than that of the first belt pulley; the diameter of the second belt pulley is larger than that of the rear belt pulley.

As a further improvement of the present technology, the first spring is a compression spring, and the first spring is always in a compressed state.

As a further improvement of the technology, the communicated connecting point of the two spiral chutes is named as a point A; when the hollow cylinder is not rotating, the spool is located at point a.

The frame is composed of a headstock sleeve, a beam rod, a rear support rod, a front support rod, a second shaft sleeve, a second support rod, a third support rod and a U-shaped support plate; when the frame swings, the frame can drive the head rod to swing; when the frame swings, the second support rod drives the hollow cylinder to rotate around the axis of the second support rod. The transition design of the U-shaped supporting plate is that when the frame is inclined towards the first belt direction, the U-shaped supporting plate is inclined towards the first belt direction, and the U-shaped supporting plate cannot interfere with the transmission of the first belt.

The headstock rod is fixed by the headstock sleeve and can rotate around the axis of the headstock rod; the headstock rod can swing along with the frame; the first pole of car can drive the arc rotatory around the axis of first pole of car, and the arc drives the swing of first ring cover, and then first ring cover can drive the front wheel through first bracing piece, first axle sleeve and first fixed axle and turn to. The first support rod is fixed by the first ring, and relatively the first support rod can rotate around the axis of the first ring.

The radian of the arc-shaped groove in the first ring sleeve is 40 degrees; when the first ring sleeve does not rotate, the swinging block is positioned in the middle of the arc-shaped groove; the design is that when the frame is in a vertical state and the frame drives the arc plate to swing forwards and backwards through the headstock rod, the maximum angle of forward and reverse rotation of the first ring sleeve around the axis of the first ring sleeve is 20 degrees by the arc plate, so that the swing of the frame and the front wheel is controlled within 20 degrees, and the common turning of the bicycle can still be met.

The second fixed shaft is fixed by the second shaft sleeve and can rotate around the axis of the second fixed shaft; the first pedal can drive the second fixed shaft to rotate through the first crank plate, and the second pedal can drive the second fixed shaft to rotate through the second crank plate; the second fixed shaft can drive the front belt pulley to rotate; the third fixed shaft is fixed by the third shaft sleeve and can rotate around the axis of the third fixed shaft; the front belt pulley can drive the first belt pulley to rotate through the first belt pulley; the first belt pulley can drive the second belt pulley to rotate through the third fixed shaft; the second belt pulley can drive the rear belt pulley to rotate through the second belt; the fourth fixed shaft is fixed by a fourth shaft sleeve and can rotate around the axis of the fourth fixed shaft; the rear belt pulley can drive the rear wheel to rotate through the fourth fixed shaft.

The groove depth of the belt grooves on the front belt pulley, the first belt pulley, the second belt pulley and the rear belt pulley is deeper, so that the first belt and the second belt can not be separated from the belt grooves in the transmission process, and the twisted transmission of the first belt can not be separated from the belt grooves.

The width of the front wheel and the width of the rear wheel are larger than that of the common bicycle wheel, so that the design of the wide wheel is beneficial to increasing the friction braking effect of the wheel and the ground, and the braking distance is shortened. The design of two other front wheels and two rear wheels makes the bicycle more balanced, is difficult to empty. However, designs in which the width of the front and rear wheels is greater than the width of a conventional bicycle wheel have two disadvantages when steering: firstly, when the bicycle is steered, the wheels are very wide, and the wheels need a large force arm when toppled, so that the whole bicycle is difficult to topple, the centrifugal force during steering is difficult to overcome, and certain danger exists; secondly, even if the whole bicycle can be turned and inclined, the contact surface of the wide wheel and the ground is only the edge of the tire, the contact area of the wide wheel and the ground is much smaller when the bicycle runs normally, the difference between the friction force provided by the wide wheel during turning and the friction force provided by the wide wheel during straight running is larger, and the use effect of the wide wheel during turning is poor. The present invention solves this problem with a frame tilt and wide wheel no tilt design.

The first belt pulley and the second belt pulley are the same in size, the diameter of the front belt pulley is larger than that of the first belt pulley, and the diameter of the second belt pulley is larger than that of the rear belt pulley; the design is just like the diameter of the front chain wheel of the common bicycle is larger than that of the rear chain wheel, so that the bicycle can be ridden for a long distance with less labor.

For the actuator: the hollow cylinder is fixed by the second support rod; the first disc is positioned in the hollow cylinder, one end of the fourth supporting rod passes through the rod hole on the hollow cylinder and is arranged on the first disc, and then the hollow cylinder relatively fixes the first disc and the fourth supporting rod. Two spiral chutes are symmetrically arranged on the inner circular surface of the sliding cavity along the axis direction, the sliding column slides in the spiral chutes, when the frame obliquely swings, the second supporting rod drives the hollow cylinder to rotate, the sliding column relatively moves towards the direction of the second disc under the guidance of the spiral chutes, the sliding column drives the first disc to move towards the direction of the second disc, the first disc drives the third fixed shaft to move towards the direction of the second disc through the fourth supporting rod and the third shaft sleeve, and then the distance between the first belt pulley and the front belt pulley is shortened. When the frame inclined swing, the second shaft sleeve drives the front belt pulley inclined swing through the second fixed shaft, and at the moment, the first belt pulley is still in a vertical state, so that the first belt can generate certain distortion. The actuator can shorten the distance between the first belt pulley and the front belt pulley to compensate for the shortened transmission distance of the first belt caused by the twisting, so that the twisted first belt can still transmit. The projection radian of the spiral chute is 20 degrees, the forward and reverse rotation of the hollow cylinder is within 20 degrees, and the inclined swinging angle of the frame is further limited within 20 degrees; the bicycle frame can still meet the requirement of common turning of the bicycle within 20 degrees of inclined swing. In addition, under the balanced support of the two wide front wheels and the two wide rear wheels, even if the bicycle is not driven, the bicycle cannot fall down when a rider enables the frame to tilt forwards and backwards within 20 degrees; even if the bicycle runs on a wet road surface, when the wheels slide on the wet road surface, the bicycle can be stopped under the condition that the bicycle does not fall down, thereby protecting the safety of a rider.

The design that the first spring is always in a compressed state is characterized in that the first disc and the second disc are always propped open when the hollow cylinder does not rotate, and the sliding cylinder is always positioned at the communicated connecting point of the two spiral chutes. The first spring also assists in the return of the second disk. The design that one end of the sliding column is provided with a round angle is convenient for the sliding column to spirally slide in the spiral sliding chute.

When a rider rides the bicycle normally, the bicycle frame is in a vertical state; at the moment, the first ring sleeve does not rotate, and the swinging block is positioned in the middle of the arc-shaped groove; the hollow cylinder is not rotated at this time, and the spool is located at point a.

In the process of turning the bicycle, the handlebar swings through the handlebar head rod, the arc-shaped plate, the first ring sleeve, the first supporting rod and the first shaft sleeve to drive the first fixed shaft to swing, and then the front wheel turns. Meanwhile, in the turning process, due to the action of the centrifugal force of the bicycle, a rider can naturally tilt and swing for a certain angle to overcome the influence of the centrifugal force; the rider drives the frame to obliquely swing, and a second support rod in the frame drives the hollow cylinder to rotate; when the frame obliquely swings, the second shaft sleeve drives the front belt pulley to obliquely swing through the second fixed shaft, and at the moment, the first belt pulley is still in a vertical state, so that the first belt can generate certain distortion; when the hollow cylinder rotates, the sliding column moves towards the second disc relatively under the guidance of the spiral sliding chute, the sliding column drives the first disc to move towards the second disc, and the first spring is further compressed; the first disc drives the third fixed shaft to move towards the second disc through the fourth supporting rod and the third shaft sleeve, and further the distance between the first belt pulley and the front belt pulley is shortened; the distance between the first belt pulley and the front belt pulley is shortened to compensate the shortened transmission distance of the first belt caused by the distortion, and the distorted first belt can still transmit.

When the bicycle is braked rapidly due to sudden accidents in the process of high-speed running, the two wide front wheels and the two wide rear wheels can better rub and brake with the ground, so that the bicycle stops in a short distance; in addition, the two wide front wheels and the two wide rear wheels can also prevent the wheels of the bicycle from generating large horizontal swing when the bicycle is braked rapidly, so that the bicycle is prevented from falling down, and a rider is protected.

After the bicycle turns, the rider drives the frame to return to the vertical state, and the sliding columns relatively return to the connecting point where the two spiral sliding chutes are communicated under the reverse rotation of the hollow cylinder and the restoring force of the first spring; the first belt is no longer twisted.

Compared with the traditional bicycle technology, the invention can better perform friction braking with the ground by utilizing the two wide front wheels and the two wide rear wheels, thereby shortening the braking distance; the two wide front wheels and the two wide rear wheels can also prevent the wheels of the bicycle from generating large horizontal swing when the bicycle is braked rapidly, prevent the bicycle from falling down and protect riders. In addition, the design that the frame swings and the wide wheel does not swing can solve the defects when the wide wheel is used. The invention has simple structure and better practical effect.

Drawings

FIG. 1 is a general schematic view of a bicycle.

Fig. 2 is an elevational (first) view of the bicycle in overall section.

Fig. 3 is a front view (two) of the whole section of the bicycle.

Fig. 4 is an overall schematic view of the vehicle frame.

Fig. 5 is a top view of the first footrest and the second footrest installed.

FIG. 6 is a schematic view of the front pulley installation.

FIG. 7 is a schematic view of the first and rear pulley installation.

FIG. 8 is a schematic view of the first and second belt installations.

Fig. 9 is a rear wheel mounting schematic.

Fig. 10 is a schematic sectional elevation view of an actuator.

Fig. 11 is a schematic cross-sectional view of a hollow cylinder.

Fig. 12 is a schematic sectional front view of a hollow cylinder.

Fig. 13 is a schematic cross-sectional view of the hollow cylinder of fig. 12.

Fig. 14 is a first spring installation schematic.

Fig. 15 is a schematic view of an arcuate plate installation.

Figure 16 is a cross-sectional view of a first loop.

Fig. 17 is a schematic view of the front wheels.

Fig. 18 is a sectional front view schematically showing the mounting of the pendulum mass.

Number designation in the figures: 1. a handlebar; 2. covering the handlebar; 3. an arc-shaped plate; 4. a first loop; 5. a first support bar; 6. a first bushing; 7. a front wheel; 8. a beam rod; 9. a front support bar; 10. a second shaft sleeve; 12. a second support bar; 13. a third support bar; 14. a U-shaped support plate; 15. a rear support bar; 16. a seat post; 17. a vehicle seat; 18. a front pulley; 19. a first pedal; 20. an actuator; 21. a rear wheel; 22. a headstock bar; 23. a headstock pipe sleeve; 24. a fourth support bar; 25. a third shaft sleeve; 26. a second pulley; 27. a second belt; 28. a fifth support bar; 29. a fourth shaft sleeve; 30. a first pulley; 31. a first belt; 33. a second pedal; 34. a first crank plate; 35. a second crank plate; 36. a second fixed shaft; 37. a third fixed shaft; 38. a rear belt pulley; 39. a fourth fixed shaft; 40. a belt groove; 41. a first disc; 42. a traveler; 43. a first spring; 44. a second disc; 45. a hollow cylinder; 46. a spiral chute; 48. round corners; 49. a rod hole; 50. a sliding cavity; 51. an arc-shaped slot; 52. swinging a block; 53. a first stationary shaft.

Detailed Description

As shown in fig. 1, 6, 9 and 17, it comprises a handlebar 1, an arc plate 3, a first ring sleeve 4, a first support rod 5, a first shaft sleeve 6, a front wheel 7, a beam rod 8, a front support rod 9, a second shaft sleeve 10, a second support rod 12, a third support rod 13, a U-shaped support plate 14, a rear support rod 15, a seat rod 16, a saddle 17, a front belt pulley 18, a first pedal 19, an actuating mechanism 20 and a rear wheel 21, a headstock rod 22, a headstock sleeve 23, a third shaft sleeve 25, a second belt pulley 26, a second belt 27, a fifth support rod 28, a fourth shaft sleeve 29, a first belt pulley 30, a first belt 31, a second pedal 33, a first crank plate 34, a second crank plate 35, a first fixed shaft 53, a second fixed shaft 36, a rear belt pulley 38, a third fixed shaft 37, a belt groove 40, an arc-shaped groove 51, a swing block 52 and a fourth fixed shaft 39, wherein the headstock sleeve 23 is mounted at one end of the beam rod 8 as shown in fig. 2 and 4; the saddle 17 is arranged on the outer circular surface of one end of the beam rod 8 far away from the headstock sleeve 23 through a seat rod, and the saddle 17 is positioned on the upper side of the beam rod 8; one end of the front support rod 9 is arranged on the outer circular surface of one end of the beam rod 8, which is provided with the headstock sleeve 23, and the other end is provided with the second shaft sleeve 10; the front support rod 9 is positioned at the lower side of the beam rod 8; one end of the second support rod 12 is installed on the outer circular surface of the second shaft sleeve 10, and the other end is installed with an actuating mechanism 20; one end of the rear support rod 15 is arranged on the outer circular surface of one end of the beam rod 8 far away from the headstock sleeve 23, and the other end is provided with a U-shaped support plate 14; the rear support rod 15 is positioned at the lower side of the beam rod 8; one end of the third support rod 13 is arranged on the outer circular surface of the second support rod 12, and the other end is arranged on one side of the U-shaped support plate 14 far away from the rear support rod 15; the third support bar 13 is adjacent to the actuator 20.

As shown in fig. 1 and 15, one end of the head rod 22 is provided with the arc-shaped plate 3, and the other end passes through the head pipe sleeve 23 and is provided with the handlebar 1; the lower end of the arc plate 3 is provided with a first ring sleeve 4; as shown in fig. 16, the inner circumferential surface of the first ring 4 is provided with an arc-shaped groove 51; as shown in fig. 17 and 18, two front wheels 7 are symmetrically mounted on both ends of the first fixed shaft 53; the first hub 6 is mounted on the outer circumferential surface of the first fixed shaft 53, and the first hub 6 is located between the two front wheels 7; one end of the first supporting rod 5 is arranged on the outer circular surface of the first shaft sleeve 6, and the other end of the first supporting rod is arranged in the first ring sleeve 4; a swinging block 52 is arranged on the outer circular surface of one end of the first supporting rod 5 far away from the first shaft sleeve 6; the pendulum mass 52 is located in the arcuate slot 51.

As shown in fig. 5 and 6, one end of the second fixed shaft 36 is mounted with the first crank plate 34, and the other end passes through the second bushing 10 and is mounted with the second crank plate 35; the front belt pulley 18 is mounted on the outer circumferential surface of the second fixed shaft 36, and the front belt pulley 18 is located between the second bushing 10 and the second crank plate 35; the first pedal 19 is mounted by a shaft on the end of the first crank plate 34 remote from the second fixed shaft 36; the second foothold 33 is mounted by a shaft on an end of the second crank plate 35 remote from the second fixed shaft 36.

As shown in fig. 3 and 9, one end of the fifth support rod 28 is provided with a third shaft sleeve 25, and the other end is provided with a fourth shaft sleeve 29; the actuator 20 is connected with the third shaft sleeve 25; as shown in fig. 5 and 7, one end of the third fixed shaft 37 is mounted with the first belt pulley 30, and the other end passes through the third shaft sleeve 25 and is mounted with the second belt pulley 26; as shown in fig. 7 and 9, the fourth fixed shaft 39 is mounted in the fourth shaft sleeve 29, and the fourth fixed shaft 39 passes through the fourth shaft sleeve 29; as shown in fig. 5 and 7, two rear wheels 21 are symmetrically mounted on both ends of the fourth fixed shaft 39; the rear belt pulley 38 is mounted on the outer circumferential surface of the fourth fixed shaft 39; the rear belt pulley 38 is located between the fourth shaft sleeve 29 and the rear wheel 21, and the rear belt pulley 38 and the second belt pulley 26 are located on the same side of the fifth support bar 28; the rear pulley 38 and the second pulley 26 are in the same plane; the front belt pulley 18 and the first belt pulley 30 are located on the same side of the second support rod 12, and the front belt pulley 18 and the first belt pulley 30 are located on the same plane.

As shown in fig. 6, a belt groove 40 is formed on the outer circumferential surface of the front pulley 18; as shown in fig. 7, a belt groove 40 is formed on the outer circumferential surface of the rear pulley 38; a belt groove 40 is formed on the outer circular surface of the first belt pulley 30; a belt groove 40 is formed on the outer circular surface of the second belt pulley 26; as shown in fig. 8, the first belt 31 is installed in the belt groove 40 of the front pulley 18 and the belt groove 40 of the first pulley 30; the second belt 27 is installed in the belt groove 40 of the rear pulley 38 and the belt groove 40 of the second pulley 26.

As shown in fig. 10 and 11, the actuator 20 includes a fourth support rod 24, a first disc 41, a sliding column 42, a first spring 43, a second disc 44, a hollow cylinder 45, a spiral sliding groove 46, a rod hole 49, and a sliding cavity 50, as shown in fig. 4, wherein the hollow cylinder 45 is mounted on the second support rod 12; as shown in fig. 11, the hollow cylinder 45 has a sliding chamber 50 therein; the side surface of the hollow cylinder 45 far away from the second supporting rod 12 is provided with a rod hole 49; the rod hole 49 is communicated with the sliding cavity 50; FIG. 13 is a cross-sectional view of the hollow cylinder 45 taken along the bold and solid circle line in FIG. 12, with the hollow cylinder 45 outside the bold and solid circle line cut away; as shown in fig. 11, 12 and 13, two spiral sliding grooves 46 are symmetrically formed on the inner circumferential surface of the sliding cavity 50 along the axial direction, and the projection radian of each spiral sliding groove 46 is 20 degrees; the two spiral chutes 46 are communicated; as shown in fig. 10 and 14, the second disk 44 is mounted in the slide chamber 50; one end of the fourth support rod 24 is mounted on the outer circular surface of the third shaft sleeve 25, and the other end passes through the rod hole 49 and is mounted with the first disc 41; the first disc 41 is located in the sliding chamber 50; a sliding column 42 is arranged on the outer circular surface of the first disc 41; the sliding column 42 is positioned in the spiral sliding groove 46, and the sliding column 42 slides in the spiral sliding groove 46; one end of the first spring 43 is mounted on the first disc 41 and the other end is mounted on the second disc 44.

As shown in figure 1, the bicycle handlebar with the handle sleeves also comprises handle sleeves 2, wherein two handle sleeves 2 are respectively arranged at two ends of the handlebar 1.

As shown in fig. 14, the end of the spool 42 remote from the first disk 41 has a rounded corner 48.

The arc of the arc-shaped groove 51 is 40 degrees.

When the first ring sleeve 4 is not rotated, the swing block 52 is located at the middle position of the arc-shaped slot 51.

The first pulley 30 and the second pulley 26 are the same size; the diameter of the front pulley 18 is greater than the diameter of the first pulley 30; the diameter of the second pulley 26 is greater than the diameter of the rear pulley 38.

The first spring 43 is a compression spring, and the first spring 43 is always in a compressed state.

The connecting point where the two spiral chutes 46 are communicated is named as point A; when the hollow cylinder 45 is not rotated, the spool 42 is located at point a.

The frame is composed of a headstock sleeve 23, a beam rod 8, a rear support rod 15, a front support rod 9, a second shaft sleeve 10, a second support rod 12, a third support rod 13 and a U-shaped support plate 14; when the frame swings, the frame can drive the head rod 22 to swing; when the frame swings, the second support rod 12 drives the hollow cylinder 45 to rotate around the axis of the second support rod 12. The U-shaped support plate 14 is designed to be transitional such that when the frame is tilted toward the first belt 31, the U-shaped support plate 14 is tilted toward the first belt 31, and the U-shaped support plate 14 does not interfere with the transmission of the first belt 31.

The headstock rod 22 is fixed by the headstock sleeve 23, and the headstock rod 22 can rotate around its own axis; the headstock rod 22 can swing along with the frame; the headstock rod 22 can drive the arc plate 3 to rotate around the axis of the headstock rod 22, the arc plate 3 drives the first ring sleeve 4 to swing, and then the first ring sleeve 4 can drive the front wheel 7 to turn through the first supporting rod 5, the first shaft sleeve 6 and the first fixing shaft 53. The first support rod 5 is fixed by the first collar 4 and relatively the first support rod 5 is rotatable around the axis of the first collar 4.

The radian of the arc-shaped groove 51 in the first ring sleeve 4 is 40 degrees; when the first ring sleeve 4 is not rotated, the swinging block 52 is positioned in the middle of the arc-shaped groove 51; the design is that when the bicycle frame is in a vertical state and the bicycle frame drives the arc-shaped plate 3 to swing forwards and backwards through the headstock rod 22, the maximum angle of forward and reverse rotation of the first ring sleeve 4 around the axis of the first ring sleeve 4 driven by the arc-shaped plate 3 is 20 degrees, so that the swinging of the bicycle frame and the front wheel 7 is controlled within 20 degrees, and the common turning of the bicycle can still be met.

The second fixed shaft 36 is fixed by the second bushing 10, and the second fixed shaft 36 can rotate around its own axis; the first pedal can drive the second fixed shaft 36 to rotate through the first crank plate 34, and the second pedal can drive the second fixed shaft 36 to rotate through the second crank plate 35; the second fixed shaft 36 can drive the front belt pulley 18 to rotate; the third fixed shaft 37 is fixed by the third sleeve 25, and the third fixed shaft 37 can rotate around its own axis; the front belt pulley 18 can drive the first belt pulley 30 to rotate through the first belt pulley 30; the first belt pulley 30 can drive the second belt pulley 26 to rotate through the third fixed shaft 37; the second belt pulley 26 can rotate the rear belt pulley 38 via the second belt 27; the fourth fixed shaft 39 is fixed by the fourth shaft sleeve 29, the fourth fixed shaft 39 being rotatable about its own axis; the rear pulley 38 can rotate the rear wheel 21 via the fourth stationary axle 39.

The groove depth of the belt groove 40 of the front pulley 18, the first pulley 30, the second pulley 26 and the rear pulley 38 is relatively deep, so that the first belt 31 and the second belt 27 are prevented from being disengaged from the belt groove 40 during the transmission, and the twisted transmission of the first belt 31 is prevented from being disengaged from the belt groove 40.

The width of the front wheel 7 and the rear wheel 21 in the invention is larger than that of the common bicycle wheel, so the design of the wide wheel is beneficial to increasing the friction braking effect of the wheel and the ground and shortening the braking distance. The design of the other two front wheels 7 and the two rear wheels 21 makes the bicycle more balanced and less prone to toppling. However, designs in which the width of the front and

rear wheels

7, 21 is greater than the width of a conventional bicycle wheel have two disadvantages when steering: firstly, when the bicycle is steered, the wheels are very wide, and the wheels need a large force arm when toppled, so that the whole bicycle is difficult to topple, the centrifugal force during steering is difficult to overcome, and certain danger exists; secondly, even if the whole bicycle can be turned and inclined, the contact surface of the wide wheel and the ground is only the edge of the tire, the contact area of the wide wheel and the ground is much smaller when the bicycle runs normally, the difference between the friction force provided by the wide wheel during turning and the friction force provided by the wide wheel during straight running is larger, and the use effect of the wide wheel during turning is poor. The present invention solves this problem with a frame tilt and wide wheel no tilt design.

The first pulley 30 and the second pulley 26 are the same size, the diameter of the front pulley 18 is greater than the diameter of the first pulley 30, and the diameter of the second pulley 26 is greater than the diameter of the rear pulley 38; the design is just like the diameter of the front chain wheel of the common bicycle is larger than that of the rear chain wheel, so that the bicycle can be ridden for a long distance with less labor.

For the actuator 20: the hollow cylinder 45 is fixed by the second support rod 12; the first disc 41 is positioned in the hollow cylinder 45, and one end of the fourth support rod 24 passes through the rod hole 49 of the hollow cylinder 45 and is mounted on the first disc 41, so that the hollow cylinder 45 fixes the first disc 41 and the fourth support rod 24 with respect to each other. The inner circular surface of the sliding cavity 50 is symmetrically provided with two spiral sliding grooves 46 along the axial direction, and the sliding column 42 slides in the spiral sliding grooves 46, so that when the frame is tilted and swung, the second support rod 12 drives the hollow cylinder 45 to rotate, the sliding column 42 relatively moves towards the second disc 44 under the guidance of the spiral sliding grooves 46, the sliding column 42 drives the first disc 41 to move towards the second disc 44, the first disc 41 drives the third fixed shaft 37 to move towards the second disc 44 through the fourth support rod 24 and the third shaft sleeve 25, and further, the distance between the first belt pulley 30 and the front belt pulley 18 is shortened. When the frame is tilted and swung, the second shaft sleeve 10 drives the front belt pulley 18 to tilt and swing through the second fixed shaft 36, and at this time, the first belt pulley 30 is still in a vertical state, so that the first belt 31 can be twisted to a certain extent. The actuator 20 may cause the distance between the first pulley 30 and the front pulley 18 to be shortened to compensate for the shortened drive distance of the first belt 31 due to twisting, such that the twisted first belt 31 is still driven. The projection radian of the spiral chute 46 is 20 degrees, so that the forward and reverse rotation of the hollow cylinder 45 is within 20 degrees, and the inclined swinging angle of the frame is limited within 20 degrees; the bicycle frame can still meet the requirement of common turning of the bicycle within 20 degrees of inclined swing. In addition, under the balanced support of the two wide front wheels 7 and the two wide rear wheels 21, even if the bicycle is not driven, the bicycle cannot fall down when a rider enables the frame to tilt and swing within 20 degrees; even if the bicycle runs on a wet road surface, when the wheels slide on the wet road surface, the bicycle can be stopped under the condition that the bicycle does not fall down, thereby protecting the safety of a rider.

The design of the first spring 43 in its compressed state at all times ensures that the first disc 41 and the second disc 44 are always stretched when the hollow cylinder 45 is not rotating, and also ensures that the sliding cylinder is always at the point where the two helical chutes 46 communicate. The first spring 43 also assists in the return of the second disc 44. The rounded corner 48 at one end of the spool 42 is designed to facilitate the helical sliding movement of the spool 42 in the helical groove 46.

The specific implementation mode is as follows: when a rider rides the bicycle normally, the bicycle frame is in a vertical state; at this time, the first ring sleeve 4 does not rotate, and the swinging block 52 is positioned in the middle of the arc-shaped groove 51; the hollow cylinder 45 is now not rotated and the spool 42 is at point a.

In the process of turning the bicycle, by swinging the handlebar 1, the handlebar 1 drives the first fixed shaft 53 to swing through the head rod 22, the arc-shaped plate 3, the first ring sleeve 4, the first supporting rod 5 and the first shaft sleeve 6, and then the front wheel 7 turns. Meanwhile, in the turning process, due to the action of the centrifugal force of the bicycle, a rider can naturally tilt and swing for a certain angle to overcome the influence of the centrifugal force; the rider drives the frame to obliquely swing, and the second support rod 12 in the frame drives the hollow cylinder 45 to rotate; when the frame obliquely swings, the second shaft sleeve 10 drives the front belt pulley 18 to obliquely swing through the second fixed shaft 36, and at the moment, the first belt pulley 30 is still in a vertical state, so that the first belt 31 can generate certain distortion; when the hollow cylinder 45 rotates, under the guidance of the spiral chute 46, the sliding column 42 relatively moves towards the second disk 44, the sliding column 42 drives the first disk 41 to move towards the second disk 44, and the first spring 43 is further compressed; the first disk 41 drives the third fixed shaft 37 to move towards the second disk 44 through the fourth support bar 24 and the third shaft sleeve 25, and further the distance between the first belt pulley 30 and the front belt pulley 18 is shortened; thus, the distance between the first pulley 30 and the front pulley 18 is shortened to compensate for the shortened transmission distance of the first belt 31 due to the twist, so that the twisted first belt 31 can still transmit power.

When the bicycle is braked rapidly due to sudden accidents in the process of high-speed running, the two wide front wheels 7 and the two wide rear wheels 21 can be better braked by friction with the ground, so that the bicycle stops in a short distance; in addition, the two wide front wheels 7 and the two wide rear wheels 21 can also prevent the wheels of the bicycle from generating large horizontal swing when the bicycle is braked rapidly, so that the bicycle is prevented from falling down, and a rider is protected.

After the bicycle turns, the rider drives the frame to return to the vertical state, and the sliding column 42 relatively returns to the connection point of the two spiral sliding grooves 46 under the reverse rotation of the hollow cylinder 45 and the return force of the first spring 43; the first belt 31 is no longer twisted.

In conclusion, the invention has the main beneficial effects that: the two wide front wheels 7 and the two wide rear wheels 21 can better rub and brake with the ground, and the braking distance is shortened; the two wide front wheels 7 and the two wide rear wheels 21 can also prevent the wheels of the bicycle from generating large horizontal swing when the bicycle is braked rapidly, prevent the bicycle from falling down and protect riders. In addition, the design that the frame swings and the wide wheel does not swing can solve the defects when the wide wheel is used. The invention has simple structure and better practical effect.

Claims

1. A bicycle, characterized in that: the bicycle comprises a handlebar, an arc-shaped plate, a first ring sleeve, a first supporting rod, a first shaft sleeve, a front wheel, a bicycle beam rod, a front supporting rod, a second shaft sleeve, a second supporting rod, a third supporting rod, a U-shaped supporting plate, a rear supporting rod, a seat rod, a bicycle seat, a front belt pulley, a first pedal, an executing mechanism, a rear wheel, a bicycle head rod, a bicycle head pipe sleeve, a third shaft sleeve, a second belt pulley, a second belt, a fifth supporting rod, a fourth shaft sleeve, a first belt pulley, a first belt, a second pedal, a first crank plate, a second crank plate, a first fixed shaft, a second fixed shaft, a rear belt pulley, a third fixed shaft, a belt groove, an arc-shaped groove, a swinging block and a fourth fixed shaft, wherein the bicycle head pipe sleeve is installed at one end of the bicycle beam rod; the saddle is arranged on the outer circular surface of one end of the beam rod, which is far away from the headstock sleeve, through the seat rod, and the saddle is positioned on the upper side of the beam rod; one end of the front support rod is arranged on the outer circular surface of one end of the beam rod, which is provided with the headstock sleeve, and the other end of the front support rod is provided with the second shaft sleeve; the front support rod is positioned at the lower side of the beam rod; one end of the second supporting rod is arranged on the outer circular surface of the second shaft sleeve, and the other end of the second supporting rod is provided with an actuating mechanism; one end of the rear support rod is arranged on the outer circular surface of one end of the beam rod, which is far away from the head pipe sleeve, and the other end of the rear support rod is provided with a U-shaped support plate; the rear support rod is positioned at the lower side of the beam rod; one end of the third supporting rod is arranged on the outer circular surface of the second supporting rod, and the other end of the third supporting rod is arranged on one side, far away from the rear supporting rod, of the U-shaped supporting plate; the third supporting rod is close to the actuating mechanism;

one end of the headstock rod is provided with an arc-shaped plate, and the other end of the headstock rod penetrates through the headstock pipe sleeve and is provided with a handlebar; the lower end of the arc-shaped plate is provided with a first ring sleeve; an arc-shaped groove is formed in the inner circular surface of the first ring sleeve; two front wheels are symmetrically arranged at two ends of the first fixed shaft; the first shaft sleeve is arranged on the outer circular surface of the first fixed shaft and is positioned between the two front wheels; one end of the first supporting rod is arranged on the outer circular surface of the first shaft sleeve, and the other end of the first supporting rod is arranged in the first ring sleeve; a swinging block is arranged on the outer circular surface of one end of the first supporting rod, which is far away from the first shaft sleeve; the swinging block is positioned in the arc-shaped groove;

one end of the second fixed shaft is provided with a first crank plate, and the other end of the second fixed shaft penetrates through the second shaft sleeve and is provided with a second crank plate; the front belt pulley is arranged on the outer circular surface of the second fixed shaft and is positioned between the second shaft sleeve and the second crank plate; the first pedal is arranged on one end of the first crank plate far away from the second fixed shaft through a shaft; the second pedal is arranged on one end of the second crank plate far away from the second fixed shaft through a shaft;

one end of the fifth supporting rod is provided with a third shaft sleeve, and the other end of the fifth supporting rod is provided with a fourth shaft sleeve; the actuating mechanism is connected with the third shaft sleeve; one end of the third fixed shaft is provided with a first belt pulley, and the other end of the third fixed shaft penetrates through the third shaft sleeve and is provided with a second belt pulley; the fourth fixed shaft is arranged in the fourth shaft sleeve, and the fourth fixed shaft penetrates through the fourth shaft sleeve; two rear wheels are symmetrically arranged at two ends of the fourth fixed shaft; the rear belt pulley is arranged on the outer circular surface of the fourth fixed shaft; the rear belt pulley is positioned between the fourth shaft sleeve and the rear wheel, and the rear belt pulley and the second belt pulley are positioned on the same side of the fifth supporting rod; the rear belt pulley and the second belt pulley are positioned on the same plane; the front belt pulley and the first belt pulley are positioned on the same side of the second support rod, and the front belt pulley and the first belt pulley are positioned on the same plane;

a belt groove is formed on the outer circular surface of the front belt pulley; a belt groove is formed on the outer circular surface of the rear belt pulley; a belt groove is formed in the outer circular surface of the first belt pulley; a belt groove is formed in the outer circular surface of the second belt pulley; the first belt is arranged in a belt groove of the front belt pulley and a belt groove of the first belt pulley; the second belt is arranged in a belt groove of the rear belt pulley and a belt groove of the second belt pulley;

2. A cycle as claimed in claim 1, wherein: it also comprises handle sleeves, wherein two handle sleeves are respectively arranged at two ends of the handle bar.

3. A cycle as claimed in claim 1, wherein: the end of the sliding column far away from the first disc is provided with a round angle.

4. A cycle as claimed in claim 1, wherein: the radian of the arc-shaped groove is 40 degrees.

5. A cycle as claimed in claim 1, wherein: when the first ring sleeve does not rotate, the swinging block is positioned in the middle of the arc-shaped groove.

6. A cycle as claimed in claim 1, wherein: the first belt pulley and the second belt pulley are the same in size; the diameter of the front belt pulley is larger than that of the first belt pulley; the diameter of the second belt pulley is larger than that of the rear belt pulley.

7. A cycle as claimed in claim 1, wherein: the first spring is a compression spring and is always in a compression state.

8. A cycle as claimed in claim 1, wherein: the connecting point of the two spiral chutes is named as point A; when the hollow cylinder is not rotating, the spool is located at point a.